Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfsclient/nfs_clrpcops.c
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1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 /* 40 * Rpc op calls, generally called from the vnode op calls or through the 41 * buffer cache, for NFS v2, 3 and 4. 42 * These do not normally make any changes to vnode arguments or use 43 * structures that might change between the VFS variants. The returned 44 * arguments are all at the end, after the NFSPROC_T *p one. 45 */ 46 47 #include "opt_inet6.h" 48 49 #include <fs/nfs/nfsport.h> 50 #include <fs/nfsclient/nfs.h> 51 #include <sys/extattr.h> 52 #include <sys/sysctl.h> 53 #include <sys/taskqueue.h> 54 55 SYSCTL_DECL(_vfs_nfs); 56 57 static int nfsignore_eexist = 0; 58 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 59 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 60 61 static int nfscl_dssameconn = 0; 62 SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW, 63 &nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs"); 64 65 static uint64_t nfs_maxcopyrange = SSIZE_MAX; 66 SYSCTL_U64(_vfs_nfs, OID_AUTO, maxcopyrange, CTLFLAG_RW, 67 &nfs_maxcopyrange, 0, "Max size of a Copy so RPC times reasonable"); 68 69 /* 70 * Global variables 71 */ 72 extern struct nfsstatsv1 nfsstatsv1; 73 extern int nfs_numnfscbd; 74 extern struct timeval nfsboottime; 75 extern u_int32_t newnfs_false, newnfs_true; 76 extern nfstype nfsv34_type[9]; 77 extern int nfsrv_useacl; 78 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 79 extern int nfscl_debuglevel; 80 extern int nfs_pnfsiothreads; 81 extern u_long sb_max_adj; 82 NFSCLSTATEMUTEX; 83 int nfstest_outofseq = 0; 84 int nfscl_assumeposixlocks = 1; 85 int nfscl_enablecallb = 0; 86 short nfsv4_cbport = NFSV4_CBPORT; 87 int nfstest_openallsetattr = 0; 88 89 #define DIRHDSIZ offsetof(struct dirent, d_name) 90 91 /* 92 * nfscl_getsameserver() can return one of three values: 93 * NFSDSP_USETHISSESSION - Use this session for the DS. 94 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 95 * session. 96 * NFSDSP_NOTFOUND - No matching server was found. 97 */ 98 enum nfsclds_state { 99 NFSDSP_USETHISSESSION = 0, 100 NFSDSP_SEQTHISSESSION = 1, 101 NFSDSP_NOTFOUND = 2, 102 }; 103 104 /* 105 * Do a write RPC on a DS data file, using this structure for the arguments, 106 * so that this function can be executed by a separate kernel process. 107 */ 108 struct nfsclwritedsdorpc { 109 int done; 110 int inprog; 111 struct task tsk; 112 struct vnode *vp; 113 int iomode; 114 int must_commit; 115 nfsv4stateid_t *stateidp; 116 struct nfsclds *dsp; 117 uint64_t off; 118 int len; 119 #ifdef notyet 120 int advise; 121 #endif 122 struct nfsfh *fhp; 123 struct mbuf *m; 124 int vers; 125 int minorvers; 126 struct ucred *cred; 127 NFSPROC_T *p; 128 int err; 129 }; 130 131 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 132 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 133 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 134 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 135 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 136 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 137 int); 138 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 139 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 140 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 141 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 142 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 143 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 144 int *, void *, int *); 145 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 146 struct nfscllockowner *, u_int64_t, u_int64_t, 147 u_int32_t, struct ucred *, NFSPROC_T *, int); 148 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 149 struct acl *, nfsv4stateid_t *, void *); 150 static int nfsrpc_layouterror(struct nfsmount *, uint8_t *, int, uint64_t, 151 uint64_t, nfsv4stateid_t *, struct ucred *, NFSPROC_T *, uint32_t, 152 uint32_t, char *); 153 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 154 uint32_t, uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 155 struct ucred *, NFSPROC_T *); 156 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *, 157 struct sockaddr_in6 *, sa_family_t, int, int, struct nfsclds **, 158 NFSPROC_T *); 159 static void nfscl_initsessionslots(struct nfsclsession *); 160 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 161 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 162 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *, 163 NFSPROC_T *); 164 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *, 165 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 166 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *, 167 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 168 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 169 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 170 struct ucred *, NFSPROC_T *); 171 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 172 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 173 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 174 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 175 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 176 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 177 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 178 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 179 struct ucred *, NFSPROC_T *); 180 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 181 struct nfsclds *, struct nfsclds **, uint32_t *); 182 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 183 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 184 NFSPROC_T *); 185 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 186 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 187 #ifdef notyet 188 static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 189 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 190 NFSPROC_T *); 191 static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 192 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 193 #endif 194 static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *, 195 struct nfsvattr *, int *, struct ucred *, NFSPROC_T *, void *); 196 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 197 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 198 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 199 NFSPROC_T *); 200 static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *, 201 nfsv4stateid_t *, int *, struct nfsclflayouthead *); 202 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 203 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 204 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 205 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 206 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 207 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 208 struct nfsfh **, int *, int *, void *, int *); 209 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 210 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 211 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 212 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 213 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 214 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 215 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 216 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 217 int, int, int, int *, struct nfsclflayouthead *, int *); 218 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 219 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 220 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 221 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 222 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 223 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 224 static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *, 225 nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *, 226 struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *); 227 static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *, 228 int, struct nfsvattr *, int *, struct ucred *); 229 static struct mbuf *nfsm_split(struct mbuf *, uint64_t); 230 231 int nfs_pnfsio(task_fn_t *, void *); 232 233 /* 234 * nfs null call from vfs. 235 */ 236 int 237 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 238 { 239 int error; 240 struct nfsrv_descript nfsd, *nd = &nfsd; 241 242 NFSCL_REQSTART(nd, NFSPROC_NULL, vp, NULL); 243 error = nfscl_request(nd, vp, p, cred, NULL); 244 if (nd->nd_repstat && !error) 245 error = nd->nd_repstat; 246 m_freem(nd->nd_mrep); 247 return (error); 248 } 249 250 /* 251 * nfs access rpc op. 252 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 253 * modes are changed on the server, accesses might still fail later. 254 */ 255 int 256 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 257 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 258 { 259 int error; 260 u_int32_t mode, rmode; 261 262 if (acmode & VREAD) 263 mode = NFSACCESS_READ; 264 else 265 mode = 0; 266 if (vnode_vtype(vp) == VDIR) { 267 if (acmode & VWRITE) 268 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 269 NFSACCESS_DELETE); 270 if (acmode & VEXEC) 271 mode |= NFSACCESS_LOOKUP; 272 } else { 273 if (acmode & VWRITE) 274 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 275 if (acmode & VEXEC) 276 mode |= NFSACCESS_EXECUTE; 277 } 278 279 /* 280 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 281 */ 282 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 283 NULL); 284 285 /* 286 * The NFS V3 spec does not clarify whether or not 287 * the returned access bits can be a superset of 288 * the ones requested, so... 289 */ 290 if (!error && (rmode & mode) != mode) 291 error = EACCES; 292 return (error); 293 } 294 295 /* 296 * The actual rpc, separated out for Darwin. 297 */ 298 int 299 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 300 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 301 void *stuff) 302 { 303 u_int32_t *tl; 304 u_int32_t supported, rmode; 305 int error; 306 struct nfsrv_descript nfsd, *nd = &nfsd; 307 nfsattrbit_t attrbits; 308 309 *attrflagp = 0; 310 supported = mode; 311 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp, cred); 312 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 313 *tl = txdr_unsigned(mode); 314 if (nd->nd_flag & ND_NFSV4) { 315 /* 316 * And do a Getattr op. 317 */ 318 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 319 *tl = txdr_unsigned(NFSV4OP_GETATTR); 320 NFSGETATTR_ATTRBIT(&attrbits); 321 (void) nfsrv_putattrbit(nd, &attrbits); 322 } 323 error = nfscl_request(nd, vp, p, cred, stuff); 324 if (error) 325 return (error); 326 if (nd->nd_flag & ND_NFSV3) { 327 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 328 if (error) 329 goto nfsmout; 330 } 331 if (!nd->nd_repstat) { 332 if (nd->nd_flag & ND_NFSV4) { 333 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 334 supported = fxdr_unsigned(u_int32_t, *tl++); 335 } else { 336 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 337 } 338 rmode = fxdr_unsigned(u_int32_t, *tl); 339 if (nd->nd_flag & ND_NFSV4) 340 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 341 342 /* 343 * It's not obvious what should be done about 344 * unsupported access modes. For now, be paranoid 345 * and clear the unsupported ones. 346 */ 347 rmode &= supported; 348 *rmodep = rmode; 349 } else 350 error = nd->nd_repstat; 351 nfsmout: 352 m_freem(nd->nd_mrep); 353 return (error); 354 } 355 356 /* 357 * nfs open rpc 358 */ 359 int 360 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 361 { 362 struct nfsclopen *op; 363 struct nfscldeleg *dp; 364 struct nfsfh *nfhp; 365 struct nfsnode *np = VTONFS(vp); 366 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 367 u_int32_t mode, clidrev; 368 int ret, newone, error, expireret = 0, retrycnt; 369 370 /* 371 * For NFSv4, Open Ops are only done on Regular Files. 372 */ 373 if (vnode_vtype(vp) != VREG) 374 return (0); 375 mode = 0; 376 if (amode & FREAD) 377 mode |= NFSV4OPEN_ACCESSREAD; 378 if (amode & FWRITE) 379 mode |= NFSV4OPEN_ACCESSWRITE; 380 nfhp = np->n_fhp; 381 382 retrycnt = 0; 383 #ifdef notdef 384 { char name[100]; int namel; 385 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 386 bcopy(NFS4NODENAME(np->n_v4), name, namel); 387 name[namel] = '\0'; 388 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 389 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 390 else printf(" fhl=0\n"); 391 } 392 #endif 393 do { 394 dp = NULL; 395 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 396 cred, p, NULL, &op, &newone, &ret, 1, true); 397 if (error) { 398 return (error); 399 } 400 if (nmp->nm_clp != NULL) 401 clidrev = nmp->nm_clp->nfsc_clientidrev; 402 else 403 clidrev = 0; 404 if (ret == NFSCLOPEN_DOOPEN) { 405 if (np->n_v4 != NULL) { 406 /* 407 * For the first attempt, try and get a layout, if 408 * pNFS is enabled for the mount. 409 */ 410 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 411 nfs_numnfscbd == 0 || 412 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0) 413 error = nfsrpc_openrpc(nmp, vp, 414 np->n_v4->n4_data, 415 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 416 np->n_fhp->nfh_len, mode, op, 417 NFS4NODENAME(np->n_v4), 418 np->n_v4->n4_namelen, 419 &dp, 0, 0x0, cred, p, 0, 0); 420 else 421 error = nfsrpc_getopenlayout(nmp, vp, 422 np->n_v4->n4_data, 423 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 424 np->n_fhp->nfh_len, mode, op, 425 NFS4NODENAME(np->n_v4), 426 np->n_v4->n4_namelen, &dp, cred, p); 427 if (dp != NULL) { 428 #ifdef APPLE 429 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 430 #else 431 NFSLOCKNODE(np); 432 np->n_flag &= ~NDELEGMOD; 433 /* 434 * Invalidate the attribute cache, so that 435 * attributes that pre-date the issue of a 436 * delegation are not cached, since the 437 * cached attributes will remain valid while 438 * the delegation is held. 439 */ 440 NFSINVALATTRCACHE(np); 441 NFSUNLOCKNODE(np); 442 #endif 443 (void) nfscl_deleg(nmp->nm_mountp, 444 op->nfso_own->nfsow_clp, 445 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 446 } 447 } else { 448 error = EIO; 449 } 450 newnfs_copyincred(cred, &op->nfso_cred); 451 } else if (ret == NFSCLOPEN_SETCRED) 452 /* 453 * This is a new local open on a delegation. It needs 454 * to have credentials so that an open can be done 455 * against the server during recovery. 456 */ 457 newnfs_copyincred(cred, &op->nfso_cred); 458 459 /* 460 * nfso_opencnt is the count of how many VOP_OPEN()s have 461 * been done on this Open successfully and a VOP_CLOSE() 462 * is expected for each of these. 463 * If error is non-zero, don't increment it, since the Open 464 * hasn't succeeded yet. 465 */ 466 if (!error) { 467 op->nfso_opencnt++; 468 if (NFSHASNFSV4N(nmp) && NFSHASONEOPENOWN(nmp)) { 469 NFSLOCKNODE(np); 470 np->n_openstateid = op; 471 NFSUNLOCKNODE(np); 472 } 473 } 474 nfscl_openrelease(nmp, op, error, newone); 475 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 476 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 477 error == NFSERR_BADSESSION) { 478 (void) nfs_catnap(PZERO, error, "nfs_open"); 479 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 480 && clidrev != 0) { 481 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 482 retrycnt++; 483 } 484 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 485 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 486 error == NFSERR_BADSESSION || 487 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 488 expireret == 0 && clidrev != 0 && retrycnt < 4)); 489 if (error && retrycnt >= 4) 490 error = EIO; 491 return (error); 492 } 493 494 /* 495 * the actual open rpc 496 */ 497 int 498 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 499 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 500 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 501 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 502 int syscred, int recursed) 503 { 504 u_int32_t *tl; 505 struct nfsrv_descript nfsd, *nd = &nfsd; 506 struct nfscldeleg *dp, *ndp = NULL; 507 struct nfsvattr nfsva; 508 u_int32_t rflags, deleg; 509 nfsattrbit_t attrbits; 510 int error, ret, acesize, limitby; 511 struct nfsclsession *tsep; 512 513 dp = *dpp; 514 *dpp = NULL; 515 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0, 516 cred); 517 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 518 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 519 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 520 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 521 tsep = nfsmnt_mdssession(nmp); 522 *tl++ = tsep->nfsess_clientid.lval[0]; 523 *tl = tsep->nfsess_clientid.lval[1]; 524 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 525 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 526 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 527 if (reclaim) { 528 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 529 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 530 *tl = txdr_unsigned(delegtype); 531 } else { 532 if (dp != NULL) { 533 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 534 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 535 if (NFSHASNFSV4N(nmp)) 536 *tl++ = 0; 537 else 538 *tl++ = dp->nfsdl_stateid.seqid; 539 *tl++ = dp->nfsdl_stateid.other[0]; 540 *tl++ = dp->nfsdl_stateid.other[1]; 541 *tl = dp->nfsdl_stateid.other[2]; 542 } else { 543 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 544 } 545 (void) nfsm_strtom(nd, name, namelen); 546 } 547 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 548 *tl = txdr_unsigned(NFSV4OP_GETATTR); 549 NFSZERO_ATTRBIT(&attrbits); 550 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 551 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 552 (void) nfsrv_putattrbit(nd, &attrbits); 553 if (syscred) 554 nd->nd_flag |= ND_USEGSSNAME; 555 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 556 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 557 if (error) 558 return (error); 559 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 560 if (!nd->nd_repstat) { 561 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 562 6 * NFSX_UNSIGNED); 563 op->nfso_stateid.seqid = *tl++; 564 op->nfso_stateid.other[0] = *tl++; 565 op->nfso_stateid.other[1] = *tl++; 566 op->nfso_stateid.other[2] = *tl; 567 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 568 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 569 if (error) 570 goto nfsmout; 571 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 572 deleg = fxdr_unsigned(u_int32_t, *tl); 573 if (deleg == NFSV4OPEN_DELEGATEREAD || 574 deleg == NFSV4OPEN_DELEGATEWRITE) { 575 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 576 NFSCLFLAGS_FIRSTDELEG)) 577 op->nfso_own->nfsow_clp->nfsc_flags |= 578 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 579 ndp = malloc( 580 sizeof (struct nfscldeleg) + newfhlen, 581 M_NFSCLDELEG, M_WAITOK); 582 LIST_INIT(&ndp->nfsdl_owner); 583 LIST_INIT(&ndp->nfsdl_lock); 584 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 585 ndp->nfsdl_fhlen = newfhlen; 586 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 587 newnfs_copyincred(cred, &ndp->nfsdl_cred); 588 nfscl_lockinit(&ndp->nfsdl_rwlock); 589 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 590 NFSX_UNSIGNED); 591 ndp->nfsdl_stateid.seqid = *tl++; 592 ndp->nfsdl_stateid.other[0] = *tl++; 593 ndp->nfsdl_stateid.other[1] = *tl++; 594 ndp->nfsdl_stateid.other[2] = *tl++; 595 ret = fxdr_unsigned(int, *tl); 596 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 597 ndp->nfsdl_flags = NFSCLDL_WRITE; 598 /* 599 * Indicates how much the file can grow. 600 */ 601 NFSM_DISSECT(tl, u_int32_t *, 602 3 * NFSX_UNSIGNED); 603 limitby = fxdr_unsigned(int, *tl++); 604 switch (limitby) { 605 case NFSV4OPEN_LIMITSIZE: 606 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 607 break; 608 case NFSV4OPEN_LIMITBLOCKS: 609 ndp->nfsdl_sizelimit = 610 fxdr_unsigned(u_int64_t, *tl++); 611 ndp->nfsdl_sizelimit *= 612 fxdr_unsigned(u_int64_t, *tl); 613 break; 614 default: 615 error = NFSERR_BADXDR; 616 goto nfsmout; 617 } 618 } else { 619 ndp->nfsdl_flags = NFSCLDL_READ; 620 } 621 if (ret) 622 ndp->nfsdl_flags |= NFSCLDL_RECALL; 623 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, false, 624 &ret, &acesize, p); 625 if (error) 626 goto nfsmout; 627 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 628 error = NFSERR_BADXDR; 629 goto nfsmout; 630 } 631 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 632 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 633 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 634 NULL, NULL, NULL, p, cred); 635 if (error) 636 goto nfsmout; 637 if (ndp != NULL) { 638 ndp->nfsdl_change = nfsva.na_filerev; 639 ndp->nfsdl_modtime = nfsva.na_mtime; 640 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 641 } 642 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 643 do { 644 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 645 cred, p); 646 if (ret == NFSERR_DELAY) 647 (void) nfs_catnap(PZERO, ret, "nfs_open"); 648 } while (ret == NFSERR_DELAY); 649 error = ret; 650 } 651 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 652 nfscl_assumeposixlocks) 653 op->nfso_posixlock = 1; 654 else 655 op->nfso_posixlock = 0; 656 657 /* 658 * If the server is handing out delegations, but we didn't 659 * get one because an OpenConfirm was required, try the 660 * Open again, to get a delegation. This is a harmless no-op, 661 * from a server's point of view. 662 */ 663 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 664 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 665 && !error && dp == NULL && ndp == NULL && !recursed) { 666 do { 667 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 668 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 669 cred, p, syscred, 1); 670 if (ret == NFSERR_DELAY) 671 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 672 } while (ret == NFSERR_DELAY); 673 if (ret) { 674 if (ndp != NULL) { 675 free(ndp, M_NFSCLDELEG); 676 ndp = NULL; 677 } 678 if (ret == NFSERR_STALECLIENTID || 679 ret == NFSERR_STALEDONTRECOVER || 680 ret == NFSERR_BADSESSION) 681 error = ret; 682 } 683 } 684 } 685 if (nd->nd_repstat != 0 && error == 0) 686 error = nd->nd_repstat; 687 if (error == NFSERR_STALECLIENTID) 688 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 689 nfsmout: 690 if (!error) 691 *dpp = ndp; 692 else if (ndp != NULL) 693 free(ndp, M_NFSCLDELEG); 694 m_freem(nd->nd_mrep); 695 return (error); 696 } 697 698 /* 699 * open downgrade rpc 700 */ 701 int 702 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 703 struct ucred *cred, NFSPROC_T *p) 704 { 705 u_int32_t *tl; 706 struct nfsrv_descript nfsd, *nd = &nfsd; 707 int error; 708 709 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp, cred); 710 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 711 if (NFSHASNFSV4N(VFSTONFS(vp->v_mount))) 712 *tl++ = 0; 713 else 714 *tl++ = op->nfso_stateid.seqid; 715 *tl++ = op->nfso_stateid.other[0]; 716 *tl++ = op->nfso_stateid.other[1]; 717 *tl++ = op->nfso_stateid.other[2]; 718 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 719 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 720 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 721 error = nfscl_request(nd, vp, p, cred, NULL); 722 if (error) 723 return (error); 724 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 725 if (!nd->nd_repstat) { 726 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 727 op->nfso_stateid.seqid = *tl++; 728 op->nfso_stateid.other[0] = *tl++; 729 op->nfso_stateid.other[1] = *tl++; 730 op->nfso_stateid.other[2] = *tl; 731 } 732 if (nd->nd_repstat && error == 0) 733 error = nd->nd_repstat; 734 if (error == NFSERR_STALESTATEID) 735 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 736 nfsmout: 737 m_freem(nd->nd_mrep); 738 return (error); 739 } 740 741 /* 742 * V4 Close operation. 743 */ 744 int 745 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 746 { 747 struct nfsclclient *clp; 748 int error; 749 750 if (vnode_vtype(vp) != VREG) 751 return (0); 752 if (doclose) 753 error = nfscl_doclose(vp, &clp, p); 754 else { 755 error = nfscl_getclose(vp, &clp); 756 if (error == 0) 757 nfscl_clientrelease(clp); 758 } 759 return (error); 760 } 761 762 /* 763 * Close the open. 764 */ 765 int 766 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p, 767 bool loop_on_delayed, bool freeop) 768 { 769 struct nfsrv_descript nfsd, *nd = &nfsd; 770 struct nfscllockowner *lp, *nlp; 771 struct nfscllock *lop, *nlop; 772 struct ucred *tcred; 773 u_int64_t off = 0, len = 0; 774 u_int32_t type = NFSV4LOCKT_READ; 775 int error, do_unlock, trycnt; 776 777 tcred = newnfs_getcred(); 778 newnfs_copycred(&op->nfso_cred, tcred); 779 /* 780 * (Theoretically this could be done in the same 781 * compound as the close, but having multiple 782 * sequenced Ops in the same compound might be 783 * too scary for some servers.) 784 */ 785 if (op->nfso_posixlock) { 786 off = 0; 787 len = NFS64BITSSET; 788 type = NFSV4LOCKT_READ; 789 } 790 791 /* 792 * Since this function is only called from VOP_INACTIVE(), no 793 * other thread will be manipulating this Open. As such, the 794 * lock lists are not being changed by other threads, so it should 795 * be safe to do this without locking. 796 */ 797 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 798 do_unlock = 1; 799 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 800 if (op->nfso_posixlock == 0) { 801 off = lop->nfslo_first; 802 len = lop->nfslo_end - lop->nfslo_first; 803 if (lop->nfslo_type == F_WRLCK) 804 type = NFSV4LOCKT_WRITE; 805 else 806 type = NFSV4LOCKT_READ; 807 } 808 if (do_unlock) { 809 trycnt = 0; 810 do { 811 error = nfsrpc_locku(nd, nmp, lp, off, 812 len, type, tcred, p, 0); 813 if ((nd->nd_repstat == NFSERR_GRACE || 814 nd->nd_repstat == NFSERR_DELAY) && 815 error == 0) 816 (void) nfs_catnap(PZERO, 817 (int)nd->nd_repstat, 818 "nfs_close"); 819 } while ((nd->nd_repstat == NFSERR_GRACE || 820 nd->nd_repstat == NFSERR_DELAY) && 821 error == 0 && trycnt++ < 5); 822 if (op->nfso_posixlock) 823 do_unlock = 0; 824 } 825 nfscl_freelock(lop, 0); 826 } 827 /* 828 * Do a ReleaseLockOwner. 829 * The lock owner name nfsl_owner may be used by other opens for 830 * other files but the lock_owner4 name that nfsrpc_rellockown() 831 * puts on the wire has the file handle for this file appended 832 * to it, so it can be done now. 833 */ 834 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 835 lp->nfsl_open->nfso_fhlen, tcred, p); 836 } 837 838 /* 839 * There could be other Opens for different files on the same 840 * OpenOwner, so locking is required. 841 */ 842 NFSLOCKCLSTATE(); 843 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 844 NFSUNLOCKCLSTATE(); 845 do { 846 error = nfscl_tryclose(op, tcred, nmp, p, loop_on_delayed); 847 if (error == NFSERR_GRACE) 848 (void) nfs_catnap(PZERO, error, "nfs_close"); 849 } while (error == NFSERR_GRACE); 850 NFSLOCKCLSTATE(); 851 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 852 853 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 854 nfscl_freelockowner(lp, 0); 855 if (freeop && error != NFSERR_DELAY) 856 nfscl_freeopen(op, 0, true); 857 NFSUNLOCKCLSTATE(); 858 NFSFREECRED(tcred); 859 return (error); 860 } 861 862 /* 863 * The actual Close RPC. 864 */ 865 int 866 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 867 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 868 int syscred) 869 { 870 u_int32_t *tl; 871 int error; 872 873 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 874 op->nfso_fhlen, NULL, NULL, 0, 0, cred); 875 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 876 if (NFSHASNFSV4N(nmp)) { 877 *tl++ = 0; 878 *tl++ = 0; 879 } else { 880 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 881 *tl++ = op->nfso_stateid.seqid; 882 } 883 *tl++ = op->nfso_stateid.other[0]; 884 *tl++ = op->nfso_stateid.other[1]; 885 *tl = op->nfso_stateid.other[2]; 886 if (syscred) 887 nd->nd_flag |= ND_USEGSSNAME; 888 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 889 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 890 if (error) 891 return (error); 892 if (!NFSHASNFSV4N(nmp)) 893 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 894 if (nd->nd_repstat == 0) 895 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 896 error = nd->nd_repstat; 897 if (!NFSHASNFSV4N(nmp) && error == NFSERR_STALESTATEID) 898 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 899 nfsmout: 900 m_freem(nd->nd_mrep); 901 return (error); 902 } 903 904 /* 905 * V4 Open Confirm RPC. 906 */ 907 int 908 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 909 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 910 { 911 u_int32_t *tl; 912 struct nfsrv_descript nfsd, *nd = &nfsd; 913 struct nfsmount *nmp; 914 int error; 915 916 nmp = VFSTONFS(vp->v_mount); 917 if (NFSHASNFSV4N(nmp)) 918 return (0); /* No confirmation for NFSv4.1. */ 919 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 920 0, 0, NULL); 921 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 922 *tl++ = op->nfso_stateid.seqid; 923 *tl++ = op->nfso_stateid.other[0]; 924 *tl++ = op->nfso_stateid.other[1]; 925 *tl++ = op->nfso_stateid.other[2]; 926 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 927 error = nfscl_request(nd, vp, p, cred, NULL); 928 if (error) 929 return (error); 930 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 931 if (!nd->nd_repstat) { 932 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 933 op->nfso_stateid.seqid = *tl++; 934 op->nfso_stateid.other[0] = *tl++; 935 op->nfso_stateid.other[1] = *tl++; 936 op->nfso_stateid.other[2] = *tl; 937 } 938 error = nd->nd_repstat; 939 if (error == NFSERR_STALESTATEID) 940 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 941 nfsmout: 942 m_freem(nd->nd_mrep); 943 return (error); 944 } 945 946 /* 947 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 948 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 949 */ 950 int 951 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 952 bool *retokp, struct ucred *cred, NFSPROC_T *p) 953 { 954 u_int32_t *tl; 955 struct nfsrv_descript nfsd; 956 struct nfsrv_descript *nd = &nfsd; 957 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 958 u_short port; 959 int error, isinet6 = 0, callblen; 960 nfsquad_t confirm; 961 static u_int32_t rev = 0; 962 struct nfsclds *dsp, *odsp; 963 struct in6_addr a6; 964 struct nfsclsession *tsep; 965 struct rpc_reconupcall recon; 966 struct nfscl_reconarg *rcp; 967 968 if (nfsboottime.tv_sec == 0) 969 NFSSETBOOTTIME(nfsboottime); 970 if (NFSHASNFSV4N(nmp)) { 971 error = NFSERR_BADSESSION; 972 odsp = dsp = NULL; 973 if (retokp != NULL) { 974 NFSLOCKMNT(nmp); 975 odsp = TAILQ_FIRST(&nmp->nm_sess); 976 NFSUNLOCKMNT(nmp); 977 } 978 if (odsp != NULL) { 979 /* 980 * When a session already exists, first try a 981 * CreateSession with the extant ClientID. 982 */ 983 dsp = malloc(sizeof(struct nfsclds) + 984 odsp->nfsclds_servownlen + 1, M_NFSCLDS, 985 M_WAITOK | M_ZERO); 986 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 987 dsp->nfsclds_servownlen = odsp->nfsclds_servownlen; 988 dsp->nfsclds_sess.nfsess_clientid = 989 odsp->nfsclds_sess.nfsess_clientid; 990 dsp->nfsclds_sess.nfsess_sequenceid = 991 odsp->nfsclds_sess.nfsess_sequenceid + 1; 992 dsp->nfsclds_flags = odsp->nfsclds_flags; 993 if (dsp->nfsclds_servownlen > 0) 994 memcpy(dsp->nfsclds_serverown, 995 odsp->nfsclds_serverown, 996 dsp->nfsclds_servownlen + 1); 997 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 998 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 999 NULL, MTX_DEF); 1000 nfscl_initsessionslots(&dsp->nfsclds_sess); 1001 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 1002 &nmp->nm_sockreq, NULL, 1003 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 1004 NFSCL_DEBUG(1, "create session for extant " 1005 "ClientID=%d\n", error); 1006 if (error != 0) { 1007 nfscl_freenfsclds(dsp); 1008 dsp = NULL; 1009 /* 1010 * If *retokp is true, return any error other 1011 * than NFSERR_STALECLIENTID, 1012 * NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER 1013 * so that nfscl_recover() will not loop. 1014 */ 1015 if (*retokp) 1016 return (NFSERR_IO); 1017 } else 1018 *retokp = true; 1019 } else if (retokp != NULL && *retokp) 1020 return (NFSERR_IO); 1021 if (error != 0) { 1022 /* 1023 * Either there was no previous session or the 1024 * CreateSession attempt failed, so... 1025 * do an ExchangeID followed by the CreateSession. 1026 */ 1027 clp->nfsc_rev = rev++; 1028 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0, 1029 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, 1030 cred, p); 1031 NFSCL_DEBUG(1, "aft exch=%d\n", error); 1032 if (error == 0) 1033 error = nfsrpc_createsession(nmp, 1034 &dsp->nfsclds_sess, &nmp->nm_sockreq, NULL, 1035 dsp->nfsclds_sess.nfsess_sequenceid, 1, 1036 cred, p); 1037 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 1038 } 1039 if (error == 0) { 1040 /* 1041 * If the session supports a backchannel, set up 1042 * the BindConnectionToSession call in the krpc 1043 * so that it is done on a reconnection. 1044 */ 1045 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) { 1046 rcp = mem_alloc(sizeof(*rcp)); 1047 rcp->minorvers = nmp->nm_minorvers; 1048 memcpy(rcp->sessionid, 1049 dsp->nfsclds_sess.nfsess_sessionid, 1050 NFSX_V4SESSIONID); 1051 recon.call = nfsrpc_bindconnsess; 1052 recon.arg = rcp; 1053 CLNT_CONTROL(nmp->nm_client, CLSET_RECONUPCALL, 1054 &recon); 1055 } 1056 1057 NFSLOCKMNT(nmp); 1058 /* 1059 * The old sessions cannot be safely free'd 1060 * here, since they may still be used by 1061 * in-progress RPCs. 1062 */ 1063 tsep = NULL; 1064 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) { 1065 /* 1066 * Mark the old session defunct. Needed 1067 * when called from nfscl_hasexpired(). 1068 */ 1069 tsep = NFSMNT_MDSSESSION(nmp); 1070 tsep->nfsess_defunct = 1; 1071 } 1072 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 1073 nfsclds_list); 1074 /* 1075 * Wake up RPCs waiting for a slot on the 1076 * old session. These will then fail with 1077 * NFSERR_BADSESSION and be retried with the 1078 * new session by nfsv4_setsequence(). 1079 * Also wakeup() processes waiting for the 1080 * new session. 1081 */ 1082 if (tsep != NULL) 1083 wakeup(&tsep->nfsess_slots); 1084 wakeup(&nmp->nm_sess); 1085 NFSUNLOCKMNT(nmp); 1086 } else if (dsp != NULL) 1087 nfscl_freenfsclds(dsp); 1088 if (error == 0 && reclaim == 0) { 1089 error = nfsrpc_reclaimcomplete(nmp, cred, p); 1090 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 1091 if (error == NFSERR_COMPLETEALREADY || 1092 error == NFSERR_NOTSUPP) 1093 /* Ignore this error. */ 1094 error = 0; 1095 } 1096 return (error); 1097 } else if (retokp != NULL && *retokp) 1098 return (NFSERR_IO); 1099 clp->nfsc_rev = rev++; 1100 1101 /* 1102 * Allocate a single session structure for NFSv4.0, because some of 1103 * the fields are used by NFSv4.0 although it doesn't do a session. 1104 */ 1105 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 1106 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 1107 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 1108 NFSLOCKMNT(nmp); 1109 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 1110 tsep = NFSMNT_MDSSESSION(nmp); 1111 NFSUNLOCKMNT(nmp); 1112 1113 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0, 1114 NULL); 1115 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1116 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 1117 *tl = txdr_unsigned(clp->nfsc_rev); 1118 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 1119 1120 /* 1121 * set up the callback address 1122 */ 1123 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1124 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1125 callblen = strlen(nfsv4_callbackaddr); 1126 if (callblen == 0) 1127 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1128 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1129 (callblen > 0 || cp != NULL)) { 1130 port = htons(nfsv4_cbport); 1131 cp2 = (u_int8_t *)&port; 1132 #ifdef INET6 1133 if ((callblen > 0 && 1134 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1135 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1136 1137 (void) nfsm_strtom(nd, "tcp6", 4); 1138 if (callblen == 0) { 1139 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1140 ip6add = ip6buf; 1141 } else { 1142 ip6add = nfsv4_callbackaddr; 1143 } 1144 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1145 ip6add, cp2[0], cp2[1]); 1146 } else 1147 #endif 1148 { 1149 (void) nfsm_strtom(nd, "tcp", 3); 1150 if (callblen == 0) 1151 snprintf(addr, INET6_ADDRSTRLEN + 9, 1152 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1153 cp[2], cp[3], cp2[0], cp2[1]); 1154 else 1155 snprintf(addr, INET6_ADDRSTRLEN + 9, 1156 "%s.