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 #include <sys/capsicum.h> 40 #include <sys/extattr.h> 41 42 /* 43 * Functions that perform the vfs operations required by the routines in 44 * nfsd_serv.c. It is hoped that this change will make the server more 45 * portable. 46 */ 47 48 #include <fs/nfs/nfsport.h> 49 #include <security/mac/mac_framework.h> 50 #include <sys/callout.h> 51 #include <sys/filio.h> 52 #include <sys/hash.h> 53 #include <sys/osd.h> 54 #include <sys/sysctl.h> 55 #include <nlm/nlm_prot.h> 56 #include <nlm/nlm.h> 57 58 FEATURE(nfsd, "NFSv4 server"); 59 60 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 61 extern int nfsrv_useacl; 62 extern int newnfs_numnfsd; 63 extern int nfsrv_sessionhashsize; 64 extern struct nfslayouthash *nfslayouthash; 65 extern int nfsrv_layouthashsize; 66 extern struct mtx nfsrv_dslock_mtx; 67 extern int nfs_pnfsiothreads; 68 extern volatile int nfsrv_devidcnt; 69 extern int nfsrv_maxpnfsmirror; 70 extern uint32_t nfs_srvmaxio; 71 extern int nfs_bufpackets; 72 extern u_long sb_max_adj; 73 74 NFSD_VNET_DECLARE(int, nfsrv_numnfsd); 75 NFSD_VNET_DECLARE(struct nfsrv_stablefirst, nfsrv_stablefirst); 76 NFSD_VNET_DECLARE(SVCPOOL *, nfsrvd_pool); 77 NFSD_VNET_DECLARE(struct nfsclienthashhead *, nfsclienthash); 78 NFSD_VNET_DECLARE(struct nfslockhashhead *, nfslockhash); 79 NFSD_VNET_DECLARE(struct nfssessionhash *, nfssessionhash); 80 NFSD_VNET_DECLARE(struct nfsv4lock, nfsd_suspend_lock); 81 NFSD_VNET_DECLARE(struct nfsstatsv1 *, nfsstatsv1_p); 82 83 NFSDLOCKMUTEX; 84 NFSSTATESPINLOCK; 85 struct mtx nfsrc_udpmtx; 86 struct mtx nfs_v4root_mutex; 87 struct mtx nfsrv_dontlistlock_mtx; 88 struct mtx nfsrv_recalllock_mtx; 89 struct nfsrvfh nfs_pubfh; 90 int nfs_pubfhset = 0; 91 int nfsd_debuglevel = 0; 92 static pid_t nfsd_master_pid = (pid_t)-1; 93 static char nfsd_master_comm[MAXCOMLEN + 1]; 94 static struct timeval nfsd_master_start; 95 static uint32_t nfsv4_sysid = 0; 96 static fhandle_t zerofh; 97 98 NFSD_VNET_DEFINE(struct proc *, nfsd_master_proc) = NULL; 99 NFSD_VNET_DEFINE(struct nfsrvhashhead *, nfsrvudphashtbl); 100 NFSD_VNET_DEFINE(struct nfsrchash_bucket *, nfsrchash_table); 101 NFSD_VNET_DEFINE(struct nfsrchash_bucket *, nfsrcahash_table); 102 NFSD_VNET_DEFINE(struct nfsrvfh, nfs_rootfh); 103 NFSD_VNET_DEFINE(int, nfs_rootfhset) = 0; 104 NFSD_VNET_DEFINE(struct callout, nfsd_callout); 105 NFSD_VNET_DEFINE_STATIC(struct mount *, nfsv4root_mnt); 106 NFSD_VNET_DEFINE_STATIC(struct vfsoptlist, nfsv4root_opt); 107 NFSD_VNET_DEFINE_STATIC(struct vfsoptlist, nfsv4root_newopt); 108 NFSD_VNET_DEFINE_STATIC(bool, nfsrv_suspend_nfsd) = false; 109 NFSD_VNET_DEFINE_STATIC(bool, nfsrv_mntinited) = false; 110 111 static int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 112 struct ucred *); 113 static void nfsvno_updateds(struct vnode *, struct ucred *, struct thread *); 114 115 int nfsrv_enable_crossmntpt = 1; 116 static int nfs_commit_blks; 117 static int nfs_commit_miss; 118 extern int nfsrv_issuedelegs; 119 extern int nfsrv_dolocallocks; 120 extern struct nfsdevicehead nfsrv_devidhead; 121 122 static int nfsrv_createiovec(int, struct mbuf **, struct mbuf **, 123 struct iovec **); 124 static int nfsrv_createiovec_extpgs(int, int, struct mbuf **, 125 struct mbuf **, struct iovec **); 126 static int nfsrv_createiovecw(int, struct mbuf *, char *, struct iovec **, 127 int *); 128 static void nfsrv_pnfscreate(struct vnode *, struct vattr *, struct ucred *, 129 NFSPROC_T *); 130 static void nfsrv_pnfsremovesetup(struct vnode *, NFSPROC_T *, struct vnode **, 131 int *, char *, fhandle_t *); 132 static void nfsrv_pnfsremove(struct vnode **, int, char *, fhandle_t *, 133 NFSPROC_T *); 134 static int nfsrv_proxyds(struct vnode *, off_t, int, struct ucred *, 135 struct thread *, int, struct mbuf **, char *, struct mbuf **, 136 struct nfsvattr *, struct acl *, off_t *, int, bool *); 137 static int nfsrv_setextattr(struct vnode *, struct nfsvattr *, NFSPROC_T *); 138 static int nfsrv_readdsrpc(fhandle_t *, off_t, int, struct ucred *, 139 NFSPROC_T *, struct nfsmount *, struct mbuf **, struct mbuf **); 140 static int nfsrv_writedsrpc(fhandle_t *, off_t, int, struct ucred *, 141 NFSPROC_T *, struct vnode *, struct nfsmount **, int, struct mbuf **, 142 char *, int *); 143 static int nfsrv_allocatedsrpc(fhandle_t *, off_t, off_t, struct ucred *, 144 NFSPROC_T *, struct vnode *, struct nfsmount **, int, int *); 145 static int nfsrv_deallocatedsrpc(fhandle_t *, off_t, off_t, struct ucred *, 146 NFSPROC_T *, struct vnode *, struct nfsmount **, int, int *); 147 static int nfsrv_setacldsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 148 struct vnode *, struct nfsmount **, int, struct acl *, int *); 149 static int nfsrv_setattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 150 struct vnode *, struct nfsmount **, int, struct nfsvattr *, int *); 151 static int nfsrv_getattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 152 struct vnode *, struct nfsmount *, struct nfsvattr *); 153 static int nfsrv_seekdsrpc(fhandle_t *, off_t *, int, bool *, struct ucred *, 154 NFSPROC_T *, struct nfsmount *); 155 static int nfsrv_putfhname(fhandle_t *, char *); 156 static int nfsrv_pnfslookupds(struct vnode *, struct vnode *, 157 struct pnfsdsfile *, struct vnode **, NFSPROC_T *); 158 static void nfsrv_pnfssetfh(struct vnode *, struct pnfsdsfile *, char *, char *, 159 struct vnode *, NFSPROC_T *); 160 static int nfsrv_dsremove(struct vnode *, char *, struct ucred *, NFSPROC_T *); 161 static int nfsrv_dssetacl(struct vnode *, struct acl *, struct ucred *, 162 NFSPROC_T *); 163 static int nfsrv_pnfsstatfs(struct statfs *, struct mount *); 164 165 int nfs_pnfsio(task_fn_t *, void *); 166 167 SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 168 "NFS server"); 169 SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 170 &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 171 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 172 0, ""); 173 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 174 0, ""); 175 SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 176 &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 177 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 178 &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 179 SYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel, 180 0, "Debug level for NFS server"); 181 NFSD_VNET_DECLARE(int, nfsd_enable_stringtouid); 182 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, 183 CTLFLAG_NFSD_VNET | CTLFLAG_RW, &NFSD_VNET_NAME(nfsd_enable_stringtouid), 184 0, "Enable nfsd to accept numeric owner_names"); 185 static int nfsrv_pnfsgetdsattr = 1; 186 SYSCTL_INT(_vfs_nfsd, OID_AUTO, pnfsgetdsattr, CTLFLAG_RW, 187 &nfsrv_pnfsgetdsattr, 0, "When set getattr gets DS attributes via RPC"); 188 189 /* 190 * nfsrv_dsdirsize can only be increased and only when the nfsd threads are 191 * not running. 192 * The dsN subdirectories for the increased values must have been created 193 * on all DS servers before this increase is done. 194 */ 195 u_int nfsrv_dsdirsize = 20; 196 static int 197 sysctl_dsdirsize(SYSCTL_HANDLER_ARGS) 198 { 199 int error, newdsdirsize; 200 201 newdsdirsize = nfsrv_dsdirsize; 202 error = sysctl_handle_int(oidp, &newdsdirsize, 0, req); 203 if (error != 0 || req->newptr == NULL) 204 return (error); 205 if (newdsdirsize <= nfsrv_dsdirsize || newdsdirsize > 10000 || 206 newnfs_numnfsd != 0) 207 return (EINVAL); 208 nfsrv_dsdirsize = newdsdirsize; 209 return (0); 210 } 211 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, dsdirsize, 212 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, 0, sizeof(nfsrv_dsdirsize), 213 sysctl_dsdirsize, "IU", "Number of dsN subdirs on the DS servers"); 214 215 /* 216 * nfs_srvmaxio can only be increased and only when the nfsd threads are 217 * not running. The setting must be a power of 2, with the current limit of 218 * 1Mbyte. 219 */ 220 static int 221 sysctl_srvmaxio(SYSCTL_HANDLER_ARGS) 222 { 223 int error; 224 u_int newsrvmaxio; 225 uint64_t tval; 226 227 newsrvmaxio = nfs_srvmaxio; 228 error = sysctl_handle_int(oidp, &newsrvmaxio, 0, req); 229 if (error != 0 || req->newptr == NULL) 230 return (error); 231 if (newsrvmaxio == nfs_srvmaxio) 232 return (0); 233 if (newsrvmaxio < nfs_srvmaxio) { 234 printf("nfsd: vfs.nfsd.srvmaxio can only be increased\n"); 235 return (EINVAL); 236 } 237 if (newsrvmaxio > 1048576) { 238 printf("nfsd: vfs.nfsd.srvmaxio cannot be > 1Mbyte\n"); 239 return (EINVAL); 240 } 241 if ((newsrvmaxio & (newsrvmaxio - 1)) != 0) { 242 printf("nfsd: vfs.nfsd.srvmaxio must be a power of 2\n"); 243 return (EINVAL); 244 } 245 246 /* 247 * Check that kern.ipc.maxsockbuf is large enough for 248 * newsrviomax, given the setting of vfs.nfs.bufpackets. 249 */ 250 if ((newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets > 251 sb_max_adj) { 252 /* 253 * Suggest vfs.nfs.bufpackets * maximum RPC message for 254 * sb_max_adj. 255 */ 256 tval = (newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets; 257 258 /* 259 * Convert suggested sb_max_adj value to a suggested 260 * sb_max value, which is what is set via kern.ipc.maxsockbuf. 261 * Perform the inverse calculation of (from uipc_sockbuf.c): 262 * sb_max_adj = (u_quad_t)sb_max * MCLBYTES / 263 * (MSIZE + MCLBYTES); 264 * XXX If the calculation of sb_max_adj from sb_max changes, 265 * this calculation must be changed as well. 266 */ 267 tval *= (MSIZE + MCLBYTES); /* Brackets for readability. */ 268 tval += MCLBYTES - 1; /* Round up divide. */ 269 tval /= MCLBYTES; 270 printf("nfsd: set kern.ipc.maxsockbuf to a minimum of " 271 "%ju to support %ubyte NFS I/O\n", (uintmax_t)tval, 272 newsrvmaxio); 273 return (EINVAL); 274 } 275 276 NFSD_LOCK(); 277 if (newnfs_numnfsd != 0) { 278 NFSD_UNLOCK(); 279 printf("nfsd: cannot set vfs.nfsd.srvmaxio when nfsd " 280 "threads are running\n"); 281 return (EINVAL); 282 } 283 284 285 nfs_srvmaxio = newsrvmaxio; 286 NFSD_UNLOCK(); 287 return (0); 288 } 289 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, srvmaxio, 290 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, NULL, 0, 291 sysctl_srvmaxio, "IU", "Maximum I/O size in bytes"); 292 293 #define MAX_REORDERED_RPC 16 294 #define NUM_HEURISTIC 1031 295 #define NHUSE_INIT 64 296 #define NHUSE_INC 16 297 #define NHUSE_MAX 2048 298 299 static struct nfsheur { 300 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 301 off_t nh_nextoff; /* next offset for sequential detection */ 302 int nh_use; /* use count for selection */ 303 int nh_seqcount; /* heuristic */ 304 } nfsheur[NUM_HEURISTIC]; 305 306 /* 307 * Heuristic to detect sequential operation. 308 */ 309 static struct nfsheur * 310 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 311 { 312 struct nfsheur *nh; 313 int hi, try; 314 315 /* Locate best candidate. */ 316 try = 32; 317 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 318 nh = &nfsheur[hi]; 319 while (try--) { 320 if (nfsheur[hi].nh_vp == vp) { 321 nh = &nfsheur[hi]; 322 break; 323 } 324 if (nfsheur[hi].nh_use > 0) 325 --nfsheur[hi].nh_use; 326 hi = (hi + 1) % NUM_HEURISTIC; 327 if (nfsheur[hi].nh_use < nh->nh_use) 328 nh = &nfsheur[hi]; 329 } 330 331 /* Initialize hint if this is a new file. */ 332 if (nh->nh_vp != vp) { 333 nh->nh_vp = vp; 334 nh->nh_nextoff = uio->uio_offset; 335 nh->nh_use = NHUSE_INIT; 336 if (uio->uio_offset == 0) 337 nh->nh_seqcount = 4; 338 else 339 nh->nh_seqcount = 1; 340 } 341 342 /* Calculate heuristic. */ 343 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 344 uio->uio_offset == nh->nh_nextoff) { 345 /* See comments in vfs_vnops.c:sequential_heuristic(). */ 346 nh->nh_seqcount += howmany(uio->uio_resid, 16384); 347 if (nh->nh_seqcount > IO_SEQMAX) 348 nh->nh_seqcount = IO_SEQMAX; 349 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 350 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 351 /* Probably a reordered RPC, leave seqcount alone. */ 352 } else if (nh->nh_seqcount > 1) { 353 nh->nh_seqcount /= 2; 354 } else { 355 nh->nh_seqcount = 0; 356 } 357 nh->nh_use += NHUSE_INC; 358 if (nh->nh_use > NHUSE_MAX) 359 nh->nh_use = NHUSE_MAX; 360 return (nh); 361 } 362 363 /* 364 * Get attributes into nfsvattr structure. 365 */ 366 int 367 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, 368 struct nfsrv_descript *nd, struct thread *p, int vpislocked, 369 nfsattrbit_t *attrbitp) 370 { 371 int error, gotattr, lockedit = 0; 372 struct nfsvattr na; 373 374 if (vpislocked == 0) { 375 /* 376 * When vpislocked == 0, the vnode is either exclusively 377 * locked by this thread or not locked by this thread. 378 * As such, shared lock it, if not exclusively locked. 379 */ 380 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 381 lockedit = 1; 382 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 383 } 384 } 385 386 /* 387 * Acquire the Change, Size, TimeAccess, TimeModify and SpaceUsed 388 * attributes, as required. 389 * This needs to be done for regular files if: 390 * - non-NFSv4 RPCs or 391 * - when attrbitp == NULL or 392 * - an NFSv4 RPC with any of the above attributes in attrbitp. 393 * A return of 0 for nfsrv_proxyds() indicates that it has acquired 394 * these attributes. nfsrv_proxyds() will return an error if the 395 * server is not a pNFS one. 396 */ 397 gotattr = 0; 398 if (vp->v_type == VREG && nfsrv_devidcnt > 0 && (attrbitp == NULL || 399 (nd->nd_flag & ND_NFSV4) == 0 || 400 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_CHANGE) || 401 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) || 402 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESS) || 403 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFY) || 404 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEUSED))) { 405 error = nfsrv_proxyds(vp, 0, 0, nd->nd_cred, p, 406 NFSPROC_GETATTR, NULL, NULL, NULL, &na, NULL, NULL, 0, 407 NULL); 408 if (error == 0) 409 gotattr = 1; 410 } 411 412 error = VOP_GETATTR(vp, &nvap->na_vattr, nd->nd_cred); 413 if (lockedit != 0) 414 NFSVOPUNLOCK(vp); 415 416 /* 417 * If we got the Change, Size and Modify Time from the DS, 418 * replace them. 419 */ 420 if (gotattr != 0) { 421 nvap->na_atime = na.na_atime; 422 nvap->na_mtime = na.na_mtime; 423 nvap->na_filerev = na.na_filerev; 424 nvap->na_size = na.na_size; 425 nvap->na_bytes = na.na_bytes; 426 } 427 NFSD_DEBUG(4, "nfsvno_getattr: gotattr=%d err=%d chg=%ju\n", gotattr, 428 error, (uintmax_t)na.na_filerev); 429 430 NFSEXITCODE(error); 431 return (error); 432 } 433 434 /* 435 * Get a file handle for a vnode. 436 */ 437 int 438 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 439 { 440 int error; 441 442 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 443 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 444 error = VOP_VPTOFH(vp, &fhp->fh_fid); 445 446 NFSEXITCODE(error); 447 return (error); 448 } 449 450 /* 451 * Perform access checking for vnodes obtained from file handles that would 452 * refer to files already opened by a Unix client. You cannot just use 453 * vn_writechk() and VOP_ACCESSX() for two reasons. 454 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 455 * case. 456 * 2 - The owner is to be given access irrespective of mode bits for some 457 * operations, so that processes that chmod after opening a file don't 458 * break. 459 */ 460 int 461 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 462 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 463 u_int32_t *supportedtypep) 464 { 465 struct vattr vattr; 466 int error = 0, getret = 0; 467 468 if (vpislocked == 0) { 469 if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 470 error = EPERM; 471 goto out; 472 } 473 } 474 if (accmode & VWRITE) { 475 /* Just vn_writechk() changed to check rdonly */ 476 /* 477 * Disallow write attempts on read-only file systems; 478 * unless the file is a socket or a block or character 479 * device resident on the file system. 480 */ 481 if (NFSVNO_EXRDONLY(exp) || 482 (vp->v_mount->mnt_flag & MNT_RDONLY)) { 483 switch (vp->v_type) { 484 case VREG: 485 case VDIR: 486 case VLNK: 487 error = EROFS; 488 default: 489 break; 490 } 491 } 492 /* 493 * If there's shared text associated with 494 * the inode, try to free it up once. If 495 * we fail, we can't allow writing. 496 */ 497 if (VOP_IS_TEXT(vp) && error == 0) 498 error = ETXTBSY; 499 } 500 if (error != 0) { 501 if (vpislocked == 0) 502 NFSVOPUNLOCK(vp); 503 goto out; 504 } 505 506 /* 507 * Should the override still be applied when ACLs are enabled? 508 */ 509 error = VOP_ACCESSX(vp, accmode, cred, p); 510 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 511 /* 512 * Try again with VEXPLICIT_DENY, to see if the test for 513 * deletion is supported. 514 */ 515 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 516 if (error == 0) { 517 if (vp->v_type == VDIR) { 518 accmode &= ~(VDELETE | VDELETE_CHILD); 519 accmode |= VWRITE; 520 error = VOP_ACCESSX(vp, accmode, cred, p); 521 } else if (supportedtypep != NULL) { 522 *supportedtypep &= ~NFSACCESS_DELETE; 523 } 524 } 525 } 526 527 /* 528 * Allow certain operations for the owner (reads and writes 529 * on files that are already open). 530 */ 531 if (override != NFSACCCHK_NOOVERRIDE && 532 (error == EPERM || error == EACCES)) { 533 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 534 error = 0; 535 else if (override & NFSACCCHK_ALLOWOWNER) { 536 getret = VOP_GETATTR(vp, &vattr, cred); 537 if (getret == 0 && cred->cr_uid == vattr.va_uid) 538 error = 0; 539 } 540 } 541 if (vpislocked == 0) 542 NFSVOPUNLOCK(vp); 543 544 out: 545 NFSEXITCODE(error); 546 return (error); 547 } 548 549 /* 550 * Set attribute(s) vnop. 551 */ 552 int 553 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 554 struct thread *p, struct nfsexstuff *exp) 555 { 556 u_quad_t savsize = 0; 557 int error, savedit; 558 time_t savbtime; 559 560 /* 561 * If this is an exported file system and a pNFS service is running, 562 * don't VOP_SETATTR() of size for the MDS file system. 563 */ 564 savedit = 0; 565 error = 0; 566 if (vp->v_type == VREG && (vp->v_mount->mnt_flag & MNT_EXPORTED) != 0 && 567 nfsrv_devidcnt != 0 && nvap->na_vattr.va_size != VNOVAL && 568 nvap->na_vattr.va_size > 0) { 569 savsize = nvap->na_vattr.va_size; 570 nvap->na_vattr.va_size = VNOVAL; 571 if (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 572 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 573 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 574 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 575 nvap->na_vattr.va_mtime.tv_sec != VNOVAL) 576 savedit = 1; 577 else 578 savedit = 2; 579 } 580 if (savedit != 2) 581 error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 582 if (savedit != 0) 583 nvap->na_vattr.va_size = savsize; 584 if (error == 0 && (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 585 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 586 nvap->na_vattr.va_size != VNOVAL || 587 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 588 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 589 nvap->na_vattr.va_mtime.tv_sec != VNOVAL)) { 590 /* Never modify birthtime on a DS file. */ 591 savbtime = nvap->na_vattr.va_birthtime.tv_sec; 592 nvap->na_vattr.va_birthtime.tv_sec = VNOVAL; 593 /* For a pNFS server, set the attributes on the DS file. */ 594 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETATTR, 595 NULL, NULL, NULL, nvap, NULL, NULL, 0, NULL); 596 nvap->na_vattr.va_birthtime.tv_sec = savbtime; 597 if (error == ENOENT) 598 error = 0; 599 } 600 NFSEXITCODE(error); 601 return (error); 602 } 603 604 /* 605 * Set up nameidata for a lookup() call and do it. 606 */ 607 int 608 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 609 struct vnode *dp, int islocked, struct nfsexstuff *exp, 610 struct vnode **retdirp) 611 { 612 struct componentname *cnp = &ndp->ni_cnd; 613 int i; 614 struct iovec aiov; 615 struct uio auio; 616 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 617 int error = 0; 618 char *cp; 619 620 *retdirp = NULL; 621 cnp->cn_nameptr = cnp->cn_pnbuf; 622 ndp->ni_lcf = 0; 623 /* 624 * Extract and set starting directory. 625 */ 626 if (dp->v_type != VDIR) { 627 if (islocked) 628 vput(dp); 629 else 630 vrele(dp); 631 nfsvno_relpathbuf(ndp); 632 error = ENOTDIR; 633 goto out1; 634 } 635 if (islocked) 636 NFSVOPUNLOCK(dp); 637 VREF(dp); 638 *retdirp = dp; 639 if (NFSVNO_EXRDONLY(exp)) 640 cnp->cn_flags |= RDONLY; 641 ndp->ni_segflg = UIO_SYSSPACE; 642 643 if (nd->nd_flag & ND_PUBLOOKUP) { 644 ndp->ni_loopcnt = 0; 645 if (cnp->cn_pnbuf[0] == '/') { 646 vrele(dp); 647 /* 648 * Check for degenerate pathnames here, since lookup() 649 * panics on them. 650 */ 651 for (i = 1; i < ndp->ni_pathlen; i++) 652 if (cnp->cn_pnbuf[i] != '/') 653 break; 654 if (i == ndp->ni_pathlen) { 655 error = NFSERR_ACCES; 656 goto out; 657 } 658 dp = rootvnode; 659 VREF(dp); 660 } 661 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 662 (nd->nd_flag & ND_NFSV4) == 0) { 663 /* 664 * Only cross mount points for NFSv4 when doing a 665 * mount while traversing the file system above 666 * the mount point, unless nfsrv_enable_crossmntpt is set. 667 */ 668 cnp->cn_flags |= NOCROSSMOUNT; 669 } 670 671 /* 672 * Initialize for scan, set ni_startdir and bump ref on dp again 673 * because lookup() will dereference ni_startdir. 674 */ 675 676 ndp->ni_startdir = dp; 677 ndp->ni_rootdir = rootvnode; 678 ndp->ni_topdir = NULL; 679 680 if (!lockleaf) 681 cnp->cn_flags |= LOCKLEAF; 682 for (;;) { 683 cnp->cn_nameptr = cnp->cn_pnbuf; 684 /* 685 * Call lookup() to do the real work. If an error occurs, 686 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 687 * we do not have to dereference anything before returning. 688 * In either case ni_startdir will be dereferenced and NULLed 689 * out. 690 */ 691 error = vfs_lookup(ndp); 692 if (error) 693 break; 694 695 /* 696 * Check for encountering a symbolic link. Trivial 697 * termination occurs if no symlink encountered. 698 */ 699 if ((cnp->cn_flags & ISSYMLINK) == 0) { 700 if (ndp->ni_vp && !lockleaf) 701 NFSVOPUNLOCK(ndp->ni_vp); 702 break; 703 } 704 705 /* 706 * Validate symlink 707 */ 708 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 709 NFSVOPUNLOCK(ndp->ni_dvp); 710 if (!(nd->nd_flag & ND_PUBLOOKUP)) { 711 error = EINVAL; 712 goto badlink2; 713 } 714 715 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 716 error = ELOOP; 717 goto badlink2; 718 } 719 if (ndp->ni_pathlen > 1) 720 cp = uma_zalloc(namei_zone, M_WAITOK); 721 else 722 cp = cnp->cn_pnbuf; 723 aiov.iov_base = cp; 724 aiov.iov_len = MAXPATHLEN; 725 auio.uio_iov = &aiov; 726 auio.uio_iovcnt = 1; 727 auio.uio_offset = 0; 728 auio.uio_rw = UIO_READ; 729 auio.uio_segflg = UIO_SYSSPACE; 730 auio.uio_td = NULL; 731 auio.uio_resid = MAXPATHLEN; 732 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 733 if (error) { 734 badlink1: 735 if (ndp->ni_pathlen > 1) 736 uma_zfree(namei_zone, cp); 737 badlink2: 738 vrele(ndp->ni_dvp); 739 vput(ndp->ni_vp); 740 break; 741 } 742 linklen = MAXPATHLEN - auio.uio_resid; 743 if (linklen == 0) { 744 error = ENOENT; 745 goto badlink1; 746 } 747 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 748 error = ENAMETOOLONG; 749 goto badlink1; 750 } 751 752 /* 753 * Adjust or replace path 754 */ 755 if (ndp->ni_pathlen > 1) { 756 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 757 uma_zfree(namei_zone, cnp->cn_pnbuf); 758 cnp->cn_pnbuf = cp; 759 } else 760 cnp->cn_pnbuf[linklen] = '\0'; 761 ndp->ni_pathlen += linklen; 762 763 /* 764 * Cleanup refs for next loop and check if root directory 765 * should replace current directory. Normally ni_dvp 766 * becomes the new base directory and is cleaned up when 767 * we loop. Explicitly null pointers after invalidation 768 * to clarify operation. 769 */ 770 vput(ndp->ni_vp); 771 ndp->ni_vp = NULL; 772 773 if (cnp->cn_pnbuf[0] == '/') { 774 vrele(ndp->ni_dvp); 775 ndp->ni_dvp = ndp->ni_rootdir; 776 VREF(ndp->ni_dvp); 777 } 778 ndp->ni_startdir = ndp->ni_dvp; 779 ndp->ni_dvp = NULL; 780 } 781 if (!lockleaf) 782 cnp->cn_flags &= ~LOCKLEAF; 783 784 out: 785 if (error) { 786 nfsvno_relpathbuf(ndp); 787 ndp->ni_vp = NULL; 788 ndp->ni_dvp = NULL; 789 ndp->ni_startdir = NULL; 790 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 791 ndp->ni_dvp = NULL; 792 } 793 794 out1: 795 NFSEXITCODE2(error, nd); 796 return (error); 797 } 798 799 /* 800 * Set up a pathname buffer and return a pointer to it and, optionally 801 * set a hash pointer. 802 */ 803 void 804 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 805 { 806 struct componentname *cnp = &ndp->ni_cnd; 807 808 cnp->cn_flags |= (NOMACCHECK); 809 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 810 if (hashpp != NULL) 811 *hashpp = NULL; 812 *bufpp = cnp->cn_pnbuf; 813 } 814 815 /* 816 * Release the above path buffer, if not released by nfsvno_namei(). 817 */ 818 void 819 nfsvno_relpathbuf(struct nameidata *ndp) 820 { 821 822 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 823 ndp->ni_cnd.cn_pnbuf = NULL; 824 } 825 826 /* 827 * Readlink vnode op into an mbuf list. 828 */ 829 int 830 nfsvno_readlink(struct vnode *vp, struct ucred *cred, int maxextsiz, 831 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 832 { 833 struct iovec *iv; 834 struct uio io, *uiop = &io; 835 struct mbuf *mp, *mp3; 836 int len, tlen, error = 0; 837 838 len = NFS_MAXPATHLEN; 839 if (maxextsiz > 0) 840 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 841 &mp3, &mp, &iv); 842 else 843 uiop->uio_iovcnt = nfsrv_createiovec(len, &mp3, &mp, &iv); 844 uiop->uio_iov = iv; 845 uiop->uio_offset = 0; 846 uiop->uio_resid = len; 847 uiop->uio_rw = UIO_READ; 848 uiop->uio_segflg = UIO_SYSSPACE; 849 uiop->uio_td = NULL; 850 error = VOP_READLINK(vp, uiop, cred); 851 free(iv, M_TEMP); 852 if (error) { 853 m_freem(mp3); 854 *lenp = 0; 855 goto out; 856 } 857 if (uiop->uio_resid > 0) { 858 len -= uiop->uio_resid; 859 tlen = NFSM_RNDUP(len); 860 if (tlen == 0) { 861 m_freem(mp3); 862 mp3 = mp = NULL; 863 } else if (tlen != NFS_MAXPATHLEN || tlen != len) 864 mp = nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, 865 tlen - len); 866 } 867 *lenp = len; 868 *mpp = mp3; 869 *mpendp = mp; 870 871 out: 872 NFSEXITCODE(error); 873 return (error); 874 } 875 876 /* 877 * Create an mbuf chain and an associated iovec that can be used to Read 878 * or Getextattr of data. 879 * Upon success, return pointers to the first and last mbufs in the chain 880 * plus the malloc'd iovec and its iovlen. 881 */ 882 static int 883 nfsrv_createiovec(int len, struct mbuf **mpp, struct mbuf **mpendp, 884 struct iovec **ivp) 885 { 886 struct mbuf *m, *m2 = NULL, *m3; 887 struct iovec *iv; 888 int i, left, siz; 889 890 left = len; 891 m3 = NULL; 892 /* 893 * Generate the mbuf list with the uio_iov ref. to it. 894 */ 895 i = 0; 896 while (left > 0) { 897 NFSMGET(m); 898 MCLGET(m, M_WAITOK); 899 m->m_len = 0; 900 siz = min(M_TRAILINGSPACE(m), left); 901 left -= siz; 902 i++; 903 if (m3) 904 m2->m_next = m; 905 else 906 m3 = m; 907 m2 = m; 908 } 909 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 910 m = m3; 911 left = len; 912 i = 0; 913 while (left > 0) { 914 if (m == NULL) 915 panic("nfsrv_createiovec iov"); 916 siz = min(M_TRAILINGSPACE(m), left); 917 if (siz > 0) { 918 iv->iov_base = mtod(m, caddr_t) + m->m_len; 919 iv->iov_len = siz; 920 m->m_len += siz; 921 left -= siz; 922 iv++; 923 i++; 924 } 925 m = m->m_next; 926 } 927 *mpp = m3; 928 *mpendp = m2; 929 return (i); 930 } 931 932 /* 933 * Create an mbuf chain and an associated iovec that can be used to Read 934 * or Getextattr of data. 935 * Upon success, return pointers to the first and last mbufs in the chain 936 * plus the malloc'd iovec and its iovlen. 