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 default: 3216 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3217 /* 3218 * set bitpos so we drop out of the loop. 3219 */ 3220 bitpos = NFSATTRBIT_MAX; 3221 break; 3222 } 3223 } 3224 3225 /* 3226 * some clients pad the attrlist, so we need to skip over the 3227 * padding. 3228 */ 3229 if (attrsum > attrsize) { 3230 error = NFSERR_BADXDR; 3231 } else { 3232 attrsize = NFSM_RNDUP(attrsize); 3233 if (attrsum < attrsize) 3234 error = nfsm_advance(nd, attrsize - attrsum, -1); 3235 } 3236 nfsmout: 3237 NFSEXITCODE2(error, nd); 3238 return (error); 3239 } 3240 3241 /* 3242 * Check/setup export credentials. 3243 */ 3244 int 3245 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 3246 struct ucred *credanon, bool testsec) 3247 { 3248 int error; 3249 3250 /* 3251 * Check/setup credentials. 3252 */ 3253 if (nd->nd_flag & ND_GSS) 3254 exp->nes_exflag &= ~MNT_EXPORTANON; 3255 3256 /* 3257 * Check to see if the operation is allowed for this security flavor. 3258 */ 3259 error = 0; 3260 if (testsec) { 3261 error = nfsvno_testexp(nd, exp); 3262 if (error != 0) 3263 goto out; 3264 } 3265 3266 /* 3267 * Check to see if the file system is exported V4 only. 3268 */ 3269 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 3270 error = NFSERR_PROGNOTV4; 3271 goto out; 3272 } 3273 3274 /* 3275 * Now, map the user credentials. 3276 * (Note that ND_AUTHNONE will only be set for an NFSv3 3277 * Fsinfo RPC. If set for anything else, this code might need 3278 * to change.) 3279 */ 3280 if (NFSVNO_EXPORTED(exp)) { 3281 if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) || 3282 NFSVNO_EXPORTANON(exp) || 3283 (nd->nd_flag & ND_AUTHNONE) != 0) { 3284 nd->nd_cred->cr_uid = credanon->cr_uid; 3285 nd->nd_cred->cr_gid = credanon->cr_gid; 3286 crsetgroups(nd->nd_cred, credanon->cr_ngroups, 3287 credanon->cr_groups); 3288 } else if ((nd->nd_flag & ND_GSS) == 0) { 3289 /* 3290 * If using AUTH_SYS, call nfsrv_getgrpscred() to see 3291 * if there is a replacement credential with a group 3292 * list set up by "nfsuserd -manage-gids". 3293 * If there is no replacement, nfsrv_getgrpscred() 3294 * simply returns its argument. 3295 */ 3296 nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred); 3297 } 3298 } 3299 3300 out: 3301 NFSEXITCODE2(error, nd); 3302 return (error); 3303 } 3304 3305 /* 3306 * Check exports. 3307 */ 3308 int 3309 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 3310 struct ucred **credp) 3311 { 3312 int error; 3313 3314 error = 0; 3315 *credp = NULL; 3316 MNT_ILOCK(mp); 3317 if (mp->mnt_exjail == NULL || 3318 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3319 error = EACCES; 3320 MNT_IUNLOCK(mp); 3321 if (error == 0) 3322 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3323 &exp->nes_numsecflavor, exp->nes_secflavors); 3324 if (error) { 3325 if (NFSD_VNET(nfs_rootfhset)) { 3326 exp->nes_exflag = 0; 3327 exp->nes_numsecflavor = 0; 3328 error = 0; 3329 } 3330 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3331 MAXSECFLAVORS) { 3332 printf("nfsvno_checkexp: numsecflavors out of range\n"); 3333 exp->nes_numsecflavor = 0; 3334 error = EACCES; 3335 } 3336 NFSEXITCODE(error); 3337 return (error); 3338 } 3339 3340 /* 3341 * Get a vnode for a file handle and export stuff. 3342 */ 3343 int 3344 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 3345 int lktype, struct vnode **vpp, struct nfsexstuff *exp, 3346 struct ucred **credp) 3347 { 3348 int error; 3349 3350 *credp = NULL; 3351 exp->nes_numsecflavor = 0; 3352 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 3353 if (error != 0) 3354 /* Make sure the server replies ESTALE to the client. */ 3355 error = ESTALE; 3356 if (nam && !error) { 3357 MNT_ILOCK(mp); 3358 if (mp->mnt_exjail == NULL || 3359 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3360 error = EACCES; 3361 MNT_IUNLOCK(mp); 3362 if (error == 0) 3363 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3364 &exp->nes_numsecflavor, exp->nes_secflavors); 3365 if (error) { 3366 if (NFSD_VNET(nfs_rootfhset)) { 3367 exp->nes_exflag = 0; 3368 exp->nes_numsecflavor = 0; 3369 error = 0; 3370 } else { 3371 vput(*vpp); 3372 } 3373 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3374 MAXSECFLAVORS) { 3375 printf("nfsvno_fhtovp: numsecflavors out of range\n"); 3376 exp->nes_numsecflavor = 0; 3377 error = EACCES; 3378 vput(*vpp); 3379 } 3380 } 3381 NFSEXITCODE(error); 3382 return (error); 3383 } 3384 3385 /* 3386 * nfsd_fhtovp() - convert a fh to a vnode ptr 3387 * - look up fsid in mount list (if not found ret error) 3388 * - get vp and export rights by calling nfsvno_fhtovp() 3389 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 3390 * for AUTH_SYS 3391 * - if mpp != NULL, return the mount point so that it can 3392 * be used for vn_finished_write() by the caller 3393 */ 3394 void 3395 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 3396 struct vnode **vpp, struct nfsexstuff *exp, 3397 struct mount **mpp, int startwrite, int nextop) 3398 { 3399 struct mount *mp, *mpw; 3400 struct ucred *credanon; 3401 fhandle_t *fhp; 3402 int error; 3403 3404 if (mpp != NULL) 3405 *mpp = NULL; 3406 *vpp = NULL; 3407 fhp = (fhandle_t *)nfp->nfsrvfh_data; 3408 mp = vfs_busyfs(&fhp->fh_fsid); 3409 if (mp == NULL) { 3410 nd->nd_repstat = ESTALE; 3411 goto out; 3412 } 3413 3414 if (startwrite) { 3415 mpw = mp; 3416 error = vn_start_write(NULL, &mpw, V_WAIT); 3417 if (error != 0) { 3418 mpw = NULL; 3419 vfs_unbusy(mp); 3420 nd->nd_repstat = ESTALE; 3421 goto out; 3422 } 3423 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 3424 lktype = LK_EXCLUSIVE; 3425 } else 3426 mpw = NULL; 3427 3428 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 3429 &credanon); 3430 vfs_unbusy(mp); 3431 3432 /* 3433 * For NFSv4 without a pseudo root fs, unexported file handles 3434 * can be returned, so that Lookup works everywhere. 3435 */ 3436 if (!nd->nd_repstat && exp->nes_exflag == 0 && 3437 !(nd->nd_flag & ND_NFSV4)) { 3438 vput(*vpp); 3439 *vpp = NULL; 3440 nd->nd_repstat = EACCES; 3441 } 3442 3443 /* 3444 * Personally, I've never seen any point in requiring a 3445 * reserved port#, since only in the rare case where the 3446 * clients are all boxes with secure system privileges, 3447 * does it provide any enhanced security, but... some people 3448 * believe it to be useful and keep putting this code back in. 3449 * (There is also some "security checker" out there that 3450 * complains if the nfs server doesn't enforce this.) 3451 * However, note the following: 3452 * RFC3530 (NFSv4) specifies that a reserved port# not be 3453 * required. 3454 * RFC2623 recommends that, if a reserved port# is checked for, 3455 * that there be a way to turn that off--> ifdef'd. 3456 */ 3457 #ifdef NFS_REQRSVPORT 3458 if (!nd->nd_repstat) { 3459 struct sockaddr_in *saddr; 3460 struct sockaddr_in6 *saddr6; 3461 3462 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 3463 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 3464 if (!(nd->nd_flag & ND_NFSV4) && 3465 ((saddr->sin_family == AF_INET && 3466 ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 3467 (saddr6->sin6_family == AF_INET6 && 3468 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 3469 vput(*vpp); 3470 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 3471 } 3472 } 3473 #endif /* NFS_REQRSVPORT */ 3474 3475 /* 3476 * Check/setup credentials. 3477 */ 3478 if (!nd->nd_repstat) { 3479 nd->nd_saveduid = nd->nd_cred->cr_uid; 3480 nd->nd_repstat = nfsd_excred(nd, exp, credanon, 3481 nfsrv_checkwrongsec(nd, nextop, (*vpp)->v_type)); 3482 if (nd->nd_repstat) 3483 vput(*vpp); 3484 } 3485 if (credanon != NULL) 3486 crfree(credanon); 3487 if (nd->nd_repstat) { 3488 vn_finished_write(mpw); 3489 *vpp = NULL; 3490 } else if (mpp != NULL) { 3491 *mpp = mpw; 3492 } 3493 3494 out: 3495 NFSEXITCODE2(0, nd); 3496 } 3497 3498 /* 3499 * glue for fp. 3500 */ 3501 static int 3502 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 3503 { 3504 struct filedesc *fdp; 3505 struct file *fp; 3506 int error = 0; 3507 3508 fdp = p->td_proc->p_fd; 3509 if (fd < 0 || fd >= fdp->fd_nfiles || 3510 (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 3511 error = EBADF; 3512 goto out; 3513 } 3514 *fpp = fp; 3515 3516 out: 3517 NFSEXITCODE(error); 3518 return (error); 3519 } 3520 3521 /* 3522 * Called from nfssvc() to update the exports list. Just call 3523 * vfs_export(). This has to be done, since the v4 root fake fs isn't 3524 * in the mount list. 3525 */ 3526 int 3527 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 3528 { 3529 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 3530 int error = 0; 3531 struct nameidata nd; 3532 fhandle_t fh; 3533 3534 error = vfs_export(NFSD_VNET(nfsv4root_mnt), &nfsexargp->export, false); 3535 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 3536 NFSD_VNET(nfs_rootfhset) = 0; 3537 else if (error == 0) { 3538 if (nfsexargp->fspec == NULL) { 3539 error = EPERM; 3540 goto out; 3541 } 3542 /* 3543 * If fspec != NULL, this is the v4root path. 3544 */ 3545 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, nfsexargp->fspec); 3546 if ((error = namei(&nd)) != 0) 3547 goto out; 3548 error = nfsvno_getfh(nd.ni_vp, &fh, p); 3549 vrele(nd.ni_vp); 3550 if (!error) { 3551 NFSD_VNET(nfs_rootfh).nfsrvfh_len = NFSX_MYFH; 3552 NFSBCOPY((caddr_t)&fh, 3553 NFSD_VNET(nfs_rootfh).nfsrvfh_data, 3554 sizeof (fhandle_t)); 3555 NFSD_VNET(nfs_rootfhset) = 1; 3556 } 3557 } 3558 3559 out: 3560 NFSEXITCODE(error); 3561 return (error); 3562 } 3563 3564 /* 3565 * This function needs to test to see if the system is near its limit 3566 * for memory allocation via malloc() or mget() and return True iff 3567 * either of these resources are near their limit. 3568 * XXX (For now, this is just a stub.) 3569 */ 3570 int nfsrv_testmalloclimit = 0; 3571 int 3572 nfsrv_mallocmget_limit(void) 3573 { 3574 static int printmesg = 0; 3575 static int testval = 1; 3576 3577 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 3578 if ((printmesg++ % 100) == 0) 3579 printf("nfsd: malloc/mget near limit\n"); 3580 return (1); 3581 } 3582 return (0); 3583 } 3584 3585 /* 3586 * BSD specific initialization of a mount point. 3587 */ 3588 void 3589 nfsd_mntinit(void) 3590 { 3591 3592 NFSD_LOCK(); 3593 if (NFSD_VNET(nfsrv_mntinited)) { 3594 NFSD_UNLOCK(); 3595 return; 3596 } 3597 NFSD_VNET(nfsrv_mntinited) = true; 3598 nfsrvd_init(0); 3599 NFSD_UNLOCK(); 3600 3601 NFSD_VNET(nfsv4root_mnt) = malloc(sizeof(struct mount), M_TEMP, 3602 M_WAITOK | M_ZERO); 3603 NFSD_VNET(nfsv4root_mnt)->mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 3604 mtx_init(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx, "nfs4mnt", NULL, MTX_DEF); 3605 lockinit(&NFSD_VNET(nfsv4root_mnt)->mnt_explock, PVFS, "explock", 0, 0); 3606 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelist); 3607 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelist); 3608 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 3609 TAILQ_INIT(&NFSD_VNET(nfsv4root_opt)); 3610 TAILQ_INIT(&NFSD_VNET(nfsv4root_newopt)); 3611 NFSD_VNET(nfsv4root_mnt)->mnt_opt = &NFSD_VNET(nfsv4root_opt); 3612 NFSD_VNET(nfsv4root_mnt)->mnt_optnew = &NFSD_VNET(nfsv4root_newopt); 3613 NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelistsize = 0; 3614 NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelistsize = 0; 3615 callout_init(&NFSD_VNET(nfsd_callout), 1); 3616 3617 nfsrvd_initcache(); 3618 nfsd_init(); 3619 } 3620 3621 static void 3622 nfsd_timer(void *arg) 3623 { 3624 struct vnet *vnetp; 3625 3626 vnetp = (struct vnet *)arg; 3627 NFSD_CURVNET_SET_QUIET(vnetp); 3628 nfsrv_servertimer(vnetp); 3629 callout_reset_sbt(&NFSD_VNET(nfsd_callout), SBT_1S, SBT_1S, nfsd_timer, 3630 arg, 0); 3631 NFSD_CURVNET_RESTORE(); 3632 } 3633 3634 /* 3635 * Get a vnode for a file handle, without checking exports, etc. 3636 */ 3637 struct vnode * 3638 nfsvno_getvp(fhandle_t *fhp) 3639 { 3640 struct mount *mp; 3641 struct vnode *vp; 3642 int error; 3643 3644 mp = vfs_busyfs(&fhp->fh_fsid); 3645 if (mp == NULL) 3646 return (NULL); 3647 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 3648 vfs_unbusy(mp); 3649 if (error) 3650 return (NULL); 3651 return (vp); 3652 } 3653 3654 /* 3655 * Do a local VOP_ADVLOCK(). 3656 */ 3657 int 3658 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 3659 u_int64_t end, struct thread *td) 3660 { 3661 int error = 0; 3662 struct flock fl; 3663 u_int64_t tlen; 3664 3665 if (nfsrv_dolocallocks == 0) 3666 goto out; 3667 ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked"); 3668 3669 fl.l_whence = SEEK_SET; 3670 fl.l_type = ftype; 3671 fl.l_start = (off_t)first; 3672 if (end == NFS64BITSSET) { 3673 fl.l_len = 0; 3674 } else { 3675 tlen = end - first; 3676 fl.l_len = (off_t)tlen; 3677 } 3678 /* 3679 * For FreeBSD8, the l_pid and l_sysid must be set to the same 3680 * values for all calls, so that all locks will be held by the 3681 * nfsd server. (The nfsd server handles conflicts between the 3682 * various clients.) 3683 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 3684 * bytes, so it can't be put in l_sysid. 3685 */ 3686 if (nfsv4_sysid == 0) 3687 nfsv4_sysid = nlm_acquire_next_sysid(); 3688 fl.l_pid = (pid_t)0; 3689 fl.l_sysid = (int)nfsv4_sysid; 3690 3691 if (ftype == F_UNLCK) 3692 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3693 (F_POSIX | F_REMOTE)); 3694 else 3695 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3696 (F_POSIX | F_REMOTE)); 3697 3698 out: 3699 NFSEXITCODE(error); 3700 return (error); 3701 } 3702 3703 /* 3704 * Check the nfsv4 root exports. 3705 */ 3706 int 3707 nfsvno_v4rootexport(struct nfsrv_descript *nd) 3708 { 3709 struct ucred *credanon; 3710 int error = 0, numsecflavor, secflavors[MAXSECFLAVORS], i; 3711 uint64_t exflags; 3712 3713 error = vfs_stdcheckexp(NFSD_VNET(nfsv4root_mnt), nd->nd_nam, &exflags, 3714 &credanon, &numsecflavor, secflavors); 3715 if (error) { 3716 error = NFSERR_PROGUNAVAIL; 3717 goto out; 3718 } 3719 if (credanon != NULL) 3720 crfree(credanon); 3721 for (i = 0; i < numsecflavor; i++) { 3722 if (secflavors[i] == AUTH_SYS) 3723 nd->nd_flag |= ND_EXAUTHSYS; 3724 else if (secflavors[i] == RPCSEC_GSS_KRB5) 3725 nd->nd_flag |= ND_EXGSS; 3726 else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3727 nd->nd_flag |= ND_EXGSSINTEGRITY; 3728 else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3729 nd->nd_flag |= ND_EXGSSPRIVACY; 3730 } 3731 3732 /* And set ND_EXxx flags for TLS. */ 3733 if ((exflags & MNT_EXTLS) != 0) { 3734 nd->nd_flag |= ND_EXTLS; 3735 if ((exflags & MNT_EXTLSCERT) != 0) 3736 nd->nd_flag |= ND_EXTLSCERT; 3737 if ((exflags & MNT_EXTLSCERTUSER) != 0) 3738 nd->nd_flag |= ND_EXTLSCERTUSER; 3739 } 3740 3741 out: 3742 NFSEXITCODE(error); 3743 return (error); 3744 } 3745 3746 /* 3747 * Nfs server pseudo system call for the nfsd's 3748 */ 3749 /* 3750 * MPSAFE 3751 */ 3752 static int 3753 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3754 { 3755 struct file *fp; 3756 struct nfsd_addsock_args sockarg; 3757 struct nfsd_nfsd_args nfsdarg; 3758 struct nfsd_nfsd_oargs onfsdarg; 3759 struct nfsd_pnfsd_args pnfsdarg; 3760 struct vnode *vp, *nvp, *curdvp; 3761 struct pnfsdsfile *pf; 3762 struct nfsdevice *ds, *fds; 3763 cap_rights_t rights; 3764 int buflen, error, ret; 3765 char *buf, *cp, *cp2, *cp3; 3766 char fname[PNFS_FILENAME_LEN + 1]; 3767 3768 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td)); 3769 if (uap->flag & NFSSVC_NFSDADDSOCK) { 3770 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3771 if (error) 3772 goto out; 3773 /* 3774 * Since we don't know what rights might be required, 3775 * pretend that we need them all. It is better to be too 3776 * careful than too reckless. 