%d.%d", nfsv4_callbackaddr, 1157 cp2[0], cp2[1]); 1158 } 1159 (void) nfsm_strtom(nd, addr, strlen(addr)); 1160 } else { 1161 (void) nfsm_strtom(nd, "tcp", 3); 1162 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1163 } 1164 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1165 *tl = txdr_unsigned(clp->nfsc_cbident); 1166 nd->nd_flag |= ND_USEGSSNAME; 1167 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1168 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1169 if (error) 1170 return (error); 1171 if (nd->nd_repstat == 0) { 1172 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1173 tsep->nfsess_clientid.lval[0] = *tl++; 1174 tsep->nfsess_clientid.lval[1] = *tl++; 1175 confirm.lval[0] = *tl++; 1176 confirm.lval[1] = *tl; 1177 m_freem(nd->nd_mrep); 1178 nd->nd_mrep = NULL; 1179 1180 /* 1181 * and confirm it. 1182 */ 1183 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1184 NULL, 0, 0, NULL); 1185 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1186 *tl++ = tsep->nfsess_clientid.lval[0]; 1187 *tl++ = tsep->nfsess_clientid.lval[1]; 1188 *tl++ = confirm.lval[0]; 1189 *tl = confirm.lval[1]; 1190 nd->nd_flag |= ND_USEGSSNAME; 1191 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1192 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1193 if (error) 1194 return (error); 1195 m_freem(nd->nd_mrep); 1196 nd->nd_mrep = NULL; 1197 } 1198 error = nd->nd_repstat; 1199 nfsmout: 1200 m_freem(nd->nd_mrep); 1201 return (error); 1202 } 1203 1204 /* 1205 * nfs getattr call. 1206 */ 1207 int 1208 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1209 struct nfsvattr *nap, void *stuff) 1210 { 1211 struct nfsrv_descript nfsd, *nd = &nfsd; 1212 int error; 1213 nfsattrbit_t attrbits; 1214 1215 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred); 1216 if (nd->nd_flag & ND_NFSV4) { 1217 NFSGETATTR_ATTRBIT(&attrbits); 1218 (void) nfsrv_putattrbit(nd, &attrbits); 1219 } 1220 error = nfscl_request(nd, vp, p, cred, stuff); 1221 if (error) 1222 return (error); 1223 if (!nd->nd_repstat) 1224 error = nfsm_loadattr(nd, nap); 1225 else 1226 error = nd->nd_repstat; 1227 m_freem(nd->nd_mrep); 1228 return (error); 1229 } 1230 1231 /* 1232 * nfs getattr call with non-vnode arguments. 1233 */ 1234 int 1235 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1236 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1237 uint32_t *leasep) 1238 { 1239 struct nfsrv_descript nfsd, *nd = &nfsd; 1240 int error, vers = NFS_VER2; 1241 nfsattrbit_t attrbits; 1242 1243 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0, 1244 cred); 1245 if (nd->nd_flag & ND_NFSV4) { 1246 vers = NFS_VER4; 1247 NFSGETATTR_ATTRBIT(&attrbits); 1248 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1249 (void) nfsrv_putattrbit(nd, &attrbits); 1250 } else if (nd->nd_flag & ND_NFSV3) { 1251 vers = NFS_VER3; 1252 } 1253 if (syscred) 1254 nd->nd_flag |= ND_USEGSSNAME; 1255 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1256 NFS_PROG, vers, NULL, 1, xidp, NULL); 1257 if (error) 1258 return (error); 1259 if (nd->nd_repstat == 0) { 1260 if ((nd->nd_flag & ND_NFSV4) != 0) 1261 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1262 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1263 NULL, NULL); 1264 else 1265 error = nfsm_loadattr(nd, nap); 1266 } else 1267 error = nd->nd_repstat; 1268 m_freem(nd->nd_mrep); 1269 return (error); 1270 } 1271 1272 /* 1273 * Do an nfs setattr operation. 1274 */ 1275 int 1276 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1277 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1278 void *stuff) 1279 { 1280 int error, expireret = 0, openerr, retrycnt; 1281 u_int32_t clidrev = 0, mode; 1282 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1283 struct nfsfh *nfhp; 1284 nfsv4stateid_t stateid; 1285 void *lckp; 1286 1287 if (nmp->nm_clp != NULL) 1288 clidrev = nmp->nm_clp->nfsc_clientidrev; 1289 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1290 mode = NFSV4OPEN_ACCESSWRITE; 1291 else 1292 mode = NFSV4OPEN_ACCESSREAD; 1293 retrycnt = 0; 1294 do { 1295 lckp = NULL; 1296 openerr = 1; 1297 if (NFSHASNFSV4(nmp)) { 1298 nfhp = VTONFS(vp)->n_fhp; 1299 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1300 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1301 if (error && vnode_vtype(vp) == VREG && 1302 (mode == NFSV4OPEN_ACCESSWRITE || 1303 nfstest_openallsetattr)) { 1304 /* 1305 * No Open stateid, so try and open the file 1306 * now. 1307 */ 1308 if (mode == NFSV4OPEN_ACCESSWRITE) 1309 openerr = nfsrpc_open(vp, FWRITE, cred, 1310 p); 1311 else 1312 openerr = nfsrpc_open(vp, FREAD, cred, 1313 p); 1314 if (!openerr) 1315 (void) nfscl_getstateid(vp, 1316 nfhp->nfh_fh, nfhp->nfh_len, 1317 mode, 0, cred, p, &stateid, &lckp); 1318 } 1319 } 1320 if (vap != NULL) 1321 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1322 rnap, attrflagp, stuff); 1323 else 1324 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1325 stuff); 1326 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1327 NFSLOCKMNT(nmp); 1328 nmp->nm_state |= NFSSTA_OPENMODE; 1329 NFSUNLOCKMNT(nmp); 1330 } 1331 if (error == NFSERR_STALESTATEID) 1332 nfscl_initiate_recovery(nmp->nm_clp); 1333 if (lckp != NULL) 1334 nfscl_lockderef(lckp); 1335 if (!openerr) 1336 (void) nfsrpc_close(vp, 0, p); 1337 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1338 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1339 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1340 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1341 } else if ((error == NFSERR_EXPIRED || 1342 ((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) && 1343 error == NFSERR_BADSTATEID)) && clidrev != 0) { 1344 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1345 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) && 1346 NFSHASNFSV4N(nmp)) { 1347 error = EIO; 1348 } 1349 retrycnt++; 1350 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1351 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1352 error == NFSERR_BADSESSION || 1353 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1354 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1355 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1356 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1357 retrycnt < 4)); 1358 if (error && retrycnt >= 4) 1359 error = EIO; 1360 return (error); 1361 } 1362 1363 static int 1364 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1365 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1366 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1367 { 1368 u_int32_t *tl; 1369 struct nfsrv_descript nfsd, *nd = &nfsd; 1370 int error; 1371 nfsattrbit_t attrbits; 1372 1373 *attrflagp = 0; 1374 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp, cred); 1375 if (nd->nd_flag & ND_NFSV4) 1376 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1377 vap->va_type = vnode_vtype(vp); 1378 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1379 if (nd->nd_flag & ND_NFSV3) { 1380 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1381 *tl = newnfs_false; 1382 } else if (nd->nd_flag & ND_NFSV4) { 1383 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1384 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1385 NFSGETATTR_ATTRBIT(&attrbits); 1386 (void) nfsrv_putattrbit(nd, &attrbits); 1387 } 1388 error = nfscl_request(nd, vp, p, cred, stuff); 1389 if (error) 1390 return (error); 1391 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1392 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, NULL); 1393 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1394 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1395 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1396 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1397 m_freem(nd->nd_mrep); 1398 if (nd->nd_repstat && !error) 1399 error = nd->nd_repstat; 1400 return (error); 1401 } 1402 1403 /* 1404 * nfs lookup rpc 1405 */ 1406 int 1407 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1408 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1409 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1410 { 1411 u_int32_t *tl; 1412 struct nfsrv_descript nfsd, *nd = &nfsd; 1413 struct nfsmount *nmp; 1414 struct nfsnode *np; 1415 struct nfsfh *nfhp; 1416 nfsattrbit_t attrbits; 1417 int error = 0, lookupp = 0; 1418 1419 *attrflagp = 0; 1420 *dattrflagp = 0; 1421 if (vnode_vtype(dvp) != VDIR) 1422 return (ENOTDIR); 1423 nmp = VFSTONFS(dvp->v_mount); 1424 if (len > NFS_MAXNAMLEN) 1425 return (ENAMETOOLONG); 1426 if (NFSHASNFSV4(nmp) && len == 1 && 1427 name[0] == '.') { 1428 /* 1429 * Just return the current dir's fh. 1430 */ 1431 np = VTONFS(dvp); 1432 nfhp = malloc(sizeof (struct nfsfh) + 1433 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1434 nfhp->nfh_len = np->n_fhp->nfh_len; 1435 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1436 *nfhpp = nfhp; 1437 return (0); 1438 } 1439 if (NFSHASNFSV4(nmp) && len == 2 && 1440 name[0] == '.' && name[1] == '.') { 1441 lookupp = 1; 1442 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp, cred); 1443 } else { 1444 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp, cred); 1445 (void) nfsm_strtom(nd, name, len); 1446 } 1447 if (nd->nd_flag & ND_NFSV4) { 1448 NFSGETATTR_ATTRBIT(&attrbits); 1449 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1450 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1451 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1452 (void) nfsrv_putattrbit(nd, &attrbits); 1453 } 1454 error = nfscl_request(nd, dvp, p, cred, stuff); 1455 if (error) 1456 return (error); 1457 if (nd->nd_repstat) { 1458 /* 1459 * When an NFSv4 Lookupp returns ENOENT, it means that 1460 * the lookup is at the root of an fs, so return this dir. 1461 */ 1462 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1463 np = VTONFS(dvp); 1464 nfhp = malloc(sizeof (struct nfsfh) + 1465 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1466 nfhp->nfh_len = np->n_fhp->nfh_len; 1467 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1468 *nfhpp = nfhp; 1469 m_freem(nd->nd_mrep); 1470 return (0); 1471 } 1472 if (nd->nd_flag & ND_NFSV3) 1473 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1474 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1475 ND_NFSV4) { 1476 /* Load the directory attributes. */ 1477 error = nfsm_loadattr(nd, dnap); 1478 if (error == 0) 1479 *dattrflagp = 1; 1480 } 1481 goto nfsmout; 1482 } 1483 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1484 /* Load the directory attributes. */ 1485 error = nfsm_loadattr(nd, dnap); 1486 if (error != 0) 1487 goto nfsmout; 1488 *dattrflagp = 1; 1489 /* Skip over the Lookup and GetFH operation status values. */ 1490 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1491 } 1492 error = nfsm_getfh(nd, nfhpp); 1493 if (error) 1494 goto nfsmout; 1495 1496 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1497 if ((nd->nd_flag & ND_NFSV3) && !error) 1498 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1499 nfsmout: 1500 m_freem(nd->nd_mrep); 1501 if (!error && nd->nd_repstat) 1502 error = nd->nd_repstat; 1503 return (error); 1504 } 1505 1506 /* 1507 * Do a readlink rpc. 1508 */ 1509 int 1510 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1511 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1512 { 1513 u_int32_t *tl; 1514 struct nfsrv_descript nfsd, *nd = &nfsd; 1515 struct nfsnode *np = VTONFS(vp); 1516 nfsattrbit_t attrbits; 1517 int error, len, cangetattr = 1; 1518 1519 *attrflagp = 0; 1520 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp, cred); 1521 if (nd->nd_flag & ND_NFSV4) { 1522 /* 1523 * And do a Getattr op. 1524 */ 1525 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1526 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1527 NFSGETATTR_ATTRBIT(&attrbits); 1528 (void) nfsrv_putattrbit(nd, &attrbits); 1529 } 1530 error = nfscl_request(nd, vp, p, cred, stuff); 1531 if (error) 1532 return (error); 1533 if (nd->nd_flag & ND_NFSV3) 1534 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1535 if (!nd->nd_repstat && !error) { 1536 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1537 /* 1538 * This seems weird to me, but must have been added to 1539 * FreeBSD for some reason. The only thing I can think of 1540 * is that there was/is some server that replies with 1541 * more link data than it should? 1542 */ 1543 if (len == NFS_MAXPATHLEN) { 1544 NFSLOCKNODE(np); 1545 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1546 len = np->n_size; 1547 cangetattr = 0; 1548 } 1549 NFSUNLOCKNODE(np); 1550 } 1551 error = nfsm_mbufuio(nd, uiop, len); 1552 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1553 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1554 } 1555 if (nd->nd_repstat && !error) 1556 error = nd->nd_repstat; 1557 nfsmout: 1558 m_freem(nd->nd_mrep); 1559 return (error); 1560 } 1561 1562 /* 1563 * Read operation. 1564 */ 1565 int 1566 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1567 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1568 { 1569 int error, expireret = 0, retrycnt; 1570 u_int32_t clidrev = 0; 1571 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1572 struct nfsnode *np = VTONFS(vp); 1573 struct ucred *newcred; 1574 struct nfsfh *nfhp = NULL; 1575 nfsv4stateid_t stateid; 1576 void *lckp; 1577 1578 if (nmp->nm_clp != NULL) 1579 clidrev = nmp->nm_clp->nfsc_clientidrev; 1580 newcred = cred; 1581 if (NFSHASNFSV4(nmp)) { 1582 nfhp = np->n_fhp; 1583 newcred = NFSNEWCRED(cred); 1584 } 1585 retrycnt = 0; 1586 do { 1587 lckp = NULL; 1588 if (NFSHASNFSV4(nmp)) 1589 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1590 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1591 &lckp); 1592 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1593 attrflagp, stuff); 1594 if (error == NFSERR_OPENMODE) { 1595 NFSLOCKMNT(nmp); 1596 nmp->nm_state |= NFSSTA_OPENMODE; 1597 NFSUNLOCKMNT(nmp); 1598 } 1599 if (error == NFSERR_STALESTATEID) 1600 nfscl_initiate_recovery(nmp->nm_clp); 1601 if (lckp != NULL) 1602 nfscl_lockderef(lckp); 1603 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1604 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1605 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1606 (void) nfs_catnap(PZERO, error, "nfs_read"); 1607 } else if ((error == NFSERR_EXPIRED || 1608 ((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) && 1609 error == NFSERR_BADSTATEID)) && clidrev != 0) { 1610 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1611 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) && 1612 NFSHASNFSV4N(nmp)) { 1613 error = EIO; 1614 } 1615 retrycnt++; 1616 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1617 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1618 error == NFSERR_BADSESSION || 1619 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1620 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1621 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1622 (error == NFSERR_OPENMODE && retrycnt < 4)); 1623 if (error && retrycnt >= 4) 1624 error = EIO; 1625 if (NFSHASNFSV4(nmp)) 1626 NFSFREECRED(newcred); 1627 return (error); 1628 } 1629 1630 /* 1631 * The actual read RPC. 1632 */ 1633 static int 1634 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1635 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1636 int *attrflagp, void *stuff) 1637 { 1638 u_int32_t *tl; 1639 int error = 0, len, retlen, tsiz, eof = 0; 1640 struct nfsrv_descript nfsd; 1641 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1642 struct nfsrv_descript *nd = &nfsd; 1643 int rsize; 1644 off_t tmp_off; 1645 1646 *attrflagp = 0; 1647 tsiz = uiop->uio_resid; 1648 tmp_off = uiop->uio_offset + tsiz; 1649 NFSLOCKMNT(nmp); 1650 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1651 NFSUNLOCKMNT(nmp); 1652 return (EFBIG); 1653 } 1654 rsize = nmp->nm_rsize; 1655 NFSUNLOCKMNT(nmp); 1656 nd->nd_mrep = NULL; 1657 while (tsiz > 0) { 1658 *attrflagp = 0; 1659 len = (tsiz > rsize) ? rsize : tsiz; 1660 NFSCL_REQSTART(nd, NFSPROC_READ, vp, cred); 1661 if (nd->nd_flag & ND_NFSV4) 1662 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1663 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1664 if (nd->nd_flag & ND_NFSV2) { 1665 *tl++ = txdr_unsigned(uiop->uio_offset); 1666 *tl++ = txdr_unsigned(len); 1667 *tl = 0; 1668 } else { 1669 txdr_hyper(uiop->uio_offset, tl); 1670 *(tl + 2) = txdr_unsigned(len); 1671 } 1672 /* 1673 * Since I can't do a Getattr for NFSv4 for Write, there 1674 * doesn't seem any point in doing one here, either. 1675 * (See the comment in nfsrpc_writerpc() for more info.) 1676 */ 1677 error = nfscl_request(nd, vp, p, cred, stuff); 1678 if (error) 1679 return (error); 1680 if (nd->nd_flag & ND_NFSV3) { 1681 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1682 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1683 error = nfsm_loadattr(nd, nap); 1684 if (!error) 1685 *attrflagp = 1; 1686 } 1687 if (nd->nd_repstat || error) { 1688 if (!error) 1689 error = nd->nd_repstat; 1690 goto nfsmout; 1691 } 1692 if (nd->nd_flag & ND_NFSV3) { 1693 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1694 eof = fxdr_unsigned(int, *(tl + 1)); 1695 } else if (nd->nd_flag & ND_NFSV4) { 1696 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1697 eof = fxdr_unsigned(int, *tl); 1698 } 1699 NFSM_STRSIZ(retlen, len); 1700 error = nfsm_mbufuio(nd, uiop, retlen); 1701 if (error) 1702 goto nfsmout; 1703 m_freem(nd->nd_mrep); 1704 nd->nd_mrep = NULL; 1705 tsiz -= retlen; 1706 if (!(nd->nd_flag & ND_NFSV2)) { 1707 if (eof || retlen == 0) 1708 tsiz = 0; 1709 } else if (retlen < len) 1710 tsiz = 0; 1711 } 1712 return (0); 1713 nfsmout: 1714 if (nd->nd_mrep != NULL) 1715 m_freem(nd->nd_mrep); 1716 return (error); 1717 } 1718 1719 /* 1720 * nfs write operation 1721 * When called_from_strategy != 0, it should return EIO for an error that 1722 * indicates recovery is in progress, so that the buffer will be left 1723 * dirty and be written back to the server later. If it loops around, 1724 * the recovery thread could get stuck waiting for the buffer and recovery 1725 * will then deadlock. 1726 */ 1727 int 1728 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1729 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1730 int called_from_strategy, int ioflag) 1731 { 1732 int error, expireret = 0, retrycnt, nostateid; 1733 u_int32_t clidrev = 0; 1734 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1735 struct nfsnode *np = VTONFS(vp); 1736 struct ucred *newcred; 1737 struct nfsfh *nfhp = NULL; 1738 nfsv4stateid_t stateid; 1739 void *lckp; 1740 1741 KASSERT(*must_commit >= 0 && *must_commit <= 2, 1742 ("nfsrpc_write: must_commit out of range=%d", *must_commit)); 1743 if (nmp->nm_clp != NULL) 1744 clidrev = nmp->nm_clp->nfsc_clientidrev; 1745 newcred = cred; 1746 if (NFSHASNFSV4(nmp)) { 1747 newcred = NFSNEWCRED(cred); 1748 nfhp = np->n_fhp; 1749 } 1750 retrycnt = 0; 1751 do { 1752 lckp = NULL; 1753 nostateid = 0; 1754 if (NFSHASNFSV4(nmp)) { 1755 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1756 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1757 &lckp); 1758 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1759 stateid.other[2] == 0) { 1760 nostateid = 1; 1761 NFSCL_DEBUG(1, "stateid0 in write\n"); 1762 } 1763 } 1764 1765 /* 1766 * If there is no stateid for NFSv4, it means this is an 1767 * extraneous write after close. Basically a poorly 1768 * implemented buffer cache. Just don't do the write. 1769 */ 1770 if (nostateid) 1771 error = 0; 1772 else 1773 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1774 newcred, &stateid, p, nap, attrflagp, ioflag); 1775 if (error == NFSERR_STALESTATEID) 1776 nfscl_initiate_recovery(nmp->nm_clp); 1777 if (lckp != NULL) 1778 nfscl_lockderef(lckp); 1779 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1780 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1781 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1782 (void) nfs_catnap(PZERO, error, "nfs_write"); 1783 } else if ((error == NFSERR_EXPIRED || 1784 ((!NFSHASINT(nmp) || !NFSHASNFSV4N(nmp)) && 1785 error == NFSERR_BADSTATEID)) && clidrev != 0) { 1786 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1787 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp) && 1788 NFSHASNFSV4N(nmp)) { 1789 error = EIO; 1790 } 1791 retrycnt++; 1792 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1793 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1794 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1795 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1796 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1797 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1798 if (error != 0 && (retrycnt >= 4 || 1799 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1800 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1801 error = EIO; 1802 if (NFSHASNFSV4(nmp)) 1803 NFSFREECRED(newcred); 1804 return (error); 1805 } 1806 1807 /* 1808 * The actual write RPC. 1809 */ 1810 static int 1811 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1812 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1813 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, int ioflag) 1814 { 1815 u_int32_t *tl; 1816 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1817 struct nfsnode *np = VTONFS(vp); 1818 int error = 0, len, rlen, commit, committed = NFSWRITE_FILESYNC; 1819 int wccflag = 0; 1820 int32_t backup; 1821 struct nfsrv_descript *nd; 1822 nfsattrbit_t attrbits; 1823 uint64_t tmp_off; 1824 ssize_t tsiz, wsize; 1825 bool do_append; 1826 1827 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1828 *attrflagp = 0; 1829 tsiz = uiop->uio_resid; 1830 tmp_off = uiop->uio_offset + tsiz; 1831 NFSLOCKMNT(nmp); 1832 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1833 NFSUNLOCKMNT(nmp); 1834 return (EFBIG); 1835 } 1836 wsize = nmp->nm_wsize; 1837 do_append = false; 1838 if ((ioflag & IO_APPEND) != 0 && NFSHASNFSV4(nmp) && !NFSHASPNFS(nmp)) 1839 do_append = true; 1840 NFSUNLOCKMNT(nmp); 1841 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK); 1842 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1843 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1844 while (tsiz > 0) { 1845 *attrflagp = 0; 1846 len = (tsiz > wsize) ? wsize : tsiz; 1847 if (do_append) 1848 NFSCL_REQSTART(nd, NFSPROC_APPENDWRITE, vp, cred); 1849 else 1850 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp, cred); 1851 if (nd->nd_flag & ND_NFSV4) { 1852 if (do_append) { 1853 NFSZERO_ATTRBIT(&attrbits); 1854 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 1855 nfsrv_putattrbit(nd, &attrbits); 1856 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED + 1857 NFSX_HYPER); 1858 *tl++ = txdr_unsigned(NFSX_HYPER); 1859 txdr_hyper(uiop->uio_offset, tl); tl += 2; 1860 *tl = txdr_unsigned(NFSV4OP_WRITE); 1861 } 1862 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1863 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1864 txdr_hyper(uiop->uio_offset, tl); 1865 tl += 2; 1866 *tl++ = txdr_unsigned(*iomode); 1867 *tl = txdr_unsigned(len); 1868 } else if (nd->nd_flag & ND_NFSV3) { 1869 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1870 txdr_hyper(uiop->uio_offset, tl); 1871 tl += 2; 1872 *tl++ = txdr_unsigned(len); 1873 *tl++ = txdr_unsigned(*iomode); 1874 *tl = txdr_unsigned(len); 1875 } else { 1876 u_int32_t x; 1877 1878 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1879 /* 1880 * Not sure why someone changed this, since the 1881 * RFC clearly states that "beginoffset" and 1882 * "totalcount" are ignored, but it wouldn't 1883 * surprise me if there's a busted server out there. 1884 */ 1885 /* Set both "begin" and "current" to non-garbage. */ 1886 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1887 *tl++ = x; /* "begin offset" */ 1888 *tl++ = x; /* "current offset" */ 1889 x = txdr_unsigned(len); 1890 *tl++ = x; /* total to this offset */ 1891 *tl = x; /* size of this write */ 1892 } 1893 nfsm_uiombuf(nd, uiop, len); 1894 /* 1895 * Although it is tempting to do a normal Getattr Op in the 1896 * NFSv4 compound, the result can be a nearly hung client 1897 * system if the Getattr asks for Owner and/or OwnerGroup. 1898 * It occurs when the client can't map either the Owner or 1899 * Owner_group name in the Getattr reply to a uid/gid. When 1900 * there is a cache miss, the kernel does an upcall to the 1901 * nfsuserd. Then, it can try and read the local /etc/passwd 1902 * or /etc/group file. It can then block in getnewbuf(), 1903 * waiting for dirty writes to be pushed to the NFS server. 1904 * The only reason this doesn't result in a complete 1905 * deadlock, is that the upcall times out and allows 1906 * the write to complete. However, progress is so slow 1907 * that it might just as well be deadlocked. 1908 * As such, we get the rest of the attributes, but not 1909 * Owner or Owner_group. 1910 * nb: nfscl_loadattrcache() needs to be told that these 1911 * partial attributes from a write rpc are being 1912 * passed in, via a argument flag. 1913 */ 1914 if (nd->nd_flag & ND_NFSV4) { 1915 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1916 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1917 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1918 (void) nfsrv_putattrbit(nd, &attrbits); 1919 } 1920 error = nfscl_request(nd, vp, p, cred, NULL); 1921 if (error) { 1922 free(nd, M_TEMP); 1923 return (error); 1924 } 1925 if (nd->nd_repstat) { 1926 /* 1927 * In case the rpc gets retried, roll 1928 * the uio fileds changed by nfsm_uiombuf() 1929 * back. 1930 */ 1931 uiop->uio_offset -= len; 1932 uiop->uio_resid += len; 1933 uiop->uio_iov->iov_base = 1934 (char *)uiop->uio_iov->iov_base - len; 1935 uiop->uio_iov->iov_len += len; 1936 } 1937 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1938 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1939 &wccflag, &tmp_off); 1940 if (error) 1941 goto nfsmout; 1942 } 1943 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1944 (ND_NFSV4 | ND_NOMOREDATA) && 1945 nd->nd_repstat == NFSERR_NOTSAME && do_append) { 1946 /* 1947 * Verify of the file's size failed, so redo the 1948 * write using the file's size as returned in 1949 * the wcc attributes. 1950 */ 1951 if (tmp_off + tsiz <= nmp->nm_maxfilesize) { 1952 do_append = false; 1953 uiop->uio_offset = tmp_off; 1954 m_freem(nd->nd_mrep); 1955 nd->nd_mrep = NULL; 1956 continue; 1957 } else 1958 nd->nd_repstat = EFBIG; 1959 } 1960 if (!nd->nd_repstat) { 1961 if (do_append) { 1962 /* Strip off the Write reply status. */ 1963 do_append = false; 1964 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 1965 } 1966 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1967 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1968 + NFSX_VERF); 1969 rlen = fxdr_unsigned(int, *tl++); 1970 if (rlen == 0) { 1971 error = NFSERR_IO; 1972 goto nfsmout; 1973 } else if (rlen < len) { 1974 backup = len - rlen; 1975 uiop->uio_iov->iov_base = 1976 (char *)uiop->uio_iov->iov_base - 1977 backup; 1978 uiop->uio_iov->iov_len += backup; 1979 uiop->uio_offset -= backup; 1980 uiop->uio_resid += backup; 1981 len = rlen; 1982 } 1983 commit = fxdr_unsigned(int, *tl++); 1984 1985 /* 1986 * Return the lowest commitment level 1987 * obtained by any of the RPCs. 1988 */ 1989 if (committed == NFSWRITE_FILESYNC) 1990 committed = commit; 1991 else if (committed == NFSWRITE_DATASYNC && 1992 commit == NFSWRITE_UNSTABLE) 1993 committed = commit; 1994 NFSLOCKMNT(nmp); 1995 if (!NFSHASWRITEVERF(nmp)) { 1996 NFSBCOPY((caddr_t)tl, 1997 (caddr_t)&nmp->nm_verf[0], 1998 NFSX_VERF); 1999 NFSSETWRITEVERF(nmp); 2000 } else if (NFSBCMP(tl, nmp->nm_verf, 2001 NFSX_VERF) && *must_commit != 2) { 2002 *must_commit = 1; 2003 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 2004 } 2005 NFSUNLOCKMNT(nmp); 2006 } 2007 if (nd->nd_flag & ND_NFSV4) 2008 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2009 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 2010 error = nfsm_loadattr(nd, nap); 2011 if (!error) 2012 *attrflagp = NFS_LATTR_NOSHRINK; 2013 } 2014 } else { 2015 error = nd->nd_repstat; 2016 } 2017 if (error) 2018 goto nfsmout; 2019 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 2020 m_freem(nd->nd_mrep); 2021 nd->nd_mrep = NULL; 2022 tsiz -= len; 2023 } 2024 nfsmout: 2025 if (nd->nd_mrep != NULL) 2026 m_freem(nd->nd_mrep); 2027 *iomode = committed; 2028 if (nd->nd_repstat && !error) 2029 error = nd->nd_repstat; 2030 free(nd, M_TEMP); 2031 return (error); 2032 } 2033 2034 /* 2035 * nfs mknod rpc 2036 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 2037 * mode set to specify the file type and the size field for rdev. 2038 */ 2039 int 2040 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2041 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 2042 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2043 int *attrflagp, int *dattrflagp, void *dstuff) 2044 { 2045 u_int32_t *tl; 2046 int error = 0; 2047 struct nfsrv_descript nfsd, *nd = &nfsd; 2048 nfsattrbit_t attrbits; 2049 2050 *nfhpp = NULL; 2051 *attrflagp = 0; 2052 *dattrflagp = 0; 2053 if (namelen > NFS_MAXNAMLEN) 2054 return (ENAMETOOLONG); 2055 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp, cred); 2056 if (nd->nd_flag & ND_NFSV4) { 2057 if (vtyp == VBLK || vtyp == VCHR) { 2058 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2059 *tl++ = vtonfsv34_type(vtyp); 2060 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2061 *tl = txdr_unsigned(NFSMINOR(rdev)); 2062 } else { 2063 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2064 *tl = vtonfsv34_type(vtyp); 2065 } 2066 } 2067 (void) nfsm_strtom(nd, name, namelen); 2068 if (nd->nd_flag & ND_NFSV3) { 2069 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2070 *tl = vtonfsv34_type(vtyp); 2071 } 2072 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2073 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2074 if ((nd->nd_flag & ND_NFSV3) && 2075 (vtyp == VCHR || vtyp == VBLK)) { 2076 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2077 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2078 *tl = txdr_unsigned(NFSMINOR(rdev)); 2079 } 2080 if (nd->nd_flag & ND_NFSV4) { 2081 NFSGETATTR_ATTRBIT(&attrbits); 2082 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2083 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2084 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2085 (void) nfsrv_putattrbit(nd, &attrbits); 2086 } 2087 if (nd->nd_flag & ND_NFSV2) 2088 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 2089 error = nfscl_request(nd, dvp, p, cred, dstuff); 2090 if (error) 2091 return (error); 2092 if (nd->nd_flag & ND_NFSV4) 2093 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2094 if (!nd->nd_repstat) { 2095 if (nd->nd_flag & ND_NFSV4) { 2096 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2097 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2098 if (error) 2099 goto nfsmout; 2100 } 2101 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2102 if (error) 2103 goto nfsmout; 2104 } 2105 if (nd->nd_flag & ND_NFSV3) 2106 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2107 if (!error && nd->nd_repstat) 2108 error = nd->nd_repstat; 2109 nfsmout: 2110 m_freem(nd->nd_mrep); 2111 return (error); 2112 } 2113 2114 /* 2115 * nfs file create call 2116 * Mostly just call the approriate routine. (I separated out v4, so that 2117 * error recovery wouldn't be as difficult.) 2118 */ 2119 int 2120 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2121 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2122 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2123 int *attrflagp, int *dattrflagp, void *dstuff) 2124 { 2125 int error = 0, newone, expireret = 0, retrycnt, unlocked; 2126 struct nfsclowner *owp; 2127 struct nfscldeleg *dp; 2128 struct nfsmount *nmp = VFSTONFS(dvp->v_mount); 2129 u_int32_t clidrev; 2130 2131 if (NFSHASNFSV4(nmp)) { 2132 retrycnt = 0; 2133 do { 2134 dp = NULL; 2135 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 2136 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 2137 NULL, 1, true); 2138 if (error) 2139 return (error); 2140 if (nmp->nm_clp != NULL) 2141 clidrev = nmp->nm_clp->nfsc_clientidrev; 2142 else 2143 clidrev = 0; 2144 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 2145 nfs_numnfscbd == 0 || retrycnt > 0) 2146 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 2147 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2148 attrflagp, dattrflagp, dstuff, &unlocked); 2149 else 2150 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 2151 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2152 attrflagp, dattrflagp, dstuff, &unlocked); 2153 /* 2154 * There is no need to invalidate cached attributes here, 2155 * since new post-delegation issue attributes are always 2156 * returned by nfsrpc_createv4() and these will update the 2157 * attribute cache. 2158 */ 2159 if (dp != NULL) 2160 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2161 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2162 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2163 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2164 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2165 error == NFSERR_BADSESSION) { 2166 (void) nfs_catnap(PZERO, error, "nfs_open"); 2167 } else if ((error == NFSERR_EXPIRED || 2168 error == NFSERR_BADSTATEID) && clidrev != 0) { 2169 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2170 retrycnt++; 2171 } 2172 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2173 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2174 error == NFSERR_BADSESSION || 2175 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2176 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2177 if (error && retrycnt >= 4) 2178 error = EIO; 2179 } else { 2180 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2181 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2182 dstuff); 2183 } 2184 return (error); 2185 } 2186 2187 /* 2188 * The create rpc for v2 and 3. 