937 * Same as above, but creates ext_pgs mbuf(s). 938 */ 939 static int 940 nfsrv_createiovec_extpgs(int len, int maxextsiz, struct mbuf **mpp, 941 struct mbuf **mpendp, struct iovec **ivp) 942 { 943 struct mbuf *m, *m2 = NULL, *m3; 944 struct iovec *iv; 945 int i, left, pgno, siz; 946 947 left = len; 948 m3 = NULL; 949 /* 950 * Generate the mbuf list with the uio_iov ref. to it. 951 */ 952 i = 0; 953 while (left > 0) { 954 siz = min(left, maxextsiz); 955 m = mb_alloc_ext_plus_pages(siz, M_WAITOK); 956 left -= siz; 957 i += m->m_epg_npgs; 958 if (m3 != NULL) 959 m2->m_next = m; 960 else 961 m3 = m; 962 m2 = m; 963 } 964 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 965 m = m3; 966 left = len; 967 i = 0; 968 pgno = 0; 969 while (left > 0) { 970 if (m == NULL) 971 panic("nfsvno_createiovec_extpgs iov"); 972 siz = min(PAGE_SIZE, left); 973 if (siz > 0) { 974 iv->iov_base = (void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 975 iv->iov_len = siz; 976 m->m_len += siz; 977 if (pgno == m->m_epg_npgs - 1) 978 m->m_epg_last_len = siz; 979 left -= siz; 980 iv++; 981 i++; 982 pgno++; 983 } 984 if (pgno == m->m_epg_npgs && left > 0) { 985 m = m->m_next; 986 if (m == NULL) 987 panic("nfsvno_createiovec_extpgs iov"); 988 pgno = 0; 989 } 990 } 991 *mpp = m3; 992 *mpendp = m2; 993 return (i); 994 } 995 996 /* 997 * Read vnode op call into mbuf list. 998 */ 999 int 1000 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 1001 int maxextsiz, struct thread *p, struct mbuf **mpp, 1002 struct mbuf **mpendp) 1003 { 1004 struct mbuf *m; 1005 struct iovec *iv; 1006 int error = 0, len, tlen, ioflag = 0; 1007 struct mbuf *m3; 1008 struct uio io, *uiop = &io; 1009 struct nfsheur *nh; 1010 1011 /* 1012 * Attempt to read from a DS file. A return of ENOENT implies 1013 * there is no DS file to read. 1014 */ 1015 error = nfsrv_proxyds(vp, off, cnt, cred, p, NFSPROC_READDS, mpp, 1016 NULL, mpendp, NULL, NULL, NULL, 0, NULL); 1017 if (error != ENOENT) 1018 return (error); 1019 1020 len = NFSM_RNDUP(cnt); 1021 if (maxextsiz > 0) 1022 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 1023 &m3, &m, &iv); 1024 else 1025 uiop->uio_iovcnt = nfsrv_createiovec(len, &m3, &m, &iv); 1026 uiop->uio_iov = iv; 1027 uiop->uio_offset = off; 1028 uiop->uio_resid = len; 1029 uiop->uio_rw = UIO_READ; 1030 uiop->uio_segflg = UIO_SYSSPACE; 1031 uiop->uio_td = NULL; 1032 nh = nfsrv_sequential_heuristic(uiop, vp); 1033 ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 1034 /* XXX KDM make this more systematic? */ 1035 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_READ] += uiop->uio_resid; 1036 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 1037 free(iv, M_TEMP); 1038 if (error) { 1039 m_freem(m3); 1040 *mpp = NULL; 1041 goto out; 1042 } 1043 nh->nh_nextoff = uiop->uio_offset; 1044 tlen = len - uiop->uio_resid; 1045 cnt = cnt < tlen ? cnt : tlen; 1046 tlen = NFSM_RNDUP(cnt); 1047 if (tlen == 0) { 1048 m_freem(m3); 1049 m3 = m = NULL; 1050 } else if (len != tlen || tlen != cnt) 1051 m = nfsrv_adj(m3, len - tlen, tlen - cnt); 1052 *mpp = m3; 1053 *mpendp = m; 1054 1055 out: 1056 NFSEXITCODE(error); 1057 return (error); 1058 } 1059 1060 /* 1061 * Create the iovec for the mbuf chain passed in as an argument. 1062 * The "cp" argument is where the data starts within the first mbuf in 1063 * the chain. It returns the iovec and the iovcnt. 1064 */ 1065 static int 1066 nfsrv_createiovecw(int retlen, struct mbuf *m, char *cp, struct iovec **ivpp, 1067 int *iovcntp) 1068 { 1069 struct mbuf *mp; 1070 struct iovec *ivp; 1071 int cnt, i, len; 1072 1073 /* 1074 * Loop through the mbuf chain, counting how many mbufs are a 1075 * part of this write operation, so the iovec size is known. 1076 */ 1077 cnt = 0; 1078 len = retlen; 1079 mp = m; 1080 i = mtod(mp, caddr_t) + mp->m_len - cp; 1081 while (len > 0) { 1082 if (i > 0) { 1083 len -= i; 1084 cnt++; 1085 } 1086 mp = mp->m_next; 1087 if (!mp) { 1088 if (len > 0) 1089 return (EBADRPC); 1090 } else 1091 i = mp->m_len; 1092 } 1093 1094 /* Now, create the iovec. */ 1095 mp = m; 1096 *ivpp = ivp = malloc(cnt * sizeof (struct iovec), M_TEMP, 1097 M_WAITOK); 1098 *iovcntp = cnt; 1099 i = mtod(mp, caddr_t) + mp->m_len - cp; 1100 len = retlen; 1101 while (len > 0) { 1102 if (mp == NULL) 1103 panic("nfsrv_createiovecw"); 1104 if (i > 0) { 1105 i = min(i, len); 1106 ivp->iov_base = cp; 1107 ivp->iov_len = i; 1108 ivp++; 1109 len -= i; 1110 } 1111 mp = mp->m_next; 1112 if (mp) { 1113 i = mp->m_len; 1114 cp = mtod(mp, caddr_t); 1115 } 1116 } 1117 return (0); 1118 } 1119 1120 /* 1121 * Write vnode op from an mbuf list. 1122 */ 1123 int 1124 nfsvno_write(struct vnode *vp, off_t off, int retlen, int *stable, 1125 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 1126 { 1127 struct iovec *iv; 1128 int cnt, ioflags, error; 1129 struct uio io, *uiop = &io; 1130 struct nfsheur *nh; 1131 1132 /* 1133 * Attempt to write to a DS file. A return of ENOENT implies 1134 * there is no DS file to write. 1135 */ 1136 error = nfsrv_proxyds(vp, off, retlen, cred, p, NFSPROC_WRITEDS, 1137 &mp, cp, NULL, NULL, NULL, NULL, 0, NULL); 1138 if (error != ENOENT) { 1139 *stable = NFSWRITE_FILESYNC; 1140 return (error); 1141 } 1142 1143 if (*stable == NFSWRITE_UNSTABLE) 1144 ioflags = IO_NODELOCKED; 1145 else 1146 ioflags = (IO_SYNC | IO_NODELOCKED); 1147 error = nfsrv_createiovecw(retlen, mp, cp, &iv, &cnt); 1148 if (error != 0) 1149 return (error); 1150 uiop->uio_iov = iv; 1151 uiop->uio_iovcnt = cnt; 1152 uiop->uio_resid = retlen; 1153 uiop->uio_rw = UIO_WRITE; 1154 uiop->uio_segflg = UIO_SYSSPACE; 1155 NFSUIOPROC(uiop, p); 1156 uiop->uio_offset = off; 1157 nh = nfsrv_sequential_heuristic(uiop, vp); 1158 ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 1159 /* XXX KDM make this more systematic? */ 1160 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_WRITE] += uiop->uio_resid; 1161 error = VOP_WRITE(vp, uiop, ioflags, cred); 1162 if (error == 0) 1163 nh->nh_nextoff = uiop->uio_offset; 1164 free(iv, M_TEMP); 1165 1166 NFSEXITCODE(error); 1167 return (error); 1168 } 1169 1170 /* 1171 * Common code for creating a regular file (plus special files for V2). 1172 */ 1173 int 1174 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 1175 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 1176 int32_t *cverf, NFSDEV_T rdev, struct nfsexstuff *exp) 1177 { 1178 u_quad_t tempsize; 1179 int error; 1180 struct thread *p = curthread; 1181 1182 error = nd->nd_repstat; 1183 if (!error && ndp->ni_vp == NULL) { 1184 if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 1185 error = VOP_CREATE(ndp->ni_dvp, 1186 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1187 /* For a pNFS server, create the data file on a DS. */ 1188 if (error == 0 && nvap->na_type == VREG) { 1189 /* 1190 * Create a data file on a DS for a pNFS server. 1191 * This function just returns if not 1192 * running a pNFS DS or the creation fails. 1193 */ 1194 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1195 nd->nd_cred, p); 1196 } 1197 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1198 NULL, false); 1199 nfsvno_relpathbuf(ndp); 1200 if (!error) { 1201 if (*exclusive_flagp) { 1202 *exclusive_flagp = 0; 1203 NFSVNO_ATTRINIT(nvap); 1204 nvap->na_atime.tv_sec = cverf[0]; 1205 nvap->na_atime.tv_nsec = cverf[1]; 1206 error = VOP_SETATTR(ndp->ni_vp, 1207 &nvap->na_vattr, nd->nd_cred); 1208 if (error != 0) { 1209 vput(ndp->ni_vp); 1210 ndp->ni_vp = NULL; 1211 error = NFSERR_NOTSUPP; 1212 } 1213 } 1214 } 1215 /* 1216 * NFS V2 Only. nfsrvd_mknod() does this for V3. 1217 * (This implies, just get out on an error.) 1218 */ 1219 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 1220 nvap->na_type == VFIFO) { 1221 if (nvap->na_type == VCHR && rdev == 0xffffffff) 1222 nvap->na_type = VFIFO; 1223 if (nvap->na_type != VFIFO && 1224 (error = priv_check_cred(nd->nd_cred, PRIV_VFS_MKNOD_DEV))) { 1225 nfsvno_relpathbuf(ndp); 1226 vput(ndp->ni_dvp); 1227 goto out; 1228 } 1229 nvap->na_rdev = rdev; 1230 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1231 &ndp->ni_cnd, &nvap->na_vattr); 1232 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1233 NULL, false); 1234 nfsvno_relpathbuf(ndp); 1235 if (error) 1236 goto out; 1237 } else { 1238 nfsvno_relpathbuf(ndp); 1239 vput(ndp->ni_dvp); 1240 error = ENXIO; 1241 goto out; 1242 } 1243 *vpp = ndp->ni_vp; 1244 } else { 1245 /* 1246 * Handle cases where error is already set and/or 1247 * the file exists. 1248 * 1 - clean up the lookup 1249 * 2 - iff !error and na_size set, truncate it 1250 */ 1251 nfsvno_relpathbuf(ndp); 1252 *vpp = ndp->ni_vp; 1253 if (ndp->ni_dvp == *vpp) 1254 vrele(ndp->ni_dvp); 1255 else 1256 vput(ndp->ni_dvp); 1257 if (!error && nvap->na_size != VNOVAL) { 1258 error = nfsvno_accchk(*vpp, VWRITE, 1259 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1260 NFSACCCHK_VPISLOCKED, NULL); 1261 if (!error) { 1262 tempsize = nvap->na_size; 1263 NFSVNO_ATTRINIT(nvap); 1264 nvap->na_size = tempsize; 1265 error = nfsvno_setattr(*vpp, nvap, 1266 nd->nd_cred, p, exp); 1267 } 1268 } 1269 if (error) 1270 vput(*vpp); 1271 } 1272 1273 out: 1274 NFSEXITCODE(error); 1275 return (error); 1276 } 1277 1278 /* 1279 * Do a mknod vnode op. 1280 */ 1281 int 1282 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 1283 struct thread *p) 1284 { 1285 int error = 0; 1286 enum vtype vtyp; 1287 1288 vtyp = nvap->na_type; 1289 /* 1290 * Iff doesn't exist, create it. 1291 */ 1292 if (ndp->ni_vp) { 1293 nfsvno_relpathbuf(ndp); 1294 vput(ndp->ni_dvp); 1295 vrele(ndp->ni_vp); 1296 error = EEXIST; 1297 goto out; 1298 } 1299 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 1300 nfsvno_relpathbuf(ndp); 1301 vput(ndp->ni_dvp); 1302 error = NFSERR_BADTYPE; 1303 goto out; 1304 } 1305 if (vtyp == VSOCK) { 1306 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 1307 &ndp->ni_cnd, &nvap->na_vattr); 1308 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1309 false); 1310 nfsvno_relpathbuf(ndp); 1311 } else { 1312 if (nvap->na_type != VFIFO && 1313 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV))) { 1314 nfsvno_relpathbuf(ndp); 1315 vput(ndp->ni_dvp); 1316 goto out; 1317 } 1318 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1319 &ndp->ni_cnd, &nvap->na_vattr); 1320 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1321 false); 1322 nfsvno_relpathbuf(ndp); 1323 /* 1324 * Since VOP_MKNOD returns the ni_vp, I can't 1325 * see any reason to do the lookup. 1326 */ 1327 } 1328 1329 out: 1330 NFSEXITCODE(error); 1331 return (error); 1332 } 1333 1334 /* 1335 * Mkdir vnode op. 1336 */ 1337 int 1338 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 1339 struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 1340 { 1341 int error = 0; 1342 1343 if (ndp->ni_vp != NULL) { 1344 if (ndp->ni_dvp == ndp->ni_vp) 1345 vrele(ndp->ni_dvp); 1346 else 1347 vput(ndp->ni_dvp); 1348 vrele(ndp->ni_vp); 1349 nfsvno_relpathbuf(ndp); 1350 error = EEXIST; 1351 goto out; 1352 } 1353 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1354 &nvap->na_vattr); 1355 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, false); 1356 nfsvno_relpathbuf(ndp); 1357 1358 out: 1359 NFSEXITCODE(error); 1360 return (error); 1361 } 1362 1363 /* 1364 * symlink vnode op. 1365 */ 1366 int 1367 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 1368 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 1369 struct nfsexstuff *exp) 1370 { 1371 int error = 0; 1372 1373 if (ndp->ni_vp) { 1374 nfsvno_relpathbuf(ndp); 1375 if (ndp->ni_dvp == ndp->ni_vp) 1376 vrele(ndp->ni_dvp); 1377 else 1378 vput(ndp->ni_dvp); 1379 vrele(ndp->ni_vp); 1380 error = EEXIST; 1381 goto out; 1382 } 1383 1384 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1385 &nvap->na_vattr, pathcp); 1386 /* 1387 * Although FreeBSD still had the lookup code in 1388 * it for 7/current, there doesn't seem to be any 1389 * point, since VOP_SYMLINK() returns the ni_vp. 1390 * Just vput it for v2. 1391 */ 1392 VOP_VPUT_PAIR(ndp->ni_dvp, &ndp->ni_vp, !not_v2 && error == 0); 1393 nfsvno_relpathbuf(ndp); 1394 1395 out: 1396 NFSEXITCODE(error); 1397 return (error); 1398 } 1399 1400 /* 1401 * Parse symbolic link arguments. 1402 * This function has an ugly side effect. It will malloc() an area for 1403 * the symlink and set iov_base to point to it, only if it succeeds. 1404 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 1405 * be FREE'd later. 1406 */ 1407 int 1408 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 1409 struct thread *p, char **pathcpp, int *lenp) 1410 { 1411 u_int32_t *tl; 1412 char *pathcp = NULL; 1413 int error = 0, len; 1414 struct nfsv2_sattr *sp; 1415 1416 *pathcpp = NULL; 1417 *lenp = 0; 1418 if ((nd->nd_flag & ND_NFSV3) && 1419 (error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p))) 1420 goto nfsmout; 1421 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1422 len = fxdr_unsigned(int, *tl); 1423 if (len > NFS_MAXPATHLEN || len <= 0) { 1424 error = EBADRPC; 1425 goto nfsmout; 1426 } 1427 pathcp = malloc(len + 1, M_TEMP, M_WAITOK); 1428 error = nfsrv_mtostr(nd, pathcp, len); 1429 if (error) 1430 goto nfsmout; 1431 if (nd->nd_flag & ND_NFSV2) { 1432 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1433 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1434 } 1435 *pathcpp = pathcp; 1436 *lenp = len; 1437 NFSEXITCODE2(0, nd); 1438 return (0); 1439 nfsmout: 1440 if (pathcp) 1441 free(pathcp, M_TEMP); 1442 NFSEXITCODE2(error, nd); 1443 return (error); 1444 } 1445 1446 /* 1447 * Remove a non-directory object. 1448 */ 1449 int 1450 nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1451 struct thread *p, struct nfsexstuff *exp) 1452 { 1453 struct vnode *vp, *dsdvp[NFSDEV_MAXMIRRORS]; 1454 int error = 0, mirrorcnt; 1455 char fname[PNFS_FILENAME_LEN + 1]; 1456 fhandle_t fh; 1457 1458 vp = ndp->ni_vp; 1459 dsdvp[0] = NULL; 1460 if (vp->v_type == VDIR) 1461 error = NFSERR_ISDIR; 1462 else if (is_v4) 1463 error = nfsrv_checkremove(vp, 1, NULL, (nfsquad_t)((u_quad_t)0), 1464 p); 1465 if (error == 0) 1466 nfsrv_pnfsremovesetup(vp, p, dsdvp, &mirrorcnt, fname, &fh); 1467 if (!error) 1468 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1469 if (error == 0 && dsdvp[0] != NULL) 1470 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1471 if (ndp->ni_dvp == vp) 1472 vrele(ndp->ni_dvp); 1473 else 1474 vput(ndp->ni_dvp); 1475 vput(vp); 1476 nfsvno_relpathbuf(ndp); 1477 NFSEXITCODE(error); 1478 return (error); 1479 } 1480 1481 /* 1482 * Remove a directory. 1483 */ 1484 int 1485 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1486 struct thread *p, struct nfsexstuff *exp) 1487 { 1488 struct vnode *vp; 1489 int error = 0; 1490 1491 vp = ndp->ni_vp; 1492 if (vp->v_type != VDIR) { 1493 error = ENOTDIR; 1494 goto out; 1495 } 1496 /* 1497 * No rmdir "." please. 1498 */ 1499 if (ndp->ni_dvp == vp) { 1500 error = EINVAL; 1501 goto out; 1502 } 1503 /* 1504 * The root of a mounted filesystem cannot be deleted. 1505 */ 1506 if (vp->v_vflag & VV_ROOT) 1507 error = EBUSY; 1508 out: 1509 if (!error) 1510 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1511 if (ndp->ni_dvp == vp) 1512 vrele(ndp->ni_dvp); 1513 else 1514 vput(ndp->ni_dvp); 1515 vput(vp); 1516 nfsvno_relpathbuf(ndp); 1517 NFSEXITCODE(error); 1518 return (error); 1519 } 1520 1521 /* 1522 * Rename vnode op. 1523 */ 1524 int 1525 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1526 u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1527 { 1528 struct vnode *fvp, *tvp, *tdvp, *dsdvp[NFSDEV_MAXMIRRORS]; 1529 int error = 0, mirrorcnt; 1530 char fname[PNFS_FILENAME_LEN + 1]; 1531 fhandle_t fh; 1532 1533 dsdvp[0] = NULL; 1534 fvp = fromndp->ni_vp; 1535 if (ndstat) { 1536 vrele(fromndp->ni_dvp); 1537 vrele(fvp); 1538 error = ndstat; 1539 goto out1; 1540 } 1541 tdvp = tondp->ni_dvp; 1542 tvp = tondp->ni_vp; 1543 if (tvp != NULL) { 1544 if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1545 error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1546 goto out; 1547 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1548 error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1549 goto out; 1550 } 1551 if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1552 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1553 goto out; 1554 } 1555 1556 /* 1557 * A rename to '.' or '..' results in a prematurely 1558 * unlocked vnode on FreeBSD5, so I'm just going to fail that 1559 * here. 1560 */ 1561 if ((tondp->ni_cnd.cn_namelen == 1 && 1562 tondp->ni_cnd.cn_nameptr[0] == '.') || 1563 (tondp->ni_cnd.cn_namelen == 2 && 1564 tondp->ni_cnd.cn_nameptr[0] == '.' && 1565 tondp->ni_cnd.cn_nameptr[1] == '.')) { 1566 error = EINVAL; 1567 goto out; 1568 } 1569 } 1570 if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1571 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1572 goto out; 1573 } 1574 if (fvp->v_mount != tdvp->v_mount) { 1575 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1576 goto out; 1577 } 1578 if (fvp == tdvp) { 1579 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1580 goto out; 1581 } 1582 if (fvp == tvp) { 1583 /* 1584 * If source and destination are the same, there is nothing to 1585 * do. Set error to -1 to indicate this. 1586 */ 1587 error = -1; 1588 goto out; 1589 } 1590 if (ndflag & ND_NFSV4) { 1591 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1592 error = nfsrv_checkremove(fvp, 0, NULL, 1593 (nfsquad_t)((u_quad_t)0), p); 1594 NFSVOPUNLOCK(fvp); 1595 } else 1596 error = EPERM; 1597 if (tvp && !error) 1598 error = nfsrv_checkremove(tvp, 1, NULL, 1599 (nfsquad_t)((u_quad_t)0), p); 1600 } else { 1601 /* 1602 * For NFSv2 and NFSv3, try to get rid of the delegation, so 1603 * that the NFSv4 client won't be confused by the rename. 1604 * Since nfsd_recalldelegation() can only be called on an 1605 * unlocked vnode at this point and fvp is the file that will 1606 * still exist after the rename, just do fvp. 1607 */ 1608 nfsd_recalldelegation(fvp, p); 1609 } 1610 if (error == 0 && tvp != NULL) { 1611 nfsrv_pnfsremovesetup(tvp, p, dsdvp, &mirrorcnt, fname, &fh); 1612 NFSD_DEBUG(4, "nfsvno_rename: pnfsremovesetup" 1613 " dsdvp=%p\n", dsdvp[0]); 1614 } 1615 out: 1616 if (!error) { 1617 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1618 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1619 &tondp->ni_cnd); 1620 } else { 1621 if (tdvp == tvp) 1622 vrele(tdvp); 1623 else 1624 vput(tdvp); 1625 if (tvp) 1626 vput(tvp); 1627 vrele(fromndp->ni_dvp); 1628 vrele(fvp); 1629 if (error == -1) 1630 error = 0; 1631 } 1632 1633 /* 1634 * If dsdvp[0] != NULL, it was set up by nfsrv_pnfsremovesetup() and 1635 * if the rename succeeded, the DS file for the tvp needs to be 1636 * removed. 1637 */ 1638 if (error == 0 && dsdvp[0] != NULL) { 1639 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1640 NFSD_DEBUG(4, "nfsvno_rename: pnfsremove\n"); 1641 } 1642 1643 nfsvno_relpathbuf(tondp); 1644 out1: 1645 nfsvno_relpathbuf(fromndp); 1646 NFSEXITCODE(error); 1647 return (error); 1648 } 1649 1650 /* 1651 * Link vnode op. 1652 */ 1653 int 1654 nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1655 struct thread *p, struct nfsexstuff *exp) 1656 { 1657 struct vnode *xp; 1658 int error = 0; 1659 1660 xp = ndp->ni_vp; 1661 if (xp != NULL) { 1662 error = EEXIST; 1663 } else { 1664 xp = ndp->ni_dvp; 1665 if (vp->v_mount != xp->v_mount) 1666 error = EXDEV; 1667 } 1668 if (!error) { 1669 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1670 if (!VN_IS_DOOMED(vp)) 1671 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1672 else 1673 error = EPERM; 1674 if (ndp->ni_dvp == vp) { 1675 vrele(ndp->ni_dvp); 1676 NFSVOPUNLOCK(vp); 1677 } else { 1678 vref(vp); 1679 VOP_VPUT_PAIR(ndp->ni_dvp, &vp, true); 1680 } 1681 } else { 1682 if (ndp->ni_dvp == ndp->ni_vp) 1683 vrele(ndp->ni_dvp); 1684 else 1685 vput(ndp->ni_dvp); 1686 if (ndp->ni_vp) 1687 vrele(ndp->ni_vp); 1688 } 1689 nfsvno_relpathbuf(ndp); 1690 NFSEXITCODE(error); 1691 return (error); 1692 } 1693 1694 /* 1695 * Do the fsync() appropriate for the commit. 1696 */ 1697 int 1698 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1699 struct thread *td) 1700 { 1701 int error = 0; 1702 1703 /* 1704 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1705 * file is done. At this time VOP_FSYNC does not accept offset and 1706 * byte count parameters so call VOP_FSYNC the whole file for now. 1707 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1708 * File systems that do not use the buffer cache (as indicated 1709 * by MNTK_USES_BCACHE not being set) must use VOP_FSYNC(). 1710 */ 1711 if (cnt == 0 || cnt > MAX_COMMIT_COUNT || 1712 (vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) { 1713 /* 1714 * Give up and do the whole thing 1715 */ 1716 if (vp->v_object && vm_object_mightbedirty(vp->v_object)) { 1717 VM_OBJECT_WLOCK(vp->v_object); 1718 vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1719 VM_OBJECT_WUNLOCK(vp->v_object); 1720 } 1721 error = VOP_FSYNC(vp, MNT_WAIT, td); 1722 } else { 1723 /* 1724 * Locate and synchronously write any buffers that fall 1725 * into the requested range. Note: we are assuming that 1726 * f_iosize is a power of 2. 1727 */ 1728 int iosize = vp->v_mount->mnt_stat.f_iosize; 1729 int iomask = iosize - 1; 1730 struct bufobj *bo; 1731 daddr_t lblkno; 1732 1733 /* 1734 * Align to iosize boundary, super-align to page boundary. 1735 */ 1736 if (off & iomask) { 1737 cnt += off & iomask; 1738 off &= ~(u_quad_t)iomask; 1739 } 1740 if (off & PAGE_MASK) { 1741 cnt += off & PAGE_MASK; 1742 off &= ~(u_quad_t)PAGE_MASK; 1743 } 1744 lblkno = off / iosize; 1745 1746 if (vp->v_object && vm_object_mightbedirty(vp->v_object)) { 1747 VM_OBJECT_WLOCK(vp->v_object); 1748 vm_object_page_clean(vp->v_object, off, off + cnt, 1749 OBJPC_SYNC); 1750 VM_OBJECT_WUNLOCK(vp->v_object); 1751 } 1752 1753 bo = &vp->v_bufobj; 1754 BO_LOCK(bo); 1755 while (cnt > 0) { 1756 struct buf *bp; 1757 1758 /* 1759 * If we have a buffer and it is marked B_DELWRI we 1760 * have to lock and write it. Otherwise the prior 1761 * write is assumed to have already been committed. 1762 * 1763 * gbincore() can return invalid buffers now so we 1764 * have to check that bit as well (though B_DELWRI 1765 * should not be set if B_INVAL is set there could be 1766 * a race here since we haven't locked the buffer). 1767 */ 1768 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1769 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1770 LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { 1771 BO_LOCK(bo); 1772 continue; /* retry */ 1773 } 1774 if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1775 B_DELWRI) { 1776 bremfree(bp); 1777 bp->b_flags &= ~B_ASYNC; 1778 bwrite(bp); 1779 ++nfs_commit_miss; 1780 } else 1781 BUF_UNLOCK(bp); 1782 BO_LOCK(bo); 1783 } 1784 ++nfs_commit_blks; 1785 if (cnt < iosize) 1786 break; 1787 cnt -= iosize; 1788 ++lblkno; 1789 } 1790 BO_UNLOCK(bo); 1791 } 1792 NFSEXITCODE(error); 1793 return (error); 1794 } 1795 1796 /* 1797 * Statfs vnode op. 1798 */ 1799 int 1800 nfsvno_statfs(struct vnode *vp, struct statfs *sf) 1801 { 1802 struct statfs *tsf; 1803 int error; 1804 1805 tsf = NULL; 1806 if (nfsrv_devidcnt > 0) { 1807 /* For a pNFS service, get the DS numbers. */ 1808 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK | M_ZERO); 1809 error = nfsrv_pnfsstatfs(tsf, vp->v_mount); 1810 if (error != 0) { 1811 free(tsf, M_TEMP); 1812 tsf = NULL; 1813 } 1814 } 1815 error = VFS_STATFS(vp->v_mount, sf); 1816 if (error == 0) { 1817 if (tsf != NULL) { 1818 sf->f_blocks = tsf->f_blocks; 1819 sf->f_bavail = tsf->f_bavail; 1820 sf->f_bfree = tsf->f_bfree; 1821 sf->f_bsize = tsf->f_bsize; 1822 } 1823 /* 1824 * Since NFS handles these values as unsigned on the 1825 * wire, there is no way to represent negative values, 1826 * so set them to 0. Without this, they will appear 1827 * to be very large positive values for clients like 1828 * Solaris10. 1829 */ 1830 if (sf->f_bavail < 0) 1831 sf->f_bavail = 0; 1832 if (sf->f_ffree < 0) 1833 sf->f_ffree = 0; 1834 } 1835 free(tsf, M_TEMP); 1836 NFSEXITCODE(error); 1837 return (error); 1838 } 1839 1840 /* 1841 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1842 * must handle nfsrv_opencheck() calls after any other access checks. 1843 */ 1844 void 1845 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1846 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1847 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1848 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, bool done_namei, 1849 struct nfsexstuff *exp, struct vnode **vpp) 1850 { 1851 struct vnode *vp = NULL; 1852 u_quad_t tempsize; 1853 struct nfsexstuff nes; 1854 struct thread *p = curthread; 1855 uint32_t oldrepstat; 1856 1857 if (ndp->ni_vp == NULL) { 1858 /* 1859 * If nfsrv_opencheck() sets nd_repstat, done_namei needs to be 1860 * set true, since cleanup after nfsvno_namei() is needed. 1861 */ 1862 oldrepstat = nd->nd_repstat; 1863 nd->nd_repstat = nfsrv_opencheck(clientid, 1864 stateidp, stp, NULL, nd, p, nd->nd_repstat); 1865 if (nd->nd_repstat != 0 && oldrepstat == 0) 1866 done_namei = true; 1867 } 1868 if (!nd->nd_repstat) { 1869 if (ndp->ni_vp == NULL) { 1870 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1871 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1872 /* For a pNFS server, create the data file on a DS. */ 1873 if (nd->nd_repstat == 0) { 1874 /* 1875 * Create a data file on a DS for a pNFS server. 1876 * This function just returns if not 1877 * running a pNFS DS or the creation fails. 1878 */ 1879 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1880 cred, p); 1881 } 1882 VOP_VPUT_PAIR(ndp->ni_dvp, nd->nd_repstat == 0 ? 1883 &ndp->ni_vp : NULL, false); 1884 nfsvno_relpathbuf(ndp); 1885 if (!nd->nd_repstat) { 1886 if (*exclusive_flagp) { 1887 *exclusive_flagp = 0; 1888 NFSVNO_ATTRINIT(nvap); 1889 nvap->na_atime.tv_sec = cverf[0]; 1890 nvap->na_atime.tv_nsec = cverf[1]; 1891 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1892 &nvap->na_vattr, cred); 1893 if (nd->nd_repstat != 0) { 1894 vput(ndp->ni_vp); 1895 ndp->ni_vp = NULL; 1896 nd->nd_repstat = NFSERR_NOTSUPP; 1897 } else 1898 NFSSETBIT_ATTRBIT(attrbitp, 1899 NFSATTRBIT_TIMEACCESS); 1900 } else { 1901 nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1902 aclp, p, attrbitp, exp); 1903 } 1904 } 1905 vp = ndp->ni_vp; 1906 } else { 1907 nfsvno_relpathbuf(ndp); 1908 vp = ndp->ni_vp; 1909 if (create == NFSV4OPEN_CREATE) { 1910 if (ndp->ni_dvp == vp) 1911 vrele(ndp->ni_dvp); 1912 else 1913 vput(ndp->ni_dvp); 1914 } 1915 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1916 if (ndp->ni_cnd.cn_flags & RDONLY) 1917 NFSVNO_SETEXRDONLY(&nes); 1918 else 1919 NFSVNO_EXINIT(&nes); 1920 nd->nd_repstat = nfsvno_accchk(vp, 1921 VWRITE, cred, &nes, p, 1922 NFSACCCHK_NOOVERRIDE, 1923 NFSACCCHK_VPISLOCKED, NULL); 1924 nd->nd_repstat = nfsrv_opencheck(clientid, 1925 stateidp, stp, vp, nd, p, nd->nd_repstat); 1926 if (!nd->nd_repstat) { 1927 tempsize = nvap->na_size; 1928 NFSVNO_ATTRINIT(nvap); 1929 nvap->na_size = tempsize; 1930 nd->nd_repstat = nfsvno_setattr(vp, 1931 nvap, cred, p, exp); 1932 } 1933 } else if (vp->v_type == VREG) { 1934 nd->nd_repstat = nfsrv_opencheck(clientid, 1935 stateidp, stp, vp, nd, p, nd->nd_repstat); 1936 } 1937 } 1938 } else if (done_namei) { 1939 KASSERT(create == NFSV4OPEN_CREATE, 1940 ("nfsvno_open: not create")); 1941 /* 1942 * done_namei is set when nfsvno_namei() has completed 1943 * successfully, but a subsequent error was set in 1944 * nd_repstat. As such, cleanup of the nfsvno_namei() 1945 * results is required. 