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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: releng/8.1/sys/fs/nfsclient/nfs_clport.c 207085 2010-04-23 00:12:23Z rmacklem $"); 36 37 /* 38 * generally, I don't like #includes inside .h files, but it seems to 39 * be the easiest way to handle the port. 40 */ 41 #include <fs/nfs/nfsport.h> 42 #include <netinet/if_ether.h> 43 #include <net/if_types.h> 44 45 extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 46 extern struct vop_vector newnfs_vnodeops; 47 extern struct vop_vector newnfs_fifoops; 48 extern uma_zone_t newnfsnode_zone; 49 extern struct buf_ops buf_ops_newnfs; 50 extern int ncl_pbuf_freecnt; 51 extern short nfsv4_cbport; 52 extern int nfscl_enablecallb; 53 extern int nfs_numnfscbd; 54 extern int nfscl_inited; 55 struct mtx nfs_clstate_mutex; 56 struct mtx ncl_iod_mutex; 57 NFSDLOCKMUTEX; 58 59 extern void (*ncl_call_invalcaches)(struct vnode *); 60 61 /* 62 * Comparison function for vfs_hash functions. 63 */ 64 int 65 newnfs_vncmpf(struct vnode *vp, void *arg) 66 { 67 struct nfsfh *nfhp = (struct nfsfh *)arg; 68 struct nfsnode *np = VTONFS(vp); 69 70 if (np->n_fhp->nfh_len != nfhp->nfh_len || 71 NFSBCMP(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len)) 72 return (1); 73 return (0); 74 } 75 76 /* 77 * Look up a vnode/nfsnode by file handle. 78 * Callers must check for mount points!! 79 * In all cases, a pointer to a 80 * nfsnode structure is returned. 81 * This variant takes a "struct nfsfh *" as second argument and uses 82 * that structure up, either by hanging off the nfsnode or FREEing it. 83 */ 84 int 85 nfscl_nget(struct mount *mntp, struct vnode *dvp, struct nfsfh *nfhp, 86 struct componentname *cnp, struct thread *td, struct nfsnode **npp, 87 void *stuff) 88 { 89 struct nfsnode *np, *dnp; 90 struct vnode *vp, *nvp; 91 struct nfsv4node *newd, *oldd; 92 int error; 93 u_int hash; 94 struct nfsmount *nmp; 95 96 nmp = VFSTONFS(mntp); 97 dnp = VTONFS(dvp); 98 *npp = NULL; 99 100 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len, FNV1_32_INIT); 101 102 error = vfs_hash_get(mntp, hash, LK_EXCLUSIVE, 103 td, &nvp, newnfs_vncmpf, nfhp); 104 if (error == 0 && nvp != NULL) { 105 /* 106 * I believe there is a slight chance that vgonel() could 107 * get called on this vnode between when vn_lock() drops 108 * the VI_LOCK() and vget() acquires it again, so that it 109 * hasn't yet had v_usecount incremented. If this were to 110 * happen, the VI_DOOMED flag would be set, so check for 111 * that here. Since we now have the v_usecount incremented, 112 * we should be ok until we vrele() it, if the VI_DOOMED 113 * flag isn't set now. 114 */ 115 VI_LOCK(nvp); 116 if ((nvp->v_iflag & VI_DOOMED)) { 117 VI_UNLOCK(nvp); 118 vrele(nvp); 119 error = ENOENT; 120 } else { 121 VI_UNLOCK(nvp); 122 } 123 } 124 if (error) { 125 FREE((caddr_t)nfhp, M_NFSFH); 126 return (error); 127 } 128 if (nvp != NULL) { 129 np = VTONFS(nvp); 130 /* 131 * For NFSv4, check to see if it is the same name and 132 * replace the name, if it is different. 