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/capsicum.h> 37 #include <sys/extattr.h> 38 39 /* 40 * Functions that perform the vfs operations required by the routines in 41 * nfsd_serv.c. It is hoped that this change will make the server more 42 * portable. 43 */ 44 45 #include <fs/nfs/nfsport.h> 46 #include <security/mac/mac_framework.h> 47 #include <sys/callout.h> 48 #include <sys/filio.h> 49 #include <sys/hash.h> 50 #include <sys/osd.h> 51 #include <sys/sysctl.h> 52 #include <nlm/nlm_prot.h> 53 #include <nlm/nlm.h> 54 #include <vm/vm_param.h> 55 #include <vm/vnode_pager.h> 56 57 FEATURE(nfsd, "NFSv4 server"); 58 59 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 60 extern int nfsrv_useacl; 61 extern int newnfs_numnfsd; 62 extern int nfsrv_sessionhashsize; 63 extern struct nfslayouthash *nfslayouthash; 64 extern int nfsrv_layouthashsize; 65 extern struct mtx nfsrv_dslock_mtx; 66 extern int nfs_pnfsiothreads; 67 extern volatile int nfsrv_devidcnt; 68 extern int nfsrv_maxpnfsmirror; 69 extern uint32_t nfs_srvmaxio; 70 extern int nfs_bufpackets; 71 extern u_long sb_max_adj; 72 extern struct nfsv4lock nfsv4rootfs_lock; 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 /* Map d_type to vnode type. */ 123 static uint8_t dtype_to_vnode[DT_WHT + 1] = { VNON, VFIFO, VCHR, VNON, VDIR, 124 VNON, VBLK, VNON, VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON }; 125 #define NFS_DTYPETOVTYPE(t) ((t) <= DT_WHT ? dtype_to_vnode[(t)] : VNON) 126 127 static int nfsrv_createiovec(int, struct mbuf **, struct mbuf **, 128 struct iovec **); 129 static int nfsrv_createiovec_extpgs(int, int, struct mbuf **, 130 struct mbuf **, struct iovec **); 131 static int nfsrv_createiovecw(int, struct mbuf *, char *, struct iovec **, 132 int *); 133 static void nfsrv_pnfscreate(struct vnode *, struct vattr *, struct ucred *, 134 NFSPROC_T *); 135 static void nfsrv_pnfsremovesetup(struct vnode *, NFSPROC_T *, struct vnode **, 136 int *, char *, fhandle_t *); 137 static void nfsrv_pnfsremove(struct vnode **, int, char *, fhandle_t *, 138 NFSPROC_T *); 139 static int nfsrv_proxyds(struct vnode *, off_t, int, struct ucred *, 140 struct thread *, int, struct mbuf **, char *, struct mbuf **, 141 struct nfsvattr *, struct acl *, off_t *, int, bool *); 142 static int nfsrv_setextattr(struct vnode *, struct nfsvattr *, NFSPROC_T *); 143 static int nfsrv_readdsrpc(fhandle_t *, off_t, int, struct ucred *, 144 NFSPROC_T *, struct nfsmount *, struct mbuf **, struct mbuf **); 145 static int nfsrv_writedsrpc(fhandle_t *, off_t, int, struct ucred *, 146 NFSPROC_T *, struct vnode *, struct nfsmount **, int, struct mbuf **, 147 char *, int *); 148 static int nfsrv_allocatedsrpc(fhandle_t *, off_t, off_t, struct ucred *, 149 NFSPROC_T *, struct vnode *, struct nfsmount **, int, int *); 150 static int nfsrv_deallocatedsrpc(fhandle_t *, off_t, off_t, struct ucred *, 151 NFSPROC_T *, struct vnode *, struct nfsmount **, int, int *); 152 static int nfsrv_setacldsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 153 struct vnode *, struct nfsmount **, int, struct acl *, int *); 154 static int nfsrv_setattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 155 struct vnode *, struct nfsmount **, int, struct nfsvattr *, int *); 156 static int nfsrv_getattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *, 157 struct vnode *, struct nfsmount *, struct nfsvattr *); 158 static int nfsrv_seekdsrpc(fhandle_t *, off_t *, int, bool *, struct ucred *, 159 NFSPROC_T *, struct nfsmount *); 160 static int nfsrv_putfhname(fhandle_t *, char *); 161 static int nfsrv_pnfslookupds(struct vnode *, struct vnode *, 162 struct pnfsdsfile *, struct vnode **, NFSPROC_T *); 163 static void nfsrv_pnfssetfh(struct vnode *, struct pnfsdsfile *, char *, char *, 164 struct vnode *, NFSPROC_T *); 165 static int nfsrv_dsremove(struct vnode *, char *, struct ucred *, NFSPROC_T *); 166 static int nfsrv_dssetacl(struct vnode *, struct acl *, struct ucred *, 167 NFSPROC_T *); 168 static int nfsrv_pnfsstatfs(struct statfs *, struct mount *); 169 170 int nfs_pnfsio(task_fn_t *, void *); 171 172 SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 173 "NFS server"); 174 SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 175 &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 176 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 177 0, ""); 178 SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 179 0, ""); 180 SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 181 &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 182 SYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel, 183 0, "Debug level for NFS server"); 184 NFSD_VNET_DECLARE(int, nfsd_enable_stringtouid); 185 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, 186 CTLFLAG_NFSD_VNET | CTLFLAG_RW, &NFSD_VNET_NAME(nfsd_enable_stringtouid), 187 0, "Enable nfsd to accept numeric owner_names"); 188 static int nfsrv_pnfsgetdsattr = 1; 189 SYSCTL_INT(_vfs_nfsd, OID_AUTO, pnfsgetdsattr, CTLFLAG_RW, 190 &nfsrv_pnfsgetdsattr, 0, "When set getattr gets DS attributes via RPC"); 191 192 /* 193 * nfsrv_dsdirsize can only be increased and only when the nfsd threads are 194 * not running. 195 * The dsN subdirectories for the increased values must have been created 196 * on all DS servers before this increase is done. 197 */ 198 u_int nfsrv_dsdirsize = 20; 199 static int 200 sysctl_dsdirsize(SYSCTL_HANDLER_ARGS) 201 { 202 int error, newdsdirsize; 203 204 newdsdirsize = nfsrv_dsdirsize; 205 error = sysctl_handle_int(oidp, &newdsdirsize, 0, req); 206 if (error != 0 || req->newptr == NULL) 207 return (error); 208 if (newdsdirsize <= nfsrv_dsdirsize || newdsdirsize > 10000 || 209 newnfs_numnfsd != 0) 210 return (EINVAL); 211 nfsrv_dsdirsize = newdsdirsize; 212 return (0); 213 } 214 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, dsdirsize, 215 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, 0, sizeof(nfsrv_dsdirsize), 216 sysctl_dsdirsize, "IU", "Number of dsN subdirs on the DS servers"); 217 218 /* 219 * nfs_srvmaxio can only be increased and only when the nfsd threads are 220 * not running. The setting must be a power of 2, with the current limit of 221 * 1Mbyte. 222 */ 223 static int 224 sysctl_srvmaxio(SYSCTL_HANDLER_ARGS) 225 { 226 int error; 227 u_int newsrvmaxio; 228 uint64_t tval; 229 230 newsrvmaxio = nfs_srvmaxio; 231 error = sysctl_handle_int(oidp, &newsrvmaxio, 0, req); 232 if (error != 0 || req->newptr == NULL) 233 return (error); 234 if (newsrvmaxio == nfs_srvmaxio) 235 return (0); 236 if (newsrvmaxio < nfs_srvmaxio) { 237 printf("nfsd: vfs.nfsd.srvmaxio can only be increased\n"); 238 return (EINVAL); 239 } 240 if (newsrvmaxio > 1048576) { 241 printf("nfsd: vfs.nfsd.srvmaxio cannot be > 1Mbyte\n"); 242 return (EINVAL); 243 } 244 if ((newsrvmaxio & (newsrvmaxio - 1)) != 0) { 245 printf("nfsd: vfs.nfsd.srvmaxio must be a power of 2\n"); 246 return (EINVAL); 247 } 248 249 /* 250 * Check that kern.ipc.maxsockbuf is large enough for 251 * newsrviomax, given the setting of vfs.nfs.bufpackets. 252 */ 253 if ((newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets > 254 sb_max_adj) { 255 /* 256 * Suggest vfs.nfs.bufpackets * maximum RPC message for 257 * sb_max_adj. 258 */ 259 tval = (newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets; 260 261 /* 262 * Convert suggested sb_max_adj value to a suggested 263 * sb_max value, which is what is set via kern.ipc.maxsockbuf. 264 * Perform the inverse calculation of (from uipc_sockbuf.c): 265 * sb_max_adj = (u_quad_t)sb_max * MCLBYTES / 266 * (MSIZE + MCLBYTES); 267 * XXX If the calculation of sb_max_adj from sb_max changes, 268 * this calculation must be changed as well. 269 */ 270 tval *= (MSIZE + MCLBYTES); /* Brackets for readability. */ 271 tval += MCLBYTES - 1; /* Round up divide. */ 272 tval /= MCLBYTES; 273 printf("nfsd: set kern.ipc.maxsockbuf to a minimum of " 274 "%ju to support %ubyte NFS I/O\n", (uintmax_t)tval, 275 newsrvmaxio); 276 return (EINVAL); 277 } 278 279 NFSD_LOCK(); 280 if (newnfs_numnfsd != 0) { 281 NFSD_UNLOCK(); 282 printf("nfsd: cannot set vfs.nfsd.srvmaxio when nfsd " 283 "threads are running\n"); 284 return (EINVAL); 285 } 286 287 288 nfs_srvmaxio = newsrvmaxio; 289 NFSD_UNLOCK(); 290 return (0); 291 } 292 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, srvmaxio, 293 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, NULL, 0, 294 sysctl_srvmaxio, "IU", "Maximum I/O size in bytes"); 295 296 static int 297 sysctl_dolocallocks(SYSCTL_HANDLER_ARGS) 298 { 299 int error, igotlock, newdolocallocks; 300 301 newdolocallocks = nfsrv_dolocallocks; 302 error = sysctl_handle_int(oidp, &newdolocallocks, 0, req); 303 if (error != 0 || req->newptr == NULL) 304 return (error); 305 if (newdolocallocks == nfsrv_dolocallocks) 306 return (0); 307 if (jailed(curthread->td_ucred)) 308 return (EINVAL); 309 310 NFSLOCKV4ROOTMUTEX(); 311 do { 312 igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 313 NFSV4ROOTLOCKMUTEXPTR, NULL); 314 } while (!igotlock); 315 NFSUNLOCKV4ROOTMUTEX(); 316 317 nfsrv_dolocallocks = newdolocallocks; 318 319 NFSLOCKV4ROOTMUTEX(); 320 nfsv4_unlock(&nfsv4rootfs_lock, 0); 321 NFSUNLOCKV4ROOTMUTEX(); 322 return (0); 323 } 324 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, enable_locallocks, 325 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RW, NULL, 0, 326 sysctl_dolocallocks, "IU", "Enable nfsd to acquire local locks on files"); 327 328 #define MAX_REORDERED_RPC 16 329 #define NUM_HEURISTIC 1031 330 #define NHUSE_INIT 64 331 #define NHUSE_INC 16 332 #define NHUSE_MAX 2048 333 334 static struct nfsheur { 335 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 336 off_t nh_nextoff; /* next offset for sequential detection */ 337 int nh_use; /* use count for selection */ 338 int nh_seqcount; /* heuristic */ 339 } nfsheur[NUM_HEURISTIC]; 340 341 /* 342 * Heuristic to detect sequential operation. 343 */ 344 static struct nfsheur * 345 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 346 { 347 struct nfsheur *nh; 348 int hi, try; 349 350 /* Locate best candidate. */ 351 try = 32; 352 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 353 nh = &nfsheur[hi]; 354 while (try--) { 355 if (nfsheur[hi].nh_vp == vp) { 356 nh = &nfsheur[hi]; 357 break; 358 } 359 if (nfsheur[hi].nh_use > 0) 360 --nfsheur[hi].nh_use; 361 hi = (hi + 1) % NUM_HEURISTIC; 362 if (nfsheur[hi].nh_use < nh->nh_use) 363 nh = &nfsheur[hi]; 364 } 365 366 /* Initialize hint if this is a new file. */ 367 if (nh->nh_vp != vp) { 368 nh->nh_vp = vp; 369 nh->nh_nextoff = uio->uio_offset; 370 nh->nh_use = NHUSE_INIT; 371 if (uio->uio_offset == 0) 372 nh->nh_seqcount = 4; 373 else 374 nh->nh_seqcount = 1; 375 } 376 377 /* Calculate heuristic. */ 378 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 379 uio->uio_offset == nh->nh_nextoff) { 380 /* See comments in vfs_vnops.c:sequential_heuristic(). */ 381 nh->nh_seqcount += howmany(uio->uio_resid, 16384); 382 if (nh->nh_seqcount > IO_SEQMAX) 383 nh->nh_seqcount = IO_SEQMAX; 384 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 385 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 386 /* Probably a reordered RPC, leave seqcount alone. */ 387 } else if (nh->nh_seqcount > 1) { 388 nh->nh_seqcount /= 2; 389 } else { 390 nh->nh_seqcount = 0; 391 } 392 nh->nh_use += NHUSE_INC; 393 if (nh->nh_use > NHUSE_MAX) 394 nh->nh_use = NHUSE_MAX; 395 return (nh); 396 } 397 398 /* 399 * Get attributes into nfsvattr structure. 400 */ 401 int 402 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, 403 struct nfsrv_descript *nd, struct thread *p, int vpislocked, 404 nfsattrbit_t *attrbitp) 405 { 406 int error, gotattr, lockedit = 0; 407 struct nfsvattr na; 408 409 if (vpislocked == 0) { 410 /* 411 * When vpislocked == 0, the vnode is either exclusively 412 * locked by this thread or not locked by this thread. 413 * As such, shared lock it, if not exclusively locked. 414 */ 415 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 416 lockedit = 1; 417 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 418 } 419 } 420 421 /* 422 * Acquire the Change, Size, TimeAccess, TimeModify and SpaceUsed 423 * attributes, as required. 424 * This needs to be done for regular files if: 425 * - non-NFSv4 RPCs or 426 * - when attrbitp == NULL or 427 * - an NFSv4 RPC with any of the above attributes in attrbitp. 428 * A return of 0 for nfsrv_proxyds() indicates that it has acquired 429 * these attributes. nfsrv_proxyds() will return an error if the 430 * server is not a pNFS one. 431 */ 432 gotattr = 0; 433 if (vp->v_type == VREG && nfsrv_devidcnt > 0 && (attrbitp == NULL || 434 (nd->nd_flag & ND_NFSV4) == 0 || 435 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_CHANGE) || 436 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) || 437 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESS) || 438 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFY) || 439 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEUSED))) { 440 error = nfsrv_proxyds(vp, 0, 0, nd->nd_cred, p, 441 NFSPROC_GETATTR, NULL, NULL, NULL, &na, NULL, NULL, 0, 442 NULL); 443 if (error == 0) 444 gotattr = 1; 445 } 446 447 error = VOP_GETATTR(vp, &nvap->na_vattr, nd->nd_cred); 448 if (lockedit != 0) 449 NFSVOPUNLOCK(vp); 450 451 /* 452 * If we got the Change, Size and Modify Time from the DS, 453 * replace them. 454 */ 455 if (gotattr != 0) { 456 nvap->na_atime = na.na_atime; 457 nvap->na_mtime = na.na_mtime; 458 nvap->na_filerev = na.na_filerev; 459 nvap->na_size = na.na_size; 460 nvap->na_bytes = na.na_bytes; 461 } 462 NFSD_DEBUG(4, "nfsvno_getattr: gotattr=%d err=%d chg=%ju\n", gotattr, 463 error, (uintmax_t)na.na_filerev); 464 465 NFSEXITCODE(error); 466 return (error); 467 } 468 469 /* 470 * Get a file handle for a vnode. 471 */ 472 int 473 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 474 { 475 int error; 476 477 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 478 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 479 error = VOP_VPTOFH(vp, &fhp->fh_fid); 480 481 NFSEXITCODE(error); 482 return (error); 483 } 484 485 /* 486 * Perform access checking for vnodes obtained from file handles that would 487 * refer to files already opened by a Unix client. You cannot just use 488 * vn_writechk() and VOP_ACCESSX() for two reasons. 489 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 490 * case. 491 * 2 - The owner is to be given access irrespective of mode bits for some 492 * operations, so that processes that chmod after opening a file don't 493 * break. 494 */ 495 int 496 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 497 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 498 u_int32_t *supportedtypep) 499 { 500 struct vattr vattr; 501 int error = 0, getret = 0; 502 503 if (vpislocked == 0) { 504 if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 505 error = EPERM; 506 goto out; 507 } 508 } 509 if (accmode & VWRITE) { 510 /* Just vn_writechk() changed to check rdonly */ 511 /* 512 * Disallow write attempts on read-only file systems; 513 * unless the file is a socket or a block or character 514 * device resident on the file system. 515 */ 516 if (NFSVNO_EXRDONLY(exp) || 517 (vp->v_mount->mnt_flag & MNT_RDONLY)) { 518 switch (vp->v_type) { 519 case VREG: 520 case VDIR: 521 case VLNK: 522 error = EROFS; 523 default: 524 break; 525 } 526 } 527 /* 528 * If there's shared text associated with 529 * the inode, try to free it up once. If 530 * we fail, we can't allow writing. 531 */ 532 if (VOP_IS_TEXT(vp) && error == 0) 533 error = ETXTBSY; 534 } 535 if (error != 0) { 536 if (vpislocked == 0) 537 NFSVOPUNLOCK(vp); 538 goto out; 539 } 540 541 /* 542 * Should the override still be applied when ACLs are enabled? 543 */ 544 error = VOP_ACCESSX(vp, accmode, cred, p); 545 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 546 /* 547 * Try again with VEXPLICIT_DENY, to see if the test for 548 * deletion is supported. 549 */ 550 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 551 if (error == 0) { 552 if (vp->v_type == VDIR) { 553 accmode &= ~(VDELETE | VDELETE_CHILD); 554 accmode |= VWRITE; 555 error = VOP_ACCESSX(vp, accmode, cred, p); 556 } else if (supportedtypep != NULL) { 557 *supportedtypep &= ~NFSACCESS_DELETE; 558 } 559 } 560 } 561 562 /* 563 * Allow certain operations for the owner (reads and writes 564 * on files that are already open). 565 */ 566 if (override != NFSACCCHK_NOOVERRIDE && 567 (error == EPERM || error == EACCES)) { 568 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 569 error = 0; 570 else if (override & NFSACCCHK_ALLOWOWNER) { 571 getret = VOP_GETATTR(vp, &vattr, cred); 572 if (getret == 0 && cred->cr_uid == vattr.va_uid) 573 error = 0; 574 } 575 } 576 if (vpislocked == 0) 577 NFSVOPUNLOCK(vp); 578 579 out: 580 NFSEXITCODE(error); 581 return (error); 582 } 583 584 /* 585 * Set attribute(s) vnop. 586 */ 587 int 588 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 589 struct thread *p, struct nfsexstuff *exp) 590 { 591 u_quad_t savsize = 0; 592 int error, savedit; 593 time_t savbtime; 594 595 /* 596 * If this is an exported file system and a pNFS service is running, 597 * don't VOP_SETATTR() of size for the MDS file system. 598 */ 599 savedit = 0; 600 error = 0; 601 if (vp->v_type == VREG && (vp->v_mount->mnt_flag & MNT_EXPORTED) != 0 && 602 nfsrv_devidcnt != 0 && nvap->na_vattr.va_size != VNOVAL && 603 nvap->na_vattr.va_size > 0) { 604 savsize = nvap->na_vattr.va_size; 605 nvap->na_vattr.va_size = VNOVAL; 606 if (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 607 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 608 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 609 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 610 nvap->na_vattr.va_mtime.tv_sec != VNOVAL) 611 savedit = 1; 612 else 613 savedit = 2; 614 } 615 if (savedit != 2) 616 error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 617 if (savedit != 0) 618 nvap->na_vattr.va_size = savsize; 619 if (error == 0 && (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 620 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 621 nvap->na_vattr.va_size != VNOVAL || 622 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 623 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 624 nvap->na_vattr.va_mtime.tv_sec != VNOVAL)) { 625 /* Never modify birthtime on a DS file. */ 626 savbtime = nvap->na_vattr.va_birthtime.tv_sec; 627 nvap->na_vattr.va_birthtime.tv_sec = VNOVAL; 628 /* For a pNFS server, set the attributes on the DS file. */ 629 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETATTR, 630 NULL, NULL, NULL, nvap, NULL, NULL, 0, NULL); 631 nvap->na_vattr.va_birthtime.tv_sec = savbtime; 632 if (error == ENOENT) 633 error = 0; 634 } 635 NFSEXITCODE(error); 636 return (error); 637 } 638 639 /* 640 * Set up nameidata for a lookup() call and do it. 641 */ 642 int 643 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 644 struct vnode *dp, int islocked, struct nfsexstuff *exp, 645 struct vnode **retdirp) 646 { 647 struct componentname *cnp = &ndp->ni_cnd; 648 int i; 649 struct iovec aiov; 650 struct uio auio; 651 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 652 int error = 0; 653 char *cp; 654 655 *retdirp = NULL; 656 cnp->cn_nameptr = cnp->cn_pnbuf; 657 ndp->ni_lcf = 0; 658 /* 659 * Extract and set starting directory. 660 */ 661 if (dp->v_type != VDIR) { 662 if (islocked) 663 vput(dp); 664 else 665 vrele(dp); 666 nfsvno_relpathbuf(ndp); 667 error = ENOTDIR; 668 goto out1; 669 } 670 if (islocked) 671 NFSVOPUNLOCK(dp); 672 VREF(dp); 673 *retdirp = dp; 674 if (NFSVNO_EXRDONLY(exp)) 675 cnp->cn_flags |= RDONLY; 676 ndp->ni_segflg = UIO_SYSSPACE; 677 678 if (nd->nd_flag & ND_PUBLOOKUP) { 679 ndp->ni_loopcnt = 0; 680 if (cnp->cn_pnbuf[0] == '/') { 681 vrele(dp); 682 /* 683 * Check for degenerate pathnames here, since lookup() 684 * panics on them. 685 */ 686 for (i = 1; i < ndp->ni_pathlen; i++) 687 if (cnp->cn_pnbuf[i] != '/') 688 break; 689 if (i == ndp->ni_pathlen) { 690 error = NFSERR_ACCES; 691 goto out; 692 } 693 dp = rootvnode; 694 VREF(dp); 695 } 696 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 697 (nd->nd_flag & ND_NFSV4) == 0) { 698 /* 699 * Only cross mount points for NFSv4 when doing a 700 * mount while traversing the file system above 701 * the mount point, unless nfsrv_enable_crossmntpt is set. 702 */ 703 cnp->cn_flags |= NOCROSSMOUNT; 704 } 705 706 /* 707 * Initialize for scan, set ni_startdir and bump ref on dp again 708 * because lookup() will dereference ni_startdir. 709 */ 710 711 ndp->ni_startdir = dp; 712 ndp->ni_rootdir = rootvnode; 713 ndp->ni_topdir = NULL; 714 715 if (!lockleaf) 716 cnp->cn_flags |= LOCKLEAF; 717 for (;;) { 718 cnp->cn_nameptr = cnp->cn_pnbuf; 719 /* 720 * Call lookup() to do the real work. If an error occurs, 721 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 722 * we do not have to dereference anything before returning. 723 * In either case ni_startdir will be dereferenced and NULLed 724 * out. 725 */ 726 error = vfs_lookup(ndp); 727 if (error) 728 break; 729 730 /* 731 * Check for encountering a symbolic link. Trivial 732 * termination occurs if no symlink encountered. 733 */ 734 if ((cnp->cn_flags & ISSYMLINK) == 0) { 735 if (ndp->ni_vp && !lockleaf) 736 NFSVOPUNLOCK(ndp->ni_vp); 737 break; 738 } 739 740 /* 741 * Validate symlink 742 */ 743 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 744 NFSVOPUNLOCK(ndp->ni_dvp); 745 if (!(nd->nd_flag & ND_PUBLOOKUP)) { 746 error = EINVAL; 747 goto badlink2; 748 } 749 750 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 751 error = ELOOP; 752 goto badlink2; 753 } 754 if (ndp->ni_pathlen > 1) 755 cp = uma_zalloc(namei_zone, M_WAITOK); 756 else 757 cp = cnp->cn_pnbuf; 758 aiov.iov_base = cp; 759 aiov.iov_len = MAXPATHLEN; 760 auio.uio_iov = &aiov; 761 auio.uio_iovcnt = 1; 762 auio.uio_offset = 0; 763 auio.uio_rw = UIO_READ; 764 auio.uio_segflg = UIO_SYSSPACE; 765 auio.uio_td = NULL; 766 auio.uio_resid = MAXPATHLEN; 767 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 768 if (error) { 769 badlink1: 770 if (ndp->ni_pathlen > 1) 771 uma_zfree(namei_zone, cp); 772 badlink2: 773 vrele(ndp->ni_dvp); 774 vput(ndp->ni_vp); 775 break; 776 } 777 linklen = MAXPATHLEN - auio.uio_resid; 778 if (linklen == 0) { 779 error = ENOENT; 780 goto badlink1; 781 } 782 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 783 error = ENAMETOOLONG; 784 goto badlink1; 785 } 786 787 /* 788 * Adjust or replace path 789 */ 790 if (ndp->ni_pathlen > 1) { 791 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 792 uma_zfree(namei_zone, cnp->cn_pnbuf); 793 cnp->cn_pnbuf = cp; 794 } else 795 cnp->cn_pnbuf[linklen] = '\0'; 796 ndp->ni_pathlen += linklen; 797 798 /* 799 * Cleanup refs for next loop and check if root directory 800 * should replace current directory. Normally ni_dvp 801 * becomes the new base directory and is cleaned up when 802 * we loop. Explicitly null pointers after invalidation 803 * to clarify operation. 804 */ 805 vput(ndp->ni_vp); 806 ndp->ni_vp = NULL; 807 808 if (cnp->cn_pnbuf[0] == '/') { 809 vrele(ndp->ni_dvp); 810 ndp->ni_dvp = ndp->ni_rootdir; 811 VREF(ndp->ni_dvp); 812 } 813 ndp->ni_startdir = ndp->ni_dvp; 814 ndp->ni_dvp = NULL; 815 } 816 if (!lockleaf) 817 cnp->cn_flags &= ~LOCKLEAF; 818 819 out: 820 if (error) { 821 nfsvno_relpathbuf(ndp); 822 ndp->ni_vp = NULL; 823 ndp->ni_dvp = NULL; 824 ndp->ni_startdir = NULL; 825 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 826 ndp->ni_dvp = NULL; 827 } 828 829 out1: 830 NFSEXITCODE2(error, nd); 831 return (error); 832 } 833 834 /* 835 * Set up a pathname buffer and return a pointer to it and, optionally 836 * set a hash pointer. 837 */ 838 void 839 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 840 { 841 struct componentname *cnp = &ndp->ni_cnd; 842 843 cnp->cn_flags |= (NOMACCHECK); 844 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 845 if (hashpp != NULL) 846 *hashpp = NULL; 847 *bufpp = cnp->cn_pnbuf; 848 } 849 850 /* 851 * Release the above path buffer, if not released by nfsvno_namei(). 852 */ 853 void 854 nfsvno_relpathbuf(struct nameidata *ndp) 855 { 856 857 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 858 ndp->ni_cnd.cn_pnbuf = NULL; 859 } 860 861 /* 862 * Readlink vnode op into an mbuf list. 863 */ 864 int 865 nfsvno_readlink(struct vnode *vp, struct ucred *cred, int maxextsiz, 866 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 867 { 868 struct iovec *iv; 869 struct uio io, *uiop = &io; 870 struct mbuf *mp, *mp3; 871 int len, tlen, error = 0; 872 873 len = NFS_MAXPATHLEN; 874 if (maxextsiz > 0) 875 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 876 &mp3, &mp, &iv); 877 else 878 uiop->uio_iovcnt = nfsrv_createiovec(len, &mp3, &mp, &iv); 879 uiop->uio_iov = iv; 880 uiop->uio_offset = 0; 881 uiop->uio_resid = len; 882 uiop->uio_rw = UIO_READ; 883 uiop->uio_segflg = UIO_SYSSPACE; 884 uiop->uio_td = NULL; 885 error = VOP_READLINK(vp, uiop, cred); 886 free(iv, M_TEMP); 887 if (error) { 888 m_freem(mp3); 889 *lenp = 0; 890 goto out; 891 } 892 if (uiop->uio_resid > 0) { 893 len -= uiop->uio_resid; 894 tlen = NFSM_RNDUP(len); 895 if (tlen == 0) { 896 m_freem(mp3); 897 mp3 = mp = NULL; 898 } else if (tlen != NFS_MAXPATHLEN || tlen != len) 899 mp = nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, 900 tlen - len); 901 } 902 *lenp = len; 903 *mpp = mp3; 904 *mpendp = mp; 905 906 out: 907 NFSEXITCODE(error); 908 return (error); 909 } 910 911 /* 912 * Create an mbuf chain and an associated iovec that can be used to Read 913 * or Getextattr of data. 914 * Upon success, return pointers to the first and last mbufs in the chain 915 * plus the malloc'd iovec and its iovlen. 916 */ 917 static int 918 nfsrv_createiovec(int len, struct mbuf **mpp, struct mbuf **mpendp, 919 struct iovec **ivp) 920 { 921 struct mbuf *m, *m2 = NULL, *m3; 922 struct iovec *iv; 923 int i, left, siz; 924 925 left = len; 926 m3 = NULL; 927 /* 928 * Generate the mbuf list with the uio_iov ref. to it. 929 */ 930 i = 0; 931 while (left > 0) { 932 NFSMGET(m); 933 MCLGET(m, M_WAITOK); 934 m->m_len = 0; 935 siz = min(M_TRAILINGSPACE(m), left); 936 left -= siz; 937 i++; 938 if (m3) 939 m2->m_next = m; 940 else 941 m3 = m; 942 m2 = m; 943 } 944 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 945 m = m3; 946 left = len; 947 i = 0; 948 while (left > 0) { 949 if (m == NULL) 950 panic("nfsrv_createiovec iov"); 951 siz = min(M_TRAILINGSPACE(m), left); 952 if (siz > 0) { 953 iv->iov_base = mtod(m, caddr_t) + m->m_len; 954 iv->iov_len = siz; 955 m->m_len += siz; 956 left -= siz; 957 iv++; 958 i++; 959 } 960 m = m->m_next; 961 } 962 *mpp = m3; 963 *mpendp = m2; 964 return (i); 965 } 966 967 /* 968 * Create an mbuf chain and an associated iovec that can be used to Read 969 * or Getextattr of data. 970 * Upon success, return pointers to the first and last mbufs in the chain 971 * plus the malloc'd iovec and its iovlen. 972 * Same as above, but creates ext_pgs mbuf(s). 