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 }; 125 126 static int nfsrv_createiovec(int, struct mbuf **, struct mbuf **, 127 struct iovec **); 128 static int nfsrv_createiovec_extpgs(int, int, struct mbuf **, 129 struct mbuf **, struct iovec **); 130 static int nfsrv_createiovecw(int, struct mbuf *, char *, struct iovec **, 131 int *); 132 static void nfs_dtypetovtype(struct nfsvattr *, struct vnode *, uint8_t); 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 static bool nfsrv_recalldeleg = false; 192 SYSCTL_BOOL(_vfs_nfsd, OID_AUTO, recalldeleg, CTLFLAG_RW, 193 &nfsrv_recalldeleg, 0, 194 "When set remove/rename recalls delegations for same client"); 195 196 /* 197 * nfsrv_dsdirsize can only be increased and only when the nfsd threads are 198 * not running. 199 * The dsN subdirectories for the increased values must have been created 200 * on all DS servers before this increase is done. 201 */ 202 u_int nfsrv_dsdirsize = 20; 203 static int 204 sysctl_dsdirsize(SYSCTL_HANDLER_ARGS) 205 { 206 int error, newdsdirsize; 207 208 newdsdirsize = nfsrv_dsdirsize; 209 error = sysctl_handle_int(oidp, &newdsdirsize, 0, req); 210 if (error != 0 || req->newptr == NULL) 211 return (error); 212 if (newdsdirsize <= nfsrv_dsdirsize || newdsdirsize > 10000 || 213 newnfs_numnfsd != 0) 214 return (EINVAL); 215 nfsrv_dsdirsize = newdsdirsize; 216 return (0); 217 } 218 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, dsdirsize, 219 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, 0, sizeof(nfsrv_dsdirsize), 220 sysctl_dsdirsize, "IU", "Number of dsN subdirs on the DS servers"); 221 222 /* 223 * nfs_srvmaxio can only be increased and only when the nfsd threads are 224 * not running. The setting must be a power of 2, with the current limit of 225 * 1Mbyte. 226 */ 227 static int 228 sysctl_srvmaxio(SYSCTL_HANDLER_ARGS) 229 { 230 int error; 231 u_int newsrvmaxio; 232 uint64_t tval; 233 234 newsrvmaxio = nfs_srvmaxio; 235 error = sysctl_handle_int(oidp, &newsrvmaxio, 0, req); 236 if (error != 0 || req->newptr == NULL) 237 return (error); 238 if (newsrvmaxio == nfs_srvmaxio) 239 return (0); 240 if (newsrvmaxio < nfs_srvmaxio) { 241 printf("nfsd: vfs.nfsd.srvmaxio can only be increased\n"); 242 return (EINVAL); 243 } 244 if (newsrvmaxio > 1048576) { 245 printf("nfsd: vfs.nfsd.srvmaxio cannot be > 1Mbyte\n"); 246 return (EINVAL); 247 } 248 if ((newsrvmaxio & (newsrvmaxio - 1)) != 0) { 249 printf("nfsd: vfs.nfsd.srvmaxio must be a power of 2\n"); 250 return (EINVAL); 251 } 252 253 /* 254 * Check that kern.ipc.maxsockbuf is large enough for 255 * newsrviomax, given the setting of vfs.nfs.bufpackets. 256 */ 257 if ((newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets > 258 sb_max_adj) { 259 /* 260 * Suggest vfs.nfs.bufpackets * maximum RPC message for 261 * sb_max_adj. 262 */ 263 tval = (newsrvmaxio + NFS_MAXXDR) * nfs_bufpackets; 264 265 /* 266 * Convert suggested sb_max_adj value to a suggested 267 * sb_max value, which is what is set via kern.ipc.maxsockbuf. 268 * Perform the inverse calculation of (from uipc_sockbuf.c): 269 * sb_max_adj = (u_quad_t)sb_max * MCLBYTES / 270 * (MSIZE + MCLBYTES); 271 * XXX If the calculation of sb_max_adj from sb_max changes, 272 * this calculation must be changed as well. 273 */ 274 tval *= (MSIZE + MCLBYTES); /* Brackets for readability. */ 275 tval += MCLBYTES - 1; /* Round up divide. */ 276 tval /= MCLBYTES; 277 printf("nfsd: set kern.ipc.maxsockbuf to a minimum of " 278 "%ju to support %ubyte NFS I/O\n", (uintmax_t)tval, 279 newsrvmaxio); 280 return (EINVAL); 281 } 282 283 NFSD_LOCK(); 284 if (newnfs_numnfsd != 0) { 285 NFSD_UNLOCK(); 286 printf("nfsd: cannot set vfs.nfsd.srvmaxio when nfsd " 287 "threads are running\n"); 288 return (EINVAL); 289 } 290 291 292 nfs_srvmaxio = newsrvmaxio; 293 NFSD_UNLOCK(); 294 return (0); 295 } 296 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, srvmaxio, 297 CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RW, NULL, 0, 298 sysctl_srvmaxio, "IU", "Maximum I/O size in bytes"); 299 300 static int 301 sysctl_dolocallocks(SYSCTL_HANDLER_ARGS) 302 { 303 int error, igotlock, newdolocallocks; 304 305 newdolocallocks = nfsrv_dolocallocks; 306 error = sysctl_handle_int(oidp, &newdolocallocks, 0, req); 307 if (error != 0 || req->newptr == NULL) 308 return (error); 309 if (newdolocallocks == nfsrv_dolocallocks) 310 return (0); 311 if (jailed(curthread->td_ucred)) 312 return (EINVAL); 313 314 NFSLOCKV4ROOTMUTEX(); 315 do { 316 igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 317 NFSV4ROOTLOCKMUTEXPTR, NULL); 318 } while (!igotlock); 319 NFSUNLOCKV4ROOTMUTEX(); 320 321 nfsrv_dolocallocks = newdolocallocks; 322 323 NFSLOCKV4ROOTMUTEX(); 324 nfsv4_unlock(&nfsv4rootfs_lock, 0); 325 NFSUNLOCKV4ROOTMUTEX(); 326 return (0); 327 } 328 SYSCTL_PROC(_vfs_nfsd, OID_AUTO, enable_locallocks, 329 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RW, NULL, 0, 330 sysctl_dolocallocks, "IU", "Enable nfsd to acquire local locks on files"); 331 332 #define MAX_REORDERED_RPC 16 333 #define NUM_HEURISTIC 1031 334 #define NHUSE_INIT 64 335 #define NHUSE_INC 16 336 #define NHUSE_MAX 2048 337 338 static struct nfsheur { 339 struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 340 off_t nh_nextoff; /* next offset for sequential detection */ 341 int nh_use; /* use count for selection */ 342 int nh_seqcount; /* heuristic */ 343 } nfsheur[NUM_HEURISTIC]; 344 345 /* 346 * Heuristic to detect sequential operation. 347 */ 348 static struct nfsheur * 349 nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 350 { 351 struct nfsheur *nh; 352 int hi, try; 353 354 /* Locate best candidate. */ 355 try = 32; 356 hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 357 nh = &nfsheur[hi]; 358 while (try--) { 359 if (nfsheur[hi].nh_vp == vp) { 360 nh = &nfsheur[hi]; 361 break; 362 } 363 if (nfsheur[hi].nh_use > 0) 364 --nfsheur[hi].nh_use; 365 hi = (hi + 1) % NUM_HEURISTIC; 366 if (nfsheur[hi].nh_use < nh->nh_use) 367 nh = &nfsheur[hi]; 368 } 369 370 /* Initialize hint if this is a new file. */ 371 if (nh->nh_vp != vp) { 372 nh->nh_vp = vp; 373 nh->nh_nextoff = uio->uio_offset; 374 nh->nh_use = NHUSE_INIT; 375 if (uio->uio_offset == 0) 376 nh->nh_seqcount = 4; 377 else 378 nh->nh_seqcount = 1; 379 } 380 381 /* Calculate heuristic. */ 382 if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 383 uio->uio_offset == nh->nh_nextoff) { 384 /* See comments in vfs_vnops.c:sequential_heuristic(). */ 385 nh->nh_seqcount += howmany(uio->uio_resid, 16384); 386 if (nh->nh_seqcount > IO_SEQMAX) 387 nh->nh_seqcount = IO_SEQMAX; 388 } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 389 imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 390 /* Probably a reordered RPC, leave seqcount alone. */ 391 } else if (nh->nh_seqcount > 1) { 392 nh->nh_seqcount /= 2; 393 } else { 394 nh->nh_seqcount = 0; 395 } 396 nh->nh_use += NHUSE_INC; 397 if (nh->nh_use > NHUSE_MAX) 398 nh->nh_use = NHUSE_MAX; 399 return (nh); 400 } 401 402 /* 403 * Get attributes into nfsvattr structure. 404 */ 405 int 406 nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, 407 struct nfsrv_descript *nd, struct thread *p, int vpislocked, 408 nfsattrbit_t *attrbitp) 409 { 410 int error, gotattr, lockedit = 0; 411 struct nfsvattr na; 412 413 if (vpislocked == 0) { 414 /* 415 * When vpislocked == 0, the vnode is either exclusively 416 * locked by this thread or not locked by this thread. 417 * As such, shared lock it, if not exclusively locked. 418 */ 419 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 420 lockedit = 1; 421 NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 422 } 423 } 424 425 /* 426 * Acquire the Change, Size, TimeAccess, TimeModify and SpaceUsed 427 * attributes, as required. 428 * This needs to be done for regular files if: 429 * - non-NFSv4 RPCs or 430 * - when attrbitp == NULL or 431 * - an NFSv4 RPC with any of the above attributes in attrbitp. 432 * A return of 0 for nfsrv_proxyds() indicates that it has acquired 433 * these attributes. nfsrv_proxyds() will return an error if the 434 * server is not a pNFS one. 435 */ 436 gotattr = 0; 437 if (vp->v_type == VREG && nfsrv_devidcnt > 0 && (attrbitp == NULL || 438 (nd->nd_flag & ND_NFSV4) == 0 || 439 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_CHANGE) || 440 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) || 441 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESS) || 442 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFY) || 443 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEUSED))) { 444 error = nfsrv_proxyds(vp, 0, 0, nd->nd_cred, p, 445 NFSPROC_GETATTR, NULL, NULL, NULL, &na, NULL, NULL, 0, 446 NULL); 447 if (error == 0) 448 gotattr = 1; 449 } 450 451 nvap->na_bsdflags = 0; 452 error = VOP_GETATTR(vp, &nvap->na_vattr, nd->nd_cred); 453 if (lockedit != 0) 454 NFSVOPUNLOCK(vp); 455 456 /* 457 * If we got the Change, Size and Modify Time from the DS, 458 * replace them. 459 */ 460 if (gotattr != 0) { 461 nvap->na_atime = na.na_atime; 462 nvap->na_mtime = na.na_mtime; 463 nvap->na_filerev = na.na_filerev; 464 nvap->na_size = na.na_size; 465 nvap->na_bytes = na.na_bytes; 466 } 467 NFSD_DEBUG(4, "nfsvno_getattr: gotattr=%d err=%d chg=%ju\n", gotattr, 468 error, (uintmax_t)na.na_filerev); 469 470 NFSEXITCODE(error); 471 return (error); 472 } 473 474 /* 475 * Get a file handle for a vnode. 476 */ 477 int 478 nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 479 { 480 int error; 481 482 NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 483 fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 484 error = VOP_VPTOFH(vp, &fhp->fh_fid); 485 486 NFSEXITCODE(error); 487 return (error); 488 } 489 490 /* 491 * Perform access checking for vnodes obtained from file handles that would 492 * refer to files already opened by a Unix client. You cannot just use 493 * vn_writechk() and VOP_ACCESSX() for two reasons. 494 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 495 * case. 496 * 2 - The owner is to be given access irrespective of mode bits for some 497 * operations, so that processes that chmod after opening a file don't 498 * break. 499 */ 500 int 501 nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 502 struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 503 u_int32_t *supportedtypep) 504 { 505 struct vattr vattr; 506 int error = 0, getret = 0; 507 508 if (vpislocked == 0) { 509 if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 510 error = EPERM; 511 goto out; 512 } 513 } 514 if (accmode & VWRITE) { 515 /* Just vn_writechk() changed to check rdonly */ 516 /* 517 * Disallow write attempts on read-only file systems; 518 * unless the file is a socket or a block or character 519 * device resident on the file system. 520 */ 521 if (NFSVNO_EXRDONLY(exp) || 522 (vp->v_mount->mnt_flag & MNT_RDONLY)) { 523 switch (vp->v_type) { 524 case VREG: 525 case VDIR: 526 case VLNK: 527 error = EROFS; 528 default: 529 break; 530 } 531 } 532 /* 533 * If there's shared text associated with 534 * the inode, try to free it up once. If 535 * we fail, we can't allow writing. 536 */ 537 if (VOP_IS_TEXT(vp) && error == 0) 538 error = ETXTBSY; 539 } 540 if (error != 0) { 541 if (vpislocked == 0) 542 NFSVOPUNLOCK(vp); 543 goto out; 544 } 545 546 /* 547 * Should the override still be applied when ACLs are enabled? 548 */ 549 error = VOP_ACCESSX(vp, accmode, cred, p); 550 if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 551 /* 552 * Try again with VEXPLICIT_DENY, to see if the test for 553 * deletion is supported. 554 */ 555 error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 556 if (error == 0) { 557 if (vp->v_type == VDIR) { 558 accmode &= ~(VDELETE | VDELETE_CHILD); 559 accmode |= VWRITE; 560 error = VOP_ACCESSX(vp, accmode, cred, p); 561 } else if (supportedtypep != NULL) { 562 *supportedtypep &= ~NFSACCESS_DELETE; 563 } 564 } 565 } 566 567 /* 568 * Allow certain operations for the owner (reads and writes 569 * on files that are already open). 570 */ 571 if (override != NFSACCCHK_NOOVERRIDE && 572 (error == EPERM || error == EACCES)) { 573 if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 574 error = 0; 575 else if (override & NFSACCCHK_ALLOWOWNER) { 576 getret = VOP_GETATTR(vp, &vattr, cred); 577 if (getret == 0 && cred->cr_uid == vattr.va_uid) 578 error = 0; 579 } 580 } 581 if (vpislocked == 0) 582 NFSVOPUNLOCK(vp); 583 584 out: 585 NFSEXITCODE(error); 586 return (error); 587 } 588 589 /* 590 * Set attribute(s) vnop. 591 */ 592 int 593 nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 594 struct thread *p, struct nfsexstuff *exp) 595 { 596 u_quad_t savsize = 0; 597 int error, savedit; 598 time_t savbtime; 599 600 /* 601 * If this is an exported file system and a pNFS service is running, 602 * don't VOP_SETATTR() of size for the MDS file system. 603 */ 604 savedit = 0; 605 error = 0; 606 if (vp->v_type == VREG && (vp->v_mount->mnt_flag & MNT_EXPORTED) != 0 && 607 nfsrv_devidcnt != 0 && nvap->na_vattr.va_size != VNOVAL && 608 nvap->na_vattr.va_size > 0) { 609 savsize = nvap->na_vattr.va_size; 610 nvap->na_vattr.va_size = VNOVAL; 611 if (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 612 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 613 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 614 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 615 nvap->na_vattr.va_mtime.tv_sec != VNOVAL) 616 savedit = 1; 617 else 618 savedit = 2; 619 } 620 if (savedit != 2) 621 error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 622 if (savedit != 0) 623 nvap->na_vattr.va_size = savsize; 624 if (error == 0 && (nvap->na_vattr.va_uid != (uid_t)VNOVAL || 625 nvap->na_vattr.va_gid != (gid_t)VNOVAL || 626 nvap->na_vattr.va_size != VNOVAL || 627 nvap->na_vattr.va_mode != (mode_t)VNOVAL || 628 nvap->na_vattr.va_atime.tv_sec != VNOVAL || 629 nvap->na_vattr.va_mtime.tv_sec != VNOVAL)) { 630 /* Never modify birthtime on a DS file. */ 631 savbtime = nvap->na_vattr.va_birthtime.tv_sec; 632 nvap->na_vattr.va_birthtime.tv_sec = VNOVAL; 633 /* For a pNFS server, set the attributes on the DS file. */ 634 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETATTR, 635 NULL, NULL, NULL, nvap, NULL, NULL, 0, NULL); 636 nvap->na_vattr.va_birthtime.tv_sec = savbtime; 637 if (error == ENOENT) 638 error = 0; 639 } 640 NFSEXITCODE(error); 641 return (error); 642 } 643 644 /* 645 * Set up nameidata for a lookup() call and do it. 646 */ 647 int 648 nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 649 struct vnode *dp, int islocked, struct nfsexstuff *exp, 650 struct vnode **retdirp) 651 { 652 struct componentname *cnp = &ndp->ni_cnd; 653 int i; 654 struct iovec aiov; 655 struct uio auio; 656 int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 657 int error = 0; 658 char *cp; 659 660 *retdirp = NULL; 661 cnp->cn_nameptr = cnp->cn_pnbuf; 662 ndp->ni_lcf = 0; 663 /* 664 * Extract and set starting directory. 665 */ 666 if (dp->v_type != VDIR) { 667 if (islocked) 668 vput(dp); 669 else 670 vrele(dp); 671 nfsvno_relpathbuf(ndp); 672 error = ENOTDIR; 673 goto out1; 674 } 675 if (islocked) 676 NFSVOPUNLOCK(dp); 677 VREF(dp); 678 *retdirp = dp; 679 if (NFSVNO_EXRDONLY(exp)) 680 cnp->cn_flags |= RDONLY; 681 ndp->ni_segflg = UIO_SYSSPACE; 682 683 if (nd->nd_flag & ND_PUBLOOKUP) { 684 ndp->ni_loopcnt = 0; 685 if (cnp->cn_pnbuf[0] == '/') { 686 vrele(dp); 687 /* 688 * Check for degenerate pathnames here, since lookup() 689 * panics on them. 690 */ 691 for (i = 1; i < ndp->ni_pathlen; i++) 692 if (cnp->cn_pnbuf[i] != '/') 693 break; 694 if (i == ndp->ni_pathlen) { 695 error = NFSERR_ACCES; 696 goto out; 697 } 698 dp = rootvnode; 699 VREF(dp); 700 } 701 } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 702 (nd->nd_flag & ND_NFSV4) == 0) { 703 /* 704 * Only cross mount points for NFSv4 when doing a 705 * mount while traversing the file system above 706 * the mount point, unless nfsrv_enable_crossmntpt is set. 707 */ 708 cnp->cn_flags |= NOCROSSMOUNT; 709 } 710 711 /* 712 * Initialize for scan, set ni_startdir and bump ref on dp again 713 * because lookup() will dereference ni_startdir. 714 */ 715 716 ndp->ni_startdir = dp; 717 ndp->ni_rootdir = rootvnode; 718 ndp->ni_topdir = NULL; 719 720 if (!lockleaf) 721 cnp->cn_flags |= LOCKLEAF; 722 for (;;) { 723 cnp->cn_nameptr = cnp->cn_pnbuf; 724 /* 725 * Call lookup() to do the real work. If an error occurs, 726 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 727 * we do not have to dereference anything before returning. 728 * In either case ni_startdir will be dereferenced and NULLed 729 * out. 730 */ 731 error = vfs_lookup(ndp); 732 if (error) 733 break; 734 735 /* 736 * Check for encountering a symbolic link. Trivial 737 * termination occurs if no symlink encountered. 738 */ 739 if ((cnp->cn_flags & ISSYMLINK) == 0) { 740 if (ndp->ni_vp && !lockleaf) 741 NFSVOPUNLOCK(ndp->ni_vp); 742 break; 743 } 744 745 /* 746 * Validate symlink 747 */ 748 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 749 NFSVOPUNLOCK(ndp->ni_dvp); 750 if (!(nd->nd_flag & ND_PUBLOOKUP)) { 751 error = EINVAL; 752 goto badlink2; 753 } 754 755 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 756 error = ELOOP; 757 goto badlink2; 758 } 759 if (ndp->ni_pathlen > 1) 760 cp = uma_zalloc(namei_zone, M_WAITOK); 761 else 762 cp = cnp->cn_pnbuf; 763 aiov.iov_base = cp; 764 aiov.iov_len = MAXPATHLEN; 765 auio.uio_iov = &aiov; 766 auio.uio_iovcnt = 1; 767 auio.uio_offset = 0; 768 auio.uio_rw = UIO_READ; 769 auio.uio_segflg = UIO_SYSSPACE; 770 auio.uio_td = NULL; 771 auio.uio_resid = MAXPATHLEN; 772 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 773 if (error) { 774 badlink1: 775 if (ndp->ni_pathlen > 1) 776 uma_zfree(namei_zone, cp); 777 badlink2: 778 vrele(ndp->ni_dvp); 779 vput(ndp->ni_vp); 780 break; 781 } 782 linklen = MAXPATHLEN - auio.uio_resid; 783 if (linklen == 0) { 784 error = ENOENT; 785 goto badlink1; 786 } 787 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 788 error = ENAMETOOLONG; 789 goto badlink1; 790 } 791 792 /* 793 * Adjust or replace path 794 */ 795 if (ndp->ni_pathlen > 1) { 796 NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 797 uma_zfree(namei_zone, cnp->cn_pnbuf); 798 cnp->cn_pnbuf = cp; 799 } else 800 cnp->cn_pnbuf[linklen] = '\0'; 801 ndp->ni_pathlen += linklen; 802 803 /* 804 * Cleanup refs for next loop and check if root directory 805 * should replace current directory. Normally ni_dvp 806 * becomes the new base directory and is cleaned up when 807 * we loop. Explicitly null pointers after invalidation 808 * to clarify operation. 809 */ 810 vput(ndp->ni_vp); 811 ndp->ni_vp = NULL; 812 813 if (cnp->cn_pnbuf[0] == '/') { 814 vrele(ndp->ni_dvp); 815 ndp->ni_dvp = ndp->ni_rootdir; 816 VREF(ndp->ni_dvp); 817 } 818 ndp->ni_startdir = ndp->ni_dvp; 819 ndp->ni_dvp = NULL; 820 } 821 if (!lockleaf) 822 cnp->cn_flags &= ~LOCKLEAF; 823 824 out: 825 if (error) { 826 nfsvno_relpathbuf(ndp); 827 ndp->ni_vp = NULL; 828 ndp->ni_dvp = NULL; 829 ndp->ni_startdir = NULL; 830 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 831 ndp->ni_dvp = NULL; 832 } 833 834 out1: 835 NFSEXITCODE2(error, nd); 836 return (error); 837 } 838 839 /* 840 * Set up a pathname buffer and return a pointer to it and, optionally 841 * set a hash pointer. 842 */ 843 void 844 nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 845 { 846 struct componentname *cnp = &ndp->ni_cnd; 847 848 cnp->cn_flags |= (NOMACCHECK); 849 cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 850 if (hashpp != NULL) 851 *hashpp = NULL; 852 *bufpp = cnp->cn_pnbuf; 853 } 854 855 /* 856 * Release the above path buffer, if not released by nfsvno_namei(). 857 */ 858 void 859 nfsvno_relpathbuf(struct nameidata *ndp) 860 { 861 862 uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 863 ndp->ni_cnd.cn_pnbuf = NULL; 864 } 865 866 /* 867 * Readlink vnode op into an mbuf list. 868 */ 869 int 870 nfsvno_readlink(struct vnode *vp, struct ucred *cred, int maxextsiz, 871 struct thread *p, struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 872 { 873 struct iovec *iv; 874 struct uio io, *uiop = &io; 875 struct mbuf *mp, *mp3; 876 int len, tlen, error = 0; 877 878 len = NFS_MAXPATHLEN; 879 if (maxextsiz > 0) 880 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 881 &mp3, &mp, &iv); 882 else 883 uiop->uio_iovcnt = nfsrv_createiovec(len, &mp3, &mp, &iv); 884 uiop->uio_iov = iv; 885 uiop->uio_offset = 0; 886 uiop->uio_resid = len; 887 uiop->uio_rw = UIO_READ; 888 uiop->uio_segflg = UIO_SYSSPACE; 889 uiop->uio_td = NULL; 890 error = VOP_READLINK(vp, uiop, cred); 891 free(iv, M_TEMP); 892 if (error) { 893 m_freem(mp3); 894 *lenp = 0; 895 goto out; 896 } 897 if (uiop->uio_resid > 0) { 898 len -= uiop->uio_resid; 899 tlen = NFSM_RNDUP(len); 900 if (tlen == 0) { 901 m_freem(mp3); 902 mp3 = mp = NULL; 903 } else if (tlen != NFS_MAXPATHLEN || tlen != len) 904 mp = nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, 905 tlen - len); 906 } 907 *lenp = len; 908 *mpp = mp3; 909 *mpendp = mp; 910 911 out: 912 NFSEXITCODE(error); 913 return (error); 914 } 915 916 /* 917 * Create an mbuf chain and an associated iovec that can be used to Read 918 * or Getextattr of data. 919 * Upon success, return pointers to the first and last mbufs in the chain 920 * plus the malloc'd iovec and its iovlen. 921 */ 922 static int 923 nfsrv_createiovec(int len, struct mbuf **mpp, struct mbuf **mpendp, 924 struct iovec **ivp) 925 { 926 struct mbuf *m, *m2 = NULL, *m3; 927 struct iovec *iv; 928 int i, left, siz; 929 930 left = len; 931 m3 = NULL; 932 /* 933 * Generate the mbuf list with the uio_iov ref. to it. 934 */ 935 i = 0; 936 while (left > 0) { 937 NFSMGET(m); 938 MCLGET(m, M_WAITOK); 939 m->m_len = 0; 940 siz = min(M_TRAILINGSPACE(m), left); 941 left -= siz; 942 i++; 943 if (m3) 944 m2->m_next = m; 945 else 946 m3 = m; 947 m2 = m; 948 } 949 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 950 m = m3; 951 left = len; 952 i = 0; 953 while (left > 0) { 954 if (m == NULL) 955 panic("nfsrv_createiovec iov"); 956 siz = min(M_TRAILINGSPACE(m), left); 957 if (siz > 0) { 958 iv->iov_base = mtod(m, caddr_t) + m->m_len; 959 iv->iov_len = siz; 960 m->m_len += siz; 961 left -= siz; 962 iv++; 963 i++; 964 } 965 m = m->m_next; 966 } 967 *mpp = m3; 968 *mpendp = m2; 969 return (i); 970 } 971 972 /* 973 * Create an mbuf chain and an associated iovec that can be used to Read 974 * or Getextattr of data. 975 * Upon success, return pointers to the first and last mbufs in the chain 976 * plus the malloc'd iovec and its iovlen. 977 * Same as above, but creates ext_pgs mbuf(s). 978 */ 979 static int 980 nfsrv_createiovec_extpgs(int len, int maxextsiz, struct mbuf **mpp, 981 struct mbuf **mpendp, struct iovec **ivp) 982 { 983 struct mbuf *m, *m2 = NULL, *m3; 984 struct iovec *iv; 985 int i, left, pgno, siz; 986 987 left = len; 988 m3 = NULL; 989 /* 990 * Generate the mbuf list with the uio_iov ref. to it. 991 */ 992 i = 0; 993 while (left > 0) { 994 siz = min(left, maxextsiz); 995 m = mb_alloc_ext_plus_pages(siz, M_WAITOK); 996 left -= siz; 997 i += m->m_epg_npgs; 998 if (m3 != NULL) 999 m2->m_next = m; 1000 else 1001 m3 = m; 1002 m2 = m; 1003 } 1004 *ivp = iv = malloc(i * sizeof (struct iovec), M_TEMP, M_WAITOK); 1005 m = m3; 1006 left = len; 1007 i = 0; 1008 pgno = 0; 1009 while (left > 0) { 1010 if (m == NULL) 1011 panic("nfsvno_createiovec_extpgs iov"); 1012 siz = min(PAGE_SIZE, left); 1013 if (siz > 0) { 1014 iv->iov_base = (void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 1015 iv->iov_len = siz; 1016 m->m_len += siz; 1017 if (pgno == m->m_epg_npgs - 1) 1018 m->m_epg_last_len = siz; 1019 left -= siz; 1020 iv++; 1021 i++; 1022 pgno++; 1023 } 1024 if (pgno == m->m_epg_npgs && left > 0) { 1025 m = m->m_next; 1026 if (m == NULL) 1027 panic("nfsvno_createiovec_extpgs iov"); 1028 pgno = 0; 1029 } 1030 } 1031 *mpp = m3; 1032 *mpendp = m2; 1033 return (i); 1034 } 1035 1036 /* 1037 * Read vnode op call into mbuf list. 1038 */ 1039 int 1040 nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 1041 int maxextsiz, struct thread *p, struct mbuf **mpp, 1042 struct mbuf **mpendp) 1043 { 1044 struct mbuf *m; 1045 struct iovec *iv; 1046 int error = 0, len, tlen, ioflag = 0; 1047 struct mbuf *m3; 1048 struct uio io, *uiop = &io; 1049 struct nfsheur *nh; 1050 1051 /* 1052 * Attempt to read from a DS file. A return of ENOENT implies 1053 * there is no DS file to read. 1054 */ 1055 error = nfsrv_proxyds(vp, off, cnt, cred, p, NFSPROC_READDS, mpp, 1056 NULL, mpendp, NULL, NULL, NULL, 0, NULL); 1057 if (error != ENOENT) 1058 return (error); 1059 1060 len = NFSM_RNDUP(cnt); 1061 if (maxextsiz > 0) 1062 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(len, maxextsiz, 1063 &m3, &m, &iv); 1064 else 1065 uiop->uio_iovcnt = nfsrv_createiovec(len, &m3, &m, &iv); 1066 uiop->uio_iov = iv; 1067 uiop->uio_offset = off; 1068 uiop->uio_resid = len; 1069 uiop->uio_rw = UIO_READ; 1070 uiop->uio_segflg = UIO_SYSSPACE; 1071 uiop->uio_td = NULL; 1072 nh = nfsrv_sequential_heuristic(uiop, vp); 1073 ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 1074 /* XXX KDM make this more systematic? */ 1075 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_READ] += uiop->uio_resid; 1076 error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 1077 free(iv, M_TEMP); 1078 if (error) { 1079 m_freem(m3); 1080 *mpp = NULL; 1081 goto out; 1082 } 1083 nh->nh_nextoff = uiop->uio_offset; 1084 tlen = len - uiop->uio_resid; 1085 cnt = cnt < tlen ? cnt : tlen; 1086 tlen = NFSM_RNDUP(cnt); 1087 if (tlen == 0) { 1088 m_freem(m3); 1089 m3 = m = NULL; 1090 } else if (len != tlen || tlen != cnt) 1091 m = nfsrv_adj(m3, len - tlen, tlen - cnt); 1092 *mpp = m3; 1093 *mpendp = m; 1094 1095 out: 1096 NFSEXITCODE(error); 1097 return (error); 1098 } 1099 1100 /* 1101 * Create the iovec for the mbuf chain passed in as an argument. 1102 * The "cp" argument is where the data starts within the first mbuf in 1103 * the chain. It returns the iovec and the iovcnt. 1104 */ 1105 static int 1106 nfsrv_createiovecw(int retlen, struct mbuf *m, char *cp, struct iovec **ivpp, 1107 int *iovcntp) 1108 { 1109 struct mbuf *mp; 1110 struct iovec *ivp; 1111 int cnt, i, len; 1112 1113 /* 1114 * Loop through the mbuf chain, counting how many mbufs are a 1115 * part of this write operation, so the iovec size is known. 1116 */ 1117 cnt = 0; 1118 len = retlen; 1119 mp = m; 1120 i = mtod(mp, caddr_t) + mp->m_len - cp; 1121 while (len > 0) { 1122 if (i > 0) { 1123 len -= i; 1124 cnt++; 1125 } 1126 mp = mp->m_next; 1127 if (!mp) { 1128 if (len > 0) 1129 return (EBADRPC); 1130 } else 1131 i = mp->m_len; 1132 } 1133 1134 /* Now, create the iovec. */ 1135 mp = m; 1136 *ivpp = ivp = malloc(cnt * sizeof (struct iovec), M_TEMP, 1137 M_WAITOK); 1138 *iovcntp = cnt; 1139 i = mtod(mp, caddr_t) + mp->m_len - cp; 1140 len = retlen; 1141 while (len > 0) { 1142 if (mp == NULL) 1143 panic("nfsrv_createiovecw"); 1144 if (i > 0) { 1145 i = min(i, len); 1146 ivp->iov_base = cp; 1147 ivp->iov_len = i; 1148 ivp++; 1149 len -= i; 1150 } 1151 mp = mp->m_next; 1152 if (mp) { 1153 i = mp->m_len; 1154 cp = mtod(mp, caddr_t); 1155 } 1156 } 1157 return (0); 1158 } 1159 1160 /* 1161 * Write vnode op from an mbuf list. 1162 */ 1163 int 1164 nfsvno_write(struct vnode *vp, off_t off, int retlen, int *stable, 1165 struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 1166 { 1167 struct iovec *iv; 1168 int cnt, ioflags, error; 1169 struct uio io, *uiop = &io; 1170 struct nfsheur *nh; 1171 1172 /* 1173 * Attempt to write to a DS file. A return of ENOENT implies 1174 * there is no DS file to write. 