133 */ 134 oldd = newd = NULL; 135 if ((nmp->nm_flag & NFSMNT_NFSV4) && np->n_v4 != NULL && 136 nvp->v_type == VREG && 137 (np->n_v4->n4_namelen != cnp->cn_namelen || 138 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 139 cnp->cn_namelen) || 140 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen || 141 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 142 dnp->n_fhp->nfh_len))) { 143 MALLOC(newd, struct nfsv4node *, 144 sizeof (struct nfsv4node) + dnp->n_fhp->nfh_len + 145 + cnp->cn_namelen - 1, M_NFSV4NODE, M_WAITOK); 146 NFSLOCKNODE(np); 147 if (newd != NULL && np->n_v4 != NULL && nvp->v_type == VREG 148 && (np->n_v4->n4_namelen != cnp->cn_namelen || 149 NFSBCMP(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 150 cnp->cn_namelen) || 151 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen || 152 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 153 dnp->n_fhp->nfh_len))) { 154 oldd = np->n_v4; 155 np->n_v4 = newd; 156 newd = NULL; 157 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len; 158 np->n_v4->n4_namelen = cnp->cn_namelen; 159 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 160 dnp->n_fhp->nfh_len); 161 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 162 cnp->cn_namelen); 163 } 164 NFSUNLOCKNODE(np); 165 } 166 if (newd != NULL) 167 FREE((caddr_t)newd, M_NFSV4NODE); 168 if (oldd != NULL) 169 FREE((caddr_t)oldd, M_NFSV4NODE); 170 *npp = np; 171 FREE((caddr_t)nfhp, M_NFSFH); 172 return (0); 173 } 174 175 /* 176 * Allocate before getnewvnode since doing so afterward 177 * might cause a bogus v_data pointer to get dereferenced 178 * elsewhere if zalloc should block. 179 */ 180 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO); 181 182 error = getnewvnode("newnfs", mntp, &newnfs_vnodeops, &nvp); 183 if (error) { 184 uma_zfree(newnfsnode_zone, np); 185 FREE((caddr_t)nfhp, M_NFSFH); 186 return (error); 187 } 188 vp = nvp; 189 vp->v_bufobj.bo_ops = &buf_ops_newnfs; 190 vp->v_data = np; 191 np->n_vnode = vp; 192 /* 193 * Initialize the mutex even if the vnode is going to be a loser. 194 * This simplifies the logic in reclaim, which can then unconditionally 195 * destroy the mutex (in the case of the loser, or if hash_insert 196 * happened to return an error no special casing is needed). 197 */ 198 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK); 199 200 /* 201 * Are we getting the root? If so, make sure the vnode flags 202 * are correct 203 */ 204 if ((nfhp->nfh_len == nmp->nm_fhsize) && 205 !bcmp(nfhp->nfh_fh, nmp->nm_fh, nfhp->nfh_len)) { 206 if (vp->v_type == VNON) 207 vp->v_type = VDIR; 208 vp->v_vflag |= VV_ROOT; 209 } 210 211 np->n_fhp = nfhp; 212 /* 213 * For NFSv4, we have to attach the directory file handle and 214 * file name, so that Open Ops can be done later. 215 */ 216 if (nmp->nm_flag & NFSMNT_NFSV4) { 217 MALLOC(np->n_v4, struct nfsv4node *, sizeof (struct nfsv4node) 218 + dnp->n_fhp->nfh_len + cnp->cn_namelen - 1, M_NFSV4NODE, 219 M_WAITOK); 220 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len; 221 np->n_v4->n4_namelen = cnp->cn_namelen; 222 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 223 dnp->n_fhp->nfh_len); 224 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 225 cnp->cn_namelen); 226 } else { 227 np->n_v4 = NULL; 228 } 229 230 /* 231 * NFS supports recursive and shared locking. 