973 */ 974 static int 975 nfsrv_createiovec_extpgs(int len, int maxextsiz, struct mbuf **mpp, 976 struct mbuf **mpendp, struct iovec **ivp) 977 { 978 struct mbuf *m, *m2 = NULL, *m3; 979 struct iovec *iv; 980 int i, left, pgno, siz; 981 982 left = len; 983 m3 = NULL; 984 /* 985 * Generate the mbuf list with the uio_iov ref. to it. 986 */ 987 i = 0; 988 while (left > 0) { 989 siz = min(left, maxextsiz); 990 m = mb_alloc_ext_plus_pages(siz, M_WAITOK); 991 left -= siz; 992 i += m->m_epg_npgs; 993 if (m3 != NULL) 994 m2->m_next = m; 995 else 996 m3 = m; 997 m2 = m; 998 } 999 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 1000 m = m3; 1001 left = len; 1002 i = 0; 1003 pgno = 0; 1004 while (left > 0) { 1005 if (m == NULL) 1006 panic("nfsvno_createiovec_extpgs iov"); 1007 siz = min(PAGE_SIZE, left); 1008 if (siz > 0) { 1009 iv->iov_base = (void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 1010 iv->iov_len = siz; 1011 m->m_len += siz; 1012 if (pgno == m->m_epg_npgs - 1) 1013 m->m_epg_last_len = siz; 1014 left -= siz; 1015 iv++; 1016 i++; 1017 pgno++; 1018 } 1019 if (pgno == m->m_epg_npgs && left > 0) { 1020 m = m->m_next; 1021 if (m == NULL) 1022 panic("nfsvno_createiovec_extpgs iov"); 1023 pgno = 0; 1024 } 1025 } 1026 *mpp = m3; 1027 *mpendp = m2; 1028 return (i); 1029 } 1030 1031 /* 1032 * Read vnode op call into mbuf list. 1033 */ 1034 int 1035 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 1036 int maxextsiz, struct thread *p, struct mbuf **mpp, 1037 struct mbuf **mpendp) 1038 { 1039 struct mbuf *m; 1040 struct iovec *iv; 1041 int error = 0, len, tlen, ioflag = 0; 1042 struct mbuf *m3; 1043 struct uio io, *uiop = &io; 1044 struct nfsheur *nh; 1045 1046 /* 1047 * Attempt to read from a DS file. A return of ENOENT implies 1048 * there is no DS file to read. 1049 */ 1050 error = nfsrv_proxyds(vp, off, cnt, cred, p, NFSPROC_READDS, mpp, 1051 NULL, mpendp, NULL, NULL, NULL, 0, NULL); 1052 if (error != ENOENT) 1053 return (error); 1054 1055 len = NFSM_RNDUP(cnt); 1056 if (maxextsiz > 0) 1057 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 1058 &m3, &m, &iv); 1059 else 1060 uiop->uio_iovcnt = nfsrv_createiovec(len, &m3, &m, &iv); 1061 uiop->uio_iov = iv; 1062 uiop->uio_offset = off; 1063 uiop->uio_resid = len; 1064 uiop->uio_rw = UIO_READ; 1065 uiop->uio_segflg = UIO_SYSSPACE; 1066 uiop->uio_td = NULL; 1067 nh = nfsrv_sequential_heuristic(uiop, vp); 1068 ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 1069 /* XXX KDM make this more systematic? */ 1070 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_READ] += uiop->uio_resid; 1071 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 1072 free(iv, M_TEMP); 1073 if (error) { 1074 m_freem(m3); 1075 *mpp = NULL; 1076 goto out; 1077 } 1078 nh->nh_nextoff = uiop->uio_offset; 1079 tlen = len - uiop->uio_resid; 1080 cnt = cnt < tlen ? cnt : tlen; 1081 tlen = NFSM_RNDUP(cnt); 1082 if (tlen == 0) { 1083 m_freem(m3); 1084 m3 = m = NULL; 1085 } else if (len != tlen || tlen != cnt) 1086 m = nfsrv_adj(m3, len - tlen, tlen - cnt); 1087 *mpp = m3; 1088 *mpendp = m; 1089 1090 out: 1091 NFSEXITCODE(error); 1092 return (error); 1093 } 1094 1095 /* 1096 * Create the iovec for the mbuf chain passed in as an argument. 1097 * The "cp" argument is where the data starts within the first mbuf in 1098 * the chain. It returns the iovec and the iovcnt. 1099 */ 1100 static int 1101 nfsrv_createiovecw(int retlen, struct mbuf *m, char *cp, struct iovec **ivpp, 1102 int *iovcntp) 1103 { 1104 struct mbuf *mp; 1105 struct iovec *ivp; 1106 int cnt, i, len; 1107 1108 /* 1109 * Loop through the mbuf chain, counting how many mbufs are a 1110 * part of this write operation, so the iovec size is known. 1111 */ 1112 cnt = 0; 1113 len = retlen; 1114 mp = m; 1115 i = mtod(mp, caddr_t) + mp->m_len - cp; 1116 while (len > 0) { 1117 if (i > 0) { 1118 len -= i; 1119 cnt++; 1120 } 1121 mp = mp->m_next; 1122 if (!mp) { 1123 if (len > 0) 1124 return (EBADRPC); 1125 } else 1126 i = mp->m_len; 1127 } 1128 1129 /* Now, create the iovec. */ 1130 mp = m; 1131 *ivpp = ivp = malloc(cnt * sizeof (struct iovec), M_TEMP, 1132 M_WAITOK); 1133 *iovcntp = cnt; 1134 i = mtod(mp, caddr_t) + mp->m_len - cp; 1135 len = retlen; 1136 while (len > 0) { 1137 if (mp == NULL) 1138 panic("nfsrv_createiovecw"); 1139 if (i > 0) { 1140 i = min(i, len); 1141 ivp->iov_base = cp; 1142 ivp->iov_len = i; 1143 ivp++; 1144 len -= i; 1145 } 1146 mp = mp->m_next; 1147 if (mp) { 1148 i = mp->m_len; 1149 cp = mtod(mp, caddr_t); 1150 } 1151 } 1152 return (0); 1153 } 1154 1155 /* 1156 * Write vnode op from an mbuf list. 1157 */ 1158 int 1159 nfsvno_write(struct vnode *vp, off_t off, int retlen, int *stable, 1160 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 1161 { 1162 struct iovec *iv; 1163 int cnt, ioflags, error; 1164 struct uio io, *uiop = &io; 1165 struct nfsheur *nh; 1166 1167 /* 1168 * Attempt to write to a DS file. A return of ENOENT implies 1169 * there is no DS file to write. 1170 */ 1171 error = nfsrv_proxyds(vp, off, retlen, cred, p, NFSPROC_WRITEDS, 1172 &mp, cp, NULL, NULL, NULL, NULL, 0, NULL); 1173 if (error != ENOENT) { 1174 *stable = NFSWRITE_FILESYNC; 1175 return (error); 1176 } 1177 1178 if (*stable == NFSWRITE_UNSTABLE) 1179 ioflags = IO_NODELOCKED; 1180 else 1181 ioflags = (IO_SYNC | IO_NODELOCKED); 1182 error = nfsrv_createiovecw(retlen, mp, cp, &iv, &cnt); 1183 if (error != 0) 1184 return (error); 1185 uiop->uio_iov = iv; 1186 uiop->uio_iovcnt = cnt; 1187 uiop->uio_resid = retlen; 1188 uiop->uio_rw = UIO_WRITE; 1189 uiop->uio_segflg = UIO_SYSSPACE; 1190 NFSUIOPROC(uiop, p); 1191 uiop->uio_offset = off; 1192 nh = nfsrv_sequential_heuristic(uiop, vp); 1193 ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 1194 /* XXX KDM make this more systematic? */ 1195 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_WRITE] += uiop->uio_resid; 1196 error = VOP_WRITE(vp, uiop, ioflags, cred); 1197 if (error == 0) 1198 nh->nh_nextoff = uiop->uio_offset; 1199 free(iv, M_TEMP); 1200 1201 NFSEXITCODE(error); 1202 return (error); 1203 } 1204 1205 /* 1206 * Common code for creating a regular file (plus special files for V2). 1207 */ 1208 int 1209 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 1210 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 1211 int32_t *cverf, NFSDEV_T rdev, struct nfsexstuff *exp) 1212 { 1213 u_quad_t tempsize; 1214 int error; 1215 struct thread *p = curthread; 1216 1217 error = nd->nd_repstat; 1218 if (!error && ndp->ni_vp == NULL) { 1219 if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 1220 error = VOP_CREATE(ndp->ni_dvp, 1221 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1222 /* For a pNFS server, create the data file on a DS. */ 1223 if (error == 0 && nvap->na_type == VREG) { 1224 /* 1225 * Create a data file on a DS for a pNFS server. 1226 * This function just returns if not 1227 * running a pNFS DS or the creation fails. 1228 */ 1229 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1230 nd->nd_cred, p); 1231 } 1232 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1233 NULL, false); 1234 nfsvno_relpathbuf(ndp); 1235 if (!error) { 1236 if (*exclusive_flagp) { 1237 *exclusive_flagp = 0; 1238 NFSVNO_ATTRINIT(nvap); 1239 nvap->na_atime.tv_sec = cverf[0]; 1240 nvap->na_atime.tv_nsec = cverf[1]; 1241 error = VOP_SETATTR(ndp->ni_vp, 1242 &nvap->na_vattr, nd->nd_cred); 1243 if (error != 0) { 1244 vput(ndp->ni_vp); 1245 ndp->ni_vp = NULL; 1246 error = NFSERR_NOTSUPP; 1247 } 1248 } 1249 } 1250 /* 1251 * NFS V2 Only. nfsrvd_mknod() does this for V3. 1252 * (This implies, just get out on an error.) 1253 */ 1254 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 1255 nvap->na_type == VFIFO) { 1256 if (nvap->na_type == VCHR && rdev == 0xffffffff) 1257 nvap->na_type = VFIFO; 1258 if (nvap->na_type != VFIFO && 1259 (error = priv_check_cred(nd->nd_cred, PRIV_VFS_MKNOD_DEV))) { 1260 nfsvno_relpathbuf(ndp); 1261 vput(ndp->ni_dvp); 1262 goto out; 1263 } 1264 nvap->na_rdev = rdev; 1265 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1266 &ndp->ni_cnd, &nvap->na_vattr); 1267 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1268 NULL, false); 1269 nfsvno_relpathbuf(ndp); 1270 if (error) 1271 goto out; 1272 } else { 1273 nfsvno_relpathbuf(ndp); 1274 vput(ndp->ni_dvp); 1275 error = ENXIO; 1276 goto out; 1277 } 1278 *vpp = ndp->ni_vp; 1279 } else { 1280 /* 1281 * Handle cases where error is already set and/or 1282 * the file exists. 1283 * 1 - clean up the lookup 1284 * 2 - iff !error and na_size set, truncate it 1285 */ 1286 nfsvno_relpathbuf(ndp); 1287 *vpp = ndp->ni_vp; 1288 if (ndp->ni_dvp == *vpp) 1289 vrele(ndp->ni_dvp); 1290 else 1291 vput(ndp->ni_dvp); 1292 if (!error && nvap->na_size != VNOVAL) { 1293 error = nfsvno_accchk(*vpp, VWRITE, 1294 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1295 NFSACCCHK_VPISLOCKED, NULL); 1296 if (!error) { 1297 tempsize = nvap->na_size; 1298 NFSVNO_ATTRINIT(nvap); 1299 nvap->na_size = tempsize; 1300 error = nfsvno_setattr(*vpp, nvap, 1301 nd->nd_cred, p, exp); 1302 } 1303 } 1304 if (error) 1305 vput(*vpp); 1306 } 1307 1308 out: 1309 NFSEXITCODE(error); 1310 return (error); 1311 } 1312 1313 /* 1314 * Do a mknod vnode op. 1315 */ 1316 int 1317 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 1318 struct thread *p) 1319 { 1320 int error = 0; 1321 __enum_uint8(vtype) vtyp; 1322 1323 vtyp = nvap->na_type; 1324 /* 1325 * Iff doesn't exist, create it. 1326 */ 1327 if (ndp->ni_vp) { 1328 nfsvno_relpathbuf(ndp); 1329 vput(ndp->ni_dvp); 1330 vrele(ndp->ni_vp); 1331 error = EEXIST; 1332 goto out; 1333 } 1334 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 1335 nfsvno_relpathbuf(ndp); 1336 vput(ndp->ni_dvp); 1337 error = NFSERR_BADTYPE; 1338 goto out; 1339 } 1340 if (vtyp == VSOCK) { 1341 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 1342 &ndp->ni_cnd, &nvap->na_vattr); 1343 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1344 false); 1345 nfsvno_relpathbuf(ndp); 1346 } else { 1347 if (nvap->na_type != VFIFO && 1348 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV))) { 1349 nfsvno_relpathbuf(ndp); 1350 vput(ndp->ni_dvp); 1351 goto out; 1352 } 1353 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1354 &ndp->ni_cnd, &nvap->na_vattr); 1355 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1356 false); 1357 nfsvno_relpathbuf(ndp); 1358 /* 1359 * Since VOP_MKNOD returns the ni_vp, I can't 1360 * see any reason to do the lookup. 1361 */ 1362 } 1363 1364 out: 1365 NFSEXITCODE(error); 1366 return (error); 1367 } 1368 1369 /* 1370 * Mkdir vnode op. 1371 */ 1372 int 1373 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 1374 struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 1375 { 1376 int error = 0; 1377 1378 if (ndp->ni_vp != NULL) { 1379 if (ndp->ni_dvp == ndp->ni_vp) 1380 vrele(ndp->ni_dvp); 1381 else 1382 vput(ndp->ni_dvp); 1383 vrele(ndp->ni_vp); 1384 nfsvno_relpathbuf(ndp); 1385 error = EEXIST; 1386 goto out; 1387 } 1388 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1389 &nvap->na_vattr); 1390 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, false); 1391 nfsvno_relpathbuf(ndp); 1392 1393 out: 1394 NFSEXITCODE(error); 1395 return (error); 1396 } 1397 1398 /* 1399 * symlink vnode op. 1400 */ 1401 int 1402 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 1403 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 1404 struct nfsexstuff *exp) 1405 { 1406 int error = 0; 1407 1408 if (ndp->ni_vp) { 1409 nfsvno_relpathbuf(ndp); 1410 if (ndp->ni_dvp == ndp->ni_vp) 1411 vrele(ndp->ni_dvp); 1412 else 1413 vput(ndp->ni_dvp); 1414 vrele(ndp->ni_vp); 1415 error = EEXIST; 1416 goto out; 1417 } 1418 1419 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1420 &nvap->na_vattr, pathcp); 1421 /* 1422 * Although FreeBSD still had the lookup code in 1423 * it for 7/current, there doesn't seem to be any 1424 * point, since VOP_SYMLINK() returns the ni_vp. 1425 * Just vput it for v2. 1426 */ 1427 VOP_VPUT_PAIR(ndp->ni_dvp, &ndp->ni_vp, !not_v2 && error == 0); 1428 nfsvno_relpathbuf(ndp); 1429 1430 out: 1431 NFSEXITCODE(error); 1432 return (error); 1433 } 1434 1435 /* 1436 * Parse symbolic link arguments. 1437 * This function has an ugly side effect. It will malloc() an area for 1438 * the symlink and set iov_base to point to it, only if it succeeds. 1439 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 1440 * be FREE'd later. 1441 */ 1442 int 1443 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 1444 struct thread *p, char **pathcpp, int *lenp) 1445 { 1446 u_int32_t *tl; 1447 char *pathcp = NULL; 1448 int error = 0, len; 1449 struct nfsv2_sattr *sp; 1450 1451 *pathcpp = NULL; 1452 *lenp = 0; 1453 if ((nd->nd_flag & ND_NFSV3) && 1454 (error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p))) 1455 goto nfsmout; 1456 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1457 len = fxdr_unsigned(int, *tl); 1458 if (len > NFS_MAXPATHLEN || len <= 0) { 1459 error = EBADRPC; 1460 goto nfsmout; 1461 } 1462 pathcp = malloc(len + 1, M_TEMP, M_WAITOK); 1463 error = nfsrv_mtostr(nd, pathcp, len); 1464 if (error) 1465 goto nfsmout; 1466 if (nd->nd_flag & ND_NFSV2) { 1467 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1468 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1469 } 1470 *pathcpp = pathcp; 1471 *lenp = len; 1472 NFSEXITCODE2(0, nd); 1473 return (0); 1474 nfsmout: 1475 if (pathcp) 1476 free(pathcp, M_TEMP); 1477 NFSEXITCODE2(error, nd); 1478 return (error); 1479 } 1480 1481 /* 1482 * Remove a non-directory object. 1483 */ 1484 int 1485 nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1486 struct thread *p, struct nfsexstuff *exp) 1487 { 1488 struct vnode *vp, *dsdvp[NFSDEV_MAXMIRRORS]; 1489 int error = 0, mirrorcnt; 1490 char fname[PNFS_FILENAME_LEN + 1]; 1491 fhandle_t fh; 1492 1493 vp = ndp->ni_vp; 1494 dsdvp[0] = NULL; 1495 if (vp->v_type == VDIR) 1496 error = NFSERR_ISDIR; 1497 else if (is_v4) 1498 error = nfsrv_checkremove(vp, 1, NULL, (nfsquad_t)((u_quad_t)0), 1499 p); 1500 if (error == 0) 1501 nfsrv_pnfsremovesetup(vp, p, dsdvp, &mirrorcnt, fname, &fh); 1502 if (!error) 1503 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1504 if (error == 0 && dsdvp[0] != NULL) 1505 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1506 if (ndp->ni_dvp == vp) 1507 vrele(ndp->ni_dvp); 1508 else 1509 vput(ndp->ni_dvp); 1510 vput(vp); 1511 nfsvno_relpathbuf(ndp); 1512 NFSEXITCODE(error); 1513 return (error); 1514 } 1515 1516 /* 1517 * Remove a directory. 1518 */ 1519 int 1520 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1521 struct thread *p, struct nfsexstuff *exp) 1522 { 1523 struct vnode *vp; 1524 int error = 0; 1525 1526 vp = ndp->ni_vp; 1527 if (vp->v_type != VDIR) { 1528 error = ENOTDIR; 1529 goto out; 1530 } 1531 /* 1532 * No rmdir "." please. 1533 */ 1534 if (ndp->ni_dvp == vp) { 1535 error = EINVAL; 1536 goto out; 1537 } 1538 /* 1539 * The root of a mounted filesystem cannot be deleted. 1540 */ 1541 if (vp->v_vflag & VV_ROOT) 1542 error = EBUSY; 1543 out: 1544 if (!error) 1545 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1546 if (ndp->ni_dvp == vp) 1547 vrele(ndp->ni_dvp); 1548 else 1549 vput(ndp->ni_dvp); 1550 vput(vp); 1551 nfsvno_relpathbuf(ndp); 1552 NFSEXITCODE(error); 1553 return (error); 1554 } 1555 1556 /* 1557 * Rename vnode op. 1558 */ 1559 int 1560 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1561 u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1562 { 1563 struct vnode *fvp, *tvp, *tdvp, *dsdvp[NFSDEV_MAXMIRRORS]; 1564 int error = 0, mirrorcnt; 1565 char fname[PNFS_FILENAME_LEN + 1]; 1566 fhandle_t fh; 1567 1568 dsdvp[0] = NULL; 1569 fvp = fromndp->ni_vp; 1570 if (ndstat) { 1571 vrele(fromndp->ni_dvp); 1572 vrele(fvp); 1573 error = ndstat; 1574 goto out1; 1575 } 1576 tdvp = tondp->ni_dvp; 1577 tvp = tondp->ni_vp; 1578 if (tvp != NULL) { 1579 if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1580 error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1581 goto out; 1582 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1583 error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1584 goto out; 1585 } 1586 if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1587 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1588 goto out; 1589 } 1590 1591 /* 1592 * A rename to '.' or '..' results in a prematurely 1593 * unlocked vnode on FreeBSD5, so I'm just going to fail that 1594 * here. 1595 */ 1596 if ((tondp->ni_cnd.cn_namelen == 1 && 1597 tondp->ni_cnd.cn_nameptr[0] == '.') || 1598 (tondp->ni_cnd.cn_namelen == 2 && 1599 tondp->ni_cnd.cn_nameptr[0] == '.' && 1600 tondp->ni_cnd.cn_nameptr[1] == '.')) { 1601 error = EINVAL; 1602 goto out; 1603 } 1604 } 1605 if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1606 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1607 goto out; 1608 } 1609 if (fvp->v_mount != tdvp->v_mount) { 1610 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1611 goto out; 1612 } 1613 if (fvp == tdvp) { 1614 error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1615 goto out; 1616 } 1617 if (fvp == tvp) { 1618 /* 1619 * If source and destination are the same, there is nothing to 1620 * do. Set error to -1 to indicate this. 1621 */ 1622 error = -1; 1623 goto out; 1624 } 1625 if (ndflag & ND_NFSV4) { 1626 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1627 error = nfsrv_checkremove(fvp, 0, NULL, 1628 (nfsquad_t)((u_quad_t)0), p); 1629 NFSVOPUNLOCK(fvp); 1630 } else 1631 error = EPERM; 1632 if (tvp && !error) 1633 error = nfsrv_checkremove(tvp, 1, NULL, 1634 (nfsquad_t)((u_quad_t)0), p); 1635 } else { 1636 /* 1637 * For NFSv2 and NFSv3, try to get rid of the delegation, so 1638 * that the NFSv4 client won't be confused by the rename. 1639 * Since nfsd_recalldelegation() can only be called on an 1640 * unlocked vnode at this point and fvp is the file that will 1641 * still exist after the rename, just do fvp. 1642 */ 1643 nfsd_recalldelegation(fvp, p); 1644 } 1645 if (error == 0 && tvp != NULL) { 1646 nfsrv_pnfsremovesetup(tvp, p, dsdvp, &mirrorcnt, fname, &fh); 1647 NFSD_DEBUG(4, "nfsvno_rename: pnfsremovesetup" 1648 " dsdvp=%p\n", dsdvp[0]); 1649 } 1650 out: 1651 if (!error) { 1652 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1653 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1654 &tondp->ni_cnd); 1655 } else { 1656 if (tdvp == tvp) 1657 vrele(tdvp); 1658 else 1659 vput(tdvp); 1660 if (tvp) 1661 vput(tvp); 1662 vrele(fromndp->ni_dvp); 1663 vrele(fvp); 1664 if (error == -1) 1665 error = 0; 1666 } 1667 1668 /* 1669 * If dsdvp[0] != NULL, it was set up by nfsrv_pnfsremovesetup() and 1670 * if the rename succeeded, the DS file for the tvp needs to be 1671 * removed. 1672 */ 1673 if (error == 0 && dsdvp[0] != NULL) { 1674 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1675 NFSD_DEBUG(4, "nfsvno_rename: pnfsremove\n"); 1676 } 1677 1678 nfsvno_relpathbuf(tondp); 1679 out1: 1680 nfsvno_relpathbuf(fromndp); 1681 NFSEXITCODE(error); 1682 return (error); 1683 } 1684 1685 /* 1686 * Link vnode op. 1687 */ 1688 int 1689 nfsvno_link(struct nameidata *ndp, struct vnode *vp, nfsquad_t clientid, 1690 struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 1691 { 1692 struct vnode *xp; 1693 int error = 0; 1694 1695 xp = ndp->ni_vp; 1696 if (xp != NULL) { 1697 error = EEXIST; 1698 } else { 1699 xp = ndp->ni_dvp; 1700 if (vp->v_mount != xp->v_mount) 1701 error = EXDEV; 1702 } 1703 if (!error) { 1704 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1705 if (!VN_IS_DOOMED(vp)) { 1706 error = nfsrv_checkremove(vp, 0, NULL, clientid, p); 1707 if (error == 0) 1708 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1709 } else 1710 error = EPERM; 1711 if (ndp->ni_dvp == vp) { 1712 vrele(ndp->ni_dvp); 1713 NFSVOPUNLOCK(vp); 1714 } else { 1715 vref(vp); 1716 VOP_VPUT_PAIR(ndp->ni_dvp, &vp, true); 1717 } 1718 } else { 1719 if (ndp->ni_dvp == ndp->ni_vp) 1720 vrele(ndp->ni_dvp); 1721 else 1722 vput(ndp->ni_dvp); 1723 if (ndp->ni_vp) 1724 vrele(ndp->ni_vp); 1725 } 1726 nfsvno_relpathbuf(ndp); 1727 NFSEXITCODE(error); 1728 return (error); 1729 } 1730 1731 /* 1732 * Do the fsync() appropriate for the commit. 1733 */ 1734 int 1735 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1736 struct thread *td) 1737 { 1738 int error = 0; 1739 1740 /* 1741 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1742 * file is done. At this time VOP_FSYNC does not accept offset and 1743 * byte count parameters so call VOP_FSYNC the whole file for now. 1744 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1745 * File systems that do not use the buffer cache (as indicated 1746 * by MNTK_USES_BCACHE not being set) must use VOP_FSYNC(). 1747 */ 1748 if (cnt == 0 || cnt > MAX_COMMIT_COUNT || 1749 (vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) { 1750 /* 1751 * Give up and do the whole thing 1752 */ 1753 vnode_pager_clean_sync(vp); 1754 error = VOP_FSYNC(vp, MNT_WAIT, td); 1755 } else { 1756 /* 1757 * Locate and synchronously write any buffers that fall 1758 * into the requested range. Note: we are assuming that 1759 * f_iosize is a power of 2. 1760 */ 1761 int iosize = vp->v_mount->mnt_stat.f_iosize; 1762 int iomask = iosize - 1; 1763 struct bufobj *bo; 1764 daddr_t lblkno; 1765 1766 /* 1767 * Align to iosize boundary, super-align to page boundary. 1768 */ 1769 if (off & iomask) { 1770 cnt += off & iomask; 1771 off &= ~(u_quad_t)iomask; 1772 } 1773 if (off & PAGE_MASK) { 1774 cnt += off & PAGE_MASK; 1775 off &= ~(u_quad_t)PAGE_MASK; 1776 } 1777 lblkno = off / iosize; 1778 1779 if (vp->v_object && vm_object_mightbedirty(vp->v_object)) { 1780 VM_OBJECT_WLOCK(vp->v_object); 1781 vm_object_page_clean(vp->v_object, off, off + cnt, 1782 OBJPC_SYNC); 1783 VM_OBJECT_WUNLOCK(vp->v_object); 1784 } 1785 1786 bo = &vp->v_bufobj; 1787 BO_LOCK(bo); 1788 while (cnt > 0) { 1789 struct buf *bp; 1790 1791 /* 1792 * If we have a buffer and it is marked B_DELWRI we 1793 * have to lock and write it. Otherwise the prior 1794 * write is assumed to have already been committed. 1795 * 1796 * gbincore() can return invalid buffers now so we 1797 * have to check that bit as well (though B_DELWRI 1798 * should not be set if B_INVAL is set there could be 1799 * a race here since we haven't locked the buffer). 1800 */ 1801 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1802 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1803 LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { 1804 BO_LOCK(bo); 1805 continue; /* retry */ 1806 } 1807 if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1808 B_DELWRI) { 1809 bremfree(bp); 1810 bp->b_flags &= ~B_ASYNC; 1811 bwrite(bp); 1812 ++nfs_commit_miss; 1813 } else 1814 BUF_UNLOCK(bp); 1815 BO_LOCK(bo); 1816 } 1817 ++nfs_commit_blks; 1818 if (cnt < iosize) 1819 break; 1820 cnt -= iosize; 1821 ++lblkno; 1822 } 1823 BO_UNLOCK(bo); 1824 } 1825 NFSEXITCODE(error); 1826 return (error); 1827 } 1828 1829 /* 1830 * Statfs vnode op. 1831 */ 1832 int 1833 nfsvno_statfs(struct vnode *vp, struct statfs *sf) 1834 { 1835 struct statfs *tsf; 1836 int error; 1837 1838 tsf = NULL; 1839 if (nfsrv_devidcnt > 0) { 1840 /* For a pNFS service, get the DS numbers. */ 1841 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK | M_ZERO); 1842 error = nfsrv_pnfsstatfs(tsf, vp->v_mount); 1843 if (error != 0) { 1844 free(tsf, M_TEMP); 1845 tsf = NULL; 1846 } 1847 } 1848 error = VFS_STATFS(vp->v_mount, sf); 1849 if (error == 0) { 1850 if (tsf != NULL) { 1851 sf->f_blocks = tsf->f_blocks; 1852 sf->f_bavail = tsf->f_bavail; 1853 sf->f_bfree = tsf->f_bfree; 1854 sf->f_bsize = tsf->f_bsize; 1855 } 1856 /* 1857 * Since NFS handles these values as unsigned on the 1858 * wire, there is no way to represent negative values, 1859 * so set them to 0. Without this, they will appear 1860 * to be very large positive values for clients like 1861 * Solaris10. 1862 */ 1863 if (sf->f_bavail < 0) 1864 sf->f_bavail = 0; 1865 if (sf->f_ffree < 0) 1866 sf->f_ffree = 0; 1867 } 1868 free(tsf, M_TEMP); 1869 NFSEXITCODE(error); 1870 return (error); 1871 } 1872 1873 /* 1874 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1875 * must handle nfsrv_opencheck() calls after any other access checks. 1876 */ 1877 void 1878 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1879 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1880 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1881 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, bool done_namei, 1882 struct nfsexstuff *exp, struct vnode **vpp) 1883 { 1884 struct vnode *vp = NULL; 1885 u_quad_t tempsize; 1886 struct nfsexstuff nes; 1887 struct thread *p = curthread; 1888 uint32_t oldrepstat; 1889 1890 if (ndp->ni_vp == NULL) { 1891 /* 1892 * If nfsrv_opencheck() sets nd_repstat, done_namei needs to be 1893 * set true, since cleanup after nfsvno_namei() is needed. 1894 */ 1895 oldrepstat = nd->nd_repstat; 1896 nd->nd_repstat = nfsrv_opencheck(clientid, 1897 stateidp, stp, NULL, nd, p, nd->nd_repstat); 1898 if (nd->nd_repstat != 0 && oldrepstat == 0) 1899 done_namei = true; 1900 } 1901 if (!nd->nd_repstat) { 1902 if (ndp->ni_vp == NULL) { 1903 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1904 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1905 /* For a pNFS server, create the data file on a DS. */ 1906 if (nd->nd_repstat == 0) { 1907 /* 1908 * Create a data file on a DS for a pNFS server. 1909 * This function just returns if not 1910 * running a pNFS DS or the creation fails. 1911 */ 1912 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1913 cred, p); 1914 } 1915 VOP_VPUT_PAIR(ndp->ni_dvp, nd->nd_repstat == 0 ? 1916 &ndp->ni_vp : NULL, false); 1917 nfsvno_relpathbuf(ndp); 1918 if (!nd->nd_repstat) { 1919 if (*exclusive_flagp) { 1920 *exclusive_flagp = 0; 1921 NFSVNO_ATTRINIT(nvap); 1922 nvap->na_atime.tv_sec = cverf[0]; 1923 nvap->na_atime.tv_nsec = cverf[1]; 1924 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1925 &nvap->na_vattr, cred); 1926 if (nd->nd_repstat != 0) { 1927 vput(ndp->ni_vp); 1928 ndp->ni_vp = NULL; 1929 nd->nd_repstat = NFSERR_NOTSUPP; 1930 } else 1931 NFSSETBIT_ATTRBIT(attrbitp, 1932 NFSATTRBIT_TIMEACCESS); 1933 } else { 1934 nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1935 aclp, p, attrbitp, exp); 1936 } 1937 } 1938 vp = ndp->ni_vp; 1939 } else { 1940 nfsvno_relpathbuf(ndp); 1941 vp = ndp->ni_vp; 1942 if (create == NFSV4OPEN_CREATE) { 1943 if (ndp->ni_dvp == vp) 1944 vrele(ndp->ni_dvp); 1945 else 1946 vput(ndp->ni_dvp); 1947 } 1948 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1949 if (ndp->ni_cnd.cn_flags & RDONLY) 1950 NFSVNO_SETEXRDONLY(&nes); 1951 else 1952 NFSVNO_EXINIT(&nes); 1953 nd->nd_repstat = nfsvno_accchk(vp, 1954 VWRITE, cred, &nes, p, 1955 NFSACCCHK_NOOVERRIDE, 1956 NFSACCCHK_VPISLOCKED, NULL); 1957 nd->nd_repstat = nfsrv_opencheck(clientid, 1958 stateidp, stp, vp, nd, p, nd->nd_repstat); 1959 if (!nd->nd_repstat) { 1960 tempsize = nvap->na_size; 1961 NFSVNO_ATTRINIT(nvap); 1962 nvap->na_size = tempsize; 1963 nd->nd_repstat = nfsvno_setattr(vp, 1964 nvap, cred, p, exp); 1965 } 1966 } else if (vp->v_type == VREG) { 1967 nd->nd_repstat = nfsrv_opencheck(clientid, 1968 stateidp, stp, vp, nd, p, nd->nd_repstat); 1969 } 1970 } 1971 } else if (done_namei) { 1972 KASSERT(create == NFSV4OPEN_CREATE, 1973 ("nfsvno_open: not create")); 1974 /* 1975 * done_namei is set when nfsvno_namei() has completed 1976 * successfully, but a subsequent error was set in 1977 * nd_repstat. As such, cleanup of the nfsvno_namei() 1978 * results is required. 1979 */ 1980 nfsvno_relpathbuf(ndp); 1981 if (ndp->ni_dvp == ndp->ni_vp) 1982 vrele(ndp->ni_dvp); 1983 else 1984 vput(ndp->ni_dvp); 1985 if (ndp->ni_vp) 1986 vput(ndp->ni_vp); 1987 } 1988 *vpp = vp; 1989 1990 NFSEXITCODE2(0, nd); 1991 } 1992 1993 /* 1994 * Updates the file rev and sets the mtime and ctime 1995 * to the current clock time, returning the va_filerev and va_Xtime 1996 * values. 