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sys/fs/nfsclient/nfs_clport.c
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1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_inet6.h" 38 #include "opt_kdtrace.h" 39 40 #include <sys/capability.h> 41 42 /* 43 * generally, I don't like #includes inside .h files, but it seems to 44 * be the easiest way to handle the port. 45 */ 46 #include <sys/hash.h> 47 #include <fs/nfs/nfsport.h> 48 #include <netinet/if_ether.h> 49 #include <net/if_types.h> 50 51 #include <fs/nfsclient/nfs_kdtrace.h> 52 53 #ifdef KDTRACE_HOOKS 54 dtrace_nfsclient_attrcache_flush_probe_func_t 55 dtrace_nfscl_attrcache_flush_done_probe; 56 uint32_t nfscl_attrcache_flush_done_id; 57 58 dtrace_nfsclient_attrcache_get_hit_probe_func_t 59 dtrace_nfscl_attrcache_get_hit_probe; 60 uint32_t nfscl_attrcache_get_hit_id; 61 62 dtrace_nfsclient_attrcache_get_miss_probe_func_t 63 dtrace_nfscl_attrcache_get_miss_probe; 64 uint32_t nfscl_attrcache_get_miss_id; 65 66 dtrace_nfsclient_attrcache_load_probe_func_t 67 dtrace_nfscl_attrcache_load_done_probe; 68 uint32_t nfscl_attrcache_load_done_id; 69 #endif /* !KDTRACE_HOOKS */ 70 71 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 72 extern struct vop_vector newnfs_vnodeops; 73 extern struct vop_vector newnfs_fifoops; 74 extern uma_zone_t newnfsnode_zone; 75 extern struct buf_ops buf_ops_newnfs; 76 extern int ncl_pbuf_freecnt; 77 extern short nfsv4_cbport; 78 extern int nfscl_enablecallb; 79 extern int nfs_numnfscbd; 80 extern int nfscl_inited; 81 struct mtx nfs_clstate_mutex; 82 struct mtx ncl_iod_mutex; 83 NFSDLOCKMUTEX; 84 85 extern void (*ncl_call_invalcaches)(struct vnode *); 86 87 /* 88 * Comparison function for vfs_hash functions. 89 */ 90 int 91 newnfs_vncmpf(struct vnode *vp, void *arg) 92 { 93 struct nfsfh *nfhp = (struct nfsfh *)arg; 94 struct nfsnode *np = VTONFS(vp); 95 96 if (np->n_fhp->nfh_len != nfhp->nfh_len || 97 NFSBCMP(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len)) 98 return (1); 99 return (0); 100 } 101 102 /* 103 * Look up a vnode/nfsnode by file handle. 104 * Callers must check for mount points!! 105 * In all cases, a pointer to a 106 * nfsnode structure is returned. 107 * This variant takes a "struct nfsfh *" as second argument and uses 108 * that structure up, either by hanging off the nfsnode or FREEing it. 109 */ 110 int 111 nfscl_nget(struct mount *mntp, struct vnode *dvp, struct nfsfh *nfhp, 112 struct componentname *cnp, struct thread *td, struct nfsnode **npp, 113 void *stuff, int lkflags) 114 { 115 struct nfsnode *np, *dnp; 116 struct vnode *vp, *nvp; 117 struct nfsv4node *newd, *oldd; 118 int error; 119 u_int hash; 120 struct nfsmount *nmp; 121 122 nmp = VFSTONFS(mntp); 123 dnp = VTONFS(dvp); 124 *npp = NULL; 125 126 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len, FNV1_32_INIT); 127 128 error = vfs_hash_get(mntp, hash, lkflags, 129 td, &nvp, newnfs_vncmpf, nfhp); 130 if (error == 0 && nvp != NULL) { 131 /* 132 * I believe there is a slight chance that vgonel() could 133 * get called on this vnode between when NFSVOPLOCK() drops 134 * the VI_LOCK() and vget() acquires it again, so that it 135 * hasn't yet had v_usecount incremented. If this were to 136 * happen, the VI_DOOMED flag would be set, so check for 137 * that here. Since we now have the v_usecount incremented, 138 * we should be ok until we vrele() it, if the VI_DOOMED 139 * flag isn't set now. 140 */ 141 VI_LOCK(nvp); 142 if ((nvp->v_iflag & VI_DOOMED)) { 143 VI_UNLOCK(nvp); 144 vrele(nvp); 145 error = ENOENT; 146 } else { 147 VI_UNLOCK(nvp); 148 } 149 } 150 if (error) { 151 FREE((caddr_t)nfhp, M_NFSFH); 152 return (error); 153 } 154 if (nvp != NULL) { 155 np = VTONFS(nvp); 156 /* 157 * For NFSv4, check to see if it is the same name and 158 * replace the name, if it is different. 159 */ 160 oldd = newd = NULL; 161 if ((nmp->nm_flag & NFSMNT_NFSV4) && np->n_v4 != NULL && 162 nvp->v_type == VREG && 163 (np->n_v4->n4_namelen != cnp->cn_namelen || 164 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 165 cnp->cn_namelen) || 166 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen || 167 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 168 dnp->n_fhp->nfh_len))) { 169 MALLOC(newd, struct nfsv4node *, 170 sizeof (struct nfsv4node) + dnp->n_fhp->nfh_len + 171 + cnp->cn_namelen - 1, M_NFSV4NODE, M_WAITOK); 172 NFSLOCKNODE(np); 173 if (newd != NULL && np->n_v4 != NULL && nvp->v_type == VREG 174 && (np->n_v4->n4_namelen != cnp->cn_namelen || 175 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 176 cnp->cn_namelen) || 177 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen || 178 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 179 dnp->n_fhp->nfh_len))) { 180 oldd = np->n_v4; 181 np->n_v4 = newd; 182 newd = NULL; 183 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len; 184 np->n_v4->n4_namelen = cnp->cn_namelen; 185 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 186 dnp->n_fhp->nfh_len); 187 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 188 cnp->cn_namelen); 189 } 190 NFSUNLOCKNODE(np); 191 } 192 if (newd != NULL) 193 FREE((caddr_t)newd, M_NFSV4NODE); 194 if (oldd != NULL) 195 FREE((caddr_t)oldd, M_NFSV4NODE); 196 *npp = np; 197 FREE((caddr_t)nfhp, M_NFSFH); 198 return (0); 199 } 200 201 /* 202 * Allocate before getnewvnode since doing so afterward 203 * might cause a bogus v_data pointer to get dereferenced 204 * elsewhere if zalloc should block. 