1175 */ 1176 error = nfsrv_proxyds(vp, off, retlen, cred, p, NFSPROC_WRITEDS, 1177 &mp, cp, NULL, NULL, NULL, NULL, 0, NULL); 1178 if (error != ENOENT) { 1179 *stable = NFSWRITE_FILESYNC; 1180 return (error); 1181 } 1182 1183 if (*stable == NFSWRITE_UNSTABLE) 1184 ioflags = IO_NODELOCKED; 1185 else 1186 ioflags = (IO_SYNC | IO_NODELOCKED); 1187 error = nfsrv_createiovecw(retlen, mp, cp, &iv, &cnt); 1188 if (error != 0) 1189 return (error); 1190 uiop->uio_iov = iv; 1191 uiop->uio_iovcnt = cnt; 1192 uiop->uio_resid = retlen; 1193 uiop->uio_rw = UIO_WRITE; 1194 uiop->uio_segflg = UIO_SYSSPACE; 1195 NFSUIOPROC(uiop, p); 1196 uiop->uio_offset = off; 1197 nh = nfsrv_sequential_heuristic(uiop, vp); 1198 ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 1199 /* XXX KDM make this more systematic? */ 1200 NFSD_VNET(nfsstatsv1_p)->srvbytes[NFSV4OP_WRITE] += uiop->uio_resid; 1201 error = VOP_WRITE(vp, uiop, ioflags, cred); 1202 if (error == 0) 1203 nh->nh_nextoff = uiop->uio_offset; 1204 free(iv, M_TEMP); 1205 1206 NFSEXITCODE(error); 1207 return (error); 1208 } 1209 1210 /* 1211 * Common code for creating a regular file (plus special files for V2). 1212 */ 1213 int 1214 nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 1215 struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 1216 int32_t *cverf, NFSDEV_T rdev, struct nfsexstuff *exp) 1217 { 1218 u_quad_t tempsize; 1219 int error; 1220 struct thread *p = curthread; 1221 1222 error = nd->nd_repstat; 1223 if (!error && ndp->ni_vp == NULL) { 1224 if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 1225 error = VOP_CREATE(ndp->ni_dvp, 1226 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1227 /* For a pNFS server, create the data file on a DS. */ 1228 if (error == 0 && nvap->na_type == VREG) { 1229 /* 1230 * Create a data file on a DS for a pNFS server. 1231 * This function just returns if not 1232 * running a pNFS DS or the creation fails. 1233 */ 1234 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1235 nd->nd_cred, p); 1236 } 1237 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1238 NULL, false); 1239 nfsvno_relpathbuf(ndp); 1240 if (!error) { 1241 if (*exclusive_flagp) { 1242 *exclusive_flagp = 0; 1243 NFSVNO_ATTRINIT(nvap); 1244 nvap->na_atime.tv_sec = cverf[0]; 1245 nvap->na_atime.tv_nsec = cverf[1]; 1246 error = VOP_SETATTR(ndp->ni_vp, 1247 &nvap->na_vattr, nd->nd_cred); 1248 if (error != 0) { 1249 vput(ndp->ni_vp); 1250 ndp->ni_vp = NULL; 1251 error = NFSERR_NOTSUPP; 1252 } 1253 } 1254 } 1255 /* 1256 * NFS V2 Only. nfsrvd_mknod() does this for V3. 1257 * (This implies, just get out on an error.) 1258 */ 1259 } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 1260 nvap->na_type == VFIFO) { 1261 if (nvap->na_type == VCHR && rdev == 0xffffffff) 1262 nvap->na_type = VFIFO; 1263 if (nvap->na_type != VFIFO && 1264 (error = priv_check_cred(nd->nd_cred, PRIV_VFS_MKNOD_DEV))) { 1265 nfsvno_relpathbuf(ndp); 1266 vput(ndp->ni_dvp); 1267 goto out; 1268 } 1269 nvap->na_rdev = rdev; 1270 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1271 &ndp->ni_cnd, &nvap->na_vattr); 1272 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : 1273 NULL, false); 1274 nfsvno_relpathbuf(ndp); 1275 if (error) 1276 goto out; 1277 } else { 1278 nfsvno_relpathbuf(ndp); 1279 vput(ndp->ni_dvp); 1280 error = ENXIO; 1281 goto out; 1282 } 1283 *vpp = ndp->ni_vp; 1284 } else { 1285 /* 1286 * Handle cases where error is already set and/or 1287 * the file exists. 1288 * 1 - clean up the lookup 1289 * 2 - iff !error and na_size set, truncate it 1290 */ 1291 nfsvno_relpathbuf(ndp); 1292 *vpp = ndp->ni_vp; 1293 if (ndp->ni_dvp == *vpp) 1294 vrele(ndp->ni_dvp); 1295 else 1296 vput(ndp->ni_dvp); 1297 if (!error && nvap->na_size != VNOVAL) { 1298 error = nfsvno_accchk(*vpp, VWRITE, 1299 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1300 NFSACCCHK_VPISLOCKED, NULL); 1301 if (!error) { 1302 tempsize = nvap->na_size; 1303 NFSVNO_ATTRINIT(nvap); 1304 nvap->na_size = tempsize; 1305 error = nfsvno_setattr(*vpp, nvap, 1306 nd->nd_cred, p, exp); 1307 } 1308 } 1309 if (error) 1310 vput(*vpp); 1311 } 1312 1313 out: 1314 NFSEXITCODE(error); 1315 return (error); 1316 } 1317 1318 /* 1319 * Do a mknod vnode op. 1320 */ 1321 int 1322 nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 1323 struct thread *p) 1324 { 1325 int error = 0; 1326 __enum_uint8(vtype) vtyp; 1327 1328 vtyp = nvap->na_type; 1329 /* 1330 * Iff doesn't exist, create it. 1331 */ 1332 if (ndp->ni_vp) { 1333 nfsvno_relpathbuf(ndp); 1334 vput(ndp->ni_dvp); 1335 vrele(ndp->ni_vp); 1336 error = EEXIST; 1337 goto out; 1338 } 1339 if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 1340 nfsvno_relpathbuf(ndp); 1341 vput(ndp->ni_dvp); 1342 error = NFSERR_BADTYPE; 1343 goto out; 1344 } 1345 if (vtyp == VSOCK) { 1346 error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 1347 &ndp->ni_cnd, &nvap->na_vattr); 1348 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1349 false); 1350 nfsvno_relpathbuf(ndp); 1351 } else { 1352 if (nvap->na_type != VFIFO && 1353 (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV))) { 1354 nfsvno_relpathbuf(ndp); 1355 vput(ndp->ni_dvp); 1356 goto out; 1357 } 1358 error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 1359 &ndp->ni_cnd, &nvap->na_vattr); 1360 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, 1361 false); 1362 nfsvno_relpathbuf(ndp); 1363 /* 1364 * Since VOP_MKNOD returns the ni_vp, I can't 1365 * see any reason to do the lookup. 1366 */ 1367 } 1368 1369 out: 1370 NFSEXITCODE(error); 1371 return (error); 1372 } 1373 1374 /* 1375 * Mkdir vnode op. 1376 */ 1377 int 1378 nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 1379 struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 1380 { 1381 int error = 0; 1382 1383 if (ndp->ni_vp != NULL) { 1384 if (ndp->ni_dvp == ndp->ni_vp) 1385 vrele(ndp->ni_dvp); 1386 else 1387 vput(ndp->ni_dvp); 1388 vrele(ndp->ni_vp); 1389 nfsvno_relpathbuf(ndp); 1390 error = EEXIST; 1391 goto out; 1392 } 1393 error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1394 &nvap->na_vattr); 1395 VOP_VPUT_PAIR(ndp->ni_dvp, error == 0 ? &ndp->ni_vp : NULL, false); 1396 nfsvno_relpathbuf(ndp); 1397 1398 out: 1399 NFSEXITCODE(error); 1400 return (error); 1401 } 1402 1403 /* 1404 * symlink vnode op. 1405 */ 1406 int 1407 nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 1408 int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 1409 struct nfsexstuff *exp) 1410 { 1411 int error = 0; 1412 1413 if (ndp->ni_vp) { 1414 nfsvno_relpathbuf(ndp); 1415 if (ndp->ni_dvp == ndp->ni_vp) 1416 vrele(ndp->ni_dvp); 1417 else 1418 vput(ndp->ni_dvp); 1419 vrele(ndp->ni_vp); 1420 error = EEXIST; 1421 goto out; 1422 } 1423 1424 error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 1425 &nvap->na_vattr, pathcp); 1426 /* 1427 * Although FreeBSD still had the lookup code in 1428 * it for 7/current, there doesn't seem to be any 1429 * point, since VOP_SYMLINK() returns the ni_vp. 1430 * Just vput it for v2. 1431 */ 1432 VOP_VPUT_PAIR(ndp->ni_dvp, &ndp->ni_vp, !not_v2 && error == 0); 1433 nfsvno_relpathbuf(ndp); 1434 1435 out: 1436 NFSEXITCODE(error); 1437 return (error); 1438 } 1439 1440 /* 1441 * Parse symbolic link arguments. 1442 * This function has an ugly side effect. It will malloc() an area for 1443 * the symlink and set iov_base to point to it, only if it succeeds. 1444 * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 1445 * be FREE'd later. 1446 */ 1447 int 1448 nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 1449 struct thread *p, char **pathcpp, int *lenp) 1450 { 1451 u_int32_t *tl; 1452 char *pathcp = NULL; 1453 int error = 0, len; 1454 struct nfsv2_sattr *sp; 1455 1456 *pathcpp = NULL; 1457 *lenp = 0; 1458 if ((nd->nd_flag & ND_NFSV3) && 1459 (error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p))) 1460 goto nfsmout; 1461 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1462 len = fxdr_unsigned(int, *tl); 1463 if (len > NFS_MAXPATHLEN || len <= 0) { 1464 error = EBADRPC; 1465 goto nfsmout; 1466 } 1467 pathcp = malloc(len + 1, M_TEMP, M_WAITOK); 1468 error = nfsrv_mtostr(nd, pathcp, len); 1469 if (error) 1470 goto nfsmout; 1471 if (nd->nd_flag & ND_NFSV2) { 1472 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1473 nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1474 } 1475 *pathcpp = pathcp; 1476 *lenp = len; 1477 NFSEXITCODE2(0, nd); 1478 return (0); 1479 nfsmout: 1480 if (pathcp) 1481 free(pathcp, M_TEMP); 1482 NFSEXITCODE2(error, nd); 1483 return (error); 1484 } 1485 1486 /* 1487 * Remove a non-directory object. 1488 */ 1489 int 1490 nfsvno_removesub(struct nameidata *ndp, bool is_v4, struct nfsrv_descript *nd, 1491 struct thread *p, struct nfsexstuff *exp) 1492 { 1493 struct vnode *vp, *dsdvp[NFSDEV_MAXMIRRORS], *newvp; 1494 struct mount *mp; 1495 int error = 0, mirrorcnt, ret; 1496 char fname[PNFS_FILENAME_LEN + 1]; 1497 fhandle_t fh; 1498 1499 vp = ndp->ni_vp; 1500 dsdvp[0] = NULL; 1501 if (vp->v_type == VDIR) { 1502 error = NFSERR_ISDIR; 1503 } else if (is_v4) { 1504 if (nfsrv_recalldeleg || (nd->nd_flag & ND_NFSV41) == 0) 1505 error = nfsrv_checkremove(vp, 1, NULL, 1506 (nfsquad_t)((u_quad_t)0), p); 1507 else 1508 error = nfsrv_checkremove(vp, 1, NULL, nd->nd_clientid, 1509 p); 1510 } 1511 if (error == 0) 1512 nfsrv_pnfsremovesetup(vp, p, dsdvp, &mirrorcnt, fname, &fh); 1513 if (!error) 1514 error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1515 if (error == 0 && dsdvp[0] != NULL) 1516 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1517 if (is_v4 && (nd->nd_flag & ND_NFSV41) != 0 && error == 0) 1518 error = nfsvno_getfh(vp, &fh, p); 1519 if (ndp->ni_dvp == vp) 1520 vrele(ndp->ni_dvp); 1521 else 1522 vput(ndp->ni_dvp); 1523 vput(vp); 1524 1525 /* Use ret to determine if the file still exists. */ 1526 if (is_v4 && (nd->nd_flag & ND_NFSV41) != 0 && error == 0) { 1527 mp = vfs_busyfs(&fh.fh_fsid); 1528 if (mp != NULL) { 1529 /* Find out if the file still exists. */ 1530 ret = VFS_FHTOVP(mp, &fh.fh_fid, LK_SHARED, &newvp); 1531 if (ret == 0) 1532 vput(newvp); 1533 else 1534 ret = ESTALE; 1535 vfs_unbusy(mp); 1536 } else { 1537 ret = ESTALE; 1538 } 1539 if (ret == ESTALE) { 1540 /* Get rid of any delegation. */ 1541 nfsrv_removedeleg(&fh, nd, p); 1542 } 1543 } 1544 1545 nfsvno_relpathbuf(ndp); 1546 NFSEXITCODE(error); 1547 return (error); 1548 } 1549 1550 /* 1551 * Remove a directory. 1552 */ 1553 int 1554 nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1555 struct thread *p, struct nfsexstuff *exp) 1556 { 1557 struct vnode *vp; 1558 int error = 0; 1559 1560 vp = ndp->ni_vp; 1561 if (vp->v_type != VDIR) { 1562 error = ENOTDIR; 1563 goto out; 1564 } 1565 /* 1566 * No rmdir "." please. 1567 */ 1568 if (ndp->ni_dvp == vp) { 1569 error = EINVAL; 1570 goto out; 1571 } 1572 /* 1573 * The root of a mounted filesystem cannot be deleted. 1574 */ 1575 if (vp->v_vflag & VV_ROOT) 1576 error = EBUSY; 1577 out: 1578 if (!error) 1579 error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1580 if (ndp->ni_dvp == vp) 1581 vrele(ndp->ni_dvp); 1582 else 1583 vput(ndp->ni_dvp); 1584 vput(vp); 1585 nfsvno_relpathbuf(ndp); 1586 NFSEXITCODE(error); 1587 return (error); 1588 } 1589 1590 /* 1591 * Rename vnode op. 1592 */ 1593 int 1594 nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1595 struct nfsrv_descript *nd, struct thread *p) 1596 { 1597 struct vnode *fvp, *tvp, *tdvp, *dsdvp[NFSDEV_MAXMIRRORS], *newvp; 1598 struct mount *mp; 1599 int error = 0, mirrorcnt, ret; 1600 char fname[PNFS_FILENAME_LEN + 1]; 1601 fhandle_t fh, fh2; 1602 1603 dsdvp[0] = NULL; 1604 fvp = fromndp->ni_vp; 1605 if (nd->nd_repstat != 0) { 1606 vrele(fromndp->ni_dvp); 1607 vrele(fvp); 1608 error = nd->nd_repstat; 1609 goto out1; 1610 } 1611 tdvp = tondp->ni_dvp; 1612 tvp = tondp->ni_vp; 1613 if (tvp != NULL) { 1614 if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1615 error = (nd->nd_flag & ND_NFSV2) ? EISDIR : EEXIST; 1616 goto out; 1617 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1618 error = (nd->nd_flag & ND_NFSV2) ? ENOTDIR : EEXIST; 1619 goto out; 1620 } 1621 if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1622 error = (nd->nd_flag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1623 goto out; 1624 } 1625 1626 /* 1627 * A rename to '.' or '..' results in a prematurely 1628 * unlocked vnode on FreeBSD5, so I'm just going to fail that 1629 * here. 1630 */ 1631 if ((tondp->ni_cnd.cn_namelen == 1 && 1632 tondp->ni_cnd.cn_nameptr[0] == '.') || 1633 (tondp->ni_cnd.cn_namelen == 2 && 1634 tondp->ni_cnd.cn_nameptr[0] == '.' && 1635 tondp->ni_cnd.cn_nameptr[1] == '.')) { 1636 error = EINVAL; 1637 goto out; 1638 } 1639 } 1640 if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1641 error = (nd->nd_flag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1642 goto out; 1643 } 1644 if (fvp->v_mount != tdvp->v_mount) { 1645 error = (nd->nd_flag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1646 goto out; 1647 } 1648 if (fvp == tdvp) { 1649 error = (nd->nd_flag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1650 goto out; 1651 } 1652 if (fvp == tvp) { 1653 /* 1654 * If source and destination are the same, there is nothing to 1655 * do. Set error to -1 to indicate this. 1656 */ 1657 error = -1; 1658 goto out; 1659 } 1660 if (nd->nd_flag & ND_NFSV4) { 1661 if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1662 if (nfsrv_recalldeleg || (nd->nd_flag & ND_NFSV41) == 0) 1663 error = nfsrv_checkremove(fvp, 0, NULL, 1664 (nfsquad_t)((u_quad_t)0), p); 1665 else 1666 error = nfsrv_checkremove(fvp, 0, NULL, 1667 nd->nd_clientid, p); 1668 NFSVOPUNLOCK(fvp); 1669 } else 1670 error = EPERM; 1671 if (tvp && !error) { 1672 if (nfsrv_recalldeleg || (nd->nd_flag & ND_NFSV41) == 0) 1673 error = nfsrv_checkremove(tvp, 1, NULL, 1674 (nfsquad_t)((u_quad_t)0), p); 1675 else 1676 error = nfsrv_checkremove(tvp, 1, NULL, 1677 nd->nd_clientid, p); 1678 } 1679 } else { 1680 /* 1681 * For NFSv2 and NFSv3, try to get rid of the delegation, so 1682 * that the NFSv4 client won't be confused by the rename. 1683 * Since nfsd_recalldelegation() can only be called on an 1684 * unlocked vnode at this point and fvp is the file that will 1685 * still exist after the rename, just do fvp. 1686 */ 1687 nfsd_recalldelegation(fvp, p); 1688 } 1689 if (error == 0 && tvp != NULL) { 1690 if ((nd->nd_flag & ND_NFSV41) != 0) 1691 error = nfsvno_getfh(tvp, &fh2, p); 1692 if (error == 0) 1693 nfsrv_pnfsremovesetup(tvp, p, dsdvp, &mirrorcnt, fname, 1694 &fh); 1695 NFSD_DEBUG(4, "nfsvno_rename: pnfsremovesetup" 1696 " dsdvp=%p\n", dsdvp[0]); 1697 } 1698 out: 1699 if (!error) { 1700 error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1701 &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1702 &tondp->ni_cnd); 1703 } else { 1704 if (tdvp == tvp) 1705 vrele(tdvp); 1706 else 1707 vput(tdvp); 1708 if (tvp) 1709 vput(tvp); 1710 vrele(fromndp->ni_dvp); 1711 vrele(fvp); 1712 if (error == -1) 1713 error = 0; 1714 } 1715 1716 /* 1717 * If dsdvp[0] != NULL, it was set up by nfsrv_pnfsremovesetup() and 1718 * if the rename succeeded, the DS file for the tvp needs to be 1719 * removed. 1720 */ 1721 if (error == 0 && dsdvp[0] != NULL) { 1722 nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p); 1723 NFSD_DEBUG(4, "nfsvno_rename: pnfsremove\n"); 1724 } 1725 1726 /* Use ret to determine if the file still exists. */ 1727 if ((nd->nd_flag & ND_NFSV41) != 0 && error == 0) { 1728 mp = vfs_busyfs(&fh2.fh_fsid); 1729 if (mp != NULL) { 1730 /* Find out if the file still exists. */ 1731 ret = VFS_FHTOVP(mp, &fh2.fh_fid, LK_SHARED, &newvp); 1732 if (ret == 0) 1733 vput(newvp); 1734 else 1735 ret = ESTALE; 1736 vfs_unbusy(mp); 1737 } else { 1738 ret = ESTALE; 1739 } 1740 if (ret == ESTALE) { 1741 /* Get rid of any delegation. */ 1742 nfsrv_removedeleg(&fh2, nd, p); 1743 } 1744 } 1745 1746 nfsvno_relpathbuf(tondp); 1747 out1: 1748 nfsvno_relpathbuf(fromndp); 1749 NFSEXITCODE(error); 1750 return (error); 1751 } 1752 1753 /* 1754 * Link vnode op. 1755 */ 1756 int 1757 nfsvno_link(struct nameidata *ndp, struct vnode *vp, nfsquad_t clientid, 1758 struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 1759 { 1760 struct vnode *xp; 1761 int error = 0; 1762 1763 xp = ndp->ni_vp; 1764 if (xp != NULL) { 1765 error = EEXIST; 1766 } else { 1767 xp = ndp->ni_dvp; 1768 if (vp->v_mount != xp->v_mount) 1769 error = EXDEV; 1770 } 1771 if (!error) { 1772 NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1773 if (!VN_IS_DOOMED(vp)) { 1774 error = nfsrv_checkremove(vp, 0, NULL, clientid, p); 1775 if (error == 0) 1776 error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1777 } else 1778 error = EPERM; 1779 if (ndp->ni_dvp == vp) { 1780 vrele(ndp->ni_dvp); 1781 NFSVOPUNLOCK(vp); 1782 } else { 1783 vref(vp); 1784 VOP_VPUT_PAIR(ndp->ni_dvp, &vp, true); 1785 } 1786 } else { 1787 if (ndp->ni_dvp == ndp->ni_vp) 1788 vrele(ndp->ni_dvp); 1789 else 1790 vput(ndp->ni_dvp); 1791 if (ndp->ni_vp) 1792 vrele(ndp->ni_vp); 1793 } 1794 nfsvno_relpathbuf(ndp); 1795 NFSEXITCODE(error); 1796 return (error); 1797 } 1798 1799 /* 1800 * Do the fsync() appropriate for the commit. 1801 */ 1802 int 1803 nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1804 struct thread *td) 1805 { 1806 int error = 0; 1807 1808 /* 1809 * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1810 * file is done. At this time VOP_FSYNC does not accept offset and 1811 * byte count parameters so call VOP_FSYNC the whole file for now. 1812 * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1813 * File systems that do not use the buffer cache (as indicated 1814 * by MNTK_USES_BCACHE not being set) must use VOP_FSYNC(). 1815 */ 1816 if (cnt == 0 || cnt > MAX_COMMIT_COUNT || 1817 (vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) { 1818 /* 1819 * Give up and do the whole thing 1820 */ 1821 vnode_pager_clean_sync(vp); 1822 error = VOP_FSYNC(vp, MNT_WAIT, td); 1823 } else { 1824 /* 1825 * Locate and synchronously write any buffers that fall 1826 * into the requested range. Note: we are assuming that 1827 * f_iosize is a power of 2. 1828 */ 1829 int iosize = vp->v_mount->mnt_stat.f_iosize; 1830 int iomask = iosize - 1; 1831 struct bufobj *bo; 1832 daddr_t lblkno; 1833 1834 /* 1835 * Align to iosize boundary, super-align to page boundary. 1836 */ 1837 if (off & iomask) { 1838 cnt += off & iomask; 1839 off &= ~(u_quad_t)iomask; 1840 } 1841 if (off & PAGE_MASK) { 1842 cnt += off & PAGE_MASK; 1843 off &= ~(u_quad_t)PAGE_MASK; 1844 } 1845 lblkno = off / iosize; 1846 1847 if (vp->v_object && vm_object_mightbedirty(vp->v_object)) { 1848 VM_OBJECT_WLOCK(vp->v_object); 1849 vm_object_page_clean(vp->v_object, off, off + cnt, 1850 OBJPC_SYNC); 1851 VM_OBJECT_WUNLOCK(vp->v_object); 1852 } 1853 1854 bo = &vp->v_bufobj; 1855 BO_LOCK(bo); 1856 while (cnt > 0) { 1857 struct buf *bp; 1858 1859 /* 1860 * If we have a buffer and it is marked B_DELWRI we 1861 * have to lock and write it. Otherwise the prior 1862 * write is assumed to have already been committed. 1863 * 1864 * gbincore() can return invalid buffers now so we 1865 * have to check that bit as well (though B_DELWRI 1866 * should not be set if B_INVAL is set there could be 1867 * a race here since we haven't locked the buffer). 1868 */ 1869 if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1870 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1871 LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { 1872 BO_LOCK(bo); 1873 continue; /* retry */ 1874 } 1875 if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1876 B_DELWRI) { 1877 bremfree(bp); 1878 bp->b_flags &= ~B_ASYNC; 1879 bwrite(bp); 1880 ++nfs_commit_miss; 1881 } else 1882 BUF_UNLOCK(bp); 1883 BO_LOCK(bo); 1884 } 1885 ++nfs_commit_blks; 1886 if (cnt < iosize) 1887 break; 1888 cnt -= iosize; 1889 ++lblkno; 1890 } 1891 BO_UNLOCK(bo); 1892 } 1893 NFSEXITCODE(error); 1894 return (error); 1895 } 1896 1897 /* 1898 * Statfs vnode op. 1899 */ 1900 int 1901 nfsvno_statfs(struct vnode *vp, struct statfs *sf) 1902 { 1903 struct statfs *tsf; 1904 int error; 1905 1906 tsf = NULL; 1907 if (nfsrv_devidcnt > 0) { 1908 /* For a pNFS service, get the DS numbers. */ 1909 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK | M_ZERO); 1910 error = nfsrv_pnfsstatfs(tsf, vp->v_mount); 1911 if (error != 0) { 1912 free(tsf, M_TEMP); 1913 tsf = NULL; 1914 } 1915 } 1916 error = VFS_STATFS(vp->v_mount, sf); 1917 if (error == 0) { 1918 if (tsf != NULL) { 1919 sf->f_blocks = tsf->f_blocks; 1920 sf->f_bavail = tsf->f_bavail; 1921 sf->f_bfree = tsf->f_bfree; 1922 sf->f_bsize = tsf->f_bsize; 1923 } 1924 /* 1925 * Since NFS handles these values as unsigned on the 1926 * wire, there is no way to represent negative values, 1927 * so set them to 0. Without this, they will appear 1928 * to be very large positive values for clients like 1929 * Solaris10. 1930 */ 1931 if (sf->f_bavail < 0) 1932 sf->f_bavail = 0; 1933 if (sf->f_ffree < 0) 1934 sf->f_ffree = 0; 1935 } 1936 free(tsf, M_TEMP); 1937 NFSEXITCODE(error); 1938 return (error); 1939 } 1940 1941 /* 1942 * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1943 * must handle nfsrv_opencheck() calls after any other access checks. 1944 */ 1945 void 1946 nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1947 nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1948 int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1949 NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, bool done_namei, 1950 struct nfsexstuff *exp, struct vnode **vpp) 1951 { 1952 struct vnode *vp = NULL; 1953 u_quad_t tempsize; 1954 struct nfsexstuff nes; 1955 struct thread *p = curthread; 1956 uint32_t oldrepstat; 1957 1958 if (ndp->ni_vp == NULL) { 1959 /* 1960 * If nfsrv_opencheck() sets nd_repstat, done_namei needs to be 1961 * set true, since cleanup after nfsvno_namei() is needed. 1962 */ 1963 oldrepstat = nd->nd_repstat; 1964 nd->nd_repstat = nfsrv_opencheck(clientid, 1965 stateidp, stp, NULL, nd, p, nd->nd_repstat); 1966 if (nd->nd_repstat != 0 && oldrepstat == 0) 1967 done_namei = true; 1968 } 1969 if (!nd->nd_repstat) { 1970 if (ndp->ni_vp == NULL) { 1971 nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1972 &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1973 /* For a pNFS server, create the data file on a DS. */ 1974 if (nd->nd_repstat == 0) { 1975 /* 1976 * Create a data file on a DS for a pNFS server. 1977 * This function just returns if not 1978 * running a pNFS DS or the creation fails. 1979 */ 1980 nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr, 1981 cred, p); 1982 } 1983 VOP_VPUT_PAIR(ndp->ni_dvp, nd->nd_repstat == 0 ? 1984 &ndp->ni_vp : NULL, false); 1985 nfsvno_relpathbuf(ndp); 1986 if (!nd->nd_repstat) { 1987 if (*exclusive_flagp) { 1988 *exclusive_flagp = 0; 1989 NFSVNO_ATTRINIT(nvap); 1990 nvap->na_atime.tv_sec = cverf[0]; 1991 nvap->na_atime.tv_nsec = cverf[1]; 1992 nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1993 &nvap->na_vattr, cred); 1994 if (nd->nd_repstat != 0) { 1995 vput(ndp->ni_vp); 1996 ndp->ni_vp = NULL; 1997 nd->nd_repstat = NFSERR_NOTSUPP; 1998 } else 1999 NFSSETBIT_ATTRBIT(attrbitp, 2000 NFSATTRBIT_TIMEACCESS); 2001 } else { 2002 nfsrv_fixattr(nd, ndp->ni_vp, nvap, 2003 aclp, p, attrbitp, exp); 2004 } 2005 } 2006 vp = ndp->ni_vp; 2007 } else { 2008 nfsvno_relpathbuf(ndp); 2009 vp = ndp->ni_vp; 2010 if (create == NFSV4OPEN_CREATE) { 2011 if (ndp->ni_dvp == vp) 2012 vrele(ndp->ni_dvp); 2013 else 2014 vput(ndp->ni_dvp); 2015 } 2016 if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 2017 if (ndp->ni_cnd.cn_flags & RDONLY) 2018 NFSVNO_SETEXRDONLY(&nes); 2019 else 2020 NFSVNO_EXINIT(&nes); 2021 nd->nd_repstat = nfsvno_accchk(vp, 2022 VWRITE, cred, &nes, p, 2023 NFSACCCHK_NOOVERRIDE, 2024 NFSACCCHK_VPISLOCKED, NULL); 2025 nd->nd_repstat = nfsrv_opencheck(clientid, 2026 stateidp, stp, vp, nd, p, nd->nd_repstat); 2027 if (!nd->nd_repstat) { 2028 tempsize = nvap->na_size; 2029 NFSVNO_ATTRINIT(nvap); 2030 nvap->na_size = tempsize; 2031 nd->nd_repstat = nfsvno_setattr(vp, 2032 nvap, cred, p, exp); 2033 } 2034 } else if (vp->v_type == VREG) { 2035 nd->nd_repstat = nfsrv_opencheck(clientid, 2036 stateidp, stp, vp, nd, p, nd->nd_repstat); 2037 } 2038 } 2039 } else if (done_namei) { 2040 KASSERT(create == NFSV4OPEN_CREATE, 2041 ("nfsvno_open: not create")); 2042 /* 2043 * done_namei is set when nfsvno_namei() has completed 2044 * successfully, but a subsequent error was set in 2045 * nd_repstat. As such, cleanup of the nfsvno_namei() 2046 * results is required. 2047 */ 2048 nfsvno_relpathbuf(ndp); 2049 if (ndp->ni_dvp == ndp->ni_vp) 2050 vrele(ndp->ni_dvp); 2051 else 2052 vput(ndp->ni_dvp); 2053 if (ndp->ni_vp) 2054 vput(ndp->ni_vp); 2055 } 2056 *vpp = vp; 2057 2058 NFSEXITCODE2(0, nd); 2059 } 2060 2061 /* 2062 * Updates the file rev and sets the mtime and ctime 2063 * to the current clock time, returning the va_filerev and va_Xtime 2064 * values. 2065 * Return ESTALE to indicate the vnode is VIRF_DOOMED. 2066 */ 2067 int 2068 nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 2069 struct nfsrv_descript *nd, struct thread *p) 2070 { 2071 struct vattr va; 2072 2073 VATTR_NULL(&va); 2074 vfs_timestamp(&va.va_mtime); 2075 if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 2076 NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); 2077 if (VN_IS_DOOMED(vp)) 2078 return (ESTALE); 2079 } 2080 (void) VOP_SETATTR(vp, &va, nd->nd_cred); 2081 (void) nfsvno_getattr(vp, nvap, nd, p, 1, NULL); 2082 return (0); 2083 } 2084 2085 /* 2086 * Glue routine to nfsv4_fillattr(). 2087 */ 2088 int 2089 nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 2090 struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 2091 struct ucred *cred, struct thread *p, int isdgram, int reterr, 2092 int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 2093 { 2094 struct statfs *sf; 2095 int error; 2096 2097 sf = NULL; 2098 if (nfsrv_devidcnt > 0 && 2099 (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEAVAIL) || 2100 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEFREE) || 2101 NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACETOTAL))) { 2102 sf = malloc(sizeof(*sf), M_TEMP, M_WAITOK | M_ZERO); 2103 error = nfsrv_pnfsstatfs(sf, mp); 2104 if (error != 0) { 2105 free(sf, M_TEMP); 2106 sf = NULL; 2107 } 2108 } 2109 error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 2110 attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 2111 mounted_on_fileno, sf); 2112 free(sf, M_TEMP); 2113 NFSEXITCODE2(0, nd); 2114 return (error); 2115 } 2116 2117 /* 2118 * Convert a dirent d_type to a vnode type. 2119 */ 2120 static void nfs_dtypetovtype(struct nfsvattr *nvap, struct vnode *vp, 2121 uint8_t dtype) 2122 { 2123 2124 if ((vn_irflag_read(vp) & VIRF_NAMEDDIR) != 0) { 2125 nvap->na_type = VREG; 2126 nvap->na_bsdflags |= SFBSD_NAMEDATTR; 2127 } else if (dtype <= DT_WHT) { 2128 nvap->na_type = dtype_to_vnode[dtype]; 2129 } else { 2130 nvap->na_type = VNON; 2131 } 2132 } 2133 2134 /* Since the Readdir vnode ops vary, put the entire functions in here. */ 2135 /* 2136 * nfs readdir service 2137 * - mallocs what it thinks is enough to read 2138 * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 2139 * - calls VOP_READDIR() 2140 * - loops around building the reply 2141 * if the output generated exceeds count break out of loop 2142 * The NFSM_CLGET macro is used here so that the reply will be packed 2143 * tightly in mbuf clusters. 