2189 */ 2190 static int 2191 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2192 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2193 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2194 int *attrflagp, int *dattrflagp, void *dstuff) 2195 { 2196 u_int32_t *tl; 2197 int error = 0; 2198 struct nfsrv_descript nfsd, *nd = &nfsd; 2199 2200 *nfhpp = NULL; 2201 *attrflagp = 0; 2202 *dattrflagp = 0; 2203 if (namelen > NFS_MAXNAMLEN) 2204 return (ENAMETOOLONG); 2205 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp, cred); 2206 (void) nfsm_strtom(nd, name, namelen); 2207 if (nd->nd_flag & ND_NFSV3) { 2208 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2209 if (fmode & O_EXCL) { 2210 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2211 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2212 *tl++ = cverf.lval[0]; 2213 *tl = cverf.lval[1]; 2214 } else { 2215 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2216 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2217 } 2218 } else { 2219 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2220 } 2221 error = nfscl_request(nd, dvp, p, cred, dstuff); 2222 if (error) 2223 return (error); 2224 if (nd->nd_repstat == 0) { 2225 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2226 if (error) 2227 goto nfsmout; 2228 } 2229 if (nd->nd_flag & ND_NFSV3) 2230 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2231 if (nd->nd_repstat != 0 && error == 0) 2232 error = nd->nd_repstat; 2233 nfsmout: 2234 m_freem(nd->nd_mrep); 2235 return (error); 2236 } 2237 2238 static int 2239 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2240 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2241 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2242 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2243 int *dattrflagp, void *dstuff, int *unlockedp) 2244 { 2245 u_int32_t *tl; 2246 int error = 0, deleg, newone, ret, acesize, limitby; 2247 struct nfsrv_descript nfsd, *nd = &nfsd; 2248 struct nfsclopen *op; 2249 struct nfscldeleg *dp = NULL; 2250 struct nfsnode *np; 2251 struct nfsfh *nfhp; 2252 nfsattrbit_t attrbits; 2253 nfsv4stateid_t stateid; 2254 u_int32_t rflags; 2255 struct nfsmount *nmp; 2256 struct nfsclsession *tsep; 2257 2258 nmp = VFSTONFS(dvp->v_mount); 2259 np = VTONFS(dvp); 2260 *unlockedp = 0; 2261 *nfhpp = NULL; 2262 *dpp = NULL; 2263 *attrflagp = 0; 2264 *dattrflagp = 0; 2265 if (namelen > NFS_MAXNAMLEN) 2266 return (ENAMETOOLONG); 2267 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp, cred); 2268 /* 2269 * For V4, this is actually an Open op. 2270 */ 2271 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2272 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2273 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2274 NFSV4OPEN_ACCESSREAD); 2275 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2276 tsep = nfsmnt_mdssession(nmp); 2277 *tl++ = tsep->nfsess_clientid.lval[0]; 2278 *tl = tsep->nfsess_clientid.lval[1]; 2279 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2280 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2281 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2282 if (fmode & O_EXCL) { 2283 if (NFSHASNFSV4N(nmp)) { 2284 if (NFSHASSESSPERSIST(nmp)) { 2285 /* Use GUARDED for persistent sessions. */ 2286 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2287 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2288 } else { 2289 /* Otherwise, use EXCLUSIVE4_1. */ 2290 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2291 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2292 *tl++ = cverf.lval[0]; 2293 *tl = cverf.lval[1]; 2294 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2295 } 2296 } else { 2297 /* NFSv4.0 */ 2298 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2299 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2300 *tl++ = cverf.lval[0]; 2301 *tl = cverf.lval[1]; 2302 } 2303 } else { 2304 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2305 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2306 } 2307 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2308 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2309 (void) nfsm_strtom(nd, name, namelen); 2310 /* Get the new file's handle and attributes. */ 2311 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2312 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2313 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2314 NFSGETATTR_ATTRBIT(&attrbits); 2315 (void) nfsrv_putattrbit(nd, &attrbits); 2316 /* Get the directory's post-op attributes. */ 2317 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2318 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2319 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2320 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2321 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2322 (void) nfsrv_putattrbit(nd, &attrbits); 2323 error = nfscl_request(nd, dvp, p, cred, dstuff); 2324 if (error) 2325 return (error); 2326 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2327 if (nd->nd_repstat == 0) { 2328 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2329 6 * NFSX_UNSIGNED); 2330 stateid.seqid = *tl++; 2331 stateid.other[0] = *tl++; 2332 stateid.other[1] = *tl++; 2333 stateid.other[2] = *tl; 2334 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2335 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2336 if (error) 2337 goto nfsmout; 2338 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2339 deleg = fxdr_unsigned(int, *tl); 2340 if (deleg == NFSV4OPEN_DELEGATEREAD || 2341 deleg == NFSV4OPEN_DELEGATEWRITE) { 2342 if (!(owp->nfsow_clp->nfsc_flags & 2343 NFSCLFLAGS_FIRSTDELEG)) 2344 owp->nfsow_clp->nfsc_flags |= 2345 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2346 dp = malloc( 2347 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2348 M_NFSCLDELEG, M_WAITOK); 2349 LIST_INIT(&dp->nfsdl_owner); 2350 LIST_INIT(&dp->nfsdl_lock); 2351 dp->nfsdl_clp = owp->nfsow_clp; 2352 newnfs_copyincred(cred, &dp->nfsdl_cred); 2353 nfscl_lockinit(&dp->nfsdl_rwlock); 2354 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2355 NFSX_UNSIGNED); 2356 dp->nfsdl_stateid.seqid = *tl++; 2357 dp->nfsdl_stateid.other[0] = *tl++; 2358 dp->nfsdl_stateid.other[1] = *tl++; 2359 dp->nfsdl_stateid.other[2] = *tl++; 2360 ret = fxdr_unsigned(int, *tl); 2361 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2362 dp->nfsdl_flags = NFSCLDL_WRITE; 2363 /* 2364 * Indicates how much the file can grow. 2365 */ 2366 NFSM_DISSECT(tl, u_int32_t *, 2367 3 * NFSX_UNSIGNED); 2368 limitby = fxdr_unsigned(int, *tl++); 2369 switch (limitby) { 2370 case NFSV4OPEN_LIMITSIZE: 2371 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2372 break; 2373 case NFSV4OPEN_LIMITBLOCKS: 2374 dp->nfsdl_sizelimit = 2375 fxdr_unsigned(u_int64_t, *tl++); 2376 dp->nfsdl_sizelimit *= 2377 fxdr_unsigned(u_int64_t, *tl); 2378 break; 2379 default: 2380 error = NFSERR_BADXDR; 2381 goto nfsmout; 2382 } 2383 } else { 2384 dp->nfsdl_flags = NFSCLDL_READ; 2385 } 2386 if (ret) 2387 dp->nfsdl_flags |= NFSCLDL_RECALL; 2388 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, false, 2389 &ret, &acesize, p); 2390 if (error) 2391 goto nfsmout; 2392 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2393 error = NFSERR_BADXDR; 2394 goto nfsmout; 2395 } 2396 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2397 if (error) 2398 goto nfsmout; 2399 /* Get rid of the PutFH and Getattr status values. */ 2400 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2401 /* Load the directory attributes. */ 2402 error = nfsm_loadattr(nd, dnap); 2403 if (error) 2404 goto nfsmout; 2405 *dattrflagp = 1; 2406 if (dp != NULL && *attrflagp) { 2407 dp->nfsdl_change = nnap->na_filerev; 2408 dp->nfsdl_modtime = nnap->na_mtime; 2409 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2410 } 2411 /* 2412 * We can now complete the Open state. 2413 */ 2414 nfhp = *nfhpp; 2415 if (dp != NULL) { 2416 dp->nfsdl_fhlen = nfhp->nfh_len; 2417 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2418 } 2419 /* 2420 * Get an Open structure that will be 2421 * attached to the OpenOwner, acquired already. 2422 */ 2423 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2424 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2425 cred, p, NULL, &op, &newone, NULL, 0, false); 2426 if (error) 2427 goto nfsmout; 2428 op->nfso_stateid = stateid; 2429 newnfs_copyincred(cred, &op->nfso_cred); 2430 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2431 do { 2432 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2433 nfhp->nfh_len, op, cred, p); 2434 if (ret == NFSERR_DELAY) 2435 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2436 } while (ret == NFSERR_DELAY); 2437 error = ret; 2438 } 2439 2440 /* 2441 * If the server is handing out delegations, but we didn't 2442 * get one because an OpenConfirm was required, try the 2443 * Open again, to get a delegation. This is a harmless no-op, 2444 * from a server's point of view. 2445 */ 2446 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2447 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2448 !error && dp == NULL) { 2449 do { 2450 ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp, 2451 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2452 nfhp->nfh_fh, nfhp->nfh_len, 2453 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2454 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2455 if (ret == NFSERR_DELAY) 2456 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2457 } while (ret == NFSERR_DELAY); 2458 if (ret) { 2459 if (dp != NULL) { 2460 free(dp, M_NFSCLDELEG); 2461 dp = NULL; 2462 } 2463 if (ret == NFSERR_STALECLIENTID || 2464 ret == NFSERR_STALEDONTRECOVER || 2465 ret == NFSERR_BADSESSION) 2466 error = ret; 2467 } 2468 } 2469 nfscl_openrelease(nmp, op, error, newone); 2470 *unlockedp = 1; 2471 } 2472 if (nd->nd_repstat != 0 && error == 0) 2473 error = nd->nd_repstat; 2474 if (error == NFSERR_STALECLIENTID) 2475 nfscl_initiate_recovery(owp->nfsow_clp); 2476 nfsmout: 2477 if (!error) 2478 *dpp = dp; 2479 else if (dp != NULL) 2480 free(dp, M_NFSCLDELEG); 2481 m_freem(nd->nd_mrep); 2482 return (error); 2483 } 2484 2485 /* 2486 * Nfs remove rpc 2487 */ 2488 int 2489 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2490 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2491 void *dstuff) 2492 { 2493 u_int32_t *tl; 2494 struct nfsrv_descript nfsd, *nd = &nfsd; 2495 struct nfsnode *np; 2496 struct nfsmount *nmp; 2497 nfsv4stateid_t dstateid; 2498 int error, ret = 0, i; 2499 2500 *dattrflagp = 0; 2501 if (namelen > NFS_MAXNAMLEN) 2502 return (ENAMETOOLONG); 2503 nmp = VFSTONFS(dvp->v_mount); 2504 tryagain: 2505 if (NFSHASNFSV4(nmp) && ret == 0) { 2506 ret = nfscl_removedeleg(vp, p, &dstateid); 2507 if (ret == 1) { 2508 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp, cred); 2509 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2510 NFSX_UNSIGNED); 2511 if (NFSHASNFSV4N(nmp)) 2512 *tl++ = 0; 2513 else 2514 *tl++ = dstateid.seqid; 2515 *tl++ = dstateid.other[0]; 2516 *tl++ = dstateid.other[1]; 2517 *tl++ = dstateid.other[2]; 2518 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2519 np = VTONFS(dvp); 2520 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2521 np->n_fhp->nfh_len, 0); 2522 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2523 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2524 } 2525 } else { 2526 ret = 0; 2527 } 2528 if (ret == 0) 2529 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp, cred); 2530 (void) nfsm_strtom(nd, name, namelen); 2531 error = nfscl_request(nd, dvp, p, cred, dstuff); 2532 if (error) 2533 return (error); 2534 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2535 /* For NFSv4, parse out any Delereturn replies. */ 2536 if (ret > 0 && nd->nd_repstat != 0 && 2537 (nd->nd_flag & ND_NOMOREDATA)) { 2538 /* 2539 * If the Delegreturn failed, try again without 2540 * it. The server will Recall, as required. 2541 */ 2542 m_freem(nd->nd_mrep); 2543 goto tryagain; 2544 } 2545 for (i = 0; i < (ret * 2); i++) { 2546 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2547 ND_NFSV4) { 2548 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2549 if (*(tl + 1)) 2550 nd->nd_flag |= ND_NOMOREDATA; 2551 } 2552 } 2553 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2554 } 2555 if (nd->nd_repstat && !error) 2556 error = nd->nd_repstat; 2557 nfsmout: 2558 m_freem(nd->nd_mrep); 2559 return (error); 2560 } 2561 2562 /* 2563 * Do an nfs rename rpc. 2564 */ 2565 int 2566 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2567 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2568 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2569 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2570 { 2571 u_int32_t *tl; 2572 struct nfsrv_descript nfsd, *nd = &nfsd; 2573 struct nfsmount *nmp; 2574 struct nfsnode *np; 2575 nfsattrbit_t attrbits; 2576 nfsv4stateid_t fdstateid, tdstateid; 2577 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2578 2579 *fattrflagp = 0; 2580 *tattrflagp = 0; 2581 nmp = VFSTONFS(fdvp->v_mount); 2582 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2583 return (ENAMETOOLONG); 2584 tryagain: 2585 if (NFSHASNFSV4(nmp) && ret == 0) { 2586 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2587 &tdstateid, &gottd, p); 2588 if (gotfd && gottd) { 2589 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp, cred); 2590 } else if (gotfd) { 2591 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp, cred); 2592 } else if (gottd) { 2593 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp, cred); 2594 } 2595 if (gotfd) { 2596 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2597 if (NFSHASNFSV4N(nmp)) 2598 *tl++ = 0; 2599 else 2600 *tl++ = fdstateid.seqid; 2601 *tl++ = fdstateid.other[0]; 2602 *tl++ = fdstateid.other[1]; 2603 *tl = fdstateid.other[2]; 2604 if (gottd) { 2605 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2606 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2607 np = VTONFS(tvp); 2608 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2609 np->n_fhp->nfh_len, 0); 2610 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2611 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2612 } 2613 } 2614 if (gottd) { 2615 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2616 if (NFSHASNFSV4N(nmp)) 2617 *tl++ = 0; 2618 else 2619 *tl++ = tdstateid.seqid; 2620 *tl++ = tdstateid.other[0]; 2621 *tl++ = tdstateid.other[1]; 2622 *tl = tdstateid.other[2]; 2623 } 2624 if (ret > 0) { 2625 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2626 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2627 np = VTONFS(fdvp); 2628 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2629 np->n_fhp->nfh_len, 0); 2630 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2631 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2632 } 2633 } else { 2634 ret = 0; 2635 } 2636 if (ret == 0) 2637 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp, cred); 2638 if (nd->nd_flag & ND_NFSV4) { 2639 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2640 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2641 NFSWCCATTR_ATTRBIT(&attrbits); 2642 (void) nfsrv_putattrbit(nd, &attrbits); 2643 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2644 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2645 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2646 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2647 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2648 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2649 (void) nfsrv_putattrbit(nd, &attrbits); 2650 nd->nd_flag |= ND_V4WCCATTR; 2651 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2652 *tl = txdr_unsigned(NFSV4OP_RENAME); 2653 } 2654 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2655 if (!(nd->nd_flag & ND_NFSV4)) 2656 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2657 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2658 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2659 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2660 if (error) 2661 return (error); 2662 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2663 /* For NFSv4, parse out any Delereturn replies. */ 2664 if (ret > 0 && nd->nd_repstat != 0 && 2665 (nd->nd_flag & ND_NOMOREDATA)) { 2666 /* 2667 * If the Delegreturn failed, try again without 2668 * it. The server will Recall, as required. 2669 */ 2670 m_freem(nd->nd_mrep); 2671 goto tryagain; 2672 } 2673 for (i = 0; i < (ret * 2); i++) { 2674 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2675 ND_NFSV4) { 2676 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2677 if (*(tl + 1)) { 2678 if (i == 0 && ret > 1) { 2679 /* 2680 * If the Delegreturn failed, try again 2681 * without it. The server will Recall, as 2682 * required. 2683 * If ret > 1, the first iteration of this 2684 * loop is the second DelegReturn result. 2685 */ 2686 m_freem(nd->nd_mrep); 2687 goto tryagain; 2688 } else { 2689 nd->nd_flag |= ND_NOMOREDATA; 2690 } 2691 } 2692 } 2693 } 2694 /* Now, the first wcc attribute reply. */ 2695 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2696 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2697 if (*(tl + 1)) 2698 nd->nd_flag |= ND_NOMOREDATA; 2699 } 2700 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, NULL); 2701 /* and the second wcc attribute reply. */ 2702 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2703 !error) { 2704 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2705 if (*(tl + 1)) 2706 nd->nd_flag |= ND_NOMOREDATA; 2707 } 2708 if (!error) 2709 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2710 NULL, NULL); 2711 } 2712 if (nd->nd_repstat && !error) 2713 error = nd->nd_repstat; 2714 nfsmout: 2715 m_freem(nd->nd_mrep); 2716 return (error); 2717 } 2718 2719 /* 2720 * nfs hard link create rpc 2721 */ 2722 int 2723 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2724 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2725 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2726 { 2727 u_int32_t *tl; 2728 struct nfsrv_descript nfsd, *nd = &nfsd; 2729 nfsattrbit_t attrbits; 2730 int error = 0; 2731 2732 *attrflagp = 0; 2733 *dattrflagp = 0; 2734 if (namelen > NFS_MAXNAMLEN) 2735 return (ENAMETOOLONG); 2736 NFSCL_REQSTART(nd, NFSPROC_LINK, vp, cred); 2737 if (nd->nd_flag & ND_NFSV4) { 2738 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2739 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2740 } 2741 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2742 VTONFS(dvp)->n_fhp->nfh_len, 0); 2743 if (nd->nd_flag & ND_NFSV4) { 2744 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2745 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2746 NFSWCCATTR_ATTRBIT(&attrbits); 2747 (void) nfsrv_putattrbit(nd, &attrbits); 2748 nd->nd_flag |= ND_V4WCCATTR; 2749 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2750 *tl = txdr_unsigned(NFSV4OP_LINK); 2751 } 2752 (void) nfsm_strtom(nd, name, namelen); 2753 error = nfscl_request(nd, vp, p, cred, dstuff); 2754 if (error) 2755 return (error); 2756 if (nd->nd_flag & ND_NFSV3) { 2757 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2758 if (!error) 2759 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2760 NULL, NULL); 2761 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2762 /* 2763 * First, parse out the PutFH and Getattr result. 2764 */ 2765 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2766 if (!(*(tl + 1))) 2767 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2768 if (*(tl + 1)) 2769 nd->nd_flag |= ND_NOMOREDATA; 2770 /* 2771 * Get the pre-op attributes. 2772 */ 2773 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2774 } 2775 if (nd->nd_repstat && !error) 2776 error = nd->nd_repstat; 2777 nfsmout: 2778 m_freem(nd->nd_mrep); 2779 return (error); 2780 } 2781 2782 /* 2783 * nfs symbolic link create rpc 2784 */ 2785 int 2786 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target, 2787 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2788 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2789 int *dattrflagp, void *dstuff) 2790 { 2791 u_int32_t *tl; 2792 struct nfsrv_descript nfsd, *nd = &nfsd; 2793 struct nfsmount *nmp; 2794 int slen, error = 0; 2795 2796 *nfhpp = NULL; 2797 *attrflagp = 0; 2798 *dattrflagp = 0; 2799 nmp = VFSTONFS(dvp->v_mount); 2800 slen = strlen(target); 2801 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2802 return (ENAMETOOLONG); 2803 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp, cred); 2804 if (nd->nd_flag & ND_NFSV4) { 2805 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2806 *tl = txdr_unsigned(NFLNK); 2807 (void) nfsm_strtom(nd, target, slen); 2808 } 2809 (void) nfsm_strtom(nd, name, namelen); 2810 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2811 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2812 if (!(nd->nd_flag & ND_NFSV4)) 2813 (void) nfsm_strtom(nd, target, slen); 2814 if (nd->nd_flag & ND_NFSV2) 2815 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2816 error = nfscl_request(nd, dvp, p, cred, dstuff); 2817 if (error) 2818 return (error); 2819 if (nd->nd_flag & ND_NFSV4) 2820 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2821 if ((nd->nd_flag & ND_NFSV3) && !error) { 2822 if (!nd->nd_repstat) 2823 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2824 if (!error) 2825 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2826 NULL, NULL); 2827 } 2828 if (nd->nd_repstat && !error) 2829 error = nd->nd_repstat; 2830 m_freem(nd->nd_mrep); 2831 /* 2832 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2833 * Only do this if vfs.nfs.ignore_eexist is set. 2834 * Never do this for NFSv4.1 or later minor versions, since sessions 2835 * should guarantee "exactly once" RPC semantics. 2836 */ 2837 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2838 nmp->nm_minorvers == 0)) 2839 error = 0; 2840 return (error); 2841 } 2842 2843 /* 2844 * nfs make dir rpc 2845 */ 2846 int 2847 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2848 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2849 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2850 int *dattrflagp, void *dstuff) 2851 { 2852 u_int32_t *tl; 2853 struct nfsrv_descript nfsd, *nd = &nfsd; 2854 nfsattrbit_t attrbits; 2855 int error = 0; 2856 struct nfsfh *fhp; 2857 struct nfsmount *nmp; 2858 2859 *nfhpp = NULL; 2860 *attrflagp = 0; 2861 *dattrflagp = 0; 2862 nmp = VFSTONFS(dvp->v_mount); 2863 fhp = VTONFS(dvp)->n_fhp; 2864 if (namelen > NFS_MAXNAMLEN) 2865 return (ENAMETOOLONG); 2866 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp, cred); 2867 if (nd->nd_flag & ND_NFSV4) { 2868 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2869 *tl = txdr_unsigned(NFDIR); 2870 } 2871 (void) nfsm_strtom(nd, name, namelen); 2872 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2873 if (nd->nd_flag & ND_NFSV4) { 2874 NFSGETATTR_ATTRBIT(&attrbits); 2875 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2876 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2877 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2878 (void) nfsrv_putattrbit(nd, &attrbits); 2879 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2880 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2881 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2882 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2883 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2884 (void) nfsrv_putattrbit(nd, &attrbits); 2885 } 2886 error = nfscl_request(nd, dvp, p, cred, dstuff); 2887 if (error) 2888 return (error); 2889 if (nd->nd_flag & ND_NFSV4) 2890 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2891 if (!nd->nd_repstat && !error) { 2892 if (nd->nd_flag & ND_NFSV4) { 2893 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2894 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2895 } 2896 if (!error) 2897 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2898 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2899 /* Get rid of the PutFH and Getattr status values. */ 2900 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2901 /* Load the directory attributes. */ 2902 error = nfsm_loadattr(nd, dnap); 2903 if (error == 0) 2904 *dattrflagp = 1; 2905 } 2906 } 2907 if ((nd->nd_flag & ND_NFSV3) && !error) 2908 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2909 if (nd->nd_repstat && !error) 2910 error = nd->nd_repstat; 2911 nfsmout: 2912 m_freem(nd->nd_mrep); 2913 /* 2914 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2915 * Only do this if vfs.nfs.ignore_eexist is set. 2916 * Never do this for NFSv4.1 or later minor versions, since sessions 2917 * should guarantee "exactly once" RPC semantics. 2918 */ 2919 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2920 nmp->nm_minorvers == 0)) 2921 error = 0; 2922 return (error); 2923 } 2924 2925 /* 2926 * nfs remove directory call 2927 */ 2928 int 2929 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2930 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2931 { 2932 struct nfsrv_descript nfsd, *nd = &nfsd; 2933 int error = 0; 2934 2935 *dattrflagp = 0; 2936 if (namelen > NFS_MAXNAMLEN) 2937 return (ENAMETOOLONG); 2938 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp, cred); 2939 (void) nfsm_strtom(nd, name, namelen); 2940 error = nfscl_request(nd, dvp, p, cred, dstuff); 2941 if (error) 2942 return (error); 2943 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2944 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, NULL); 2945 if (nd->nd_repstat && !error) 2946 error = nd->nd_repstat; 2947 m_freem(nd->nd_mrep); 2948 /* 2949 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2950 */ 2951 if (error == ENOENT) 2952 error = 0; 2953 return (error); 2954 } 2955 2956 /* 2957 * Readdir rpc. 2958 * Always returns with either uio_resid unchanged, if you are at the 2959 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2960 * filled in. 2961 * I felt this would allow caching of directory blocks more easily 2962 * than returning a pertially filled block. 2963 * Directory offset cookies: 2964 * Oh my, what to do with them... 2965 * I can think of three ways to deal with them: 2966 * 1 - have the layer above these RPCs maintain a map between logical 2967 * directory byte offsets and the NFS directory offset cookies 2968 * 2 - pass the opaque directory offset cookies up into userland 2969 * and let the libc functions deal with them, via the system call 2970 * 3 - return them to userland in the "struct dirent", so future versions 2971 * of libc can use them and do whatever is necessary to make things work 2972 * above these rpc calls, in the meantime 2973 * For now, I do #3 by "hiding" the directory offset cookies after the 2974 * d_name field in struct dirent. This is space inside d_reclen that 2975 * will be ignored by anything that doesn't know about them. 2976 * The directory offset cookies are filled in as the last 8 bytes of 2977 * each directory entry, after d_name. Someday, the userland libc 2978 * functions may be able to use these. In the meantime, it satisfies 2979 * OpenBSD's requirements for cookies being returned. 2980 * If expects the directory offset cookie for the read to be in uio_offset 2981 * and returns the one for the next entry after this directory block in 2982 * there, as well. 2983 */ 2984 int 2985 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2986 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2987 int *eofp, void *stuff) 2988 { 2989 int len, left; 2990 struct dirent *dp = NULL; 2991 u_int32_t *tl; 2992 nfsquad_t cookie, ncookie; 2993 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2994 struct nfsnode *dnp = VTONFS(vp); 2995 struct nfsvattr nfsva; 2996 struct nfsrv_descript nfsd, *nd = &nfsd; 2997 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2998 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2999 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3000 char *cp; 3001 nfsattrbit_t attrbits, dattrbits; 3002 u_int32_t rderr, *tl2 = NULL; 3003 size_t tresid; 3004 3005 KASSERT(uiop->uio_iovcnt == 1 && 3006 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 3007 ("nfs readdirrpc bad uio")); 3008 ncookie.lval[0] = ncookie.lval[1] = 0; 3009 /* 3010 * There is no point in reading a lot more than uio_resid, however 3011 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 3012 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 3013 * will never make readsize > nm_readdirsize. 3014 */ 3015 readsize = nmp->nm_readdirsize; 3016 if (readsize > uiop->uio_resid) 3017 readsize = uiop->uio_resid + DIRBLKSIZ; 3018 3019 *attrflagp = 0; 3020 if (eofp) 3021 *eofp = 0; 3022 tresid = uiop->uio_resid; 3023 cookie.lval[0] = cookiep->nfsuquad[0]; 3024 cookie.lval[1] = cookiep->nfsuquad[1]; 3025 nd->nd_mrep = NULL; 3026 3027 /* 3028 * For NFSv4, first create the "." and ".." entries. 3029 */ 3030 if (NFSHASNFSV4(nmp)) { 3031 reqsize = 6 * NFSX_UNSIGNED; 3032 NFSGETATTR_ATTRBIT(&dattrbits); 3033 NFSZERO_ATTRBIT(&attrbits); 3034 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3035 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 3036 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3037 NFSATTRBIT_MOUNTEDONFILEID)) { 3038 NFSSETBIT_ATTRBIT(&attrbits, 3039 NFSATTRBIT_MOUNTEDONFILEID); 3040 gotmnton = 1; 3041 } else { 3042 /* 3043 * Must fake it. Use the fileno, except when the 3044 * fsid is != to that of the directory. For that 3045 * case, generate a fake fileno that is not the same. 3046 */ 3047 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3048 gotmnton = 0; 3049 } 3050 3051 /* 3052 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3053 */ 3054 if (uiop->uio_offset == 0) { 3055 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp, cred); 3056 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3057 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3058 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3059 (void) nfsrv_putattrbit(nd, &attrbits); 3060 error = nfscl_request(nd, vp, p, cred, stuff); 3061 if (error) 3062 return (error); 3063 dotfileid = 0; /* Fake out the compiler. */ 3064 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3065 error = nfsm_loadattr(nd, &nfsva); 3066 if (error != 0) 3067 goto nfsmout; 3068 dotfileid = nfsva.na_fileid; 3069 } 3070 if (nd->nd_repstat == 0) { 3071 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3072 len = fxdr_unsigned(int, *(tl + 4)); 3073 if (len > 0 && len <= NFSX_V4FHMAX) 3074 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3075 else 3076 error = EPERM; 3077 if (!error) { 3078 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3079 nfsva.na_mntonfileno = UINT64_MAX; 3080 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3081 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3082 NULL, NULL, NULL, p, cred); 3083 if (error) { 3084 dotdotfileid = dotfileid; 3085 } else if (gotmnton) { 3086 if (nfsva.na_mntonfileno != UINT64_MAX) 3087 dotdotfileid = nfsva.na_mntonfileno; 3088 else 3089 dotdotfileid = nfsva.na_fileid; 3090 } else if (nfsva.na_filesid[0] == 3091 dnp->n_vattr.na_filesid[0] && 3092 nfsva.na_filesid[1] == 3093 dnp->n_vattr.na_filesid[1]) { 3094 dotdotfileid = nfsva.na_fileid; 3095 } else { 3096 do { 3097 fakefileno--; 3098 } while (fakefileno == 3099 nfsva.na_fileid); 3100 dotdotfileid = fakefileno; 3101 } 3102 } 3103 } else if (nd->nd_repstat == NFSERR_NOENT) { 3104 /* 3105 * Lookupp returns NFSERR_NOENT when we are 3106 * at the root, so just use the current dir. 3107 */ 3108 nd->nd_repstat = 0; 3109 dotdotfileid = dotfileid; 3110 } else { 3111 error = nd->nd_repstat; 3112 } 3113 m_freem(nd->nd_mrep); 3114 if (error) 3115 return (error); 3116 nd->nd_mrep = NULL; 3117 dp = (struct dirent *)uiop->uio_iov->iov_base; 3118 dp->d_pad0 = dp->d_pad1 = 0; 3119 dp->d_off = 0; 3120 dp->d_type = DT_DIR; 3121 dp->d_fileno = dotfileid; 3122 dp->d_namlen = 1; 3123 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3124 dp->d_name[0] = '.'; 3125 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3126 /* 3127 * Just make these offset cookie 0. 3128 */ 3129 tl = (u_int32_t *)&dp->d_name[8]; 3130 *tl++ = 0; 3131 *tl = 0; 3132 blksiz += dp->d_reclen; 3133 uiop->uio_resid -= dp->d_reclen; 3134 uiop->uio_offset += dp->d_reclen; 3135 uiop->uio_iov->iov_base = 3136 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3137 uiop->uio_iov->iov_len -= dp->d_reclen; 3138 dp = (struct dirent *)uiop->uio_iov->iov_base; 3139 dp->d_pad0 = dp->d_pad1 = 0; 3140 dp->d_off = 0; 3141 dp->d_type = DT_DIR; 3142 dp->d_fileno = dotdotfileid; 3143 dp->d_namlen = 2; 3144 *((uint64_t *)dp->d_name) = 0; 3145 dp->d_name[0] = '.'; 3146 dp->d_name[1] = '.'; 3147 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3148 /* 3149 * Just make these offset cookie 0. 3150 */ 3151 tl = (u_int32_t *)&dp->d_name[8]; 3152 *tl++ = 0; 3153 *tl = 0; 3154 blksiz += dp->d_reclen; 3155 uiop->uio_resid -= dp->d_reclen; 3156 uiop->uio_offset += dp->d_reclen; 3157 uiop->uio_iov->iov_base = 3158 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3159 uiop->uio_iov->iov_len -= dp->d_reclen; 3160 } 3161 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 3162 } else { 3163 reqsize = 5 * NFSX_UNSIGNED; 3164 } 3165 3166 /* 3167 * Loop around doing readdir rpc's of size readsize. 3168 * The stopping criteria is EOF or buffer full. 3169 */ 3170 while (more_dirs && bigenough) { 3171 *attrflagp = 0; 3172 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp, cred); 3173 if (nd->nd_flag & ND_NFSV2) { 3174 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3175 *tl++ = cookie.lval[1]; 3176 *tl = txdr_unsigned(readsize); 3177 } else { 3178 NFSM_BUILD(tl, u_int32_t *, reqsize); 3179 *tl++ = cookie.lval[0]; 3180 *tl++ = cookie.lval[1]; 3181 if (cookie.qval == 0) { 3182 *tl++ = 0; 3183 *tl++ = 0; 3184 } else { 3185 NFSLOCKNODE(dnp); 3186 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3187 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3188 NFSUNLOCKNODE(dnp); 3189 } 3190 if (nd->nd_flag & ND_NFSV4) { 3191 *tl++ = txdr_unsigned(readsize); 3192 *tl = txdr_unsigned(readsize); 3193 (void) nfsrv_putattrbit(nd, &attrbits); 3194 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3195 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3196 (void) nfsrv_putattrbit(nd, &dattrbits); 3197 } else { 3198 *tl = txdr_unsigned(readsize); 3199 } 3200 } 3201 error = nfscl_request(nd, vp, p, cred, stuff); 3202 if (error) 3203 return (error); 3204 if (!(nd->nd_flag & ND_NFSV2)) { 3205 if (nd->nd_flag & ND_NFSV3) 3206 error = nfscl_postop_attr(nd, nap, attrflagp, 3207 stuff); 3208 if (!nd->nd_repstat && !error) { 3209 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3210 NFSLOCKNODE(dnp); 3211 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3212 dnp->n_cookieverf.nfsuquad[1] = *tl; 3213 NFSUNLOCKNODE(dnp); 3214 } 3215 } 3216 if (nd->nd_repstat || error) { 3217 if (!error) 3218 error = nd->nd_repstat; 3219 goto nfsmout; 3220 } 3221 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3222 more_dirs = fxdr_unsigned(int, *tl); 3223 if (!more_dirs) 3224 tryformoredirs = 0; 3225 3226 /* loop through the dir entries, doctoring them to 4bsd form */ 3227 while (more_dirs && bigenough) { 3228 if (nd->nd_flag & ND_NFSV4) { 3229 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3230 ncookie.lval[0] = *tl++; 3231 ncookie.lval[1] = *tl++; 3232 len = fxdr_unsigned(int, *tl); 3233 } else if (nd->nd_flag & ND_NFSV3) { 3234 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3235 nfsva.na_fileid = fxdr_hyper(tl); 3236 tl += 2; 3237 len = fxdr_unsigned(int, *tl); 3238 } else { 3239 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3240 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3241 *tl++); 3242 len = fxdr_unsigned(int, *tl); 3243 } 3244 if (len <= 0 || len > NFS_MAXNAMLEN) { 3245 error = EBADRPC; 3246 goto nfsmout; 3247 } 3248 tlen = roundup2(len, 8); 3249 if (tlen == len) 3250 tlen += 8; /* To ensure null termination. */ 3251 left = DIRBLKSIZ - blksiz; 3252 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3253 NFSBZERO(uiop->uio_iov->iov_base, left); 3254 dp->d_reclen += left; 3255 uiop->uio_iov->iov_base = 3256 (char *)uiop->uio_iov->iov_base + left; 3257 uiop->uio_iov->iov_len -= left; 3258 uiop->uio_resid -= left; 3259 uiop->uio_offset += left; 3260 blksiz = 0; 3261 } 3262 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3263 uiop->uio_resid) 3264 bigenough = 0; 3265 if (bigenough) { 3266 dp = (struct dirent *)uiop->uio_iov->iov_base; 3267 dp->d_pad0 = dp->d_pad1 = 0; 3268 dp->d_off = 0; 3269 dp->d_namlen = len; 3270 dp->d_reclen = _GENERIC_DIRLEN(len) + 3271 NFSX_HYPER; 3272 dp->d_type = DT_UNKNOWN; 3273 blksiz += dp->d_reclen; 3274 if (blksiz == DIRBLKSIZ) 3275 blksiz = 0; 3276 uiop->uio_resid -= DIRHDSIZ; 3277 uiop->uio_offset += DIRHDSIZ; 3278 uiop->uio_iov->iov_base = 3279 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3280 uiop->uio_iov->iov_len -= DIRHDSIZ; 3281 error = nfsm_mbufuio(nd, uiop, len); 3282 if (error) 3283 goto nfsmout; 3284 cp = uiop->uio_iov->iov_base; 3285 tlen -= len; 3286 NFSBZERO(cp, tlen); 3287 cp += tlen; /* points to cookie storage */ 3288 tl2 = (u_int32_t *)cp; 3289 uiop->uio_iov->iov_base = 3290 (char *)uiop->uio_iov->iov_base + tlen + 3291 NFSX_HYPER; 3292 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3293 uiop->uio_resid -= tlen + NFSX_HYPER; 3294 uiop->uio_offset += (tlen + NFSX_HYPER); 3295 } else { 3296 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3297 if (error) 3298 goto nfsmout; 3299 } 3300 if (nd->nd_flag & ND_NFSV4) { 3301 rderr = 0; 3302 nfsva.na_mntonfileno = UINT64_MAX; 3303 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3304 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3305 NULL, NULL, &rderr, p, cred); 3306 if (error) 3307 goto nfsmout; 3308 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3309 } else if (nd->nd_flag & ND_NFSV3) { 3310 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3311 ncookie.lval[0] = *tl++; 3312 ncookie.lval[1] = *tl++; 3313 } else { 3314 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3315 ncookie.lval[0] = 0; 3316 ncookie.lval[1] = *tl++; 3317 } 3318 if (bigenough) { 3319 if (nd->nd_flag & ND_NFSV4) { 3320 if (rderr) { 3321 dp->d_fileno = 0; 3322 } else { 3323 if (gotmnton) { 3324 if (nfsva.na_mntonfileno != UINT64_MAX) 3325 dp->d_fileno = nfsva.na_mntonfileno; 3326 else 3327 dp->d_fileno = nfsva.na_fileid; 3328 } else if (nfsva.na_filesid[0] == 3329 dnp->n_vattr.na_filesid[0] && 3330 nfsva.na_filesid[1] == 3331 dnp->n_vattr.na_filesid[1]) { 3332 dp->d_fileno = nfsva.na_fileid; 3333 } else { 3334 do { 3335 fakefileno--; 3336 } while (fakefileno == 3337 nfsva.na_fileid); 3338 dp->d_fileno = fakefileno; 3339 } 3340 dp->d_type = vtonfs_dtype(nfsva.na_type); 3341 } 3342 } else { 3343 dp->d_fileno = nfsva.na_fileid; 3344 } 3345 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3346 ncookie.lval[0]; 3347 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3348 ncookie.lval[1]; 3349 } 3350 more_dirs = fxdr_unsigned(int, *tl); 3351 } 3352 /* 3353 * If at end of rpc data, get the eof boolean 3354 */ 3355 if (!more_dirs) { 3356 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3357 eof = fxdr_unsigned(int, *tl); 3358 if (tryformoredirs) 3359 more_dirs = !eof; 3360 if (nd->nd_flag & ND_NFSV4) { 3361 error = nfscl_postop_attr(nd, nap, attrflagp, 3362 stuff); 3363 if (error) 3364 goto nfsmout; 3365 } 3366 } 3367 m_freem(nd->nd_mrep); 3368 nd->nd_mrep = NULL; 3369 } 3370 /* 3371 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3372 * by increasing d_reclen for the last record. 