1946 */ 1947 nfsvno_relpathbuf(ndp); 1948 if (ndp->ni_dvp == ndp->ni_vp) 1949 vrele(ndp->ni_dvp); 1950 else 1951 vput(ndp->ni_dvp); 1952 if (ndp->ni_vp) 1953 vput(ndp->ni_vp); 1954 } 1955 *vpp = vp; 1956 1957 NFSEXITCODE2(0, nd); 1958 } 1959 1960 /* 1961 * Updates the file rev and sets the mtime and ctime 1962 * to the current clock time, returning the va_filerev and va_Xtime 1963 * values. 1964 * Return ESTALE to indicate the vnode is VIRF_DOOMED. 1965 */ 1966 int 1967 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1968 struct nfsrv_descript *nd, struct thread *p) 1969 { 1970 struct vattr va; 1971 1972 VATTR_NULL(&va); 1973 vfs_timestamp(&va.va_mtime); 1974 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 1975 NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); 1976 if (VN_IS_DOOMED(vp)) 1977 return (ESTALE); 1978 } 1979 (void) VOP_SETATTR(vp, &va, nd->nd_cred); 1980 (void) nfsvno_getattr(vp, nvap, nd, p, 1, NULL); 1981 return (0); 1982 } 1983 1984 /* 1985 * Glue routine to nfsv4_fillattr(). 1986 */ 1987 int 1988 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1989 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1990 struct ucred *cred, struct thread *p, int isdgram, int reterr, 1991 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1992 { 1993 struct statfs *sf; 1994 int error; 1995 1996 sf = NULL; 1997 if (nfsrv_devidcnt > 0 && 1998 (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEAVAIL) || 1999 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEFREE) || 2000 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACETOTAL))) { 2001 sf = malloc(sizeof(*sf), M_TEMP, M_WAITOK | M_ZERO); 2002 error = nfsrv_pnfsstatfs(sf, mp); 2003 if (error != 0) { 2004 free(sf, M_TEMP); 2005 sf = NULL; 2006 } 2007 } 2008 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 2009 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 2010 mounted_on_fileno, sf); 2011 free(sf, M_TEMP); 2012 NFSEXITCODE2(0, nd); 2013 return (error); 2014 } 2015 2016 /* Since the Readdir vnode ops vary, put the entire functions in here. */ 2017 /* 2018 * nfs readdir service 2019 * - mallocs what it thinks is enough to read 2020 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 2021 * - calls VOP_READDIR() 2022 * - loops around building the reply 2023 * if the output generated exceeds count break out of loop 2024 * The NFSM_CLGET macro is used here so that the reply will be packed 2025 * tightly in mbuf clusters. 2026 * - it trims out records with d_fileno == 0 2027 * this doesn't matter for Unix clients, but they might confuse clients 2028 * for other os'. 2029 * - it trims out records with d_type == DT_WHT 2030 * these cannot be seen through NFS (unless we extend the protocol) 2031 * The alternate call nfsrvd_readdirplus() does lookups as well. 2032 * PS: The NFS protocol spec. does not clarify what the "count" byte 2033 * argument is a count of.. just name strings and file id's or the 2034 * entire reply rpc or ... 2035 * I tried just file name and id sizes and it confused the Sun client, 2036 * so I am using the full rpc size now. The "paranoia.." comment refers 2037 * to including the status longwords that are not a part of the dir. 2038 * "entry" structures, but are in the rpc. 2039 */ 2040 int 2041 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 2042 struct vnode *vp, struct nfsexstuff *exp) 2043 { 2044 struct dirent *dp; 2045 u_int32_t *tl; 2046 int dirlen; 2047 char *cpos, *cend, *rbuf; 2048 struct nfsvattr at; 2049 int nlen, error = 0, getret = 1; 2050 int siz, cnt, fullsiz, eofflag, ncookies; 2051 u_int64_t off, toff, verf __unused; 2052 uint64_t *cookies = NULL, *cookiep; 2053 struct uio io; 2054 struct iovec iv; 2055 int is_ufs; 2056 struct thread *p = curthread; 2057 2058 if (nd->nd_repstat) { 2059 nfsrv_postopattr(nd, getret, &at); 2060 goto out; 2061 } 2062 if (nd->nd_flag & ND_NFSV2) { 2063 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2064 off = fxdr_unsigned(u_quad_t, *tl++); 2065 } else { 2066 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2067 off = fxdr_hyper(tl); 2068 tl += 2; 2069 verf = fxdr_hyper(tl); 2070 tl += 2; 2071 } 2072 toff = off; 2073 cnt = fxdr_unsigned(int, *tl); 2074 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2075 cnt = NFS_SRVMAXDATA(nd); 2076 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2077 fullsiz = siz; 2078 if (nd->nd_flag & ND_NFSV3) { 2079 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, 2080 NULL); 2081 #if 0 2082 /* 2083 * va_filerev is not sufficient as a cookie verifier, 2084 * since it is not supposed to change when entries are 2085 * removed/added unless that offset cookies returned to 2086 * the client are no longer valid. 2087 */ 2088 if (!nd->nd_repstat && toff && verf != at.na_filerev) 2089 nd->nd_repstat = NFSERR_BAD_COOKIE; 2090 #endif 2091 } 2092 if (!nd->nd_repstat && vp->v_type != VDIR) 2093 nd->nd_repstat = NFSERR_NOTDIR; 2094 if (nd->nd_repstat == 0 && cnt == 0) { 2095 if (nd->nd_flag & ND_NFSV2) 2096 /* NFSv2 does not have NFSERR_TOOSMALL */ 2097 nd->nd_repstat = EPERM; 2098 else 2099 nd->nd_repstat = NFSERR_TOOSMALL; 2100 } 2101 if (!nd->nd_repstat) 2102 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2103 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2104 NFSACCCHK_VPISLOCKED, NULL); 2105 if (nd->nd_repstat) { 2106 vput(vp); 2107 if (nd->nd_flag & ND_NFSV3) 2108 nfsrv_postopattr(nd, getret, &at); 2109 goto out; 2110 } 2111 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2112 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2113 again: 2114 eofflag = 0; 2115 if (cookies) { 2116 free(cookies, M_TEMP); 2117 cookies = NULL; 2118 } 2119 2120 iv.iov_base = rbuf; 2121 iv.iov_len = siz; 2122 io.uio_iov = &iv; 2123 io.uio_iovcnt = 1; 2124 io.uio_offset = (off_t)off; 2125 io.uio_resid = siz; 2126 io.uio_segflg = UIO_SYSSPACE; 2127 io.uio_rw = UIO_READ; 2128 io.uio_td = NULL; 2129 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2130 &cookies); 2131 off = (u_int64_t)io.uio_offset; 2132 if (io.uio_resid) 2133 siz -= io.uio_resid; 2134 2135 if (!cookies && !nd->nd_repstat) 2136 nd->nd_repstat = NFSERR_PERM; 2137 if (nd->nd_flag & ND_NFSV3) { 2138 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2139 if (!nd->nd_repstat) 2140 nd->nd_repstat = getret; 2141 } 2142 2143 /* 2144 * Handles the failed cases. nd->nd_repstat == 0 past here. 2145 */ 2146 if (nd->nd_repstat) { 2147 vput(vp); 2148 free(rbuf, M_TEMP); 2149 if (cookies) 2150 free(cookies, M_TEMP); 2151 if (nd->nd_flag & ND_NFSV3) 2152 nfsrv_postopattr(nd, getret, &at); 2153 goto out; 2154 } 2155 /* 2156 * If nothing read, return eof 2157 * rpc reply 2158 */ 2159 if (siz == 0) { 2160 vput(vp); 2161 if (nd->nd_flag & ND_NFSV2) { 2162 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2163 } else { 2164 nfsrv_postopattr(nd, getret, &at); 2165 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2166 txdr_hyper(at.na_filerev, tl); 2167 tl += 2; 2168 } 2169 *tl++ = newnfs_false; 2170 *tl = newnfs_true; 2171 free(rbuf, M_TEMP); 2172 free(cookies, M_TEMP); 2173 goto out; 2174 } 2175 2176 /* 2177 * Check for degenerate cases of nothing useful read. 2178 * If so go try again 2179 */ 2180 cpos = rbuf; 2181 cend = rbuf + siz; 2182 dp = (struct dirent *)cpos; 2183 cookiep = cookies; 2184 2185 /* 2186 * For some reason FreeBSD's ufs_readdir() chooses to back the 2187 * directory offset up to a block boundary, so it is necessary to 2188 * skip over the records that precede the requested offset. This 2189 * requires the assumption that file offset cookies monotonically 2190 * increase. 2191 */ 2192 while (cpos < cend && ncookies > 0 && 2193 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2194 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) { 2195 cpos += dp->d_reclen; 2196 dp = (struct dirent *)cpos; 2197 cookiep++; 2198 ncookies--; 2199 } 2200 if (cpos >= cend || ncookies == 0) { 2201 siz = fullsiz; 2202 toff = off; 2203 goto again; 2204 } 2205 vput(vp); 2206 2207 /* 2208 * If cnt > MCLBYTES and the reply will not be saved, use 2209 * ext_pgs mbufs for TLS. 2210 * For NFSv4.0, we do not know for sure if the reply will 2211 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2212 */ 2213 if (cnt > MCLBYTES && siz > MCLBYTES && 2214 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2215 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2216 nd->nd_flag |= ND_EXTPG; 2217 2218 /* 2219 * dirlen is the size of the reply, including all XDR and must 2220 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 2221 * if the XDR should be included in "count", but to be safe, we do. 2222 * (Include the two booleans at the end of the reply in dirlen now.) 2223 */ 2224 if (nd->nd_flag & ND_NFSV3) { 2225 nfsrv_postopattr(nd, getret, &at); 2226 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2227 txdr_hyper(at.na_filerev, tl); 2228 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2229 } else { 2230 dirlen = 2 * NFSX_UNSIGNED; 2231 } 2232 2233 /* Loop through the records and build reply */ 2234 while (cpos < cend && ncookies > 0) { 2235 nlen = dp->d_namlen; 2236 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2237 nlen <= NFS_MAXNAMLEN) { 2238 if (nd->nd_flag & ND_NFSV3) 2239 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2240 else 2241 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2242 if (dirlen > cnt) { 2243 eofflag = 0; 2244 break; 2245 } 2246 2247 /* 2248 * Build the directory record xdr from 2249 * the dirent entry. 2250 */ 2251 if (nd->nd_flag & ND_NFSV3) { 2252 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2253 *tl++ = newnfs_true; 2254 *tl++ = 0; 2255 } else { 2256 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2257 *tl++ = newnfs_true; 2258 } 2259 *tl = txdr_unsigned(dp->d_fileno); 2260 (void) nfsm_strtom(nd, dp->d_name, nlen); 2261 if (nd->nd_flag & ND_NFSV3) { 2262 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2263 txdr_hyper(*cookiep, tl); 2264 } else { 2265 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2266 *tl = txdr_unsigned(*cookiep); 2267 } 2268 } 2269 cpos += dp->d_reclen; 2270 dp = (struct dirent *)cpos; 2271 cookiep++; 2272 ncookies--; 2273 } 2274 if (cpos < cend) 2275 eofflag = 0; 2276 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2277 *tl++ = newnfs_false; 2278 if (eofflag) 2279 *tl = newnfs_true; 2280 else 2281 *tl = newnfs_false; 2282 free(rbuf, M_TEMP); 2283 free(cookies, M_TEMP); 2284 2285 out: 2286 NFSEXITCODE2(0, nd); 2287 return (0); 2288 nfsmout: 2289 vput(vp); 2290 NFSEXITCODE2(error, nd); 2291 return (error); 2292 } 2293 2294 /* 2295 * Readdirplus for V3 and Readdir for V4. 2296 */ 2297 int 2298 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 2299 struct vnode *vp, struct nfsexstuff *exp) 2300 { 2301 struct dirent *dp; 2302 u_int32_t *tl; 2303 int dirlen; 2304 char *cpos, *cend, *rbuf; 2305 struct vnode *nvp; 2306 fhandle_t nfh; 2307 struct nfsvattr nva, at, *nvap = &nva; 2308 struct mbuf *mb0, *mb1; 2309 struct nfsreferral *refp; 2310 int nlen, r, error = 0, getret = 1, usevget = 1; 2311 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 2312 caddr_t bpos0, bpos1; 2313 u_int64_t off, toff, verf __unused; 2314 uint64_t *cookies = NULL, *cookiep; 2315 nfsattrbit_t attrbits, rderrbits, savbits; 2316 struct uio io; 2317 struct iovec iv; 2318 struct componentname cn; 2319 int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls; 2320 struct mount *mp, *new_mp; 2321 uint64_t mounted_on_fileno; 2322 struct thread *p = curthread; 2323 int bextpg0, bextpg1, bextpgsiz0, bextpgsiz1; 2324 2325 if (nd->nd_repstat) { 2326 nfsrv_postopattr(nd, getret, &at); 2327 goto out; 2328 } 2329 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 2330 off = fxdr_hyper(tl); 2331 toff = off; 2332 tl += 2; 2333 verf = fxdr_hyper(tl); 2334 tl += 2; 2335 siz = fxdr_unsigned(int, *tl++); 2336 cnt = fxdr_unsigned(int, *tl); 2337 2338 /* 2339 * Use the server's maximum data transfer size as the upper bound 2340 * on reply datalen. 2341 */ 2342 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2343 cnt = NFS_SRVMAXDATA(nd); 2344 2345 /* 2346 * siz is a "hint" of how much directory information (name, fileid, 2347 * cookie) should be in the reply. At least one client "hints" 0, 2348 * so I set it to cnt for that case. I also round it up to the 2349 * next multiple of DIRBLKSIZ. 2350 * Since the size of a Readdirplus directory entry reply will always 2351 * be greater than a directory entry returned by VOP_READDIR(), it 2352 * does not make sense to read more than NFS_SRVMAXDATA() via 2353 * VOP_READDIR(). 2354 */ 2355 if (siz <= 0) 2356 siz = cnt; 2357 else if (siz > NFS_SRVMAXDATA(nd)) 2358 siz = NFS_SRVMAXDATA(nd); 2359 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2360 2361 if (nd->nd_flag & ND_NFSV4) { 2362 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2363 if (error) 2364 goto nfsmout; 2365 NFSSET_ATTRBIT(&savbits, &attrbits); 2366 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits, nd); 2367 NFSZERO_ATTRBIT(&rderrbits); 2368 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 2369 } else { 2370 NFSZERO_ATTRBIT(&attrbits); 2371 } 2372 fullsiz = siz; 2373 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2374 #if 0 2375 if (!nd->nd_repstat) { 2376 if (off && verf != at.na_filerev) { 2377 /* 2378 * va_filerev is not sufficient as a cookie verifier, 2379 * since it is not supposed to change when entries are 2380 * removed/added unless that offset cookies returned to 2381 * the client are no longer valid. 2382 */ 2383 if (nd->nd_flag & ND_NFSV4) { 2384 nd->nd_repstat = NFSERR_NOTSAME; 2385 } else { 2386 nd->nd_repstat = NFSERR_BAD_COOKIE; 2387 } 2388 } 2389 } 2390 #endif 2391 if (!nd->nd_repstat && vp->v_type != VDIR) 2392 nd->nd_repstat = NFSERR_NOTDIR; 2393 if (!nd->nd_repstat && cnt == 0) 2394 nd->nd_repstat = NFSERR_TOOSMALL; 2395 if (!nd->nd_repstat) 2396 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2397 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2398 NFSACCCHK_VPISLOCKED, NULL); 2399 if (nd->nd_repstat) { 2400 vput(vp); 2401 if (nd->nd_flag & ND_NFSV3) 2402 nfsrv_postopattr(nd, getret, &at); 2403 goto out; 2404 } 2405 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2406 is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0; 2407 2408 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2409 again: 2410 eofflag = 0; 2411 if (cookies) { 2412 free(cookies, M_TEMP); 2413 cookies = NULL; 2414 } 2415 2416 iv.iov_base = rbuf; 2417 iv.iov_len = siz; 2418 io.uio_iov = &iv; 2419 io.uio_iovcnt = 1; 2420 io.uio_offset = (off_t)off; 2421 io.uio_resid = siz; 2422 io.uio_segflg = UIO_SYSSPACE; 2423 io.uio_rw = UIO_READ; 2424 io.uio_td = NULL; 2425 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2426 &cookies); 2427 off = (u_int64_t)io.uio_offset; 2428 if (io.uio_resid) 2429 siz -= io.uio_resid; 2430 2431 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2432 2433 if (!cookies && !nd->nd_repstat) 2434 nd->nd_repstat = NFSERR_PERM; 2435 if (!nd->nd_repstat) 2436 nd->nd_repstat = getret; 2437 if (nd->nd_repstat) { 2438 vput(vp); 2439 if (cookies) 2440 free(cookies, M_TEMP); 2441 free(rbuf, M_TEMP); 2442 if (nd->nd_flag & ND_NFSV3) 2443 nfsrv_postopattr(nd, getret, &at); 2444 goto out; 2445 } 2446 /* 2447 * If nothing read, return eof 2448 * rpc reply 2449 */ 2450 if (siz == 0) { 2451 vput(vp); 2452 if (nd->nd_flag & ND_NFSV3) 2453 nfsrv_postopattr(nd, getret, &at); 2454 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2455 txdr_hyper(at.na_filerev, tl); 2456 tl += 2; 2457 *tl++ = newnfs_false; 2458 *tl = newnfs_true; 2459 free(cookies, M_TEMP); 2460 free(rbuf, M_TEMP); 2461 goto out; 2462 } 2463 2464 /* 2465 * Check for degenerate cases of nothing useful read. 2466 * If so go try again 2467 */ 2468 cpos = rbuf; 2469 cend = rbuf + siz; 2470 dp = (struct dirent *)cpos; 2471 cookiep = cookies; 2472 2473 /* 2474 * For some reason FreeBSD's ufs_readdir() chooses to back the 2475 * directory offset up to a block boundary, so it is necessary to 2476 * skip over the records that precede the requested offset. This 2477 * requires the assumption that file offset cookies monotonically 2478 * increase. 2479 */ 2480 while (cpos < cend && ncookies > 0 && 2481 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2482 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) || 2483 ((nd->nd_flag & ND_NFSV4) && 2484 ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 2485 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 2486 cpos += dp->d_reclen; 2487 dp = (struct dirent *)cpos; 2488 cookiep++; 2489 ncookies--; 2490 } 2491 if (cpos >= cend || ncookies == 0) { 2492 siz = fullsiz; 2493 toff = off; 2494 goto again; 2495 } 2496 2497 /* 2498 * Busy the file system so that the mount point won't go away 2499 * and, as such, VFS_VGET() can be used safely. 2500 */ 2501 mp = vp->v_mount; 2502 vfs_ref(mp); 2503 NFSVOPUNLOCK(vp); 2504 nd->nd_repstat = vfs_busy(mp, 0); 2505 vfs_rel(mp); 2506 if (nd->nd_repstat != 0) { 2507 vrele(vp); 2508 free(cookies, M_TEMP); 2509 free(rbuf, M_TEMP); 2510 if (nd->nd_flag & ND_NFSV3) 2511 nfsrv_postopattr(nd, getret, &at); 2512 goto out; 2513 } 2514 2515 /* 2516 * Check to see if entries in this directory can be safely acquired 2517 * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. 2518 * ZFS snapshot directories need VOP_LOOKUP(), so that any 2519 * automount of the snapshot directory that is required will 2520 * be done. 2521 * This needs to be done here for NFSv4, since NFSv4 never does 2522 * a VFS_VGET() for "." or "..". 2523 */ 2524 if (is_zfs == 1) { 2525 r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); 2526 if (r == EOPNOTSUPP) { 2527 usevget = 0; 2528 cn.cn_nameiop = LOOKUP; 2529 cn.cn_lkflags = LK_SHARED | LK_RETRY; 2530 cn.cn_cred = nd->nd_cred; 2531 } else if (r == 0) 2532 vput(nvp); 2533 } 2534 2535 /* 2536 * If the reply is likely to exceed MCLBYTES and the reply will 2537 * not be saved, use ext_pgs mbufs for TLS. 2538 * It is difficult to predict how large each entry will be and 2539 * how many entries have been read, so just assume the directory 2540 * entries grow by a factor of 4 when attributes are included. 2541 * For NFSv4.0, we do not know for sure if the reply will 2542 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2543 */ 2544 if (cnt > MCLBYTES && siz > MCLBYTES / 4 && 2545 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2546 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2547 nd->nd_flag |= ND_EXTPG; 2548 2549 /* 2550 * Save this position, in case there is an error before one entry 2551 * is created. 2552 */ 2553 mb0 = nd->nd_mb; 2554 bpos0 = nd->nd_bpos; 2555 bextpg0 = nd->nd_bextpg; 2556 bextpgsiz0 = nd->nd_bextpgsiz; 2557 2558 /* 2559 * Fill in the first part of the reply. 2560 * dirlen is the reply length in bytes and cannot exceed cnt. 2561 * (Include the two booleans at the end of the reply in dirlen now, 2562 * so we recognize when we have exceeded cnt.) 2563 */ 2564 if (nd->nd_flag & ND_NFSV3) { 2565 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2566 nfsrv_postopattr(nd, getret, &at); 2567 } else { 2568 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2569 } 2570 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2571 txdr_hyper(at.na_filerev, tl); 2572 2573 /* 2574 * Save this position, in case there is an empty reply needed. 2575 */ 2576 mb1 = nd->nd_mb; 2577 bpos1 = nd->nd_bpos; 2578 bextpg1 = nd->nd_bextpg; 2579 bextpgsiz1 = nd->nd_bextpgsiz; 2580 2581 /* Loop through the records and build reply */ 2582 entrycnt = 0; 2583 while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2584 nlen = dp->d_namlen; 2585 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2586 nlen <= NFS_MAXNAMLEN && 2587 ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2588 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2589 || (nlen == 1 && dp->d_name[0] != '.'))) { 2590 /* 2591 * Save the current position in the reply, in case 2592 * this entry exceeds cnt. 2593 */ 2594 mb1 = nd->nd_mb; 2595 bpos1 = nd->nd_bpos; 2596 bextpg1 = nd->nd_bextpg; 2597 bextpgsiz1 = nd->nd_bextpgsiz; 2598 2599 /* 2600 * For readdir_and_lookup get the vnode using 2601 * the file number. 2602 */ 2603 nvp = NULL; 2604 refp = NULL; 2605 r = 0; 2606 at_root = 0; 2607 needs_unbusy = 0; 2608 new_mp = mp; 2609 mounted_on_fileno = (uint64_t)dp->d_fileno; 2610 if ((nd->nd_flag & ND_NFSV3) || 2611 NFSNONZERO_ATTRBIT(&savbits)) { 2612 if (nd->nd_flag & ND_NFSV4) 2613 refp = nfsv4root_getreferral(NULL, 2614 vp, dp->d_fileno); 2615 if (refp == NULL) { 2616 if (usevget) 2617 r = VFS_VGET(mp, dp->d_fileno, 2618 LK_SHARED, &nvp); 2619 else 2620 r = EOPNOTSUPP; 2621 if (r == EOPNOTSUPP) { 2622 if (usevget) { 2623 usevget = 0; 2624 cn.cn_nameiop = LOOKUP; 2625 cn.cn_lkflags = 2626 LK_SHARED | 2627 LK_RETRY; 2628 cn.cn_cred = 2629 nd->nd_cred; 2630 } 2631 cn.cn_nameptr = dp->d_name; 2632 cn.cn_namelen = nlen; 2633 cn.cn_flags = ISLASTCN | 2634 NOFOLLOW | LOCKLEAF; 2635 if (nlen == 2 && 2636 dp->d_name[0] == '.' && 2637 dp->d_name[1] == '.') 2638 cn.cn_flags |= 2639 ISDOTDOT; 2640 if (NFSVOPLOCK(vp, LK_SHARED) 2641 != 0) { 2642 nd->nd_repstat = EPERM; 2643 break; 2644 } 2645 if ((vp->v_vflag & VV_ROOT) != 0 2646 && (cn.cn_flags & ISDOTDOT) 2647 != 0) { 2648 vref(vp); 2649 nvp = vp; 2650 r = 0; 2651 } else { 2652 r = VOP_LOOKUP(vp, &nvp, 2653 &cn); 2654 if (vp != nvp) 2655 NFSVOPUNLOCK(vp); 2656 } 2657 } 2658 2659 /* 2660 * For NFSv4, check to see if nvp is 2661 * a mount point and get the mount 2662 * point vnode, as required. 2663 */ 2664 if (r == 0 && 2665 nfsrv_enable_crossmntpt != 0 && 2666 (nd->nd_flag & ND_NFSV4) != 0 && 2667 nvp->v_type == VDIR && 2668 nvp->v_mountedhere != NULL) { 2669 new_mp = nvp->v_mountedhere; 2670 r = vfs_busy(new_mp, 0); 2671 vput(nvp); 2672 nvp = NULL; 2673 if (r == 0) { 2674 r = VFS_ROOT(new_mp, 2675 LK_SHARED, &nvp); 2676 needs_unbusy = 1; 2677 if (r == 0) 2678 at_root = 1; 2679 } 2680 } 2681 } 2682 2683 /* 2684 * If we failed to look up the entry, then it 2685 * has become invalid, most likely removed. 2686 */ 2687 if (r != 0) { 2688 if (needs_unbusy) 2689 vfs_unbusy(new_mp); 2690 goto invalid; 2691 } 2692 KASSERT(refp != NULL || nvp != NULL, 2693 ("%s: undetected lookup error", __func__)); 2694 2695 if (refp == NULL && 2696 ((nd->nd_flag & ND_NFSV3) || 2697 NFSNONZERO_ATTRBIT(&attrbits))) { 2698 r = nfsvno_getfh(nvp, &nfh, p); 2699 if (!r) 2700 r = nfsvno_getattr(nvp, nvap, nd, p, 2701 1, &attrbits); 2702 if (r == 0 && is_zfs == 1 && 2703 nfsrv_enable_crossmntpt != 0 && 2704 (nd->nd_flag & ND_NFSV4) != 0 && 2705 nvp->v_type == VDIR && 2706 vp->v_mount != nvp->v_mount) { 2707 /* 2708 * For a ZFS snapshot, there is a 2709 * pseudo mount that does not set 2710 * v_mountedhere, so it needs to 2711 * be detected via a different 2712 * mount structure. 2713 */ 2714 at_root = 1; 2715 if (new_mp == mp) 2716 new_mp = nvp->v_mount; 2717 } 2718 } 2719 2720 /* 2721 * If we failed to get attributes of the entry, 2722 * then just skip it for NFSv3 (the traditional 2723 * behavior in the old NFS server). 2724 * For NFSv4 the behavior is controlled by 2725 * RDATTRERROR: we either ignore the error or 2726 * fail the request. 2727 * The exception is EOPNOTSUPP, which can be 2728 * returned by nfsvno_getfh() for certain 2729 * file systems, such as devfs. This indicates 2730 * that the file system cannot be exported, 2731 * so just skip over the entry. 2732 * Note that RDATTRERROR is never set for NFSv3. 2733 */ 2734 if (r != 0) { 2735 if (!NFSISSET_ATTRBIT(&attrbits, 2736 NFSATTRBIT_RDATTRERROR) || 2737 r == EOPNOTSUPP) { 2738 vput(nvp); 2739 if (needs_unbusy != 0) 2740 vfs_unbusy(new_mp); 2741 if ((nd->nd_flag & ND_NFSV3) || 2742 r == EOPNOTSUPP) 2743 goto invalid; 2744 nd->nd_repstat = r; 2745 break; 2746 } 2747 } 2748 } 2749 2750 /* 2751 * Build the directory record xdr 2752 */ 2753 if (nd->nd_flag & ND_NFSV3) { 2754 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2755 *tl++ = newnfs_true; 2756 *tl++ = 0; 2757 *tl = txdr_unsigned(dp->d_fileno); 2758 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2759 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2760 txdr_hyper(*cookiep, tl); 2761 nfsrv_postopattr(nd, 0, nvap); 2762 dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2763 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2764 if (nvp != NULL) 2765 vput(nvp); 2766 } else { 2767 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2768 *tl++ = newnfs_true; 2769 txdr_hyper(*cookiep, tl); 2770 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2771 if (nvp != NULL) { 2772 supports_nfsv4acls = 2773 nfs_supportsnfsv4acls(nvp); 2774 NFSVOPUNLOCK(nvp); 2775 } else 2776 supports_nfsv4acls = 0; 2777 if (refp != NULL) { 2778 dirlen += nfsrv_putreferralattr(nd, 2779 &savbits, refp, 0, 2780 &nd->nd_repstat); 2781 if (nd->nd_repstat) { 2782 if (nvp != NULL) 2783 vrele(nvp); 2784 if (needs_unbusy != 0) 2785 vfs_unbusy(new_mp); 2786 break; 2787 } 2788 } else if (r) { 2789 dirlen += nfsvno_fillattr(nd, new_mp, 2790 nvp, nvap, &nfh, r, &rderrbits, 2791 nd->nd_cred, p, isdgram, 0, 2792 supports_nfsv4acls, at_root, 2793 mounted_on_fileno); 2794 } else { 2795 dirlen += nfsvno_fillattr(nd, new_mp, 2796 nvp, nvap, &nfh, r, &attrbits, 2797 nd->nd_cred, p, isdgram, 0, 2798 supports_nfsv4acls, at_root, 2799 mounted_on_fileno); 2800 } 2801 if (nvp != NULL) 2802 vrele(nvp); 2803 dirlen += (3 * NFSX_UNSIGNED); 2804 } 2805 if (needs_unbusy != 0) 2806 vfs_unbusy(new_mp); 2807 if (dirlen <= cnt) 2808 entrycnt++; 2809 } 2810 invalid: 2811 cpos += dp->d_reclen; 2812 dp = (struct dirent *)cpos; 2813 cookiep++; 2814 ncookies--; 2815 } 2816 vrele(vp); 2817 vfs_unbusy(mp); 2818 2819 /* 2820 * If dirlen > cnt, we must strip off the last entry. If that 2821 * results in an empty reply, report NFSERR_TOOSMALL. 