2144 * - it trims out records with d_fileno == 0 2145 * this doesn't matter for Unix clients, but they might confuse clients 2146 * for other os'. 2147 * - it trims out records with d_type == DT_WHT 2148 * these cannot be seen through NFS (unless we extend the protocol) 2149 * The alternate call nfsrvd_readdirplus() does lookups as well. 2150 * PS: The NFS protocol spec. does not clarify what the "count" byte 2151 * argument is a count of.. just name strings and file id's or the 2152 * entire reply rpc or ... 2153 * I tried just file name and id sizes and it confused the Sun client, 2154 * so I am using the full rpc size now. The "paranoia.." comment refers 2155 * to including the status longwords that are not a part of the dir. 2156 * "entry" structures, but are in the rpc. 2157 */ 2158 int 2159 nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 2160 struct vnode *vp, struct nfsexstuff *exp) 2161 { 2162 struct dirent *dp; 2163 u_int32_t *tl; 2164 int dirlen; 2165 char *cpos, *cend, *rbuf; 2166 struct nfsvattr at; 2167 int nlen, error = 0, getret = 1; 2168 int siz, cnt, fullsiz, eofflag, ncookies; 2169 u_int64_t off, toff, verf __unused; 2170 uint64_t *cookies = NULL, *cookiep; 2171 struct uio io; 2172 struct iovec iv; 2173 int is_ufs; 2174 struct thread *p = curthread; 2175 2176 if (nd->nd_repstat) { 2177 nfsrv_postopattr(nd, getret, &at); 2178 goto out; 2179 } 2180 if (nd->nd_flag & ND_NFSV2) { 2181 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2182 off = fxdr_unsigned(u_quad_t, *tl++); 2183 } else { 2184 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2185 off = fxdr_hyper(tl); 2186 tl += 2; 2187 verf = fxdr_hyper(tl); 2188 tl += 2; 2189 } 2190 toff = off; 2191 cnt = fxdr_unsigned(int, *tl); 2192 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2193 cnt = NFS_SRVMAXDATA(nd); 2194 siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2195 fullsiz = siz; 2196 if (nd->nd_flag & ND_NFSV3) { 2197 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, 2198 NULL); 2199 #if 0 2200 /* 2201 * va_filerev is not sufficient as a cookie verifier, 2202 * since it is not supposed to change when entries are 2203 * removed/added unless that offset cookies returned to 2204 * the client are no longer valid. 2205 */ 2206 if (!nd->nd_repstat && toff && verf != at.na_filerev) 2207 nd->nd_repstat = NFSERR_BAD_COOKIE; 2208 #endif 2209 } 2210 if (!nd->nd_repstat && vp->v_type != VDIR) 2211 nd->nd_repstat = NFSERR_NOTDIR; 2212 if (nd->nd_repstat == 0 && cnt == 0) { 2213 if (nd->nd_flag & ND_NFSV2) 2214 /* NFSv2 does not have NFSERR_TOOSMALL */ 2215 nd->nd_repstat = EPERM; 2216 else 2217 nd->nd_repstat = NFSERR_TOOSMALL; 2218 } 2219 if (!nd->nd_repstat) 2220 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2221 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2222 NFSACCCHK_VPISLOCKED, NULL); 2223 if (nd->nd_repstat) { 2224 vput(vp); 2225 if (nd->nd_flag & ND_NFSV3) 2226 nfsrv_postopattr(nd, getret, &at); 2227 goto out; 2228 } 2229 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2230 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2231 again: 2232 eofflag = 0; 2233 if (cookies) { 2234 free(cookies, M_TEMP); 2235 cookies = NULL; 2236 } 2237 2238 iv.iov_base = rbuf; 2239 iv.iov_len = siz; 2240 io.uio_iov = &iv; 2241 io.uio_iovcnt = 1; 2242 io.uio_offset = (off_t)off; 2243 io.uio_resid = siz; 2244 io.uio_segflg = UIO_SYSSPACE; 2245 io.uio_rw = UIO_READ; 2246 io.uio_td = NULL; 2247 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2248 &cookies); 2249 off = (u_int64_t)io.uio_offset; 2250 if (io.uio_resid) 2251 siz -= io.uio_resid; 2252 2253 if (!cookies && !nd->nd_repstat) 2254 nd->nd_repstat = NFSERR_PERM; 2255 if (nd->nd_flag & ND_NFSV3) { 2256 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2257 if (!nd->nd_repstat) 2258 nd->nd_repstat = getret; 2259 } 2260 2261 /* 2262 * Handles the failed cases. nd->nd_repstat == 0 past here. 2263 */ 2264 if (nd->nd_repstat) { 2265 vput(vp); 2266 free(rbuf, M_TEMP); 2267 if (cookies) 2268 free(cookies, M_TEMP); 2269 if (nd->nd_flag & ND_NFSV3) 2270 nfsrv_postopattr(nd, getret, &at); 2271 goto out; 2272 } 2273 /* 2274 * If nothing read, return eof 2275 * rpc reply 2276 */ 2277 if (siz == 0) { 2278 vput(vp); 2279 if (nd->nd_flag & ND_NFSV2) { 2280 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2281 } else { 2282 nfsrv_postopattr(nd, getret, &at); 2283 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2284 txdr_hyper(at.na_filerev, tl); 2285 tl += 2; 2286 } 2287 *tl++ = newnfs_false; 2288 *tl = newnfs_true; 2289 free(rbuf, M_TEMP); 2290 free(cookies, M_TEMP); 2291 goto out; 2292 } 2293 2294 /* 2295 * Check for degenerate cases of nothing useful read. 2296 * If so go try again 2297 */ 2298 cpos = rbuf; 2299 cend = rbuf + siz; 2300 dp = (struct dirent *)cpos; 2301 cookiep = cookies; 2302 2303 /* 2304 * For some reason FreeBSD's ufs_readdir() chooses to back the 2305 * directory offset up to a block boundary, so it is necessary to 2306 * skip over the records that precede the requested offset. This 2307 * requires the assumption that file offset cookies monotonically 2308 * increase. 2309 */ 2310 while (cpos < cend && ncookies > 0 && 2311 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2312 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) { 2313 cpos += dp->d_reclen; 2314 dp = (struct dirent *)cpos; 2315 cookiep++; 2316 ncookies--; 2317 } 2318 if (cpos >= cend || ncookies == 0) { 2319 siz = fullsiz; 2320 toff = off; 2321 goto again; 2322 } 2323 vput(vp); 2324 2325 /* 2326 * If cnt > MCLBYTES and the reply will not be saved, use 2327 * ext_pgs mbufs for TLS. 2328 * For NFSv4.0, we do not know for sure if the reply will 2329 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2330 */ 2331 if (cnt > MCLBYTES && siz > MCLBYTES && 2332 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2333 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2334 nd->nd_flag |= ND_EXTPG; 2335 2336 /* 2337 * dirlen is the size of the reply, including all XDR and must 2338 * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 2339 * if the XDR should be included in "count", but to be safe, we do. 2340 * (Include the two booleans at the end of the reply in dirlen now.) 2341 */ 2342 if (nd->nd_flag & ND_NFSV3) { 2343 nfsrv_postopattr(nd, getret, &at); 2344 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2345 txdr_hyper(at.na_filerev, tl); 2346 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2347 } else { 2348 dirlen = 2 * NFSX_UNSIGNED; 2349 } 2350 2351 /* Loop through the records and build reply */ 2352 while (cpos < cend && ncookies > 0) { 2353 nlen = dp->d_namlen; 2354 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2355 nlen <= NFS_MAXNAMLEN) { 2356 if (nd->nd_flag & ND_NFSV3) 2357 dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2358 else 2359 dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 2360 if (dirlen > cnt) { 2361 eofflag = 0; 2362 break; 2363 } 2364 2365 /* 2366 * Build the directory record xdr from 2367 * the dirent entry. 2368 */ 2369 if (nd->nd_flag & ND_NFSV3) { 2370 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2371 *tl++ = newnfs_true; 2372 txdr_hyper(dp->d_fileno, tl); 2373 } else { 2374 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2375 *tl++ = newnfs_true; 2376 *tl = txdr_unsigned(dp->d_fileno); 2377 } 2378 (void) nfsm_strtom(nd, dp->d_name, nlen); 2379 if (nd->nd_flag & ND_NFSV3) { 2380 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2381 txdr_hyper(*cookiep, tl); 2382 } else { 2383 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2384 *tl = txdr_unsigned(*cookiep); 2385 } 2386 } 2387 cpos += dp->d_reclen; 2388 dp = (struct dirent *)cpos; 2389 cookiep++; 2390 ncookies--; 2391 } 2392 if (cpos < cend) 2393 eofflag = 0; 2394 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2395 *tl++ = newnfs_false; 2396 if (eofflag) 2397 *tl = newnfs_true; 2398 else 2399 *tl = newnfs_false; 2400 free(rbuf, M_TEMP); 2401 free(cookies, M_TEMP); 2402 2403 out: 2404 NFSEXITCODE2(0, nd); 2405 return (0); 2406 nfsmout: 2407 vput(vp); 2408 NFSEXITCODE2(error, nd); 2409 return (error); 2410 } 2411 2412 /* 2413 * Readdirplus for V3 and Readdir for V4. 2414 */ 2415 int 2416 nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 2417 struct vnode *vp, struct nfsexstuff *exp) 2418 { 2419 struct dirent *dp; 2420 u_int32_t *tl; 2421 int dirlen; 2422 char *cpos, *cend, *rbuf; 2423 struct vnode *nvp; 2424 fhandle_t nfh; 2425 struct nfsvattr nva, at, *nvap = &nva; 2426 struct mbuf *mb0, *mb1; 2427 struct nfsreferral *refp; 2428 int nlen, r, error = 0, getret = 1, usevget = 1; 2429 int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 2430 caddr_t bpos0, bpos1; 2431 u_int64_t off, toff, verf __unused; 2432 uint64_t *cookies = NULL, *cookiep; 2433 nfsattrbit_t attrbits, rderrbits, savbits, refbits; 2434 struct uio io; 2435 struct iovec iv; 2436 struct componentname cn; 2437 int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls; 2438 struct mount *mp, *new_mp; 2439 uint64_t mounted_on_fileno; 2440 struct thread *p = curthread; 2441 int bextpg0, bextpg1, bextpgsiz0, bextpgsiz1; 2442 2443 if (nd->nd_repstat) { 2444 nfsrv_postopattr(nd, getret, &at); 2445 goto out; 2446 } 2447 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 2448 off = fxdr_hyper(tl); 2449 toff = off; 2450 tl += 2; 2451 verf = fxdr_hyper(tl); 2452 tl += 2; 2453 siz = fxdr_unsigned(int, *tl++); 2454 cnt = fxdr_unsigned(int, *tl); 2455 2456 /* 2457 * Use the server's maximum data transfer size as the upper bound 2458 * on reply datalen. 2459 */ 2460 if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 2461 cnt = NFS_SRVMAXDATA(nd); 2462 2463 /* 2464 * siz is a "hint" of how much directory information (name, fileid, 2465 * cookie) should be in the reply. At least one client "hints" 0, 2466 * so I set it to cnt for that case. I also round it up to the 2467 * next multiple of DIRBLKSIZ. 2468 * Since the size of a Readdirplus directory entry reply will always 2469 * be greater than a directory entry returned by VOP_READDIR(), it 2470 * does not make sense to read more than NFS_SRVMAXDATA() via 2471 * VOP_READDIR(). 2472 */ 2473 if (siz <= 0) 2474 siz = cnt; 2475 else if (siz > NFS_SRVMAXDATA(nd)) 2476 siz = NFS_SRVMAXDATA(nd); 2477 siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 2478 2479 if (nd->nd_flag & ND_NFSV4) { 2480 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2481 if (error) 2482 goto nfsmout; 2483 NFSSET_ATTRBIT(&savbits, &attrbits); 2484 NFSSET_ATTRBIT(&refbits, &attrbits); 2485 NFSCLRNOTFILLABLE_ATTRBIT(&attrbits, nd); 2486 NFSZERO_ATTRBIT(&rderrbits); 2487 NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 2488 /* 2489 * If these 4 bits are the only attributes requested by the 2490 * client, they can be satisfied without acquiring the vnode 2491 * for the file object unless it is a directory. 2492 * This will be indicated by savbits being all 0s. 2493 */ 2494 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_TYPE); 2495 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_FILEID); 2496 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_MOUNTEDONFILEID); 2497 NFSCLRBIT_ATTRBIT(&savbits, NFSATTRBIT_RDATTRERROR); 2498 } else { 2499 NFSZERO_ATTRBIT(&attrbits); 2500 } 2501 fullsiz = siz; 2502 nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2503 #if 0 2504 if (!nd->nd_repstat) { 2505 if (off && verf != at.na_filerev) { 2506 /* 2507 * va_filerev is not sufficient as a cookie verifier, 2508 * since it is not supposed to change when entries are 2509 * removed/added unless that offset cookies returned to 2510 * the client are no longer valid. 2511 */ 2512 if (nd->nd_flag & ND_NFSV4) { 2513 nd->nd_repstat = NFSERR_NOTSAME; 2514 } else { 2515 nd->nd_repstat = NFSERR_BAD_COOKIE; 2516 } 2517 } 2518 } 2519 #endif 2520 if (!nd->nd_repstat && vp->v_type != VDIR) 2521 nd->nd_repstat = NFSERR_NOTDIR; 2522 if (!nd->nd_repstat && cnt == 0) 2523 nd->nd_repstat = NFSERR_TOOSMALL; 2524 if (!nd->nd_repstat) 2525 nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 2526 nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 2527 NFSACCCHK_VPISLOCKED, NULL); 2528 if (nd->nd_repstat) { 2529 vput(vp); 2530 if (nd->nd_flag & ND_NFSV3) 2531 nfsrv_postopattr(nd, getret, &at); 2532 goto out; 2533 } 2534 is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 2535 is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0; 2536 2537 rbuf = malloc(siz, M_TEMP, M_WAITOK); 2538 again: 2539 eofflag = 0; 2540 if (cookies) { 2541 free(cookies, M_TEMP); 2542 cookies = NULL; 2543 } 2544 2545 iv.iov_base = rbuf; 2546 iv.iov_len = siz; 2547 io.uio_iov = &iv; 2548 io.uio_iovcnt = 1; 2549 io.uio_offset = (off_t)off; 2550 io.uio_resid = siz; 2551 io.uio_segflg = UIO_SYSSPACE; 2552 io.uio_rw = UIO_READ; 2553 io.uio_td = NULL; 2554 nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 2555 &cookies); 2556 off = (u_int64_t)io.uio_offset; 2557 if (io.uio_resid) 2558 siz -= io.uio_resid; 2559 2560 getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL); 2561 2562 if (!cookies && !nd->nd_repstat) 2563 nd->nd_repstat = NFSERR_PERM; 2564 if (!nd->nd_repstat) 2565 nd->nd_repstat = getret; 2566 if (nd->nd_repstat) { 2567 vput(vp); 2568 if (cookies) 2569 free(cookies, M_TEMP); 2570 free(rbuf, M_TEMP); 2571 if (nd->nd_flag & ND_NFSV3) 2572 nfsrv_postopattr(nd, getret, &at); 2573 goto out; 2574 } 2575 /* 2576 * If nothing read, return eof 2577 * rpc reply 2578 */ 2579 if (siz == 0) { 2580 vput(vp); 2581 if (nd->nd_flag & ND_NFSV3) 2582 nfsrv_postopattr(nd, getret, &at); 2583 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2584 txdr_hyper(at.na_filerev, tl); 2585 tl += 2; 2586 *tl++ = newnfs_false; 2587 *tl = newnfs_true; 2588 free(cookies, M_TEMP); 2589 free(rbuf, M_TEMP); 2590 goto out; 2591 } 2592 2593 /* 2594 * Check for degenerate cases of nothing useful read. 2595 * If so go try again 2596 */ 2597 cpos = rbuf; 2598 cend = rbuf + siz; 2599 dp = (struct dirent *)cpos; 2600 cookiep = cookies; 2601 2602 /* 2603 * For some reason FreeBSD's ufs_readdir() chooses to back the 2604 * directory offset up to a block boundary, so it is necessary to 2605 * skip over the records that precede the requested offset. This 2606 * requires the assumption that file offset cookies monotonically 2607 * increase. 2608 */ 2609 while (cpos < cend && ncookies > 0 && 2610 (dp->d_fileno == 0 || dp->d_type == DT_WHT || 2611 (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) || 2612 ((nd->nd_flag & ND_NFSV4) && 2613 ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 2614 (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 2615 cpos += dp->d_reclen; 2616 dp = (struct dirent *)cpos; 2617 cookiep++; 2618 ncookies--; 2619 } 2620 if (cpos >= cend || ncookies == 0) { 2621 siz = fullsiz; 2622 toff = off; 2623 goto again; 2624 } 2625 2626 /* 2627 * Busy the file system so that the mount point won't go away 2628 * and, as such, VFS_VGET() can be used safely. 2629 */ 2630 mp = vp->v_mount; 2631 vfs_ref(mp); 2632 NFSVOPUNLOCK(vp); 2633 nd->nd_repstat = vfs_busy(mp, 0); 2634 vfs_rel(mp); 2635 if (nd->nd_repstat != 0) { 2636 vrele(vp); 2637 free(cookies, M_TEMP); 2638 free(rbuf, M_TEMP); 2639 if (nd->nd_flag & ND_NFSV3) 2640 nfsrv_postopattr(nd, getret, &at); 2641 goto out; 2642 } 2643 2644 /* 2645 * Check to see if entries in this directory can be safely acquired 2646 * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. 2647 * ZFS snapshot directories need VOP_LOOKUP(), so that any 2648 * automount of the snapshot directory that is required will 2649 * be done. 2650 * This needs to be done here for NFSv4, since NFSv4 never does 2651 * a VFS_VGET() for "." or "..". 2652 */ 2653 if (is_zfs == 1) { 2654 r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); 2655 if (r == EOPNOTSUPP) { 2656 usevget = 0; 2657 cn.cn_nameiop = LOOKUP; 2658 cn.cn_lkflags = LK_SHARED | LK_RETRY; 2659 cn.cn_cred = nd->nd_cred; 2660 } else if (r == 0) 2661 vput(nvp); 2662 } 2663 2664 /* 2665 * If the reply is likely to exceed MCLBYTES and the reply will 2666 * not be saved, use ext_pgs mbufs for TLS. 2667 * It is difficult to predict how large each entry will be and 2668 * how many entries have been read, so just assume the directory 2669 * entries grow by a factor of 4 when attributes are included. 2670 * For NFSv4.0, we do not know for sure if the reply will 2671 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 2672 */ 2673 if (cnt > MCLBYTES && siz > MCLBYTES / 4 && 2674 (nd->nd_flag & (ND_TLS | ND_EXTPG | ND_SAVEREPLY)) == ND_TLS && 2675 (nd->nd_flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4) 2676 nd->nd_flag |= ND_EXTPG; 2677 2678 /* 2679 * Save this position, in case there is an error before one entry 2680 * is created. 2681 */ 2682 mb0 = nd->nd_mb; 2683 bpos0 = nd->nd_bpos; 2684 bextpg0 = nd->nd_bextpg; 2685 bextpgsiz0 = nd->nd_bextpgsiz; 2686 2687 /* 2688 * Fill in the first part of the reply. 2689 * dirlen is the reply length in bytes and cannot exceed cnt. 2690 * (Include the two booleans at the end of the reply in dirlen now, 2691 * so we recognize when we have exceeded cnt.) 2692 */ 2693 if (nd->nd_flag & ND_NFSV3) { 2694 dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2695 nfsrv_postopattr(nd, getret, &at); 2696 } else { 2697 dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2698 } 2699 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2700 txdr_hyper(at.na_filerev, tl); 2701 2702 /* 2703 * Save this position, in case there is an empty reply needed. 2704 */ 2705 mb1 = nd->nd_mb; 2706 bpos1 = nd->nd_bpos; 2707 bextpg1 = nd->nd_bextpg; 2708 bextpgsiz1 = nd->nd_bextpgsiz; 2709 2710 /* Loop through the records and build reply */ 2711 entrycnt = 0; 2712 while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2713 nlen = dp->d_namlen; 2714 if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2715 nlen <= NFS_MAXNAMLEN && 2716 ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2717 (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2718 || (nlen == 1 && dp->d_name[0] != '.'))) { 2719 /* 2720 * Save the current position in the reply, in case 2721 * this entry exceeds cnt. 2722 */ 2723 mb1 = nd->nd_mb; 2724 bpos1 = nd->nd_bpos; 2725 bextpg1 = nd->nd_bextpg; 2726 bextpgsiz1 = nd->nd_bextpgsiz; 2727 2728 /* 2729 * For readdir_and_lookup get the vnode using 2730 * the file number. 2731 */ 2732 nvp = NULL; 2733 refp = NULL; 2734 r = 0; 2735 at_root = 0; 2736 needs_unbusy = 0; 2737 new_mp = mp; 2738 mounted_on_fileno = (uint64_t)dp->d_fileno; 2739 if ((nd->nd_flag & ND_NFSV3) || 2740 NFSNONZERO_ATTRBIT(&savbits) || 2741 dp->d_type == DT_UNKNOWN || 2742 (dp->d_type == DT_DIR && 2743 nfsrv_enable_crossmntpt != 0)) { 2744 if (nd->nd_flag & ND_NFSV4) 2745 refp = nfsv4root_getreferral(NULL, 2746 vp, dp->d_fileno); 2747 if (refp == NULL) { 2748 if (usevget) 2749 r = VFS_VGET(mp, dp->d_fileno, 2750 LK_SHARED, &nvp); 2751 else 2752 r = EOPNOTSUPP; 2753 if (r == 0 && (vn_irflag_read(vp) & 2754 VIRF_NAMEDDIR) != 0) 2755 vn_irflag_set_cond(nvp, 2756 VIRF_NAMEDATTR); 2757 if (r == EOPNOTSUPP) { 2758 if (usevget) { 2759 usevget = 0; 2760 cn.cn_nameiop = LOOKUP; 2761 cn.cn_lkflags = 2762 LK_SHARED | 2763 LK_RETRY; 2764 cn.cn_cred = 2765 nd->nd_cred; 2766 } 2767 cn.cn_nameptr = dp->d_name; 2768 cn.cn_namelen = nlen; 2769 cn.cn_flags = ISLASTCN | 2770 NOFOLLOW | LOCKLEAF; 2771 if ((vn_irflag_read(vp) & 2772 VIRF_NAMEDDIR) != 0) 2773 cn.cn_flags |= 2774 OPENNAMED; 2775 if (nlen == 2 && 2776 dp->d_name[0] == '.' && 2777 dp->d_name[1] == '.') 2778 cn.cn_flags |= 2779 ISDOTDOT; 2780 if (NFSVOPLOCK(vp, LK_SHARED) 2781 != 0) { 2782 nd->nd_repstat = EPERM; 2783 break; 2784 } 2785 if ((vp->v_vflag & VV_ROOT) != 0 2786 && (cn.cn_flags & ISDOTDOT) 2787 != 0) { 2788 vref(vp); 2789 nvp = vp; 2790 r = 0; 2791 } else { 2792 r = VOP_LOOKUP(vp, &nvp, 2793 &cn); 2794 if (vp != nvp) 2795 NFSVOPUNLOCK(vp); 2796 } 2797 } 2798 2799 /* 2800 * For NFSv4, check to see if nvp is 2801 * a mount point and get the mount 2802 * point vnode, as required. 2803 */ 2804 if (r == 0 && 2805 nfsrv_enable_crossmntpt != 0 && 2806 (nd->nd_flag & ND_NFSV4) != 0 && 2807 nvp->v_type == VDIR && 2808 nvp->v_mountedhere != NULL) { 2809 new_mp = nvp->v_mountedhere; 2810 r = vfs_busy(new_mp, 0); 2811 vput(nvp); 2812 nvp = NULL; 2813 if (r == 0) { 2814 r = VFS_ROOT(new_mp, 2815 LK_SHARED, &nvp); 2816 needs_unbusy = 1; 2817 if (r == 0) 2818 at_root = 1; 2819 } 2820 } 2821 } 2822 2823 /* 2824 * If we failed to look up the entry, then it 2825 * has become invalid, most likely removed. 2826 */ 2827 if (r != 0) { 2828 if (needs_unbusy) 2829 vfs_unbusy(new_mp); 2830 goto invalid; 2831 } 2832 KASSERT(refp != NULL || nvp != NULL, 2833 ("%s: undetected lookup error", __func__)); 2834 2835 if (refp == NULL && 2836 ((nd->nd_flag & ND_NFSV3) || 2837 NFSNONZERO_ATTRBIT(&attrbits))) { 2838 r = nfsvno_getfh(nvp, &nfh, p); 2839 if (!r) 2840 r = nfsvno_getattr(nvp, nvap, nd, p, 2841 1, &attrbits); 2842 if (r == 0 && is_zfs == 1 && 2843 nfsrv_enable_crossmntpt != 0 && 2844 (nd->nd_flag & ND_NFSV4) != 0 && 2845 nvp->v_type == VDIR && 2846 vp->v_mount != nvp->v_mount) { 2847 /* 2848 * For a ZFS snapshot, there is a 2849 * pseudo mount that does not set 2850 * v_mountedhere, so it needs to 2851 * be detected via a different 2852 * mount structure. 2853 */ 2854 at_root = 1; 2855 if (new_mp == mp) 2856 new_mp = nvp->v_mount; 2857 } 2858 } 2859 2860 /* 2861 * If we failed to get attributes of the entry, 2862 * then just skip it for NFSv3 (the traditional 2863 * behavior in the old NFS server). 2864 * For NFSv4 the behavior is controlled by 2865 * RDATTRERROR: we either ignore the error or 2866 * fail the request. 2867 * The exception is EOPNOTSUPP, which can be 2868 * returned by nfsvno_getfh() for certain 2869 * file systems, such as devfs. This indicates 2870 * that the file system cannot be exported, 2871 * so just skip over the entry. 2872 * Note that RDATTRERROR is never set for NFSv3. 2873 */ 2874 if (r != 0) { 2875 if (!NFSISSET_ATTRBIT(&attrbits, 2876 NFSATTRBIT_RDATTRERROR) || 2877 r == EOPNOTSUPP) { 2878 vput(nvp); 2879 if (needs_unbusy != 0) 2880 vfs_unbusy(new_mp); 2881 if ((nd->nd_flag & ND_NFSV3) || 2882 r == EOPNOTSUPP) 2883 goto invalid; 2884 nd->nd_repstat = r; 2885 break; 2886 } 2887 } 2888 } else if (NFSNONZERO_ATTRBIT(&attrbits)) { 2889 /* Only need Type and/or Fileid. */ 2890 VATTR_NULL(&nvap->na_vattr); 2891 nvap->na_fileid = dp->d_fileno; 2892 nfs_dtypetovtype(nvap, vp, dp->d_type); 2893 } 2894 2895 /* 2896 * Build the directory record xdr 2897 */ 2898 if (nd->nd_flag & ND_NFSV3) { 2899 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2900 *tl++ = newnfs_true; 2901 txdr_hyper(dp->d_fileno, tl); 2902 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2903 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2904 txdr_hyper(*cookiep, tl); 2905 nfsrv_postopattr(nd, 0, nvap); 2906 dirlen += nfsm_fhtom(NULL, nd, (u_int8_t *)&nfh, 2907 0, 1); 2908 dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2909 if (nvp != NULL) 2910 vput(nvp); 2911 } else { 2912 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2913 *tl++ = newnfs_true; 2914 txdr_hyper(*cookiep, tl); 2915 dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2916 if (nvp != NULL) { 2917 supports_nfsv4acls = 2918 nfs_supportsnfsv4acls(nvp); 2919 NFSVOPUNLOCK(nvp); 2920 } else 2921 supports_nfsv4acls = 0; 2922 if (refp != NULL) { 2923 dirlen += nfsrv_putreferralattr(nd, 2924 &refbits, refp, 0, 2925 &nd->nd_repstat); 2926 if (nd->nd_repstat) { 2927 if (nvp != NULL) 2928 vrele(nvp); 2929 if (needs_unbusy != 0) 2930 vfs_unbusy(new_mp); 2931 break; 2932 } 2933 } else if (r) { 2934 dirlen += nfsvno_fillattr(nd, new_mp, 2935 nvp, nvap, &nfh, r, &rderrbits, 2936 nd->nd_cred, p, isdgram, 0, 2937 supports_nfsv4acls, at_root, 2938 mounted_on_fileno); 2939 } else { 2940 dirlen += nfsvno_fillattr(nd, new_mp, 2941 nvp, nvap, &nfh, r, &attrbits, 2942 nd->nd_cred, p, isdgram, 0, 2943 supports_nfsv4acls, at_root, 2944 mounted_on_fileno); 2945 } 2946 if (nvp != NULL) 2947 vrele(nvp); 2948 dirlen += (3 * NFSX_UNSIGNED); 2949 } 2950 if (needs_unbusy != 0) 2951 vfs_unbusy(new_mp); 2952 if (dirlen <= cnt) 2953 entrycnt++; 2954 } 2955 invalid: 2956 cpos += dp->d_reclen; 2957 dp = (struct dirent *)cpos; 2958 cookiep++; 2959 ncookies--; 2960 } 2961 vrele(vp); 2962 vfs_unbusy(mp); 2963 2964 /* 2965 * If dirlen > cnt, we must strip off the last entry. If that 2966 * results in an empty reply, report NFSERR_TOOSMALL. 2967 */ 2968 if (dirlen > cnt || nd->nd_repstat) { 2969 if (!nd->nd_repstat && entrycnt == 0) 2970 nd->nd_repstat = NFSERR_TOOSMALL; 2971 if (nd->nd_repstat) { 2972 nfsm_trimtrailing(nd, mb0, bpos0, bextpg0, bextpgsiz0); 2973 if (nd->nd_flag & ND_NFSV3) 2974 nfsrv_postopattr(nd, getret, &at); 2975 } else 2976 nfsm_trimtrailing(nd, mb1, bpos1, bextpg1, bextpgsiz1); 2977 eofflag = 0; 2978 } else if (cpos < cend) 2979 eofflag = 0; 2980 if (!nd->nd_repstat) { 2981 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2982 *tl++ = newnfs_false; 2983 if (eofflag) 2984 *tl = newnfs_true; 2985 else 2986 *tl = newnfs_false; 2987 } 2988 free(cookies, M_TEMP); 2989 free(rbuf, M_TEMP); 2990 2991 out: 2992 NFSEXITCODE2(0, nd); 2993 return (0); 2994 nfsmout: 2995 vput(vp); 2996 NFSEXITCODE2(error, nd); 2997 return (error); 2998 } 2999 3000 /* 3001 * Get the settable attributes out of the mbuf list. 3002 * (Return 0 or EBADRPC) 3003 */ 3004 int 3005 nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 3006 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 3007 { 3008 u_int32_t *tl; 3009 struct nfsv2_sattr *sp; 3010 int error = 0, toclient = 0; 3011 3012 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 3013 case ND_NFSV2: 3014 NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 3015 /* 3016 * Some old clients didn't fill in the high order 16bits. 3017 * --> check the low order 2 bytes for 0xffff 3018 */ 3019 if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 3020 nvap->na_mode = nfstov_mode(sp->sa_mode); 3021 if (sp->sa_uid != newnfs_xdrneg1) 3022 nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 3023 if (sp->sa_gid != newnfs_xdrneg1) 3024 nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 3025 if (sp->sa_size != newnfs_xdrneg1) 3026 nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 3027 if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 3028 #ifdef notyet 3029 fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 3030 #else 3031 nvap->na_atime.tv_sec = 3032 fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 3033 nvap->na_atime.tv_nsec = 0; 3034 #endif 3035 } 3036 if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 3037 fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 3038 break; 3039 case ND_NFSV3: 3040 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3041 if (*tl == newnfs_true) { 3042 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3043 nvap->na_mode = nfstov_mode(*tl); 3044 } 3045 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3046 if (*tl == newnfs_true) { 3047 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3048 nvap->na_uid = fxdr_unsigned(uid_t, *tl); 3049 } 3050 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3051 if (*tl == newnfs_true) { 3052 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3053 nvap->na_gid = fxdr_unsigned(gid_t, *tl); 3054 } 3055 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3056 if (*tl == newnfs_true) { 3057 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3058 nvap->na_size = fxdr_hyper(tl); 3059 } 3060 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3061 switch (fxdr_unsigned(int, *tl)) { 3062 case NFSV3SATTRTIME_TOCLIENT: 3063 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3064 fxdr_nfsv3time(tl, &nvap->na_atime); 3065 toclient = 1; 3066 break; 3067 case NFSV3SATTRTIME_TOSERVER: 3068 vfs_timestamp(&nvap->na_atime); 3069 nvap->na_vaflags |= VA_UTIMES_NULL; 3070 break; 3071 } 3072 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3073 switch (fxdr_unsigned(int, *tl)) { 3074 case NFSV3SATTRTIME_TOCLIENT: 3075 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3076 fxdr_nfsv3time(tl, &nvap->na_mtime); 3077 nvap->na_vaflags &= ~VA_UTIMES_NULL; 3078 break; 3079 case NFSV3SATTRTIME_TOSERVER: 3080 vfs_timestamp(&nvap->na_mtime); 3081 if (!toclient) 3082 nvap->na_vaflags |= VA_UTIMES_NULL; 3083 break; 3084 } 3085 break; 3086 case ND_NFSV4: 3087 error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p); 3088 } 3089 nfsmout: 3090 NFSEXITCODE2(error, nd); 3091 return (error); 3092 } 3093 3094 /* 3095 * Handle the setable attributes for V4. 