3777 */ 3778 error = fget(td, sockarg.sock, 3779 cap_rights_init_one(&rights, CAP_SOCK_SERVER), &fp); 3780 if (error != 0) 3781 goto out; 3782 if (fp->f_type != DTYPE_SOCKET) { 3783 fdrop(fp, td); 3784 error = EPERM; 3785 goto out; 3786 } 3787 error = nfsrvd_addsock(fp); 3788 fdrop(fp, td); 3789 } else if (uap->flag & NFSSVC_NFSDNFSD) { 3790 if (uap->argp == NULL) { 3791 error = EINVAL; 3792 goto out; 3793 } 3794 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 3795 error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg)); 3796 if (error == 0) { 3797 nfsdarg.principal = onfsdarg.principal; 3798 nfsdarg.minthreads = onfsdarg.minthreads; 3799 nfsdarg.maxthreads = onfsdarg.maxthreads; 3800 nfsdarg.version = 1; 3801 nfsdarg.addr = NULL; 3802 nfsdarg.addrlen = 0; 3803 nfsdarg.dnshost = NULL; 3804 nfsdarg.dnshostlen = 0; 3805 nfsdarg.dspath = NULL; 3806 nfsdarg.dspathlen = 0; 3807 nfsdarg.mdspath = NULL; 3808 nfsdarg.mdspathlen = 0; 3809 nfsdarg.mirrorcnt = 1; 3810 } 3811 } else 3812 error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg)); 3813 if (error) 3814 goto out; 3815 if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 && 3816 nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 && 3817 nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 && 3818 nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 && 3819 nfsdarg.mirrorcnt >= 1 && 3820 nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS && 3821 nfsdarg.addr != NULL && nfsdarg.dnshost != NULL && 3822 nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) { 3823 NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d" 3824 " mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen, 3825 nfsdarg.dspathlen, nfsdarg.dnshostlen, 3826 nfsdarg.mdspathlen, nfsdarg.mirrorcnt); 3827 cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK); 3828 error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen); 3829 if (error != 0) { 3830 free(cp, M_TEMP); 3831 goto out; 3832 } 3833 cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */ 3834 nfsdarg.addr = cp; 3835 cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK); 3836 error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen); 3837 if (error != 0) { 3838 free(nfsdarg.addr, M_TEMP); 3839 free(cp, M_TEMP); 3840 goto out; 3841 } 3842 cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */ 3843 nfsdarg.dnshost = cp; 3844 cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK); 3845 error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen); 3846 if (error != 0) { 3847 free(nfsdarg.addr, M_TEMP); 3848 free(nfsdarg.dnshost, M_TEMP); 3849 free(cp, M_TEMP); 3850 goto out; 3851 } 3852 cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */ 3853 nfsdarg.dspath = cp; 3854 cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK); 3855 error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen); 3856 if (error != 0) { 3857 free(nfsdarg.addr, M_TEMP); 3858 free(nfsdarg.dnshost, M_TEMP); 3859 free(nfsdarg.dspath, M_TEMP); 3860 free(cp, M_TEMP); 3861 goto out; 3862 } 3863 cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */ 3864 nfsdarg.mdspath = cp; 3865 } else { 3866 nfsdarg.addr = NULL; 3867 nfsdarg.addrlen = 0; 3868 nfsdarg.dnshost = NULL; 3869 nfsdarg.dnshostlen = 0; 3870 nfsdarg.dspath = NULL; 3871 nfsdarg.dspathlen = 0; 3872 nfsdarg.mdspath = NULL; 3873 nfsdarg.mdspathlen = 0; 3874 nfsdarg.mirrorcnt = 1; 3875 } 3876 nfsd_timer(NFSD_TD_TO_VNET(td)); 3877 error = nfsrvd_nfsd(td, &nfsdarg); 3878 callout_drain(&NFSD_VNET(nfsd_callout)); 3879 free(nfsdarg.addr, M_TEMP); 3880 free(nfsdarg.dnshost, M_TEMP); 3881 free(nfsdarg.dspath, M_TEMP); 3882 free(nfsdarg.mdspath, M_TEMP); 3883 } else if (uap->flag & NFSSVC_PNFSDS) { 3884 error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg)); 3885 if (error == 0 && (pnfsdarg.op == PNFSDOP_DELDSSERVER || 3886 pnfsdarg.op == PNFSDOP_FORCEDELDS)) { 3887 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3888 error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1, 3889 NULL); 3890 if (error == 0) 3891 error = nfsrv_deldsserver(pnfsdarg.op, cp, td); 3892 free(cp, M_TEMP); 3893 } else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) { 3894 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3895 buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS; 3896 buf = malloc(buflen, M_TEMP, M_WAITOK); 3897 error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1, 3898 NULL); 3899 NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error); 3900 if (error == 0 && pnfsdarg.dspath != NULL) { 3901 cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3902 error = copyinstr(pnfsdarg.dspath, cp2, 3903 PATH_MAX + 1, NULL); 3904 NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n", 3905 error); 3906 } else 3907 cp2 = NULL; 3908 if (error == 0 && pnfsdarg.curdspath != NULL) { 3909 cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 3910 error = copyinstr(pnfsdarg.curdspath, cp3, 3911 PATH_MAX + 1, NULL); 3912 NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n", 3913 error); 3914 } else 3915 cp3 = NULL; 3916 curdvp = NULL; 3917 fds = NULL; 3918 if (error == 0) 3919 error = nfsrv_mdscopymr(cp, cp2, cp3, buf, 3920 &buflen, fname, td, &vp, &nvp, &pf, &ds, 3921 &fds); 3922 NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error); 3923 if (error == 0) { 3924 if (pf->dsf_dir >= nfsrv_dsdirsize) { 3925 printf("copymr: dsdir out of range\n"); 3926 pf->dsf_dir = 0; 3927 } 3928 NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen); 3929 error = nfsrv_copymr(vp, nvp, 3930 ds->nfsdev_dsdir[pf->dsf_dir], ds, pf, 3931 (struct pnfsdsfile *)buf, 3932 buflen / sizeof(*pf), td->td_ucred, td); 3933 vput(vp); 3934 vput(nvp); 3935 if (fds != NULL && error == 0) { 3936 curdvp = fds->nfsdev_dsdir[pf->dsf_dir]; 3937 ret = vn_lock(curdvp, LK_EXCLUSIVE); 3938 if (ret == 0) { 3939 nfsrv_dsremove(curdvp, fname, 3940 td->td_ucred, td); 3941 NFSVOPUNLOCK(curdvp); 3942 } 3943 } 3944 NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error); 3945 } 3946 free(cp, M_TEMP); 3947 free(cp2, M_TEMP); 3948 free(cp3, M_TEMP); 3949 free(buf, M_TEMP); 3950 } 3951 } else { 3952 error = nfssvc_srvcall(td, uap, td->td_ucred); 3953 } 3954 3955 out: 3956 NFSD_CURVNET_RESTORE(); 3957 NFSEXITCODE(error); 3958 return (error); 3959 } 3960 3961 static int 3962 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3963 { 3964 struct nfsex_args export; 3965 struct nfsex_oldargs oexp; 3966 struct file *fp = NULL; 3967 int stablefd, i, len; 3968 struct nfsd_clid adminrevoke; 3969 struct nfsd_dumplist dumplist; 3970 struct nfsd_dumpclients *dumpclients; 3971 struct nfsd_dumplocklist dumplocklist; 3972 struct nfsd_dumplocks *dumplocks; 3973 struct nameidata nd; 3974 vnode_t vp; 3975 int error = EINVAL, igotlock; 3976 struct proc *procp; 3977 gid_t *grps; 3978 3979 if (uap->flag & NFSSVC_PUBLICFH) { 3980 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3981 sizeof (fhandle_t)); 3982 error = copyin(uap->argp, 3983 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3984 if (!error) 3985 nfs_pubfhset = 1; 3986 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 3987 (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) { 3988 error = copyin(uap->argp,(caddr_t)&export, 3989 sizeof (struct nfsex_args)); 3990 if (!error) { 3991 grps = NULL; 3992 if (export.export.ex_ngroups > NGROUPS_MAX || 3993 export.export.ex_ngroups < 0) 3994 error = EINVAL; 3995 else if (export.export.ex_ngroups > 0) { 3996 grps = malloc(export.export.ex_ngroups * 3997 sizeof(gid_t), M_TEMP, M_WAITOK); 3998 error = copyin(export.export.ex_groups, grps, 3999 export.export.ex_ngroups * sizeof(gid_t)); 4000 export.export.ex_groups = grps; 4001 } else 4002 export.export.ex_groups = NULL; 4003 if (!error) 4004 error = nfsrv_v4rootexport(&export, cred, p); 4005 free(grps, M_TEMP); 4006 } 4007 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 4008 NFSSVC_V4ROOTEXPORT) { 4009 error = copyin(uap->argp,(caddr_t)&oexp, 4010 sizeof (struct nfsex_oldargs)); 4011 if (!error) { 4012 memset(&export.export, 0, sizeof(export.export)); 4013 export.export.ex_flags = (uint64_t)oexp.export.ex_flags; 4014 export.export.ex_root = oexp.export.ex_root; 4015 export.export.ex_uid = oexp.export.ex_anon.cr_uid; 4016 export.export.ex_ngroups = 4017 oexp.export.ex_anon.cr_ngroups; 4018 export.export.ex_groups = NULL; 4019 if (export.export.ex_ngroups > XU_NGROUPS || 4020 export.export.ex_ngroups < 0) 4021 error = EINVAL; 4022 else if (export.export.ex_ngroups > 0) { 4023 export.export.ex_groups = malloc( 4024 export.export.ex_ngroups * sizeof(gid_t), 4025 M_TEMP, M_WAITOK); 4026 for (i = 0; i < export.export.ex_ngroups; i++) 4027 export.export.ex_groups[i] = 4028 oexp.export.ex_anon.cr_groups[i]; 4029 } 4030 export.export.ex_addr = oexp.export.ex_addr; 4031 export.export.ex_addrlen = oexp.export.ex_addrlen; 4032 export.export.ex_mask = oexp.export.ex_mask; 4033 export.export.ex_masklen = oexp.export.ex_masklen; 4034 export.export.ex_indexfile = oexp.export.ex_indexfile; 4035 export.export.ex_numsecflavors = 4036 oexp.export.ex_numsecflavors; 4037 if (export.export.ex_numsecflavors >= MAXSECFLAVORS || 4038 export.export.ex_numsecflavors < 0) 4039 error = EINVAL; 4040 else { 4041 for (i = 0; i < export.export.ex_numsecflavors; 4042 i++) 4043 export.export.ex_secflavors[i] = 4044 oexp.export.ex_secflavors[i]; 4045 } 4046 export.fspec = oexp.fspec; 4047 if (error == 0) 4048 error = nfsrv_v4rootexport(&export, cred, p); 4049 free(export.export.ex_groups, M_TEMP); 4050 } 4051 } else if (uap->flag & NFSSVC_NOPUBLICFH) { 4052 nfs_pubfhset = 0; 4053 error = 0; 4054 } else if (uap->flag & NFSSVC_STABLERESTART) { 4055 error = copyin(uap->argp, (caddr_t)&stablefd, 4056 sizeof (int)); 4057 if (!error) 4058 error = fp_getfvp(p, stablefd, &fp, &vp); 4059 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 4060 error = EBADF; 4061 if (!error && NFSD_VNET(nfsrv_numnfsd) != 0) 4062 error = ENXIO; 4063 if (!error) { 4064 NFSD_VNET(nfsrv_stablefirst).nsf_fp = fp; 4065 nfsrv_setupstable(p); 4066 } 4067 } else if (uap->flag & NFSSVC_ADMINREVOKE) { 4068 error = copyin(uap->argp, (caddr_t)&adminrevoke, 4069 sizeof (struct nfsd_clid)); 4070 if (!error) 4071 error = nfsrv_adminrevoke(&adminrevoke, p); 4072 } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 4073 error = copyin(uap->argp, (caddr_t)&dumplist, 4074 sizeof (struct nfsd_dumplist)); 4075 if (!error && (dumplist.ndl_size < 1 || 4076 dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 4077 error = EPERM; 4078 if (!error) { 4079 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 4080 dumpclients = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4081 nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 4082 error = copyout(dumpclients, dumplist.ndl_list, len); 4083 free(dumpclients, M_TEMP); 4084 } 4085 } else if (uap->flag & NFSSVC_DUMPLOCKS) { 4086 error = copyin(uap->argp, (caddr_t)&dumplocklist, 4087 sizeof (struct nfsd_dumplocklist)); 4088 if (!error && (dumplocklist.ndllck_size < 1 || 4089 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 4090 error = EPERM; 4091 if (!error) 4092 error = nfsrv_lookupfilename(&nd, 4093 dumplocklist.ndllck_fname, p); 4094 if (!error) { 4095 len = sizeof (struct nfsd_dumplocks) * 4096 dumplocklist.ndllck_size; 4097 dumplocks = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4098 nfsrv_dumplocks(nd.ni_vp, dumplocks, 4099 dumplocklist.ndllck_size, p); 4100 vput(nd.ni_vp); 4101 error = copyout(dumplocks, dumplocklist.ndllck_list, 4102 len); 4103 free(dumplocks, M_TEMP); 4104 } 4105 } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 4106 procp = p->td_proc; 4107 PROC_LOCK(procp); 4108 nfsd_master_pid = procp->p_pid; 4109 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 4110 nfsd_master_start = procp->p_stats->p_start; 4111 NFSD_VNET(nfsd_master_proc) = procp; 4112 PROC_UNLOCK(procp); 4113 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 4114 NFSLOCKV4ROOTMUTEX(); 4115 if (!NFSD_VNET(nfsrv_suspend_nfsd)) { 4116 /* Lock out all nfsd threads */ 4117 do { 4118 igotlock = nfsv4_lock( 4119 &NFSD_VNET(nfsd_suspend_lock), 1, NULL, 4120 NFSV4ROOTLOCKMUTEXPTR, NULL); 4121 } while (igotlock == 0 && 4122 !NFSD_VNET(nfsrv_suspend_nfsd)); 4123 NFSD_VNET(nfsrv_suspend_nfsd) = true; 4124 } 4125 NFSUNLOCKV4ROOTMUTEX(); 4126 error = 0; 4127 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 4128 NFSLOCKV4ROOTMUTEX(); 4129 if (NFSD_VNET(nfsrv_suspend_nfsd)) { 4130 nfsv4_unlock(&NFSD_VNET(nfsd_suspend_lock), 0); 4131 NFSD_VNET(nfsrv_suspend_nfsd) = false; 4132 } 4133 NFSUNLOCKV4ROOTMUTEX(); 4134 error = 0; 4135 } 4136 4137 NFSEXITCODE(error); 4138 return (error); 4139 } 4140 4141 /* 4142 * Check exports. 4143 * Returns 0 if ok, 1 otherwise. 4144 */ 4145 int 4146 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 4147 { 4148 int i; 4149 4150 if ((NFSVNO_EXTLS(exp) && (nd->nd_flag & ND_TLS) == 0) || 4151 (NFSVNO_EXTLSCERT(exp) && 4152 (nd->nd_flag & ND_TLSCERT) == 0) || 4153 (NFSVNO_EXTLSCERTUSER(exp) && 4154 (nd->nd_flag & ND_TLSCERTUSER) == 0)) { 4155 if ((nd->nd_flag & ND_NFSV4) != 0) 4156 return (NFSERR_WRONGSEC); 4157 #ifdef notnow 4158 /* There is currently no auth_stat for this. */ 4159 else if ((nd->nd_flag & ND_TLS) == 0) 4160 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS); 4161 else 4162 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS_MUTUAL_HOST); 4163 #endif 4164 else 4165 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4166 } 4167 4168 /* 4169 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to use 4170 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 4171 */ 4172 if ((nd->nd_flag & ND_NFSV3) != 0 && nd->nd_procnum == NFSPROC_FSINFO) 4173 return (0); 4174 4175 /* 4176 * This seems odd, but allow the case where the security flavor 4177 * list is empty. This happens when NFSv4 is traversing non-exported 4178 * file systems. Exported file systems should always have a non-empty 4179 * security flavor list. 4180 */ 4181 if (exp->nes_numsecflavor == 0) 4182 return (0); 4183 4184 for (i = 0; i < exp->nes_numsecflavor; i++) { 4185 /* 4186 * The tests for privacy and integrity must be first, 4187 * since ND_GSS is set for everything but AUTH_SYS. 4188 */ 4189 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 4190 (nd->nd_flag & ND_GSSPRIVACY)) 4191 return (0); 4192 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 4193 (nd->nd_flag & ND_GSSINTEGRITY)) 4194 return (0); 4195 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 4196 (nd->nd_flag & ND_GSS)) 4197 return (0); 4198 if (exp->nes_secflavors[i] == AUTH_SYS && 4199 (nd->nd_flag & ND_GSS) == 0) 4200 return (0); 4201 } 4202 if ((nd->nd_flag & ND_NFSV4) != 0) 4203 return (NFSERR_WRONGSEC); 4204 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4205 } 4206 4207 /* 4208 * Calculate a hash value for the fid in a file handle. 4209 */ 4210 uint32_t 4211 nfsrv_hashfh(fhandle_t *fhp) 4212 { 4213 uint32_t hashval; 4214 4215 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 4216 return (hashval); 4217 } 4218 4219 /* 4220 * Calculate a hash value for the sessionid. 4221 */ 4222 uint32_t 4223 nfsrv_hashsessionid(uint8_t *sessionid) 4224 { 4225 uint32_t hashval; 4226 4227 hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); 4228 return (hashval); 4229 } 4230 4231 /* 4232 * Signal the userland master nfsd to backup the stable restart file. 4233 */ 4234 void 4235 nfsrv_backupstable(void) 4236 { 4237 struct proc *procp; 4238 4239 if (NFSD_VNET(nfsd_master_proc) != NULL) { 4240 procp = pfind(nfsd_master_pid); 4241 /* Try to make sure it is the correct process. */ 4242 if (procp == NFSD_VNET(nfsd_master_proc) && 4243 procp->p_stats->p_start.tv_sec == 4244 nfsd_master_start.tv_sec && 4245 procp->p_stats->p_start.tv_usec == 4246 nfsd_master_start.tv_usec && 4247 strcmp(procp->p_comm, nfsd_master_comm) == 0) 4248 kern_psignal(procp, SIGUSR2); 4249 else 4250 NFSD_VNET(nfsd_master_proc) = NULL; 4251 4252 if (procp != NULL) 4253 PROC_UNLOCK(procp); 4254 } 4255 } 4256 4257 /* 4258 * Create a DS data file for nfsrv_pnfscreate(). Called for each mirror. 