2822 */ 2823 if (dirlen > cnt || nd->nd_repstat) { 2824 if (!nd->nd_repstat && entrycnt == 0) 2825 nd->nd_repstat = NFSERR_TOOSMALL; 2826 if (nd->nd_repstat) { 2827 nfsm_trimtrailing(nd, mb0, bpos0, bextpg0, bextpgsiz0); 2828 if (nd->nd_flag & ND_NFSV3) 2829 nfsrv_postopattr(nd, getret, &at); 2830 } else 2831 nfsm_trimtrailing(nd, mb1, bpos1, bextpg1, bextpgsiz1); 2832 eofflag = 0; 2833 } else if (cpos < cend) 2834 eofflag = 0; 2835 if (!nd->nd_repstat) { 2836 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2837 *tl++ = newnfs_false; 2838 if (eofflag) 2839 *tl = newnfs_true; 2840 else 2841 *tl = newnfs_false; 2842 } 2843 free(cookies, M_TEMP); 2844 free(rbuf, M_TEMP); 2845 2846 out: 2847 NFSEXITCODE2(0, nd); 2848 return (0); 2849 nfsmout: 2850 vput(vp); 2851 NFSEXITCODE2(error, nd); 2852 return (error); 2853 } 2854 2855 /* 2856 * Get the settable attributes out of the mbuf list. 2857 * (Return 0 or EBADRPC) 2858 */ 2859 int 2860 nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 2861 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2862 { 2863 u_int32_t *tl; 2864 struct nfsv2_sattr *sp; 2865 int error = 0, toclient = 0; 2866 2867 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2868 case ND_NFSV2: 2869 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2870 /* 2871 * Some old clients didn't fill in the high order 16bits. 2872 * --> check the low order 2 bytes for 0xffff 2873 */ 2874 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2875 nvap->na_mode = nfstov_mode(sp->sa_mode); 2876 if (sp->sa_uid != newnfs_xdrneg1) 2877 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2878 if (sp->sa_gid != newnfs_xdrneg1) 2879 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2880 if (sp->sa_size != newnfs_xdrneg1) 2881 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2882 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2883 #ifdef notyet 2884 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2885 #else 2886 nvap->na_atime.tv_sec = 2887 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2888 nvap->na_atime.tv_nsec = 0; 2889 #endif 2890 } 2891 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2892 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2893 break; 2894 case ND_NFSV3: 2895 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2896 if (*tl == newnfs_true) { 2897 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2898 nvap->na_mode = nfstov_mode(*tl); 2899 } 2900 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2901 if (*tl == newnfs_true) { 2902 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2903 nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2904 } 2905 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2906 if (*tl == newnfs_true) { 2907 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2908 nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2909 } 2910 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2911 if (*tl == newnfs_true) { 2912 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2913 nvap->na_size = fxdr_hyper(tl); 2914 } 2915 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2916 switch (fxdr_unsigned(int, *tl)) { 2917 case NFSV3SATTRTIME_TOCLIENT: 2918 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2919 fxdr_nfsv3time(tl, &nvap->na_atime); 2920 toclient = 1; 2921 break; 2922 case NFSV3SATTRTIME_TOSERVER: 2923 vfs_timestamp(&nvap->na_atime); 2924 nvap->na_vaflags |= VA_UTIMES_NULL; 2925 break; 2926 } 2927 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2928 switch (fxdr_unsigned(int, *tl)) { 2929 case NFSV3SATTRTIME_TOCLIENT: 2930 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2931 fxdr_nfsv3time(tl, &nvap->na_mtime); 2932 nvap->na_vaflags &= ~VA_UTIMES_NULL; 2933 break; 2934 case NFSV3SATTRTIME_TOSERVER: 2935 vfs_timestamp(&nvap->na_mtime); 2936 if (!toclient) 2937 nvap->na_vaflags |= VA_UTIMES_NULL; 2938 break; 2939 } 2940 break; 2941 case ND_NFSV4: 2942 error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p); 2943 } 2944 nfsmout: 2945 NFSEXITCODE2(error, nd); 2946 return (error); 2947 } 2948 2949 /* 2950 * Handle the setable attributes for V4. 2951 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2952 */ 2953 int 2954 nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 2955 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2956 { 2957 u_int32_t *tl; 2958 int attrsum = 0; 2959 int i, j; 2960 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2961 int moderet, toclient = 0; 2962 u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2963 uid_t uid; 2964 gid_t gid; 2965 u_short mode, mask; /* Same type as va_mode. */ 2966 struct vattr va; 2967 2968 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2969 if (error) 2970 goto nfsmout; 2971 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2972 attrsize = fxdr_unsigned(int, *tl); 2973 2974 /* 2975 * Loop around getting the setable attributes. If an unsupported 2976 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2977 */ 2978 if (retnotsup) { 2979 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2980 bitpos = NFSATTRBIT_MAX; 2981 } else { 2982 bitpos = 0; 2983 } 2984 moderet = 0; 2985 for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2986 if (attrsum > attrsize) { 2987 error = NFSERR_BADXDR; 2988 goto nfsmout; 2989 } 2990 if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2991 switch (bitpos) { 2992 case NFSATTRBIT_SIZE: 2993 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2994 if (vp != NULL && vp->v_type != VREG) { 2995 error = (vp->v_type == VDIR) ? NFSERR_ISDIR : 2996 NFSERR_INVAL; 2997 goto nfsmout; 2998 } 2999 nvap->na_size = fxdr_hyper(tl); 3000 attrsum += NFSX_HYPER; 3001 break; 3002 case NFSATTRBIT_ACL: 3003 error = nfsrv_dissectacl(nd, aclp, true, &aceerr, 3004 &aclsize, p); 3005 if (error) 3006 goto nfsmout; 3007 if (aceerr && !nd->nd_repstat) 3008 nd->nd_repstat = aceerr; 3009 attrsum += aclsize; 3010 break; 3011 case NFSATTRBIT_ARCHIVE: 3012 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3013 if (!nd->nd_repstat) 3014 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3015 attrsum += NFSX_UNSIGNED; 3016 break; 3017 case NFSATTRBIT_HIDDEN: 3018 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3019 if (!nd->nd_repstat) 3020 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3021 attrsum += NFSX_UNSIGNED; 3022 break; 3023 case NFSATTRBIT_MIMETYPE: 3024 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3025 i = fxdr_unsigned(int, *tl); 3026 error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 3027 if (error) 3028 goto nfsmout; 3029 if (!nd->nd_repstat) 3030 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3031 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 3032 break; 3033 case NFSATTRBIT_MODE: 3034 moderet = NFSERR_INVAL; /* Can't do MODESETMASKED. */ 3035 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3036 nvap->na_mode = nfstov_mode(*tl); 3037 attrsum += NFSX_UNSIGNED; 3038 break; 3039 case NFSATTRBIT_OWNER: 3040 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3041 j = fxdr_unsigned(int, *tl); 3042 if (j < 0) { 3043 error = NFSERR_BADXDR; 3044 goto nfsmout; 3045 } 3046 if (j > NFSV4_SMALLSTR) 3047 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3048 else 3049 cp = namestr; 3050 error = nfsrv_mtostr(nd, cp, j); 3051 if (error) { 3052 if (j > NFSV4_SMALLSTR) 3053 free(cp, M_NFSSTRING); 3054 goto nfsmout; 3055 } 3056 if (!nd->nd_repstat) { 3057 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, 3058 &uid); 3059 if (!nd->nd_repstat) 3060 nvap->na_uid = uid; 3061 } 3062 if (j > NFSV4_SMALLSTR) 3063 free(cp, M_NFSSTRING); 3064 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3065 break; 3066 case NFSATTRBIT_OWNERGROUP: 3067 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3068 j = fxdr_unsigned(int, *tl); 3069 if (j < 0) { 3070 error = NFSERR_BADXDR; 3071 goto nfsmout; 3072 } 3073 if (j > NFSV4_SMALLSTR) 3074 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3075 else 3076 cp = namestr; 3077 error = nfsrv_mtostr(nd, cp, j); 3078 if (error) { 3079 if (j > NFSV4_SMALLSTR) 3080 free(cp, M_NFSSTRING); 3081 goto nfsmout; 3082 } 3083 if (!nd->nd_repstat) { 3084 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, 3085 &gid); 3086 if (!nd->nd_repstat) 3087 nvap->na_gid = gid; 3088 } 3089 if (j > NFSV4_SMALLSTR) 3090 free(cp, M_NFSSTRING); 3091 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3092 break; 3093 case NFSATTRBIT_SYSTEM: 3094 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3095 if (!nd->nd_repstat) 3096 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3097 attrsum += NFSX_UNSIGNED; 3098 break; 3099 case NFSATTRBIT_TIMEACCESSSET: 3100 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3101 attrsum += NFSX_UNSIGNED; 3102 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3103 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3104 fxdr_nfsv4time(tl, &nvap->na_atime); 3105 toclient = 1; 3106 attrsum += NFSX_V4TIME; 3107 } else { 3108 vfs_timestamp(&nvap->na_atime); 3109 nvap->na_vaflags |= VA_UTIMES_NULL; 3110 } 3111 break; 3112 case NFSATTRBIT_TIMEBACKUP: 3113 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3114 if (!nd->nd_repstat) 3115 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3116 attrsum += NFSX_V4TIME; 3117 break; 3118 case NFSATTRBIT_TIMECREATE: 3119 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3120 fxdr_nfsv4time(tl, &nvap->na_btime); 3121 attrsum += NFSX_V4TIME; 3122 break; 3123 case NFSATTRBIT_TIMEMODIFYSET: 3124 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3125 attrsum += NFSX_UNSIGNED; 3126 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3127 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3128 fxdr_nfsv4time(tl, &nvap->na_mtime); 3129 nvap->na_vaflags &= ~VA_UTIMES_NULL; 3130 attrsum += NFSX_V4TIME; 3131 } else { 3132 vfs_timestamp(&nvap->na_mtime); 3133 if (!toclient) 3134 nvap->na_vaflags |= VA_UTIMES_NULL; 3135 } 3136 break; 3137 case NFSATTRBIT_MODESETMASKED: 3138 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 3139 mode = fxdr_unsigned(u_short, *tl++); 3140 mask = fxdr_unsigned(u_short, *tl); 3141 /* 3142 * vp == NULL implies an Open/Create operation. 3143 * This attribute can only be used for Setattr and 3144 * only for NFSv4.1 or higher. 3145 * If moderet != 0, a mode attribute has also been 3146 * specified and this attribute cannot be done in the 3147 * same Setattr operation. 3148 */ 3149 if ((nd->nd_flag & ND_NFSV41) == 0) 3150 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3151 else if ((mode & ~07777) != 0 || (mask & ~07777) != 0 || 3152 vp == NULL) 3153 nd->nd_repstat = NFSERR_INVAL; 3154 else if (moderet == 0) 3155 moderet = VOP_GETATTR(vp, &va, nd->nd_cred); 3156 if (moderet == 0) 3157 nvap->na_mode = (mode & mask) | 3158 (va.va_mode & ~mask); 3159 else 3160 nd->nd_repstat = moderet; 3161 attrsum += 2 * NFSX_UNSIGNED; 3162 break; 3163 default: 3164 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3165 /* 3166 * set bitpos so we drop out of the loop. 3167 */ 3168 bitpos = NFSATTRBIT_MAX; 3169 break; 3170 } 3171 } 3172 3173 /* 3174 * some clients pad the attrlist, so we need to skip over the 3175 * padding. 3176 */ 3177 if (attrsum > attrsize) { 3178 error = NFSERR_BADXDR; 3179 } else { 3180 attrsize = NFSM_RNDUP(attrsize); 3181 if (attrsum < attrsize) 3182 error = nfsm_advance(nd, attrsize - attrsum, -1); 3183 } 3184 nfsmout: 3185 NFSEXITCODE2(error, nd); 3186 return (error); 3187 } 3188 3189 /* 3190 * Check/setup export credentials. 3191 */ 3192 int 3193 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 3194 struct ucred *credanon, bool testsec) 3195 { 3196 int error; 3197 3198 /* 3199 * Check/setup credentials. 3200 */ 3201 if (nd->nd_flag & ND_GSS) 3202 exp->nes_exflag &= ~MNT_EXPORTANON; 3203 3204 /* 3205 * Check to see if the operation is allowed for this security flavor. 3206 */ 3207 error = 0; 3208 if (testsec) { 3209 error = nfsvno_testexp(nd, exp); 3210 if (error != 0) 3211 goto out; 3212 } 3213 3214 /* 3215 * Check to see if the file system is exported V4 only. 3216 */ 3217 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 3218 error = NFSERR_PROGNOTV4; 3219 goto out; 3220 } 3221 3222 /* 3223 * Now, map the user credentials. 3224 * (Note that ND_AUTHNONE will only be set for an NFSv3 3225 * Fsinfo RPC. If set for anything else, this code might need 3226 * to change.) 3227 */ 3228 if (NFSVNO_EXPORTED(exp)) { 3229 if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) || 3230 NFSVNO_EXPORTANON(exp) || 3231 (nd->nd_flag & ND_AUTHNONE) != 0) { 3232 nd->nd_cred->cr_uid = credanon->cr_uid; 3233 nd->nd_cred->cr_gid = credanon->cr_gid; 3234 crsetgroups(nd->nd_cred, credanon->cr_ngroups, 3235 credanon->cr_groups); 3236 } else if ((nd->nd_flag & ND_GSS) == 0) { 3237 /* 3238 * If using AUTH_SYS, call nfsrv_getgrpscred() to see 3239 * if there is a replacement credential with a group 3240 * list set up by "nfsuserd -manage-gids". 3241 * If there is no replacement, nfsrv_getgrpscred() 3242 * simply returns its argument. 3243 */ 3244 nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred); 3245 } 3246 } 3247 3248 out: 3249 NFSEXITCODE2(error, nd); 3250 return (error); 3251 } 3252 3253 /* 3254 * Check exports. 3255 */ 3256 int 3257 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 3258 struct ucred **credp) 3259 { 3260 int error; 3261 3262 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3263 &exp->nes_numsecflavor, exp->nes_secflavors); 3264 if (error) { 3265 if (NFSD_VNET(nfs_rootfhset)) { 3266 exp->nes_exflag = 0; 3267 exp->nes_numsecflavor = 0; 3268 error = 0; 3269 } 3270 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3271 MAXSECFLAVORS) { 3272 printf("nfsvno_checkexp: numsecflavors out of range\n"); 3273 exp->nes_numsecflavor = 0; 3274 error = EACCES; 3275 } 3276 NFSEXITCODE(error); 3277 return (error); 3278 } 3279 3280 /* 3281 * Get a vnode for a file handle and export stuff. 3282 */ 3283 int 3284 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 3285 int lktype, struct vnode **vpp, struct nfsexstuff *exp, 3286 struct ucred **credp) 3287 { 3288 int error; 3289 3290 *credp = NULL; 3291 exp->nes_numsecflavor = 0; 3292 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 3293 if (error != 0) 3294 /* Make sure the server replies ESTALE to the client. */ 3295 error = ESTALE; 3296 if (nam && !error) { 3297 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3298 &exp->nes_numsecflavor, exp->nes_secflavors); 3299 if (error) { 3300 if (NFSD_VNET(nfs_rootfhset)) { 3301 exp->nes_exflag = 0; 3302 exp->nes_numsecflavor = 0; 3303 error = 0; 3304 } else { 3305 vput(*vpp); 3306 } 3307 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3308 MAXSECFLAVORS) { 3309 printf("nfsvno_fhtovp: numsecflavors out of range\n"); 3310 exp->nes_numsecflavor = 0; 3311 error = EACCES; 3312 vput(*vpp); 3313 } 3314 } 3315 NFSEXITCODE(error); 3316 return (error); 3317 } 3318 3319 /* 3320 * nfsd_fhtovp() - convert a fh to a vnode ptr 3321 * - look up fsid in mount list (if not found ret error) 3322 * - get vp and export rights by calling nfsvno_fhtovp() 3323 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 3324 * for AUTH_SYS 3325 * - if mpp != NULL, return the mount point so that it can 3326 * be used for vn_finished_write() by the caller 3327 */ 3328 void 3329 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 3330 struct vnode **vpp, struct nfsexstuff *exp, 3331 struct mount **mpp, int startwrite, int nextop) 3332 { 3333 struct mount *mp, *mpw; 3334 struct ucred *credanon; 3335 fhandle_t *fhp; 3336 int error; 3337 3338 if (mpp != NULL) 3339 *mpp = NULL; 3340 *vpp = NULL; 3341 fhp = (fhandle_t *)nfp->nfsrvfh_data; 3342 mp = vfs_busyfs(&fhp->fh_fsid); 3343 if (mp == NULL) { 3344 nd->nd_repstat = ESTALE; 3345 goto out; 3346 } 3347 3348 if (startwrite) { 3349 mpw = mp; 3350 error = vn_start_write(NULL, &mpw, V_WAIT); 3351 if (error != 0) { 3352 mpw = NULL; 3353 vfs_unbusy(mp); 3354 nd->nd_repstat = ESTALE; 3355 goto out; 3356 } 3357 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 3358 lktype = LK_EXCLUSIVE; 3359 } else 3360 mpw = NULL; 3361 3362 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 3363 &credanon); 3364 vfs_unbusy(mp); 3365 3366 /* 3367 * For NFSv4 without a pseudo root fs, unexported file handles 3368 * can be returned, so that Lookup works everywhere. 3369 */ 3370 if (!nd->nd_repstat && exp->nes_exflag == 0 && 3371 !(nd->nd_flag & ND_NFSV4)) { 3372 vput(*vpp); 3373 *vpp = NULL; 3374 nd->nd_repstat = EACCES; 3375 } 3376 3377 /* 3378 * Personally, I've never seen any point in requiring a 3379 * reserved port#, since only in the rare case where the 3380 * clients are all boxes with secure system privileges, 3381 * does it provide any enhanced security, but... some people 3382 * believe it to be useful and keep putting this code back in. 3383 * (There is also some "security checker" out there that 3384 * complains if the nfs server doesn't enforce this.) 3385 * However, note the following: 3386 * RFC3530 (NFSv4) specifies that a reserved port# not be 3387 * required. 3388 * RFC2623 recommends that, if a reserved port# is checked for, 3389 * that there be a way to turn that off--> ifdef'd. 3390 */ 3391 #ifdef NFS_REQRSVPORT 3392 if (!nd->nd_repstat) { 3393 struct sockaddr_in *saddr; 3394 struct sockaddr_in6 *saddr6; 3395 3396 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 3397 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 3398 if (!(nd->nd_flag & ND_NFSV4) && 3399 ((saddr->sin_family == AF_INET && 3400 ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 3401 (saddr6->sin6_family == AF_INET6 && 3402 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 3403 vput(*vpp); 3404 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 3405 } 3406 } 3407 #endif /* NFS_REQRSVPORT */ 3408 3409 /* 3410 * Check/setup credentials. 3411 */ 3412 if (!nd->nd_repstat) { 3413 nd->nd_saveduid = nd->nd_cred->cr_uid; 3414 nd->nd_repstat = nfsd_excred(nd, exp, credanon, 3415 nfsrv_checkwrongsec(nd, nextop, (*vpp)->v_type)); 3416 if (nd->nd_repstat) 3417 vput(*vpp); 3418 } 3419 if (credanon != NULL) 3420 crfree(credanon); 3421 if (nd->nd_repstat) { 3422 vn_finished_write(mpw); 3423 *vpp = NULL; 3424 } else if (mpp != NULL) { 3425 *mpp = mpw; 3426 } 3427 3428 out: 3429 NFSEXITCODE2(0, nd); 3430 } 3431 3432 /* 3433 * glue for fp. 3434 */ 3435 static int 3436 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 3437 { 3438 struct filedesc *fdp; 3439 struct file *fp; 3440 int error = 0; 3441 3442 fdp = p->td_proc->p_fd; 3443 if (fd < 0 || fd >= fdp->fd_nfiles || 3444 (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 3445 error = EBADF; 3446 goto out; 3447 } 3448 *fpp = fp; 3449 3450 out: 3451 NFSEXITCODE(error); 3452 return (error); 3453 } 3454 3455 /* 3456 * Called from nfssvc() to update the exports list. Just call 3457 * vfs_export(). This has to be done, since the v4 root fake fs isn't 3458 * in the mount list. 3459 */ 3460 int 3461 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 3462 { 3463 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 3464 int error = 0; 3465 struct nameidata nd; 3466 fhandle_t fh; 3467 3468 error = vfs_export(NFSD_VNET(nfsv4root_mnt), &nfsexargp->export); 3469 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 3470 NFSD_VNET(nfs_rootfhset) = 0; 3471 else if (error == 0) { 3472 if (nfsexargp->fspec == NULL) { 3473 error = EPERM; 3474 goto out; 3475 } 3476 /* 3477 * If fspec != NULL, this is the v4root path. 3478 */ 3479 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, nfsexargp->fspec); 3480 if ((error = namei(&nd)) != 0) 3481 goto out; 3482 error = nfsvno_getfh(nd.ni_vp, &fh, p); 3483 vrele(nd.ni_vp); 3484 if (!error) { 3485 NFSD_VNET(nfs_rootfh).nfsrvfh_len = NFSX_MYFH; 3486 NFSBCOPY((caddr_t)&fh, 3487 NFSD_VNET(nfs_rootfh).nfsrvfh_data, 3488 sizeof (fhandle_t)); 3489 NFSD_VNET(nfs_rootfhset) = 1; 3490 } 3491 } 3492 3493 out: 3494 NFSEXITCODE(error); 3495 return (error); 3496 } 3497 3498 /* 3499 * This function needs to test to see if the system is near its limit 3500 * for memory allocation via malloc() or mget() and return True iff 3501 * either of these resources are near their limit. 3502 * XXX (For now, this is just a stub.) 3503 */ 3504 int nfsrv_testmalloclimit = 0; 3505 int 3506 nfsrv_mallocmget_limit(void) 3507 { 3508 static int printmesg = 0; 3509 static int testval = 1; 3510 3511 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 3512 if ((printmesg++ % 100) == 0) 3513 printf("nfsd: malloc/mget near limit\n"); 3514 return (1); 3515 } 3516 return (0); 3517 } 3518 3519 /* 3520 * BSD specific initialization of a mount point. 3521 */ 3522 void 3523 nfsd_mntinit(void) 3524 { 3525 3526 NFSD_LOCK(); 3527 if (NFSD_VNET(nfsrv_mntinited)) { 3528 NFSD_UNLOCK(); 3529 return; 3530 } 3531 NFSD_VNET(nfsrv_mntinited) = true; 3532 nfsrvd_init(0); 3533 NFSD_UNLOCK(); 3534 3535 NFSD_VNET(nfsv4root_mnt) = malloc(sizeof(struct mount), M_TEMP, 3536 M_WAITOK | M_ZERO); 3537 NFSD_VNET(nfsv4root_mnt)->mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 3538 mtx_init(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx, "nfs4mnt", NULL, MTX_DEF); 3539 lockinit(&NFSD_VNET(nfsv4root_mnt)->mnt_explock, PVFS, "explock", 0, 0); 3540 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelist); 3541 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelist); 3542 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 3543 TAILQ_INIT(&NFSD_VNET(nfsv4root_opt)); 3544 TAILQ_INIT(&NFSD_VNET(nfsv4root_newopt)); 3545 NFSD_VNET(nfsv4root_mnt)->mnt_opt = &NFSD_VNET(nfsv4root_opt); 3546 NFSD_VNET(nfsv4root_mnt)->mnt_optnew = &NFSD_VNET(nfsv4root_newopt); 3547 NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelistsize = 0; 3548 NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelistsize = 0; 3549 callout_init(&NFSD_VNET(nfsd_callout), 1); 3550 3551 nfsrvd_initcache(); 3552 nfsd_init(); 3553 } 3554 3555 static void 3556 nfsd_timer(void *arg) 3557 { 3558 struct vnet *vnetp; 3559 3560 vnetp = (struct vnet *)arg; 3561 NFSD_CURVNET_SET_QUIET(vnetp); 3562 nfsrv_servertimer(vnetp); 3563 callout_reset_sbt(&NFSD_VNET(nfsd_callout), SBT_1S, SBT_1S, nfsd_timer, 3564 arg, 0); 3565 NFSD_CURVNET_RESTORE(); 3566 } 3567 3568 /* 3569 * Get a vnode for a file handle, without checking exports, etc. 3570 */ 3571 struct vnode * 3572 nfsvno_getvp(fhandle_t *fhp) 3573 { 3574 struct mount *mp; 3575 struct vnode *vp; 3576 int error; 3577 3578 mp = vfs_busyfs(&fhp->fh_fsid); 3579 if (mp == NULL) 3580 return (NULL); 3581 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 3582 vfs_unbusy(mp); 3583 if (error) 3584 return (NULL); 3585 return (vp); 3586 } 3587 3588 /* 3589 * Do a local VOP_ADVLOCK(). 3590 */ 3591 int 3592 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 3593 u_int64_t end, struct thread *td) 3594 { 3595 int error = 0; 3596 struct flock fl; 3597 u_int64_t tlen; 3598 3599 if (nfsrv_dolocallocks == 0) 3600 goto out; 3601 ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked"); 3602 3603 fl.l_whence = SEEK_SET; 3604 fl.l_type = ftype; 3605 fl.l_start = (off_t)first; 3606 if (end == NFS64BITSSET) { 3607 fl.l_len = 0; 3608 } else { 3609 tlen = end - first; 3610 fl.l_len = (off_t)tlen; 3611 } 3612 /* 3613 * For FreeBSD8, the l_pid and l_sysid must be set to the same 3614 * values for all calls, so that all locks will be held by the 3615 * nfsd server. (The nfsd server handles conflicts between the 3616 * various clients.) 3617 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 3618 * bytes, so it can't be put in l_sysid. 3619 */ 3620 if (nfsv4_sysid == 0) 3621 nfsv4_sysid = nlm_acquire_next_sysid(); 3622 fl.l_pid = (pid_t)0; 3623 fl.l_sysid = (int)nfsv4_sysid; 3624 3625 if (ftype == F_UNLCK) 3626 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3627 (F_POSIX | F_REMOTE)); 3628 else 3629 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3630 (F_POSIX | F_REMOTE)); 3631 3632 out: 3633 NFSEXITCODE(error); 3634 return (error); 3635 } 3636 3637 /* 3638 * Check the nfsv4 root exports. 3639 */ 3640 int 3641 nfsvno_v4rootexport(struct nfsrv_descript *nd) 3642 { 3643 struct ucred *credanon; 3644 int error = 0, numsecflavor, secflavors[MAXSECFLAVORS], i; 3645 uint64_t exflags; 3646 3647 error = vfs_stdcheckexp(NFSD_VNET(nfsv4root_mnt), nd->nd_nam, &exflags, 3648 &credanon, &numsecflavor, secflavors); 3649 if (error) { 3650 error = NFSERR_PROGUNAVAIL; 3651 goto out; 3652 } 3653 if (credanon != NULL) 3654 crfree(credanon); 3655 for (i = 0; i < numsecflavor; i++) { 3656 if (secflavors[i] == AUTH_SYS) 3657 nd->nd_flag |= ND_EXAUTHSYS; 3658 else if (secflavors[i] == RPCSEC_GSS_KRB5) 3659 nd->nd_flag |= ND_EXGSS; 3660 else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3661 nd->nd_flag |= ND_EXGSSINTEGRITY; 3662 else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3663 nd->nd_flag |= ND_EXGSSPRIVACY; 3664 } 3665 3666 /* And set ND_EXxx flags for TLS. */ 3667 if ((exflags & MNT_EXTLS) != 0) { 3668 nd->nd_flag |= ND_EXTLS; 3669 if ((exflags & MNT_EXTLSCERT) != 0) 3670 nd->nd_flag |= ND_EXTLSCERT; 3671 if ((exflags & MNT_EXTLSCERTUSER) != 0) 3672 nd->nd_flag |= ND_EXTLSCERTUSER; 3673 } 3674 3675 out: 3676 NFSEXITCODE(error); 3677 return (error); 3678 } 3679 3680 /* 3681 * Nfs server pseudo system call for the nfsd's 3682 */ 3683 /* 3684 * MPSAFE 3685 */ 3686 static int 3687 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3688 { 3689 struct file *fp; 3690 struct nfsd_addsock_args sockarg; 3691 struct nfsd_nfsd_args nfsdarg; 3692 struct nfsd_nfsd_oargs onfsdarg; 3693 struct nfsd_pnfsd_args pnfsdarg; 3694 struct vnode *vp, *nvp, *curdvp; 3695 struct pnfsdsfile *pf; 3696 struct nfsdevice *ds, *fds; 3697 cap_rights_t rights; 3698 int buflen, error, ret; 3699 char *buf, *cp, *cp2, *cp3; 3700 char fname[PNFS_FILENAME_LEN + 1]; 3701 3702 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td)); 3703 if (uap->flag & NFSSVC_NFSDADDSOCK) { 3704 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3705 if (error) 3706 goto out; 3707 /* 3708 * Since we don't know what rights might be required, 3709 * pretend that we need them all. It is better to be too 3710 * careful than too reckless. 