205 */ 206 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO); 207 208 error = getnewvnode("newnfs", mntp, &newnfs_vnodeops, &nvp); 209 if (error) { 210 uma_zfree(newnfsnode_zone, np); 211 FREE((caddr_t)nfhp, M_NFSFH); 212 return (error); 213 } 214 vp = nvp; 215 KASSERT(vp->v_bufobj.bo_bsize != 0, ("nfscl_nget: bo_bsize == 0")); 216 vp->v_bufobj.bo_ops = &buf_ops_newnfs; 217 vp->v_data = np; 218 np->n_vnode = vp; 219 /* 220 * Initialize the mutex even if the vnode is going to be a loser. 221 * This simplifies the logic in reclaim, which can then unconditionally 222 * destroy the mutex (in the case of the loser, or if hash_insert 223 * happened to return an error no special casing is needed). 224 */ 225 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK); 226 227 /* 228 * Are we getting the root? If so, make sure the vnode flags 229 * are correct 230 */ 231 if ((nfhp->nfh_len == nmp->nm_fhsize) && 232 !bcmp(nfhp->nfh_fh, nmp->nm_fh, nfhp->nfh_len)) { 233 if (vp->v_type == VNON) 234 vp->v_type = VDIR; 235 vp->v_vflag |= VV_ROOT; 236 } 237 238 np->n_fhp = nfhp; 239 /* 240 * For NFSv4, we have to attach the directory file handle and 241 * file name, so that Open Ops can be done later. 242 */ 243 if (nmp->nm_flag & NFSMNT_NFSV4) { 244 MALLOC(np->n_v4, struct nfsv4node *, sizeof (struct nfsv4node) 245 + dnp->n_fhp->nfh_len + cnp->cn_namelen - 1, M_NFSV4NODE, 246 M_WAITOK); 247 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len; 248 np->n_v4->n4_namelen = cnp->cn_namelen; 249 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 250 dnp->n_fhp->nfh_len); 251 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 252 cnp->cn_namelen); 253 } else { 254 np->n_v4 = NULL; 255 } 256 257 /* 258 * NFS supports recursive and shared locking. 259 */ 260 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL); 261 VN_LOCK_AREC(vp); 262 VN_LOCK_ASHARE(vp); 263 error = insmntque(vp, mntp); 264 if (error != 0) { 265 *npp = NULL; 266 mtx_destroy(&np->n_mtx); 267 FREE((caddr_t)nfhp, M_NFSFH); 268 if (np->n_v4 != NULL) 269 FREE((caddr_t)np->n_v4, M_NFSV4NODE); 270 uma_zfree(newnfsnode_zone, np); 271 return (error); 272 } 273 error = vfs_hash_insert(vp, hash, lkflags, 274 td, &nvp, newnfs_vncmpf, nfhp); 275 if (error) 276 return (error); 277 if (nvp != NULL) { 278 *npp = VTONFS(nvp); 279 /* vfs_hash_insert() vput()'s the losing vnode */ 280 return (0); 281 } 282 *npp = np; 283 284 return (0); 285 } 286 287 /* 288 * Anothe variant of nfs_nget(). This one is only used by reopen. It 289 * takes almost the same args as nfs_nget(), but only succeeds if an entry 290 * exists in the cache. (Since files should already be "open" with a 291 * vnode ref cnt on the node when reopen calls this, it should always 292 * succeed.) 293 * Also, don't get a vnode lock, since it may already be locked by some 294 * other process that is handling it. This is ok, since all other threads 295 * on the client are blocked by the nfsc_lock being exclusively held by the 296 * caller of this function. 297 */ 298 int 299 nfscl_ngetreopen(struct mount *mntp, u_int8_t *fhp, int fhsize, 300 struct thread *td, struct nfsnode **npp) 301 { 302 struct vnode *nvp; 303 u_int hash; 304 struct nfsfh *nfhp; 305 int error; 306 307 *npp = NULL; 308 /* For forced dismounts, just return error. */ 309 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 310 return (EINTR); 311 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize, 312 M_NFSFH, M_WAITOK); 313 bcopy(fhp, &nfhp->nfh_fh[0], fhsize); 314 nfhp->nfh_len = fhsize; 315 316 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT); 317 318 /* 319 * First, try to get the vnode locked, but don't block for the lock. 320 */ 321 error = vfs_hash_get(mntp, hash, (LK_EXCLUSIVE | LK_NOWAIT), td, &nvp, 322 newnfs_vncmpf, nfhp); 323 if (error == 0 && nvp != NULL) { 324 NFSVOPUNLOCK(nvp, 0); 325 } else if (error == EBUSY) { 326 /* 327 * The LK_EXCLOTHER lock type tells nfs_lock1() to not try 328 * and lock the vnode, but just get a v_usecount on it. 329 * LK_NOWAIT is set so that when vget() returns ENOENT, 330 * vfs_hash_get() fails instead of looping. 