4259 * The arguments are in a structure, so that they can be passed through 4260 * taskqueue for a kernel process to execute this function. 4261 */ 4262 struct nfsrvdscreate { 4263 int done; 4264 int inprog; 4265 struct task tsk; 4266 struct ucred *tcred; 4267 struct vnode *dvp; 4268 NFSPROC_T *p; 4269 struct pnfsdsfile *pf; 4270 int err; 4271 fhandle_t fh; 4272 struct vattr va; 4273 struct vattr createva; 4274 }; 4275 4276 int 4277 nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap, 4278 fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa, 4279 char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp) 4280 { 4281 struct vnode *nvp; 4282 struct nameidata named; 4283 struct vattr va; 4284 char *bufp; 4285 u_long *hashp; 4286 struct nfsnode *np; 4287 struct nfsmount *nmp; 4288 int error; 4289 4290 NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE, 4291 LOCKPARENT | LOCKLEAF | NOCACHE); 4292 nfsvno_setpathbuf(&named, &bufp, &hashp); 4293 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE; 4294 named.ni_cnd.cn_nameptr = bufp; 4295 if (fnamep != NULL) { 4296 strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1); 4297 named.ni_cnd.cn_namelen = strlen(bufp); 4298 } else 4299 named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp); 4300 NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp); 4301 4302 /* Create the date file in the DS mount. */ 4303 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4304 if (error == 0) { 4305 error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap); 4306 vref(dvp); 4307 VOP_VPUT_PAIR(dvp, error == 0 ? &nvp : NULL, false); 4308 if (error == 0) { 4309 /* Set the ownership of the file. */ 4310 error = VOP_SETATTR(nvp, nvap, tcred); 4311 NFSD_DEBUG(4, "nfsrv_dscreate:" 4312 " setattr-uid=%d\n", error); 4313 if (error != 0) 4314 vput(nvp); 4315 } 4316 if (error != 0) 4317 printf("pNFS: pnfscreate failed=%d\n", error); 4318 } else 4319 printf("pNFS: pnfscreate vnlock=%d\n", error); 4320 if (error == 0) { 4321 np = VTONFS(nvp); 4322 nmp = VFSTONFS(nvp->v_mount); 4323 if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs") 4324 != 0 || nmp->nm_nam->sa_len > sizeof( 4325 struct sockaddr_in6) || 4326 np->n_fhp->nfh_len != NFSX_MYFH) { 4327 printf("Bad DS file: fstype=%s salen=%d" 4328 " fhlen=%d\n", 4329 nvp->v_mount->mnt_vfc->vfc_name, 4330 nmp->nm_nam->sa_len, np->n_fhp->nfh_len); 4331 error = ENOENT; 4332 } 4333 4334 /* Set extattrs for the DS on the MDS file. */ 4335 if (error == 0) { 4336 if (dsa != NULL) { 4337 error = VOP_GETATTR(nvp, &va, tcred); 4338 if (error == 0) { 4339 dsa->dsa_filerev = va.va_filerev; 4340 dsa->dsa_size = va.va_size; 4341 dsa->dsa_atime = va.va_atime; 4342 dsa->dsa_mtime = va.va_mtime; 4343 dsa->dsa_bytes = va.va_bytes; 4344 } 4345 } 4346 if (error == 0) { 4347 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, 4348 NFSX_MYFH); 4349 NFSBCOPY(nmp->nm_nam, &pf->dsf_sin, 4350 nmp->nm_nam->sa_len); 4351 NFSBCOPY(named.ni_cnd.cn_nameptr, 4352 pf->dsf_filename, 4353 sizeof(pf->dsf_filename)); 4354 } 4355 } else 4356 printf("pNFS: pnfscreate can't get DS" 4357 " attr=%d\n", error); 4358 if (nvpp != NULL && error == 0) 4359 *nvpp = nvp; 4360 else 4361 vput(nvp); 4362 } 4363 nfsvno_relpathbuf(&named); 4364 return (error); 4365 } 4366 4367 /* 4368 * Start up the thread that will execute nfsrv_dscreate(). 4369 */ 4370 static void 4371 start_dscreate(void *arg, int pending) 4372 { 4373 struct nfsrvdscreate *dsc; 4374 4375 dsc = (struct nfsrvdscreate *)arg; 4376 dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh, 4377 dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL); 4378 dsc->done = 1; 4379 NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err); 4380 } 4381 4382 /* 4383 * Create a pNFS data file on the Data Server(s). 4384 */ 4385 static void 4386 nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred, 4387 NFSPROC_T *p) 4388 { 4389 struct nfsrvdscreate *dsc, *tdsc = NULL; 4390 struct nfsdevice *ds, *tds, *fds; 4391 struct mount *mp; 4392 struct pnfsdsfile *pf, *tpf; 4393 struct pnfsdsattr dsattr; 4394 struct vattr va; 4395 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4396 struct nfsmount *nmp; 4397 fhandle_t fh; 4398 uid_t vauid; 4399 gid_t vagid; 4400 u_short vamode; 4401 struct ucred *tcred; 4402 int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret; 4403 int failpos, timo; 4404 4405 /* Get a DS server directory in a round-robin order. */ 4406 mirrorcnt = 1; 4407 mp = vp->v_mount; 4408 ds = fds = NULL; 4409 NFSDDSLOCK(); 4410 /* 4411 * Search for the first entry that handles this MDS fs, but use the 4412 * first entry for all MDS fs's otherwise. 4413 */ 4414 TAILQ_FOREACH(tds, &nfsrv_devidhead, nfsdev_list) { 4415 if (tds->nfsdev_nmp != NULL) { 4416 if (tds->nfsdev_mdsisset == 0 && ds == NULL) 4417 ds = tds; 4418 else if (tds->nfsdev_mdsisset != 0 && fsidcmp( 4419 &mp->mnt_stat.f_fsid, &tds->nfsdev_mdsfsid) == 0) { 4420 ds = fds = tds; 4421 break; 4422 } 4423 } 4424 } 4425 if (ds == NULL) { 4426 NFSDDSUNLOCK(); 4427 NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n"); 4428 return; 4429 } 4430 i = dsdir[0] = ds->nfsdev_nextdir; 4431 ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize; 4432 dvp[0] = ds->nfsdev_dsdir[i]; 4433 tds = TAILQ_NEXT(ds, nfsdev_list); 4434 if (nfsrv_maxpnfsmirror > 1 && tds != NULL) { 4435 TAILQ_FOREACH_FROM(tds, &nfsrv_devidhead, nfsdev_list) { 4436 if (tds->nfsdev_nmp != NULL && 4437 ((tds->nfsdev_mdsisset == 0 && fds == NULL) || 4438 (tds->nfsdev_mdsisset != 0 && fds != NULL && 4439 fsidcmp(&mp->mnt_stat.f_fsid, 4440 &tds->nfsdev_mdsfsid) == 0))) { 4441 dsdir[mirrorcnt] = i; 4442 dvp[mirrorcnt] = tds->nfsdev_dsdir[i]; 4443 mirrorcnt++; 4444 if (mirrorcnt >= nfsrv_maxpnfsmirror) 4445 break; 4446 } 4447 } 4448 } 4449 /* Put at end of list to implement round-robin usage. */ 4450 TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list); 4451 TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list); 4452 NFSDDSUNLOCK(); 4453 dsc = NULL; 4454 if (mirrorcnt > 1) 4455 tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP, 4456 M_WAITOK | M_ZERO); 4457 tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK | 4458 M_ZERO); 4459 4460 error = nfsvno_getfh(vp, &fh, p); 4461 if (error == 0) 4462 error = VOP_GETATTR(vp, &va, cred); 4463 if (error == 0) { 4464 /* Set the attributes for "vp" to Setattr the DS vp. */ 4465 vauid = va.va_uid; 4466 vagid = va.va_gid; 4467 vamode = va.va_mode; 4468 VATTR_NULL(&va); 4469 va.va_uid = vauid; 4470 va.va_gid = vagid; 4471 va.va_mode = vamode; 4472 va.va_size = 0; 4473 } else 4474 printf("pNFS: pnfscreate getfh+attr=%d\n", error); 4475 4476 NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid, 4477 cred->cr_gid); 4478 /* Make data file name based on FH. */ 4479 tcred = newnfs_getcred(); 4480 4481 /* 4482 * Create the file on each DS mirror, using kernel process(es) for the 4483 * additional mirrors. 4484 */ 4485 failpos = -1; 4486 for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) { 4487 tpf->dsf_dir = dsdir[i]; 4488 tdsc->tcred = tcred; 4489 tdsc->p = p; 4490 tdsc->pf = tpf; 4491 tdsc->createva = *vap; 4492 NFSBCOPY(&fh, &tdsc->fh, sizeof(fh)); 4493 tdsc->va = va; 4494 tdsc->dvp = dvp[i]; 4495 tdsc->done = 0; 4496 tdsc->inprog = 0; 4497 tdsc->err = 0; 4498 ret = EIO; 4499 if (nfs_pnfsiothreads != 0) { 4500 ret = nfs_pnfsio(start_dscreate, tdsc); 4501 NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret); 4502 } 4503 if (ret != 0) { 4504 ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL, 4505 NULL, tcred, p, NULL); 4506 if (ret != 0) { 4507 KASSERT(error == 0, ("nfsrv_dscreate err=%d", 4508 error)); 4509 if (failpos == -1 && nfsds_failerr(ret)) 4510 failpos = i; 4511 else 4512 error = ret; 4513 } 4514 } 4515 } 4516 if (error == 0) { 4517 tpf->dsf_dir = dsdir[mirrorcnt - 1]; 4518 error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf, 4519 &dsattr, NULL, tcred, p, NULL); 4520 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) { 4521 failpos = mirrorcnt - 1; 4522 error = 0; 4523 } 4524 } 4525 timo = hz / 50; /* Wait for 20msec. */ 4526 if (timo < 1) 4527 timo = 1; 4528 /* Wait for kernel task(s) to complete. */ 4529 for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) { 4530 while (tdsc->inprog != 0 && tdsc->done == 0) 4531 tsleep(&tdsc->tsk, PVFS, "srvdcr", timo); 4532 if (tdsc->err != 0) { 4533 if (failpos == -1 && nfsds_failerr(tdsc->err)) 4534 failpos = i; 4535 else if (error == 0) 4536 error = tdsc->err; 4537 } 4538 } 4539 4540 /* 4541 * If failpos has been set, that mirror has failed, so it needs 4542 * to be disabled. 4543 */ 4544 if (failpos >= 0) { 4545 nmp = VFSTONFS(dvp[failpos]->v_mount); 4546 NFSLOCKMNT(nmp); 4547 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4548 NFSMNTP_CANCELRPCS)) == 0) { 4549 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4550 NFSUNLOCKMNT(nmp); 4551 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4552 NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos, 4553 ds); 4554 if (ds != NULL) 4555 nfsrv_killrpcs(nmp); 4556 NFSLOCKMNT(nmp); 4557 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4558 wakeup(nmp); 4559 } 4560 NFSUNLOCKMNT(nmp); 4561 } 4562 4563 NFSFREECRED(tcred); 4564 if (error == 0) { 4565 ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp"); 4566 4567 NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n", 4568 mirrorcnt, nfsrv_maxpnfsmirror); 4569 /* 4570 * For all mirrors that couldn't be created, fill in the 4571 * *pf structure, but with an IP address == 0.0.0.0. 4572 */ 4573 tpf = pf + mirrorcnt; 4574 for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) { 4575 *tpf = *pf; 4576 tpf->dsf_sin.sin_family = AF_INET; 4577 tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in); 4578 tpf->dsf_sin.sin_addr.s_addr = 0; 4579 tpf->dsf_sin.sin_port = 0; 4580 } 4581 4582 error = vn_extattr_set(vp, IO_NODELOCKED, 4583 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", 4584 sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p); 4585 if (error == 0) 4586 error = vn_extattr_set(vp, IO_NODELOCKED, 4587 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", 4588 sizeof(dsattr), (char *)&dsattr, p); 4589 if (error != 0) 4590 printf("pNFS: pnfscreate setextattr=%d\n", 4591 error); 4592 } else 4593 printf("pNFS: pnfscreate=%d\n", error); 4594 free(pf, M_TEMP); 4595 free(dsc, M_TEMP); 4596 } 4597 4598 /* 4599 * Get the information needed to remove the pNFS Data Server file from the 4600 * Metadata file. Upon success, ddvp is set non-NULL to the locked 4601 * DS directory vnode. The caller must unlock *ddvp when done with it. 4602 */ 4603 static void 4604 nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp, 4605 int *mirrorcntp, char *fname, fhandle_t *fhp) 4606 { 4607 struct vattr va; 4608 struct ucred *tcred; 4609 char *buf; 4610 int buflen, error; 4611 4612 dvpp[0] = NULL; 4613 /* If not an exported regular file or not a pNFS server, just return. */ 4614 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4615 nfsrv_devidcnt == 0) 4616 return; 4617 4618 /* Check to see if this is the last hard link. */ 4619 tcred = newnfs_getcred(); 4620 error = VOP_GETATTR(vp, &va, tcred); 4621 NFSFREECRED(tcred); 4622 if (error != 0) { 4623 printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error); 4624 return; 4625 } 4626 if (va.va_nlink > 1) 4627 return; 4628 4629 error = nfsvno_getfh(vp, fhp, p); 4630 if (error != 0) { 4631 printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error); 4632 return; 4633 } 4634 4635 buflen = 1024; 4636 buf = malloc(buflen, M_TEMP, M_WAITOK); 4637 /* Get the directory vnode for the DS mount and the file handle. */ 4638 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp, 4639 NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL); 4640 free(buf, M_TEMP); 4641 if (error != 0) 4642 printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error); 4643 } 4644 4645 /* 4646 * Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror. 4647 * The arguments are in a structure, so that they can be passed through 4648 * taskqueue for a kernel process to execute this function. 4649 */ 4650 struct nfsrvdsremove { 4651 int done; 4652 int inprog; 4653 struct task tsk; 4654 struct ucred *tcred; 4655 struct vnode *dvp; 4656 NFSPROC_T *p; 4657 int err; 4658 char fname[PNFS_FILENAME_LEN + 1]; 4659 }; 4660 4661 static int 4662 nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred, 4663 NFSPROC_T *p) 4664 { 4665 struct nameidata named; 4666 struct vnode *nvp; 4667 char *bufp; 4668 u_long *hashp; 4669 int error; 4670 4671 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4672 if (error != 0) 4673 return (error); 4674 named.ni_cnd.cn_nameiop = DELETE; 4675 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 4676 named.ni_cnd.cn_cred = tcred; 4677 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 4678 nfsvno_setpathbuf(&named, &bufp, &hashp); 4679 named.ni_cnd.cn_nameptr = bufp; 4680 named.ni_cnd.cn_namelen = strlen(fname); 4681 strlcpy(bufp, fname, NAME_MAX); 4682 NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp); 4683 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 4684 NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error); 4685 if (error == 0) { 4686 error = VOP_REMOVE(dvp, nvp, &named.ni_cnd); 4687 vput(nvp); 4688 } 4689 NFSVOPUNLOCK(dvp); 4690 nfsvno_relpathbuf(&named); 4691 if (error != 0) 4692 printf("pNFS: nfsrv_pnfsremove failed=%d\n", error); 4693 return (error); 4694 } 4695 4696 /* 4697 * Start up the thread that will execute nfsrv_dsremove(). 4698 */ 4699 static void 4700 start_dsremove(void *arg, int pending) 4701 { 4702 struct nfsrvdsremove *dsrm; 4703 4704 dsrm = (struct nfsrvdsremove *)arg; 4705 dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred, 4706 dsrm->p); 4707 dsrm->done = 1; 4708 NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err); 4709 } 4710 4711 /* 4712 * Remove a pNFS data file from a Data Server. 4713 * nfsrv_pnfsremovesetup() must have been called before the MDS file was 4714 * removed to set up the dvp and fill in the FH. 4715 */ 4716 static void 4717 nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp, 4718 NFSPROC_T *p) 4719 { 4720 struct ucred *tcred; 4721 struct nfsrvdsremove *dsrm, *tdsrm; 4722 struct nfsdevice *ds; 4723 struct nfsmount *nmp; 4724 int failpos, i, ret, timo; 4725 4726 tcred = newnfs_getcred(); 4727 dsrm = NULL; 4728 if (mirrorcnt > 1) 4729 dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK); 4730 /* 4731 * Remove the file on each DS mirror, using kernel process(es) for the 4732 * additional mirrors. 4733 */ 4734 failpos = -1; 4735 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4736 tdsrm->tcred = tcred; 4737 tdsrm->p = p; 4738 tdsrm->dvp = dvp[i]; 4739 strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1); 4740 tdsrm->inprog = 0; 4741 tdsrm->done = 0; 4742 tdsrm->err = 0; 4743 ret = EIO; 4744 if (nfs_pnfsiothreads != 0) { 4745 ret = nfs_pnfsio(start_dsremove, tdsrm); 4746 NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret); 4747 } 4748 if (ret != 0) { 4749 ret = nfsrv_dsremove(dvp[i], fname, tcred, p); 4750 if (failpos == -1 && nfsds_failerr(ret)) 4751 failpos = i; 4752 } 4753 } 4754 ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p); 4755 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret)) 4756 failpos = mirrorcnt - 1; 4757 timo = hz / 50; /* Wait for 20msec. */ 4758 if (timo < 1) 4759 timo = 1; 4760 /* Wait for kernel task(s) to complete. */ 4761 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4762 while (tdsrm->inprog != 0 && tdsrm->done == 0) 4763 tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo); 4764 if (failpos == -1 && nfsds_failerr(tdsrm->err)) 4765 failpos = i; 4766 } 4767 4768 /* 4769 * If failpos has been set, that mirror has failed, so it needs 4770 * to be disabled. 