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 <sys/sysctl.h> 51 #include <sys/taskqueue.h> 52 53 SYSCTL_DECL(_vfs_nfs); 54 55 static int nfsignore_eexist = 0; 56 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 57 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 58 59 static int nfscl_dssameconn = 0; 60 SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW, 61 &nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs"); 62 63 /* 64 * Global variables 65 */ 66 extern struct nfsstatsv1 nfsstatsv1; 67 extern int nfs_numnfscbd; 68 extern struct timeval nfsboottime; 69 extern u_int32_t newnfs_false, newnfs_true; 70 extern nfstype nfsv34_type[9]; 71 extern int nfsrv_useacl; 72 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 73 extern int nfscl_debuglevel; 74 extern int nfs_pnfsiothreads; 75 NFSCLSTATEMUTEX; 76 int nfstest_outofseq = 0; 77 int nfscl_assumeposixlocks = 1; 78 int nfscl_enablecallb = 0; 79 short nfsv4_cbport = NFSV4_CBPORT; 80 int nfstest_openallsetattr = 0; 81 82 #define DIRHDSIZ offsetof(struct dirent, d_name) 83 84 /* 85 * nfscl_getsameserver() can return one of three values: 86 * NFSDSP_USETHISSESSION - Use this session for the DS. 87 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 88 * session. 89 * NFSDSP_NOTFOUND - No matching server was found. 90 */ 91 enum nfsclds_state { 92 NFSDSP_USETHISSESSION = 0, 93 NFSDSP_SEQTHISSESSION = 1, 94 NFSDSP_NOTFOUND = 2, 95 }; 96 97 /* 98 * Do a write RPC on a DS data file, using this structure for the arguments, 99 * so that this function can be executed by a separate kernel process. 100 */ 101 struct nfsclwritedsdorpc { 102 int done; 103 int inprog; 104 struct task tsk; 105 struct vnode *vp; 106 int iomode; 107 int must_commit; 108 nfsv4stateid_t *stateidp; 109 struct nfsclds *dsp; 110 uint64_t off; 111 int len; 112 struct nfsfh *fhp; 113 struct mbuf *m; 114 int vers; 115 int minorvers; 116 struct ucred *cred; 117 NFSPROC_T *p; 118 int err; 119 }; 120 121 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 122 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 123 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 124 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 125 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 126 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 127 void *); 128 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 129 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 130 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 131 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 132 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 133 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 134 int *, void *, int *); 135 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 136 struct nfscllockowner *, u_int64_t, u_int64_t, 137 u_int32_t, struct ucred *, NFSPROC_T *, int); 138 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 139 struct acl *, nfsv4stateid_t *, void *); 140 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 141 uint32_t, uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 142 struct ucred *, NFSPROC_T *); 143 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *, 144 struct sockaddr_in6 *, sa_family_t, int, struct nfsclds **, NFSPROC_T *); 145 static void nfscl_initsessionslots(struct nfsclsession *); 146 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 147 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 148 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *, 149 NFSPROC_T *); 150 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *, 151 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 152 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *, 153 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 154 static struct mbuf *nfsm_copym(struct mbuf *, int, int); 155 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 156 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 157 struct ucred *, NFSPROC_T *); 158 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 159 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 160 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 161 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 162 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 163 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 164 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 165 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 166 struct ucred *, NFSPROC_T *); 167 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 168 struct nfsclds *, struct nfsclds **, uint32_t *); 169 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 170 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 171 NFSPROC_T *); 172 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 173 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 174 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 175 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 176 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 177 NFSPROC_T *); 178 static int nfsrv_parselayoutget(struct nfsrv_descript *, nfsv4stateid_t *, 179 int *, struct nfsclflayouthead *); 180 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 181 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 182 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 183 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 184 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 185 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 186 struct nfsfh **, int *, int *, void *, int *); 187 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 188 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 189 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 190 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 191 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 192 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 193 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 194 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 195 int, int, int, int *, struct nfsclflayouthead *, int *); 196 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 197 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 198 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 199 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 200 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 201 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 202 203 int nfs_pnfsio(task_fn_t *, void *); 204 205 /* 206 * nfs null call from vfs. 207 */ 208 int 209 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 210 { 211 int error; 212 struct nfsrv_descript nfsd, *nd = &nfsd; 213 214 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 215 error = nfscl_request(nd, vp, p, cred, NULL); 216 if (nd->nd_repstat && !error) 217 error = nd->nd_repstat; 218 mbuf_freem(nd->nd_mrep); 219 return (error); 220 } 221 222 /* 223 * nfs access rpc op. 224 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 225 * modes are changed on the server, accesses might still fail later. 226 */ 227 int 228 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 229 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 230 { 231 int error; 232 u_int32_t mode, rmode; 233 234 if (acmode & VREAD) 235 mode = NFSACCESS_READ; 236 else 237 mode = 0; 238 if (vnode_vtype(vp) == VDIR) { 239 if (acmode & VWRITE) 240 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 241 NFSACCESS_DELETE); 242 if (acmode & VEXEC) 243 mode |= NFSACCESS_LOOKUP; 244 } else { 245 if (acmode & VWRITE) 246 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 247 if (acmode & VEXEC) 248 mode |= NFSACCESS_EXECUTE; 249 } 250 251 /* 252 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 253 */ 254 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 255 NULL); 256 257 /* 258 * The NFS V3 spec does not clarify whether or not 259 * the returned access bits can be a superset of 260 * the ones requested, so... 261 */ 262 if (!error && (rmode & mode) != mode) 263 error = EACCES; 264 return (error); 265 } 266 267 /* 268 * The actual rpc, separated out for Darwin. 269 */ 270 int 271 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 272 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 273 void *stuff) 274 { 275 u_int32_t *tl; 276 u_int32_t supported, rmode; 277 int error; 278 struct nfsrv_descript nfsd, *nd = &nfsd; 279 nfsattrbit_t attrbits; 280 281 *attrflagp = 0; 282 supported = mode; 283 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 284 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 285 *tl = txdr_unsigned(mode); 286 if (nd->nd_flag & ND_NFSV4) { 287 /* 288 * And do a Getattr op. 289 */ 290 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 291 *tl = txdr_unsigned(NFSV4OP_GETATTR); 292 NFSGETATTR_ATTRBIT(&attrbits); 293 (void) nfsrv_putattrbit(nd, &attrbits); 294 } 295 error = nfscl_request(nd, vp, p, cred, stuff); 296 if (error) 297 return (error); 298 if (nd->nd_flag & ND_NFSV3) { 299 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 300 if (error) 301 goto nfsmout; 302 } 303 if (!nd->nd_repstat) { 304 if (nd->nd_flag & ND_NFSV4) { 305 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 306 supported = fxdr_unsigned(u_int32_t, *tl++); 307 } else { 308 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 309 } 310 rmode = fxdr_unsigned(u_int32_t, *tl); 311 if (nd->nd_flag & ND_NFSV4) 312 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 313 314 /* 315 * It's not obvious what should be done about 316 * unsupported access modes. For now, be paranoid 317 * and clear the unsupported ones. 318 */ 319 rmode &= supported; 320 *rmodep = rmode; 321 } else 322 error = nd->nd_repstat; 323 nfsmout: 324 mbuf_freem(nd->nd_mrep); 325 return (error); 326 } 327 328 /* 329 * nfs open rpc 330 */ 331 int 332 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 333 { 334 struct nfsclopen *op; 335 struct nfscldeleg *dp; 336 struct nfsfh *nfhp; 337 struct nfsnode *np = VTONFS(vp); 338 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 339 u_int32_t mode, clidrev; 340 int ret, newone, error, expireret = 0, retrycnt; 341 342 /* 343 * For NFSv4, Open Ops are only done on Regular Files. 344 */ 345 if (vnode_vtype(vp) != VREG) 346 return (0); 347 mode = 0; 348 if (amode & FREAD) 349 mode |= NFSV4OPEN_ACCESSREAD; 350 if (amode & FWRITE) 351 mode |= NFSV4OPEN_ACCESSWRITE; 352 nfhp = np->n_fhp; 353 354 retrycnt = 0; 355 #ifdef notdef 356 { char name[100]; int namel; 357 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 358 bcopy(NFS4NODENAME(np->n_v4), name, namel); 359 name[namel] = '\0'; 360 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 361 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 362 else printf(" fhl=0\n"); 363 } 364 #endif 365 do { 366 dp = NULL; 367 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 368 cred, p, NULL, &op, &newone, &ret, 1, true); 369 if (error) { 370 return (error); 371 } 372 if (nmp->nm_clp != NULL) 373 clidrev = nmp->nm_clp->nfsc_clientidrev; 374 else 375 clidrev = 0; 376 if (ret == NFSCLOPEN_DOOPEN) { 377 if (np->n_v4 != NULL) { 378 /* 379 * For the first attempt, try and get a layout, if 380 * pNFS is enabled for the mount. 381 */ 382 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 383 nfs_numnfscbd == 0 || 384 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0) 385 error = nfsrpc_openrpc(nmp, vp, 386 np->n_v4->n4_data, 387 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 388 np->n_fhp->nfh_len, mode, op, 389 NFS4NODENAME(np->n_v4), 390 np->n_v4->n4_namelen, 391 &dp, 0, 0x0, cred, p, 0, 0); 392 else 393 error = nfsrpc_getopenlayout(nmp, vp, 394 np->n_v4->n4_data, 395 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 396 np->n_fhp->nfh_len, mode, op, 397 NFS4NODENAME(np->n_v4), 398 np->n_v4->n4_namelen, &dp, cred, p); 399 if (dp != NULL) { 400 #ifdef APPLE 401 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 402 #else 403 NFSLOCKNODE(np); 404 np->n_flag &= ~NDELEGMOD; 405 /* 406 * Invalidate the attribute cache, so that 407 * attributes that pre-date the issue of a 408 * delegation are not cached, since the 409 * cached attributes will remain valid while 410 * the delegation is held. 411 */ 412 NFSINVALATTRCACHE(np); 413 NFSUNLOCKNODE(np); 414 #endif 415 (void) nfscl_deleg(nmp->nm_mountp, 416 op->nfso_own->nfsow_clp, 417 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 418 } 419 } else { 420 error = EIO; 421 } 422 newnfs_copyincred(cred, &op->nfso_cred); 423 } else if (ret == NFSCLOPEN_SETCRED) 424 /* 425 * This is a new local open on a delegation. It needs 426 * to have credentials so that an open can be done 427 * against the server during recovery. 428 */ 429 newnfs_copyincred(cred, &op->nfso_cred); 430 431 /* 432 * nfso_opencnt is the count of how many VOP_OPEN()s have 433 * been done on this Open successfully and a VOP_CLOSE() 434 * is expected for each of these. 435 * If error is non-zero, don't increment it, since the Open 436 * hasn't succeeded yet. 437 */ 438 if (!error) 439 op->nfso_opencnt++; 440 nfscl_openrelease(nmp, op, error, newone); 441 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 442 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 443 error == NFSERR_BADSESSION) { 444 (void) nfs_catnap(PZERO, error, "nfs_open"); 445 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 446 && clidrev != 0) { 447 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 448 retrycnt++; 449 } 450 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 451 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 452 error == NFSERR_BADSESSION || 453 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 454 expireret == 0 && clidrev != 0 && retrycnt < 4)); 455 if (error && retrycnt >= 4) 456 error = EIO; 457 return (error); 458 } 459 460 /* 461 * the actual open rpc 462 */ 463 int 464 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 465 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 466 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 467 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 468 int syscred, int recursed) 469 { 470 u_int32_t *tl; 471 struct nfsrv_descript nfsd, *nd = &nfsd; 472 struct nfscldeleg *dp, *ndp = NULL; 473 struct nfsvattr nfsva; 474 u_int32_t rflags, deleg; 475 nfsattrbit_t attrbits; 476 int error, ret, acesize, limitby; 477 struct nfsclsession *tsep; 478 479 dp = *dpp; 480 *dpp = NULL; 481 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 482 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 483 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 484 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 485 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 486 tsep = nfsmnt_mdssession(nmp); 487 *tl++ = tsep->nfsess_clientid.lval[0]; 488 *tl = tsep->nfsess_clientid.lval[1]; 489 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 490 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 491 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 492 if (reclaim) { 493 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 494 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 495 *tl = txdr_unsigned(delegtype); 496 } else { 497 if (dp != NULL) { 498 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 499 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 500 if (NFSHASNFSV4N(nmp)) 501 *tl++ = 0; 502 else 503 *tl++ = dp->nfsdl_stateid.seqid; 504 *tl++ = dp->nfsdl_stateid.other[0]; 505 *tl++ = dp->nfsdl_stateid.other[1]; 506 *tl = dp->nfsdl_stateid.other[2]; 507 } else { 508 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 509 } 510 (void) nfsm_strtom(nd, name, namelen); 511 } 512 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 513 *tl = txdr_unsigned(NFSV4OP_GETATTR); 514 NFSZERO_ATTRBIT(&attrbits); 515 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 516 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 517 (void) nfsrv_putattrbit(nd, &attrbits); 518 if (syscred) 519 nd->nd_flag |= ND_USEGSSNAME; 520 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 521 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 522 if (error) 523 return (error); 524 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 525 if (!nd->nd_repstat) { 526 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 527 6 * NFSX_UNSIGNED); 528 op->nfso_stateid.seqid = *tl++; 529 op->nfso_stateid.other[0] = *tl++; 530 op->nfso_stateid.other[1] = *tl++; 531 op->nfso_stateid.other[2] = *tl; 532 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 533 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 534 if (error) 535 goto nfsmout; 536 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 537 deleg = fxdr_unsigned(u_int32_t, *tl); 538 if (deleg == NFSV4OPEN_DELEGATEREAD || 539 deleg == NFSV4OPEN_DELEGATEWRITE) { 540 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 541 NFSCLFLAGS_FIRSTDELEG)) 542 op->nfso_own->nfsow_clp->nfsc_flags |= 543 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 544 ndp = malloc( 545 sizeof (struct nfscldeleg) + newfhlen, 546 M_NFSCLDELEG, M_WAITOK); 547 LIST_INIT(&ndp->nfsdl_owner); 548 LIST_INIT(&ndp->nfsdl_lock); 549 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 550 ndp->nfsdl_fhlen = newfhlen; 551 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 552 newnfs_copyincred(cred, &ndp->nfsdl_cred); 553 nfscl_lockinit(&ndp->nfsdl_rwlock); 554 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 555 NFSX_UNSIGNED); 556 ndp->nfsdl_stateid.seqid = *tl++; 557 ndp->nfsdl_stateid.other[0] = *tl++; 558 ndp->nfsdl_stateid.other[1] = *tl++; 559 ndp->nfsdl_stateid.other[2] = *tl++; 560 ret = fxdr_unsigned(int, *tl); 561 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 562 ndp->nfsdl_flags = NFSCLDL_WRITE; 563 /* 564 * Indicates how much the file can grow. 565 */ 566 NFSM_DISSECT(tl, u_int32_t *, 567 3 * NFSX_UNSIGNED); 568 limitby = fxdr_unsigned(int, *tl++); 569 switch (limitby) { 570 case NFSV4OPEN_LIMITSIZE: 571 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 572 break; 573 case NFSV4OPEN_LIMITBLOCKS: 574 ndp->nfsdl_sizelimit = 575 fxdr_unsigned(u_int64_t, *tl++); 576 ndp->nfsdl_sizelimit *= 577 fxdr_unsigned(u_int64_t, *tl); 578 break; 579 default: 580 error = NFSERR_BADXDR; 581 goto nfsmout; 582 } 583 } else { 584 ndp->nfsdl_flags = NFSCLDL_READ; 585 } 586 if (ret) 587 ndp->nfsdl_flags |= NFSCLDL_RECALL; 588 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 589 &acesize, p); 590 if (error) 591 goto nfsmout; 592 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 593 error = NFSERR_BADXDR; 594 goto nfsmout; 595 } 596 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 597 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 598 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 599 NULL, NULL, NULL, p, cred); 600 if (error) 601 goto nfsmout; 602 if (ndp != NULL) { 603 ndp->nfsdl_change = nfsva.na_filerev; 604 ndp->nfsdl_modtime = nfsva.na_mtime; 605 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 606 } 607 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 608 do { 609 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 610 cred, p); 611 if (ret == NFSERR_DELAY) 612 (void) nfs_catnap(PZERO, ret, "nfs_open"); 613 } while (ret == NFSERR_DELAY); 614 error = ret; 615 } 616 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 617 nfscl_assumeposixlocks) 618 op->nfso_posixlock = 1; 619 else 620 op->nfso_posixlock = 0; 621 622 /* 623 * If the server is handing out delegations, but we didn't 624 * get one because an OpenConfirm was required, try the 625 * Open again, to get a delegation. This is a harmless no-op, 626 * from a server's point of view. 627 */ 628 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 629 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 630 && !error && dp == NULL && ndp == NULL && !recursed) { 631 do { 632 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 633 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 634 cred, p, syscred, 1); 635 if (ret == NFSERR_DELAY) 636 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 637 } while (ret == NFSERR_DELAY); 638 if (ret) { 639 if (ndp != NULL) { 640 free(ndp, M_NFSCLDELEG); 641 ndp = NULL; 642 } 643 if (ret == NFSERR_STALECLIENTID || 644 ret == NFSERR_STALEDONTRECOVER || 645 ret == NFSERR_BADSESSION) 646 error = ret; 647 } 648 } 649 } 650 if (nd->nd_repstat != 0 && error == 0) 651 error = nd->nd_repstat; 652 if (error == NFSERR_STALECLIENTID) 653 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 654 nfsmout: 655 if (!error) 656 *dpp = ndp; 657 else if (ndp != NULL) 658 free(ndp, M_NFSCLDELEG); 659 mbuf_freem(nd->nd_mrep); 660 return (error); 661 } 662 663 /* 664 * open downgrade rpc 665 */ 666 int 667 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 668 struct ucred *cred, NFSPROC_T *p) 669 { 670 u_int32_t *tl; 671 struct nfsrv_descript nfsd, *nd = &nfsd; 672 int error; 673 674 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 675 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 676 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 677 *tl++ = 0; 678 else 679 *tl++ = op->nfso_stateid.seqid; 680 *tl++ = op->nfso_stateid.other[0]; 681 *tl++ = op->nfso_stateid.other[1]; 682 *tl++ = op->nfso_stateid.other[2]; 683 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 684 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 685 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 686 error = nfscl_request(nd, vp, p, cred, NULL); 687 if (error) 688 return (error); 689 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 690 if (!nd->nd_repstat) { 691 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 692 op->nfso_stateid.seqid = *tl++; 693 op->nfso_stateid.other[0] = *tl++; 694 op->nfso_stateid.other[1] = *tl++; 695 op->nfso_stateid.other[2] = *tl; 696 } 697 if (nd->nd_repstat && error == 0) 698 error = nd->nd_repstat; 699 if (error == NFSERR_STALESTATEID) 700 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 701 nfsmout: 702 mbuf_freem(nd->nd_mrep); 703 return (error); 704 } 705 706 /* 707 * V4 Close operation. 708 */ 709 int 710 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 711 { 712 struct nfsclclient *clp; 713 int error; 714 715 if (vnode_vtype(vp) != VREG) 716 return (0); 717 if (doclose) 718 error = nfscl_doclose(vp, &clp, p); 719 else { 720 error = nfscl_getclose(vp, &clp); 721 if (error == 0) 722 nfscl_clientrelease(clp); 723 } 724 return (error); 725 } 726 727 /* 728 * Close the open. 729 */ 730 int 731 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p, 732 bool loop_on_delayed, bool freeop) 733 { 734 struct nfsrv_descript nfsd, *nd = &nfsd; 735 struct nfscllockowner *lp, *nlp; 736 struct nfscllock *lop, *nlop; 737 struct ucred *tcred; 738 u_int64_t off = 0, len = 0; 739 u_int32_t type = NFSV4LOCKT_READ; 740 int error, do_unlock, trycnt; 741 742 tcred = newnfs_getcred(); 743 newnfs_copycred(&op->nfso_cred, tcred); 744 /* 745 * (Theoretically this could be done in the same 746 * compound as the close, but having multiple 747 * sequenced Ops in the same compound might be 748 * too scary for some servers.) 749 */ 750 if (op->nfso_posixlock) { 751 off = 0; 752 len = NFS64BITSSET; 753 type = NFSV4LOCKT_READ; 754 } 755 756 /* 757 * Since this function is only called from VOP_INACTIVE(), no 758 * other thread will be manipulating this Open. As such, the 759 * lock lists are not being changed by other threads, so it should 760 * be safe to do this without locking. 761 */ 762 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 763 do_unlock = 1; 764 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 765 if (op->nfso_posixlock == 0) { 766 off = lop->nfslo_first; 767 len = lop->nfslo_end - lop->nfslo_first; 768 if (lop->nfslo_type == F_WRLCK) 769 type = NFSV4LOCKT_WRITE; 770 else 771 type = NFSV4LOCKT_READ; 772 } 773 if (do_unlock) { 774 trycnt = 0; 775 do { 776 error = nfsrpc_locku(nd, nmp, lp, off, 777 len, type, tcred, p, 0); 778 if ((nd->nd_repstat == NFSERR_GRACE || 779 nd->nd_repstat == NFSERR_DELAY) && 780 error == 0) 781 (void) nfs_catnap(PZERO, 782 (int)nd->nd_repstat, 783 "nfs_close"); 784 } while ((nd->nd_repstat == NFSERR_GRACE || 785 nd->nd_repstat == NFSERR_DELAY) && 786 error == 0 && trycnt++ < 5); 787 if (op->nfso_posixlock) 788 do_unlock = 0; 789 } 790 nfscl_freelock(lop, 0); 791 } 792 /* 793 * Do a ReleaseLockOwner. 794 * The lock owner name nfsl_owner may be used by other opens for 795 * other files but the lock_owner4 name that nfsrpc_rellockown() 796 * puts on the wire has the file handle for this file appended 797 * to it, so it can be done now. 798 */ 799 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 800 lp->nfsl_open->nfso_fhlen, tcred, p); 801 } 802 803 /* 804 * There could be other Opens for different files on the same 805 * OpenOwner, so locking is required. 806 */ 807 NFSLOCKCLSTATE(); 808 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 809 NFSUNLOCKCLSTATE(); 810 do { 811 error = nfscl_tryclose(op, tcred, nmp, p, loop_on_delayed); 812 if (error == NFSERR_GRACE) 813 (void) nfs_catnap(PZERO, error, "nfs_close"); 814 } while (error == NFSERR_GRACE); 815 NFSLOCKCLSTATE(); 816 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 817 818 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 819 nfscl_freelockowner(lp, 0); 820 if (freeop && error != NFSERR_DELAY) 821 nfscl_freeopen(op, 0, true); 822 NFSUNLOCKCLSTATE(); 823 NFSFREECRED(tcred); 824 return (error); 825 } 826 827 /* 828 * The actual Close RPC. 829 */ 830 int 831 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 832 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 833 int syscred) 834 { 835 u_int32_t *tl; 836 int error; 837 838 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 839 op->nfso_fhlen, NULL, NULL, 0, 0); 840 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 841 if (NFSHASNFSV4N(nmp)) { 842 *tl++ = 0; 843 *tl++ = 0; 844 } else { 845 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 846 *tl++ = op->nfso_stateid.seqid; 847 } 848 *tl++ = op->nfso_stateid.other[0]; 849 *tl++ = op->nfso_stateid.other[1]; 850 *tl = op->nfso_stateid.other[2]; 851 if (syscred) 852 nd->nd_flag |= ND_USEGSSNAME; 853 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 854 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 855 if (error) 856 return (error); 857 if (!NFSHASNFSV4N(nmp)) 858 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 859 if (nd->nd_repstat == 0) 860 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 861 error = nd->nd_repstat; 862 if (!NFSHASNFSV4N(nmp) && error == NFSERR_STALESTATEID) 863 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 864 nfsmout: 865 mbuf_freem(nd->nd_mrep); 866 return (error); 867 } 868 869 /* 870 * V4 Open Confirm RPC. 871 */ 872 int 873 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 874 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 875 { 876 u_int32_t *tl; 877 struct nfsrv_descript nfsd, *nd = &nfsd; 878 struct nfsmount *nmp; 879 int error; 880 881 nmp = VFSTONFS(vnode_mount(vp)); 882 if (NFSHASNFSV4N(nmp)) 883 return (0); /* No confirmation for NFSv4.1. */ 884 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 885 0, 0); 886 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 887 *tl++ = op->nfso_stateid.seqid; 888 *tl++ = op->nfso_stateid.other[0]; 889 *tl++ = op->nfso_stateid.other[1]; 890 *tl++ = op->nfso_stateid.other[2]; 891 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 892 error = nfscl_request(nd, vp, p, cred, NULL); 893 if (error) 894 return (error); 895 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 896 if (!nd->nd_repstat) { 897 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 898 op->nfso_stateid.seqid = *tl++; 899 op->nfso_stateid.other[0] = *tl++; 900 op->nfso_stateid.other[1] = *tl++; 901 op->nfso_stateid.other[2] = *tl; 902 } 903 error = nd->nd_repstat; 904 if (error == NFSERR_STALESTATEID) 905 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 906 nfsmout: 907 mbuf_freem(nd->nd_mrep); 908 return (error); 909 } 910 911 /* 912 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 913 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 914 */ 915 int 916 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 917 struct ucred *cred, NFSPROC_T *p) 918 { 919 u_int32_t *tl; 920 struct nfsrv_descript nfsd; 921 struct nfsrv_descript *nd = &nfsd; 922 nfsattrbit_t attrbits; 923 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 924 u_short port; 925 int error, isinet6 = 0, callblen; 926 nfsquad_t confirm; 927 u_int32_t lease; 928 static u_int32_t rev = 0; 929 struct nfsclds *dsp; 930 struct in6_addr a6; 931 struct nfsclsession *tsep; 932 struct rpc_reconupcall recon; 933 struct nfscl_reconarg *rcp; 934 935 if (nfsboottime.tv_sec == 0) 936 NFSSETBOOTTIME(nfsboottime); 937 clp->nfsc_rev = rev++; 938 if (NFSHASNFSV4N(nmp)) { 939 /* 940 * Either there was no previous session or the 941 * previous session has failed, so... 942 * do an ExchangeID followed by the CreateSession. 943 */ 944 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 945 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 946 NFSCL_DEBUG(1, "aft exch=%d\n", error); 947 if (error == 0) 948 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 949 &nmp->nm_sockreq, 950 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 951 if (error == 0) { 952 /* 953 * If the session supports a backchannel, set up 954 * the BindConnectionToSession call in the krpc 955 * so that it is done on a reconnection. 956 */ 957 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) { 958 rcp = mem_alloc(sizeof(*rcp)); 959 rcp->minorvers = nmp->nm_minorvers; 960 memcpy(rcp->sessionid, 961 dsp->nfsclds_sess.nfsess_sessionid, 962 NFSX_V4SESSIONID); 963 recon.call = nfsrpc_bindconnsess; 964 recon.arg = rcp; 965 CLNT_CONTROL(nmp->nm_client, CLSET_RECONUPCALL, 966 &recon); 967 } 968 969 NFSLOCKMNT(nmp); 970 /* 971 * The old sessions cannot be safely free'd 972 * here, since they may still be used by 973 * in-progress RPCs. 974 */ 975 tsep = NULL; 976 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) { 977 /* 978 * Mark the old session defunct. Needed 979 * when called from nfscl_hasexpired(). 980 */ 981 tsep = NFSMNT_MDSSESSION(nmp); 982 tsep->nfsess_defunct = 1; 983 } 984 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 985 nfsclds_list); 986 /* 987 * Wake up RPCs waiting for a slot on the 988 * old session. These will then fail with 989 * NFSERR_BADSESSION and be retried with the 990 * new session by nfsv4_setsequence(). 991 * Also wakeup() processes waiting for the 992 * new session. 993 */ 994 if (tsep != NULL) 995 wakeup(&tsep->nfsess_slots); 996 wakeup(&nmp->nm_sess); 997 NFSUNLOCKMNT(nmp); 998 } else 999 nfscl_freenfsclds(dsp); 1000 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 1001 if (error == 0 && reclaim == 0) { 1002 error = nfsrpc_reclaimcomplete(nmp, cred, p); 1003 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 1004 if (error == NFSERR_COMPLETEALREADY || 1005 error == NFSERR_NOTSUPP) 1006 /* Ignore this error. */ 1007 error = 0; 1008 } 1009 return (error); 1010 } 1011 1012 /* 1013 * Allocate a single session structure for NFSv4.0, because some of 1014 * the fields are used by NFSv4.0 although it doesn't do a session. 