331 * If this succeeds, it is safe so long as a vflush() with 332 * FORCECLOSE has not been done. Since the Renew thread is 333 * stopped and the MNTK_UNMOUNTF flag is set before doing 334 * a vflush() with FORCECLOSE, we should be ok here. 335 */ 336 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 337 error = EINTR; 338 else 339 error = vfs_hash_get(mntp, hash, 340 (LK_EXCLOTHER | LK_NOWAIT), td, &nvp, 341 newnfs_vncmpf, nfhp); 342 } 343 FREE(nfhp, M_NFSFH); 344 if (error) 345 return (error); 346 if (nvp != NULL) { 347 *npp = VTONFS(nvp); 348 return (0); 349 } 350 return (EINVAL); 351 } 352 353 /* 354 * Load the attribute cache (that lives in the nfsnode entry) with 355 * the attributes of the second argument and 356 * Iff vaper not NULL 357 * copy the attributes to *vaper 358 * Similar to nfs_loadattrcache(), except the attributes are passed in 359 * instead of being parsed out of the mbuf list. 360 */ 361 int 362 nfscl_loadattrcache(struct vnode **vpp, struct nfsvattr *nap, void *nvaper, 363 void *stuff, int writeattr, int dontshrink) 364 { 365 struct vnode *vp = *vpp; 366 struct vattr *vap, *nvap = &nap->na_vattr, *vaper = nvaper; 367 struct nfsnode *np; 368 struct nfsmount *nmp; 369 struct timespec mtime_save; 370 u_quad_t nsize; 371 int setnsize; 372 373 /* 374 * If v_type == VNON it is a new node, so fill in the v_type, 375 * n_mtime fields. Check to see if it represents a special 376 * device, and if so, check for a possible alias. Once the 377 * correct vnode has been obtained, fill in the rest of the 378 * information. 379 */ 380 np = VTONFS(vp); 381 NFSLOCKNODE(np); 382 if (vp->v_type != nvap->va_type) { 383 vp->v_type = nvap->va_type; 384 if (vp->v_type == VFIFO) 385 vp->v_op = &newnfs_fifoops; 386 np->n_mtime = nvap->va_mtime; 387 } 388 nmp = VFSTONFS(vp->v_mount); 389 vap = &np->n_vattr.na_vattr; 390 mtime_save = vap->va_mtime; 391 if (writeattr) { 392 np->n_vattr.na_filerev = nap->na_filerev; 393 np->n_vattr.na_size = nap->na_size; 394 np->n_vattr.na_mtime = nap->na_mtime; 395 np->n_vattr.na_ctime = nap->na_ctime; 396 np->n_vattr.na_fsid = nap->na_fsid; 397 np->n_vattr.na_mode = nap->na_mode; 398 } else { 399 NFSBCOPY((caddr_t)nap, (caddr_t)&np->n_vattr, 400 sizeof (struct nfsvattr)); 401 } 402 403 /* 404 * For NFSv4, if the node's fsid is not equal to the mount point's 405 * fsid, return the low order 32bits of the node's fsid. This 406 * allows getcwd(3) to work. There is a chance that the fsid might 407 * be the same as a local fs, but since this is in an NFS mount 408 * point, I don't think that will cause any problems? 409 */ 410 if (NFSHASNFSV4(nmp) && NFSHASHASSETFSID(nmp) && 411 (nmp->nm_fsid[0] != np->n_vattr.na_filesid[0] || 412 nmp->nm_fsid[1] != np->n_vattr.na_filesid[1])) { 413 /* 414 * va_fsid needs to be set to some value derived from 415 * np->n_vattr.na_filesid that is not equal 416 * vp->v_mount->mnt_stat.f_fsid[0], so that it changes 417 * from the value used for the top level server volume 418 * in the mounted subtree. 419 */ 420 if (vp->v_mount->mnt_stat.f_fsid.val[0] != 421 (uint32_t)np->n_vattr.na_filesid[0]) 422 vap->va_fsid = (uint32_t)np->n_vattr.na_filesid[0]; 423 else 424 vap->va_fsid = (uint32_t)hash32_buf( 425 np->n_vattr.na_filesid, 2 * sizeof(uint64_t), 0); 426 } else 427 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 428 np->n_attrstamp = time_second; 429 setnsize = 0; 430 nsize = 0; 431 if (vap->va_size != np->n_size) { 432 if (vap->va_type == VREG) { 433 if (dontshrink && vap->va_size < np->n_size) { 434 /* 435 * We've been told not to shrink the file; 436 * zero np->n_attrstamp to indicate that 437 * the attributes are stale. 438 */ 439 vap->va_size = np->n_size; 440 np->n_attrstamp = 0; 441 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 442 vnode_pager_setsize(vp, np->n_size); 443 } else if (np->n_flag & NMODIFIED) { 444 /* 445 * We've modified the file: Use the larger 446 * of our size, and the server's size. 447 */ 448 if (vap->va_size < np->n_size) { 449 vap->va_size = np->n_size; 450 } else { 451 np->n_size = vap->va_size; 452 np->n_flag |= NSIZECHANGED; 453 } 454 vnode_pager_setsize(vp, np->n_size); 455 } else if (vap->va_size < np->n_size) { 456 /* 457 * When shrinking the size, the call to 458 * vnode_pager_setsize() cannot be done 459 * with the mutex held, so delay it until 460 * after the mtx_unlock call. 461 */ 462 nsize = np->n_size = vap->va_size; 463 np->n_flag |= NSIZECHANGED; 464 setnsize = 1; 465 } else { 466 np->n_size = vap->va_size; 467 np->n_flag |= NSIZECHANGED; 468 vnode_pager_setsize(vp, np->n_size); 469 } 470 } else { 471 np->n_size = vap->va_size; 472 } 473 } 474 /* 475 * The following checks are added to prevent a race between (say) 476 * a READDIR+ and a WRITE. 477 * READDIR+, WRITE requests sent out. 478 * READDIR+ resp, WRITE resp received on client. 479 * However, the WRITE resp was handled before the READDIR+ resp 480 * causing the post op attrs from the write to be loaded first 481 * and the attrs from the READDIR+ to be loaded later. If this 482 * happens, we have stale attrs loaded into the attrcache. 483 * We detect this by for the mtime moving back. We invalidate the 484 * attrcache when this happens. 