3373 */ 3374 if (blksiz > 0) { 3375 left = DIRBLKSIZ - blksiz; 3376 NFSBZERO(uiop->uio_iov->iov_base, left); 3377 dp->d_reclen += left; 3378 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3379 left; 3380 uiop->uio_iov->iov_len -= left; 3381 uiop->uio_resid -= left; 3382 uiop->uio_offset += left; 3383 } 3384 3385 /* 3386 * If returning no data, assume end of file. 3387 * If not bigenough, return not end of file, since you aren't 3388 * returning all the data 3389 * Otherwise, return the eof flag from the server. 3390 */ 3391 if (eofp) { 3392 if (tresid == ((size_t)(uiop->uio_resid))) 3393 *eofp = 1; 3394 else if (!bigenough) 3395 *eofp = 0; 3396 else 3397 *eofp = eof; 3398 } 3399 3400 /* 3401 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3402 */ 3403 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3404 dp = (struct dirent *)uiop->uio_iov->iov_base; 3405 NFSBZERO(dp, DIRBLKSIZ); 3406 dp->d_type = DT_UNKNOWN; 3407 tl = (u_int32_t *)&dp->d_name[4]; 3408 *tl++ = cookie.lval[0]; 3409 *tl = cookie.lval[1]; 3410 dp->d_reclen = DIRBLKSIZ; 3411 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3412 DIRBLKSIZ; 3413 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3414 uiop->uio_resid -= DIRBLKSIZ; 3415 uiop->uio_offset += DIRBLKSIZ; 3416 } 3417 3418 nfsmout: 3419 if (nd->nd_mrep != NULL) 3420 m_freem(nd->nd_mrep); 3421 return (error); 3422 } 3423 3424 #ifndef APPLE 3425 /* 3426 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3427 * (Also used for NFS V4 when mount flag set.) 3428 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3429 */ 3430 int 3431 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3432 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3433 int *eofp, void *stuff) 3434 { 3435 int len, left; 3436 struct dirent *dp = NULL; 3437 u_int32_t *tl; 3438 vnode_t newvp = NULLVP; 3439 struct nfsrv_descript nfsd, *nd = &nfsd; 3440 struct nameidata nami, *ndp = &nami; 3441 struct componentname *cnp = &ndp->ni_cnd; 3442 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3443 struct nfsnode *dnp = VTONFS(vp), *np; 3444 struct nfsvattr nfsva; 3445 struct nfsfh *nfhp; 3446 nfsquad_t cookie, ncookie; 3447 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3448 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3449 int isdotdot = 0, unlocknewvp = 0; 3450 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3451 u_int64_t fileno = 0; 3452 char *cp; 3453 nfsattrbit_t attrbits, dattrbits; 3454 size_t tresid; 3455 u_int32_t *tl2 = NULL, rderr; 3456 struct timespec dctime, ts; 3457 bool attr_ok; 3458 3459 KASSERT(uiop->uio_iovcnt == 1 && 3460 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 3461 ("nfs readdirplusrpc bad uio")); 3462 ncookie.lval[0] = ncookie.lval[1] = 0; 3463 timespecclear(&dctime); 3464 *attrflagp = 0; 3465 if (eofp != NULL) 3466 *eofp = 0; 3467 ndp->ni_dvp = vp; 3468 nd->nd_mrep = NULL; 3469 cookie.lval[0] = cookiep->nfsuquad[0]; 3470 cookie.lval[1] = cookiep->nfsuquad[1]; 3471 tresid = uiop->uio_resid; 3472 3473 /* 3474 * For NFSv4, first create the "." and ".." entries. 3475 */ 3476 if (NFSHASNFSV4(nmp)) { 3477 NFSGETATTR_ATTRBIT(&dattrbits); 3478 NFSZERO_ATTRBIT(&attrbits); 3479 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3480 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3481 NFSATTRBIT_MOUNTEDONFILEID)) { 3482 NFSSETBIT_ATTRBIT(&attrbits, 3483 NFSATTRBIT_MOUNTEDONFILEID); 3484 gotmnton = 1; 3485 } else { 3486 /* 3487 * Must fake it. Use the fileno, except when the 3488 * fsid is != to that of the directory. For that 3489 * case, generate a fake fileno that is not the same. 3490 */ 3491 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3492 gotmnton = 0; 3493 } 3494 3495 /* 3496 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3497 */ 3498 if (uiop->uio_offset == 0) { 3499 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp, cred); 3500 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3501 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3502 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3503 (void) nfsrv_putattrbit(nd, &attrbits); 3504 error = nfscl_request(nd, vp, p, cred, stuff); 3505 if (error) 3506 return (error); 3507 dotfileid = 0; /* Fake out the compiler. */ 3508 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3509 error = nfsm_loadattr(nd, &nfsva); 3510 if (error != 0) 3511 goto nfsmout; 3512 dctime = nfsva.na_ctime; 3513 dotfileid = nfsva.na_fileid; 3514 } 3515 if (nd->nd_repstat == 0) { 3516 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3517 len = fxdr_unsigned(int, *(tl + 4)); 3518 if (len > 0 && len <= NFSX_V4FHMAX) 3519 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3520 else 3521 error = EPERM; 3522 if (!error) { 3523 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3524 nfsva.na_mntonfileno = UINT64_MAX; 3525 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3526 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3527 NULL, NULL, NULL, p, cred); 3528 if (error) { 3529 dotdotfileid = dotfileid; 3530 } else if (gotmnton) { 3531 if (nfsva.na_mntonfileno != UINT64_MAX) 3532 dotdotfileid = nfsva.na_mntonfileno; 3533 else 3534 dotdotfileid = nfsva.na_fileid; 3535 } else if (nfsva.na_filesid[0] == 3536 dnp->n_vattr.na_filesid[0] && 3537 nfsva.na_filesid[1] == 3538 dnp->n_vattr.na_filesid[1]) { 3539 dotdotfileid = nfsva.na_fileid; 3540 } else { 3541 do { 3542 fakefileno--; 3543 } while (fakefileno == 3544 nfsva.na_fileid); 3545 dotdotfileid = fakefileno; 3546 } 3547 } 3548 } else if (nd->nd_repstat == NFSERR_NOENT) { 3549 /* 3550 * Lookupp returns NFSERR_NOENT when we are 3551 * at the root, so just use the current dir. 3552 */ 3553 nd->nd_repstat = 0; 3554 dotdotfileid = dotfileid; 3555 } else { 3556 error = nd->nd_repstat; 3557 } 3558 m_freem(nd->nd_mrep); 3559 if (error) 3560 return (error); 3561 nd->nd_mrep = NULL; 3562 dp = (struct dirent *)uiop->uio_iov->iov_base; 3563 dp->d_pad0 = dp->d_pad1 = 0; 3564 dp->d_off = 0; 3565 dp->d_type = DT_DIR; 3566 dp->d_fileno = dotfileid; 3567 dp->d_namlen = 1; 3568 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3569 dp->d_name[0] = '.'; 3570 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3571 /* 3572 * Just make these offset cookie 0. 3573 */ 3574 tl = (u_int32_t *)&dp->d_name[8]; 3575 *tl++ = 0; 3576 *tl = 0; 3577 blksiz += dp->d_reclen; 3578 uiop->uio_resid -= dp->d_reclen; 3579 uiop->uio_offset += dp->d_reclen; 3580 uiop->uio_iov->iov_base = 3581 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3582 uiop->uio_iov->iov_len -= dp->d_reclen; 3583 dp = (struct dirent *)uiop->uio_iov->iov_base; 3584 dp->d_pad0 = dp->d_pad1 = 0; 3585 dp->d_off = 0; 3586 dp->d_type = DT_DIR; 3587 dp->d_fileno = dotdotfileid; 3588 dp->d_namlen = 2; 3589 *((uint64_t *)dp->d_name) = 0; 3590 dp->d_name[0] = '.'; 3591 dp->d_name[1] = '.'; 3592 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3593 /* 3594 * Just make these offset cookie 0. 3595 */ 3596 tl = (u_int32_t *)&dp->d_name[8]; 3597 *tl++ = 0; 3598 *tl = 0; 3599 blksiz += dp->d_reclen; 3600 uiop->uio_resid -= dp->d_reclen; 3601 uiop->uio_offset += dp->d_reclen; 3602 uiop->uio_iov->iov_base = 3603 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3604 uiop->uio_iov->iov_len -= dp->d_reclen; 3605 } 3606 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3607 if (gotmnton) 3608 NFSSETBIT_ATTRBIT(&attrbits, 3609 NFSATTRBIT_MOUNTEDONFILEID); 3610 if (!NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3611 NFSATTRBIT_TIMECREATE)) 3612 NFSCLRBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMECREATE); 3613 } 3614 3615 /* 3616 * Loop around doing readdir rpc's of size nm_readdirsize. 3617 * The stopping criteria is EOF or buffer full. 3618 */ 3619 while (more_dirs && bigenough) { 3620 *attrflagp = 0; 3621 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp, cred); 3622 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3623 *tl++ = cookie.lval[0]; 3624 *tl++ = cookie.lval[1]; 3625 if (cookie.qval == 0) { 3626 *tl++ = 0; 3627 *tl++ = 0; 3628 } else { 3629 NFSLOCKNODE(dnp); 3630 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3631 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3632 NFSUNLOCKNODE(dnp); 3633 } 3634 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3635 *tl = txdr_unsigned(nmp->nm_readdirsize); 3636 if (nd->nd_flag & ND_NFSV4) { 3637 (void) nfsrv_putattrbit(nd, &attrbits); 3638 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3639 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3640 (void) nfsrv_putattrbit(nd, &dattrbits); 3641 } 3642 nanouptime(&ts); 3643 error = nfscl_request(nd, vp, p, cred, stuff); 3644 if (error) 3645 return (error); 3646 if (nd->nd_flag & ND_NFSV3) 3647 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3648 if (nd->nd_repstat || error) { 3649 if (!error) 3650 error = nd->nd_repstat; 3651 goto nfsmout; 3652 } 3653 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3654 dctime = nap->na_ctime; 3655 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3656 NFSLOCKNODE(dnp); 3657 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3658 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3659 NFSUNLOCKNODE(dnp); 3660 more_dirs = fxdr_unsigned(int, *tl); 3661 if (!more_dirs) 3662 tryformoredirs = 0; 3663 3664 /* loop through the dir entries, doctoring them to 4bsd form */ 3665 while (more_dirs && bigenough) { 3666 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3667 if (nd->nd_flag & ND_NFSV4) { 3668 ncookie.lval[0] = *tl++; 3669 ncookie.lval[1] = *tl++; 3670 } else { 3671 fileno = fxdr_hyper(tl); 3672 tl += 2; 3673 } 3674 len = fxdr_unsigned(int, *tl); 3675 if (len <= 0 || len > NFS_MAXNAMLEN) { 3676 error = EBADRPC; 3677 goto nfsmout; 3678 } 3679 tlen = roundup2(len, 8); 3680 if (tlen == len) 3681 tlen += 8; /* To ensure null termination. */ 3682 left = DIRBLKSIZ - blksiz; 3683 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3684 NFSBZERO(uiop->uio_iov->iov_base, left); 3685 dp->d_reclen += left; 3686 uiop->uio_iov->iov_base = 3687 (char *)uiop->uio_iov->iov_base + left; 3688 uiop->uio_iov->iov_len -= left; 3689 uiop->uio_resid -= left; 3690 uiop->uio_offset += left; 3691 blksiz = 0; 3692 } 3693 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3694 uiop->uio_resid) 3695 bigenough = 0; 3696 if (bigenough) { 3697 dp = (struct dirent *)uiop->uio_iov->iov_base; 3698 dp->d_pad0 = dp->d_pad1 = 0; 3699 dp->d_off = 0; 3700 dp->d_namlen = len; 3701 dp->d_reclen = _GENERIC_DIRLEN(len) + 3702 NFSX_HYPER; 3703 dp->d_type = DT_UNKNOWN; 3704 blksiz += dp->d_reclen; 3705 if (blksiz == DIRBLKSIZ) 3706 blksiz = 0; 3707 uiop->uio_resid -= DIRHDSIZ; 3708 uiop->uio_offset += DIRHDSIZ; 3709 uiop->uio_iov->iov_base = 3710 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3711 uiop->uio_iov->iov_len -= DIRHDSIZ; 3712 cnp->cn_nameptr = uiop->uio_iov->iov_base; 3713 cnp->cn_namelen = len; 3714 NFSCNHASHZERO(cnp); 3715 error = nfsm_mbufuio(nd, uiop, len); 3716 if (error) 3717 goto nfsmout; 3718 cp = uiop->uio_iov->iov_base; 3719 tlen -= len; 3720 NFSBZERO(cp, tlen); 3721 cp += tlen; /* points to cookie storage */ 3722 tl2 = (u_int32_t *)cp; 3723 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3724 cnp->cn_nameptr[1] == '.') 3725 isdotdot = 1; 3726 else 3727 isdotdot = 0; 3728 uiop->uio_iov->iov_base = 3729 (char *)uiop->uio_iov->iov_base + tlen + 3730 NFSX_HYPER; 3731 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3732 uiop->uio_resid -= tlen + NFSX_HYPER; 3733 uiop->uio_offset += (tlen + NFSX_HYPER); 3734 } else { 3735 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3736 if (error) 3737 goto nfsmout; 3738 } 3739 nfhp = NULL; 3740 if (nd->nd_flag & ND_NFSV3) { 3741 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3742 ncookie.lval[0] = *tl++; 3743 ncookie.lval[1] = *tl++; 3744 attrflag = fxdr_unsigned(int, *tl); 3745 if (attrflag) { 3746 error = nfsm_loadattr(nd, &nfsva); 3747 if (error) 3748 goto nfsmout; 3749 } 3750 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3751 if (*tl) { 3752 error = nfsm_getfh(nd, &nfhp); 3753 if (error) 3754 goto nfsmout; 3755 } 3756 if (!attrflag && nfhp != NULL) { 3757 free(nfhp, M_NFSFH); 3758 nfhp = NULL; 3759 } 3760 } else { 3761 rderr = 0; 3762 nfsva.na_mntonfileno = 0xffffffff; 3763 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3764 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3765 NULL, NULL, &rderr, p, cred); 3766 if (error) 3767 goto nfsmout; 3768 } 3769 3770 if (bigenough) { 3771 if (nd->nd_flag & ND_NFSV4) { 3772 if (rderr) { 3773 dp->d_fileno = 0; 3774 } else if (gotmnton) { 3775 if (nfsva.na_mntonfileno != 0xffffffff) 3776 dp->d_fileno = nfsva.na_mntonfileno; 3777 else 3778 dp->d_fileno = nfsva.na_fileid; 3779 } else if (nfsva.na_filesid[0] == 3780 dnp->n_vattr.na_filesid[0] && 3781 nfsva.na_filesid[1] == 3782 dnp->n_vattr.na_filesid[1]) { 3783 dp->d_fileno = nfsva.na_fileid; 3784 } else { 3785 do { 3786 fakefileno--; 3787 } while (fakefileno == 3788 nfsva.na_fileid); 3789 dp->d_fileno = fakefileno; 3790 } 3791 } else { 3792 dp->d_fileno = fileno; 3793 } 3794 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3795 ncookie.lval[0]; 3796 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3797 ncookie.lval[1]; 3798 3799 if (nfhp != NULL) { 3800 attr_ok = true; 3801 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3802 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3803 VREF(vp); 3804 newvp = vp; 3805 unlocknewvp = 0; 3806 free(nfhp, M_NFSFH); 3807 np = dnp; 3808 } else if (isdotdot != 0) { 3809 /* 3810 * Skip doing a nfscl_nget() call for "..". 3811 * There's a race between acquiring the nfs 3812 * node here and lookups that look for the 3813 * directory being read (in the parent). 3814 * It would try to get a lock on ".." here, 3815 * owning the lock on the directory being 3816 * read. Lookup will hold the lock on ".." 3817 * and try to acquire the lock on the 3818 * directory being read. 3819 * If the directory is unlocked/relocked, 3820 * then there is a LOR with the buflock 3821 * vp is relocked. 3822 */ 3823 free(nfhp, M_NFSFH); 3824 } else { 3825 error = nfscl_nget(vp->v_mount, vp, 3826 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3827 if (!error) { 3828 newvp = NFSTOV(np); 3829 unlocknewvp = 1; 3830 /* 3831 * If n_localmodtime >= time before RPC, 3832 * then a file modification operation, 3833 * such as VOP_SETATTR() of size, has 3834 * occurred while the Lookup RPC and 3835 * acquisition of the vnode happened. As 3836 * such, the attributes might be stale, 3837 * with possibly an incorrect size. 3838 */ 3839 NFSLOCKNODE(np); 3840 if (timespecisset( 3841 &np->n_localmodtime) && 3842 timespeccmp(&np->n_localmodtime, 3843 &ts, >=)) { 3844 NFSCL_DEBUG(4, "nfsrpc_readdirplus:" 3845 " localmod stale attributes\n"); 3846 attr_ok = false; 3847 } 3848 NFSUNLOCKNODE(np); 3849 } 3850 } 3851 nfhp = NULL; 3852 if (newvp != NULLVP) { 3853 if (attr_ok) 3854 error = nfscl_loadattrcache(&newvp, 3855 &nfsva, NULL, NULL, 0, 0); 3856 if (error) { 3857 if (unlocknewvp) 3858 vput(newvp); 3859 else 3860 vrele(newvp); 3861 goto nfsmout; 3862 } 3863 dp->d_type = 3864 vtonfs_dtype(np->n_vattr.na_type); 3865 ndp->ni_vp = newvp; 3866 NFSCNHASH(cnp, HASHINIT); 3867 if (cnp->cn_namelen <= NCHNAMLEN && 3868 ndp->ni_dvp != ndp->ni_vp && 3869 (newvp->v_type != VDIR || 3870 dctime.tv_sec != 0)) { 3871 cache_enter_time_flags(ndp->ni_dvp, 3872 ndp->ni_vp, cnp, 3873 &nfsva.na_ctime, 3874 newvp->v_type != VDIR ? NULL : 3875 &dctime, VFS_CACHE_DROPOLD); 3876 } 3877 if (unlocknewvp) 3878 vput(newvp); 3879 else 3880 vrele(newvp); 3881 newvp = NULLVP; 3882 } 3883 } 3884 } else if (nfhp != NULL) { 3885 free(nfhp, M_NFSFH); 3886 } 3887 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3888 more_dirs = fxdr_unsigned(int, *tl); 3889 } 3890 /* 3891 * If at end of rpc data, get the eof boolean 3892 */ 3893 if (!more_dirs) { 3894 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3895 eof = fxdr_unsigned(int, *tl); 3896 if (tryformoredirs) 3897 more_dirs = !eof; 3898 if (nd->nd_flag & ND_NFSV4) { 3899 error = nfscl_postop_attr(nd, nap, attrflagp, 3900 stuff); 3901 if (error) 3902 goto nfsmout; 3903 } 3904 } 3905 m_freem(nd->nd_mrep); 3906 nd->nd_mrep = NULL; 3907 } 3908 /* 3909 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3910 * by increasing d_reclen for the last record. 3911 */ 3912 if (blksiz > 0) { 3913 left = DIRBLKSIZ - blksiz; 3914 NFSBZERO(uiop->uio_iov->iov_base, left); 3915 dp->d_reclen += left; 3916 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3917 left; 3918 uiop->uio_iov->iov_len -= left; 3919 uiop->uio_resid -= left; 3920 uiop->uio_offset += left; 3921 } 3922 3923 /* 3924 * If returning no data, assume end of file. 3925 * If not bigenough, return not end of file, since you aren't 3926 * returning all the data 3927 * Otherwise, return the eof flag from the server. 3928 */ 3929 if (eofp != NULL) { 3930 if (tresid == uiop->uio_resid) 3931 *eofp = 1; 3932 else if (!bigenough) 3933 *eofp = 0; 3934 else 3935 *eofp = eof; 3936 } 3937 3938 /* 3939 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3940 */ 3941 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3942 dp = (struct dirent *)uiop->uio_iov->iov_base; 3943 NFSBZERO(dp, DIRBLKSIZ); 3944 dp->d_type = DT_UNKNOWN; 3945 tl = (u_int32_t *)&dp->d_name[4]; 3946 *tl++ = cookie.lval[0]; 3947 *tl = cookie.lval[1]; 3948 dp->d_reclen = DIRBLKSIZ; 3949 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3950 DIRBLKSIZ; 3951 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3952 uiop->uio_resid -= DIRBLKSIZ; 3953 uiop->uio_offset += DIRBLKSIZ; 3954 } 3955 3956 nfsmout: 3957 if (nd->nd_mrep != NULL) 3958 m_freem(nd->nd_mrep); 3959 return (error); 3960 } 3961 #endif /* !APPLE */ 3962 3963 /* 3964 * Nfs commit rpc 3965 */ 3966 int 3967 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3968 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3969 { 3970 u_int32_t *tl; 3971 struct nfsrv_descript nfsd, *nd = &nfsd; 3972 nfsattrbit_t attrbits; 3973 int error; 3974 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3975 3976 *attrflagp = 0; 3977 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp, cred); 3978 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3979 txdr_hyper(offset, tl); 3980 tl += 2; 3981 *tl = txdr_unsigned(cnt); 3982 if (nd->nd_flag & ND_NFSV4) { 3983 /* 3984 * And do a Getattr op. 3985 */ 3986 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3987 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3988 NFSGETATTR_ATTRBIT(&attrbits); 3989 (void) nfsrv_putattrbit(nd, &attrbits); 3990 } 3991 error = nfscl_request(nd, vp, p, cred, stuff); 3992 if (error) 3993 return (error); 3994 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, NULL); 3995 if (!error && !nd->nd_repstat) { 3996 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3997 NFSLOCKMNT(nmp); 3998 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3999 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 4000 nd->nd_repstat = NFSERR_STALEWRITEVERF; 4001 } 4002 NFSUNLOCKMNT(nmp); 4003 if (nd->nd_flag & ND_NFSV4) 4004 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4005 } 4006 nfsmout: 4007 if (!error && nd->nd_repstat) 4008 error = nd->nd_repstat; 4009 m_freem(nd->nd_mrep); 4010 return (error); 4011 } 4012 4013 /* 4014 * NFS byte range lock rpc. 4015 * (Mostly just calls one of the three lower level RPC routines.) 4016 */ 4017 int 4018 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 4019 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4020 { 4021 struct nfscllockowner *lp; 4022 struct nfsclclient *clp; 4023 struct nfsfh *nfhp; 4024 struct nfsrv_descript nfsd, *nd = &nfsd; 4025 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4026 u_int64_t off, len; 4027 off_t start, end; 4028 u_int32_t clidrev = 0; 4029 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 4030 int callcnt, dorpc; 4031 4032 /* 4033 * Convert the flock structure into a start and end and do POSIX 4034 * bounds checking. 4035 */ 4036 switch (fl->l_whence) { 4037 case SEEK_SET: 4038 case SEEK_CUR: 4039 /* 4040 * Caller is responsible for adding any necessary offset 4041 * when SEEK_CUR is used. 4042 */ 4043 start = fl->l_start; 4044 off = fl->l_start; 4045 break; 4046 case SEEK_END: 4047 start = size + fl->l_start; 4048 off = size + fl->l_start; 4049 break; 4050 default: 4051 return (EINVAL); 4052 } 4053 if (start < 0) 4054 return (EINVAL); 4055 if (fl->l_len != 0) { 4056 end = start + fl->l_len - 1; 4057 if (end < start) 4058 return (EINVAL); 4059 } 4060 4061 len = fl->l_len; 4062 if (len == 0) 4063 len = NFS64BITSSET; 4064 retrycnt = 0; 4065 do { 4066 nd->nd_repstat = 0; 4067 if (op == F_GETLK) { 4068 error = nfscl_getcl(vp->v_mount, cred, p, false, true, &clp); 4069 if (error) 4070 return (error); 4071 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 4072 if (!error) { 4073 clidrev = clp->nfsc_clientidrev; 4074 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 4075 p, id, flags); 4076 } else if (error == -1) { 4077 error = 0; 4078 } 4079 nfscl_clientrelease(clp); 4080 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 4081 /* 4082 * We must loop around for all lockowner cases. 4083 */ 4084 callcnt = 0; 4085 error = nfscl_getcl(vp->v_mount, cred, p, false, true, &clp); 4086 if (error) 4087 return (error); 4088 do { 4089 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 4090 clp, id, flags, &lp, &dorpc); 4091 /* 4092 * If it returns a NULL lp, we're done. 4093 */ 4094 if (lp == NULL) { 4095 if (callcnt == 0) 4096 nfscl_clientrelease(clp); 4097 else 4098 nfscl_releasealllocks(clp, vp, p, id, flags); 4099 return (error); 4100 } 4101 if (nmp->nm_clp != NULL) 4102 clidrev = nmp->nm_clp->nfsc_clientidrev; 4103 else 4104 clidrev = 0; 4105 /* 4106 * If the server doesn't support Posix lock semantics, 4107 * only allow locks on the entire file, since it won't 4108 * handle overlapping byte ranges. 4109 * There might still be a problem when a lock 4110 * upgrade/downgrade (read<->write) occurs, since the 4111 * server "might" expect an unlock first? 4112 */ 4113 if (dorpc && (lp->nfsl_open->nfso_posixlock || 4114 (off == 0 && len == NFS64BITSSET))) { 4115 /* 4116 * Since the lock records will go away, we must 4117 * wait for grace and delay here. 4118 */ 4119 do { 4120 error = nfsrpc_locku(nd, nmp, lp, off, len, 4121 NFSV4LOCKT_READ, cred, p, 0); 4122 if ((nd->nd_repstat == NFSERR_GRACE || 4123 nd->nd_repstat == NFSERR_DELAY) && 4124 error == 0) 4125 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 4126 "nfs_advlock"); 4127 } while ((nd->nd_repstat == NFSERR_GRACE || 4128 nd->nd_repstat == NFSERR_DELAY) && error == 0); 4129 } 4130 callcnt++; 4131 } while (error == 0 && nd->nd_repstat == 0); 4132 nfscl_releasealllocks(clp, vp, p, id, flags); 4133 } else if (op == F_SETLK) { 4134 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 4135 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 4136 if (error || donelocally) { 4137 return (error); 4138 } 4139 if (nmp->nm_clp != NULL) 4140 clidrev = nmp->nm_clp->nfsc_clientidrev; 4141 else 4142 clidrev = 0; 4143 nfhp = VTONFS(vp)->n_fhp; 4144 if (!lp->nfsl_open->nfso_posixlock && 4145 (off != 0 || len != NFS64BITSSET)) { 4146 error = EINVAL; 4147 } else { 4148 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 4149 nfhp->nfh_len, lp, newone, reclaim, off, 4150 len, fl->l_type, cred, p, 0); 4151 } 4152 if (!error) 4153 error = nd->nd_repstat; 4154 nfscl_lockrelease(lp, error, newone); 4155 } else { 4156 error = EINVAL; 4157 } 4158 if (!error) 4159 error = nd->nd_repstat; 4160 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 4161 error == NFSERR_STALEDONTRECOVER || 4162 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4163 error == NFSERR_BADSESSION) { 4164 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 4165 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 4166 && clidrev != 0) { 4167 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 4168 retrycnt++; 4169 } 4170 } while (error == NFSERR_GRACE || 4171 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4172 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 4173 error == NFSERR_BADSESSION || 4174 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 4175 expireret == 0 && clidrev != 0 && retrycnt < 4)); 4176 if (error && retrycnt >= 4) 4177 error = EIO; 4178 return (error); 4179 } 4180 4181 /* 4182 * The lower level routine for the LockT case. 4183 */ 4184 int 4185 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 4186 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 4187 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4188 { 4189 u_int32_t *tl; 4190 int error, type, size; 4191 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4192 struct nfsnode *np; 4193 struct nfsmount *nmp; 4194 struct nfsclsession *tsep; 4195 4196 nmp = VFSTONFS(vp->v_mount); 4197 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp, cred); 4198 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4199 if (fl->l_type == F_RDLCK) 4200 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4201 else 4202 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4203 txdr_hyper(off, tl); 4204 tl += 2; 4205 txdr_hyper(len, tl); 4206 tl += 2; 4207 tsep = nfsmnt_mdssession(nmp); 4208 *tl++ = tsep->nfsess_clientid.lval[0]; 4209 *tl = tsep->nfsess_clientid.lval[1]; 4210 nfscl_filllockowner(id, own, flags); 4211 np = VTONFS(vp); 4212 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4213 np->n_fhp->nfh_len); 4214 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4215 error = nfscl_request(nd, vp, p, cred, NULL); 4216 if (error) 4217 return (error); 4218 if (nd->nd_repstat == 0) { 4219 fl->l_type = F_UNLCK; 4220 } else if (nd->nd_repstat == NFSERR_DENIED) { 4221 nd->nd_repstat = 0; 4222 fl->l_whence = SEEK_SET; 4223 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4224 fl->l_start = fxdr_hyper(tl); 4225 tl += 2; 4226 len = fxdr_hyper(tl); 4227 tl += 2; 4228 if (len == NFS64BITSSET) 4229 fl->l_len = 0; 4230 else 4231 fl->l_len = len; 4232 type = fxdr_unsigned(int, *tl++); 4233 if (type == NFSV4LOCKT_WRITE) 4234 fl->l_type = F_WRLCK; 4235 else 4236 fl->l_type = F_RDLCK; 4237 /* 4238 * XXX For now, I have no idea what to do with the 4239 * conflicting lock_owner, so I'll just set the pid == 0 4240 * and skip over the lock_owner. 4241 */ 4242 fl->l_pid = (pid_t)0; 4243 tl += 2; 4244 size = fxdr_unsigned(int, *tl); 4245 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4246 error = EBADRPC; 4247 if (!error) 4248 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4249 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4250 nfscl_initiate_recovery(clp); 4251 nfsmout: 4252 m_freem(nd->nd_mrep); 4253 return (error); 4254 } 4255 4256 /* 4257 * Lower level function that performs the LockU RPC. 4258 */ 4259 static int 4260 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4261 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4262 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4263 { 4264 u_int32_t *tl; 4265 int error; 4266 4267 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4268 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0, cred); 4269 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4270 *tl++ = txdr_unsigned(type); 4271 *tl = txdr_unsigned(lp->nfsl_seqid); 4272 if (nfstest_outofseq && 4273 (arc4random() % nfstest_outofseq) == 0) 4274 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4275 tl++; 4276 if (NFSHASNFSV4N(nmp)) 4277 *tl++ = 0; 4278 else 4279 *tl++ = lp->nfsl_stateid.seqid; 4280 *tl++ = lp->nfsl_stateid.other[0]; 4281 *tl++ = lp->nfsl_stateid.other[1]; 4282 *tl++ = lp->nfsl_stateid.other[2]; 4283 txdr_hyper(off, tl); 4284 tl += 2; 4285 txdr_hyper(len, tl); 4286 if (syscred) 4287 nd->nd_flag |= ND_USEGSSNAME; 4288 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4289 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4290 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4291 if (error) 4292 return (error); 4293 if (nd->nd_repstat == 0) { 4294 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4295 lp->nfsl_stateid.seqid = *tl++; 4296 lp->nfsl_stateid.other[0] = *tl++; 4297 lp->nfsl_stateid.other[1] = *tl++; 4298 lp->nfsl_stateid.other[2] = *tl; 4299 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4300 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4301 nfsmout: 4302 m_freem(nd->nd_mrep); 4303 return (error); 4304 } 4305 4306 /* 4307 * The actual Lock RPC. 4308 */ 4309 int 4310 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4311 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4312 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4313 NFSPROC_T *p, int syscred) 4314 { 4315 u_int32_t *tl; 4316 int error, size; 4317 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4318 struct nfsclsession *tsep; 4319 4320 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0, 4321 cred); 4322 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4323 if (type == F_RDLCK) 4324 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4325 else 4326 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4327 *tl++ = txdr_unsigned(reclaim); 4328 txdr_hyper(off, tl); 4329 tl += 2; 4330 txdr_hyper(len, tl); 4331 tl += 2; 4332 if (newone) { 4333 *tl = newnfs_true; 4334 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4335 2 * NFSX_UNSIGNED + NFSX_HYPER); 4336 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4337 if (NFSHASNFSV4N(nmp)) 4338 *tl++ = 0; 4339 else 4340 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4341 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4342 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4343 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4344 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4345 tsep = nfsmnt_mdssession(nmp); 4346 *tl++ = tsep->nfsess_clientid.lval[0]; 4347 *tl = tsep->nfsess_clientid.lval[1]; 4348 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4349 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4350 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4351 } else { 4352 *tl = newnfs_false; 4353 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4354 if (NFSHASNFSV4N(nmp)) 4355 *tl++ = 0; 4356 else 4357 *tl++ = lp->nfsl_stateid.seqid; 4358 *tl++ = lp->nfsl_stateid.other[0]; 4359 *tl++ = lp->nfsl_stateid.other[1]; 4360 *tl++ = lp->nfsl_stateid.other[2]; 4361 *tl = txdr_unsigned(lp->nfsl_seqid); 4362 if (nfstest_outofseq && 4363 (arc4random() % nfstest_outofseq) == 0) 4364 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4365 } 4366 if (syscred) 4367 nd->nd_flag |= ND_USEGSSNAME; 4368 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4369 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4370 if (error) 4371 return (error); 4372 if (newone) 4373 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4374 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4375 if (nd->nd_repstat == 0) { 4376 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4377 lp->nfsl_stateid.seqid = *tl++; 4378 lp->nfsl_stateid.other[0] = *tl++; 4379 lp->nfsl_stateid.other[1] = *tl++; 4380 lp->nfsl_stateid.other[2] = *tl; 4381 } else if (nd->nd_repstat == NFSERR_DENIED) { 4382 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4383 size = fxdr_unsigned(int, *(tl + 7)); 4384 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4385 error = EBADRPC; 4386 if (!error) 4387 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4388 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4389 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4390 nfsmout: 4391 m_freem(nd->nd_mrep); 4392 return (error); 4393 } 4394 4395 /* 4396 * nfs statfs rpc 4397 * (always called with the vp for the mount point) 4398 */ 4399 int 4400 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4401 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4402 void *stuff) 4403 { 4404 u_int32_t *tl = NULL; 4405 struct nfsrv_descript nfsd, *nd = &nfsd; 4406 struct nfsmount *nmp; 4407 nfsattrbit_t attrbits; 4408 int error; 4409 4410 *attrflagp = 0; 4411 nmp = VFSTONFS(vp->v_mount); 4412 if (NFSHASNFSV4(nmp)) { 4413 /* 4414 * For V4, you actually do a getattr. 4415 */ 4416 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred); 4417 NFSSTATFS_GETATTRBIT(&attrbits); 4418 (void) nfsrv_putattrbit(nd, &attrbits); 4419 nd->nd_flag |= ND_USEGSSNAME; 4420 error = nfscl_request(nd, vp, p, cred, stuff); 4421 if (error) 4422 return (error); 4423 if (nd->nd_repstat == 0) { 4424 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4425 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4426 cred); 4427 if (!error) { 4428 nmp->nm_fsid[0] = nap->na_filesid[0]; 4429 nmp->nm_fsid[1] = nap->na_filesid[1]; 4430 NFSSETHASSETFSID(nmp); 4431 *attrflagp = 1; 4432 } 4433 } else { 4434 error = nd->nd_repstat; 4435 } 4436 if (error) 4437 goto nfsmout; 4438 } else { 4439 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp, NULL); 4440 error = nfscl_request(nd, vp, p, cred, stuff); 4441 if (error) 4442 return (error); 4443 if (nd->nd_flag & ND_NFSV3) { 4444 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4445 if (error) 4446 goto nfsmout; 4447 } 4448 if (nd->nd_repstat) { 4449 error = nd->nd_repstat; 4450 goto nfsmout; 4451 } 4452 NFSM_DISSECT(tl, u_int32_t *, 4453 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4454 } 4455 if (NFSHASNFSV3(nmp)) { 4456 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4457 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4458 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4459 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4460 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4461 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4462 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4463 } else if (NFSHASNFSV4(nmp) == 0) { 4464 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4465 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4466 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4467 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4468 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4469 } 4470 nfsmout: 4471 m_freem(nd->nd_mrep); 4472 return (error); 4473 } 4474 4475 /* 4476 * nfs pathconf rpc 4477 */ 4478 int 4479 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4480 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4481 void *stuff) 4482 { 4483 struct nfsrv_descript nfsd, *nd = &nfsd; 4484 struct nfsmount *nmp; 4485 u_int32_t *tl; 4486 nfsattrbit_t attrbits; 4487 int error; 4488 4489 *attrflagp = 0; 4490 nmp = VFSTONFS(vp->v_mount); 4491 if (NFSHASNFSV4(nmp)) { 4492 /* 4493 * For V4, you actually do a getattr. 