3096 * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 3097 */ 3098 int 3099 nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap, 3100 nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 3101 { 3102 u_int32_t *tl; 3103 int attrsum = 0; 3104 int i, j; 3105 int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 3106 int moderet, toclient = 0; 3107 u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 3108 uid_t uid; 3109 gid_t gid; 3110 u_short mode, mask; /* Same type as va_mode. */ 3111 struct vattr va; 3112 3113 error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 3114 if (error) 3115 goto nfsmout; 3116 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3117 attrsize = fxdr_unsigned(int, *tl); 3118 3119 /* 3120 * Loop around getting the setable attributes. If an unsupported 3121 * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 3122 * Once nd_repstat != 0, do not set the attribute value, but keep 3123 * parsing the attribute(s). 3124 */ 3125 if (retnotsup) { 3126 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3127 bitpos = NFSATTRBIT_MAX; 3128 } else { 3129 bitpos = 0; 3130 } 3131 moderet = 0; 3132 for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 3133 if (attrsum > attrsize) { 3134 error = NFSERR_BADXDR; 3135 goto nfsmout; 3136 } 3137 if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 3138 switch (bitpos) { 3139 case NFSATTRBIT_SIZE: 3140 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3141 if (!nd->nd_repstat) { 3142 if (vp != NULL && vp->v_type != VREG) 3143 nd->nd_repstat = (vp->v_type == VDIR) ? 3144 NFSERR_ISDIR : NFSERR_INVAL; 3145 else 3146 nvap->na_size = fxdr_hyper(tl); 3147 } 3148 attrsum += NFSX_HYPER; 3149 break; 3150 case NFSATTRBIT_ACL: 3151 error = nfsrv_dissectacl(nd, aclp, true, &aceerr, 3152 &aclsize, p); 3153 if (error) 3154 goto nfsmout; 3155 if (aceerr && !nd->nd_repstat) 3156 nd->nd_repstat = aceerr; 3157 attrsum += aclsize; 3158 break; 3159 case NFSATTRBIT_ARCHIVE: 3160 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3161 if (!nd->nd_repstat) 3162 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3163 attrsum += NFSX_UNSIGNED; 3164 break; 3165 case NFSATTRBIT_HIDDEN: 3166 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3167 if (!nd->nd_repstat) 3168 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3169 attrsum += NFSX_UNSIGNED; 3170 break; 3171 case NFSATTRBIT_MIMETYPE: 3172 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3173 i = fxdr_unsigned(int, *tl); 3174 error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 3175 if (error) 3176 goto nfsmout; 3177 if (!nd->nd_repstat) 3178 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3179 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 3180 break; 3181 case NFSATTRBIT_MODE: 3182 moderet = NFSERR_INVAL; /* Can't do MODESETMASKED. */ 3183 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3184 if (!nd->nd_repstat) 3185 nvap->na_mode = nfstov_mode(*tl); 3186 attrsum += NFSX_UNSIGNED; 3187 break; 3188 case NFSATTRBIT_OWNER: 3189 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3190 j = fxdr_unsigned(int, *tl); 3191 if (j < 0) { 3192 error = NFSERR_BADXDR; 3193 goto nfsmout; 3194 } 3195 if (j > NFSV4_SMALLSTR) 3196 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3197 else 3198 cp = namestr; 3199 error = nfsrv_mtostr(nd, cp, j); 3200 if (error) { 3201 if (j > NFSV4_SMALLSTR) 3202 free(cp, M_NFSSTRING); 3203 goto nfsmout; 3204 } 3205 if (!nd->nd_repstat) { 3206 nd->nd_repstat = nfsv4_strtouid(nd, cp, j, 3207 &uid); 3208 if (!nd->nd_repstat) 3209 nvap->na_uid = uid; 3210 } 3211 if (j > NFSV4_SMALLSTR) 3212 free(cp, M_NFSSTRING); 3213 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3214 break; 3215 case NFSATTRBIT_OWNERGROUP: 3216 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3217 j = fxdr_unsigned(int, *tl); 3218 if (j < 0) { 3219 error = NFSERR_BADXDR; 3220 goto nfsmout; 3221 } 3222 if (j > NFSV4_SMALLSTR) 3223 cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 3224 else 3225 cp = namestr; 3226 error = nfsrv_mtostr(nd, cp, j); 3227 if (error) { 3228 if (j > NFSV4_SMALLSTR) 3229 free(cp, M_NFSSTRING); 3230 goto nfsmout; 3231 } 3232 if (!nd->nd_repstat) { 3233 nd->nd_repstat = nfsv4_strtogid(nd, cp, j, 3234 &gid); 3235 if (!nd->nd_repstat) 3236 nvap->na_gid = gid; 3237 } 3238 if (j > NFSV4_SMALLSTR) 3239 free(cp, M_NFSSTRING); 3240 attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 3241 break; 3242 case NFSATTRBIT_SYSTEM: 3243 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3244 if (!nd->nd_repstat) 3245 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3246 attrsum += NFSX_UNSIGNED; 3247 break; 3248 case NFSATTRBIT_TIMEACCESSSET: 3249 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3250 attrsum += NFSX_UNSIGNED; 3251 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3252 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3253 if (!nd->nd_repstat) 3254 fxdr_nfsv4time(tl, &nvap->na_atime); 3255 toclient = 1; 3256 attrsum += NFSX_V4TIME; 3257 } else if (!nd->nd_repstat) { 3258 vfs_timestamp(&nvap->na_atime); 3259 nvap->na_vaflags |= VA_UTIMES_NULL; 3260 } 3261 break; 3262 case NFSATTRBIT_TIMEBACKUP: 3263 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3264 if (!nd->nd_repstat) 3265 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3266 attrsum += NFSX_V4TIME; 3267 break; 3268 case NFSATTRBIT_TIMECREATE: 3269 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3270 if (!nd->nd_repstat) 3271 fxdr_nfsv4time(tl, &nvap->na_btime); 3272 attrsum += NFSX_V4TIME; 3273 break; 3274 case NFSATTRBIT_TIMEMODIFYSET: 3275 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3276 attrsum += NFSX_UNSIGNED; 3277 if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 3278 NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 3279 if (!nd->nd_repstat) 3280 fxdr_nfsv4time(tl, &nvap->na_mtime); 3281 nvap->na_vaflags &= ~VA_UTIMES_NULL; 3282 attrsum += NFSX_V4TIME; 3283 } else if (!nd->nd_repstat) { 3284 vfs_timestamp(&nvap->na_mtime); 3285 if (!toclient) 3286 nvap->na_vaflags |= VA_UTIMES_NULL; 3287 } 3288 break; 3289 case NFSATTRBIT_MODESETMASKED: 3290 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 3291 mode = fxdr_unsigned(u_short, *tl++); 3292 mask = fxdr_unsigned(u_short, *tl); 3293 /* 3294 * vp == NULL implies an Open/Create operation. 3295 * This attribute can only be used for Setattr and 3296 * only for NFSv4.1 or higher. 3297 * If moderet != 0, a mode attribute has also been 3298 * specified and this attribute cannot be done in the 3299 * same Setattr operation. 3300 */ 3301 if (!nd->nd_repstat) { 3302 if ((nd->nd_flag & ND_NFSV41) == 0) 3303 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3304 else if ((mode & ~07777) != 0 || 3305 (mask & ~07777) != 0 || vp == NULL) 3306 nd->nd_repstat = NFSERR_INVAL; 3307 else if (moderet == 0) 3308 moderet = VOP_GETATTR(vp, &va, 3309 nd->nd_cred); 3310 if (moderet == 0) 3311 nvap->na_mode = (mode & mask) | 3312 (va.va_mode & ~mask); 3313 else 3314 nd->nd_repstat = moderet; 3315 } 3316 attrsum += 2 * NFSX_UNSIGNED; 3317 break; 3318 case NFSATTRBIT_MODEUMASK: 3319 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 3320 mode = fxdr_unsigned(u_short, *tl++); 3321 mask = fxdr_unsigned(u_short, *tl); 3322 /* 3323 * If moderet != 0, mode has already been done. 3324 * If vp != NULL, this is not a file object creation. 3325 */ 3326 if (!nd->nd_repstat) { 3327 if ((nd->nd_flag & ND_NFSV42) == 0) 3328 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3329 else if ((mask & ~0777) != 0 || vp != NULL || 3330 moderet != 0) 3331 nd->nd_repstat = NFSERR_INVAL; 3332 else 3333 nvap->na_mode = (mode & ~mask); 3334 } 3335 attrsum += 2 * NFSX_UNSIGNED; 3336 break; 3337 default: 3338 nd->nd_repstat = NFSERR_ATTRNOTSUPP; 3339 /* 3340 * set bitpos so we drop out of the loop. 3341 */ 3342 bitpos = NFSATTRBIT_MAX; 3343 break; 3344 } 3345 } 3346 3347 /* 3348 * some clients pad the attrlist, so we need to skip over the 3349 * padding. This also skips over unparsed non-supported attributes. 3350 */ 3351 if (attrsum > attrsize) { 3352 error = NFSERR_BADXDR; 3353 } else { 3354 attrsize = NFSM_RNDUP(attrsize); 3355 if (attrsum < attrsize) 3356 error = nfsm_advance(nd, attrsize - attrsum, -1); 3357 } 3358 nfsmout: 3359 NFSEXITCODE2(error, nd); 3360 return (error); 3361 } 3362 3363 /* 3364 * Check/setup export credentials. 3365 */ 3366 int 3367 nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 3368 struct ucred *credanon, bool testsec) 3369 { 3370 int error; 3371 3372 /* 3373 * Check/setup credentials. 3374 */ 3375 if (nd->nd_flag & ND_GSS) 3376 exp->nes_exflag &= ~MNT_EXPORTANON; 3377 3378 /* 3379 * Check to see if the operation is allowed for this security flavor. 3380 */ 3381 error = 0; 3382 if (testsec) { 3383 error = nfsvno_testexp(nd, exp); 3384 if (error != 0) 3385 goto out; 3386 } 3387 3388 /* 3389 * Check to see if the file system is exported V4 only. 3390 */ 3391 if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 3392 error = NFSERR_PROGNOTV4; 3393 goto out; 3394 } 3395 3396 /* 3397 * Now, map the user credentials. 3398 * (Note that ND_AUTHNONE will only be set for an NFSv3 3399 * Fsinfo RPC. If set for anything else, this code might need 3400 * to change.) 3401 */ 3402 if (NFSVNO_EXPORTED(exp)) { 3403 if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) || 3404 NFSVNO_EXPORTANON(exp) || 3405 (nd->nd_flag & ND_AUTHNONE) != 0) { 3406 nd->nd_cred->cr_uid = credanon->cr_uid; 3407 /* 3408 * 'credanon' is already a 'struct ucred' that was built 3409 * internally with calls to crsetgroups_fallback(), so 3410 * we don't need a fallback here. 3411 */ 3412 crsetgroups(nd->nd_cred, credanon->cr_ngroups, 3413 credanon->cr_groups); 3414 } else if ((nd->nd_flag & ND_GSS) == 0) { 3415 /* 3416 * If using AUTH_SYS, call nfsrv_getgrpscred() to see 3417 * if there is a replacement credential with a group 3418 * list set up by "nfsuserd -manage-gids". 3419 * If there is no replacement, nfsrv_getgrpscred() 3420 * simply returns its argument. 3421 */ 3422 nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred); 3423 } 3424 } 3425 3426 out: 3427 NFSEXITCODE2(error, nd); 3428 return (error); 3429 } 3430 3431 /* 3432 * Check exports. 3433 */ 3434 int 3435 nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 3436 struct ucred **credp) 3437 { 3438 int error; 3439 3440 error = 0; 3441 *credp = NULL; 3442 MNT_ILOCK(mp); 3443 if (mp->mnt_exjail == NULL || 3444 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3445 error = EACCES; 3446 MNT_IUNLOCK(mp); 3447 if (error == 0) 3448 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3449 &exp->nes_numsecflavor, exp->nes_secflavors); 3450 if (error) { 3451 if (NFSD_VNET(nfs_rootfhset)) { 3452 exp->nes_exflag = 0; 3453 exp->nes_numsecflavor = 0; 3454 error = 0; 3455 } 3456 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3457 MAXSECFLAVORS) { 3458 printf("nfsvno_checkexp: numsecflavors out of range\n"); 3459 exp->nes_numsecflavor = 0; 3460 error = EACCES; 3461 } 3462 NFSEXITCODE(error); 3463 return (error); 3464 } 3465 3466 /* 3467 * Get a vnode for a file handle and export stuff. 3468 */ 3469 int 3470 nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 3471 int lktype, struct vnode **vpp, struct nfsexstuff *exp, 3472 struct ucred **credp) 3473 { 3474 int error; 3475 3476 *credp = NULL; 3477 exp->nes_numsecflavor = 0; 3478 error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 3479 if (error != 0) 3480 /* Make sure the server replies ESTALE to the client. */ 3481 error = ESTALE; 3482 if (nam && !error) { 3483 MNT_ILOCK(mp); 3484 if (mp->mnt_exjail == NULL || 3485 mp->mnt_exjail->cr_prison != curthread->td_ucred->cr_prison) 3486 error = EACCES; 3487 MNT_IUNLOCK(mp); 3488 if (error == 0) 3489 error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 3490 &exp->nes_numsecflavor, exp->nes_secflavors); 3491 if (error) { 3492 if (NFSD_VNET(nfs_rootfhset)) { 3493 exp->nes_exflag = 0; 3494 exp->nes_numsecflavor = 0; 3495 error = 0; 3496 } else { 3497 vput(*vpp); 3498 } 3499 } else if (exp->nes_numsecflavor < 1 || exp->nes_numsecflavor > 3500 MAXSECFLAVORS) { 3501 printf("nfsvno_fhtovp: numsecflavors out of range\n"); 3502 exp->nes_numsecflavor = 0; 3503 error = EACCES; 3504 vput(*vpp); 3505 } 3506 } 3507 NFSEXITCODE(error); 3508 return (error); 3509 } 3510 3511 /* 3512 * nfsd_fhtovp() - convert a fh to a vnode ptr 3513 * - look up fsid in mount list (if not found ret error) 3514 * - get vp and export rights by calling nfsvno_fhtovp() 3515 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 3516 * for AUTH_SYS 3517 * - if mpp != NULL, return the mount point so that it can 3518 * be used for vn_finished_write() by the caller 3519 */ 3520 void 3521 nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 3522 struct vnode **vpp, struct nfsexstuff *exp, 3523 struct mount **mpp, int startwrite, int nextop) 3524 { 3525 struct mount *mp, *mpw; 3526 struct ucred *credanon; 3527 fhandle_t *fhp; 3528 int error; 3529 3530 if (mpp != NULL) 3531 *mpp = NULL; 3532 *vpp = NULL; 3533 fhp = (fhandle_t *)nfp->nfsrvfh_data; 3534 mp = vfs_busyfs(&fhp->fh_fsid); 3535 if (mp == NULL) { 3536 nd->nd_repstat = ESTALE; 3537 goto out; 3538 } 3539 3540 if (startwrite) { 3541 mpw = mp; 3542 error = vn_start_write(NULL, &mpw, V_WAIT); 3543 if (error != 0) { 3544 mpw = NULL; 3545 vfs_unbusy(mp); 3546 nd->nd_repstat = ESTALE; 3547 goto out; 3548 } 3549 if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 3550 lktype = LK_EXCLUSIVE; 3551 } else 3552 mpw = NULL; 3553 3554 nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 3555 &credanon); 3556 vfs_unbusy(mp); 3557 3558 if (nd->nd_repstat == 0 && 3559 nfp->nfsrvfh_len >= NFSX_MYFH + NFSX_V4NAMEDDIRFH && 3560 nfp->nfsrvfh_len <= NFSX_MYFH + NFSX_V4NAMEDATTRFH) { 3561 if (nfp->nfsrvfh_len == NFSX_MYFH + NFSX_V4NAMEDDIRFH) 3562 vn_irflag_set_cond(*vpp, VIRF_NAMEDDIR); 3563 else 3564 vn_irflag_set_cond(*vpp, VIRF_NAMEDATTR); 3565 } 3566 3567 /* 3568 * For NFSv4 without a pseudo root fs, unexported file handles 3569 * can be returned, so that Lookup works everywhere. 3570 */ 3571 if (!nd->nd_repstat && exp->nes_exflag == 0 && 3572 !(nd->nd_flag & ND_NFSV4)) { 3573 vput(*vpp); 3574 *vpp = NULL; 3575 nd->nd_repstat = EACCES; 3576 } 3577 3578 /* 3579 * Personally, I've never seen any point in requiring a 3580 * reserved port#, since only in the rare case where the 3581 * clients are all boxes with secure system privileges, 3582 * does it provide any enhanced security, but... some people 3583 * believe it to be useful and keep putting this code back in. 3584 * (There is also some "security checker" out there that 3585 * complains if the nfs server doesn't enforce this.) 3586 * However, note the following: 3587 * RFC3530 (NFSv4) specifies that a reserved port# not be 3588 * required. 3589 * RFC2623 recommends that, if a reserved port# is checked for, 3590 * that there be a way to turn that off--> ifdef'd. 3591 */ 3592 #ifdef NFS_REQRSVPORT 3593 if (!nd->nd_repstat) { 3594 struct sockaddr_in *saddr; 3595 struct sockaddr_in6 *saddr6; 3596 3597 saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 3598 saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 3599 if (!(nd->nd_flag & ND_NFSV4) && 3600 ((saddr->sin_family == AF_INET && 3601 ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 3602 (saddr6->sin6_family == AF_INET6 && 3603 ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 3604 vput(*vpp); 3605 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 3606 } 3607 } 3608 #endif /* NFS_REQRSVPORT */ 3609 3610 /* 3611 * Check/setup credentials. 3612 */ 3613 if (!nd->nd_repstat) { 3614 nd->nd_saveduid = nd->nd_cred->cr_uid; 3615 nd->nd_repstat = nfsd_excred(nd, exp, credanon, 3616 nfsrv_checkwrongsec(nd, nextop, (*vpp)->v_type)); 3617 if (nd->nd_repstat) 3618 vput(*vpp); 3619 } 3620 if (credanon != NULL) 3621 crfree(credanon); 3622 if (nd->nd_repstat) { 3623 vn_finished_write(mpw); 3624 *vpp = NULL; 3625 } else if (mpp != NULL) { 3626 *mpp = mpw; 3627 } 3628 3629 out: 3630 NFSEXITCODE2(0, nd); 3631 } 3632 3633 /* 3634 * glue for fp. 3635 */ 3636 static int 3637 fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 3638 { 3639 struct filedesc *fdp; 3640 struct file *fp; 3641 int error = 0; 3642 3643 fdp = p->td_proc->p_fd; 3644 if (fd < 0 || fd >= fdp->fd_nfiles || 3645 (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 3646 error = EBADF; 3647 goto out; 3648 } 3649 *fpp = fp; 3650 3651 out: 3652 NFSEXITCODE(error); 3653 return (error); 3654 } 3655 3656 /* 3657 * Called from nfssvc() to update the exports list. Just call 3658 * vfs_export(). This has to be done, since the v4 root fake fs isn't 3659 * in the mount list. 3660 */ 3661 int 3662 nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 3663 { 3664 struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 3665 int error = 0; 3666 struct nameidata nd; 3667 fhandle_t fh; 3668 3669 error = vfs_export(NFSD_VNET(nfsv4root_mnt), &nfsexargp->export, false); 3670 if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 3671 NFSD_VNET(nfs_rootfhset) = 0; 3672 else if (error == 0) { 3673 if (nfsexargp->fspec == NULL) { 3674 error = EPERM; 3675 goto out; 3676 } 3677 /* 3678 * If fspec != NULL, this is the v4root path. 3679 */ 3680 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, nfsexargp->fspec); 3681 if ((error = namei(&nd)) != 0) 3682 goto out; 3683 error = nfsvno_getfh(nd.ni_vp, &fh, p); 3684 vrele(nd.ni_vp); 3685 if (!error) { 3686 NFSD_VNET(nfs_rootfh).nfsrvfh_len = NFSX_MYFH; 3687 NFSBCOPY((caddr_t)&fh, 3688 NFSD_VNET(nfs_rootfh).nfsrvfh_data, 3689 sizeof (fhandle_t)); 3690 NFSD_VNET(nfs_rootfhset) = 1; 3691 } 3692 } 3693 3694 out: 3695 NFSEXITCODE(error); 3696 return (error); 3697 } 3698 3699 /* 3700 * This function needs to test to see if the system is near its limit 3701 * for memory allocation via malloc() or mget() and return True iff 3702 * either of these resources are near their limit. 3703 * XXX (For now, this is just a stub.) 3704 */ 3705 int nfsrv_testmalloclimit = 0; 3706 int 3707 nfsrv_mallocmget_limit(void) 3708 { 3709 static int printmesg = 0; 3710 static int testval = 1; 3711 3712 if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 3713 if ((printmesg++ % 100) == 0) 3714 printf("nfsd: malloc/mget near limit\n"); 3715 return (1); 3716 } 3717 return (0); 3718 } 3719 3720 /* 3721 * BSD specific initialization of a mount point. 3722 */ 3723 void 3724 nfsd_mntinit(void) 3725 { 3726 3727 NFSD_LOCK(); 3728 if (NFSD_VNET(nfsrv_mntinited)) { 3729 NFSD_UNLOCK(); 3730 return; 3731 } 3732 NFSD_VNET(nfsrv_mntinited) = true; 3733 nfsrvd_init(0); 3734 NFSD_UNLOCK(); 3735 3736 NFSD_VNET(nfsv4root_mnt) = malloc(sizeof(struct mount), M_TEMP, 3737 M_WAITOK | M_ZERO); 3738 NFSD_VNET(nfsv4root_mnt)->mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 3739 mtx_init(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx, "nfs4mnt", NULL, MTX_DEF); 3740 lockinit(&NFSD_VNET(nfsv4root_mnt)->mnt_explock, PVFS, "explock", 0, 0); 3741 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelist); 3742 TAILQ_INIT(&NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelist); 3743 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 3744 TAILQ_INIT(&NFSD_VNET(nfsv4root_opt)); 3745 TAILQ_INIT(&NFSD_VNET(nfsv4root_newopt)); 3746 NFSD_VNET(nfsv4root_mnt)->mnt_opt = &NFSD_VNET(nfsv4root_opt); 3747 NFSD_VNET(nfsv4root_mnt)->mnt_optnew = &NFSD_VNET(nfsv4root_newopt); 3748 NFSD_VNET(nfsv4root_mnt)->mnt_nvnodelistsize = 0; 3749 NFSD_VNET(nfsv4root_mnt)->mnt_lazyvnodelistsize = 0; 3750 callout_init(&NFSD_VNET(nfsd_callout), 1); 3751 3752 nfsrvd_initcache(); 3753 nfsd_init(); 3754 } 3755 3756 static void 3757 nfsd_timer(void *arg) 3758 { 3759 struct vnet *vnetp; 3760 3761 vnetp = (struct vnet *)arg; 3762 NFSD_CURVNET_SET_QUIET(vnetp); 3763 nfsrv_servertimer(vnetp); 3764 callout_reset_sbt(&NFSD_VNET(nfsd_callout), SBT_1S, SBT_1S, nfsd_timer, 3765 arg, 0); 3766 NFSD_CURVNET_RESTORE(); 3767 } 3768 3769 /* 3770 * Get a vnode for a file handle, without checking exports, etc. 3771 */ 3772 struct vnode * 3773 nfsvno_getvp(fhandle_t *fhp) 3774 { 3775 struct mount *mp; 3776 struct vnode *vp; 3777 int error; 3778 3779 mp = vfs_busyfs(&fhp->fh_fsid); 3780 if (mp == NULL) 3781 return (NULL); 3782 error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 3783 vfs_unbusy(mp); 3784 if (error) 3785 return (NULL); 3786 return (vp); 3787 } 3788 3789 /* 3790 * Do a local VOP_ADVLOCK(). 3791 */ 3792 int 3793 nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 3794 u_int64_t end, struct thread *td) 3795 { 3796 int error = 0; 3797 struct flock fl; 3798 u_int64_t tlen; 3799 3800 if (nfsrv_dolocallocks == 0) 3801 goto out; 3802 ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked"); 3803 3804 fl.l_whence = SEEK_SET; 3805 fl.l_type = ftype; 3806 fl.l_start = (off_t)first; 3807 if (end == NFS64BITSSET) { 3808 fl.l_len = 0; 3809 } else { 3810 tlen = end - first; 3811 fl.l_len = (off_t)tlen; 3812 } 3813 /* 3814 * For FreeBSD8, the l_pid and l_sysid must be set to the same 3815 * values for all calls, so that all locks will be held by the 3816 * nfsd server. (The nfsd server handles conflicts between the 3817 * various clients.) 3818 * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 3819 * bytes, so it can't be put in l_sysid. 3820 */ 3821 if (nfsv4_sysid == 0) 3822 nfsv4_sysid = nlm_acquire_next_sysid(); 3823 fl.l_pid = (pid_t)0; 3824 fl.l_sysid = (int)nfsv4_sysid; 3825 3826 if (ftype == F_UNLCK) 3827 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3828 (F_POSIX | F_REMOTE)); 3829 else 3830 error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3831 (F_POSIX | F_REMOTE)); 3832 3833 out: 3834 NFSEXITCODE(error); 3835 return (error); 3836 } 3837 3838 /* 3839 * Check the nfsv4 root exports. 3840 */ 3841 int 3842 nfsvno_v4rootexport(struct nfsrv_descript *nd) 3843 { 3844 struct ucred *credanon; 3845 int error = 0, numsecflavor, secflavors[MAXSECFLAVORS], i; 3846 uint64_t exflags; 3847 3848 error = vfs_stdcheckexp(NFSD_VNET(nfsv4root_mnt), nd->nd_nam, &exflags, 3849 &credanon, &numsecflavor, secflavors); 3850 if (error) { 3851 error = NFSERR_PROGUNAVAIL; 3852 goto out; 3853 } 3854 if (credanon != NULL) 3855 crfree(credanon); 3856 for (i = 0; i < numsecflavor; i++) { 3857 if (secflavors[i] == AUTH_SYS) 3858 nd->nd_flag |= ND_EXAUTHSYS; 3859 else if (secflavors[i] == RPCSEC_GSS_KRB5) 3860 nd->nd_flag |= ND_EXGSS; 3861 else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3862 nd->nd_flag |= ND_EXGSSINTEGRITY; 3863 else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3864 nd->nd_flag |= ND_EXGSSPRIVACY; 3865 } 3866 3867 /* And set ND_EXxx flags for TLS. */ 3868 if ((exflags & MNT_EXTLS) != 0) { 3869 nd->nd_flag |= ND_EXTLS; 3870 if ((exflags & MNT_EXTLSCERT) != 0) 3871 nd->nd_flag |= ND_EXTLSCERT; 3872 if ((exflags & MNT_EXTLSCERTUSER) != 0) 3873 nd->nd_flag |= ND_EXTLSCERTUSER; 3874 } 3875 3876 out: 3877 NFSEXITCODE(error); 3878 return (error); 3879 } 3880 3881 /* 3882 * Nfs server pseudo system call for the nfsd's 3883 */ 3884 /* 3885 * MPSAFE 3886 */ 3887 static int 3888 nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3889 { 3890 struct file *fp; 3891 struct nfsd_addsock_args sockarg; 3892 struct nfsd_nfsd_args nfsdarg; 3893 struct nfsd_nfsd_oargs onfsdarg; 3894 struct nfsd_pnfsd_args pnfsdarg; 3895 struct vnode *vp, *nvp, *curdvp; 3896 struct pnfsdsfile *pf; 3897 struct nfsdevice *ds, *fds; 3898 cap_rights_t rights; 3899 int buflen, error, ret; 3900 char *buf, *cp, *cp2, *cp3; 3901 char fname[PNFS_FILENAME_LEN + 1]; 3902 3903 NFSD_CURVNET_SET(NFSD_TD_TO_VNET(td)); 3904 if (uap->flag & NFSSVC_NFSDADDSOCK) { 3905 error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3906 if (error) 3907 goto out; 3908 /* 3909 * Since we don't know what rights might be required, 3910 * pretend that we need them all. It is better to be too 3911 * careful than too reckless. 