485 */ 486 if (timespeccmp(&mtime_save, &vap->va_mtime, >)) { 487 /* Size changed or mtime went backwards */ 488 np->n_attrstamp = 0; 489 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 490 } 491 if (vaper != NULL) { 492 NFSBCOPY((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 493 if (np->n_flag & NCHG) { 494 if (np->n_flag & NACC) 495 vaper->va_atime = np->n_atim; 496 if (np->n_flag & NUPD) 497 vaper->va_mtime = np->n_mtim; 498 } 499 } 500 #ifdef KDTRACE_HOOKS 501 if (np->n_attrstamp != 0) 502 KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, 0); 503 #endif 504 NFSUNLOCKNODE(np); 505 if (setnsize) 506 vnode_pager_setsize(vp, nsize); 507 return (0); 508 } 509 510 /* 511 * Fill in the client id name. For these bytes: 512 * 1 - they must be unique 513 * 2 - they should be persistent across client reboots 514 * 1 is more critical than 2 515 * Use the mount point's unique id plus either the uuid or, if that 516 * isn't set, random junk. 517 */ 518 void 519 nfscl_fillclid(u_int64_t clval, char *uuid, u_int8_t *cp, u_int16_t idlen) 520 { 521 int uuidlen; 522 523 /* 524 * First, put in the 64bit mount point identifier. 525 */ 526 if (idlen >= sizeof (u_int64_t)) { 527 NFSBCOPY((caddr_t)&clval, cp, sizeof (u_int64_t)); 528 cp += sizeof (u_int64_t); 529 idlen -= sizeof (u_int64_t); 530 } 531 532 /* 533 * If uuid is non-zero length, use it. 534 */ 535 uuidlen = strlen(uuid); 536 if (uuidlen > 0 && idlen >= uuidlen) { 537 NFSBCOPY(uuid, cp, uuidlen); 538 cp += uuidlen; 539 idlen -= uuidlen; 540 } 541 542 /* 543 * This only normally happens if the uuid isn't set. 544 */ 545 while (idlen > 0) { 546 *cp++ = (u_int8_t)(arc4random() % 256); 547 idlen--; 548 } 549 } 550 551 /* 552 * Fill in a lock owner name. For now, pid + the process's creation time. 553 */ 554 void 555 nfscl_filllockowner(void *id, u_int8_t *cp, int flags) 556 { 557 union { 558 u_int32_t lval; 559 u_int8_t cval[4]; 560 } tl; 561 struct proc *p; 562 563 if (id == NULL) { 564 printf("NULL id\n"); 565 bzero(cp, NFSV4CL_LOCKNAMELEN); 566 return; 567 } 568 if ((flags & F_POSIX) != 0) { 569 p = (struct proc *)id; 570 tl.lval = p->p_pid; 571 *cp++ = tl.cval[0]; 572 *cp++ = tl.cval[1]; 573 *cp++ = tl.cval[2]; 574 *cp++ = tl.cval[3]; 575 tl.lval = p->p_stats->p_start.tv_sec; 576 *cp++ = tl.cval[0]; 577 *cp++ = tl.cval[1]; 578 *cp++ = tl.cval[2]; 579 *cp++ = tl.cval[3]; 580 tl.lval = p->p_stats->p_start.tv_usec; 581 *cp++ = tl.cval[0]; 582 *cp++ = tl.cval[1]; 583 *cp++ = tl.cval[2]; 584 *cp = tl.cval[3]; 585 } else if ((flags & F_FLOCK) != 0) { 586 bcopy(&id, cp, sizeof(id)); 587 bzero(&cp[sizeof(id)], NFSV4CL_LOCKNAMELEN - sizeof(id)); 588 } else { 589 printf("nfscl_filllockowner: not F_POSIX or F_FLOCK\n"); 590 bzero(cp, NFSV4CL_LOCKNAMELEN); 591 } 592 } 593 594 /* 595 * Find the parent process for the thread passed in as an argument. 596 * If none exists, return NULL, otherwise return a thread for the parent. 597 * (Can be any of the threads, since it is only used for td->td_proc.) 598 */ 599 NFSPROC_T * 600 nfscl_getparent(struct thread *td) 601 { 602 struct proc *p; 603 struct thread *ptd; 604 605 if (td == NULL) 606 return (NULL); 607 p = td->td_proc; 608 if (p->p_pid == 0) 609 return (NULL); 610 p = p->p_pptr; 611 if (p == NULL) 612 return (NULL); 613 ptd = TAILQ_FIRST(&p->p_threads); 614 return (ptd); 615 } 616 617 /* 618 * Start up the renew kernel thread. 619 */ 620 static void 621 start_nfscl(void *arg) 622 { 623 struct nfsclclient *clp; 624 struct thread *td; 625 626 clp = (struct nfsclclient *)arg; 627 td = TAILQ_FIRST(&clp->nfsc_renewthread->p_threads); 628 nfscl_renewthread(clp, td); 629 kproc_exit(0); 630 } 631 632 void 633 nfscl_start_renewthread(struct nfsclclient *clp) 634 { 635 636 kproc_create(start_nfscl, (void *)clp, &clp->nfsc_renewthread, 0, 0, 637 "nfscl"); 638 } 639 640 /* 641 * Handle wcc_data. 642 * For NFSv4, it assumes that nfsv4_wccattr() was used to set up the getattr 643 * as the first Op after PutFH. 644 * (For NFSv4, the postop attributes are after the Op, so they can't be 645 * parsed here. A separate call to nfscl_postop_attr() is required.) 646 */ 647 int 648 nfscl_wcc_data(struct nfsrv_descript *nd, struct vnode *vp, 649 struct nfsvattr *nap, int *flagp, int *wccflagp, void *stuff) 650 { 651 u_int32_t *tl; 652 struct nfsnode *np = VTONFS(vp); 653 struct nfsvattr nfsva; 654 int error = 0; 655 656 if (wccflagp != NULL) 657 *wccflagp = 0; 658 if (nd->nd_flag & ND_NFSV3) { 659 *flagp = 0; 660 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 661 if (*tl == newnfs_true) { 662 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 663 if (wccflagp != NULL) { 664 mtx_lock(&np->n_mtx); 665 *wccflagp = (np->n_mtime.tv_sec == 666 fxdr_unsigned(u_int32_t, *(tl + 2)) && 667 np->n_mtime.tv_nsec == 668 fxdr_unsigned(u_int32_t, *(tl + 3))); 669 mtx_unlock(&np->n_mtx); 670 } 671 } 672 error = nfscl_postop_attr(nd, nap, flagp, stuff); 673 } else if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) 674 == (ND_NFSV4 | ND_V4WCCATTR)) { 675 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 676 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 677 NULL, NULL, NULL, NULL, NULL); 678 if (error) 679 return (error); 680 /* 681 * Get rid of Op# and status for next op. 682 */ 683 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 684 if (*++tl) 685 nd->nd_flag |= ND_NOMOREDATA; 686 if (wccflagp != NULL && 687 nfsva.na_vattr.va_mtime.tv_sec != 0) { 688 mtx_lock(&np->n_mtx); 689 *wccflagp = (np->n_mtime.tv_sec == 690 nfsva.na_vattr.va_mtime.tv_sec && 691 np->n_mtime.tv_nsec == 692 nfsva.na_vattr.va_mtime.tv_sec); 693 mtx_unlock(&np->n_mtx); 694 } 695 } 696 nfsmout: 697 return (error); 698 } 699 700 /* 701 * Get postop attributes. 