232 */ 233 VN_LOCK_AREC(vp); 234 VN_LOCK_ASHARE(vp); 235 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL); 236 error = insmntque(vp, mntp); 237 if (error != 0) { 238 *npp = NULL; 239 mtx_destroy(&np->n_mtx); 240 FREE((caddr_t)nfhp, M_NFSFH); 241 if (np->n_v4 != NULL) 242 FREE((caddr_t)np->n_v4, M_NFSV4NODE); 243 uma_zfree(newnfsnode_zone, np); 244 return (error); 245 } 246 error = vfs_hash_insert(vp, hash, LK_EXCLUSIVE, 247 td, &nvp, newnfs_vncmpf, nfhp); 248 if (error) 249 return (error); 250 if (nvp != NULL) { 251 *npp = VTONFS(nvp); 252 /* vfs_hash_insert() vput()'s the losing vnode */ 253 return (0); 254 } 255 *npp = np; 256 257 return (0); 258 } 259 260 /* 261 * Anothe variant of nfs_nget(). This one is only used by reopen. It 262 * takes almost the same args as nfs_nget(), but only succeeds if an entry 263 * exists in the cache. (Since files should already be "open" with a 264 * vnode ref cnt on the node when reopen calls this, it should always 265 * succeed.) 266 * Also, don't get a vnode lock, since it may already be locked by some 267 * other process that is handling it. This is ok, since all other threads 268 * on the client are blocked by the nfsc_lock being exclusively held by the 269 * caller of this function. 270 */ 271 int 272 nfscl_ngetreopen(struct mount *mntp, u_int8_t *fhp, int fhsize, 273 struct thread *td, struct nfsnode **npp) 274 { 275 struct vnode *nvp; 276 u_int hash; 277 struct nfsfh *nfhp; 278 int error; 279 280 *npp = NULL; 281 /* For forced dismounts, just return error. */ 282 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 283 return (EINTR); 284 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize, 285 M_NFSFH, M_WAITOK); 286 bcopy(fhp, &nfhp->nfh_fh[0], fhsize); 287 nfhp->nfh_len = fhsize; 288 289 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT); 290 291 /* 292 * First, try to get the vnode locked, but don't block for the lock. 293 */ 294 error = vfs_hash_get(mntp, hash, (LK_EXCLUSIVE | LK_NOWAIT), td, &nvp, 295 newnfs_vncmpf, nfhp); 296 if (error == 0 && nvp != NULL) { 297 VOP_UNLOCK(nvp, 0); 298 } else if (error == EBUSY) { 299 /* 300 * The LK_EXCLOTHER lock type tells nfs_lock1() to not try 301 * and lock the vnode, but just get a v_usecount on it. 302 * LK_NOWAIT is set so that when vget() returns ENOENT, 303 * vfs_hash_get() fails instead of looping. 304 * If this succeeds, it is safe so long as a vflush() with 305 * FORCECLOSE has not been done. Since the Renew thread is 306 * stopped and the MNTK_UNMOUNTF flag is set before doing 307 * a vflush() with FORCECLOSE, we should be ok here. 308 */ 309 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 310 error = EINTR; 311 else 312 error = vfs_hash_get(mntp, hash, 313 (LK_EXCLOTHER | LK_NOWAIT), td, &nvp, 314 newnfs_vncmpf, nfhp); 315 } 316 FREE(nfhp, M_NFSFH); 317 if (error) 318 return (error); 319 if (nvp != NULL) { 320 *npp = VTONFS(nvp); 321 return (0); 322 } 323 return (EINVAL); 324 } 325 326 /* 327 * Load the attribute cache (that lives in the nfsnode entry) with 328 * the attributes of the second argument and 329 * Iff vaper not NULL 330 * copy the attributes to *vaper 331 * Similar to nfs_loadattrcache(), except the attributes are passed in 332 * instead of being parsed out of the mbuf list. 333 */ 334 int 335 nfscl_loadattrcache(struct vnode **vpp, struct nfsvattr *nap, void *nvaper, 336 void *stuff, int writeattr, int dontshrink) 337 { 338 struct vnode *vp = *vpp; 339 struct vattr *vap, *nvap = &nap->na_vattr, *vaper = nvaper; 340 struct nfsnode *np; 341 struct nfsmount *nmp; 342 struct timespec mtime_save; 343 struct thread *td = curthread; 344 345 /* 346 * If v_type == VNON it is a new node, so fill in the v_type, 347 * n_mtime fields. Check to see if it represents a special 348 * device, and if so, check for a possible alias. Once the 349 * correct vnode has been obtained, fill in the rest of the 350 * information. 