1997 * Return ESTALE to indicate the vnode is VIRF_DOOMED. 1998 */ 1999 int 2000 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 2001 struct nfsrv_descript *nd, struct thread *p) 2002 { 2003 struct vattr va; 2004 2005 VATTR_NULL(&va); 2006 vfs_timestamp(&va.va_mtime); 2007 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 2008 NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); 2009 if (VN_IS_DOOMED(vp)) 2010 return (ESTALE); 2011 } 2012 (void) VOP_SETATTR(vp, &va, nd->nd_cred); 2013 (void) nfsvno_getattr(vp, nvap, nd, p, 1, NULL); 2014 return (0); 2015 } 2016 2017 /* 2018 * Glue routine to nfsv4_fillattr(). 2019 */ 2020 int 2021 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 2022 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 2023 struct ucred *cred, struct thread *p, int isdgram, int reterr, 2024 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 2025 { 2026 struct statfs *sf; 2027 int error; 2028 2029 sf = NULL; 2030 if (nfsrv_devidcnt > 0 && 2031 (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEAVAIL) || 2032 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEFREE) || 2033 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACETOTAL))) { 2034 sf = malloc(sizeof(*sf), M_TEMP, M_WAITOK | M_ZERO); 2035 error = nfsrv_pnfsstatfs(sf, mp); 2036 if (error != 0) { 2037 free(sf, M_TEMP); 2038 sf = NULL; 2039 } 2040 } 2041 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 2042 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 2043 mounted_on_fileno, sf); 2044 free(sf, M_TEMP); 2045 NFSEXITCODE2(0, nd); 2046 return (error); 2047 } 2048 2049 /* Since the Readdir vnode ops vary, put the entire functions in here. */ 2050 /* 2051 * nfs readdir service 2052 * - mallocs what it thinks is enough to read 2053 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 2054 * - calls VOP_READDIR() 2055 * - loops around building the reply 2056 * if the output generated exceeds count break out of loop 2057 * The NFSM_CLGET macro is used here so that the reply will be packed 2058 * tightly in mbuf clusters. 2059 * - it trims out records with d_fileno == 0 2060 * this doesn't matter for Unix clients, but they might confuse clients 2061 * for other os'. 2062 * - it trims out records with d_type == DT_WHT 2063 * these cannot be seen through NFS (unless we extend the protocol) 2064 * The alternate call nfsrvd_readdirplus() does lookups as well. 2065 * PS: The NFS protocol spec. does not clarify what the "count" byte 2066 * argument is a count of.. just name strings and file id's or the 2067 * entire reply rpc or ... 2068 * I tried just file name and id sizes and it confused the Sun client, 2069 * so I am using the full rpc size now. The "paranoia.." comment refers 2070 * to including the status longwords that are not a part of the dir. 2071 * "entry" structures, but are in the rpc. 2072 */ 2073 int 2074 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 2075 struct vnode *vp, struct nfsexstuff *exp) 2076 { 2077 struct dirent *dp; 2078 u_int32_t *tl; 2079 int dirlen; 2080 char *cpos, *cend, *rbuf; 2081 struct nfsvattr at; 2082 int nlen, error = 0, getret = 1; 2083 int siz, cnt, fullsiz, eofflag, ncookies; 2084 u_int64_t off, toff, verf __unused; 2085 uint64_t *cookies = NULL, *cookiep; 2086 struct uio io; 2087 struct iovec iv; 2088 int is_ufs; 2089 struct thread *p = curthread; 2090 2091 if (nd->nd_repstat) { 2092 nfsrv_postopattr(nd, getret, &at); 2093 goto out; 2094 } 2095 if (nd->nd_flag & ND_NFSV2) { 2096 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2097 off = fxdr_unsigned(u_quad_t, *tl++); 2098 } else { 2099 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2100 off = fxdr_hyper(tl); 2101 tl += 2; 2102 verf = fxdr_hyper(tl); 2103 tl += 2; 2104 } 2105 toff = off; 2106 cnt = fxdr_unsigned(int, *tl); 2107 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2108 cnt = NFS_SRVMAXDATA(nd); 2109 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2110 fullsiz = siz; 2111 if (nd->nd_flag & ND_NFSV3) { 2112 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, 2113 NULL); 2114 #if 0 2115 /* 2116 * va_filerev is not sufficient as a cookie verifier, 2117 * since it is not supposed to change when entries are 2118 * removed/added unless that offset cookies returned to 2119 * the client are no longer valid. 2120 */ 2121 if (!nd->nd_repstat && toff && verf != at.na_filerev) 2122 nd->nd_repstat = NFSERR_BAD_COOKIE; 2123 #endif 2124 } 2125 if (!nd->nd_repstat && vp->v_type != VDIR) 2126 nd->nd_repstat = NFSERR_NOTDIR; 2127 if (nd->nd_repstat == 0 && cnt == 0) { 2128 if (nd->nd_flag & ND_NFSV2) 2129 /* NFSv2 does not have NFSERR_TOOSMALL */ 2130 nd->nd_repstat = EPERM; 2131 else 2132 nd->nd_repstat = NFSERR_TOOSMALL; 2133 } 2134 if (!nd->nd_repstat) 2135 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2136 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2137 NFSACCCHK_VPISLOCKED, NULL); 2138 if (nd->nd_repstat) { 2139 vput(vp); 2140 if (nd->nd_flag & ND_NFSV3) 2141 nfsrv_postopattr(nd, getret, &at); 2142 goto out; 2143 } 2144 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2145 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2146 again: 2147 eofflag = 0; 2148 if (cookies) { 2149 free(cookies, M_TEMP); 2150 cookies = NULL; 2151 } 2152 2153 iv.iov_base = rbuf; 2154 iv.iov_len = siz; 2155 io.uio_iov = &iv; 2156 io.uio_iovcnt = 1; 2157 io.uio_offset = (off_t)off; 2158 io.uio_resid = siz; 2159 io.uio_segflg = UIO_SYSSPACE; 2160 io.uio_rw = UIO_READ; 2161 io.uio_td = NULL; 2162 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2163 &cookies); 2164 off = (u_int64_t)io.uio_offset; 2165 if (io.uio_resid) 2166 siz -= io.uio_resid; 2167 2168 if (!cookies && !nd->nd_repstat) 2169 nd->nd_repstat = NFSERR_PERM; 2170 if (nd->nd_flag & ND_NFSV3) { 2171 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2172 if (!nd->nd_repstat) 2173 nd->nd_repstat = getret; 2174 } 2175 2176 /* 2177 * Handles the failed cases. nd->nd_repstat == 0 past here. 2178 */ 2179 if (nd->nd_repstat) { 2180 vput(vp); 2181 free(rbuf, M_TEMP); 2182 if (cookies) 2183 free(cookies, M_TEMP); 2184 if (nd->nd_flag & ND_NFSV3) 2185 nfsrv_postopattr(nd, getret, &at); 2186 goto out; 2187 } 2188 /* 2189 * If nothing read, return eof 2190 * rpc reply 2191 */ 2192 if (siz == 0) { 2193 vput(vp); 2194 if (nd->nd_flag & ND_NFSV2) { 2195 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2196 } else { 2197 nfsrv_postopattr(nd, getret, &at); 2198 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2199 txdr_hyper(at.na_filerev, tl); 2200 tl += 2; 2201 } 2202 *tl++ = newnfs_false; 2203 *tl = newnfs_true; 2204 free(rbuf, M_TEMP); 2205 free(cookies, M_TEMP); 2206 goto out; 2207 } 2208 2209 /* 2210 * Check for degenerate cases of nothing useful read. 2211 * If so go try again 2212 */ 2213 cpos = rbuf; 2214 cend = rbuf + siz; 2215 dp = (struct dirent *)cpos; 2216 cookiep = cookies; 2217 2218 /* 2219 * For some reason FreeBSD's ufs_readdir() chooses to back the 2220 * directory offset up to a block boundary, so it is necessary to 2221 * skip over the records that precede the requested offset. This 2222 * requires the assumption that file offset cookies monotonically 2223 * increase. 2224 */ 2225 while (cpos < cend && ncookies > 0 && 2226 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2227 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) { 2228 cpos += dp->d_reclen; 2229 dp = (struct dirent *)cpos; 2230 cookiep++; 2231 ncookies--; 2232 } 2233 if (cpos >= cend || ncookies == 0) { 2234 siz = fullsiz; 2235 toff = off; 2236 goto again; 2237 } 2238 vput(vp); 2239 2240 /* 2241 * If cnt > MCLBYTES and the reply will not be saved, use 2242 * ext_pgs mbufs for TLS. 2243 * For NFSv4.0, we do not know for sure if the reply will 2244 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2245 */ 2246 if (cnt > MCLBYTES && siz > MCLBYTES && 2247 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2248 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2249 nd->nd_flag |= ND_EXTPG; 2250 2251 /* 2252 * dirlen is the size of the reply, including all XDR and must 2253 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 2254 * if the XDR should be included in "count", but to be safe, we do. 2255 * (Include the two booleans at the end of the reply in dirlen now.) 2256 */ 2257 if (nd->nd_flag & ND_NFSV3) { 2258 nfsrv_postopattr(nd, getret, &at); 2259 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2260 txdr_hyper(at.na_filerev, tl); 2261 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2262 } else { 2263 dirlen = 2 * NFSX_UNSIGNED; 2264 } 2265 2266 /* Loop through the records and build reply */ 2267 while (cpos < cend && ncookies > 0) { 2268 nlen = dp->d_namlen; 2269 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2270 nlen <= NFS_MAXNAMLEN) { 2271 if (nd->nd_flag & ND_NFSV3) 2272 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2273 else 2274 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2275 if (dirlen > cnt) { 2276 eofflag = 0; 2277 break; 2278 } 2279 2280 /* 2281 * Build the directory record xdr from 2282 * the dirent entry. 2283 */ 2284 if (nd->nd_flag & ND_NFSV3) { 2285 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2286 *tl++ = newnfs_true; 2287 txdr_hyper(dp->d_fileno, tl); 2288 } else { 2289 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2290 *tl++ = newnfs_true; 2291 *tl = txdr_unsigned(dp->d_fileno); 2292 } 2293 (void) nfsm_strtom(nd, dp->d_name, nlen); 2294 if (nd->nd_flag & ND_NFSV3) { 2295 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2296 txdr_hyper(*cookiep, tl); 2297 } else { 2298 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2299 *tl = txdr_unsigned(*cookiep); 2300 } 2301 } 2302 cpos += dp->d_reclen; 2303 dp = (struct dirent *)cpos; 2304 cookiep++; 2305 ncookies--; 2306 } 2307 if (cpos < cend) 2308 eofflag = 0; 2309 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2310 *tl++ = newnfs_false; 2311 if (eofflag) 2312 *tl = newnfs_true; 2313 else 2314 *tl = newnfs_false; 2315 free(rbuf, M_TEMP); 2316 free(cookies, M_TEMP); 2317 2318 out: 2319 NFSEXITCODE2(0, nd); 2320 return (0); 2321 nfsmout: 2322 vput(vp); 2323 NFSEXITCODE2(error, nd); 2324 return (error); 2325 } 2326 2327 /* 2328 * Readdirplus for V3 and Readdir for V4. 2329 */ 2330 int 2331 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 2332 struct vnode *vp, struct nfsexstuff *exp) 2333 { 2334 struct dirent *dp; 2335 u_int32_t *tl; 2336 int dirlen; 2337 char *cpos, *cend, *rbuf; 2338 struct vnode *nvp; 2339 fhandle_t nfh; 2340 struct nfsvattr nva, at, *nvap = &nva; 2341 struct mbuf *mb0, *mb1; 2342 struct nfsreferral *refp; 2343 int nlen, r, error = 0, getret = 1, usevget = 1; 2344 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 2345 caddr_t bpos0, bpos1; 2346 u_int64_t off, toff, verf __unused; 2347 uint64_t *cookies = NULL, *cookiep; 2348 nfsattrbit_t attrbits, rderrbits, savbits, refbits; 2349 struct uio io; 2350 struct iovec iv; 2351 struct componentname cn; 2352 int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls; 2353 struct mount *mp, *new_mp; 2354 uint64_t mounted_on_fileno; 2355 struct thread *p = curthread; 2356 int bextpg0, bextpg1, bextpgsiz0, bextpgsiz1; 2357 2358 if (nd->nd_repstat) { 2359 nfsrv_postopattr(nd, getret, &at); 2360 goto out; 2361 } 2362 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 2363 off = fxdr_hyper(tl); 2364 toff = off; 2365 tl += 2; 2366 verf = fxdr_hyper(tl); 2367 tl += 2; 2368 siz = fxdr_unsigned(int, *tl++); 2369 cnt = fxdr_unsigned(int, *tl); 2370 2371 /* 2372 * Use the server's maximum data transfer size as the upper bound 2373 * on reply datalen. 2374 */ 2375 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2376 cnt = NFS_SRVMAXDATA(nd); 2377 2378 /* 2379 * siz is a "hint" of how much directory information (name, fileid, 2380 * cookie) should be in the reply. At least one client "hints" 0, 2381 * so I set it to cnt for that case. I also round it up to the 2382 * next multiple of DIRBLKSIZ. 2383 * Since the size of a Readdirplus directory entry reply will always 2384 * be greater than a directory entry returned by VOP_READDIR(), it 2385 * does not make sense to read more than NFS_SRVMAXDATA() via 2386 * VOP_READDIR(). 2387 */ 2388 if (siz <= 0) 2389 siz = cnt; 2390 else if (siz > NFS_SRVMAXDATA(nd)) 2391 siz = NFS_SRVMAXDATA(nd); 2392 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2393 2394 if (nd->nd_flag & ND_NFSV4) { 2395 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2396 if (error) 2397 goto nfsmout; 2398 NFSSET_ATTRBIT(&savbits, &attrbits); 2399 NFSSET_ATTRBIT(&refbits, &attrbits); 2400 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits, nd); 2401 NFSZERO_ATTRBIT(&rderrbits); 2402 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 2403 /* 2404 * If these 4 bits are the only attributes requested by the 2405 * client, they can be satisfied without acquiring the vnode 2406 * for the file object unless it is a directory. 2407 * This will be indicated by savbits being all 0s. 2408 */ 2409 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_TYPE); 2410 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_FILEID); 2411 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_MOUNTEDONFILEID); 2412 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_RDATTRERROR); 2413 } else { 2414 NFSZERO_ATTRBIT(&attrbits); 2415 } 2416 fullsiz = siz; 2417 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2418 #if 0 2419 if (!nd->nd_repstat) { 2420 if (off && verf != at.na_filerev) { 2421 /* 2422 * va_filerev is not sufficient as a cookie verifier, 2423 * since it is not supposed to change when entries are 2424 * removed/added unless that offset cookies returned to 2425 * the client are no longer valid. 2426 */ 2427 if (nd->nd_flag & ND_NFSV4) { 2428 nd->nd_repstat = NFSERR_NOTSAME; 2429 } else { 2430 nd->nd_repstat = NFSERR_BAD_COOKIE; 2431 } 2432 } 2433 } 2434 #endif 2435 if (!nd->nd_repstat && vp->v_type != VDIR) 2436 nd->nd_repstat = NFSERR_NOTDIR; 2437 if (!nd->nd_repstat && cnt == 0) 2438 nd->nd_repstat = NFSERR_TOOSMALL; 2439 if (!nd->nd_repstat) 2440 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2441 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2442 NFSACCCHK_VPISLOCKED, NULL); 2443 if (nd->nd_repstat) { 2444 vput(vp); 2445 if (nd->nd_flag & ND_NFSV3) 2446 nfsrv_postopattr(nd, getret, &at); 2447 goto out; 2448 } 2449 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2450 is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0; 2451 2452 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2453 again: 2454 eofflag = 0; 2455 if (cookies) { 2456 free(cookies, M_TEMP); 2457 cookies = NULL; 2458 } 2459 2460 iv.iov_base = rbuf; 2461 iv.iov_len = siz; 2462 io.uio_iov = &iv; 2463 io.uio_iovcnt = 1; 2464 io.uio_offset = (off_t)off; 2465 io.uio_resid = siz; 2466 io.uio_segflg = UIO_SYSSPACE; 2467 io.uio_rw = UIO_READ; 2468 io.uio_td = NULL; 2469 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2470 &cookies); 2471 off = (u_int64_t)io.uio_offset; 2472 if (io.uio_resid) 2473 siz -= io.uio_resid; 2474 2475 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2476 2477 if (!cookies && !nd->nd_repstat) 2478 nd->nd_repstat = NFSERR_PERM; 2479 if (!nd->nd_repstat) 2480 nd->nd_repstat = getret; 2481 if (nd->nd_repstat) { 2482 vput(vp); 2483 if (cookies) 2484 free(cookies, M_TEMP); 2485 free(rbuf, M_TEMP); 2486 if (nd->nd_flag & ND_NFSV3) 2487 nfsrv_postopattr(nd, getret, &at); 2488 goto out; 2489 } 2490 /* 2491 * If nothing read, return eof 2492 * rpc reply 2493 */ 2494 if (siz == 0) { 2495 vput(vp); 2496 if (nd->nd_flag & ND_NFSV3) 2497 nfsrv_postopattr(nd, getret, &at); 2498 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2499 txdr_hyper(at.na_filerev, tl); 2500 tl += 2; 2501 *tl++ = newnfs_false; 2502 *tl = newnfs_true; 2503 free(cookies, M_TEMP); 2504 free(rbuf, M_TEMP); 2505 goto out; 2506 } 2507 2508 /* 2509 * Check for degenerate cases of nothing useful read. 2510 * If so go try again 2511 */ 2512 cpos = rbuf; 2513 cend = rbuf + siz; 2514 dp = (struct dirent *)cpos; 2515 cookiep = cookies; 2516 2517 /* 2518 * For some reason FreeBSD's ufs_readdir() chooses to back the 2519 * directory offset up to a block boundary, so it is necessary to 2520 * skip over the records that precede the requested offset. This 2521 * requires the assumption that file offset cookies monotonically 2522 * increase. 2523 */ 2524 while (cpos < cend && ncookies > 0 && 2525 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2526 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) || 2527 ((nd->nd_flag & ND_NFSV4) && 2528 ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 2529 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 2530 cpos += dp->d_reclen; 2531 dp = (struct dirent *)cpos; 2532 cookiep++; 2533 ncookies--; 2534 } 2535 if (cpos >= cend || ncookies == 0) { 2536 siz = fullsiz; 2537 toff = off; 2538 goto again; 2539 } 2540 2541 /* 2542 * Busy the file system so that the mount point won't go away 2543 * and, as such, VFS_VGET() can be used safely. 2544 */ 2545 mp = vp->v_mount; 2546 vfs_ref(mp); 2547 NFSVOPUNLOCK(vp); 2548 nd->nd_repstat = vfs_busy(mp, 0); 2549 vfs_rel(mp); 2550 if (nd->nd_repstat != 0) { 2551 vrele(vp); 2552 free(cookies, M_TEMP); 2553 free(rbuf, M_TEMP); 2554 if (nd->nd_flag & ND_NFSV3) 2555 nfsrv_postopattr(nd, getret, &at); 2556 goto out; 2557 } 2558 2559 /* 2560 * Check to see if entries in this directory can be safely acquired 2561 * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. 2562 * ZFS snapshot directories need VOP_LOOKUP(), so that any 2563 * automount of the snapshot directory that is required will 2564 * be done. 2565 * This needs to be done here for NFSv4, since NFSv4 never does 2566 * a VFS_VGET() for "." or "..". 2567 */ 2568 if (is_zfs == 1) { 2569 r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); 2570 if (r == EOPNOTSUPP) { 2571 usevget = 0; 2572 cn.cn_nameiop = LOOKUP; 2573 cn.cn_lkflags = LK_SHARED | LK_RETRY; 2574 cn.cn_cred = nd->nd_cred; 2575 } else if (r == 0) 2576 vput(nvp); 2577 } 2578 2579 /* 2580 * If the reply is likely to exceed MCLBYTES and the reply will 2581 * not be saved, use ext_pgs mbufs for TLS. 2582 * It is difficult to predict how large each entry will be and 2583 * how many entries have been read, so just assume the directory 2584 * entries grow by a factor of 4 when attributes are included. 2585 * For NFSv4.0, we do not know for sure if the reply will 2586 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2587 */ 2588 if (cnt > MCLBYTES && siz > MCLBYTES / 4 && 2589 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2590 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2591 nd->nd_flag |= ND_EXTPG; 2592 2593 /* 2594 * Save this position, in case there is an error before one entry 2595 * is created. 2596 */ 2597 mb0 = nd->nd_mb; 2598 bpos0 = nd->nd_bpos; 2599 bextpg0 = nd->nd_bextpg; 2600 bextpgsiz0 = nd->nd_bextpgsiz; 2601 2602 /* 2603 * Fill in the first part of the reply. 2604 * dirlen is the reply length in bytes and cannot exceed cnt. 2605 * (Include the two booleans at the end of the reply in dirlen now, 2606 * so we recognize when we have exceeded cnt.) 2607 */ 2608 if (nd->nd_flag & ND_NFSV3) { 2609 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2610 nfsrv_postopattr(nd, getret, &at); 2611 } else { 2612 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2613 } 2614 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2615 txdr_hyper(at.na_filerev, tl); 2616 2617 /* 2618 * Save this position, in case there is an empty reply needed. 2619 */ 2620 mb1 = nd->nd_mb; 2621 bpos1 = nd->nd_bpos; 2622 bextpg1 = nd->nd_bextpg; 2623 bextpgsiz1 = nd->nd_bextpgsiz; 2624 2625 /* Loop through the records and build reply */ 2626 entrycnt = 0; 2627 while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2628 nlen = dp->d_namlen; 2629 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2630 nlen <= NFS_MAXNAMLEN && 2631 ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2632 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2633 || (nlen == 1 && dp->d_name[0] != '.'))) { 2634 /* 2635 * Save the current position in the reply, in case 2636 * this entry exceeds cnt. 2637 */ 2638 mb1 = nd->nd_mb; 2639 bpos1 = nd->nd_bpos; 2640 bextpg1 = nd->nd_bextpg; 2641 bextpgsiz1 = nd->nd_bextpgsiz; 2642 2643 /* 2644 * For readdir_and_lookup get the vnode using 2645 * the file number. 2646 */ 2647 nvp = NULL; 2648 refp = NULL; 2649 r = 0; 2650 at_root = 0; 2651 needs_unbusy = 0; 2652 new_mp = mp; 2653 mounted_on_fileno = (uint64_t)dp->d_fileno; 2654 if ((nd->nd_flag & ND_NFSV3) || 2655 NFSNONZERO_ATTRBIT(&savbits) || 2656 dp->d_type == DT_UNKNOWN || 2657 (dp->d_type == DT_DIR && 2658 nfsrv_enable_crossmntpt != 0)) { 2659 if (nd->nd_flag & ND_NFSV4) 2660 refp = nfsv4root_getreferral(NULL, 2661 vp, dp->d_fileno); 2662 if (refp == NULL) { 2663 if (usevget) 2664 r = VFS_VGET(mp, dp->d_fileno, 2665 LK_SHARED, &nvp); 2666 else 2667 r = EOPNOTSUPP; 2668 if (r == EOPNOTSUPP) { 2669 if (usevget) { 2670 usevget = 0; 2671 cn.cn_nameiop = LOOKUP; 2672 cn.cn_lkflags = 2673 LK_SHARED | 2674 LK_RETRY; 2675 cn.cn_cred = 2676 nd->nd_cred; 2677 } 2678 cn.cn_nameptr = dp->d_name; 2679 cn.cn_namelen = nlen; 2680 cn.cn_flags = ISLASTCN | 2681 NOFOLLOW | LOCKLEAF; 2682 if (nlen == 2 && 2683 dp->d_name[0] == '.' && 2684 dp->d_name[1] == '.') 2685 cn.cn_flags |= 2686 ISDOTDOT; 2687 if (NFSVOPLOCK(vp, LK_SHARED) 2688 != 0) { 2689 nd->nd_repstat = EPERM; 2690 break; 2691 } 2692 if ((vp->v_vflag & VV_ROOT) != 0 2693 && (cn.cn_flags & ISDOTDOT) 2694 != 0) { 2695 vref(vp); 2696 nvp = vp; 2697 r = 0; 2698 } else { 2699 r = VOP_LOOKUP(vp, &nvp, 2700 &cn); 2701 if (vp != nvp) 2702 NFSVOPUNLOCK(vp); 2703 } 2704 } 2705 2706 /* 2707 * For NFSv4, check to see if nvp is 2708 * a mount point and get the mount 2709 * point vnode, as required. 2710 */ 2711 if (r == 0 && 2712 nfsrv_enable_crossmntpt != 0 && 2713 (nd->nd_flag & ND_NFSV4) != 0 && 2714 nvp->v_type == VDIR && 2715 nvp->v_mountedhere != NULL) { 2716 new_mp = nvp->v_mountedhere; 2717 r = vfs_busy(new_mp, 0); 2718 vput(nvp); 2719 nvp = NULL; 2720 if (r == 0) { 2721 r = VFS_ROOT(new_mp, 2722 LK_SHARED, &nvp); 2723 needs_unbusy = 1; 2724 if (r == 0) 2725 at_root = 1; 2726 } 2727 } 2728 } 2729 2730 /* 2731 * If we failed to look up the entry, then it 2732 * has become invalid, most likely removed. 2733 */ 2734 if (r != 0) { 2735 if (needs_unbusy) 2736 vfs_unbusy(new_mp); 2737 goto invalid; 2738 } 2739 KASSERT(refp != NULL || nvp != NULL, 2740 ("%s: undetected lookup error", __func__)); 2741 2742 if (refp == NULL && 2743 ((nd->nd_flag & ND_NFSV3) || 2744 NFSNONZERO_ATTRBIT(&attrbits))) { 2745 r = nfsvno_getfh(nvp, &nfh, p); 2746 if (!r) 2747 r = nfsvno_getattr(nvp, nvap, nd, p, 2748 1, &attrbits); 2749 if (r == 0 && is_zfs == 1 && 2750 nfsrv_enable_crossmntpt != 0 && 2751 (nd->nd_flag & ND_NFSV4) != 0 && 2752 nvp->v_type == VDIR && 2753 vp->v_mount != nvp->v_mount) { 2754 /* 2755 * For a ZFS snapshot, there is a 2756 * pseudo mount that does not set 2757 * v_mountedhere, so it needs to 2758 * be detected via a different 2759 * mount structure. 2760 */ 2761 at_root = 1; 2762 if (new_mp == mp) 2763 new_mp = nvp->v_mount; 2764 } 2765 } 2766 2767 /* 2768 * If we failed to get attributes of the entry, 2769 * then just skip it for NFSv3 (the traditional 2770 * behavior in the old NFS server). 2771 * For NFSv4 the behavior is controlled by 2772 * RDATTRERROR: we either ignore the error or 2773 * fail the request. 2774 * The exception is EOPNOTSUPP, which can be 2775 * returned by nfsvno_getfh() for certain 2776 * file systems, such as devfs. This indicates 2777 * that the file system cannot be exported, 2778 * so just skip over the entry. 2779 * Note that RDATTRERROR is never set for NFSv3. 2780 */ 2781 if (r != 0) { 2782 if (!NFSISSET_ATTRBIT(&attrbits, 2783 NFSATTRBIT_RDATTRERROR) || 2784 r == EOPNOTSUPP) { 2785 vput(nvp); 2786 if (needs_unbusy != 0) 2787 vfs_unbusy(new_mp); 2788 if ((nd->nd_flag & ND_NFSV3) || 2789 r == EOPNOTSUPP) 2790 goto invalid; 2791 nd->nd_repstat = r; 2792 break; 2793 } 2794 } 2795 } else if (NFSNONZERO_ATTRBIT(&attrbits)) { 2796 /* Only need Type and/or Fileid. */ 2797 VATTR_NULL(&nvap->na_vattr); 2798 nvap->na_fileid = dp->d_fileno; 2799 nvap->na_type = NFS_DTYPETOVTYPE(dp->d_type); 2800 } 2801 2802 /* 2803 * Build the directory record xdr 2804 */ 2805 if (nd->nd_flag & ND_NFSV3) { 2806 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2807 *tl++ = newnfs_true; 2808 txdr_hyper(dp->d_fileno, tl); 2809 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2810 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2811 txdr_hyper(*cookiep, tl); 2812 nfsrv_postopattr(nd, 0, nvap); 2813 dirlen += nfsm_fhtom(NULL, nd, (u_int8_t *)&nfh, 2814 0, 1); 2815 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2816 if (nvp != NULL) 2817 vput(nvp); 2818 } else { 2819 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2820 *tl++ = newnfs_true; 2821 txdr_hyper(*cookiep, tl); 2822 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2823 if (nvp != NULL) { 2824 supports_nfsv4acls = 2825 nfs_supportsnfsv4acls(nvp); 2826 NFSVOPUNLOCK(nvp); 2827 } else 2828 supports_nfsv4acls = 0; 2829 if (refp != NULL) { 2830 dirlen += nfsrv_putreferralattr(nd, 2831 &refbits, refp, 0, 2832 &nd->nd_repstat); 2833 if (nd->nd_repstat) { 2834 if (nvp != NULL) 2835 vrele(nvp); 2836 if (needs_unbusy != 0) 2837 vfs_unbusy(new_mp); 2838 break; 2839 } 2840 } else if (r) { 2841 dirlen += nfsvno_fillattr(nd, new_mp, 2842 nvp, nvap, &nfh, r, &rderrbits, 2843 nd->nd_cred, p, isdgram, 0, 2844 supports_nfsv4acls, at_root, 2845 mounted_on_fileno); 2846 } else { 2847 dirlen += nfsvno_fillattr(nd, new_mp, 2848 nvp, nvap, &nfh, r, &attrbits, 2849 nd->nd_cred, p, isdgram, 0, 2850 supports_nfsv4acls, at_root, 2851 mounted_on_fileno); 2852 } 2853 if (nvp != NULL) 2854 vrele(nvp); 2855 dirlen += (3 * NFSX_UNSIGNED); 2856 } 2857 if (needs_unbusy != 0) 2858 vfs_unbusy(new_mp); 2859 if (dirlen <= cnt) 2860 entrycnt++; 2861 } 2862 invalid: 2863 cpos += dp->d_reclen; 2864 dp = (struct dirent *)cpos; 2865 cookiep++; 2866 ncookies--; 2867 } 2868 vrele(vp); 2869 vfs_unbusy(mp); 2870 2871 /* 2872 * If dirlen > cnt, we must strip off the last entry. If that 2873 * results in an empty reply, report NFSERR_TOOSMALL. 