702 */ 703 int 704 nfscl_postop_attr(struct nfsrv_descript *nd, struct nfsvattr *nap, int *retp, 705 void *stuff) 706 { 707 u_int32_t *tl; 708 int error = 0; 709 710 *retp = 0; 711 if (nd->nd_flag & ND_NOMOREDATA) 712 return (error); 713 if (nd->nd_flag & ND_NFSV3) { 714 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 715 *retp = fxdr_unsigned(int, *tl); 716 } else if (nd->nd_flag & ND_NFSV4) { 717 /* 718 * For NFSv4, the postop attr are at the end, so no point 719 * in looking if nd_repstat != 0. 720 */ 721 if (!nd->nd_repstat) { 722 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 723 if (*(tl + 1)) 724 /* should never happen since nd_repstat != 0 */ 725 nd->nd_flag |= ND_NOMOREDATA; 726 else 727 *retp = 1; 728 } 729 } else if (!nd->nd_repstat) { 730 /* For NFSv2, the attributes are here iff nd_repstat == 0 */ 731 *retp = 1; 732 } 733 if (*retp) { 734 error = nfsm_loadattr(nd, nap); 735 if (error) 736 *retp = 0; 737 } 738 nfsmout: 739 return (error); 740 } 741 742 /* 743 * Fill in the setable attributes. The full argument indicates whether 744 * to fill in them all or just mode and time. 745 */ 746 void 747 nfscl_fillsattr(struct nfsrv_descript *nd, struct vattr *vap, 748 struct vnode *vp, int flags, u_int32_t rdev) 749 { 750 u_int32_t *tl; 751 struct nfsv2_sattr *sp; 752 nfsattrbit_t attrbits; 753 754 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 755 case ND_NFSV2: 756 NFSM_BUILD(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 757 if (vap->va_mode == (mode_t)VNOVAL) 758 sp->sa_mode = newnfs_xdrneg1; 759 else 760 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 761 if (vap->va_uid == (uid_t)VNOVAL) 762 sp->sa_uid = newnfs_xdrneg1; 763 else 764 sp->sa_uid = txdr_unsigned(vap->va_uid); 765 if (vap->va_gid == (gid_t)VNOVAL) 766 sp->sa_gid = newnfs_xdrneg1; 767 else 768 sp->sa_gid = txdr_unsigned(vap->va_gid); 769 if (flags & NFSSATTR_SIZE0) 770 sp->sa_size = 0; 771 else if (flags & NFSSATTR_SIZENEG1) 772 sp->sa_size = newnfs_xdrneg1; 773 else if (flags & NFSSATTR_SIZERDEV) 774 sp->sa_size = txdr_unsigned(rdev); 775 else 776 sp->sa_size = txdr_unsigned(vap->va_size); 777 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 778 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 779 break; 780 case ND_NFSV3: 781 if (vap->va_mode != (mode_t)VNOVAL) { 782 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 783 *tl++ = newnfs_true; 784 *tl = txdr_unsigned(vap->va_mode); 785 } else { 786 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 787 *tl = newnfs_false; 788 } 789 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) { 790 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 791 *tl++ = newnfs_true; 792 *tl = txdr_unsigned(vap->va_uid); 793 } else { 794 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 795 *tl = newnfs_false; 796 } 797 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) { 798 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 799 *tl++ = newnfs_true; 800 *tl = txdr_unsigned(vap->va_gid); 801 } else { 802 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 803 *tl = newnfs_false; 804 } 805 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) { 806 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 807 *tl++ = newnfs_true; 808 txdr_hyper(vap->va_size, tl); 809 } else { 810 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 811 *tl = newnfs_false; 812 } 813 if (vap->va_atime.tv_sec != VNOVAL) { 814 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) { 815 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 816 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 817 txdr_nfsv3time(&vap->va_atime, tl); 818 } else { 819 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 820 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 821 } 822 } else { 823 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 824 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 825 } 826 if (vap->va_mtime.tv_sec != VNOVAL) { 827 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) { 828 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 829 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 830 txdr_nfsv3time(&vap->va_mtime, tl); 831 } else { 832 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 833 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 834 } 835 } else { 836 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 837 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 838 } 839 break; 840 case ND_NFSV4: 841 NFSZERO_ATTRBIT(&attrbits); 842 if (vap->va_mode != (mode_t)VNOVAL) 843 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_MODE); 844 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) 845 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNER); 846 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) 847 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNERGROUP); 848 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) 849 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 850 if (vap->va_atime.tv_sec != VNOVAL) 851 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESSSET); 852 if (vap->va_mtime.tv_sec != VNOVAL) 853 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFYSET); 854 (void) nfsv4_fillattr(nd, vp->v_mount, vp, NULL, vap, NULL, 0, 855 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 856 break; 857 }; 858 } 859 860 /* 861 * nfscl_request() - mostly a wrapper for newnfs_request(). 