4494 */ 4495 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp, cred); 4496 NFSPATHCONF_GETATTRBIT(&attrbits); 4497 (void) nfsrv_putattrbit(nd, &attrbits); 4498 nd->nd_flag |= ND_USEGSSNAME; 4499 error = nfscl_request(nd, vp, p, cred, stuff); 4500 if (error) 4501 return (error); 4502 if (nd->nd_repstat == 0) { 4503 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4504 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4505 cred); 4506 if (!error) 4507 *attrflagp = 1; 4508 } else { 4509 error = nd->nd_repstat; 4510 } 4511 } else { 4512 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp, NULL); 4513 error = nfscl_request(nd, vp, p, cred, stuff); 4514 if (error) 4515 return (error); 4516 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4517 if (nd->nd_repstat && !error) 4518 error = nd->nd_repstat; 4519 if (!error) { 4520 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4521 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4522 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4523 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4524 pc->pc_chownrestricted = 4525 fxdr_unsigned(u_int32_t, *tl++); 4526 pc->pc_caseinsensitive = 4527 fxdr_unsigned(u_int32_t, *tl++); 4528 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4529 } 4530 } 4531 nfsmout: 4532 m_freem(nd->nd_mrep); 4533 return (error); 4534 } 4535 4536 /* 4537 * nfs version 3 fsinfo rpc call 4538 */ 4539 int 4540 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4541 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4542 { 4543 u_int32_t *tl; 4544 struct nfsrv_descript nfsd, *nd = &nfsd; 4545 int error; 4546 4547 *attrflagp = 0; 4548 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp, NULL); 4549 error = nfscl_request(nd, vp, p, cred, stuff); 4550 if (error) 4551 return (error); 4552 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4553 if (nd->nd_repstat && !error) 4554 error = nd->nd_repstat; 4555 if (!error) { 4556 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4557 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4558 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4559 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4560 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4561 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4562 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4563 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4564 fsp->fs_maxfilesize = fxdr_hyper(tl); 4565 tl += 2; 4566 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4567 tl += 2; 4568 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4569 } 4570 nfsmout: 4571 m_freem(nd->nd_mrep); 4572 return (error); 4573 } 4574 4575 /* 4576 * This function performs the Renew RPC. 4577 */ 4578 int 4579 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4580 NFSPROC_T *p) 4581 { 4582 u_int32_t *tl; 4583 struct nfsrv_descript nfsd; 4584 struct nfsrv_descript *nd = &nfsd; 4585 struct nfsmount *nmp; 4586 int error; 4587 struct nfssockreq *nrp; 4588 struct nfsclsession *tsep; 4589 4590 nmp = clp->nfsc_nmp; 4591 if (nmp == NULL) 4592 return (0); 4593 if (dsp == NULL) 4594 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4595 0, cred); 4596 else 4597 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4598 &dsp->nfsclds_sess, 0, 0, NULL); 4599 if (!NFSHASNFSV4N(nmp)) { 4600 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4601 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4602 tsep = nfsmnt_mdssession(nmp); 4603 *tl++ = tsep->nfsess_clientid.lval[0]; 4604 *tl = tsep->nfsess_clientid.lval[1]; 4605 } 4606 nrp = NULL; 4607 if (dsp != NULL) 4608 nrp = dsp->nfsclds_sockp; 4609 if (nrp == NULL) 4610 /* If NULL, use the MDS socket. */ 4611 nrp = &nmp->nm_sockreq; 4612 nd->nd_flag |= ND_USEGSSNAME; 4613 if (dsp == NULL) 4614 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4615 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4616 else { 4617 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4618 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4619 if (error == ENXIO) 4620 nfscl_cancelreqs(dsp); 4621 } 4622 if (error) 4623 return (error); 4624 error = nd->nd_repstat; 4625 m_freem(nd->nd_mrep); 4626 return (error); 4627 } 4628 4629 /* 4630 * This function performs the Releaselockowner RPC. 4631 */ 4632 int 4633 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4634 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4635 { 4636 struct nfsrv_descript nfsd, *nd = &nfsd; 4637 u_int32_t *tl; 4638 int error; 4639 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4640 struct nfsclsession *tsep; 4641 4642 if (NFSHASNFSV4N(nmp)) { 4643 /* For NFSv4.1, do a FreeStateID. */ 4644 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4645 NULL, 0, 0, cred); 4646 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4647 } else { 4648 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4649 NULL, 0, 0, NULL); 4650 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4651 tsep = nfsmnt_mdssession(nmp); 4652 *tl++ = tsep->nfsess_clientid.lval[0]; 4653 *tl = tsep->nfsess_clientid.lval[1]; 4654 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4655 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4656 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4657 } 4658 nd->nd_flag |= ND_USEGSSNAME; 4659 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4660 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4661 if (error) 4662 return (error); 4663 error = nd->nd_repstat; 4664 m_freem(nd->nd_mrep); 4665 return (error); 4666 } 4667 4668 /* 4669 * This function performs the Compound to get the mount pt FH. 4670 */ 4671 int 4672 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4673 NFSPROC_T *p) 4674 { 4675 u_int32_t *tl; 4676 struct nfsrv_descript nfsd; 4677 struct nfsrv_descript *nd = &nfsd; 4678 u_char *cp, *cp2; 4679 int error, cnt, len, setnil; 4680 u_int32_t *opcntp; 4681 4682 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4683 0, NULL); 4684 cp = dirpath; 4685 cnt = 0; 4686 do { 4687 setnil = 0; 4688 while (*cp == '/') 4689 cp++; 4690 cp2 = cp; 4691 while (*cp2 != '\0' && *cp2 != '/') 4692 cp2++; 4693 if (*cp2 == '/') { 4694 setnil = 1; 4695 *cp2 = '\0'; 4696 } 4697 if (cp2 != cp) { 4698 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4699 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4700 nfsm_strtom(nd, cp, strlen(cp)); 4701 cnt++; 4702 } 4703 if (setnil) 4704 *cp2++ = '/'; 4705 cp = cp2; 4706 } while (*cp != '\0'); 4707 if (NFSHASNFSV4N(nmp)) 4708 /* Has a Sequence Op done by nfscl_reqstart(). */ 4709 *opcntp = txdr_unsigned(3 + cnt); 4710 else 4711 *opcntp = txdr_unsigned(2 + cnt); 4712 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4713 *tl = txdr_unsigned(NFSV4OP_GETFH); 4714 nd->nd_flag |= ND_USEGSSNAME; 4715 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4716 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4717 if (error) 4718 return (error); 4719 if (nd->nd_repstat == 0) { 4720 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4721 tl += (2 + 2 * cnt); 4722 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4723 len > NFSX_FHMAX) { 4724 nd->nd_repstat = NFSERR_BADXDR; 4725 } else { 4726 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4727 if (nd->nd_repstat == 0) 4728 nmp->nm_fhsize = len; 4729 } 4730 } 4731 error = nd->nd_repstat; 4732 nfsmout: 4733 m_freem(nd->nd_mrep); 4734 return (error); 4735 } 4736 4737 /* 4738 * This function performs the Delegreturn RPC. 4739 */ 4740 int 4741 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4742 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4743 { 4744 u_int32_t *tl; 4745 struct nfsrv_descript nfsd; 4746 struct nfsrv_descript *nd = &nfsd; 4747 int error; 4748 4749 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4750 dp->nfsdl_fhlen, NULL, NULL, 0, 0, cred); 4751 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4752 if (NFSHASNFSV4N(nmp)) 4753 *tl++ = 0; 4754 else 4755 *tl++ = dp->nfsdl_stateid.seqid; 4756 *tl++ = dp->nfsdl_stateid.other[0]; 4757 *tl++ = dp->nfsdl_stateid.other[1]; 4758 *tl = dp->nfsdl_stateid.other[2]; 4759 if (syscred) 4760 nd->nd_flag |= ND_USEGSSNAME; 4761 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4762 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4763 if (error) 4764 return (error); 4765 error = nd->nd_repstat; 4766 m_freem(nd->nd_mrep); 4767 return (error); 4768 } 4769 4770 /* 4771 * nfs getacl call. 4772 */ 4773 int 4774 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4775 struct acl *aclp, void *stuff) 4776 { 4777 struct nfsrv_descript nfsd, *nd = &nfsd; 4778 int error; 4779 nfsattrbit_t attrbits; 4780 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4781 4782 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4783 return (EOPNOTSUPP); 4784 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp, cred); 4785 NFSZERO_ATTRBIT(&attrbits); 4786 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4787 (void) nfsrv_putattrbit(nd, &attrbits); 4788 error = nfscl_request(nd, vp, p, cred, stuff); 4789 if (error) 4790 return (error); 4791 if (!nd->nd_repstat) 4792 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4793 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4794 else 4795 error = nd->nd_repstat; 4796 m_freem(nd->nd_mrep); 4797 return (error); 4798 } 4799 4800 /* 4801 * nfs setacl call. 4802 */ 4803 int 4804 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4805 struct acl *aclp, void *stuff) 4806 { 4807 int error; 4808 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4809 4810 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4811 return (EOPNOTSUPP); 4812 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4813 return (error); 4814 } 4815 4816 /* 4817 * nfs setacl call. 4818 */ 4819 static int 4820 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4821 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4822 { 4823 struct nfsrv_descript nfsd, *nd = &nfsd; 4824 int error; 4825 nfsattrbit_t attrbits; 4826 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4827 4828 if (!NFSHASNFSV4(nmp)) 4829 return (EOPNOTSUPP); 4830 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp, cred); 4831 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4832 NFSZERO_ATTRBIT(&attrbits); 4833 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4834 (void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0, 4835 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL); 4836 error = nfscl_request(nd, vp, p, cred, stuff); 4837 if (error) 4838 return (error); 4839 /* Don't care about the pre/postop attributes */ 4840 m_freem(nd->nd_mrep); 4841 return (nd->nd_repstat); 4842 } 4843 4844 /* 4845 * Do the NFSv4.1 Exchange ID. 4846 */ 4847 int 4848 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4849 struct nfssockreq *nrp, int minorvers, uint32_t exchflags, 4850 struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p) 4851 { 4852 uint32_t *tl, v41flags; 4853 struct nfsrv_descript nfsd; 4854 struct nfsrv_descript *nd = &nfsd; 4855 struct nfsclds *dsp; 4856 struct timespec verstime; 4857 int error, len; 4858 4859 *dspp = NULL; 4860 if (minorvers == 0) 4861 minorvers = nmp->nm_minorvers; 4862 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 4863 NFS_VER4, minorvers, NULL); 4864 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4865 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4866 *tl = txdr_unsigned(clp->nfsc_rev); 4867 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4868 4869 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4870 *tl++ = txdr_unsigned(exchflags); 4871 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4872 4873 /* Set the implementation id4 */ 4874 *tl = txdr_unsigned(1); 4875 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4876 (void) nfsm_strtom(nd, version, strlen(version)); 4877 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4878 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4879 verstime.tv_nsec = 0; 4880 txdr_nfsv4time(&verstime, tl); 4881 nd->nd_flag |= ND_USEGSSNAME; 4882 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4883 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4884 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4885 (int)nd->nd_repstat); 4886 if (error != 0) 4887 return (error); 4888 if (nd->nd_repstat == 0) { 4889 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4890 len = fxdr_unsigned(int, *(tl + 7)); 4891 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4892 error = NFSERR_BADXDR; 4893 goto nfsmout; 4894 } 4895 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4896 M_WAITOK | M_ZERO); 4897 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4898 dsp->nfsclds_servownlen = len; 4899 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4900 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4901 dsp->nfsclds_sess.nfsess_sequenceid = 4902 fxdr_unsigned(uint32_t, *tl++); 4903 v41flags = fxdr_unsigned(uint32_t, *tl); 4904 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4905 NFSHASPNFSOPT(nmp)) { 4906 NFSCL_DEBUG(1, "set PNFS\n"); 4907 NFSLOCKMNT(nmp); 4908 nmp->nm_state |= NFSSTA_PNFS; 4909 NFSUNLOCKMNT(nmp); 4910 dsp->nfsclds_flags |= NFSCLDS_MDS; 4911 } 4912 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4913 dsp->nfsclds_flags |= NFSCLDS_DS; 4914 if (minorvers == NFSV42_MINORVERSION) 4915 dsp->nfsclds_flags |= NFSCLDS_MINORV2; 4916 if (len > 0) 4917 nd->nd_repstat = nfsrv_mtostr(nd, 4918 dsp->nfsclds_serverown, len); 4919 if (nd->nd_repstat == 0) { 4920 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4921 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4922 NULL, MTX_DEF); 4923 nfscl_initsessionslots(&dsp->nfsclds_sess); 4924 *dspp = dsp; 4925 } else 4926 free(dsp, M_NFSCLDS); 4927 } 4928 error = nd->nd_repstat; 4929 nfsmout: 4930 m_freem(nd->nd_mrep); 4931 return (error); 4932 } 4933 4934 /* 4935 * Do the NFSv4.1 Create Session. 4936 */ 4937 int 4938 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4939 struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds, 4940 struct ucred *cred, NFSPROC_T *p) 4941 { 4942 uint32_t crflags, maxval, *tl; 4943 struct nfsrv_descript nfsd; 4944 struct nfsrv_descript *nd = &nfsd; 4945 int error, irdcnt, minorvers; 4946 4947 /* Make sure nm_rsize, nm_wsize is set. */ 4948 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4949 nmp->nm_rsize = NFS_MAXBSIZE; 4950 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4951 nmp->nm_wsize = NFS_MAXBSIZE; 4952 if (dsp == NULL) 4953 minorvers = nmp->nm_minorvers; 4954 else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0) 4955 minorvers = NFSV42_MINORVERSION; 4956 else 4957 minorvers = NFSV41_MINORVERSION; 4958 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 4959 NFS_VER4, minorvers, NULL); 4960 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4961 *tl++ = sep->nfsess_clientid.lval[0]; 4962 *tl++ = sep->nfsess_clientid.lval[1]; 4963 *tl++ = txdr_unsigned(sequenceid); 4964 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4965 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4966 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4967 *tl = txdr_unsigned(crflags); 4968 4969 /* Fill in fore channel attributes. */ 4970 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4971 *tl++ = 0; /* Header pad size */ 4972 if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >= 4973 nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) { 4974 /* 4975 * NFSv4.2 Extended Attribute operations may want to do 4976 * requests/replies that are larger than nm_rsize/nm_wsize. 4977 */ 4978 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4979 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4980 } else { 4981 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR); 4982 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR); 4983 } 4984 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4985 *tl++ = txdr_unsigned(20); /* Max operations */ 4986 *tl++ = txdr_unsigned(64); /* Max slots */ 4987 *tl = 0; /* No rdma ird */ 4988 4989 /* Fill in back channel attributes. */ 4990 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4991 *tl++ = 0; /* Header pad size */ 4992 *tl++ = txdr_unsigned(10000); /* Max request size */ 4993 *tl++ = txdr_unsigned(10000); /* Max response size */ 4994 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4995 *tl++ = txdr_unsigned(4); /* Max operations */ 4996 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4997 *tl = 0; /* No rdma ird */ 4998 4999 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 5000 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 5001 5002 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 5003 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 5004 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 5005 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 5006 *tl++ = 0; /* Null machine name */ 5007 *tl++ = 0; /* Uid == 0 */ 5008 *tl++ = 0; /* Gid == 0 */ 5009 *tl = 0; /* No additional gids */ 5010 nd->nd_flag |= ND_USEGSSNAME; 5011 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 5012 NFS_VER4, NULL, 1, NULL, NULL); 5013 if (error != 0) 5014 return (error); 5015 if (nd->nd_repstat == 0) { 5016 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 5017 2 * NFSX_UNSIGNED); 5018 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 5019 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 5020 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 5021 crflags = fxdr_unsigned(uint32_t, *tl); 5022 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 5023 NFSLOCKMNT(nmp); 5024 nmp->nm_state |= NFSSTA_SESSPERSIST; 5025 NFSUNLOCKMNT(nmp); 5026 } 5027 5028 /* Get the fore channel slot count. */ 5029 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 5030 tl++; /* Skip the header pad size. */ 5031 5032 /* Make sure nm_wsize is small enough. */ 5033 maxval = fxdr_unsigned(uint32_t, *tl++); 5034 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 5035 if (nmp->nm_wsize > 8096) 5036 nmp->nm_wsize /= 2; 5037 else 5038 break; 5039 } 5040 sep->nfsess_maxreq = maxval; 5041 5042 /* Make sure nm_rsize is small enough. */ 5043 maxval = fxdr_unsigned(uint32_t, *tl++); 5044 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 5045 if (nmp->nm_rsize > 8096) 5046 nmp->nm_rsize /= 2; 5047 else 5048 break; 5049 } 5050 sep->nfsess_maxresp = maxval; 5051 5052 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 5053 tl++; 5054 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 5055 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 5056 irdcnt = fxdr_unsigned(int, *tl); 5057 if (irdcnt < 0 || irdcnt > 1) { 5058 error = NFSERR_BADXDR; 5059 goto nfsmout; 5060 } 5061 if (irdcnt > 0) 5062 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 5063 5064 /* and the back channel slot count. */ 5065 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 5066 tl += 5; 5067 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 5068 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 5069 } 5070 error = nd->nd_repstat; 5071 nfsmout: 5072 m_freem(nd->nd_mrep); 5073 return (error); 5074 } 5075 5076 /* 5077 * Do the NFSv4.1 Destroy Client. 5078 */ 5079 int 5080 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 5081 struct ucred *cred, NFSPROC_T *p) 5082 { 5083 uint32_t *tl; 5084 struct nfsrv_descript nfsd; 5085 struct nfsrv_descript *nd = &nfsd; 5086 int error; 5087 struct nfsclsession *tsep; 5088 5089 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 5090 0, NULL); 5091 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5092 tsep = nfsmnt_mdssession(nmp); 5093 *tl++ = tsep->nfsess_clientid.lval[0]; 5094 *tl = tsep->nfsess_clientid.lval[1]; 5095 nd->nd_flag |= ND_USEGSSNAME; 5096 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5097 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5098 if (error != 0) 5099 return (error); 5100 error = nd->nd_repstat; 5101 m_freem(nd->nd_mrep); 5102 return (error); 5103 } 5104 5105 /* 5106 * Do the NFSv4.1 LayoutGet. 5107 */ 5108 static int 5109 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 5110 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 5111 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 5112 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 5113 void *stuff) 5114 { 5115 struct nfsrv_descript nfsd, *nd = &nfsd; 5116 int error; 5117 5118 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 5119 0, cred); 5120 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 5121 layouttype, layoutlen, 0); 5122 nd->nd_flag |= ND_USEGSSNAME; 5123 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5124 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5125 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 5126 if (error != 0) 5127 return (error); 5128 if (nd->nd_repstat == 0) 5129 error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep, 5130 flhp); 5131 if (error == 0 && nd->nd_repstat != 0) 5132 error = nd->nd_repstat; 5133 m_freem(nd->nd_mrep); 5134 return (error); 5135 } 5136 5137 /* 5138 * Do the NFSv4.1 Get Device Info. 5139 */ 5140 int 5141 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 5142 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 5143 NFSPROC_T *p) 5144 { 5145 uint32_t cnt, *tl, vers, minorvers; 5146 struct nfsrv_descript nfsd; 5147 struct nfsrv_descript *nd = &nfsd; 5148 struct sockaddr_in sin, ssin; 5149 struct sockaddr_in6 sin6, ssin6; 5150 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 5151 struct nfscldevinfo *ndi; 5152 int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j; 5153 int stripecnt; 5154 uint8_t stripeindex; 5155 sa_family_t af, safilled; 5156 5157 ssin.sin_port = 0; /* To shut up compiler. */ 5158 ssin.sin_addr.s_addr = 0; /* ditto */ 5159 *ndip = NULL; 5160 ndi = NULL; 5161 gotdspp = NULL; 5162 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 5163 0, cred); 5164 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5165 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 5166 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5167 *tl++ = txdr_unsigned(layouttype); 5168 *tl++ = txdr_unsigned(100000); 5169 if (notifybitsp != NULL && *notifybitsp != 0) { 5170 *tl = txdr_unsigned(1); /* One word of bits. */ 5171 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5172 *tl = txdr_unsigned(*notifybitsp); 5173 } else 5174 *tl = txdr_unsigned(0); 5175 nd->nd_flag |= ND_USEGSSNAME; 5176 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5177 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5178 if (error != 0) 5179 return (error); 5180 if (nd->nd_repstat == 0) { 5181 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5182 if (layouttype != fxdr_unsigned(int, *tl)) 5183 printf("EEK! devinfo layout type not same!\n"); 5184 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 5185 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5186 stripecnt = fxdr_unsigned(int, *tl); 5187 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 5188 if (stripecnt < 1 || stripecnt > 4096) { 5189 printf("pNFS File layout devinfo stripecnt %d:" 5190 " out of range\n", stripecnt); 5191 error = NFSERR_BADXDR; 5192 goto nfsmout; 5193 } 5194 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 5195 NFSX_UNSIGNED); 5196 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 5197 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 5198 if (addrcnt < 1 || addrcnt > 128) { 5199 printf("NFS devinfo addrcnt %d: out of range\n", 5200 addrcnt); 5201 error = NFSERR_BADXDR; 5202 goto nfsmout; 5203 } 5204 5205 /* 5206 * Now we know how many stripe indices and addresses, so 5207 * we can allocate the structure the correct size. 5208 */ 5209 i = (stripecnt * sizeof(uint8_t)) / 5210 sizeof(struct nfsclds *) + 1; 5211 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5212 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5213 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 5214 M_ZERO); 5215 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5216 NFSX_V4DEVICEID); 5217 ndi->nfsdi_refcnt = 0; 5218 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5219 ndi->nfsdi_stripecnt = stripecnt; 5220 ndi->nfsdi_addrcnt = addrcnt; 5221 /* Fill in the stripe indices. */ 5222 for (i = 0; i < stripecnt; i++) { 5223 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5224 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5225 if (stripeindex >= addrcnt) { 5226 printf("pNFS File Layout devinfo" 5227 " stripeindex %d: too big\n", 5228 (int)stripeindex); 5229 error = NFSERR_BADXDR; 5230 goto nfsmout; 5231 } 5232 nfsfldi_setstripeindex(ndi, i, stripeindex); 5233 } 5234 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5235 /* For Flex File, we only get one address list. */ 5236 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5237 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5238 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5239 NFSX_V4DEVICEID); 5240 ndi->nfsdi_refcnt = 0; 5241 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5242 addrcnt = ndi->nfsdi_addrcnt = 1; 5243 } 5244 5245 /* Now, dissect the server address(es). */ 5246 safilled = AF_UNSPEC; 5247 for (i = 0; i < addrcnt; i++) { 5248 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5249 cnt = fxdr_unsigned(uint32_t, *tl); 5250 if (cnt == 0) { 5251 printf("NFS devinfo 0 len addrlist\n"); 5252 error = NFSERR_BADXDR; 5253 goto nfsmout; 5254 } 5255 dspp = nfsfldi_addr(ndi, i); 5256 safilled = AF_UNSPEC; 5257 for (j = 0; j < cnt; j++) { 5258 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5259 &isudp); 5260 if (error != 0 && error != EPERM) { 5261 error = NFSERR_BADXDR; 5262 goto nfsmout; 5263 } 5264 if (error == 0 && isudp == 0) { 5265 /* 5266 * The priority is: 5267 * - Same address family. 5268 * Save the address and dspp, so that 5269 * the connection can be done after 5270 * parsing is complete. 5271 */ 5272 if (safilled == AF_UNSPEC || 5273 (af == nmp->nm_nam->sa_family && 5274 safilled != nmp->nm_nam->sa_family) 5275 ) { 5276 if (af == AF_INET) 5277 ssin = sin; 5278 else 5279 ssin6 = sin6; 5280 safilled = af; 5281 gotdspp = dspp; 5282 } 5283 } 5284 } 5285 } 5286 5287 gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */ 5288 gotminor = NFSV41_MINORVERSION; 5289 /* For Flex File, we will take one of the versions to use. */ 5290 if (layouttype == NFSLAYOUT_FLEXFILE) { 5291 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5292 j = fxdr_unsigned(int, *tl); 5293 if (j < 1 || j > NFSDEV_MAXVERS) { 5294 printf("pNFS: too many versions\n"); 5295 error = NFSERR_BADXDR; 5296 goto nfsmout; 5297 } 5298 gotvers = 0; 5299 gotminor = 0; 5300 for (i = 0; i < j; i++) { 5301 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5302 vers = fxdr_unsigned(uint32_t, *tl++); 5303 minorvers = fxdr_unsigned(uint32_t, *tl++); 5304 if (vers == NFS_VER3) 5305 minorvers = 0; 5306 if ((vers == NFS_VER4 && ((minorvers == 5307 NFSV41_MINORVERSION && gotminor == 0) || 5308 minorvers == NFSV42_MINORVERSION)) || 5309 (vers == NFS_VER3 && gotvers == 0)) { 5310 gotvers = vers; 5311 gotminor = minorvers; 5312 /* We'll take this one. */ 5313 ndi->nfsdi_versindex = i; 5314 ndi->nfsdi_vers = vers; 5315 ndi->nfsdi_minorvers = minorvers; 5316 ndi->nfsdi_rsize = fxdr_unsigned( 5317 uint32_t, *tl++); 5318 ndi->nfsdi_wsize = fxdr_unsigned( 5319 uint32_t, *tl++); 5320 if (*tl == newnfs_true) 5321 ndi->nfsdi_flags |= 5322 NFSDI_TIGHTCOUPLED; 5323 else 5324 ndi->nfsdi_flags &= 5325 ~NFSDI_TIGHTCOUPLED; 5326 } 5327 } 5328 if (gotvers == 0) { 5329 printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n"); 5330 error = NFSERR_BADXDR; 5331 goto nfsmout; 5332 } 5333 } 5334 5335 /* And the notify bits. */ 5336 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5337 bitcnt = fxdr_unsigned(int, *tl); 5338 if (bitcnt > 0) { 5339 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5340 if (notifybitsp != NULL) 5341 *notifybitsp = 5342 fxdr_unsigned(uint32_t, *tl); 5343 } 5344 if (safilled != AF_UNSPEC) { 5345 KASSERT(ndi != NULL, ("ndi is NULL")); 5346 *ndip = ndi; 5347 } else 5348 error = EPERM; 5349 if (error == 0) { 5350 /* 5351 * Now we can do a TCP connection for the correct 5352 * NFS version and IP address. 5353 */ 5354 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5355 gotvers, gotminor, &dsp, p); 5356 } 5357 if (error == 0) { 5358 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5359 *gotdspp = dsp; 5360 } 5361 } 5362 if (nd->nd_repstat != 0 && error == 0) 5363 error = nd->nd_repstat; 5364 nfsmout: 5365 if (error != 0 && ndi != NULL) 5366 nfscl_freedevinfo(ndi); 5367 m_freem(nd->nd_mrep); 5368 return (error); 5369 } 5370 5371 /* 5372 * Do the NFSv4.1 LayoutCommit. 5373 */ 5374 int 5375 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5376 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5377 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5378 { 5379 uint32_t *tl; 5380 struct nfsrv_descript nfsd, *nd = &nfsd; 5381 int error; 5382 5383 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5384 0, 0, cred); 5385 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5386 NFSX_STATEID); 5387 txdr_hyper(off, tl); 5388 tl += 2; 5389 txdr_hyper(len, tl); 5390 tl += 2; 5391 if (reclaim != 0) 5392 *tl++ = newnfs_true; 5393 else 5394 *tl++ = newnfs_false; 5395 *tl++ = txdr_unsigned(stateidp->seqid); 5396 *tl++ = stateidp->other[0]; 5397 *tl++ = stateidp->other[1]; 5398 *tl++ = stateidp->other[2]; 5399 *tl++ = newnfs_true; 5400 if (lastbyte < off) 5401 lastbyte = off; 5402 else if (lastbyte >= (off + len)) 5403 lastbyte = off + len - 1; 5404 txdr_hyper(lastbyte, tl); 5405 tl += 2; 5406 *tl++ = newnfs_false; 5407 *tl++ = txdr_unsigned(layouttype); 5408 /* All supported layouts are 0 length. */ 5409 *tl = txdr_unsigned(0); 5410 nd->nd_flag |= ND_USEGSSNAME; 5411 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5412 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5413 if (error != 0) 5414 return (error); 5415 error = nd->nd_repstat; 5416 m_freem(nd->nd_mrep); 5417 return (error); 5418 } 5419 5420 /* 5421 * Do the NFSv4.1 LayoutReturn. 5422 */ 5423 int 5424 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5425 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5426 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5427 uint32_t stat, uint32_t op, char *devid) 5428 { 5429 uint32_t *tl; 5430 struct nfsrv_descript nfsd, *nd = &nfsd; 5431 uint64_t tu64; 5432 int error; 5433 5434 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5435 0, 0, cred); 5436 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5437 if (reclaim != 0) 5438 *tl++ = newnfs_true; 5439 else 5440 *tl++ = newnfs_false; 5441 *tl++ = txdr_unsigned(layouttype); 5442 *tl++ = txdr_unsigned(iomode); 5443 *tl = txdr_unsigned(layoutreturn); 5444 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5445 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5446 NFSX_UNSIGNED); 5447 txdr_hyper(offset, tl); 5448 tl += 2; 5449 txdr_hyper(len, tl); 5450 tl += 2; 5451 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5452 *tl++ = txdr_unsigned(stateidp->seqid); 5453 *tl++ = stateidp->other[0]; 5454 *tl++ = stateidp->other[1]; 5455 *tl++ = stateidp->other[2]; 5456 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5457 *tl = txdr_unsigned(0); 5458 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5459 if (stat != 0) { 5460 *tl = txdr_unsigned(2 * NFSX_HYPER + 5461 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5462 NFSX_UNSIGNED); 5463 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + 5464 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5465 NFSX_UNSIGNED); 5466 *tl++ = txdr_unsigned(1); /* One error. */ 5467 tu64 = 0; /* Offset. */ 5468 txdr_hyper(tu64, tl); tl += 2; 5469 tu64 = UINT64_MAX; /* Length. */ 5470 txdr_hyper(tu64, tl); tl += 2; 5471 NFSBCOPY(stateidp, tl, NFSX_STATEID); 5472 tl += (NFSX_STATEID / NFSX_UNSIGNED); 5473 *tl++ = txdr_unsigned(1); /* One error. */ 5474 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5475 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5476 *tl++ = txdr_unsigned(stat); 5477 *tl++ = txdr_unsigned(op); 5478 } else { 5479 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5480 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5481 /* No ioerrs. */ 5482 *tl++ = 0; 5483 } 5484 *tl = 0; /* No stats yet. */ 5485 } 5486 } 5487 nd->nd_flag |= ND_USEGSSNAME; 5488 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5489 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5490 if (error != 0) 5491 return (error); 5492 if (nd->nd_repstat == 0) { 5493 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5494 if (*tl != 0) { 5495 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5496 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5497 stateidp->other[0] = *tl++; 5498 stateidp->other[1] = *tl++; 5499 stateidp->other[2] = *tl; 5500 } 5501 } else 5502 error = nd->nd_repstat; 5503 nfsmout: 5504 m_freem(nd->nd_mrep); 5505 return (error); 5506 } 5507 5508 /* 5509 * Do the NFSv4.2 LayoutError. 5510 */ 5511 static int 5512 nfsrpc_layouterror(struct nfsmount *nmp, uint8_t *fh, int fhlen, uint64_t offset, 5513 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5514 uint32_t stat, uint32_t op, char *devid) 5515 { 5516 uint32_t *tl; 5517 struct nfsrv_descript nfsd, *nd = &nfsd; 5518 int error; 5519 5520 nfscl_reqstart(nd, NFSPROC_LAYOUTERROR, nmp, fh, fhlen, NULL, NULL, 5521 0, 0, cred); 5522 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5523 NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5524 txdr_hyper(offset, tl); tl += 2; 5525 txdr_hyper(len, tl); tl += 2; 5526 *tl++ = txdr_unsigned(stateidp->seqid); 5527 *tl++ = stateidp->other[0]; 5528 *tl++ = stateidp->other[1]; 5529 *tl++ = stateidp->other[2]; 5530 *tl++ = txdr_unsigned(1); 5531 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5532 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5533 *tl++ = txdr_unsigned(stat); 5534 *tl = txdr_unsigned(op); 5535 nd->nd_flag |= ND_USEGSSNAME; 5536 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5537 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5538 if (error != 0) 5539 return (error); 5540 if (nd->nd_repstat != 0) 5541 error = nd->nd_repstat; 5542 m_freem(nd->nd_mrep); 5543 return (error); 5544 } 5545 5546 /* 5547 * Acquire a layout and devinfo, if possible. The caller must have acquired 5548 * a reference count on the nfsclclient structure before calling this. 5549 * Return the layout in lypp with a reference count on it, if successful. 