4771 */ 4772 if (failpos >= 0) { 4773 nmp = VFSTONFS(dvp[failpos]->v_mount); 4774 NFSLOCKMNT(nmp); 4775 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4776 NFSMNTP_CANCELRPCS)) == 0) { 4777 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4778 NFSUNLOCKMNT(nmp); 4779 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4780 NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos, 4781 ds); 4782 if (ds != NULL) 4783 nfsrv_killrpcs(nmp); 4784 NFSLOCKMNT(nmp); 4785 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4786 wakeup(nmp); 4787 } 4788 NFSUNLOCKMNT(nmp); 4789 } 4790 4791 /* Get rid all layouts for the file. */ 4792 nfsrv_freefilelayouts(fhp); 4793 4794 NFSFREECRED(tcred); 4795 free(dsrm, M_TEMP); 4796 } 4797 4798 /* 4799 * Generate a file name based on the file handle and put it in *bufp. 4800 * Return the number of bytes generated. 4801 */ 4802 static int 4803 nfsrv_putfhname(fhandle_t *fhp, char *bufp) 4804 { 4805 int i; 4806 uint8_t *cp; 4807 const uint8_t *hexdigits = "0123456789abcdef"; 4808 4809 cp = (uint8_t *)fhp; 4810 for (i = 0; i < sizeof(*fhp); i++) { 4811 bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf]; 4812 bufp[2 * i + 1] = hexdigits[*cp++ & 0xf]; 4813 } 4814 bufp[2 * i] = '\0'; 4815 return (2 * i); 4816 } 4817 4818 /* 4819 * Update the Metadata file's attributes from the DS file when a Read/Write 4820 * layout is returned. 4821 * Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN 4822 * so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file. 4823 */ 4824 int 4825 nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 4826 { 4827 struct ucred *tcred; 4828 int error; 4829 4830 /* Do this as root so that it won't fail with EACCES. */ 4831 tcred = newnfs_getcred(); 4832 error = nfsrv_proxyds(vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN, 4833 NULL, NULL, NULL, nap, NULL, NULL, 0, NULL); 4834 NFSFREECRED(tcred); 4835 return (error); 4836 } 4837 4838 /* 4839 * Set the NFSv4 ACL on the DS file to the same ACL as the MDS file. 4840 */ 4841 static int 4842 nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred, 4843 NFSPROC_T *p) 4844 { 4845 int error; 4846 4847 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETACL, 4848 NULL, NULL, NULL, NULL, aclp, NULL, 0, NULL); 4849 return (error); 4850 } 4851 4852 static int 4853 nfsrv_proxyds(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 4854 struct thread *p, int ioproc, struct mbuf **mpp, char *cp, 4855 struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp, 4856 off_t *offp, int content, bool *eofp) 4857 { 4858 struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp; 4859 fhandle_t fh[NFSDEV_MAXMIRRORS]; 4860 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4861 struct nfsdevice *ds; 4862 struct pnfsdsattr dsattr; 4863 struct opnfsdsattr odsattr; 4864 char *buf; 4865 int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt; 4866 4867 NFSD_DEBUG(4, "in nfsrv_proxyds\n"); 4868 /* 4869 * If not a regular file, not exported or not a pNFS server, 4870 * just return ENOENT. 4871 */ 4872 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4873 nfsrv_devidcnt == 0) 4874 return (ENOENT); 4875 4876 buflen = 1024; 4877 buf = malloc(buflen, M_TEMP, M_WAITOK); 4878 error = 0; 4879 4880 /* 4881 * For Getattr, get the Change attribute (va_filerev) and size (va_size) 4882 * from the MetaData file's extended attribute. 4883 */ 4884 if (ioproc == NFSPROC_GETATTR) { 4885 error = vn_extattr_get(vp, IO_NODELOCKED, 4886 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf, 4887 p); 4888 if (error == 0) { 4889 if (buflen == sizeof(odsattr)) { 4890 NFSBCOPY(buf, &odsattr, buflen); 4891 nap->na_filerev = odsattr.dsa_filerev; 4892 nap->na_size = odsattr.dsa_size; 4893 nap->na_atime = odsattr.dsa_atime; 4894 nap->na_mtime = odsattr.dsa_mtime; 4895 /* 4896 * Fake na_bytes by rounding up na_size. 4897 * Since we don't know the block size, just 4898 * use BLKDEV_IOSIZE. 4899 */ 4900 nap->na_bytes = (odsattr.dsa_size + 4901 BLKDEV_IOSIZE - 1) & ~(BLKDEV_IOSIZE - 1); 4902 } else if (buflen == sizeof(dsattr)) { 4903 NFSBCOPY(buf, &dsattr, buflen); 4904 nap->na_filerev = dsattr.dsa_filerev; 4905 nap->na_size = dsattr.dsa_size; 4906 nap->na_atime = dsattr.dsa_atime; 4907 nap->na_mtime = dsattr.dsa_mtime; 4908 nap->na_bytes = dsattr.dsa_bytes; 4909 } else 4910 error = ENXIO; 4911 } 4912 if (error == 0) { 4913 /* 4914 * If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr() 4915 * returns 0, just return now. nfsrv_checkdsattr() 4916 * returns 0 if there is no Read/Write layout 4917 * plus either an Open/Write_access or Write 4918 * delegation issued to a client for the file. 4919 */ 4920 if (nfsrv_pnfsgetdsattr == 0 || 4921 nfsrv_checkdsattr(vp, p) == 0) { 4922 free(buf, M_TEMP); 4923 return (error); 4924 } 4925 } 4926 4927 /* 4928 * Clear ENOATTR so the code below will attempt to do a 4929 * nfsrv_getattrdsrpc() to get the attributes and (re)create 4930 * the extended attribute. 4931 */ 4932 if (error == ENOATTR) 4933 error = 0; 4934 } 4935 4936 origmircnt = -1; 4937 trycnt = 0; 4938 tryagain: 4939 if (error == 0) { 4940 buflen = 1024; 4941 if (ioproc == NFSPROC_READDS && NFSVOPISLOCKED(vp) == 4942 LK_EXCLUSIVE) 4943 printf("nfsrv_proxyds: Readds vp exclusively locked\n"); 4944 error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen, 4945 &mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL, 4946 NULL, NULL); 4947 if (error == 0) { 4948 for (i = 0; i < mirrorcnt; i++) 4949 nmp[i] = VFSTONFS(dvp[i]->v_mount); 4950 } else 4951 printf("pNFS: proxy getextattr sockaddr=%d\n", error); 4952 } else 4953 printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error); 4954 if (error == 0) { 4955 failpos = -1; 4956 if (origmircnt == -1) 4957 origmircnt = mirrorcnt; 4958 /* 4959 * If failpos is set to a mirror#, then that mirror has 4960 * failed and will be disabled. For Read, Getattr and Seek, the 4961 * function only tries one mirror, so if that mirror has 4962 * failed, it will need to be retried. As such, increment 4963 * tryitagain for these cases. 4964 * For Write, Setattr and Setacl, the function tries all 4965 * mirrors and will not return an error for the case where 4966 * one mirror has failed. For these cases, the functioning 4967 * mirror(s) will have been modified, so a retry isn't 4968 * necessary. These functions will set failpos for the 4969 * failed mirror#. 4970 */ 4971 if (ioproc == NFSPROC_READDS) { 4972 error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0], 4973 mpp, mpp2); 4974 if (nfsds_failerr(error) && mirrorcnt > 1) { 4975 /* 4976 * Setting failpos will cause the mirror 4977 * to be disabled and then a retry of this 4978 * read is required. 4979 */ 4980 failpos = 0; 4981 error = 0; 4982 trycnt++; 4983 } 4984 } else if (ioproc == NFSPROC_WRITEDS) 4985 error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp, 4986 &nmp[0], mirrorcnt, mpp, cp, &failpos); 4987 else if (ioproc == NFSPROC_SETATTR) 4988 error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0], 4989 mirrorcnt, nap, &failpos); 4990 else if (ioproc == NFSPROC_SETACL) 4991 error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0], 4992 mirrorcnt, aclp, &failpos); 4993 else if (ioproc == NFSPROC_SEEKDS) { 4994 error = nfsrv_seekdsrpc(fh, offp, content, eofp, cred, 4995 p, nmp[0]); 4996 if (nfsds_failerr(error) && mirrorcnt > 1) { 4997 /* 4998 * Setting failpos will cause the mirror 4999 * to be disabled and then a retry of this 5000 * read is required. 5001 */ 5002 failpos = 0; 5003 error = 0; 5004 trycnt++; 5005 } 5006 } else if (ioproc == NFSPROC_ALLOCATE) 5007 error = nfsrv_allocatedsrpc(fh, off, *offp, cred, p, vp, 5008 &nmp[0], mirrorcnt, &failpos); 5009 else if (ioproc == NFSPROC_DEALLOCATE) 5010 error = nfsrv_deallocatedsrpc(fh, off, *offp, cred, p, 5011 vp, &nmp[0], mirrorcnt, &failpos); 5012 else { 5013 error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p, 5014 vp, nmp[mirrorcnt - 1], nap); 5015 if (nfsds_failerr(error) && mirrorcnt > 1) { 5016 /* 5017 * Setting failpos will cause the mirror 5018 * to be disabled and then a retry of this 5019 * getattr is required. 5020 */ 5021 failpos = mirrorcnt - 1; 5022 error = 0; 5023 trycnt++; 5024 } 5025 } 5026 ds = NULL; 5027 if (failpos >= 0) { 5028 failnmp = nmp[failpos]; 5029 NFSLOCKMNT(failnmp); 5030 if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM | 5031 NFSMNTP_CANCELRPCS)) == 0) { 5032 failnmp->nm_privflag |= NFSMNTP_CANCELRPCS; 5033 NFSUNLOCKMNT(failnmp); 5034 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, 5035 failnmp, p); 5036 NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n", 5037 failpos, ds); 5038 if (ds != NULL) 5039 nfsrv_killrpcs(failnmp); 5040 NFSLOCKMNT(failnmp); 5041 failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 5042 wakeup(failnmp); 5043 } 5044 NFSUNLOCKMNT(failnmp); 5045 } 5046 for (i = 0; i < mirrorcnt; i++) 5047 NFSVOPUNLOCK(dvp[i]); 5048 NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error, 5049 trycnt); 5050 /* Try the Read/Getattr again if a mirror was deleted. */ 5051 if (ds != NULL && trycnt > 0 && trycnt < origmircnt) 5052 goto tryagain; 5053 } else { 5054 /* Return ENOENT for any Extended Attribute error. */ 5055 error = ENOENT; 5056 } 5057 free(buf, M_TEMP); 5058 NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error); 5059 return (error); 5060 } 5061 5062 /* 5063 * Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended 5064 * attribute. 5065 * newnmpp - If it points to a non-NULL nmp, that is the destination and needs 5066 * to be checked. If it points to a NULL nmp, then it returns 5067 * a suitable destination. 5068 * curnmp - If non-NULL, it is the source mount for the copy. 5069 */ 5070 int 5071 nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp, 5072 int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp, 5073 char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp, 5074 struct nfsmount *curnmp, int *ippos, int *dsdirp) 5075 { 5076 struct vnode *dvp, *nvp = NULL, **tdvpp; 5077 struct mount *mp; 5078 struct nfsmount *nmp, *newnmp; 5079 struct sockaddr *sad; 5080 struct sockaddr_in *sin; 5081 struct nfsdevice *ds, *tds, *fndds; 5082 struct pnfsdsfile *pf; 5083 uint32_t dsdir; 5084 int error, fhiszero, fnd, gotone, i, mirrorcnt; 5085 5086 ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp"); 5087 *mirrorcntp = 1; 5088 tdvpp = dvpp; 5089 if (nvpp != NULL) 5090 *nvpp = NULL; 5091 if (dvpp != NULL) 5092 *dvpp = NULL; 5093 if (ippos != NULL) 5094 *ippos = -1; 5095 if (newnmpp != NULL) 5096 newnmp = *newnmpp; 5097 else 5098 newnmp = NULL; 5099 mp = vp->v_mount; 5100 error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5101 "pnfsd.dsfile", buflenp, buf, p); 5102 mirrorcnt = *buflenp / sizeof(*pf); 5103 if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS || 5104 *buflenp != sizeof(*pf) * mirrorcnt)) 5105 error = ENOATTR; 5106 5107 pf = (struct pnfsdsfile *)buf; 5108 /* If curnmp != NULL, check for a match in the mirror list. */ 5109 if (curnmp != NULL && error == 0) { 5110 fnd = 0; 5111 for (i = 0; i < mirrorcnt; i++, pf++) { 5112 sad = (struct sockaddr *)&pf->dsf_sin; 5113 if (nfsaddr2_match(sad, curnmp->nm_nam)) { 5114 if (ippos != NULL) 5115 *ippos = i; 5116 fnd = 1; 5117 break; 5118 } 5119 } 5120 if (fnd == 0) 5121 error = ENXIO; 5122 } 5123 5124 gotone = 0; 5125 pf = (struct pnfsdsfile *)buf; 5126 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt, 5127 error); 5128 for (i = 0; i < mirrorcnt && error == 0; i++, pf++) { 5129 fhiszero = 0; 5130 sad = (struct sockaddr *)&pf->dsf_sin; 5131 sin = &pf->dsf_sin; 5132 dsdir = pf->dsf_dir; 5133 if (dsdir >= nfsrv_dsdirsize) { 5134 printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir); 5135 error = ENOATTR; 5136 } else if (nvpp != NULL && newnmp != NULL && 5137 nfsaddr2_match(sad, newnmp->nm_nam)) 5138 error = EEXIST; 5139 if (error == 0) { 5140 if (ippos != NULL && curnmp == NULL && 5141 sad->sa_family == AF_INET && 5142 sin->sin_addr.s_addr == 0) 5143 *ippos = i; 5144 if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0) 5145 fhiszero = 1; 5146 /* Use the socket address to find the mount point. */ 5147 fndds = NULL; 5148 NFSDDSLOCK(); 5149 /* Find a match for the IP address. */ 5150 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 5151 if (ds->nfsdev_nmp != NULL) { 5152 dvp = ds->nfsdev_dvp; 5153 nmp = VFSTONFS(dvp->v_mount); 5154 if (nmp != ds->nfsdev_nmp) 5155 printf("different2 nmp %p %p\n", 5156 nmp, ds->nfsdev_nmp); 5157 if (nfsaddr2_match(sad, nmp->nm_nam)) { 5158 fndds = ds; 5159 break; 5160 } 5161 } 5162 } 5163 if (fndds != NULL && newnmpp != NULL && 5164 newnmp == NULL) { 5165 /* Search for a place to make a mirror copy. */ 5166 TAILQ_FOREACH(tds, &nfsrv_devidhead, 5167 nfsdev_list) { 5168 if (tds->nfsdev_nmp != NULL && 5169 fndds != tds && 5170 ((tds->nfsdev_mdsisset == 0 && 5171 fndds->nfsdev_mdsisset == 0) || 5172 (tds->nfsdev_mdsisset != 0 && 5173 fndds->nfsdev_mdsisset != 0 && 5174 fsidcmp(&tds->nfsdev_mdsfsid, 5175 &mp->mnt_stat.f_fsid) == 0))) { 5176 *newnmpp = tds->nfsdev_nmp; 5177 break; 5178 } 5179 } 5180 if (tds != NULL) { 5181 /* 5182 * Move this entry to the end of the 5183 * list, so it won't be selected as 5184 * easily the next time. 5185 */ 5186 TAILQ_REMOVE(&nfsrv_devidhead, tds, 5187 nfsdev_list); 5188 TAILQ_INSERT_TAIL(&nfsrv_devidhead, tds, 5189 nfsdev_list); 5190 } 5191 } 5192 NFSDDSUNLOCK(); 5193 if (fndds != NULL) { 5194 dvp = fndds->nfsdev_dsdir[dsdir]; 5195 if (lktype != 0 || fhiszero != 0 || 5196 (nvpp != NULL && *nvpp == NULL)) { 5197 if (fhiszero != 0) 5198 error = vn_lock(dvp, 5199 LK_EXCLUSIVE); 5200 else if (lktype != 0) 5201 error = vn_lock(dvp, lktype); 5202 else 5203 error = vn_lock(dvp, LK_SHARED); 5204 /* 5205 * If the file handle is all 0's, try to 5206 * do a Lookup against the DS to acquire 5207 * it. 5208 * If dvpp == NULL or the Lookup fails, 5209 * unlock dvp after the call. 5210 */ 5211 if (error == 0 && (fhiszero != 0 || 5212 (nvpp != NULL && *nvpp == NULL))) { 5213 error = nfsrv_pnfslookupds(vp, 5214 dvp, pf, &nvp, p); 5215 if (error == 0) { 5216 if (fhiszero != 0) 5217 nfsrv_pnfssetfh( 5218 vp, pf, 5219 devid, 5220 fnamep, 5221 nvp, p); 5222 if (nvpp != NULL && 5223 *nvpp == NULL) { 5224 *nvpp = nvp; 5225 *dsdirp = dsdir; 5226 } else 5227 vput(nvp); 5228 } 5229 if (error != 0 || lktype == 0) 5230 NFSVOPUNLOCK(dvp); 5231 } 5232 } 5233 if (error == 0) { 5234 gotone++; 5235 NFSD_DEBUG(4, "gotone=%d\n", gotone); 5236 if (devid != NULL) { 5237 NFSBCOPY(fndds->nfsdev_deviceid, 5238 devid, NFSX_V4DEVICEID); 5239 devid += NFSX_V4DEVICEID; 5240 } 5241 if (dvpp != NULL) 5242 *tdvpp++ = dvp; 5243 if (fhp != NULL) 5244 NFSBCOPY(&pf->dsf_fh, fhp++, 5245 NFSX_MYFH); 5246 if (fnamep != NULL && gotone == 1) 5247 strlcpy(fnamep, 5248 pf->dsf_filename, 5249 sizeof(pf->dsf_filename)); 5250 } else 5251 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt " 5252 "err=%d\n", error); 5253 } 5254 } 5255 } 5256 if (error == 0 && gotone == 0) 5257 error = ENOENT; 5258 5259 NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone, 5260 error); 5261 if (error == 0) 5262 *mirrorcntp = gotone; 5263 else { 5264 if (gotone > 0 && dvpp != NULL) { 5265 /* 5266 * If the error didn't occur on the first one and 5267 * dvpp != NULL, the one(s) prior to the failure will 5268 * have locked dvp's that need to be unlocked. 