862 */ 863 int 864 nfscl_request(struct nfsrv_descript *nd, struct vnode *vp, NFSPROC_T *p, 865 struct ucred *cred, void *stuff) 866 { 867 int ret, vers; 868 struct nfsmount *nmp; 869 870 nmp = VFSTONFS(vp->v_mount); 871 if (nd->nd_flag & ND_NFSV4) 872 vers = NFS_VER4; 873 else if (nd->nd_flag & ND_NFSV3) 874 vers = NFS_VER3; 875 else 876 vers = NFS_VER2; 877 ret = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 878 NFS_PROG, vers, NULL, 1, NULL); 879 return (ret); 880 } 881 882 /* 883 * fill in this bsden's variant of statfs using nfsstatfs. 884 */ 885 void 886 nfscl_loadsbinfo(struct nfsmount *nmp, struct nfsstatfs *sfp, void *statfs) 887 { 888 struct statfs *sbp = (struct statfs *)statfs; 889 890 if (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) { 891 sbp->f_bsize = NFS_FABLKSIZE; 892 sbp->f_blocks = sfp->sf_tbytes / NFS_FABLKSIZE; 893 sbp->f_bfree = sfp->sf_fbytes / NFS_FABLKSIZE; 894 /* 895 * Although sf_abytes is uint64_t and f_bavail is int64_t, 896 * the value after dividing by NFS_FABLKSIZE is small 897 * enough that it will fit in 63bits, so it is ok to 898 * assign it to f_bavail without fear that it will become 899 * negative. 900 */ 901 sbp->f_bavail = sfp->sf_abytes / NFS_FABLKSIZE; 902 sbp->f_files = sfp->sf_tfiles; 903 /* Since f_ffree is int64_t, clip it to 63bits. */ 904 if (sfp->sf_ffiles > INT64_MAX) 905 sbp->f_ffree = INT64_MAX; 906 else 907 sbp->f_ffree = sfp->sf_ffiles; 908 } else if ((nmp->nm_flag & NFSMNT_NFSV4) == 0) { 909 /* 910 * The type casts to (int32_t) ensure that this code is 911 * compatible with the old NFS client, in that it will 912 * propagate bit31 to the high order bits. This may or may 913 * not be correct for NFSv2, but since it is a legacy 914 * environment, I'd rather retain backwards compatibility. 915 */ 916 sbp->f_bsize = (int32_t)sfp->sf_bsize; 917 sbp->f_blocks = (int32_t)sfp->sf_blocks; 918 sbp->f_bfree = (int32_t)sfp->sf_bfree; 919 sbp->f_bavail = (int32_t)sfp->sf_bavail; 920 sbp->f_files = 0; 921 sbp->f_ffree = 0; 922 } 923 } 924 925 /* 926 * Use the fsinfo stuff to update the mount point. 927 */ 928 void 929 nfscl_loadfsinfo(struct nfsmount *nmp, struct nfsfsinfo *fsp) 930 { 931 932 if ((nmp->nm_wsize == 0 || fsp->fs_wtpref < nmp->nm_wsize) && 933 fsp->fs_wtpref >= NFS_FABLKSIZE) 934 nmp->nm_wsize = (fsp->fs_wtpref + NFS_FABLKSIZE - 1) & 935 ~(NFS_FABLKSIZE - 1); 936 if (fsp->fs_wtmax < nmp->nm_wsize && fsp->fs_wtmax > 0) { 937 nmp->nm_wsize = fsp->fs_wtmax & ~(NFS_FABLKSIZE - 1); 938 if (nmp->nm_wsize == 0) 939 nmp->nm_wsize = fsp->fs_wtmax; 940 } 941 if (nmp->nm_wsize < NFS_FABLKSIZE) 942 nmp->nm_wsize = NFS_FABLKSIZE; 943 if ((nmp->nm_rsize == 0 || fsp->fs_rtpref < nmp->nm_rsize) && 944 fsp->fs_rtpref >= NFS_FABLKSIZE) 945 nmp->nm_rsize = (fsp->fs_rtpref + NFS_FABLKSIZE - 1) & 946 ~(NFS_FABLKSIZE - 1); 947 if (fsp->fs_rtmax < nmp->nm_rsize && fsp->fs_rtmax > 0) { 948 nmp->nm_rsize = fsp->fs_rtmax & ~(NFS_FABLKSIZE - 1); 949 if (nmp->nm_rsize == 0) 950 nmp->nm_rsize = fsp->fs_rtmax; 951 } 952 if (nmp->nm_rsize < NFS_FABLKSIZE) 953 nmp->nm_rsize = NFS_FABLKSIZE; 954 if ((nmp->nm_readdirsize == 0 || fsp->fs_dtpref < nmp->nm_readdirsize) 955 && fsp->fs_dtpref >= NFS_DIRBLKSIZ) 956 nmp->nm_readdirsize = (fsp->fs_dtpref + NFS_DIRBLKSIZ - 1) & 957 ~(NFS_DIRBLKSIZ - 1); 958 if (fsp->fs_rtmax < nmp->nm_readdirsize && fsp->fs_rtmax > 0) { 959 nmp->nm_readdirsize = fsp->fs_rtmax & ~(NFS_DIRBLKSIZ - 1); 960 if (nmp->nm_readdirsize == 0) 961 nmp->nm_readdirsize = fsp->fs_rtmax; 962 } 963 if (nmp->nm_readdirsize < NFS_DIRBLKSIZ) 964 nmp->nm_readdirsize = NFS_DIRBLKSIZ; 965 if (fsp->fs_maxfilesize > 0 && 966 fsp->fs_maxfilesize < nmp->nm_maxfilesize) 967 nmp->nm_maxfilesize = fsp->fs_maxfilesize; 968 nmp->nm_mountp->mnt_stat.f_iosize = newnfs_iosize(nmp); 969 nmp->nm_state |= NFSSTA_GOTFSINFO; 970 } 971 972 /* 973 * Get a pointer to my IP addrress and return it. 974 * Return NULL if you can't find one. 975 */ 976 u_int8_t * 977 nfscl_getmyip(struct nfsmount *nmp, int *isinet6p) 978 { 979 struct sockaddr_in sad, *sin; 980 struct rtentry *rt; 981 u_int8_t *retp = NULL; 982 static struct in_addr laddr; 983 984 *isinet6p = 0; 985 /* 986 * Loop up a route for the destination address. 