3912 */ 3913 error = fget(td, sockarg.sock, 3914 cap_rights_init_one(&rights, CAP_SOCK_SERVER), &fp); 3915 if (error != 0) 3916 goto out; 3917 if (fp->f_type != DTYPE_SOCKET) { 3918 fdrop(fp, td); 3919 error = EPERM; 3920 goto out; 3921 } 3922 error = nfsrvd_addsock(fp); 3923 fdrop(fp, td); 3924 } else if (uap->flag & NFSSVC_NFSDNFSD) { 3925 if (uap->argp == NULL) { 3926 error = EINVAL; 3927 goto out; 3928 } 3929 if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) { 3930 error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg)); 3931 if (error == 0) { 3932 nfsdarg.principal = onfsdarg.principal; 3933 nfsdarg.minthreads = onfsdarg.minthreads; 3934 nfsdarg.maxthreads = onfsdarg.maxthreads; 3935 nfsdarg.version = 1; 3936 nfsdarg.addr = NULL; 3937 nfsdarg.addrlen = 0; 3938 nfsdarg.dnshost = NULL; 3939 nfsdarg.dnshostlen = 0; 3940 nfsdarg.dspath = NULL; 3941 nfsdarg.dspathlen = 0; 3942 nfsdarg.mdspath = NULL; 3943 nfsdarg.mdspathlen = 0; 3944 nfsdarg.mirrorcnt = 1; 3945 } 3946 } else 3947 error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg)); 3948 if (error) 3949 goto out; 3950 if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 && 3951 nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 && 3952 nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 && 3953 nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 && 3954 nfsdarg.mirrorcnt >= 1 && 3955 nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS && 3956 nfsdarg.addr != NULL && nfsdarg.dnshost != NULL && 3957 nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) { 3958 NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d" 3959 " mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen, 3960 nfsdarg.dspathlen, nfsdarg.dnshostlen, 3961 nfsdarg.mdspathlen, nfsdarg.mirrorcnt); 3962 cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK); 3963 error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen); 3964 if (error != 0) { 3965 free(cp, M_TEMP); 3966 goto out; 3967 } 3968 cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */ 3969 nfsdarg.addr = cp; 3970 cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK); 3971 error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen); 3972 if (error != 0) { 3973 free(nfsdarg.addr, M_TEMP); 3974 free(cp, M_TEMP); 3975 goto out; 3976 } 3977 cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */ 3978 nfsdarg.dnshost = cp; 3979 cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK); 3980 error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen); 3981 if (error != 0) { 3982 free(nfsdarg.addr, M_TEMP); 3983 free(nfsdarg.dnshost, M_TEMP); 3984 free(cp, M_TEMP); 3985 goto out; 3986 } 3987 cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */ 3988 nfsdarg.dspath = cp; 3989 cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK); 3990 error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen); 3991 if (error != 0) { 3992 free(nfsdarg.addr, M_TEMP); 3993 free(nfsdarg.dnshost, M_TEMP); 3994 free(nfsdarg.dspath, M_TEMP); 3995 free(cp, M_TEMP); 3996 goto out; 3997 } 3998 cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */ 3999 nfsdarg.mdspath = cp; 4000 } else { 4001 nfsdarg.addr = NULL; 4002 nfsdarg.addrlen = 0; 4003 nfsdarg.dnshost = NULL; 4004 nfsdarg.dnshostlen = 0; 4005 nfsdarg.dspath = NULL; 4006 nfsdarg.dspathlen = 0; 4007 nfsdarg.mdspath = NULL; 4008 nfsdarg.mdspathlen = 0; 4009 nfsdarg.mirrorcnt = 1; 4010 } 4011 nfsd_timer(NFSD_TD_TO_VNET(td)); 4012 error = nfsrvd_nfsd(td, &nfsdarg); 4013 callout_drain(&NFSD_VNET(nfsd_callout)); 4014 free(nfsdarg.addr, M_TEMP); 4015 free(nfsdarg.dnshost, M_TEMP); 4016 free(nfsdarg.dspath, M_TEMP); 4017 free(nfsdarg.mdspath, M_TEMP); 4018 } else if (uap->flag & NFSSVC_PNFSDS) { 4019 error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg)); 4020 if (error == 0 && (pnfsdarg.op == PNFSDOP_DELDSSERVER || 4021 pnfsdarg.op == PNFSDOP_FORCEDELDS)) { 4022 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 4023 error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1, 4024 NULL); 4025 if (error == 0) 4026 error = nfsrv_deldsserver(pnfsdarg.op, cp, td); 4027 free(cp, M_TEMP); 4028 } else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) { 4029 cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 4030 buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS; 4031 buf = malloc(buflen, M_TEMP, M_WAITOK); 4032 error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1, 4033 NULL); 4034 NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error); 4035 if (error == 0 && pnfsdarg.dspath != NULL) { 4036 cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 4037 error = copyinstr(pnfsdarg.dspath, cp2, 4038 PATH_MAX + 1, NULL); 4039 NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n", 4040 error); 4041 } else 4042 cp2 = NULL; 4043 if (error == 0 && pnfsdarg.curdspath != NULL) { 4044 cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK); 4045 error = copyinstr(pnfsdarg.curdspath, cp3, 4046 PATH_MAX + 1, NULL); 4047 NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n", 4048 error); 4049 } else 4050 cp3 = NULL; 4051 curdvp = NULL; 4052 fds = NULL; 4053 if (error == 0) 4054 error = nfsrv_mdscopymr(cp, cp2, cp3, buf, 4055 &buflen, fname, td, &vp, &nvp, &pf, &ds, 4056 &fds); 4057 NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error); 4058 if (error == 0) { 4059 if (pf->dsf_dir >= nfsrv_dsdirsize) { 4060 printf("copymr: dsdir out of range\n"); 4061 pf->dsf_dir = 0; 4062 } 4063 NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen); 4064 error = nfsrv_copymr(vp, nvp, 4065 ds->nfsdev_dsdir[pf->dsf_dir], ds, pf, 4066 (struct pnfsdsfile *)buf, 4067 buflen / sizeof(*pf), td->td_ucred, td); 4068 vput(vp); 4069 vput(nvp); 4070 if (fds != NULL && error == 0) { 4071 curdvp = fds->nfsdev_dsdir[pf->dsf_dir]; 4072 ret = vn_lock(curdvp, LK_EXCLUSIVE); 4073 if (ret == 0) { 4074 nfsrv_dsremove(curdvp, fname, 4075 td->td_ucred, td); 4076 NFSVOPUNLOCK(curdvp); 4077 } 4078 } 4079 NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error); 4080 } 4081 free(cp, M_TEMP); 4082 free(cp2, M_TEMP); 4083 free(cp3, M_TEMP); 4084 free(buf, M_TEMP); 4085 } 4086 } else { 4087 error = nfssvc_srvcall(td, uap, td->td_ucred); 4088 } 4089 4090 out: 4091 NFSD_CURVNET_RESTORE(); 4092 NFSEXITCODE(error); 4093 return (error); 4094 } 4095 4096 static int 4097 nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 4098 { 4099 struct nfsex_args export; 4100 struct nfsex_oldargs oexp; 4101 struct file *fp = NULL; 4102 int stablefd, i, len; 4103 struct nfsd_clid adminrevoke; 4104 struct nfsd_dumplist dumplist; 4105 struct nfsd_dumpclients *dumpclients; 4106 struct nfsd_dumplocklist dumplocklist; 4107 struct nfsd_dumplocks *dumplocks; 4108 struct nameidata nd; 4109 vnode_t vp; 4110 int error = EINVAL, igotlock; 4111 struct proc *procp; 4112 gid_t *grps; 4113 4114 if (uap->flag & NFSSVC_PUBLICFH) { 4115 NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 4116 sizeof (fhandle_t)); 4117 error = copyin(uap->argp, 4118 &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 4119 if (!error) 4120 nfs_pubfhset = 1; 4121 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 4122 (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) { 4123 error = copyin(uap->argp,(caddr_t)&export, 4124 sizeof (struct nfsex_args)); 4125 if (!error) { 4126 grps = NULL; 4127 if (export.export.ex_ngroups > NGROUPS_MAX || 4128 export.export.ex_ngroups < 0) 4129 error = EINVAL; 4130 else if (export.export.ex_ngroups > 0) { 4131 grps = malloc(export.export.ex_ngroups * 4132 sizeof(gid_t), M_TEMP, M_WAITOK); 4133 error = copyin(export.export.ex_groups, grps, 4134 export.export.ex_ngroups * sizeof(gid_t)); 4135 export.export.ex_groups = grps; 4136 } else 4137 export.export.ex_groups = NULL; 4138 if (!error) 4139 error = nfsrv_v4rootexport(&export, cred, p); 4140 free(grps, M_TEMP); 4141 } 4142 } else if ((uap->flag & (NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT)) == 4143 NFSSVC_V4ROOTEXPORT) { 4144 error = copyin(uap->argp,(caddr_t)&oexp, 4145 sizeof (struct nfsex_oldargs)); 4146 if (!error) { 4147 memset(&export.export, 0, sizeof(export.export)); 4148 export.export.ex_flags = (uint64_t)oexp.export.ex_flags; 4149 export.export.ex_root = oexp.export.ex_root; 4150 export.export.ex_uid = oexp.export.ex_anon.cr_uid; 4151 export.export.ex_ngroups = 4152 oexp.export.ex_anon.cr_ngroups; 4153 export.export.ex_groups = NULL; 4154 if (export.export.ex_ngroups > XU_NGROUPS || 4155 export.export.ex_ngroups < 0) 4156 error = EINVAL; 4157 else if (export.export.ex_ngroups > 0) { 4158 export.export.ex_groups = malloc( 4159 export.export.ex_ngroups * sizeof(gid_t), 4160 M_TEMP, M_WAITOK); 4161 for (i = 0; i < export.export.ex_ngroups; i++) 4162 export.export.ex_groups[i] = 4163 oexp.export.ex_anon.cr_groups[i]; 4164 } 4165 export.export.ex_addr = oexp.export.ex_addr; 4166 export.export.ex_addrlen = oexp.export.ex_addrlen; 4167 export.export.ex_mask = oexp.export.ex_mask; 4168 export.export.ex_masklen = oexp.export.ex_masklen; 4169 export.export.ex_indexfile = oexp.export.ex_indexfile; 4170 export.export.ex_numsecflavors = 4171 oexp.export.ex_numsecflavors; 4172 if (export.export.ex_numsecflavors >= MAXSECFLAVORS || 4173 export.export.ex_numsecflavors < 0) 4174 error = EINVAL; 4175 else { 4176 for (i = 0; i < export.export.ex_numsecflavors; 4177 i++) 4178 export.export.ex_secflavors[i] = 4179 oexp.export.ex_secflavors[i]; 4180 } 4181 export.fspec = oexp.fspec; 4182 if (error == 0) 4183 error = nfsrv_v4rootexport(&export, cred, p); 4184 free(export.export.ex_groups, M_TEMP); 4185 } 4186 } else if (uap->flag & NFSSVC_NOPUBLICFH) { 4187 nfs_pubfhset = 0; 4188 error = 0; 4189 } else if (uap->flag & NFSSVC_STABLERESTART) { 4190 error = copyin(uap->argp, (caddr_t)&stablefd, 4191 sizeof (int)); 4192 if (!error) 4193 error = fp_getfvp(p, stablefd, &fp, &vp); 4194 if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 4195 error = EBADF; 4196 if (!error && NFSD_VNET(nfsrv_numnfsd) != 0) 4197 error = ENXIO; 4198 if (!error) { 4199 NFSD_VNET(nfsrv_stablefirst).nsf_fp = fp; 4200 nfsrv_setupstable(p); 4201 } 4202 } else if (uap->flag & NFSSVC_ADMINREVOKE) { 4203 error = copyin(uap->argp, (caddr_t)&adminrevoke, 4204 sizeof (struct nfsd_clid)); 4205 if (!error) 4206 error = nfsrv_adminrevoke(&adminrevoke, p); 4207 } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 4208 error = copyin(uap->argp, (caddr_t)&dumplist, 4209 sizeof (struct nfsd_dumplist)); 4210 if (!error && (dumplist.ndl_size < 1 || 4211 dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 4212 error = EPERM; 4213 if (!error) { 4214 len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 4215 dumpclients = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4216 nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 4217 error = copyout(dumpclients, dumplist.ndl_list, len); 4218 free(dumpclients, M_TEMP); 4219 } 4220 } else if (uap->flag & NFSSVC_DUMPLOCKS) { 4221 error = copyin(uap->argp, (caddr_t)&dumplocklist, 4222 sizeof (struct nfsd_dumplocklist)); 4223 if (!error && (dumplocklist.ndllck_size < 1 || 4224 dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 4225 error = EPERM; 4226 if (!error) 4227 error = nfsrv_lookupfilename(&nd, 4228 dumplocklist.ndllck_fname, p); 4229 if (!error) { 4230 len = sizeof (struct nfsd_dumplocks) * 4231 dumplocklist.ndllck_size; 4232 dumplocks = malloc(len, M_TEMP, M_WAITOK | M_ZERO); 4233 nfsrv_dumplocks(nd.ni_vp, dumplocks, 4234 dumplocklist.ndllck_size, p); 4235 vput(nd.ni_vp); 4236 error = copyout(dumplocks, dumplocklist.ndllck_list, 4237 len); 4238 free(dumplocks, M_TEMP); 4239 } 4240 } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 4241 procp = p->td_proc; 4242 PROC_LOCK(procp); 4243 nfsd_master_pid = procp->p_pid; 4244 bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 4245 nfsd_master_start = procp->p_stats->p_start; 4246 NFSD_VNET(nfsd_master_proc) = procp; 4247 PROC_UNLOCK(procp); 4248 } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 4249 NFSLOCKV4ROOTMUTEX(); 4250 if (!NFSD_VNET(nfsrv_suspend_nfsd)) { 4251 /* Lock out all nfsd threads */ 4252 do { 4253 igotlock = nfsv4_lock( 4254 &NFSD_VNET(nfsd_suspend_lock), 1, NULL, 4255 NFSV4ROOTLOCKMUTEXPTR, NULL); 4256 } while (igotlock == 0 && 4257 !NFSD_VNET(nfsrv_suspend_nfsd)); 4258 NFSD_VNET(nfsrv_suspend_nfsd) = true; 4259 } 4260 NFSUNLOCKV4ROOTMUTEX(); 4261 error = 0; 4262 } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 4263 NFSLOCKV4ROOTMUTEX(); 4264 if (NFSD_VNET(nfsrv_suspend_nfsd)) { 4265 nfsv4_unlock(&NFSD_VNET(nfsd_suspend_lock), 0); 4266 NFSD_VNET(nfsrv_suspend_nfsd) = false; 4267 } 4268 NFSUNLOCKV4ROOTMUTEX(); 4269 error = 0; 4270 } 4271 4272 NFSEXITCODE(error); 4273 return (error); 4274 } 4275 4276 /* 4277 * Check exports. 4278 * Returns 0 if ok, 1 otherwise. 4279 */ 4280 int 4281 nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 4282 { 4283 int i; 4284 4285 if ((NFSVNO_EXTLS(exp) && (nd->nd_flag & ND_TLS) == 0) || 4286 (NFSVNO_EXTLSCERT(exp) && 4287 (nd->nd_flag & ND_TLSCERT) == 0) || 4288 (NFSVNO_EXTLSCERTUSER(exp) && 4289 (nd->nd_flag & ND_TLSCERTUSER) == 0)) { 4290 if ((nd->nd_flag & ND_NFSV4) != 0) 4291 return (NFSERR_WRONGSEC); 4292 #ifdef notnow 4293 /* There is currently no auth_stat for this. */ 4294 else if ((nd->nd_flag & ND_TLS) == 0) 4295 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS); 4296 else 4297 return (NFSERR_AUTHERR | AUTH_NEEDS_TLS_MUTUAL_HOST); 4298 #endif 4299 else 4300 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4301 } 4302 4303 /* 4304 * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to use 4305 * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 4306 */ 4307 if ((nd->nd_flag & ND_NFSV3) != 0 && nd->nd_procnum == NFSPROC_FSINFO) 4308 return (0); 4309 4310 /* 4311 * This seems odd, but allow the case where the security flavor 4312 * list is empty. This happens when NFSv4 is traversing non-exported 4313 * file systems. Exported file systems should always have a non-empty 4314 * security flavor list. 4315 */ 4316 if (exp->nes_numsecflavor == 0) 4317 return (0); 4318 4319 for (i = 0; i < exp->nes_numsecflavor; i++) { 4320 /* 4321 * The tests for privacy and integrity must be first, 4322 * since ND_GSS is set for everything but AUTH_SYS. 4323 */ 4324 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 4325 (nd->nd_flag & ND_GSSPRIVACY)) 4326 return (0); 4327 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 4328 (nd->nd_flag & ND_GSSINTEGRITY)) 4329 return (0); 4330 if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 4331 (nd->nd_flag & ND_GSS)) 4332 return (0); 4333 if (exp->nes_secflavors[i] == AUTH_SYS && 4334 (nd->nd_flag & ND_GSS) == 0) 4335 return (0); 4336 } 4337 if ((nd->nd_flag & ND_NFSV4) != 0) 4338 return (NFSERR_WRONGSEC); 4339 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 4340 } 4341 4342 /* 4343 * Calculate a hash value for the fid in a file handle. 4344 */ 4345 uint32_t 4346 nfsrv_hashfh(fhandle_t *fhp) 4347 { 4348 uint32_t hashval; 4349 4350 hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 4351 return (hashval); 4352 } 4353 4354 /* 4355 * Calculate a hash value for the sessionid. 4356 */ 4357 uint32_t 4358 nfsrv_hashsessionid(uint8_t *sessionid) 4359 { 4360 uint32_t hashval; 4361 4362 hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); 4363 return (hashval); 4364 } 4365 4366 /* 4367 * Signal the userland master nfsd to backup the stable restart file. 4368 */ 4369 void 4370 nfsrv_backupstable(void) 4371 { 4372 struct proc *procp; 4373 4374 if (NFSD_VNET(nfsd_master_proc) != NULL) { 4375 procp = pfind(nfsd_master_pid); 4376 /* Try to make sure it is the correct process. */ 4377 if (procp == NFSD_VNET(nfsd_master_proc) && 4378 procp->p_stats->p_start.tv_sec == 4379 nfsd_master_start.tv_sec && 4380 procp->p_stats->p_start.tv_usec == 4381 nfsd_master_start.tv_usec && 4382 strcmp(procp->p_comm, nfsd_master_comm) == 0) 4383 kern_psignal(procp, SIGUSR2); 4384 else 4385 NFSD_VNET(nfsd_master_proc) = NULL; 4386 4387 if (procp != NULL) 4388 PROC_UNLOCK(procp); 4389 } 4390 } 4391 4392 /* 4393 * Create a DS data file for nfsrv_pnfscreate(). Called for each mirror. 4394 * The arguments are in a structure, so that they can be passed through 4395 * taskqueue for a kernel process to execute this function. 4396 */ 4397 struct nfsrvdscreate { 4398 int done; 4399 int inprog; 4400 struct task tsk; 4401 struct ucred *tcred; 4402 struct vnode *dvp; 4403 NFSPROC_T *p; 4404 struct pnfsdsfile *pf; 4405 int err; 4406 fhandle_t fh; 4407 struct vattr va; 4408 struct vattr createva; 4409 }; 4410 4411 int 4412 nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap, 4413 fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa, 4414 char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp) 4415 { 4416 struct vnode *nvp; 4417 struct nameidata named; 4418 struct vattr va; 4419 char *bufp; 4420 u_long *hashp; 4421 struct nfsnode *np; 4422 struct nfsmount *nmp; 4423 int error; 4424 4425 NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE, 4426 LOCKPARENT | LOCKLEAF | NOCACHE); 4427 nfsvno_setpathbuf(&named, &bufp, &hashp); 4428 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE; 4429 named.ni_cnd.cn_nameptr = bufp; 4430 if (fnamep != NULL) { 4431 strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1); 4432 named.ni_cnd.cn_namelen = strlen(bufp); 4433 } else 4434 named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp); 4435 NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp); 4436 4437 /* Create the date file in the DS mount. */ 4438 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4439 if (error == 0) { 4440 error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap); 4441 vref(dvp); 4442 VOP_VPUT_PAIR(dvp, error == 0 ? &nvp : NULL, false); 4443 if (error == 0) { 4444 /* Set the ownership of the file. */ 4445 error = VOP_SETATTR(nvp, nvap, tcred); 4446 NFSD_DEBUG(4, "nfsrv_dscreate:" 4447 " setattr-uid=%d\n", error); 4448 if (error != 0) 4449 vput(nvp); 4450 } 4451 if (error != 0) 4452 printf("pNFS: pnfscreate failed=%d\n", error); 4453 } else 4454 printf("pNFS: pnfscreate vnlock=%d\n", error); 4455 if (error == 0) { 4456 np = VTONFS(nvp); 4457 nmp = VFSTONFS(nvp->v_mount); 4458 if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs") 4459 != 0 || nmp->nm_nam->sa_len > sizeof( 4460 struct sockaddr_in6) || 4461 np->n_fhp->nfh_len != NFSX_MYFH) { 4462 printf("Bad DS file: fstype=%s salen=%d" 4463 " fhlen=%d\n", 4464 nvp->v_mount->mnt_vfc->vfc_name, 4465 nmp->nm_nam->sa_len, np->n_fhp->nfh_len); 4466 error = ENOENT; 4467 } 4468 4469 /* Set extattrs for the DS on the MDS file. */ 4470 if (error == 0) { 4471 if (dsa != NULL) { 4472 error = VOP_GETATTR(nvp, &va, tcred); 4473 if (error == 0) { 4474 dsa->dsa_filerev = va.va_filerev; 4475 dsa->dsa_size = va.va_size; 4476 dsa->dsa_atime = va.va_atime; 4477 dsa->dsa_mtime = va.va_mtime; 4478 dsa->dsa_bytes = va.va_bytes; 4479 } 4480 } 4481 if (error == 0) { 4482 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, 4483 NFSX_MYFH); 4484 NFSBCOPY(nmp->nm_nam, &pf->dsf_sin, 4485 nmp->nm_nam->sa_len); 4486 NFSBCOPY(named.ni_cnd.cn_nameptr, 4487 pf->dsf_filename, 4488 sizeof(pf->dsf_filename)); 4489 } 4490 } else 4491 printf("pNFS: pnfscreate can't get DS" 4492 " attr=%d\n", error); 4493 if (nvpp != NULL && error == 0) 4494 *nvpp = nvp; 4495 else 4496 vput(nvp); 4497 } 4498 nfsvno_relpathbuf(&named); 4499 return (error); 4500 } 4501 4502 /* 4503 * Start up the thread that will execute nfsrv_dscreate(). 4504 */ 4505 static void 4506 start_dscreate(void *arg, int pending) 4507 { 4508 struct nfsrvdscreate *dsc; 4509 4510 dsc = (struct nfsrvdscreate *)arg; 4511 dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh, 4512 dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL); 4513 dsc->done = 1; 4514 NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err); 4515 } 4516 4517 /* 4518 * Create a pNFS data file on the Data Server(s). 4519 */ 4520 static void 4521 nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred, 4522 NFSPROC_T *p) 4523 { 4524 struct nfsrvdscreate *dsc, *tdsc = NULL; 4525 struct nfsdevice *ds, *tds, *fds; 4526 struct mount *mp; 4527 struct pnfsdsfile *pf, *tpf; 4528 struct pnfsdsattr dsattr; 4529 struct vattr va; 4530 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4531 struct nfsmount *nmp; 4532 fhandle_t fh; 4533 uid_t vauid; 4534 gid_t vagid; 4535 u_short vamode; 4536 struct ucred *tcred; 4537 int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret; 4538 int failpos, timo; 4539 4540 /* Get a DS server directory in a round-robin order. */ 4541 mirrorcnt = 1; 4542 mp = vp->v_mount; 4543 ds = fds = NULL; 4544 NFSDDSLOCK(); 4545 /* 4546 * Search for the first entry that handles this MDS fs, but use the 4547 * first entry for all MDS fs's otherwise. 4548 */ 4549 TAILQ_FOREACH(tds, &nfsrv_devidhead, nfsdev_list) { 4550 if (tds->nfsdev_nmp != NULL) { 4551 if (tds->nfsdev_mdsisset == 0 && ds == NULL) 4552 ds = tds; 4553 else if (tds->nfsdev_mdsisset != 0 && fsidcmp( 4554 &mp->mnt_stat.f_fsid, &tds->nfsdev_mdsfsid) == 0) { 4555 ds = fds = tds; 4556 break; 4557 } 4558 } 4559 } 4560 if (ds == NULL) { 4561 NFSDDSUNLOCK(); 4562 NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n"); 4563 return; 4564 } 4565 i = dsdir[0] = ds->nfsdev_nextdir; 4566 ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize; 4567 dvp[0] = ds->nfsdev_dsdir[i]; 4568 tds = TAILQ_NEXT(ds, nfsdev_list); 4569 if (nfsrv_maxpnfsmirror > 1 && tds != NULL) { 4570 TAILQ_FOREACH_FROM(tds, &nfsrv_devidhead, nfsdev_list) { 4571 if (tds->nfsdev_nmp != NULL && 4572 ((tds->nfsdev_mdsisset == 0 && fds == NULL) || 4573 (tds->nfsdev_mdsisset != 0 && fds != NULL && 4574 fsidcmp(&mp->mnt_stat.f_fsid, 4575 &tds->nfsdev_mdsfsid) == 0))) { 4576 dsdir[mirrorcnt] = i; 4577 dvp[mirrorcnt] = tds->nfsdev_dsdir[i]; 4578 mirrorcnt++; 4579 if (mirrorcnt >= nfsrv_maxpnfsmirror) 4580 break; 4581 } 4582 } 4583 } 4584 /* Put at end of list to implement round-robin usage. */ 4585 TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list); 4586 TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list); 4587 NFSDDSUNLOCK(); 4588 dsc = NULL; 4589 if (mirrorcnt > 1) 4590 tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP, 4591 M_WAITOK | M_ZERO); 4592 tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK | 4593 M_ZERO); 4594 4595 error = nfsvno_getfh(vp, &fh, p); 4596 if (error == 0) 4597 error = VOP_GETATTR(vp, &va, cred); 4598 if (error == 0) { 4599 /* Set the attributes for "vp" to Setattr the DS vp. */ 4600 vauid = va.va_uid; 4601 vagid = va.va_gid; 4602 vamode = va.va_mode; 4603 VATTR_NULL(&va); 4604 va.va_uid = vauid; 4605 va.va_gid = vagid; 4606 va.va_mode = vamode; 4607 va.va_size = 0; 4608 } else 4609 printf("pNFS: pnfscreate getfh+attr=%d\n", error); 4610 4611 NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid, 4612 cred->cr_gid); 4613 /* Make data file name based on FH. */ 4614 tcred = newnfs_getcred(); 4615 4616 /* 4617 * Create the file on each DS mirror, using kernel process(es) for the 4618 * additional mirrors. 4619 */ 4620 failpos = -1; 4621 for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) { 4622 tpf->dsf_dir = dsdir[i]; 4623 tdsc->tcred = tcred; 4624 tdsc->p = p; 4625 tdsc->pf = tpf; 4626 tdsc->createva = *vap; 4627 NFSBCOPY(&fh, &tdsc->fh, sizeof(fh)); 4628 tdsc->va = va; 4629 tdsc->dvp = dvp[i]; 4630 tdsc->done = 0; 4631 tdsc->inprog = 0; 4632 tdsc->err = 0; 4633 ret = EIO; 4634 if (nfs_pnfsiothreads != 0) { 4635 ret = nfs_pnfsio(start_dscreate, tdsc); 4636 NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret); 4637 } 4638 if (ret != 0) { 4639 ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL, 4640 NULL, tcred, p, NULL); 4641 if (ret != 0) { 4642 KASSERT(error == 0, ("nfsrv_dscreate err=%d", 4643 error)); 4644 if (failpos == -1 && nfsds_failerr(ret)) 4645 failpos = i; 4646 else 4647 error = ret; 4648 } 4649 } 4650 } 4651 if (error == 0) { 4652 tpf->dsf_dir = dsdir[mirrorcnt - 1]; 4653 error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf, 4654 &dsattr, NULL, tcred, p, NULL); 4655 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) { 4656 failpos = mirrorcnt - 1; 4657 error = 0; 4658 } 4659 } 4660 timo = hz / 50; /* Wait for 20msec. */ 4661 if (timo < 1) 4662 timo = 1; 4663 /* Wait for kernel task(s) to complete. */ 4664 for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) { 4665 while (tdsc->inprog != 0 && tdsc->done == 0) 4666 tsleep(&tdsc->tsk, PVFS, "srvdcr", timo); 4667 if (tdsc->err != 0) { 4668 if (failpos == -1 && nfsds_failerr(tdsc->err)) 4669 failpos = i; 4670 else if (error == 0) 4671 error = tdsc->err; 4672 } 4673 } 4674 4675 /* 4676 * If failpos has been set, that mirror has failed, so it needs 4677 * to be disabled. 4678 */ 4679 if (failpos >= 0) { 4680 nmp = VFSTONFS(dvp[failpos]->v_mount); 4681 NFSLOCKMNT(nmp); 4682 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4683 NFSMNTP_CANCELRPCS)) == 0) { 4684 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4685 NFSUNLOCKMNT(nmp); 4686 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4687 NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos, 4688 ds); 4689 if (ds != NULL) 4690 nfsrv_killrpcs(nmp); 4691 NFSLOCKMNT(nmp); 4692 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4693 wakeup(nmp); 4694 } 4695 NFSUNLOCKMNT(nmp); 4696 } 4697 4698 NFSFREECRED(tcred); 4699 if (error == 0) { 4700 ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp"); 4701 4702 NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n", 4703 mirrorcnt, nfsrv_maxpnfsmirror); 4704 /* 4705 * For all mirrors that couldn't be created, fill in the 4706 * *pf structure, but with an IP address == 0.0.0.0. 4707 */ 4708 tpf = pf + mirrorcnt; 4709 for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) { 4710 *tpf = *pf; 4711 tpf->dsf_sin.sin_family = AF_INET; 4712 tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in); 4713 tpf->dsf_sin.sin_addr.s_addr = 0; 4714 tpf->dsf_sin.sin_port = 0; 4715 } 4716 4717 error = vn_extattr_set(vp, IO_NODELOCKED, 4718 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", 4719 sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p); 4720 if (error == 0) 4721 error = vn_extattr_set(vp, IO_NODELOCKED, 4722 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", 4723 sizeof(dsattr), (char *)&dsattr, p); 4724 if (error != 0) 4725 printf("pNFS: pnfscreate setextattr=%d\n", 4726 error); 4727 } else 4728 printf("pNFS: pnfscreate=%d\n", error); 4729 free(pf, M_TEMP); 4730 free(dsc, M_TEMP); 4731 } 4732 4733 /* 4734 * Get the information needed to remove the pNFS Data Server file from the 4735 * Metadata file. Upon success, ddvp is set non-NULL to the locked 4736 * DS directory vnode. The caller must unlock *ddvp when done with it. 4737 */ 4738 static void 4739 nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp, 4740 int *mirrorcntp, char *fname, fhandle_t *fhp) 4741 { 4742 struct vattr va; 4743 struct ucred *tcred; 4744 char *buf; 4745 int buflen, error; 4746 4747 dvpp[0] = NULL; 4748 /* If not an exported regular file or not a pNFS server, just return. */ 4749 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 4750 nfsrv_devidcnt == 0) 4751 return; 4752 4753 /* Check to see if this is the last hard link. */ 4754 tcred = newnfs_getcred(); 4755 error = VOP_GETATTR(vp, &va, tcred); 4756 NFSFREECRED(tcred); 4757 if (error != 0) { 4758 printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error); 4759 return; 4760 } 4761 if (va.va_nlink > 1) 4762 return; 4763 4764 error = nfsvno_getfh(vp, fhp, p); 4765 if (error != 0) { 4766 printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error); 4767 return; 4768 } 4769 4770 buflen = 1024; 4771 buf = malloc(buflen, M_TEMP, M_WAITOK); 4772 /* Get the directory vnode for the DS mount and the file handle. */ 4773 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp, 4774 NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL); 4775 free(buf, M_TEMP); 4776 if (error != 0) 4777 printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error); 4778 } 4779 4780 /* 4781 * Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror. 4782 * The arguments are in a structure, so that they can be passed through 4783 * taskqueue for a kernel process to execute this function. 