1015 */ 1016 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 1017 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 1018 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 1019 NFSLOCKMNT(nmp); 1020 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 1021 tsep = NFSMNT_MDSSESSION(nmp); 1022 NFSUNLOCKMNT(nmp); 1023 1024 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0); 1025 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1026 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 1027 *tl = txdr_unsigned(clp->nfsc_rev); 1028 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 1029 1030 /* 1031 * set up the callback address 1032 */ 1033 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1034 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1035 callblen = strlen(nfsv4_callbackaddr); 1036 if (callblen == 0) 1037 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1038 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1039 (callblen > 0 || cp != NULL)) { 1040 port = htons(nfsv4_cbport); 1041 cp2 = (u_int8_t *)&port; 1042 #ifdef INET6 1043 if ((callblen > 0 && 1044 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1045 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1046 1047 (void) nfsm_strtom(nd, "tcp6", 4); 1048 if (callblen == 0) { 1049 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1050 ip6add = ip6buf; 1051 } else { 1052 ip6add = nfsv4_callbackaddr; 1053 } 1054 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1055 ip6add, cp2[0], cp2[1]); 1056 } else 1057 #endif 1058 { 1059 (void) nfsm_strtom(nd, "tcp", 3); 1060 if (callblen == 0) 1061 snprintf(addr, INET6_ADDRSTRLEN + 9, 1062 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1063 cp[2], cp[3], cp2[0], cp2[1]); 1064 else 1065 snprintf(addr, INET6_ADDRSTRLEN + 9, 1066 "%s.%d.%d", nfsv4_callbackaddr, 1067 cp2[0], cp2[1]); 1068 } 1069 (void) nfsm_strtom(nd, addr, strlen(addr)); 1070 } else { 1071 (void) nfsm_strtom(nd, "tcp", 3); 1072 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1073 } 1074 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1075 *tl = txdr_unsigned(clp->nfsc_cbident); 1076 nd->nd_flag |= ND_USEGSSNAME; 1077 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1078 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1079 if (error) 1080 return (error); 1081 if (nd->nd_repstat == 0) { 1082 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1083 tsep->nfsess_clientid.lval[0] = *tl++; 1084 tsep->nfsess_clientid.lval[1] = *tl++; 1085 confirm.lval[0] = *tl++; 1086 confirm.lval[1] = *tl; 1087 mbuf_freem(nd->nd_mrep); 1088 nd->nd_mrep = NULL; 1089 1090 /* 1091 * and confirm it. 1092 */ 1093 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1094 NULL, 0, 0); 1095 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1096 *tl++ = tsep->nfsess_clientid.lval[0]; 1097 *tl++ = tsep->nfsess_clientid.lval[1]; 1098 *tl++ = confirm.lval[0]; 1099 *tl = confirm.lval[1]; 1100 nd->nd_flag |= ND_USEGSSNAME; 1101 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1102 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1103 if (error) 1104 return (error); 1105 mbuf_freem(nd->nd_mrep); 1106 nd->nd_mrep = NULL; 1107 if (nd->nd_repstat == 0) { 1108 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 1109 nmp->nm_fhsize, NULL, NULL, 0, 0); 1110 NFSZERO_ATTRBIT(&attrbits); 1111 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1112 (void) nfsrv_putattrbit(nd, &attrbits); 1113 nd->nd_flag |= ND_USEGSSNAME; 1114 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1115 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1116 if (error) 1117 return (error); 1118 if (nd->nd_repstat == 0) { 1119 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 1120 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1121 if (error) 1122 goto nfsmout; 1123 clp->nfsc_renew = NFSCL_RENEW(lease); 1124 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1125 clp->nfsc_clientidrev++; 1126 if (clp->nfsc_clientidrev == 0) 1127 clp->nfsc_clientidrev++; 1128 } 1129 } 1130 } 1131 error = nd->nd_repstat; 1132 nfsmout: 1133 mbuf_freem(nd->nd_mrep); 1134 return (error); 1135 } 1136 1137 /* 1138 * nfs getattr call. 1139 */ 1140 int 1141 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1142 struct nfsvattr *nap, void *stuff) 1143 { 1144 struct nfsrv_descript nfsd, *nd = &nfsd; 1145 int error; 1146 nfsattrbit_t attrbits; 1147 1148 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1149 if (nd->nd_flag & ND_NFSV4) { 1150 NFSGETATTR_ATTRBIT(&attrbits); 1151 (void) nfsrv_putattrbit(nd, &attrbits); 1152 } 1153 error = nfscl_request(nd, vp, p, cred, stuff); 1154 if (error) 1155 return (error); 1156 if (!nd->nd_repstat) 1157 error = nfsm_loadattr(nd, nap); 1158 else 1159 error = nd->nd_repstat; 1160 mbuf_freem(nd->nd_mrep); 1161 return (error); 1162 } 1163 1164 /* 1165 * nfs getattr call with non-vnode arguments. 1166 */ 1167 int 1168 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1169 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1170 uint32_t *leasep) 1171 { 1172 struct nfsrv_descript nfsd, *nd = &nfsd; 1173 int error, vers = NFS_VER2; 1174 nfsattrbit_t attrbits; 1175 1176 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0); 1177 if (nd->nd_flag & ND_NFSV4) { 1178 vers = NFS_VER4; 1179 NFSGETATTR_ATTRBIT(&attrbits); 1180 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1181 (void) nfsrv_putattrbit(nd, &attrbits); 1182 } else if (nd->nd_flag & ND_NFSV3) { 1183 vers = NFS_VER3; 1184 } 1185 if (syscred) 1186 nd->nd_flag |= ND_USEGSSNAME; 1187 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1188 NFS_PROG, vers, NULL, 1, xidp, NULL); 1189 if (error) 1190 return (error); 1191 if (nd->nd_repstat == 0) { 1192 if ((nd->nd_flag & ND_NFSV4) != 0) 1193 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1194 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1195 NULL, NULL); 1196 else 1197 error = nfsm_loadattr(nd, nap); 1198 } else 1199 error = nd->nd_repstat; 1200 mbuf_freem(nd->nd_mrep); 1201 return (error); 1202 } 1203 1204 /* 1205 * Do an nfs setattr operation. 1206 */ 1207 int 1208 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1209 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1210 void *stuff) 1211 { 1212 int error, expireret = 0, openerr, retrycnt; 1213 u_int32_t clidrev = 0, mode; 1214 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1215 struct nfsfh *nfhp; 1216 nfsv4stateid_t stateid; 1217 void *lckp; 1218 1219 if (nmp->nm_clp != NULL) 1220 clidrev = nmp->nm_clp->nfsc_clientidrev; 1221 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1222 mode = NFSV4OPEN_ACCESSWRITE; 1223 else 1224 mode = NFSV4OPEN_ACCESSREAD; 1225 retrycnt = 0; 1226 do { 1227 lckp = NULL; 1228 openerr = 1; 1229 if (NFSHASNFSV4(nmp)) { 1230 nfhp = VTONFS(vp)->n_fhp; 1231 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1232 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1233 if (error && vnode_vtype(vp) == VREG && 1234 (mode == NFSV4OPEN_ACCESSWRITE || 1235 nfstest_openallsetattr)) { 1236 /* 1237 * No Open stateid, so try and open the file 1238 * now. 1239 */ 1240 if (mode == NFSV4OPEN_ACCESSWRITE) 1241 openerr = nfsrpc_open(vp, FWRITE, cred, 1242 p); 1243 else 1244 openerr = nfsrpc_open(vp, FREAD, cred, 1245 p); 1246 if (!openerr) 1247 (void) nfscl_getstateid(vp, 1248 nfhp->nfh_fh, nfhp->nfh_len, 1249 mode, 0, cred, p, &stateid, &lckp); 1250 } 1251 } 1252 if (vap != NULL) 1253 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1254 rnap, attrflagp, stuff); 1255 else 1256 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1257 stuff); 1258 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1259 NFSLOCKMNT(nmp); 1260 nmp->nm_state |= NFSSTA_OPENMODE; 1261 NFSUNLOCKMNT(nmp); 1262 } 1263 if (error == NFSERR_STALESTATEID) 1264 nfscl_initiate_recovery(nmp->nm_clp); 1265 if (lckp != NULL) 1266 nfscl_lockderef(lckp); 1267 if (!openerr) 1268 (void) nfsrpc_close(vp, 0, p); 1269 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1270 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1271 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1272 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1273 } else if ((error == NFSERR_EXPIRED || 1274 error == NFSERR_BADSTATEID) && clidrev != 0) { 1275 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1276 } 1277 retrycnt++; 1278 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1279 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1280 error == NFSERR_BADSESSION || 1281 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1282 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1283 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1284 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1285 retrycnt < 4)); 1286 if (error && retrycnt >= 4) 1287 error = EIO; 1288 return (error); 1289 } 1290 1291 static int 1292 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1293 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1294 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1295 { 1296 u_int32_t *tl; 1297 struct nfsrv_descript nfsd, *nd = &nfsd; 1298 int error; 1299 nfsattrbit_t attrbits; 1300 1301 *attrflagp = 0; 1302 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1303 if (nd->nd_flag & ND_NFSV4) 1304 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1305 vap->va_type = vnode_vtype(vp); 1306 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1307 if (nd->nd_flag & ND_NFSV3) { 1308 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1309 *tl = newnfs_false; 1310 } else if (nd->nd_flag & ND_NFSV4) { 1311 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1312 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1313 NFSGETATTR_ATTRBIT(&attrbits); 1314 (void) nfsrv_putattrbit(nd, &attrbits); 1315 } 1316 error = nfscl_request(nd, vp, p, cred, stuff); 1317 if (error) 1318 return (error); 1319 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1320 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1321 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1322 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1323 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1324 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1325 mbuf_freem(nd->nd_mrep); 1326 if (nd->nd_repstat && !error) 1327 error = nd->nd_repstat; 1328 return (error); 1329 } 1330 1331 /* 1332 * nfs lookup rpc 1333 */ 1334 int 1335 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1336 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1337 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1338 { 1339 u_int32_t *tl; 1340 struct nfsrv_descript nfsd, *nd = &nfsd; 1341 struct nfsmount *nmp; 1342 struct nfsnode *np; 1343 struct nfsfh *nfhp; 1344 nfsattrbit_t attrbits; 1345 int error = 0, lookupp = 0; 1346 1347 *attrflagp = 0; 1348 *dattrflagp = 0; 1349 if (vnode_vtype(dvp) != VDIR) 1350 return (ENOTDIR); 1351 nmp = VFSTONFS(vnode_mount(dvp)); 1352 if (len > NFS_MAXNAMLEN) 1353 return (ENAMETOOLONG); 1354 if (NFSHASNFSV4(nmp) && len == 1 && 1355 name[0] == '.') { 1356 /* 1357 * Just return the current dir's fh. 1358 */ 1359 np = VTONFS(dvp); 1360 nfhp = malloc(sizeof (struct nfsfh) + 1361 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1362 nfhp->nfh_len = np->n_fhp->nfh_len; 1363 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1364 *nfhpp = nfhp; 1365 return (0); 1366 } 1367 if (NFSHASNFSV4(nmp) && len == 2 && 1368 name[0] == '.' && name[1] == '.') { 1369 lookupp = 1; 1370 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1371 } else { 1372 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1373 (void) nfsm_strtom(nd, name, len); 1374 } 1375 if (nd->nd_flag & ND_NFSV4) { 1376 NFSGETATTR_ATTRBIT(&attrbits); 1377 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1378 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1379 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1380 (void) nfsrv_putattrbit(nd, &attrbits); 1381 } 1382 error = nfscl_request(nd, dvp, p, cred, stuff); 1383 if (error) 1384 return (error); 1385 if (nd->nd_repstat) { 1386 /* 1387 * When an NFSv4 Lookupp returns ENOENT, it means that 1388 * the lookup is at the root of an fs, so return this dir. 1389 */ 1390 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1391 np = VTONFS(dvp); 1392 nfhp = malloc(sizeof (struct nfsfh) + 1393 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1394 nfhp->nfh_len = np->n_fhp->nfh_len; 1395 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1396 *nfhpp = nfhp; 1397 mbuf_freem(nd->nd_mrep); 1398 return (0); 1399 } 1400 if (nd->nd_flag & ND_NFSV3) 1401 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1402 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1403 ND_NFSV4) { 1404 /* Load the directory attributes. */ 1405 error = nfsm_loadattr(nd, dnap); 1406 if (error == 0) 1407 *dattrflagp = 1; 1408 } 1409 goto nfsmout; 1410 } 1411 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1412 /* Load the directory attributes. */ 1413 error = nfsm_loadattr(nd, dnap); 1414 if (error != 0) 1415 goto nfsmout; 1416 *dattrflagp = 1; 1417 /* Skip over the Lookup and GetFH operation status values. */ 1418 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1419 } 1420 error = nfsm_getfh(nd, nfhpp); 1421 if (error) 1422 goto nfsmout; 1423 1424 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1425 if ((nd->nd_flag & ND_NFSV3) && !error) 1426 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1427 nfsmout: 1428 mbuf_freem(nd->nd_mrep); 1429 if (!error && nd->nd_repstat) 1430 error = nd->nd_repstat; 1431 return (error); 1432 } 1433 1434 /* 1435 * Do a readlink rpc. 1436 */ 1437 int 1438 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1439 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1440 { 1441 u_int32_t *tl; 1442 struct nfsrv_descript nfsd, *nd = &nfsd; 1443 struct nfsnode *np = VTONFS(vp); 1444 nfsattrbit_t attrbits; 1445 int error, len, cangetattr = 1; 1446 1447 *attrflagp = 0; 1448 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1449 if (nd->nd_flag & ND_NFSV4) { 1450 /* 1451 * And do a Getattr op. 1452 */ 1453 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1454 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1455 NFSGETATTR_ATTRBIT(&attrbits); 1456 (void) nfsrv_putattrbit(nd, &attrbits); 1457 } 1458 error = nfscl_request(nd, vp, p, cred, stuff); 1459 if (error) 1460 return (error); 1461 if (nd->nd_flag & ND_NFSV3) 1462 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1463 if (!nd->nd_repstat && !error) { 1464 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1465 /* 1466 * This seems weird to me, but must have been added to 1467 * FreeBSD for some reason. The only thing I can think of 1468 * is that there was/is some server that replies with 1469 * more link data than it should? 1470 */ 1471 if (len == NFS_MAXPATHLEN) { 1472 NFSLOCKNODE(np); 1473 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1474 len = np->n_size; 1475 cangetattr = 0; 1476 } 1477 NFSUNLOCKNODE(np); 1478 } 1479 error = nfsm_mbufuio(nd, uiop, len); 1480 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1481 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1482 } 1483 if (nd->nd_repstat && !error) 1484 error = nd->nd_repstat; 1485 nfsmout: 1486 mbuf_freem(nd->nd_mrep); 1487 return (error); 1488 } 1489 1490 /* 1491 * Read operation. 1492 */ 1493 int 1494 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1495 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1496 { 1497 int error, expireret = 0, retrycnt; 1498 u_int32_t clidrev = 0; 1499 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1500 struct nfsnode *np = VTONFS(vp); 1501 struct ucred *newcred; 1502 struct nfsfh *nfhp = NULL; 1503 nfsv4stateid_t stateid; 1504 void *lckp; 1505 1506 if (nmp->nm_clp != NULL) 1507 clidrev = nmp->nm_clp->nfsc_clientidrev; 1508 newcred = cred; 1509 if (NFSHASNFSV4(nmp)) { 1510 nfhp = np->n_fhp; 1511 newcred = NFSNEWCRED(cred); 1512 } 1513 retrycnt = 0; 1514 do { 1515 lckp = NULL; 1516 if (NFSHASNFSV4(nmp)) 1517 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1518 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1519 &lckp); 1520 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1521 attrflagp, stuff); 1522 if (error == NFSERR_OPENMODE) { 1523 NFSLOCKMNT(nmp); 1524 nmp->nm_state |= NFSSTA_OPENMODE; 1525 NFSUNLOCKMNT(nmp); 1526 } 1527 if (error == NFSERR_STALESTATEID) 1528 nfscl_initiate_recovery(nmp->nm_clp); 1529 if (lckp != NULL) 1530 nfscl_lockderef(lckp); 1531 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1532 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1533 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1534 (void) nfs_catnap(PZERO, error, "nfs_read"); 1535 } else if ((error == NFSERR_EXPIRED || 1536 error == NFSERR_BADSTATEID) && clidrev != 0) { 1537 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1538 } 1539 retrycnt++; 1540 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1541 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1542 error == NFSERR_BADSESSION || 1543 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1544 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1545 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1546 (error == NFSERR_OPENMODE && retrycnt < 4)); 1547 if (error && retrycnt >= 4) 1548 error = EIO; 1549 if (NFSHASNFSV4(nmp)) 1550 NFSFREECRED(newcred); 1551 return (error); 1552 } 1553 1554 /* 1555 * The actual read RPC. 1556 */ 1557 static int 1558 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1559 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1560 int *attrflagp, void *stuff) 1561 { 1562 u_int32_t *tl; 1563 int error = 0, len, retlen, tsiz, eof = 0; 1564 struct nfsrv_descript nfsd; 1565 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1566 struct nfsrv_descript *nd = &nfsd; 1567 int rsize; 1568 off_t tmp_off; 1569 1570 *attrflagp = 0; 1571 tsiz = uio_uio_resid(uiop); 1572 tmp_off = uiop->uio_offset + tsiz; 1573 NFSLOCKMNT(nmp); 1574 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1575 NFSUNLOCKMNT(nmp); 1576 return (EFBIG); 1577 } 1578 rsize = nmp->nm_rsize; 1579 NFSUNLOCKMNT(nmp); 1580 nd->nd_mrep = NULL; 1581 while (tsiz > 0) { 1582 *attrflagp = 0; 1583 len = (tsiz > rsize) ? rsize : tsiz; 1584 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1585 if (nd->nd_flag & ND_NFSV4) 1586 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1587 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1588 if (nd->nd_flag & ND_NFSV2) { 1589 *tl++ = txdr_unsigned(uiop->uio_offset); 1590 *tl++ = txdr_unsigned(len); 1591 *tl = 0; 1592 } else { 1593 txdr_hyper(uiop->uio_offset, tl); 1594 *(tl + 2) = txdr_unsigned(len); 1595 } 1596 /* 1597 * Since I can't do a Getattr for NFSv4 for Write, there 1598 * doesn't seem any point in doing one here, either. 1599 * (See the comment in nfsrpc_writerpc() for more info.) 1600 */ 1601 error = nfscl_request(nd, vp, p, cred, stuff); 1602 if (error) 1603 return (error); 1604 if (nd->nd_flag & ND_NFSV3) { 1605 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1606 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1607 error = nfsm_loadattr(nd, nap); 1608 if (!error) 1609 *attrflagp = 1; 1610 } 1611 if (nd->nd_repstat || error) { 1612 if (!error) 1613 error = nd->nd_repstat; 1614 goto nfsmout; 1615 } 1616 if (nd->nd_flag & ND_NFSV3) { 1617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1618 eof = fxdr_unsigned(int, *(tl + 1)); 1619 } else if (nd->nd_flag & ND_NFSV4) { 1620 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1621 eof = fxdr_unsigned(int, *tl); 1622 } 1623 NFSM_STRSIZ(retlen, len); 1624 error = nfsm_mbufuio(nd, uiop, retlen); 1625 if (error) 1626 goto nfsmout; 1627 mbuf_freem(nd->nd_mrep); 1628 nd->nd_mrep = NULL; 1629 tsiz -= retlen; 1630 if (!(nd->nd_flag & ND_NFSV2)) { 1631 if (eof || retlen == 0) 1632 tsiz = 0; 1633 } else if (retlen < len) 1634 tsiz = 0; 1635 } 1636 return (0); 1637 nfsmout: 1638 if (nd->nd_mrep != NULL) 1639 mbuf_freem(nd->nd_mrep); 1640 return (error); 1641 } 1642 1643 /* 1644 * nfs write operation 1645 * When called_from_strategy != 0, it should return EIO for an error that 1646 * indicates recovery is in progress, so that the buffer will be left 1647 * dirty and be written back to the server later. If it loops around, 1648 * the recovery thread could get stuck waiting for the buffer and recovery 1649 * will then deadlock. 1650 */ 1651 int 1652 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1653 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1654 void *stuff, int called_from_strategy) 1655 { 1656 int error, expireret = 0, retrycnt, nostateid; 1657 u_int32_t clidrev = 0; 1658 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1659 struct nfsnode *np = VTONFS(vp); 1660 struct ucred *newcred; 1661 struct nfsfh *nfhp = NULL; 1662 nfsv4stateid_t stateid; 1663 void *lckp; 1664 1665 KASSERT(*must_commit >= 0 && *must_commit <= 2, 1666 ("nfsrpc_write: must_commit out of range=%d", *must_commit)); 1667 if (nmp->nm_clp != NULL) 1668 clidrev = nmp->nm_clp->nfsc_clientidrev; 1669 newcred = cred; 1670 if (NFSHASNFSV4(nmp)) { 1671 newcred = NFSNEWCRED(cred); 1672 nfhp = np->n_fhp; 1673 } 1674 retrycnt = 0; 1675 do { 1676 lckp = NULL; 1677 nostateid = 0; 1678 if (NFSHASNFSV4(nmp)) { 1679 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1680 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1681 &lckp); 1682 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1683 stateid.other[2] == 0) { 1684 nostateid = 1; 1685 NFSCL_DEBUG(1, "stateid0 in write\n"); 1686 } 1687 } 1688 1689 /* 1690 * If there is no stateid for NFSv4, it means this is an 1691 * extraneous write after close. Basically a poorly 1692 * implemented buffer cache. Just don't do the write. 1693 */ 1694 if (nostateid) 1695 error = 0; 1696 else 1697 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1698 newcred, &stateid, p, nap, attrflagp, stuff); 1699 if (error == NFSERR_STALESTATEID) 1700 nfscl_initiate_recovery(nmp->nm_clp); 1701 if (lckp != NULL) 1702 nfscl_lockderef(lckp); 1703 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1704 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1705 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1706 (void) nfs_catnap(PZERO, error, "nfs_write"); 1707 } else if ((error == NFSERR_EXPIRED || 1708 error == NFSERR_BADSTATEID) && clidrev != 0) { 1709 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1710 } 1711 retrycnt++; 1712 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1713 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1714 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1715 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1716 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1717 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1718 if (error != 0 && (retrycnt >= 4 || 1719 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1720 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1721 error = EIO; 1722 if (NFSHASNFSV4(nmp)) 1723 NFSFREECRED(newcred); 1724 return (error); 1725 } 1726 1727 /* 1728 * The actual write RPC. 1729 */ 1730 static int 1731 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1732 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1733 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1734 { 1735 u_int32_t *tl; 1736 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1737 struct nfsnode *np = VTONFS(vp); 1738 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1739 int wccflag = 0, wsize; 1740 int32_t backup; 1741 struct nfsrv_descript nfsd; 1742 struct nfsrv_descript *nd = &nfsd; 1743 nfsattrbit_t attrbits; 1744 off_t tmp_off; 1745 1746 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1747 *attrflagp = 0; 1748 tsiz = uio_uio_resid(uiop); 1749 tmp_off = uiop->uio_offset + tsiz; 1750 NFSLOCKMNT(nmp); 1751 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1752 NFSUNLOCKMNT(nmp); 1753 return (EFBIG); 1754 } 1755 wsize = nmp->nm_wsize; 1756 NFSUNLOCKMNT(nmp); 1757 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1758 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1759 while (tsiz > 0) { 1760 *attrflagp = 0; 1761 len = (tsiz > wsize) ? wsize : tsiz; 1762 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1763 if (nd->nd_flag & ND_NFSV4) { 1764 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1765 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1766 txdr_hyper(uiop->uio_offset, tl); 1767 tl += 2; 1768 *tl++ = txdr_unsigned(*iomode); 1769 *tl = txdr_unsigned(len); 1770 } else if (nd->nd_flag & ND_NFSV3) { 1771 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1772 txdr_hyper(uiop->uio_offset, tl); 1773 tl += 2; 1774 *tl++ = txdr_unsigned(len); 1775 *tl++ = txdr_unsigned(*iomode); 1776 *tl = txdr_unsigned(len); 1777 } else { 1778 u_int32_t x; 1779 1780 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1781 /* 1782 * Not sure why someone changed this, since the 1783 * RFC clearly states that "beginoffset" and 1784 * "totalcount" are ignored, but it wouldn't 1785 * surprise me if there's a busted server out there. 1786 */ 1787 /* Set both "begin" and "current" to non-garbage. */ 1788 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1789 *tl++ = x; /* "begin offset" */ 1790 *tl++ = x; /* "current offset" */ 1791 x = txdr_unsigned(len); 1792 *tl++ = x; /* total to this offset */ 1793 *tl = x; /* size of this write */ 1794 1795 } 1796 nfsm_uiombuf(nd, uiop, len); 1797 /* 1798 * Although it is tempting to do a normal Getattr Op in the 1799 * NFSv4 compound, the result can be a nearly hung client 1800 * system if the Getattr asks for Owner and/or OwnerGroup. 1801 * It occurs when the client can't map either the Owner or 1802 * Owner_group name in the Getattr reply to a uid/gid. When 1803 * there is a cache miss, the kernel does an upcall to the 1804 * nfsuserd. Then, it can try and read the local /etc/passwd 1805 * or /etc/group file. It can then block in getnewbuf(), 1806 * waiting for dirty writes to be pushed to the NFS server. 1807 * The only reason this doesn't result in a complete 1808 * deadlock, is that the upcall times out and allows 1809 * the write to complete. However, progress is so slow 1810 * that it might just as well be deadlocked. 1811 * As such, we get the rest of the attributes, but not 1812 * Owner or Owner_group. 1813 * nb: nfscl_loadattrcache() needs to be told that these 1814 * partial attributes from a write rpc are being 1815 * passed in, via a argument flag. 1816 */ 1817 if (nd->nd_flag & ND_NFSV4) { 1818 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1819 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1820 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1821 (void) nfsrv_putattrbit(nd, &attrbits); 1822 } 1823 error = nfscl_request(nd, vp, p, cred, stuff); 1824 if (error) 1825 return (error); 1826 if (nd->nd_repstat) { 1827 /* 1828 * In case the rpc gets retried, roll 1829 * the uio fileds changed by nfsm_uiombuf() 1830 * back. 1831 */ 1832 uiop->uio_offset -= len; 1833 uio_uio_resid_add(uiop, len); 1834 uio_iov_base_add(uiop, -len); 1835 uio_iov_len_add(uiop, len); 1836 } 1837 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1838 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1839 &wccflag, stuff); 1840 if (error) 1841 goto nfsmout; 1842 } 1843 if (!nd->nd_repstat) { 1844 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1845 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1846 + NFSX_VERF); 1847 rlen = fxdr_unsigned(int, *tl++); 1848 if (rlen == 0) { 1849 error = NFSERR_IO; 1850 goto nfsmout; 1851 } else if (rlen < len) { 1852 backup = len - rlen; 1853 uio_iov_base_add(uiop, -(backup)); 1854 uio_iov_len_add(uiop, backup); 1855 uiop->uio_offset -= backup; 1856 uio_uio_resid_add(uiop, backup); 1857 len = rlen; 1858 } 1859 commit = fxdr_unsigned(int, *tl++); 1860 1861 /* 1862 * Return the lowest commitment level 1863 * obtained by any of the RPCs. 1864 */ 1865 if (committed == NFSWRITE_FILESYNC) 1866 committed = commit; 1867 else if (committed == NFSWRITE_DATASYNC && 1868 commit == NFSWRITE_UNSTABLE) 1869 committed = commit; 1870 NFSLOCKMNT(nmp); 1871 if (!NFSHASWRITEVERF(nmp)) { 1872 NFSBCOPY((caddr_t)tl, 1873 (caddr_t)&nmp->nm_verf[0], 1874 NFSX_VERF); 1875 NFSSETWRITEVERF(nmp); 1876 } else if (NFSBCMP(tl, nmp->nm_verf, 1877 NFSX_VERF) && *must_commit != 2) { 1878 *must_commit = 1; 1879 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1880 } 1881 NFSUNLOCKMNT(nmp); 1882 } 1883 if (nd->nd_flag & ND_NFSV4) 1884 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1885 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1886 error = nfsm_loadattr(nd, nap); 1887 if (!error) 1888 *attrflagp = NFS_LATTR_NOSHRINK; 1889 } 1890 } else { 1891 error = nd->nd_repstat; 1892 } 1893 if (error) 1894 goto nfsmout; 1895 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1896 mbuf_freem(nd->nd_mrep); 1897 nd->nd_mrep = NULL; 1898 tsiz -= len; 1899 } 1900 nfsmout: 1901 if (nd->nd_mrep != NULL) 1902 mbuf_freem(nd->nd_mrep); 1903 *iomode = committed; 1904 if (nd->nd_repstat && !error) 1905 error = nd->nd_repstat; 1906 return (error); 1907 } 1908 1909 /* 1910 * nfs mknod rpc 1911 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1912 * mode set to specify the file type and the size field for rdev. 1913 */ 1914 int 1915 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1916 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1917 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1918 int *attrflagp, int *dattrflagp, void *dstuff) 1919 { 1920 u_int32_t *tl; 1921 int error = 0; 1922 struct nfsrv_descript nfsd, *nd = &nfsd; 1923 nfsattrbit_t attrbits; 1924 1925 *nfhpp = NULL; 1926 *attrflagp = 0; 1927 *dattrflagp = 0; 1928 if (namelen > NFS_MAXNAMLEN) 1929 return (ENAMETOOLONG); 1930 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1931 if (nd->nd_flag & ND_NFSV4) { 1932 if (vtyp == VBLK || vtyp == VCHR) { 1933 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1934 *tl++ = vtonfsv34_type(vtyp); 1935 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1936 *tl = txdr_unsigned(NFSMINOR(rdev)); 1937 } else { 1938 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1939 *tl = vtonfsv34_type(vtyp); 1940 } 1941 } 1942 (void) nfsm_strtom(nd, name, namelen); 1943 if (nd->nd_flag & ND_NFSV3) { 1944 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1945 *tl = vtonfsv34_type(vtyp); 1946 } 1947 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1948 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1949 if ((nd->nd_flag & ND_NFSV3) && 1950 (vtyp == VCHR || vtyp == VBLK)) { 1951 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1952 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1953 *tl = txdr_unsigned(NFSMINOR(rdev)); 1954 } 1955 if (nd->nd_flag & ND_NFSV4) { 1956 NFSGETATTR_ATTRBIT(&attrbits); 1957 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1958 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1959 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1960 (void) nfsrv_putattrbit(nd, &attrbits); 1961 } 1962 if (nd->nd_flag & ND_NFSV2) 1963 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1964 error = nfscl_request(nd, dvp, p, cred, dstuff); 1965 if (error) 1966 return (error); 1967 if (nd->nd_flag & ND_NFSV4) 1968 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1969 if (!nd->nd_repstat) { 1970 if (nd->nd_flag & ND_NFSV4) { 1971 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1972 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1973 if (error) 1974 goto nfsmout; 1975 } 1976 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1977 if (error) 1978 goto nfsmout; 1979 } 1980 if (nd->nd_flag & ND_NFSV3) 1981 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1982 if (!error && nd->nd_repstat) 1983 error = nd->nd_repstat; 1984 nfsmout: 1985 mbuf_freem(nd->nd_mrep); 1986 return (error); 1987 } 1988 1989 /* 1990 * nfs file create call 1991 * Mostly just call the approriate routine. (I separated out v4, so that 1992 * error recovery wouldn't be as difficult.) 