5269 */ 5270 for (i = 0; i < gotone; i++) { 5271 NFSVOPUNLOCK(*dvpp); 5272 *dvpp++ = NULL; 5273 } 5274 } 5275 /* 5276 * If it found the vnode to be copied from before a failure, 5277 * it needs to be vput()'d. 5278 */ 5279 if (nvpp != NULL && *nvpp != NULL) { 5280 vput(*nvpp); 5281 *nvpp = NULL; 5282 } 5283 } 5284 return (error); 5285 } 5286 5287 /* 5288 * Set the extended attribute for the Change attribute. 5289 */ 5290 static int 5291 nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 5292 { 5293 struct pnfsdsattr dsattr; 5294 int error; 5295 5296 ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp"); 5297 dsattr.dsa_filerev = nap->na_filerev; 5298 dsattr.dsa_size = nap->na_size; 5299 dsattr.dsa_atime = nap->na_atime; 5300 dsattr.dsa_mtime = nap->na_mtime; 5301 dsattr.dsa_bytes = nap->na_bytes; 5302 error = vn_extattr_set(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5303 "pnfsd.dsattr", sizeof(dsattr), (char *)&dsattr, p); 5304 if (error != 0) 5305 printf("pNFS: setextattr=%d\n", error); 5306 return (error); 5307 } 5308 5309 static int 5310 nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5311 NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp) 5312 { 5313 uint32_t *tl; 5314 struct nfsrv_descript *nd; 5315 nfsv4stateid_t st; 5316 struct mbuf *m, *m2; 5317 int error = 0, retlen, tlen, trimlen; 5318 5319 NFSD_DEBUG(4, "in nfsrv_readdsrpc\n"); 5320 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5321 *mpp = NULL; 5322 /* 5323 * Use a stateid where other is an alternating 01010 pattern and 5324 * seqid is 0xffffffff. This value is not defined as special by 5325 * the RFC and is used by the FreeBSD NFS server to indicate an 5326 * MDS->DS proxy operation. 5327 */ 5328 st.other[0] = 0x55555555; 5329 st.other[1] = 0x55555555; 5330 st.other[2] = 0x55555555; 5331 st.seqid = 0xffffffff; 5332 nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5333 NULL, NULL, 0, 0, cred); 5334 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5335 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5336 txdr_hyper(off, tl); 5337 *(tl + 2) = txdr_unsigned(len); 5338 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5339 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5340 if (error != 0) { 5341 free(nd, M_TEMP); 5342 return (error); 5343 } 5344 if (nd->nd_repstat == 0) { 5345 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 5346 NFSM_STRSIZ(retlen, len); 5347 if (retlen > 0) { 5348 /* Trim off the pre-data XDR from the mbuf chain. */ 5349 m = nd->nd_mrep; 5350 while (m != NULL && m != nd->nd_md) { 5351 if (m->m_next == nd->nd_md) { 5352 m->m_next = NULL; 5353 m_freem(nd->nd_mrep); 5354 nd->nd_mrep = m = nd->nd_md; 5355 } else 5356 m = m->m_next; 5357 } 5358 if (m == NULL) { 5359 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5360 error = ENOENT; 5361 goto nfsmout; 5362 } 5363 5364 /* 5365 * Now, adjust first mbuf so that any XDR before the 5366 * read data is skipped over. 5367 */ 5368 trimlen = nd->nd_dpos - mtod(m, char *); 5369 if (trimlen > 0) { 5370 m->m_len -= trimlen; 5371 NFSM_DATAP(m, trimlen); 5372 } 5373 5374 /* 5375 * Truncate the mbuf chain at retlen bytes of data, 5376 * plus XDR padding that brings the length up to a 5377 * multiple of 4. 5378 */ 5379 tlen = NFSM_RNDUP(retlen); 5380 do { 5381 if (m->m_len >= tlen) { 5382 m->m_len = tlen; 5383 tlen = 0; 5384 m2 = m->m_next; 5385 m->m_next = NULL; 5386 m_freem(m2); 5387 break; 5388 } 5389 tlen -= m->m_len; 5390 m = m->m_next; 5391 } while (m != NULL); 5392 if (tlen > 0) { 5393 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5394 error = ENOENT; 5395 goto nfsmout; 5396 } 5397 *mpp = nd->nd_mrep; 5398 *mpendp = m; 5399 nd->nd_mrep = NULL; 5400 } 5401 } else 5402 error = nd->nd_repstat; 5403 nfsmout: 5404 /* If nd->nd_mrep is already NULL, this is a no-op. */ 5405 m_freem(nd->nd_mrep); 5406 free(nd, M_TEMP); 5407 NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error); 5408 return (error); 5409 } 5410 5411 /* 5412 * Do a write RPC on a DS data file, using this structure for the arguments, 5413 * so that this function can be executed by a separate kernel process. 5414 */ 5415 struct nfsrvwritedsdorpc { 5416 int done; 5417 int inprog; 5418 struct task tsk; 5419 fhandle_t fh; 5420 off_t off; 5421 int len; 5422 struct nfsmount *nmp; 5423 struct ucred *cred; 5424 NFSPROC_T *p; 5425 struct mbuf *m; 5426 int err; 5427 }; 5428 5429 static int 5430 nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len, 5431 struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p) 5432 { 5433 uint32_t *tl; 5434 struct nfsrv_descript *nd; 5435 nfsattrbit_t attrbits; 5436 nfsv4stateid_t st; 5437 int commit, error, retlen; 5438 5439 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5440 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp, 5441 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5442 5443 /* 5444 * Use a stateid where other is an alternating 01010 pattern and 5445 * seqid is 0xffffffff. This value is not defined as special by 5446 * the RFC and is used by the FreeBSD NFS server to indicate an 5447 * MDS->DS proxy operation. 5448 */ 5449 st.other[0] = 0x55555555; 5450 st.other[1] = 0x55555555; 5451 st.other[2] = 0x55555555; 5452 st.seqid = 0xffffffff; 5453 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5454 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5455 txdr_hyper(off, tl); 5456 tl += 2; 5457 /* 5458 * Do all writes FileSync, since the server doesn't hold onto dirty 5459 * buffers. Since clients should be accessing the DS servers directly 5460 * using the pNFS layouts, this just needs to work correctly as a 5461 * fallback. 5462 */ 5463 *tl++ = txdr_unsigned(NFSWRITE_FILESYNC); 5464 *tl = txdr_unsigned(len); 5465 NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len); 5466 5467 /* Put data in mbuf chain. */ 5468 nd->nd_mb->m_next = m; 5469 5470 /* Set nd_mb and nd_bpos to end of data. */ 5471 while (m->m_next != NULL) 5472 m = m->m_next; 5473 nd->nd_mb = m; 5474 nfsm_set(nd, m->m_len); 5475 NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len); 5476 5477 /* Do a Getattr for the attributes that change upon writing. */ 5478 NFSZERO_ATTRBIT(&attrbits); 5479 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5480 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5481 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5482 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5483 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5484 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 5485 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5486 (void) nfsrv_putattrbit(nd, &attrbits); 5487 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5488 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5489 if (error != 0) { 5490 free(nd, M_TEMP); 5491 return (error); 5492 } 5493 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat); 5494 /* Get rid of weak cache consistency data for now. */ 5495 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5496 (ND_NFSV4 | ND_V4WCCATTR)) { 5497 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5498 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5499 NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error); 5500 if (error != 0) 5501 goto nfsmout; 5502 /* 5503 * Get rid of Op# and status for next op. 5504 */ 5505 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5506 if (*++tl != 0) 5507 nd->nd_flag |= ND_NOMOREDATA; 5508 } 5509 if (nd->nd_repstat == 0) { 5510 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5511 retlen = fxdr_unsigned(int, *tl++); 5512 commit = fxdr_unsigned(int, *tl); 5513 if (commit != NFSWRITE_FILESYNC) 5514 error = NFSERR_IO; 5515 NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n", 5516 retlen, commit, error); 5517 } else 5518 error = nd->nd_repstat; 5519 /* We have no use for the Write Verifier since we use FileSync. */ 5520 5521 /* 5522 * Get the Change, Size, Access Time and Modify Time attributes and set 5523 * on the Metadata file, so its attributes will be what the file's 5524 * would be if it had been written. 5525 */ 5526 if (error == 0) { 5527 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5528 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5529 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5530 } 5531 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error); 5532 nfsmout: 5533 m_freem(nd->nd_mrep); 5534 free(nd, M_TEMP); 5535 NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error); 5536 return (error); 5537 } 5538 5539 /* 5540 * Start up the thread that will execute nfsrv_writedsdorpc(). 5541 */ 5542 static void 5543 start_writedsdorpc(void *arg, int pending) 5544 { 5545 struct nfsrvwritedsdorpc *drpc; 5546 5547 drpc = (struct nfsrvwritedsdorpc *)arg; 5548 drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5549 drpc->len, NULL, drpc->m, drpc->cred, drpc->p); 5550 drpc->done = 1; 5551 NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err); 5552 } 5553 5554 static int 5555 nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5556 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5557 struct mbuf **mpp, char *cp, int *failposp) 5558 { 5559 struct nfsrvwritedsdorpc *drpc, *tdrpc = NULL; 5560 struct nfsvattr na; 5561 struct mbuf *m; 5562 int error, i, offs, ret, timo; 5563 5564 NFSD_DEBUG(4, "in nfsrv_writedsrpc\n"); 5565 KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain")); 5566 drpc = NULL; 5567 if (mirrorcnt > 1) 5568 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5569 M_WAITOK); 5570 5571 /* Calculate offset in mbuf chain that data starts. */ 5572 offs = cp - mtod(*mpp, char *); 5573 NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len); 5574 5575 /* 5576 * Do the write RPC for every DS, using a separate kernel process 5577 * for every DS except the last one. 5578 */ 5579 error = 0; 5580 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5581 tdrpc->done = 0; 5582 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5583 tdrpc->off = off; 5584 tdrpc->len = len; 5585 tdrpc->nmp = *nmpp; 5586 tdrpc->cred = cred; 5587 tdrpc->p = p; 5588 tdrpc->inprog = 0; 5589 tdrpc->err = 0; 5590 tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5591 ret = EIO; 5592 if (nfs_pnfsiothreads != 0) { 5593 ret = nfs_pnfsio(start_writedsdorpc, tdrpc); 5594 NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n", 5595 ret); 5596 } 5597 if (ret != 0) { 5598 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL, 5599 tdrpc->m, cred, p); 5600 if (nfsds_failerr(ret) && *failposp == -1) 5601 *failposp = i; 5602 else if (error == 0 && ret != 0) 5603 error = ret; 5604 } 5605 nmpp++; 5606 fhp++; 5607 } 5608 m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5609 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p); 5610 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5611 *failposp = mirrorcnt - 1; 5612 else if (error == 0 && ret != 0) 5613 error = ret; 5614 if (error == 0) 5615 error = nfsrv_setextattr(vp, &na, p); 5616 NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error); 5617 tdrpc = drpc; 5618 timo = hz / 50; /* Wait for 20msec. */ 5619 if (timo < 1) 5620 timo = 1; 5621 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5622 /* Wait for RPCs on separate threads to complete. */ 5623 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5624 tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo); 5625 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5626 *failposp = i; 5627 else if (error == 0 && tdrpc->err != 0) 5628 error = tdrpc->err; 5629 } 5630 free(drpc, M_TEMP); 5631 return (error); 5632 } 5633 5634 /* 5635 * Do a allocate RPC on a DS data file, using this structure for the arguments, 5636 * so that this function can be executed by a separate kernel process. 5637 */ 5638 struct nfsrvallocatedsdorpc { 5639 int done; 5640 int inprog; 5641 struct task tsk; 5642 fhandle_t fh; 5643 off_t off; 5644 off_t len; 5645 struct nfsmount *nmp; 5646 struct ucred *cred; 5647 NFSPROC_T *p; 5648 int err; 5649 }; 5650 5651 static int 5652 nfsrv_allocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5653 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5654 { 5655 uint32_t *tl; 5656 struct nfsrv_descript *nd; 5657 nfsattrbit_t attrbits; 5658 nfsv4stateid_t st; 5659 int error; 5660 5661 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5662 nfscl_reqstart(nd, NFSPROC_ALLOCATE, nmp, (u_int8_t *)fhp, 5663 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5664 5665 /* 5666 * Use a stateid where other is an alternating 01010 pattern and 5667 * seqid is 0xffffffff. This value is not defined as special by 5668 * the RFC and is used by the FreeBSD NFS server to indicate an 5669 * MDS->DS proxy operation. 5670 */ 5671 st.other[0] = 0x55555555; 5672 st.other[1] = 0x55555555; 5673 st.other[2] = 0x55555555; 5674 st.seqid = 0xffffffff; 5675 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5676 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5677 txdr_hyper(off, tl); tl += 2; 5678 txdr_hyper(len, tl); tl += 2; 5679 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: len=%jd\n", (intmax_t)len); 5680 5681 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5682 NFSGETATTR_ATTRBIT(&attrbits); 5683 nfsrv_putattrbit(nd, &attrbits); 5684 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5685 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5686 if (error != 0) { 5687 free(nd, M_TEMP); 5688 return (error); 5689 } 5690 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft allocaterpc=%d\n", 5691 nd->nd_repstat); 5692 if (nd->nd_repstat == 0) { 5693 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5694 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5695 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5696 } else 5697 error = nd->nd_repstat; 5698 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft loadattr=%d\n", error); 5699 nfsmout: 5700 m_freem(nd->nd_mrep); 5701 free(nd, M_TEMP); 5702 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc error=%d\n", error); 5703 return (error); 5704 } 5705 5706 /* 5707 * Start up the thread that will execute nfsrv_allocatedsdorpc(). 5708 */ 5709 static void 5710 start_allocatedsdorpc(void *arg, int pending) 5711 { 5712 struct nfsrvallocatedsdorpc *drpc; 5713 5714 drpc = (struct nfsrvallocatedsdorpc *)arg; 5715 drpc->err = nfsrv_allocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5716 drpc->len, NULL, drpc->cred, drpc->p); 5717 drpc->done = 1; 5718 NFSD_DEBUG(4, "start_allocatedsdorpc: err=%d\n", drpc->err); 5719 } 5720 5721 static int 5722 nfsrv_allocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5723 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5724 int *failposp) 5725 { 5726 struct nfsrvallocatedsdorpc *drpc, *tdrpc = NULL; 5727 struct nfsvattr na; 5728 int error, i, ret, timo; 5729 5730 NFSD_DEBUG(4, "in nfsrv_allocatedsrpc\n"); 5731 drpc = NULL; 5732 if (mirrorcnt > 1) 5733 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5734 M_WAITOK); 5735 5736 /* 5737 * Do the allocate RPC for every DS, using a separate kernel process 5738 * for every DS except the last one. 5739 */ 5740 error = 0; 5741 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5742 tdrpc->done = 0; 5743 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5744 tdrpc->off = off; 5745 tdrpc->len = len; 5746 tdrpc->nmp = *nmpp; 5747 tdrpc->cred = cred; 5748 tdrpc->p = p; 5749 tdrpc->inprog = 0; 5750 tdrpc->err = 0; 5751 ret = EIO; 5752 if (nfs_pnfsiothreads != 0) { 5753 ret = nfs_pnfsio(start_allocatedsdorpc, tdrpc); 5754 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: nfs_pnfsio=%d\n", 5755 ret); 5756 } 5757 if (ret != 0) { 5758 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, NULL, 5759 cred, p); 5760 if (nfsds_failerr(ret) && *failposp == -1) 5761 *failposp = i; 5762 else if (error == 0 && ret != 0) 5763 error = ret; 5764 } 5765 nmpp++; 5766 fhp++; 5767 } 5768 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5769 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5770 *failposp = mirrorcnt - 1; 5771 else if (error == 0 && ret != 0) 5772 error = ret; 5773 if (error == 0) 5774 error = nfsrv_setextattr(vp, &na, p); 5775 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: aft setextat=%d\n", error); 5776 tdrpc = drpc; 5777 timo = hz / 50; /* Wait for 20msec. */ 5778 if (timo < 1) 5779 timo = 1; 5780 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5781 /* Wait for RPCs on separate threads to complete. */ 5782 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5783 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5784 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5785 *failposp = i; 5786 else if (error == 0 && tdrpc->err != 0) 5787 error = tdrpc->err; 5788 } 5789 free(drpc, M_TEMP); 5790 return (error); 5791 } 5792 5793 /* 5794 * Do a deallocate RPC on a DS data file, using this structure for the 5795 * arguments, so that this function can be executed by a separate kernel 5796 * process. 