351 */ 352 np = VTONFS(vp); 353 NFSLOCKNODE(np); 354 if (vp->v_type != nvap->va_type) { 355 vp->v_type = nvap->va_type; 356 if (vp->v_type == VFIFO) 357 vp->v_op = &newnfs_fifoops; 358 np->n_mtime = nvap->va_mtime; 359 } 360 nmp = VFSTONFS(vp->v_mount); 361 vap = &np->n_vattr.na_vattr; 362 mtime_save = vap->va_mtime; 363 if (writeattr) { 364 np->n_vattr.na_filerev = nap->na_filerev; 365 np->n_vattr.na_size = nap->na_size; 366 np->n_vattr.na_mtime = nap->na_mtime; 367 np->n_vattr.na_ctime = nap->na_ctime; 368 np->n_vattr.na_fsid = nap->na_fsid; 369 } else { 370 NFSBCOPY((caddr_t)nap, (caddr_t)&np->n_vattr, 371 sizeof (struct nfsvattr)); 372 } 373 374 /* 375 * For NFSv4, if the node's fsid is not equal to the mount point's 376 * fsid, return the low order 32bits of the node's fsid. This 377 * allows getcwd(3) to work. There is a chance that the fsid might 378 * be the same as a local fs, but since this is in an NFS mount 379 * point, I don't think that will cause any problems? 380 */ 381 if ((nmp->nm_flag & (NFSMNT_NFSV4 | NFSMNT_HASSETFSID)) == 382 (NFSMNT_NFSV4 | NFSMNT_HASSETFSID) && 383 (nmp->nm_fsid[0] != np->n_vattr.na_filesid[0] || 384 nmp->nm_fsid[1] != np->n_vattr.na_filesid[1])) 385 vap->va_fsid = np->n_vattr.na_filesid[0]; 386 else 387 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 388 np->n_attrstamp = time_second; 389 /* Timestamp the NFS otw getattr fetch */ 390 if (td->td_proc) { 391 np->n_ac_ts_tid = td->td_tid; 392 np->n_ac_ts_pid = td->td_proc->p_pid; 393 np->n_ac_ts_syscalls = td->td_syscalls; 394 } else 395 bzero(&np->n_ac_ts, sizeof(struct nfs_attrcache_timestamp)); 396 397 if (vap->va_size != np->n_size) { 398 if (vap->va_type == VREG) { 399 if (dontshrink && vap->va_size < np->n_size) { 400 /* 401 * We've been told not to shrink the file; 402 * zero np->n_attrstamp to indicate that 403 * the attributes are stale. 404 */ 405 vap->va_size = np->n_size; 406 np->n_attrstamp = 0; 407 } else if (np->n_flag & NMODIFIED) { 408 /* 409 * We've modified the file: Use the larger 410 * of our size, and the server's size. 411 */ 412 if (vap->va_size < np->n_size) { 413 vap->va_size = np->n_size; 414 } else { 415 np->n_size = vap->va_size; 416 np->n_flag |= NSIZECHANGED; 417 } 418 } else { 419 np->n_size = vap->va_size; 420 np->n_flag |= NSIZECHANGED; 421 } 422 vnode_pager_setsize(vp, np->n_size); 423 } else { 424 np->n_size = vap->va_size; 425 } 426 } 427 /* 428 * The following checks are added to prevent a race between (say) 429 * a READDIR+ and a WRITE. 430 * READDIR+, WRITE requests sent out. 431 * READDIR+ resp, WRITE resp received on client. 432 * However, the WRITE resp was handled before the READDIR+ resp 433 * causing the post op attrs from the write to be loaded first 434 * and the attrs from the READDIR+ to be loaded later. If this 435 * happens, we have stale attrs loaded into the attrcache. 