4784 */ 4785 struct nfsrvdsremove { 4786 int done; 4787 int inprog; 4788 struct task tsk; 4789 struct ucred *tcred; 4790 struct vnode *dvp; 4791 NFSPROC_T *p; 4792 int err; 4793 char fname[PNFS_FILENAME_LEN + 1]; 4794 }; 4795 4796 static int 4797 nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred, 4798 NFSPROC_T *p) 4799 { 4800 struct nameidata named; 4801 struct vnode *nvp; 4802 char *bufp; 4803 u_long *hashp; 4804 int error; 4805 4806 error = NFSVOPLOCK(dvp, LK_EXCLUSIVE); 4807 if (error != 0) 4808 return (error); 4809 named.ni_cnd.cn_nameiop = DELETE; 4810 named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 4811 named.ni_cnd.cn_cred = tcred; 4812 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 4813 nfsvno_setpathbuf(&named, &bufp, &hashp); 4814 named.ni_cnd.cn_nameptr = bufp; 4815 named.ni_cnd.cn_namelen = strlen(fname); 4816 strlcpy(bufp, fname, NAME_MAX); 4817 NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp); 4818 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 4819 NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error); 4820 if (error == 0) { 4821 error = VOP_REMOVE(dvp, nvp, &named.ni_cnd); 4822 vput(nvp); 4823 } 4824 NFSVOPUNLOCK(dvp); 4825 nfsvno_relpathbuf(&named); 4826 if (error != 0) 4827 printf("pNFS: nfsrv_pnfsremove failed=%d\n", error); 4828 return (error); 4829 } 4830 4831 /* 4832 * Start up the thread that will execute nfsrv_dsremove(). 4833 */ 4834 static void 4835 start_dsremove(void *arg, int pending) 4836 { 4837 struct nfsrvdsremove *dsrm; 4838 4839 dsrm = (struct nfsrvdsremove *)arg; 4840 dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred, 4841 dsrm->p); 4842 dsrm->done = 1; 4843 NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err); 4844 } 4845 4846 /* 4847 * Remove a pNFS data file from a Data Server. 4848 * nfsrv_pnfsremovesetup() must have been called before the MDS file was 4849 * removed to set up the dvp and fill in the FH. 4850 */ 4851 static void 4852 nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp, 4853 NFSPROC_T *p) 4854 { 4855 struct ucred *tcred; 4856 struct nfsrvdsremove *dsrm, *tdsrm; 4857 struct nfsdevice *ds; 4858 struct nfsmount *nmp; 4859 int failpos, i, ret, timo; 4860 4861 tcred = newnfs_getcred(); 4862 dsrm = NULL; 4863 if (mirrorcnt > 1) 4864 dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK); 4865 /* 4866 * Remove the file on each DS mirror, using kernel process(es) for the 4867 * additional mirrors. 4868 */ 4869 failpos = -1; 4870 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4871 tdsrm->tcred = tcred; 4872 tdsrm->p = p; 4873 tdsrm->dvp = dvp[i]; 4874 strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1); 4875 tdsrm->inprog = 0; 4876 tdsrm->done = 0; 4877 tdsrm->err = 0; 4878 ret = EIO; 4879 if (nfs_pnfsiothreads != 0) { 4880 ret = nfs_pnfsio(start_dsremove, tdsrm); 4881 NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret); 4882 } 4883 if (ret != 0) { 4884 ret = nfsrv_dsremove(dvp[i], fname, tcred, p); 4885 if (failpos == -1 && nfsds_failerr(ret)) 4886 failpos = i; 4887 } 4888 } 4889 ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p); 4890 if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret)) 4891 failpos = mirrorcnt - 1; 4892 timo = hz / 50; /* Wait for 20msec. */ 4893 if (timo < 1) 4894 timo = 1; 4895 /* Wait for kernel task(s) to complete. */ 4896 for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) { 4897 while (tdsrm->inprog != 0 && tdsrm->done == 0) 4898 tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo); 4899 if (failpos == -1 && nfsds_failerr(tdsrm->err)) 4900 failpos = i; 4901 } 4902 4903 /* 4904 * If failpos has been set, that mirror has failed, so it needs 4905 * to be disabled. 4906 */ 4907 if (failpos >= 0) { 4908 nmp = VFSTONFS(dvp[failpos]->v_mount); 4909 NFSLOCKMNT(nmp); 4910 if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM | 4911 NFSMNTP_CANCELRPCS)) == 0) { 4912 nmp->nm_privflag |= NFSMNTP_CANCELRPCS; 4913 NFSUNLOCKMNT(nmp); 4914 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p); 4915 NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos, 4916 ds); 4917 if (ds != NULL) 4918 nfsrv_killrpcs(nmp); 4919 NFSLOCKMNT(nmp); 4920 nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 4921 wakeup(nmp); 4922 } 4923 NFSUNLOCKMNT(nmp); 4924 } 4925 4926 /* Get rid all layouts for the file. */ 4927 nfsrv_freefilelayouts(fhp); 4928 4929 NFSFREECRED(tcred); 4930 free(dsrm, M_TEMP); 4931 } 4932 4933 /* 4934 * Generate a file name based on the file handle and put it in *bufp. 4935 * Return the number of bytes generated. 4936 */ 4937 static int 4938 nfsrv_putfhname(fhandle_t *fhp, char *bufp) 4939 { 4940 int i; 4941 uint8_t *cp; 4942 const uint8_t *hexdigits = "0123456789abcdef"; 4943 4944 cp = (uint8_t *)fhp; 4945 for (i = 0; i < sizeof(*fhp); i++) { 4946 bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf]; 4947 bufp[2 * i + 1] = hexdigits[*cp++ & 0xf]; 4948 } 4949 bufp[2 * i] = '\0'; 4950 return (2 * i); 4951 } 4952 4953 /* 4954 * Update the Metadata file's attributes from the DS file when a Read/Write 4955 * layout is returned. 4956 * Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN 4957 * so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file. 4958 */ 4959 int 4960 nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 4961 { 4962 struct ucred *tcred; 4963 int error; 4964 4965 /* Do this as root so that it won't fail with EACCES. */ 4966 tcred = newnfs_getcred(); 4967 error = nfsrv_proxyds(vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN, 4968 NULL, NULL, NULL, nap, NULL, NULL, 0, NULL); 4969 NFSFREECRED(tcred); 4970 return (error); 4971 } 4972 4973 /* 4974 * Set the NFSv4 ACL on the DS file to the same ACL as the MDS file. 4975 */ 4976 static int 4977 nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred, 4978 NFSPROC_T *p) 4979 { 4980 int error; 4981 4982 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SETACL, 4983 NULL, NULL, NULL, NULL, aclp, NULL, 0, NULL); 4984 return (error); 4985 } 4986 4987 static int 4988 nfsrv_proxyds(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 4989 struct thread *p, int ioproc, struct mbuf **mpp, char *cp, 4990 struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp, 4991 off_t *offp, int content, bool *eofp) 4992 { 4993 struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp; 4994 fhandle_t fh[NFSDEV_MAXMIRRORS]; 4995 struct vnode *dvp[NFSDEV_MAXMIRRORS]; 4996 struct nfsdevice *ds; 4997 struct pnfsdsattr dsattr; 4998 struct opnfsdsattr odsattr; 4999 char *buf; 5000 int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt; 5001 5002 NFSD_DEBUG(4, "in nfsrv_proxyds\n"); 5003 /* 5004 * If not a regular file, not exported or not a pNFS server, 5005 * just return ENOENT. 5006 */ 5007 if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 || 5008 nfsrv_devidcnt == 0) 5009 return (ENOENT); 5010 5011 buflen = 1024; 5012 buf = malloc(buflen, M_TEMP, M_WAITOK); 5013 error = 0; 5014 5015 /* 5016 * For Getattr, get the Change attribute (va_filerev) and size (va_size) 5017 * from the MetaData file's extended attribute. 5018 */ 5019 if (ioproc == NFSPROC_GETATTR) { 5020 error = vn_extattr_get(vp, IO_NODELOCKED, 5021 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf, 5022 p); 5023 if (error == 0) { 5024 if (buflen == sizeof(odsattr)) { 5025 NFSBCOPY(buf, &odsattr, buflen); 5026 nap->na_filerev = odsattr.dsa_filerev; 5027 nap->na_size = odsattr.dsa_size; 5028 nap->na_atime = odsattr.dsa_atime; 5029 nap->na_mtime = odsattr.dsa_mtime; 5030 /* 5031 * Fake na_bytes by rounding up na_size. 5032 * Since we don't know the block size, just 5033 * use BLKDEV_IOSIZE. 5034 */ 5035 nap->na_bytes = (odsattr.dsa_size + 5036 BLKDEV_IOSIZE - 1) & ~(BLKDEV_IOSIZE - 1); 5037 } else if (buflen == sizeof(dsattr)) { 5038 NFSBCOPY(buf, &dsattr, buflen); 5039 nap->na_filerev = dsattr.dsa_filerev; 5040 nap->na_size = dsattr.dsa_size; 5041 nap->na_atime = dsattr.dsa_atime; 5042 nap->na_mtime = dsattr.dsa_mtime; 5043 nap->na_bytes = dsattr.dsa_bytes; 5044 } else 5045 error = ENXIO; 5046 } 5047 if (error == 0) { 5048 /* 5049 * If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr() 5050 * returns 0, just return now. nfsrv_checkdsattr() 5051 * returns 0 if there is no Read/Write layout 5052 * plus either an Open/Write_access or Write 5053 * delegation issued to a client for the file. 5054 */ 5055 if (nfsrv_pnfsgetdsattr == 0 || 5056 nfsrv_checkdsattr(vp, p) == 0) { 5057 free(buf, M_TEMP); 5058 return (error); 5059 } 5060 } 5061 5062 /* 5063 * Clear ENOATTR so the code below will attempt to do a 5064 * nfsrv_getattrdsrpc() to get the attributes and (re)create 5065 * the extended attribute. 5066 */ 5067 if (error == ENOATTR) 5068 error = 0; 5069 } 5070 5071 origmircnt = -1; 5072 trycnt = 0; 5073 tryagain: 5074 if (error == 0) { 5075 buflen = 1024; 5076 if (ioproc == NFSPROC_READDS && NFSVOPISLOCKED(vp) == 5077 LK_EXCLUSIVE) 5078 printf("nfsrv_proxyds: Readds vp exclusively locked\n"); 5079 error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen, 5080 &mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL, 5081 NULL, NULL); 5082 if (error == 0) { 5083 for (i = 0; i < mirrorcnt; i++) 5084 nmp[i] = VFSTONFS(dvp[i]->v_mount); 5085 } else 5086 printf("pNFS: proxy getextattr sockaddr=%d\n", error); 5087 } else 5088 printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error); 5089 if (error == 0) { 5090 failpos = -1; 5091 if (origmircnt == -1) 5092 origmircnt = mirrorcnt; 5093 /* 5094 * If failpos is set to a mirror#, then that mirror has 5095 * failed and will be disabled. For Read, Getattr and Seek, the 5096 * function only tries one mirror, so if that mirror has 5097 * failed, it will need to be retried. As such, increment 5098 * tryitagain for these cases. 5099 * For Write, Setattr and Setacl, the function tries all 5100 * mirrors and will not return an error for the case where 5101 * one mirror has failed. For these cases, the functioning 5102 * mirror(s) will have been modified, so a retry isn't 5103 * necessary. These functions will set failpos for the 5104 * failed mirror#. 5105 */ 5106 if (ioproc == NFSPROC_READDS) { 5107 error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0], 5108 mpp, mpp2); 5109 if (nfsds_failerr(error) && mirrorcnt > 1) { 5110 /* 5111 * Setting failpos will cause the mirror 5112 * to be disabled and then a retry of this 5113 * read is required. 5114 */ 5115 failpos = 0; 5116 error = 0; 5117 trycnt++; 5118 } 5119 } else if (ioproc == NFSPROC_WRITEDS) 5120 error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp, 5121 &nmp[0], mirrorcnt, mpp, cp, &failpos); 5122 else if (ioproc == NFSPROC_SETATTR) 5123 error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0], 5124 mirrorcnt, nap, &failpos); 5125 else if (ioproc == NFSPROC_SETACL) 5126 error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0], 5127 mirrorcnt, aclp, &failpos); 5128 else if (ioproc == NFSPROC_SEEKDS) { 5129 error = nfsrv_seekdsrpc(fh, offp, content, eofp, cred, 5130 p, nmp[0]); 5131 if (nfsds_failerr(error) && mirrorcnt > 1) { 5132 /* 5133 * Setting failpos will cause the mirror 5134 * to be disabled and then a retry of this 5135 * read is required. 5136 */ 5137 failpos = 0; 5138 error = 0; 5139 trycnt++; 5140 } 5141 } else if (ioproc == NFSPROC_ALLOCATE) 5142 error = nfsrv_allocatedsrpc(fh, off, *offp, cred, p, vp, 5143 &nmp[0], mirrorcnt, &failpos); 5144 else if (ioproc == NFSPROC_DEALLOCATE) 5145 error = nfsrv_deallocatedsrpc(fh, off, *offp, cred, p, 5146 vp, &nmp[0], mirrorcnt, &failpos); 5147 else { 5148 error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p, 5149 vp, nmp[mirrorcnt - 1], nap); 5150 if (nfsds_failerr(error) && mirrorcnt > 1) { 5151 /* 5152 * Setting failpos will cause the mirror 5153 * to be disabled and then a retry of this 5154 * getattr is required. 5155 */ 5156 failpos = mirrorcnt - 1; 5157 error = 0; 5158 trycnt++; 5159 } 5160 } 5161 ds = NULL; 5162 if (failpos >= 0) { 5163 failnmp = nmp[failpos]; 5164 NFSLOCKMNT(failnmp); 5165 if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM | 5166 NFSMNTP_CANCELRPCS)) == 0) { 5167 failnmp->nm_privflag |= NFSMNTP_CANCELRPCS; 5168 NFSUNLOCKMNT(failnmp); 5169 ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, 5170 failnmp, p); 5171 NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n", 5172 failpos, ds); 5173 if (ds != NULL) 5174 nfsrv_killrpcs(failnmp); 5175 NFSLOCKMNT(failnmp); 5176 failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS; 5177 wakeup(failnmp); 5178 } 5179 NFSUNLOCKMNT(failnmp); 5180 } 5181 for (i = 0; i < mirrorcnt; i++) 5182 NFSVOPUNLOCK(dvp[i]); 5183 NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error, 5184 trycnt); 5185 /* Try the Read/Getattr again if a mirror was deleted. */ 5186 if (ds != NULL && trycnt > 0 && trycnt < origmircnt) 5187 goto tryagain; 5188 } else { 5189 /* Return ENOENT for any Extended Attribute error. */ 5190 error = ENOENT; 5191 } 5192 free(buf, M_TEMP); 5193 NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error); 5194 return (error); 5195 } 5196 5197 /* 5198 * Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended 5199 * attribute. 5200 * newnmpp - If it points to a non-NULL nmp, that is the destination and needs 5201 * to be checked. If it points to a NULL nmp, then it returns 5202 * a suitable destination. 5203 * curnmp - If non-NULL, it is the source mount for the copy. 5204 */ 5205 int 5206 nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp, 5207 int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp, 5208 char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp, 5209 struct nfsmount *curnmp, int *ippos, int *dsdirp) 5210 { 5211 struct vnode *dvp, *nvp = NULL, **tdvpp; 5212 struct mount *mp; 5213 struct nfsmount *nmp, *newnmp; 5214 struct sockaddr *sad; 5215 struct sockaddr_in *sin; 5216 struct nfsdevice *ds, *tds, *fndds; 5217 struct pnfsdsfile *pf; 5218 uint32_t dsdir; 5219 int error, fhiszero, fnd, gotone, i, mirrorcnt; 5220 5221 ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp"); 5222 *mirrorcntp = 1; 5223 tdvpp = dvpp; 5224 if (nvpp != NULL) 5225 *nvpp = NULL; 5226 if (dvpp != NULL) 5227 *dvpp = NULL; 5228 if (ippos != NULL) 5229 *ippos = -1; 5230 if (newnmpp != NULL) 5231 newnmp = *newnmpp; 5232 else 5233 newnmp = NULL; 5234 mp = vp->v_mount; 5235 error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5236 "pnfsd.dsfile", buflenp, buf, p); 5237 mirrorcnt = *buflenp / sizeof(*pf); 5238 if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS || 5239 *buflenp != sizeof(*pf) * mirrorcnt)) 5240 error = ENOATTR; 5241 5242 pf = (struct pnfsdsfile *)buf; 5243 /* If curnmp != NULL, check for a match in the mirror list. */ 5244 if (curnmp != NULL && error == 0) { 5245 fnd = 0; 5246 for (i = 0; i < mirrorcnt; i++, pf++) { 5247 sad = (struct sockaddr *)&pf->dsf_sin; 5248 if (nfsaddr2_match(sad, curnmp->nm_nam)) { 5249 if (ippos != NULL) 5250 *ippos = i; 5251 fnd = 1; 5252 break; 5253 } 5254 } 5255 if (fnd == 0) 5256 error = ENXIO; 5257 } 5258 5259 gotone = 0; 5260 pf = (struct pnfsdsfile *)buf; 5261 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt, 5262 error); 5263 for (i = 0; i < mirrorcnt && error == 0; i++, pf++) { 5264 fhiszero = 0; 5265 sad = (struct sockaddr *)&pf->dsf_sin; 5266 sin = &pf->dsf_sin; 5267 dsdir = pf->dsf_dir; 5268 if (dsdir >= nfsrv_dsdirsize) { 5269 printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir); 5270 error = ENOATTR; 5271 } else if (nvpp != NULL && newnmp != NULL && 5272 nfsaddr2_match(sad, newnmp->nm_nam)) 5273 error = EEXIST; 5274 if (error == 0) { 5275 if (ippos != NULL && curnmp == NULL && 5276 sad->sa_family == AF_INET && 5277 sin->sin_addr.s_addr == 0) 5278 *ippos = i; 5279 if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0) 5280 fhiszero = 1; 5281 /* Use the socket address to find the mount point. */ 5282 fndds = NULL; 5283 NFSDDSLOCK(); 5284 /* Find a match for the IP address. */ 5285 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 5286 if (ds->nfsdev_nmp != NULL) { 5287 dvp = ds->nfsdev_dvp; 5288 nmp = VFSTONFS(dvp->v_mount); 5289 if (nmp != ds->nfsdev_nmp) 5290 printf("different2 nmp %p %p\n", 5291 nmp, ds->nfsdev_nmp); 5292 if (nfsaddr2_match(sad, nmp->nm_nam)) { 5293 fndds = ds; 5294 break; 5295 } 5296 } 5297 } 5298 if (fndds != NULL && newnmpp != NULL && 5299 newnmp == NULL) { 5300 /* Search for a place to make a mirror copy. */ 5301 TAILQ_FOREACH(tds, &nfsrv_devidhead, 5302 nfsdev_list) { 5303 if (tds->nfsdev_nmp != NULL && 5304 fndds != tds && 5305 ((tds->nfsdev_mdsisset == 0 && 5306 fndds->nfsdev_mdsisset == 0) || 5307 (tds->nfsdev_mdsisset != 0 && 5308 fndds->nfsdev_mdsisset != 0 && 5309 fsidcmp(&tds->nfsdev_mdsfsid, 5310 &mp->mnt_stat.f_fsid) == 0))) { 5311 *newnmpp = tds->nfsdev_nmp; 5312 break; 5313 } 5314 } 5315 if (tds != NULL) { 5316 /* 5317 * Move this entry to the end of the 5318 * list, so it won't be selected as 5319 * easily the next time. 5320 */ 5321 TAILQ_REMOVE(&nfsrv_devidhead, tds, 5322 nfsdev_list); 5323 TAILQ_INSERT_TAIL(&nfsrv_devidhead, tds, 5324 nfsdev_list); 5325 } 5326 } 5327 NFSDDSUNLOCK(); 5328 if (fndds != NULL) { 5329 dvp = fndds->nfsdev_dsdir[dsdir]; 5330 if (lktype != 0 || fhiszero != 0 || 5331 (nvpp != NULL && *nvpp == NULL)) { 5332 if (fhiszero != 0) 5333 error = vn_lock(dvp, 5334 LK_EXCLUSIVE); 5335 else if (lktype != 0) 5336 error = vn_lock(dvp, lktype); 5337 else 5338 error = vn_lock(dvp, LK_SHARED); 5339 /* 5340 * If the file handle is all 0's, try to 5341 * do a Lookup against the DS to acquire 5342 * it. 5343 * If dvpp == NULL or the Lookup fails, 5344 * unlock dvp after the call. 5345 */ 5346 if (error == 0 && (fhiszero != 0 || 5347 (nvpp != NULL && *nvpp == NULL))) { 5348 error = nfsrv_pnfslookupds(vp, 5349 dvp, pf, &nvp, p); 5350 if (error == 0) { 5351 if (fhiszero != 0) 5352 nfsrv_pnfssetfh( 5353 vp, pf, 5354 devid, 5355 fnamep, 5356 nvp, p); 5357 if (nvpp != NULL && 5358 *nvpp == NULL) { 5359 *nvpp = nvp; 5360 *dsdirp = dsdir; 5361 } else 5362 vput(nvp); 5363 } 5364 if (error != 0 || lktype == 0) 5365 NFSVOPUNLOCK(dvp); 5366 } 5367 } 5368 if (error == 0) { 5369 gotone++; 5370 NFSD_DEBUG(4, "gotone=%d\n", gotone); 5371 if (devid != NULL) { 5372 NFSBCOPY(fndds->nfsdev_deviceid, 5373 devid, NFSX_V4DEVICEID); 5374 devid += NFSX_V4DEVICEID; 5375 } 5376 if (dvpp != NULL) 5377 *tdvpp++ = dvp; 5378 if (fhp != NULL) 5379 NFSBCOPY(&pf->dsf_fh, fhp++, 5380 NFSX_MYFH); 5381 if (fnamep != NULL && gotone == 1) 5382 strlcpy(fnamep, 5383 pf->dsf_filename, 5384 sizeof(pf->dsf_filename)); 5385 } else 5386 NFSD_DEBUG(4, "nfsrv_dsgetsockmnt " 5387 "err=%d\n", error); 5388 } 5389 } 5390 } 5391 if (error == 0 && gotone == 0) 5392 error = ENOENT; 5393 5394 NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone, 5395 error); 5396 if (error == 0) 5397 *mirrorcntp = gotone; 5398 else { 5399 if (gotone > 0 && dvpp != NULL) { 5400 /* 5401 * If the error didn't occur on the first one and 5402 * dvpp != NULL, the one(s) prior to the failure will 5403 * have locked dvp's that need to be unlocked. 5404 */ 5405 for (i = 0; i < gotone; i++) { 5406 NFSVOPUNLOCK(*dvpp); 5407 *dvpp++ = NULL; 5408 } 5409 } 5410 /* 5411 * If it found the vnode to be copied from before a failure, 5412 * it needs to be vput()'d. 5413 */ 5414 if (nvpp != NULL && *nvpp != NULL) { 5415 vput(*nvpp); 5416 *nvpp = NULL; 5417 } 5418 } 5419 return (error); 5420 } 5421 5422 /* 5423 * Set the extended attribute for the Change attribute. 5424 */ 5425 static int 5426 nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p) 5427 { 5428 struct pnfsdsattr dsattr; 5429 int error; 5430 5431 ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp"); 5432 dsattr.dsa_filerev = nap->na_filerev; 5433 dsattr.dsa_size = nap->na_size; 5434 dsattr.dsa_atime = nap->na_atime; 5435 dsattr.dsa_mtime = nap->na_mtime; 5436 dsattr.dsa_bytes = nap->na_bytes; 5437 error = vn_extattr_set(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM, 5438 "pnfsd.dsattr", sizeof(dsattr), (char *)&dsattr, p); 5439 if (error != 0) 5440 printf("pNFS: setextattr=%d\n", error); 5441 return (error); 5442 } 5443 5444 static int 5445 nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5446 NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp) 5447 { 5448 uint32_t *tl; 5449 struct nfsrv_descript *nd; 5450 nfsv4stateid_t st; 5451 struct mbuf *m, *m2; 5452 int error = 0, retlen, tlen, trimlen; 5453 5454 NFSD_DEBUG(4, "in nfsrv_readdsrpc\n"); 5455 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5456 *mpp = NULL; 5457 /* 5458 * Use a stateid where other is an alternating 01010 pattern and 5459 * seqid is 0xffffffff. This value is not defined as special by 5460 * the RFC and is used by the FreeBSD NFS server to indicate an 5461 * MDS->DS proxy operation. 5462 */ 5463 st.other[0] = 0x55555555; 5464 st.other[1] = 0x55555555; 5465 st.other[2] = 0x55555555; 5466 st.seqid = 0xffffffff; 5467 nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp), 5468 NULL, NULL, 0, 0, cred); 5469 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5470 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5471 txdr_hyper(off, tl); 5472 *(tl + 2) = txdr_unsigned(len); 5473 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5474 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5475 if (error != 0) { 5476 free(nd, M_TEMP); 5477 return (error); 5478 } 5479 if (nd->nd_repstat == 0) { 5480 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 5481 NFSM_STRSIZ(retlen, len); 5482 if (retlen > 0) { 5483 /* Trim off the pre-data XDR from the mbuf chain. */ 5484 m = nd->nd_mrep; 5485 while (m != NULL && m != nd->nd_md) { 5486 if (m->m_next == nd->nd_md) { 5487 m->m_next = NULL; 5488 m_freem(nd->nd_mrep); 5489 nd->nd_mrep = m = nd->nd_md; 5490 } else 5491 m = m->m_next; 5492 } 5493 if (m == NULL) { 5494 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5495 error = ENOENT; 5496 goto nfsmout; 5497 } 5498 5499 /* 5500 * Now, adjust first mbuf so that any XDR before the 5501 * read data is skipped over. 5502 */ 5503 trimlen = nd->nd_dpos - mtod(m, char *); 5504 if (trimlen > 0) { 5505 m->m_len -= trimlen; 5506 NFSM_DATAP(m, trimlen); 5507 } 5508 5509 /* 5510 * Truncate the mbuf chain at retlen bytes of data, 5511 * plus XDR padding that brings the length up to a 5512 * multiple of 4. 5513 */ 5514 tlen = NFSM_RNDUP(retlen); 5515 do { 5516 if (m->m_len >= tlen) { 5517 m->m_len = tlen; 5518 tlen = 0; 5519 m2 = m->m_next; 5520 m->m_next = NULL; 5521 m_freem(m2); 5522 break; 5523 } 5524 tlen -= m->m_len; 5525 m = m->m_next; 5526 } while (m != NULL); 5527 if (tlen > 0) { 5528 printf("nfsrv_readdsrpc: busted mbuf list\n"); 5529 error = ENOENT; 5530 goto nfsmout; 5531 } 5532 *mpp = nd->nd_mrep; 5533 *mpendp = m; 5534 nd->nd_mrep = NULL; 5535 } 5536 } else 5537 error = nd->nd_repstat; 5538 nfsmout: 5539 /* If nd->nd_mrep is already NULL, this is a no-op. */ 5540 m_freem(nd->nd_mrep); 5541 free(nd, M_TEMP); 5542 NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error); 5543 return (error); 5544 } 5545 5546 /* 5547 * Do a write RPC on a DS data file, using this structure for the arguments, 5548 * so that this function can be executed by a separate kernel process. 5549 */ 5550 struct nfsrvwritedsdorpc { 5551 int done; 5552 int inprog; 5553 struct task tsk; 5554 fhandle_t fh; 5555 off_t off; 5556 int len; 5557 struct nfsmount *nmp; 5558 struct ucred *cred; 5559 NFSPROC_T *p; 5560 struct mbuf *m; 5561 int err; 5562 }; 5563 5564 static int 5565 nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len, 5566 struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p) 5567 { 5568 uint32_t *tl; 5569 struct nfsrv_descript *nd; 5570 nfsattrbit_t attrbits; 5571 nfsv4stateid_t st; 5572 int commit, error, retlen; 5573 5574 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5575 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp, 5576 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5577 5578 /* 5579 * Use a stateid where other is an alternating 01010 pattern and 5580 * seqid is 0xffffffff. This value is not defined as special by 5581 * the RFC and is used by the FreeBSD NFS server to indicate an 5582 * MDS->DS proxy operation. 5583 */ 5584 st.other[0] = 0x55555555; 5585 st.other[1] = 0x55555555; 5586 st.other[2] = 0x55555555; 5587 st.seqid = 0xffffffff; 5588 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5589 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5590 txdr_hyper(off, tl); 5591 tl += 2; 5592 /* 5593 * Do all writes FileSync, since the server doesn't hold onto dirty 5594 * buffers. Since clients should be accessing the DS servers directly 5595 * using the pNFS layouts, this just needs to work correctly as a 5596 * fallback. 5597 */ 5598 *tl++ = txdr_unsigned(NFSWRITE_FILESYNC); 5599 *tl = txdr_unsigned(len); 5600 NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len); 5601 5602 /* Put data in mbuf chain. */ 5603 nd->nd_mb->m_next = m; 5604 5605 /* Set nd_mb and nd_bpos to end of data. */ 5606 while (m->m_next != NULL) 5607 m = m->m_next; 5608 nd->nd_mb = m; 5609 nfsm_set(nd, m->m_len); 5610 NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len); 5611 5612 /* Do a Getattr for the attributes that change upon writing. */ 5613 NFSZERO_ATTRBIT(&attrbits); 5614 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5615 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5616 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5617 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5618 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5619 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 5620 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5621 (void) nfsrv_putattrbit(nd, &attrbits); 5622 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5623 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5624 if (error != 0) { 5625 free(nd, M_TEMP); 5626 return (error); 5627 } 5628 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat); 5629 /* Get rid of weak cache consistency data for now. */ 5630 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5631 (ND_NFSV4 | ND_V4WCCATTR)) { 5632 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5633 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 5634 NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error); 5635 if (error != 0) 5636 goto nfsmout; 5637 /* 5638 * Get rid of Op# and status for next op. 5639 */ 5640 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5641 if (*++tl != 0) 5642 nd->nd_flag |= ND_NOMOREDATA; 5643 } 5644 if (nd->nd_repstat == 0) { 5645 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5646 retlen = fxdr_unsigned(int, *tl++); 5647 commit = fxdr_unsigned(int, *tl); 5648 if (commit != NFSWRITE_FILESYNC) 5649 error = NFSERR_IO; 5650 NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n", 5651 retlen, commit, error); 5652 } else 5653 error = nd->nd_repstat; 5654 /* We have no use for the Write Verifier since we use FileSync. */ 5655 5656 /* 5657 * Get the Change, Size, Access Time and Modify Time attributes and set 5658 * on the Metadata file, so its attributes will be what the file's 5659 * would be if it had been written. 5660 */ 5661 if (error == 0) { 5662 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5663 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5664 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 5665 } 5666 NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error); 5667 nfsmout: 5668 m_freem(nd->nd_mrep); 5669 free(nd, M_TEMP); 5670 NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error); 5671 return (error); 5672 } 5673 5674 /* 5675 * Start up the thread that will execute nfsrv_writedsdorpc(). 