987 */ 988 if (nmp->nm_nam->sa_family == AF_INET) { 989 bzero(&sad, sizeof (sad)); 990 sin = (struct sockaddr_in *)nmp->nm_nam; 991 sad.sin_family = AF_INET; 992 sad.sin_len = sizeof (struct sockaddr_in); 993 sad.sin_addr.s_addr = sin->sin_addr.s_addr; 994 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred)); 995 rt = rtalloc1_fib((struct sockaddr *)&sad, 0, 0UL, 996 curthread->td_proc->p_fibnum); 997 if (rt != NULL) { 998 if (rt->rt_ifp != NULL && 999 rt->rt_ifa != NULL && 1000 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 1001 rt->rt_ifa->ifa_addr->sa_family == AF_INET) { 1002 sin = (struct sockaddr_in *) 1003 rt->rt_ifa->ifa_addr; 1004 laddr.s_addr = sin->sin_addr.s_addr; 1005 retp = (u_int8_t *)&laddr; 1006 } 1007 RTFREE_LOCKED(rt); 1008 } 1009 CURVNET_RESTORE(); 1010 #ifdef INET6 1011 } else if (nmp->nm_nam->sa_family == AF_INET6) { 1012 struct sockaddr_in6 sad6, *sin6; 1013 static struct in6_addr laddr6; 1014 1015 bzero(&sad6, sizeof (sad6)); 1016 sin6 = (struct sockaddr_in6 *)nmp->nm_nam; 1017 sad6.sin6_family = AF_INET6; 1018 sad6.sin6_len = sizeof (struct sockaddr_in6); 1019 sad6.sin6_addr = sin6->sin6_addr; 1020 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred)); 1021 rt = rtalloc1_fib((struct sockaddr *)&sad6, 0, 0UL, 1022 curthread->td_proc->p_fibnum); 1023 if (rt != NULL) { 1024 if (rt->rt_ifp != NULL && 1025 rt->rt_ifa != NULL && 1026 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 1027 rt->rt_ifa->ifa_addr->sa_family == AF_INET6) { 1028 sin6 = (struct sockaddr_in6 *) 1029 rt->rt_ifa->ifa_addr; 1030 laddr6 = sin6->sin6_addr; 1031 retp = (u_int8_t *)&laddr6; 1032 *isinet6p = 1; 1033 } 1034 RTFREE_LOCKED(rt); 1035 } 1036 CURVNET_RESTORE(); 1037 #endif 1038 } 1039 return (retp); 1040 } 1041 1042 /* 1043 * Copy NFS uid, gids from the cred structure. 1044 */ 1045 void 1046 newnfs_copyincred(struct ucred *cr, struct nfscred *nfscr) 1047 { 1048 int i; 1049 1050 KASSERT(cr->cr_ngroups >= 0, 1051 ("newnfs_copyincred: negative cr_ngroups")); 1052 nfscr->nfsc_uid = cr->cr_uid; 1053 nfscr->nfsc_ngroups = MIN(cr->cr_ngroups, NFS_MAXGRPS + 1); 1054 for (i = 0; i < nfscr->nfsc_ngroups; i++) 1055 nfscr->nfsc_groups[i] = cr->cr_groups[i]; 1056 } 1057 1058 1059 /* 1060 * Do any client specific initialization. 1061 */ 1062 void 1063 nfscl_init(void) 1064 { 1065 static int inited = 0; 1066 1067 if (inited) 1068 return; 1069 inited = 1; 1070 nfscl_inited = 1; 1071 ncl_pbuf_freecnt = nswbuf / 2 + 1; 1072 } 1073 1074 /* 1075 * Check each of the attributes to be set, to ensure they aren't already 1076 * the correct value. Disable setting ones already correct. 1077 */ 1078 int 1079 nfscl_checksattr(struct vattr *vap, struct nfsvattr *nvap) 1080 { 1081 1082 if (vap->va_mode != (mode_t)VNOVAL) { 1083 if (vap->va_mode == nvap->na_mode) 1084 vap->va_mode = (mode_t)VNOVAL; 1085 } 1086 if (vap->va_uid != (uid_t)VNOVAL) { 1087 if (vap->va_uid == nvap->na_uid) 1088 vap->va_uid = (uid_t)VNOVAL; 1089 } 1090 if (vap->va_gid != (gid_t)VNOVAL) { 1091 if (vap->va_gid == nvap->na_gid) 1092 vap->va_gid = (gid_t)VNOVAL; 1093 } 1094 if (vap->va_size != VNOVAL) { 1095 if (vap->va_size == nvap->na_size) 1096 vap->va_size = VNOVAL; 1097 } 1098 1099 /* 1100 * We are normally called with only a partially initialized 1101 * VAP. Since the NFSv3 spec says that server may use the 1102 * file attributes to store the verifier, the spec requires 1103 * us to do a SETATTR RPC. FreeBSD servers store the verifier 1104 * in atime, but we can't really assume that all servers will 1105 * so we ensure that our SETATTR sets both atime and mtime. 1106 * Set the VA_UTIMES_NULL flag for this case, so that 1107 * the server's time will be used. This is needed to 1108 * work around a bug in some Solaris servers, where 1109 * setting the time TOCLIENT causes the Setattr RPC 1110 * to return NFS_OK, but not set va_mode. 1111 */ 1112 if (vap->va_mtime.tv_sec == VNOVAL) { 1113 vfs_timestamp(&vap->va_mtime); 1114 vap->va_vaflags |= VA_UTIMES_NULL; 1115 } 1116 if (vap->va_atime.tv_sec == VNOVAL) 1117 vap->va_atime = vap->va_mtime; 1118 return (1); 1119 } 1120 1121 /* 1122 * Map nfsv4 errors to errno.h errors. 1123 * The uid and gid arguments are only used for NFSERR_BADOWNER and that 1124 * error should only be returned for the Open, Create and Setattr Ops. 1125 * As such, most calls can just pass in 0 for those arguments. 1126 */ 1127 APPLESTATIC int 1128 nfscl_maperr(struct thread *td, int error, uid_t uid, gid_t gid) 1129 { 1130 struct proc *p; 1131 1132 if (error < 10000 || error >= NFSERR_STALEWRITEVERF) 1133 return (error); 1134 if (td != NULL) 1135 p = td->td_proc; 1136 else 1137 p = NULL; 1138 switch (error) { 1139 case NFSERR_BADOWNER: 1140 tprintf(p, LOG_INFO, 1141 "No name and/or group mapping for uid,gid:(%d,%d)\n", 1142 uid, gid); 1143 return (EPERM); 1144 case NFSERR_STALECLIENTID: 1145 case NFSERR_STALESTATEID: 1146 case NFSERR_EXPIRED: 1147 case NFSERR_BADSTATEID: 1148 printf("nfsv4 recover err returned %d\n", error); 1149 return (EIO); 1150 case NFSERR_BADHANDLE: 1151 case NFSERR_SERVERFAULT: 1152 case NFSERR_BADTYPE: 1153 case NFSERR_FHEXPIRED: 1154 case NFSERR_RESOURCE: 1155 case NFSERR_MOVED: 1156 case NFSERR_NOFILEHANDLE: 1157 case NFSERR_MINORVERMISMATCH: 1158 case NFSERR_OLDSTATEID: 1159 case NFSERR_BADSEQID: 1160 case NFSERR_LEASEMOVED: 1161 case NFSERR_RECLAIMBAD: 1162 case NFSERR_BADXDR: 1163 case NFSERR_BADCHAR: 1164 case NFSERR_BADNAME: 1165 case NFSERR_OPILLEGAL: 1166 printf("nfsv4 client/server protocol prob err=%d\n", 1167 error); 1168 return (EIO); 1169 default: 1170 tprintf(p, LOG_INFO, "nfsv4 err=%d\n", error); 1171 return (EIO); 1172 }; 1173 } 1174 1175 /* 1176 * Check to see if the process for this owner exists. Return 1 if it doesn't 1177 * and 0 otherwise. 