5797 */ 5798 struct nfsrvdeallocatedsdorpc { 5799 int done; 5800 int inprog; 5801 struct task tsk; 5802 fhandle_t fh; 5803 off_t off; 5804 off_t len; 5805 struct nfsmount *nmp; 5806 struct ucred *cred; 5807 NFSPROC_T *p; 5808 int err; 5809 }; 5810 5811 static int 5812 nfsrv_deallocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5813 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5814 { 5815 uint32_t *tl; 5816 struct nfsrv_descript *nd; 5817 nfsattrbit_t attrbits; 5818 nfsv4stateid_t st; 5819 int error; 5820 5821 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5822 nfscl_reqstart(nd, NFSPROC_DEALLOCATE, nmp, (u_int8_t *)fhp, 5823 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5824 5825 /* 5826 * Use a stateid where other is an alternating 01010 pattern and 5827 * seqid is 0xffffffff. This value is not defined as special by 5828 * the RFC and is used by the FreeBSD NFS server to indicate an 5829 * MDS->DS proxy operation. 5830 */ 5831 st.other[0] = 0x55555555; 5832 st.other[1] = 0x55555555; 5833 st.other[2] = 0x55555555; 5834 st.seqid = 0xffffffff; 5835 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5836 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5837 txdr_hyper(off, tl); tl += 2; 5838 txdr_hyper(len, tl); tl += 2; 5839 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: len=%jd\n", (intmax_t)len); 5840 5841 /* Do a Getattr for the attributes that change upon writing. */ 5842 NFSZERO_ATTRBIT(&attrbits); 5843 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5844 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5845 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5846 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5847 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5848 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5849 nfsrv_putattrbit(nd, &attrbits); 5850 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5851 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5852 if (error != 0) { 5853 free(nd, M_TEMP); 5854 return (error); 5855 } 5856 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft deallocaterpc=%d\n", 5857 nd->nd_repstat); 5858 /* Get rid of weak cache consistency data for now. */ 5859 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5860 (ND_NFSV4 | ND_V4WCCATTR)) { 5861 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5862 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5863 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: wcc attr=%d\n", error); 5864 if (error != 0) 5865 goto nfsmout; 5866 /* 5867 * Get rid of Op# and status for next op. 5868 */ 5869 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5870 if (*++tl != 0) 5871 nd->nd_flag |= ND_NOMOREDATA; 5872 } 5873 if (nd->nd_repstat == 0) { 5874 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5875 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5876 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 5877 } else 5878 error = nd->nd_repstat; 5879 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft loadattr=%d\n", error); 5880 nfsmout: 5881 m_freem(nd->nd_mrep); 5882 free(nd, M_TEMP); 5883 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc error=%d\n", error); 5884 return (error); 5885 } 5886 5887 /* 5888 * Start up the thread that will execute nfsrv_deallocatedsdorpc(). 5889 */ 5890 static void 5891 start_deallocatedsdorpc(void *arg, int pending) 5892 { 5893 struct nfsrvdeallocatedsdorpc *drpc; 5894 5895 drpc = (struct nfsrvdeallocatedsdorpc *)arg; 5896 drpc->err = nfsrv_deallocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5897 drpc->len, NULL, drpc->cred, drpc->p); 5898 drpc->done = 1; 5899 NFSD_DEBUG(4, "start_deallocatedsdorpc: err=%d\n", drpc->err); 5900 } 5901 5902 static int 5903 nfsrv_deallocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5904 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5905 int *failposp) 5906 { 5907 struct nfsrvdeallocatedsdorpc *drpc, *tdrpc = NULL; 5908 struct nfsvattr na; 5909 int error, i, ret, timo; 5910 5911 NFSD_DEBUG(4, "in nfsrv_deallocatedsrpc\n"); 5912 drpc = NULL; 5913 if (mirrorcnt > 1) 5914 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5915 M_WAITOK); 5916 5917 /* 5918 * Do the deallocate RPC for every DS, using a separate kernel process 5919 * for every DS except the last one. 5920 */ 5921 error = 0; 5922 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5923 tdrpc->done = 0; 5924 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5925 tdrpc->off = off; 5926 tdrpc->len = len; 5927 tdrpc->nmp = *nmpp; 5928 tdrpc->cred = cred; 5929 tdrpc->p = p; 5930 tdrpc->inprog = 0; 5931 tdrpc->err = 0; 5932 ret = EIO; 5933 if (nfs_pnfsiothreads != 0) { 5934 ret = nfs_pnfsio(start_deallocatedsdorpc, tdrpc); 5935 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: nfs_pnfsio=%d\n", 5936 ret); 5937 } 5938 if (ret != 0) { 5939 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, 5940 NULL, cred, p); 5941 if (nfsds_failerr(ret) && *failposp == -1) 5942 *failposp = i; 5943 else if (error == 0 && ret != 0) 5944 error = ret; 5945 } 5946 nmpp++; 5947 fhp++; 5948 } 5949 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5950 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5951 *failposp = mirrorcnt - 1; 5952 else if (error == 0 && ret != 0) 5953 error = ret; 5954 if (error == 0) 5955 error = nfsrv_setextattr(vp, &na, p); 5956 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: aft setextat=%d\n", error); 5957 tdrpc = drpc; 5958 timo = hz / 50; /* Wait for 20msec. */ 5959 if (timo < 1) 5960 timo = 1; 5961 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5962 /* Wait for RPCs on separate threads to complete. */ 5963 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5964 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5965 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5966 *failposp = i; 5967 else if (error == 0 && tdrpc->err != 0) 5968 error = tdrpc->err; 5969 } 5970 free(drpc, M_TEMP); 5971 return (error); 5972 } 5973 5974 static int 5975 nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 5976 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap, 5977 struct nfsvattr *dsnap) 5978 { 5979 uint32_t *tl; 5980 struct nfsrv_descript *nd; 5981 nfsv4stateid_t st; 5982 nfsattrbit_t attrbits; 5983 int error; 5984 5985 NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n"); 5986 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5987 /* 5988 * Use a stateid where other is an alternating 01010 pattern and 5989 * seqid is 0xffffffff. This value is not defined as special by 5990 * the RFC and is used by the FreeBSD NFS server to indicate an 5991 * MDS->DS proxy operation. 5992 */ 5993 st.other[0] = 0x55555555; 5994 st.other[1] = 0x55555555; 5995 st.other[2] = 0x55555555; 5996 st.seqid = 0xffffffff; 5997 nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5998 NULL, NULL, 0, 0, cred); 5999 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6000 nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0); 6001 6002 /* Do a Getattr for the attributes that change due to writing. */ 6003 NFSZERO_ATTRBIT(&attrbits); 6004 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6005 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6006 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6007 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6008 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6009 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 6010 *tl = txdr_unsigned(NFSV4OP_GETATTR); 6011 (void) nfsrv_putattrbit(nd, &attrbits); 6012 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6013 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6014 if (error != 0) { 6015 free(nd, M_TEMP); 6016 return (error); 6017 } 6018 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n", 6019 nd->nd_repstat); 6020 /* Get rid of weak cache consistency data for now. */ 6021 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 6022 (ND_NFSV4 | ND_V4WCCATTR)) { 6023 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6024 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 6025 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error); 6026 if (error != 0) 6027 goto nfsmout; 6028 /* 6029 * Get rid of Op# and status for next op. 6030 */ 6031 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6032 if (*++tl != 0) 6033 nd->nd_flag |= ND_NOMOREDATA; 6034 } 6035 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 6036 if (error != 0) 6037 goto nfsmout; 6038 if (nd->nd_repstat != 0) 6039 error = nd->nd_repstat; 6040 /* 6041 * Get the Change, Size, Access Time and Modify Time attributes and set 6042 * on the Metadata file, so its attributes will be what the file's 6043 * would be if it had been written. 6044 */ 6045 if (error == 0) { 6046 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6047 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6048 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL); 6049 } 6050 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error); 6051 nfsmout: 6052 m_freem(nd->nd_mrep); 6053 free(nd, M_TEMP); 6054 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error); 6055 return (error); 6056 } 6057 6058 struct nfsrvsetattrdsdorpc { 6059 int done; 6060 int inprog; 6061 struct task tsk; 6062 fhandle_t fh; 6063 struct nfsmount *nmp; 6064 struct vnode *vp; 6065 struct ucred *cred; 6066 NFSPROC_T *p; 6067 struct nfsvattr na; 6068 struct nfsvattr dsna; 6069 int err; 6070 }; 6071 6072 /* 6073 * Start up the thread that will execute nfsrv_setattrdsdorpc(). 6074 */ 6075 static void 6076 start_setattrdsdorpc(void *arg, int pending) 6077 { 6078 struct nfsrvsetattrdsdorpc *drpc; 6079 6080 drpc = (struct nfsrvsetattrdsdorpc *)arg; 6081 drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p, 6082 drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna); 6083 drpc->done = 1; 6084 } 6085 6086 static int 6087 nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6088 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 6089 struct nfsvattr *nap, int *failposp) 6090 { 6091 struct nfsrvsetattrdsdorpc *drpc, *tdrpc = NULL; 6092 struct nfsvattr na; 6093 int error, i, ret, timo; 6094 6095 NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n"); 6096 drpc = NULL; 6097 if (mirrorcnt > 1) 6098 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6099 M_WAITOK); 6100 6101 /* 6102 * Do the setattr RPC for every DS, using a separate kernel process 6103 * for every DS except the last one. 6104 */ 6105 error = 0; 6106 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6107 tdrpc->done = 0; 6108 tdrpc->inprog = 0; 6109 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6110 tdrpc->nmp = *nmpp; 6111 tdrpc->vp = vp; 6112 tdrpc->cred = cred; 6113 tdrpc->p = p; 6114 tdrpc->na = *nap; 6115 tdrpc->err = 0; 6116 ret = EIO; 6117 if (nfs_pnfsiothreads != 0) { 6118 ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc); 6119 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n", 6120 ret); 6121 } 6122 if (ret != 0) { 6123 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, 6124 &na); 6125 if (nfsds_failerr(ret) && *failposp == -1) 6126 *failposp = i; 6127 else if (error == 0 && ret != 0) 6128 error = ret; 6129 } 6130 nmpp++; 6131 fhp++; 6132 } 6133 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na); 6134 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6135 *failposp = mirrorcnt - 1; 6136 else if (error == 0 && ret != 0) 6137 error = ret; 6138 if (error == 0) 6139 error = nfsrv_setextattr(vp, &na, p); 6140 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error); 6141 tdrpc = drpc; 6142 timo = hz / 50; /* Wait for 20msec. */ 6143 if (timo < 1) 6144 timo = 1; 6145 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6146 /* Wait for RPCs on separate threads to complete. */ 6147 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6148 tsleep(&tdrpc->tsk, PVFS, "srvsads", timo); 6149 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6150 *failposp = i; 6151 else if (error == 0 && tdrpc->err != 0) 6152 error = tdrpc->err; 6153 } 6154 free(drpc, M_TEMP); 6155 return (error); 6156 } 6157 6158 /* 6159 * Do a Setattr of an NFSv4 ACL on the DS file. 6160 */ 6161 static int 6162 nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6163 struct vnode *vp, struct nfsmount *nmp, struct acl *aclp) 6164 { 6165 struct nfsrv_descript *nd; 6166 nfsv4stateid_t st; 6167 nfsattrbit_t attrbits; 6168 int error; 6169 6170 NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n"); 6171 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6172 /* 6173 * Use a stateid where other is an alternating 01010 pattern and 6174 * seqid is 0xffffffff. This value is not defined as special by 6175 * the RFC and is used by the FreeBSD NFS server to indicate an 6176 * MDS->DS proxy operation. 6177 */ 6178 st.other[0] = 0x55555555; 6179 st.other[1] = 0x55555555; 6180 st.other[2] = 0x55555555; 6181 st.seqid = 0xffffffff; 6182 nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6183 NULL, NULL, 0, 0, cred); 6184 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6185 NFSZERO_ATTRBIT(&attrbits); 6186 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 6187 /* 6188 * The "vp" argument to nfsv4_fillattr() is only used for vnode_type(), 6189 * so passing in the metadata "vp" will be ok, since it is of 6190 * the same type (VREG). 6191 */ 6192 nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL, 6193 NULL, 0, 0, 0, 0, 0, NULL); 6194 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6195 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6196 if (error != 0) { 6197 free(nd, M_TEMP); 6198 return (error); 6199 } 6200 NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n", 6201 nd->nd_repstat); 6202 error = nd->nd_repstat; 6203 m_freem(nd->nd_mrep); 6204 free(nd, M_TEMP); 6205 return (error); 6206 } 6207 6208 struct nfsrvsetacldsdorpc { 6209 int done; 6210 int inprog; 6211 struct task tsk; 6212 fhandle_t fh; 6213 struct nfsmount *nmp; 6214 struct vnode *vp; 6215 struct ucred *cred; 6216 NFSPROC_T *p; 6217 struct acl *aclp; 6218 int err; 6219 }; 6220 6221 /* 6222 * Start up the thread that will execute nfsrv_setacldsdorpc(). 