1993 */ 1994 int 1995 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1996 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1997 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1998 int *attrflagp, int *dattrflagp, void *dstuff) 1999 { 2000 int error = 0, newone, expireret = 0, retrycnt, unlocked; 2001 struct nfsclowner *owp; 2002 struct nfscldeleg *dp; 2003 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 2004 u_int32_t clidrev; 2005 2006 if (NFSHASNFSV4(nmp)) { 2007 retrycnt = 0; 2008 do { 2009 dp = NULL; 2010 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 2011 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 2012 NULL, 1, true); 2013 if (error) 2014 return (error); 2015 if (nmp->nm_clp != NULL) 2016 clidrev = nmp->nm_clp->nfsc_clientidrev; 2017 else 2018 clidrev = 0; 2019 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 2020 nfs_numnfscbd == 0 || retrycnt > 0) 2021 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 2022 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2023 attrflagp, dattrflagp, dstuff, &unlocked); 2024 else 2025 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 2026 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2027 attrflagp, dattrflagp, dstuff, &unlocked); 2028 /* 2029 * There is no need to invalidate cached attributes here, 2030 * since new post-delegation issue attributes are always 2031 * returned by nfsrpc_createv4() and these will update the 2032 * attribute cache. 2033 */ 2034 if (dp != NULL) 2035 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2036 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2037 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2038 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2039 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2040 error == NFSERR_BADSESSION) { 2041 (void) nfs_catnap(PZERO, error, "nfs_open"); 2042 } else if ((error == NFSERR_EXPIRED || 2043 error == NFSERR_BADSTATEID) && clidrev != 0) { 2044 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2045 retrycnt++; 2046 } 2047 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2048 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2049 error == NFSERR_BADSESSION || 2050 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2051 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2052 if (error && retrycnt >= 4) 2053 error = EIO; 2054 } else { 2055 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2056 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2057 dstuff); 2058 } 2059 return (error); 2060 } 2061 2062 /* 2063 * The create rpc for v2 and 3. 2064 */ 2065 static int 2066 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2067 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2068 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2069 int *attrflagp, int *dattrflagp, void *dstuff) 2070 { 2071 u_int32_t *tl; 2072 int error = 0; 2073 struct nfsrv_descript nfsd, *nd = &nfsd; 2074 2075 *nfhpp = NULL; 2076 *attrflagp = 0; 2077 *dattrflagp = 0; 2078 if (namelen > NFS_MAXNAMLEN) 2079 return (ENAMETOOLONG); 2080 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2081 (void) nfsm_strtom(nd, name, namelen); 2082 if (nd->nd_flag & ND_NFSV3) { 2083 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2084 if (fmode & O_EXCL) { 2085 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2086 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2087 *tl++ = cverf.lval[0]; 2088 *tl = cverf.lval[1]; 2089 } else { 2090 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2091 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2092 } 2093 } else { 2094 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2095 } 2096 error = nfscl_request(nd, dvp, p, cred, dstuff); 2097 if (error) 2098 return (error); 2099 if (nd->nd_repstat == 0) { 2100 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2101 if (error) 2102 goto nfsmout; 2103 } 2104 if (nd->nd_flag & ND_NFSV3) 2105 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2106 if (nd->nd_repstat != 0 && error == 0) 2107 error = nd->nd_repstat; 2108 nfsmout: 2109 mbuf_freem(nd->nd_mrep); 2110 return (error); 2111 } 2112 2113 static int 2114 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2115 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2116 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2117 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2118 int *dattrflagp, void *dstuff, int *unlockedp) 2119 { 2120 u_int32_t *tl; 2121 int error = 0, deleg, newone, ret, acesize, limitby; 2122 struct nfsrv_descript nfsd, *nd = &nfsd; 2123 struct nfsclopen *op; 2124 struct nfscldeleg *dp = NULL; 2125 struct nfsnode *np; 2126 struct nfsfh *nfhp; 2127 nfsattrbit_t attrbits; 2128 nfsv4stateid_t stateid; 2129 u_int32_t rflags; 2130 struct nfsmount *nmp; 2131 struct nfsclsession *tsep; 2132 2133 nmp = VFSTONFS(dvp->v_mount); 2134 np = VTONFS(dvp); 2135 *unlockedp = 0; 2136 *nfhpp = NULL; 2137 *dpp = NULL; 2138 *attrflagp = 0; 2139 *dattrflagp = 0; 2140 if (namelen > NFS_MAXNAMLEN) 2141 return (ENAMETOOLONG); 2142 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2143 /* 2144 * For V4, this is actually an Open op. 2145 */ 2146 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2147 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2148 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2149 NFSV4OPEN_ACCESSREAD); 2150 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2151 tsep = nfsmnt_mdssession(nmp); 2152 *tl++ = tsep->nfsess_clientid.lval[0]; 2153 *tl = tsep->nfsess_clientid.lval[1]; 2154 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2155 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2156 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2157 if (fmode & O_EXCL) { 2158 if (NFSHASNFSV4N(nmp)) { 2159 if (NFSHASSESSPERSIST(nmp)) { 2160 /* Use GUARDED for persistent sessions. */ 2161 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2162 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2163 } else { 2164 /* Otherwise, use EXCLUSIVE4_1. */ 2165 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2166 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2167 *tl++ = cverf.lval[0]; 2168 *tl = cverf.lval[1]; 2169 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2170 } 2171 } else { 2172 /* NFSv4.0 */ 2173 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2174 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2175 *tl++ = cverf.lval[0]; 2176 *tl = cverf.lval[1]; 2177 } 2178 } else { 2179 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2180 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2181 } 2182 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2183 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2184 (void) nfsm_strtom(nd, name, namelen); 2185 /* Get the new file's handle and attributes. */ 2186 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2187 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2188 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2189 NFSGETATTR_ATTRBIT(&attrbits); 2190 (void) nfsrv_putattrbit(nd, &attrbits); 2191 /* Get the directory's post-op attributes. */ 2192 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2193 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2194 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2195 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2196 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2197 (void) nfsrv_putattrbit(nd, &attrbits); 2198 error = nfscl_request(nd, dvp, p, cred, dstuff); 2199 if (error) 2200 return (error); 2201 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2202 if (nd->nd_repstat == 0) { 2203 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2204 6 * NFSX_UNSIGNED); 2205 stateid.seqid = *tl++; 2206 stateid.other[0] = *tl++; 2207 stateid.other[1] = *tl++; 2208 stateid.other[2] = *tl; 2209 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2210 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2211 if (error) 2212 goto nfsmout; 2213 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2214 deleg = fxdr_unsigned(int, *tl); 2215 if (deleg == NFSV4OPEN_DELEGATEREAD || 2216 deleg == NFSV4OPEN_DELEGATEWRITE) { 2217 if (!(owp->nfsow_clp->nfsc_flags & 2218 NFSCLFLAGS_FIRSTDELEG)) 2219 owp->nfsow_clp->nfsc_flags |= 2220 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2221 dp = malloc( 2222 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2223 M_NFSCLDELEG, M_WAITOK); 2224 LIST_INIT(&dp->nfsdl_owner); 2225 LIST_INIT(&dp->nfsdl_lock); 2226 dp->nfsdl_clp = owp->nfsow_clp; 2227 newnfs_copyincred(cred, &dp->nfsdl_cred); 2228 nfscl_lockinit(&dp->nfsdl_rwlock); 2229 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2230 NFSX_UNSIGNED); 2231 dp->nfsdl_stateid.seqid = *tl++; 2232 dp->nfsdl_stateid.other[0] = *tl++; 2233 dp->nfsdl_stateid.other[1] = *tl++; 2234 dp->nfsdl_stateid.other[2] = *tl++; 2235 ret = fxdr_unsigned(int, *tl); 2236 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2237 dp->nfsdl_flags = NFSCLDL_WRITE; 2238 /* 2239 * Indicates how much the file can grow. 2240 */ 2241 NFSM_DISSECT(tl, u_int32_t *, 2242 3 * NFSX_UNSIGNED); 2243 limitby = fxdr_unsigned(int, *tl++); 2244 switch (limitby) { 2245 case NFSV4OPEN_LIMITSIZE: 2246 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2247 break; 2248 case NFSV4OPEN_LIMITBLOCKS: 2249 dp->nfsdl_sizelimit = 2250 fxdr_unsigned(u_int64_t, *tl++); 2251 dp->nfsdl_sizelimit *= 2252 fxdr_unsigned(u_int64_t, *tl); 2253 break; 2254 default: 2255 error = NFSERR_BADXDR; 2256 goto nfsmout; 2257 } 2258 } else { 2259 dp->nfsdl_flags = NFSCLDL_READ; 2260 } 2261 if (ret) 2262 dp->nfsdl_flags |= NFSCLDL_RECALL; 2263 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2264 &acesize, p); 2265 if (error) 2266 goto nfsmout; 2267 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2268 error = NFSERR_BADXDR; 2269 goto nfsmout; 2270 } 2271 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2272 if (error) 2273 goto nfsmout; 2274 /* Get rid of the PutFH and Getattr status values. */ 2275 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2276 /* Load the directory attributes. */ 2277 error = nfsm_loadattr(nd, dnap); 2278 if (error) 2279 goto nfsmout; 2280 *dattrflagp = 1; 2281 if (dp != NULL && *attrflagp) { 2282 dp->nfsdl_change = nnap->na_filerev; 2283 dp->nfsdl_modtime = nnap->na_mtime; 2284 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2285 } 2286 /* 2287 * We can now complete the Open state. 2288 */ 2289 nfhp = *nfhpp; 2290 if (dp != NULL) { 2291 dp->nfsdl_fhlen = nfhp->nfh_len; 2292 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2293 } 2294 /* 2295 * Get an Open structure that will be 2296 * attached to the OpenOwner, acquired already. 2297 */ 2298 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2299 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2300 cred, p, NULL, &op, &newone, NULL, 0, false); 2301 if (error) 2302 goto nfsmout; 2303 op->nfso_stateid = stateid; 2304 newnfs_copyincred(cred, &op->nfso_cred); 2305 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2306 do { 2307 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2308 nfhp->nfh_len, op, cred, p); 2309 if (ret == NFSERR_DELAY) 2310 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2311 } while (ret == NFSERR_DELAY); 2312 error = ret; 2313 } 2314 2315 /* 2316 * If the server is handing out delegations, but we didn't 2317 * get one because an OpenConfirm was required, try the 2318 * Open again, to get a delegation. This is a harmless no-op, 2319 * from a server's point of view. 2320 */ 2321 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2322 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2323 !error && dp == NULL) { 2324 do { 2325 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2326 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2327 nfhp->nfh_fh, nfhp->nfh_len, 2328 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2329 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2330 if (ret == NFSERR_DELAY) 2331 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2332 } while (ret == NFSERR_DELAY); 2333 if (ret) { 2334 if (dp != NULL) { 2335 free(dp, M_NFSCLDELEG); 2336 dp = NULL; 2337 } 2338 if (ret == NFSERR_STALECLIENTID || 2339 ret == NFSERR_STALEDONTRECOVER || 2340 ret == NFSERR_BADSESSION) 2341 error = ret; 2342 } 2343 } 2344 nfscl_openrelease(nmp, op, error, newone); 2345 *unlockedp = 1; 2346 } 2347 if (nd->nd_repstat != 0 && error == 0) 2348 error = nd->nd_repstat; 2349 if (error == NFSERR_STALECLIENTID) 2350 nfscl_initiate_recovery(owp->nfsow_clp); 2351 nfsmout: 2352 if (!error) 2353 *dpp = dp; 2354 else if (dp != NULL) 2355 free(dp, M_NFSCLDELEG); 2356 mbuf_freem(nd->nd_mrep); 2357 return (error); 2358 } 2359 2360 /* 2361 * Nfs remove rpc 2362 */ 2363 int 2364 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2365 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2366 void *dstuff) 2367 { 2368 u_int32_t *tl; 2369 struct nfsrv_descript nfsd, *nd = &nfsd; 2370 struct nfsnode *np; 2371 struct nfsmount *nmp; 2372 nfsv4stateid_t dstateid; 2373 int error, ret = 0, i; 2374 2375 *dattrflagp = 0; 2376 if (namelen > NFS_MAXNAMLEN) 2377 return (ENAMETOOLONG); 2378 nmp = VFSTONFS(vnode_mount(dvp)); 2379 tryagain: 2380 if (NFSHASNFSV4(nmp) && ret == 0) { 2381 ret = nfscl_removedeleg(vp, p, &dstateid); 2382 if (ret == 1) { 2383 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2384 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2385 NFSX_UNSIGNED); 2386 if (NFSHASNFSV4N(nmp)) 2387 *tl++ = 0; 2388 else 2389 *tl++ = dstateid.seqid; 2390 *tl++ = dstateid.other[0]; 2391 *tl++ = dstateid.other[1]; 2392 *tl++ = dstateid.other[2]; 2393 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2394 np = VTONFS(dvp); 2395 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2396 np->n_fhp->nfh_len, 0); 2397 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2398 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2399 } 2400 } else { 2401 ret = 0; 2402 } 2403 if (ret == 0) 2404 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2405 (void) nfsm_strtom(nd, name, namelen); 2406 error = nfscl_request(nd, dvp, p, cred, dstuff); 2407 if (error) 2408 return (error); 2409 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2410 /* For NFSv4, parse out any Delereturn replies. */ 2411 if (ret > 0 && nd->nd_repstat != 0 && 2412 (nd->nd_flag & ND_NOMOREDATA)) { 2413 /* 2414 * If the Delegreturn failed, try again without 2415 * it. The server will Recall, as required. 2416 */ 2417 mbuf_freem(nd->nd_mrep); 2418 goto tryagain; 2419 } 2420 for (i = 0; i < (ret * 2); i++) { 2421 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2422 ND_NFSV4) { 2423 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2424 if (*(tl + 1)) 2425 nd->nd_flag |= ND_NOMOREDATA; 2426 } 2427 } 2428 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2429 } 2430 if (nd->nd_repstat && !error) 2431 error = nd->nd_repstat; 2432 nfsmout: 2433 mbuf_freem(nd->nd_mrep); 2434 return (error); 2435 } 2436 2437 /* 2438 * Do an nfs rename rpc. 2439 */ 2440 int 2441 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2442 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2443 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2444 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2445 { 2446 u_int32_t *tl; 2447 struct nfsrv_descript nfsd, *nd = &nfsd; 2448 struct nfsmount *nmp; 2449 struct nfsnode *np; 2450 nfsattrbit_t attrbits; 2451 nfsv4stateid_t fdstateid, tdstateid; 2452 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2453 2454 *fattrflagp = 0; 2455 *tattrflagp = 0; 2456 nmp = VFSTONFS(vnode_mount(fdvp)); 2457 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2458 return (ENAMETOOLONG); 2459 tryagain: 2460 if (NFSHASNFSV4(nmp) && ret == 0) { 2461 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2462 &tdstateid, &gottd, p); 2463 if (gotfd && gottd) { 2464 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2465 } else if (gotfd) { 2466 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2467 } else if (gottd) { 2468 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2469 } 2470 if (gotfd) { 2471 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2472 if (NFSHASNFSV4N(nmp)) 2473 *tl++ = 0; 2474 else 2475 *tl++ = fdstateid.seqid; 2476 *tl++ = fdstateid.other[0]; 2477 *tl++ = fdstateid.other[1]; 2478 *tl = fdstateid.other[2]; 2479 if (gottd) { 2480 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2481 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2482 np = VTONFS(tvp); 2483 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2484 np->n_fhp->nfh_len, 0); 2485 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2486 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2487 } 2488 } 2489 if (gottd) { 2490 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2491 if (NFSHASNFSV4N(nmp)) 2492 *tl++ = 0; 2493 else 2494 *tl++ = tdstateid.seqid; 2495 *tl++ = tdstateid.other[0]; 2496 *tl++ = tdstateid.other[1]; 2497 *tl = tdstateid.other[2]; 2498 } 2499 if (ret > 0) { 2500 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2501 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2502 np = VTONFS(fdvp); 2503 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2504 np->n_fhp->nfh_len, 0); 2505 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2506 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2507 } 2508 } else { 2509 ret = 0; 2510 } 2511 if (ret == 0) 2512 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2513 if (nd->nd_flag & ND_NFSV4) { 2514 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2515 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2516 NFSWCCATTR_ATTRBIT(&attrbits); 2517 (void) nfsrv_putattrbit(nd, &attrbits); 2518 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2519 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2520 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2521 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2522 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2523 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2524 (void) nfsrv_putattrbit(nd, &attrbits); 2525 nd->nd_flag |= ND_V4WCCATTR; 2526 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2527 *tl = txdr_unsigned(NFSV4OP_RENAME); 2528 } 2529 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2530 if (!(nd->nd_flag & ND_NFSV4)) 2531 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2532 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2533 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2534 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2535 if (error) 2536 return (error); 2537 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2538 /* For NFSv4, parse out any Delereturn replies. */ 2539 if (ret > 0 && nd->nd_repstat != 0 && 2540 (nd->nd_flag & ND_NOMOREDATA)) { 2541 /* 2542 * If the Delegreturn failed, try again without 2543 * it. The server will Recall, as required. 2544 */ 2545 mbuf_freem(nd->nd_mrep); 2546 goto tryagain; 2547 } 2548 for (i = 0; i < (ret * 2); i++) { 2549 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2550 ND_NFSV4) { 2551 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2552 if (*(tl + 1)) { 2553 if (i == 0 && ret > 1) { 2554 /* 2555 * If the Delegreturn failed, try again 2556 * without it. The server will Recall, as 2557 * required. 2558 * If ret > 1, the first iteration of this 2559 * loop is the second DelegReturn result. 2560 */ 2561 mbuf_freem(nd->nd_mrep); 2562 goto tryagain; 2563 } else { 2564 nd->nd_flag |= ND_NOMOREDATA; 2565 } 2566 } 2567 } 2568 } 2569 /* Now, the first wcc attribute reply. */ 2570 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2571 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2572 if (*(tl + 1)) 2573 nd->nd_flag |= ND_NOMOREDATA; 2574 } 2575 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2576 fstuff); 2577 /* and the second wcc attribute reply. */ 2578 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2579 !error) { 2580 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2581 if (*(tl + 1)) 2582 nd->nd_flag |= ND_NOMOREDATA; 2583 } 2584 if (!error) 2585 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2586 NULL, tstuff); 2587 } 2588 if (nd->nd_repstat && !error) 2589 error = nd->nd_repstat; 2590 nfsmout: 2591 mbuf_freem(nd->nd_mrep); 2592 return (error); 2593 } 2594 2595 /* 2596 * nfs hard link create rpc 2597 */ 2598 int 2599 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2600 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2601 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2602 { 2603 u_int32_t *tl; 2604 struct nfsrv_descript nfsd, *nd = &nfsd; 2605 nfsattrbit_t attrbits; 2606 int error = 0; 2607 2608 *attrflagp = 0; 2609 *dattrflagp = 0; 2610 if (namelen > NFS_MAXNAMLEN) 2611 return (ENAMETOOLONG); 2612 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2613 if (nd->nd_flag & ND_NFSV4) { 2614 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2615 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2616 } 2617 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2618 VTONFS(dvp)->n_fhp->nfh_len, 0); 2619 if (nd->nd_flag & ND_NFSV4) { 2620 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2621 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2622 NFSWCCATTR_ATTRBIT(&attrbits); 2623 (void) nfsrv_putattrbit(nd, &attrbits); 2624 nd->nd_flag |= ND_V4WCCATTR; 2625 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2626 *tl = txdr_unsigned(NFSV4OP_LINK); 2627 } 2628 (void) nfsm_strtom(nd, name, namelen); 2629 error = nfscl_request(nd, vp, p, cred, dstuff); 2630 if (error) 2631 return (error); 2632 if (nd->nd_flag & ND_NFSV3) { 2633 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2634 if (!error) 2635 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2636 NULL, dstuff); 2637 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2638 /* 2639 * First, parse out the PutFH and Getattr result. 2640 */ 2641 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2642 if (!(*(tl + 1))) 2643 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2644 if (*(tl + 1)) 2645 nd->nd_flag |= ND_NOMOREDATA; 2646 /* 2647 * Get the pre-op attributes. 2648 */ 2649 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2650 } 2651 if (nd->nd_repstat && !error) 2652 error = nd->nd_repstat; 2653 nfsmout: 2654 mbuf_freem(nd->nd_mrep); 2655 return (error); 2656 } 2657 2658 /* 2659 * nfs symbolic link create rpc 2660 */ 2661 int 2662 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2663 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2664 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2665 int *dattrflagp, void *dstuff) 2666 { 2667 u_int32_t *tl; 2668 struct nfsrv_descript nfsd, *nd = &nfsd; 2669 struct nfsmount *nmp; 2670 int slen, error = 0; 2671 2672 *nfhpp = NULL; 2673 *attrflagp = 0; 2674 *dattrflagp = 0; 2675 nmp = VFSTONFS(vnode_mount(dvp)); 2676 slen = strlen(target); 2677 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2678 return (ENAMETOOLONG); 2679 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2680 if (nd->nd_flag & ND_NFSV4) { 2681 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2682 *tl = txdr_unsigned(NFLNK); 2683 (void) nfsm_strtom(nd, target, slen); 2684 } 2685 (void) nfsm_strtom(nd, name, namelen); 2686 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2687 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2688 if (!(nd->nd_flag & ND_NFSV4)) 2689 (void) nfsm_strtom(nd, target, slen); 2690 if (nd->nd_flag & ND_NFSV2) 2691 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2692 error = nfscl_request(nd, dvp, p, cred, dstuff); 2693 if (error) 2694 return (error); 2695 if (nd->nd_flag & ND_NFSV4) 2696 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2697 if ((nd->nd_flag & ND_NFSV3) && !error) { 2698 if (!nd->nd_repstat) 2699 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2700 if (!error) 2701 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2702 NULL, dstuff); 2703 } 2704 if (nd->nd_repstat && !error) 2705 error = nd->nd_repstat; 2706 mbuf_freem(nd->nd_mrep); 2707 /* 2708 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2709 * Only do this if vfs.nfs.ignore_eexist is set. 2710 * Never do this for NFSv4.1 or later minor versions, since sessions 2711 * should guarantee "exactly once" RPC semantics. 2712 */ 2713 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2714 nmp->nm_minorvers == 0)) 2715 error = 0; 2716 return (error); 2717 } 2718 2719 /* 2720 * nfs make dir rpc 2721 */ 2722 int 2723 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2724 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2725 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2726 int *dattrflagp, void *dstuff) 2727 { 2728 u_int32_t *tl; 2729 struct nfsrv_descript nfsd, *nd = &nfsd; 2730 nfsattrbit_t attrbits; 2731 int error = 0; 2732 struct nfsfh *fhp; 2733 struct nfsmount *nmp; 2734 2735 *nfhpp = NULL; 2736 *attrflagp = 0; 2737 *dattrflagp = 0; 2738 nmp = VFSTONFS(vnode_mount(dvp)); 2739 fhp = VTONFS(dvp)->n_fhp; 2740 if (namelen > NFS_MAXNAMLEN) 2741 return (ENAMETOOLONG); 2742 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2743 if (nd->nd_flag & ND_NFSV4) { 2744 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2745 *tl = txdr_unsigned(NFDIR); 2746 } 2747 (void) nfsm_strtom(nd, name, namelen); 2748 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2749 if (nd->nd_flag & ND_NFSV4) { 2750 NFSGETATTR_ATTRBIT(&attrbits); 2751 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2752 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2753 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2754 (void) nfsrv_putattrbit(nd, &attrbits); 2755 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2756 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2757 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2758 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2759 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2760 (void) nfsrv_putattrbit(nd, &attrbits); 2761 } 2762 error = nfscl_request(nd, dvp, p, cred, dstuff); 2763 if (error) 2764 return (error); 2765 if (nd->nd_flag & ND_NFSV4) 2766 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2767 if (!nd->nd_repstat && !error) { 2768 if (nd->nd_flag & ND_NFSV4) { 2769 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2770 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2771 } 2772 if (!error) 2773 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2774 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2775 /* Get rid of the PutFH and Getattr status values. */ 2776 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2777 /* Load the directory attributes. */ 2778 error = nfsm_loadattr(nd, dnap); 2779 if (error == 0) 2780 *dattrflagp = 1; 2781 } 2782 } 2783 if ((nd->nd_flag & ND_NFSV3) && !error) 2784 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2785 if (nd->nd_repstat && !error) 2786 error = nd->nd_repstat; 2787 nfsmout: 2788 mbuf_freem(nd->nd_mrep); 2789 /* 2790 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2791 * Only do this if vfs.nfs.ignore_eexist is set. 2792 * Never do this for NFSv4.1 or later minor versions, since sessions 2793 * should guarantee "exactly once" RPC semantics. 2794 */ 2795 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2796 nmp->nm_minorvers == 0)) 2797 error = 0; 2798 return (error); 2799 } 2800 2801 /* 2802 * nfs remove directory call 2803 */ 2804 int 2805 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2806 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2807 { 2808 struct nfsrv_descript nfsd, *nd = &nfsd; 2809 int error = 0; 2810 2811 *dattrflagp = 0; 2812 if (namelen > NFS_MAXNAMLEN) 2813 return (ENAMETOOLONG); 2814 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2815 (void) nfsm_strtom(nd, name, namelen); 2816 error = nfscl_request(nd, dvp, p, cred, dstuff); 2817 if (error) 2818 return (error); 2819 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2820 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2821 if (nd->nd_repstat && !error) 2822 error = nd->nd_repstat; 2823 mbuf_freem(nd->nd_mrep); 2824 /* 2825 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2826 */ 2827 if (error == ENOENT) 2828 error = 0; 2829 return (error); 2830 } 2831 2832 /* 2833 * Readdir rpc. 2834 * Always returns with either uio_resid unchanged, if you are at the 2835 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2836 * filled in. 2837 * I felt this would allow caching of directory blocks more easily 2838 * than returning a pertially filled block. 2839 * Directory offset cookies: 2840 * Oh my, what to do with them... 2841 * I can think of three ways to deal with them: 2842 * 1 - have the layer above these RPCs maintain a map between logical 2843 * directory byte offsets and the NFS directory offset cookies 2844 * 2 - pass the opaque directory offset cookies up into userland 2845 * and let the libc functions deal with them, via the system call 2846 * 3 - return them to userland in the "struct dirent", so future versions 2847 * of libc can use them and do whatever is necessary to make things work 2848 * above these rpc calls, in the meantime 2849 * For now, I do #3 by "hiding" the directory offset cookies after the 2850 * d_name field in struct dirent. This is space inside d_reclen that 2851 * will be ignored by anything that doesn't know about them. 2852 * The directory offset cookies are filled in as the last 8 bytes of 2853 * each directory entry, after d_name. Someday, the userland libc 2854 * functions may be able to use these. In the meantime, it satisfies 2855 * OpenBSD's requirements for cookies being returned. 2856 * If expects the directory offset cookie for the read to be in uio_offset 2857 * and returns the one for the next entry after this directory block in 2858 * there, as well. 2859 */ 2860 int 2861 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2862 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2863 int *eofp, void *stuff) 2864 { 2865 int len, left; 2866 struct dirent *dp = NULL; 2867 u_int32_t *tl; 2868 nfsquad_t cookie, ncookie; 2869 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2870 struct nfsnode *dnp = VTONFS(vp); 2871 struct nfsvattr nfsva; 2872 struct nfsrv_descript nfsd, *nd = &nfsd; 2873 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2874 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2875 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2876 char *cp; 2877 nfsattrbit_t attrbits, dattrbits; 2878 u_int32_t rderr, *tl2 = NULL; 2879 size_t tresid; 2880 2881 KASSERT(uiop->uio_iovcnt == 1 && 2882 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2883 ("nfs readdirrpc bad uio")); 2884 ncookie.lval[0] = ncookie.lval[1] = 0; 2885 /* 2886 * There is no point in reading a lot more than uio_resid, however 2887 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2888 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2889 * will never make readsize > nm_readdirsize. 2890 */ 2891 readsize = nmp->nm_readdirsize; 2892 if (readsize > uio_uio_resid(uiop)) 2893 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2894 2895 *attrflagp = 0; 2896 if (eofp) 2897 *eofp = 0; 2898 tresid = uio_uio_resid(uiop); 2899 cookie.lval[0] = cookiep->nfsuquad[0]; 2900 cookie.lval[1] = cookiep->nfsuquad[1]; 2901 nd->nd_mrep = NULL; 2902 2903 /* 2904 * For NFSv4, first create the "." and ".." entries. 