2874 */ 2875 if (dirlen > cnt || nd->nd_repstat) { 2876 if (!nd->nd_repstat && entrycnt == 0) 2877 nd->nd_repstat = NFSERR_TOOSMALL; 2878 if (nd->nd_repstat) { 2879 nfsm_trimtrailing(nd, mb0, bpos0, bextpg0, bextpgsiz0); 2880 if (nd->nd_flag & ND_NFSV3) 2881 nfsrv_postopattr(nd, getret, &at); 2882 } else 2883 nfsm_trimtrailing(nd, mb1, bpos1, bextpg1, bextpgsiz1); 2884 eofflag = 0; 2885 } else if (cpos < cend) 2886 eofflag = 0; 2887 if (!nd->nd_repstat) { 2888 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2889 *tl++ = newnfs_false; 2890 if (eofflag) 2891 *tl = newnfs_true; 2892 else 2893 *tl = newnfs_false; 2894 } 2895 free(cookies, M_TEMP); 2896 free(rbuf, M_TEMP); 2897 2898 out: 2899 NFSEXITCODE2(0, nd); 2900 return (0); 2901 nfsmout: 2902 vput(vp); 2903 NFSEXITCODE2(error, nd); 2904 return (error); 2905 } 2906 2907 /* 2908 * Get the settable attributes out of the mbuf list. 2909 * (Return 0 or EBADRPC) 2910 */ 2911 int 2912 nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 2913 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2914 { 2915 u_int32_t *tl; 2916 struct nfsv2_sattr *sp; 2917 int error = 0, toclient = 0; 2918 2919 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2920 case ND_NFSV2: 2921 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2922 /* 2923 * Some old clients didn't fill in the high order 16bits. 2924 * --> check the low order 2 bytes for 0xffff 2925 */ 2926 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2927 nvap->na_mode = nfstov_mode(sp->sa_mode); 2928 if (sp->sa_uid != newnfs_xdrneg1) 2929 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2930 if (sp->sa_gid != newnfs_xdrneg1) 2931 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2932 if (sp->sa_size != newnfs_xdrneg1) 2933 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2934 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2935 #ifdef notyet 2936 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2937 #else 2938 nvap->na_atime.tv_sec = 2939 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2940 nvap->na_atime.tv_nsec = 0; 2941 #endif 2942 } 2943 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2944 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2945 break; 2946 case ND_NFSV3: 2947 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2948 if (*tl == newnfs_true) { 2949 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2950 nvap->na_mode = nfstov_mode(*tl); 2951 } 2952 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2953 if (*tl == newnfs_true) { 2954 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2955 nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2956 } 2957 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2958 if (*tl == newnfs_true) { 2959 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2960 nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2961 } 2962 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2963 if (*tl == newnfs_true) { 2964 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2965 nvap->na_size = fxdr_hyper(tl); 2966 } 2967 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2968 switch (fxdr_unsigned(int, *tl)) { 2969 case NFSV3SATTRTIME_TOCLIENT: 2970 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2971 fxdr_nfsv3time(tl, &nvap->na_atime); 2972 toclient = 1; 2973 break; 2974 case NFSV3SATTRTIME_TOSERVER: 2975 vfs_timestamp(&nvap->na_atime); 2976 nvap->na_vaflags |= VA_UTIMES_NULL; 2977 break; 2978 } 2979 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2980 switch (fxdr_unsigned(int, *tl)) { 2981 case NFSV3SATTRTIME_TOCLIENT: 2982 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2983 fxdr_nfsv3time(tl, &nvap->na_mtime); 2984 nvap->na_vaflags &= ~VA_UTIMES_NULL; 2985 break; 2986 case NFSV3SATTRTIME_TOSERVER: 2987 vfs_timestamp(&nvap->na_mtime); 2988 if (!toclient) 2989 nvap->na_vaflags |= VA_UTIMES_NULL; 2990 break; 2991 } 2992 break; 2993 case ND_NFSV4: 2994 error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p); 2995 } 2996 nfsmout: 2997 NFSEXITCODE2(error, nd); 2998 return (error); 2999 } 3000 3001 /* 3002 * Handle the setable attributes for V4. 3003 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 3004 */ 3005 int 3006 nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 3007 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 3008 { 3009 u_int32_t *tl; 3010 int attrsum = 0; 3011 int i, j; 3012 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 3013 int moderet, toclient = 0; 3014 u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 3015 uid_t uid; 3016 gid_t gid; 3017 u_short mode, mask; /* Same type as va_mode. */ 3018 struct vattr va; 3019 3020 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 3021 if (error) 3022 goto nfsmout; 3023 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3024 attrsize = fxdr_unsigned(int, *tl); 3025 3026 /* 3027 * Loop around getting the setable attributes. If an unsupported 3028 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 3029 */ 3030 if (retnotsup) { 3031 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3032 bitpos = NFSATTRBIT_MAX; 3033 } else { 3034 bitpos = 0; 3035 } 3036 moderet = 0; 3037 for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 3038 if (attrsum > attrsize) { 3039 error = NFSERR_BADXDR; 3040 goto nfsmout; 3041 } 3042 if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 3043 switch (bitpos) { 3044 case NFSATTRBIT_SIZE: 3045 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3046 if (vp != NULL && vp->v_type != VREG) { 3047 error = (vp->v_type == VDIR) ? NFSERR_ISDIR : 3048 NFSERR_INVAL; 3049 goto nfsmout; 3050 } 3051 nvap->na_size = fxdr_hyper(tl); 3052 attrsum += NFSX_HYPER; 3053 break; 3054 case NFSATTRBIT_ACL: 3055 error = nfsrv_dissectacl(nd, aclp, true, &aceerr, 3056 &aclsize, p); 3057 if (error) 3058 goto nfsmout; 3059 if (aceerr && !nd->nd_repstat) 3060 nd->nd_repstat = aceerr; 3061 attrsum += aclsize; 3062 break; 3063 case NFSATTRBIT_ARCHIVE: 3064 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3065 if (!nd->nd_repstat) 3066 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3067 attrsum += NFSX_UNSIGNED; 3068 break; 3069 case NFSATTRBIT_HIDDEN: 3070 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3071 if (!nd->nd_repstat) 3072 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3073 attrsum += NFSX_UNSIGNED; 3074 break; 3075 case NFSATTRBIT_MIMETYPE: 3076 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3077 i = fxdr_unsigned(int, *tl); 3078 error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 3079 if (error) 3080 goto nfsmout; 3081 if (!nd->nd_repstat) 3082 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3083 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 3084 break; 3085 case NFSATTRBIT_MODE: 3086 moderet = NFSERR_INVAL; /* Can't do MODESETMASKED. */ 3087 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3088 nvap->na_mode = nfstov_mode(*tl); 3089 attrsum += NFSX_UNSIGNED; 3090 break; 3091 case NFSATTRBIT_OWNER: 3092 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3093 j = fxdr_unsigned(int, *tl); 3094 if (j < 0) { 3095 error = NFSERR_BADXDR; 3096 goto nfsmout; 3097 } 3098 if (j > NFSV4_SMALLSTR) 3099 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3100 else 3101 cp = namestr; 3102 error = nfsrv_mtostr(nd, cp, j); 3103 if (error) { 3104 if (j > NFSV4_SMALLSTR) 3105 free(cp, M_NFSSTRING); 3106 goto nfsmout; 3107 } 3108 if (!nd->nd_repstat) { 3109 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, 3110 &uid); 3111 if (!nd->nd_repstat) 3112 nvap->na_uid = uid; 3113 } 3114 if (j > NFSV4_SMALLSTR) 3115 free(cp, M_NFSSTRING); 3116 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3117 break; 3118 case NFSATTRBIT_OWNERGROUP: 3119 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3120 j = fxdr_unsigned(int, *tl); 3121 if (j < 0) { 3122 error = NFSERR_BADXDR; 3123 goto nfsmout; 3124 } 3125 if (j > NFSV4_SMALLSTR) 3126 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3127 else 3128 cp = namestr; 3129 error = nfsrv_mtostr(nd, cp, j); 3130 if (error) { 3131 if (j > NFSV4_SMALLSTR) 3132 free(cp, M_NFSSTRING); 3133 goto nfsmout; 3134 } 3135 if (!nd->nd_repstat) { 3136 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, 3137 &gid); 3138 if (!nd->nd_repstat) 3139 nvap->na_gid = gid; 3140 } 3141 if (j > NFSV4_SMALLSTR) 3142 free(cp, M_NFSSTRING); 3143 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3144 break; 3145 case NFSATTRBIT_SYSTEM: 3146 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3147 if (!nd->nd_repstat) 3148 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3149 attrsum += NFSX_UNSIGNED; 3150 break; 3151 case NFSATTRBIT_TIMEACCESSSET: 3152 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3153 attrsum += NFSX_UNSIGNED; 3154 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3155 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3156 fxdr_nfsv4time(tl, &nvap->na_atime); 3157 toclient = 1; 3158 attrsum += NFSX_V4TIME; 3159 } else { 3160 vfs_timestamp(&nvap->na_atime); 3161 nvap->na_vaflags |= VA_UTIMES_NULL; 3162 } 3163 break; 3164 case NFSATTRBIT_TIMEBACKUP: 3165 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3166 if (!nd->nd_repstat) 3167 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3168 attrsum += NFSX_V4TIME; 3169 break; 3170 case NFSATTRBIT_TIMECREATE: 3171 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3172 fxdr_nfsv4time(tl, &nvap->na_btime); 3173 attrsum += NFSX_V4TIME; 3174 break; 3175 case NFSATTRBIT_TIMEMODIFYSET: 3176 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3177 attrsum += NFSX_UNSIGNED; 3178 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3179 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3180 fxdr_nfsv4time(tl, &nvap->na_mtime); 3181 nvap->na_vaflags &= ~VA_UTIMES_NULL; 3182 attrsum += NFSX_V4TIME; 3183 } else { 3184 vfs_timestamp(&nvap->na_mtime); 3185 if (!toclient) 3186 nvap->na_vaflags |= VA_UTIMES_NULL; 3187 } 3188 break; 3189 case NFSATTRBIT_MODESETMASKED: 3190 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 3191 mode = fxdr_unsigned(u_short, *tl++); 3192 mask = fxdr_unsigned(u_short, *tl); 3193 /* 3194 * vp == NULL implies an Open/Create operation. 3195 * This attribute can only be used for Setattr and 3196 * only for NFSv4.1 or higher. 3197 * If moderet != 0, a mode attribute has also been 3198 * specified and this attribute cannot be done in the 3199 * same Setattr operation. 3200 */ 3201 if ((nd->nd_flag & ND_NFSV41) == 0) 3202 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3203 else if ((mode & ~07777) != 0 || (mask & ~07777) != 0 || 3204 vp == NULL) 3205 nd->nd_repstat = NFSERR_INVAL; 3206 else if (moderet == 0) 3207 moderet = VOP_GETATTR(vp, &va, nd->nd_cred); 3208 if (moderet == 0) 3209 nvap->na_mode = (mode & mask) | 3210 (va.va_mode & ~mask); 3211 else 3212 nd->nd_repstat = moderet; 3213 attrsum += 2 * NFSX_UNSIGNED; 3214 break; 3215 case NFSATTRBIT_MODEUMASK: 3216 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 3217 mode = fxdr_unsigned(u_short, *tl++); 3218 mask = fxdr_unsigned(u_short, *tl); 3219 /* 3220 * If moderet != 0, mode has already been done. 3221 * If vp != NULL, this is not a file object creation. 3222 */ 3223 if ((nd->nd_flag & ND_NFSV42) == 0) 3224 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3225 else if ((mask & ~0777) != 0 || vp != NULL || 3226 moderet != 0) 3227 nd->nd_repstat = NFSERR_INVAL; 3228 else 3229 nvap->na_mode = (mode & ~mask); 3230 attrsum += 2 * NFSX_UNSIGNED; 3231 break; 3232 default: 3233 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3234 /* 3235 * set bitpos so we drop out of the loop. 3236 */ 3237 bitpos = NFSATTRBIT_MAX; 3238 break; 3239 } 3240 } 3241 3242 /* 3243 * some clients pad the attrlist, so we need to skip over the 3244 * padding. 3245 */ 3246 if (attrsum > attrsize) { 3247 error = NFSERR_BADXDR; 3248 } else { 3249 attrsize = NFSM_RNDUP(attrsize); 3250 if (attrsum < attrsize) 3251 error = nfsm_advance(nd, attrsize - attrsum, -1); 3252 } 3253 nfsmout: 3254 NFSEXITCODE2(error, nd); 3255 return (error); 3256 } 3257 3258 /* 3259 * Check/setup export credentials. 3260 */ 3261 int 3262 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 3263 struct ucred *credanon, bool testsec) 3264 { 3265 int error; 3266 3267 /* 3268 * Check/setup credentials. 3269 */ 3270 if (nd->nd_flag & ND_GSS) 3271 exp->nes_exflag &= ~MNT_EXPORTANON; 3272 3273 /* 3274 * Check to see if the operation is allowed for this security flavor. 3275 */ 3276 error = 0; 3277 if (testsec) { 3278 error = nfsvno_testexp(nd, exp); 3279 if (error != 0) 3280 goto out; 3281 } 3282 3283 /* 3284 * Check to see if the file system is exported V4 only. 3285 */ 3286 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 3287 error = NFSERR_PROGNOTV4; 3288 goto out; 3289 } 3290 3291 /* 3292 * Now, map the user credentials. 3293 * (Note that ND_AUTHNONE will only be set for an NFSv3 3294 * Fsinfo RPC. If set for anything else, this code might need 3295 * to change.) 3296 */ 3297 if (NFSVNO_EXPORTED(exp)) { 3298 if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) || 3299 NFSVNO_EXPORTANON(exp) || 3300 (nd->nd_flag & ND_AUTHNONE) != 0) { 3301 nd->nd_cred->cr_uid = credanon->cr_uid; 3302 nd->nd_cred->cr_gid = credanon->cr_gid; 3303 crsetgroups(nd->nd_cred, credanon->cr_ngroups, 3304 credanon->cr_groups); 3305 } else if ((nd->nd_flag & ND_GSS) == 0) { 3306 /* 3307 * If using AUTH_SYS, call nfsrv_getgrpscred() to see 3308 * if there is a replacement credential with a group 3309 * list set up by "nfsuserd -manage-gids". 3310 * If there is no replacement, nfsrv_getgrpscred() 3311 * simply returns its argument. 3312 */ 3313 nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred); 3314 } 3315 } 3316 3317 out: 3318 NFSEXITCODE2(error, nd); 3319 return (error); 3320 } 3321 3322 /* 3323 * Check exports. 3324 */ 3325 int 3326 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 3327 struct ucred **credp) 3328 { 3329 int error; 3330 3331 error = 0; 3332 *credp = NULL; 3333 MNT_ILOCK(mp); 3334 if (mp->mnt_exjail == NULL || 3335 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3336 error = EACCES; 3337 MNT_IUNLOCK(mp); 3338 if (error == 0) 3339 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3340 &exp->nes_numsecflavor, exp->nes_secflavors); 3341 if (error) { 3342 if (NFSD_VNET(nfs_rootfhset)) { 3343 exp->nes_exflag = 0; 3344 exp->nes_numsecflavor = 0; 3345 error = 0; 3346 } 3347 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3348 MAXSECFLAVORS) { 3349 printf("nfsvno_checkexp: numsecflavors out of range\n"); 3350 exp->nes_numsecflavor = 0; 3351 error = EACCES; 3352 } 3353 NFSEXITCODE(error); 3354 return (error); 3355 } 3356 3357 /* 3358 * Get a vnode for a file handle and export stuff. 3359 */ 3360 int 3361 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 3362 int lktype, struct vnode **vpp, struct nfsexstuff *exp, 3363 struct ucred **credp) 3364 { 3365 int error; 3366 3367 *credp = NULL; 3368 exp->nes_numsecflavor = 0; 3369 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 3370 if (error != 0) 3371 /* Make sure the server replies ESTALE to the client. */ 3372 error = ESTALE; 3373 if (nam && !error) { 3374 MNT_ILOCK(mp); 3375 if (mp->mnt_exjail == NULL || 3376 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3377 error = EACCES; 3378 MNT_IUNLOCK(mp); 3379 if (error == 0) 3380 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3381 &exp->nes_numsecflavor, exp->nes_secflavors); 3382 if (error) { 3383 if (NFSD_VNET(nfs_rootfhset)) { 3384 exp->nes_exflag = 0; 3385 exp->nes_numsecflavor = 0; 3386 error = 0; 3387 } else { 3388 vput(*vpp); 3389 } 3390 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3391 MAXSECFLAVORS) { 3392 printf("nfsvno_fhtovp: numsecflavors out of range\n"); 3393 exp->nes_numsecflavor = 0; 3394 error = EACCES; 3395 vput(*vpp); 3396 } 3397 } 3398 NFSEXITCODE(error); 3399 return (error); 3400 } 3401 3402 /* 3403 * nfsd_fhtovp() - convert a fh to a vnode ptr 3404 * - look up fsid in mount list (if not found ret error) 3405 * - get vp and export rights by calling nfsvno_fhtovp() 3406 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 3407 * for AUTH_SYS 3408 * - if mpp != NULL, return the mount point so that it can 3409 * be used for vn_finished_write() by the caller 3410 */ 3411 void 3412 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 3413 struct vnode **vpp, struct nfsexstuff *exp, 3414 struct mount **mpp, int startwrite, int nextop) 3415 { 3416 struct mount *mp, *mpw; 3417 struct ucred *credanon; 3418 fhandle_t *fhp; 3419 int error; 3420 3421 if (mpp != NULL) 3422 *mpp = NULL; 3423 *vpp = NULL; 3424 fhp = (fhandle_t *)nfp->nfsrvfh_data; 3425 mp = vfs_busyfs(&fhp->fh_fsid); 3426 if (mp == NULL) { 3427 nd->nd_repstat = ESTALE; 3428 goto out; 3429 } 3430 3431 if (startwrite) { 3432 mpw = mp; 3433 error = vn_start_write(NULL, &mpw, V_WAIT); 3434 if (error != 0) { 3435 mpw = NULL; 3436 vfs_unbusy(mp); 3437 nd->nd_repstat = ESTALE; 3438 goto out; 3439 } 3440 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 3441 lktype = LK_EXCLUSIVE; 3442 } else 3443 mpw = NULL; 3444 3445 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 3446 &credanon); 3447 vfs_unbusy(mp); 3448 3449 /* 3450 * For NFSv4 without a pseudo root fs, unexported file handles 3451 * can be returned, so that Lookup works everywhere. 3452 */ 3453 if (!nd->nd_repstat && exp->nes_exflag == 0 && 3454 !(nd->nd_flag & ND_NFSV4)) { 3455 vput(*vpp); 3456 *vpp = NULL; 3457 nd->nd_repstat = EACCES; 3458 } 3459 3460 /* 3461 * Personally, I've never seen any point in requiring a 3462 * reserved port#, since only in the rare case where the 3463 * clients are all boxes with secure system privileges, 3464 * does it provide any enhanced security, but... some people 3465 * believe it to be useful and keep putting this code back in. 3466 * (There is also some "security checker" out there that 3467 * complains if the nfs server doesn't enforce this.) 3468 * However, note the following: 3469 * RFC3530 (NFSv4) specifies that a reserved port# not be 3470 * required. 3471 * RFC2623 recommends that, if a reserved port# is checked for, 3472 * that there be a way to turn that off--> ifdef'd. 3473 */ 3474 #ifdef NFS_REQRSVPORT 3475 if (!nd->nd_repstat) { 3476 struct sockaddr_in *saddr; 3477 struct sockaddr_in6 *saddr6; 3478 3479 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 3480 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 3481 if (!(nd->nd_flag & ND_NFSV4) && 3482 ((saddr->sin_family == AF_INET && 3483 ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 3484 (saddr6->sin6_family == AF_INET6 && 3485 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 3486 vput(*vpp); 3487 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 3488 } 3489 } 3490 #endif /* NFS_REQRSVPORT */ 3491 3492 /* 3493 * Check/setup credentials. 3494 */ 3495 if (!nd->nd_repstat) { 3496 nd->nd_saveduid = nd->nd_cred->cr_uid; 3497 nd->nd_repstat = nfsd_excred(nd, exp, credanon, 3498 nfsrv_checkwrongsec(nd, nextop, (*vpp)->v_type)); 3499 if (nd->nd_repstat) 3500 vput(*vpp); 3501 } 3502 if (credanon != NULL) 3503 crfree(credanon); 3504 if (nd->nd_repstat) { 3505 vn_finished_write(mpw); 3506 *vpp = NULL; 3507 } else if (mpp != NULL) { 3508 *mpp = mpw; 3509 } 3510 3511 out: 3512 NFSEXITCODE2(0, nd); 3513 } 3514 3515 /* 3516 * glue for fp. 3517 */ 3518 static int 3519 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 3520 { 3521 struct filedesc *fdp; 3522 struct file *fp; 3523 int error = 0; 3524 3525 fdp = p->td_proc->p_fd; 3526 if (fd < 0 || fd >= fdp->fd_nfiles || 3527 (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 3528 error = EBADF; 3529 goto out; 3530 } 3531 *fpp = fp; 3532 3533 out: 3534 NFSEXITCODE(error); 3535 return (error); 3536 } 3537 3538 /* 3539 * Called from nfssvc() to update the exports list. Just call 3540 * vfs_export(). This has to be done, since the v4 root fake fs isn't 3541 * in the mount list. 3542 */ 3543 int 3544 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 3545 { 3546 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 3547 int error = 0; 3548 struct nameidata nd; 3549 fhandle_t fh; 3550 3551 error = vfs_export(NFSD_VNET(nfsv4root_mnt), &nfsexargp->export, false); 3552 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 3553 NFSD_VNET(nfs_rootfhset) = 0; 3554 else if (error == 0) { 3555 if (nfsexargp->fspec == NULL) { 3556 error = EPERM; 3557 goto out; 3558 } 3559 /* 3560 * If fspec != NULL, this is the v4root path. 3561 */ 3562 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, nfsexargp->fspec); 3563 if ((error = namei(&nd)) != 0) 3564 goto out; 3565 error = nfsvno_getfh(nd.ni_vp, &fh, p); 3566 vrele(nd.ni_vp); 3567 if (!error) { 3568 NFSD_VNET(nfs_rootfh).nfsrvfh_len = NFSX_MYFH; 3569 NFSBCOPY((caddr_t)&fh, 3570 NFSD_VNET(nfs_rootfh).nfsrvfh_data, 3571 sizeof (fhandle_t)); 3572 NFSD_VNET(nfs_rootfhset) = 1; 3573 } 3574 } 3575 3576 out: 3577 NFSEXITCODE(error); 3578 return (error); 3579 } 3580 3581 /* 3582 * This function needs to test to see if the system is near its limit 3583 * for memory allocation via malloc() or mget() and return True iff 3584 * either of these resources are near their limit. 3585 * XXX (For now, this is just a stub.) 3586 */ 3587 int nfsrv_testmalloclimit = 0; 3588 int 3589 nfsrv_mallocmget_limit(void) 3590 { 3591 static int printmesg = 0; 3592 static int testval = 1; 3593 3594 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 3595 if ((printmesg++ % 100) == 0) 3596 printf("nfsd: malloc/mget near limit\n"); 3597 return (1); 3598 } 3599 return (0); 3600 } 3601 3602 /* 3603 * BSD specific initialization of a mount point. 3604 */ 3605 void 3606 nfsd_mntinit(void) 3607 { 3608 3609 NFSD_LOCK(); 3610 if (NFSD_VNET(nfsrv_mntinited)) { 3611 NFSD_UNLOCK(); 3612 return; 3613 } 3614 NFSD_VNET(nfsrv_mntinited) = true; 3615 nfsrvd_init(0); 3616 NFSD_UNLOCK(); 3617 3618 NFSD_VNET(nfsv4root_mnt) = malloc(sizeof(struct mount), M_TEMP, 3619 M_WAITOK | M_ZERO); 3620 NFSD_VNET(nfsv4root_mnt)->mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 3621 mtx_init(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx, "nfs4mnt", NULL, MTX_DEF); 3622 lockinit(&NFSD_VNET(nfsv4root_mnt)->mnt_explock, PVFS, "explock", 0, 0); 3623 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelist); 3624 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelist); 3625 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 3626 TAILQ_INIT(&NFSD_VNET(nfsv4root_opt)); 3627 TAILQ_INIT(&NFSD_VNET(nfsv4root_newopt)); 3628 NFSD_VNET(nfsv4root_mnt)->mnt_opt = &NFSD_VNET(nfsv4root_opt); 3629 NFSD_VNET(nfsv4root_mnt)->mnt_optnew = &NFSD_VNET(nfsv4root_newopt); 3630 NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelistsize = 0; 3631 NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelistsize = 0; 3632 callout_init(&NFSD_VNET(nfsd_callout), 1); 3633 3634 nfsrvd_initcache(); 3635 nfsd_init(); 3636 } 3637 3638 static void 3639 nfsd_timer(void *arg) 3640 { 3641 struct vnet *vnetp; 3642 3643 vnetp = (struct vnet *)arg; 3644 NFSD_CURVNET_SET_QUIET(vnetp); 3645 nfsrv_servertimer(vnetp); 3646 callout_reset_sbt(&NFSD_VNET(nfsd_callout), SBT_1S, SBT_1S, nfsd_timer, 3647 arg, 0); 3648 NFSD_CURVNET_RESTORE(); 3649 } 3650 3651 /* 3652 * Get a vnode for a file handle, without checking exports, etc. 3653 */ 3654 struct vnode * 3655 nfsvno_getvp(fhandle_t *fhp) 3656 { 3657 struct mount *mp; 3658 struct vnode *vp; 3659 int error; 3660 3661 mp = vfs_busyfs(&fhp->fh_fsid); 3662 if (mp == NULL) 3663 return (NULL); 3664 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 3665 vfs_unbusy(mp); 3666 if (error) 3667 return (NULL); 3668 return (vp); 3669 } 3670 3671 /* 3672 * Do a local VOP_ADVLOCK(). 3673 */ 3674 int 3675 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 3676 u_int64_t end, struct thread *td) 3677 { 3678 int error = 0; 3679 struct flock fl; 3680 u_int64_t tlen; 3681 3682 if (nfsrv_dolocallocks == 0) 3683 goto out; 3684 ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked"); 3685 3686 fl.l_whence = SEEK_SET; 3687 fl.l_type = ftype; 3688 fl.l_start = (off_t)first; 3689 if (end == NFS64BITSSET) { 3690 fl.l_len = 0; 3691 } else { 3692 tlen = end - first; 3693 fl.l_len = (off_t)tlen; 3694 } 3695 /* 3696 * For FreeBSD8, the l_pid and l_sysid must be set to the same 3697 * values for all calls, so that all locks will be held by the 3698 * nfsd server. (The nfsd server handles conflicts between the 3699 * various clients.) 3700 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 3701 * bytes, so it can't be put in l_sysid. 3702 */ 3703 if (nfsv4_sysid == 0) 3704 nfsv4_sysid = nlm_acquire_next_sysid(); 3705 fl.l_pid = (pid_t)0; 3706 fl.l_sysid = (int)nfsv4_sysid; 3707 3708 if (ftype == F_UNLCK) 3709 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3710 (F_POSIX | F_REMOTE)); 3711 else 3712 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3713 (F_POSIX | F_REMOTE)); 3714 3715 out: 3716 NFSEXITCODE(error); 3717 return (error); 3718 } 3719 3720 /* 3721 * Check the nfsv4 root exports. 3722 */ 3723 int 3724 nfsvno_v4rootexport(struct nfsrv_descript *nd) 3725 { 3726 struct ucred *credanon; 3727 int error = 0, numsecflavor, secflavors[MAXSECFLAVORS], i; 3728 uint64_t exflags; 3729 3730 error = vfs_stdcheckexp(NFSD_VNET(nfsv4root_mnt), nd->nd_nam, &exflags, 3731 &credanon, &numsecflavor, secflavors); 3732 if (error) { 3733 error = NFSERR_PROGUNAVAIL; 3734 goto out; 3735 } 3736 if (credanon != NULL) 3737 crfree(credanon); 3738 for (i = 0; i < numsecflavor; i++) { 3739 if (secflavors[i] == AUTH_SYS) 3740 nd->nd_flag |= ND_EXAUTHSYS; 3741 else if (secflavors[i] == RPCSEC_GSS_KRB5) 3742 nd->nd_flag |= ND_EXGSS; 3743 else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3744 nd->nd_flag |= ND_EXGSSINTEGRITY; 3745 else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3746 nd->nd_flag |= ND_EXGSSPRIVACY; 3747 } 3748 3749 /* And set ND_EXxx flags for TLS. */ 3750 if ((exflags & MNT_EXTLS) != 0) { 3751 nd->nd_flag |= ND_EXTLS; 3752 if ((exflags & MNT_EXTLSCERT) != 0) 3753 nd->nd_flag |= ND_EXTLSCERT; 3754 if ((exflags & MNT_EXTLSCERTUSER) != 0) 3755 nd->nd_flag |= ND_EXTLSCERTUSER; 3756 } 3757 3758 out: 3759 NFSEXITCODE(error); 3760 return (error); 3761 } 3762 3763 /* 3764 * Nfs server pseudo system call for the nfsd's 3765 */ 3766 /* 3767 * MPSAFE 3768 */ 3769 static int 3770 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3771 { 3772 struct file *fp; 3773 struct nfsd_addsock_args sockarg; 3774 struct nfsd_nfsd_args nfsdarg; 3775 struct nfsd_nfsd_oargs onfsdarg; 3776 struct nfsd_pnfsd_args pnfsdarg; 3777 struct vnode *vp, *nvp, *curdvp; 3778 struct pnfsdsfile *pf; 3779 struct nfsdevice *ds, *fds; 3780 cap_rights_t rights; 3781 int buflen, error, ret; 3782 char *buf, *cp, *cp2, *cp3; 3783 char fname[PNFS_FILENAME_LEN + 1]; 3784 3785 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td)); 3786 if (uap->flag & NFSSVC_NFSDADDSOCK) { 3787 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3788 if (error) 3789 goto out; 3790 /* 3791 * Since we don't know what rights might be required, 3792 * pretend that we need them all. It is better to be too 3793 * careful than too reckless. 