6223 */ 6224 static void 6225 start_setacldsdorpc(void *arg, int pending) 6226 { 6227 struct nfsrvsetacldsdorpc *drpc; 6228 6229 drpc = (struct nfsrvsetacldsdorpc *)arg; 6230 drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p, 6231 drpc->vp, drpc->nmp, drpc->aclp); 6232 drpc->done = 1; 6233 } 6234 6235 static int 6236 nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6237 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp, 6238 int *failposp) 6239 { 6240 struct nfsrvsetacldsdorpc *drpc, *tdrpc = NULL; 6241 int error, i, ret, timo; 6242 6243 NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n"); 6244 drpc = NULL; 6245 if (mirrorcnt > 1) 6246 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6247 M_WAITOK); 6248 6249 /* 6250 * Do the setattr RPC for every DS, using a separate kernel process 6251 * for every DS except the last one. 6252 */ 6253 error = 0; 6254 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6255 tdrpc->done = 0; 6256 tdrpc->inprog = 0; 6257 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6258 tdrpc->nmp = *nmpp; 6259 tdrpc->vp = vp; 6260 tdrpc->cred = cred; 6261 tdrpc->p = p; 6262 tdrpc->aclp = aclp; 6263 tdrpc->err = 0; 6264 ret = EIO; 6265 if (nfs_pnfsiothreads != 0) { 6266 ret = nfs_pnfsio(start_setacldsdorpc, tdrpc); 6267 NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n", 6268 ret); 6269 } 6270 if (ret != 0) { 6271 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, 6272 aclp); 6273 if (nfsds_failerr(ret) && *failposp == -1) 6274 *failposp = i; 6275 else if (error == 0 && ret != 0) 6276 error = ret; 6277 } 6278 nmpp++; 6279 fhp++; 6280 } 6281 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp); 6282 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6283 *failposp = mirrorcnt - 1; 6284 else if (error == 0 && ret != 0) 6285 error = ret; 6286 NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error); 6287 tdrpc = drpc; 6288 timo = hz / 50; /* Wait for 20msec. */ 6289 if (timo < 1) 6290 timo = 1; 6291 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6292 /* Wait for RPCs on separate threads to complete. */ 6293 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6294 tsleep(&tdrpc->tsk, PVFS, "srvacds", timo); 6295 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6296 *failposp = i; 6297 else if (error == 0 && tdrpc->err != 0) 6298 error = tdrpc->err; 6299 } 6300 free(drpc, M_TEMP); 6301 return (error); 6302 } 6303 6304 /* 6305 * Getattr call to the DS for the attributes that change due to writing. 6306 */ 6307 static int 6308 nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6309 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap) 6310 { 6311 struct nfsrv_descript *nd; 6312 int error; 6313 nfsattrbit_t attrbits; 6314 6315 NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n"); 6316 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6317 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp, 6318 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6319 NFSZERO_ATTRBIT(&attrbits); 6320 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6321 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6322 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6323 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6324 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6325 (void) nfsrv_putattrbit(nd, &attrbits); 6326 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6327 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6328 if (error != 0) { 6329 free(nd, M_TEMP); 6330 return (error); 6331 } 6332 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n", 6333 nd->nd_repstat); 6334 if (nd->nd_repstat == 0) { 6335 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 6336 NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, 6337 NULL, NULL); 6338 /* 6339 * We can only save the updated values in the extended 6340 * attribute if the vp is exclusively locked. 6341 * This should happen when any of the following operations 6342 * occur on the vnode: 6343 * Close, Delegreturn, LayoutCommit, LayoutReturn 6344 * As such, the updated extended attribute should get saved 6345 * before nfsrv_checkdsattr() returns 0 and allows the cached 6346 * attributes to be returned without calling this function. 6347 */ 6348 if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) { 6349 error = nfsrv_setextattr(vp, nap, p); 6350 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n", 6351 error); 6352 } 6353 } else 6354 error = nd->nd_repstat; 6355 m_freem(nd->nd_mrep); 6356 free(nd, M_TEMP); 6357 NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error); 6358 return (error); 6359 } 6360 6361 /* 6362 * Seek call to a DS. 6363 */ 6364 static int 6365 nfsrv_seekdsrpc(fhandle_t *fhp, off_t *offp, int content, bool *eofp, 6366 struct ucred *cred, NFSPROC_T *p, struct nfsmount *nmp) 6367 { 6368 uint32_t *tl; 6369 struct nfsrv_descript *nd; 6370 nfsv4stateid_t st; 6371 int error; 6372 6373 NFSD_DEBUG(4, "in nfsrv_seekdsrpc\n"); 6374 /* 6375 * Use a stateid where other is an alternating 01010 pattern and 6376 * seqid is 0xffffffff. This value is not defined as special by 6377 * the RFC and is used by the FreeBSD NFS server to indicate an 6378 * MDS->DS proxy operation. 6379 */ 6380 st.other[0] = 0x55555555; 6381 st.other[1] = 0x55555555; 6382 st.other[2] = 0x55555555; 6383 st.seqid = 0xffffffff; 6384 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6385 nfscl_reqstart(nd, NFSPROC_SEEKDS, nmp, (u_int8_t *)fhp, 6386 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6387 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6388 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6389 txdr_hyper(*offp, tl); tl += 2; 6390 *tl = txdr_unsigned(content); 6391 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6392 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6393 if (error != 0) { 6394 free(nd, M_TEMP); 6395 return (error); 6396 } 6397 NFSD_DEBUG(4, "nfsrv_seekdsrpc: aft seekrpc=%d\n", nd->nd_repstat); 6398 if (nd->nd_repstat == 0) { 6399 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + NFSX_HYPER); 6400 if (*tl++ == newnfs_true) 6401 *eofp = true; 6402 else 6403 *eofp = false; 6404 *offp = fxdr_hyper(tl); 6405 } else 6406 error = nd->nd_repstat; 6407 nfsmout: 6408 m_freem(nd->nd_mrep); 6409 free(nd, M_TEMP); 6410 NFSD_DEBUG(4, "nfsrv_seekdsrpc error=%d\n", error); 6411 return (error); 6412 } 6413 6414 /* 6415 * Get the device id and file handle for a DS file. 6416 */ 6417 int 6418 nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp, 6419 fhandle_t *fhp, char *devid) 6420 { 6421 int buflen, error; 6422 char *buf; 6423 6424 buflen = 1024; 6425 buf = malloc(buflen, M_TEMP, M_WAITOK); 6426 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL, 6427 fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL); 6428 free(buf, M_TEMP); 6429 return (error); 6430 } 6431 6432 /* 6433 * Do a Lookup against the DS for the filename. 6434 */ 6435 static int 6436 nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf, 6437 struct vnode **nvpp, NFSPROC_T *p) 6438 { 6439 struct nameidata named; 6440 struct ucred *tcred; 6441 char *bufp; 6442 u_long *hashp; 6443 struct vnode *nvp; 6444 int error; 6445 6446 tcred = newnfs_getcred(); 6447 named.ni_cnd.cn_nameiop = LOOKUP; 6448 named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY; 6449 named.ni_cnd.cn_cred = tcred; 6450 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 6451 nfsvno_setpathbuf(&named, &bufp, &hashp); 6452 named.ni_cnd.cn_nameptr = bufp; 6453 named.ni_cnd.cn_namelen = strlen(pf->dsf_filename); 6454 strlcpy(bufp, pf->dsf_filename, NAME_MAX); 6455 NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp); 6456 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 6457 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error); 6458 NFSFREECRED(tcred); 6459 nfsvno_relpathbuf(&named); 6460 if (error == 0) 6461 *nvpp = nvp; 6462 NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error); 6463 return (error); 6464 } 6465 6466 /* 6467 * Set the file handle to the correct one. 6468 */ 6469 static void 6470 nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, char *devid, 6471 char *fnamep, struct vnode *nvp, NFSPROC_T *p) 6472 { 6473 struct nfsnode *np; 6474 int ret = 0; 6475 6476 np = VTONFS(nvp); 6477 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH); 6478 /* 6479 * We can only do a vn_set_extattr() if the vnode is exclusively 6480 * locked and vn_start_write() has been done. If devid != NULL or 6481 * fnamep != NULL or the vnode is shared locked, vn_start_write() 6482 * may not have been done. 6483 * If not done now, it will be done on a future call. 6484 */ 6485 if (devid == NULL && fnamep == NULL && NFSVOPISLOCKED(vp) == 6486 LK_EXCLUSIVE) 6487 ret = vn_extattr_set(vp, IO_NODELOCKED, 6488 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", sizeof(*pf), 6489 (char *)pf, p); 6490 NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret); 6491 } 6492 6493 /* 6494 * Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point 6495 * when the DS has failed. 6496 */ 6497 void 6498 nfsrv_killrpcs(struct nfsmount *nmp) 6499 { 6500 6501 /* 6502 * Call newnfs_nmcancelreqs() to cause 6503 * any RPCs in progress on the mount point to 6504 * fail. 6505 * This will cause any process waiting for an 6506 * RPC to complete while holding a vnode lock 6507 * on the mounted-on vnode (such as "df" or 6508 * a non-forced "umount") to fail. 6509 * This will unlock the mounted-on vnode so 6510 * a forced dismount can succeed. 6511 * The NFSMNTP_CANCELRPCS flag should be set when this function is 6512 * called. 6513 */ 6514 newnfs_nmcancelreqs(nmp); 6515 } 6516 6517 /* 6518 * Sum up the statfs info for each of the DSs, so that the client will 6519 * receive the total for all DSs. 6520 */ 6521 static int 6522 nfsrv_pnfsstatfs(struct statfs *sf, struct mount *mp) 6523 { 6524 struct statfs *tsf; 6525 struct nfsdevice *ds; 6526 struct vnode **dvpp, **tdvpp, *dvp; 6527 uint64_t tot; 6528 int cnt, error = 0, i; 6529 6530 if (nfsrv_devidcnt <= 0) 6531 return (ENXIO); 6532 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 6533 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 6534 6535 /* Get an array of the dvps for the DSs. */ 6536 tdvpp = dvpp; 6537 i = 0; 6538 NFSDDSLOCK(); 6539 /* First, search for matches for same file system. */ 6540 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6541 if (ds->nfsdev_nmp != NULL && ds->nfsdev_mdsisset != 0 && 6542 fsidcmp(&ds->nfsdev_mdsfsid, &mp->mnt_stat.f_fsid) == 0) { 6543 if (++i > nfsrv_devidcnt) 6544 break; 6545 *tdvpp++ = ds->nfsdev_dvp; 6546 } 6547 } 6548 /* 6549 * If no matches for same file system, total all servers not assigned 6550 * to a file system. 6551 */ 6552 if (i == 0) { 6553 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6554 if (ds->nfsdev_nmp != NULL && 6555 ds->nfsdev_mdsisset == 0) { 6556 if (++i > nfsrv_devidcnt) 6557 break; 6558 *tdvpp++ = ds->nfsdev_dvp; 6559 } 6560 } 6561 } 6562 NFSDDSUNLOCK(); 6563 cnt = i; 6564 6565 /* Do a VFS_STATFS() for each of the DSs and sum them up. */ 6566 tdvpp = dvpp; 6567 for (i = 0; i < cnt && error == 0; i++) { 6568 dvp = *tdvpp++; 6569 error = VFS_STATFS(dvp->v_mount, tsf); 6570 if (error == 0) { 6571 if (sf->f_bsize == 0) { 6572 if (tsf->f_bsize > 0) 6573 sf->f_bsize = tsf->f_bsize; 6574 else 6575 sf->f_bsize = 8192; 6576 } 6577 if (tsf->f_blocks > 0) { 6578 if (sf->f_bsize != tsf->f_bsize) { 6579 tot = tsf->f_blocks * tsf->f_bsize; 6580 sf->f_blocks += (tot / sf->f_bsize); 6581 } else 6582 sf->f_blocks += tsf->f_blocks; 6583 } 6584 if (tsf->f_bfree > 0) { 6585 if (sf->f_bsize != tsf->f_bsize) { 6586 tot = tsf->f_bfree * tsf->f_bsize; 6587 sf->f_bfree += (tot / sf->f_bsize); 6588 } else 6589 sf->f_bfree += tsf->f_bfree; 6590 } 6591 if (tsf->f_bavail > 0) { 6592 if (sf->f_bsize != tsf->f_bsize) { 6593 tot = tsf->f_bavail * tsf->f_bsize; 6594 sf->f_bavail += (tot / sf->f_bsize); 6595 } else 6596 sf->f_bavail += tsf->f_bavail; 6597 } 6598 } 6599 } 6600 free(tsf, M_TEMP); 6601 free(dvpp, M_TEMP); 6602 return (error); 6603 } 6604 6605 /* 6606 * Set an NFSv4 acl. 6607 */ 6608 int 6609 nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p) 6610 { 6611 int error; 6612 6613 if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) { 6614 error = NFSERR_ATTRNOTSUPP; 6615 goto out; 6616 } 6617 /* 6618 * With NFSv4 ACLs, chmod(2) may need to add additional entries. 6619 * Make sure it has enough room for that - splitting every entry 6620 * into two and appending "canonical six" entries at the end. 6621 * Cribbed out of kern/vfs_acl.c - Rick M. 6622 */ 6623 if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) { 6624 error = NFSERR_ATTRNOTSUPP; 6625 goto out; 6626 } 6627 error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p); 6628 if (error == 0) { 6629 error = nfsrv_dssetacl(vp, aclp, cred, p); 6630 if (error == ENOENT) 6631 error = 0; 6632 } 6633 6634 out: 6635 NFSEXITCODE(error); 6636 return (error); 6637 } 6638 6639 /* 6640 * Seek vnode op call (actually it is a VOP_IOCTL()). 6641 * This function is called with the vnode locked, but unlocks and vrele()s 6642 * the vp before returning. 6643 */ 6644 int 6645 nfsvno_seek(struct nfsrv_descript *nd, struct vnode *vp, u_long cmd, 6646 off_t *offp, int content, bool *eofp, struct ucred *cred, NFSPROC_T *p) 6647 { 6648 struct nfsvattr at; 6649 int error, ret; 6650 6651 ASSERT_VOP_LOCKED(vp, "nfsvno_seek vp"); 6652 /* 6653 * Attempt to seek on a DS file. A return of ENOENT implies 6654 * there is no DS file to seek on. 6655 */ 6656 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SEEKDS, NULL, 6657 NULL, NULL, NULL, NULL, offp, content, eofp); 6658 if (error != ENOENT) { 6659 vput(vp); 6660 return (error); 6661 } 6662 6663 /* 6664 * Do the VOP_IOCTL() call. For the case where *offp == file_size, 6665 * VOP_IOCTL() will return ENXIO. However, the correct reply for 6666 * NFSv4.2 is *eofp == true and error == 0 for this case. 6667 */ 6668 NFSVOPUNLOCK(vp); 6669 error = VOP_IOCTL(vp, cmd, offp, 0, cred, p); 6670 *eofp = false; 6671 if (error == ENXIO || (error == 0 && cmd == FIOSEEKHOLE)) { 6672 /* Handle the cases where we might be at EOF. */ 6673 ret = nfsvno_getattr(vp, &at, nd, p, 0, NULL); 6674 if (ret == 0 && *offp == at.na_size) { 6675 *eofp = true; 6676 error = 0; 6677 } 6678 if (ret != 0 && error == 0) 6679 error = ret; 6680 } 6681 vrele(vp); 6682 NFSEXITCODE(error); 6683 return (error); 6684 } 6685 6686 /* 6687 * Allocate vnode op call. 6688 */ 6689 int 6690 nfsvno_allocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6691 NFSPROC_T *p) 6692 { 6693 int error; 6694 off_t olen; 6695 6696 ASSERT_VOP_ELOCKED(vp, "nfsvno_allocate vp"); 6697 /* 6698 * Attempt to allocate on a DS file. A return of ENOENT implies 6699 * there is no DS file to allocate on. 6700 */ 6701 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_ALLOCATE, NULL, 6702 NULL, NULL, NULL, NULL, &len, 0, NULL); 6703 if (error != ENOENT) 6704 return (error); 6705 6706 /* 6707 * Do the actual VOP_ALLOCATE(), looping so long as 6708 * progress is being made, to achieve completion. 6709 */ 6710 do { 6711 olen = len; 6712 error = VOP_ALLOCATE(vp, &off, &len, IO_SYNC, cred); 6713 if (error == 0 && len > 0 && olen > len) 6714 maybe_yield(); 6715 } while (error == 0 && len > 0 && olen > len); 6716 if (error == 0 && len > 0) 6717 error = NFSERR_IO; 6718 NFSEXITCODE(error); 6719 return (error); 6720 } 6721 6722 /* 6723 * Deallocate vnode op call. 6724 */ 6725 int 6726 nfsvno_deallocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6727 NFSPROC_T *p) 6728 { 6729 int error; 6730 off_t olen; 6731 6732 ASSERT_VOP_ELOCKED(vp, "nfsvno_deallocate vp"); 6733 /* 6734 * Attempt to deallocate on a DS file. A return of ENOENT implies 6735 * there is no DS file to deallocate on. 6736 */ 6737 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_DEALLOCATE, NULL, 6738 NULL, NULL, NULL, NULL, &len, 0, NULL); 6739 if (error != ENOENT) 6740 return (error); 6741 6742 /* 6743 * Do the actual VOP_DEALLOCATE(), looping so long as 6744 * progress is being made, to achieve completion. 