3711 */ 3712 error = fget(td, sockarg.sock, 3713 cap_rights_init_one(&rights, CAP_SOCK_SERVER), &fp); 3714 if (error != 0) 3715 goto out; 3716 if (fp->f_type != DTYPE_SOCKET) { 3717 fdrop(fp, td); 3718 error = EPERM; 3719 goto out; 3720 } 3721 error = nfsrvd_addsock(fp); 3722 fdrop(fp, td); 3723 } else if (uap->flag & NFSSVC_NFSDNFSD) { 3724 if (uap->argp == NULL) { 3725 error = EINVAL; 3726 goto out; 3727 } 3728 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 3729 error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg)); 3730 if (error == 0) { 3731 nfsdarg.principal = onfsdarg.principal; 3732 nfsdarg.minthreads = onfsdarg.minthreads; 3733 nfsdarg.maxthreads = onfsdarg.maxthreads; 3734 nfsdarg.version = 1; 3735 nfsdarg.addr = NULL; 3736 nfsdarg.addrlen = 0; 3737 nfsdarg.dnshost = NULL; 3738 nfsdarg.dnshostlen = 0; 3739 nfsdarg.dspath = NULL; 3740 nfsdarg.dspathlen = 0; 3741 nfsdarg.mdspath = NULL; 3742 nfsdarg.mdspathlen = 0; 3743 nfsdarg.mirrorcnt = 1; 3744 } 3745 } else 3746 error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg)); 3747 if (error) 3748 goto out; 3749 if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 && 3750 nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 && 3751 nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 && 3752 nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 && 3753 nfsdarg.mirrorcnt >= 1 && 3754 nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS && 3755 nfsdarg.addr != NULL && nfsdarg.dnshost != NULL && 3756 nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) { 3757 NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d" 3758 " mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen, 3759 nfsdarg.dspathlen, nfsdarg.dnshostlen, 3760 nfsdarg.mdspathlen, nfsdarg.mirrorcnt); 3761 cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK); 3762 error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen); 3763 if (error != 0) { 3764 free(cp, M_TEMP); 3765 goto out; 3766 } 3767 cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */ 3768 nfsdarg.addr = cp; 3769 cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK); 3770 error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen); 3771 if (error != 0) { 3772 free(nfsdarg.addr, M_TEMP); 3773 free(cp, M_TEMP); 3774 goto out; 3775 } 3776 cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */ 3777 nfsdarg.dnshost = cp; 3778 cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK); 3779 error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen); 3780 if (error != 0) { 3781 free(nfsdarg.addr, M_TEMP); 3782 free(nfsdarg.dnshost, M_TEMP); 3783 free(cp, M_TEMP); 3784 goto out; 3785 } 3786 cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */ 3787 nfsdarg.dspath = cp; 3788 cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK); 3789 error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen); 3790 if (error != 0) { 3791 free(nfsdarg.addr, M_TEMP); 3792 free(nfsdarg.dnshost, M_TEMP); 3793 free(nfsdarg.dspath, M_TEMP); 3794 free(cp, M_TEMP); 3795 goto out; 3796 } 3797 cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */ 3798 nfsdarg.mdspath = cp; 3799 } else { 3800 nfsdarg.addr = NULL; 3801 nfsdarg.addrlen = 0; 3802 nfsdarg.dnshost = NULL; 3803 nfsdarg.dnshostlen = 0; 3804 nfsdarg.dspath = NULL; 3805 nfsdarg.dspathlen = 0; 3806 nfsdarg.mdspath = NULL; 3807 nfsdarg.mdspathlen = 0; 3808 nfsdarg.mirrorcnt = 1; 3809 } 3810 nfsd_timer(NFSD_TD_TO_VNET(td)); 3811 error = nfsrvd_nfsd(td, &nfsdarg); 3812 callout_drain(&NFSD_VNET(nfsd_callout)); 3813 free(nfsdarg.addr, M_TEMP); 3814 free(nfsdarg.dnshost, M_TEMP); 3815 free(nfsdarg.dspath, M_TEMP); 3816 free(nfsdarg.mdspath, M_TEMP); 3817 } else if (uap->flag & NFSSVC_PNFSDS) { 3818 error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg)); 3819 if (error == 0 && (pnfsdarg.op == PNFSDOP_DELDSSERVER || 3820 pnfsdarg.op == PNFSDOP_FORCEDELDS)) { 3821 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3822 error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1, 3823 NULL); 3824 if (error == 0) 3825 error = nfsrv_deldsserver(pnfsdarg.op, cp, td); 3826 free(cp, M_TEMP); 3827 } else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) { 3828 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3829 buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS; 3830 buf = malloc(buflen, M_TEMP, M_WAITOK); 3831 error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1, 3832 NULL); 3833 NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error); 3834 if (error == 0 && pnfsdarg.dspath != NULL) { 3835 cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3836 error = copyinstr(pnfsdarg.dspath, cp2, 3837 PATH_MAX + 1, NULL); 3838 NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n", 3839 error); 3840 } else 3841 cp2 = NULL; 3842 if (error == 0 && pnfsdarg.curdspath != NULL) { 3843 cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3844 error = copyinstr(pnfsdarg.curdspath, cp3, 3845 PATH_MAX + 1, NULL); 3846 NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n", 3847 error); 3848 } else 3849 cp3 = NULL; 3850 curdvp = NULL; 3851 fds = NULL; 3852 if (error == 0) 3853 error = nfsrv_mdscopymr(cp, cp2, cp3, buf, 3854 &buflen, fname, td, &vp, &nvp, &pf, &ds, 3855 &fds); 3856 NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error); 3857 if (error == 0) { 3858 if (pf->dsf_dir >= nfsrv_dsdirsize) { 3859 printf("copymr: dsdir out of range\n"); 3860 pf->dsf_dir = 0; 3861 } 3862 NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen); 3863 error = nfsrv_copymr(vp, nvp, 3864 ds->nfsdev_dsdir[pf->dsf_dir], ds, pf, 3865 (struct pnfsdsfile *)buf, 3866 buflen / sizeof(*pf), td->td_ucred, td); 3867 vput(vp); 3868 vput(nvp); 3869 if (fds != NULL && error == 0) { 3870 curdvp = fds->nfsdev_dsdir[pf->dsf_dir]; 3871 ret = vn_lock(curdvp, LK_EXCLUSIVE); 3872 if (ret == 0) { 3873 nfsrv_dsremove(curdvp, fname, 3874 td->td_ucred, td); 3875 NFSVOPUNLOCK(curdvp); 3876 } 3877 } 3878 NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error); 3879 } 3880 free(cp, M_TEMP); 3881 free(cp2, M_TEMP); 3882 free(cp3, M_TEMP); 3883 free(buf, M_TEMP); 3884 } 3885 } else { 3886 error = nfssvc_srvcall(td, uap, td->td_ucred); 3887 } 3888 3889 out: 3890 NFSD_CURVNET_RESTORE(); 3891 NFSEXITCODE(error); 3892 return (error); 3893 } 3894 3895 static int 3896 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3897 { 3898 struct nfsex_args export; 3899 struct nfsex_oldargs oexp; 3900 struct file *fp = NULL; 3901 int stablefd, i, len; 3902 struct nfsd_clid adminrevoke; 3903 struct nfsd_dumplist dumplist; 3904 struct nfsd_dumpclients *dumpclients; 3905 struct nfsd_dumplocklist dumplocklist; 3906 struct nfsd_dumplocks *dumplocks; 3907 struct nameidata nd; 3908 vnode_t vp; 3909 int error = EINVAL, igotlock; 3910 struct proc *procp; 3911 gid_t *grps; 3912 3913 if (uap->flag & NFSSVC_PUBLICFH) { 3914 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3915 sizeof (fhandle_t)); 3916 error = copyin(uap->argp, 3917 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3918 if (!error) 3919 nfs_pubfhset = 1; 3920 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 3921 (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) { 3922 error = copyin(uap->argp,(caddr_t)&export, 3923 sizeof (struct nfsex_args)); 3924 if (!error) { 3925 grps = NULL; 3926 if (export.export.ex_ngroups > NGROUPS_MAX || 3927 export.export.ex_ngroups < 0) 3928 error = EINVAL; 3929 else if (export.export.ex_ngroups > 0) { 3930 grps = malloc(export.export.ex_ngroups * 3931 sizeof(gid_t), M_TEMP, M_WAITOK); 3932 error = copyin(export.export.ex_groups, grps, 3933 export.export.ex_ngroups * sizeof(gid_t)); 3934 export.export.ex_groups = grps; 3935 } else 3936 export.export.ex_groups = NULL; 3937 if (!error) 3938 error = nfsrv_v4rootexport(&export, cred, p); 3939 free(grps, M_TEMP); 3940 } 3941 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 3942 NFSSVC_V4ROOTEXPORT) { 3943 error = copyin(uap->argp,(caddr_t)&oexp, 3944 sizeof (struct nfsex_oldargs)); 3945 if (!error) { 3946 memset(&export.export, 0, sizeof(export.export)); 3947 export.export.ex_flags = (uint64_t)oexp.export.ex_flags; 3948 export.export.ex_root = oexp.export.ex_root; 3949 export.export.ex_uid = oexp.export.ex_anon.cr_uid; 3950 export.export.ex_ngroups = 3951 oexp.export.ex_anon.cr_ngroups; 3952 export.export.ex_groups = NULL; 3953 if (export.export.ex_ngroups > XU_NGROUPS || 3954 export.export.ex_ngroups < 0) 3955 error = EINVAL; 3956 else if (export.export.ex_ngroups > 0) { 3957 export.export.ex_groups = malloc( 3958 export.export.ex_ngroups * sizeof(gid_t), 3959 M_TEMP, M_WAITOK); 3960 for (i = 0; i < export.export.ex_ngroups; i++) 3961 export.export.ex_groups[i] = 3962 oexp.export.ex_anon.cr_groups[i]; 3963 } 3964 export.export.ex_addr = oexp.export.ex_addr; 3965 export.export.ex_addrlen = oexp.export.ex_addrlen; 3966 export.export.ex_mask = oexp.export.ex_mask; 3967 export.export.ex_masklen = oexp.export.ex_masklen; 3968 export.export.ex_indexfile = oexp.export.ex_indexfile; 3969 export.export.ex_numsecflavors = 3970 oexp.export.ex_numsecflavors; 3971 if (export.export.ex_numsecflavors >= MAXSECFLAVORS || 3972 export.export.ex_numsecflavors < 0) 3973 error = EINVAL; 3974 else { 3975 for (i = 0; i < export.export.ex_numsecflavors; 3976 i++) 3977 export.export.ex_secflavors[i] = 3978 oexp.export.ex_secflavors[i]; 3979 } 3980 export.fspec = oexp.fspec; 3981 if (error == 0) 3982 error = nfsrv_v4rootexport(&export, cred, p); 3983 free(export.export.ex_groups, M_TEMP); 3984 } 3985 } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3986 nfs_pubfhset = 0; 3987 error = 0; 3988 } else if (uap->flag & NFSSVC_STABLERESTART) { 3989 error = copyin(uap->argp, (caddr_t)&stablefd, 3990 sizeof (int)); 3991 if (!error) 3992 error = fp_getfvp(p, stablefd, &fp, &vp); 3993 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3994 error = EBADF; 3995 if (!error && NFSD_VNET(nfsrv_numnfsd) != 0) 3996 error = EPERM; 3997 if (!error) { 3998 NFSD_VNET(nfsrv_stablefirst).nsf_fp = fp; 3999 nfsrv_setupstable(p); 4000 } 4001 } else if (uap->flag & NFSSVC_ADMINREVOKE) { 4002 error = copyin(uap->argp, (caddr_t)&adminrevoke, 4003 sizeof (struct nfsd_clid)); 4004 if (!error) 4005 error = nfsrv_adminrevoke(&adminrevoke, p); 4006 } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 4007 error = copyin(uap->argp, (caddr_t)&dumplist, 4008 sizeof (struct nfsd_dumplist)); 4009 if (!error && (dumplist.ndl_size < 1 || 4010 dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 4011 error = EPERM; 4012 if (!error) { 4013 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 4014 dumpclients = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4015 nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 4016 error = copyout(dumpclients, dumplist.ndl_list, len); 4017 free(dumpclients, M_TEMP); 4018 } 4019 } else if (uap->flag & NFSSVC_DUMPLOCKS) { 4020 error = copyin(uap->argp, (caddr_t)&dumplocklist, 4021 sizeof (struct nfsd_dumplocklist)); 4022 if (!error && (dumplocklist.ndllck_size < 1 || 4023 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 4024 error = EPERM; 4025 if (!error) 4026 error = nfsrv_lookupfilename(&nd, 4027 dumplocklist.ndllck_fname, p); 4028 if (!error) { 4029 len = sizeof (struct nfsd_dumplocks) * 4030 dumplocklist.ndllck_size; 4031 dumplocks = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4032 nfsrv_dumplocks(nd.ni_vp, dumplocks, 4033 dumplocklist.ndllck_size, p); 4034 vput(nd.ni_vp); 4035 error = copyout(dumplocks, dumplocklist.ndllck_list, 4036 len); 4037 free(dumplocks, M_TEMP); 4038 } 4039 } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 4040 procp = p->td_proc; 4041 PROC_LOCK(procp); 4042 nfsd_master_pid = procp->p_pid; 4043 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 4044 nfsd_master_start = procp->p_stats->p_start; 4045 NFSD_VNET(nfsd_master_proc) = procp; 4046 PROC_UNLOCK(procp); 4047 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 4048 NFSLOCKV4ROOTMUTEX(); 4049 if (!NFSD_VNET(nfsrv_suspend_nfsd)) { 4050 /* Lock out all nfsd threads */ 4051 do { 4052 igotlock = nfsv4_lock( 4053 &NFSD_VNET(nfsd_suspend_lock), 1, NULL, 4054 NFSV4ROOTLOCKMUTEXPTR, NULL); 4055 } while (igotlock == 0 && 4056 !NFSD_VNET(nfsrv_suspend_nfsd)); 4057 NFSD_VNET(nfsrv_suspend_nfsd) = true; 4058 } 4059 NFSUNLOCKV4ROOTMUTEX(); 4060 error = 0; 4061 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 4062 NFSLOCKV4ROOTMUTEX(); 4063 if (NFSD_VNET(nfsrv_suspend_nfsd)) { 4064 nfsv4_unlock(&NFSD_VNET(nfsd_suspend_lock), 0); 4065 NFSD_VNET(nfsrv_suspend_nfsd) = false; 4066 } 4067 NFSUNLOCKV4ROOTMUTEX(); 4068 error = 0; 4069 } 4070 4071 NFSEXITCODE(error); 4072 return (error); 4073 } 4074 4075 /* 4076 * Check exports. 4077 * Returns 0 if ok, 1 otherwise. 4078 */ 4079 int 4080 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 4081 { 4082 int i; 4083 4084 if ((NFSVNO_EXTLS(exp) && (nd->nd_flag & ND_TLS) == 0) || 4085 (NFSVNO_EXTLSCERT(exp) && 4086 (nd->nd_flag & ND_TLSCERT) == 0) || 4087 (NFSVNO_EXTLSCERTUSER(exp) && 4088 (nd->nd_flag & ND_TLSCERTUSER) == 0)) { 4089 if ((nd->nd_flag & ND_NFSV4) != 0) 4090 return (NFSERR_WRONGSEC); 4091 #ifdef notnow 4092 /* There is currently no auth_stat for this. */ 4093 else if ((nd->nd_flag & ND_TLS) == 0) 4094 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS); 4095 else 4096 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS_MUTUAL_HOST); 4097 #endif 4098 else 4099 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4100 } 4101 4102 /* 4103 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to use 4104 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 4105 */ 4106 if ((nd->nd_flag & ND_NFSV3) != 0 && nd->nd_procnum == NFSPROC_FSINFO) 4107 return (0); 4108 4109 /* 4110 * This seems odd, but allow the case where the security flavor 4111 * list is empty. This happens when NFSv4 is traversing non-exported 4112 * file systems. Exported file systems should always have a non-empty 4113 * security flavor list. 4114 */ 4115 if (exp->nes_numsecflavor == 0) 4116 return (0); 4117 4118 for (i = 0; i < exp->nes_numsecflavor; i++) { 4119 /* 4120 * The tests for privacy and integrity must be first, 4121 * since ND_GSS is set for everything but AUTH_SYS. 4122 */ 4123 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 4124 (nd->nd_flag & ND_GSSPRIVACY)) 4125 return (0); 4126 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 4127 (nd->nd_flag & ND_GSSINTEGRITY)) 4128 return (0); 4129 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 4130 (nd->nd_flag & ND_GSS)) 4131 return (0); 4132 if (exp->nes_secflavors[i] == AUTH_SYS && 4133 (nd->nd_flag & ND_GSS) == 0) 4134 return (0); 4135 } 4136 if ((nd->nd_flag & ND_NFSV4) != 0) 4137 return (NFSERR_WRONGSEC); 4138 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4139 } 4140 4141 /* 4142 * Calculate a hash value for the fid in a file handle. 4143 */ 4144 uint32_t 4145 nfsrv_hashfh(fhandle_t *fhp) 4146 { 4147 uint32_t hashval; 4148 4149 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 4150 return (hashval); 4151 } 4152 4153 /* 4154 * Calculate a hash value for the sessionid. 4155 */ 4156 uint32_t 4157 nfsrv_hashsessionid(uint8_t *sessionid) 4158 { 4159 uint32_t hashval; 4160 4161 hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); 4162 return (hashval); 4163 } 4164 4165 /* 4166 * Signal the userland master nfsd to backup the stable restart file. 4167 */ 4168 void 4169 nfsrv_backupstable(void) 4170 { 4171 struct proc *procp; 4172 4173 if (NFSD_VNET(nfsd_master_proc) != NULL) { 4174 procp = pfind(nfsd_master_pid); 4175 /* Try to make sure it is the correct process. */ 4176 if (procp == NFSD_VNET(nfsd_master_proc) && 4177 procp->p_stats->p_start.tv_sec == 4178 nfsd_master_start.tv_sec && 4179 procp->p_stats->p_start.tv_usec == 4180 nfsd_master_start.tv_usec && 4181 strcmp(procp->p_comm, nfsd_master_comm) == 0) 4182 kern_psignal(procp, SIGUSR2); 4183 else 4184 NFSD_VNET(nfsd_master_proc) = NULL; 4185 4186 if (procp != NULL) 4187 PROC_UNLOCK(procp); 4188 } 4189 } 4190 4191 /* 4192 * Create a DS data file for nfsrv_pnfscreate(). Called for each mirror. 4193 * The arguments are in a structure, so that they can be passed through 4194 * taskqueue for a kernel process to execute this function. 4195 */ 4196 struct nfsrvdscreate { 4197 int done; 4198 int inprog; 4199 struct task tsk; 4200 struct ucred *tcred; 4201 struct vnode *dvp; 4202 NFSPROC_T *p; 4203 struct pnfsdsfile *pf; 4204 int err; 4205 fhandle_t fh; 4206 struct vattr va; 4207 struct vattr createva; 4208 }; 4209 4210 int 4211 nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap, 4212 fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa, 4213 char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp) 4214 { 4215 struct vnode *nvp; 4216 struct nameidata named; 4217 struct vattr va; 4218 char *bufp; 4219 u_long *hashp; 4220 struct nfsnode *np; 4221 struct nfsmount *nmp; 4222 int error; 4223 4224 NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE, 4225 LOCKPARENT | LOCKLEAF | NOCACHE); 4226 nfsvno_setpathbuf(&named, &bufp, &hashp); 4227 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE; 4228 named.ni_cnd.cn_nameptr = bufp; 4229 if (fnamep != NULL) { 4230 strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1); 4231 named.ni_cnd.cn_namelen = strlen(bufp); 4232 } else 4233 named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp); 4234 NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp); 4235 4236 /* Create the date file in the DS mount. */ 4237 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4238 if (error == 0) { 4239 error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap); 4240 vref(dvp); 4241 VOP_VPUT_PAIR(dvp, error == 0 ? &nvp : NULL, false); 4242 if (error == 0) { 4243 /* Set the ownership of the file. */ 4244 error = VOP_SETATTR(nvp, nvap, tcred); 4245 NFSD_DEBUG(4, "nfsrv_dscreate:" 4246 " setattr-uid=%d\n", error); 4247 if (error != 0) 4248 vput(nvp); 4249 } 4250 if (error != 0) 4251 printf("pNFS: pnfscreate failed=%d\n", error); 4252 } else 4253 printf("pNFS: pnfscreate vnlock=%d\n", error); 4254 if (error == 0) { 4255 np = VTONFS(nvp); 4256 nmp = VFSTONFS(nvp->v_mount); 4257 if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs") 4258 != 0 || nmp->nm_nam->sa_len > sizeof( 4259 struct sockaddr_in6) || 4260 np->n_fhp->nfh_len != NFSX_MYFH) { 4261 printf("Bad DS file: fstype=%s salen=%d" 4262 " fhlen=%d\n", 4263 nvp->v_mount->mnt_vfc->vfc_name, 4264 nmp->nm_nam->sa_len, np->n_fhp->nfh_len); 4265 error = ENOENT; 4266 } 4267 4268 /* Set extattrs for the DS on the MDS file. */ 4269 if (error == 0) { 4270 if (dsa != NULL) { 4271 error = VOP_GETATTR(nvp, &va, tcred); 4272 if (error == 0) { 4273 dsa->dsa_filerev = va.va_filerev; 4274 dsa->dsa_size = va.va_size; 4275 dsa->dsa_atime = va.va_atime; 4276 dsa->dsa_mtime = va.va_mtime; 4277 dsa->dsa_bytes = va.va_bytes; 4278 } 4279 } 4280 if (error == 0) { 4281 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, 4282 NFSX_MYFH); 4283 NFSBCOPY(nmp->nm_nam, &pf->dsf_sin, 4284 nmp->nm_nam->sa_len); 4285 NFSBCOPY(named.ni_cnd.cn_nameptr, 4286 pf->dsf_filename, 4287 sizeof(pf->dsf_filename)); 4288 } 4289 } else 4290 printf("pNFS: pnfscreate can't get DS" 4291 " attr=%d\n", error); 4292 if (nvpp != NULL && error == 0) 4293 *nvpp = nvp; 4294 else 4295 vput(nvp); 4296 } 4297 nfsvno_relpathbuf(&named); 4298 return (error); 4299 } 4300 4301 /* 4302 * Start up the thread that will execute nfsrv_dscreate(). 4303 */ 4304 static void 4305 start_dscreate(void *arg, int pending) 4306 { 4307 struct nfsrvdscreate *dsc; 4308 4309 dsc = (struct nfsrvdscreate *)arg; 4310 dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh, 4311 dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL); 4312 dsc->done = 1; 4313 NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err); 4314 } 4315 4316 /* 4317 * Create a pNFS data file on the Data Server(s). 4318 */ 4319 static void 4320 nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred, 4321 NFSPROC_T *p) 4322 { 4323 struct nfsrvdscreate *dsc, *tdsc = NULL; 4324 struct nfsdevice *ds, *tds, *fds; 4325 struct mount *mp; 4326 struct pnfsdsfile *pf, *tpf; 4327 struct pnfsdsattr dsattr; 4328 struct vattr va; 4329 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4330 struct nfsmount *nmp; 4331 fhandle_t fh; 4332 uid_t vauid; 4333 gid_t vagid; 4334 u_short vamode; 4335 struct ucred *tcred; 4336 int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret; 4337 int failpos, timo; 4338 4339 /* Get a DS server directory in a round-robin order. */ 4340 mirrorcnt = 1; 4341 mp = vp->v_mount; 4342 ds = fds = NULL; 4343 NFSDDSLOCK(); 4344 /* 4345 * Search for the first entry that handles this MDS fs, but use the 4346 * first entry for all MDS fs's otherwise. 4347 */ 4348 TAILQ_FOREACH(tds, &nfsrv_devidhead, nfsdev_list) { 4349 if (tds->nfsdev_nmp != NULL) { 4350 if (tds->nfsdev_mdsisset == 0 && ds == NULL) 4351 ds = tds; 4352 else if (tds->nfsdev_mdsisset != 0 && fsidcmp( 4353 &mp->mnt_stat.f_fsid, &tds->nfsdev_mdsfsid) == 0) { 4354 ds = fds = tds; 4355 break; 4356 } 4357 } 4358 } 4359 if (ds == NULL) { 4360 NFSDDSUNLOCK(); 4361 NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n"); 4362 return; 4363 } 4364 i = dsdir[0] = ds->nfsdev_nextdir; 4365 ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize; 4366 dvp[0] = ds->nfsdev_dsdir[i]; 4367 tds = TAILQ_NEXT(ds, nfsdev_list); 4368 if (nfsrv_maxpnfsmirror > 1 && tds != NULL) { 4369 TAILQ_FOREACH_FROM(tds, &nfsrv_devidhead, nfsdev_list) { 4370 if (tds->nfsdev_nmp != NULL && 4371 ((tds->nfsdev_mdsisset == 0 && fds == NULL) || 4372 (tds->nfsdev_mdsisset != 0 && fds != NULL && 4373 fsidcmp(&mp->mnt_stat.f_fsid, 4374 &tds->nfsdev_mdsfsid) == 0))) { 4375 dsdir[mirrorcnt] = i; 4376 dvp[mirrorcnt] = tds->nfsdev_dsdir[i]; 4377 mirrorcnt++; 4378 if (mirrorcnt >= nfsrv_maxpnfsmirror) 4379 break; 4380 } 4381 } 4382 } 4383 /* Put at end of list to implement round-robin usage. */ 4384 TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list); 4385 TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list); 4386 NFSDDSUNLOCK(); 4387 dsc = NULL; 4388 if (mirrorcnt > 1) 4389 tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP, 4390 M_WAITOK | M_ZERO); 4391 tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK | 4392 M_ZERO); 4393 4394 error = nfsvno_getfh(vp, &fh, p); 4395 if (error == 0) 4396 error = VOP_GETATTR(vp, &va, cred); 4397 if (error == 0) { 4398 /* Set the attributes for "vp" to Setattr the DS vp. */ 4399 vauid = va.va_uid; 4400 vagid = va.va_gid; 4401 vamode = va.va_mode; 4402 VATTR_NULL(&va); 4403 va.va_uid = vauid; 4404 va.va_gid = vagid; 4405 va.va_mode = vamode; 4406 va.va_size = 0; 4407 } else 4408 printf("pNFS: pnfscreate getfh+attr=%d\n", error); 4409 4410 NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid, 4411 cred->cr_gid); 4412 /* Make data file name based on FH. */ 4413 tcred = newnfs_getcred(); 4414 4415 /* 4416 * Create the file on each DS mirror, using kernel process(es) for the 4417 * additional mirrors. 4418 */ 4419 failpos = -1; 4420 for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) { 4421 tpf->dsf_dir = dsdir[i]; 4422 tdsc->tcred = tcred; 4423 tdsc->p = p; 4424 tdsc->pf = tpf; 4425 tdsc->createva = *vap; 4426 NFSBCOPY(&fh, &tdsc->fh, sizeof(fh)); 4427 tdsc->va = va; 4428 tdsc->dvp = dvp[i]; 4429 tdsc->done = 0; 4430 tdsc->inprog = 0; 4431 tdsc->err = 0; 4432 ret = EIO; 4433 if (nfs_pnfsiothreads != 0) { 4434 ret = nfs_pnfsio(start_dscreate, tdsc); 4435 NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret); 4436 } 4437 if (ret != 0) { 4438 ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL, 4439 NULL, tcred, p, NULL); 4440 if (ret != 0) { 4441 KASSERT(error == 0, ("nfsrv_dscreate err=%d", 4442 error)); 4443 if (failpos == -1 && nfsds_failerr(ret)) 4444 failpos = i; 4445 else 4446 error = ret; 4447 } 4448 } 4449 } 4450 if (error == 0) { 4451 tpf->dsf_dir = dsdir[mirrorcnt - 1]; 4452 error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf, 4453 &dsattr, NULL, tcred, p, NULL); 4454 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) { 4455 failpos = mirrorcnt - 1; 4456 error = 0; 4457 } 4458 } 4459 timo = hz / 50; /* Wait for 20msec. */ 4460 if (timo < 1) 4461 timo = 1; 4462 /* Wait for kernel task(s) to complete. */ 4463 for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) { 4464 while (tdsc->inprog != 0 && tdsc->done == 0) 4465 tsleep(&tdsc->tsk, PVFS, "srvdcr", timo); 4466 if (tdsc->err != 0) { 4467 if (failpos == -1 && nfsds_failerr(tdsc->err)) 4468 failpos = i; 4469 else if (error == 0) 4470 error = tdsc->err; 4471 } 4472 } 4473 4474 /* 4475 * If failpos has been set, that mirror has failed, so it needs 4476 * to be disabled. 4477 */ 4478 if (failpos >= 0) { 4479 nmp = VFSTONFS(dvp[failpos]->v_mount); 4480 NFSLOCKMNT(nmp); 4481 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4482 NFSMNTP_CANCELRPCS)) == 0) { 4483 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4484 NFSUNLOCKMNT(nmp); 4485 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4486 NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos, 4487 ds); 4488 if (ds != NULL) 4489 nfsrv_killrpcs(nmp); 4490 NFSLOCKMNT(nmp); 4491 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4492 wakeup(nmp); 4493 } 4494 NFSUNLOCKMNT(nmp); 4495 } 4496 4497 NFSFREECRED(tcred); 4498 if (error == 0) { 4499 ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp"); 4500 4501 NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n", 4502 mirrorcnt, nfsrv_maxpnfsmirror); 4503 /* 4504 * For all mirrors that couldn't be created, fill in the 4505 * *pf structure, but with an IP address == 0.0.0.0. 4506 */ 4507 tpf = pf + mirrorcnt; 4508 for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) { 4509 *tpf = *pf; 4510 tpf->dsf_sin.sin_family = AF_INET; 4511 tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in); 4512 tpf->dsf_sin.sin_addr.s_addr = 0; 4513 tpf->dsf_sin.sin_port = 0; 4514 } 4515 4516 error = vn_extattr_set(vp, IO_NODELOCKED, 4517 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", 4518 sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p); 4519 if (error == 0) 4520 error = vn_extattr_set(vp, IO_NODELOCKED, 4521 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", 4522 sizeof(dsattr), (char *)&dsattr, p); 4523 if (error != 0) 4524 printf("pNFS: pnfscreate setextattr=%d\n", 4525 error); 4526 } else 4527 printf("pNFS: pnfscreate=%d\n", error); 4528 free(pf, M_TEMP); 4529 free(dsc, M_TEMP); 4530 } 4531 4532 /* 4533 * Get the information needed to remove the pNFS Data Server file from the 4534 * Metadata file. Upon success, ddvp is set non-NULL to the locked 4535 * DS directory vnode. The caller must unlock *ddvp when done with it. 4536 */ 4537 static void 4538 nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp, 4539 int *mirrorcntp, char *fname, fhandle_t *fhp) 4540 { 4541 struct vattr va; 4542 struct ucred *tcred; 4543 char *buf; 4544 int buflen, error; 4545 4546 dvpp[0] = NULL; 4547 /* If not an exported regular file or not a pNFS server, just return. */ 4548 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4549 nfsrv_devidcnt == 0) 4550 return; 4551 4552 /* Check to see if this is the last hard link. */ 4553 tcred = newnfs_getcred(); 4554 error = VOP_GETATTR(vp, &va, tcred); 4555 NFSFREECRED(tcred); 4556 if (error != 0) { 4557 printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error); 4558 return; 4559 } 4560 if (va.va_nlink > 1) 4561 return; 4562 4563 error = nfsvno_getfh(vp, fhp, p); 4564 if (error != 0) { 4565 printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error); 4566 return; 4567 } 4568 4569 buflen = 1024; 4570 buf = malloc(buflen, M_TEMP, M_WAITOK); 4571 /* Get the directory vnode for the DS mount and the file handle. */ 4572 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp, 4573 NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL); 4574 free(buf, M_TEMP); 4575 if (error != 0) 4576 printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error); 4577 } 4578 4579 /* 4580 * Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror. 4581 * The arguments are in a structure, so that they can be passed through 4582 * taskqueue for a kernel process to execute this function. 