2905 */ 2906 if (NFSHASNFSV4(nmp)) { 2907 reqsize = 6 * NFSX_UNSIGNED; 2908 NFSGETATTR_ATTRBIT(&dattrbits); 2909 NFSZERO_ATTRBIT(&attrbits); 2910 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2911 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2912 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2913 NFSATTRBIT_MOUNTEDONFILEID)) { 2914 NFSSETBIT_ATTRBIT(&attrbits, 2915 NFSATTRBIT_MOUNTEDONFILEID); 2916 gotmnton = 1; 2917 } else { 2918 /* 2919 * Must fake it. Use the fileno, except when the 2920 * fsid is != to that of the directory. For that 2921 * case, generate a fake fileno that is not the same. 2922 */ 2923 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2924 gotmnton = 0; 2925 } 2926 2927 /* 2928 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2929 */ 2930 if (uiop->uio_offset == 0) { 2931 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2932 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2933 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2934 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2935 (void) nfsrv_putattrbit(nd, &attrbits); 2936 error = nfscl_request(nd, vp, p, cred, stuff); 2937 if (error) 2938 return (error); 2939 dotfileid = 0; /* Fake out the compiler. */ 2940 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2941 error = nfsm_loadattr(nd, &nfsva); 2942 if (error != 0) 2943 goto nfsmout; 2944 dotfileid = nfsva.na_fileid; 2945 } 2946 if (nd->nd_repstat == 0) { 2947 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2948 len = fxdr_unsigned(int, *(tl + 4)); 2949 if (len > 0 && len <= NFSX_V4FHMAX) 2950 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2951 else 2952 error = EPERM; 2953 if (!error) { 2954 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2955 nfsva.na_mntonfileno = UINT64_MAX; 2956 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2957 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2958 NULL, NULL, NULL, p, cred); 2959 if (error) { 2960 dotdotfileid = dotfileid; 2961 } else if (gotmnton) { 2962 if (nfsva.na_mntonfileno != UINT64_MAX) 2963 dotdotfileid = nfsva.na_mntonfileno; 2964 else 2965 dotdotfileid = nfsva.na_fileid; 2966 } else if (nfsva.na_filesid[0] == 2967 dnp->n_vattr.na_filesid[0] && 2968 nfsva.na_filesid[1] == 2969 dnp->n_vattr.na_filesid[1]) { 2970 dotdotfileid = nfsva.na_fileid; 2971 } else { 2972 do { 2973 fakefileno--; 2974 } while (fakefileno == 2975 nfsva.na_fileid); 2976 dotdotfileid = fakefileno; 2977 } 2978 } 2979 } else if (nd->nd_repstat == NFSERR_NOENT) { 2980 /* 2981 * Lookupp returns NFSERR_NOENT when we are 2982 * at the root, so just use the current dir. 2983 */ 2984 nd->nd_repstat = 0; 2985 dotdotfileid = dotfileid; 2986 } else { 2987 error = nd->nd_repstat; 2988 } 2989 mbuf_freem(nd->nd_mrep); 2990 if (error) 2991 return (error); 2992 nd->nd_mrep = NULL; 2993 dp = (struct dirent *)uio_iov_base(uiop); 2994 dp->d_pad0 = dp->d_pad1 = 0; 2995 dp->d_off = 0; 2996 dp->d_type = DT_DIR; 2997 dp->d_fileno = dotfileid; 2998 dp->d_namlen = 1; 2999 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3000 dp->d_name[0] = '.'; 3001 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3002 /* 3003 * Just make these offset cookie 0. 3004 */ 3005 tl = (u_int32_t *)&dp->d_name[8]; 3006 *tl++ = 0; 3007 *tl = 0; 3008 blksiz += dp->d_reclen; 3009 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3010 uiop->uio_offset += dp->d_reclen; 3011 uio_iov_base_add(uiop, dp->d_reclen); 3012 uio_iov_len_add(uiop, -(dp->d_reclen)); 3013 dp = (struct dirent *)uio_iov_base(uiop); 3014 dp->d_pad0 = dp->d_pad1 = 0; 3015 dp->d_off = 0; 3016 dp->d_type = DT_DIR; 3017 dp->d_fileno = dotdotfileid; 3018 dp->d_namlen = 2; 3019 *((uint64_t *)dp->d_name) = 0; 3020 dp->d_name[0] = '.'; 3021 dp->d_name[1] = '.'; 3022 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3023 /* 3024 * Just make these offset cookie 0. 3025 */ 3026 tl = (u_int32_t *)&dp->d_name[8]; 3027 *tl++ = 0; 3028 *tl = 0; 3029 blksiz += dp->d_reclen; 3030 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3031 uiop->uio_offset += dp->d_reclen; 3032 uio_iov_base_add(uiop, dp->d_reclen); 3033 uio_iov_len_add(uiop, -(dp->d_reclen)); 3034 } 3035 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 3036 } else { 3037 reqsize = 5 * NFSX_UNSIGNED; 3038 } 3039 3040 3041 /* 3042 * Loop around doing readdir rpc's of size readsize. 3043 * The stopping criteria is EOF or buffer full. 3044 */ 3045 while (more_dirs && bigenough) { 3046 *attrflagp = 0; 3047 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 3048 if (nd->nd_flag & ND_NFSV2) { 3049 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3050 *tl++ = cookie.lval[1]; 3051 *tl = txdr_unsigned(readsize); 3052 } else { 3053 NFSM_BUILD(tl, u_int32_t *, reqsize); 3054 *tl++ = cookie.lval[0]; 3055 *tl++ = cookie.lval[1]; 3056 if (cookie.qval == 0) { 3057 *tl++ = 0; 3058 *tl++ = 0; 3059 } else { 3060 NFSLOCKNODE(dnp); 3061 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3062 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3063 NFSUNLOCKNODE(dnp); 3064 } 3065 if (nd->nd_flag & ND_NFSV4) { 3066 *tl++ = txdr_unsigned(readsize); 3067 *tl = txdr_unsigned(readsize); 3068 (void) nfsrv_putattrbit(nd, &attrbits); 3069 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3070 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3071 (void) nfsrv_putattrbit(nd, &dattrbits); 3072 } else { 3073 *tl = txdr_unsigned(readsize); 3074 } 3075 } 3076 error = nfscl_request(nd, vp, p, cred, stuff); 3077 if (error) 3078 return (error); 3079 if (!(nd->nd_flag & ND_NFSV2)) { 3080 if (nd->nd_flag & ND_NFSV3) 3081 error = nfscl_postop_attr(nd, nap, attrflagp, 3082 stuff); 3083 if (!nd->nd_repstat && !error) { 3084 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3085 NFSLOCKNODE(dnp); 3086 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3087 dnp->n_cookieverf.nfsuquad[1] = *tl; 3088 NFSUNLOCKNODE(dnp); 3089 } 3090 } 3091 if (nd->nd_repstat || error) { 3092 if (!error) 3093 error = nd->nd_repstat; 3094 goto nfsmout; 3095 } 3096 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3097 more_dirs = fxdr_unsigned(int, *tl); 3098 if (!more_dirs) 3099 tryformoredirs = 0; 3100 3101 /* loop through the dir entries, doctoring them to 4bsd form */ 3102 while (more_dirs && bigenough) { 3103 if (nd->nd_flag & ND_NFSV4) { 3104 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3105 ncookie.lval[0] = *tl++; 3106 ncookie.lval[1] = *tl++; 3107 len = fxdr_unsigned(int, *tl); 3108 } else if (nd->nd_flag & ND_NFSV3) { 3109 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3110 nfsva.na_fileid = fxdr_hyper(tl); 3111 tl += 2; 3112 len = fxdr_unsigned(int, *tl); 3113 } else { 3114 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3115 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3116 *tl++); 3117 len = fxdr_unsigned(int, *tl); 3118 } 3119 if (len <= 0 || len > NFS_MAXNAMLEN) { 3120 error = EBADRPC; 3121 goto nfsmout; 3122 } 3123 tlen = roundup2(len, 8); 3124 if (tlen == len) 3125 tlen += 8; /* To ensure null termination. */ 3126 left = DIRBLKSIZ - blksiz; 3127 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3128 NFSBZERO(uio_iov_base(uiop), left); 3129 dp->d_reclen += left; 3130 uio_iov_base_add(uiop, left); 3131 uio_iov_len_add(uiop, -(left)); 3132 uio_uio_resid_add(uiop, -(left)); 3133 uiop->uio_offset += left; 3134 blksiz = 0; 3135 } 3136 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3137 uio_uio_resid(uiop)) 3138 bigenough = 0; 3139 if (bigenough) { 3140 dp = (struct dirent *)uio_iov_base(uiop); 3141 dp->d_pad0 = dp->d_pad1 = 0; 3142 dp->d_off = 0; 3143 dp->d_namlen = len; 3144 dp->d_reclen = _GENERIC_DIRLEN(len) + 3145 NFSX_HYPER; 3146 dp->d_type = DT_UNKNOWN; 3147 blksiz += dp->d_reclen; 3148 if (blksiz == DIRBLKSIZ) 3149 blksiz = 0; 3150 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3151 uiop->uio_offset += DIRHDSIZ; 3152 uio_iov_base_add(uiop, DIRHDSIZ); 3153 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3154 error = nfsm_mbufuio(nd, uiop, len); 3155 if (error) 3156 goto nfsmout; 3157 cp = uio_iov_base(uiop); 3158 tlen -= len; 3159 NFSBZERO(cp, tlen); 3160 cp += tlen; /* points to cookie storage */ 3161 tl2 = (u_int32_t *)cp; 3162 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3163 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3164 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3165 uiop->uio_offset += (tlen + NFSX_HYPER); 3166 } else { 3167 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3168 if (error) 3169 goto nfsmout; 3170 } 3171 if (nd->nd_flag & ND_NFSV4) { 3172 rderr = 0; 3173 nfsva.na_mntonfileno = UINT64_MAX; 3174 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3175 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3176 NULL, NULL, &rderr, p, cred); 3177 if (error) 3178 goto nfsmout; 3179 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3180 } else if (nd->nd_flag & ND_NFSV3) { 3181 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3182 ncookie.lval[0] = *tl++; 3183 ncookie.lval[1] = *tl++; 3184 } else { 3185 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3186 ncookie.lval[0] = 0; 3187 ncookie.lval[1] = *tl++; 3188 } 3189 if (bigenough) { 3190 if (nd->nd_flag & ND_NFSV4) { 3191 if (rderr) { 3192 dp->d_fileno = 0; 3193 } else { 3194 if (gotmnton) { 3195 if (nfsva.na_mntonfileno != UINT64_MAX) 3196 dp->d_fileno = nfsva.na_mntonfileno; 3197 else 3198 dp->d_fileno = nfsva.na_fileid; 3199 } else if (nfsva.na_filesid[0] == 3200 dnp->n_vattr.na_filesid[0] && 3201 nfsva.na_filesid[1] == 3202 dnp->n_vattr.na_filesid[1]) { 3203 dp->d_fileno = nfsva.na_fileid; 3204 } else { 3205 do { 3206 fakefileno--; 3207 } while (fakefileno == 3208 nfsva.na_fileid); 3209 dp->d_fileno = fakefileno; 3210 } 3211 dp->d_type = vtonfs_dtype(nfsva.na_type); 3212 } 3213 } else { 3214 dp->d_fileno = nfsva.na_fileid; 3215 } 3216 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3217 ncookie.lval[0]; 3218 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3219 ncookie.lval[1]; 3220 } 3221 more_dirs = fxdr_unsigned(int, *tl); 3222 } 3223 /* 3224 * If at end of rpc data, get the eof boolean 3225 */ 3226 if (!more_dirs) { 3227 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3228 eof = fxdr_unsigned(int, *tl); 3229 if (tryformoredirs) 3230 more_dirs = !eof; 3231 if (nd->nd_flag & ND_NFSV4) { 3232 error = nfscl_postop_attr(nd, nap, attrflagp, 3233 stuff); 3234 if (error) 3235 goto nfsmout; 3236 } 3237 } 3238 mbuf_freem(nd->nd_mrep); 3239 nd->nd_mrep = NULL; 3240 } 3241 /* 3242 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3243 * by increasing d_reclen for the last record. 3244 */ 3245 if (blksiz > 0) { 3246 left = DIRBLKSIZ - blksiz; 3247 NFSBZERO(uio_iov_base(uiop), left); 3248 dp->d_reclen += left; 3249 uio_iov_base_add(uiop, left); 3250 uio_iov_len_add(uiop, -(left)); 3251 uio_uio_resid_add(uiop, -(left)); 3252 uiop->uio_offset += left; 3253 } 3254 3255 /* 3256 * If returning no data, assume end of file. 3257 * If not bigenough, return not end of file, since you aren't 3258 * returning all the data 3259 * Otherwise, return the eof flag from the server. 3260 */ 3261 if (eofp) { 3262 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3263 *eofp = 1; 3264 else if (!bigenough) 3265 *eofp = 0; 3266 else 3267 *eofp = eof; 3268 } 3269 3270 /* 3271 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3272 */ 3273 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3274 dp = (struct dirent *)uio_iov_base(uiop); 3275 NFSBZERO(dp, DIRBLKSIZ); 3276 dp->d_type = DT_UNKNOWN; 3277 tl = (u_int32_t *)&dp->d_name[4]; 3278 *tl++ = cookie.lval[0]; 3279 *tl = cookie.lval[1]; 3280 dp->d_reclen = DIRBLKSIZ; 3281 uio_iov_base_add(uiop, DIRBLKSIZ); 3282 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3283 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3284 uiop->uio_offset += DIRBLKSIZ; 3285 } 3286 3287 nfsmout: 3288 if (nd->nd_mrep != NULL) 3289 mbuf_freem(nd->nd_mrep); 3290 return (error); 3291 } 3292 3293 #ifndef APPLE 3294 /* 3295 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3296 * (Also used for NFS V4 when mount flag set.) 3297 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3298 */ 3299 int 3300 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3301 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3302 int *eofp, void *stuff) 3303 { 3304 int len, left; 3305 struct dirent *dp = NULL; 3306 u_int32_t *tl; 3307 vnode_t newvp = NULLVP; 3308 struct nfsrv_descript nfsd, *nd = &nfsd; 3309 struct nameidata nami, *ndp = &nami; 3310 struct componentname *cnp = &ndp->ni_cnd; 3311 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3312 struct nfsnode *dnp = VTONFS(vp), *np; 3313 struct nfsvattr nfsva; 3314 struct nfsfh *nfhp; 3315 nfsquad_t cookie, ncookie; 3316 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3317 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3318 int isdotdot = 0, unlocknewvp = 0; 3319 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3320 u_int64_t fileno = 0; 3321 char *cp; 3322 nfsattrbit_t attrbits, dattrbits; 3323 size_t tresid; 3324 u_int32_t *tl2 = NULL, rderr; 3325 struct timespec dctime, ts; 3326 bool attr_ok; 3327 3328 KASSERT(uiop->uio_iovcnt == 1 && 3329 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3330 ("nfs readdirplusrpc bad uio")); 3331 ncookie.lval[0] = ncookie.lval[1] = 0; 3332 timespecclear(&dctime); 3333 *attrflagp = 0; 3334 if (eofp != NULL) 3335 *eofp = 0; 3336 ndp->ni_dvp = vp; 3337 nd->nd_mrep = NULL; 3338 cookie.lval[0] = cookiep->nfsuquad[0]; 3339 cookie.lval[1] = cookiep->nfsuquad[1]; 3340 tresid = uio_uio_resid(uiop); 3341 3342 /* 3343 * For NFSv4, first create the "." and ".." entries. 3344 */ 3345 if (NFSHASNFSV4(nmp)) { 3346 NFSGETATTR_ATTRBIT(&dattrbits); 3347 NFSZERO_ATTRBIT(&attrbits); 3348 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3349 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3350 NFSATTRBIT_MOUNTEDONFILEID)) { 3351 NFSSETBIT_ATTRBIT(&attrbits, 3352 NFSATTRBIT_MOUNTEDONFILEID); 3353 gotmnton = 1; 3354 } else { 3355 /* 3356 * Must fake it. Use the fileno, except when the 3357 * fsid is != to that of the directory. For that 3358 * case, generate a fake fileno that is not the same. 3359 */ 3360 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3361 gotmnton = 0; 3362 } 3363 3364 /* 3365 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3366 */ 3367 if (uiop->uio_offset == 0) { 3368 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3369 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3370 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3371 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3372 (void) nfsrv_putattrbit(nd, &attrbits); 3373 error = nfscl_request(nd, vp, p, cred, stuff); 3374 if (error) 3375 return (error); 3376 dotfileid = 0; /* Fake out the compiler. */ 3377 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3378 error = nfsm_loadattr(nd, &nfsva); 3379 if (error != 0) 3380 goto nfsmout; 3381 dctime = nfsva.na_ctime; 3382 dotfileid = nfsva.na_fileid; 3383 } 3384 if (nd->nd_repstat == 0) { 3385 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3386 len = fxdr_unsigned(int, *(tl + 4)); 3387 if (len > 0 && len <= NFSX_V4FHMAX) 3388 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3389 else 3390 error = EPERM; 3391 if (!error) { 3392 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3393 nfsva.na_mntonfileno = UINT64_MAX; 3394 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3395 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3396 NULL, NULL, NULL, p, cred); 3397 if (error) { 3398 dotdotfileid = dotfileid; 3399 } else if (gotmnton) { 3400 if (nfsva.na_mntonfileno != UINT64_MAX) 3401 dotdotfileid = nfsva.na_mntonfileno; 3402 else 3403 dotdotfileid = nfsva.na_fileid; 3404 } else if (nfsva.na_filesid[0] == 3405 dnp->n_vattr.na_filesid[0] && 3406 nfsva.na_filesid[1] == 3407 dnp->n_vattr.na_filesid[1]) { 3408 dotdotfileid = nfsva.na_fileid; 3409 } else { 3410 do { 3411 fakefileno--; 3412 } while (fakefileno == 3413 nfsva.na_fileid); 3414 dotdotfileid = fakefileno; 3415 } 3416 } 3417 } else if (nd->nd_repstat == NFSERR_NOENT) { 3418 /* 3419 * Lookupp returns NFSERR_NOENT when we are 3420 * at the root, so just use the current dir. 3421 */ 3422 nd->nd_repstat = 0; 3423 dotdotfileid = dotfileid; 3424 } else { 3425 error = nd->nd_repstat; 3426 } 3427 mbuf_freem(nd->nd_mrep); 3428 if (error) 3429 return (error); 3430 nd->nd_mrep = NULL; 3431 dp = (struct dirent *)uio_iov_base(uiop); 3432 dp->d_pad0 = dp->d_pad1 = 0; 3433 dp->d_off = 0; 3434 dp->d_type = DT_DIR; 3435 dp->d_fileno = dotfileid; 3436 dp->d_namlen = 1; 3437 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3438 dp->d_name[0] = '.'; 3439 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3440 /* 3441 * Just make these offset cookie 0. 3442 */ 3443 tl = (u_int32_t *)&dp->d_name[8]; 3444 *tl++ = 0; 3445 *tl = 0; 3446 blksiz += dp->d_reclen; 3447 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3448 uiop->uio_offset += dp->d_reclen; 3449 uio_iov_base_add(uiop, dp->d_reclen); 3450 uio_iov_len_add(uiop, -(dp->d_reclen)); 3451 dp = (struct dirent *)uio_iov_base(uiop); 3452 dp->d_pad0 = dp->d_pad1 = 0; 3453 dp->d_off = 0; 3454 dp->d_type = DT_DIR; 3455 dp->d_fileno = dotdotfileid; 3456 dp->d_namlen = 2; 3457 *((uint64_t *)dp->d_name) = 0; 3458 dp->d_name[0] = '.'; 3459 dp->d_name[1] = '.'; 3460 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3461 /* 3462 * Just make these offset cookie 0. 3463 */ 3464 tl = (u_int32_t *)&dp->d_name[8]; 3465 *tl++ = 0; 3466 *tl = 0; 3467 blksiz += dp->d_reclen; 3468 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3469 uiop->uio_offset += dp->d_reclen; 3470 uio_iov_base_add(uiop, dp->d_reclen); 3471 uio_iov_len_add(uiop, -(dp->d_reclen)); 3472 } 3473 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3474 if (gotmnton) 3475 NFSSETBIT_ATTRBIT(&attrbits, 3476 NFSATTRBIT_MOUNTEDONFILEID); 3477 } 3478 3479 /* 3480 * Loop around doing readdir rpc's of size nm_readdirsize. 3481 * The stopping criteria is EOF or buffer full. 3482 */ 3483 while (more_dirs && bigenough) { 3484 *attrflagp = 0; 3485 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3486 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3487 *tl++ = cookie.lval[0]; 3488 *tl++ = cookie.lval[1]; 3489 if (cookie.qval == 0) { 3490 *tl++ = 0; 3491 *tl++ = 0; 3492 } else { 3493 NFSLOCKNODE(dnp); 3494 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3495 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3496 NFSUNLOCKNODE(dnp); 3497 } 3498 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3499 *tl = txdr_unsigned(nmp->nm_readdirsize); 3500 if (nd->nd_flag & ND_NFSV4) { 3501 (void) nfsrv_putattrbit(nd, &attrbits); 3502 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3503 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3504 (void) nfsrv_putattrbit(nd, &dattrbits); 3505 } 3506 nanouptime(&ts); 3507 error = nfscl_request(nd, vp, p, cred, stuff); 3508 if (error) 3509 return (error); 3510 if (nd->nd_flag & ND_NFSV3) 3511 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3512 if (nd->nd_repstat || error) { 3513 if (!error) 3514 error = nd->nd_repstat; 3515 goto nfsmout; 3516 } 3517 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3518 dctime = nap->na_ctime; 3519 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3520 NFSLOCKNODE(dnp); 3521 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3522 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3523 NFSUNLOCKNODE(dnp); 3524 more_dirs = fxdr_unsigned(int, *tl); 3525 if (!more_dirs) 3526 tryformoredirs = 0; 3527 3528 /* loop through the dir entries, doctoring them to 4bsd form */ 3529 while (more_dirs && bigenough) { 3530 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3531 if (nd->nd_flag & ND_NFSV4) { 3532 ncookie.lval[0] = *tl++; 3533 ncookie.lval[1] = *tl++; 3534 } else { 3535 fileno = fxdr_hyper(tl); 3536 tl += 2; 3537 } 3538 len = fxdr_unsigned(int, *tl); 3539 if (len <= 0 || len > NFS_MAXNAMLEN) { 3540 error = EBADRPC; 3541 goto nfsmout; 3542 } 3543 tlen = roundup2(len, 8); 3544 if (tlen == len) 3545 tlen += 8; /* To ensure null termination. */ 3546 left = DIRBLKSIZ - blksiz; 3547 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3548 NFSBZERO(uio_iov_base(uiop), left); 3549 dp->d_reclen += left; 3550 uio_iov_base_add(uiop, left); 3551 uio_iov_len_add(uiop, -(left)); 3552 uio_uio_resid_add(uiop, -(left)); 3553 uiop->uio_offset += left; 3554 blksiz = 0; 3555 } 3556 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3557 uio_uio_resid(uiop)) 3558 bigenough = 0; 3559 if (bigenough) { 3560 dp = (struct dirent *)uio_iov_base(uiop); 3561 dp->d_pad0 = dp->d_pad1 = 0; 3562 dp->d_off = 0; 3563 dp->d_namlen = len; 3564 dp->d_reclen = _GENERIC_DIRLEN(len) + 3565 NFSX_HYPER; 3566 dp->d_type = DT_UNKNOWN; 3567 blksiz += dp->d_reclen; 3568 if (blksiz == DIRBLKSIZ) 3569 blksiz = 0; 3570 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3571 uiop->uio_offset += DIRHDSIZ; 3572 uio_iov_base_add(uiop, DIRHDSIZ); 3573 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3574 cnp->cn_nameptr = uio_iov_base(uiop); 3575 cnp->cn_namelen = len; 3576 NFSCNHASHZERO(cnp); 3577 error = nfsm_mbufuio(nd, uiop, len); 3578 if (error) 3579 goto nfsmout; 3580 cp = uio_iov_base(uiop); 3581 tlen -= len; 3582 NFSBZERO(cp, tlen); 3583 cp += tlen; /* points to cookie storage */ 3584 tl2 = (u_int32_t *)cp; 3585 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3586 cnp->cn_nameptr[1] == '.') 3587 isdotdot = 1; 3588 else 3589 isdotdot = 0; 3590 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3591 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3592 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3593 uiop->uio_offset += (tlen + NFSX_HYPER); 3594 } else { 3595 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3596 if (error) 3597 goto nfsmout; 3598 } 3599 nfhp = NULL; 3600 if (nd->nd_flag & ND_NFSV3) { 3601 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3602 ncookie.lval[0] = *tl++; 3603 ncookie.lval[1] = *tl++; 3604 attrflag = fxdr_unsigned(int, *tl); 3605 if (attrflag) { 3606 error = nfsm_loadattr(nd, &nfsva); 3607 if (error) 3608 goto nfsmout; 3609 } 3610 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3611 if (*tl) { 3612 error = nfsm_getfh(nd, &nfhp); 3613 if (error) 3614 goto nfsmout; 3615 } 3616 if (!attrflag && nfhp != NULL) { 3617 free(nfhp, M_NFSFH); 3618 nfhp = NULL; 3619 } 3620 } else { 3621 rderr = 0; 3622 nfsva.na_mntonfileno = 0xffffffff; 3623 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3624 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3625 NULL, NULL, &rderr, p, cred); 3626 if (error) 3627 goto nfsmout; 3628 } 3629 3630 if (bigenough) { 3631 if (nd->nd_flag & ND_NFSV4) { 3632 if (rderr) { 3633 dp->d_fileno = 0; 3634 } else if (gotmnton) { 3635 if (nfsva.na_mntonfileno != 0xffffffff) 3636 dp->d_fileno = nfsva.na_mntonfileno; 3637 else 3638 dp->d_fileno = nfsva.na_fileid; 3639 } else if (nfsva.na_filesid[0] == 3640 dnp->n_vattr.na_filesid[0] && 3641 nfsva.na_filesid[1] == 3642 dnp->n_vattr.na_filesid[1]) { 3643 dp->d_fileno = nfsva.na_fileid; 3644 } else { 3645 do { 3646 fakefileno--; 3647 } while (fakefileno == 3648 nfsva.na_fileid); 3649 dp->d_fileno = fakefileno; 3650 } 3651 } else { 3652 dp->d_fileno = fileno; 3653 } 3654 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3655 ncookie.lval[0]; 3656 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3657 ncookie.lval[1]; 3658 3659 if (nfhp != NULL) { 3660 attr_ok = true; 3661 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3662 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3663 VREF(vp); 3664 newvp = vp; 3665 unlocknewvp = 0; 3666 free(nfhp, M_NFSFH); 3667 np = dnp; 3668 } else if (isdotdot != 0) { 3669 /* 3670 * Skip doing a nfscl_nget() call for "..". 3671 * There's a race between acquiring the nfs 3672 * node here and lookups that look for the 3673 * directory being read (in the parent). 3674 * It would try to get a lock on ".." here, 3675 * owning the lock on the directory being 3676 * read. Lookup will hold the lock on ".." 3677 * and try to acquire the lock on the 3678 * directory being read. 3679 * If the directory is unlocked/relocked, 3680 * then there is a LOR with the buflock 3681 * vp is relocked. 3682 */ 3683 free(nfhp, M_NFSFH); 3684 } else { 3685 error = nfscl_nget(vnode_mount(vp), vp, 3686 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3687 if (!error) { 3688 newvp = NFSTOV(np); 3689 unlocknewvp = 1; 3690 /* 3691 * If n_localmodtime >= time before RPC, 3692 * then a file modification operation, 3693 * such as VOP_SETATTR() of size, has 3694 * occurred while the Lookup RPC and 3695 * acquisition of the vnode happened. As 3696 * such, the attributes might be stale, 3697 * with possibly an incorrect size. 3698 */ 3699 NFSLOCKNODE(np); 3700 if (timespecisset( 3701 &np->n_localmodtime) && 3702 timespeccmp(&np->n_localmodtime, 3703 &ts, >=)) { 3704 NFSCL_DEBUG(4, "nfsrpc_readdirplus:" 3705 " localmod stale attributes\n"); 3706 attr_ok = false; 3707 } 3708 NFSUNLOCKNODE(np); 3709 } 3710 } 3711 nfhp = NULL; 3712 if (newvp != NULLVP) { 3713 if (attr_ok) 3714 error = nfscl_loadattrcache(&newvp, 3715 &nfsva, NULL, NULL, 0, 0); 3716 if (error) { 3717 if (unlocknewvp) 3718 vput(newvp); 3719 else 3720 vrele(newvp); 3721 goto nfsmout; 3722 } 3723 dp->d_type = 3724 vtonfs_dtype(np->n_vattr.na_type); 3725 ndp->ni_vp = newvp; 3726 NFSCNHASH(cnp, HASHINIT); 3727 if (cnp->cn_namelen <= NCHNAMLEN && 3728 ndp->ni_dvp != ndp->ni_vp && 3729 (newvp->v_type != VDIR || 3730 dctime.tv_sec != 0)) { 3731 cache_enter_time(ndp->ni_dvp, 3732 ndp->ni_vp, cnp, 3733 &nfsva.na_ctime, 3734 newvp->v_type != VDIR ? NULL : 3735 &dctime); 3736 } 3737 if (unlocknewvp) 3738 vput(newvp); 3739 else 3740 vrele(newvp); 3741 newvp = NULLVP; 3742 } 3743 } 3744 } else if (nfhp != NULL) { 3745 free(nfhp, M_NFSFH); 3746 } 3747 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3748 more_dirs = fxdr_unsigned(int, *tl); 3749 } 3750 /* 3751 * If at end of rpc data, get the eof boolean 3752 */ 3753 if (!more_dirs) { 3754 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3755 eof = fxdr_unsigned(int, *tl); 3756 if (tryformoredirs) 3757 more_dirs = !eof; 3758 if (nd->nd_flag & ND_NFSV4) { 3759 error = nfscl_postop_attr(nd, nap, attrflagp, 3760 stuff); 3761 if (error) 3762 goto nfsmout; 3763 } 3764 } 3765 mbuf_freem(nd->nd_mrep); 3766 nd->nd_mrep = NULL; 3767 } 3768 /* 3769 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3770 * by increasing d_reclen for the last record. 3771 */ 3772 if (blksiz > 0) { 3773 left = DIRBLKSIZ - blksiz; 3774 NFSBZERO(uio_iov_base(uiop), left); 3775 dp->d_reclen += left; 3776 uio_iov_base_add(uiop, left); 3777 uio_iov_len_add(uiop, -(left)); 3778 uio_uio_resid_add(uiop, -(left)); 3779 uiop->uio_offset += left; 3780 } 3781 3782 /* 3783 * If returning no data, assume end of file. 3784 * If not bigenough, return not end of file, since you aren't 3785 * returning all the data 3786 * Otherwise, return the eof flag from the server. 3787 */ 3788 if (eofp != NULL) { 3789 if (tresid == uio_uio_resid(uiop)) 3790 *eofp = 1; 3791 else if (!bigenough) 3792 *eofp = 0; 3793 else 3794 *eofp = eof; 3795 } 3796 3797 /* 3798 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3799 */ 3800 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3801 dp = (struct dirent *)uio_iov_base(uiop); 3802 NFSBZERO(dp, DIRBLKSIZ); 3803 dp->d_type = DT_UNKNOWN; 3804 tl = (u_int32_t *)&dp->d_name[4]; 3805 *tl++ = cookie.lval[0]; 3806 *tl = cookie.lval[1]; 3807 dp->d_reclen = DIRBLKSIZ; 3808 uio_iov_base_add(uiop, DIRBLKSIZ); 3809 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3810 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3811 uiop->uio_offset += DIRBLKSIZ; 3812 } 3813 3814 nfsmout: 3815 if (nd->nd_mrep != NULL) 3816 mbuf_freem(nd->nd_mrep); 3817 return (error); 3818 } 3819 #endif /* !APPLE */ 3820 3821 /* 3822 * Nfs commit rpc 3823 */ 3824 int 3825 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3826 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3827 { 3828 u_int32_t *tl; 3829 struct nfsrv_descript nfsd, *nd = &nfsd; 3830 nfsattrbit_t attrbits; 3831 int error; 3832 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3833 3834 *attrflagp = 0; 3835 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3836 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3837 txdr_hyper(offset, tl); 3838 tl += 2; 3839 *tl = txdr_unsigned(cnt); 3840 if (nd->nd_flag & ND_NFSV4) { 3841 /* 3842 * And do a Getattr op. 3843 */ 3844 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3845 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3846 NFSGETATTR_ATTRBIT(&attrbits); 3847 (void) nfsrv_putattrbit(nd, &attrbits); 3848 } 3849 error = nfscl_request(nd, vp, p, cred, stuff); 3850 if (error) 3851 return (error); 3852 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3853 if (!error && !nd->nd_repstat) { 3854 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3855 NFSLOCKMNT(nmp); 3856 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3857 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3858 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3859 } 3860 NFSUNLOCKMNT(nmp); 3861 if (nd->nd_flag & ND_NFSV4) 3862 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3863 } 3864 nfsmout: 3865 if (!error && nd->nd_repstat) 3866 error = nd->nd_repstat; 3867 mbuf_freem(nd->nd_mrep); 3868 return (error); 3869 } 3870 3871 /* 3872 * NFS byte range lock rpc. 3873 * (Mostly just calls one of the three lower level RPC routines.) 3874 */ 3875 int 3876 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3877 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3878 { 3879 struct nfscllockowner *lp; 3880 struct nfsclclient *clp; 3881 struct nfsfh *nfhp; 3882 struct nfsrv_descript nfsd, *nd = &nfsd; 3883 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3884 u_int64_t off, len; 3885 off_t start, end; 3886 u_int32_t clidrev = 0; 3887 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3888 int callcnt, dorpc; 3889 3890 /* 3891 * Convert the flock structure into a start and end and do POSIX 3892 * bounds checking. 3893 */ 3894 switch (fl->l_whence) { 3895 case SEEK_SET: 3896 case SEEK_CUR: 3897 /* 3898 * Caller is responsible for adding any necessary offset 3899 * when SEEK_CUR is used. 3900 */ 3901 start = fl->l_start; 3902 off = fl->l_start; 3903 break; 3904 case SEEK_END: 3905 start = size + fl->l_start; 3906 off = size + fl->l_start; 3907 break; 3908 default: 3909 return (EINVAL); 3910 } 3911 if (start < 0) 3912 return (EINVAL); 3913 if (fl->l_len != 0) { 3914 end = start + fl->l_len - 1; 3915 if (end < start) 3916 return (EINVAL); 3917 } 3918 3919 len = fl->l_len; 3920 if (len == 0) 3921 len = NFS64BITSSET; 3922 retrycnt = 0; 3923 do { 3924 nd->nd_repstat = 0; 3925 if (op == F_GETLK) { 3926 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, true, &clp); 3927 if (error) 3928 return (error); 3929 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3930 if (!error) { 3931 clidrev = clp->nfsc_clientidrev; 3932 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3933 p, id, flags); 3934 } else if (error == -1) { 3935 error = 0; 3936 } 3937 nfscl_clientrelease(clp); 3938 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3939 /* 3940 * We must loop around for all lockowner cases. 