5550 */ 5551 static int 5552 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5553 int iomode, uint32_t rw, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, 5554 uint64_t off, struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5555 { 5556 struct nfscllayout *lyp; 5557 struct nfsclflayout *flp; 5558 struct nfsclflayouthead flh; 5559 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5560 nfsv4stateid_t stateid; 5561 struct nfsclsession *tsep; 5562 5563 *lypp = NULL; 5564 if (NFSHASFLEXFILE(nmp)) 5565 layouttype = NFSLAYOUT_FLEXFILE; 5566 else 5567 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5568 /* 5569 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5570 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5571 * flp == NULL. 5572 */ 5573 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5574 off, rw, &flp, &recalled); 5575 islocked = 0; 5576 if (lyp == NULL || flp == NULL) { 5577 if (recalled != 0) 5578 return (EIO); 5579 LIST_INIT(&flh); 5580 tsep = nfsmnt_mdssession(nmp); 5581 layoutlen = tsep->nfsess_maxcache - 5582 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5583 if (lyp == NULL) { 5584 stateid.seqid = 0; 5585 stateid.other[0] = stateidp->other[0]; 5586 stateid.other[1] = stateidp->other[1]; 5587 stateid.other[2] = stateidp->other[2]; 5588 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5589 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5590 (uint64_t)0, layouttype, layoutlen, &stateid, 5591 &retonclose, &flh, cred, p, NULL); 5592 } else { 5593 islocked = 1; 5594 stateid.seqid = lyp->nfsly_stateid.seqid; 5595 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5596 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5597 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5598 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5599 nfhp->nfh_len, iomode, off, UINT64_MAX, 5600 (uint64_t)0, layouttype, layoutlen, &stateid, 5601 &retonclose, &flh, cred, p, NULL); 5602 } 5603 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5604 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5605 &flh, layouttype, error, NULL, cred, p); 5606 if (error == 0) 5607 *lypp = lyp; 5608 else if (islocked != 0) 5609 nfscl_rellayout(lyp, 1); 5610 } else 5611 *lypp = lyp; 5612 return (error); 5613 } 5614 5615 /* 5616 * Do a TCP connection plus exchange id and create session. 5617 * If successful, a "struct nfsclds" is linked into the list for the 5618 * mount point and a pointer to it is returned. 5619 */ 5620 static int 5621 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5622 struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers, 5623 struct nfsclds **dspp, NFSPROC_T *p) 5624 { 5625 struct sockaddr_in *msad, *sad; 5626 struct sockaddr_in6 *msad6, *sad6; 5627 struct nfsclclient *clp; 5628 struct nfssockreq *nrp; 5629 struct nfsclds *dsp, *tdsp; 5630 int error, firsttry; 5631 enum nfsclds_state retv; 5632 uint32_t sequenceid = 0; 5633 5634 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5635 ("nfsrpc_fillsa: NULL nr_cred")); 5636 NFSLOCKCLSTATE(); 5637 clp = nmp->nm_clp; 5638 NFSUNLOCKCLSTATE(); 5639 if (clp == NULL) 5640 return (EPERM); 5641 if (af == AF_INET) { 5642 NFSLOCKMNT(nmp); 5643 /* 5644 * Check to see if we already have a session for this 5645 * address that is usable for a DS. 5646 * Note that the MDS's address is in a different place 5647 * than the sessions already acquired for DS's. 5648 */ 5649 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5650 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5651 while (tdsp != NULL) { 5652 if (msad != NULL && msad->sin_family == AF_INET && 5653 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5654 sin->sin_port == msad->sin_port && 5655 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5656 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5657 *dspp = tdsp; 5658 NFSUNLOCKMNT(nmp); 5659 NFSCL_DEBUG(4, "fnd same addr\n"); 5660 return (0); 5661 } 5662 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5663 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5664 msad = (struct sockaddr_in *) 5665 tdsp->nfsclds_sockp->nr_nam; 5666 else 5667 msad = NULL; 5668 } 5669 NFSUNLOCKMNT(nmp); 5670 5671 /* No IP address match, so look for new/trunked one. */ 5672 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5673 sad->sin_len = sizeof(*sad); 5674 sad->sin_family = AF_INET; 5675 sad->sin_port = sin->sin_port; 5676 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5677 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5678 nrp->nr_nam = (struct sockaddr *)sad; 5679 } else if (af == AF_INET6) { 5680 NFSLOCKMNT(nmp); 5681 /* 5682 * Check to see if we already have a session for this 5683 * address that is usable for a DS. 5684 * Note that the MDS's address is in a different place 5685 * than the sessions already acquired for DS's. 5686 */ 5687 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5688 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5689 while (tdsp != NULL) { 5690 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5691 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5692 &msad6->sin6_addr) && 5693 sin6->sin6_port == msad6->sin6_port && 5694 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5695 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5696 *dspp = tdsp; 5697 NFSUNLOCKMNT(nmp); 5698 return (0); 5699 } 5700 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5701 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5702 msad6 = (struct sockaddr_in6 *) 5703 tdsp->nfsclds_sockp->nr_nam; 5704 else 5705 msad6 = NULL; 5706 } 5707 NFSUNLOCKMNT(nmp); 5708 5709 /* No IP address match, so look for new/trunked one. */ 5710 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5711 sad6->sin6_len = sizeof(*sad6); 5712 sad6->sin6_family = AF_INET6; 5713 sad6->sin6_port = sin6->sin6_port; 5714 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5715 sizeof(struct in6_addr)); 5716 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5717 nrp->nr_nam = (struct sockaddr *)sad6; 5718 } else 5719 return (EPERM); 5720 5721 nrp->nr_sotype = SOCK_STREAM; 5722 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5723 nrp->nr_prog = NFS_PROG; 5724 nrp->nr_vers = vers; 5725 5726 /* 5727 * Use the credentials that were used for the mount, which are 5728 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5729 * Ref. counting the credentials with crhold() is probably not 5730 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5731 * unmount, but I did it anyhow. 5732 */ 5733 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5734 error = newnfs_connect(nmp, nrp, NULL, p, 0, false, &nrp->nr_client); 5735 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5736 5737 dsp = NULL; 5738 /* Now, do the exchangeid and create session. */ 5739 if (error == 0) { 5740 if (vers == NFS_VER4) { 5741 firsttry = 0; 5742 do { 5743 error = nfsrpc_exchangeid(nmp, clp, nrp, 5744 minorvers, NFSV4EXCH_USEPNFSDS, &dsp, 5745 nrp->nr_cred, p); 5746 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5747 if (error == NFSERR_MINORVERMISMATCH) 5748 minorvers = NFSV42_MINORVERSION; 5749 } while (error == NFSERR_MINORVERMISMATCH && 5750 firsttry++ == 0); 5751 if (error != 0) 5752 newnfs_disconnect(NULL, nrp); 5753 } else { 5754 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5755 M_WAITOK | M_ZERO); 5756 dsp->nfsclds_flags |= NFSCLDS_DS; 5757 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5758 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5759 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5760 NULL, MTX_DEF); 5761 } 5762 } 5763 if (error == 0) { 5764 dsp->nfsclds_sockp = nrp; 5765 if (vers == NFS_VER4) { 5766 NFSLOCKMNT(nmp); 5767 retv = nfscl_getsameserver(nmp, dsp, &tdsp, 5768 &sequenceid); 5769 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5770 if (retv == NFSDSP_USETHISSESSION && 5771 nfscl_dssameconn != 0) { 5772 NFSLOCKDS(tdsp); 5773 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN; 5774 NFSUNLOCKDS(tdsp); 5775 NFSUNLOCKMNT(nmp); 5776 /* 5777 * If there is already a session for this 5778 * server, use it. 5779 */ 5780 newnfs_disconnect(NULL, nrp); 5781 nfscl_freenfsclds(dsp); 5782 *dspp = tdsp; 5783 return (0); 5784 } 5785 if (retv == NFSDSP_NOTFOUND) 5786 sequenceid = 5787 dsp->nfsclds_sess.nfsess_sequenceid; 5788 NFSUNLOCKMNT(nmp); 5789 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5790 nrp, dsp, sequenceid, 0, nrp->nr_cred, p); 5791 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5792 } 5793 } else { 5794 NFSFREECRED(nrp->nr_cred); 5795 NFSFREEMUTEX(&nrp->nr_mtx); 5796 free(nrp->nr_nam, M_SONAME); 5797 free(nrp, M_NFSSOCKREQ); 5798 } 5799 if (error == 0) { 5800 NFSCL_DEBUG(3, "add DS session\n"); 5801 /* 5802 * Put it at the end of the list. That way the list 5803 * is ordered by when the entry was added. This matters 5804 * since the one done first is the one that should be 5805 * used for sequencid'ing any subsequent create sessions. 5806 */ 5807 NFSLOCKMNT(nmp); 5808 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5809 NFSUNLOCKMNT(nmp); 5810 *dspp = dsp; 5811 } else if (dsp != NULL) { 5812 newnfs_disconnect(NULL, nrp); 5813 nfscl_freenfsclds(dsp); 5814 } 5815 return (error); 5816 } 5817 5818 /* 5819 * Do the NFSv4.1 Reclaim Complete. 5820 */ 5821 int 5822 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5823 { 5824 uint32_t *tl; 5825 struct nfsrv_descript nfsd; 5826 struct nfsrv_descript *nd = &nfsd; 5827 int error; 5828 5829 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5830 0, cred); 5831 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5832 *tl = newnfs_false; 5833 nd->nd_flag |= ND_USEGSSNAME; 5834 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5835 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5836 if (error != 0) 5837 return (error); 5838 error = nd->nd_repstat; 5839 m_freem(nd->nd_mrep); 5840 return (error); 5841 } 5842 5843 /* 5844 * Initialize the slot tables for a session. 5845 */ 5846 static void 5847 nfscl_initsessionslots(struct nfsclsession *sep) 5848 { 5849 int i; 5850 5851 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5852 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5853 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5854 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5855 } 5856 for (i = 0; i < 64; i++) 5857 sep->nfsess_slotseq[i] = 0; 5858 sep->nfsess_slots = 0; 5859 sep->nfsess_badslots = 0; 5860 } 5861 5862 /* 5863 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5864 */ 5865 int 5866 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5867 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5868 { 5869 struct nfsnode *np = VTONFS(vp); 5870 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 5871 struct nfscllayout *layp; 5872 struct nfscldevinfo *dip; 5873 struct nfsclflayout *rflp; 5874 struct mbuf *m, *m2; 5875 struct nfsclwritedsdorpc *drpc, *tdrpc; 5876 nfsv4stateid_t stateid; 5877 struct ucred *newcred; 5878 uint64_t lastbyte, len, off, oresid, xfer; 5879 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5880 void *lckp; 5881 uint8_t *dev; 5882 void *iovbase = NULL; 5883 size_t iovlen = 0; 5884 off_t offs = 0; 5885 ssize_t resid = 0; 5886 uint32_t op; 5887 5888 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5889 (np->n_flag & NNOLAYOUT) != 0) 5890 return (EIO); 5891 /* Now, get a reference cnt on the clientid for this mount. */ 5892 if (nfscl_getref(nmp) == 0) 5893 return (EIO); 5894 5895 /* Find an appropriate stateid. */ 5896 newcred = NFSNEWCRED(cred); 5897 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5898 rwaccess, 1, newcred, p, &stateid, &lckp); 5899 if (error != 0) { 5900 NFSFREECRED(newcred); 5901 nfscl_relref(nmp); 5902 return (error); 5903 } 5904 /* Search for a layout for this file. */ 5905 off = uiop->uio_offset; 5906 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5907 np->n_fhp->nfh_len, off, rwaccess, &rflp, &recalled); 5908 if (layp == NULL || rflp == NULL) { 5909 if (recalled != 0) { 5910 NFSFREECRED(newcred); 5911 if (lckp != NULL) 5912 nfscl_lockderef(lckp); 5913 nfscl_relref(nmp); 5914 return (EIO); 5915 } 5916 if (layp != NULL) { 5917 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5918 layp = NULL; 5919 } 5920 /* Try and get a Layout, if it is supported. */ 5921 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5922 (np->n_flag & NWRITEOPENED) != 0) 5923 iolaymode = NFSLAYOUTIOMODE_RW; 5924 else 5925 iolaymode = NFSLAYOUTIOMODE_READ; 5926 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5927 rwaccess, NULL, &stateid, off, &layp, newcred, p); 5928 if (error != 0) { 5929 NFSLOCKNODE(np); 5930 np->n_flag |= NNOLAYOUT; 5931 NFSUNLOCKNODE(np); 5932 if (lckp != NULL) 5933 nfscl_lockderef(lckp); 5934 NFSFREECRED(newcred); 5935 if (layp != NULL) 5936 nfscl_rellayout(layp, 0); 5937 nfscl_relref(nmp); 5938 return (error); 5939 } 5940 } 5941 5942 /* 5943 * Loop around finding a layout that works for the first part of 5944 * this I/O operation, and then call the function that actually 5945 * does the RPC. 5946 */ 5947 eof = 0; 5948 len = (uint64_t)uiop->uio_resid; 5949 while (len > 0 && error == 0 && eof == 0) { 5950 off = uiop->uio_offset; 5951 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5952 if (error == 0) { 5953 oresid = xfer = (uint64_t)uiop->uio_resid; 5954 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5955 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5956 /* 5957 * For Flex File layout with mirrored DSs, select one 5958 * of them at random for reads. For writes and commits, 5959 * do all mirrors. 5960 */ 5961 m = NULL; 5962 tdrpc = drpc = NULL; 5963 firstmirror = 0; 5964 mirrorcnt = 1; 5965 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5966 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5967 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5968 firstmirror = arc4random() % mirrorcnt; 5969 mirrorcnt = firstmirror + 1; 5970 } else { 5971 if (docommit == 0) { 5972 /* 5973 * Save values, so uiop can be 5974 * rolled back upon a write 5975 * error. 5976 */ 5977 offs = uiop->uio_offset; 5978 resid = uiop->uio_resid; 5979 iovbase = 5980 uiop->uio_iov->iov_base; 5981 iovlen = uiop->uio_iov->iov_len; 5982 m = nfsm_uiombuflist(uiop, len, 5983 0); 5984 } 5985 tdrpc = drpc = malloc(sizeof(*drpc) * 5986 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5987 M_ZERO); 5988 } 5989 } 5990 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5991 m2 = NULL; 5992 if (m != NULL && i < mirrorcnt - 1) 5993 m2 = m_copym(m, 0, M_COPYALL, M_WAITOK); 5994 else { 5995 m2 = m; 5996 m = NULL; 5997 } 5998 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) { 5999 dev = rflp->nfsfl_ffm[i].dev; 6000 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 6001 rflp->nfsfl_ffm[i].devp); 6002 } else { 6003 dev = rflp->nfsfl_dev; 6004 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 6005 rflp->nfsfl_devp); 6006 } 6007 if (dip != NULL) { 6008 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 6009 != 0) 6010 error = nfscl_dofflayoutio(vp, 6011 uiop, iomode, must_commit, 6012 &eof, &stateid, rwaccess, 6013 dip, layp, rflp, off, xfer, 6014 i, docommit, m2, tdrpc, 6015 newcred, p); 6016 else 6017 error = nfscl_doflayoutio(vp, 6018 uiop, iomode, must_commit, 6019 &eof, &stateid, rwaccess, 6020 dip, layp, rflp, off, xfer, 6021 docommit, newcred, p); 6022 nfscl_reldevinfo(dip); 6023 } else { 6024 if (m2 != NULL) 6025 m_freem(m2); 6026 error = EIO; 6027 } 6028 tdrpc++; 6029 } 6030 if (m != NULL) 6031 m_freem(m); 6032 tdrpc = drpc; 6033 timo = hz / 50; /* Wait for 20msec. */ 6034 if (timo < 1) 6035 timo = 1; 6036 for (i = firstmirror; i < mirrorcnt - 1 && 6037 tdrpc != NULL; i++, tdrpc++) { 6038 /* 6039 * For the unused drpc entries, both inprog and 6040 * err == 0, so this loop won't break. 6041 */ 6042 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6043 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 6044 timo); 6045 if (error == 0 && tdrpc->err != 0) 6046 error = tdrpc->err; 6047 if (rwaccess != NFSV4OPEN_ACCESSREAD && 6048 docommit == 0 && *must_commit == 0 && 6049 tdrpc->must_commit == 1) 6050 *must_commit = 1; 6051 } 6052 free(drpc, M_TEMP); 6053 if (error == 0) { 6054 if (mirrorcnt > 1 && rwaccess == 6055 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 6056 NFSLOCKCLSTATE(); 6057 layp->nfsly_flags |= NFSLY_WRITTEN; 6058 NFSUNLOCKCLSTATE(); 6059 } 6060 lastbyte = off + xfer - 1; 6061 NFSLOCKCLSTATE(); 6062 if (lastbyte > layp->nfsly_lastbyte) 6063 layp->nfsly_lastbyte = lastbyte; 6064 NFSUNLOCKCLSTATE(); 6065 } else if (error == NFSERR_OPENMODE && 6066 rwaccess == NFSV4OPEN_ACCESSREAD) { 6067 NFSLOCKMNT(nmp); 6068 nmp->nm_state |= NFSSTA_OPENMODE; 6069 NFSUNLOCKMNT(nmp); 6070 } else if ((error == NFSERR_NOSPC || 6071 error == NFSERR_IO || error == NFSERR_NXIO) && 6072 nmp->nm_minorvers == NFSV42_MINORVERSION) { 6073 if (docommit != 0) 6074 op = NFSV4OP_COMMIT; 6075 else if (rwaccess == NFSV4OPEN_ACCESSREAD) 6076 op = NFSV4OP_READ; 6077 else 6078 op = NFSV4OP_WRITE; 6079 nfsrpc_layouterror(nmp, np->n_fhp->nfh_fh, 6080 np->n_fhp->nfh_len, off, xfer, 6081 &layp->nfsly_stateid, newcred, p, error, op, 6082 dip->nfsdi_deviceid); 6083 error = EIO; 6084 } else 6085 error = EIO; 6086 if (error == 0) 6087 len -= (oresid - (uint64_t)uiop->uio_resid); 6088 else if (mirrorcnt > 1 && rwaccess == 6089 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 6090 /* 6091 * In case the rpc gets retried, roll the 6092 * uio fields changed by nfsm_uiombuflist() 6093 * back. 6094 */ 6095 uiop->uio_offset = offs; 6096 uiop->uio_resid = resid; 6097 uiop->uio_iov->iov_base = iovbase; 6098 uiop->uio_iov->iov_len = iovlen; 6099 } 6100 } 6101 } 6102 if (lckp != NULL) 6103 nfscl_lockderef(lckp); 6104 NFSFREECRED(newcred); 6105 nfscl_rellayout(layp, 0); 6106 nfscl_relref(nmp); 6107 return (error); 6108 } 6109 6110 /* 6111 * Find a file layout that will handle the first bytes of the requested 6112 * range and return the information from it needed to the I/O operation. 6113 */ 6114 int 6115 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 6116 struct nfsclflayout **retflpp) 6117 { 6118 struct nfsclflayout *flp, *nflp, *rflp; 6119 uint32_t rw; 6120 6121 rflp = NULL; 6122 rw = rwaccess; 6123 /* For reading, do the Read list first and then the Write list. */ 6124 do { 6125 if (rw == NFSV4OPEN_ACCESSREAD) 6126 flp = LIST_FIRST(&lyp->nfsly_flayread); 6127 else 6128 flp = LIST_FIRST(&lyp->nfsly_flayrw); 6129 while (flp != NULL) { 6130 nflp = LIST_NEXT(flp, nfsfl_list); 6131 if (flp->nfsfl_off > off) 6132 break; 6133 if (flp->nfsfl_end > off && 6134 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 6135 rflp = flp; 6136 flp = nflp; 6137 } 6138 if (rw == NFSV4OPEN_ACCESSREAD) 6139 rw = NFSV4OPEN_ACCESSWRITE; 6140 else 6141 rw = 0; 6142 } while (rw != 0); 6143 if (rflp != NULL) { 6144 /* This one covers the most bytes starting at off. */ 6145 *retflpp = rflp; 6146 return (0); 6147 } 6148 return (EIO); 6149 } 6150 6151 /* 6152 * Do I/O using an NFSv4.1 or NFSv4.2 file layout. 6153 */ 6154 static int 6155 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6156 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6157 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6158 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 6159 { 6160 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 6161 int commit_thru_mds, error, stripe_index, stripe_pos, minorvers; 6162 struct nfsnode *np; 6163 struct nfsfh *fhp; 6164 struct nfsclds **dspp; 6165 6166 np = VTONFS(vp); 6167 rel_off = off - flp->nfsfl_patoff; 6168 stripe_unit_size = flp->nfsfl_util & NFSFLAYUTIL_STRIPE_MASK; 6169 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 6170 dp->nfsdi_stripecnt; 6171 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 6172 error = 0; 6173 6174 /* Loop around, doing I/O for each stripe unit. */ 6175 while (len > 0 && error == 0) { 6176 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 6177 dspp = nfsfldi_addr(dp, stripe_index); 6178 if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0) 6179 minorvers = NFSV42_MINORVERSION; 6180 else 6181 minorvers = NFSV41_MINORVERSION; 6182 if (len > transfer && docommit == 0) 6183 xfer = transfer; 6184 else 6185 xfer = len; 6186 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 6187 /* Dense layout. */ 6188 if (stripe_pos >= flp->nfsfl_fhcnt) 6189 return (EIO); 6190 fhp = flp->nfsfl_fh[stripe_pos]; 6191 io_off = (rel_off / (stripe_unit_size * 6192 dp->nfsdi_stripecnt)) * stripe_unit_size + 6193 rel_off % stripe_unit_size; 6194 } else { 6195 /* Sparse layout. */ 6196 if (flp->nfsfl_fhcnt > 1) { 6197 if (stripe_index >= flp->nfsfl_fhcnt) 6198 return (EIO); 6199 fhp = flp->nfsfl_fh[stripe_index]; 6200 } else if (flp->nfsfl_fhcnt == 1) 6201 fhp = flp->nfsfl_fh[0]; 6202 else 6203 fhp = np->n_fhp; 6204 io_off = off; 6205 } 6206 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 6207 commit_thru_mds = 1; 6208 if (docommit != 0) 6209 error = EIO; 6210 } else { 6211 commit_thru_mds = 0; 6212 NFSLOCKNODE(np); 6213 np->n_flag |= NDSCOMMIT; 6214 NFSUNLOCKNODE(np); 6215 } 6216 if (docommit != 0) { 6217 if (error == 0) 6218 error = nfsrpc_commitds(vp, io_off, xfer, 6219 *dspp, fhp, NFS_VER4, minorvers, cred, p); 6220 if (error == 0) { 6221 /* 6222 * Set both eof and uio_resid = 0 to end any 6223 * loops. 6224 */ 6225 *eofp = 1; 6226 uiop->uio_resid = 0; 6227 } else { 6228 NFSLOCKNODE(np); 6229 np->n_flag &= ~NDSCOMMIT; 6230 NFSUNLOCKNODE(np); 6231 } 6232 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6233 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6234 io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p); 6235 else { 6236 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 6237 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 6238 0, NFS_VER4, minorvers, cred, p); 6239 if (error == 0) { 6240 NFSLOCKCLSTATE(); 6241 lyp->nfsly_flags |= NFSLY_WRITTEN; 6242 NFSUNLOCKCLSTATE(); 6243 } 6244 } 6245 if (error == 0) { 6246 transfer = stripe_unit_size; 6247 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 6248 len -= xfer; 6249 off += xfer; 6250 } 6251 } 6252 return (error); 6253 } 6254 6255 /* 6256 * Do I/O using an NFSv4.1 flex file layout. 6257 */ 6258 static int 6259 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6260 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6261 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6262 uint64_t len, int mirror, int docommit, struct mbuf *mp, 6263 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6264 { 6265 uint64_t xfer; 6266 int error; 6267 struct nfsnode *np; 6268 struct nfsfh *fhp; 6269 struct nfsclds **dspp; 6270 struct ucred *tcred; 6271 struct mbuf *m, *m2; 6272 uint32_t copylen; 6273 6274 np = VTONFS(vp); 6275 error = 0; 6276 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 6277 (uintmax_t)len); 6278 /* Loop around, doing I/O for each stripe unit. */ 6279 while (len > 0 && error == 0) { 6280 dspp = nfsfldi_addr(dp, 0); 6281 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 6282 stateidp = &flp->nfsfl_ffm[mirror].st; 6283 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 6284 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 6285 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 6286 tcred = NFSNEWCRED(cred); 6287 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 6288 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 6289 tcred->cr_ngroups = 1; 6290 } else 6291 tcred = cred; 6292 if (rwflag == NFSV4OPEN_ACCESSREAD) 6293 copylen = dp->nfsdi_rsize; 6294 else { 6295 copylen = dp->nfsdi_wsize; 6296 if (len > copylen && mp != NULL) { 6297 /* 6298 * When a mirrored configuration needs to do 6299 * multiple writes to each mirror, all writes 6300 * except the last one must be a multiple of 6301 * 4 bytes. This is required so that the XDR 6302 * does not need padding. 6303 * If possible, clip the size to an exact 6304 * multiple of the mbuf length, so that the 6305 * split will be on an mbuf boundary. 6306 */ 6307 copylen &= 0xfffffffc; 6308 if (copylen > mp->m_len) 6309 copylen = copylen / mp->m_len * 6310 mp->m_len; 6311 } 6312 } 6313 NFSLOCKNODE(np); 6314 np->n_flag |= NDSCOMMIT; 6315 NFSUNLOCKNODE(np); 6316 if (len > copylen && docommit == 0) 6317 xfer = copylen; 6318 else 6319 xfer = len; 6320 if (docommit != 0) { 6321 if (error == 0) { 6322 /* 6323 * Do last mirrored DS commit with this thread. 6324 */ 6325 if (mirror < flp->nfsfl_mirrorcnt - 1) 6326 error = nfsio_commitds(vp, off, xfer, 6327 *dspp, fhp, dp->nfsdi_vers, 6328 dp->nfsdi_minorvers, drpc, tcred, 6329 p); 6330 else 6331 error = nfsrpc_commitds(vp, off, xfer, 6332 *dspp, fhp, dp->nfsdi_vers, 6333 dp->nfsdi_minorvers, tcred, p); 6334 NFSCL_DEBUG(4, "commitds=%d\n", error); 6335 if (error != 0 && error != EACCES && error != 6336 ESTALE) { 6337 NFSCL_DEBUG(4, 6338 "DS layreterr for commit\n"); 6339 nfscl_dserr(NFSV4OP_COMMIT, error, dp, 6340 lyp, *dspp); 6341 } 6342 } 6343 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6344 if (error == 0) { 6345 /* 6346 * Set both eof and uio_resid = 0 to end any 6347 * loops. 6348 */ 6349 *eofp = 1; 6350 uiop->uio_resid = 0; 6351 } else { 6352 NFSLOCKNODE(np); 6353 np->n_flag &= ~NDSCOMMIT; 6354 NFSUNLOCKNODE(np); 6355 } 6356 } else if (rwflag == NFSV4OPEN_ACCESSREAD) { 6357 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6358 off, xfer, fhp, 1, dp->nfsdi_vers, 6359 dp->nfsdi_minorvers, tcred, p); 6360 NFSCL_DEBUG(4, "readds=%d\n", error); 6361 if (error != 0 && error != EACCES && error != ESTALE) { 6362 NFSCL_DEBUG(4, "DS layreterr for read\n"); 6363 nfscl_dserr(NFSV4OP_READ, error, dp, lyp, 6364 *dspp); 6365 } 6366 } else { 6367 if (flp->nfsfl_mirrorcnt == 1) { 6368 error = nfsrpc_writeds(vp, uiop, iomode, 6369 must_commit, stateidp, *dspp, off, xfer, 6370 fhp, 0, 1, dp->nfsdi_vers, 6371 dp->nfsdi_minorvers, tcred, p); 6372 if (error == 0) { 6373 NFSLOCKCLSTATE(); 6374 lyp->nfsly_flags |= NFSLY_WRITTEN; 6375 NFSUNLOCKCLSTATE(); 6376 } 6377 } else { 6378 m = mp; 6379 if (xfer < len) { 6380 /* The mbuf list must be split. */ 6381 m2 = nfsm_split(mp, xfer); 6382 if (m2 != NULL) 6383 mp = m2; 6384 else { 6385 m_freem(mp); 6386 error = EIO; 6387 } 6388 } 6389 NFSCL_DEBUG(4, "mcopy len=%jd xfer=%jd\n", 6390 (uintmax_t)len, (uintmax_t)xfer); 6391 /* 6392 * Do last write to a mirrored DS with this 6393 * thread. 6394 */ 6395 if (error == 0) { 6396 if (mirror < flp->nfsfl_mirrorcnt - 1) 6397 error = nfsio_writedsmir(vp, 6398 iomode, must_commit, 6399 stateidp, *dspp, off, 6400 xfer, fhp, m, 6401 dp->nfsdi_vers, 6402 dp->nfsdi_minorvers, drpc, 6403 tcred, p); 6404 else 6405 error = nfsrpc_writedsmir(vp, 6406 iomode, must_commit, 6407 stateidp, *dspp, off, 6408 xfer, fhp, m, 6409 dp->nfsdi_vers, 6410 dp->nfsdi_minorvers, tcred, 6411 p); 6412 } 6413 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); 6414 if (error != 0 && error != EACCES && error != 6415 ESTALE) { 6416 NFSCL_DEBUG(4, 6417 "DS layreterr for write\n"); 6418 nfscl_dserr(NFSV4OP_WRITE, error, dp, 6419 lyp, *dspp); 6420 } 6421 } 6422 } 6423 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error); 6424 if (error == 0) { 6425 len -= xfer; 6426 off += xfer; 6427 } 6428 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6429 NFSFREECRED(tcred); 6430 } 6431 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6432 return (error); 6433 } 6434 6435 /* 6436 * The actual read RPC done to a DS. 6437 */ 6438 static int 6439 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6440 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6441 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6442 { 6443 uint32_t *tl; 6444 int attrflag, error, retlen; 6445 struct nfsrv_descript nfsd; 6446 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6447 struct nfsrv_descript *nd = &nfsd; 6448 struct nfssockreq *nrp; 6449 struct nfsvattr na; 6450 6451 nd->nd_mrep = NULL; 6452 if (vers == 0 || vers == NFS_VER4) { 6453 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6454 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6455 NULL); 6456 vers = NFS_VER4; 6457 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6458 if (flex != 0) 6459 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6460 else 6461 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6462 } else { 6463 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6464 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6465 NULL); 6466 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READ]); 6467 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READDS]); 6468 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6469 } 6470 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6471 txdr_hyper(io_off, tl); 6472 *(tl + 2) = txdr_unsigned(len); 6473 nrp = dsp->nfsclds_sockp; 6474 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 6475 if (nrp == NULL) 6476 /* If NULL, use the MDS socket. */ 6477 nrp = &nmp->nm_sockreq; 6478 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6479 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6480 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat, 6481 error); 6482 if (error != 0) 6483 return (error); 6484 if (vers == NFS_VER3) { 6485 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6486 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6487 if (error != 0) 6488 goto nfsmout; 6489 } 6490 if (nd->nd_repstat != 0) { 6491 error = nd->nd_repstat; 6492 goto nfsmout; 6493 } 6494 if (vers == NFS_VER3) { 6495 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6496 *eofp = fxdr_unsigned(int, *(tl + 1)); 6497 } else { 6498 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6499 *eofp = fxdr_unsigned(int, *tl); 6500 } 6501 NFSM_STRSIZ(retlen, len); 6502 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6503 error = nfsm_mbufuio(nd, uiop, retlen); 6504 nfsmout: 6505 if (nd->nd_mrep != NULL) 6506 m_freem(nd->nd_mrep); 6507 return (error); 6508 } 6509 6510 /* 6511 * The actual write RPC done to a DS. 6512 */ 6513 static int 6514 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6515 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6516 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6517 struct ucred *cred, NFSPROC_T *p) 6518 { 6519 uint32_t *tl; 6520 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6521 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6522 int32_t backup; 6523 struct nfsrv_descript nfsd; 6524 struct nfsrv_descript *nd = &nfsd; 6525 struct nfssockreq *nrp; 6526 struct nfsvattr na; 6527 6528 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6529 nd->nd_mrep = NULL; 6530 if (vers == 0 || vers == NFS_VER4) { 6531 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6532 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6533 NULL); 6534 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6535 vers = NFS_VER4; 6536 if (flex != 0) 6537 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6538 else 6539 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6540 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6541 } else { 6542 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6543 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6544 NULL); 6545 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6546 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6547 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6548 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6549 } 6550 txdr_hyper(io_off, tl); 6551 tl += 2; 6552 if (vers == NFS_VER3) 6553 *tl++ = txdr_unsigned(len); 6554 *tl++ = txdr_unsigned(*iomode); 6555 *tl = txdr_unsigned(len); 6556 nfsm_uiombuf(nd, uiop, len); 6557 nrp = dsp->nfsclds_sockp; 6558 if (nrp == NULL) 6559 /* If NULL, use the MDS socket. */ 6560 nrp = &nmp->nm_sockreq; 6561 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6562 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6563 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6564 nd->nd_repstat); 6565 if (error != 0) 6566 return (error); 6567 if (nd->nd_repstat != 0) { 6568 /* 6569 * In case the rpc gets retried, roll 6570 * the uio fileds changed by nfsm_uiombuf() 6571 * back. 6572 */ 6573 uiop->uio_offset -= len; 6574 uiop->uio_resid += len; 6575 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len; 6576 uiop->uio_iov->iov_len += len; 6577 error = nd->nd_repstat; 6578 } else { 6579 if (vers == NFS_VER3) { 6580 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6581 NULL); 6582 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6583 if (error != 0) 6584 goto nfsmout; 6585 } 6586 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6587 rlen = fxdr_unsigned(int, *tl++); 6588 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6589 if (rlen == 0) { 6590 error = NFSERR_IO; 6591 goto nfsmout; 6592 } else if (rlen < len) { 6593 backup = len - rlen; 6594 uiop->uio_iov->iov_base = 6595 (char *)uiop->uio_iov->iov_base - backup; 6596 uiop->uio_iov->iov_len += backup; 6597 uiop->uio_offset -= backup; 6598 uiop->uio_resid += backup; 6599 len = rlen; 6600 } 6601 commit = fxdr_unsigned(int, *tl++); 6602 6603 /* 6604 * Return the lowest commitment level 6605 * obtained by any of the RPCs. 6606 */ 6607 if (committed == NFSWRITE_FILESYNC) 6608 committed = commit; 6609 else if (committed == NFSWRITE_DATASYNC && 6610 commit == NFSWRITE_UNSTABLE) 6611 committed = commit; 6612 if (commit_thru_mds != 0) { 6613 NFSLOCKMNT(nmp); 6614 if (!NFSHASWRITEVERF(nmp)) { 6615 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6616 NFSSETWRITEVERF(nmp); 6617 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF) && 6618 *must_commit != 2) { 6619 *must_commit = 1; 6620 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6621 } 6622 NFSUNLOCKMNT(nmp); 6623 } else { 6624 NFSLOCKDS(dsp); 6625 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6626 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6627 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6628 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) && 6629 *must_commit != 2) { 6630 *must_commit = 1; 6631 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6632 } 6633 NFSUNLOCKDS(dsp); 6634 } 6635 } 6636 nfsmout: 6637 if (nd->nd_mrep != NULL) 6638 m_freem(nd->nd_mrep); 6639 *iomode = committed; 6640 if (nd->nd_repstat != 0 && error == 0) 6641 error = nd->nd_repstat; 6642 return (error); 6643 } 6644 6645 /* 6646 * The actual write RPC done to a DS. 6647 * This variant is called from a separate kernel process for mirrors. 6648 * Any short write is considered an IO error. 6649 */ 6650 static int 6651 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6652 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6653 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6654 struct ucred *cred, NFSPROC_T *p) 6655 { 6656 uint32_t *tl; 6657 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6658 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6659 struct nfsrv_descript nfsd; 6660 struct nfsrv_descript *nd = &nfsd; 6661 struct nfssockreq *nrp; 6662 struct nfsvattr na; 6663 6664 nd->nd_mrep = NULL; 6665 if (vers == 0 || vers == NFS_VER4) { 6666 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6667 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6668 NULL); 6669 vers = NFS_VER4; 6670 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6671 minorvers); 6672 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6673 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6674 } else { 6675 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6676 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6677 NULL); 6678 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6679 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6680 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6681 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6682 } 6683 txdr_hyper(io_off, tl); 6684 tl += 2; 6685 if (vers == NFS_VER3) 6686 *tl++ = txdr_unsigned(len); 6687 *tl++ = txdr_unsigned(*iomode); 6688 *tl = txdr_unsigned(len); 6689 if (len > 0) { 6690 /* Put data in mbuf chain. */ 6691 nd->nd_mb->m_next = m; 6692 } 6693 nrp = dsp->nfsclds_sockp; 6694 if (nrp == NULL) 6695 /* If NULL, use the MDS socket. */ 6696 nrp = &nmp->nm_sockreq; 6697 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6698 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6699 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6700 nd->nd_repstat); 6701 if (error != 0) 6702 return (error); 6703 if (nd->nd_repstat != 0) 6704 error = nd->nd_repstat; 6705 else { 6706 if (vers == NFS_VER3) { 6707 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6708 NULL); 6709 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6710 error); 6711 if (error != 0) 6712 goto nfsmout; 6713 } 6714 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6715 rlen = fxdr_unsigned(int, *tl++); 6716 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6717 rlen); 6718 if (rlen != len) { 6719 error = NFSERR_IO; 6720 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6721 len, rlen); 6722 goto nfsmout; 6723 } 6724 commit = fxdr_unsigned(int, *tl++); 6725 6726 /* 6727 * Return the lowest commitment level 6728 * obtained by any of the RPCs. 6729 */ 6730 if (committed == NFSWRITE_FILESYNC) 6731 committed = commit; 6732 else if (committed == NFSWRITE_DATASYNC && 6733 commit == NFSWRITE_UNSTABLE) 6734 committed = commit; 6735 NFSLOCKDS(dsp); 6736 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6737 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6738 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6739 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) && 6740 *must_commit != 2) { 6741 *must_commit = 1; 6742 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6743 } 6744 NFSUNLOCKDS(dsp); 6745 } 6746 nfsmout: 6747 if (nd->nd_mrep != NULL) 6748 m_freem(nd->nd_mrep); 6749 *iomode = committed; 6750 if (nd->nd_repstat != 0 && error == 0) 6751 error = nd->nd_repstat; 6752 return (error); 6753 } 6754 6755 /* 6756 * Start up the thread that will execute nfsrpc_writedsmir(). 