4583 */ 4584 struct nfsrvdsremove { 4585 int done; 4586 int inprog; 4587 struct task tsk; 4588 struct ucred *tcred; 4589 struct vnode *dvp; 4590 NFSPROC_T *p; 4591 int err; 4592 char fname[PNFS_FILENAME_LEN + 1]; 4593 }; 4594 4595 static int 4596 nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred, 4597 NFSPROC_T *p) 4598 { 4599 struct nameidata named; 4600 struct vnode *nvp; 4601 char *bufp; 4602 u_long *hashp; 4603 int error; 4604 4605 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4606 if (error != 0) 4607 return (error); 4608 named.ni_cnd.cn_nameiop = DELETE; 4609 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 4610 named.ni_cnd.cn_cred = tcred; 4611 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 4612 nfsvno_setpathbuf(&named, &bufp, &hashp); 4613 named.ni_cnd.cn_nameptr = bufp; 4614 named.ni_cnd.cn_namelen = strlen(fname); 4615 strlcpy(bufp, fname, NAME_MAX); 4616 NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp); 4617 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 4618 NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error); 4619 if (error == 0) { 4620 error = VOP_REMOVE(dvp, nvp, &named.ni_cnd); 4621 vput(nvp); 4622 } 4623 NFSVOPUNLOCK(dvp); 4624 nfsvno_relpathbuf(&named); 4625 if (error != 0) 4626 printf("pNFS: nfsrv_pnfsremove failed=%d\n", error); 4627 return (error); 4628 } 4629 4630 /* 4631 * Start up the thread that will execute nfsrv_dsremove(). 4632 */ 4633 static void 4634 start_dsremove(void *arg, int pending) 4635 { 4636 struct nfsrvdsremove *dsrm; 4637 4638 dsrm = (struct nfsrvdsremove *)arg; 4639 dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred, 4640 dsrm->p); 4641 dsrm->done = 1; 4642 NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err); 4643 } 4644 4645 /* 4646 * Remove a pNFS data file from a Data Server. 4647 * nfsrv_pnfsremovesetup() must have been called before the MDS file was 4648 * removed to set up the dvp and fill in the FH. 4649 */ 4650 static void 4651 nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp, 4652 NFSPROC_T *p) 4653 { 4654 struct ucred *tcred; 4655 struct nfsrvdsremove *dsrm, *tdsrm; 4656 struct nfsdevice *ds; 4657 struct nfsmount *nmp; 4658 int failpos, i, ret, timo; 4659 4660 tcred = newnfs_getcred(); 4661 dsrm = NULL; 4662 if (mirrorcnt > 1) 4663 dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK); 4664 /* 4665 * Remove the file on each DS mirror, using kernel process(es) for the 4666 * additional mirrors. 4667 */ 4668 failpos = -1; 4669 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4670 tdsrm->tcred = tcred; 4671 tdsrm->p = p; 4672 tdsrm->dvp = dvp[i]; 4673 strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1); 4674 tdsrm->inprog = 0; 4675 tdsrm->done = 0; 4676 tdsrm->err = 0; 4677 ret = EIO; 4678 if (nfs_pnfsiothreads != 0) { 4679 ret = nfs_pnfsio(start_dsremove, tdsrm); 4680 NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret); 4681 } 4682 if (ret != 0) { 4683 ret = nfsrv_dsremove(dvp[i], fname, tcred, p); 4684 if (failpos == -1 && nfsds_failerr(ret)) 4685 failpos = i; 4686 } 4687 } 4688 ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p); 4689 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret)) 4690 failpos = mirrorcnt - 1; 4691 timo = hz / 50; /* Wait for 20msec. */ 4692 if (timo < 1) 4693 timo = 1; 4694 /* Wait for kernel task(s) to complete. */ 4695 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4696 while (tdsrm->inprog != 0 && tdsrm->done == 0) 4697 tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo); 4698 if (failpos == -1 && nfsds_failerr(tdsrm->err)) 4699 failpos = i; 4700 } 4701 4702 /* 4703 * If failpos has been set, that mirror has failed, so it needs 4704 * to be disabled. 4705 */ 4706 if (failpos >= 0) { 4707 nmp = VFSTONFS(dvp[failpos]->v_mount); 4708 NFSLOCKMNT(nmp); 4709 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4710 NFSMNTP_CANCELRPCS)) == 0) { 4711 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4712 NFSUNLOCKMNT(nmp); 4713 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4714 NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos, 4715 ds); 4716 if (ds != NULL) 4717 nfsrv_killrpcs(nmp); 4718 NFSLOCKMNT(nmp); 4719 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4720 wakeup(nmp); 4721 } 4722 NFSUNLOCKMNT(nmp); 4723 } 4724 4725 /* Get rid all layouts for the file. */ 4726 nfsrv_freefilelayouts(fhp); 4727 4728 NFSFREECRED(tcred); 4729 free(dsrm, M_TEMP); 4730 } 4731 4732 /* 4733 * Generate a file name based on the file handle and put it in *bufp. 4734 * Return the number of bytes generated. 4735 */ 4736 static int 4737 nfsrv_putfhname(fhandle_t *fhp, char *bufp) 4738 { 4739 int i; 4740 uint8_t *cp; 4741 const uint8_t *hexdigits = "0123456789abcdef"; 4742 4743 cp = (uint8_t *)fhp; 4744 for (i = 0; i < sizeof(*fhp); i++) { 4745 bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf]; 4746 bufp[2 * i + 1] = hexdigits[*cp++ & 0xf]; 4747 } 4748 bufp[2 * i] = '\0'; 4749 return (2 * i); 4750 } 4751 4752 /* 4753 * Update the Metadata file's attributes from the DS file when a Read/Write 4754 * layout is returned. 4755 * Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN 4756 * so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file. 4757 */ 4758 int 4759 nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 4760 { 4761 struct ucred *tcred; 4762 int error; 4763 4764 /* Do this as root so that it won't fail with EACCES. */ 4765 tcred = newnfs_getcred(); 4766 error = nfsrv_proxyds(vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN, 4767 NULL, NULL, NULL, nap, NULL, NULL, 0, NULL); 4768 NFSFREECRED(tcred); 4769 return (error); 4770 } 4771 4772 /* 4773 * Set the NFSv4 ACL on the DS file to the same ACL as the MDS file. 4774 */ 4775 static int 4776 nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred, 4777 NFSPROC_T *p) 4778 { 4779 int error; 4780 4781 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETACL, 4782 NULL, NULL, NULL, NULL, aclp, NULL, 0, NULL); 4783 return (error); 4784 } 4785 4786 static int 4787 nfsrv_proxyds(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 4788 struct thread *p, int ioproc, struct mbuf **mpp, char *cp, 4789 struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp, 4790 off_t *offp, int content, bool *eofp) 4791 { 4792 struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp; 4793 fhandle_t fh[NFSDEV_MAXMIRRORS]; 4794 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4795 struct nfsdevice *ds; 4796 struct pnfsdsattr dsattr; 4797 struct opnfsdsattr odsattr; 4798 char *buf; 4799 int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt; 4800 4801 NFSD_DEBUG(4, "in nfsrv_proxyds\n"); 4802 /* 4803 * If not a regular file, not exported or not a pNFS server, 4804 * just return ENOENT. 4805 */ 4806 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4807 nfsrv_devidcnt == 0) 4808 return (ENOENT); 4809 4810 buflen = 1024; 4811 buf = malloc(buflen, M_TEMP, M_WAITOK); 4812 error = 0; 4813 4814 /* 4815 * For Getattr, get the Change attribute (va_filerev) and size (va_size) 4816 * from the MetaData file's extended attribute. 4817 */ 4818 if (ioproc == NFSPROC_GETATTR) { 4819 error = vn_extattr_get(vp, IO_NODELOCKED, 4820 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf, 4821 p); 4822 if (error == 0) { 4823 if (buflen == sizeof(odsattr)) { 4824 NFSBCOPY(buf, &odsattr, buflen); 4825 nap->na_filerev = odsattr.dsa_filerev; 4826 nap->na_size = odsattr.dsa_size; 4827 nap->na_atime = odsattr.dsa_atime; 4828 nap->na_mtime = odsattr.dsa_mtime; 4829 /* 4830 * Fake na_bytes by rounding up na_size. 4831 * Since we don't know the block size, just 4832 * use BLKDEV_IOSIZE. 4833 */ 4834 nap->na_bytes = (odsattr.dsa_size + 4835 BLKDEV_IOSIZE - 1) & ~(BLKDEV_IOSIZE - 1); 4836 } else if (buflen == sizeof(dsattr)) { 4837 NFSBCOPY(buf, &dsattr, buflen); 4838 nap->na_filerev = dsattr.dsa_filerev; 4839 nap->na_size = dsattr.dsa_size; 4840 nap->na_atime = dsattr.dsa_atime; 4841 nap->na_mtime = dsattr.dsa_mtime; 4842 nap->na_bytes = dsattr.dsa_bytes; 4843 } else 4844 error = ENXIO; 4845 } 4846 if (error == 0) { 4847 /* 4848 * If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr() 4849 * returns 0, just return now. nfsrv_checkdsattr() 4850 * returns 0 if there is no Read/Write layout 4851 * plus either an Open/Write_access or Write 4852 * delegation issued to a client for the file. 4853 */ 4854 if (nfsrv_pnfsgetdsattr == 0 || 4855 nfsrv_checkdsattr(vp, p) == 0) { 4856 free(buf, M_TEMP); 4857 return (error); 4858 } 4859 } 4860 4861 /* 4862 * Clear ENOATTR so the code below will attempt to do a 4863 * nfsrv_getattrdsrpc() to get the attributes and (re)create 4864 * the extended attribute. 4865 */ 4866 if (error == ENOATTR) 4867 error = 0; 4868 } 4869 4870 origmircnt = -1; 4871 trycnt = 0; 4872 tryagain: 4873 if (error == 0) { 4874 buflen = 1024; 4875 if (ioproc == NFSPROC_READDS && NFSVOPISLOCKED(vp) == 4876 LK_EXCLUSIVE) 4877 printf("nfsrv_proxyds: Readds vp exclusively locked\n"); 4878 error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen, 4879 &mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL, 4880 NULL, NULL); 4881 if (error == 0) { 4882 for (i = 0; i < mirrorcnt; i++) 4883 nmp[i] = VFSTONFS(dvp[i]->v_mount); 4884 } else 4885 printf("pNFS: proxy getextattr sockaddr=%d\n", error); 4886 } else 4887 printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error); 4888 if (error == 0) { 4889 failpos = -1; 4890 if (origmircnt == -1) 4891 origmircnt = mirrorcnt; 4892 /* 4893 * If failpos is set to a mirror#, then that mirror has 4894 * failed and will be disabled. For Read, Getattr and Seek, the 4895 * function only tries one mirror, so if that mirror has 4896 * failed, it will need to be retried. As such, increment 4897 * tryitagain for these cases. 4898 * For Write, Setattr and Setacl, the function tries all 4899 * mirrors and will not return an error for the case where 4900 * one mirror has failed. For these cases, the functioning 4901 * mirror(s) will have been modified, so a retry isn't 4902 * necessary. These functions will set failpos for the 4903 * failed mirror#. 4904 */ 4905 if (ioproc == NFSPROC_READDS) { 4906 error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0], 4907 mpp, mpp2); 4908 if (nfsds_failerr(error) && mirrorcnt > 1) { 4909 /* 4910 * Setting failpos will cause the mirror 4911 * to be disabled and then a retry of this 4912 * read is required. 4913 */ 4914 failpos = 0; 4915 error = 0; 4916 trycnt++; 4917 } 4918 } else if (ioproc == NFSPROC_WRITEDS) 4919 error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp, 4920 &nmp[0], mirrorcnt, mpp, cp, &failpos); 4921 else if (ioproc == NFSPROC_SETATTR) 4922 error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0], 4923 mirrorcnt, nap, &failpos); 4924 else if (ioproc == NFSPROC_SETACL) 4925 error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0], 4926 mirrorcnt, aclp, &failpos); 4927 else if (ioproc == NFSPROC_SEEKDS) { 4928 error = nfsrv_seekdsrpc(fh, offp, content, eofp, cred, 4929 p, nmp[0]); 4930 if (nfsds_failerr(error) && mirrorcnt > 1) { 4931 /* 4932 * Setting failpos will cause the mirror 4933 * to be disabled and then a retry of this 4934 * read is required. 4935 */ 4936 failpos = 0; 4937 error = 0; 4938 trycnt++; 4939 } 4940 } else if (ioproc == NFSPROC_ALLOCATE) 4941 error = nfsrv_allocatedsrpc(fh, off, *offp, cred, p, vp, 4942 &nmp[0], mirrorcnt, &failpos); 4943 else if (ioproc == NFSPROC_DEALLOCATE) 4944 error = nfsrv_deallocatedsrpc(fh, off, *offp, cred, p, 4945 vp, &nmp[0], mirrorcnt, &failpos); 4946 else { 4947 error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p, 4948 vp, nmp[mirrorcnt - 1], nap); 4949 if (nfsds_failerr(error) && mirrorcnt > 1) { 4950 /* 4951 * Setting failpos will cause the mirror 4952 * to be disabled and then a retry of this 4953 * getattr is required. 4954 */ 4955 failpos = mirrorcnt - 1; 4956 error = 0; 4957 trycnt++; 4958 } 4959 } 4960 ds = NULL; 4961 if (failpos >= 0) { 4962 failnmp = nmp[failpos]; 4963 NFSLOCKMNT(failnmp); 4964 if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM | 4965 NFSMNTP_CANCELRPCS)) == 0) { 4966 failnmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4967 NFSUNLOCKMNT(failnmp); 4968 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, 4969 failnmp, p); 4970 NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n", 4971 failpos, ds); 4972 if (ds != NULL) 4973 nfsrv_killrpcs(failnmp); 4974 NFSLOCKMNT(failnmp); 4975 failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4976 wakeup(failnmp); 4977 } 4978 NFSUNLOCKMNT(failnmp); 4979 } 4980 for (i = 0; i < mirrorcnt; i++) 4981 NFSVOPUNLOCK(dvp[i]); 4982 NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error, 4983 trycnt); 4984 /* Try the Read/Getattr again if a mirror was deleted. */ 4985 if (ds != NULL && trycnt > 0 && trycnt < origmircnt) 4986 goto tryagain; 4987 } else { 4988 /* Return ENOENT for any Extended Attribute error. */ 4989 error = ENOENT; 4990 } 4991 free(buf, M_TEMP); 4992 NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error); 4993 return (error); 4994 } 4995 4996 /* 4997 * Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended 4998 * attribute. 4999 * newnmpp - If it points to a non-NULL nmp, that is the destination and needs 5000 * to be checked. If it points to a NULL nmp, then it returns 5001 * a suitable destination. 5002 * curnmp - If non-NULL, it is the source mount for the copy. 5003 */ 5004 int 5005 nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp, 5006 int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp, 5007 char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp, 5008 struct nfsmount *curnmp, int *ippos, int *dsdirp) 5009 { 5010 struct vnode *dvp, *nvp = NULL, **tdvpp; 5011 struct mount *mp; 5012 struct nfsmount *nmp, *newnmp; 5013 struct sockaddr *sad; 5014 struct sockaddr_in *sin; 5015 struct nfsdevice *ds, *tds, *fndds; 5016 struct pnfsdsfile *pf; 5017 uint32_t dsdir; 5018 int error, fhiszero, fnd, gotone, i, mirrorcnt; 5019 5020 ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp"); 5021 *mirrorcntp = 1; 5022 tdvpp = dvpp; 5023 if (nvpp != NULL) 5024 *nvpp = NULL; 5025 if (dvpp != NULL) 5026 *dvpp = NULL; 5027 if (ippos != NULL) 5028 *ippos = -1; 5029 if (newnmpp != NULL) 5030 newnmp = *newnmpp; 5031 else 5032 newnmp = NULL; 5033 mp = vp->v_mount; 5034 error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5035 "pnfsd.dsfile", buflenp, buf, p); 5036 mirrorcnt = *buflenp / sizeof(*pf); 5037 if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS || 5038 *buflenp != sizeof(*pf) * mirrorcnt)) 5039 error = ENOATTR; 5040 5041 pf = (struct pnfsdsfile *)buf; 5042 /* If curnmp != NULL, check for a match in the mirror list. */ 5043 if (curnmp != NULL && error == 0) { 5044 fnd = 0; 5045 for (i = 0; i < mirrorcnt; i++, pf++) { 5046 sad = (struct sockaddr *)&pf->dsf_sin; 5047 if (nfsaddr2_match(sad, curnmp->nm_nam)) { 5048 if (ippos != NULL) 5049 *ippos = i; 5050 fnd = 1; 5051 break; 5052 } 5053 } 5054 if (fnd == 0) 5055 error = ENXIO; 5056 } 5057 5058 gotone = 0; 5059 pf = (struct pnfsdsfile *)buf; 5060 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt, 5061 error); 5062 for (i = 0; i < mirrorcnt && error == 0; i++, pf++) { 5063 fhiszero = 0; 5064 sad = (struct sockaddr *)&pf->dsf_sin; 5065 sin = &pf->dsf_sin; 5066 dsdir = pf->dsf_dir; 5067 if (dsdir >= nfsrv_dsdirsize) { 5068 printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir); 5069 error = ENOATTR; 5070 } else if (nvpp != NULL && newnmp != NULL && 5071 nfsaddr2_match(sad, newnmp->nm_nam)) 5072 error = EEXIST; 5073 if (error == 0) { 5074 if (ippos != NULL && curnmp == NULL && 5075 sad->sa_family == AF_INET && 5076 sin->sin_addr.s_addr == 0) 5077 *ippos = i; 5078 if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0) 5079 fhiszero = 1; 5080 /* Use the socket address to find the mount point. */ 5081 fndds = NULL; 5082 NFSDDSLOCK(); 5083 /* Find a match for the IP address. */ 5084 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 5085 if (ds->nfsdev_nmp != NULL) { 5086 dvp = ds->nfsdev_dvp; 5087 nmp = VFSTONFS(dvp->v_mount); 5088 if (nmp != ds->nfsdev_nmp) 5089 printf("different2 nmp %p %p\n", 5090 nmp, ds->nfsdev_nmp); 5091 if (nfsaddr2_match(sad, nmp->nm_nam)) { 5092 fndds = ds; 5093 break; 5094 } 5095 } 5096 } 5097 if (fndds != NULL && newnmpp != NULL && 5098 newnmp == NULL) { 5099 /* Search for a place to make a mirror copy. */ 5100 TAILQ_FOREACH(tds, &nfsrv_devidhead, 5101 nfsdev_list) { 5102 if (tds->nfsdev_nmp != NULL && 5103 fndds != tds && 5104 ((tds->nfsdev_mdsisset == 0 && 5105 fndds->nfsdev_mdsisset == 0) || 5106 (tds->nfsdev_mdsisset != 0 && 5107 fndds->nfsdev_mdsisset != 0 && 5108 fsidcmp(&tds->nfsdev_mdsfsid, 5109 &mp->mnt_stat.f_fsid) == 0))) { 5110 *newnmpp = tds->nfsdev_nmp; 5111 break; 5112 } 5113 } 5114 if (tds != NULL) { 5115 /* 5116 * Move this entry to the end of the 5117 * list, so it won't be selected as 5118 * easily the next time. 5119 */ 5120 TAILQ_REMOVE(&nfsrv_devidhead, tds, 5121 nfsdev_list); 5122 TAILQ_INSERT_TAIL(&nfsrv_devidhead, tds, 5123 nfsdev_list); 5124 } 5125 } 5126 NFSDDSUNLOCK(); 5127 if (fndds != NULL) { 5128 dvp = fndds->nfsdev_dsdir[dsdir]; 5129 if (lktype != 0 || fhiszero != 0 || 5130 (nvpp != NULL && *nvpp == NULL)) { 5131 if (fhiszero != 0) 5132 error = vn_lock(dvp, 5133 LK_EXCLUSIVE); 5134 else if (lktype != 0) 5135 error = vn_lock(dvp, lktype); 5136 else 5137 error = vn_lock(dvp, LK_SHARED); 5138 /* 5139 * If the file handle is all 0's, try to 5140 * do a Lookup against the DS to acquire 5141 * it. 5142 * If dvpp == NULL or the Lookup fails, 5143 * unlock dvp after the call. 5144 */ 5145 if (error == 0 && (fhiszero != 0 || 5146 (nvpp != NULL && *nvpp == NULL))) { 5147 error = nfsrv_pnfslookupds(vp, 5148 dvp, pf, &nvp, p); 5149 if (error == 0) { 5150 if (fhiszero != 0) 5151 nfsrv_pnfssetfh( 5152 vp, pf, 5153 devid, 5154 fnamep, 5155 nvp, p); 5156 if (nvpp != NULL && 5157 *nvpp == NULL) { 5158 *nvpp = nvp; 5159 *dsdirp = dsdir; 5160 } else 5161 vput(nvp); 5162 } 5163 if (error != 0 || lktype == 0) 5164 NFSVOPUNLOCK(dvp); 5165 } 5166 } 5167 if (error == 0) { 5168 gotone++; 5169 NFSD_DEBUG(4, "gotone=%d\n", gotone); 5170 if (devid != NULL) { 5171 NFSBCOPY(fndds->nfsdev_deviceid, 5172 devid, NFSX_V4DEVICEID); 5173 devid += NFSX_V4DEVICEID; 5174 } 5175 if (dvpp != NULL) 5176 *tdvpp++ = dvp; 5177 if (fhp != NULL) 5178 NFSBCOPY(&pf->dsf_fh, fhp++, 5179 NFSX_MYFH); 5180 if (fnamep != NULL && gotone == 1) 5181 strlcpy(fnamep, 5182 pf->dsf_filename, 5183 sizeof(pf->dsf_filename)); 5184 } else 5185 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt " 5186 "err=%d\n", error); 5187 } 5188 } 5189 } 5190 if (error == 0 && gotone == 0) 5191 error = ENOENT; 5192 5193 NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone, 5194 error); 5195 if (error == 0) 5196 *mirrorcntp = gotone; 5197 else { 5198 if (gotone > 0 && dvpp != NULL) { 5199 /* 5200 * If the error didn't occur on the first one and 5201 * dvpp != NULL, the one(s) prior to the failure will 5202 * have locked dvp's that need to be unlocked. 5203 */ 5204 for (i = 0; i < gotone; i++) { 5205 NFSVOPUNLOCK(*dvpp); 5206 *dvpp++ = NULL; 5207 } 5208 } 5209 /* 5210 * If it found the vnode to be copied from before a failure, 5211 * it needs to be vput()'d. 5212 */ 5213 if (nvpp != NULL && *nvpp != NULL) { 5214 vput(*nvpp); 5215 *nvpp = NULL; 5216 } 5217 } 5218 return (error); 5219 } 5220 5221 /* 5222 * Set the extended attribute for the Change attribute. 5223 */ 5224 static int 5225 nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 5226 { 5227 struct pnfsdsattr dsattr; 5228 int error; 5229 5230 ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp"); 5231 dsattr.dsa_filerev = nap->na_filerev; 5232 dsattr.dsa_size = nap->na_size; 5233 dsattr.dsa_atime = nap->na_atime; 5234 dsattr.dsa_mtime = nap->na_mtime; 5235 dsattr.dsa_bytes = nap->na_bytes; 5236 error = vn_extattr_set(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5237 "pnfsd.dsattr", sizeof(dsattr), (char *)&dsattr, p); 5238 if (error != 0) 5239 printf("pNFS: setextattr=%d\n", error); 5240 return (error); 5241 } 5242 5243 static int 5244 nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5245 NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp) 5246 { 5247 uint32_t *tl; 5248 struct nfsrv_descript *nd; 5249 nfsv4stateid_t st; 5250 struct mbuf *m, *m2; 5251 int error = 0, retlen, tlen, trimlen; 5252 5253 NFSD_DEBUG(4, "in nfsrv_readdsrpc\n"); 5254 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5255 *mpp = NULL; 5256 /* 5257 * Use a stateid where other is an alternating 01010 pattern and 5258 * seqid is 0xffffffff. This value is not defined as special by 5259 * the RFC and is used by the FreeBSD NFS server to indicate an 5260 * MDS->DS proxy operation. 5261 */ 5262 st.other[0] = 0x55555555; 5263 st.other[1] = 0x55555555; 5264 st.other[2] = 0x55555555; 5265 st.seqid = 0xffffffff; 5266 nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5267 NULL, NULL, 0, 0, cred); 5268 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5269 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5270 txdr_hyper(off, tl); 5271 *(tl + 2) = txdr_unsigned(len); 5272 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5273 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5274 if (error != 0) { 5275 free(nd, M_TEMP); 5276 return (error); 5277 } 5278 if (nd->nd_repstat == 0) { 5279 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 5280 NFSM_STRSIZ(retlen, len); 5281 if (retlen > 0) { 5282 /* Trim off the pre-data XDR from the mbuf chain. */ 5283 m = nd->nd_mrep; 5284 while (m != NULL && m != nd->nd_md) { 5285 if (m->m_next == nd->nd_md) { 5286 m->m_next = NULL; 5287 m_freem(nd->nd_mrep); 5288 nd->nd_mrep = m = nd->nd_md; 5289 } else 5290 m = m->m_next; 5291 } 5292 if (m == NULL) { 5293 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5294 error = ENOENT; 5295 goto nfsmout; 5296 } 5297 5298 /* 5299 * Now, adjust first mbuf so that any XDR before the 5300 * read data is skipped over. 5301 */ 5302 trimlen = nd->nd_dpos - mtod(m, char *); 5303 if (trimlen > 0) { 5304 m->m_len -= trimlen; 5305 NFSM_DATAP(m, trimlen); 5306 } 5307 5308 /* 5309 * Truncate the mbuf chain at retlen bytes of data, 5310 * plus XDR padding that brings the length up to a 5311 * multiple of 4. 5312 */ 5313 tlen = NFSM_RNDUP(retlen); 5314 do { 5315 if (m->m_len >= tlen) { 5316 m->m_len = tlen; 5317 tlen = 0; 5318 m2 = m->m_next; 5319 m->m_next = NULL; 5320 m_freem(m2); 5321 break; 5322 } 5323 tlen -= m->m_len; 5324 m = m->m_next; 5325 } while (m != NULL); 5326 if (tlen > 0) { 5327 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5328 error = ENOENT; 5329 goto nfsmout; 5330 } 5331 *mpp = nd->nd_mrep; 5332 *mpendp = m; 5333 nd->nd_mrep = NULL; 5334 } 5335 } else 5336 error = nd->nd_repstat; 5337 nfsmout: 5338 /* If nd->nd_mrep is already NULL, this is a no-op. */ 5339 m_freem(nd->nd_mrep); 5340 free(nd, M_TEMP); 5341 NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error); 5342 return (error); 5343 } 5344 5345 /* 5346 * Do a write RPC on a DS data file, using this structure for the arguments, 5347 * so that this function can be executed by a separate kernel process. 5348 */ 5349 struct nfsrvwritedsdorpc { 5350 int done; 5351 int inprog; 5352 struct task tsk; 5353 fhandle_t fh; 5354 off_t off; 5355 int len; 5356 struct nfsmount *nmp; 5357 struct ucred *cred; 5358 NFSPROC_T *p; 5359 struct mbuf *m; 5360 int err; 5361 }; 5362 5363 static int 5364 nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len, 5365 struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p) 5366 { 5367 uint32_t *tl; 5368 struct nfsrv_descript *nd; 5369 nfsattrbit_t attrbits; 5370 nfsv4stateid_t st; 5371 int commit, error, retlen; 5372 5373 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5374 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp, 5375 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5376 5377 /* 5378 * Use a stateid where other is an alternating 01010 pattern and 5379 * seqid is 0xffffffff. This value is not defined as special by 5380 * the RFC and is used by the FreeBSD NFS server to indicate an 5381 * MDS->DS proxy operation. 5382 */ 5383 st.other[0] = 0x55555555; 5384 st.other[1] = 0x55555555; 5385 st.other[2] = 0x55555555; 5386 st.seqid = 0xffffffff; 5387 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5388 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5389 txdr_hyper(off, tl); 5390 tl += 2; 5391 /* 5392 * Do all writes FileSync, since the server doesn't hold onto dirty 5393 * buffers. Since clients should be accessing the DS servers directly 5394 * using the pNFS layouts, this just needs to work correctly as a 5395 * fallback. 5396 */ 5397 *tl++ = txdr_unsigned(NFSWRITE_FILESYNC); 5398 *tl = txdr_unsigned(len); 5399 NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len); 5400 5401 /* Put data in mbuf chain. */ 5402 nd->nd_mb->m_next = m; 5403 5404 /* Set nd_mb and nd_bpos to end of data. */ 5405 while (m->m_next != NULL) 5406 m = m->m_next; 5407 nd->nd_mb = m; 5408 nfsm_set(nd, m->m_len); 5409 NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len); 5410 5411 /* Do a Getattr for the attributes that change upon writing. */ 5412 NFSZERO_ATTRBIT(&attrbits); 5413 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5414 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5415 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5416 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5418 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 5419 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5420 (void) nfsrv_putattrbit(nd, &attrbits); 5421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5422 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5423 if (error != 0) { 5424 free(nd, M_TEMP); 5425 return (error); 5426 } 5427 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat); 5428 /* Get rid of weak cache consistency data for now. */ 5429 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5430 (ND_NFSV4 | ND_V4WCCATTR)) { 5431 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5432 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5433 NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error); 5434 if (error != 0) 5435 goto nfsmout; 5436 /* 5437 * Get rid of Op# and status for next op. 5438 */ 5439 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5440 if (*++tl != 0) 5441 nd->nd_flag |= ND_NOMOREDATA; 5442 } 5443 if (nd->nd_repstat == 0) { 5444 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5445 retlen = fxdr_unsigned(int, *tl++); 5446 commit = fxdr_unsigned(int, *tl); 5447 if (commit != NFSWRITE_FILESYNC) 5448 error = NFSERR_IO; 5449 NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n", 5450 retlen, commit, error); 5451 } else 5452 error = nd->nd_repstat; 5453 /* We have no use for the Write Verifier since we use FileSync. */ 5454 5455 /* 5456 * Get the Change, Size, Access Time and Modify Time attributes and set 5457 * on the Metadata file, so its attributes will be what the file's 5458 * would be if it had been written. 5459 */ 5460 if (error == 0) { 5461 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5462 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5463 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5464 } 5465 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error); 5466 nfsmout: 5467 m_freem(nd->nd_mrep); 5468 free(nd, M_TEMP); 5469 NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error); 5470 return (error); 5471 } 5472 5473 /* 5474 * Start up the thread that will execute nfsrv_writedsdorpc(). 