436 * We detect this by for the mtime moving back. We invalidate the 437 * attrcache when this happens. 438 */ 439 if (timespeccmp(&mtime_save, &vap->va_mtime, >)) 440 /* Size changed or mtime went backwards */ 441 np->n_attrstamp = 0; 442 if (vaper != NULL) { 443 NFSBCOPY((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 444 if (np->n_flag & NCHG) { 445 if (np->n_flag & NACC) 446 vaper->va_atime = np->n_atim; 447 if (np->n_flag & NUPD) 448 vaper->va_mtime = np->n_mtim; 449 } 450 } 451 NFSUNLOCKNODE(np); 452 return (0); 453 } 454 455 /* 456 * Fill in the client id name. For these bytes: 457 * 1 - they must be unique 458 * 2 - they should be persistent across client reboots 459 * 1 is more critical than 2 460 * Use the mount point's unique id plus either the uuid or, if that 461 * isn't set, random junk. 462 */ 463 void 464 nfscl_fillclid(u_int64_t clval, char *uuid, u_int8_t *cp, u_int16_t idlen) 465 { 466 int uuidlen; 467 468 /* 469 * First, put in the 64bit mount point identifier. 470 */ 471 if (idlen >= sizeof (u_int64_t)) { 472 NFSBCOPY((caddr_t)&clval, cp, sizeof (u_int64_t)); 473 cp += sizeof (u_int64_t); 474 idlen -= sizeof (u_int64_t); 475 } 476 477 /* 478 * If uuid is non-zero length, use it. 479 */ 480 uuidlen = strlen(uuid); 481 if (uuidlen > 0 && idlen >= uuidlen) { 482 NFSBCOPY(uuid, cp, uuidlen); 483 cp += uuidlen; 484 idlen -= uuidlen; 485 } 486 487 /* 488 * This only normally happens if the uuid isn't set. 489 */ 490 while (idlen > 0) { 491 *cp++ = (u_int8_t)(arc4random() % 256); 492 idlen--; 493 } 494 } 495 496 /* 497 * Fill in a lock owner name. For now, pid + the process's creation time. 498 */ 499 void 500 nfscl_filllockowner(struct thread *td, u_int8_t *cp) 501 { 502 union { 503 u_int32_t lval; 504 u_int8_t cval[4]; 505 } tl; 506 struct proc *p; 507 508 if (td == NULL) { 509 printf("NULL td\n"); 510 bzero(cp, 12); 511 return; 512 } 513 p = td->td_proc; 514 if (p == NULL) { 515 printf("NULL pid\n"); 516 bzero(cp, 12); 517 return; 518 } 519 tl.lval = p->p_pid; 520 *cp++ = tl.cval[0]; 521 *cp++ = tl.cval[1]; 522 *cp++ = tl.cval[2]; 523 *cp++ = tl.cval[3]; 524 if (p->p_stats == NULL) { 525 printf("pstats null\n"); 526 bzero(cp, 8); 527 return; 528 } 529 tl.lval = p->p_stats->p_start.tv_sec; 530 *cp++ = tl.cval[0]; 531 *cp++ = tl.cval[1]; 532 *cp++ = tl.cval[2]; 533 *cp++ = tl.cval[3]; 534 tl.lval = p->p_stats->p_start.tv_usec; 535 *cp++ = tl.cval[0]; 536 *cp++ = tl.cval[1]; 537 *cp++ = tl.cval[2]; 538 *cp = tl.cval[3]; 539 } 540 541 /* 542 * Find the parent process for the thread passed in as an argument. 543 * If none exists, return NULL, otherwise return a thread for the parent. 544 * (Can be any of the threads, since it is only used for td->td_proc.) 545 */ 546 NFSPROC_T * 547 nfscl_getparent(struct thread *td) 548 { 549 struct proc *p; 550 struct thread *ptd; 551 552 if (td == NULL) 553 return (NULL); 554 p = td->td_proc; 555 if (p->p_pid == 0) 556 return (NULL); 557 p = p->p_pptr; 558 if (p == NULL) 559 return (NULL); 560 ptd = TAILQ_FIRST(&p->p_threads); 561 return (ptd); 562 } 563 564 /* 565 * Start up the renew kernel thread. 