6757 */ 6758 static void 6759 start_writedsmir(void *arg, int pending) 6760 { 6761 struct nfsclwritedsdorpc *drpc; 6762 6763 drpc = (struct nfsclwritedsdorpc *)arg; 6764 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6765 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6766 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6767 drpc->p); 6768 drpc->done = 1; 6769 crfree(drpc->cred); 6770 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6771 } 6772 6773 /* 6774 * Set up the write DS mirror call for the pNFS I/O thread. 6775 */ 6776 static int 6777 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6778 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6779 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6780 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6781 { 6782 int error, ret; 6783 6784 error = 0; 6785 drpc->done = 0; 6786 drpc->vp = vp; 6787 drpc->iomode = *iomode; 6788 drpc->must_commit = *must_commit; 6789 drpc->stateidp = stateidp; 6790 drpc->dsp = dsp; 6791 drpc->off = off; 6792 drpc->len = len; 6793 drpc->fhp = fhp; 6794 drpc->m = m; 6795 drpc->vers = vers; 6796 drpc->minorvers = minorvers; 6797 drpc->cred = crhold(cred); 6798 drpc->p = p; 6799 drpc->inprog = 0; 6800 ret = EIO; 6801 if (nfs_pnfsiothreads != 0) { 6802 ret = nfs_pnfsio(start_writedsmir, drpc); 6803 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6804 } 6805 if (ret != 0) { 6806 error = nfsrpc_writedsmir(vp, iomode, &drpc->must_commit, 6807 stateidp, dsp, off, len, fhp, m, vers, minorvers, cred, p); 6808 crfree(drpc->cred); 6809 } 6810 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6811 return (error); 6812 } 6813 6814 /* 6815 * Free up the nfsclds structure. 6816 */ 6817 void 6818 nfscl_freenfsclds(struct nfsclds *dsp) 6819 { 6820 int i; 6821 6822 if (dsp == NULL) 6823 return; 6824 if (dsp->nfsclds_sockp != NULL) { 6825 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6826 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6827 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6828 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6829 } 6830 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6831 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6832 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6833 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6834 m_freem( 6835 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6836 } 6837 free(dsp, M_NFSCLDS); 6838 } 6839 6840 static enum nfsclds_state 6841 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6842 struct nfsclds **retdspp, uint32_t *sequencep) 6843 { 6844 struct nfsclds *dsp; 6845 int fndseq; 6846 6847 /* 6848 * Search the list of nfsclds structures for one with the same 6849 * server. 6850 */ 6851 fndseq = 0; 6852 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6853 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6854 dsp->nfsclds_servownlen != 0 && 6855 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6856 dsp->nfsclds_servownlen) && 6857 dsp->nfsclds_sess.nfsess_defunct == 0) { 6858 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6859 TAILQ_FIRST(&nmp->nm_sess), dsp, 6860 dsp->nfsclds_flags); 6861 if (fndseq == 0) { 6862 /* Get sequenceid# from first entry. */ 6863 *sequencep = 6864 dsp->nfsclds_sess.nfsess_sequenceid; 6865 fndseq = 1; 6866 } 6867 /* Server major id matches. */ 6868 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6869 *retdspp = dsp; 6870 return (NFSDSP_USETHISSESSION); 6871 } 6872 } 6873 } 6874 if (fndseq != 0) 6875 return (NFSDSP_SEQTHISSESSION); 6876 return (NFSDSP_NOTFOUND); 6877 } 6878 6879 /* 6880 * NFS commit rpc to a NFSv4.1 DS. 6881 */ 6882 static int 6883 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6884 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6885 NFSPROC_T *p) 6886 { 6887 uint32_t *tl; 6888 struct nfsrv_descript nfsd, *nd = &nfsd; 6889 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6890 struct nfssockreq *nrp; 6891 struct nfsvattr na; 6892 int attrflag, error; 6893 6894 nd->nd_mrep = NULL; 6895 if (vers == 0 || vers == NFS_VER4) { 6896 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6897 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6898 NULL); 6899 vers = NFS_VER4; 6900 } else { 6901 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6902 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6903 NULL); 6904 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMIT]); 6905 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMITDS]); 6906 } 6907 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6908 minorvers); 6909 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6910 txdr_hyper(offset, tl); 6911 tl += 2; 6912 *tl = txdr_unsigned(cnt); 6913 nrp = dsp->nfsclds_sockp; 6914 if (nrp == NULL) 6915 /* If NULL, use the MDS socket. */ 6916 nrp = &nmp->nm_sockreq; 6917 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6918 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6919 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6920 nd->nd_repstat); 6921 if (error != 0) 6922 return (error); 6923 if (nd->nd_repstat == 0) { 6924 if (vers == NFS_VER3) { 6925 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6926 NULL); 6927 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6928 if (error != 0) 6929 goto nfsmout; 6930 } 6931 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6932 NFSLOCKDS(dsp); 6933 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6934 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6935 error = NFSERR_STALEWRITEVERF; 6936 } 6937 NFSUNLOCKDS(dsp); 6938 } 6939 nfsmout: 6940 if (error == 0 && nd->nd_repstat != 0) 6941 error = nd->nd_repstat; 6942 m_freem(nd->nd_mrep); 6943 return (error); 6944 } 6945 6946 /* 6947 * Start up the thread that will execute nfsrpc_commitds(). 6948 */ 6949 static void 6950 start_commitds(void *arg, int pending) 6951 { 6952 struct nfsclwritedsdorpc *drpc; 6953 6954 drpc = (struct nfsclwritedsdorpc *)arg; 6955 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6956 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6957 drpc->p); 6958 drpc->done = 1; 6959 crfree(drpc->cred); 6960 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6961 } 6962 6963 /* 6964 * Set up the commit DS mirror call for the pNFS I/O thread. 6965 */ 6966 static int 6967 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6968 struct nfsfh *fhp, int vers, int minorvers, 6969 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6970 { 6971 int error, ret; 6972 6973 error = 0; 6974 drpc->done = 0; 6975 drpc->vp = vp; 6976 drpc->off = offset; 6977 drpc->len = cnt; 6978 drpc->dsp = dsp; 6979 drpc->fhp = fhp; 6980 drpc->vers = vers; 6981 drpc->minorvers = minorvers; 6982 drpc->cred = crhold(cred); 6983 drpc->p = p; 6984 drpc->inprog = 0; 6985 ret = EIO; 6986 if (nfs_pnfsiothreads != 0) { 6987 ret = nfs_pnfsio(start_commitds, drpc); 6988 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6989 } 6990 if (ret != 0) { 6991 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6992 minorvers, cred, p); 6993 crfree(drpc->cred); 6994 } 6995 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6996 return (error); 6997 } 6998 6999 /* 7000 * NFS Advise rpc 7001 */ 7002 int 7003 nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise, 7004 struct ucred *cred, NFSPROC_T *p) 7005 { 7006 u_int32_t *tl; 7007 struct nfsrv_descript nfsd, *nd = &nfsd; 7008 nfsattrbit_t hints; 7009 int error; 7010 7011 NFSZERO_ATTRBIT(&hints); 7012 if (advise == POSIX_FADV_WILLNEED) 7013 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 7014 else if (advise == POSIX_FADV_DONTNEED) 7015 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 7016 else 7017 return (0); 7018 NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp, cred); 7019 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 7020 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER); 7021 txdr_hyper(offset, tl); 7022 tl += 2; 7023 txdr_hyper(cnt, tl); 7024 nfsrv_putattrbit(nd, &hints); 7025 error = nfscl_request(nd, vp, p, cred, NULL); 7026 if (error != 0) 7027 return (error); 7028 if (nd->nd_repstat != 0) 7029 error = nd->nd_repstat; 7030 m_freem(nd->nd_mrep); 7031 return (error); 7032 } 7033 7034 #ifdef notyet 7035 /* 7036 * NFS advise rpc to a NFSv4.2 DS. 7037 */ 7038 static int 7039 nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 7040 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 7041 struct ucred *cred, NFSPROC_T *p) 7042 { 7043 uint32_t *tl; 7044 struct nfsrv_descript nfsd, *nd = &nfsd; 7045 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 7046 struct nfssockreq *nrp; 7047 nfsattrbit_t hints; 7048 int error; 7049 7050 /* For NFS DSs prior to NFSv4.2, just return OK. */ 7051 if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION) 7052 return (0); 7053 NFSZERO_ATTRBIT(&hints); 7054 if (advise == POSIX_FADV_WILLNEED) 7055 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 7056 else if (advise == POSIX_FADV_DONTNEED) 7057 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 7058 else 7059 return (0); 7060 nd->nd_mrep = NULL; 7061 nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh, 7062 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, NULL); 7063 vers = NFS_VER4; 7064 NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers, 7065 minorvers); 7066 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 7067 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 7068 txdr_hyper(offset, tl); 7069 tl += 2; 7070 *tl = txdr_unsigned(cnt); 7071 nfsrv_putattrbit(nd, &hints); 7072 nrp = dsp->nfsclds_sockp; 7073 if (nrp == NULL) 7074 /* If NULL, use the MDS socket. */ 7075 nrp = &nmp->nm_sockreq; 7076 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 7077 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 7078 NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error, 7079 nd->nd_repstat); 7080 if (error != 0) 7081 return (error); 7082 if (nd->nd_repstat != 0) 7083 error = nd->nd_repstat; 7084 m_freem(nd->nd_mrep); 7085 return (error); 7086 } 7087 7088 /* 7089 * Start up the thread that will execute nfsrpc_commitds(). 7090 */ 7091 static void 7092 start_adviseds(void *arg, int pending) 7093 { 7094 struct nfsclwritedsdorpc *drpc; 7095 7096 drpc = (struct nfsclwritedsdorpc *)arg; 7097 drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len, 7098 drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, 7099 drpc->cred, drpc->p); 7100 drpc->done = 1; 7101 crfree(drpc->cred); 7102 NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err); 7103 } 7104 7105 /* 7106 * Set up the advise DS mirror call for the pNFS I/O thread. 7107 */ 7108 static int 7109 nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 7110 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 7111 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 7112 { 7113 int error, ret; 7114 7115 error = 0; 7116 drpc->done = 0; 7117 drpc->vp = vp; 7118 drpc->off = offset; 7119 drpc->len = cnt; 7120 drpc->advise = advise; 7121 drpc->dsp = dsp; 7122 drpc->fhp = fhp; 7123 drpc->vers = vers; 7124 drpc->minorvers = minorvers; 7125 drpc->cred = crhold(cred); 7126 drpc->p = p; 7127 drpc->inprog = 0; 7128 ret = EIO; 7129 if (nfs_pnfsiothreads != 0) { 7130 ret = nfs_pnfsio(start_adviseds, drpc); 7131 NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret); 7132 } 7133 if (ret != 0) { 7134 error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers, 7135 minorvers, cred, p); 7136 crfree(drpc->cred); 7137 } 7138 NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error); 7139 return (error); 7140 } 7141 #endif /* notyet */ 7142 7143 /* 7144 * Do the Allocate operation, retrying for recovery. 7145 */ 7146 int 7147 nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap, 7148 int *attrflagp, struct ucred *cred, NFSPROC_T *p, void *stuff) 7149 { 7150 int error, expireret = 0, retrycnt, nostateid; 7151 uint32_t clidrev = 0; 7152 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 7153 struct nfsfh *nfhp = NULL; 7154 nfsv4stateid_t stateid; 7155 off_t tmp_off; 7156 void *lckp; 7157 7158 if (len < 0) 7159 return (EINVAL); 7160 if (len == 0) 7161 return (0); 7162 tmp_off = off + len; 7163 NFSLOCKMNT(nmp); 7164 if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) { 7165 NFSUNLOCKMNT(nmp); 7166 return (EFBIG); 7167 } 7168 if (nmp->nm_clp != NULL) 7169 clidrev = nmp->nm_clp->nfsc_clientidrev; 7170 NFSUNLOCKMNT(nmp); 7171 nfhp = VTONFS(vp)->n_fhp; 7172 retrycnt = 0; 7173 do { 7174 lckp = NULL; 7175 nostateid = 0; 7176 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 7177 NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp); 7178 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 7179 stateid.other[2] == 0) { 7180 nostateid = 1; 7181 NFSCL_DEBUG(1, "stateid0 in allocate\n"); 7182 } 7183 7184 /* 7185 * Not finding a stateid should probably never happen, 7186 * but just return an error for this case. 7187 */ 7188 if (nostateid != 0) 7189 error = EIO; 7190 else 7191 error = nfsrpc_allocaterpc(vp, off, len, &stateid, 7192 nap, attrflagp, cred, p, stuff); 7193 if (error == NFSERR_STALESTATEID) 7194 nfscl_initiate_recovery(nmp->nm_clp); 7195 if (lckp != NULL) 7196 nfscl_lockderef(lckp); 7197 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 7198 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 7199 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 7200 (void) nfs_catnap(PZERO, error, "nfs_allocate"); 7201 } else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) && 7202 error == NFSERR_BADSTATEID)) && clidrev != 0) { 7203 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 7204 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) { 7205 error = EIO; 7206 } 7207 retrycnt++; 7208 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 7209 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 7210 error == NFSERR_STALEDONTRECOVER || 7211 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 7212 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 7213 expireret == 0 && clidrev != 0 && retrycnt < 4)); 7214 if (error != 0 && retrycnt >= 4) 7215 error = EIO; 7216 return (error); 7217 } 7218 7219 /* 7220 * The allocate RPC. 7221 */ 7222 static int 7223 nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp, 7224 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p, 7225 void *stuff) 7226 { 7227 uint32_t *tl; 7228 int error; 7229 struct nfsrv_descript nfsd; 7230 struct nfsrv_descript *nd = &nfsd; 7231 nfsattrbit_t attrbits; 7232 7233 *attrflagp = 0; 7234 NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp, cred); 7235 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 7236 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 7237 txdr_hyper(off, tl); tl += 2; 7238 txdr_hyper(len, tl); tl += 2; 7239 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7240 NFSGETATTR_ATTRBIT(&attrbits); 7241 nfsrv_putattrbit(nd, &attrbits); 7242 error = nfscl_request(nd, vp, p, cred, stuff); 7243 if (error != 0) 7244 return (error); 7245 if (nd->nd_repstat == 0) { 7246 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7247 error = nfsm_loadattr(nd, nap); 7248 if (error == 0) 7249 *attrflagp = NFS_LATTR_NOSHRINK; 7250 } else 7251 error = nd->nd_repstat; 7252 nfsmout: 7253 m_freem(nd->nd_mrep); 7254 return (error); 7255 } 7256 7257 /* 7258 * Set up the XDR arguments for the LayoutGet operation. 7259 */ 7260 static void 7261 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 7262 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 7263 int layoutlen, int usecurstateid) 7264 { 7265 uint32_t *tl; 7266 7267 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 7268 NFSX_STATEID); 7269 *tl++ = newnfs_false; /* Don't signal availability. */ 7270 *tl++ = txdr_unsigned(layouttype); 7271 *tl++ = txdr_unsigned(iomode); 7272 txdr_hyper(offset, tl); 7273 tl += 2; 7274 txdr_hyper(len, tl); 7275 tl += 2; 7276 txdr_hyper(minlen, tl); 7277 tl += 2; 7278 if (usecurstateid != 0) { 7279 /* Special stateid for Current stateid. */ 7280 *tl++ = txdr_unsigned(1); 7281 *tl++ = 0; 7282 *tl++ = 0; 7283 *tl++ = 0; 7284 } else { 7285 *tl++ = txdr_unsigned(stateidp->seqid); 7286 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 7287 *tl++ = stateidp->other[0]; 7288 *tl++ = stateidp->other[1]; 7289 *tl++ = stateidp->other[2]; 7290 } 7291 *tl = txdr_unsigned(layoutlen); 7292 } 7293 7294 /* 7295 * Parse the reply for a successful LayoutGet operation. 7296 */ 7297 static int 7298 nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd, 7299 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp) 7300 { 7301 uint32_t *tl; 7302 struct nfsclflayout *flp, *prevflp, *tflp; 7303 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 7304 int m, mirrorcnt; 7305 uint64_t retlen, off; 7306 struct nfsfh *nfhp; 7307 uint8_t *cp; 7308 uid_t user; 7309 gid_t grp; 7310 7311 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 7312 error = 0; 7313 flp = NULL; 7314 gotiomode = -1; 7315 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 7316 if (*tl++ != 0) 7317 *retonclosep = 1; 7318 else 7319 *retonclosep = 0; 7320 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 7321 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 7322 (int)stateidp->seqid); 7323 stateidp->other[0] = *tl++; 7324 stateidp->other[1] = *tl++; 7325 stateidp->other[2] = *tl++; 7326 cnt = fxdr_unsigned(int, *tl); 7327 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 7328 if (cnt <= 0 || cnt > 10000) { 7329 /* Don't accept more than 10000 layouts in reply. */ 7330 error = NFSERR_BADXDR; 7331 goto nfsmout; 7332 } 7333 for (i = 0; i < cnt; i++) { 7334 /* Dissect to the layout type. */ 7335 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 7336 3 * NFSX_UNSIGNED); 7337 off = fxdr_hyper(tl); tl += 2; 7338 retlen = fxdr_hyper(tl); tl += 2; 7339 iomode = fxdr_unsigned(int, *tl++); 7340 laytype = fxdr_unsigned(int, *tl); 7341 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 7342 (uintmax_t)off, (uintmax_t)retlen, iomode); 7343 /* Ignore length of layout body for now. */ 7344 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 7345 /* Parse the File layout up to fhcnt. */ 7346 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 7347 NFSX_HYPER + NFSX_V4DEVICEID); 7348 fhcnt = fxdr_unsigned(int, *(tl + 4 + 7349 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 7350 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7351 if (fhcnt < 0 || fhcnt > 100) { 7352 /* Don't accept more than 100 file handles. */ 7353 error = NFSERR_BADXDR; 7354 goto nfsmout; 7355 } 7356 if (fhcnt > 0) 7357 flp = malloc(sizeof(*flp) + fhcnt * 7358 sizeof(struct nfsfh *), M_NFSFLAYOUT, 7359 M_WAITOK); 7360 else 7361 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 7362 M_WAITOK); 7363 flp->nfsfl_flags = NFSFL_FILE; 7364 flp->nfsfl_fhcnt = 0; 7365 flp->nfsfl_devp = NULL; 7366 flp->nfsfl_off = off; 7367 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7368 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7369 else 7370 flp->nfsfl_end = flp->nfsfl_off + retlen; 7371 flp->nfsfl_iomode = iomode; 7372 if (gotiomode == -1) 7373 gotiomode = flp->nfsfl_iomode; 7374 /* Ignore layout body length for now. */ 7375 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 7376 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 7377 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 7378 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 7379 mtx_lock(&nmp->nm_mtx); 7380 if (nmp->nm_minorvers > 1 && (flp->nfsfl_util & 7381 NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0) 7382 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7383 mtx_unlock(&nmp->nm_mtx); 7384 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 7385 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 7386 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 7387 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 7388 for (j = 0; j < fhcnt; j++) { 7389 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7390 nfhlen = fxdr_unsigned(int, *tl); 7391 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 7392 error = NFSERR_BADXDR; 7393 goto nfsmout; 7394 } 7395 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 7396 M_NFSFH, M_WAITOK); 7397 flp->nfsfl_fh[j] = nfhp; 7398 flp->nfsfl_fhcnt++; 7399 nfhp->nfh_len = nfhlen; 7400 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 7401 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 7402 } 7403 } else if (laytype == NFSLAYOUT_FLEXFILE) { 7404 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 7405 NFSX_HYPER); 7406 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 7407 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 7408 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 7409 error = NFSERR_BADXDR; 7410 goto nfsmout; 7411 } 7412 flp = malloc(sizeof(*flp) + mirrorcnt * 7413 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 7414 flp->nfsfl_flags = NFSFL_FLEXFILE; 7415 flp->nfsfl_mirrorcnt = mirrorcnt; 7416 for (j = 0; j < mirrorcnt; j++) 7417 flp->nfsfl_ffm[j].devp = NULL; 7418 flp->nfsfl_off = off; 7419 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7420 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7421 else 7422 flp->nfsfl_end = flp->nfsfl_off + retlen; 7423 flp->nfsfl_iomode = iomode; 7424 if (gotiomode == -1) 7425 gotiomode = flp->nfsfl_iomode; 7426 flp->nfsfl_stripeunit = fxdr_hyper(tl); 7427 NFSCL_DEBUG(4, "stripeunit=%ju\n", 7428 (uintmax_t)flp->nfsfl_stripeunit); 7429 for (j = 0; j < mirrorcnt; j++) { 7430 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7431 k = fxdr_unsigned(int, *tl); 7432 if (k < 1 || k > 128) { 7433 error = NFSERR_BADXDR; 7434 goto nfsmout; 7435 } 7436 NFSCL_DEBUG(4, "servercnt=%d\n", k); 7437 for (l = 0; l < k; l++) { 7438 NFSM_DISSECT(tl, uint32_t *, 7439 NFSX_V4DEVICEID + NFSX_STATEID + 7440 2 * NFSX_UNSIGNED); 7441 if (l == 0) { 7442 /* Just use the first server. */ 7443 NFSBCOPY(tl, 7444 flp->nfsfl_ffm[j].dev, 7445 NFSX_V4DEVICEID); 7446 tl += (NFSX_V4DEVICEID / 7447 NFSX_UNSIGNED); 7448 tl++; 7449 flp->nfsfl_ffm[j].st.seqid = 7450 *tl++; 7451 flp->nfsfl_ffm[j].st.other[0] = 7452 *tl++; 7453 flp->nfsfl_ffm[j].st.other[1] = 7454 *tl++; 7455 flp->nfsfl_ffm[j].st.other[2] = 7456 *tl++; 7457 NFSCL_DEBUG(4, "st.seqid=%u " 7458 "st.o0=0x%x st.o1=0x%x " 7459 "st.o2=0x%x\n", 7460 flp->nfsfl_ffm[j].st.seqid, 7461 flp->nfsfl_ffm[j].st.other[0], 7462 flp->nfsfl_ffm[j].st.other[1], 7463 flp->nfsfl_ffm[j].st.other[2]); 7464 } else 7465 tl += ((NFSX_V4DEVICEID + 7466 NFSX_STATEID + 7467 NFSX_UNSIGNED) / 7468 NFSX_UNSIGNED); 7469 fhcnt = fxdr_unsigned(int, *tl); 7470 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7471 if (fhcnt < 1 || 7472 fhcnt > NFSDEV_MAXVERS) { 7473 error = NFSERR_BADXDR; 7474 goto nfsmout; 7475 } 7476 for (m = 0; m < fhcnt; m++) { 7477 NFSM_DISSECT(tl, uint32_t *, 7478 NFSX_UNSIGNED); 7479 nfhlen = fxdr_unsigned(int, 7480 *tl); 7481 NFSCL_DEBUG(4, "nfhlen=%d\n", 7482 nfhlen); 7483 if (nfhlen <= 0 || nfhlen > 7484 NFSX_V4FHMAX) { 7485 error = NFSERR_BADXDR; 7486 goto nfsmout; 7487 } 7488 NFSM_DISSECT(cp, uint8_t *, 7489 NFSM_RNDUP(nfhlen)); 7490 if (l == 0) { 7491 flp->nfsfl_ffm[j].fhcnt 7492 = fhcnt; 7493 nfhp = malloc( 7494 sizeof(*nfhp) + 7495 nfhlen - 1, M_NFSFH, 7496 M_WAITOK); 7497 flp->nfsfl_ffm[j].fh[m] 7498 = nfhp; 7499 nfhp->nfh_len = nfhlen; 7500 NFSBCOPY(cp, 7501 nfhp->nfh_fh, 7502 nfhlen); 7503 NFSCL_DEBUG(4, 7504 "got fh\n"); 7505 } 7506 } 7507 /* Now, get the ffsd_user/ffds_group. */ 7508 error = nfsrv_parseug(nd, 0, &user, 7509 &grp, curthread); 7510 NFSCL_DEBUG(4, "after parseu=%d\n", 7511 error); 7512 if (error == 0) 7513 error = nfsrv_parseug(nd, 1, 7514 &user, &grp, curthread); 7515 NFSCL_DEBUG(4, "aft parseg=%d\n", 7516 grp); 7517 if (error != 0) 7518 goto nfsmout; 7519 NFSCL_DEBUG(4, "user=%d group=%d\n", 7520 user, grp); 7521 if (l == 0) { 7522 flp->nfsfl_ffm[j].user = user; 7523 flp->nfsfl_ffm[j].group = grp; 7524 NFSCL_DEBUG(4, 7525 "usr=%d grp=%d\n", user, 7526 grp); 7527 } 7528 } 7529 } 7530 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7531 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 7532 #ifdef notnow 7533 /* 7534 * At this time, there is no flag. 7535 * NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be 7536 * added, or it may never exist? 7537 */ 7538 mtx_lock(&nmp->nm_mtx); 7539 if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags & 7540 NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0) 7541 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7542 mtx_unlock(&nmp->nm_mtx); 7543 #endif 7544 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 7545 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 7546 flp->nfsfl_fflags, flp->nfsfl_statshint); 7547 } else { 7548 error = NFSERR_BADXDR; 7549 goto nfsmout; 7550 } 7551 if (flp->nfsfl_iomode == gotiomode) { 7552 /* Keep the list in increasing offset order. */ 7553 tflp = LIST_FIRST(flhp); 7554 prevflp = NULL; 7555 while (tflp != NULL && 7556 tflp->nfsfl_off < flp->nfsfl_off) { 7557 prevflp = tflp; 7558 tflp = LIST_NEXT(tflp, nfsfl_list); 7559 } 7560 if (prevflp == NULL) 7561 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 7562 else 7563 LIST_INSERT_AFTER(prevflp, flp, 7564 nfsfl_list); 7565 NFSCL_DEBUG(4, "flp inserted\n"); 7566 } else { 7567 printf("nfscl_layoutget(): got wrong iomode\n"); 7568 nfscl_freeflayout(flp); 7569 } 7570 flp = NULL; 7571 } 7572 nfsmout: 7573 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 7574 if (error != 0 && flp != NULL) 7575 nfscl_freeflayout(flp); 7576 return (error); 7577 } 7578 7579 /* 7580 * Parse a user/group digit string. 7581 */ 7582 static int 7583 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 7584 NFSPROC_T *p) 7585 { 7586 uint32_t *tl; 7587 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 7588 uint32_t len = 0; 7589 int error = 0; 7590 7591 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7592 len = fxdr_unsigned(uint32_t, *tl); 7593 str = NULL; 7594 if (len > NFSV4_OPAQUELIMIT) { 7595 error = NFSERR_BADXDR; 7596 goto nfsmout; 7597 } 7598 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 7599 if (len == 0) { 7600 if (dogrp != 0) 7601 *gidp = GID_NOGROUP; 7602 else 7603 *uidp = UID_NOBODY; 7604 return (0); 7605 } 7606 if (len > NFSV4_SMALLSTR) 7607 str = malloc(len + 1, M_TEMP, M_WAITOK); 7608 else 7609 str = str0; 7610 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 7611 NFSBCOPY(cp, str, len); 7612 str[len] = '\0'; 7613 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 7614 if (dogrp != 0) 7615 error = nfsv4_strtogid(nd, str, len, gidp); 7616 else 7617 error = nfsv4_strtouid(nd, str, len, uidp); 7618 nfsmout: 7619 if (len > NFSV4_SMALLSTR) 7620 free(str, M_TEMP); 7621 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 7622 return (error); 7623 } 7624 7625 /* 7626 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 7627 * so that it does both an Open and a Layoutget. 7628 */ 7629 static int 7630 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7631 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7632 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7633 struct ucred *cred, NFSPROC_T *p) 7634 { 7635 struct nfscllayout *lyp; 7636 struct nfsclflayout *flp; 7637 struct nfsclflayouthead flh; 7638 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 7639 int layouttype, laystat; 7640 nfsv4stateid_t stateid; 7641 struct nfsclsession *tsep; 7642 7643 error = 0; 7644 if (NFSHASFLEXFILE(nmp)) 7645 layouttype = NFSLAYOUT_FLEXFILE; 7646 else 7647 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7648 /* 7649 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7650 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7651 * flp == NULL. 7652 */ 7653 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, mode, &flp, 7654 &recalled); 7655 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7656 if (lyp == NULL) 7657 islocked = 0; 7658 else if (flp != NULL) 7659 islocked = 1; 7660 else 7661 islocked = 2; 7662 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7663 LIST_INIT(&flh); 7664 tsep = nfsmnt_mdssession(nmp); 7665 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7666 3 * NFSX_UNSIGNED); 7667 if (lyp == NULL) 7668 usecurstateid = 1; 7669 else { 7670 usecurstateid = 0; 7671 stateid.seqid = lyp->nfsly_stateid.seqid; 7672 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7673 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7674 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7675 } 7676 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7677 newfhp, newfhlen, mode, op, name, namelen, 7678 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7679 &retonclose, &flh, &laystat, cred, p); 7680 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7681 laystat, error); 7682 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7683 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7684 &islocked, cred, p); 7685 } else 7686 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7687 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7688 if (islocked == 2) 7689 nfscl_rellayout(lyp, 1); 7690 else if (islocked == 1) 7691 nfscl_rellayout(lyp, 0); 7692 return (error); 7693 } 7694 7695 /* 7696 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7697 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7698 * handled by nfsrpc_openrpc(). 7699 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7700 * can be NULL. 7701 */ 7702 static int 7703 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7704 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7705 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7706 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7707 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7708 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7709 { 7710 uint32_t *tl; 7711 struct nfsrv_descript nfsd, *nd = &nfsd; 7712 struct nfscldeleg *ndp = NULL; 7713 struct nfsvattr nfsva; 7714 struct nfsclsession *tsep; 7715 uint32_t rflags, deleg; 7716 nfsattrbit_t attrbits; 7717 int error, ret, acesize, limitby, iomode; 7718 7719 *dpp = NULL; 7720 *laystatp = ENXIO; 7721 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7722 0, 0, cred); 7723 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7724 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7725 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7726 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7727 tsep = nfsmnt_mdssession(nmp); 7728 *tl++ = tsep->nfsess_clientid.lval[0]; 7729 *tl = tsep->nfsess_clientid.lval[1]; 7730 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7731 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7732 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7733 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7734 nfsm_strtom(nd, name, namelen); 7735 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7736 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7737 NFSZERO_ATTRBIT(&attrbits); 7738 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7739 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7740 nfsrv_putattrbit(nd, &attrbits); 7741 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7742 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7743 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7744 iomode = NFSLAYOUTIOMODE_RW; 7745 else 7746 iomode = NFSLAYOUTIOMODE_READ; 7747 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7748 layouttype, layoutlen, usecurstateid); 7749 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7750 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7751 if (error != 0) 7752 return (error); 7753 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7754 if (nd->nd_repstat != 0) 7755 *laystatp = nd->nd_repstat; 7756 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7757 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7758 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7759 6 * NFSX_UNSIGNED); 7760 op->nfso_stateid.seqid = *tl++; 7761 op->nfso_stateid.other[0] = *tl++; 7762 op->nfso_stateid.other[1] = *tl++; 7763 op->nfso_stateid.other[2] = *tl; 7764 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7765 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7766 if (error != 0) 7767 goto nfsmout; 7768 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7769 deleg = fxdr_unsigned(u_int32_t, *tl); 7770 if (deleg == NFSV4OPEN_DELEGATEREAD || 7771 deleg == NFSV4OPEN_DELEGATEWRITE) { 7772 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7773 NFSCLFLAGS_FIRSTDELEG)) 7774 op->nfso_own->nfsow_clp->nfsc_flags |= 7775 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7776 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7777 M_NFSCLDELEG, M_WAITOK); 7778 LIST_INIT(&ndp->nfsdl_owner); 7779 LIST_INIT(&ndp->nfsdl_lock); 7780 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7781 ndp->nfsdl_fhlen = newfhlen; 7782 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7783 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7784 nfscl_lockinit(&ndp->nfsdl_rwlock); 7785 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7786 NFSX_UNSIGNED); 7787 ndp->nfsdl_stateid.seqid = *tl++; 7788 ndp->nfsdl_stateid.other[0] = *tl++; 7789 ndp->nfsdl_stateid.other[1] = *tl++; 7790 ndp->nfsdl_stateid.other[2] = *tl++; 7791 ret = fxdr_unsigned(int, *tl); 7792 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7793 ndp->nfsdl_flags = NFSCLDL_WRITE; 7794 /* 7795 * Indicates how much the file can grow. 7796 */ 7797 NFSM_DISSECT(tl, u_int32_t *, 7798 3 * NFSX_UNSIGNED); 7799 limitby = fxdr_unsigned(int, *tl++); 7800 switch (limitby) { 7801 case NFSV4OPEN_LIMITSIZE: 7802 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7803 break; 7804 case NFSV4OPEN_LIMITBLOCKS: 7805 ndp->nfsdl_sizelimit = 7806 fxdr_unsigned(u_int64_t, *tl++); 7807 ndp->nfsdl_sizelimit *= 7808 fxdr_unsigned(u_int64_t, *tl); 7809 break; 7810 default: 7811 error = NFSERR_BADXDR; 7812 goto nfsmout; 7813 }; 7814 } else 7815 ndp->nfsdl_flags = NFSCLDL_READ; 7816 if (ret != 0) 7817 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7818 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, false, 7819 &ret, &acesize, p); 7820 if (error != 0) 7821 goto nfsmout; 7822 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7823 error = NFSERR_BADXDR; 7824 goto nfsmout; 7825 } 7826 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7827 nfscl_assumeposixlocks) 7828 op->nfso_posixlock = 1; 7829 else 7830 op->nfso_posixlock = 0; 7831 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7832 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7833 if (*++tl == 0) { 7834 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7835 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7836 NULL, NULL, NULL, p, cred); 7837 if (error != 0) 7838 goto nfsmout; 7839 if (ndp != NULL) { 7840 ndp->nfsdl_change = nfsva.na_filerev; 7841 ndp->nfsdl_modtime = nfsva.na_mtime; 7842 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7843 *dpp = ndp; 7844 ndp = NULL; 7845 } 7846 /* 7847 * At this point, the Open has succeeded, so set 7848 * nd_repstat = NFS_OK. If the Layoutget failed, 7849 * this function just won't return a layout. 