3941 */ 3942 callcnt = 0; 3943 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, true, &clp); 3944 if (error) 3945 return (error); 3946 do { 3947 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3948 clp, id, flags, &lp, &dorpc); 3949 /* 3950 * If it returns a NULL lp, we're done. 3951 */ 3952 if (lp == NULL) { 3953 if (callcnt == 0) 3954 nfscl_clientrelease(clp); 3955 else 3956 nfscl_releasealllocks(clp, vp, p, id, flags); 3957 return (error); 3958 } 3959 if (nmp->nm_clp != NULL) 3960 clidrev = nmp->nm_clp->nfsc_clientidrev; 3961 else 3962 clidrev = 0; 3963 /* 3964 * If the server doesn't support Posix lock semantics, 3965 * only allow locks on the entire file, since it won't 3966 * handle overlapping byte ranges. 3967 * There might still be a problem when a lock 3968 * upgrade/downgrade (read<->write) occurs, since the 3969 * server "might" expect an unlock first? 3970 */ 3971 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3972 (off == 0 && len == NFS64BITSSET))) { 3973 /* 3974 * Since the lock records will go away, we must 3975 * wait for grace and delay here. 3976 */ 3977 do { 3978 error = nfsrpc_locku(nd, nmp, lp, off, len, 3979 NFSV4LOCKT_READ, cred, p, 0); 3980 if ((nd->nd_repstat == NFSERR_GRACE || 3981 nd->nd_repstat == NFSERR_DELAY) && 3982 error == 0) 3983 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3984 "nfs_advlock"); 3985 } while ((nd->nd_repstat == NFSERR_GRACE || 3986 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3987 } 3988 callcnt++; 3989 } while (error == 0 && nd->nd_repstat == 0); 3990 nfscl_releasealllocks(clp, vp, p, id, flags); 3991 } else if (op == F_SETLK) { 3992 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3993 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3994 if (error || donelocally) { 3995 return (error); 3996 } 3997 if (nmp->nm_clp != NULL) 3998 clidrev = nmp->nm_clp->nfsc_clientidrev; 3999 else 4000 clidrev = 0; 4001 nfhp = VTONFS(vp)->n_fhp; 4002 if (!lp->nfsl_open->nfso_posixlock && 4003 (off != 0 || len != NFS64BITSSET)) { 4004 error = EINVAL; 4005 } else { 4006 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 4007 nfhp->nfh_len, lp, newone, reclaim, off, 4008 len, fl->l_type, cred, p, 0); 4009 } 4010 if (!error) 4011 error = nd->nd_repstat; 4012 nfscl_lockrelease(lp, error, newone); 4013 } else { 4014 error = EINVAL; 4015 } 4016 if (!error) 4017 error = nd->nd_repstat; 4018 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 4019 error == NFSERR_STALEDONTRECOVER || 4020 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4021 error == NFSERR_BADSESSION) { 4022 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 4023 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 4024 && clidrev != 0) { 4025 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 4026 retrycnt++; 4027 } 4028 } while (error == NFSERR_GRACE || 4029 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4030 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 4031 error == NFSERR_BADSESSION || 4032 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 4033 expireret == 0 && clidrev != 0 && retrycnt < 4)); 4034 if (error && retrycnt >= 4) 4035 error = EIO; 4036 return (error); 4037 } 4038 4039 /* 4040 * The lower level routine for the LockT case. 4041 */ 4042 int 4043 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 4044 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 4045 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4046 { 4047 u_int32_t *tl; 4048 int error, type, size; 4049 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4050 struct nfsnode *np; 4051 struct nfsmount *nmp; 4052 struct nfsclsession *tsep; 4053 4054 nmp = VFSTONFS(vp->v_mount); 4055 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 4056 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4057 if (fl->l_type == F_RDLCK) 4058 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4059 else 4060 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4061 txdr_hyper(off, tl); 4062 tl += 2; 4063 txdr_hyper(len, tl); 4064 tl += 2; 4065 tsep = nfsmnt_mdssession(nmp); 4066 *tl++ = tsep->nfsess_clientid.lval[0]; 4067 *tl = tsep->nfsess_clientid.lval[1]; 4068 nfscl_filllockowner(id, own, flags); 4069 np = VTONFS(vp); 4070 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4071 np->n_fhp->nfh_len); 4072 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4073 error = nfscl_request(nd, vp, p, cred, NULL); 4074 if (error) 4075 return (error); 4076 if (nd->nd_repstat == 0) { 4077 fl->l_type = F_UNLCK; 4078 } else if (nd->nd_repstat == NFSERR_DENIED) { 4079 nd->nd_repstat = 0; 4080 fl->l_whence = SEEK_SET; 4081 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4082 fl->l_start = fxdr_hyper(tl); 4083 tl += 2; 4084 len = fxdr_hyper(tl); 4085 tl += 2; 4086 if (len == NFS64BITSSET) 4087 fl->l_len = 0; 4088 else 4089 fl->l_len = len; 4090 type = fxdr_unsigned(int, *tl++); 4091 if (type == NFSV4LOCKT_WRITE) 4092 fl->l_type = F_WRLCK; 4093 else 4094 fl->l_type = F_RDLCK; 4095 /* 4096 * XXX For now, I have no idea what to do with the 4097 * conflicting lock_owner, so I'll just set the pid == 0 4098 * and skip over the lock_owner. 4099 */ 4100 fl->l_pid = (pid_t)0; 4101 tl += 2; 4102 size = fxdr_unsigned(int, *tl); 4103 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4104 error = EBADRPC; 4105 if (!error) 4106 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4107 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4108 nfscl_initiate_recovery(clp); 4109 nfsmout: 4110 mbuf_freem(nd->nd_mrep); 4111 return (error); 4112 } 4113 4114 /* 4115 * Lower level function that performs the LockU RPC. 4116 */ 4117 static int 4118 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4119 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4120 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4121 { 4122 u_int32_t *tl; 4123 int error; 4124 4125 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4126 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0); 4127 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4128 *tl++ = txdr_unsigned(type); 4129 *tl = txdr_unsigned(lp->nfsl_seqid); 4130 if (nfstest_outofseq && 4131 (arc4random() % nfstest_outofseq) == 0) 4132 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4133 tl++; 4134 if (NFSHASNFSV4N(nmp)) 4135 *tl++ = 0; 4136 else 4137 *tl++ = lp->nfsl_stateid.seqid; 4138 *tl++ = lp->nfsl_stateid.other[0]; 4139 *tl++ = lp->nfsl_stateid.other[1]; 4140 *tl++ = lp->nfsl_stateid.other[2]; 4141 txdr_hyper(off, tl); 4142 tl += 2; 4143 txdr_hyper(len, tl); 4144 if (syscred) 4145 nd->nd_flag |= ND_USEGSSNAME; 4146 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4147 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4148 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4149 if (error) 4150 return (error); 4151 if (nd->nd_repstat == 0) { 4152 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4153 lp->nfsl_stateid.seqid = *tl++; 4154 lp->nfsl_stateid.other[0] = *tl++; 4155 lp->nfsl_stateid.other[1] = *tl++; 4156 lp->nfsl_stateid.other[2] = *tl; 4157 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4158 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4159 nfsmout: 4160 mbuf_freem(nd->nd_mrep); 4161 return (error); 4162 } 4163 4164 /* 4165 * The actual Lock RPC. 4166 */ 4167 int 4168 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4169 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4170 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4171 NFSPROC_T *p, int syscred) 4172 { 4173 u_int32_t *tl; 4174 int error, size; 4175 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4176 struct nfsclsession *tsep; 4177 4178 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 4179 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4180 if (type == F_RDLCK) 4181 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4182 else 4183 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4184 *tl++ = txdr_unsigned(reclaim); 4185 txdr_hyper(off, tl); 4186 tl += 2; 4187 txdr_hyper(len, tl); 4188 tl += 2; 4189 if (newone) { 4190 *tl = newnfs_true; 4191 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4192 2 * NFSX_UNSIGNED + NFSX_HYPER); 4193 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4194 if (NFSHASNFSV4N(nmp)) 4195 *tl++ = 0; 4196 else 4197 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4198 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4199 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4200 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4201 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4202 tsep = nfsmnt_mdssession(nmp); 4203 *tl++ = tsep->nfsess_clientid.lval[0]; 4204 *tl = tsep->nfsess_clientid.lval[1]; 4205 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4206 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4207 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4208 } else { 4209 *tl = newnfs_false; 4210 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4211 if (NFSHASNFSV4N(nmp)) 4212 *tl++ = 0; 4213 else 4214 *tl++ = lp->nfsl_stateid.seqid; 4215 *tl++ = lp->nfsl_stateid.other[0]; 4216 *tl++ = lp->nfsl_stateid.other[1]; 4217 *tl++ = lp->nfsl_stateid.other[2]; 4218 *tl = txdr_unsigned(lp->nfsl_seqid); 4219 if (nfstest_outofseq && 4220 (arc4random() % nfstest_outofseq) == 0) 4221 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4222 } 4223 if (syscred) 4224 nd->nd_flag |= ND_USEGSSNAME; 4225 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4226 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4227 if (error) 4228 return (error); 4229 if (newone) 4230 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4231 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4232 if (nd->nd_repstat == 0) { 4233 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4234 lp->nfsl_stateid.seqid = *tl++; 4235 lp->nfsl_stateid.other[0] = *tl++; 4236 lp->nfsl_stateid.other[1] = *tl++; 4237 lp->nfsl_stateid.other[2] = *tl; 4238 } else if (nd->nd_repstat == NFSERR_DENIED) { 4239 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4240 size = fxdr_unsigned(int, *(tl + 7)); 4241 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4242 error = EBADRPC; 4243 if (!error) 4244 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4245 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4246 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4247 nfsmout: 4248 mbuf_freem(nd->nd_mrep); 4249 return (error); 4250 } 4251 4252 /* 4253 * nfs statfs rpc 4254 * (always called with the vp for the mount point) 4255 */ 4256 int 4257 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4258 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4259 void *stuff) 4260 { 4261 u_int32_t *tl = NULL; 4262 struct nfsrv_descript nfsd, *nd = &nfsd; 4263 struct nfsmount *nmp; 4264 nfsattrbit_t attrbits; 4265 int error; 4266 4267 *attrflagp = 0; 4268 nmp = VFSTONFS(vnode_mount(vp)); 4269 if (NFSHASNFSV4(nmp)) { 4270 /* 4271 * For V4, you actually do a getattr. 4272 */ 4273 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4274 NFSSTATFS_GETATTRBIT(&attrbits); 4275 (void) nfsrv_putattrbit(nd, &attrbits); 4276 nd->nd_flag |= ND_USEGSSNAME; 4277 error = nfscl_request(nd, vp, p, cred, stuff); 4278 if (error) 4279 return (error); 4280 if (nd->nd_repstat == 0) { 4281 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4282 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4283 cred); 4284 if (!error) { 4285 nmp->nm_fsid[0] = nap->na_filesid[0]; 4286 nmp->nm_fsid[1] = nap->na_filesid[1]; 4287 NFSSETHASSETFSID(nmp); 4288 *attrflagp = 1; 4289 } 4290 } else { 4291 error = nd->nd_repstat; 4292 } 4293 if (error) 4294 goto nfsmout; 4295 } else { 4296 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4297 error = nfscl_request(nd, vp, p, cred, stuff); 4298 if (error) 4299 return (error); 4300 if (nd->nd_flag & ND_NFSV3) { 4301 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4302 if (error) 4303 goto nfsmout; 4304 } 4305 if (nd->nd_repstat) { 4306 error = nd->nd_repstat; 4307 goto nfsmout; 4308 } 4309 NFSM_DISSECT(tl, u_int32_t *, 4310 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4311 } 4312 if (NFSHASNFSV3(nmp)) { 4313 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4314 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4315 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4316 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4317 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4318 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4319 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4320 } else if (NFSHASNFSV4(nmp) == 0) { 4321 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4322 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4323 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4324 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4325 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4326 } 4327 nfsmout: 4328 mbuf_freem(nd->nd_mrep); 4329 return (error); 4330 } 4331 4332 /* 4333 * nfs pathconf rpc 4334 */ 4335 int 4336 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4337 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4338 void *stuff) 4339 { 4340 struct nfsrv_descript nfsd, *nd = &nfsd; 4341 struct nfsmount *nmp; 4342 u_int32_t *tl; 4343 nfsattrbit_t attrbits; 4344 int error; 4345 4346 *attrflagp = 0; 4347 nmp = VFSTONFS(vnode_mount(vp)); 4348 if (NFSHASNFSV4(nmp)) { 4349 /* 4350 * For V4, you actually do a getattr. 4351 */ 4352 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4353 NFSPATHCONF_GETATTRBIT(&attrbits); 4354 (void) nfsrv_putattrbit(nd, &attrbits); 4355 nd->nd_flag |= ND_USEGSSNAME; 4356 error = nfscl_request(nd, vp, p, cred, stuff); 4357 if (error) 4358 return (error); 4359 if (nd->nd_repstat == 0) { 4360 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4361 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4362 cred); 4363 if (!error) 4364 *attrflagp = 1; 4365 } else { 4366 error = nd->nd_repstat; 4367 } 4368 } else { 4369 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4370 error = nfscl_request(nd, vp, p, cred, stuff); 4371 if (error) 4372 return (error); 4373 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4374 if (nd->nd_repstat && !error) 4375 error = nd->nd_repstat; 4376 if (!error) { 4377 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4378 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4379 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4380 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4381 pc->pc_chownrestricted = 4382 fxdr_unsigned(u_int32_t, *tl++); 4383 pc->pc_caseinsensitive = 4384 fxdr_unsigned(u_int32_t, *tl++); 4385 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4386 } 4387 } 4388 nfsmout: 4389 mbuf_freem(nd->nd_mrep); 4390 return (error); 4391 } 4392 4393 /* 4394 * nfs version 3 fsinfo rpc call 4395 */ 4396 int 4397 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4398 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4399 { 4400 u_int32_t *tl; 4401 struct nfsrv_descript nfsd, *nd = &nfsd; 4402 int error; 4403 4404 *attrflagp = 0; 4405 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4406 error = nfscl_request(nd, vp, p, cred, stuff); 4407 if (error) 4408 return (error); 4409 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4410 if (nd->nd_repstat && !error) 4411 error = nd->nd_repstat; 4412 if (!error) { 4413 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4414 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4415 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4416 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4417 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4418 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4419 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4420 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4421 fsp->fs_maxfilesize = fxdr_hyper(tl); 4422 tl += 2; 4423 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4424 tl += 2; 4425 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4426 } 4427 nfsmout: 4428 mbuf_freem(nd->nd_mrep); 4429 return (error); 4430 } 4431 4432 /* 4433 * This function performs the Renew RPC. 4434 */ 4435 int 4436 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4437 NFSPROC_T *p) 4438 { 4439 u_int32_t *tl; 4440 struct nfsrv_descript nfsd; 4441 struct nfsrv_descript *nd = &nfsd; 4442 struct nfsmount *nmp; 4443 int error; 4444 struct nfssockreq *nrp; 4445 struct nfsclsession *tsep; 4446 4447 nmp = clp->nfsc_nmp; 4448 if (nmp == NULL) 4449 return (0); 4450 if (dsp == NULL) 4451 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4452 0); 4453 else 4454 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4455 &dsp->nfsclds_sess, 0, 0); 4456 if (!NFSHASNFSV4N(nmp)) { 4457 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4458 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4459 tsep = nfsmnt_mdssession(nmp); 4460 *tl++ = tsep->nfsess_clientid.lval[0]; 4461 *tl = tsep->nfsess_clientid.lval[1]; 4462 } 4463 nrp = NULL; 4464 if (dsp != NULL) 4465 nrp = dsp->nfsclds_sockp; 4466 if (nrp == NULL) 4467 /* If NULL, use the MDS socket. */ 4468 nrp = &nmp->nm_sockreq; 4469 nd->nd_flag |= ND_USEGSSNAME; 4470 if (dsp == NULL) 4471 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4472 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4473 else { 4474 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4475 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4476 if (error == ENXIO) 4477 nfscl_cancelreqs(dsp); 4478 } 4479 if (error) 4480 return (error); 4481 error = nd->nd_repstat; 4482 mbuf_freem(nd->nd_mrep); 4483 return (error); 4484 } 4485 4486 /* 4487 * This function performs the Releaselockowner RPC. 4488 */ 4489 int 4490 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4491 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4492 { 4493 struct nfsrv_descript nfsd, *nd = &nfsd; 4494 u_int32_t *tl; 4495 int error; 4496 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4497 struct nfsclsession *tsep; 4498 4499 if (NFSHASNFSV4N(nmp)) { 4500 /* For NFSv4.1, do a FreeStateID. */ 4501 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4502 NULL, 0, 0); 4503 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4504 } else { 4505 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4506 NULL, 0, 0); 4507 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4508 tsep = nfsmnt_mdssession(nmp); 4509 *tl++ = tsep->nfsess_clientid.lval[0]; 4510 *tl = tsep->nfsess_clientid.lval[1]; 4511 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4512 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4513 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4514 } 4515 nd->nd_flag |= ND_USEGSSNAME; 4516 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4517 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4518 if (error) 4519 return (error); 4520 error = nd->nd_repstat; 4521 mbuf_freem(nd->nd_mrep); 4522 return (error); 4523 } 4524 4525 /* 4526 * This function performs the Compound to get the mount pt FH. 4527 */ 4528 int 4529 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4530 NFSPROC_T *p) 4531 { 4532 u_int32_t *tl; 4533 struct nfsrv_descript nfsd; 4534 struct nfsrv_descript *nd = &nfsd; 4535 u_char *cp, *cp2; 4536 int error, cnt, len, setnil; 4537 u_int32_t *opcntp; 4538 4539 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4540 0); 4541 cp = dirpath; 4542 cnt = 0; 4543 do { 4544 setnil = 0; 4545 while (*cp == '/') 4546 cp++; 4547 cp2 = cp; 4548 while (*cp2 != '\0' && *cp2 != '/') 4549 cp2++; 4550 if (*cp2 == '/') { 4551 setnil = 1; 4552 *cp2 = '\0'; 4553 } 4554 if (cp2 != cp) { 4555 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4556 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4557 nfsm_strtom(nd, cp, strlen(cp)); 4558 cnt++; 4559 } 4560 if (setnil) 4561 *cp2++ = '/'; 4562 cp = cp2; 4563 } while (*cp != '\0'); 4564 if (NFSHASNFSV4N(nmp)) 4565 /* Has a Sequence Op done by nfscl_reqstart(). */ 4566 *opcntp = txdr_unsigned(3 + cnt); 4567 else 4568 *opcntp = txdr_unsigned(2 + cnt); 4569 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4570 *tl = txdr_unsigned(NFSV4OP_GETFH); 4571 nd->nd_flag |= ND_USEGSSNAME; 4572 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4573 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4574 if (error) 4575 return (error); 4576 if (nd->nd_repstat == 0) { 4577 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4578 tl += (2 + 2 * cnt); 4579 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4580 len > NFSX_FHMAX) { 4581 nd->nd_repstat = NFSERR_BADXDR; 4582 } else { 4583 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4584 if (nd->nd_repstat == 0) 4585 nmp->nm_fhsize = len; 4586 } 4587 } 4588 error = nd->nd_repstat; 4589 nfsmout: 4590 mbuf_freem(nd->nd_mrep); 4591 return (error); 4592 } 4593 4594 /* 4595 * This function performs the Delegreturn RPC. 4596 */ 4597 int 4598 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4599 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4600 { 4601 u_int32_t *tl; 4602 struct nfsrv_descript nfsd; 4603 struct nfsrv_descript *nd = &nfsd; 4604 int error; 4605 4606 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4607 dp->nfsdl_fhlen, NULL, NULL, 0, 0); 4608 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4609 if (NFSHASNFSV4N(nmp)) 4610 *tl++ = 0; 4611 else 4612 *tl++ = dp->nfsdl_stateid.seqid; 4613 *tl++ = dp->nfsdl_stateid.other[0]; 4614 *tl++ = dp->nfsdl_stateid.other[1]; 4615 *tl = dp->nfsdl_stateid.other[2]; 4616 if (syscred) 4617 nd->nd_flag |= ND_USEGSSNAME; 4618 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4619 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4620 if (error) 4621 return (error); 4622 error = nd->nd_repstat; 4623 mbuf_freem(nd->nd_mrep); 4624 return (error); 4625 } 4626 4627 /* 4628 * nfs getacl call. 4629 */ 4630 int 4631 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4632 struct acl *aclp, void *stuff) 4633 { 4634 struct nfsrv_descript nfsd, *nd = &nfsd; 4635 int error; 4636 nfsattrbit_t attrbits; 4637 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4638 4639 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4640 return (EOPNOTSUPP); 4641 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4642 NFSZERO_ATTRBIT(&attrbits); 4643 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4644 (void) nfsrv_putattrbit(nd, &attrbits); 4645 error = nfscl_request(nd, vp, p, cred, stuff); 4646 if (error) 4647 return (error); 4648 if (!nd->nd_repstat) 4649 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4650 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4651 else 4652 error = nd->nd_repstat; 4653 mbuf_freem(nd->nd_mrep); 4654 return (error); 4655 } 4656 4657 /* 4658 * nfs setacl call. 4659 */ 4660 int 4661 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4662 struct acl *aclp, void *stuff) 4663 { 4664 int error; 4665 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4666 4667 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4668 return (EOPNOTSUPP); 4669 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4670 return (error); 4671 } 4672 4673 /* 4674 * nfs setacl call. 4675 */ 4676 static int 4677 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4678 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4679 { 4680 struct nfsrv_descript nfsd, *nd = &nfsd; 4681 int error; 4682 nfsattrbit_t attrbits; 4683 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4684 4685 if (!NFSHASNFSV4(nmp)) 4686 return (EOPNOTSUPP); 4687 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4688 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4689 NFSZERO_ATTRBIT(&attrbits); 4690 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4691 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4692 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL); 4693 error = nfscl_request(nd, vp, p, cred, stuff); 4694 if (error) 4695 return (error); 4696 /* Don't care about the pre/postop attributes */ 4697 mbuf_freem(nd->nd_mrep); 4698 return (nd->nd_repstat); 4699 } 4700 4701 /* 4702 * Do the NFSv4.1 Exchange ID. 4703 */ 4704 int 4705 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4706 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4707 struct ucred *cred, NFSPROC_T *p) 4708 { 4709 uint32_t *tl, v41flags; 4710 struct nfsrv_descript nfsd; 4711 struct nfsrv_descript *nd = &nfsd; 4712 struct nfsclds *dsp; 4713 struct timespec verstime; 4714 int error, len; 4715 4716 *dspp = NULL; 4717 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 0, 0); 4718 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4719 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4720 *tl = txdr_unsigned(clp->nfsc_rev); 4721 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4722 4723 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4724 *tl++ = txdr_unsigned(exchflags); 4725 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4726 4727 /* Set the implementation id4 */ 4728 *tl = txdr_unsigned(1); 4729 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4730 (void) nfsm_strtom(nd, version, strlen(version)); 4731 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4732 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4733 verstime.tv_nsec = 0; 4734 txdr_nfsv4time(&verstime, tl); 4735 nd->nd_flag |= ND_USEGSSNAME; 4736 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4737 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4738 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4739 (int)nd->nd_repstat); 4740 if (error != 0) 4741 return (error); 4742 if (nd->nd_repstat == 0) { 4743 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4744 len = fxdr_unsigned(int, *(tl + 7)); 4745 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4746 error = NFSERR_BADXDR; 4747 goto nfsmout; 4748 } 4749 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4750 M_WAITOK | M_ZERO); 4751 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4752 dsp->nfsclds_servownlen = len; 4753 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4754 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4755 dsp->nfsclds_sess.nfsess_sequenceid = 4756 fxdr_unsigned(uint32_t, *tl++); 4757 v41flags = fxdr_unsigned(uint32_t, *tl); 4758 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4759 NFSHASPNFSOPT(nmp)) { 4760 NFSCL_DEBUG(1, "set PNFS\n"); 4761 NFSLOCKMNT(nmp); 4762 nmp->nm_state |= NFSSTA_PNFS; 4763 NFSUNLOCKMNT(nmp); 4764 dsp->nfsclds_flags |= NFSCLDS_MDS; 4765 } 4766 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4767 dsp->nfsclds_flags |= NFSCLDS_DS; 4768 if (len > 0) 4769 nd->nd_repstat = nfsrv_mtostr(nd, 4770 dsp->nfsclds_serverown, len); 4771 if (nd->nd_repstat == 0) { 4772 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4773 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4774 NULL, MTX_DEF); 4775 nfscl_initsessionslots(&dsp->nfsclds_sess); 4776 *dspp = dsp; 4777 } else 4778 free(dsp, M_NFSCLDS); 4779 } 4780 error = nd->nd_repstat; 4781 nfsmout: 4782 mbuf_freem(nd->nd_mrep); 4783 return (error); 4784 } 4785 4786 /* 4787 * Do the NFSv4.1 Create Session. 4788 */ 4789 int 4790 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4791 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4792 NFSPROC_T *p) 4793 { 4794 uint32_t crflags, maxval, *tl; 4795 struct nfsrv_descript nfsd; 4796 struct nfsrv_descript *nd = &nfsd; 4797 int error, irdcnt; 4798 4799 /* Make sure nm_rsize, nm_wsize is set. */ 4800 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4801 nmp->nm_rsize = NFS_MAXBSIZE; 4802 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4803 nmp->nm_wsize = NFS_MAXBSIZE; 4804 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 0, 4805 0); 4806 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4807 *tl++ = sep->nfsess_clientid.lval[0]; 4808 *tl++ = sep->nfsess_clientid.lval[1]; 4809 *tl++ = txdr_unsigned(sequenceid); 4810 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4811 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4812 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4813 *tl = txdr_unsigned(crflags); 4814 4815 /* Fill in fore channel attributes. */ 4816 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4817 *tl++ = 0; /* Header pad size */ 4818 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);/* Max request size */ 4819 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);/* Max reply size */ 4820 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4821 *tl++ = txdr_unsigned(20); /* Max operations */ 4822 *tl++ = txdr_unsigned(64); /* Max slots */ 4823 *tl = 0; /* No rdma ird */ 4824 4825 /* Fill in back channel attributes. */ 4826 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4827 *tl++ = 0; /* Header pad size */ 4828 *tl++ = txdr_unsigned(10000); /* Max request size */ 4829 *tl++ = txdr_unsigned(10000); /* Max response size */ 4830 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4831 *tl++ = txdr_unsigned(4); /* Max operations */ 4832 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4833 *tl = 0; /* No rdma ird */ 4834 4835 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4836 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4837 4838 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4839 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4840 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4841 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4842 *tl++ = 0; /* Null machine name */ 4843 *tl++ = 0; /* Uid == 0 */ 4844 *tl++ = 0; /* Gid == 0 */ 4845 *tl = 0; /* No additional gids */ 4846 nd->nd_flag |= ND_USEGSSNAME; 4847 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4848 NFS_VER4, NULL, 1, NULL, NULL); 4849 if (error != 0) 4850 return (error); 4851 if (nd->nd_repstat == 0) { 4852 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4853 2 * NFSX_UNSIGNED); 4854 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4855 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4856 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4857 crflags = fxdr_unsigned(uint32_t, *tl); 4858 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4859 NFSLOCKMNT(nmp); 4860 nmp->nm_state |= NFSSTA_SESSPERSIST; 4861 NFSUNLOCKMNT(nmp); 4862 } 4863 4864 /* Get the fore channel slot count. */ 4865 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4866 tl++; /* Skip the header pad size. */ 4867 4868 /* Make sure nm_wsize is small enough. */ 4869 maxval = fxdr_unsigned(uint32_t, *tl++); 4870 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4871 if (nmp->nm_wsize > 8096) 4872 nmp->nm_wsize /= 2; 4873 else 4874 break; 4875 } 4876 4877 /* Make sure nm_rsize is small enough. */ 4878 maxval = fxdr_unsigned(uint32_t, *tl++); 4879 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4880 if (nmp->nm_rsize > 8096) 4881 nmp->nm_rsize /= 2; 4882 else 4883 break; 4884 } 4885 4886 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4887 tl++; 4888 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4889 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4890 irdcnt = fxdr_unsigned(int, *tl); 4891 if (irdcnt < 0 || irdcnt > 1) { 4892 error = NFSERR_BADXDR; 4893 goto nfsmout; 4894 } 4895 if (irdcnt > 0) 4896 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4897 4898 /* and the back channel slot count. */ 4899 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4900 tl += 5; 4901 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4902 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4903 } 4904 error = nd->nd_repstat; 4905 nfsmout: 4906 mbuf_freem(nd->nd_mrep); 4907 return (error); 4908 } 4909 4910 /* 4911 * Do the NFSv4.1 Destroy Session. 