3794 */ 3795 error = fget(td, sockarg.sock, 3796 cap_rights_init_one(&rights, CAP_SOCK_SERVER), &fp); 3797 if (error != 0) 3798 goto out; 3799 if (fp->f_type != DTYPE_SOCKET) { 3800 fdrop(fp, td); 3801 error = EPERM; 3802 goto out; 3803 } 3804 error = nfsrvd_addsock(fp); 3805 fdrop(fp, td); 3806 } else if (uap->flag & NFSSVC_NFSDNFSD) { 3807 if (uap->argp == NULL) { 3808 error = EINVAL; 3809 goto out; 3810 } 3811 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 3812 error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg)); 3813 if (error == 0) { 3814 nfsdarg.principal = onfsdarg.principal; 3815 nfsdarg.minthreads = onfsdarg.minthreads; 3816 nfsdarg.maxthreads = onfsdarg.maxthreads; 3817 nfsdarg.version = 1; 3818 nfsdarg.addr = NULL; 3819 nfsdarg.addrlen = 0; 3820 nfsdarg.dnshost = NULL; 3821 nfsdarg.dnshostlen = 0; 3822 nfsdarg.dspath = NULL; 3823 nfsdarg.dspathlen = 0; 3824 nfsdarg.mdspath = NULL; 3825 nfsdarg.mdspathlen = 0; 3826 nfsdarg.mirrorcnt = 1; 3827 } 3828 } else 3829 error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg)); 3830 if (error) 3831 goto out; 3832 if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 && 3833 nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 && 3834 nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 && 3835 nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 && 3836 nfsdarg.mirrorcnt >= 1 && 3837 nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS && 3838 nfsdarg.addr != NULL && nfsdarg.dnshost != NULL && 3839 nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) { 3840 NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d" 3841 " mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen, 3842 nfsdarg.dspathlen, nfsdarg.dnshostlen, 3843 nfsdarg.mdspathlen, nfsdarg.mirrorcnt); 3844 cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK); 3845 error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen); 3846 if (error != 0) { 3847 free(cp, M_TEMP); 3848 goto out; 3849 } 3850 cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */ 3851 nfsdarg.addr = cp; 3852 cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK); 3853 error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen); 3854 if (error != 0) { 3855 free(nfsdarg.addr, M_TEMP); 3856 free(cp, M_TEMP); 3857 goto out; 3858 } 3859 cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */ 3860 nfsdarg.dnshost = cp; 3861 cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK); 3862 error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen); 3863 if (error != 0) { 3864 free(nfsdarg.addr, M_TEMP); 3865 free(nfsdarg.dnshost, M_TEMP); 3866 free(cp, M_TEMP); 3867 goto out; 3868 } 3869 cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */ 3870 nfsdarg.dspath = cp; 3871 cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK); 3872 error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen); 3873 if (error != 0) { 3874 free(nfsdarg.addr, M_TEMP); 3875 free(nfsdarg.dnshost, M_TEMP); 3876 free(nfsdarg.dspath, M_TEMP); 3877 free(cp, M_TEMP); 3878 goto out; 3879 } 3880 cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */ 3881 nfsdarg.mdspath = cp; 3882 } else { 3883 nfsdarg.addr = NULL; 3884 nfsdarg.addrlen = 0; 3885 nfsdarg.dnshost = NULL; 3886 nfsdarg.dnshostlen = 0; 3887 nfsdarg.dspath = NULL; 3888 nfsdarg.dspathlen = 0; 3889 nfsdarg.mdspath = NULL; 3890 nfsdarg.mdspathlen = 0; 3891 nfsdarg.mirrorcnt = 1; 3892 } 3893 nfsd_timer(NFSD_TD_TO_VNET(td)); 3894 error = nfsrvd_nfsd(td, &nfsdarg); 3895 callout_drain(&NFSD_VNET(nfsd_callout)); 3896 free(nfsdarg.addr, M_TEMP); 3897 free(nfsdarg.dnshost, M_TEMP); 3898 free(nfsdarg.dspath, M_TEMP); 3899 free(nfsdarg.mdspath, M_TEMP); 3900 } else if (uap->flag & NFSSVC_PNFSDS) { 3901 error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg)); 3902 if (error == 0 && (pnfsdarg.op == PNFSDOP_DELDSSERVER || 3903 pnfsdarg.op == PNFSDOP_FORCEDELDS)) { 3904 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3905 error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1, 3906 NULL); 3907 if (error == 0) 3908 error = nfsrv_deldsserver(pnfsdarg.op, cp, td); 3909 free(cp, M_TEMP); 3910 } else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) { 3911 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3912 buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS; 3913 buf = malloc(buflen, M_TEMP, M_WAITOK); 3914 error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1, 3915 NULL); 3916 NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error); 3917 if (error == 0 && pnfsdarg.dspath != NULL) { 3918 cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3919 error = copyinstr(pnfsdarg.dspath, cp2, 3920 PATH_MAX + 1, NULL); 3921 NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n", 3922 error); 3923 } else 3924 cp2 = NULL; 3925 if (error == 0 && pnfsdarg.curdspath != NULL) { 3926 cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3927 error = copyinstr(pnfsdarg.curdspath, cp3, 3928 PATH_MAX + 1, NULL); 3929 NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n", 3930 error); 3931 } else 3932 cp3 = NULL; 3933 curdvp = NULL; 3934 fds = NULL; 3935 if (error == 0) 3936 error = nfsrv_mdscopymr(cp, cp2, cp3, buf, 3937 &buflen, fname, td, &vp, &nvp, &pf, &ds, 3938 &fds); 3939 NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error); 3940 if (error == 0) { 3941 if (pf->dsf_dir >= nfsrv_dsdirsize) { 3942 printf("copymr: dsdir out of range\n"); 3943 pf->dsf_dir = 0; 3944 } 3945 NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen); 3946 error = nfsrv_copymr(vp, nvp, 3947 ds->nfsdev_dsdir[pf->dsf_dir], ds, pf, 3948 (struct pnfsdsfile *)buf, 3949 buflen / sizeof(*pf), td->td_ucred, td); 3950 vput(vp); 3951 vput(nvp); 3952 if (fds != NULL && error == 0) { 3953 curdvp = fds->nfsdev_dsdir[pf->dsf_dir]; 3954 ret = vn_lock(curdvp, LK_EXCLUSIVE); 3955 if (ret == 0) { 3956 nfsrv_dsremove(curdvp, fname, 3957 td->td_ucred, td); 3958 NFSVOPUNLOCK(curdvp); 3959 } 3960 } 3961 NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error); 3962 } 3963 free(cp, M_TEMP); 3964 free(cp2, M_TEMP); 3965 free(cp3, M_TEMP); 3966 free(buf, M_TEMP); 3967 } 3968 } else { 3969 error = nfssvc_srvcall(td, uap, td->td_ucred); 3970 } 3971 3972 out: 3973 NFSD_CURVNET_RESTORE(); 3974 NFSEXITCODE(error); 3975 return (error); 3976 } 3977 3978 static int 3979 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3980 { 3981 struct nfsex_args export; 3982 struct nfsex_oldargs oexp; 3983 struct file *fp = NULL; 3984 int stablefd, i, len; 3985 struct nfsd_clid adminrevoke; 3986 struct nfsd_dumplist dumplist; 3987 struct nfsd_dumpclients *dumpclients; 3988 struct nfsd_dumplocklist dumplocklist; 3989 struct nfsd_dumplocks *dumplocks; 3990 struct nameidata nd; 3991 vnode_t vp; 3992 int error = EINVAL, igotlock; 3993 struct proc *procp; 3994 gid_t *grps; 3995 3996 if (uap->flag & NFSSVC_PUBLICFH) { 3997 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3998 sizeof (fhandle_t)); 3999 error = copyin(uap->argp, 4000 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 4001 if (!error) 4002 nfs_pubfhset = 1; 4003 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 4004 (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) { 4005 error = copyin(uap->argp,(caddr_t)&export, 4006 sizeof (struct nfsex_args)); 4007 if (!error) { 4008 grps = NULL; 4009 if (export.export.ex_ngroups > NGROUPS_MAX || 4010 export.export.ex_ngroups < 0) 4011 error = EINVAL; 4012 else if (export.export.ex_ngroups > 0) { 4013 grps = malloc(export.export.ex_ngroups * 4014 sizeof(gid_t), M_TEMP, M_WAITOK); 4015 error = copyin(export.export.ex_groups, grps, 4016 export.export.ex_ngroups * sizeof(gid_t)); 4017 export.export.ex_groups = grps; 4018 } else 4019 export.export.ex_groups = NULL; 4020 if (!error) 4021 error = nfsrv_v4rootexport(&export, cred, p); 4022 free(grps, M_TEMP); 4023 } 4024 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 4025 NFSSVC_V4ROOTEXPORT) { 4026 error = copyin(uap->argp,(caddr_t)&oexp, 4027 sizeof (struct nfsex_oldargs)); 4028 if (!error) { 4029 memset(&export.export, 0, sizeof(export.export)); 4030 export.export.ex_flags = (uint64_t)oexp.export.ex_flags; 4031 export.export.ex_root = oexp.export.ex_root; 4032 export.export.ex_uid = oexp.export.ex_anon.cr_uid; 4033 export.export.ex_ngroups = 4034 oexp.export.ex_anon.cr_ngroups; 4035 export.export.ex_groups = NULL; 4036 if (export.export.ex_ngroups > XU_NGROUPS || 4037 export.export.ex_ngroups < 0) 4038 error = EINVAL; 4039 else if (export.export.ex_ngroups > 0) { 4040 export.export.ex_groups = malloc( 4041 export.export.ex_ngroups * sizeof(gid_t), 4042 M_TEMP, M_WAITOK); 4043 for (i = 0; i < export.export.ex_ngroups; i++) 4044 export.export.ex_groups[i] = 4045 oexp.export.ex_anon.cr_groups[i]; 4046 } 4047 export.export.ex_addr = oexp.export.ex_addr; 4048 export.export.ex_addrlen = oexp.export.ex_addrlen; 4049 export.export.ex_mask = oexp.export.ex_mask; 4050 export.export.ex_masklen = oexp.export.ex_masklen; 4051 export.export.ex_indexfile = oexp.export.ex_indexfile; 4052 export.export.ex_numsecflavors = 4053 oexp.export.ex_numsecflavors; 4054 if (export.export.ex_numsecflavors >= MAXSECFLAVORS || 4055 export.export.ex_numsecflavors < 0) 4056 error = EINVAL; 4057 else { 4058 for (i = 0; i < export.export.ex_numsecflavors; 4059 i++) 4060 export.export.ex_secflavors[i] = 4061 oexp.export.ex_secflavors[i]; 4062 } 4063 export.fspec = oexp.fspec; 4064 if (error == 0) 4065 error = nfsrv_v4rootexport(&export, cred, p); 4066 free(export.export.ex_groups, M_TEMP); 4067 } 4068 } else if (uap->flag & NFSSVC_NOPUBLICFH) { 4069 nfs_pubfhset = 0; 4070 error = 0; 4071 } else if (uap->flag & NFSSVC_STABLERESTART) { 4072 error = copyin(uap->argp, (caddr_t)&stablefd, 4073 sizeof (int)); 4074 if (!error) 4075 error = fp_getfvp(p, stablefd, &fp, &vp); 4076 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 4077 error = EBADF; 4078 if (!error && NFSD_VNET(nfsrv_numnfsd) != 0) 4079 error = ENXIO; 4080 if (!error) { 4081 NFSD_VNET(nfsrv_stablefirst).nsf_fp = fp; 4082 nfsrv_setupstable(p); 4083 } 4084 } else if (uap->flag & NFSSVC_ADMINREVOKE) { 4085 error = copyin(uap->argp, (caddr_t)&adminrevoke, 4086 sizeof (struct nfsd_clid)); 4087 if (!error) 4088 error = nfsrv_adminrevoke(&adminrevoke, p); 4089 } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 4090 error = copyin(uap->argp, (caddr_t)&dumplist, 4091 sizeof (struct nfsd_dumplist)); 4092 if (!error && (dumplist.ndl_size < 1 || 4093 dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 4094 error = EPERM; 4095 if (!error) { 4096 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 4097 dumpclients = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4098 nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 4099 error = copyout(dumpclients, dumplist.ndl_list, len); 4100 free(dumpclients, M_TEMP); 4101 } 4102 } else if (uap->flag & NFSSVC_DUMPLOCKS) { 4103 error = copyin(uap->argp, (caddr_t)&dumplocklist, 4104 sizeof (struct nfsd_dumplocklist)); 4105 if (!error && (dumplocklist.ndllck_size < 1 || 4106 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 4107 error = EPERM; 4108 if (!error) 4109 error = nfsrv_lookupfilename(&nd, 4110 dumplocklist.ndllck_fname, p); 4111 if (!error) { 4112 len = sizeof (struct nfsd_dumplocks) * 4113 dumplocklist.ndllck_size; 4114 dumplocks = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4115 nfsrv_dumplocks(nd.ni_vp, dumplocks, 4116 dumplocklist.ndllck_size, p); 4117 vput(nd.ni_vp); 4118 error = copyout(dumplocks, dumplocklist.ndllck_list, 4119 len); 4120 free(dumplocks, M_TEMP); 4121 } 4122 } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 4123 procp = p->td_proc; 4124 PROC_LOCK(procp); 4125 nfsd_master_pid = procp->p_pid; 4126 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 4127 nfsd_master_start = procp->p_stats->p_start; 4128 NFSD_VNET(nfsd_master_proc) = procp; 4129 PROC_UNLOCK(procp); 4130 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 4131 NFSLOCKV4ROOTMUTEX(); 4132 if (!NFSD_VNET(nfsrv_suspend_nfsd)) { 4133 /* Lock out all nfsd threads */ 4134 do { 4135 igotlock = nfsv4_lock( 4136 &NFSD_VNET(nfsd_suspend_lock), 1, NULL, 4137 NFSV4ROOTLOCKMUTEXPTR, NULL); 4138 } while (igotlock == 0 && 4139 !NFSD_VNET(nfsrv_suspend_nfsd)); 4140 NFSD_VNET(nfsrv_suspend_nfsd) = true; 4141 } 4142 NFSUNLOCKV4ROOTMUTEX(); 4143 error = 0; 4144 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 4145 NFSLOCKV4ROOTMUTEX(); 4146 if (NFSD_VNET(nfsrv_suspend_nfsd)) { 4147 nfsv4_unlock(&NFSD_VNET(nfsd_suspend_lock), 0); 4148 NFSD_VNET(nfsrv_suspend_nfsd) = false; 4149 } 4150 NFSUNLOCKV4ROOTMUTEX(); 4151 error = 0; 4152 } 4153 4154 NFSEXITCODE(error); 4155 return (error); 4156 } 4157 4158 /* 4159 * Check exports. 4160 * Returns 0 if ok, 1 otherwise. 4161 */ 4162 int 4163 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 4164 { 4165 int i; 4166 4167 if ((NFSVNO_EXTLS(exp) && (nd->nd_flag & ND_TLS) == 0) || 4168 (NFSVNO_EXTLSCERT(exp) && 4169 (nd->nd_flag & ND_TLSCERT) == 0) || 4170 (NFSVNO_EXTLSCERTUSER(exp) && 4171 (nd->nd_flag & ND_TLSCERTUSER) == 0)) { 4172 if ((nd->nd_flag & ND_NFSV4) != 0) 4173 return (NFSERR_WRONGSEC); 4174 #ifdef notnow 4175 /* There is currently no auth_stat for this. */ 4176 else if ((nd->nd_flag & ND_TLS) == 0) 4177 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS); 4178 else 4179 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS_MUTUAL_HOST); 4180 #endif 4181 else 4182 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4183 } 4184 4185 /* 4186 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to use 4187 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 4188 */ 4189 if ((nd->nd_flag & ND_NFSV3) != 0 && nd->nd_procnum == NFSPROC_FSINFO) 4190 return (0); 4191 4192 /* 4193 * This seems odd, but allow the case where the security flavor 4194 * list is empty. This happens when NFSv4 is traversing non-exported 4195 * file systems. Exported file systems should always have a non-empty 4196 * security flavor list. 4197 */ 4198 if (exp->nes_numsecflavor == 0) 4199 return (0); 4200 4201 for (i = 0; i < exp->nes_numsecflavor; i++) { 4202 /* 4203 * The tests for privacy and integrity must be first, 4204 * since ND_GSS is set for everything but AUTH_SYS. 4205 */ 4206 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 4207 (nd->nd_flag & ND_GSSPRIVACY)) 4208 return (0); 4209 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 4210 (nd->nd_flag & ND_GSSINTEGRITY)) 4211 return (0); 4212 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 4213 (nd->nd_flag & ND_GSS)) 4214 return (0); 4215 if (exp->nes_secflavors[i] == AUTH_SYS && 4216 (nd->nd_flag & ND_GSS) == 0) 4217 return (0); 4218 } 4219 if ((nd->nd_flag & ND_NFSV4) != 0) 4220 return (NFSERR_WRONGSEC); 4221 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4222 } 4223 4224 /* 4225 * Calculate a hash value for the fid in a file handle. 4226 */ 4227 uint32_t 4228 nfsrv_hashfh(fhandle_t *fhp) 4229 { 4230 uint32_t hashval; 4231 4232 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 4233 return (hashval); 4234 } 4235 4236 /* 4237 * Calculate a hash value for the sessionid. 4238 */ 4239 uint32_t 4240 nfsrv_hashsessionid(uint8_t *sessionid) 4241 { 4242 uint32_t hashval; 4243 4244 hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); 4245 return (hashval); 4246 } 4247 4248 /* 4249 * Signal the userland master nfsd to backup the stable restart file. 4250 */ 4251 void 4252 nfsrv_backupstable(void) 4253 { 4254 struct proc *procp; 4255 4256 if (NFSD_VNET(nfsd_master_proc) != NULL) { 4257 procp = pfind(nfsd_master_pid); 4258 /* Try to make sure it is the correct process. */ 4259 if (procp == NFSD_VNET(nfsd_master_proc) && 4260 procp->p_stats->p_start.tv_sec == 4261 nfsd_master_start.tv_sec && 4262 procp->p_stats->p_start.tv_usec == 4263 nfsd_master_start.tv_usec && 4264 strcmp(procp->p_comm, nfsd_master_comm) == 0) 4265 kern_psignal(procp, SIGUSR2); 4266 else 4267 NFSD_VNET(nfsd_master_proc) = NULL; 4268 4269 if (procp != NULL) 4270 PROC_UNLOCK(procp); 4271 } 4272 } 4273 4274 /* 4275 * Create a DS data file for nfsrv_pnfscreate(). Called for each mirror. 4276 * The arguments are in a structure, so that they can be passed through 4277 * taskqueue for a kernel process to execute this function. 4278 */ 4279 struct nfsrvdscreate { 4280 int done; 4281 int inprog; 4282 struct task tsk; 4283 struct ucred *tcred; 4284 struct vnode *dvp; 4285 NFSPROC_T *p; 4286 struct pnfsdsfile *pf; 4287 int err; 4288 fhandle_t fh; 4289 struct vattr va; 4290 struct vattr createva; 4291 }; 4292 4293 int 4294 nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap, 4295 fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa, 4296 char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp) 4297 { 4298 struct vnode *nvp; 4299 struct nameidata named; 4300 struct vattr va; 4301 char *bufp; 4302 u_long *hashp; 4303 struct nfsnode *np; 4304 struct nfsmount *nmp; 4305 int error; 4306 4307 NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE, 4308 LOCKPARENT | LOCKLEAF | NOCACHE); 4309 nfsvno_setpathbuf(&named, &bufp, &hashp); 4310 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE; 4311 named.ni_cnd.cn_nameptr = bufp; 4312 if (fnamep != NULL) { 4313 strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1); 4314 named.ni_cnd.cn_namelen = strlen(bufp); 4315 } else 4316 named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp); 4317 NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp); 4318 4319 /* Create the date file in the DS mount. */ 4320 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4321 if (error == 0) { 4322 error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap); 4323 vref(dvp); 4324 VOP_VPUT_PAIR(dvp, error == 0 ? &nvp : NULL, false); 4325 if (error == 0) { 4326 /* Set the ownership of the file. */ 4327 error = VOP_SETATTR(nvp, nvap, tcred); 4328 NFSD_DEBUG(4, "nfsrv_dscreate:" 4329 " setattr-uid=%d\n", error); 4330 if (error != 0) 4331 vput(nvp); 4332 } 4333 if (error != 0) 4334 printf("pNFS: pnfscreate failed=%d\n", error); 4335 } else 4336 printf("pNFS: pnfscreate vnlock=%d\n", error); 4337 if (error == 0) { 4338 np = VTONFS(nvp); 4339 nmp = VFSTONFS(nvp->v_mount); 4340 if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs") 4341 != 0 || nmp->nm_nam->sa_len > sizeof( 4342 struct sockaddr_in6) || 4343 np->n_fhp->nfh_len != NFSX_MYFH) { 4344 printf("Bad DS file: fstype=%s salen=%d" 4345 " fhlen=%d\n", 4346 nvp->v_mount->mnt_vfc->vfc_name, 4347 nmp->nm_nam->sa_len, np->n_fhp->nfh_len); 4348 error = ENOENT; 4349 } 4350 4351 /* Set extattrs for the DS on the MDS file. */ 4352 if (error == 0) { 4353 if (dsa != NULL) { 4354 error = VOP_GETATTR(nvp, &va, tcred); 4355 if (error == 0) { 4356 dsa->dsa_filerev = va.va_filerev; 4357 dsa->dsa_size = va.va_size; 4358 dsa->dsa_atime = va.va_atime; 4359 dsa->dsa_mtime = va.va_mtime; 4360 dsa->dsa_bytes = va.va_bytes; 4361 } 4362 } 4363 if (error == 0) { 4364 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, 4365 NFSX_MYFH); 4366 NFSBCOPY(nmp->nm_nam, &pf->dsf_sin, 4367 nmp->nm_nam->sa_len); 4368 NFSBCOPY(named.ni_cnd.cn_nameptr, 4369 pf->dsf_filename, 4370 sizeof(pf->dsf_filename)); 4371 } 4372 } else 4373 printf("pNFS: pnfscreate can't get DS" 4374 " attr=%d\n", error); 4375 if (nvpp != NULL && error == 0) 4376 *nvpp = nvp; 4377 else 4378 vput(nvp); 4379 } 4380 nfsvno_relpathbuf(&named); 4381 return (error); 4382 } 4383 4384 /* 4385 * Start up the thread that will execute nfsrv_dscreate(). 4386 */ 4387 static void 4388 start_dscreate(void *arg, int pending) 4389 { 4390 struct nfsrvdscreate *dsc; 4391 4392 dsc = (struct nfsrvdscreate *)arg; 4393 dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh, 4394 dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL); 4395 dsc->done = 1; 4396 NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err); 4397 } 4398 4399 /* 4400 * Create a pNFS data file on the Data Server(s). 4401 */ 4402 static void 4403 nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred, 4404 NFSPROC_T *p) 4405 { 4406 struct nfsrvdscreate *dsc, *tdsc = NULL; 4407 struct nfsdevice *ds, *tds, *fds; 4408 struct mount *mp; 4409 struct pnfsdsfile *pf, *tpf; 4410 struct pnfsdsattr dsattr; 4411 struct vattr va; 4412 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4413 struct nfsmount *nmp; 4414 fhandle_t fh; 4415 uid_t vauid; 4416 gid_t vagid; 4417 u_short vamode; 4418 struct ucred *tcred; 4419 int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret; 4420 int failpos, timo; 4421 4422 /* Get a DS server directory in a round-robin order. */ 4423 mirrorcnt = 1; 4424 mp = vp->v_mount; 4425 ds = fds = NULL; 4426 NFSDDSLOCK(); 4427 /* 4428 * Search for the first entry that handles this MDS fs, but use the 4429 * first entry for all MDS fs's otherwise. 4430 */ 4431 TAILQ_FOREACH(tds, &nfsrv_devidhead, nfsdev_list) { 4432 if (tds->nfsdev_nmp != NULL) { 4433 if (tds->nfsdev_mdsisset == 0 && ds == NULL) 4434 ds = tds; 4435 else if (tds->nfsdev_mdsisset != 0 && fsidcmp( 4436 &mp->mnt_stat.f_fsid, &tds->nfsdev_mdsfsid) == 0) { 4437 ds = fds = tds; 4438 break; 4439 } 4440 } 4441 } 4442 if (ds == NULL) { 4443 NFSDDSUNLOCK(); 4444 NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n"); 4445 return; 4446 } 4447 i = dsdir[0] = ds->nfsdev_nextdir; 4448 ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize; 4449 dvp[0] = ds->nfsdev_dsdir[i]; 4450 tds = TAILQ_NEXT(ds, nfsdev_list); 4451 if (nfsrv_maxpnfsmirror > 1 && tds != NULL) { 4452 TAILQ_FOREACH_FROM(tds, &nfsrv_devidhead, nfsdev_list) { 4453 if (tds->nfsdev_nmp != NULL && 4454 ((tds->nfsdev_mdsisset == 0 && fds == NULL) || 4455 (tds->nfsdev_mdsisset != 0 && fds != NULL && 4456 fsidcmp(&mp->mnt_stat.f_fsid, 4457 &tds->nfsdev_mdsfsid) == 0))) { 4458 dsdir[mirrorcnt] = i; 4459 dvp[mirrorcnt] = tds->nfsdev_dsdir[i]; 4460 mirrorcnt++; 4461 if (mirrorcnt >= nfsrv_maxpnfsmirror) 4462 break; 4463 } 4464 } 4465 } 4466 /* Put at end of list to implement round-robin usage. */ 4467 TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list); 4468 TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list); 4469 NFSDDSUNLOCK(); 4470 dsc = NULL; 4471 if (mirrorcnt > 1) 4472 tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP, 4473 M_WAITOK | M_ZERO); 4474 tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK | 4475 M_ZERO); 4476 4477 error = nfsvno_getfh(vp, &fh, p); 4478 if (error == 0) 4479 error = VOP_GETATTR(vp, &va, cred); 4480 if (error == 0) { 4481 /* Set the attributes for "vp" to Setattr the DS vp. */ 4482 vauid = va.va_uid; 4483 vagid = va.va_gid; 4484 vamode = va.va_mode; 4485 VATTR_NULL(&va); 4486 va.va_uid = vauid; 4487 va.va_gid = vagid; 4488 va.va_mode = vamode; 4489 va.va_size = 0; 4490 } else 4491 printf("pNFS: pnfscreate getfh+attr=%d\n", error); 4492 4493 NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid, 4494 cred->cr_gid); 4495 /* Make data file name based on FH. */ 4496 tcred = newnfs_getcred(); 4497 4498 /* 4499 * Create the file on each DS mirror, using kernel process(es) for the 4500 * additional mirrors. 4501 */ 4502 failpos = -1; 4503 for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) { 4504 tpf->dsf_dir = dsdir[i]; 4505 tdsc->tcred = tcred; 4506 tdsc->p = p; 4507 tdsc->pf = tpf; 4508 tdsc->createva = *vap; 4509 NFSBCOPY(&fh, &tdsc->fh, sizeof(fh)); 4510 tdsc->va = va; 4511 tdsc->dvp = dvp[i]; 4512 tdsc->done = 0; 4513 tdsc->inprog = 0; 4514 tdsc->err = 0; 4515 ret = EIO; 4516 if (nfs_pnfsiothreads != 0) { 4517 ret = nfs_pnfsio(start_dscreate, tdsc); 4518 NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret); 4519 } 4520 if (ret != 0) { 4521 ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL, 4522 NULL, tcred, p, NULL); 4523 if (ret != 0) { 4524 KASSERT(error == 0, ("nfsrv_dscreate err=%d", 4525 error)); 4526 if (failpos == -1 && nfsds_failerr(ret)) 4527 failpos = i; 4528 else 4529 error = ret; 4530 } 4531 } 4532 } 4533 if (error == 0) { 4534 tpf->dsf_dir = dsdir[mirrorcnt - 1]; 4535 error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf, 4536 &dsattr, NULL, tcred, p, NULL); 4537 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) { 4538 failpos = mirrorcnt - 1; 4539 error = 0; 4540 } 4541 } 4542 timo = hz / 50; /* Wait for 20msec. */ 4543 if (timo < 1) 4544 timo = 1; 4545 /* Wait for kernel task(s) to complete. */ 4546 for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) { 4547 while (tdsc->inprog != 0 && tdsc->done == 0) 4548 tsleep(&tdsc->tsk, PVFS, "srvdcr", timo); 4549 if (tdsc->err != 0) { 4550 if (failpos == -1 && nfsds_failerr(tdsc->err)) 4551 failpos = i; 4552 else if (error == 0) 4553 error = tdsc->err; 4554 } 4555 } 4556 4557 /* 4558 * If failpos has been set, that mirror has failed, so it needs 4559 * to be disabled. 4560 */ 4561 if (failpos >= 0) { 4562 nmp = VFSTONFS(dvp[failpos]->v_mount); 4563 NFSLOCKMNT(nmp); 4564 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4565 NFSMNTP_CANCELRPCS)) == 0) { 4566 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4567 NFSUNLOCKMNT(nmp); 4568 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4569 NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos, 4570 ds); 4571 if (ds != NULL) 4572 nfsrv_killrpcs(nmp); 4573 NFSLOCKMNT(nmp); 4574 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4575 wakeup(nmp); 4576 } 4577 NFSUNLOCKMNT(nmp); 4578 } 4579 4580 NFSFREECRED(tcred); 4581 if (error == 0) { 4582 ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp"); 4583 4584 NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n", 4585 mirrorcnt, nfsrv_maxpnfsmirror); 4586 /* 4587 * For all mirrors that couldn't be created, fill in the 4588 * *pf structure, but with an IP address == 0.0.0.0. 4589 */ 4590 tpf = pf + mirrorcnt; 4591 for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) { 4592 *tpf = *pf; 4593 tpf->dsf_sin.sin_family = AF_INET; 4594 tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in); 4595 tpf->dsf_sin.sin_addr.s_addr = 0; 4596 tpf->dsf_sin.sin_port = 0; 4597 } 4598 4599 error = vn_extattr_set(vp, IO_NODELOCKED, 4600 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", 4601 sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p); 4602 if (error == 0) 4603 error = vn_extattr_set(vp, IO_NODELOCKED, 4604 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", 4605 sizeof(dsattr), (char *)&dsattr, p); 4606 if (error != 0) 4607 printf("pNFS: pnfscreate setextattr=%d\n", 4608 error); 4609 } else 4610 printf("pNFS: pnfscreate=%d\n", error); 4611 free(pf, M_TEMP); 4612 free(dsc, M_TEMP); 4613 } 4614 4615 /* 4616 * Get the information needed to remove the pNFS Data Server file from the 4617 * Metadata file. Upon success, ddvp is set non-NULL to the locked 4618 * DS directory vnode. The caller must unlock *ddvp when done with it. 4619 */ 4620 static void 4621 nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp, 4622 int *mirrorcntp, char *fname, fhandle_t *fhp) 4623 { 4624 struct vattr va; 4625 struct ucred *tcred; 4626 char *buf; 4627 int buflen, error; 4628 4629 dvpp[0] = NULL; 4630 /* If not an exported regular file or not a pNFS server, just return. */ 4631 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4632 nfsrv_devidcnt == 0) 4633 return; 4634 4635 /* Check to see if this is the last hard link. */ 4636 tcred = newnfs_getcred(); 4637 error = VOP_GETATTR(vp, &va, tcred); 4638 NFSFREECRED(tcred); 4639 if (error != 0) { 4640 printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error); 4641 return; 4642 } 4643 if (va.va_nlink > 1) 4644 return; 4645 4646 error = nfsvno_getfh(vp, fhp, p); 4647 if (error != 0) { 4648 printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error); 4649 return; 4650 } 4651 4652 buflen = 1024; 4653 buf = malloc(buflen, M_TEMP, M_WAITOK); 4654 /* Get the directory vnode for the DS mount and the file handle. */ 4655 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp, 4656 NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL); 4657 free(buf, M_TEMP); 4658 if (error != 0) 4659 printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error); 4660 } 4661 4662 /* 4663 * Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror. 4664 * The arguments are in a structure, so that they can be passed through 4665 * taskqueue for a kernel process to execute this function. 