5676 */ 5677 static void 5678 start_writedsdorpc(void *arg, int pending) 5679 { 5680 struct nfsrvwritedsdorpc *drpc; 5681 5682 drpc = (struct nfsrvwritedsdorpc *)arg; 5683 drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5684 drpc->len, NULL, drpc->m, drpc->cred, drpc->p); 5685 drpc->done = 1; 5686 NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err); 5687 } 5688 5689 static int 5690 nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred, 5691 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5692 struct mbuf **mpp, char *cp, int *failposp) 5693 { 5694 struct nfsrvwritedsdorpc *drpc, *tdrpc = NULL; 5695 struct nfsvattr na; 5696 struct mbuf *m; 5697 int error, i, offs, ret, timo; 5698 5699 NFSD_DEBUG(4, "in nfsrv_writedsrpc\n"); 5700 KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain")); 5701 drpc = NULL; 5702 if (mirrorcnt > 1) 5703 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5704 M_WAITOK); 5705 5706 /* Calculate offset in mbuf chain that data starts. */ 5707 offs = cp - mtod(*mpp, char *); 5708 NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len); 5709 5710 /* 5711 * Do the write RPC for every DS, using a separate kernel process 5712 * for every DS except the last one. 5713 */ 5714 error = 0; 5715 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5716 tdrpc->done = 0; 5717 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5718 tdrpc->off = off; 5719 tdrpc->len = len; 5720 tdrpc->nmp = *nmpp; 5721 tdrpc->cred = cred; 5722 tdrpc->p = p; 5723 tdrpc->inprog = 0; 5724 tdrpc->err = 0; 5725 tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5726 ret = EIO; 5727 if (nfs_pnfsiothreads != 0) { 5728 ret = nfs_pnfsio(start_writedsdorpc, tdrpc); 5729 NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n", 5730 ret); 5731 } 5732 if (ret != 0) { 5733 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL, 5734 tdrpc->m, cred, p); 5735 if (nfsds_failerr(ret) && *failposp == -1) 5736 *failposp = i; 5737 else if (error == 0 && ret != 0) 5738 error = ret; 5739 } 5740 nmpp++; 5741 fhp++; 5742 } 5743 m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK); 5744 ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p); 5745 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5746 *failposp = mirrorcnt - 1; 5747 else if (error == 0 && ret != 0) 5748 error = ret; 5749 if (error == 0) 5750 error = nfsrv_setextattr(vp, &na, p); 5751 NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error); 5752 tdrpc = drpc; 5753 timo = hz / 50; /* Wait for 20msec. */ 5754 if (timo < 1) 5755 timo = 1; 5756 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5757 /* Wait for RPCs on separate threads to complete. */ 5758 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5759 tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo); 5760 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5761 *failposp = i; 5762 else if (error == 0 && tdrpc->err != 0) 5763 error = tdrpc->err; 5764 } 5765 free(drpc, M_TEMP); 5766 return (error); 5767 } 5768 5769 /* 5770 * Do a allocate RPC on a DS data file, using this structure for the arguments, 5771 * so that this function can be executed by a separate kernel process. 5772 */ 5773 struct nfsrvallocatedsdorpc { 5774 int done; 5775 int inprog; 5776 struct task tsk; 5777 fhandle_t fh; 5778 off_t off; 5779 off_t len; 5780 struct nfsmount *nmp; 5781 struct ucred *cred; 5782 NFSPROC_T *p; 5783 int err; 5784 }; 5785 5786 static int 5787 nfsrv_allocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5788 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5789 { 5790 uint32_t *tl; 5791 struct nfsrv_descript *nd; 5792 nfsattrbit_t attrbits; 5793 nfsv4stateid_t st; 5794 int error; 5795 5796 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5797 nfscl_reqstart(nd, NFSPROC_ALLOCATE, nmp, (u_int8_t *)fhp, 5798 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5799 5800 /* 5801 * Use a stateid where other is an alternating 01010 pattern and 5802 * seqid is 0xffffffff. This value is not defined as special by 5803 * the RFC and is used by the FreeBSD NFS server to indicate an 5804 * MDS->DS proxy operation. 5805 */ 5806 st.other[0] = 0x55555555; 5807 st.other[1] = 0x55555555; 5808 st.other[2] = 0x55555555; 5809 st.seqid = 0xffffffff; 5810 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5811 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5812 txdr_hyper(off, tl); tl += 2; 5813 txdr_hyper(len, tl); tl += 2; 5814 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: len=%jd\n", (intmax_t)len); 5815 5816 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5817 NFSGETATTR_ATTRBIT(&attrbits); 5818 nfsrv_putattrbit(nd, &attrbits); 5819 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5820 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5821 if (error != 0) { 5822 free(nd, M_TEMP); 5823 return (error); 5824 } 5825 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft allocaterpc=%d\n", 5826 nd->nd_repstat); 5827 if (nd->nd_repstat == 0) { 5828 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5829 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5830 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 5831 } else 5832 error = nd->nd_repstat; 5833 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc: aft loadattr=%d\n", error); 5834 nfsmout: 5835 m_freem(nd->nd_mrep); 5836 free(nd, M_TEMP); 5837 NFSD_DEBUG(4, "nfsrv_allocatedsdorpc error=%d\n", error); 5838 return (error); 5839 } 5840 5841 /* 5842 * Start up the thread that will execute nfsrv_allocatedsdorpc(). 5843 */ 5844 static void 5845 start_allocatedsdorpc(void *arg, int pending) 5846 { 5847 struct nfsrvallocatedsdorpc *drpc; 5848 5849 drpc = (struct nfsrvallocatedsdorpc *)arg; 5850 drpc->err = nfsrv_allocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 5851 drpc->len, NULL, drpc->cred, drpc->p); 5852 drpc->done = 1; 5853 NFSD_DEBUG(4, "start_allocatedsdorpc: err=%d\n", drpc->err); 5854 } 5855 5856 static int 5857 nfsrv_allocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 5858 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 5859 int *failposp) 5860 { 5861 struct nfsrvallocatedsdorpc *drpc, *tdrpc = NULL; 5862 struct nfsvattr na; 5863 int error, i, ret, timo; 5864 5865 NFSD_DEBUG(4, "in nfsrv_allocatedsrpc\n"); 5866 drpc = NULL; 5867 if (mirrorcnt > 1) 5868 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 5869 M_WAITOK); 5870 5871 /* 5872 * Do the allocate RPC for every DS, using a separate kernel process 5873 * for every DS except the last one. 5874 */ 5875 error = 0; 5876 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5877 tdrpc->done = 0; 5878 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 5879 tdrpc->off = off; 5880 tdrpc->len = len; 5881 tdrpc->nmp = *nmpp; 5882 tdrpc->cred = cred; 5883 tdrpc->p = p; 5884 tdrpc->inprog = 0; 5885 tdrpc->err = 0; 5886 ret = EIO; 5887 if (nfs_pnfsiothreads != 0) { 5888 ret = nfs_pnfsio(start_allocatedsdorpc, tdrpc); 5889 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: nfs_pnfsio=%d\n", 5890 ret); 5891 } 5892 if (ret != 0) { 5893 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, NULL, 5894 cred, p); 5895 if (nfsds_failerr(ret) && *failposp == -1) 5896 *failposp = i; 5897 else if (error == 0 && ret != 0) 5898 error = ret; 5899 } 5900 nmpp++; 5901 fhp++; 5902 } 5903 ret = nfsrv_allocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 5904 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 5905 *failposp = mirrorcnt - 1; 5906 else if (error == 0 && ret != 0) 5907 error = ret; 5908 if (error == 0) 5909 error = nfsrv_setextattr(vp, &na, p); 5910 NFSD_DEBUG(4, "nfsrv_allocatedsrpc: aft setextat=%d\n", error); 5911 tdrpc = drpc; 5912 timo = hz / 50; /* Wait for 20msec. */ 5913 if (timo < 1) 5914 timo = 1; 5915 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 5916 /* Wait for RPCs on separate threads to complete. */ 5917 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5918 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 5919 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 5920 *failposp = i; 5921 else if (error == 0 && tdrpc->err != 0) 5922 error = tdrpc->err; 5923 } 5924 free(drpc, M_TEMP); 5925 return (error); 5926 } 5927 5928 /* 5929 * Do a deallocate RPC on a DS data file, using this structure for the 5930 * arguments, so that this function can be executed by a separate kernel 5931 * process. 5932 */ 5933 struct nfsrvdeallocatedsdorpc { 5934 int done; 5935 int inprog; 5936 struct task tsk; 5937 fhandle_t fh; 5938 off_t off; 5939 off_t len; 5940 struct nfsmount *nmp; 5941 struct ucred *cred; 5942 NFSPROC_T *p; 5943 int err; 5944 }; 5945 5946 static int 5947 nfsrv_deallocatedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, 5948 off_t len, struct nfsvattr *nap, struct ucred *cred, NFSPROC_T *p) 5949 { 5950 uint32_t *tl; 5951 struct nfsrv_descript *nd; 5952 nfsattrbit_t attrbits; 5953 nfsv4stateid_t st; 5954 int error; 5955 5956 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 5957 nfscl_reqstart(nd, NFSPROC_DEALLOCATE, nmp, (u_int8_t *)fhp, 5958 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 5959 5960 /* 5961 * Use a stateid where other is an alternating 01010 pattern and 5962 * seqid is 0xffffffff. This value is not defined as special by 5963 * the RFC and is used by the FreeBSD NFS server to indicate an 5964 * MDS->DS proxy operation. 5965 */ 5966 st.other[0] = 0x55555555; 5967 st.other[1] = 0x55555555; 5968 st.other[2] = 0x55555555; 5969 st.seqid = 0xffffffff; 5970 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 5971 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 5972 txdr_hyper(off, tl); tl += 2; 5973 txdr_hyper(len, tl); tl += 2; 5974 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: len=%jd\n", (intmax_t)len); 5975 5976 /* Do a Getattr for the attributes that change upon writing. */ 5977 NFSZERO_ATTRBIT(&attrbits); 5978 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 5979 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 5980 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 5981 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 5982 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 5983 *tl = txdr_unsigned(NFSV4OP_GETATTR); 5984 nfsrv_putattrbit(nd, &attrbits); 5985 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 5986 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5987 if (error != 0) { 5988 free(nd, M_TEMP); 5989 return (error); 5990 } 5991 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft deallocaterpc=%d\n", 5992 nd->nd_repstat); 5993 /* Get rid of weak cache consistency data for now. */ 5994 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 5995 (ND_NFSV4 | ND_V4WCCATTR)) { 5996 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 5997 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 5998 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: wcc attr=%d\n", error); 5999 if (error != 0) 6000 goto nfsmout; 6001 /* 6002 * Get rid of Op# and status for next op. 6003 */ 6004 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6005 if (*++tl != 0) 6006 nd->nd_flag |= ND_NOMOREDATA; 6007 } 6008 if (nd->nd_repstat == 0) { 6009 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6010 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL, 6011 NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 6012 } else 6013 error = nd->nd_repstat; 6014 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc: aft loadattr=%d\n", error); 6015 nfsmout: 6016 m_freem(nd->nd_mrep); 6017 free(nd, M_TEMP); 6018 NFSD_DEBUG(4, "nfsrv_deallocatedsdorpc error=%d\n", error); 6019 return (error); 6020 } 6021 6022 /* 6023 * Start up the thread that will execute nfsrv_deallocatedsdorpc(). 6024 */ 6025 static void 6026 start_deallocatedsdorpc(void *arg, int pending) 6027 { 6028 struct nfsrvdeallocatedsdorpc *drpc; 6029 6030 drpc = (struct nfsrvdeallocatedsdorpc *)arg; 6031 drpc->err = nfsrv_deallocatedsdorpc(drpc->nmp, &drpc->fh, drpc->off, 6032 drpc->len, NULL, drpc->cred, drpc->p); 6033 drpc->done = 1; 6034 NFSD_DEBUG(4, "start_deallocatedsdorpc: err=%d\n", drpc->err); 6035 } 6036 6037 static int 6038 nfsrv_deallocatedsrpc(fhandle_t *fhp, off_t off, off_t len, struct ucred *cred, 6039 NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 6040 int *failposp) 6041 { 6042 struct nfsrvdeallocatedsdorpc *drpc, *tdrpc = NULL; 6043 struct nfsvattr na; 6044 int error, i, ret, timo; 6045 6046 NFSD_DEBUG(4, "in nfsrv_deallocatedsrpc\n"); 6047 drpc = NULL; 6048 if (mirrorcnt > 1) 6049 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6050 M_WAITOK); 6051 6052 /* 6053 * Do the deallocate RPC for every DS, using a separate kernel process 6054 * for every DS except the last one. 6055 */ 6056 error = 0; 6057 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6058 tdrpc->done = 0; 6059 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6060 tdrpc->off = off; 6061 tdrpc->len = len; 6062 tdrpc->nmp = *nmpp; 6063 tdrpc->cred = cred; 6064 tdrpc->p = p; 6065 tdrpc->inprog = 0; 6066 tdrpc->err = 0; 6067 ret = EIO; 6068 if (nfs_pnfsiothreads != 0) { 6069 ret = nfs_pnfsio(start_deallocatedsdorpc, tdrpc); 6070 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: nfs_pnfsio=%d\n", 6071 ret); 6072 } 6073 if (ret != 0) { 6074 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, 6075 NULL, cred, p); 6076 if (nfsds_failerr(ret) && *failposp == -1) 6077 *failposp = i; 6078 else if (error == 0 && ret != 0) 6079 error = ret; 6080 } 6081 nmpp++; 6082 fhp++; 6083 } 6084 ret = nfsrv_deallocatedsdorpc(*nmpp, fhp, off, len, &na, cred, p); 6085 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6086 *failposp = mirrorcnt - 1; 6087 else if (error == 0 && ret != 0) 6088 error = ret; 6089 if (error == 0) 6090 error = nfsrv_setextattr(vp, &na, p); 6091 NFSD_DEBUG(4, "nfsrv_deallocatedsrpc: aft setextat=%d\n", error); 6092 tdrpc = drpc; 6093 timo = hz / 50; /* Wait for 20msec. */ 6094 if (timo < 1) 6095 timo = 1; 6096 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6097 /* Wait for RPCs on separate threads to complete. */ 6098 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6099 tsleep(&tdrpc->tsk, PVFS, "srvalds", timo); 6100 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6101 *failposp = i; 6102 else if (error == 0 && tdrpc->err != 0) 6103 error = tdrpc->err; 6104 } 6105 free(drpc, M_TEMP); 6106 return (error); 6107 } 6108 6109 static int 6110 nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6111 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap, 6112 struct nfsvattr *dsnap) 6113 { 6114 uint32_t *tl; 6115 struct nfsrv_descript *nd; 6116 nfsv4stateid_t st; 6117 nfsattrbit_t attrbits; 6118 int error; 6119 6120 NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n"); 6121 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6122 /* 6123 * Use a stateid where other is an alternating 01010 pattern and 6124 * seqid is 0xffffffff. This value is not defined as special by 6125 * the RFC and is used by the FreeBSD NFS server to indicate an 6126 * MDS->DS proxy operation. 6127 */ 6128 st.other[0] = 0x55555555; 6129 st.other[1] = 0x55555555; 6130 st.other[2] = 0x55555555; 6131 st.seqid = 0xffffffff; 6132 nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6133 NULL, NULL, 0, 0, cred); 6134 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6135 nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0); 6136 6137 /* Do a Getattr for the attributes that change due to writing. */ 6138 NFSZERO_ATTRBIT(&attrbits); 6139 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6140 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6141 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6142 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6143 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6144 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 6145 *tl = txdr_unsigned(NFSV4OP_GETATTR); 6146 (void) nfsrv_putattrbit(nd, &attrbits); 6147 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6148 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6149 if (error != 0) { 6150 free(nd, M_TEMP); 6151 return (error); 6152 } 6153 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n", 6154 nd->nd_repstat); 6155 /* Get rid of weak cache consistency data for now. */ 6156 if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) == 6157 (ND_NFSV4 | ND_V4WCCATTR)) { 6158 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6159 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL); 6160 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error); 6161 if (error != 0) 6162 goto nfsmout; 6163 /* 6164 * Get rid of Op# and status for next op. 6165 */ 6166 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6167 if (*++tl != 0) 6168 nd->nd_flag |= ND_NOMOREDATA; 6169 } 6170 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 6171 if (error != 0) 6172 goto nfsmout; 6173 if (nd->nd_repstat != 0) 6174 error = nd->nd_repstat; 6175 /* 6176 * Get the Change, Size, Access Time and Modify Time attributes and set 6177 * on the Metadata file, so its attributes will be what the file's 6178 * would be if it had been written. 6179 */ 6180 if (error == 0) { 6181 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6182 error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL, 6183 NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL, 6184 NULL); 6185 } 6186 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error); 6187 nfsmout: 6188 m_freem(nd->nd_mrep); 6189 free(nd, M_TEMP); 6190 NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error); 6191 return (error); 6192 } 6193 6194 struct nfsrvsetattrdsdorpc { 6195 int done; 6196 int inprog; 6197 struct task tsk; 6198 fhandle_t fh; 6199 struct nfsmount *nmp; 6200 struct vnode *vp; 6201 struct ucred *cred; 6202 NFSPROC_T *p; 6203 struct nfsvattr na; 6204 struct nfsvattr dsna; 6205 int err; 6206 }; 6207 6208 /* 6209 * Start up the thread that will execute nfsrv_setattrdsdorpc(). 6210 */ 6211 static void 6212 start_setattrdsdorpc(void *arg, int pending) 6213 { 6214 struct nfsrvsetattrdsdorpc *drpc; 6215 6216 drpc = (struct nfsrvsetattrdsdorpc *)arg; 6217 drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p, 6218 drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna); 6219 drpc->done = 1; 6220 } 6221 6222 static int 6223 nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6224 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, 6225 struct nfsvattr *nap, int *failposp) 6226 { 6227 struct nfsrvsetattrdsdorpc *drpc, *tdrpc = NULL; 6228 struct nfsvattr na; 6229 int error, i, ret, timo; 6230 6231 NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n"); 6232 drpc = NULL; 6233 if (mirrorcnt > 1) 6234 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6235 M_WAITOK); 6236 6237 /* 6238 * Do the setattr RPC for every DS, using a separate kernel process 6239 * for every DS except the last one. 6240 */ 6241 error = 0; 6242 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6243 tdrpc->done = 0; 6244 tdrpc->inprog = 0; 6245 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6246 tdrpc->nmp = *nmpp; 6247 tdrpc->vp = vp; 6248 tdrpc->cred = cred; 6249 tdrpc->p = p; 6250 tdrpc->na = *nap; 6251 tdrpc->err = 0; 6252 ret = EIO; 6253 if (nfs_pnfsiothreads != 0) { 6254 ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc); 6255 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n", 6256 ret); 6257 } 6258 if (ret != 0) { 6259 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, 6260 &na); 6261 if (nfsds_failerr(ret) && *failposp == -1) 6262 *failposp = i; 6263 else if (error == 0 && ret != 0) 6264 error = ret; 6265 } 6266 nmpp++; 6267 fhp++; 6268 } 6269 ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na); 6270 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6271 *failposp = mirrorcnt - 1; 6272 else if (error == 0 && ret != 0) 6273 error = ret; 6274 if (error == 0) 6275 error = nfsrv_setextattr(vp, &na, p); 6276 NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error); 6277 tdrpc = drpc; 6278 timo = hz / 50; /* Wait for 20msec. */ 6279 if (timo < 1) 6280 timo = 1; 6281 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6282 /* Wait for RPCs on separate threads to complete. */ 6283 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6284 tsleep(&tdrpc->tsk, PVFS, "srvsads", timo); 6285 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6286 *failposp = i; 6287 else if (error == 0 && tdrpc->err != 0) 6288 error = tdrpc->err; 6289 } 6290 free(drpc, M_TEMP); 6291 return (error); 6292 } 6293 6294 /* 6295 * Do a Setattr of an NFSv4 ACL on the DS file. 6296 */ 6297 static int 6298 nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6299 struct vnode *vp, struct nfsmount *nmp, struct acl *aclp) 6300 { 6301 struct nfsrv_descript *nd; 6302 nfsv4stateid_t st; 6303 nfsattrbit_t attrbits; 6304 int error; 6305 6306 NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n"); 6307 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6308 /* 6309 * Use a stateid where other is an alternating 01010 pattern and 6310 * seqid is 0xffffffff. This value is not defined as special by 6311 * the RFC and is used by the FreeBSD NFS server to indicate an 6312 * MDS->DS proxy operation. 6313 */ 6314 st.other[0] = 0x55555555; 6315 st.other[1] = 0x55555555; 6316 st.other[2] = 0x55555555; 6317 st.seqid = 0xffffffff; 6318 nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp), 6319 NULL, NULL, 0, 0, cred); 6320 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6321 NFSZERO_ATTRBIT(&attrbits); 6322 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 6323 /* 6324 * The "vp" argument to nfsv4_fillattr() is only used for vnode_type(), 6325 * so passing in the metadata "vp" will be ok, since it is of 6326 * the same type (VREG). 6327 */ 6328 nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL, 6329 NULL, 0, 0, 0, 0, 0, NULL); 6330 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6331 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6332 if (error != 0) { 6333 free(nd, M_TEMP); 6334 return (error); 6335 } 6336 NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n", 6337 nd->nd_repstat); 6338 error = nd->nd_repstat; 6339 m_freem(nd->nd_mrep); 6340 free(nd, M_TEMP); 6341 return (error); 6342 } 6343 6344 struct nfsrvsetacldsdorpc { 6345 int done; 6346 int inprog; 6347 struct task tsk; 6348 fhandle_t fh; 6349 struct nfsmount *nmp; 6350 struct vnode *vp; 6351 struct ucred *cred; 6352 NFSPROC_T *p; 6353 struct acl *aclp; 6354 int err; 6355 }; 6356 6357 /* 6358 * Start up the thread that will execute nfsrv_setacldsdorpc(). 6359 */ 6360 static void 6361 start_setacldsdorpc(void *arg, int pending) 6362 { 6363 struct nfsrvsetacldsdorpc *drpc; 6364 6365 drpc = (struct nfsrvsetacldsdorpc *)arg; 6366 drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p, 6367 drpc->vp, drpc->nmp, drpc->aclp); 6368 drpc->done = 1; 6369 } 6370 6371 static int 6372 nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6373 struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp, 6374 int *failposp) 6375 { 6376 struct nfsrvsetacldsdorpc *drpc, *tdrpc = NULL; 6377 int error, i, ret, timo; 6378 6379 NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n"); 6380 drpc = NULL; 6381 if (mirrorcnt > 1) 6382 tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP, 6383 M_WAITOK); 6384 6385 /* 6386 * Do the setattr RPC for every DS, using a separate kernel process 6387 * for every DS except the last one. 6388 */ 6389 error = 0; 6390 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6391 tdrpc->done = 0; 6392 tdrpc->inprog = 0; 6393 NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp)); 6394 tdrpc->nmp = *nmpp; 6395 tdrpc->vp = vp; 6396 tdrpc->cred = cred; 6397 tdrpc->p = p; 6398 tdrpc->aclp = aclp; 6399 tdrpc->err = 0; 6400 ret = EIO; 6401 if (nfs_pnfsiothreads != 0) { 6402 ret = nfs_pnfsio(start_setacldsdorpc, tdrpc); 6403 NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n", 6404 ret); 6405 } 6406 if (ret != 0) { 6407 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, 6408 aclp); 6409 if (nfsds_failerr(ret) && *failposp == -1) 6410 *failposp = i; 6411 else if (error == 0 && ret != 0) 6412 error = ret; 6413 } 6414 nmpp++; 6415 fhp++; 6416 } 6417 ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp); 6418 if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1) 6419 *failposp = mirrorcnt - 1; 6420 else if (error == 0 && ret != 0) 6421 error = ret; 6422 NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error); 6423 tdrpc = drpc; 6424 timo = hz / 50; /* Wait for 20msec. */ 6425 if (timo < 1) 6426 timo = 1; 6427 for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) { 6428 /* Wait for RPCs on separate threads to complete. */ 6429 while (tdrpc->inprog != 0 && tdrpc->done == 0) 6430 tsleep(&tdrpc->tsk, PVFS, "srvacds", timo); 6431 if (nfsds_failerr(tdrpc->err) && *failposp == -1) 6432 *failposp = i; 6433 else if (error == 0 && tdrpc->err != 0) 6434 error = tdrpc->err; 6435 } 6436 free(drpc, M_TEMP); 6437 return (error); 6438 } 6439 6440 /* 6441 * Getattr call to the DS for the attributes that change due to writing. 6442 */ 6443 static int 6444 nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p, 6445 struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap) 6446 { 6447 struct nfsrv_descript *nd; 6448 int error; 6449 nfsattrbit_t attrbits; 6450 6451 NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n"); 6452 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6453 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp, 6454 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6455 NFSZERO_ATTRBIT(&attrbits); 6456 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 6457 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 6458 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS); 6459 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 6460 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SPACEUSED); 6461 (void) nfsrv_putattrbit(nd, &attrbits); 6462 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6463 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6464 if (error != 0) { 6465 free(nd, M_TEMP); 6466 return (error); 6467 } 6468 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n", 6469 nd->nd_repstat); 6470 if (nd->nd_repstat == 0) { 6471 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 6472 NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, 6473 NULL, NULL, NULL); 6474 /* 6475 * We can only save the updated values in the extended 6476 * attribute if the vp is exclusively locked. 6477 * This should happen when any of the following operations 6478 * occur on the vnode: 6479 * Close, Delegreturn, LayoutCommit, LayoutReturn 6480 * As such, the updated extended attribute should get saved 6481 * before nfsrv_checkdsattr() returns 0 and allows the cached 6482 * attributes to be returned without calling this function. 6483 */ 6484 if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) { 6485 error = nfsrv_setextattr(vp, nap, p); 6486 NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n", 6487 error); 6488 } 6489 } else 6490 error = nd->nd_repstat; 6491 m_freem(nd->nd_mrep); 6492 free(nd, M_TEMP); 6493 NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error); 6494 return (error); 6495 } 6496 6497 /* 6498 * Seek call to a DS. 6499 */ 6500 static int 6501 nfsrv_seekdsrpc(fhandle_t *fhp, off_t *offp, int content, bool *eofp, 6502 struct ucred *cred, NFSPROC_T *p, struct nfsmount *nmp) 6503 { 6504 uint32_t *tl; 6505 struct nfsrv_descript *nd; 6506 nfsv4stateid_t st; 6507 int error; 6508 6509 NFSD_DEBUG(4, "in nfsrv_seekdsrpc\n"); 6510 /* 6511 * Use a stateid where other is an alternating 01010 pattern and 6512 * seqid is 0xffffffff. This value is not defined as special by 6513 * the RFC and is used by the FreeBSD NFS server to indicate an 6514 * MDS->DS proxy operation. 