4912 */ 4913 int 4914 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4915 struct ucred *cred, NFSPROC_T *p) 4916 { 4917 uint32_t *tl; 4918 struct nfsrv_descript nfsd; 4919 struct nfsrv_descript *nd = &nfsd; 4920 int error; 4921 struct nfsclsession *tsep; 4922 4923 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0, 4924 0); 4925 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4926 tsep = nfsmnt_mdssession(nmp); 4927 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4928 nd->nd_flag |= ND_USEGSSNAME; 4929 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4930 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4931 if (error != 0) 4932 return (error); 4933 error = nd->nd_repstat; 4934 mbuf_freem(nd->nd_mrep); 4935 return (error); 4936 } 4937 4938 /* 4939 * Do the NFSv4.1 Destroy Client. 4940 */ 4941 int 4942 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4943 struct ucred *cred, NFSPROC_T *p) 4944 { 4945 uint32_t *tl; 4946 struct nfsrv_descript nfsd; 4947 struct nfsrv_descript *nd = &nfsd; 4948 int error; 4949 struct nfsclsession *tsep; 4950 4951 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 4952 0); 4953 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4954 tsep = nfsmnt_mdssession(nmp); 4955 *tl++ = tsep->nfsess_clientid.lval[0]; 4956 *tl = tsep->nfsess_clientid.lval[1]; 4957 nd->nd_flag |= ND_USEGSSNAME; 4958 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4959 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4960 if (error != 0) 4961 return (error); 4962 error = nd->nd_repstat; 4963 mbuf_freem(nd->nd_mrep); 4964 return (error); 4965 } 4966 4967 /* 4968 * Do the NFSv4.1 LayoutGet. 4969 */ 4970 static int 4971 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4972 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 4973 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 4974 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 4975 void *stuff) 4976 { 4977 struct nfsrv_descript nfsd, *nd = &nfsd; 4978 int error; 4979 4980 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 4981 0); 4982 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 4983 layouttype, layoutlen, 0); 4984 nd->nd_flag |= ND_USEGSSNAME; 4985 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4986 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4987 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 4988 if (error != 0) 4989 return (error); 4990 if (nd->nd_repstat == 0) 4991 error = nfsrv_parselayoutget(nd, stateidp, retonclosep, flhp); 4992 if (error == 0 && nd->nd_repstat != 0) 4993 error = nd->nd_repstat; 4994 mbuf_freem(nd->nd_mrep); 4995 return (error); 4996 } 4997 4998 /* 4999 * Do the NFSv4.1 Get Device Info. 5000 */ 5001 int 5002 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 5003 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 5004 NFSPROC_T *p) 5005 { 5006 uint32_t cnt, *tl, vers, minorvers; 5007 struct nfsrv_descript nfsd; 5008 struct nfsrv_descript *nd = &nfsd; 5009 struct sockaddr_in sin, ssin; 5010 struct sockaddr_in6 sin6, ssin6; 5011 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 5012 struct nfscldevinfo *ndi; 5013 int addrcnt = 0, bitcnt, error, gotvers, i, isudp, j, stripecnt; 5014 uint8_t stripeindex; 5015 sa_family_t af, safilled; 5016 5017 *ndip = NULL; 5018 ndi = NULL; 5019 gotdspp = NULL; 5020 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 5021 0); 5022 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5023 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 5024 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5025 *tl++ = txdr_unsigned(layouttype); 5026 *tl++ = txdr_unsigned(100000); 5027 if (notifybitsp != NULL && *notifybitsp != 0) { 5028 *tl = txdr_unsigned(1); /* One word of bits. */ 5029 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5030 *tl = txdr_unsigned(*notifybitsp); 5031 } else 5032 *tl = txdr_unsigned(0); 5033 nd->nd_flag |= ND_USEGSSNAME; 5034 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5035 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5036 if (error != 0) 5037 return (error); 5038 if (nd->nd_repstat == 0) { 5039 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5040 if (layouttype != fxdr_unsigned(int, *tl)) 5041 printf("EEK! devinfo layout type not same!\n"); 5042 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 5043 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5044 stripecnt = fxdr_unsigned(int, *tl); 5045 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 5046 if (stripecnt < 1 || stripecnt > 4096) { 5047 printf("pNFS File layout devinfo stripecnt %d:" 5048 " out of range\n", stripecnt); 5049 error = NFSERR_BADXDR; 5050 goto nfsmout; 5051 } 5052 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 5053 NFSX_UNSIGNED); 5054 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 5055 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 5056 if (addrcnt < 1 || addrcnt > 128) { 5057 printf("NFS devinfo addrcnt %d: out of range\n", 5058 addrcnt); 5059 error = NFSERR_BADXDR; 5060 goto nfsmout; 5061 } 5062 5063 /* 5064 * Now we know how many stripe indices and addresses, so 5065 * we can allocate the structure the correct size. 5066 */ 5067 i = (stripecnt * sizeof(uint8_t)) / 5068 sizeof(struct nfsclds *) + 1; 5069 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5070 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5071 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 5072 M_ZERO); 5073 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5074 NFSX_V4DEVICEID); 5075 ndi->nfsdi_refcnt = 0; 5076 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5077 ndi->nfsdi_stripecnt = stripecnt; 5078 ndi->nfsdi_addrcnt = addrcnt; 5079 /* Fill in the stripe indices. */ 5080 for (i = 0; i < stripecnt; i++) { 5081 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5082 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5083 if (stripeindex >= addrcnt) { 5084 printf("pNFS File Layout devinfo" 5085 " stripeindex %d: too big\n", 5086 (int)stripeindex); 5087 error = NFSERR_BADXDR; 5088 goto nfsmout; 5089 } 5090 nfsfldi_setstripeindex(ndi, i, stripeindex); 5091 } 5092 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5093 /* For Flex File, we only get one address list. */ 5094 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5095 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5096 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5097 NFSX_V4DEVICEID); 5098 ndi->nfsdi_refcnt = 0; 5099 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5100 addrcnt = ndi->nfsdi_addrcnt = 1; 5101 } 5102 5103 /* Now, dissect the server address(es). */ 5104 safilled = AF_UNSPEC; 5105 for (i = 0; i < addrcnt; i++) { 5106 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5107 cnt = fxdr_unsigned(uint32_t, *tl); 5108 if (cnt == 0) { 5109 printf("NFS devinfo 0 len addrlist\n"); 5110 error = NFSERR_BADXDR; 5111 goto nfsmout; 5112 } 5113 dspp = nfsfldi_addr(ndi, i); 5114 safilled = AF_UNSPEC; 5115 for (j = 0; j < cnt; j++) { 5116 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5117 &isudp); 5118 if (error != 0 && error != EPERM) { 5119 error = NFSERR_BADXDR; 5120 goto nfsmout; 5121 } 5122 if (error == 0 && isudp == 0) { 5123 /* 5124 * The priority is: 5125 * - Same address family. 5126 * Save the address and dspp, so that 5127 * the connection can be done after 5128 * parsing is complete. 5129 */ 5130 if (safilled == AF_UNSPEC || 5131 (af == nmp->nm_nam->sa_family && 5132 safilled != nmp->nm_nam->sa_family) 5133 ) { 5134 if (af == AF_INET) 5135 ssin = sin; 5136 else 5137 ssin6 = sin6; 5138 safilled = af; 5139 gotdspp = dspp; 5140 } 5141 } 5142 } 5143 } 5144 5145 gotvers = NFS_VER4; /* Always NFSv4 for File Layout. */ 5146 /* For Flex File, we will take one of the versions to use. */ 5147 if (layouttype == NFSLAYOUT_FLEXFILE) { 5148 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5149 j = fxdr_unsigned(int, *tl); 5150 if (j < 1 || j > NFSDEV_MAXVERS) { 5151 printf("pNFS: too many versions\n"); 5152 error = NFSERR_BADXDR; 5153 goto nfsmout; 5154 } 5155 gotvers = 0; 5156 for (i = 0; i < j; i++) { 5157 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5158 vers = fxdr_unsigned(uint32_t, *tl++); 5159 minorvers = fxdr_unsigned(uint32_t, *tl++); 5160 if ((vers == NFS_VER4 && minorvers == 5161 NFSV41_MINORVERSION) || (vers == NFS_VER3 && 5162 gotvers == 0)) { 5163 gotvers = vers; 5164 /* We'll take this one. */ 5165 ndi->nfsdi_versindex = i; 5166 ndi->nfsdi_vers = vers; 5167 ndi->nfsdi_minorvers = minorvers; 5168 ndi->nfsdi_rsize = fxdr_unsigned( 5169 uint32_t, *tl++); 5170 ndi->nfsdi_wsize = fxdr_unsigned( 5171 uint32_t, *tl++); 5172 if (*tl == newnfs_true) 5173 ndi->nfsdi_flags |= 5174 NFSDI_TIGHTCOUPLED; 5175 else 5176 ndi->nfsdi_flags &= 5177 ~NFSDI_TIGHTCOUPLED; 5178 } 5179 } 5180 if (gotvers == 0) { 5181 printf("pNFS: no NFSv3 or NFSv4.1\n"); 5182 error = NFSERR_BADXDR; 5183 goto nfsmout; 5184 } 5185 } 5186 5187 /* And the notify bits. */ 5188 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5189 bitcnt = fxdr_unsigned(int, *tl); 5190 if (bitcnt > 0) { 5191 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5192 if (notifybitsp != NULL) 5193 *notifybitsp = 5194 fxdr_unsigned(uint32_t, *tl); 5195 } 5196 if (safilled != AF_UNSPEC) { 5197 KASSERT(ndi != NULL, ("ndi is NULL")); 5198 *ndip = ndi; 5199 } else 5200 error = EPERM; 5201 if (error == 0) { 5202 /* 5203 * Now we can do a TCP connection for the correct 5204 * NFS version and IP address. 5205 */ 5206 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5207 gotvers, &dsp, p); 5208 } 5209 if (error == 0) { 5210 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5211 *gotdspp = dsp; 5212 } 5213 } 5214 if (nd->nd_repstat != 0 && error == 0) 5215 error = nd->nd_repstat; 5216 nfsmout: 5217 if (error != 0 && ndi != NULL) 5218 nfscl_freedevinfo(ndi); 5219 mbuf_freem(nd->nd_mrep); 5220 return (error); 5221 } 5222 5223 /* 5224 * Do the NFSv4.1 LayoutCommit. 5225 */ 5226 int 5227 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5228 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5229 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5230 { 5231 uint32_t *tl; 5232 struct nfsrv_descript nfsd, *nd = &nfsd; 5233 int error; 5234 5235 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5236 0, 0); 5237 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5238 NFSX_STATEID); 5239 txdr_hyper(off, tl); 5240 tl += 2; 5241 txdr_hyper(len, tl); 5242 tl += 2; 5243 if (reclaim != 0) 5244 *tl++ = newnfs_true; 5245 else 5246 *tl++ = newnfs_false; 5247 *tl++ = txdr_unsigned(stateidp->seqid); 5248 *tl++ = stateidp->other[0]; 5249 *tl++ = stateidp->other[1]; 5250 *tl++ = stateidp->other[2]; 5251 *tl++ = newnfs_true; 5252 if (lastbyte < off) 5253 lastbyte = off; 5254 else if (lastbyte >= (off + len)) 5255 lastbyte = off + len - 1; 5256 txdr_hyper(lastbyte, tl); 5257 tl += 2; 5258 *tl++ = newnfs_false; 5259 *tl++ = txdr_unsigned(layouttype); 5260 /* All supported layouts are 0 length. */ 5261 *tl = txdr_unsigned(0); 5262 nd->nd_flag |= ND_USEGSSNAME; 5263 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5264 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5265 if (error != 0) 5266 return (error); 5267 error = nd->nd_repstat; 5268 mbuf_freem(nd->nd_mrep); 5269 return (error); 5270 } 5271 5272 /* 5273 * Do the NFSv4.1 LayoutReturn. 5274 */ 5275 int 5276 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5277 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5278 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5279 uint32_t stat, uint32_t op, char *devid) 5280 { 5281 uint32_t *tl; 5282 struct nfsrv_descript nfsd, *nd = &nfsd; 5283 uint64_t tu64; 5284 int error; 5285 5286 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5287 0, 0); 5288 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5289 if (reclaim != 0) 5290 *tl++ = newnfs_true; 5291 else 5292 *tl++ = newnfs_false; 5293 *tl++ = txdr_unsigned(layouttype); 5294 *tl++ = txdr_unsigned(iomode); 5295 *tl = txdr_unsigned(layoutreturn); 5296 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5297 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5298 NFSX_UNSIGNED); 5299 txdr_hyper(offset, tl); 5300 tl += 2; 5301 txdr_hyper(len, tl); 5302 tl += 2; 5303 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5304 *tl++ = txdr_unsigned(stateidp->seqid); 5305 *tl++ = stateidp->other[0]; 5306 *tl++ = stateidp->other[1]; 5307 *tl++ = stateidp->other[2]; 5308 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5309 *tl = txdr_unsigned(0); 5310 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5311 if (stat != 0) { 5312 *tl = txdr_unsigned(2 * NFSX_HYPER + 5313 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5314 NFSX_UNSIGNED); 5315 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + 5316 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5317 NFSX_UNSIGNED); 5318 *tl++ = txdr_unsigned(1); /* One error. */ 5319 tu64 = 0; /* Offset. */ 5320 txdr_hyper(tu64, tl); tl += 2; 5321 tu64 = UINT64_MAX; /* Length. */ 5322 txdr_hyper(tu64, tl); tl += 2; 5323 NFSBCOPY(stateidp, tl, NFSX_STATEID); 5324 tl += (NFSX_STATEID / NFSX_UNSIGNED); 5325 *tl++ = txdr_unsigned(1); /* One error. */ 5326 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5327 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5328 *tl++ = txdr_unsigned(stat); 5329 *tl++ = txdr_unsigned(op); 5330 } else { 5331 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5332 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5333 /* No ioerrs. */ 5334 *tl++ = 0; 5335 } 5336 *tl = 0; /* No stats yet. */ 5337 } 5338 } 5339 nd->nd_flag |= ND_USEGSSNAME; 5340 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5341 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5342 if (error != 0) 5343 return (error); 5344 if (nd->nd_repstat == 0) { 5345 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5346 if (*tl != 0) { 5347 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5348 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5349 stateidp->other[0] = *tl++; 5350 stateidp->other[1] = *tl++; 5351 stateidp->other[2] = *tl; 5352 } 5353 } else 5354 error = nd->nd_repstat; 5355 nfsmout: 5356 mbuf_freem(nd->nd_mrep); 5357 return (error); 5358 } 5359 5360 /* 5361 * Acquire a layout and devinfo, if possible. The caller must have acquired 5362 * a reference count on the nfsclclient structure before calling this. 5363 * Return the layout in lypp with a reference count on it, if successful. 5364 */ 5365 static int 5366 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5367 int iomode, uint32_t rw, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, 5368 uint64_t off, struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5369 { 5370 struct nfscllayout *lyp; 5371 struct nfsclflayout *flp; 5372 struct nfsclflayouthead flh; 5373 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5374 nfsv4stateid_t stateid; 5375 struct nfsclsession *tsep; 5376 5377 *lypp = NULL; 5378 if (NFSHASFLEXFILE(nmp)) 5379 layouttype = NFSLAYOUT_FLEXFILE; 5380 else 5381 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5382 /* 5383 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5384 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5385 * flp == NULL. 5386 */ 5387 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5388 off, rw, &flp, &recalled); 5389 islocked = 0; 5390 if (lyp == NULL || flp == NULL) { 5391 if (recalled != 0) 5392 return (EIO); 5393 LIST_INIT(&flh); 5394 tsep = nfsmnt_mdssession(nmp); 5395 layoutlen = tsep->nfsess_maxcache - 5396 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5397 if (lyp == NULL) { 5398 stateid.seqid = 0; 5399 stateid.other[0] = stateidp->other[0]; 5400 stateid.other[1] = stateidp->other[1]; 5401 stateid.other[2] = stateidp->other[2]; 5402 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5403 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5404 (uint64_t)0, layouttype, layoutlen, &stateid, 5405 &retonclose, &flh, cred, p, NULL); 5406 } else { 5407 islocked = 1; 5408 stateid.seqid = lyp->nfsly_stateid.seqid; 5409 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5410 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5411 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5412 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5413 nfhp->nfh_len, iomode, off, UINT64_MAX, 5414 (uint64_t)0, layouttype, layoutlen, &stateid, 5415 &retonclose, &flh, cred, p, NULL); 5416 } 5417 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5418 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5419 &flh, layouttype, error, NULL, cred, p); 5420 if (error == 0) 5421 *lypp = lyp; 5422 else if (islocked != 0) 5423 nfscl_rellayout(lyp, 1); 5424 } else 5425 *lypp = lyp; 5426 return (error); 5427 } 5428 5429 /* 5430 * Do a TCP connection plus exchange id and create session. 5431 * If successful, a "struct nfsclds" is linked into the list for the 5432 * mount point and a pointer to it is returned. 5433 */ 5434 static int 5435 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5436 struct sockaddr_in6 *sin6, sa_family_t af, int vers, struct nfsclds **dspp, 5437 NFSPROC_T *p) 5438 { 5439 struct sockaddr_in *msad, *sad; 5440 struct sockaddr_in6 *msad6, *sad6; 5441 struct nfsclclient *clp; 5442 struct nfssockreq *nrp; 5443 struct nfsclds *dsp, *tdsp; 5444 int error; 5445 enum nfsclds_state retv; 5446 uint32_t sequenceid; 5447 5448 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5449 ("nfsrpc_fillsa: NULL nr_cred")); 5450 NFSLOCKCLSTATE(); 5451 clp = nmp->nm_clp; 5452 NFSUNLOCKCLSTATE(); 5453 if (clp == NULL) 5454 return (EPERM); 5455 if (af == AF_INET) { 5456 NFSLOCKMNT(nmp); 5457 /* 5458 * Check to see if we already have a session for this 5459 * address that is usable for a DS. 5460 * Note that the MDS's address is in a different place 5461 * than the sessions already acquired for DS's. 5462 */ 5463 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5464 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5465 while (tdsp != NULL) { 5466 if (msad != NULL && msad->sin_family == AF_INET && 5467 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5468 sin->sin_port == msad->sin_port && 5469 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5470 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5471 *dspp = tdsp; 5472 NFSUNLOCKMNT(nmp); 5473 NFSCL_DEBUG(4, "fnd same addr\n"); 5474 return (0); 5475 } 5476 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5477 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5478 msad = (struct sockaddr_in *) 5479 tdsp->nfsclds_sockp->nr_nam; 5480 else 5481 msad = NULL; 5482 } 5483 NFSUNLOCKMNT(nmp); 5484 5485 /* No IP address match, so look for new/trunked one. */ 5486 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5487 sad->sin_len = sizeof(*sad); 5488 sad->sin_family = AF_INET; 5489 sad->sin_port = sin->sin_port; 5490 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5491 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5492 nrp->nr_nam = (struct sockaddr *)sad; 5493 } else if (af == AF_INET6) { 5494 NFSLOCKMNT(nmp); 5495 /* 5496 * Check to see if we already have a session for this 5497 * address that is usable for a DS. 5498 * Note that the MDS's address is in a different place 5499 * than the sessions already acquired for DS's. 5500 */ 5501 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5502 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5503 while (tdsp != NULL) { 5504 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5505 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5506 &msad6->sin6_addr) && 5507 sin6->sin6_port == msad6->sin6_port && 5508 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5509 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5510 *dspp = tdsp; 5511 NFSUNLOCKMNT(nmp); 5512 return (0); 5513 } 5514 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5515 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5516 msad6 = (struct sockaddr_in6 *) 5517 tdsp->nfsclds_sockp->nr_nam; 5518 else 5519 msad6 = NULL; 5520 } 5521 NFSUNLOCKMNT(nmp); 5522 5523 /* No IP address match, so look for new/trunked one. */ 5524 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5525 sad6->sin6_len = sizeof(*sad6); 5526 sad6->sin6_family = AF_INET6; 5527 sad6->sin6_port = sin6->sin6_port; 5528 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5529 sizeof(struct in6_addr)); 5530 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5531 nrp->nr_nam = (struct sockaddr *)sad6; 5532 } else 5533 return (EPERM); 5534 5535 nrp->nr_sotype = SOCK_STREAM; 5536 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5537 nrp->nr_prog = NFS_PROG; 5538 nrp->nr_vers = vers; 5539 5540 /* 5541 * Use the credentials that were used for the mount, which are 5542 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5543 * Ref. counting the credentials with crhold() is probably not 5544 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5545 * unmount, but I did it anyhow. 5546 */ 5547 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5548 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5549 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5550 5551 dsp = NULL; 5552 /* Now, do the exchangeid and create session. */ 5553 if (error == 0) { 5554 if (vers == NFS_VER4) { 5555 error = nfsrpc_exchangeid(nmp, clp, nrp, 5556 NFSV4EXCH_USEPNFSDS, &dsp, nrp->nr_cred, p); 5557 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5558 if (error != 0) 5559 newnfs_disconnect(nrp); 5560 } else { 5561 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5562 M_WAITOK | M_ZERO); 5563 dsp->nfsclds_flags |= NFSCLDS_DS; 5564 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5565 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5566 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5567 NULL, MTX_DEF); 5568 } 5569 } 5570 if (error == 0) { 5571 dsp->nfsclds_sockp = nrp; 5572 if (vers == NFS_VER4) { 5573 NFSLOCKMNT(nmp); 5574 retv = nfscl_getsameserver(nmp, dsp, &tdsp, 5575 &sequenceid); 5576 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5577 if (retv == NFSDSP_USETHISSESSION && 5578 nfscl_dssameconn != 0) { 5579 NFSLOCKDS(tdsp); 5580 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN; 5581 NFSUNLOCKDS(tdsp); 5582 NFSUNLOCKMNT(nmp); 5583 /* 5584 * If there is already a session for this 5585 * server, use it. 5586 */ 5587 (void)newnfs_disconnect(nrp); 5588 nfscl_freenfsclds(dsp); 5589 *dspp = tdsp; 5590 return (0); 5591 } 5592 if (retv == NFSDSP_NOTFOUND) 5593 sequenceid = 5594 dsp->nfsclds_sess.nfsess_sequenceid; 5595 NFSUNLOCKMNT(nmp); 5596 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5597 nrp, sequenceid, 0, nrp->nr_cred, p); 5598 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5599 } 5600 } else { 5601 NFSFREECRED(nrp->nr_cred); 5602 NFSFREEMUTEX(&nrp->nr_mtx); 5603 free(nrp->nr_nam, M_SONAME); 5604 free(nrp, M_NFSSOCKREQ); 5605 } 5606 if (error == 0) { 5607 NFSCL_DEBUG(3, "add DS session\n"); 5608 /* 5609 * Put it at the end of the list. That way the list 5610 * is ordered by when the entry was added. This matters 5611 * since the one done first is the one that should be 5612 * used for sequencid'ing any subsequent create sessions. 5613 */ 5614 NFSLOCKMNT(nmp); 5615 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5616 NFSUNLOCKMNT(nmp); 5617 *dspp = dsp; 5618 } else if (dsp != NULL) { 5619 newnfs_disconnect(nrp); 5620 nfscl_freenfsclds(dsp); 5621 } 5622 return (error); 5623 } 5624 5625 /* 5626 * Do the NFSv4.1 Reclaim Complete. 5627 */ 5628 int 5629 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5630 { 5631 uint32_t *tl; 5632 struct nfsrv_descript nfsd; 5633 struct nfsrv_descript *nd = &nfsd; 5634 int error; 5635 5636 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5637 0); 5638 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5639 *tl = newnfs_false; 5640 nd->nd_flag |= ND_USEGSSNAME; 5641 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5642 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5643 if (error != 0) 5644 return (error); 5645 error = nd->nd_repstat; 5646 mbuf_freem(nd->nd_mrep); 5647 return (error); 5648 } 5649 5650 /* 5651 * Initialize the slot tables for a session. 5652 */ 5653 static void 5654 nfscl_initsessionslots(struct nfsclsession *sep) 5655 { 5656 int i; 5657 5658 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5659 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5660 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5661 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5662 } 5663 for (i = 0; i < 64; i++) 5664 sep->nfsess_slotseq[i] = 0; 5665 sep->nfsess_slots = 0; 5666 } 5667 5668 /* 5669 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5670 */ 5671 int 5672 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5673 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5674 { 5675 struct nfsnode *np = VTONFS(vp); 5676 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5677 struct nfscllayout *layp; 5678 struct nfscldevinfo *dip; 5679 struct nfsclflayout *rflp; 5680 struct mbuf *m; 5681 struct nfsclwritedsdorpc *drpc, *tdrpc; 5682 nfsv4stateid_t stateid; 5683 struct ucred *newcred; 5684 uint64_t lastbyte, len, off, oresid, xfer; 5685 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5686 void *lckp; 5687 uint8_t *dev; 5688 void *iovbase = NULL; 5689 size_t iovlen = 0; 5690 off_t offs = 0; 5691 ssize_t resid = 0; 5692 5693 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5694 (np->n_flag & NNOLAYOUT) != 0) 5695 return (EIO); 5696 /* Now, get a reference cnt on the clientid for this mount. */ 5697 if (nfscl_getref(nmp) == 0) 5698 return (EIO); 5699 5700 /* Find an appropriate stateid. */ 5701 newcred = NFSNEWCRED(cred); 5702 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5703 rwaccess, 1, newcred, p, &stateid, &lckp); 5704 if (error != 0) { 5705 NFSFREECRED(newcred); 5706 nfscl_relref(nmp); 5707 return (error); 5708 } 5709 /* Search for a layout for this file. */ 5710 off = uiop->uio_offset; 5711 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5712 np->n_fhp->nfh_len, off, rwaccess, &rflp, &recalled); 5713 if (layp == NULL || rflp == NULL) { 5714 if (recalled != 0) { 5715 NFSFREECRED(newcred); 5716 if (lckp != NULL) 5717 nfscl_lockderef(lckp); 5718 nfscl_relref(nmp); 5719 return (EIO); 5720 } 5721 if (layp != NULL) { 5722 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5723 layp = NULL; 5724 } 5725 /* Try and get a Layout, if it is supported. */ 5726 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5727 (np->n_flag & NWRITEOPENED) != 0) 5728 iolaymode = NFSLAYOUTIOMODE_RW; 5729 else 5730 iolaymode = NFSLAYOUTIOMODE_READ; 5731 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5732 rwaccess, NULL, &stateid, off, &layp, newcred, p); 5733 if (error != 0) { 5734 NFSLOCKNODE(np); 5735 np->n_flag |= NNOLAYOUT; 5736 NFSUNLOCKNODE(np); 5737 if (lckp != NULL) 5738 nfscl_lockderef(lckp); 5739 NFSFREECRED(newcred); 5740 if (layp != NULL) 5741 nfscl_rellayout(layp, 0); 5742 nfscl_relref(nmp); 5743 return (error); 5744 } 5745 } 5746 5747 /* 5748 * Loop around finding a layout that works for the first part of 5749 * this I/O operation, and then call the function that actually 5750 * does the RPC. 5751 */ 5752 eof = 0; 5753 len = (uint64_t)uiop->uio_resid; 5754 while (len > 0 && error == 0 && eof == 0) { 5755 off = uiop->uio_offset; 5756 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5757 if (error == 0) { 5758 oresid = xfer = (uint64_t)uiop->uio_resid; 5759 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5760 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5761 /* 5762 * For Flex File layout with mirrored DSs, select one 5763 * of them at random for reads. For writes and commits, 5764 * do all mirrors. 5765 */ 5766 m = NULL; 5767 tdrpc = drpc = NULL; 5768 firstmirror = 0; 5769 mirrorcnt = 1; 5770 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5771 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5772 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5773 firstmirror = arc4random() % mirrorcnt; 5774 mirrorcnt = firstmirror + 1; 5775 } else { 5776 if (docommit == 0) { 5777 /* 5778 * Save values, so uiop can be 5779 * rolled back upon a write 5780 * error. 5781 */ 5782 offs = uiop->uio_offset; 5783 resid = uiop->uio_resid; 5784 iovbase = 5785 uiop->uio_iov->iov_base; 5786 iovlen = uiop->uio_iov->iov_len; 5787 m = nfsm_uiombuflist(uiop, len, 5788 NULL, NULL); 5789 } 5790 tdrpc = drpc = malloc(sizeof(*drpc) * 5791 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5792 M_ZERO); 5793 } 5794 } 5795 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5796 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) { 5797 dev = rflp->nfsfl_ffm[i].dev; 5798 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5799 rflp->nfsfl_ffm[i].devp); 5800 } else { 5801 dev = rflp->nfsfl_dev; 5802 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5803 rflp->nfsfl_devp); 5804 } 5805 if (dip != NULL) { 5806 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 5807 != 0) 5808 error = nfscl_dofflayoutio(vp, 5809 uiop, iomode, must_commit, 5810 &eof, &stateid, rwaccess, 5811 dip, layp, rflp, off, xfer, 5812 i, docommit, m, tdrpc, 5813 newcred, p); 5814 else 5815 error = nfscl_doflayoutio(vp, 5816 uiop, iomode, must_commit, 5817 &eof, &stateid, rwaccess, 5818 dip, layp, rflp, off, xfer, 5819 docommit, newcred, p); 5820 nfscl_reldevinfo(dip); 5821 } else 5822 error = EIO; 5823 tdrpc++; 5824 } 5825 if (m != NULL) 5826 m_freem(m); 5827 tdrpc = drpc; 5828 timo = hz / 50; /* Wait for 20msec. */ 5829 if (timo < 1) 5830 timo = 1; 5831 for (i = firstmirror; i < mirrorcnt - 1 && 5832 tdrpc != NULL; i++, tdrpc++) { 5833 /* 5834 * For the unused drpc entries, both inprog and 5835 * err == 0, so this loop won't break. 5836 */ 5837 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5838 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 5839 timo); 5840 if (error == 0 && tdrpc->err != 0) 5841 error = tdrpc->err; 5842 if (rwaccess != NFSV4OPEN_ACCESSREAD && 5843 docommit == 0 && *must_commit == 0 && 5844 tdrpc->must_commit == 1) 5845 *must_commit = 1; 5846 } 5847 free(drpc, M_TEMP); 5848 if (error == 0) { 5849 if (mirrorcnt > 1 && rwaccess == 5850 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5851 NFSLOCKCLSTATE(); 5852 layp->nfsly_flags |= NFSLY_WRITTEN; 5853 NFSUNLOCKCLSTATE(); 5854 } 5855 lastbyte = off + xfer - 1; 5856 NFSLOCKCLSTATE(); 5857 if (lastbyte > layp->nfsly_lastbyte) 5858 layp->nfsly_lastbyte = lastbyte; 5859 NFSUNLOCKCLSTATE(); 5860 } else if (error == NFSERR_OPENMODE && 5861 rwaccess == NFSV4OPEN_ACCESSREAD) { 5862 NFSLOCKMNT(nmp); 5863 nmp->nm_state |= NFSSTA_OPENMODE; 5864 NFSUNLOCKMNT(nmp); 5865 } else 5866 error = EIO; 5867 if (error == 0) 5868 len -= (oresid - (uint64_t)uiop->uio_resid); 5869 else if (mirrorcnt > 1 && rwaccess == 5870 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5871 /* 5872 * In case the rpc gets retried, roll the 5873 * uio fields changed by nfsm_uiombuflist() 5874 * back. 5875 */ 5876 uiop->uio_offset = offs; 5877 uiop->uio_resid = resid; 5878 uiop->uio_iov->iov_base = iovbase; 5879 uiop->uio_iov->iov_len = iovlen; 5880 } 5881 } 5882 } 5883 if (lckp != NULL) 5884 nfscl_lockderef(lckp); 5885 NFSFREECRED(newcred); 5886 nfscl_rellayout(layp, 0); 5887 nfscl_relref(nmp); 5888 return (error); 5889 } 5890 5891 /* 5892 * Make a copy of the mbuf chain and add an mbuf for null padding, as required. 