4666 */ 4667 struct nfsrvdsremove { 4668 int done; 4669 int inprog; 4670 struct task tsk; 4671 struct ucred *tcred; 4672 struct vnode *dvp; 4673 NFSPROC_T *p; 4674 int err; 4675 char fname[PNFS_FILENAME_LEN + 1]; 4676 }; 4677 4678 static int 4679 nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred, 4680 NFSPROC_T *p) 4681 { 4682 struct nameidata named; 4683 struct vnode *nvp; 4684 char *bufp; 4685 u_long *hashp; 4686 int error; 4687 4688 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4689 if (error != 0) 4690 return (error); 4691 named.ni_cnd.cn_nameiop = DELETE; 4692 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 4693 named.ni_cnd.cn_cred = tcred; 4694 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 4695 nfsvno_setpathbuf(&named, &bufp, &hashp); 4696 named.ni_cnd.cn_nameptr = bufp; 4697 named.ni_cnd.cn_namelen = strlen(fname); 4698 strlcpy(bufp, fname, NAME_MAX); 4699 NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp); 4700 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 4701 NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error); 4702 if (error == 0) { 4703 error = VOP_REMOVE(dvp, nvp, &named.ni_cnd); 4704 vput(nvp); 4705 } 4706 NFSVOPUNLOCK(dvp); 4707 nfsvno_relpathbuf(&named); 4708 if (error != 0) 4709 printf("pNFS: nfsrv_pnfsremove failed=%d\n", error); 4710 return (error); 4711 } 4712 4713 /* 4714 * Start up the thread that will execute nfsrv_dsremove(). 4715 */ 4716 static void 4717 start_dsremove(void *arg, int pending) 4718 { 4719 struct nfsrvdsremove *dsrm; 4720 4721 dsrm = (struct nfsrvdsremove *)arg; 4722 dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred, 4723 dsrm->p); 4724 dsrm->done = 1; 4725 NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err); 4726 } 4727 4728 /* 4729 * Remove a pNFS data file from a Data Server. 4730 * nfsrv_pnfsremovesetup() must have been called before the MDS file was 4731 * removed to set up the dvp and fill in the FH. 4732 */ 4733 static void 4734 nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp, 4735 NFSPROC_T *p) 4736 { 4737 struct ucred *tcred; 4738 struct nfsrvdsremove *dsrm, *tdsrm; 4739 struct nfsdevice *ds; 4740 struct nfsmount *nmp; 4741 int failpos, i, ret, timo; 4742 4743 tcred = newnfs_getcred(); 4744 dsrm = NULL; 4745 if (mirrorcnt > 1) 4746 dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK); 4747 /* 4748 * Remove the file on each DS mirror, using kernel process(es) for the 4749 * additional mirrors. 4750 */ 4751 failpos = -1; 4752 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4753 tdsrm->tcred = tcred; 4754 tdsrm->p = p; 4755 tdsrm->dvp = dvp[i]; 4756 strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1); 4757 tdsrm->inprog = 0; 4758 tdsrm->done = 0; 4759 tdsrm->err = 0; 4760 ret = EIO; 4761 if (nfs_pnfsiothreads != 0) { 4762 ret = nfs_pnfsio(start_dsremove, tdsrm); 4763 NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret); 4764 } 4765 if (ret != 0) { 4766 ret = nfsrv_dsremove(dvp[i], fname, tcred, p); 4767 if (failpos == -1 && nfsds_failerr(ret)) 4768 failpos = i; 4769 } 4770 } 4771 ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p); 4772 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret)) 4773 failpos = mirrorcnt - 1; 4774 timo = hz / 50; /* Wait for 20msec. */ 4775 if (timo < 1) 4776 timo = 1; 4777 /* Wait for kernel task(s) to complete. */ 4778 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4779 while (tdsrm->inprog != 0 && tdsrm->done == 0) 4780 tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo); 4781 if (failpos == -1 && nfsds_failerr(tdsrm->err)) 4782 failpos = i; 4783 } 4784 4785 /* 4786 * If failpos has been set, that mirror has failed, so it needs 4787 * to be disabled. 4788 */ 4789 if (failpos >= 0) { 4790 nmp = VFSTONFS(dvp[failpos]->v_mount); 4791 NFSLOCKMNT(nmp); 4792 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4793 NFSMNTP_CANCELRPCS)) == 0) { 4794 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4795 NFSUNLOCKMNT(nmp); 4796 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4797 NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos, 4798 ds); 4799 if (ds != NULL) 4800 nfsrv_killrpcs(nmp); 4801 NFSLOCKMNT(nmp); 4802 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4803 wakeup(nmp); 4804 } 4805 NFSUNLOCKMNT(nmp); 4806 } 4807 4808 /* Get rid all layouts for the file. */ 4809 nfsrv_freefilelayouts(fhp); 4810 4811 NFSFREECRED(tcred); 4812 free(dsrm, M_TEMP); 4813 } 4814 4815 /* 4816 * Generate a file name based on the file handle and put it in *bufp. 4817 * Return the number of bytes generated. 4818 */ 4819 static int 4820 nfsrv_putfhname(fhandle_t *fhp, char *bufp) 4821 { 4822 int i; 4823 uint8_t *cp; 4824 const uint8_t *hexdigits = "0123456789abcdef"; 4825 4826 cp = (uint8_t *)fhp; 4827 for (i = 0; i < sizeof(*fhp); i++) { 4828 bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf]; 4829 bufp[2 * i + 1] = hexdigits[*cp++ & 0xf]; 4830 } 4831 bufp[2 * i] = '\0'; 4832 return (2 * i); 4833 } 4834 4835 /* 4836 * Update the Metadata file's attributes from the DS file when a Read/Write 4837 * layout is returned. 4838 * Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN 4839 * so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file. 4840 */ 4841 int 4842 nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 4843 { 4844 struct ucred *tcred; 4845 int error; 4846 4847 /* Do this as root so that it won't fail with EACCES. */ 4848 tcred = newnfs_getcred(); 4849 error = nfsrv_proxyds(vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN, 4850 NULL, NULL, NULL, nap, NULL, NULL, 0, NULL); 4851 NFSFREECRED(tcred); 4852 return (error); 4853 } 4854 4855 /* 4856 * Set the NFSv4 ACL on the DS file to the same ACL as the MDS file. 4857 */ 4858 static int 4859 nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred, 4860 NFSPROC_T *p) 4861 { 4862 int error; 4863 4864 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETACL, 4865 NULL, NULL, NULL, NULL, aclp, NULL, 0, NULL); 4866 return (error); 4867 } 4868 4869 static int 4870 nfsrv_proxyds(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 4871 struct thread *p, int ioproc, struct mbuf **mpp, char *cp, 4872 struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp, 4873 off_t *offp, int content, bool *eofp) 4874 { 4875 struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp; 4876 fhandle_t fh[NFSDEV_MAXMIRRORS]; 4877 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4878 struct nfsdevice *ds; 4879 struct pnfsdsattr dsattr; 4880 struct opnfsdsattr odsattr; 4881 char *buf; 4882 int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt; 4883 4884 NFSD_DEBUG(4, "in nfsrv_proxyds\n"); 4885 /* 4886 * If not a regular file, not exported or not a pNFS server, 4887 * just return ENOENT. 4888 */ 4889 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4890 nfsrv_devidcnt == 0) 4891 return (ENOENT); 4892 4893 buflen = 1024; 4894 buf = malloc(buflen, M_TEMP, M_WAITOK); 4895 error = 0; 4896 4897 /* 4898 * For Getattr, get the Change attribute (va_filerev) and size (va_size) 4899 * from the MetaData file's extended attribute. 4900 */ 4901 if (ioproc == NFSPROC_GETATTR) { 4902 error = vn_extattr_get(vp, IO_NODELOCKED, 4903 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf, 4904 p); 4905 if (error == 0) { 4906 if (buflen == sizeof(odsattr)) { 4907 NFSBCOPY(buf, &odsattr, buflen); 4908 nap->na_filerev = odsattr.dsa_filerev; 4909 nap->na_size = odsattr.dsa_size; 4910 nap->na_atime = odsattr.dsa_atime; 4911 nap->na_mtime = odsattr.dsa_mtime; 4912 /* 4913 * Fake na_bytes by rounding up na_size. 4914 * Since we don't know the block size, just 4915 * use BLKDEV_IOSIZE. 4916 */ 4917 nap->na_bytes = (odsattr.dsa_size + 4918 BLKDEV_IOSIZE - 1) & ~(BLKDEV_IOSIZE - 1); 4919 } else if (buflen == sizeof(dsattr)) { 4920 NFSBCOPY(buf, &dsattr, buflen); 4921 nap->na_filerev = dsattr.dsa_filerev; 4922 nap->na_size = dsattr.dsa_size; 4923 nap->na_atime = dsattr.dsa_atime; 4924 nap->na_mtime = dsattr.dsa_mtime; 4925 nap->na_bytes = dsattr.dsa_bytes; 4926 } else 4927 error = ENXIO; 4928 } 4929 if (error == 0) { 4930 /* 4931 * If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr() 4932 * returns 0, just return now. nfsrv_checkdsattr() 4933 * returns 0 if there is no Read/Write layout 4934 * plus either an Open/Write_access or Write 4935 * delegation issued to a client for the file. 4936 */ 4937 if (nfsrv_pnfsgetdsattr == 0 || 4938 nfsrv_checkdsattr(vp, p) == 0) { 4939 free(buf, M_TEMP); 4940 return (error); 4941 } 4942 } 4943 4944 /* 4945 * Clear ENOATTR so the code below will attempt to do a 4946 * nfsrv_getattrdsrpc() to get the attributes and (re)create 4947 * the extended attribute. 4948 */ 4949 if (error == ENOATTR) 4950 error = 0; 4951 } 4952 4953 origmircnt = -1; 4954 trycnt = 0; 4955 tryagain: 4956 if (error == 0) { 4957 buflen = 1024; 4958 if (ioproc == NFSPROC_READDS && NFSVOPISLOCKED(vp) == 4959 LK_EXCLUSIVE) 4960 printf("nfsrv_proxyds: Readds vp exclusively locked\n"); 4961 error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen, 4962 &mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL, 4963 NULL, NULL); 4964 if (error == 0) { 4965 for (i = 0; i < mirrorcnt; i++) 4966 nmp[i] = VFSTONFS(dvp[i]->v_mount); 4967 } else 4968 printf("pNFS: proxy getextattr sockaddr=%d\n", error); 4969 } else 4970 printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error); 4971 if (error == 0) { 4972 failpos = -1; 4973 if (origmircnt == -1) 4974 origmircnt = mirrorcnt; 4975 /* 4976 * If failpos is set to a mirror#, then that mirror has 4977 * failed and will be disabled. For Read, Getattr and Seek, the 4978 * function only tries one mirror, so if that mirror has 4979 * failed, it will need to be retried. As such, increment 4980 * tryitagain for these cases. 4981 * For Write, Setattr and Setacl, the function tries all 4982 * mirrors and will not return an error for the case where 4983 * one mirror has failed. For these cases, the functioning 4984 * mirror(s) will have been modified, so a retry isn't 4985 * necessary. These functions will set failpos for the 4986 * failed mirror#. 4987 */ 4988 if (ioproc == NFSPROC_READDS) { 4989 error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0], 4990 mpp, mpp2); 4991 if (nfsds_failerr(error) && mirrorcnt > 1) { 4992 /* 4993 * Setting failpos will cause the mirror 4994 * to be disabled and then a retry of this 4995 * read is required. 4996 */ 4997 failpos = 0; 4998 error = 0; 4999 trycnt++; 5000 } 5001 } else if (ioproc == NFSPROC_WRITEDS) 5002 error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp, 5003 &nmp[0], mirrorcnt, mpp, cp, &failpos); 5004 else if (ioproc == NFSPROC_SETATTR) 5005 error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0], 5006 mirrorcnt, nap, &failpos); 5007 else if (ioproc == NFSPROC_SETACL) 5008 error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0], 5009 mirrorcnt, aclp, &failpos); 5010 else if (ioproc == NFSPROC_SEEKDS) { 5011 error = nfsrv_seekdsrpc(fh, offp, content, eofp, cred, 5012 p, nmp[0]); 5013 if (nfsds_failerr(error) && mirrorcnt > 1) { 5014 /* 5015 * Setting failpos will cause the mirror 5016 * to be disabled and then a retry of this 5017 * read is required. 5018 */ 5019 failpos = 0; 5020 error = 0; 5021 trycnt++; 5022 } 5023 } else if (ioproc == NFSPROC_ALLOCATE) 5024 error = nfsrv_allocatedsrpc(fh, off, *offp, cred, p, vp, 5025 &nmp[0], mirrorcnt, &failpos); 5026 else if (ioproc == NFSPROC_DEALLOCATE) 5027 error = nfsrv_deallocatedsrpc(fh, off, *offp, cred, p, 5028 vp, &nmp[0], mirrorcnt, &failpos); 5029 else { 5030 error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p, 5031 vp, nmp[mirrorcnt - 1], nap); 5032 if (nfsds_failerr(error) && mirrorcnt > 1) { 5033 /* 5034 * Setting failpos will cause the mirror 5035 * to be disabled and then a retry of this 5036 * getattr is required. 5037 */ 5038 failpos = mirrorcnt - 1; 5039 error = 0; 5040 trycnt++; 5041 } 5042 } 5043 ds = NULL; 5044 if (failpos >= 0) { 5045 failnmp = nmp[failpos]; 5046 NFSLOCKMNT(failnmp); 5047 if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM | 5048 NFSMNTP_CANCELRPCS)) == 0) { 5049 failnmp->nm_privflag |= NFSMNTP_CANCELRPCS; 5050 NFSUNLOCKMNT(failnmp); 5051 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, 5052 failnmp, p); 5053 NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n", 5054 failpos, ds); 5055 if (ds != NULL) 5056 nfsrv_killrpcs(failnmp); 5057 NFSLOCKMNT(failnmp); 5058 failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 5059 wakeup(failnmp); 5060 } 5061 NFSUNLOCKMNT(failnmp); 5062 } 5063 for (i = 0; i < mirrorcnt; i++) 5064 NFSVOPUNLOCK(dvp[i]); 5065 NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error, 5066 trycnt); 5067 /* Try the Read/Getattr again if a mirror was deleted. */ 5068 if (ds != NULL && trycnt > 0 && trycnt < origmircnt) 5069 goto tryagain; 5070 } else { 5071 /* Return ENOENT for any Extended Attribute error. */ 5072 error = ENOENT; 5073 } 5074 free(buf, M_TEMP); 5075 NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error); 5076 return (error); 5077 } 5078 5079 /* 5080 * Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended 5081 * attribute. 5082 * newnmpp - If it points to a non-NULL nmp, that is the destination and needs 5083 * to be checked. If it points to a NULL nmp, then it returns 5084 * a suitable destination. 5085 * curnmp - If non-NULL, it is the source mount for the copy. 5086 */ 5087 int 5088 nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp, 5089 int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp, 5090 char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp, 5091 struct nfsmount *curnmp, int *ippos, int *dsdirp) 5092 { 5093 struct vnode *dvp, *nvp = NULL, **tdvpp; 5094 struct mount *mp; 5095 struct nfsmount *nmp, *newnmp; 5096 struct sockaddr *sad; 5097 struct sockaddr_in *sin; 5098 struct nfsdevice *ds, *tds, *fndds; 5099 struct pnfsdsfile *pf; 5100 uint32_t dsdir; 5101 int error, fhiszero, fnd, gotone, i, mirrorcnt; 5102 5103 ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp"); 5104 *mirrorcntp = 1; 5105 tdvpp = dvpp; 5106 if (nvpp != NULL) 5107 *nvpp = NULL; 5108 if (dvpp != NULL) 5109 *dvpp = NULL; 5110 if (ippos != NULL) 5111 *ippos = -1; 5112 if (newnmpp != NULL) 5113 newnmp = *newnmpp; 5114 else 5115 newnmp = NULL; 5116 mp = vp->v_mount; 5117 error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5118 "pnfsd.dsfile", buflenp, buf, p); 5119 mirrorcnt = *buflenp / sizeof(*pf); 5120 if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS || 5121 *buflenp != sizeof(*pf) * mirrorcnt)) 5122 error = ENOATTR; 5123 5124 pf = (struct pnfsdsfile *)buf; 5125 /* If curnmp != NULL, check for a match in the mirror list. */ 5126 if (curnmp != NULL && error == 0) { 5127 fnd = 0; 5128 for (i = 0; i < mirrorcnt; i++, pf++) { 5129 sad = (struct sockaddr *)&pf->dsf_sin; 5130 if (nfsaddr2_match(sad, curnmp->nm_nam)) { 5131 if (ippos != NULL) 5132 *ippos = i; 5133 fnd = 1; 5134 break; 5135 } 5136 } 5137 if (fnd == 0) 5138 error = ENXIO; 5139 } 5140 5141 gotone = 0; 5142 pf = (struct pnfsdsfile *)buf; 5143 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt, 5144 error); 5145 for (i = 0; i < mirrorcnt && error == 0; i++, pf++) { 5146 fhiszero = 0; 5147 sad = (struct sockaddr *)&pf->dsf_sin; 5148 sin = &pf->dsf_sin; 5149 dsdir = pf->dsf_dir; 5150 if (dsdir >= nfsrv_dsdirsize) { 5151 printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir); 5152 error = ENOATTR; 5153 } else if (nvpp != NULL && newnmp != NULL && 5154 nfsaddr2_match(sad, newnmp->nm_nam)) 5155 error = EEXIST; 5156 if (error == 0) { 5157 if (ippos != NULL && curnmp == NULL && 5158 sad->sa_family == AF_INET && 5159 sin->sin_addr.s_addr == 0) 5160 *ippos = i; 5161 if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0) 5162 fhiszero = 1; 5163 /* Use the socket address to find the mount point. */ 5164 fndds = NULL; 5165 NFSDDSLOCK(); 5166 /* Find a match for the IP address. */ 5167 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 5168 if (ds->nfsdev_nmp != NULL) { 5169 dvp = ds->nfsdev_dvp; 5170 nmp = VFSTONFS(dvp->v_mount); 5171 if (nmp != ds->nfsdev_nmp) 5172 printf("different2 nmp %p %p\n", 5173 nmp, ds->nfsdev_nmp); 5174 if (nfsaddr2_match(sad, nmp->nm_nam)) { 5175 fndds = ds; 5176 break; 5177 } 5178 } 5179 } 5180 if (fndds != NULL && newnmpp != NULL && 5181 newnmp == NULL) { 5182 /* Search for a place to make a mirror copy. */ 5183 TAILQ_FOREACH(tds, &nfsrv_devidhead, 5184 nfsdev_list) { 5185 if (tds->nfsdev_nmp != NULL && 5186 fndds != tds && 5187 ((tds->nfsdev_mdsisset == 0 && 5188 fndds->nfsdev_mdsisset == 0) || 5189 (tds->nfsdev_mdsisset != 0 && 5190 fndds->nfsdev_mdsisset != 0 && 5191 fsidcmp(&tds->nfsdev_mdsfsid, 5192 &mp->mnt_stat.f_fsid) == 0))) { 5193 *newnmpp = tds->nfsdev_nmp; 5194 break; 5195 } 5196 } 5197 if (tds != NULL) { 5198 /* 5199 * Move this entry to the end of the 5200 * list, so it won't be selected as 5201 * easily the next time. 5202 */ 5203 TAILQ_REMOVE(&nfsrv_devidhead, tds, 5204 nfsdev_list); 5205 TAILQ_INSERT_TAIL(&nfsrv_devidhead, tds, 5206 nfsdev_list); 5207 } 5208 } 5209 NFSDDSUNLOCK(); 5210 if (fndds != NULL) { 5211 dvp = fndds->nfsdev_dsdir[dsdir]; 5212 if (lktype != 0 || fhiszero != 0 || 5213 (nvpp != NULL && *nvpp == NULL)) { 5214 if (fhiszero != 0) 5215 error = vn_lock(dvp, 5216 LK_EXCLUSIVE); 5217 else if (lktype != 0) 5218 error = vn_lock(dvp, lktype); 5219 else 5220 error = vn_lock(dvp, LK_SHARED); 5221 /* 5222 * If the file handle is all 0's, try to 5223 * do a Lookup against the DS to acquire 5224 * it. 5225 * If dvpp == NULL or the Lookup fails, 5226 * unlock dvp after the call. 5227 */ 5228 if (error == 0 && (fhiszero != 0 || 5229 (nvpp != NULL && *nvpp == NULL))) { 5230 error = nfsrv_pnfslookupds(vp, 5231 dvp, pf, &nvp, p); 5232 if (error == 0) { 5233 if (fhiszero != 0) 5234 nfsrv_pnfssetfh( 5235 vp, pf, 5236 devid, 5237 fnamep, 5238 nvp, p); 5239 if (nvpp != NULL && 5240 *nvpp == NULL) { 5241 *nvpp = nvp; 5242 *dsdirp = dsdir; 5243 } else 5244 vput(nvp); 5245 } 5246 if (error != 0 || lktype == 0) 5247 NFSVOPUNLOCK(dvp); 5248 } 5249 } 5250 if (error == 0) { 5251 gotone++; 5252 NFSD_DEBUG(4, "gotone=%d\n", gotone); 5253 if (devid != NULL) { 5254 NFSBCOPY(fndds->nfsdev_deviceid, 5255 devid, NFSX_V4DEVICEID); 5256 devid += NFSX_V4DEVICEID; 5257 } 5258 if (dvpp != NULL) 5259 *tdvpp++ = dvp; 5260 if (fhp != NULL) 5261 NFSBCOPY(&pf->dsf_fh, fhp++, 5262 NFSX_MYFH); 5263 if (fnamep != NULL && gotone == 1) 5264 strlcpy(fnamep, 5265 pf->dsf_filename, 5266 sizeof(pf->dsf_filename)); 5267 } else 5268 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt " 5269 "err=%d\n", error); 5270 } 5271 } 5272 } 5273 if (error == 0 && gotone == 0) 5274 error = ENOENT; 5275 5276 NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone, 5277 error); 5278 if (error == 0) 5279 *mirrorcntp = gotone; 5280 else { 5281 if (gotone > 0 && dvpp != NULL) { 5282 /* 5283 * If the error didn't occur on the first one and 5284 * dvpp != NULL, the one(s) prior to the failure will 5285 * have locked dvp's that need to be unlocked. 5286 */ 5287 for (i = 0; i < gotone; i++) { 5288 NFSVOPUNLOCK(*dvpp); 5289 *dvpp++ = NULL; 5290 } 5291 } 5292 /* 5293 * If it found the vnode to be copied from before a failure, 5294 * it needs to be vput()'d. 5295 */ 5296 if (nvpp != NULL && *nvpp != NULL) { 5297 vput(*nvpp); 5298 *nvpp = NULL; 5299 } 5300 } 5301 return (error); 5302 } 5303 5304 /* 5305 * Set the extended attribute for the Change attribute. 5306 */ 5307 static int 5308 nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 5309 { 5310 struct pnfsdsattr dsattr; 5311 int error; 5312 5313 ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp"); 5314 dsattr.dsa_filerev = nap->na_filerev; 5315 dsattr.dsa_size = nap->na_size; 5316 dsattr.dsa_atime = nap->na_atime; 5317 dsattr.dsa_mtime = nap->na_mtime; 5318 dsattr.dsa_bytes = nap->na_bytes; 5319 error = vn_extattr_set(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5320 "pnfsd.dsattr", sizeof(dsattr), (char *)&dsattr, p); 5321 if (error != 0) 5322 printf("pNFS: setextattr=%d\n", error); 5323 return (error); 5324 } 5325 5326 static int 5327 nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5328 NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp) 5329 { 5330 uint32_t *tl; 5331 struct nfsrv_descript *nd; 5332 nfsv4stateid_t st; 5333 struct mbuf *m, *m2; 5334 int error = 0, retlen, tlen, trimlen; 5335 5336 NFSD_DEBUG(4, "in nfsrv_readdsrpc\n"); 5337 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5338 *mpp = NULL; 5339 /* 5340 * Use a stateid where other is an alternating 01010 pattern and 5341 * seqid is 0xffffffff. This value is not defined as special by 5342 * the RFC and is used by the FreeBSD NFS server to indicate an 5343 * MDS->DS proxy operation. 5344 */ 5345 st.other[0] = 0x55555555; 5346 st.other[1] = 0x55555555; 5347 st.other[2] = 0x55555555; 5348 st.seqid = 0xffffffff; 5349 nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5350 NULL, NULL, 0, 0, cred); 5351 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5352 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5353 txdr_hyper(off, tl); 5354 *(tl + 2) = txdr_unsigned(len); 5355 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5356 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5357 if (error != 0) { 5358 free(nd, M_TEMP); 5359 return (error); 5360 } 5361 if (nd->nd_repstat == 0) { 5362 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 5363 NFSM_STRSIZ(retlen, len); 5364 if (retlen > 0) { 5365 /* Trim off the pre-data XDR from the mbuf chain. */ 5366 m = nd->nd_mrep; 5367 while (m != NULL && m != nd->nd_md) { 5368 if (m->m_next == nd->nd_md) { 5369 m->m_next = NULL; 5370 m_freem(nd->nd_mrep); 5371 nd->nd_mrep = m = nd->nd_md; 5372 } else 5373 m = m->m_next; 5374 } 5375 if (m == NULL) { 5376 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5377 error = ENOENT; 5378 goto nfsmout; 5379 } 5380 5381 /* 5382 * Now, adjust first mbuf so that any XDR before the 5383 * read data is skipped over. 5384 */ 5385 trimlen = nd->nd_dpos - mtod(m, char *); 5386 if (trimlen > 0) { 5387 m->m_len -= trimlen; 5388 NFSM_DATAP(m, trimlen); 5389 } 5390 5391 /* 5392 * Truncate the mbuf chain at retlen bytes of data, 5393 * plus XDR padding that brings the length up to a 5394 * multiple of 4. 5395 */ 5396 tlen = NFSM_RNDUP(retlen); 5397 do { 5398 if (m->m_len >= tlen) { 5399 m->m_len = tlen; 5400 tlen = 0; 5401 m2 = m->m_next; 5402 m->m_next = NULL; 5403 m_freem(m2); 5404 break; 5405 } 5406 tlen -= m->m_len; 5407 m = m->m_next; 5408 } while (m != NULL); 5409 if (tlen > 0) { 5410 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5411 error = ENOENT; 5412 goto nfsmout; 5413 } 5414 *mpp = nd->nd_mrep; 5415 *mpendp = m; 5416 nd->nd_mrep = NULL; 5417 } 5418 } else 5419 error = nd->nd_repstat; 5420 nfsmout: 5421 /* If nd->nd_mrep is already NULL, this is a no-op. */ 5422 m_freem(nd->nd_mrep); 5423 free(nd, M_TEMP); 5424 NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error); 5425 return (error); 5426 } 5427 5428 /* 5429 * Do a write RPC on a DS data file, using this structure for the arguments, 5430 * so that this function can be executed by a separate kernel process. 5431 */ 5432 struct nfsrvwritedsdorpc { 5433 int done; 5434 int inprog; 5435 struct task tsk; 5436 fhandle_t fh; 5437 off_t off; 5438 int len; 5439 struct nfsmount *nmp; 5440 struct ucred *cred; 5441 NFSPROC_T *p; 5442 struct mbuf *m; 5443 int err; 5444 }; 5445 5446 static int 5447 nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len, 5448 struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p) 5449 { 5450 uint32_t *tl; 5451 struct nfsrv_descript *nd; 5452 nfsattrbit_t attrbits; 5453 nfsv4stateid_t st; 5454 int commit, error, retlen; 5455 5456 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5457 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp, 5458 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5459 5460 /* 5461 * Use a stateid where other is an alternating 01010 pattern and 5462 * seqid is 0xffffffff. This value is not defined as special by 5463 * the RFC and is used by the FreeBSD NFS server to indicate an 5464 * MDS->DS proxy operation. 5465 */ 5466 st.other[0] = 0x55555555; 5467 st.other[1] = 0x55555555; 5468 st.other[2] = 0x55555555; 5469 st.seqid = 0xffffffff; 5470 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5471 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5472 txdr_hyper(off, tl); 5473 tl += 2; 5474 /* 5475 * Do all writes FileSync, since the server doesn't hold onto dirty 5476 * buffers. Since clients should be accessing the DS servers directly 5477 * using the pNFS layouts, this just needs to work correctly as a 5478 * fallback. 5479 */ 5480 *tl++ = txdr_unsigned(NFSWRITE_FILESYNC); 5481 *tl = txdr_unsigned(len); 5482 NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len); 5483 5484 /* Put data in mbuf chain. */ 5485 nd->nd_mb->m_next = m; 5486 5487 /* Set nd_mb and nd_bpos to end of data. */ 5488 while (m->m_next != NULL) 5489 m = m->m_next; 5490 nd->nd_mb = m; 5491 nfsm_set(nd, m->m_len); 5492 NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len); 5493 5494 /* Do a Getattr for the attributes that change upon writing. */ 5495 NFSZERO_ATTRBIT(&attrbits); 5496 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5497 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5498 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5499 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5500 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5501 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 5502 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5503 (void) nfsrv_putattrbit(nd, &attrbits); 5504 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5505 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5506 if (error != 0) { 5507 free(nd, M_TEMP); 5508 return (error); 5509 } 5510 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat); 5511 /* Get rid of weak cache consistency data for now. */ 5512 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5513 (ND_NFSV4 | ND_V4WCCATTR)) { 5514 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5515 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5516 NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error); 5517 if (error != 0) 5518 goto nfsmout; 5519 /* 5520 * Get rid of Op# and status for next op. 5521 */ 5522 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5523 if (*++tl != 0) 5524 nd->nd_flag |= ND_NOMOREDATA; 5525 } 5526 if (nd->nd_repstat == 0) { 5527 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5528 retlen = fxdr_unsigned(int, *tl++); 5529 commit = fxdr_unsigned(int, *tl); 5530 if (commit != NFSWRITE_FILESYNC) 5531 error = NFSERR_IO; 5532 NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n", 5533 retlen, commit, error); 5534 } else 5535 error = nd->nd_repstat; 5536 /* We have no use for the Write Verifier since we use FileSync. */ 5537 5538 /* 5539 * Get the Change, Size, Access Time and Modify Time attributes and set 5540 * on the Metadata file, so its attributes will be what the file's 5541 * would be if it had been written. 5542 */ 5543 if (error == 0) { 5544 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5545 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5546 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5547 } 5548 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error); 5549 nfsmout: 5550 m_freem(nd->nd_mrep); 5551 free(nd, M_TEMP); 5552 NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error); 5553 return (error); 5554 } 5555 5556 /* 5557 * Start up the thread that will execute nfsrv_writedsdorpc(). 