5475 */ 5476 static void 5477 start_writedsdorpc(void *arg, int pending) 5478 { 5479 struct nfsrvwritedsdorpc *drpc; 5480 5481 drpc = (struct nfsrvwritedsdorpc *)arg; 5482 drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5483 drpc->len, NULL, drpc->m, drpc->cred, drpc->p); 5484 drpc->done = 1; 5485 NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err); 5486 } 5487 5488 static int 5489 nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5490 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5491 struct mbuf **mpp, char *cp, int *failposp) 5492 { 5493 struct nfsrvwritedsdorpc *drpc, *tdrpc = NULL; 5494 struct nfsvattr na; 5495 struct mbuf *m; 5496 int error, i, offs, ret, timo; 5497 5498 NFSD_DEBUG(4, "in nfsrv_writedsrpc\n"); 5499 KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain")); 5500 drpc = NULL; 5501 if (mirrorcnt > 1) 5502 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5503 M_WAITOK); 5504 5505 /* Calculate offset in mbuf chain that data starts. */ 5506 offs = cp - mtod(*mpp, char *); 5507 NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len); 5508 5509 /* 5510 * Do the write RPC for every DS, using a separate kernel process 5511 * for every DS except the last one. 5512 */ 5513 error = 0; 5514 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5515 tdrpc->done = 0; 5516 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5517 tdrpc->off = off; 5518 tdrpc->len = len; 5519 tdrpc->nmp = *nmpp; 5520 tdrpc->cred = cred; 5521 tdrpc->p = p; 5522 tdrpc->inprog = 0; 5523 tdrpc->err = 0; 5524 tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5525 ret = EIO; 5526 if (nfs_pnfsiothreads != 0) { 5527 ret = nfs_pnfsio(start_writedsdorpc, tdrpc); 5528 NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n", 5529 ret); 5530 } 5531 if (ret != 0) { 5532 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL, 5533 tdrpc->m, cred, p); 5534 if (nfsds_failerr(ret) && *failposp == -1) 5535 *failposp = i; 5536 else if (error == 0 && ret != 0) 5537 error = ret; 5538 } 5539 nmpp++; 5540 fhp++; 5541 } 5542 m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5543 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p); 5544 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5545 *failposp = mirrorcnt - 1; 5546 else if (error == 0 && ret != 0) 5547 error = ret; 5548 if (error == 0) 5549 error = nfsrv_setextattr(vp, &na, p); 5550 NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error); 5551 tdrpc = drpc; 5552 timo = hz / 50; /* Wait for 20msec. */ 5553 if (timo < 1) 5554 timo = 1; 5555 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5556 /* Wait for RPCs on separate threads to complete. */ 5557 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5558 tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo); 5559 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5560 *failposp = i; 5561 else if (error == 0 && tdrpc->err != 0) 5562 error = tdrpc->err; 5563 } 5564 free(drpc, M_TEMP); 5565 return (error); 5566 } 5567 5568 /* 5569 * Do a allocate RPC on a DS data file, using this structure for the arguments, 5570 * so that this function can be executed by a separate kernel process. 5571 */ 5572 struct nfsrvallocatedsdorpc { 5573 int done; 5574 int inprog; 5575 struct task tsk; 5576 fhandle_t fh; 5577 off_t off; 5578 off_t len; 5579 struct nfsmount *nmp; 5580 struct ucred *cred; 5581 NFSPROC_T *p; 5582 int err; 5583 }; 5584 5585 static int 5586 nfsrv_allocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5587 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5588 { 5589 uint32_t *tl; 5590 struct nfsrv_descript *nd; 5591 nfsattrbit_t attrbits; 5592 nfsv4stateid_t st; 5593 int error; 5594 5595 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5596 nfscl_reqstart(nd, NFSPROC_ALLOCATE, nmp, (u_int8_t *)fhp, 5597 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5598 5599 /* 5600 * Use a stateid where other is an alternating 01010 pattern and 5601 * seqid is 0xffffffff. This value is not defined as special by 5602 * the RFC and is used by the FreeBSD NFS server to indicate an 5603 * MDS->DS proxy operation. 5604 */ 5605 st.other[0] = 0x55555555; 5606 st.other[1] = 0x55555555; 5607 st.other[2] = 0x55555555; 5608 st.seqid = 0xffffffff; 5609 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5610 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5611 txdr_hyper(off, tl); tl += 2; 5612 txdr_hyper(len, tl); tl += 2; 5613 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: len=%jd\n", (intmax_t)len); 5614 5615 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5616 NFSGETATTR_ATTRBIT(&attrbits); 5617 nfsrv_putattrbit(nd, &attrbits); 5618 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5619 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5620 if (error != 0) { 5621 free(nd, M_TEMP); 5622 return (error); 5623 } 5624 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft allocaterpc=%d\n", 5625 nd->nd_repstat); 5626 if (nd->nd_repstat == 0) { 5627 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5628 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5629 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5630 } else 5631 error = nd->nd_repstat; 5632 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft loadattr=%d\n", error); 5633 nfsmout: 5634 m_freem(nd->nd_mrep); 5635 free(nd, M_TEMP); 5636 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc error=%d\n", error); 5637 return (error); 5638 } 5639 5640 /* 5641 * Start up the thread that will execute nfsrv_allocatedsdorpc(). 5642 */ 5643 static void 5644 start_allocatedsdorpc(void *arg, int pending) 5645 { 5646 struct nfsrvallocatedsdorpc *drpc; 5647 5648 drpc = (struct nfsrvallocatedsdorpc *)arg; 5649 drpc->err = nfsrv_allocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5650 drpc->len, NULL, drpc->cred, drpc->p); 5651 drpc->done = 1; 5652 NFSD_DEBUG(4, "start_allocatedsdorpc: err=%d\n", drpc->err); 5653 } 5654 5655 static int 5656 nfsrv_allocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5657 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5658 int *failposp) 5659 { 5660 struct nfsrvallocatedsdorpc *drpc, *tdrpc = NULL; 5661 struct nfsvattr na; 5662 int error, i, ret, timo; 5663 5664 NFSD_DEBUG(4, "in nfsrv_allocatedsrpc\n"); 5665 drpc = NULL; 5666 if (mirrorcnt > 1) 5667 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5668 M_WAITOK); 5669 5670 /* 5671 * Do the allocate RPC for every DS, using a separate kernel process 5672 * for every DS except the last one. 5673 */ 5674 error = 0; 5675 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5676 tdrpc->done = 0; 5677 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5678 tdrpc->off = off; 5679 tdrpc->len = len; 5680 tdrpc->nmp = *nmpp; 5681 tdrpc->cred = cred; 5682 tdrpc->p = p; 5683 tdrpc->inprog = 0; 5684 tdrpc->err = 0; 5685 ret = EIO; 5686 if (nfs_pnfsiothreads != 0) { 5687 ret = nfs_pnfsio(start_allocatedsdorpc, tdrpc); 5688 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: nfs_pnfsio=%d\n", 5689 ret); 5690 } 5691 if (ret != 0) { 5692 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, NULL, 5693 cred, p); 5694 if (nfsds_failerr(ret) && *failposp == -1) 5695 *failposp = i; 5696 else if (error == 0 && ret != 0) 5697 error = ret; 5698 } 5699 nmpp++; 5700 fhp++; 5701 } 5702 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5703 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5704 *failposp = mirrorcnt - 1; 5705 else if (error == 0 && ret != 0) 5706 error = ret; 5707 if (error == 0) 5708 error = nfsrv_setextattr(vp, &na, p); 5709 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: aft setextat=%d\n", error); 5710 tdrpc = drpc; 5711 timo = hz / 50; /* Wait for 20msec. */ 5712 if (timo < 1) 5713 timo = 1; 5714 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5715 /* Wait for RPCs on separate threads to complete. */ 5716 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5717 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5718 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5719 *failposp = i; 5720 else if (error == 0 && tdrpc->err != 0) 5721 error = tdrpc->err; 5722 } 5723 free(drpc, M_TEMP); 5724 return (error); 5725 } 5726 5727 /* 5728 * Do a deallocate RPC on a DS data file, using this structure for the 5729 * arguments, so that this function can be executed by a separate kernel 5730 * process. 5731 */ 5732 struct nfsrvdeallocatedsdorpc { 5733 int done; 5734 int inprog; 5735 struct task tsk; 5736 fhandle_t fh; 5737 off_t off; 5738 off_t len; 5739 struct nfsmount *nmp; 5740 struct ucred *cred; 5741 NFSPROC_T *p; 5742 int err; 5743 }; 5744 5745 static int 5746 nfsrv_deallocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5747 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5748 { 5749 uint32_t *tl; 5750 struct nfsrv_descript *nd; 5751 nfsattrbit_t attrbits; 5752 nfsv4stateid_t st; 5753 int error; 5754 5755 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5756 nfscl_reqstart(nd, NFSPROC_DEALLOCATE, nmp, (u_int8_t *)fhp, 5757 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5758 5759 /* 5760 * Use a stateid where other is an alternating 01010 pattern and 5761 * seqid is 0xffffffff. This value is not defined as special by 5762 * the RFC and is used by the FreeBSD NFS server to indicate an 5763 * MDS->DS proxy operation. 5764 */ 5765 st.other[0] = 0x55555555; 5766 st.other[1] = 0x55555555; 5767 st.other[2] = 0x55555555; 5768 st.seqid = 0xffffffff; 5769 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5770 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5771 txdr_hyper(off, tl); tl += 2; 5772 txdr_hyper(len, tl); tl += 2; 5773 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: len=%jd\n", (intmax_t)len); 5774 5775 /* Do a Getattr for the attributes that change upon writing. */ 5776 NFSZERO_ATTRBIT(&attrbits); 5777 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5778 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5779 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5780 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5781 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5782 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5783 nfsrv_putattrbit(nd, &attrbits); 5784 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5785 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5786 if (error != 0) { 5787 free(nd, M_TEMP); 5788 return (error); 5789 } 5790 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft deallocaterpc=%d\n", 5791 nd->nd_repstat); 5792 /* Get rid of weak cache consistency data for now. */ 5793 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5794 (ND_NFSV4 | ND_V4WCCATTR)) { 5795 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5796 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5797 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: wcc attr=%d\n", error); 5798 if (error != 0) 5799 goto nfsmout; 5800 /* 5801 * Get rid of Op# and status for next op. 5802 */ 5803 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5804 if (*++tl != 0) 5805 nd->nd_flag |= ND_NOMOREDATA; 5806 } 5807 if (nd->nd_repstat == 0) { 5808 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5809 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5810 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5811 } else 5812 error = nd->nd_repstat; 5813 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft loadattr=%d\n", error); 5814 nfsmout: 5815 m_freem(nd->nd_mrep); 5816 free(nd, M_TEMP); 5817 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc error=%d\n", error); 5818 return (error); 5819 } 5820 5821 /* 5822 * Start up the thread that will execute nfsrv_deallocatedsdorpc(). 5823 */ 5824 static void 5825 start_deallocatedsdorpc(void *arg, int pending) 5826 { 5827 struct nfsrvdeallocatedsdorpc *drpc; 5828 5829 drpc = (struct nfsrvdeallocatedsdorpc *)arg; 5830 drpc->err = nfsrv_deallocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5831 drpc->len, NULL, drpc->cred, drpc->p); 5832 drpc->done = 1; 5833 NFSD_DEBUG(4, "start_deallocatedsdorpc: err=%d\n", drpc->err); 5834 } 5835 5836 static int 5837 nfsrv_deallocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5838 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5839 int *failposp) 5840 { 5841 struct nfsrvdeallocatedsdorpc *drpc, *tdrpc = NULL; 5842 struct nfsvattr na; 5843 int error, i, ret, timo; 5844 5845 NFSD_DEBUG(4, "in nfsrv_deallocatedsrpc\n"); 5846 drpc = NULL; 5847 if (mirrorcnt > 1) 5848 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5849 M_WAITOK); 5850 5851 /* 5852 * Do the deallocate RPC for every DS, using a separate kernel process 5853 * for every DS except the last one. 5854 */ 5855 error = 0; 5856 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5857 tdrpc->done = 0; 5858 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5859 tdrpc->off = off; 5860 tdrpc->len = len; 5861 tdrpc->nmp = *nmpp; 5862 tdrpc->cred = cred; 5863 tdrpc->p = p; 5864 tdrpc->inprog = 0; 5865 tdrpc->err = 0; 5866 ret = EIO; 5867 if (nfs_pnfsiothreads != 0) { 5868 ret = nfs_pnfsio(start_deallocatedsdorpc, tdrpc); 5869 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: nfs_pnfsio=%d\n", 5870 ret); 5871 } 5872 if (ret != 0) { 5873 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, 5874 NULL, cred, p); 5875 if (nfsds_failerr(ret) && *failposp == -1) 5876 *failposp = i; 5877 else if (error == 0 && ret != 0) 5878 error = ret; 5879 } 5880 nmpp++; 5881 fhp++; 5882 } 5883 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5884 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5885 *failposp = mirrorcnt - 1; 5886 else if (error == 0 && ret != 0) 5887 error = ret; 5888 if (error == 0) 5889 error = nfsrv_setextattr(vp, &na, p); 5890 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: aft setextat=%d\n", error); 5891 tdrpc = drpc; 5892 timo = hz / 50; /* Wait for 20msec. */ 5893 if (timo < 1) 5894 timo = 1; 5895 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5896 /* Wait for RPCs on separate threads to complete. */ 5897 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5898 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5899 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5900 *failposp = i; 5901 else if (error == 0 && tdrpc->err != 0) 5902 error = tdrpc->err; 5903 } 5904 free(drpc, M_TEMP); 5905 return (error); 5906 } 5907 5908 static int 5909 nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 5910 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap, 5911 struct nfsvattr *dsnap) 5912 { 5913 uint32_t *tl; 5914 struct nfsrv_descript *nd; 5915 nfsv4stateid_t st; 5916 nfsattrbit_t attrbits; 5917 int error; 5918 5919 NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n"); 5920 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5921 /* 5922 * Use a stateid where other is an alternating 01010 pattern and 5923 * seqid is 0xffffffff. This value is not defined as special by 5924 * the RFC and is used by the FreeBSD NFS server to indicate an 5925 * MDS->DS proxy operation. 5926 */ 5927 st.other[0] = 0x55555555; 5928 st.other[1] = 0x55555555; 5929 st.other[2] = 0x55555555; 5930 st.seqid = 0xffffffff; 5931 nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5932 NULL, NULL, 0, 0, cred); 5933 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5934 nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0); 5935 5936 /* Do a Getattr for the attributes that change due to writing. */ 5937 NFSZERO_ATTRBIT(&attrbits); 5938 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5939 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5940 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5941 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5942 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5943 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 5944 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5945 (void) nfsrv_putattrbit(nd, &attrbits); 5946 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5947 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5948 if (error != 0) { 5949 free(nd, M_TEMP); 5950 return (error); 5951 } 5952 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n", 5953 nd->nd_repstat); 5954 /* Get rid of weak cache consistency data for now. */ 5955 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5956 (ND_NFSV4 | ND_V4WCCATTR)) { 5957 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 5958 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5959 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error); 5960 if (error != 0) 5961 goto nfsmout; 5962 /* 5963 * Get rid of Op# and status for next op. 5964 */ 5965 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5966 if (*++tl != 0) 5967 nd->nd_flag |= ND_NOMOREDATA; 5968 } 5969 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 5970 if (error != 0) 5971 goto nfsmout; 5972 if (nd->nd_repstat != 0) 5973 error = nd->nd_repstat; 5974 /* 5975 * Get the Change, Size, Access Time and Modify Time attributes and set 5976 * on the Metadata file, so its attributes will be what the file's 5977 * would be if it had been written. 5978 */ 5979 if (error == 0) { 5980 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5981 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 5982 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5983 } 5984 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error); 5985 nfsmout: 5986 m_freem(nd->nd_mrep); 5987 free(nd, M_TEMP); 5988 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error); 5989 return (error); 5990 } 5991 5992 struct nfsrvsetattrdsdorpc { 5993 int done; 5994 int inprog; 5995 struct task tsk; 5996 fhandle_t fh; 5997 struct nfsmount *nmp; 5998 struct vnode *vp; 5999 struct ucred *cred; 6000 NFSPROC_T *p; 6001 struct nfsvattr na; 6002 struct nfsvattr dsna; 6003 int err; 6004 }; 6005 6006 /* 6007 * Start up the thread that will execute nfsrv_setattrdsdorpc(). 6008 */ 6009 static void 6010 start_setattrdsdorpc(void *arg, int pending) 6011 { 6012 struct nfsrvsetattrdsdorpc *drpc; 6013 6014 drpc = (struct nfsrvsetattrdsdorpc *)arg; 6015 drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p, 6016 drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna); 6017 drpc->done = 1; 6018 } 6019 6020 static int 6021 nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6022 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 6023 struct nfsvattr *nap, int *failposp) 6024 { 6025 struct nfsrvsetattrdsdorpc *drpc, *tdrpc = NULL; 6026 struct nfsvattr na; 6027 int error, i, ret, timo; 6028 6029 NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n"); 6030 drpc = NULL; 6031 if (mirrorcnt > 1) 6032 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6033 M_WAITOK); 6034 6035 /* 6036 * Do the setattr RPC for every DS, using a separate kernel process 6037 * for every DS except the last one. 6038 */ 6039 error = 0; 6040 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6041 tdrpc->done = 0; 6042 tdrpc->inprog = 0; 6043 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6044 tdrpc->nmp = *nmpp; 6045 tdrpc->vp = vp; 6046 tdrpc->cred = cred; 6047 tdrpc->p = p; 6048 tdrpc->na = *nap; 6049 tdrpc->err = 0; 6050 ret = EIO; 6051 if (nfs_pnfsiothreads != 0) { 6052 ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc); 6053 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n", 6054 ret); 6055 } 6056 if (ret != 0) { 6057 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, 6058 &na); 6059 if (nfsds_failerr(ret) && *failposp == -1) 6060 *failposp = i; 6061 else if (error == 0 && ret != 0) 6062 error = ret; 6063 } 6064 nmpp++; 6065 fhp++; 6066 } 6067 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na); 6068 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6069 *failposp = mirrorcnt - 1; 6070 else if (error == 0 && ret != 0) 6071 error = ret; 6072 if (error == 0) 6073 error = nfsrv_setextattr(vp, &na, p); 6074 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error); 6075 tdrpc = drpc; 6076 timo = hz / 50; /* Wait for 20msec. */ 6077 if (timo < 1) 6078 timo = 1; 6079 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6080 /* Wait for RPCs on separate threads to complete. */ 6081 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6082 tsleep(&tdrpc->tsk, PVFS, "srvsads", timo); 6083 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6084 *failposp = i; 6085 else if (error == 0 && tdrpc->err != 0) 6086 error = tdrpc->err; 6087 } 6088 free(drpc, M_TEMP); 6089 return (error); 6090 } 6091 6092 /* 6093 * Do a Setattr of an NFSv4 ACL on the DS file. 6094 */ 6095 static int 6096 nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6097 struct vnode *vp, struct nfsmount *nmp, struct acl *aclp) 6098 { 6099 struct nfsrv_descript *nd; 6100 nfsv4stateid_t st; 6101 nfsattrbit_t attrbits; 6102 int error; 6103 6104 NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n"); 6105 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6106 /* 6107 * Use a stateid where other is an alternating 01010 pattern and 6108 * seqid is 0xffffffff. This value is not defined as special by 6109 * the RFC and is used by the FreeBSD NFS server to indicate an 6110 * MDS->DS proxy operation. 6111 */ 6112 st.other[0] = 0x55555555; 6113 st.other[1] = 0x55555555; 6114 st.other[2] = 0x55555555; 6115 st.seqid = 0xffffffff; 6116 nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6117 NULL, NULL, 0, 0, cred); 6118 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6119 NFSZERO_ATTRBIT(&attrbits); 6120 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 6121 /* 6122 * The "vp" argument to nfsv4_fillattr() is only used for vnode_type(), 6123 * so passing in the metadata "vp" will be ok, since it is of 6124 * the same type (VREG). 6125 */ 6126 nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL, 6127 NULL, 0, 0, 0, 0, 0, NULL); 6128 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6129 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6130 if (error != 0) { 6131 free(nd, M_TEMP); 6132 return (error); 6133 } 6134 NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n", 6135 nd->nd_repstat); 6136 error = nd->nd_repstat; 6137 m_freem(nd->nd_mrep); 6138 free(nd, M_TEMP); 6139 return (error); 6140 } 6141 6142 struct nfsrvsetacldsdorpc { 6143 int done; 6144 int inprog; 6145 struct task tsk; 6146 fhandle_t fh; 6147 struct nfsmount *nmp; 6148 struct vnode *vp; 6149 struct ucred *cred; 6150 NFSPROC_T *p; 6151 struct acl *aclp; 6152 int err; 6153 }; 6154 6155 /* 6156 * Start up the thread that will execute nfsrv_setacldsdorpc(). 6157 */ 6158 static void 6159 start_setacldsdorpc(void *arg, int pending) 6160 { 6161 struct nfsrvsetacldsdorpc *drpc; 6162 6163 drpc = (struct nfsrvsetacldsdorpc *)arg; 6164 drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p, 6165 drpc->vp, drpc->nmp, drpc->aclp); 6166 drpc->done = 1; 6167 } 6168 6169 static int 6170 nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6171 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp, 6172 int *failposp) 6173 { 6174 struct nfsrvsetacldsdorpc *drpc, *tdrpc = NULL; 6175 int error, i, ret, timo; 6176 6177 NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n"); 6178 drpc = NULL; 6179 if (mirrorcnt > 1) 6180 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6181 M_WAITOK); 6182 6183 /* 6184 * Do the setattr RPC for every DS, using a separate kernel process 6185 * for every DS except the last one. 6186 */ 6187 error = 0; 6188 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6189 tdrpc->done = 0; 6190 tdrpc->inprog = 0; 6191 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6192 tdrpc->nmp = *nmpp; 6193 tdrpc->vp = vp; 6194 tdrpc->cred = cred; 6195 tdrpc->p = p; 6196 tdrpc->aclp = aclp; 6197 tdrpc->err = 0; 6198 ret = EIO; 6199 if (nfs_pnfsiothreads != 0) { 6200 ret = nfs_pnfsio(start_setacldsdorpc, tdrpc); 6201 NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n", 6202 ret); 6203 } 6204 if (ret != 0) { 6205 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, 6206 aclp); 6207 if (nfsds_failerr(ret) && *failposp == -1) 6208 *failposp = i; 6209 else if (error == 0 && ret != 0) 6210 error = ret; 6211 } 6212 nmpp++; 6213 fhp++; 6214 } 6215 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp); 6216 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6217 *failposp = mirrorcnt - 1; 6218 else if (error == 0 && ret != 0) 6219 error = ret; 6220 NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error); 6221 tdrpc = drpc; 6222 timo = hz / 50; /* Wait for 20msec. */ 6223 if (timo < 1) 6224 timo = 1; 6225 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6226 /* Wait for RPCs on separate threads to complete. */ 6227 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6228 tsleep(&tdrpc->tsk, PVFS, "srvacds", timo); 6229 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6230 *failposp = i; 6231 else if (error == 0 && tdrpc->err != 0) 6232 error = tdrpc->err; 6233 } 6234 free(drpc, M_TEMP); 6235 return (error); 6236 } 6237 6238 /* 6239 * Getattr call to the DS for the attributes that change due to writing. 6240 */ 6241 static int 6242 nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6243 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap) 6244 { 6245 struct nfsrv_descript *nd; 6246 int error; 6247 nfsattrbit_t attrbits; 6248 6249 NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n"); 6250 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6251 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp, 6252 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6253 NFSZERO_ATTRBIT(&attrbits); 6254 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6255 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6256 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6257 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6258 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6259 (void) nfsrv_putattrbit(nd, &attrbits); 6260 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6261 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6262 if (error != 0) { 6263 free(nd, M_TEMP); 6264 return (error); 6265 } 6266 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n", 6267 nd->nd_repstat); 6268 if (nd->nd_repstat == 0) { 6269 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 6270 NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, 6271 NULL, NULL); 6272 /* 6273 * We can only save the updated values in the extended 6274 * attribute if the vp is exclusively locked. 6275 * This should happen when any of the following operations 6276 * occur on the vnode: 6277 * Close, Delegreturn, LayoutCommit, LayoutReturn 6278 * As such, the updated extended attribute should get saved 6279 * before nfsrv_checkdsattr() returns 0 and allows the cached 6280 * attributes to be returned without calling this function. 6281 */ 6282 if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) { 6283 error = nfsrv_setextattr(vp, nap, p); 6284 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n", 6285 error); 6286 } 6287 } else 6288 error = nd->nd_repstat; 6289 m_freem(nd->nd_mrep); 6290 free(nd, M_TEMP); 6291 NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error); 6292 return (error); 6293 } 6294 6295 /* 6296 * Seek call to a DS. 6297 */ 6298 static int 6299 nfsrv_seekdsrpc(fhandle_t *fhp, off_t *offp, int content, bool *eofp, 6300 struct ucred *cred, NFSPROC_T *p, struct nfsmount *nmp) 6301 { 6302 uint32_t *tl; 6303 struct nfsrv_descript *nd; 6304 nfsv4stateid_t st; 6305 int error; 6306 6307 NFSD_DEBUG(4, "in nfsrv_seekdsrpc\n"); 6308 /* 6309 * Use a stateid where other is an alternating 01010 pattern and 6310 * seqid is 0xffffffff. This value is not defined as special by 6311 * the RFC and is used by the FreeBSD NFS server to indicate an 6312 * MDS->DS proxy operation. 