7850 */ 7851 if (nd->nd_repstat == 0) { 7852 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7853 *laystatp = fxdr_unsigned(int, *++tl); 7854 if (*laystatp == 0) { 7855 error = nfsrv_parselayoutget(nmp, nd, 7856 stateidp, retonclosep, flhp); 7857 if (error != 0) 7858 *laystatp = error; 7859 } 7860 } else 7861 nd->nd_repstat = 0; /* Return 0 for Open. */ 7862 } 7863 } 7864 if (nd->nd_repstat != 0 && error == 0) 7865 error = nd->nd_repstat; 7866 nfsmout: 7867 free(ndp, M_NFSCLDELEG); 7868 m_freem(nd->nd_mrep); 7869 return (error); 7870 } 7871 7872 /* 7873 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7874 * Used only for mounts with pNFS enabled. 7875 */ 7876 static int 7877 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7878 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7879 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7880 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7881 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7882 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7883 struct nfsclflayouthead *flhp, int *laystatp) 7884 { 7885 uint32_t *tl; 7886 int error = 0, deleg, newone, ret, acesize, limitby; 7887 struct nfsrv_descript nfsd, *nd = &nfsd; 7888 struct nfsclopen *op; 7889 struct nfscldeleg *dp = NULL; 7890 struct nfsnode *np; 7891 struct nfsfh *nfhp; 7892 struct nfsclsession *tsep; 7893 nfsattrbit_t attrbits; 7894 nfsv4stateid_t stateid; 7895 struct nfsmount *nmp; 7896 7897 nmp = VFSTONFS(dvp->v_mount); 7898 np = VTONFS(dvp); 7899 *laystatp = ENXIO; 7900 *unlockedp = 0; 7901 *nfhpp = NULL; 7902 *dpp = NULL; 7903 *attrflagp = 0; 7904 *dattrflagp = 0; 7905 if (namelen > NFS_MAXNAMLEN) 7906 return (ENAMETOOLONG); 7907 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp, cred); 7908 /* 7909 * For V4, this is actually an Open op. 7910 */ 7911 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7912 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7913 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7914 NFSV4OPEN_ACCESSREAD); 7915 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7916 tsep = nfsmnt_mdssession(nmp); 7917 *tl++ = tsep->nfsess_clientid.lval[0]; 7918 *tl = tsep->nfsess_clientid.lval[1]; 7919 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7920 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7921 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7922 if ((fmode & O_EXCL) != 0) { 7923 if (NFSHASSESSPERSIST(nmp)) { 7924 /* Use GUARDED for persistent sessions. */ 7925 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7926 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7927 } else { 7928 /* Otherwise, use EXCLUSIVE4_1. */ 7929 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7930 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7931 *tl++ = cverf.lval[0]; 7932 *tl = cverf.lval[1]; 7933 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7934 } 7935 } else { 7936 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7937 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7938 } 7939 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7940 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7941 nfsm_strtom(nd, name, namelen); 7942 /* Get the new file's handle and attributes, plus save the FH. */ 7943 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7944 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7945 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7946 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7947 NFSGETATTR_ATTRBIT(&attrbits); 7948 nfsrv_putattrbit(nd, &attrbits); 7949 /* Get the directory's post-op attributes. */ 7950 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7951 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7952 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7953 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7954 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7955 nfsrv_putattrbit(nd, &attrbits); 7956 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7957 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7958 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7959 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7960 layouttype, layoutlen, usecurstateid); 7961 error = nfscl_request(nd, dvp, p, cred, dstuff); 7962 if (error != 0) 7963 return (error); 7964 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7965 error); 7966 if (nd->nd_repstat != 0) 7967 *laystatp = nd->nd_repstat; 7968 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7969 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7970 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7971 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7972 6 * NFSX_UNSIGNED); 7973 stateid.seqid = *tl++; 7974 stateid.other[0] = *tl++; 7975 stateid.other[1] = *tl++; 7976 stateid.other[2] = *tl; 7977 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7978 if (error != 0) 7979 goto nfsmout; 7980 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7981 deleg = fxdr_unsigned(int, *tl); 7982 if (deleg == NFSV4OPEN_DELEGATEREAD || 7983 deleg == NFSV4OPEN_DELEGATEWRITE) { 7984 if (!(owp->nfsow_clp->nfsc_flags & 7985 NFSCLFLAGS_FIRSTDELEG)) 7986 owp->nfsow_clp->nfsc_flags |= 7987 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7988 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7989 M_NFSCLDELEG, M_WAITOK); 7990 LIST_INIT(&dp->nfsdl_owner); 7991 LIST_INIT(&dp->nfsdl_lock); 7992 dp->nfsdl_clp = owp->nfsow_clp; 7993 newnfs_copyincred(cred, &dp->nfsdl_cred); 7994 nfscl_lockinit(&dp->nfsdl_rwlock); 7995 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7996 NFSX_UNSIGNED); 7997 dp->nfsdl_stateid.seqid = *tl++; 7998 dp->nfsdl_stateid.other[0] = *tl++; 7999 dp->nfsdl_stateid.other[1] = *tl++; 8000 dp->nfsdl_stateid.other[2] = *tl++; 8001 ret = fxdr_unsigned(int, *tl); 8002 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 8003 dp->nfsdl_flags = NFSCLDL_WRITE; 8004 /* 8005 * Indicates how much the file can grow. 8006 */ 8007 NFSM_DISSECT(tl, u_int32_t *, 8008 3 * NFSX_UNSIGNED); 8009 limitby = fxdr_unsigned(int, *tl++); 8010 switch (limitby) { 8011 case NFSV4OPEN_LIMITSIZE: 8012 dp->nfsdl_sizelimit = fxdr_hyper(tl); 8013 break; 8014 case NFSV4OPEN_LIMITBLOCKS: 8015 dp->nfsdl_sizelimit = 8016 fxdr_unsigned(u_int64_t, *tl++); 8017 dp->nfsdl_sizelimit *= 8018 fxdr_unsigned(u_int64_t, *tl); 8019 break; 8020 default: 8021 error = NFSERR_BADXDR; 8022 goto nfsmout; 8023 }; 8024 } else { 8025 dp->nfsdl_flags = NFSCLDL_READ; 8026 } 8027 if (ret != 0) 8028 dp->nfsdl_flags |= NFSCLDL_RECALL; 8029 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, false, 8030 &ret, &acesize, p); 8031 if (error != 0) 8032 goto nfsmout; 8033 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 8034 error = NFSERR_BADXDR; 8035 goto nfsmout; 8036 } 8037 8038 /* Now, we should have the status for the SaveFH. */ 8039 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8040 if (*++tl == 0) { 8041 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 8042 /* 8043 * Now, process the GetFH and Getattr for the newly 8044 * created file. nfscl_mtofh() will set 8045 * ND_NOMOREDATA if these weren't successful. 8046 */ 8047 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 8048 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 8049 if (error != 0) 8050 goto nfsmout; 8051 } else 8052 nd->nd_flag |= ND_NOMOREDATA; 8053 /* Now we have the PutFH and Getattr for the directory. */ 8054 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8055 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8056 if (*++tl != 0) 8057 nd->nd_flag |= ND_NOMOREDATA; 8058 else { 8059 NFSM_DISSECT(tl, uint32_t *, 2 * 8060 NFSX_UNSIGNED); 8061 if (*++tl != 0) 8062 nd->nd_flag |= ND_NOMOREDATA; 8063 } 8064 } 8065 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8066 /* Load the directory attributes. */ 8067 error = nfsm_loadattr(nd, dnap); 8068 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 8069 if (error != 0) 8070 goto nfsmout; 8071 *dattrflagp = 1; 8072 if (dp != NULL && *attrflagp != 0) { 8073 dp->nfsdl_change = nnap->na_filerev; 8074 dp->nfsdl_modtime = nnap->na_mtime; 8075 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 8076 } 8077 /* 8078 * We can now complete the Open state. 8079 */ 8080 nfhp = *nfhpp; 8081 if (dp != NULL) { 8082 dp->nfsdl_fhlen = nfhp->nfh_len; 8083 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 8084 nfhp->nfh_len); 8085 } 8086 /* 8087 * Get an Open structure that will be 8088 * attached to the OpenOwner, acquired already. 8089 */ 8090 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 8091 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 8092 cred, p, NULL, &op, &newone, NULL, 0, false); 8093 if (error != 0) 8094 goto nfsmout; 8095 op->nfso_stateid = stateid; 8096 newnfs_copyincred(cred, &op->nfso_cred); 8097 8098 nfscl_openrelease(nmp, op, error, newone); 8099 *unlockedp = 1; 8100 8101 /* Now, handle the RestoreFH and LayoutGet. */ 8102 if (nd->nd_repstat == 0) { 8103 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 8104 *laystatp = fxdr_unsigned(int, *(tl + 3)); 8105 if (*laystatp == 0) { 8106 error = nfsrv_parselayoutget(nmp, nd, 8107 stateidp, retonclosep, flhp); 8108 if (error != 0) 8109 *laystatp = error; 8110 } 8111 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 8112 error); 8113 } else 8114 nd->nd_repstat = 0; 8115 } 8116 } 8117 if (nd->nd_repstat != 0 && error == 0) 8118 error = nd->nd_repstat; 8119 if (error == NFSERR_STALECLIENTID) 8120 nfscl_initiate_recovery(owp->nfsow_clp); 8121 nfsmout: 8122 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 8123 if (error == 0) 8124 *dpp = dp; 8125 else 8126 free(dp, M_NFSCLDELEG); 8127 m_freem(nd->nd_mrep); 8128 return (error); 8129 } 8130 8131 /* 8132 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 8133 */ 8134 static int 8135 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 8136 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 8137 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 8138 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 8139 int *dattrflagp, void *dstuff, int *unlockedp) 8140 { 8141 struct nfscllayout *lyp; 8142 struct nfsclflayouthead flh; 8143 struct nfsfh *nfhp; 8144 struct nfsclsession *tsep; 8145 struct nfsmount *nmp; 8146 nfsv4stateid_t stateid; 8147 int error, layoutlen, layouttype, retonclose, laystat; 8148 8149 error = 0; 8150 nmp = VFSTONFS(dvp->v_mount); 8151 if (NFSHASFLEXFILE(nmp)) 8152 layouttype = NFSLAYOUT_FLEXFILE; 8153 else 8154 layouttype = NFSLAYOUT_NFSV4_1_FILES; 8155 LIST_INIT(&flh); 8156 tsep = nfsmnt_mdssession(nmp); 8157 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 8158 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 8159 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 8160 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 8161 &flh, &laystat); 8162 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 8163 laystat, error); 8164 lyp = NULL; 8165 if (laystat == 0) { 8166 nfhp = *nfhpp; 8167 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 8168 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 8169 layouttype, laystat, NULL, cred, p); 8170 } else 8171 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 8172 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 8173 cred, p); 8174 if (laystat == 0) 8175 nfscl_rellayout(lyp, 0); 8176 return (error); 8177 } 8178 8179 /* 8180 * Process the results of a layoutget() operation. 8181 */ 8182 static int 8183 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 8184 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 8185 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 8186 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 8187 { 8188 struct nfsclflayout *tflp; 8189 struct nfscldevinfo *dip; 8190 uint8_t *dev; 8191 int i, mirrorcnt; 8192 8193 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 8194 NFSLOCKMNT(nmp); 8195 if (!NFSHASFLEXFILE(nmp)) { 8196 /* Switch to using Flex File Layout. */ 8197 nmp->nm_state |= NFSSTA_FLEXFILE; 8198 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 8199 /* Disable pNFS. */ 8200 NFSCL_DEBUG(1, "disable PNFS\n"); 8201 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 8202 } 8203 NFSUNLOCKMNT(nmp); 8204 } 8205 if (laystat == 0) { 8206 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 8207 LIST_FOREACH(tflp, flhp, nfsfl_list) { 8208 if (layouttype == NFSLAYOUT_FLEXFILE) 8209 mirrorcnt = tflp->nfsfl_mirrorcnt; 8210 else 8211 mirrorcnt = 1; 8212 for (i = 0; i < mirrorcnt; i++) { 8213 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp); 8214 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 8215 if (laystat != 0) { 8216 if (layouttype == NFSLAYOUT_FLEXFILE) 8217 dev = tflp->nfsfl_ffm[i].dev; 8218 else 8219 dev = tflp->nfsfl_dev; 8220 laystat = nfsrpc_getdeviceinfo(nmp, dev, 8221 layouttype, notifybit, &dip, cred, 8222 p); 8223 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 8224 laystat); 8225 if (laystat != 0) 8226 goto out; 8227 laystat = nfscl_adddevinfo(nmp, dip, i, 8228 tflp); 8229 if (laystat != 0) 8230 printf("nfsrpc_layoutgetresout" 8231 ": cannot add\n"); 8232 } 8233 } 8234 } 8235 } 8236 out: 8237 if (laystat == 0) { 8238 /* 8239 * nfscl_layout() always returns with the nfsly_lock 8240 * set to a refcnt (shared lock). 8241 * Passing in dvp is sufficient, since it is only used to 8242 * get the fsid for the file system. 8243 */ 8244 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 8245 layouttype, retonclose, flhp, lypp, cred, p); 8246 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 8247 laystat); 8248 if (laystat == 0 && islockedp != NULL) 8249 *islockedp = 1; 8250 } 8251 return (laystat); 8252 } 8253 8254 /* 8255 * nfs copy_file_range operation. 8256 */ 8257 int 8258 nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp, 8259 off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp, 8260 struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap, 8261 struct ucred *cred, bool consecutive, bool *must_commitp) 8262 { 8263 int commit, error, expireret = 0, retrycnt; 8264 u_int32_t clidrev = 0; 8265 struct nfsmount *nmp = VFSTONFS(invp->v_mount); 8266 struct nfsfh *innfhp = NULL, *outnfhp = NULL; 8267 nfsv4stateid_t instateid, outstateid; 8268 void *inlckp, *outlckp; 8269 8270 if (nmp->nm_clp != NULL) 8271 clidrev = nmp->nm_clp->nfsc_clientidrev; 8272 innfhp = VTONFS(invp)->n_fhp; 8273 outnfhp = VTONFS(outvp)->n_fhp; 8274 retrycnt = 0; 8275 do { 8276 /* Get both stateids. */ 8277 inlckp = NULL; 8278 nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len, 8279 NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid, 8280 &inlckp); 8281 outlckp = NULL; 8282 nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len, 8283 NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid, 8284 &outlckp); 8285 8286 error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp, 8287 &instateid, &outstateid, innap, inattrflagp, outnap, 8288 outattrflagp, consecutive, &commit, cred, curthread); 8289 if (error == 0) { 8290 if (commit != NFSWRITE_FILESYNC) 8291 *must_commitp = true; 8292 *inoffp += *lenp; 8293 *outoffp += *lenp; 8294 } else if (error == NFSERR_STALESTATEID) 8295 nfscl_initiate_recovery(nmp->nm_clp); 8296 if (inlckp != NULL) 8297 nfscl_lockderef(inlckp); 8298 if (outlckp != NULL) 8299 nfscl_lockderef(outlckp); 8300 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8301 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8302 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8303 (void) nfs_catnap(PZERO, error, "nfs_cfr"); 8304 } else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) && 8305 error == NFSERR_BADSTATEID)) && clidrev != 0) { 8306 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8307 curthread); 8308 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) { 8309 error = EIO; 8310 } 8311 retrycnt++; 8312 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 8313 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8314 error == NFSERR_STALEDONTRECOVER || 8315 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8316 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8317 expireret == 0 && clidrev != 0 && retrycnt < 4)); 8318 if (error != 0 && (retrycnt >= 4 || 8319 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8320 error == NFSERR_STALEDONTRECOVER)) 8321 error = EIO; 8322 return (error); 8323 } 8324 8325 /* 8326 * The copy RPC. 8327 */ 8328 static int 8329 nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff, 8330 size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp, 8331 struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap, 8332 int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred, 8333 NFSPROC_T *p) 8334 { 8335 uint32_t *tl; 8336 int error; 8337 struct nfsrv_descript nfsd; 8338 struct nfsrv_descript *nd = &nfsd; 8339 struct nfsmount *nmp; 8340 nfsattrbit_t attrbits; 8341 uint64_t len; 8342 8343 nmp = VFSTONFS(outvp->v_mount); 8344 *inattrflagp = *outattrflagp = 0; 8345 *commitp = NFSWRITE_UNSTABLE; 8346 len = *lenp; 8347 *lenp = 0; 8348 if (len > nfs_maxcopyrange) 8349 len = nfs_maxcopyrange; 8350 NFSCL_REQSTART(nd, NFSPROC_COPY, invp, cred); 8351 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8352 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8353 NFSGETATTR_ATTRBIT(&attrbits); 8354 nfsrv_putattrbit(nd, &attrbits); 8355 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8356 *tl = txdr_unsigned(NFSV4OP_PUTFH); 8357 nfsm_fhtom(nd, VTONFS(outvp)->n_fhp->nfh_fh, 8358 VTONFS(outvp)->n_fhp->nfh_len, 0); 8359 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8360 *tl = txdr_unsigned(NFSV4OP_COPY); 8361 nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID); 8362 nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID); 8363 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED); 8364 txdr_hyper(inoff, tl); tl += 2; 8365 txdr_hyper(outoff, tl); tl += 2; 8366 txdr_hyper(len, tl); tl += 2; 8367 if (consecutive) 8368 *tl++ = newnfs_true; 8369 else 8370 *tl++ = newnfs_false; 8371 *tl++ = newnfs_true; 8372 *tl++ = 0; 8373 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8374 NFSWRITEGETATTR_ATTRBIT(&attrbits); 8375 nfsrv_putattrbit(nd, &attrbits); 8376 error = nfscl_request(nd, invp, p, cred, NULL); 8377 if (error != 0) 8378 return (error); 8379 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8380 /* Get the input file's attributes. */ 8381 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8382 if (*(tl + 1) == 0) { 8383 error = nfsm_loadattr(nd, innap); 8384 if (error != 0) 8385 goto nfsmout; 8386 *inattrflagp = 1; 8387 } else 8388 nd->nd_flag |= ND_NOMOREDATA; 8389 } 8390 /* Skip over return stat for PutFH. */ 8391 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8392 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8393 if (*++tl != 0) 8394 nd->nd_flag |= ND_NOMOREDATA; 8395 } 8396 /* Skip over return stat for Copy. */ 8397 if ((nd->nd_flag & ND_NOMOREDATA) == 0) 8398 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8399 if (nd->nd_repstat == 0) { 8400 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8401 if (*tl != 0) { 8402 /* There should be no callback ids. */ 8403 error = NFSERR_BADXDR; 8404 goto nfsmout; 8405 } 8406 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED + 8407 NFSX_VERF); 8408 len = fxdr_hyper(tl); tl += 2; 8409 *commitp = fxdr_unsigned(int, *tl++); 8410 NFSLOCKMNT(nmp); 8411 if (!NFSHASWRITEVERF(nmp)) { 8412 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8413 NFSSETWRITEVERF(nmp); 8414 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 8415 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8416 nd->nd_repstat = NFSERR_STALEWRITEVERF; 8417 } 8418 NFSUNLOCKMNT(nmp); 8419 tl += (NFSX_VERF / NFSX_UNSIGNED); 8420 if (nd->nd_repstat == 0 && *++tl != newnfs_true) 8421 /* Must be a synchronous copy. */ 8422 nd->nd_repstat = NFSERR_NOTSUPP; 8423 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8424 error = nfsm_loadattr(nd, outnap); 8425 if (error == 0) 8426 *outattrflagp = NFS_LATTR_NOSHRINK; 8427 if (nd->nd_repstat == 0) 8428 *lenp = len; 8429 } else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) { 8430 /* 8431 * For the case where consecutive is not supported, but 8432 * synchronous is supported, we can try consecutive == false 8433 * by returning this error. Otherwise, return NFSERR_NOTSUPP, 8434 * since Copy cannot be done. 8435 */ 8436 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8437 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8438 if (!consecutive || *++tl == newnfs_false) 8439 nd->nd_repstat = NFSERR_NOTSUPP; 8440 } else 8441 nd->nd_repstat = NFSERR_BADXDR; 8442 } 8443 if (error == 0) 8444 error = nd->nd_repstat; 8445 nfsmout: 8446 m_freem(nd->nd_mrep); 8447 return (error); 8448 } 8449 8450 /* 8451 * Seek operation. 8452 */ 8453 int 8454 nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content, 8455 struct ucred *cred, struct nfsvattr *nap, int *attrflagp) 8456 { 8457 int error, expireret = 0, retrycnt; 8458 u_int32_t clidrev = 0; 8459 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 8460 struct nfsnode *np = VTONFS(vp); 8461 struct nfsfh *nfhp = NULL; 8462 nfsv4stateid_t stateid; 8463 void *lckp; 8464 8465 if (nmp->nm_clp != NULL) 8466 clidrev = nmp->nm_clp->nfsc_clientidrev; 8467 nfhp = np->n_fhp; 8468 retrycnt = 0; 8469 do { 8470 lckp = NULL; 8471 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 8472 NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp); 8473 error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content, 8474 nap, attrflagp, cred); 8475 if (error == NFSERR_STALESTATEID) 8476 nfscl_initiate_recovery(nmp->nm_clp); 8477 if (lckp != NULL) 8478 nfscl_lockderef(lckp); 8479 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8480 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8481 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8482 (void) nfs_catnap(PZERO, error, "nfs_seek"); 8483 } else if ((error == NFSERR_EXPIRED || (!NFSHASINT(nmp) && 8484 error == NFSERR_BADSTATEID)) && clidrev != 0) { 8485 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8486 curthread); 8487 } else if (error == NFSERR_BADSTATEID && NFSHASINT(nmp)) { 8488 error = EIO; 8489 } 8490 retrycnt++; 8491 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8492 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8493 error == NFSERR_BADSESSION || 8494 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8495 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8496 expireret == 0 && clidrev != 0 && retrycnt < 4) || 8497 (error == NFSERR_OPENMODE && retrycnt < 4)); 8498 if (error && retrycnt >= 4) 8499 error = EIO; 8500 return (error); 8501 } 8502 8503 /* 8504 * The seek RPC. 8505 */ 8506 static int 8507 nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp, 8508 int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred) 8509 { 8510 uint32_t *tl; 8511 int error; 8512 struct nfsrv_descript nfsd; 8513 struct nfsrv_descript *nd = &nfsd; 8514 nfsattrbit_t attrbits; 8515 8516 *attrflagp = 0; 8517 NFSCL_REQSTART(nd, NFSPROC_SEEK, vp, cred); 8518 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 8519 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8520 txdr_hyper(*offp, tl); tl += 2; 8521 *tl++ = txdr_unsigned(content); 8522 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8523 NFSGETATTR_ATTRBIT(&attrbits); 8524 nfsrv_putattrbit(nd, &attrbits); 8525 error = nfscl_request(nd, vp, curthread, cred, NULL); 8526 if (error != 0) 8527 return (error); 8528 if (nd->nd_repstat == 0) { 8529 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER); 8530 if (*tl++ == newnfs_true) 8531 *eofp = true; 8532 else 8533 *eofp = false; 8534 *offp = fxdr_hyper(tl); 8535 /* Just skip over Getattr op status. */ 8536 error = nfsm_loadattr(nd, nap); 8537 if (error == 0) 8538 *attrflagp = 1; 8539 } 8540 error = nd->nd_repstat; 8541 nfsmout: 8542 m_freem(nd->nd_mrep); 8543 return (error); 8544 } 8545 8546 /* 8547 * The getextattr RPC. 8548 */ 8549 int 8550 nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp, 8551 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8552 { 8553 uint32_t *tl; 8554 int error; 8555 struct nfsrv_descript nfsd; 8556 struct nfsrv_descript *nd = &nfsd; 8557 nfsattrbit_t attrbits; 8558 uint32_t len, len2; 8559 8560 *attrflagp = 0; 8561 NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp, cred); 8562 nfsm_strtom(nd, name, strlen(name)); 8563 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8564 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8565 NFSGETATTR_ATTRBIT(&attrbits); 8566 nfsrv_putattrbit(nd, &attrbits); 8567 error = nfscl_request(nd, vp, p, cred, NULL); 8568 if (error != 0) 8569 return (error); 8570 if (nd->nd_repstat == 0) { 8571 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8572 len = fxdr_unsigned(uint32_t, *tl); 8573 /* Sanity check lengths. */ 8574 if (uiop != NULL && len > 0 && len <= IOSIZE_MAX && 8575 uiop->uio_resid <= UINT32_MAX) { 8576 len2 = uiop->uio_resid; 8577 if (len2 >= len) 8578 error = nfsm_mbufuio(nd, uiop, len); 8579 else { 8580 error = nfsm_mbufuio(nd, uiop, len2); 8581 if (error == 0) { 8582 /* 8583 * nfsm_mbufuio() advances to a multiple 8584 * of 4, so round up len2 as well. Then 8585 * we need to advance over the rest of 8586 * the data, rounding up the remaining 8587 * length. 8588 */ 8589 len2 = NFSM_RNDUP(len2); 8590 len2 = NFSM_RNDUP(len - len2); 8591 if (len2 > 0) 8592 error = nfsm_advance(nd, len2, 8593 -1); 8594 } 8595 } 8596 } else if (uiop == NULL && len > 0) { 8597 /* Just wants the length and not the data. */ 8598 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8599 } else if (len > 0) 8600 error = ENOATTR; 8601 if (error != 0) 8602 goto nfsmout; 8603 *lenp = len; 8604 /* Just skip over Getattr op status. */ 8605 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8606 error = nfsm_loadattr(nd, nap); 8607 if (error == 0) 8608 *attrflagp = 1; 8609 } 8610 if (error == 0) 8611 error = nd->nd_repstat; 8612 nfsmout: 8613 m_freem(nd->nd_mrep); 8614 return (error); 8615 } 8616 8617 /* 8618 * The setextattr RPC. 8619 */ 8620 int 8621 nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop, 8622 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8623 { 8624 uint32_t *tl; 8625 int error; 8626 struct nfsrv_descript nfsd; 8627 struct nfsrv_descript *nd = &nfsd; 8628 nfsattrbit_t attrbits; 8629 8630 *attrflagp = 0; 8631 NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp, cred); 8632 if (uiop->uio_resid > nd->nd_maxreq) { 8633 /* nd_maxreq is set by NFSCL_REQSTART(). */ 8634 m_freem(nd->nd_mreq); 8635 return (EINVAL); 8636 } 8637 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8638 *tl = txdr_unsigned(NFSV4SXATTR_EITHER); 8639 nfsm_strtom(nd, name, strlen(name)); 8640 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8641 *tl = txdr_unsigned(uiop->uio_resid); 8642 nfsm_uiombuf(nd, uiop, uiop->uio_resid); 8643 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8644 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8645 NFSGETATTR_ATTRBIT(&attrbits); 8646 nfsrv_putattrbit(nd, &attrbits); 8647 error = nfscl_request(nd, vp, p, cred, NULL); 8648 if (error != 0) 8649 return (error); 8650 if (nd->nd_repstat == 0) { 8651 /* Just skip over the reply and Getattr op status. */ 8652 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8653 NFSX_UNSIGNED); 8654 error = nfsm_loadattr(nd, nap); 8655 if (error == 0) 8656 *attrflagp = 1; 8657 } 8658 if (error == 0) 8659 error = nd->nd_repstat; 8660 nfsmout: 8661 m_freem(nd->nd_mrep); 8662 return (error); 8663 } 8664 8665 /* 8666 * The removeextattr RPC. 8667 */ 8668 int 8669 nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap, 8670 int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8671 { 8672 uint32_t *tl; 8673 int error; 8674 struct nfsrv_descript nfsd; 8675 struct nfsrv_descript *nd = &nfsd; 8676 nfsattrbit_t attrbits; 8677 8678 *attrflagp = 0; 8679 NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp, cred); 8680 nfsm_strtom(nd, name, strlen(name)); 8681 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8682 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8683 NFSGETATTR_ATTRBIT(&attrbits); 8684 nfsrv_putattrbit(nd, &attrbits); 8685 error = nfscl_request(nd, vp, p, cred, NULL); 8686 if (error != 0) 8687 return (error); 8688 if (nd->nd_repstat == 0) { 8689 /* Just skip over the reply and Getattr op status. */ 8690 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8691 NFSX_UNSIGNED); 8692 error = nfsm_loadattr(nd, nap); 8693 if (error == 0) 8694 *attrflagp = 1; 8695 } 8696 if (error == 0) 8697 error = nd->nd_repstat; 8698 nfsmout: 8699 m_freem(nd->nd_mrep); 8700 return (error); 8701 } 8702 8703 /* 8704 * The listextattr RPC. 8705 */ 8706 int 8707 nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop, 8708 size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp, 8709 struct ucred *cred, NFSPROC_T *p) 8710 { 8711 uint32_t *tl; 8712 int cnt, error, i, len; 8713 struct nfsrv_descript nfsd; 8714 struct nfsrv_descript *nd = &nfsd; 8715 nfsattrbit_t attrbits; 8716 u_char c; 8717 8718 *attrflagp = 0; 8719 NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp, cred); 8720 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8721 txdr_hyper(*cookiep, tl); tl += 2; 8722 *tl++ = txdr_unsigned(*lenp); 8723 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8724 NFSGETATTR_ATTRBIT(&attrbits); 8725 nfsrv_putattrbit(nd, &attrbits); 8726 error = nfscl_request(nd, vp, p, cred, NULL); 8727 if (error != 0) 8728 return (error); 8729 *eofp = true; 8730 *lenp = 0; 8731 if (nd->nd_repstat == 0) { 8732 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 8733 *cookiep = fxdr_hyper(tl); tl += 2; 8734 cnt = fxdr_unsigned(int, *tl); 8735 if (cnt < 0) { 8736 error = EBADRPC; 8737 goto nfsmout; 8738 } 8739 for (i = 0; i < cnt; i++) { 8740 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8741 len = fxdr_unsigned(int, *tl); 8742 if (len <= 0 || len > EXTATTR_MAXNAMELEN) { 8743 error = EBADRPC; 8744 goto nfsmout; 8745 } 8746 if (uiop == NULL) 8747 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8748 else if (uiop->uio_resid >= len + 1) { 8749 c = len; 8750 error = uiomove(&c, sizeof(c), uiop); 8751 if (error == 0) 8752 error = nfsm_mbufuio(nd, uiop, len); 8753 } else { 8754 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8755 *eofp = false; 8756 } 8757 if (error != 0) 8758 goto nfsmout; 8759 *lenp += (len + 1); 8760 } 8761 /* Get the eof and skip over the Getattr op status. */ 8762 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 8763 /* 8764 * *eofp is set false above, because it wasn't able to copy 8765 * all of the reply. 8766 */ 8767 if (*eofp && *tl == 0) 8768 *eofp = false; 8769 error = nfsm_loadattr(nd, nap); 8770 if (error == 0) 8771 *attrflagp = 1; 8772 } 8773 if (error == 0) 8774 error = nd->nd_repstat; 8775 nfsmout: 8776 m_freem(nd->nd_mrep); 8777 return (error); 8778 } 8779 8780 /* 8781 * Split an mbuf list. For non-M_EXTPG mbufs, just use m_split(). 8782 */ 8783 static struct mbuf * 8784 nfsm_split(struct mbuf *mp, uint64_t xfer) 8785 { 8786 struct mbuf *m, *m2; 8787 vm_page_t pg; 8788 int i, j, left, pgno, plen, trim; 8789 char *cp, *cp2; 8790 8791 if ((mp->m_flags & M_EXTPG) == 0) { 8792 m = m_split(mp, xfer, M_WAITOK); 8793 return (m); 8794 } 8795 8796 /* Find the correct mbuf to split at. */ 8797 for (m = mp; m != NULL && xfer > m->m_len; m = m->m_next) 8798 xfer -= m->m_len; 8799 if (m == NULL) 8800 return (NULL); 8801 8802 /* If xfer == m->m_len, we can just split the mbuf list. */ 8803 if (xfer == m->m_len) { 8804 m2 = m->m_next; 8805 m->m_next = NULL; 8806 return (m2); 8807 } 8808 8809 /* Find the page to split at. */ 8810 pgno = 0; 8811 left = xfer; 8812 do { 8813 if (pgno == 0) 8814 plen = m_epg_pagelen(m, 0, m->m_epg_1st_off); 8815 else 8816 plen = m_epg_pagelen(m, pgno, 0); 8817 if (left <= plen) 8818 break; 8819 left -= plen; 8820 pgno++; 8821 } while (pgno < m->m_epg_npgs); 8822 if (pgno == m->m_epg_npgs) 8823 panic("nfsm_split: eroneous ext_pgs mbuf"); 8824 8825 m2 = mb_alloc_ext_pgs(M_WAITOK, mb_free_mext_pgs); 8826 m2->m_epg_flags |= EPG_FLAG_ANON; 8827 8828 /* 8829 * If left < plen, allocate a new page for the new mbuf 8830 * and copy the data after left in the page to this new 8831 * page. 8832 */ 8833 if (left < plen) { 8834 pg = vm_page_alloc_noobj(VM_ALLOC_WAITOK | VM_ALLOC_NODUMP | 8835 VM_ALLOC_WIRED); 8836 m2->m_epg_pa[0] = VM_PAGE_TO_PHYS(pg); 8837 m2->m_epg_npgs = 1; 8838 8839 /* Copy the data after left to the new page. */ 8840 trim = plen - left; 8841 cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 8842 if (pgno == 0) 8843 cp += m->m_epg_1st_off; 8844 cp += left; 8845 cp2 = (char *)(void *)PHYS_TO_DMAP(m2->m_epg_pa[0]); 8846 if (pgno == m->m_epg_npgs - 1) 8847 m2->m_epg_last_len = trim; 8848 else { 8849 cp2 += PAGE_SIZE - trim; 8850 m2->m_epg_1st_off = PAGE_SIZE - trim; 8851 m2->m_epg_last_len = m->m_epg_last_len; 8852 } 8853 memcpy(cp2, cp, trim); 8854 m2->m_len = trim; 8855 } else { 8856 m2->m_len = 0; 8857 m2->m_epg_last_len = m->m_epg_last_len; 8858 } 8859 8860 /* Move the pages beyond pgno to the new mbuf. */ 8861 for (i = pgno + 1, j = m2->m_epg_npgs; i < m->m_epg_npgs; i++, j++) { 8862 m2->m_epg_pa[j] = m->m_epg_pa[i]; 8863 /* Never moves page 0. */ 8864 m2->m_len += m_epg_pagelen(m, i, 0); 8865 } 8866 m2->m_epg_npgs = j; 8867 m->m_epg_npgs = pgno + 1; 8868 m->m_epg_last_len = left; 8869 m->m_len = xfer; 8870 8871 m2->m_next = m->m_next; 8872 m->m_next = NULL; 8873 return (m2); 8874 } 8875 8876 /* 8877 * Do the NFSv4.1 Bind Connection to Session. 8878 * Called from the reconnect layer of the krpc (sys/rpc/clnt_rc.c). 8879 */ 8880 void 8881 nfsrpc_bindconnsess(CLIENT *cl, void *arg, struct ucred *cr) 8882 { 8883 struct nfscl_reconarg *rcp = (struct nfscl_reconarg *)arg; 8884 uint32_t res, *tl; 8885 struct nfsrv_descript nfsd; 8886 struct nfsrv_descript *nd = &nfsd; 8887 struct rpc_callextra ext; 8888 struct timeval utimeout; 8889 enum clnt_stat stat; 8890 int error; 8891 8892 nfscl_reqstart(nd, NFSPROC_BINDCONNTOSESS, NULL, NULL, 0, NULL, NULL, 8893 NFS_VER4, rcp->minorvers, NULL); 8894 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID + 2 * NFSX_UNSIGNED); 8895 memcpy(tl, rcp->sessionid, NFSX_V4SESSIONID); 8896 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 8897 *tl++ = txdr_unsigned(NFSCDFC4_FORE_OR_BOTH); 8898 *tl = newnfs_false; 8899 8900 memset(&ext, 0, sizeof(ext)); 8901 utimeout.tv_sec = 30; 8902 utimeout.tv_usec = 0; 8903 ext.rc_auth = authunix_create(cr); 8904 nd->nd_mrep = NULL; 8905 stat = CLNT_CALL_MBUF(cl, &ext, NFSV4PROC_COMPOUND, nd->nd_mreq, 8906 &nd->nd_mrep, utimeout); 8907 AUTH_DESTROY(ext.rc_auth); 8908 if (stat != RPC_SUCCESS) { 8909 printf("nfsrpc_bindconnsess: call failed stat=%d\n", stat); 8910 return; 8911 } 8912 if (nd->nd_mrep == NULL) { 8913 printf("nfsrpc_bindconnsess: no reply args\n"); 8914 return; 8915 } 8916 error = 0; 8917 newnfs_realign(&nd->nd_mrep, M_WAITOK); 8918 nd->nd_md = nd->nd_mrep; 8919 nd->nd_dpos = mtod(nd->nd_md, char *); 8920 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8921 nd->nd_repstat = fxdr_unsigned(uint32_t, *tl++); 8922 if (nd->nd_repstat == NFSERR_OK) { 8923 res = fxdr_unsigned(uint32_t, *tl); 8924 if (res > 0 && (error = nfsm_advance(nd, NFSM_RNDUP(res), 8925 -1)) != 0) 8926 goto nfsmout; 8927 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 8928 4 * NFSX_UNSIGNED); 8929 tl += 3; 8930 if (!NFSBCMP(tl, rcp->sessionid, NFSX_V4SESSIONID)) { 8931 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 8932 res = fxdr_unsigned(uint32_t, *tl); 8933 if (res != NFSCDFS4_BOTH) 8934 printf("nfsrpc_bindconnsess: did not " 8935 "return FS4_BOTH\n"); 8936 } else 8937 printf("nfsrpc_bindconnsess: not same " 8938 "sessionid\n"); 8939 } else if (nd->nd_repstat != NFSERR_BADSESSION) 8940 printf("nfsrpc_bindconnsess: returned %d\n", nd->nd_repstat); 8941 nfsmout: 8942 if (error != 0) 8943 printf("nfsrpc_bindconnsess: reply bad xdr\n"); 8944 m_freem(nd->nd_mrep); 8945 }
Cache object: 1e850c471d7987a548b1ca6d02ec2059
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