566 */ 567 static void 568 start_nfscl(void *arg) 569 { 570 struct nfsclclient *clp; 571 struct thread *td; 572 573 clp = (struct nfsclclient *)arg; 574 td = TAILQ_FIRST(&clp->nfsc_renewthread->p_threads); 575 nfscl_renewthread(clp, td); 576 kproc_exit(0); 577 } 578 579 void 580 nfscl_start_renewthread(struct nfsclclient *clp) 581 { 582 583 kproc_create(start_nfscl, (void *)clp, &clp->nfsc_renewthread, 0, 0, 584 "nfscl"); 585 } 586 587 /* 588 * Handle wcc_data. 589 * For NFSv4, it assumes that nfsv4_wccattr() was used to set up the getattr 590 * as the first Op after PutFH. 591 * (For NFSv4, the postop attributes are after the Op, so they can't be 592 * parsed here. A separate call to nfscl_postop_attr() is required.) 593 */ 594 int 595 nfscl_wcc_data(struct nfsrv_descript *nd, struct vnode *vp, 596 struct nfsvattr *nap, int *flagp, int *wccflagp, void *stuff) 597 { 598 u_int32_t *tl; 599 struct nfsnode *np = VTONFS(vp); 600 struct nfsvattr nfsva; 601 int error = 0; 602 603 if (wccflagp != NULL) 604 *wccflagp = 0; 605 if (nd->nd_flag & ND_NFSV3) { 606 *flagp = 0; 607 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 608 if (*tl == newnfs_true) { 609 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 610 if (wccflagp != NULL) { 611 mtx_lock(&np->n_mtx); 612 *wccflagp = (np->n_mtime.tv_sec == 613 fxdr_unsigned(u_int32_t, *(tl + 2)) && 614 np->n_mtime.tv_nsec == 615 fxdr_unsigned(u_int32_t, *(tl + 3))); 616 mtx_unlock(&np->n_mtx); 617 } 618 } 619 error = nfscl_postop_attr(nd, nap, flagp, stuff); 620 } else if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) 621 == (ND_NFSV4 | ND_V4WCCATTR)) { 622 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 623 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 624 NULL, NULL, NULL, NULL, NULL); 625 if (error) 626 return (error); 627 /* 628 * Get rid of Op# and status for next op. 629 */ 630 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 631 if (*++tl) 632 nd->nd_flag |= ND_NOMOREDATA; 633 if (wccflagp != NULL && 634 nfsva.na_vattr.va_mtime.tv_sec != 0) { 635 mtx_lock(&np->n_mtx); 636 *wccflagp = (np->n_mtime.tv_sec == 637 nfsva.na_vattr.va_mtime.tv_sec && 638 np->n_mtime.tv_nsec == 639 nfsva.na_vattr.va_mtime.tv_sec); 640 mtx_unlock(&np->n_mtx); 641 } 642 } 643 nfsmout: 644 return (error); 645 } 646 647 /* 648 * Get postop attributes. 649 */ 650 int 651 nfscl_postop_attr(struct nfsrv_descript *nd, struct nfsvattr *nap, int *retp, 652 void *stuff) 653 { 654 u_int32_t *tl; 655 int error = 0; 656 657 *retp = 0; 658 if (nd->nd_flag & ND_NOMOREDATA) 659 return (error); 660 if (nd->nd_flag & ND_NFSV3) { 661 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 662 *retp = fxdr_unsigned(int, *tl); 663 } else if (nd->nd_flag & ND_NFSV4) { 664 /* 665 * For NFSv4, the postop attr are at the end, so no point 666 * in looking if nd_repstat != 0. 667 */ 668 if (!nd->nd_repstat) { 669 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 670 if (*(tl + 1)) 671 /* should never happen since nd_repstat != 0 */ 672 nd->nd_flag |= ND_NOMOREDATA; 673 else 674 *retp = 1; 675 } 676 } else if (!nd->nd_repstat) { 677 /* For NFSv2, the attributes are here iff nd_repstat == 0 */ 678 *retp = 1; 679 } 680 if (*retp) { 681 error = nfsm_loadattr(nd, nap); 682 if (error) 683 *retp = 0; 684 } 685 nfsmout: 686 return (error); 687 } 688 689 /* 690 * Fill in the setable attributes. The full argument indicates whether 