6313 */ 6314 st.other[0] = 0x55555555; 6315 st.other[1] = 0x55555555; 6316 st.other[2] = 0x55555555; 6317 st.seqid = 0xffffffff; 6318 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6319 nfscl_reqstart(nd, NFSPROC_SEEKDS, nmp, (u_int8_t *)fhp, 6320 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6321 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6322 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6323 txdr_hyper(*offp, tl); tl += 2; 6324 *tl = txdr_unsigned(content); 6325 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6326 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6327 if (error != 0) { 6328 free(nd, M_TEMP); 6329 return (error); 6330 } 6331 NFSD_DEBUG(4, "nfsrv_seekdsrpc: aft seekrpc=%d\n", nd->nd_repstat); 6332 if (nd->nd_repstat == 0) { 6333 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + NFSX_HYPER); 6334 if (*tl++ == newnfs_true) 6335 *eofp = true; 6336 else 6337 *eofp = false; 6338 *offp = fxdr_hyper(tl); 6339 } else 6340 error = nd->nd_repstat; 6341 nfsmout: 6342 m_freem(nd->nd_mrep); 6343 free(nd, M_TEMP); 6344 NFSD_DEBUG(4, "nfsrv_seekdsrpc error=%d\n", error); 6345 return (error); 6346 } 6347 6348 /* 6349 * Get the device id and file handle for a DS file. 6350 */ 6351 int 6352 nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp, 6353 fhandle_t *fhp, char *devid) 6354 { 6355 int buflen, error; 6356 char *buf; 6357 6358 buflen = 1024; 6359 buf = malloc(buflen, M_TEMP, M_WAITOK); 6360 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL, 6361 fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL); 6362 free(buf, M_TEMP); 6363 return (error); 6364 } 6365 6366 /* 6367 * Do a Lookup against the DS for the filename. 6368 */ 6369 static int 6370 nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf, 6371 struct vnode **nvpp, NFSPROC_T *p) 6372 { 6373 struct nameidata named; 6374 struct ucred *tcred; 6375 char *bufp; 6376 u_long *hashp; 6377 struct vnode *nvp; 6378 int error; 6379 6380 tcred = newnfs_getcred(); 6381 named.ni_cnd.cn_nameiop = LOOKUP; 6382 named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY; 6383 named.ni_cnd.cn_cred = tcred; 6384 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 6385 nfsvno_setpathbuf(&named, &bufp, &hashp); 6386 named.ni_cnd.cn_nameptr = bufp; 6387 named.ni_cnd.cn_namelen = strlen(pf->dsf_filename); 6388 strlcpy(bufp, pf->dsf_filename, NAME_MAX); 6389 NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp); 6390 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 6391 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error); 6392 NFSFREECRED(tcred); 6393 nfsvno_relpathbuf(&named); 6394 if (error == 0) 6395 *nvpp = nvp; 6396 NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error); 6397 return (error); 6398 } 6399 6400 /* 6401 * Set the file handle to the correct one. 6402 */ 6403 static void 6404 nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, char *devid, 6405 char *fnamep, struct vnode *nvp, NFSPROC_T *p) 6406 { 6407 struct nfsnode *np; 6408 int ret = 0; 6409 6410 np = VTONFS(nvp); 6411 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH); 6412 /* 6413 * We can only do a vn_set_extattr() if the vnode is exclusively 6414 * locked and vn_start_write() has been done. If devid != NULL or 6415 * fnamep != NULL or the vnode is shared locked, vn_start_write() 6416 * may not have been done. 6417 * If not done now, it will be done on a future call. 6418 */ 6419 if (devid == NULL && fnamep == NULL && NFSVOPISLOCKED(vp) == 6420 LK_EXCLUSIVE) 6421 ret = vn_extattr_set(vp, IO_NODELOCKED, 6422 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", sizeof(*pf), 6423 (char *)pf, p); 6424 NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret); 6425 } 6426 6427 /* 6428 * Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point 6429 * when the DS has failed. 6430 */ 6431 void 6432 nfsrv_killrpcs(struct nfsmount *nmp) 6433 { 6434 6435 /* 6436 * Call newnfs_nmcancelreqs() to cause 6437 * any RPCs in progress on the mount point to 6438 * fail. 6439 * This will cause any process waiting for an 6440 * RPC to complete while holding a vnode lock 6441 * on the mounted-on vnode (such as "df" or 6442 * a non-forced "umount") to fail. 6443 * This will unlock the mounted-on vnode so 6444 * a forced dismount can succeed. 6445 * The NFSMNTP_CANCELRPCS flag should be set when this function is 6446 * called. 6447 */ 6448 newnfs_nmcancelreqs(nmp); 6449 } 6450 6451 /* 6452 * Sum up the statfs info for each of the DSs, so that the client will 6453 * receive the total for all DSs. 6454 */ 6455 static int 6456 nfsrv_pnfsstatfs(struct statfs *sf, struct mount *mp) 6457 { 6458 struct statfs *tsf; 6459 struct nfsdevice *ds; 6460 struct vnode **dvpp, **tdvpp, *dvp; 6461 uint64_t tot; 6462 int cnt, error = 0, i; 6463 6464 if (nfsrv_devidcnt <= 0) 6465 return (ENXIO); 6466 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 6467 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 6468 6469 /* Get an array of the dvps for the DSs. */ 6470 tdvpp = dvpp; 6471 i = 0; 6472 NFSDDSLOCK(); 6473 /* First, search for matches for same file system. */ 6474 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6475 if (ds->nfsdev_nmp != NULL && ds->nfsdev_mdsisset != 0 && 6476 fsidcmp(&ds->nfsdev_mdsfsid, &mp->mnt_stat.f_fsid) == 0) { 6477 if (++i > nfsrv_devidcnt) 6478 break; 6479 *tdvpp++ = ds->nfsdev_dvp; 6480 } 6481 } 6482 /* 6483 * If no matches for same file system, total all servers not assigned 6484 * to a file system. 6485 */ 6486 if (i == 0) { 6487 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6488 if (ds->nfsdev_nmp != NULL && 6489 ds->nfsdev_mdsisset == 0) { 6490 if (++i > nfsrv_devidcnt) 6491 break; 6492 *tdvpp++ = ds->nfsdev_dvp; 6493 } 6494 } 6495 } 6496 NFSDDSUNLOCK(); 6497 cnt = i; 6498 6499 /* Do a VFS_STATFS() for each of the DSs and sum them up. */ 6500 tdvpp = dvpp; 6501 for (i = 0; i < cnt && error == 0; i++) { 6502 dvp = *tdvpp++; 6503 error = VFS_STATFS(dvp->v_mount, tsf); 6504 if (error == 0) { 6505 if (sf->f_bsize == 0) { 6506 if (tsf->f_bsize > 0) 6507 sf->f_bsize = tsf->f_bsize; 6508 else 6509 sf->f_bsize = 8192; 6510 } 6511 if (tsf->f_blocks > 0) { 6512 if (sf->f_bsize != tsf->f_bsize) { 6513 tot = tsf->f_blocks * tsf->f_bsize; 6514 sf->f_blocks += (tot / sf->f_bsize); 6515 } else 6516 sf->f_blocks += tsf->f_blocks; 6517 } 6518 if (tsf->f_bfree > 0) { 6519 if (sf->f_bsize != tsf->f_bsize) { 6520 tot = tsf->f_bfree * tsf->f_bsize; 6521 sf->f_bfree += (tot / sf->f_bsize); 6522 } else 6523 sf->f_bfree += tsf->f_bfree; 6524 } 6525 if (tsf->f_bavail > 0) { 6526 if (sf->f_bsize != tsf->f_bsize) { 6527 tot = tsf->f_bavail * tsf->f_bsize; 6528 sf->f_bavail += (tot / sf->f_bsize); 6529 } else 6530 sf->f_bavail += tsf->f_bavail; 6531 } 6532 } 6533 } 6534 free(tsf, M_TEMP); 6535 free(dvpp, M_TEMP); 6536 return (error); 6537 } 6538 6539 /* 6540 * Set an NFSv4 acl. 6541 */ 6542 int 6543 nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p) 6544 { 6545 int error; 6546 6547 if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) { 6548 error = NFSERR_ATTRNOTSUPP; 6549 goto out; 6550 } 6551 /* 6552 * With NFSv4 ACLs, chmod(2) may need to add additional entries. 6553 * Make sure it has enough room for that - splitting every entry 6554 * into two and appending "canonical six" entries at the end. 6555 * Cribbed out of kern/vfs_acl.c - Rick M. 6556 */ 6557 if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) { 6558 error = NFSERR_ATTRNOTSUPP; 6559 goto out; 6560 } 6561 error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p); 6562 if (error == 0) { 6563 error = nfsrv_dssetacl(vp, aclp, cred, p); 6564 if (error == ENOENT) 6565 error = 0; 6566 } 6567 6568 out: 6569 NFSEXITCODE(error); 6570 return (error); 6571 } 6572 6573 /* 6574 * Seek vnode op call (actually it is a VOP_IOCTL()). 6575 * This function is called with the vnode locked, but unlocks and vrele()s 6576 * the vp before returning. 6577 */ 6578 int 6579 nfsvno_seek(struct nfsrv_descript *nd, struct vnode *vp, u_long cmd, 6580 off_t *offp, int content, bool *eofp, struct ucred *cred, NFSPROC_T *p) 6581 { 6582 struct nfsvattr at; 6583 int error, ret; 6584 6585 ASSERT_VOP_LOCKED(vp, "nfsvno_seek vp"); 6586 /* 6587 * Attempt to seek on a DS file. A return of ENOENT implies 6588 * there is no DS file to seek on. 6589 */ 6590 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SEEKDS, NULL, 6591 NULL, NULL, NULL, NULL, offp, content, eofp); 6592 if (error != ENOENT) { 6593 vput(vp); 6594 return (error); 6595 } 6596 6597 /* 6598 * Do the VOP_IOCTL() call. For the case where *offp == file_size, 6599 * VOP_IOCTL() will return ENXIO. However, the correct reply for 6600 * NFSv4.2 is *eofp == true and error == 0 for this case. 6601 */ 6602 NFSVOPUNLOCK(vp); 6603 error = VOP_IOCTL(vp, cmd, offp, 0, cred, p); 6604 *eofp = false; 6605 if (error == ENXIO || (error == 0 && cmd == FIOSEEKHOLE)) { 6606 /* Handle the cases where we might be at EOF. */ 6607 ret = nfsvno_getattr(vp, &at, nd, p, 0, NULL); 6608 if (ret == 0 && *offp == at.na_size) { 6609 *eofp = true; 6610 error = 0; 6611 } 6612 if (ret != 0 && error == 0) 6613 error = ret; 6614 } 6615 vrele(vp); 6616 NFSEXITCODE(error); 6617 return (error); 6618 } 6619 6620 /* 6621 * Allocate vnode op call. 6622 */ 6623 int 6624 nfsvno_allocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6625 NFSPROC_T *p) 6626 { 6627 int error; 6628 off_t olen; 6629 6630 ASSERT_VOP_ELOCKED(vp, "nfsvno_allocate vp"); 6631 /* 6632 * Attempt to allocate on a DS file. A return of ENOENT implies 6633 * there is no DS file to allocate on. 6634 */ 6635 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_ALLOCATE, NULL, 6636 NULL, NULL, NULL, NULL, &len, 0, NULL); 6637 if (error != ENOENT) 6638 return (error); 6639 6640 /* 6641 * Do the actual VOP_ALLOCATE(), looping so long as 6642 * progress is being made, to achieve completion. 6643 */ 6644 do { 6645 olen = len; 6646 error = VOP_ALLOCATE(vp, &off, &len, IO_SYNC, cred); 6647 if (error == 0 && len > 0 && olen > len) 6648 maybe_yield(); 6649 } while (error == 0 && len > 0 && olen > len); 6650 if (error == 0 && len > 0) 6651 error = NFSERR_IO; 6652 NFSEXITCODE(error); 6653 return (error); 6654 } 6655 6656 /* 6657 * Deallocate vnode op call. 6658 */ 6659 int 6660 nfsvno_deallocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6661 NFSPROC_T *p) 6662 { 6663 int error; 6664 off_t olen; 6665 6666 ASSERT_VOP_ELOCKED(vp, "nfsvno_deallocate vp"); 6667 /* 6668 * Attempt to deallocate on a DS file. A return of ENOENT implies 6669 * there is no DS file to deallocate on. 6670 */ 6671 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_DEALLOCATE, NULL, 6672 NULL, NULL, NULL, NULL, &len, 0, NULL); 6673 if (error != ENOENT) 6674 return (error); 6675 6676 /* 6677 * Do the actual VOP_DEALLOCATE(), looping so long as 6678 * progress is being made, to achieve completion. 6679 */ 6680 do { 6681 olen = len; 6682 error = VOP_DEALLOCATE(vp, &off, &len, 0, IO_SYNC, cred); 6683 if (error == 0 && len > 0 && olen > len) 6684 maybe_yield(); 6685 } while (error == 0 && len > 0 && olen > len); 6686 if (error == 0 && len > 0) 6687 error = NFSERR_IO; 6688 NFSEXITCODE(error); 6689 return (error); 6690 } 6691 6692 /* 6693 * Get Extended Atribute vnode op into an mbuf list. 6694 */ 6695 int 6696 nfsvno_getxattr(struct vnode *vp, char *name, uint32_t maxresp, 6697 struct ucred *cred, uint64_t flag, int maxextsiz, struct thread *p, 6698 struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 6699 { 6700 struct iovec *iv; 6701 struct uio io, *uiop = &io; 6702 struct mbuf *m, *m2; 6703 int alen, error, len, tlen; 6704 size_t siz; 6705 6706 /* First, find out the size of the extended attribute. */ 6707 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6708 &siz, cred, p); 6709 if (error != 0) 6710 return (NFSERR_NOXATTR); 6711 if (siz > maxresp - NFS_MAXXDR) 6712 return (NFSERR_XATTR2BIG); 6713 len = siz; 6714 tlen = NFSM_RNDUP(len); 6715 if (tlen > 0) { 6716 /* 6717 * If cnt > MCLBYTES and the reply will not be saved, use 6718 * ext_pgs mbufs for TLS. 6719 * For NFSv4.0, we do not know for sure if the reply will 6720 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 6721 * Always use ext_pgs mbufs if ND_EXTPG is set. 6722 */ 6723 if ((flag & ND_EXTPG) != 0 || (tlen > MCLBYTES && 6724 (flag & (ND_TLS | ND_SAVEREPLY)) == ND_TLS && 6725 (flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4)) 6726 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(tlen, 6727 maxextsiz, &m, &m2, &iv); 6728 else 6729 uiop->uio_iovcnt = nfsrv_createiovec(tlen, &m, &m2, 6730 &iv); 6731 uiop->uio_iov = iv; 6732 } else { 6733 uiop->uio_iovcnt = 0; 6734 uiop->uio_iov = iv = NULL; 6735 m = m2 = NULL; 6736 } 6737 uiop->uio_offset = 0; 6738 uiop->uio_resid = tlen; 6739 uiop->uio_rw = UIO_READ; 6740 uiop->uio_segflg = UIO_SYSSPACE; 6741 uiop->uio_td = p; 6742 #ifdef MAC 6743 error = mac_vnode_check_getextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6744 name); 6745 if (error != 0) 6746 goto out; 6747 #endif 6748 6749 if (tlen > 0) 6750 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6751 NULL, cred, p); 6752 if (error != 0) 6753 goto out; 6754 if (uiop->uio_resid > 0) { 6755 alen = tlen; 6756 len = tlen - uiop->uio_resid; 6757 tlen = NFSM_RNDUP(len); 6758 if (alen != tlen) 6759 printf("nfsvno_getxattr: weird size read\n"); 6760 if (tlen == 0) { 6761 m_freem(m); 6762 m = m2 = NULL; 6763 } else if (alen != tlen || tlen != len) 6764 m2 = nfsrv_adj(m, alen - tlen, tlen - len); 6765 } 6766 *lenp = len; 6767 *mpp = m; 6768 *mpendp = m2; 6769 6770 out: 6771 if (error != 0) { 6772 if (m != NULL) 6773 m_freem(m); 6774 *lenp = 0; 6775 } 6776 free(iv, M_TEMP); 6777 NFSEXITCODE(error); 6778 return (error); 6779 } 6780 6781 /* 6782 * Set Extended attribute vnode op from an mbuf list. 6783 */ 6784 int 6785 nfsvno_setxattr(struct vnode *vp, char *name, int len, struct mbuf *m, 6786 char *cp, struct ucred *cred, struct thread *p) 6787 { 6788 struct iovec *iv; 6789 struct uio uio, *uiop = &uio; 6790 int cnt, error; 6791 6792 error = 0; 6793 #ifdef MAC 6794 error = mac_vnode_check_setextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6795 name); 6796 #endif 6797 if (error != 0) 6798 goto out; 6799 6800 uiop->uio_rw = UIO_WRITE; 6801 uiop->uio_segflg = UIO_SYSSPACE; 6802 uiop->uio_td = p; 6803 uiop->uio_offset = 0; 6804 uiop->uio_resid = len; 6805 if (len > 0) { 6806 error = nfsrv_createiovecw(len, m, cp, &iv, &cnt); 6807 uiop->uio_iov = iv; 6808 uiop->uio_iovcnt = cnt; 6809 } else { 6810 uiop->uio_iov = iv = NULL; 6811 uiop->uio_iovcnt = 0; 6812 } 6813 if (error == 0) { 6814 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6815 cred, p); 6816 if (error == 0) { 6817 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6818 nfsvno_updateds(vp, cred, p); 6819 error = VOP_FSYNC(vp, MNT_WAIT, p); 6820 } 6821 free(iv, M_TEMP); 6822 } 6823 6824 out: 6825 NFSEXITCODE(error); 6826 return (error); 6827 } 6828 6829 /* 6830 * For a pNFS server, the DS file's ctime and 6831 * va_filerev (TimeMetadata and Change) needs to 6832 * be updated. This is a hack, but works by 6833 * flipping the S_ISGID bit in va_mode and then 6834 * flipping it back. 6835 * It does result in two MDS->DS RPCs, but creating 6836 * a custom RPC just to do this seems overkill, since 6837 * Setxattr/Rmxattr will not be done that frequently. 6838 * If it fails part way through, that is not too 6839 * serious, since the DS file is never executed. 6840 */ 6841 static void 6842 nfsvno_updateds(struct vnode *vp, struct ucred *cred, NFSPROC_T *p) 6843 { 6844 struct nfsvattr nva; 6845 int ret; 6846 u_short tmode; 6847 6848 ret = VOP_GETATTR(vp, &nva.na_vattr, cred); 6849 if (ret == 0) { 6850 tmode = nva.na_mode; 6851 NFSVNO_ATTRINIT(&nva); 6852 tmode ^= S_ISGID; 6853 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6854 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6855 NFSPROC_SETATTR, NULL, NULL, NULL, &nva, 6856 NULL, NULL, 0, NULL); 6857 if (ret == 0) { 6858 tmode ^= S_ISGID; 6859 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6860 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6861 NFSPROC_SETATTR, NULL, NULL, NULL, 6862 &nva, NULL, NULL, 0, NULL); 6863 } 6864 } 6865 } 6866 6867 /* 6868 * Remove Extended attribute vnode op. 6869 */ 6870 int 6871 nfsvno_rmxattr(struct nfsrv_descript *nd, struct vnode *vp, char *name, 6872 struct ucred *cred, struct thread *p) 6873 { 6874 int error; 6875 6876 /* 6877 * Get rid of any delegations. I am not sure why this is required, 6878 * but RFC-8276 says so. 6879 */ 6880 error = nfsrv_checkremove(vp, 0, nd, nd->nd_clientid, p); 6881 if (error != 0) 6882 goto out; 6883 #ifdef MAC 6884 error = mac_vnode_check_deleteextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6885 name); 6886 if (error != 0) 6887 goto out; 6888 #endif 6889 6890 error = VOP_DELETEEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, cred, p); 6891 if (error == EOPNOTSUPP) 6892 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6893 cred, p); 6894 if (error == 0) { 6895 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6896 nfsvno_updateds(vp, cred, p); 6897 error = VOP_FSYNC(vp, MNT_WAIT, p); 6898 } 6899 out: 6900 NFSEXITCODE(error); 6901 return (error); 6902 } 6903 6904 /* 6905 * List Extended Atribute vnode op into an mbuf list. 6906 */ 6907 int 6908 nfsvno_listxattr(struct vnode *vp, uint64_t cookie, struct ucred *cred, 6909 struct thread *p, u_char **bufp, uint32_t *lenp, bool *eofp) 6910 { 6911 struct iovec iv; 6912 struct uio io; 6913 int error; 6914 size_t siz; 6915 6916 *bufp = NULL; 6917 /* First, find out the size of the extended attribute. */ 6918 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, NULL, &siz, cred, 6919 p); 6920 if (error != 0) 6921 return (NFSERR_NOXATTR); 6922 if (siz <= cookie) { 6923 *lenp = 0; 6924 *eofp = true; 6925 goto out; 6926 } 6927 if (siz > cookie + *lenp) { 6928 siz = cookie + *lenp; 6929 *eofp = false; 6930 } else 6931 *eofp = true; 6932 /* Just choose a sanity limit of 10Mbytes for malloc(M_TEMP). */ 6933 if (siz > 10 * 1024 * 1024) { 6934 error = NFSERR_XATTR2BIG; 6935 goto out; 6936 } 6937 *bufp = malloc(siz, M_TEMP, M_WAITOK); 6938 iv.iov_base = *bufp; 6939 iv.iov_len = siz; 6940 io.uio_iovcnt = 1; 6941 io.uio_iov = &iv; 6942 io.uio_offset = 0; 6943 io.uio_resid = siz; 6944 io.uio_rw = UIO_READ; 6945 io.uio_segflg = UIO_SYSSPACE; 6946 io.uio_td = p; 6947 #ifdef MAC 6948 error = mac_vnode_check_listextattr(cred, vp, EXTATTR_NAMESPACE_USER); 6949 if (error != 0) 6950 goto out; 6951 #endif 6952 6953 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, &io, NULL, cred, 6954 p); 6955 if (error != 0) 6956 goto out; 6957 if (io.uio_resid > 0) 6958 siz -= io.uio_resid; 6959 *lenp = siz; 6960 6961 out: 6962 if (error != 0) { 6963 free(*bufp, M_TEMP); 6964 *bufp = NULL; 6965 } 6966 NFSEXITCODE(error); 6967 return (error); 6968 } 6969 6970 /* 6971 * Trim trailing data off the mbuf list being built. 6972 */ 6973 void 6974 nfsm_trimtrailing(struct nfsrv_descript *nd, struct mbuf *mb, char *bpos, 6975 int bextpg, int bextpgsiz) 6976 { 6977 vm_page_t pg; 6978 int fullpgsiz, i; 6979 6980 if (mb->m_next != NULL) { 6981 m_freem(mb->m_next); 6982 mb->m_next = NULL; 6983 } 6984 if ((mb->m_flags & M_EXTPG) != 0) { 6985 KASSERT(bextpg >= 0 && bextpg < mb->m_epg_npgs, 6986 ("nfsm_trimtrailing: bextpg out of range")); 6987 KASSERT(bpos == (char *)(void *) 6988 PHYS_TO_DMAP(mb->m_epg_pa[bextpg]) + PAGE_SIZE - bextpgsiz, 6989 ("nfsm_trimtrailing: bextpgsiz bad!")); 6990 6991 /* First, get rid of any pages after this position. */ 6992 for (i = mb->m_epg_npgs - 1; i > bextpg; i--) { 6993 pg = PHYS_TO_VM_PAGE(mb->m_epg_pa[i]); 6994 vm_page_unwire_noq(pg); 6995 vm_page_free(pg); 6996 } 6997 mb->m_epg_npgs = bextpg + 1; 6998 if (bextpg == 0) 6999 fullpgsiz = PAGE_SIZE - mb->m_epg_1st_off; 7000 else 7001 fullpgsiz = PAGE_SIZE; 7002 mb->m_epg_last_len = fullpgsiz - bextpgsiz; 7003 mb->m_len = m_epg_pagelen(mb, 0, mb->m_epg_1st_off); 7004 for (i = 1; i < mb->m_epg_npgs; i++) 7005 mb->m_len += m_epg_pagelen(mb, i, 0); 7006 nd->nd_bextpgsiz = bextpgsiz; 7007 nd->nd_bextpg = bextpg; 7008 } else 7009 mb->m_len = bpos - mtod(mb, char *); 7010 nd->nd_mb = mb; 7011 nd->nd_bpos = bpos; 7012 } 7013 7014 7015 /* 7016 * Check to see if a put file handle operation should test for 7017 * NFSERR_WRONGSEC, although NFSv3 actually returns NFSERR_AUTHERR. 7018 * When Open is the next operation, NFSERR_WRONGSEC cannot be 7019 * replied for the Open cases that use a component. This can 7020 * be identified by the fact that the file handle's type is VDIR. 7021 */ 7022 bool 7023 nfsrv_checkwrongsec(struct nfsrv_descript *nd, int nextop, enum vtype vtyp) 7024 { 7025 7026 if ((nd->nd_flag & ND_NFSV4) == 0) 7027 return (true); 7028 7029 if ((nd->nd_flag & ND_LASTOP) != 0) 7030 return (false); 7031 7032 if (nextop == NFSV4OP_PUTROOTFH || nextop == NFSV4OP_PUTFH || 7033 nextop == NFSV4OP_PUTPUBFH || nextop == NFSV4OP_RESTOREFH || 7034 nextop == NFSV4OP_LOOKUP || nextop == NFSV4OP_LOOKUPP || 7035 nextop == NFSV4OP_SECINFO || nextop == NFSV4OP_SECINFONONAME) 7036 return (false); 7037 if (nextop == NFSV4OP_OPEN && vtyp == VDIR) 7038 return (false); 7039 return (true); 7040 } 7041 7042 /* 7043 * Check DSs marked no space. 7044 */ 7045 void 7046 nfsrv_checknospc(void) 7047 { 7048 struct statfs *tsf; 7049 struct nfsdevice *ds; 7050 struct vnode **dvpp, **tdvpp, *dvp; 7051 char *devid, *tdevid; 7052 int cnt, error = 0, i; 7053 7054 if (nfsrv_devidcnt <= 0) 7055 return; 7056 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 7057 devid = malloc(nfsrv_devidcnt * NFSX_V4DEVICEID, M_TEMP, M_WAITOK); 7058 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 7059 7060 /* Get an array of the dvps for the DSs. */ 7061 tdvpp = dvpp; 7062 tdevid = devid; 7063 i = 0; 7064 NFSDDSLOCK(); 7065 /* First, search for matches for same file system. */ 7066 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 7067 if (ds->nfsdev_nmp != NULL && ds->nfsdev_nospc) { 7068 if (++i > nfsrv_devidcnt) 7069 break; 7070 *tdvpp++ = ds->nfsdev_dvp; 7071 NFSBCOPY(ds->nfsdev_deviceid, tdevid, NFSX_V4DEVICEID); 7072 tdevid += NFSX_V4DEVICEID; 7073 } 7074 } 7075 NFSDDSUNLOCK(); 7076 7077 /* Do a VFS_STATFS() for each of the DSs and clear no space. */ 7078 cnt = i; 7079 tdvpp = dvpp; 7080 tdevid = devid; 7081 for (i = 0; i < cnt && error == 0; i++) { 7082 dvp = *tdvpp++; 7083 error = VFS_STATFS(dvp->v_mount, tsf); 7084 if (error == 0 && tsf->f_bavail > 0) { 7085 NFSD_DEBUG(1, "nfsrv_checknospc: reset nospc\n"); 7086 nfsrv_marknospc(tdevid, false); 7087 } 7088 tdevid += NFSX_V4DEVICEID; 7089 } 7090 free(tsf, M_TEMP); 7091 free(dvpp, M_TEMP); 7092 free(devid, M_TEMP); 7093 } 7094 7095 /* 7096 * Initialize everything that needs to be initialized for a vnet. 7097 */ 7098 static void 7099 nfsrv_vnetinit(const void *unused __unused) 7100 { 7101 7102 nfsd_mntinit(); 7103 } 7104 VNET_SYSINIT(nfsrv_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7105 nfsrv_vnetinit, NULL); 7106 7107 /* 7108 * Clean up everything that is in a vnet and needs to be 7109 * done when the jail is destroyed or the module unloaded. 7110 */ 7111 static void 7112 nfsrv_cleanup(const void *unused __unused) 7113 { 7114 int i; 7115 7116 NFSD_LOCK(); 7117 if (!NFSD_VNET(nfsrv_mntinited)) { 7118 NFSD_UNLOCK(); 7119 return; 7120 } 7121 NFSD_VNET(nfsrv_mntinited) = false; 7122 NFSD_UNLOCK(); 7123 7124 /* Clean out all NFSv4 state. */ 7125 nfsrv_throwawayallstate(curthread); 7126 7127 /* Clean the NFS server reply cache */ 7128 nfsrvd_cleancache(); 7129 7130 /* Clean out v4root exports. */ 7131 if (NFSD_VNET(nfsv4root_mnt)->mnt_export != NULL) { 7132 vfs_free_addrlist(NFSD_VNET(nfsv4root_mnt)->mnt_export); 7133 free(NFSD_VNET(nfsv4root_mnt)->mnt_export, M_MOUNT); 7134 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 7135 } 7136 7137 /* Free up the krpc server pool. */ 7138 if (NFSD_VNET(nfsrvd_pool) != NULL) 7139 svcpool_destroy(NFSD_VNET(nfsrvd_pool)); 7140 7141 /* and get rid of the locks */ 7142 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 7143 mtx_destroy(&NFSD_VNET(nfsrchash_table)[i].mtx); 7144 mtx_destroy(&NFSD_VNET(nfsrcahash_table)[i].mtx); 7145 } 7146 mtx_destroy(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx); 7147 for (i = 0; i < nfsrv_sessionhashsize; i++) 7148 mtx_destroy(&NFSD_VNET(nfssessionhash)[i].mtx); 7149 lockdestroy(&NFSD_VNET(nfsv4root_mnt)->mnt_explock); 7150 free(NFSD_VNET(nfsrvudphashtbl), M_NFSRVCACHE); 7151 free(NFSD_VNET(nfsrchash_table), M_NFSRVCACHE); 7152 free(NFSD_VNET(nfsrcahash_table), M_NFSRVCACHE); 7153 free(NFSD_VNET(nfsclienthash), M_NFSDCLIENT); 7154 free(NFSD_VNET(nfslockhash), M_NFSDLOCKFILE); 7155 free(NFSD_VNET(nfssessionhash), M_NFSDSESSION); 7156 free(NFSD_VNET(nfsv4root_mnt), M_TEMP); 7157 NFSD_VNET(nfsv4root_mnt) = NULL; 7158 } 7159 VNET_SYSUNINIT(nfsrv_cleanup, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7160 nfsrv_cleanup, NULL); 7161 7162 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 7163 7164 /* 7165 * Called once to initialize data structures... 7166 */ 7167 static int 7168 nfsd_modevent(module_t mod, int type, void *data) 7169 { 7170 int error = 0, i; 7171 static int loaded = 0; 7172 7173 switch (type) { 7174 case MOD_LOAD: 7175 if (loaded) 7176 goto out; 7177 newnfs_portinit(); 7178 mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); 7179 mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); 7180 mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF); 7181 mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF); 7182 #ifdef VV_DISABLEDELEG 7183 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 7184 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 7185 #endif 7186 nfsd_call_nfsd = nfssvc_nfsd; 7187 loaded = 1; 7188 break; 7189 7190 case MOD_UNLOAD: 7191 if (newnfs_numnfsd != 0) { 7192 error = EBUSY; 7193 break; 7194 } 7195 7196 #ifdef VV_DISABLEDELEG 7197 vn_deleg_ops.vndeleg_recall = NULL; 7198 vn_deleg_ops.vndeleg_disable = NULL; 7199 #endif 7200 nfsd_call_nfsd = NULL; 7201 mtx_destroy(&nfsrc_udpmtx); 7202 mtx_destroy(&nfs_v4root_mutex); 7203 mtx_destroy(&nfsrv_dontlistlock_mtx); 7204 mtx_destroy(&nfsrv_recalllock_mtx); 7205 if (nfslayouthash != NULL) { 7206 for (i = 0; i < nfsrv_layouthashsize; i++) 7207 mtx_destroy(&nfslayouthash[i].mtx); 7208 free(nfslayouthash, M_NFSDSESSION); 7209 } 7210 loaded = 0; 7211 break; 7212 default: 7213 error = EOPNOTSUPP; 7214 break; 7215 } 7216 7217 out: 7218 NFSEXITCODE(error); 7219 return (error); 7220 } 7221 static moduledata_t nfsd_mod = { 7222 "nfsd", 7223 nfsd_modevent, 7224 NULL, 7225 }; 7226 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 7227 7228 /* So that loader and kldload(2) can find us, wherever we are.. */ 7229 MODULE_VERSION(nfsd, 1); 7230 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 7231 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 7232 MODULE_DEPEND(nfsd, krpc, 1, 1, 1); 7233 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 7234