6745 */ 6746 do { 6747 olen = len; 6748 error = VOP_DEALLOCATE(vp, &off, &len, 0, IO_SYNC, cred); 6749 if (error == 0 && len > 0 && olen > len) 6750 maybe_yield(); 6751 } while (error == 0 && len > 0 && olen > len); 6752 if (error == 0 && len > 0) 6753 error = NFSERR_IO; 6754 NFSEXITCODE(error); 6755 return (error); 6756 } 6757 6758 /* 6759 * Get Extended Atribute vnode op into an mbuf list. 6760 */ 6761 int 6762 nfsvno_getxattr(struct vnode *vp, char *name, uint32_t maxresp, 6763 struct ucred *cred, uint64_t flag, int maxextsiz, struct thread *p, 6764 struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 6765 { 6766 struct iovec *iv; 6767 struct uio io, *uiop = &io; 6768 struct mbuf *m, *m2; 6769 int alen, error, len, tlen; 6770 size_t siz; 6771 6772 /* First, find out the size of the extended attribute. */ 6773 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6774 &siz, cred, p); 6775 if (error != 0) 6776 return (NFSERR_NOXATTR); 6777 if (siz > maxresp - NFS_MAXXDR) 6778 return (NFSERR_XATTR2BIG); 6779 len = siz; 6780 tlen = NFSM_RNDUP(len); 6781 if (tlen > 0) { 6782 /* 6783 * If cnt > MCLBYTES and the reply will not be saved, use 6784 * ext_pgs mbufs for TLS. 6785 * For NFSv4.0, we do not know for sure if the reply will 6786 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 6787 * Always use ext_pgs mbufs if ND_EXTPG is set. 6788 */ 6789 if ((flag & ND_EXTPG) != 0 || (tlen > MCLBYTES && 6790 (flag & (ND_TLS | ND_SAVEREPLY)) == ND_TLS && 6791 (flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4)) 6792 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(tlen, 6793 maxextsiz, &m, &m2, &iv); 6794 else 6795 uiop->uio_iovcnt = nfsrv_createiovec(tlen, &m, &m2, 6796 &iv); 6797 uiop->uio_iov = iv; 6798 } else { 6799 uiop->uio_iovcnt = 0; 6800 uiop->uio_iov = iv = NULL; 6801 m = m2 = NULL; 6802 } 6803 uiop->uio_offset = 0; 6804 uiop->uio_resid = tlen; 6805 uiop->uio_rw = UIO_READ; 6806 uiop->uio_segflg = UIO_SYSSPACE; 6807 uiop->uio_td = p; 6808 #ifdef MAC 6809 error = mac_vnode_check_getextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6810 name); 6811 if (error != 0) 6812 goto out; 6813 #endif 6814 6815 if (tlen > 0) 6816 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6817 NULL, cred, p); 6818 if (error != 0) 6819 goto out; 6820 if (uiop->uio_resid > 0) { 6821 alen = tlen; 6822 len = tlen - uiop->uio_resid; 6823 tlen = NFSM_RNDUP(len); 6824 if (alen != tlen) 6825 printf("nfsvno_getxattr: weird size read\n"); 6826 if (tlen == 0) { 6827 m_freem(m); 6828 m = m2 = NULL; 6829 } else if (alen != tlen || tlen != len) 6830 m2 = nfsrv_adj(m, alen - tlen, tlen - len); 6831 } 6832 *lenp = len; 6833 *mpp = m; 6834 *mpendp = m2; 6835 6836 out: 6837 if (error != 0) { 6838 if (m != NULL) 6839 m_freem(m); 6840 *lenp = 0; 6841 } 6842 free(iv, M_TEMP); 6843 NFSEXITCODE(error); 6844 return (error); 6845 } 6846 6847 /* 6848 * Set Extended attribute vnode op from an mbuf list. 6849 */ 6850 int 6851 nfsvno_setxattr(struct vnode *vp, char *name, int len, struct mbuf *m, 6852 char *cp, struct ucred *cred, struct thread *p) 6853 { 6854 struct iovec *iv; 6855 struct uio uio, *uiop = &uio; 6856 int cnt, error; 6857 6858 error = 0; 6859 #ifdef MAC 6860 error = mac_vnode_check_setextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6861 name); 6862 #endif 6863 if (error != 0) 6864 goto out; 6865 6866 uiop->uio_rw = UIO_WRITE; 6867 uiop->uio_segflg = UIO_SYSSPACE; 6868 uiop->uio_td = p; 6869 uiop->uio_offset = 0; 6870 uiop->uio_resid = len; 6871 if (len > 0) { 6872 error = nfsrv_createiovecw(len, m, cp, &iv, &cnt); 6873 uiop->uio_iov = iv; 6874 uiop->uio_iovcnt = cnt; 6875 } else { 6876 uiop->uio_iov = iv = NULL; 6877 uiop->uio_iovcnt = 0; 6878 } 6879 if (error == 0) { 6880 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6881 cred, p); 6882 if (error == 0) { 6883 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6884 nfsvno_updateds(vp, cred, p); 6885 error = VOP_FSYNC(vp, MNT_WAIT, p); 6886 } 6887 free(iv, M_TEMP); 6888 } 6889 6890 out: 6891 NFSEXITCODE(error); 6892 return (error); 6893 } 6894 6895 /* 6896 * For a pNFS server, the DS file's ctime and 6897 * va_filerev (TimeMetadata and Change) needs to 6898 * be updated. This is a hack, but works by 6899 * flipping the S_ISGID bit in va_mode and then 6900 * flipping it back. 6901 * It does result in two MDS->DS RPCs, but creating 6902 * a custom RPC just to do this seems overkill, since 6903 * Setxattr/Rmxattr will not be done that frequently. 6904 * If it fails part way through, that is not too 6905 * serious, since the DS file is never executed. 6906 */ 6907 static void 6908 nfsvno_updateds(struct vnode *vp, struct ucred *cred, NFSPROC_T *p) 6909 { 6910 struct nfsvattr nva; 6911 int ret; 6912 u_short tmode; 6913 6914 ret = VOP_GETATTR(vp, &nva.na_vattr, cred); 6915 if (ret == 0) { 6916 tmode = nva.na_mode; 6917 NFSVNO_ATTRINIT(&nva); 6918 tmode ^= S_ISGID; 6919 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6920 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6921 NFSPROC_SETATTR, NULL, NULL, NULL, &nva, 6922 NULL, NULL, 0, NULL); 6923 if (ret == 0) { 6924 tmode ^= S_ISGID; 6925 NFSVNO_SETATTRVAL(&nva, mode, tmode); 6926 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 6927 NFSPROC_SETATTR, NULL, NULL, NULL, 6928 &nva, NULL, NULL, 0, NULL); 6929 } 6930 } 6931 } 6932 6933 /* 6934 * Remove Extended attribute vnode op. 6935 */ 6936 int 6937 nfsvno_rmxattr(struct nfsrv_descript *nd, struct vnode *vp, char *name, 6938 struct ucred *cred, struct thread *p) 6939 { 6940 int error; 6941 6942 /* 6943 * Get rid of any delegations. I am not sure why this is required, 6944 * but RFC-8276 says so. 6945 */ 6946 error = nfsrv_checkremove(vp, 0, nd, nd->nd_clientid, p); 6947 if (error != 0) 6948 goto out; 6949 #ifdef MAC 6950 error = mac_vnode_check_deleteextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6951 name); 6952 if (error != 0) 6953 goto out; 6954 #endif 6955 6956 error = VOP_DELETEEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, cred, p); 6957 if (error == EOPNOTSUPP) 6958 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6959 cred, p); 6960 if (error == 0) { 6961 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 6962 nfsvno_updateds(vp, cred, p); 6963 error = VOP_FSYNC(vp, MNT_WAIT, p); 6964 } 6965 out: 6966 NFSEXITCODE(error); 6967 return (error); 6968 } 6969 6970 /* 6971 * List Extended Atribute vnode op into an mbuf list. 6972 */ 6973 int 6974 nfsvno_listxattr(struct vnode *vp, uint64_t cookie, struct ucred *cred, 6975 struct thread *p, u_char **bufp, uint32_t *lenp, bool *eofp) 6976 { 6977 struct iovec iv; 6978 struct uio io; 6979 int error; 6980 size_t siz; 6981 6982 *bufp = NULL; 6983 /* First, find out the size of the extended attribute. */ 6984 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, NULL, &siz, cred, 6985 p); 6986 if (error != 0) 6987 return (NFSERR_NOXATTR); 6988 if (siz <= cookie) { 6989 *lenp = 0; 6990 *eofp = true; 6991 goto out; 6992 } 6993 if (siz > cookie + *lenp) { 6994 siz = cookie + *lenp; 6995 *eofp = false; 6996 } else 6997 *eofp = true; 6998 /* Just choose a sanity limit of 10Mbytes for malloc(M_TEMP). */ 6999 if (siz > 10 * 1024 * 1024) { 7000 error = NFSERR_XATTR2BIG; 7001 goto out; 7002 } 7003 *bufp = malloc(siz, M_TEMP, M_WAITOK); 7004 iv.iov_base = *bufp; 7005 iv.iov_len = siz; 7006 io.uio_iovcnt = 1; 7007 io.uio_iov = &iv; 7008 io.uio_offset = 0; 7009 io.uio_resid = siz; 7010 io.uio_rw = UIO_READ; 7011 io.uio_segflg = UIO_SYSSPACE; 7012 io.uio_td = p; 7013 #ifdef MAC 7014 error = mac_vnode_check_listextattr(cred, vp, EXTATTR_NAMESPACE_USER); 7015 if (error != 0) 7016 goto out; 7017 #endif 7018 7019 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, &io, NULL, cred, 7020 p); 7021 if (error != 0) 7022 goto out; 7023 if (io.uio_resid > 0) 7024 siz -= io.uio_resid; 7025 *lenp = siz; 7026 7027 out: 7028 if (error != 0) { 7029 free(*bufp, M_TEMP); 7030 *bufp = NULL; 7031 } 7032 NFSEXITCODE(error); 7033 return (error); 7034 } 7035 7036 /* 7037 * Trim trailing data off the mbuf list being built. 7038 */ 7039 void 7040 nfsm_trimtrailing(struct nfsrv_descript *nd, struct mbuf *mb, char *bpos, 7041 int bextpg, int bextpgsiz) 7042 { 7043 vm_page_t pg; 7044 int fullpgsiz, i; 7045 7046 if (mb->m_next != NULL) { 7047 m_freem(mb->m_next); 7048 mb->m_next = NULL; 7049 } 7050 if ((mb->m_flags & M_EXTPG) != 0) { 7051 KASSERT(bextpg >= 0 && bextpg < mb->m_epg_npgs, 7052 ("nfsm_trimtrailing: bextpg out of range")); 7053 KASSERT(bpos == (char *)(void *) 7054 PHYS_TO_DMAP(mb->m_epg_pa[bextpg]) + PAGE_SIZE - bextpgsiz, 7055 ("nfsm_trimtrailing: bextpgsiz bad!")); 7056 7057 /* First, get rid of any pages after this position. */ 7058 for (i = mb->m_epg_npgs - 1; i > bextpg; i--) { 7059 pg = PHYS_TO_VM_PAGE(mb->m_epg_pa[i]); 7060 vm_page_unwire_noq(pg); 7061 vm_page_free(pg); 7062 } 7063 mb->m_epg_npgs = bextpg + 1; 7064 if (bextpg == 0) 7065 fullpgsiz = PAGE_SIZE - mb->m_epg_1st_off; 7066 else 7067 fullpgsiz = PAGE_SIZE; 7068 mb->m_epg_last_len = fullpgsiz - bextpgsiz; 7069 mb->m_len = m_epg_pagelen(mb, 0, mb->m_epg_1st_off); 7070 for (i = 1; i < mb->m_epg_npgs; i++) 7071 mb->m_len += m_epg_pagelen(mb, i, 0); 7072 nd->nd_bextpgsiz = bextpgsiz; 7073 nd->nd_bextpg = bextpg; 7074 } else 7075 mb->m_len = bpos - mtod(mb, char *); 7076 nd->nd_mb = mb; 7077 nd->nd_bpos = bpos; 7078 } 7079 7080 7081 /* 7082 * Check to see if a put file handle operation should test for 7083 * NFSERR_WRONGSEC, although NFSv3 actually returns NFSERR_AUTHERR. 7084 * When Open is the next operation, NFSERR_WRONGSEC cannot be 7085 * replied for the Open cases that use a component. This can 7086 * be identified by the fact that the file handle's type is VDIR. 7087 */ 7088 bool 7089 nfsrv_checkwrongsec(struct nfsrv_descript *nd, int nextop, __enum_uint8(vtype) vtyp) 7090 { 7091 7092 if ((nd->nd_flag & ND_NFSV4) == 0) 7093 return (true); 7094 7095 if ((nd->nd_flag & ND_LASTOP) != 0) 7096 return (false); 7097 7098 if (nextop == NFSV4OP_PUTROOTFH || nextop == NFSV4OP_PUTFH || 7099 nextop == NFSV4OP_PUTPUBFH || nextop == NFSV4OP_RESTOREFH || 7100 nextop == NFSV4OP_LOOKUP || nextop == NFSV4OP_LOOKUPP || 7101 nextop == NFSV4OP_SECINFO || nextop == NFSV4OP_SECINFONONAME) 7102 return (false); 7103 if (nextop == NFSV4OP_OPEN && vtyp == VDIR) 7104 return (false); 7105 return (true); 7106 } 7107 7108 /* 7109 * Check DSs marked no space. 7110 */ 7111 void 7112 nfsrv_checknospc(void) 7113 { 7114 struct statfs *tsf; 7115 struct nfsdevice *ds; 7116 struct vnode **dvpp, **tdvpp, *dvp; 7117 char *devid, *tdevid; 7118 int cnt, error = 0, i; 7119 7120 if (nfsrv_devidcnt <= 0) 7121 return; 7122 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 7123 devid = malloc(nfsrv_devidcnt * NFSX_V4DEVICEID, M_TEMP, M_WAITOK); 7124 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 7125 7126 /* Get an array of the dvps for the DSs. */ 7127 tdvpp = dvpp; 7128 tdevid = devid; 7129 i = 0; 7130 NFSDDSLOCK(); 7131 /* First, search for matches for same file system. */ 7132 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 7133 if (ds->nfsdev_nmp != NULL && ds->nfsdev_nospc) { 7134 if (++i > nfsrv_devidcnt) 7135 break; 7136 *tdvpp++ = ds->nfsdev_dvp; 7137 NFSBCOPY(ds->nfsdev_deviceid, tdevid, NFSX_V4DEVICEID); 7138 tdevid += NFSX_V4DEVICEID; 7139 } 7140 } 7141 NFSDDSUNLOCK(); 7142 7143 /* Do a VFS_STATFS() for each of the DSs and clear no space. */ 7144 cnt = i; 7145 tdvpp = dvpp; 7146 tdevid = devid; 7147 for (i = 0; i < cnt && error == 0; i++) { 7148 dvp = *tdvpp++; 7149 error = VFS_STATFS(dvp->v_mount, tsf); 7150 if (error == 0 && tsf->f_bavail > 0) { 7151 NFSD_DEBUG(1, "nfsrv_checknospc: reset nospc\n"); 7152 nfsrv_marknospc(tdevid, false); 7153 } 7154 tdevid += NFSX_V4DEVICEID; 7155 } 7156 free(tsf, M_TEMP); 7157 free(dvpp, M_TEMP); 7158 free(devid, M_TEMP); 7159 } 7160 7161 /* 7162 * Initialize everything that needs to be initialized for a vnet. 7163 */ 7164 static void 7165 nfsrv_vnetinit(const void *unused __unused) 7166 { 7167 7168 nfsd_mntinit(); 7169 } 7170 VNET_SYSINIT(nfsrv_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7171 nfsrv_vnetinit, NULL); 7172 7173 /* 7174 * Clean up everything that is in a vnet and needs to be 7175 * done when the jail is destroyed or the module unloaded. 7176 */ 7177 static void 7178 nfsrv_cleanup(const void *unused __unused) 7179 { 7180 int i; 7181 7182 NFSD_LOCK(); 7183 if (!NFSD_VNET(nfsrv_mntinited)) { 7184 NFSD_UNLOCK(); 7185 return; 7186 } 7187 NFSD_VNET(nfsrv_mntinited) = false; 7188 NFSD_UNLOCK(); 7189 7190 /* Clean out all NFSv4 state. */ 7191 nfsrv_throwawayallstate(curthread); 7192 7193 /* Clean the NFS server reply cache */ 7194 nfsrvd_cleancache(); 7195 7196 /* Clean out v4root exports. */ 7197 if (NFSD_VNET(nfsv4root_mnt)->mnt_export != NULL) { 7198 vfs_free_addrlist(NFSD_VNET(nfsv4root_mnt)->mnt_export); 7199 free(NFSD_VNET(nfsv4root_mnt)->mnt_export, M_MOUNT); 7200 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 7201 } 7202 7203 /* Free up the krpc server pool. */ 7204 if (NFSD_VNET(nfsrvd_pool) != NULL) 7205 svcpool_destroy(NFSD_VNET(nfsrvd_pool)); 7206 7207 /* and get rid of the locks */ 7208 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 7209 mtx_destroy(&NFSD_VNET(nfsrchash_table)[i].mtx); 7210 mtx_destroy(&NFSD_VNET(nfsrcahash_table)[i].mtx); 7211 } 7212 mtx_destroy(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx); 7213 for (i = 0; i < nfsrv_sessionhashsize; i++) 7214 mtx_destroy(&NFSD_VNET(nfssessionhash)[i].mtx); 7215 lockdestroy(&NFSD_VNET(nfsv4root_mnt)->mnt_explock); 7216 free(NFSD_VNET(nfsrvudphashtbl), M_NFSRVCACHE); 7217 free(NFSD_VNET(nfsrchash_table), M_NFSRVCACHE); 7218 free(NFSD_VNET(nfsrcahash_table), M_NFSRVCACHE); 7219 free(NFSD_VNET(nfsclienthash), M_NFSDCLIENT); 7220 free(NFSD_VNET(nfslockhash), M_NFSDLOCKFILE); 7221 free(NFSD_VNET(nfssessionhash), M_NFSDSESSION); 7222 free(NFSD_VNET(nfsv4root_mnt), M_TEMP); 7223 NFSD_VNET(nfsv4root_mnt) = NULL; 7224 } 7225 VNET_SYSUNINIT(nfsrv_cleanup, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7226 nfsrv_cleanup, NULL); 7227 7228 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 7229 7230 /* 7231 * Called once to initialize data structures... 7232 */ 7233 static int 7234 nfsd_modevent(module_t mod, int type, void *data) 7235 { 7236 int error = 0, i; 7237 static int loaded = 0; 7238 7239 switch (type) { 7240 case MOD_LOAD: 7241 if (loaded) 7242 goto out; 7243 newnfs_portinit(); 7244 mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); 7245 mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); 7246 mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF); 7247 mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF); 7248 #ifdef VV_DISABLEDELEG 7249 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 7250 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 7251 #endif 7252 nfsd_call_nfsd = nfssvc_nfsd; 7253 loaded = 1; 7254 break; 7255 7256 case MOD_UNLOAD: 7257 if (newnfs_numnfsd != 0) { 7258 error = EBUSY; 7259 break; 7260 } 7261 7262 #ifdef VV_DISABLEDELEG 7263 vn_deleg_ops.vndeleg_recall = NULL; 7264 vn_deleg_ops.vndeleg_disable = NULL; 7265 #endif 7266 nfsd_call_nfsd = NULL; 7267 mtx_destroy(&nfsrc_udpmtx); 7268 mtx_destroy(&nfs_v4root_mutex); 7269 mtx_destroy(&nfsrv_dontlistlock_mtx); 7270 mtx_destroy(&nfsrv_recalllock_mtx); 7271 if (nfslayouthash != NULL) { 7272 for (i = 0; i < nfsrv_layouthashsize; i++) 7273 mtx_destroy(&nfslayouthash[i].mtx); 7274 free(nfslayouthash, M_NFSDSESSION); 7275 } 7276 loaded = 0; 7277 break; 7278 default: 7279 error = EOPNOTSUPP; 7280 break; 7281 } 7282 7283 out: 7284 NFSEXITCODE(error); 7285 return (error); 7286 } 7287 static moduledata_t nfsd_mod = { 7288 "nfsd", 7289 nfsd_modevent, 7290 NULL, 7291 }; 7292 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 7293 7294 /* So that loader and kldload(2) can find us, wherever we are.. */ 7295 MODULE_VERSION(nfsd, 1); 7296 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 7297 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 7298 MODULE_DEPEND(nfsd, krpc, 1, 1, 1); 7299 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 7300