5558 */ 5559 static void 5560 start_writedsdorpc(void *arg, int pending) 5561 { 5562 struct nfsrvwritedsdorpc *drpc; 5563 5564 drpc = (struct nfsrvwritedsdorpc *)arg; 5565 drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5566 drpc->len, NULL, drpc->m, drpc->cred, drpc->p); 5567 drpc->done = 1; 5568 NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err); 5569 } 5570 5571 static int 5572 nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5573 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5574 struct mbuf **mpp, char *cp, int *failposp) 5575 { 5576 struct nfsrvwritedsdorpc *drpc, *tdrpc = NULL; 5577 struct nfsvattr na; 5578 struct mbuf *m; 5579 int error, i, offs, ret, timo; 5580 5581 NFSD_DEBUG(4, "in nfsrv_writedsrpc\n"); 5582 KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain")); 5583 drpc = NULL; 5584 if (mirrorcnt > 1) 5585 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5586 M_WAITOK); 5587 5588 /* Calculate offset in mbuf chain that data starts. */ 5589 offs = cp - mtod(*mpp, char *); 5590 NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len); 5591 5592 /* 5593 * Do the write RPC for every DS, using a separate kernel process 5594 * for every DS except the last one. 5595 */ 5596 error = 0; 5597 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5598 tdrpc->done = 0; 5599 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5600 tdrpc->off = off; 5601 tdrpc->len = len; 5602 tdrpc->nmp = *nmpp; 5603 tdrpc->cred = cred; 5604 tdrpc->p = p; 5605 tdrpc->inprog = 0; 5606 tdrpc->err = 0; 5607 tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5608 ret = EIO; 5609 if (nfs_pnfsiothreads != 0) { 5610 ret = nfs_pnfsio(start_writedsdorpc, tdrpc); 5611 NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n", 5612 ret); 5613 } 5614 if (ret != 0) { 5615 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL, 5616 tdrpc->m, cred, p); 5617 if (nfsds_failerr(ret) && *failposp == -1) 5618 *failposp = i; 5619 else if (error == 0 && ret != 0) 5620 error = ret; 5621 } 5622 nmpp++; 5623 fhp++; 5624 } 5625 m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5626 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p); 5627 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5628 *failposp = mirrorcnt - 1; 5629 else if (error == 0 && ret != 0) 5630 error = ret; 5631 if (error == 0) 5632 error = nfsrv_setextattr(vp, &na, p); 5633 NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error); 5634 tdrpc = drpc; 5635 timo = hz / 50; /* Wait for 20msec. */ 5636 if (timo < 1) 5637 timo = 1; 5638 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5639 /* Wait for RPCs on separate threads to complete. */ 5640 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5641 tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo); 5642 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5643 *failposp = i; 5644 else if (error == 0 && tdrpc->err != 0) 5645 error = tdrpc->err; 5646 } 5647 free(drpc, M_TEMP); 5648 return (error); 5649 } 5650 5651 /* 5652 * Do a allocate RPC on a DS data file, using this structure for the arguments, 5653 * so that this function can be executed by a separate kernel process. 5654 */ 5655 struct nfsrvallocatedsdorpc { 5656 int done; 5657 int inprog; 5658 struct task tsk; 5659 fhandle_t fh; 5660 off_t off; 5661 off_t len; 5662 struct nfsmount *nmp; 5663 struct ucred *cred; 5664 NFSPROC_T *p; 5665 int err; 5666 }; 5667 5668 static int 5669 nfsrv_allocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5670 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5671 { 5672 uint32_t *tl; 5673 struct nfsrv_descript *nd; 5674 nfsattrbit_t attrbits; 5675 nfsv4stateid_t st; 5676 int error; 5677 5678 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5679 nfscl_reqstart(nd, NFSPROC_ALLOCATE, nmp, (u_int8_t *)fhp, 5680 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5681 5682 /* 5683 * Use a stateid where other is an alternating 01010 pattern and 5684 * seqid is 0xffffffff. This value is not defined as special by 5685 * the RFC and is used by the FreeBSD NFS server to indicate an 5686 * MDS->DS proxy operation. 5687 */ 5688 st.other[0] = 0x55555555; 5689 st.other[1] = 0x55555555; 5690 st.other[2] = 0x55555555; 5691 st.seqid = 0xffffffff; 5692 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5693 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5694 txdr_hyper(off, tl); tl += 2; 5695 txdr_hyper(len, tl); tl += 2; 5696 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: len=%jd\n", (intmax_t)len); 5697 5698 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5699 NFSGETATTR_ATTRBIT(&attrbits); 5700 nfsrv_putattrbit(nd, &attrbits); 5701 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5702 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5703 if (error != 0) { 5704 free(nd, M_TEMP); 5705 return (error); 5706 } 5707 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft allocaterpc=%d\n", 5708 nd->nd_repstat); 5709 if (nd->nd_repstat == 0) { 5710 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5711 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5712 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5713 } else 5714 error = nd->nd_repstat; 5715 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft loadattr=%d\n", error); 5716 nfsmout: 5717 m_freem(nd->nd_mrep); 5718 free(nd, M_TEMP); 5719 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc error=%d\n", error); 5720 return (error); 5721 } 5722 5723 /* 5724 * Start up the thread that will execute nfsrv_allocatedsdorpc(). 5725 */ 5726 static void 5727 start_allocatedsdorpc(void *arg, int pending) 5728 { 5729 struct nfsrvallocatedsdorpc *drpc; 5730 5731 drpc = (struct nfsrvallocatedsdorpc *)arg; 5732 drpc->err = nfsrv_allocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5733 drpc->len, NULL, drpc->cred, drpc->p); 5734 drpc->done = 1; 5735 NFSD_DEBUG(4, "start_allocatedsdorpc: err=%d\n", drpc->err); 5736 } 5737 5738 static int 5739 nfsrv_allocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5740 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5741 int *failposp) 5742 { 5743 struct nfsrvallocatedsdorpc *drpc, *tdrpc = NULL; 5744 struct nfsvattr na; 5745 int error, i, ret, timo; 5746 5747 NFSD_DEBUG(4, "in nfsrv_allocatedsrpc\n"); 5748 drpc = NULL; 5749 if (mirrorcnt > 1) 5750 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5751 M_WAITOK); 5752 5753 /* 5754 * Do the allocate RPC for every DS, using a separate kernel process 5755 * for every DS except the last one. 5756 */ 5757 error = 0; 5758 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5759 tdrpc->done = 0; 5760 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5761 tdrpc->off = off; 5762 tdrpc->len = len; 5763 tdrpc->nmp = *nmpp; 5764 tdrpc->cred = cred; 5765 tdrpc->p = p; 5766 tdrpc->inprog = 0; 5767 tdrpc->err = 0; 5768 ret = EIO; 5769 if (nfs_pnfsiothreads != 0) { 5770 ret = nfs_pnfsio(start_allocatedsdorpc, tdrpc); 5771 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: nfs_pnfsio=%d\n", 5772 ret); 5773 } 5774 if (ret != 0) { 5775 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, NULL, 5776 cred, p); 5777 if (nfsds_failerr(ret) && *failposp == -1) 5778 *failposp = i; 5779 else if (error == 0 && ret != 0) 5780 error = ret; 5781 } 5782 nmpp++; 5783 fhp++; 5784 } 5785 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5786 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5787 *failposp = mirrorcnt - 1; 5788 else if (error == 0 && ret != 0) 5789 error = ret; 5790 if (error == 0) 5791 error = nfsrv_setextattr(vp, &na, p); 5792 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: aft setextat=%d\n", error); 5793 tdrpc = drpc; 5794 timo = hz / 50; /* Wait for 20msec. */ 5795 if (timo < 1) 5796 timo = 1; 5797 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5798 /* Wait for RPCs on separate threads to complete. */ 5799 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5800 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5801 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5802 *failposp = i; 5803 else if (error == 0 && tdrpc->err != 0) 5804 error = tdrpc->err; 5805 } 5806 free(drpc, M_TEMP); 5807 return (error); 5808 } 5809 5810 /* 5811 * Do a deallocate RPC on a DS data file, using this structure for the 5812 * arguments, so that this function can be executed by a separate kernel 5813 * process. 5814 */ 5815 struct nfsrvdeallocatedsdorpc { 5816 int done; 5817 int inprog; 5818 struct task tsk; 5819 fhandle_t fh; 5820 off_t off; 5821 off_t len; 5822 struct nfsmount *nmp; 5823 struct ucred *cred; 5824 NFSPROC_T *p; 5825 int err; 5826 }; 5827 5828 static int 5829 nfsrv_deallocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5830 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5831 { 5832 uint32_t *tl; 5833 struct nfsrv_descript *nd; 5834 nfsattrbit_t attrbits; 5835 nfsv4stateid_t st; 5836 int error; 5837 5838 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5839 nfscl_reqstart(nd, NFSPROC_DEALLOCATE, nmp, (u_int8_t *)fhp, 5840 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5841 5842 /* 5843 * Use a stateid where other is an alternating 01010 pattern and 5844 * seqid is 0xffffffff. This value is not defined as special by 5845 * the RFC and is used by the FreeBSD NFS server to indicate an 5846 * MDS->DS proxy operation. 5847 */ 5848 st.other[0] = 0x55555555; 5849 st.other[1] = 0x55555555; 5850 st.other[2] = 0x55555555; 5851 st.seqid = 0xffffffff; 5852 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5853 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5854 txdr_hyper(off, tl); tl += 2; 5855 txdr_hyper(len, tl); tl += 2; 5856 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: len=%jd\n", (intmax_t)len); 5857 5858 /* Do a Getattr for the attributes that change upon writing. */ 5859 NFSZERO_ATTRBIT(&attrbits); 5860 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5861 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5862 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5863 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5864 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5865 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5866 nfsrv_putattrbit(nd, &attrbits); 5867 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5868 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5869 if (error != 0) { 5870 free(nd, M_TEMP); 5871 return (error); 5872 } 5873 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft deallocaterpc=%d\n", 5874 nd->nd_repstat); 5875 /* Get rid of weak cache consistency data for now. */ 5876 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5877 (ND_NFSV4 | ND_V4WCCATTR)) { 5878 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5879 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5880 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: wcc attr=%d\n", error); 5881 if (error != 0) 5882 goto nfsmout; 5883 /* 5884 * Get rid of Op# and status for next op. 5885 */ 5886 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5887 if (*++tl != 0) 5888 nd->nd_flag |= ND_NOMOREDATA; 5889 } 5890 if (nd->nd_repstat == 0) { 5891 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5892 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5893 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5894 } else 5895 error = nd->nd_repstat; 5896 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft loadattr=%d\n", error); 5897 nfsmout: 5898 m_freem(nd->nd_mrep); 5899 free(nd, M_TEMP); 5900 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc error=%d\n", error); 5901 return (error); 5902 } 5903 5904 /* 5905 * Start up the thread that will execute nfsrv_deallocatedsdorpc(). 5906 */ 5907 static void 5908 start_deallocatedsdorpc(void *arg, int pending) 5909 { 5910 struct nfsrvdeallocatedsdorpc *drpc; 5911 5912 drpc = (struct nfsrvdeallocatedsdorpc *)arg; 5913 drpc->err = nfsrv_deallocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5914 drpc->len, NULL, drpc->cred, drpc->p); 5915 drpc->done = 1; 5916 NFSD_DEBUG(4, "start_deallocatedsdorpc: err=%d\n", drpc->err); 5917 } 5918 5919 static int 5920 nfsrv_deallocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5921 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5922 int *failposp) 5923 { 5924 struct nfsrvdeallocatedsdorpc *drpc, *tdrpc = NULL; 5925 struct nfsvattr na; 5926 int error, i, ret, timo; 5927 5928 NFSD_DEBUG(4, "in nfsrv_deallocatedsrpc\n"); 5929 drpc = NULL; 5930 if (mirrorcnt > 1) 5931 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5932 M_WAITOK); 5933 5934 /* 5935 * Do the deallocate RPC for every DS, using a separate kernel process 5936 * for every DS except the last one. 5937 */ 5938 error = 0; 5939 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5940 tdrpc->done = 0; 5941 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5942 tdrpc->off = off; 5943 tdrpc->len = len; 5944 tdrpc->nmp = *nmpp; 5945 tdrpc->cred = cred; 5946 tdrpc->p = p; 5947 tdrpc->inprog = 0; 5948 tdrpc->err = 0; 5949 ret = EIO; 5950 if (nfs_pnfsiothreads != 0) { 5951 ret = nfs_pnfsio(start_deallocatedsdorpc, tdrpc); 5952 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: nfs_pnfsio=%d\n", 5953 ret); 5954 } 5955 if (ret != 0) { 5956 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, 5957 NULL, cred, p); 5958 if (nfsds_failerr(ret) && *failposp == -1) 5959 *failposp = i; 5960 else if (error == 0 && ret != 0) 5961 error = ret; 5962 } 5963 nmpp++; 5964 fhp++; 5965 } 5966 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5967 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5968 *failposp = mirrorcnt - 1; 5969 else if (error == 0 && ret != 0) 5970 error = ret; 5971 if (error == 0) 5972 error = nfsrv_setextattr(vp, &na, p); 5973 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: aft setextat=%d\n", error); 5974 tdrpc = drpc; 5975 timo = hz / 50; /* Wait for 20msec. */ 5976 if (timo < 1) 5977 timo = 1; 5978 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5979 /* Wait for RPCs on separate threads to complete. */ 5980 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5981 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5982 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5983 *failposp = i; 5984 else if (error == 0 && tdrpc->err != 0) 5985 error = tdrpc->err; 5986 } 5987 free(drpc, M_TEMP); 5988 return (error); 5989 } 5990 5991 static int 5992 nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 5993 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap, 5994 struct nfsvattr *dsnap) 5995 { 5996 uint32_t *tl; 5997 struct nfsrv_descript *nd; 5998 nfsv4stateid_t st; 5999 nfsattrbit_t attrbits; 6000 int error; 6001 6002 NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n"); 6003 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6004 /* 6005 * Use a stateid where other is an alternating 01010 pattern and 6006 * seqid is 0xffffffff. This value is not defined as special by 6007 * the RFC and is used by the FreeBSD NFS server to indicate an 6008 * MDS->DS proxy operation. 6009 */ 6010 st.other[0] = 0x55555555; 6011 st.other[1] = 0x55555555; 6012 st.other[2] = 0x55555555; 6013 st.seqid = 0xffffffff; 6014 nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6015 NULL, NULL, 0, 0, cred); 6016 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6017 nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0); 6018 6019 /* Do a Getattr for the attributes that change due to writing. */ 6020 NFSZERO_ATTRBIT(&attrbits); 6021 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6022 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6023 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6024 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6025 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6026 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 6027 *tl = txdr_unsigned(NFSV4OP_GETATTR); 6028 (void) nfsrv_putattrbit(nd, &attrbits); 6029 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6030 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6031 if (error != 0) { 6032 free(nd, M_TEMP); 6033 return (error); 6034 } 6035 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n", 6036 nd->nd_repstat); 6037 /* Get rid of weak cache consistency data for now. */ 6038 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 6039 (ND_NFSV4 | ND_V4WCCATTR)) { 6040 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6041 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 6042 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error); 6043 if (error != 0) 6044 goto nfsmout; 6045 /* 6046 * Get rid of Op# and status for next op. 6047 */ 6048 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6049 if (*++tl != 0) 6050 nd->nd_flag |= ND_NOMOREDATA; 6051 } 6052 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 6053 if (error != 0) 6054 goto nfsmout; 6055 if (nd->nd_repstat != 0) 6056 error = nd->nd_repstat; 6057 /* 6058 * Get the Change, Size, Access Time and Modify Time attributes and set 6059 * on the Metadata file, so its attributes will be what the file's 6060 * would be if it had been written. 6061 */ 6062 if (error == 0) { 6063 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6064 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6065 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 6066 } 6067 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error); 6068 nfsmout: 6069 m_freem(nd->nd_mrep); 6070 free(nd, M_TEMP); 6071 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error); 6072 return (error); 6073 } 6074 6075 struct nfsrvsetattrdsdorpc { 6076 int done; 6077 int inprog; 6078 struct task tsk; 6079 fhandle_t fh; 6080 struct nfsmount *nmp; 6081 struct vnode *vp; 6082 struct ucred *cred; 6083 NFSPROC_T *p; 6084 struct nfsvattr na; 6085 struct nfsvattr dsna; 6086 int err; 6087 }; 6088 6089 /* 6090 * Start up the thread that will execute nfsrv_setattrdsdorpc(). 6091 */ 6092 static void 6093 start_setattrdsdorpc(void *arg, int pending) 6094 { 6095 struct nfsrvsetattrdsdorpc *drpc; 6096 6097 drpc = (struct nfsrvsetattrdsdorpc *)arg; 6098 drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p, 6099 drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna); 6100 drpc->done = 1; 6101 } 6102 6103 static int 6104 nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6105 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 6106 struct nfsvattr *nap, int *failposp) 6107 { 6108 struct nfsrvsetattrdsdorpc *drpc, *tdrpc = NULL; 6109 struct nfsvattr na; 6110 int error, i, ret, timo; 6111 6112 NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n"); 6113 drpc = NULL; 6114 if (mirrorcnt > 1) 6115 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6116 M_WAITOK); 6117 6118 /* 6119 * Do the setattr RPC for every DS, using a separate kernel process 6120 * for every DS except the last one. 6121 */ 6122 error = 0; 6123 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6124 tdrpc->done = 0; 6125 tdrpc->inprog = 0; 6126 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6127 tdrpc->nmp = *nmpp; 6128 tdrpc->vp = vp; 6129 tdrpc->cred = cred; 6130 tdrpc->p = p; 6131 tdrpc->na = *nap; 6132 tdrpc->err = 0; 6133 ret = EIO; 6134 if (nfs_pnfsiothreads != 0) { 6135 ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc); 6136 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n", 6137 ret); 6138 } 6139 if (ret != 0) { 6140 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, 6141 &na); 6142 if (nfsds_failerr(ret) && *failposp == -1) 6143 *failposp = i; 6144 else if (error == 0 && ret != 0) 6145 error = ret; 6146 } 6147 nmpp++; 6148 fhp++; 6149 } 6150 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na); 6151 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6152 *failposp = mirrorcnt - 1; 6153 else if (error == 0 && ret != 0) 6154 error = ret; 6155 if (error == 0) 6156 error = nfsrv_setextattr(vp, &na, p); 6157 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error); 6158 tdrpc = drpc; 6159 timo = hz / 50; /* Wait for 20msec. */ 6160 if (timo < 1) 6161 timo = 1; 6162 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6163 /* Wait for RPCs on separate threads to complete. */ 6164 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6165 tsleep(&tdrpc->tsk, PVFS, "srvsads", timo); 6166 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6167 *failposp = i; 6168 else if (error == 0 && tdrpc->err != 0) 6169 error = tdrpc->err; 6170 } 6171 free(drpc, M_TEMP); 6172 return (error); 6173 } 6174 6175 /* 6176 * Do a Setattr of an NFSv4 ACL on the DS file. 6177 */ 6178 static int 6179 nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6180 struct vnode *vp, struct nfsmount *nmp, struct acl *aclp) 6181 { 6182 struct nfsrv_descript *nd; 6183 nfsv4stateid_t st; 6184 nfsattrbit_t attrbits; 6185 int error; 6186 6187 NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n"); 6188 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6189 /* 6190 * Use a stateid where other is an alternating 01010 pattern and 6191 * seqid is 0xffffffff. This value is not defined as special by 6192 * the RFC and is used by the FreeBSD NFS server to indicate an 6193 * MDS->DS proxy operation. 6194 */ 6195 st.other[0] = 0x55555555; 6196 st.other[1] = 0x55555555; 6197 st.other[2] = 0x55555555; 6198 st.seqid = 0xffffffff; 6199 nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6200 NULL, NULL, 0, 0, cred); 6201 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6202 NFSZERO_ATTRBIT(&attrbits); 6203 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 6204 /* 6205 * The "vp" argument to nfsv4_fillattr() is only used for vnode_type(), 6206 * so passing in the metadata "vp" will be ok, since it is of 6207 * the same type (VREG). 6208 */ 6209 nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL, 6210 NULL, 0, 0, 0, 0, 0, NULL); 6211 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6212 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6213 if (error != 0) { 6214 free(nd, M_TEMP); 6215 return (error); 6216 } 6217 NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n", 6218 nd->nd_repstat); 6219 error = nd->nd_repstat; 6220 m_freem(nd->nd_mrep); 6221 free(nd, M_TEMP); 6222 return (error); 6223 } 6224 6225 struct nfsrvsetacldsdorpc { 6226 int done; 6227 int inprog; 6228 struct task tsk; 6229 fhandle_t fh; 6230 struct nfsmount *nmp; 6231 struct vnode *vp; 6232 struct ucred *cred; 6233 NFSPROC_T *p; 6234 struct acl *aclp; 6235 int err; 6236 }; 6237 6238 /* 6239 * Start up the thread that will execute nfsrv_setacldsdorpc(). 6240 */ 6241 static void 6242 start_setacldsdorpc(void *arg, int pending) 6243 { 6244 struct nfsrvsetacldsdorpc *drpc; 6245 6246 drpc = (struct nfsrvsetacldsdorpc *)arg; 6247 drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p, 6248 drpc->vp, drpc->nmp, drpc->aclp); 6249 drpc->done = 1; 6250 } 6251 6252 static int 6253 nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6254 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp, 6255 int *failposp) 6256 { 6257 struct nfsrvsetacldsdorpc *drpc, *tdrpc = NULL; 6258 int error, i, ret, timo; 6259 6260 NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n"); 6261 drpc = NULL; 6262 if (mirrorcnt > 1) 6263 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6264 M_WAITOK); 6265 6266 /* 6267 * Do the setattr RPC for every DS, using a separate kernel process 6268 * for every DS except the last one. 6269 */ 6270 error = 0; 6271 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6272 tdrpc->done = 0; 6273 tdrpc->inprog = 0; 6274 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6275 tdrpc->nmp = *nmpp; 6276 tdrpc->vp = vp; 6277 tdrpc->cred = cred; 6278 tdrpc->p = p; 6279 tdrpc->aclp = aclp; 6280 tdrpc->err = 0; 6281 ret = EIO; 6282 if (nfs_pnfsiothreads != 0) { 6283 ret = nfs_pnfsio(start_setacldsdorpc, tdrpc); 6284 NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n", 6285 ret); 6286 } 6287 if (ret != 0) { 6288 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, 6289 aclp); 6290 if (nfsds_failerr(ret) && *failposp == -1) 6291 *failposp = i; 6292 else if (error == 0 && ret != 0) 6293 error = ret; 6294 } 6295 nmpp++; 6296 fhp++; 6297 } 6298 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp); 6299 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6300 *failposp = mirrorcnt - 1; 6301 else if (error == 0 && ret != 0) 6302 error = ret; 6303 NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error); 6304 tdrpc = drpc; 6305 timo = hz / 50; /* Wait for 20msec. */ 6306 if (timo < 1) 6307 timo = 1; 6308 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6309 /* Wait for RPCs on separate threads to complete. */ 6310 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6311 tsleep(&tdrpc->tsk, PVFS, "srvacds", timo); 6312 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6313 *failposp = i; 6314 else if (error == 0 && tdrpc->err != 0) 6315 error = tdrpc->err; 6316 } 6317 free(drpc, M_TEMP); 6318 return (error); 6319 } 6320 6321 /* 6322 * Getattr call to the DS for the attributes that change due to writing. 6323 */ 6324 static int 6325 nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6326 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap) 6327 { 6328 struct nfsrv_descript *nd; 6329 int error; 6330 nfsattrbit_t attrbits; 6331 6332 NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n"); 6333 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6334 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp, 6335 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6336 NFSZERO_ATTRBIT(&attrbits); 6337 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6338 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6339 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6340 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6341 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6342 (void) nfsrv_putattrbit(nd, &attrbits); 6343 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6344 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6345 if (error != 0) { 6346 free(nd, M_TEMP); 6347 return (error); 6348 } 6349 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n", 6350 nd->nd_repstat); 6351 if (nd->nd_repstat == 0) { 6352 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 6353 NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, 6354 NULL, NULL); 6355 /* 6356 * We can only save the updated values in the extended 6357 * attribute if the vp is exclusively locked. 6358 * This should happen when any of the following operations 6359 * occur on the vnode: 6360 * Close, Delegreturn, LayoutCommit, LayoutReturn 6361 * As such, the updated extended attribute should get saved 6362 * before nfsrv_checkdsattr() returns 0 and allows the cached 6363 * attributes to be returned without calling this function. 6364 */ 6365 if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) { 6366 error = nfsrv_setextattr(vp, nap, p); 6367 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n", 6368 error); 6369 } 6370 } else 6371 error = nd->nd_repstat; 6372 m_freem(nd->nd_mrep); 6373 free(nd, M_TEMP); 6374 NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error); 6375 return (error); 6376 } 6377 6378 /* 6379 * Seek call to a DS. 6380 */ 6381 static int 6382 nfsrv_seekdsrpc(fhandle_t *fhp, off_t *offp, int content, bool *eofp, 6383 struct ucred *cred, NFSPROC_T *p, struct nfsmount *nmp) 6384 { 6385 uint32_t *tl; 6386 struct nfsrv_descript *nd; 6387 nfsv4stateid_t st; 6388 int error; 6389 6390 NFSD_DEBUG(4, "in nfsrv_seekdsrpc\n"); 6391 /* 6392 * Use a stateid where other is an alternating 01010 pattern and 6393 * seqid is 0xffffffff. This value is not defined as special by 6394 * the RFC and is used by the FreeBSD NFS server to indicate an 6395 * MDS->DS proxy operation. 