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)