5893 */ 5894 static struct mbuf * 5895 nfsm_copym(struct mbuf *m, int off, int xfer) 5896 { 5897 struct mbuf *m2, *m3, *m4; 5898 uint32_t *tl; 5899 int rem; 5900 5901 m2 = m_copym(m, off, xfer, M_WAITOK); 5902 rem = NFSM_RNDUP(xfer) - xfer; 5903 if (rem > 0) { 5904 /* 5905 * The zero padding to a multiple of 4 bytes is required by 5906 * the XDR. So that the mbufs copied by reference aren't 5907 * modified, add an mbuf with the zero'd bytes to the list. 5908 * rem will be a maximum of 3, so one zero'd uint32_t is 5909 * sufficient. 5910 */ 5911 m3 = m2; 5912 while (m3->m_next != NULL) 5913 m3 = m3->m_next; 5914 NFSMGET(m4); 5915 tl = NFSMTOD(m4, uint32_t *); 5916 *tl = 0; 5917 mbuf_setlen(m4, rem); 5918 mbuf_setnext(m3, m4); 5919 } 5920 return (m2); 5921 } 5922 5923 /* 5924 * Find a file layout that will handle the first bytes of the requested 5925 * range and return the information from it needed to the I/O operation. 5926 */ 5927 int 5928 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5929 struct nfsclflayout **retflpp) 5930 { 5931 struct nfsclflayout *flp, *nflp, *rflp; 5932 uint32_t rw; 5933 5934 rflp = NULL; 5935 rw = rwaccess; 5936 /* For reading, do the Read list first and then the Write list. */ 5937 do { 5938 if (rw == NFSV4OPEN_ACCESSREAD) 5939 flp = LIST_FIRST(&lyp->nfsly_flayread); 5940 else 5941 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5942 while (flp != NULL) { 5943 nflp = LIST_NEXT(flp, nfsfl_list); 5944 if (flp->nfsfl_off > off) 5945 break; 5946 if (flp->nfsfl_end > off && 5947 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5948 rflp = flp; 5949 flp = nflp; 5950 } 5951 if (rw == NFSV4OPEN_ACCESSREAD) 5952 rw = NFSV4OPEN_ACCESSWRITE; 5953 else 5954 rw = 0; 5955 } while (rw != 0); 5956 if (rflp != NULL) { 5957 /* This one covers the most bytes starting at off. */ 5958 *retflpp = rflp; 5959 return (0); 5960 } 5961 return (EIO); 5962 } 5963 5964 /* 5965 * Do I/O using an NFSv4.1 file layout. 5966 */ 5967 static int 5968 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5969 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5970 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5971 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 5972 { 5973 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5974 int commit_thru_mds, error, stripe_index, stripe_pos; 5975 struct nfsnode *np; 5976 struct nfsfh *fhp; 5977 struct nfsclds **dspp; 5978 5979 np = VTONFS(vp); 5980 rel_off = off - flp->nfsfl_patoff; 5981 stripe_unit_size = flp->nfsfl_util & NFSFLAYUTIL_STRIPE_MASK; 5982 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5983 dp->nfsdi_stripecnt; 5984 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5985 error = 0; 5986 5987 /* Loop around, doing I/O for each stripe unit. */ 5988 while (len > 0 && error == 0) { 5989 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5990 dspp = nfsfldi_addr(dp, stripe_index); 5991 if (len > transfer && docommit == 0) 5992 xfer = transfer; 5993 else 5994 xfer = len; 5995 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5996 /* Dense layout. */ 5997 if (stripe_pos >= flp->nfsfl_fhcnt) 5998 return (EIO); 5999 fhp = flp->nfsfl_fh[stripe_pos]; 6000 io_off = (rel_off / (stripe_unit_size * 6001 dp->nfsdi_stripecnt)) * stripe_unit_size + 6002 rel_off % stripe_unit_size; 6003 } else { 6004 /* Sparse layout. */ 6005 if (flp->nfsfl_fhcnt > 1) { 6006 if (stripe_index >= flp->nfsfl_fhcnt) 6007 return (EIO); 6008 fhp = flp->nfsfl_fh[stripe_index]; 6009 } else if (flp->nfsfl_fhcnt == 1) 6010 fhp = flp->nfsfl_fh[0]; 6011 else 6012 fhp = np->n_fhp; 6013 io_off = off; 6014 } 6015 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 6016 commit_thru_mds = 1; 6017 if (docommit != 0) 6018 error = EIO; 6019 } else { 6020 commit_thru_mds = 0; 6021 NFSLOCKNODE(np); 6022 np->n_flag |= NDSCOMMIT; 6023 NFSUNLOCKNODE(np); 6024 } 6025 if (docommit != 0) { 6026 if (error == 0) 6027 error = nfsrpc_commitds(vp, io_off, xfer, 6028 *dspp, fhp, 0, 0, cred, p); 6029 if (error == 0) { 6030 /* 6031 * Set both eof and uio_resid = 0 to end any 6032 * loops. 6033 */ 6034 *eofp = 1; 6035 uiop->uio_resid = 0; 6036 } else { 6037 NFSLOCKNODE(np); 6038 np->n_flag &= ~NDSCOMMIT; 6039 NFSUNLOCKNODE(np); 6040 } 6041 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6042 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6043 io_off, xfer, fhp, 0, 0, 0, cred, p); 6044 else { 6045 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 6046 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 6047 0, 0, 0, cred, p); 6048 if (error == 0) { 6049 NFSLOCKCLSTATE(); 6050 lyp->nfsly_flags |= NFSLY_WRITTEN; 6051 NFSUNLOCKCLSTATE(); 6052 } 6053 } 6054 if (error == 0) { 6055 transfer = stripe_unit_size; 6056 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 6057 len -= xfer; 6058 off += xfer; 6059 } 6060 } 6061 return (error); 6062 } 6063 6064 /* 6065 * Do I/O using an NFSv4.1 flex file layout. 6066 */ 6067 static int 6068 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6069 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6070 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6071 uint64_t len, int mirror, int docommit, struct mbuf *mp, 6072 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6073 { 6074 uint64_t transfer, xfer; 6075 int error, rel_off; 6076 struct nfsnode *np; 6077 struct nfsfh *fhp; 6078 struct nfsclds **dspp; 6079 struct ucred *tcred; 6080 struct mbuf *m; 6081 6082 np = VTONFS(vp); 6083 error = 0; 6084 rel_off = 0; 6085 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 6086 (uintmax_t)len); 6087 /* Loop around, doing I/O for each stripe unit. */ 6088 while (len > 0 && error == 0) { 6089 dspp = nfsfldi_addr(dp, 0); 6090 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 6091 stateidp = &flp->nfsfl_ffm[mirror].st; 6092 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 6093 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 6094 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 6095 tcred = NFSNEWCRED(cred); 6096 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 6097 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 6098 tcred->cr_ngroups = 1; 6099 } else 6100 tcred = cred; 6101 if (rwflag == NFSV4OPEN_ACCESSREAD) 6102 transfer = dp->nfsdi_rsize; 6103 else 6104 transfer = dp->nfsdi_wsize; 6105 NFSLOCKNODE(np); 6106 np->n_flag |= NDSCOMMIT; 6107 NFSUNLOCKNODE(np); 6108 if (len > transfer && docommit == 0) 6109 xfer = transfer; 6110 else 6111 xfer = len; 6112 if (docommit != 0) { 6113 if (error == 0) { 6114 /* 6115 * Do last mirrored DS commit with this thread. 6116 */ 6117 if (mirror < flp->nfsfl_mirrorcnt - 1) 6118 error = nfsio_commitds(vp, off, xfer, 6119 *dspp, fhp, dp->nfsdi_vers, 6120 dp->nfsdi_minorvers, drpc, tcred, 6121 p); 6122 else 6123 error = nfsrpc_commitds(vp, off, xfer, 6124 *dspp, fhp, dp->nfsdi_vers, 6125 dp->nfsdi_minorvers, tcred, p); 6126 NFSCL_DEBUG(4, "commitds=%d\n", error); 6127 if (error != 0 && error != EACCES && error != 6128 ESTALE) { 6129 NFSCL_DEBUG(4, 6130 "DS layreterr for commit\n"); 6131 nfscl_dserr(NFSV4OP_COMMIT, error, dp, 6132 lyp, *dspp); 6133 } 6134 } 6135 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6136 if (error == 0) { 6137 /* 6138 * Set both eof and uio_resid = 0 to end any 6139 * loops. 6140 */ 6141 *eofp = 1; 6142 uiop->uio_resid = 0; 6143 } else { 6144 NFSLOCKNODE(np); 6145 np->n_flag &= ~NDSCOMMIT; 6146 NFSUNLOCKNODE(np); 6147 } 6148 } else if (rwflag == NFSV4OPEN_ACCESSREAD) { 6149 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6150 off, xfer, fhp, 1, dp->nfsdi_vers, 6151 dp->nfsdi_minorvers, tcred, p); 6152 NFSCL_DEBUG(4, "readds=%d\n", error); 6153 if (error != 0 && error != EACCES && error != ESTALE) { 6154 NFSCL_DEBUG(4, "DS layreterr for read\n"); 6155 nfscl_dserr(NFSV4OP_READ, error, dp, lyp, 6156 *dspp); 6157 } 6158 } else { 6159 if (flp->nfsfl_mirrorcnt == 1) { 6160 error = nfsrpc_writeds(vp, uiop, iomode, 6161 must_commit, stateidp, *dspp, off, xfer, 6162 fhp, 0, 1, dp->nfsdi_vers, 6163 dp->nfsdi_minorvers, tcred, p); 6164 if (error == 0) { 6165 NFSLOCKCLSTATE(); 6166 lyp->nfsly_flags |= NFSLY_WRITTEN; 6167 NFSUNLOCKCLSTATE(); 6168 } 6169 } else { 6170 m = nfsm_copym(mp, rel_off, xfer); 6171 NFSCL_DEBUG(4, "mcopy reloff=%d xfer=%jd\n", 6172 rel_off, (uintmax_t)xfer); 6173 /* 6174 * Do the writes after the first loop iteration 6175 * and the write for the last mirror via this 6176 * thread. 6177 * This loop only iterates for small values 6178 * of nfsdi_wsize, which may never occur in 6179 * practice. However, the drpc is completely 6180 * used by the first iteration and, as such, 6181 * cannot be used after that. 6182 */ 6183 if (mirror < flp->nfsfl_mirrorcnt - 1 && 6184 rel_off == 0) 6185 error = nfsio_writedsmir(vp, iomode, 6186 must_commit, stateidp, *dspp, off, 6187 xfer, fhp, m, dp->nfsdi_vers, 6188 dp->nfsdi_minorvers, drpc, tcred, 6189 p); 6190 else 6191 error = nfsrpc_writedsmir(vp, iomode, 6192 must_commit, stateidp, *dspp, off, 6193 xfer, fhp, m, dp->nfsdi_vers, 6194 dp->nfsdi_minorvers, tcred, p); 6195 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); 6196 if (error != 0 && error != EACCES && error != 6197 ESTALE) { 6198 NFSCL_DEBUG(4, 6199 "DS layreterr for write\n"); 6200 nfscl_dserr(NFSV4OP_WRITE, error, dp, 6201 lyp, *dspp); 6202 } 6203 } 6204 } 6205 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error); 6206 if (error == 0) { 6207 len -= xfer; 6208 off += xfer; 6209 rel_off += xfer; 6210 } 6211 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6212 NFSFREECRED(tcred); 6213 } 6214 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6215 return (error); 6216 } 6217 6218 /* 6219 * The actual read RPC done to a DS. 6220 */ 6221 static int 6222 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6223 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6224 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6225 { 6226 uint32_t *tl; 6227 int attrflag, error, retlen; 6228 struct nfsrv_descript nfsd; 6229 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6230 struct nfsrv_descript *nd = &nfsd; 6231 struct nfssockreq *nrp; 6232 struct nfsvattr na; 6233 6234 nd->nd_mrep = NULL; 6235 if (vers == 0 || vers == NFS_VER4) { 6236 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6237 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6238 vers = NFS_VER4; 6239 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6240 if (flex != 0) 6241 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6242 else 6243 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6244 } else { 6245 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6246 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6247 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READ]); 6248 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READDS]); 6249 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6250 } 6251 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6252 txdr_hyper(io_off, tl); 6253 *(tl + 2) = txdr_unsigned(len); 6254 nrp = dsp->nfsclds_sockp; 6255 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 6256 if (nrp == NULL) 6257 /* If NULL, use the MDS socket. */ 6258 nrp = &nmp->nm_sockreq; 6259 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6260 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6261 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat, 6262 error); 6263 if (error != 0) 6264 return (error); 6265 if (vers == NFS_VER3) { 6266 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6267 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6268 if (error != 0) 6269 goto nfsmout; 6270 } 6271 if (nd->nd_repstat != 0) { 6272 error = nd->nd_repstat; 6273 goto nfsmout; 6274 } 6275 if (vers == NFS_VER3) { 6276 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6277 *eofp = fxdr_unsigned(int, *(tl + 1)); 6278 } else { 6279 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6280 *eofp = fxdr_unsigned(int, *tl); 6281 } 6282 NFSM_STRSIZ(retlen, len); 6283 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6284 error = nfsm_mbufuio(nd, uiop, retlen); 6285 nfsmout: 6286 if (nd->nd_mrep != NULL) 6287 mbuf_freem(nd->nd_mrep); 6288 return (error); 6289 } 6290 6291 /* 6292 * The actual write RPC done to a DS. 6293 */ 6294 static int 6295 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6296 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6297 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6298 struct ucred *cred, NFSPROC_T *p) 6299 { 6300 uint32_t *tl; 6301 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6302 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6303 int32_t backup; 6304 struct nfsrv_descript nfsd; 6305 struct nfsrv_descript *nd = &nfsd; 6306 struct nfssockreq *nrp; 6307 struct nfsvattr na; 6308 6309 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6310 nd->nd_mrep = NULL; 6311 if (vers == 0 || vers == NFS_VER4) { 6312 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6313 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6314 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6315 vers = NFS_VER4; 6316 if (flex != 0) 6317 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6318 else 6319 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6320 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6321 } else { 6322 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6323 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6324 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6325 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6326 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6327 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6328 } 6329 txdr_hyper(io_off, tl); 6330 tl += 2; 6331 if (vers == NFS_VER3) 6332 *tl++ = txdr_unsigned(len); 6333 *tl++ = txdr_unsigned(*iomode); 6334 *tl = txdr_unsigned(len); 6335 nfsm_uiombuf(nd, uiop, len); 6336 nrp = dsp->nfsclds_sockp; 6337 if (nrp == NULL) 6338 /* If NULL, use the MDS socket. */ 6339 nrp = &nmp->nm_sockreq; 6340 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6341 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6342 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6343 nd->nd_repstat); 6344 if (error != 0) 6345 return (error); 6346 if (nd->nd_repstat != 0) { 6347 /* 6348 * In case the rpc gets retried, roll 6349 * the uio fileds changed by nfsm_uiombuf() 6350 * back. 6351 */ 6352 uiop->uio_offset -= len; 6353 uio_uio_resid_add(uiop, len); 6354 uio_iov_base_add(uiop, -len); 6355 uio_iov_len_add(uiop, len); 6356 error = nd->nd_repstat; 6357 } else { 6358 if (vers == NFS_VER3) { 6359 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6360 NULL); 6361 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6362 if (error != 0) 6363 goto nfsmout; 6364 } 6365 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6366 rlen = fxdr_unsigned(int, *tl++); 6367 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6368 if (rlen == 0) { 6369 error = NFSERR_IO; 6370 goto nfsmout; 6371 } else if (rlen < len) { 6372 backup = len - rlen; 6373 uio_iov_base_add(uiop, -(backup)); 6374 uio_iov_len_add(uiop, backup); 6375 uiop->uio_offset -= backup; 6376 uio_uio_resid_add(uiop, backup); 6377 len = rlen; 6378 } 6379 commit = fxdr_unsigned(int, *tl++); 6380 6381 /* 6382 * Return the lowest commitment level 6383 * obtained by any of the RPCs. 6384 */ 6385 if (committed == NFSWRITE_FILESYNC) 6386 committed = commit; 6387 else if (committed == NFSWRITE_DATASYNC && 6388 commit == NFSWRITE_UNSTABLE) 6389 committed = commit; 6390 if (commit_thru_mds != 0) { 6391 NFSLOCKMNT(nmp); 6392 if (!NFSHASWRITEVERF(nmp)) { 6393 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6394 NFSSETWRITEVERF(nmp); 6395 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF) && 6396 *must_commit != 2) { 6397 *must_commit = 1; 6398 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6399 } 6400 NFSUNLOCKMNT(nmp); 6401 } else { 6402 NFSLOCKDS(dsp); 6403 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6404 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6405 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6406 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) && 6407 *must_commit != 2) { 6408 *must_commit = 1; 6409 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6410 } 6411 NFSUNLOCKDS(dsp); 6412 } 6413 } 6414 nfsmout: 6415 if (nd->nd_mrep != NULL) 6416 mbuf_freem(nd->nd_mrep); 6417 *iomode = committed; 6418 if (nd->nd_repstat != 0 && error == 0) 6419 error = nd->nd_repstat; 6420 return (error); 6421 } 6422 6423 /* 6424 * The actual write RPC done to a DS. 6425 * This variant is called from a separate kernel process for mirrors. 6426 * Any short write is considered an IO error. 6427 */ 6428 static int 6429 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6430 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6431 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6432 struct ucred *cred, NFSPROC_T *p) 6433 { 6434 uint32_t *tl; 6435 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6436 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6437 struct nfsrv_descript nfsd; 6438 struct nfsrv_descript *nd = &nfsd; 6439 struct nfssockreq *nrp; 6440 struct nfsvattr na; 6441 6442 nd->nd_mrep = NULL; 6443 if (vers == 0 || vers == NFS_VER4) { 6444 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6445 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6446 vers = NFS_VER4; 6447 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6448 minorvers); 6449 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6450 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6451 } else { 6452 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6453 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6454 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6455 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6456 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6457 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6458 } 6459 txdr_hyper(io_off, tl); 6460 tl += 2; 6461 if (vers == NFS_VER3) 6462 *tl++ = txdr_unsigned(len); 6463 *tl++ = txdr_unsigned(*iomode); 6464 *tl = txdr_unsigned(len); 6465 if (len > 0) { 6466 /* Put data in mbuf chain. */ 6467 nd->nd_mb->m_next = m; 6468 /* Set nd_mb and nd_bpos to end of data. */ 6469 while (m->m_next != NULL) 6470 m = m->m_next; 6471 nd->nd_mb = m; 6472 nd->nd_bpos = mtod(m, char *) + m->m_len; 6473 NFSCL_DEBUG(4, "nfsrpc_writedsmir: lastmb len=%d\n", m->m_len); 6474 } 6475 nrp = dsp->nfsclds_sockp; 6476 if (nrp == NULL) 6477 /* If NULL, use the MDS socket. */ 6478 nrp = &nmp->nm_sockreq; 6479 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6480 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6481 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6482 nd->nd_repstat); 6483 if (error != 0) 6484 return (error); 6485 if (nd->nd_repstat != 0) 6486 error = nd->nd_repstat; 6487 else { 6488 if (vers == NFS_VER3) { 6489 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6490 NULL); 6491 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6492 error); 6493 if (error != 0) 6494 goto nfsmout; 6495 } 6496 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6497 rlen = fxdr_unsigned(int, *tl++); 6498 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6499 rlen); 6500 if (rlen != len) { 6501 error = NFSERR_IO; 6502 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6503 len, rlen); 6504 goto nfsmout; 6505 } 6506 commit = fxdr_unsigned(int, *tl++); 6507 6508 /* 6509 * Return the lowest commitment level 6510 * obtained by any of the RPCs. 6511 */ 6512 if (committed == NFSWRITE_FILESYNC) 6513 committed = commit; 6514 else if (committed == NFSWRITE_DATASYNC && 6515 commit == NFSWRITE_UNSTABLE) 6516 committed = commit; 6517 NFSLOCKDS(dsp); 6518 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6519 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6520 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6521 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF) && 6522 *must_commit != 2) { 6523 *must_commit = 1; 6524 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6525 } 6526 NFSUNLOCKDS(dsp); 6527 } 6528 nfsmout: 6529 if (nd->nd_mrep != NULL) 6530 mbuf_freem(nd->nd_mrep); 6531 *iomode = committed; 6532 if (nd->nd_repstat != 0 && error == 0) 6533 error = nd->nd_repstat; 6534 return (error); 6535 } 6536 6537 /* 6538 * Start up the thread that will execute nfsrpc_writedsmir(). 6539 */ 6540 static void 6541 start_writedsmir(void *arg, int pending) 6542 { 6543 struct nfsclwritedsdorpc *drpc; 6544 6545 drpc = (struct nfsclwritedsdorpc *)arg; 6546 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6547 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6548 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6549 drpc->p); 6550 drpc->done = 1; 6551 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6552 } 6553 6554 /* 6555 * Set up the write DS mirror call for the pNFS I/O thread. 6556 */ 6557 static int 6558 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6559 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6560 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6561 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6562 { 6563 int error, ret; 6564 6565 error = 0; 6566 drpc->done = 0; 6567 drpc->vp = vp; 6568 drpc->iomode = *iomode; 6569 drpc->must_commit = *must_commit; 6570 drpc->stateidp = stateidp; 6571 drpc->dsp = dsp; 6572 drpc->off = off; 6573 drpc->len = len; 6574 drpc->fhp = fhp; 6575 drpc->m = m; 6576 drpc->vers = vers; 6577 drpc->minorvers = minorvers; 6578 drpc->cred = cred; 6579 drpc->p = p; 6580 drpc->inprog = 0; 6581 ret = EIO; 6582 if (nfs_pnfsiothreads != 0) { 6583 ret = nfs_pnfsio(start_writedsmir, drpc); 6584 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6585 } 6586 if (ret != 0) 6587 error = nfsrpc_writedsmir(vp, iomode, &drpc->must_commit, 6588 stateidp, dsp, off, len, fhp, m, vers, minorvers, cred, p); 6589 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6590 return (error); 6591 } 6592 6593 /* 6594 * Free up the nfsclds structure. 6595 */ 6596 void 6597 nfscl_freenfsclds(struct nfsclds *dsp) 6598 { 6599 int i; 6600 6601 if (dsp == NULL) 6602 return; 6603 if (dsp->nfsclds_sockp != NULL) { 6604 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6605 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6606 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6607 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6608 } 6609 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6610 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6611 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6612 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6613 m_freem( 6614 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6615 } 6616 free(dsp, M_NFSCLDS); 6617 } 6618 6619 static enum nfsclds_state 6620 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6621 struct nfsclds **retdspp, uint32_t *sequencep) 6622 { 6623 struct nfsclds *dsp; 6624 int fndseq; 6625 6626 /* 6627 * Search the list of nfsclds structures for one with the same 6628 * server. 6629 */ 6630 fndseq = 0; 6631 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6632 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6633 dsp->nfsclds_servownlen != 0 && 6634 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6635 dsp->nfsclds_servownlen) && 6636 dsp->nfsclds_sess.nfsess_defunct == 0) { 6637 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6638 TAILQ_FIRST(&nmp->nm_sess), dsp, 6639 dsp->nfsclds_flags); 6640 if (fndseq == 0) { 6641 /* Get sequenceid# from first entry. */ 6642 *sequencep = 6643 dsp->nfsclds_sess.nfsess_sequenceid; 6644 fndseq = 1; 6645 } 6646 /* Server major id matches. */ 6647 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6648 *retdspp = dsp; 6649 return (NFSDSP_USETHISSESSION); 6650 } 6651 6652 } 6653 } 6654 if (fndseq != 0) 6655 return (NFSDSP_SEQTHISSESSION); 6656 return (NFSDSP_NOTFOUND); 6657 } 6658 6659 /* 6660 * NFS commit rpc to a NFSv4.1 DS. 6661 */ 6662 static int 6663 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6664 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6665 NFSPROC_T *p) 6666 { 6667 uint32_t *tl; 6668 struct nfsrv_descript nfsd, *nd = &nfsd; 6669 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6670 struct nfssockreq *nrp; 6671 struct nfsvattr na; 6672 int attrflag, error; 6673 6674 nd->nd_mrep = NULL; 6675 if (vers == 0 || vers == NFS_VER4) { 6676 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6677 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6678 vers = NFS_VER4; 6679 } else { 6680 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6681 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6682 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMIT]); 6683 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMITDS]); 6684 } 6685 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6686 minorvers); 6687 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6688 txdr_hyper(offset, tl); 6689 tl += 2; 6690 *tl = txdr_unsigned(cnt); 6691 nrp = dsp->nfsclds_sockp; 6692 if (nrp == NULL) 6693 /* If NULL, use the MDS socket. */ 6694 nrp = &nmp->nm_sockreq; 6695 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6696 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6697 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6698 nd->nd_repstat); 6699 if (error != 0) 6700 return (error); 6701 if (nd->nd_repstat == 0) { 6702 if (vers == NFS_VER3) { 6703 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6704 NULL); 6705 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6706 if (error != 0) 6707 goto nfsmout; 6708 } 6709 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6710 NFSLOCKDS(dsp); 6711 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6712 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6713 error = NFSERR_STALEWRITEVERF; 6714 } 6715 NFSUNLOCKDS(dsp); 6716 } 6717 nfsmout: 6718 if (error == 0 && nd->nd_repstat != 0) 6719 error = nd->nd_repstat; 6720 mbuf_freem(nd->nd_mrep); 6721 return (error); 6722 } 6723 6724 /* 6725 * Start up the thread that will execute nfsrpc_commitds(). 6726 */ 6727 static void 6728 start_commitds(void *arg, int pending) 6729 { 6730 struct nfsclwritedsdorpc *drpc; 6731 6732 drpc = (struct nfsclwritedsdorpc *)arg; 6733 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6734 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6735 drpc->p); 6736 drpc->done = 1; 6737 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6738 } 6739 6740 /* 6741 * Set up the commit DS mirror call for the pNFS I/O thread. 6742 */ 6743 static int 6744 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6745 struct nfsfh *fhp, int vers, int minorvers, 6746 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6747 { 6748 int error, ret; 6749 6750 error = 0; 6751 drpc->done = 0; 6752 drpc->vp = vp; 6753 drpc->off = offset; 6754 drpc->len = cnt; 6755 drpc->dsp = dsp; 6756 drpc->fhp = fhp; 6757 drpc->vers = vers; 6758 drpc->minorvers = minorvers; 6759 drpc->cred = cred; 6760 drpc->p = p; 6761 drpc->inprog = 0; 6762 ret = EIO; 6763 if (nfs_pnfsiothreads != 0) { 6764 ret = nfs_pnfsio(start_commitds, drpc); 6765 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6766 } 6767 if (ret != 0) 6768 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6769 minorvers, cred, p); 6770 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6771 return (error); 6772 } 6773 6774 /* 6775 * Set up the XDR arguments for the LayoutGet operation. 6776 */ 6777 static void 6778 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 6779 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 6780 int layoutlen, int usecurstateid) 6781 { 6782 uint32_t *tl; 6783 6784 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 6785 NFSX_STATEID); 6786 *tl++ = newnfs_false; /* Don't signal availability. */ 6787 *tl++ = txdr_unsigned(layouttype); 6788 *tl++ = txdr_unsigned(iomode); 6789 txdr_hyper(offset, tl); 6790 tl += 2; 6791 txdr_hyper(len, tl); 6792 tl += 2; 6793 txdr_hyper(minlen, tl); 6794 tl += 2; 6795 if (usecurstateid != 0) { 6796 /* Special stateid for Current stateid. */ 6797 *tl++ = txdr_unsigned(1); 6798 *tl++ = 0; 6799 *tl++ = 0; 6800 *tl++ = 0; 6801 } else { 6802 *tl++ = txdr_unsigned(stateidp->seqid); 6803 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 6804 *tl++ = stateidp->other[0]; 6805 *tl++ = stateidp->other[1]; 6806 *tl++ = stateidp->other[2]; 6807 } 6808 *tl = txdr_unsigned(layoutlen); 6809 } 6810 6811 /* 6812 * Parse the reply for a successful LayoutGet operation. 