6515 */ 6516 st.other[0] = 0x55555555; 6517 st.other[1] = 0x55555555; 6518 st.other[2] = 0x55555555; 6519 st.seqid = 0xffffffff; 6520 nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO); 6521 nfscl_reqstart(nd, NFSPROC_SEEKDS, nmp, (u_int8_t *)fhp, 6522 sizeof(fhandle_t), NULL, NULL, 0, 0, cred); 6523 nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID); 6524 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6525 txdr_hyper(*offp, tl); tl += 2; 6526 *tl = txdr_unsigned(content); 6527 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 6528 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 6529 if (error != 0) { 6530 free(nd, M_TEMP); 6531 return (error); 6532 } 6533 NFSD_DEBUG(4, "nfsrv_seekdsrpc: aft seekrpc=%d\n", nd->nd_repstat); 6534 if (nd->nd_repstat == 0) { 6535 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + NFSX_HYPER); 6536 if (*tl++ == newnfs_true) 6537 *eofp = true; 6538 else 6539 *eofp = false; 6540 *offp = fxdr_hyper(tl); 6541 } else 6542 error = nd->nd_repstat; 6543 nfsmout: 6544 m_freem(nd->nd_mrep); 6545 free(nd, M_TEMP); 6546 NFSD_DEBUG(4, "nfsrv_seekdsrpc error=%d\n", error); 6547 return (error); 6548 } 6549 6550 /* 6551 * Get the device id and file handle for a DS file. 6552 */ 6553 int 6554 nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp, 6555 fhandle_t *fhp, char *devid) 6556 { 6557 int buflen, error; 6558 char *buf; 6559 6560 buflen = 1024; 6561 buf = malloc(buflen, M_TEMP, M_WAITOK); 6562 error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL, 6563 fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL); 6564 free(buf, M_TEMP); 6565 return (error); 6566 } 6567 6568 /* 6569 * Do a Lookup against the DS for the filename. 6570 */ 6571 static int 6572 nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf, 6573 struct vnode **nvpp, NFSPROC_T *p) 6574 { 6575 struct nameidata named; 6576 struct ucred *tcred; 6577 char *bufp; 6578 u_long *hashp; 6579 struct vnode *nvp; 6580 int error; 6581 6582 tcred = newnfs_getcred(); 6583 named.ni_cnd.cn_nameiop = LOOKUP; 6584 named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY; 6585 named.ni_cnd.cn_cred = tcred; 6586 named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF; 6587 nfsvno_setpathbuf(&named, &bufp, &hashp); 6588 named.ni_cnd.cn_nameptr = bufp; 6589 named.ni_cnd.cn_namelen = strlen(pf->dsf_filename); 6590 strlcpy(bufp, pf->dsf_filename, NAME_MAX); 6591 NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp); 6592 error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd); 6593 NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error); 6594 NFSFREECRED(tcred); 6595 nfsvno_relpathbuf(&named); 6596 if (error == 0) 6597 *nvpp = nvp; 6598 NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error); 6599 return (error); 6600 } 6601 6602 /* 6603 * Set the file handle to the correct one. 6604 */ 6605 static void 6606 nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, char *devid, 6607 char *fnamep, struct vnode *nvp, NFSPROC_T *p) 6608 { 6609 struct nfsnode *np; 6610 int ret = 0; 6611 6612 np = VTONFS(nvp); 6613 NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH); 6614 /* 6615 * We can only do a vn_set_extattr() if the vnode is exclusively 6616 * locked and vn_start_write() has been done. If devid != NULL or 6617 * fnamep != NULL or the vnode is shared locked, vn_start_write() 6618 * may not have been done. 6619 * If not done now, it will be done on a future call. 6620 */ 6621 if (devid == NULL && fnamep == NULL && NFSVOPISLOCKED(vp) == 6622 LK_EXCLUSIVE) 6623 ret = vn_extattr_set(vp, IO_NODELOCKED, 6624 EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", sizeof(*pf), 6625 (char *)pf, p); 6626 NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret); 6627 } 6628 6629 /* 6630 * Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point 6631 * when the DS has failed. 6632 */ 6633 void 6634 nfsrv_killrpcs(struct nfsmount *nmp) 6635 { 6636 6637 /* 6638 * Call newnfs_nmcancelreqs() to cause 6639 * any RPCs in progress on the mount point to 6640 * fail. 6641 * This will cause any process waiting for an 6642 * RPC to complete while holding a vnode lock 6643 * on the mounted-on vnode (such as "df" or 6644 * a non-forced "umount") to fail. 6645 * This will unlock the mounted-on vnode so 6646 * a forced dismount can succeed. 6647 * The NFSMNTP_CANCELRPCS flag should be set when this function is 6648 * called. 6649 */ 6650 newnfs_nmcancelreqs(nmp); 6651 } 6652 6653 /* 6654 * Sum up the statfs info for each of the DSs, so that the client will 6655 * receive the total for all DSs. 6656 */ 6657 static int 6658 nfsrv_pnfsstatfs(struct statfs *sf, struct mount *mp) 6659 { 6660 struct statfs *tsf; 6661 struct nfsdevice *ds; 6662 struct vnode **dvpp, **tdvpp, *dvp; 6663 uint64_t tot; 6664 int cnt, error = 0, i; 6665 6666 if (nfsrv_devidcnt <= 0) 6667 return (ENXIO); 6668 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 6669 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 6670 6671 /* Get an array of the dvps for the DSs. */ 6672 tdvpp = dvpp; 6673 i = 0; 6674 NFSDDSLOCK(); 6675 /* First, search for matches for same file system. */ 6676 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6677 if (ds->nfsdev_nmp != NULL && ds->nfsdev_mdsisset != 0 && 6678 fsidcmp(&ds->nfsdev_mdsfsid, &mp->mnt_stat.f_fsid) == 0) { 6679 if (++i > nfsrv_devidcnt) 6680 break; 6681 *tdvpp++ = ds->nfsdev_dvp; 6682 } 6683 } 6684 /* 6685 * If no matches for same file system, total all servers not assigned 6686 * to a file system. 6687 */ 6688 if (i == 0) { 6689 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 6690 if (ds->nfsdev_nmp != NULL && 6691 ds->nfsdev_mdsisset == 0) { 6692 if (++i > nfsrv_devidcnt) 6693 break; 6694 *tdvpp++ = ds->nfsdev_dvp; 6695 } 6696 } 6697 } 6698 NFSDDSUNLOCK(); 6699 cnt = i; 6700 6701 /* Do a VFS_STATFS() for each of the DSs and sum them up. */ 6702 tdvpp = dvpp; 6703 for (i = 0; i < cnt && error == 0; i++) { 6704 dvp = *tdvpp++; 6705 error = VFS_STATFS(dvp->v_mount, tsf); 6706 if (error == 0) { 6707 if (sf->f_bsize == 0) { 6708 if (tsf->f_bsize > 0) 6709 sf->f_bsize = tsf->f_bsize; 6710 else 6711 sf->f_bsize = 8192; 6712 } 6713 if (tsf->f_blocks > 0) { 6714 if (sf->f_bsize != tsf->f_bsize) { 6715 tot = tsf->f_blocks * tsf->f_bsize; 6716 sf->f_blocks += (tot / sf->f_bsize); 6717 } else 6718 sf->f_blocks += tsf->f_blocks; 6719 } 6720 if (tsf->f_bfree > 0) { 6721 if (sf->f_bsize != tsf->f_bsize) { 6722 tot = tsf->f_bfree * tsf->f_bsize; 6723 sf->f_bfree += (tot / sf->f_bsize); 6724 } else 6725 sf->f_bfree += tsf->f_bfree; 6726 } 6727 if (tsf->f_bavail > 0) { 6728 if (sf->f_bsize != tsf->f_bsize) { 6729 tot = tsf->f_bavail * tsf->f_bsize; 6730 sf->f_bavail += (tot / sf->f_bsize); 6731 } else 6732 sf->f_bavail += tsf->f_bavail; 6733 } 6734 } 6735 } 6736 free(tsf, M_TEMP); 6737 free(dvpp, M_TEMP); 6738 return (error); 6739 } 6740 6741 /* 6742 * Set an NFSv4 acl. 6743 */ 6744 int 6745 nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p) 6746 { 6747 int error; 6748 6749 if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) { 6750 error = NFSERR_ATTRNOTSUPP; 6751 goto out; 6752 } 6753 /* 6754 * With NFSv4 ACLs, chmod(2) may need to add additional entries. 6755 * Make sure it has enough room for that - splitting every entry 6756 * into two and appending "canonical six" entries at the end. 6757 * Cribbed out of kern/vfs_acl.c - Rick M. 6758 */ 6759 if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) { 6760 error = NFSERR_ATTRNOTSUPP; 6761 goto out; 6762 } 6763 error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p); 6764 if (error == 0) { 6765 error = nfsrv_dssetacl(vp, aclp, cred, p); 6766 if (error == ENOENT) 6767 error = 0; 6768 } 6769 6770 out: 6771 NFSEXITCODE(error); 6772 return (error); 6773 } 6774 6775 /* 6776 * Seek vnode op call (actually it is a VOP_IOCTL()). 6777 * This function is called with the vnode locked, but unlocks and vrele()s 6778 * the vp before returning. 6779 */ 6780 int 6781 nfsvno_seek(struct nfsrv_descript *nd, struct vnode *vp, u_long cmd, 6782 off_t *offp, int content, bool *eofp, struct ucred *cred, NFSPROC_T *p) 6783 { 6784 struct nfsvattr at; 6785 int error, ret; 6786 6787 ASSERT_VOP_LOCKED(vp, "nfsvno_seek vp"); 6788 /* 6789 * Attempt to seek on a DS file. A return of ENOENT implies 6790 * there is no DS file to seek on. 6791 */ 6792 error = nfsrv_proxyds(vp, 0, 0, cred, p, NFSPROC_SEEKDS, NULL, 6793 NULL, NULL, NULL, NULL, offp, content, eofp); 6794 if (error != ENOENT) { 6795 vput(vp); 6796 return (error); 6797 } 6798 6799 /* 6800 * Do the VOP_IOCTL() call. For the case where *offp == file_size, 6801 * VOP_IOCTL() will return ENXIO. However, the correct reply for 6802 * NFSv4.2 is *eofp == true and error == 0 for this case. 6803 */ 6804 NFSVOPUNLOCK(vp); 6805 error = VOP_IOCTL(vp, cmd, offp, 0, cred, p); 6806 *eofp = false; 6807 if (error == ENXIO || (error == 0 && cmd == FIOSEEKHOLE)) { 6808 /* Handle the cases where we might be at EOF. */ 6809 ret = nfsvno_getattr(vp, &at, nd, p, 0, NULL); 6810 if (ret == 0 && *offp == at.na_size) { 6811 *eofp = true; 6812 error = 0; 6813 } 6814 if (ret != 0 && error == 0) 6815 error = ret; 6816 } 6817 vrele(vp); 6818 NFSEXITCODE(error); 6819 return (error); 6820 } 6821 6822 /* 6823 * Allocate vnode op call. 6824 */ 6825 int 6826 nfsvno_allocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6827 NFSPROC_T *p) 6828 { 6829 int error; 6830 off_t olen; 6831 6832 ASSERT_VOP_ELOCKED(vp, "nfsvno_allocate vp"); 6833 /* 6834 * Attempt to allocate on a DS file. A return of ENOENT implies 6835 * there is no DS file to allocate on. 6836 */ 6837 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_ALLOCATE, NULL, 6838 NULL, NULL, NULL, NULL, &len, 0, NULL); 6839 if (error != ENOENT) 6840 return (error); 6841 6842 /* 6843 * Do the actual VOP_ALLOCATE(), looping so long as 6844 * progress is being made, to achieve completion. 6845 */ 6846 do { 6847 olen = len; 6848 error = VOP_ALLOCATE(vp, &off, &len, IO_SYNC, cred); 6849 if (error == 0 && len > 0 && olen > len) 6850 maybe_yield(); 6851 } while (error == 0 && len > 0 && olen > len); 6852 if (error == 0 && len > 0) 6853 error = NFSERR_IO; 6854 NFSEXITCODE(error); 6855 return (error); 6856 } 6857 6858 /* 6859 * Deallocate vnode op call. 6860 */ 6861 int 6862 nfsvno_deallocate(struct vnode *vp, off_t off, off_t len, struct ucred *cred, 6863 NFSPROC_T *p) 6864 { 6865 int error; 6866 off_t olen; 6867 6868 ASSERT_VOP_ELOCKED(vp, "nfsvno_deallocate vp"); 6869 /* 6870 * Attempt to deallocate on a DS file. A return of ENOENT implies 6871 * there is no DS file to deallocate on. 6872 */ 6873 error = nfsrv_proxyds(vp, off, 0, cred, p, NFSPROC_DEALLOCATE, NULL, 6874 NULL, NULL, NULL, NULL, &len, 0, NULL); 6875 if (error != ENOENT) 6876 return (error); 6877 6878 /* 6879 * Do the actual VOP_DEALLOCATE(), looping so long as 6880 * progress is being made, to achieve completion. 6881 */ 6882 do { 6883 olen = len; 6884 error = VOP_DEALLOCATE(vp, &off, &len, 0, IO_SYNC, cred); 6885 if (error == 0 && len > 0 && olen > len) 6886 maybe_yield(); 6887 } while (error == 0 && len > 0 && olen > len); 6888 if (error == 0 && len > 0) 6889 error = NFSERR_IO; 6890 NFSEXITCODE(error); 6891 return (error); 6892 } 6893 6894 /* 6895 * Get Extended Atribute vnode op into an mbuf list. 6896 */ 6897 int 6898 nfsvno_getxattr(struct vnode *vp, char *name, uint32_t maxresp, 6899 struct ucred *cred, uint64_t flag, int maxextsiz, struct thread *p, 6900 struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 6901 { 6902 struct iovec *iv; 6903 struct uio io, *uiop = &io; 6904 struct mbuf *m, *m2; 6905 int alen, error, len, tlen; 6906 size_t siz; 6907 6908 /* First, find out the size of the extended attribute. */ 6909 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 6910 &siz, cred, p); 6911 if (error != 0) 6912 return (NFSERR_NOXATTR); 6913 if (siz > maxresp - NFS_MAXXDR) 6914 return (NFSERR_XATTR2BIG); 6915 len = siz; 6916 tlen = NFSM_RNDUP(len); 6917 if (tlen > 0) { 6918 /* 6919 * If cnt > MCLBYTES and the reply will not be saved, use 6920 * ext_pgs mbufs for TLS. 6921 * For NFSv4.0, we do not know for sure if the reply will 6922 * be saved, so do not use ext_pgs mbufs for NFSv4.0. 6923 * Always use ext_pgs mbufs if ND_EXTPG is set. 6924 */ 6925 if ((flag & ND_EXTPG) != 0 || (tlen > MCLBYTES && 6926 (flag & (ND_TLS | ND_SAVEREPLY)) == ND_TLS && 6927 (flag & (ND_NFSV4 | ND_NFSV41)) != ND_NFSV4)) 6928 uiop->uio_iovcnt = nfsrv_createiovec_extpgs(tlen, 6929 maxextsiz, &m, &m2, &iv); 6930 else 6931 uiop->uio_iovcnt = nfsrv_createiovec(tlen, &m, &m2, 6932 &iv); 6933 uiop->uio_iov = iv; 6934 } else { 6935 uiop->uio_iovcnt = 0; 6936 uiop->uio_iov = iv = NULL; 6937 m = m2 = NULL; 6938 } 6939 uiop->uio_offset = 0; 6940 uiop->uio_resid = tlen; 6941 uiop->uio_rw = UIO_READ; 6942 uiop->uio_segflg = UIO_SYSSPACE; 6943 uiop->uio_td = p; 6944 #ifdef MAC 6945 error = mac_vnode_check_getextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6946 name); 6947 if (error != 0) 6948 goto out; 6949 #endif 6950 6951 if (tlen > 0) 6952 error = VOP_GETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 6953 NULL, cred, p); 6954 if (error != 0) 6955 goto out; 6956 if (uiop->uio_resid > 0) { 6957 alen = tlen; 6958 len = tlen - uiop->uio_resid; 6959 tlen = NFSM_RNDUP(len); 6960 if (alen != tlen) 6961 printf("nfsvno_getxattr: weird size read\n"); 6962 if (tlen == 0) { 6963 m_freem(m); 6964 m = m2 = NULL; 6965 } else if (alen != tlen || tlen != len) 6966 m2 = nfsrv_adj(m, alen - tlen, tlen - len); 6967 } 6968 *lenp = len; 6969 *mpp = m; 6970 *mpendp = m2; 6971 6972 out: 6973 if (error != 0) { 6974 if (m != NULL) 6975 m_freem(m); 6976 *lenp = 0; 6977 } 6978 free(iv, M_TEMP); 6979 NFSEXITCODE(error); 6980 return (error); 6981 } 6982 6983 /* 6984 * Set Extended attribute vnode op from an mbuf list. 6985 */ 6986 int 6987 nfsvno_setxattr(struct vnode *vp, char *name, int len, struct mbuf *m, 6988 char *cp, struct ucred *cred, struct thread *p) 6989 { 6990 struct iovec *iv; 6991 struct uio uio, *uiop = &uio; 6992 int cnt, error; 6993 6994 error = 0; 6995 #ifdef MAC 6996 error = mac_vnode_check_setextattr(cred, vp, EXTATTR_NAMESPACE_USER, 6997 name); 6998 #endif 6999 if (error != 0) 7000 goto out; 7001 7002 uiop->uio_rw = UIO_WRITE; 7003 uiop->uio_segflg = UIO_SYSSPACE; 7004 uiop->uio_td = p; 7005 uiop->uio_offset = 0; 7006 uiop->uio_resid = len; 7007 if (len > 0) { 7008 error = nfsrv_createiovecw(len, m, cp, &iv, &cnt); 7009 uiop->uio_iov = iv; 7010 uiop->uio_iovcnt = cnt; 7011 } else { 7012 uiop->uio_iov = iv = NULL; 7013 uiop->uio_iovcnt = 0; 7014 } 7015 if (error == 0) { 7016 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, uiop, 7017 cred, p); 7018 if (error == 0) { 7019 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 7020 nfsvno_updateds(vp, cred, p); 7021 error = VOP_FSYNC(vp, MNT_WAIT, p); 7022 } 7023 free(iv, M_TEMP); 7024 } 7025 7026 out: 7027 NFSEXITCODE(error); 7028 return (error); 7029 } 7030 7031 /* 7032 * For a pNFS server, the DS file's ctime and 7033 * va_filerev (TimeMetadata and Change) needs to 7034 * be updated. This is a hack, but works by 7035 * flipping the S_ISGID bit in va_mode and then 7036 * flipping it back. 7037 * It does result in two MDS->DS RPCs, but creating 7038 * a custom RPC just to do this seems overkill, since 7039 * Setxattr/Rmxattr will not be done that frequently. 7040 * If it fails part way through, that is not too 7041 * serious, since the DS file is never executed. 7042 */ 7043 static void 7044 nfsvno_updateds(struct vnode *vp, struct ucred *cred, NFSPROC_T *p) 7045 { 7046 struct nfsvattr nva; 7047 int ret; 7048 u_short tmode; 7049 7050 ret = VOP_GETATTR(vp, &nva.na_vattr, cred); 7051 if (ret == 0) { 7052 tmode = nva.na_mode; 7053 NFSVNO_ATTRINIT(&nva); 7054 tmode ^= S_ISGID; 7055 NFSVNO_SETATTRVAL(&nva, mode, tmode); 7056 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 7057 NFSPROC_SETATTR, NULL, NULL, NULL, &nva, 7058 NULL, NULL, 0, NULL); 7059 if (ret == 0) { 7060 tmode ^= S_ISGID; 7061 NFSVNO_SETATTRVAL(&nva, mode, tmode); 7062 ret = nfsrv_proxyds(vp, 0, 0, cred, p, 7063 NFSPROC_SETATTR, NULL, NULL, NULL, 7064 &nva, NULL, NULL, 0, NULL); 7065 } 7066 } 7067 } 7068 7069 /* 7070 * Remove Extended attribute vnode op. 7071 */ 7072 int 7073 nfsvno_rmxattr(struct nfsrv_descript *nd, struct vnode *vp, char *name, 7074 struct ucred *cred, struct thread *p) 7075 { 7076 int error; 7077 7078 /* 7079 * Get rid of any delegations. I am not sure why this is required, 7080 * but RFC-8276 says so. 7081 */ 7082 error = nfsrv_checkremove(vp, 0, nd, nd->nd_clientid, p); 7083 if (error != 0) 7084 goto out; 7085 #ifdef MAC 7086 error = mac_vnode_check_deleteextattr(cred, vp, EXTATTR_NAMESPACE_USER, 7087 name); 7088 if (error != 0) 7089 goto out; 7090 #endif 7091 7092 error = VOP_DELETEEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, cred, p); 7093 if (error == EOPNOTSUPP) 7094 error = VOP_SETEXTATTR(vp, EXTATTR_NAMESPACE_USER, name, NULL, 7095 cred, p); 7096 if (error == 0) { 7097 if (vp->v_type == VREG && nfsrv_devidcnt != 0) 7098 nfsvno_updateds(vp, cred, p); 7099 error = VOP_FSYNC(vp, MNT_WAIT, p); 7100 } 7101 out: 7102 NFSEXITCODE(error); 7103 return (error); 7104 } 7105 7106 /* 7107 * List Extended Atribute vnode op into an mbuf list. 7108 */ 7109 int 7110 nfsvno_listxattr(struct vnode *vp, uint64_t cookie, struct ucred *cred, 7111 struct thread *p, u_char **bufp, uint32_t *lenp, bool *eofp) 7112 { 7113 struct iovec iv; 7114 struct uio io; 7115 int error; 7116 size_t siz; 7117 7118 *bufp = NULL; 7119 /* First, find out the size of the extended attribute. */ 7120 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, NULL, &siz, cred, 7121 p); 7122 if (error != 0) 7123 return (NFSERR_NOXATTR); 7124 if (siz <= cookie) { 7125 *lenp = 0; 7126 *eofp = true; 7127 goto out; 7128 } 7129 if (siz > cookie + *lenp) { 7130 siz = cookie + *lenp; 7131 *eofp = false; 7132 } else 7133 *eofp = true; 7134 /* Just choose a sanity limit of 10Mbytes for malloc(M_TEMP). */ 7135 if (siz > 10 * 1024 * 1024) { 7136 error = NFSERR_XATTR2BIG; 7137 goto out; 7138 } 7139 *bufp = malloc(siz, M_TEMP, M_WAITOK); 7140 iv.iov_base = *bufp; 7141 iv.iov_len = siz; 7142 io.uio_iovcnt = 1; 7143 io.uio_iov = &iv; 7144 io.uio_offset = 0; 7145 io.uio_resid = siz; 7146 io.uio_rw = UIO_READ; 7147 io.uio_segflg = UIO_SYSSPACE; 7148 io.uio_td = p; 7149 #ifdef MAC 7150 error = mac_vnode_check_listextattr(cred, vp, EXTATTR_NAMESPACE_USER); 7151 if (error != 0) 7152 goto out; 7153 #endif 7154 7155 error = VOP_LISTEXTATTR(vp, EXTATTR_NAMESPACE_USER, &io, NULL, cred, 7156 p); 7157 if (error != 0) 7158 goto out; 7159 if (io.uio_resid > 0) 7160 siz -= io.uio_resid; 7161 *lenp = siz; 7162 7163 out: 7164 if (error != 0) { 7165 free(*bufp, M_TEMP); 7166 *bufp = NULL; 7167 } 7168 NFSEXITCODE(error); 7169 return (error); 7170 } 7171 7172 /* 7173 * Trim trailing data off the mbuf list being built. 7174 */ 7175 void 7176 nfsm_trimtrailing(struct nfsrv_descript *nd, struct mbuf *mb, char *bpos, 7177 int bextpg, int bextpgsiz) 7178 { 7179 vm_page_t pg; 7180 int fullpgsiz, i; 7181 7182 if (mb->m_next != NULL) { 7183 m_freem(mb->m_next); 7184 mb->m_next = NULL; 7185 } 7186 if ((mb->m_flags & M_EXTPG) != 0) { 7187 KASSERT(bextpg >= 0 && bextpg < mb->m_epg_npgs, 7188 ("nfsm_trimtrailing: bextpg out of range")); 7189 KASSERT(bpos == (char *)(void *) 7190 PHYS_TO_DMAP(mb->m_epg_pa[bextpg]) + PAGE_SIZE - bextpgsiz, 7191 ("nfsm_trimtrailing: bextpgsiz bad!")); 7192 7193 /* First, get rid of any pages after this position. */ 7194 for (i = mb->m_epg_npgs - 1; i > bextpg; i--) { 7195 pg = PHYS_TO_VM_PAGE(mb->m_epg_pa[i]); 7196 vm_page_unwire_noq(pg); 7197 vm_page_free(pg); 7198 } 7199 mb->m_epg_npgs = bextpg + 1; 7200 if (bextpg == 0) 7201 fullpgsiz = PAGE_SIZE - mb->m_epg_1st_off; 7202 else 7203 fullpgsiz = PAGE_SIZE; 7204 mb->m_epg_last_len = fullpgsiz - bextpgsiz; 7205 mb->m_len = m_epg_pagelen(mb, 0, mb->m_epg_1st_off); 7206 for (i = 1; i < mb->m_epg_npgs; i++) 7207 mb->m_len += m_epg_pagelen(mb, i, 0); 7208 nd->nd_bextpgsiz = bextpgsiz; 7209 nd->nd_bextpg = bextpg; 7210 } else 7211 mb->m_len = bpos - mtod(mb, char *); 7212 nd->nd_mb = mb; 7213 nd->nd_bpos = bpos; 7214 } 7215 7216 7217 /* 7218 * Check to see if a put file handle operation should test for 7219 * NFSERR_WRONGSEC, although NFSv3 actually returns NFSERR_AUTHERR. 7220 * When Open is the next operation, NFSERR_WRONGSEC cannot be 7221 * replied for the Open cases that use a component. This can 7222 * be identified by the fact that the file handle's type is VDIR. 7223 */ 7224 bool 7225 nfsrv_checkwrongsec(struct nfsrv_descript *nd, int nextop, __enum_uint8(vtype) vtyp) 7226 { 7227 7228 if ((nd->nd_flag & ND_NFSV4) == 0) 7229 return (true); 7230 7231 if ((nd->nd_flag & ND_LASTOP) != 0) 7232 return (false); 7233 7234 if (nextop == NFSV4OP_PUTROOTFH || nextop == NFSV4OP_PUTFH || 7235 nextop == NFSV4OP_PUTPUBFH || nextop == NFSV4OP_RESTOREFH || 7236 nextop == NFSV4OP_LOOKUP || nextop == NFSV4OP_LOOKUPP || 7237 nextop == NFSV4OP_SECINFO || nextop == NFSV4OP_SECINFONONAME) 7238 return (false); 7239 if (nextop == NFSV4OP_OPEN && vtyp == VDIR) 7240 return (false); 7241 return (true); 7242 } 7243 7244 /* 7245 * Check DSs marked no space. 7246 */ 7247 void 7248 nfsrv_checknospc(void) 7249 { 7250 struct statfs *tsf; 7251 struct nfsdevice *ds; 7252 struct vnode **dvpp, **tdvpp, *dvp; 7253 char *devid, *tdevid; 7254 int cnt, error = 0, i; 7255 7256 if (nfsrv_devidcnt <= 0) 7257 return; 7258 dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK); 7259 devid = malloc(nfsrv_devidcnt * NFSX_V4DEVICEID, M_TEMP, M_WAITOK); 7260 tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK); 7261 7262 /* Get an array of the dvps for the DSs. */ 7263 tdvpp = dvpp; 7264 tdevid = devid; 7265 i = 0; 7266 NFSDDSLOCK(); 7267 /* First, search for matches for same file system. */ 7268 TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) { 7269 if (ds->nfsdev_nmp != NULL && ds->nfsdev_nospc) { 7270 if (++i > nfsrv_devidcnt) 7271 break; 7272 *tdvpp++ = ds->nfsdev_dvp; 7273 NFSBCOPY(ds->nfsdev_deviceid, tdevid, NFSX_V4DEVICEID); 7274 tdevid += NFSX_V4DEVICEID; 7275 } 7276 } 7277 NFSDDSUNLOCK(); 7278 7279 /* Do a VFS_STATFS() for each of the DSs and clear no space. */ 7280 cnt = i; 7281 tdvpp = dvpp; 7282 tdevid = devid; 7283 for (i = 0; i < cnt && error == 0; i++) { 7284 dvp = *tdvpp++; 7285 error = VFS_STATFS(dvp->v_mount, tsf); 7286 if (error == 0 && tsf->f_bavail > 0) { 7287 NFSD_DEBUG(1, "nfsrv_checknospc: reset nospc\n"); 7288 nfsrv_marknospc(tdevid, false); 7289 } 7290 tdevid += NFSX_V4DEVICEID; 7291 } 7292 free(tsf, M_TEMP); 7293 free(dvpp, M_TEMP); 7294 free(devid, M_TEMP); 7295 } 7296 7297 /* 7298 * Initialize everything that needs to be initialized for a vnet. 7299 */ 7300 static void 7301 nfsrv_vnetinit(const void *unused __unused) 7302 { 7303 7304 nfsd_mntinit(); 7305 } 7306 VNET_SYSINIT(nfsrv_vnetinit, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7307 nfsrv_vnetinit, NULL); 7308 7309 /* 7310 * Clean up everything that is in a vnet and needs to be 7311 * done when the jail is destroyed or the module unloaded. 7312 */ 7313 static void 7314 nfsrv_cleanup(const void *unused __unused) 7315 { 7316 int i; 7317 7318 NFSD_LOCK(); 7319 if (!NFSD_VNET(nfsrv_mntinited)) { 7320 NFSD_UNLOCK(); 7321 return; 7322 } 7323 NFSD_VNET(nfsrv_mntinited) = false; 7324 NFSD_UNLOCK(); 7325 7326 /* Clean out all NFSv4 state. */ 7327 nfsrv_throwawayallstate(curthread); 7328 7329 /* Clean the NFS server reply cache */ 7330 nfsrvd_cleancache(); 7331 7332 /* Clean out v4root exports. */ 7333 if (NFSD_VNET(nfsv4root_mnt)->mnt_export != NULL) { 7334 vfs_free_addrlist(NFSD_VNET(nfsv4root_mnt)->mnt_export); 7335 free(NFSD_VNET(nfsv4root_mnt)->mnt_export, M_MOUNT); 7336 NFSD_VNET(nfsv4root_mnt)->mnt_export = NULL; 7337 } 7338 7339 /* Free up the krpc server pool. */ 7340 if (NFSD_VNET(nfsrvd_pool) != NULL) 7341 svcpool_destroy(NFSD_VNET(nfsrvd_pool)); 7342 7343 /* and get rid of the locks */ 7344 for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 7345 mtx_destroy(&NFSD_VNET(nfsrchash_table)[i].mtx); 7346 mtx_destroy(&NFSD_VNET(nfsrcahash_table)[i].mtx); 7347 } 7348 mtx_destroy(&NFSD_VNET(nfsv4root_mnt)->mnt_mtx); 7349 for (i = 0; i < nfsrv_sessionhashsize; i++) 7350 mtx_destroy(&NFSD_VNET(nfssessionhash)[i].mtx); 7351 lockdestroy(&NFSD_VNET(nfsv4root_mnt)->mnt_explock); 7352 free(NFSD_VNET(nfsrvudphashtbl), M_NFSRVCACHE); 7353 free(NFSD_VNET(nfsrchash_table), M_NFSRVCACHE); 7354 free(NFSD_VNET(nfsrcahash_table), M_NFSRVCACHE); 7355 free(NFSD_VNET(nfsclienthash), M_NFSDCLIENT); 7356 free(NFSD_VNET(nfslockhash), M_NFSDLOCKFILE); 7357 free(NFSD_VNET(nfssessionhash), M_NFSDSESSION); 7358 free(NFSD_VNET(nfsv4root_mnt), M_TEMP); 7359 NFSD_VNET(nfsv4root_mnt) = NULL; 7360 } 7361 VNET_SYSUNINIT(nfsrv_cleanup, SI_SUB_VNET_DONE, SI_ORDER_ANY, 7362 nfsrv_cleanup, NULL); 7363 7364 extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 7365 7366 /* 7367 * Called once to initialize data structures... 7368 */ 7369 static int 7370 nfsd_modevent(module_t mod, int type, void *data) 7371 { 7372 int error = 0, i; 7373 static int loaded = 0; 7374 7375 switch (type) { 7376 case MOD_LOAD: 7377 if (loaded) 7378 goto out; 7379 newnfs_portinit(); 7380 mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); 7381 mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); 7382 mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF); 7383 mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF); 7384 #ifdef VV_DISABLEDELEG 7385 vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 7386 vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 7387 #endif 7388 nfsd_call_nfsd = nfssvc_nfsd; 7389 loaded = 1; 7390 break; 7391 7392 case MOD_UNLOAD: 7393 if (newnfs_numnfsd != 0) { 7394 error = EBUSY; 7395 break; 7396 } 7397 7398 #ifdef VV_DISABLEDELEG 7399 vn_deleg_ops.vndeleg_recall = NULL; 7400 vn_deleg_ops.vndeleg_disable = NULL; 7401 #endif 7402 nfsd_call_nfsd = NULL; 7403 mtx_destroy(&nfsrc_udpmtx); 7404 mtx_destroy(&nfs_v4root_mutex); 7405 mtx_destroy(&nfsrv_dontlistlock_mtx); 7406 mtx_destroy(&nfsrv_recalllock_mtx); 7407 if (nfslayouthash != NULL) { 7408 for (i = 0; i < nfsrv_layouthashsize; i++) 7409 mtx_destroy(&nfslayouthash[i].mtx); 7410 free(nfslayouthash, M_NFSDSESSION); 7411 } 7412 loaded = 0; 7413 break; 7414 default: 7415 error = EOPNOTSUPP; 7416 break; 7417 } 7418 7419 out: 7420 NFSEXITCODE(error); 7421 return (error); 7422 } 7423 static moduledata_t nfsd_mod = { 7424 "nfsd", 7425 nfsd_modevent, 7426 NULL, 7427 }; 7428 DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 7429 7430 /* So that loader and kldload(2) can find us, wherever we are.. */ 7431 MODULE_VERSION(nfsd, 1); 7432 MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 7433 MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 7434 MODULE_DEPEND(nfsd, krpc, 1, 1, 1); 7435 MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 7436