6396 */ 6397 st.other[0] = 0x55555555; 6398 st.other[1] = 0x55555555; 6399 st.other[2] = 0x55555555; 6400 st.seqid = 0xffffffff; 6401 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6402 nfscl_reqstart(nd, NFSPROC_SEEKDS, nmp, (u_int8_t *)fhp, 6403 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6404 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6405 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6406 txdr_hyper(*offp, tl); tl += 2; 6407 *tl = txdr_unsigned(content); 6408 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6409 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6410 if (error != 0) { 6411 free(nd, M_TEMP); 6412 return (error); 6413 } 6414 NFSD_DEBUG(4, "nfsrv_seekdsrpc: aft seekrpc=%d\n", nd->nd_repstat); 6415 if (nd->nd_repstat == 0) { 6416 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + NFSX_HYPER); 6417 if (*tl++ == newnfs_true) 6418 *eofp = true; 6419 else 6420 *eofp = false; 6421 *offp = fxdr_hyper(tl); 6422 } else 6423 error = nd->nd_repstat; 6424 nfsmout: 6425 m_freem(nd->nd_mrep); 6426 free(nd, M_TEMP); 6427 NFSD_DEBUG(4, "nfsrv_seekdsrpc error=%d\n", error); 6428 return (error); 6429 } 6430 6431 /* 6432 * Get the device id and file handle for a DS file. 6433 */ 6434 int 6435 nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp, 6436 fhandle_t *fhp, char *devid) 6437 { 6438 int buflen, error; 6439 char *buf; 6440 6441 buflen = 1024; 6442 buf = malloc(buflen, M_TEMP, M_WAITOK); 6443 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL, 6444 fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL); 6445 free(buf, M_TEMP); 6446 return (error); 6447 } 6448 6449 /* 6450 * Do a Lookup against the DS for the filename. 6451 */ 6452 static int 6453 nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf, 6454 struct vnode **nvpp, NFSPROC_T *p) 6455 { 6456 struct nameidata named; 6457 struct ucred *tcred; 6458 char *bufp; 6459 u_long *hashp; 6460 struct vnode *nvp; 6461 int error; 6462 6463 tcred = newnfs_getcred(); 6464 named.ni_cnd.cn_nameiop = LOOKUP; 6465 named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY; 6466 named.ni_cnd.cn_cred = tcred; 6467 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 6468 nfsvno_setpathbuf(&named, &bufp, &hashp); 6469 named.ni_cnd.cn_nameptr = bufp; 6470 named.ni_cnd.cn_namelen = strlen(pf->dsf_filename); 6471 strlcpy(bufp, pf->dsf_filename, NAME_MAX); 6472 NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp); 6473 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 6474 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error); 6475 NFSFREECRED(tcred); 6476 nfsvno_relpathbuf(&named); 6477 if (error == 0) 6478 *nvpp = nvp; 6479 NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error); 6480 return (error); 6481 } 6482 6483 /* 6484 * Set the file handle to the correct one. 6485 */ 6486 static void 6487 nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, char *devid, 6488 char *fnamep, struct vnode *nvp, NFSPROC_T *p) 6489 { 6490 struct nfsnode *np; 6491 int ret = 0; 6492 6493 np = VTONFS(nvp); 6494 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH); 6495 /* 6496 * We can only do a vn_set_extattr() if the vnode is exclusively 6497 * locked and vn_start_write() has been done. If devid != NULL or 6498 * fnamep != NULL or the vnode is shared locked, vn_start_write() 6499 * may not have been done. 6500 * If not done now, it will be done on a future call. 6501 */ 6502 if (devid == NULL && fnamep == NULL && NFSVOPISLOCKED(vp) == 6503 LK_EXCLUSIVE) 6504 ret = vn_extattr_set(vp, IO_NODELOCKED, 6505 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", sizeof(*pf), 6506 (char *)pf, p); 6507 NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret); 6508 } 6509 6510 /* 6511 * Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point 6512 * when the DS has failed. 6513 */ 6514 void 6515 nfsrv_killrpcs(struct nfsmount *nmp) 6516 { 6517 6518 /* 6519 * Call newnfs_nmcancelreqs() to cause 6520 * any RPCs in progress on the mount point to 6521 * fail. 6522 * This will cause any process waiting for an 6523 * RPC to complete while holding a vnode lock 6524 * on the mounted-on vnode (such as "df" or 6525 * a non-forced "umount") to fail. 6526 * This will unlock the mounted-on vnode so 6527 * a forced dismount can succeed. 6528 * The NFSMNTP_CANCELRPCS flag should be set when this function is 6529 * called. 6530 */ 6531 newnfs_nmcancelreqs(nmp); 6532 } 6533 6534 /* 6535 * Sum up the statfs info for each of the DSs, so that the client will 6536 * receive the total for all DSs. 6537 */ 6538 static int 6539 nfsrv_pnfsstatfs(struct statfs *sf, struct mount *mp) 6540 { 6541 struct statfs *tsf; 6542 struct nfsdevice *ds; 6543 struct vnode **dvpp, **tdvpp, *dvp; 6544 uint64_t tot; 6545 int cnt, error = 0, i; 6546 6547 if (nfsrv_devidcnt <= 0) 6548 return (ENXIO); 6549 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 6550 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 6551 6552 /* Get an array of the dvps for the DSs. */ 6553 tdvpp = dvpp; 6554 i = 0; 6555 NFSDDSLOCK(); 6556 /* First, search for matches for same file system. */ 6557 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6558 if (ds->nfsdev_nmp != NULL && ds->nfsdev_mdsisset != 0 && 6559 fsidcmp(&ds->nfsdev_mdsfsid, &mp->mnt_stat.f_fsid) == 0) { 6560 if (++i > nfsrv_devidcnt) 6561 break; 6562 *tdvpp++ = ds->nfsdev_dvp; 6563 } 6564 } 6565 /* 6566 * If no matches for same file system, total all servers not assigned 6567 * to a file system. 6568 */ 6569 if (i == 0) { 6570 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6571 if (ds->nfsdev_nmp != NULL && 6572 ds->nfsdev_mdsisset == 0) { 6573 if (++i > nfsrv_devidcnt) 6574 break; 6575 *tdvpp++ = ds->nfsdev_dvp; 6576 } 6577 } 6578 } 6579 NFSDDSUNLOCK(); 6580 cnt = i; 6581 6582 /* Do a VFS_STATFS() for each of the DSs and sum them up. */ 6583 tdvpp = dvpp; 6584 for (i = 0; i < cnt && error == 0; i++) { 6585 dvp = *tdvpp++; 6586 error = VFS_STATFS(dvp->v_mount, tsf); 6587 if (error == 0) { 6588 if (sf->f_bsize == 0) { 6589 if (tsf->f_bsize > 0) 6590 sf->f_bsize = tsf->f_bsize; 6591 else 6592 sf->f_bsize = 8192; 6593 } 6594 if (tsf->f_blocks > 0) { 6595 if (sf->f_bsize != tsf->f_bsize) { 6596 tot = tsf->f_blocks * tsf->f_bsize; 6597 sf->f_blocks += (tot / sf->f_bsize); 6598 } else 6599 sf->f_blocks += tsf->f_blocks; 6600 } 6601 if (tsf->f_bfree > 0) { 6602 if (sf->f_bsize != tsf->f_bsize) { 6603 tot = tsf->f_bfree * tsf->f_bsize; 6604 sf->f_bfree += (tot / sf->f_bsize); 6605 } else 6606 sf->f_bfree += tsf->f_bfree; 6607 } 6608 if (tsf->f_bavail > 0) { 6609 if (sf->f_bsize != tsf->f_bsize) { 6610 tot = tsf->f_bavail * tsf->f_bsize; 6611 sf->f_bavail += (tot / sf->f_bsize); 6612 } else 6613 sf->f_bavail += tsf->f_bavail; 6614 } 6615 } 6616 } 6617 free(tsf, M_TEMP); 6618 free(dvpp, M_TEMP); 6619 return (error); 6620 } 6621 6622 /* 6623 * Set an NFSv4 acl. 6624 */ 6625 int 6626 nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p) 6627 { 6628 int error; 6629 6630 if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) { 6631 error = NFSERR_ATTRNOTSUPP; 6632 goto out; 6633 } 6634 /* 6635 * With NFSv4 ACLs, chmod(2) may need to add additional entries. 6636 * Make sure it has enough room for that - splitting every entry 6637 * into two and appending "canonical six" entries at the end. 6638 * Cribbed out of kern/vfs_acl.c - Rick M. 6639 */ 6640 if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) { 6641 error = NFSERR_ATTRNOTSUPP; 6642 goto out; 6643 } 6644 error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p); 6645 if (error == 0) { 6646 error = nfsrv_dssetacl(vp, aclp, cred, p); 6647 if (error == ENOENT) 6648 error = 0; 6649 } 6650 6651 out: 6652 NFSEXITCODE(error); 6653 return (error); 6654 } 6655 6656 /* 6657 * Seek vnode op call (actually it is a VOP_IOCTL()). 6658 * This function is called with the vnode locked, but unlocks and vrele()s 6659 * the vp before returning. 6660 */ 6661 int 6662 nfsvno_seek(struct nfsrv_descript *nd, struct vnode *vp, u_long cmd, 6663 off_t *offp, int content, bool *eofp, struct ucred *cred, NFSPROC_T *p) 6664 { 6665 struct nfsvattr at; 6666 int error, ret; 6667 6668 ASSERT_VOP_LOCKED(vp, "nfsvno_seek vp"); 6669 /* 6670 * Attempt to seek on a DS file. A return of ENOENT implies 6671 * there is no DS file to seek on. 6672 */ 6673 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SEEKDS, NULL, 6674 NULL, NULL, NULL, NULL, offp, content, eofp); 6675 if (error != ENOENT) { 6676 vput(vp); 6677 return (error); 6678 } 6679 6680 /* 6681 * Do the VOP_IOCTL() call. For the case where *offp == file_size, 6682 * VOP_IOCTL() will return ENXIO. However, the correct reply for 6683 * NFSv4.2 is *eofp == true and error == 0 for this case. 6684 */ 6685 NFSVOPUNLOCK(vp); 6686 error = VOP_IOCTL(vp, cmd, offp, 0, cred, p); 6687 *eofp = false; 6688 if (error == ENXIO || (error == 0 && cmd == FIOSEEKHOLE)) { 6689 /* Handle the cases where we might be at EOF. */ 6690 ret = nfsvno_getattr(vp, &at, nd, p, 0, NULL); 6691 if (ret == 0 && *offp == at.na_size) { 6692 *eofp = true; 6693 error = 0; 6694 } 6695 if (ret != 0 && error == 0) 6696 error = ret; 6697 } 6698 vrele(vp); 6699 NFSEXITCODE(error); 6700 return (error); 6701 } 6702 6703 /* 6704 * Allocate vnode op call. 6705 */ 6706 int 6707 nfsvno_allocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6708 NFSPROC_T *p) 6709 { 6710 int error; 6711 off_t olen; 6712 6713 ASSERT_VOP_ELOCKED(vp, "nfsvno_allocate vp"); 6714 /* 6715 * Attempt to allocate on a DS file. A return of ENOENT implies 6716 * there is no DS file to allocate on. 6717 */ 6718 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_ALLOCATE, NULL, 6719 NULL, NULL, NULL, NULL, &len, 0, NULL); 6720 if (error != ENOENT) 6721 return (error); 6722 6723 /* 6724 * Do the actual VOP_ALLOCATE(), looping so long as 6725 * progress is being made, to achieve completion. 6726 */ 6727 do { 6728 olen = len; 6729 error = VOP_ALLOCATE(vp, &off, &len, IO_SYNC, cred); 6730 if (error == 0 && len > 0 && olen > len) 6731 maybe_yield(); 6732 } while (error == 0 && len > 0 && olen > len); 6733 if (error == 0 && len > 0) 6734 error = NFSERR_IO; 6735 NFSEXITCODE(error); 6736 return (error); 6737 } 6738 6739 /* 6740 * Deallocate vnode op call. 6741 */ 6742 int 6743 nfsvno_deallocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6744 NFSPROC_T *p) 6745 { 6746 int error; 6747 off_t olen; 6748 6749 ASSERT_VOP_ELOCKED(vp, "nfsvno_deallocate vp"); 6750 /* 6751 * Attempt to deallocate on a DS file. A return of ENOENT implies 6752 * there is no DS file to deallocate on. 6753 */ 6754 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_DEALLOCATE, NULL, 6755 NULL, NULL, NULL, NULL, &len, 0, NULL); 6756 if (error != ENOENT) 6757 return (error); 6758 6759 /* 6760 * Do the actual VOP_DEALLOCATE(), looping so long as 6761 * progress is being made, to achieve completion. 6762 */ 6763 do { 6764 olen = len; 6765 error = VOP_DEALLOCATE(vp, &off, &len, 0, IO_SYNC, cred); 6766 if (error == 0 && len > 0 && olen > len) 6767 maybe_yield(); 6768 } while (error == 0 && len > 0 && olen > len); 6769 if (error == 0 && len > 0) 6770 error = NFSERR_IO; 6771 NFSEXITCODE(error); 6772 return (error); 6773 } 6774 6775 /* 6776 * Get Extended Atribute vnode op into an mbuf list. 6777 */ 6778 int 6779 nfsvno_getxattr(struct vnode *vp, char *name, uint32_t maxresp, 6780 struct ucred *cred, uint64_t flag, int maxextsiz, struct thread *p, 6781 struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 6782 { 6783 struct iovec *iv; 6784 struct uio io, *uiop = &io; 6785 struct mbuf *m, *m2; 6786 int alen, error, len, tlen; 6787 size_t siz; 6788 6789 /* First, find out the size of the extended attribute. */ 6790 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6791 &siz, cred, p); 6792 if (error != 0) 6793 return (NFSERR_NOXATTR); 6794 if (siz > maxresp - NFS_MAXXDR) 6795 return (NFSERR_XATTR2BIG); 6796 len = siz; 6797 tlen = NFSM_RNDUP(len); 6798 if (tlen > 0) { 6799 /* 6800 * If cnt > MCLBYTES and the reply will not be saved, use 6801 * ext_pgs mbufs for TLS. 6802 * For NFSv4.0, we do not know for sure if the reply will 6803 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 6804 * Always use ext_pgs mbufs if ND_EXTPG is set. 6805 */ 6806 if ((flag & ND_EXTPG) != 0 || (tlen > MCLBYTES && 6807 (flag & (ND_TLS | ND_SAVEREPLY)) == ND_TLS && 6808 (flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4)) 6809 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(tlen, 6810 maxextsiz, &m, &m2, &iv); 6811 else 6812 uiop->uio_iovcnt = nfsrv_createiovec(tlen, &m, &m2, 6813 &iv); 6814 uiop->uio_iov = iv; 6815 } else { 6816 uiop->uio_iovcnt = 0; 6817 uiop->uio_iov = iv = NULL; 6818 m = m2 = NULL; 6819 } 6820 uiop->uio_offset = 0; 6821 uiop->uio_resid = tlen; 6822 uiop->uio_rw = UIO_READ; 6823 uiop->uio_segflg = UIO_SYSSPACE; 6824 uiop->uio_td = p; 6825 #ifdef MAC 6826 error = mac_vnode_check_getextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6827 name); 6828 if (error != 0) 6829 goto out; 6830 #endif 6831 6832 if (tlen > 0) 6833 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6834 NULL, cred, p); 6835 if (error != 0) 6836 goto out; 6837 if (uiop->uio_resid > 0) { 6838 alen = tlen; 6839 len = tlen - uiop->uio_resid; 6840 tlen = NFSM_RNDUP(len); 6841 if (alen != tlen) 6842 printf("nfsvno_getxattr: weird size read\n"); 6843 if (tlen == 0) { 6844 m_freem(m); 6845 m = m2 = NULL; 6846 } else if (alen != tlen || tlen != len) 6847 m2 = nfsrv_adj(m, alen - tlen, tlen - len); 6848 } 6849 *lenp = len; 6850 *mpp = m; 6851 *mpendp = m2; 6852 6853 out: 6854 if (error != 0) { 6855 if (m != NULL) 6856 m_freem(m); 6857 *lenp = 0; 6858 } 6859 free(iv, M_TEMP); 6860 NFSEXITCODE(error); 6861 return (error); 6862 } 6863 6864 /* 6865 * Set Extended attribute vnode op from an mbuf list. 6866 */ 6867 int 6868 nfsvno_setxattr(struct vnode *vp, char *name, int len, struct mbuf *m, 6869 char *cp, struct ucred *cred, struct thread *p) 6870 { 6871 struct iovec *iv; 6872 struct uio uio, *uiop = &uio; 6873 int cnt, error; 6874 6875 error = 0; 6876 #ifdef MAC 6877 error = mac_vnode_check_setextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6878 name); 6879 #endif 6880 if (error != 0) 6881 goto out; 6882 6883 uiop->uio_rw = UIO_WRITE; 6884 uiop->uio_segflg = UIO_SYSSPACE; 6885 uiop->uio_td = p; 6886 uiop->uio_offset = 0; 6887 uiop->uio_resid = len; 6888 if (len > 0) { 6889 error = nfsrv_createiovecw(len, m, cp, &iv, &cnt); 6890 uiop->uio_iov = iv; 6891 uiop->uio_iovcnt = cnt; 6892 } else { 6893 uiop->uio_iov = iv = NULL; 6894 uiop->uio_iovcnt = 0; 6895 } 6896 if (error == 0) { 6897 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6898 cred, p); 6899 if (error == 0) { 6900 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6901 nfsvno_updateds(vp, cred, p); 6902 error = VOP_FSYNC(vp, MNT_WAIT, p); 6903 } 6904 free(iv, M_TEMP); 6905 } 6906 6907 out: 6908 NFSEXITCODE(error); 6909 return (error); 6910 } 6911 6912 /* 6913 * For a pNFS server, the DS file's ctime and 6914 * va_filerev (TimeMetadata and Change) needs to 6915 * be updated. This is a hack, but works by 6916 * flipping the S_ISGID bit in va_mode and then 6917 * flipping it back. 6918 * It does result in two MDS->DS RPCs, but creating 6919 * a custom RPC just to do this seems overkill, since 6920 * Setxattr/Rmxattr will not be done that frequently. 6921 * If it fails part way through, that is not too 6922 * serious, since the DS file is never executed. 6923 */ 6924 static void 6925 nfsvno_updateds(struct vnode *vp, struct ucred *cred, NFSPROC_T *p) 6926 { 6927 struct nfsvattr nva; 6928 int ret; 6929 u_short tmode; 6930 6931 ret = VOP_GETATTR(vp, &nva.na_vattr, cred); 6932 if (ret == 0) { 6933 tmode = nva.na_mode; 6934 NFSVNO_ATTRINIT(&nva); 6935 tmode ^= S_ISGID; 6936 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6937 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6938 NFSPROC_SETATTR, NULL, NULL, NULL, &nva, 6939 NULL, NULL, 0, NULL); 6940 if (ret == 0) { 6941 tmode ^= S_ISGID; 6942 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6943 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6944 NFSPROC_SETATTR, NULL, NULL, NULL, 6945 &nva, NULL, NULL, 0, NULL); 6946 } 6947 } 6948 } 6949 6950 /* 6951 * Remove Extended attribute vnode op. 6952 */ 6953 int 6954 nfsvno_rmxattr(struct nfsrv_descript *nd, struct vnode *vp, char *name, 6955 struct ucred *cred, struct thread *p) 6956 { 6957 int error; 6958 6959 /* 6960 * Get rid of any delegations. I am not sure why this is required, 6961 * but RFC-8276 says so. 6962 */ 6963 error = nfsrv_checkremove(vp, 0, nd, nd->nd_clientid, p); 6964 if (error != 0) 6965 goto out; 6966 #ifdef MAC 6967 error = mac_vnode_check_deleteextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6968 name); 6969 if (error != 0) 6970 goto out; 6971 #endif 6972 6973 error = VOP_DELETEEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, cred, p); 6974 if (error == EOPNOTSUPP) 6975 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6976 cred, p); 6977 if (error == 0) { 6978 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6979 nfsvno_updateds(vp, cred, p); 6980 error = VOP_FSYNC(vp, MNT_WAIT, p); 6981 } 6982 out: 6983 NFSEXITCODE(error); 6984 return (error); 6985 } 6986 6987 /* 6988 * List Extended Atribute vnode op into an mbuf list. 6989 */ 6990 int 6991 nfsvno_listxattr(struct vnode *vp, uint64_t cookie, struct ucred *cred, 6992 struct thread *p, u_char **bufp, uint32_t *lenp, bool *eofp) 6993 { 6994 struct iovec iv; 6995 struct uio io; 6996 int error; 6997 size_t siz; 6998 6999 *bufp = NULL; 7000 /* First, find out the size of the extended attribute. */ 7001 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, NULL, &siz, cred, 7002 p); 7003 if (error != 0) 7004 return (NFSERR_NOXATTR); 7005 if (siz <= cookie) { 7006 *lenp = 0; 7007 *eofp = true; 7008 goto out; 7009 } 7010 if (siz > cookie + *lenp) { 7011 siz = cookie + *lenp; 7012 *eofp = false; 7013 } else 7014 *eofp = true; 7015 /* Just choose a sanity limit of 10Mbytes for malloc(M_TEMP). */ 7016 if (siz > 10 * 1024 * 1024) { 7017 error = NFSERR_XATTR2BIG; 7018 goto out; 7019 } 7020 *bufp = malloc(siz, M_TEMP, M_WAITOK); 7021 iv.iov_base = *bufp; 7022 iv.iov_len = siz; 7023 io.uio_iovcnt = 1; 7024 io.uio_iov = &iv; 7025 io.uio_offset = 0; 7026 io.uio_resid = siz; 7027 io.uio_rw = UIO_READ; 7028 io.uio_segflg = UIO_SYSSPACE; 7029 io.uio_td = p; 7030 #ifdef MAC 7031 error = mac_vnode_check_listextattr(cred, vp, EXTATTR_NAMESPACE_USER); 7032 if (error != 0) 7033 goto out; 7034 #endif 7035 7036 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, &io, NULL, cred, 7037 p); 7038 if (error != 0) 7039 goto out; 7040 if (io.uio_resid > 0) 7041 siz -= io.uio_resid; 7042 *lenp = siz; 7043 7044 out: 7045 if (error != 0) { 7046 free(*bufp, M_TEMP); 7047 *bufp = NULL; 7048 } 7049 NFSEXITCODE(error); 7050 return (error); 7051 } 7052 7053 /* 7054 * Trim trailing data off the mbuf list being built. 7055 */ 7056 void 7057 nfsm_trimtrailing(struct nfsrv_descript *nd, struct mbuf *mb, char *bpos, 7058 int bextpg, int bextpgsiz) 7059 { 7060 vm_page_t pg; 7061 int fullpgsiz, i; 7062 7063 if (mb->m_next != NULL) { 7064 m_freem(mb->m_next); 7065 mb->m_next = NULL; 7066 } 7067 if ((mb->m_flags & M_EXTPG) != 0) { 7068 KASSERT(bextpg >= 0 && bextpg < mb->m_epg_npgs, 7069 ("nfsm_trimtrailing: bextpg out of range")); 7070 KASSERT(bpos == (char *)(void *) 7071 PHYS_TO_DMAP(mb->m_epg_pa[bextpg]) + PAGE_SIZE - bextpgsiz, 7072 ("nfsm_trimtrailing: bextpgsiz bad!")); 7073 7074 /* First, get rid of any pages after this position. */ 7075 for (i = mb->m_epg_npgs - 1; i > bextpg; i--) { 7076 pg = PHYS_TO_VM_PAGE(mb->m_epg_pa[i]); 7077 vm_page_unwire_noq(pg); 7078 vm_page_free(pg); 7079 } 7080 mb->m_epg_npgs = bextpg + 1; 7081 if (bextpg == 0) 7082 fullpgsiz = PAGE_SIZE - mb->m_epg_1st_off; 7083 else 7084 fullpgsiz = PAGE_SIZE; 7085 mb->m_epg_last_len = fullpgsiz - bextpgsiz; 7086 mb->m_len = m_epg_pagelen(mb, 0, mb->m_epg_1st_off); 7087 for (i = 1; i < mb->m_epg_npgs; i++) 7088 mb->m_len += m_epg_pagelen(mb, i, 0); 7089 nd->nd_bextpgsiz = bextpgsiz; 7090 nd->nd_bextpg = bextpg; 7091 } else 7092 mb->m_len = bpos - mtod(mb, char *); 7093 nd->nd_mb = mb; 7094 nd->nd_bpos = bpos; 7095 } 7096 7097 7098 /* 7099 * Check to see if a put file handle operation should test for 7100 * NFSERR_WRONGSEC, although NFSv3 actually returns NFSERR_AUTHERR. 7101 * When Open is the next operation, NFSERR_WRONGSEC cannot be 7102 * replied for the Open cases that use a component. This can 7103 * be identified by the fact that the file handle's type is VDIR. 7104 */ 7105 bool 7106 nfsrv_checkwrongsec(struct nfsrv_descript *nd, int nextop, __enum_uint8(vtype) vtyp) 7107 { 7108 7109 if ((nd->nd_flag & ND_NFSV4) == 0) 7110 return (true); 7111 7112 if ((nd->nd_flag & ND_LASTOP) != 0) 7113 return (false); 7114 7115 if (nextop == NFSV4OP_PUTROOTFH || nextop == NFSV4OP_PUTFH || 7116 nextop == NFSV4OP_PUTPUBFH || nextop == NFSV4OP_RESTOREFH || 7117 nextop == NFSV4OP_LOOKUP || nextop == NFSV4OP_LOOKUPP || 7118 nextop == NFSV4OP_SECINFO || nextop == NFSV4OP_SECINFONONAME) 7119 return (false); 7120 if (nextop == NFSV4OP_OPEN && vtyp == VDIR) 7121 return (false); 7122 return (true); 7123 } 7124 7125 /* 7126 * Check DSs marked no space. 7127 */ 7128 void 7129 nfsrv_checknospc(void) 7130 { 7131 struct statfs *tsf; 7132 struct nfsdevice *ds; 7133 struct vnode **dvpp, **tdvpp, *dvp; 7134 char *devid, *tdevid; 7135 int cnt, error = 0, i; 7136 7137 if (nfsrv_devidcnt <= 0) 7138 return; 7139 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 7140 devid = malloc(nfsrv_devidcnt * NFSX_V4DEVICEID, M_TEMP, M_WAITOK); 7141 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 7142 7143 /* Get an array of the dvps for the DSs. */ 7144 tdvpp = dvpp; 7145 tdevid = devid; 7146 i = 0; 7147 NFSDDSLOCK(); 7148 /* First, search for matches for same file system. */ 7149 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 7150 if (ds->nfsdev_nmp != NULL && ds->nfsdev_nospc) { 7151 if (++i > nfsrv_devidcnt) 7152 break; 7153 *tdvpp++ = ds->nfsdev_dvp; 7154 NFSBCOPY(ds->nfsdev_deviceid, tdevid, NFSX_V4DEVICEID); 7155 tdevid += NFSX_V4DEVICEID; 7156 } 7157 } 7158 NFSDDSUNLOCK(); 7159 7160 /* Do a VFS_STATFS() for each of the DSs and clear no space. */ 7161 cnt = i; 7162 tdvpp = dvpp; 7163 tdevid = devid; 7164 for (i = 0; i < cnt && error == 0; i++) { 7165 dvp = *tdvpp++; 7166 error = VFS_STATFS(dvp->v_mount, tsf); 7167 if (error == 0 && tsf->f_bavail > 0) { 7168 NFSD_DEBUG(1, "nfsrv_checknospc: reset nospc\n"); 7169 nfsrv_marknospc(tdevid, false); 7170 } 7171 tdevid += NFSX_V4DEVICEID; 7172 } 7173 free(tsf, M_TEMP); 7174 free(dvpp, M_TEMP); 7175 free(devid, M_TEMP); 7176 } 7177 7178 /* 7179 * Initialize everything that needs to be initialized for a vnet. 7180 */ 7181 static void 7182 nfsrv_vnetinit(const void *unused __unused) 7183 { 7184 7185 nfsd_mntinit(); 7186 } 7187 VNET_SYSINIT(nfsrv_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7188 nfsrv_vnetinit, NULL); 7189 7190 /* 7191 * Clean up everything that is in a vnet and needs to be 7192 * done when the jail is destroyed or the module unloaded. 7193 */ 7194 static void 7195 nfsrv_cleanup(const void *unused __unused) 7196 { 7197 int i; 7198 7199 NFSD_LOCK(); 7200 if (!NFSD_VNET(nfsrv_mntinited)) { 7201 NFSD_UNLOCK(); 7202 return; 7203 } 7204 NFSD_VNET(nfsrv_mntinited) = false; 7205 NFSD_UNLOCK(); 7206 7207 /* Clean out all NFSv4 state. */ 7208 nfsrv_throwawayallstate(curthread); 7209 7210 /* Clean the NFS server reply cache */ 7211 nfsrvd_cleancache(); 7212 7213 /* Clean out v4root exports. */ 7214 if (NFSD_VNET(nfsv4root_mnt)->mnt_export != NULL) { 7215 vfs_free_addrlist(NFSD_VNET(nfsv4root_mnt)->mnt_export); 7216 free(NFSD_VNET(nfsv4root_mnt)->mnt_export, M_MOUNT); 7217 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 7218 } 7219 7220 /* Free up the krpc server pool. */ 7221 if (NFSD_VNET(nfsrvd_pool) != NULL) 7222 svcpool_destroy(NFSD_VNET(nfsrvd_pool)); 7223 7224 /* and get rid of the locks */ 7225 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 7226 mtx_destroy(&NFSD_VNET(nfsrchash_table)[i].mtx); 7227 mtx_destroy(&NFSD_VNET(nfsrcahash_table)[i].mtx); 7228 } 7229 mtx_destroy(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx); 7230 for (i = 0; i < nfsrv_sessionhashsize; i++) 7231 mtx_destroy(&NFSD_VNET(nfssessionhash)[i].mtx); 7232 lockdestroy(&NFSD_VNET(nfsv4root_mnt)->mnt_explock); 7233 free(NFSD_VNET(nfsrvudphashtbl), M_NFSRVCACHE); 7234 free(NFSD_VNET(nfsrchash_table), M_NFSRVCACHE); 7235 free(NFSD_VNET(nfsrcahash_table), M_NFSRVCACHE); 7236 free(NFSD_VNET(nfsclienthash), M_NFSDCLIENT); 7237 free(NFSD_VNET(nfslockhash), M_NFSDLOCKFILE); 7238 free(NFSD_VNET(nfssessionhash), M_NFSDSESSION); 7239 free(NFSD_VNET(nfsv4root_mnt), M_TEMP); 7240 NFSD_VNET(nfsv4root_mnt) = NULL; 7241 } 7242 VNET_SYSUNINIT(nfsrv_cleanup, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7243 nfsrv_cleanup, NULL); 7244 7245 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 7246 7247 /* 7248 * Called once to initialize data structures... 7249 */ 7250 static int 7251 nfsd_modevent(module_t mod, int type, void *data) 7252 { 7253 int error = 0, i; 7254 static int loaded = 0; 7255 7256 switch (type) { 7257 case MOD_LOAD: 7258 if (loaded) 7259 goto out; 7260 newnfs_portinit(); 7261 mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); 7262 mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); 7263 mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF); 7264 mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF); 7265 #ifdef VV_DISABLEDELEG 7266 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 7267 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 7268 #endif 7269 nfsd_call_nfsd = nfssvc_nfsd; 7270 loaded = 1; 7271 break; 7272 7273 case MOD_UNLOAD: 7274 if (newnfs_numnfsd != 0) { 7275 error = EBUSY; 7276 break; 7277 } 7278 7279 #ifdef VV_DISABLEDELEG 7280 vn_deleg_ops.vndeleg_recall = NULL; 7281 vn_deleg_ops.vndeleg_disable = NULL; 7282 #endif 7283 nfsd_call_nfsd = NULL; 7284 mtx_destroy(&nfsrc_udpmtx); 7285 mtx_destroy(&nfs_v4root_mutex); 7286 mtx_destroy(&nfsrv_dontlistlock_mtx); 7287 mtx_destroy(&nfsrv_recalllock_mtx); 7288 if (nfslayouthash != NULL) { 7289 for (i = 0; i < nfsrv_layouthashsize; i++) 7290 mtx_destroy(&nfslayouthash[i].mtx); 7291 free(nfslayouthash, M_NFSDSESSION); 7292 } 7293 loaded = 0; 7294 break; 7295 default: 7296 error = EOPNOTSUPP; 7297 break; 7298 } 7299 7300 out: 7301 NFSEXITCODE(error); 7302 return (error); 7303 } 7304 static moduledata_t nfsd_mod = { 7305 "nfsd", 7306 nfsd_modevent, 7307 NULL, 7308 }; 7309 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 7310 7311 /* So that loader and kldload(2) can find us, wherever we are.. */ 7312 MODULE_VERSION(nfsd, 1); 7313 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 7314 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 7315 MODULE_DEPEND(nfsd, krpc, 1, 1, 1); 7316 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 7317