6813 */ 6814 static int 6815 nfsrv_parselayoutget(struct nfsrv_descript *nd, nfsv4stateid_t *stateidp, 6816 int *retonclosep, struct nfsclflayouthead *flhp) 6817 { 6818 uint32_t *tl; 6819 struct nfsclflayout *flp, *prevflp, *tflp; 6820 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 6821 int m, mirrorcnt; 6822 uint64_t retlen, off; 6823 struct nfsfh *nfhp; 6824 uint8_t *cp; 6825 uid_t user; 6826 gid_t grp; 6827 6828 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 6829 error = 0; 6830 flp = NULL; 6831 gotiomode = -1; 6832 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 6833 if (*tl++ != 0) 6834 *retonclosep = 1; 6835 else 6836 *retonclosep = 0; 6837 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 6838 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 6839 (int)stateidp->seqid); 6840 stateidp->other[0] = *tl++; 6841 stateidp->other[1] = *tl++; 6842 stateidp->other[2] = *tl++; 6843 cnt = fxdr_unsigned(int, *tl); 6844 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 6845 if (cnt <= 0 || cnt > 10000) { 6846 /* Don't accept more than 10000 layouts in reply. */ 6847 error = NFSERR_BADXDR; 6848 goto nfsmout; 6849 } 6850 for (i = 0; i < cnt; i++) { 6851 /* Dissect to the layout type. */ 6852 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 6853 3 * NFSX_UNSIGNED); 6854 off = fxdr_hyper(tl); tl += 2; 6855 retlen = fxdr_hyper(tl); tl += 2; 6856 iomode = fxdr_unsigned(int, *tl++); 6857 laytype = fxdr_unsigned(int, *tl); 6858 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 6859 (uintmax_t)off, (uintmax_t)retlen, iomode); 6860 /* Ignore length of layout body for now. */ 6861 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 6862 /* Parse the File layout up to fhcnt. */ 6863 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 6864 NFSX_HYPER + NFSX_V4DEVICEID); 6865 fhcnt = fxdr_unsigned(int, *(tl + 4 + 6866 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 6867 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 6868 if (fhcnt < 0 || fhcnt > 100) { 6869 /* Don't accept more than 100 file handles. */ 6870 error = NFSERR_BADXDR; 6871 goto nfsmout; 6872 } 6873 if (fhcnt > 0) 6874 flp = malloc(sizeof(*flp) + fhcnt * 6875 sizeof(struct nfsfh *), M_NFSFLAYOUT, 6876 M_WAITOK); 6877 else 6878 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 6879 M_WAITOK); 6880 flp->nfsfl_flags = NFSFL_FILE; 6881 flp->nfsfl_fhcnt = 0; 6882 flp->nfsfl_devp = NULL; 6883 flp->nfsfl_off = off; 6884 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 6885 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 6886 else 6887 flp->nfsfl_end = flp->nfsfl_off + retlen; 6888 flp->nfsfl_iomode = iomode; 6889 if (gotiomode == -1) 6890 gotiomode = flp->nfsfl_iomode; 6891 /* Ignore layout body length for now. */ 6892 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 6893 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 6894 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 6895 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 6896 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 6897 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 6898 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 6899 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 6900 for (j = 0; j < fhcnt; j++) { 6901 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6902 nfhlen = fxdr_unsigned(int, *tl); 6903 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 6904 error = NFSERR_BADXDR; 6905 goto nfsmout; 6906 } 6907 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 6908 M_NFSFH, M_WAITOK); 6909 flp->nfsfl_fh[j] = nfhp; 6910 flp->nfsfl_fhcnt++; 6911 nfhp->nfh_len = nfhlen; 6912 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 6913 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 6914 } 6915 } else if (laytype == NFSLAYOUT_FLEXFILE) { 6916 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 6917 NFSX_HYPER); 6918 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 6919 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 6920 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 6921 error = NFSERR_BADXDR; 6922 goto nfsmout; 6923 } 6924 flp = malloc(sizeof(*flp) + mirrorcnt * 6925 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 6926 flp->nfsfl_flags = NFSFL_FLEXFILE; 6927 flp->nfsfl_mirrorcnt = mirrorcnt; 6928 for (j = 0; j < mirrorcnt; j++) 6929 flp->nfsfl_ffm[j].devp = NULL; 6930 flp->nfsfl_off = off; 6931 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 6932 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 6933 else 6934 flp->nfsfl_end = flp->nfsfl_off + retlen; 6935 flp->nfsfl_iomode = iomode; 6936 if (gotiomode == -1) 6937 gotiomode = flp->nfsfl_iomode; 6938 flp->nfsfl_stripeunit = fxdr_hyper(tl); 6939 NFSCL_DEBUG(4, "stripeunit=%ju\n", 6940 (uintmax_t)flp->nfsfl_stripeunit); 6941 for (j = 0; j < mirrorcnt; j++) { 6942 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6943 k = fxdr_unsigned(int, *tl); 6944 if (k < 1 || k > 128) { 6945 error = NFSERR_BADXDR; 6946 goto nfsmout; 6947 } 6948 NFSCL_DEBUG(4, "servercnt=%d\n", k); 6949 for (l = 0; l < k; l++) { 6950 NFSM_DISSECT(tl, uint32_t *, 6951 NFSX_V4DEVICEID + NFSX_STATEID + 6952 2 * NFSX_UNSIGNED); 6953 if (l == 0) { 6954 /* Just use the first server. */ 6955 NFSBCOPY(tl, 6956 flp->nfsfl_ffm[j].dev, 6957 NFSX_V4DEVICEID); 6958 tl += (NFSX_V4DEVICEID / 6959 NFSX_UNSIGNED); 6960 tl++; 6961 flp->nfsfl_ffm[j].st.seqid = 6962 *tl++; 6963 flp->nfsfl_ffm[j].st.other[0] = 6964 *tl++; 6965 flp->nfsfl_ffm[j].st.other[1] = 6966 *tl++; 6967 flp->nfsfl_ffm[j].st.other[2] = 6968 *tl++; 6969 NFSCL_DEBUG(4, "st.seqid=%u " 6970 "st.o0=0x%x st.o1=0x%x " 6971 "st.o2=0x%x\n", 6972 flp->nfsfl_ffm[j].st.seqid, 6973 flp->nfsfl_ffm[j].st.other[0], 6974 flp->nfsfl_ffm[j].st.other[1], 6975 flp->nfsfl_ffm[j].st.other[2]); 6976 } else 6977 tl += ((NFSX_V4DEVICEID + 6978 NFSX_STATEID + 6979 NFSX_UNSIGNED) / 6980 NFSX_UNSIGNED); 6981 fhcnt = fxdr_unsigned(int, *tl); 6982 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 6983 if (fhcnt < 1 || 6984 fhcnt > NFSDEV_MAXVERS) { 6985 error = NFSERR_BADXDR; 6986 goto nfsmout; 6987 } 6988 for (m = 0; m < fhcnt; m++) { 6989 NFSM_DISSECT(tl, uint32_t *, 6990 NFSX_UNSIGNED); 6991 nfhlen = fxdr_unsigned(int, 6992 *tl); 6993 NFSCL_DEBUG(4, "nfhlen=%d\n", 6994 nfhlen); 6995 if (nfhlen <= 0 || nfhlen > 6996 NFSX_V4FHMAX) { 6997 error = NFSERR_BADXDR; 6998 goto nfsmout; 6999 } 7000 NFSM_DISSECT(cp, uint8_t *, 7001 NFSM_RNDUP(nfhlen)); 7002 if (l == 0) { 7003 flp->nfsfl_ffm[j].fhcnt 7004 = fhcnt; 7005 nfhp = malloc( 7006 sizeof(*nfhp) + 7007 nfhlen - 1, M_NFSFH, 7008 M_WAITOK); 7009 flp->nfsfl_ffm[j].fh[m] 7010 = nfhp; 7011 nfhp->nfh_len = nfhlen; 7012 NFSBCOPY(cp, 7013 nfhp->nfh_fh, 7014 nfhlen); 7015 NFSCL_DEBUG(4, 7016 "got fh\n"); 7017 } 7018 } 7019 /* Now, get the ffsd_user/ffds_group. */ 7020 error = nfsrv_parseug(nd, 0, &user, 7021 &grp, curthread); 7022 NFSCL_DEBUG(4, "after parseu=%d\n", 7023 error); 7024 if (error == 0) 7025 error = nfsrv_parseug(nd, 1, 7026 &user, &grp, curthread); 7027 NFSCL_DEBUG(4, "aft parseg=%d\n", 7028 grp); 7029 if (error != 0) 7030 goto nfsmout; 7031 NFSCL_DEBUG(4, "user=%d group=%d\n", 7032 user, grp); 7033 if (l == 0) { 7034 flp->nfsfl_ffm[j].user = user; 7035 flp->nfsfl_ffm[j].group = grp; 7036 NFSCL_DEBUG(4, 7037 "usr=%d grp=%d\n", user, 7038 grp); 7039 } 7040 } 7041 } 7042 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7043 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 7044 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 7045 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 7046 flp->nfsfl_fflags, flp->nfsfl_statshint); 7047 } else { 7048 error = NFSERR_BADXDR; 7049 goto nfsmout; 7050 } 7051 if (flp->nfsfl_iomode == gotiomode) { 7052 /* Keep the list in increasing offset order. */ 7053 tflp = LIST_FIRST(flhp); 7054 prevflp = NULL; 7055 while (tflp != NULL && 7056 tflp->nfsfl_off < flp->nfsfl_off) { 7057 prevflp = tflp; 7058 tflp = LIST_NEXT(tflp, nfsfl_list); 7059 } 7060 if (prevflp == NULL) 7061 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 7062 else 7063 LIST_INSERT_AFTER(prevflp, flp, 7064 nfsfl_list); 7065 NFSCL_DEBUG(4, "flp inserted\n"); 7066 } else { 7067 printf("nfscl_layoutget(): got wrong iomode\n"); 7068 nfscl_freeflayout(flp); 7069 } 7070 flp = NULL; 7071 } 7072 nfsmout: 7073 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 7074 if (error != 0 && flp != NULL) 7075 nfscl_freeflayout(flp); 7076 return (error); 7077 } 7078 7079 /* 7080 * Parse a user/group digit string. 7081 */ 7082 static int 7083 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 7084 NFSPROC_T *p) 7085 { 7086 uint32_t *tl; 7087 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 7088 uint32_t len = 0; 7089 int error = 0; 7090 7091 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7092 len = fxdr_unsigned(uint32_t, *tl); 7093 str = NULL; 7094 if (len > NFSV4_OPAQUELIMIT) { 7095 error = NFSERR_BADXDR; 7096 goto nfsmout; 7097 } 7098 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 7099 if (len == 0) { 7100 if (dogrp != 0) 7101 *gidp = GID_NOGROUP; 7102 else 7103 *uidp = UID_NOBODY; 7104 return (0); 7105 } 7106 if (len > NFSV4_SMALLSTR) 7107 str = malloc(len + 1, M_TEMP, M_WAITOK); 7108 else 7109 str = str0; 7110 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 7111 NFSBCOPY(cp, str, len); 7112 str[len] = '\0'; 7113 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 7114 if (dogrp != 0) 7115 error = nfsv4_strtogid(nd, str, len, gidp, p); 7116 else 7117 error = nfsv4_strtouid(nd, str, len, uidp, p); 7118 nfsmout: 7119 if (len > NFSV4_SMALLSTR) 7120 free(str, M_TEMP); 7121 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 7122 return (error); 7123 } 7124 7125 /* 7126 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 7127 * so that it does both an Open and a Layoutget. 7128 */ 7129 static int 7130 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7131 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7132 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7133 struct ucred *cred, NFSPROC_T *p) 7134 { 7135 struct nfscllayout *lyp; 7136 struct nfsclflayout *flp; 7137 struct nfsclflayouthead flh; 7138 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 7139 int layouttype, laystat; 7140 nfsv4stateid_t stateid; 7141 struct nfsclsession *tsep; 7142 7143 error = 0; 7144 if (NFSHASFLEXFILE(nmp)) 7145 layouttype = NFSLAYOUT_FLEXFILE; 7146 else 7147 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7148 /* 7149 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7150 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7151 * flp == NULL. 7152 */ 7153 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, mode, &flp, 7154 &recalled); 7155 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7156 if (lyp == NULL) 7157 islocked = 0; 7158 else if (flp != NULL) 7159 islocked = 1; 7160 else 7161 islocked = 2; 7162 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7163 LIST_INIT(&flh); 7164 tsep = nfsmnt_mdssession(nmp); 7165 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7166 3 * NFSX_UNSIGNED); 7167 if (lyp == NULL) 7168 usecurstateid = 1; 7169 else { 7170 usecurstateid = 0; 7171 stateid.seqid = lyp->nfsly_stateid.seqid; 7172 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7173 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7174 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7175 } 7176 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7177 newfhp, newfhlen, mode, op, name, namelen, 7178 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7179 &retonclose, &flh, &laystat, cred, p); 7180 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7181 laystat, error); 7182 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7183 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7184 &islocked, cred, p); 7185 } else 7186 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7187 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7188 if (islocked == 2) 7189 nfscl_rellayout(lyp, 1); 7190 else if (islocked == 1) 7191 nfscl_rellayout(lyp, 0); 7192 return (error); 7193 } 7194 7195 /* 7196 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7197 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7198 * handled by nfsrpc_openrpc(). 7199 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7200 * can be NULL. 7201 */ 7202 static int 7203 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7204 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7205 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7206 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7207 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7208 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7209 { 7210 uint32_t *tl; 7211 struct nfsrv_descript nfsd, *nd = &nfsd; 7212 struct nfscldeleg *ndp = NULL; 7213 struct nfsvattr nfsva; 7214 struct nfsclsession *tsep; 7215 uint32_t rflags, deleg; 7216 nfsattrbit_t attrbits; 7217 int error, ret, acesize, limitby, iomode; 7218 7219 *dpp = NULL; 7220 *laystatp = ENXIO; 7221 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7222 0, 0); 7223 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7224 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7225 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7226 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7227 tsep = nfsmnt_mdssession(nmp); 7228 *tl++ = tsep->nfsess_clientid.lval[0]; 7229 *tl = tsep->nfsess_clientid.lval[1]; 7230 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7231 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7232 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7233 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7234 nfsm_strtom(nd, name, namelen); 7235 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7236 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7237 NFSZERO_ATTRBIT(&attrbits); 7238 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7239 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7240 nfsrv_putattrbit(nd, &attrbits); 7241 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7242 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7243 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7244 iomode = NFSLAYOUTIOMODE_RW; 7245 else 7246 iomode = NFSLAYOUTIOMODE_READ; 7247 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7248 layouttype, layoutlen, usecurstateid); 7249 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7250 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7251 if (error != 0) 7252 return (error); 7253 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7254 if (nd->nd_repstat != 0) 7255 *laystatp = nd->nd_repstat; 7256 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7257 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7258 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7259 6 * NFSX_UNSIGNED); 7260 op->nfso_stateid.seqid = *tl++; 7261 op->nfso_stateid.other[0] = *tl++; 7262 op->nfso_stateid.other[1] = *tl++; 7263 op->nfso_stateid.other[2] = *tl; 7264 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7265 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7266 if (error != 0) 7267 goto nfsmout; 7268 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7269 deleg = fxdr_unsigned(u_int32_t, *tl); 7270 if (deleg == NFSV4OPEN_DELEGATEREAD || 7271 deleg == NFSV4OPEN_DELEGATEWRITE) { 7272 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7273 NFSCLFLAGS_FIRSTDELEG)) 7274 op->nfso_own->nfsow_clp->nfsc_flags |= 7275 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7276 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7277 M_NFSCLDELEG, M_WAITOK); 7278 LIST_INIT(&ndp->nfsdl_owner); 7279 LIST_INIT(&ndp->nfsdl_lock); 7280 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7281 ndp->nfsdl_fhlen = newfhlen; 7282 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7283 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7284 nfscl_lockinit(&ndp->nfsdl_rwlock); 7285 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7286 NFSX_UNSIGNED); 7287 ndp->nfsdl_stateid.seqid = *tl++; 7288 ndp->nfsdl_stateid.other[0] = *tl++; 7289 ndp->nfsdl_stateid.other[1] = *tl++; 7290 ndp->nfsdl_stateid.other[2] = *tl++; 7291 ret = fxdr_unsigned(int, *tl); 7292 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7293 ndp->nfsdl_flags = NFSCLDL_WRITE; 7294 /* 7295 * Indicates how much the file can grow. 7296 */ 7297 NFSM_DISSECT(tl, u_int32_t *, 7298 3 * NFSX_UNSIGNED); 7299 limitby = fxdr_unsigned(int, *tl++); 7300 switch (limitby) { 7301 case NFSV4OPEN_LIMITSIZE: 7302 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7303 break; 7304 case NFSV4OPEN_LIMITBLOCKS: 7305 ndp->nfsdl_sizelimit = 7306 fxdr_unsigned(u_int64_t, *tl++); 7307 ndp->nfsdl_sizelimit *= 7308 fxdr_unsigned(u_int64_t, *tl); 7309 break; 7310 default: 7311 error = NFSERR_BADXDR; 7312 goto nfsmout; 7313 }; 7314 } else 7315 ndp->nfsdl_flags = NFSCLDL_READ; 7316 if (ret != 0) 7317 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7318 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 7319 &acesize, p); 7320 if (error != 0) 7321 goto nfsmout; 7322 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7323 error = NFSERR_BADXDR; 7324 goto nfsmout; 7325 } 7326 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7327 nfscl_assumeposixlocks) 7328 op->nfso_posixlock = 1; 7329 else 7330 op->nfso_posixlock = 0; 7331 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7332 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7333 if (*++tl == 0) { 7334 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7335 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7336 NULL, NULL, NULL, p, cred); 7337 if (error != 0) 7338 goto nfsmout; 7339 if (ndp != NULL) { 7340 ndp->nfsdl_change = nfsva.na_filerev; 7341 ndp->nfsdl_modtime = nfsva.na_mtime; 7342 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7343 *dpp = ndp; 7344 ndp = NULL; 7345 } 7346 /* 7347 * At this point, the Open has succeeded, so set 7348 * nd_repstat = NFS_OK. If the Layoutget failed, 7349 * this function just won't return a layout. 7350 */ 7351 if (nd->nd_repstat == 0) { 7352 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7353 *laystatp = fxdr_unsigned(int, *++tl); 7354 if (*laystatp == 0) { 7355 error = nfsrv_parselayoutget(nd, 7356 stateidp, retonclosep, flhp); 7357 if (error != 0) 7358 *laystatp = error; 7359 } 7360 } else 7361 nd->nd_repstat = 0; /* Return 0 for Open. */ 7362 } 7363 } 7364 if (nd->nd_repstat != 0 && error == 0) 7365 error = nd->nd_repstat; 7366 nfsmout: 7367 free(ndp, M_NFSCLDELEG); 7368 mbuf_freem(nd->nd_mrep); 7369 return (error); 7370 } 7371 7372 /* 7373 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7374 * Used only for mounts with pNFS enabled. 7375 */ 7376 static int 7377 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7378 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7379 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7380 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7381 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7382 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7383 struct nfsclflayouthead *flhp, int *laystatp) 7384 { 7385 uint32_t *tl; 7386 int error = 0, deleg, newone, ret, acesize, limitby; 7387 struct nfsrv_descript nfsd, *nd = &nfsd; 7388 struct nfsclopen *op; 7389 struct nfscldeleg *dp = NULL; 7390 struct nfsnode *np; 7391 struct nfsfh *nfhp; 7392 struct nfsclsession *tsep; 7393 nfsattrbit_t attrbits; 7394 nfsv4stateid_t stateid; 7395 struct nfsmount *nmp; 7396 7397 nmp = VFSTONFS(dvp->v_mount); 7398 np = VTONFS(dvp); 7399 *laystatp = ENXIO; 7400 *unlockedp = 0; 7401 *nfhpp = NULL; 7402 *dpp = NULL; 7403 *attrflagp = 0; 7404 *dattrflagp = 0; 7405 if (namelen > NFS_MAXNAMLEN) 7406 return (ENAMETOOLONG); 7407 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp); 7408 /* 7409 * For V4, this is actually an Open op. 7410 */ 7411 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7412 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7413 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7414 NFSV4OPEN_ACCESSREAD); 7415 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7416 tsep = nfsmnt_mdssession(nmp); 7417 *tl++ = tsep->nfsess_clientid.lval[0]; 7418 *tl = tsep->nfsess_clientid.lval[1]; 7419 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7420 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7421 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7422 if ((fmode & O_EXCL) != 0) { 7423 if (NFSHASSESSPERSIST(nmp)) { 7424 /* Use GUARDED for persistent sessions. */ 7425 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7426 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7427 } else { 7428 /* Otherwise, use EXCLUSIVE4_1. */ 7429 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7430 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7431 *tl++ = cverf.lval[0]; 7432 *tl = cverf.lval[1]; 7433 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7434 } 7435 } else { 7436 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7437 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7438 } 7439 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7440 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7441 nfsm_strtom(nd, name, namelen); 7442 /* Get the new file's handle and attributes, plus save the FH. */ 7443 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7444 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7445 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7446 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7447 NFSGETATTR_ATTRBIT(&attrbits); 7448 nfsrv_putattrbit(nd, &attrbits); 7449 /* Get the directory's post-op attributes. */ 7450 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7451 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7452 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7453 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7454 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7455 nfsrv_putattrbit(nd, &attrbits); 7456 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7457 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7458 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7459 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7460 layouttype, layoutlen, usecurstateid); 7461 error = nfscl_request(nd, dvp, p, cred, dstuff); 7462 if (error != 0) 7463 return (error); 7464 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7465 error); 7466 if (nd->nd_repstat != 0) 7467 *laystatp = nd->nd_repstat; 7468 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7469 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7470 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7471 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7472 6 * NFSX_UNSIGNED); 7473 stateid.seqid = *tl++; 7474 stateid.other[0] = *tl++; 7475 stateid.other[1] = *tl++; 7476 stateid.other[2] = *tl; 7477 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7478 if (error != 0) 7479 goto nfsmout; 7480 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7481 deleg = fxdr_unsigned(int, *tl); 7482 if (deleg == NFSV4OPEN_DELEGATEREAD || 7483 deleg == NFSV4OPEN_DELEGATEWRITE) { 7484 if (!(owp->nfsow_clp->nfsc_flags & 7485 NFSCLFLAGS_FIRSTDELEG)) 7486 owp->nfsow_clp->nfsc_flags |= 7487 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7488 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7489 M_NFSCLDELEG, M_WAITOK); 7490 LIST_INIT(&dp->nfsdl_owner); 7491 LIST_INIT(&dp->nfsdl_lock); 7492 dp->nfsdl_clp = owp->nfsow_clp; 7493 newnfs_copyincred(cred, &dp->nfsdl_cred); 7494 nfscl_lockinit(&dp->nfsdl_rwlock); 7495 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7496 NFSX_UNSIGNED); 7497 dp->nfsdl_stateid.seqid = *tl++; 7498 dp->nfsdl_stateid.other[0] = *tl++; 7499 dp->nfsdl_stateid.other[1] = *tl++; 7500 dp->nfsdl_stateid.other[2] = *tl++; 7501 ret = fxdr_unsigned(int, *tl); 7502 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7503 dp->nfsdl_flags = NFSCLDL_WRITE; 7504 /* 7505 * Indicates how much the file can grow. 7506 */ 7507 NFSM_DISSECT(tl, u_int32_t *, 7508 3 * NFSX_UNSIGNED); 7509 limitby = fxdr_unsigned(int, *tl++); 7510 switch (limitby) { 7511 case NFSV4OPEN_LIMITSIZE: 7512 dp->nfsdl_sizelimit = fxdr_hyper(tl); 7513 break; 7514 case NFSV4OPEN_LIMITBLOCKS: 7515 dp->nfsdl_sizelimit = 7516 fxdr_unsigned(u_int64_t, *tl++); 7517 dp->nfsdl_sizelimit *= 7518 fxdr_unsigned(u_int64_t, *tl); 7519 break; 7520 default: 7521 error = NFSERR_BADXDR; 7522 goto nfsmout; 7523 }; 7524 } else { 7525 dp->nfsdl_flags = NFSCLDL_READ; 7526 } 7527 if (ret != 0) 7528 dp->nfsdl_flags |= NFSCLDL_RECALL; 7529 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 7530 &acesize, p); 7531 if (error != 0) 7532 goto nfsmout; 7533 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7534 error = NFSERR_BADXDR; 7535 goto nfsmout; 7536 } 7537 7538 /* Now, we should have the status for the SaveFH. */ 7539 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7540 if (*++tl == 0) { 7541 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 7542 /* 7543 * Now, process the GetFH and Getattr for the newly 7544 * created file. nfscl_mtofh() will set 7545 * ND_NOMOREDATA if these weren't successful. 7546 */ 7547 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 7548 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 7549 if (error != 0) 7550 goto nfsmout; 7551 } else 7552 nd->nd_flag |= ND_NOMOREDATA; 7553 /* Now we have the PutFH and Getattr for the directory. */ 7554 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7555 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7556 if (*++tl != 0) 7557 nd->nd_flag |= ND_NOMOREDATA; 7558 else { 7559 NFSM_DISSECT(tl, uint32_t *, 2 * 7560 NFSX_UNSIGNED); 7561 if (*++tl != 0) 7562 nd->nd_flag |= ND_NOMOREDATA; 7563 } 7564 } 7565 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7566 /* Load the directory attributes. */ 7567 error = nfsm_loadattr(nd, dnap); 7568 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 7569 if (error != 0) 7570 goto nfsmout; 7571 *dattrflagp = 1; 7572 if (dp != NULL && *attrflagp != 0) { 7573 dp->nfsdl_change = nnap->na_filerev; 7574 dp->nfsdl_modtime = nnap->na_mtime; 7575 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7576 } 7577 /* 7578 * We can now complete the Open state. 7579 */ 7580 nfhp = *nfhpp; 7581 if (dp != NULL) { 7582 dp->nfsdl_fhlen = nfhp->nfh_len; 7583 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 7584 nfhp->nfh_len); 7585 } 7586 /* 7587 * Get an Open structure that will be 7588 * attached to the OpenOwner, acquired already. 7589 */ 7590 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 7591 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 7592 cred, p, NULL, &op, &newone, NULL, 0, false); 7593 if (error != 0) 7594 goto nfsmout; 7595 op->nfso_stateid = stateid; 7596 newnfs_copyincred(cred, &op->nfso_cred); 7597 7598 nfscl_openrelease(nmp, op, error, newone); 7599 *unlockedp = 1; 7600 7601 /* Now, handle the RestoreFH and LayoutGet. */ 7602 if (nd->nd_repstat == 0) { 7603 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 7604 *laystatp = fxdr_unsigned(int, *(tl + 3)); 7605 if (*laystatp == 0) { 7606 error = nfsrv_parselayoutget(nd, 7607 stateidp, retonclosep, flhp); 7608 if (error != 0) 7609 *laystatp = error; 7610 } 7611 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 7612 error); 7613 } else 7614 nd->nd_repstat = 0; 7615 } 7616 } 7617 if (nd->nd_repstat != 0 && error == 0) 7618 error = nd->nd_repstat; 7619 if (error == NFSERR_STALECLIENTID) 7620 nfscl_initiate_recovery(owp->nfsow_clp); 7621 nfsmout: 7622 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 7623 if (error == 0) 7624 *dpp = dp; 7625 else 7626 free(dp, M_NFSCLDELEG); 7627 mbuf_freem(nd->nd_mrep); 7628 return (error); 7629 } 7630 7631 /* 7632 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 7633 */ 7634 static int 7635 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7636 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7637 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7638 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7639 int *dattrflagp, void *dstuff, int *unlockedp) 7640 { 7641 struct nfscllayout *lyp; 7642 struct nfsclflayouthead flh; 7643 struct nfsfh *nfhp; 7644 struct nfsclsession *tsep; 7645 struct nfsmount *nmp; 7646 nfsv4stateid_t stateid; 7647 int error, layoutlen, layouttype, retonclose, laystat; 7648 7649 error = 0; 7650 nmp = VFSTONFS(dvp->v_mount); 7651 if (NFSHASFLEXFILE(nmp)) 7652 layouttype = NFSLAYOUT_FLEXFILE; 7653 else 7654 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7655 LIST_INIT(&flh); 7656 tsep = nfsmnt_mdssession(nmp); 7657 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 7658 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 7659 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 7660 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 7661 &flh, &laystat); 7662 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 7663 laystat, error); 7664 lyp = NULL; 7665 if (laystat == 0) { 7666 nfhp = *nfhpp; 7667 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 7668 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 7669 layouttype, laystat, NULL, cred, p); 7670 } else 7671 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 7672 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 7673 cred, p); 7674 if (laystat == 0) 7675 nfscl_rellayout(lyp, 0); 7676 return (error); 7677 } 7678 7679 /* 7680 * Process the results of a layoutget() operation. 7681 */ 7682 static int 7683 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 7684 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 7685 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 7686 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 7687 { 7688 struct nfsclflayout *tflp; 7689 struct nfscldevinfo *dip; 7690 uint8_t *dev; 7691 int i, mirrorcnt; 7692 7693 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 7694 NFSLOCKMNT(nmp); 7695 if (!NFSHASFLEXFILE(nmp)) { 7696 /* Switch to using Flex File Layout. */ 7697 nmp->nm_state |= NFSSTA_FLEXFILE; 7698 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 7699 /* Disable pNFS. */ 7700 NFSCL_DEBUG(1, "disable PNFS\n"); 7701 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 7702 } 7703 NFSUNLOCKMNT(nmp); 7704 } 7705 if (laystat == 0) { 7706 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 7707 LIST_FOREACH(tflp, flhp, nfsfl_list) { 7708 if (layouttype == NFSLAYOUT_FLEXFILE) 7709 mirrorcnt = tflp->nfsfl_mirrorcnt; 7710 else 7711 mirrorcnt = 1; 7712 for (i = 0; i < mirrorcnt; i++) { 7713 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp); 7714 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 7715 if (laystat != 0) { 7716 if (layouttype == NFSLAYOUT_FLEXFILE) 7717 dev = tflp->nfsfl_ffm[i].dev; 7718 else 7719 dev = tflp->nfsfl_dev; 7720 laystat = nfsrpc_getdeviceinfo(nmp, dev, 7721 layouttype, notifybit, &dip, cred, 7722 p); 7723 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 7724 laystat); 7725 if (laystat != 0) 7726 goto out; 7727 laystat = nfscl_adddevinfo(nmp, dip, i, 7728 tflp); 7729 if (laystat != 0) 7730 printf("nfsrpc_layoutgetresout" 7731 ": cannot add\n"); 7732 } 7733 } 7734 } 7735 } 7736 out: 7737 if (laystat == 0) { 7738 /* 7739 * nfscl_layout() always returns with the nfsly_lock 7740 * set to a refcnt (shared lock). 7741 * Passing in dvp is sufficient, since it is only used to 7742 * get the fsid for the file system. 7743 */ 7744 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 7745 layouttype, retonclose, flhp, lypp, cred, p); 7746 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 7747 laystat); 7748 if (laystat == 0 && islockedp != NULL) 7749 *islockedp = 1; 7750 } 7751 return (laystat); 7752 } 7753 7754 /* 7755 * Do the NFSv4.1 Bind Connection to Session. 7756 * Called from the reconnect layer of the krpc (sys/rpc/clnt_rc.c). 7757 */ 7758 void 7759 nfsrpc_bindconnsess(CLIENT *cl, void *arg, struct ucred *cr) 7760 { 7761 struct nfscl_reconarg *rcp = (struct nfscl_reconarg *)arg; 7762 uint32_t res, *tl; 7763 struct nfsrv_descript nfsd; 7764 struct nfsrv_descript *nd = &nfsd; 7765 struct rpc_callextra ext; 7766 struct timeval utimeout; 7767 enum clnt_stat stat; 7768 int error; 7769 7770 nfscl_reqstart(nd, NFSPROC_BINDCONNTOSESS, NULL, NULL, 0, NULL, NULL, 7771 NFS_VER4, rcp->minorvers); 7772 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID + 2 * NFSX_UNSIGNED); 7773 memcpy(tl, rcp->sessionid, NFSX_V4SESSIONID); 7774 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 7775 *tl++ = txdr_unsigned(NFSCDFC4_FORE_OR_BOTH); 7776 *tl = newnfs_false; 7777 7778 memset(&ext, 0, sizeof(ext)); 7779 utimeout.tv_sec = 30; 7780 utimeout.tv_usec = 0; 7781 ext.rc_auth = authunix_create(cr); 7782 nd->nd_mrep = NULL; 7783 stat = CLNT_CALL_MBUF(cl, &ext, NFSV4PROC_COMPOUND, nd->nd_mreq, 7784 &nd->nd_mrep, utimeout); 7785 AUTH_DESTROY(ext.rc_auth); 7786 if (stat != RPC_SUCCESS) { 7787 printf("nfsrpc_bindconnsess: call failed stat=%d\n", stat); 7788 return; 7789 } 7790 if (nd->nd_mrep == NULL) { 7791 printf("nfsrpc_bindconnsess: no reply args\n"); 7792 return; 7793 } 7794 error = 0; 7795 newnfs_realign(&nd->nd_mrep, M_WAITOK); 7796 nd->nd_md = nd->nd_mrep; 7797 nd->nd_dpos = mtod(nd->nd_md, char *); 7798 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7799 nd->nd_repstat = fxdr_unsigned(uint32_t, *tl++); 7800 if (nd->nd_repstat == NFSERR_OK) { 7801 res = fxdr_unsigned(uint32_t, *tl); 7802 if (res > 0 && (error = nfsm_advance(nd, NFSM_RNDUP(res), 7803 -1)) != 0) 7804 goto nfsmout; 7805 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 7806 4 * NFSX_UNSIGNED); 7807 tl += 3; 7808 if (!NFSBCMP(tl, rcp->sessionid, NFSX_V4SESSIONID)) { 7809 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 7810 res = fxdr_unsigned(uint32_t, *tl); 7811 if (res != NFSCDFS4_BOTH) 7812 printf("nfsrpc_bindconnsess: did not " 7813 "return FS4_BOTH\n"); 7814 } else 7815 printf("nfsrpc_bindconnsess: not same " 7816 "sessionid\n"); 7817 } else if (nd->nd_repstat != NFSERR_BADSESSION) 7818 printf("nfsrpc_bindconnsess: returned %d\n", nd->nd_repstat); 7819 nfsmout: 7820 if (error != 0) 7821 printf("nfsrpc_bindconnsess: reply bad xdr\n"); 7822 m_freem(nd->nd_mrep); 7823 }
Cache object: e3c7dedd7afacc14c8d0da99aeaf17d4
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