1178 */ 1179 int 1180 nfscl_procdoesntexist(u_int8_t *own) 1181 { 1182 union { 1183 u_int32_t lval; 1184 u_int8_t cval[4]; 1185 } tl; 1186 struct proc *p; 1187 pid_t pid; 1188 int ret = 0; 1189 1190 tl.cval[0] = *own++; 1191 tl.cval[1] = *own++; 1192 tl.cval[2] = *own++; 1193 tl.cval[3] = *own++; 1194 pid = tl.lval; 1195 p = pfind_locked(pid); 1196 if (p == NULL) 1197 return (1); 1198 if (p->p_stats == NULL) { 1199 PROC_UNLOCK(p); 1200 return (0); 1201 } 1202 tl.cval[0] = *own++; 1203 tl.cval[1] = *own++; 1204 tl.cval[2] = *own++; 1205 tl.cval[3] = *own++; 1206 if (tl.lval != p->p_stats->p_start.tv_sec) { 1207 ret = 1; 1208 } else { 1209 tl.cval[0] = *own++; 1210 tl.cval[1] = *own++; 1211 tl.cval[2] = *own++; 1212 tl.cval[3] = *own; 1213 if (tl.lval != p->p_stats->p_start.tv_usec) 1214 ret = 1; 1215 } 1216 PROC_UNLOCK(p); 1217 return (ret); 1218 } 1219 1220 /* 1221 * - nfs pseudo system call for the client 1222 */ 1223 /* 1224 * MPSAFE 1225 */ 1226 static int 1227 nfssvc_nfscl(struct thread *td, struct nfssvc_args *uap) 1228 { 1229 struct file *fp; 1230 struct nfscbd_args nfscbdarg; 1231 struct nfsd_nfscbd_args nfscbdarg2; 1232 int error; 1233 struct nameidata nd; 1234 struct nfscl_dumpmntopts dumpmntopts; 1235 char *buf; 1236 1237 if (uap->flag & NFSSVC_CBADDSOCK) { 1238 error = copyin(uap->argp, (caddr_t)&nfscbdarg, sizeof(nfscbdarg)); 1239 if (error) 1240 return (error); 1241 /* 1242 * Since we don't know what rights might be required, 1243 * pretend that we need them all. It is better to be too 1244 * careful than too reckless. 1245 */ 1246 if ((error = fget(td, nfscbdarg.sock, CAP_SOCK_ALL, &fp)) 1247 != 0) { 1248 return (error); 1249 } 1250 if (fp->f_type != DTYPE_SOCKET) { 1251 fdrop(fp, td); 1252 return (EPERM); 1253 } 1254 error = nfscbd_addsock(fp); 1255 fdrop(fp, td); 1256 if (!error && nfscl_enablecallb == 0) { 1257 nfsv4_cbport = nfscbdarg.port; 1258 nfscl_enablecallb = 1; 1259 } 1260 } else if (uap->flag & NFSSVC_NFSCBD) { 1261 if (uap->argp == NULL) 1262 return (EINVAL); 1263 error = copyin(uap->argp, (caddr_t)&nfscbdarg2, 1264 sizeof(nfscbdarg2)); 1265 if (error) 1266 return (error); 1267 error = nfscbd_nfsd(td, &nfscbdarg2); 1268 } else if (uap->flag & NFSSVC_DUMPMNTOPTS) { 1269 error = copyin(uap->argp, &dumpmntopts, sizeof(dumpmntopts)); 1270 if (error == 0 && (dumpmntopts.ndmnt_blen < 256 || 1271 dumpmntopts.ndmnt_blen > 1024)) 1272 error = EINVAL; 1273 if (error == 0) 1274 error = nfsrv_lookupfilename(&nd, 1275 dumpmntopts.ndmnt_fname, td); 1276 if (error == 0 && strcmp(nd.ni_vp->v_mount->mnt_vfc->vfc_name, 1277 "nfs") != 0) { 1278 vput(nd.ni_vp); 1279 error = EINVAL; 1280 } 1281 if (error == 0) { 1282 buf = malloc(dumpmntopts.ndmnt_blen, M_TEMP, M_WAITOK); 1283 nfscl_retopts(VFSTONFS(nd.ni_vp->v_mount), buf, 1284 dumpmntopts.ndmnt_blen); 1285 vput(nd.ni_vp); 1286 error = copyout(buf, dumpmntopts.ndmnt_buf, 1287 dumpmntopts.ndmnt_blen); 1288 free(buf, M_TEMP); 1289 } 1290 } else { 1291 error = EINVAL; 1292 } 1293 return (error); 1294 } 1295 1296 extern int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *); 1297 1298 /* 1299 * Called once to initialize data structures... 1300 */ 1301 static int 1302 nfscl_modevent(module_t mod, int type, void *data) 1303 { 1304 int error = 0; 1305 static int loaded = 0; 1306 1307 switch (type) { 1308 case MOD_LOAD: 1309 if (loaded) 1310 return (0); 1311 newnfs_portinit(); 1312 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, 1313 MTX_DEF); 1314 mtx_init(&ncl_iod_mutex, "ncl_iod_mutex", NULL, MTX_DEF); 1315 nfscl_init(); 1316 NFSD_LOCK(); 1317 nfsrvd_cbinit(0); 1318 NFSD_UNLOCK(); 1319 ncl_call_invalcaches = ncl_invalcaches; 1320 nfsd_call_nfscl = nfssvc_nfscl; 1321 loaded = 1; 1322 break; 1323 1324 case MOD_UNLOAD: 1325 if (nfs_numnfscbd != 0) { 1326 error = EBUSY; 1327 break; 1328 } 1329 1330 /* 1331 * XXX: Unloading of nfscl module is unsupported. 1332 */ 1333 #if 0 1334 ncl_call_invalcaches = NULL; 1335 nfsd_call_nfscl = NULL; 1336 /* and get rid of the mutexes */ 1337 mtx_destroy(&nfs_clstate_mutex); 1338 mtx_destroy(&ncl_iod_mutex); 1339 loaded = 0; 1340 break; 1341 #else 1342 /* FALLTHROUGH */ 1343 #endif 1344 default: 1345 error = EOPNOTSUPP; 1346 break; 1347 } 1348 return error; 1349 } 1350 static moduledata_t nfscl_mod = { 1351 "nfscl", 1352 nfscl_modevent, 1353 NULL, 1354 }; 1355 DECLARE_MODULE(nfscl, nfscl_mod, SI_SUB_VFS, SI_ORDER_FIRST); 1356 1357 /* So that loader and kldload(2) can find us, wherever we are.. */ 1358 MODULE_VERSION(nfscl, 1); 1359 MODULE_DEPEND(nfscl, nfscommon, 1, 1, 1); 1360 MODULE_DEPEND(nfscl, krpc, 1, 1, 1); 1361 MODULE_DEPEND(nfscl, nfssvc, 1, 1, 1); 1362 MODULE_DEPEND(nfscl, nfslock, 1, 1, 1); 1363
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