691 * to fill in them all or just mode and time. 692 */ 693 void 694 nfscl_fillsattr(struct nfsrv_descript *nd, struct vattr *vap, 695 struct vnode *vp, int flags, u_int32_t rdev) 696 { 697 u_int32_t *tl; 698 struct nfsv2_sattr *sp; 699 nfsattrbit_t attrbits; 700 struct timeval curtime; 701 702 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 703 case ND_NFSV2: 704 NFSM_BUILD(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 705 if (vap->va_mode == (mode_t)VNOVAL) 706 sp->sa_mode = newnfs_xdrneg1; 707 else 708 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 709 if (vap->va_uid == (uid_t)VNOVAL) 710 sp->sa_uid = newnfs_xdrneg1; 711 else 712 sp->sa_uid = txdr_unsigned(vap->va_uid); 713 if (vap->va_gid == (gid_t)VNOVAL) 714 sp->sa_gid = newnfs_xdrneg1; 715 else 716 sp->sa_gid = txdr_unsigned(vap->va_gid); 717 if (flags & NFSSATTR_SIZE0) 718 sp->sa_size = 0; 719 else if (flags & NFSSATTR_SIZENEG1) 720 sp->sa_size = newnfs_xdrneg1; 721 else if (flags & NFSSATTR_SIZERDEV) 722 sp->sa_size = txdr_unsigned(rdev); 723 else 724 sp->sa_size = txdr_unsigned(vap->va_size); 725 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 726 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 727 break; 728 case ND_NFSV3: 729 getmicrotime(&curtime); 730 if (vap->va_mode != (mode_t)VNOVAL) { 731 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 732 *tl++ = newnfs_true; 733 *tl = txdr_unsigned(vap->va_mode); 734 } else { 735 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 736 *tl = newnfs_false; 737 } 738 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) { 739 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 740 *tl++ = newnfs_true; 741 *tl = txdr_unsigned(vap->va_uid); 742 } else { 743 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 744 *tl = newnfs_false; 745 } 746 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) { 747 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 748 *tl++ = newnfs_true; 749 *tl = txdr_unsigned(vap->va_gid); 750 } else { 751 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 752 *tl = newnfs_false; 753 } 754 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) { 755 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 756 *tl++ = newnfs_true; 757 txdr_hyper(vap->va_size, tl); 758 } else { 759 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 760 *tl = newnfs_false; 761 } 762 if (vap->va_atime.tv_sec != VNOVAL) { 763 if (vap->va_atime.tv_sec != curtime.tv_sec) { 764 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 765 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 766 txdr_nfsv3time(&vap->va_atime, tl); 767 } else { 768 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 769 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 770 } 771 } else { 772 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 773 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 774 } 775 if (vap->va_mtime.tv_sec != VNOVAL) { 776 if (vap->va_mtime.tv_sec != curtime.tv_sec) { 777 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 778 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 779 txdr_nfsv3time(&vap->va_mtime, tl); 780 } else { 781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 782 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 783 } 784 } else { 785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 786 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 787 } 788 break; 789 case ND_NFSV4: 790 NFSZERO_ATTRBIT(&attrbits); 791 if (vap->va_mode != (mode_t)VNOVAL) 792 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_MODE); 793 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) 794 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNER); 795 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) 796 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNERGROUP); 797 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) 798 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 799 if (vap->va_atime.tv_sec != VNOVAL) 800 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESSSET); 801 if (vap->va_mtime.tv_sec != VNOVAL) 802 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFYSET); 803 (void) nfsv4_fillattr(nd, vp, NULL, vap, NULL, 0, &attrbits, 804 NULL, NULL, 0, 0); 805 break; 806 }; 807 } 808 809 /* 810 * nfscl_request() - mostly a wrapper for newnfs_request(). 811 */ 812 int 813 nfscl_request(struct nfsrv_descript *nd, struct vnode *vp, NFSPROC_T *p, 814 struct ucred *cred, void *stuff) 815 { 816 int ret, vers; 817 struct nfsmount *nmp; 818 819 nmp = VFSTONFS(vp->v_mount); 820 if (nd->nd_flag & ND_NFSV4) 821 vers = NFS_VER4; 822 else if (nd->nd_flag & ND_NFSV3) 823 vers = NFS_VER3; 824 else 825 vers = NFS_VER2; 826 ret = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 827 NFS_PROG, vers, NULL, 1, NULL); 828 return (ret); 829 } 830 831 /* 832 * fill in this bsden's variant of statfs using nfsstatfs. 833 */ 834 void 835 nfscl_loadsbinfo(struct nfsmount *nmp, struct nfsstatfs *sfp, void *statfs) 836 { 837 struct statfs *sbp = (struct statfs *)statfs; 838 nfsquad_t tquad; 839 840 if (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) { 841 sbp->f_bsize = NFS_FABLKSIZE; 842 tquad.qval = sfp->sf_tbytes; 843 sbp->f_blocks = (long)(tquad.qval / ((u_quad_t)NFS_FABLKSIZE)); 844 tquad.qval = sfp->sf_fbytes; 845 sbp->f_bfree = (long)(tquad.qval / ((u_quad_t)NFS_FABLKSIZE)); 846 tquad.qval = sfp->sf_abytes; 847 sbp->f_bavail = (long)(tquad.qval / ((u_quad_t)NFS_FABLKSIZE)); 848 tquad.qval = sfp->sf_tfiles; 849 sbp->f_files = (tquad.lval[0] & 0x7fffffff); 850 tquad.qval = sfp->sf_ffiles; 851 sbp->f_ffree = (tquad.lval[0] & 0x7fffffff); 852 } else if ((nmp->nm_flag & NFSMNT_NFSV4) == 0) { 853 sbp->f_bsize = (int32_t)sfp->sf_bsize; 854 sbp->f_blocks = (int32_t)sfp->sf_blocks; 855 sbp->f_bfree = (int32_t)sfp->sf_bfree; 856 sbp->f_bavail = (int32_t)sfp->sf_bavail; 857 sbp->f_files = 0; 858 sbp->f_ffree = 0; 859 } 860 } 861 862 /* 863 * Use the fsinfo stuff to update the mount point. 864 */ 865 void 866 nfscl_loadfsinfo(struct nfsmount *nmp, struct nfsfsinfo *fsp) 867 { 868 869 if ((nmp->nm_wsize == 0 || fsp->fs_wtpref < nmp->nm_wsize) && 870 fsp->fs_wtpref >= NFS_FABLKSIZE) 871 nmp->nm_wsize = (fsp->fs_wtpref + NFS_FABLKSIZE - 1) & 872 ~(NFS_FABLKSIZE - 1); 873 if (fsp->fs_wtmax < nmp->nm_wsize && fsp->fs_wtmax > 0) { 874 nmp->nm_wsize = fsp->fs_wtmax & ~(NFS_FABLKSIZE - 1); 875 if (nmp->nm_wsize == 0) 876 nmp->nm_wsize = fsp->fs_wtmax; 877 } 878 if (nmp->nm_wsize < NFS_FABLKSIZE) 879 nmp->nm_wsize = NFS_FABLKSIZE; 880 if ((nmp->nm_rsize == 0 || fsp->fs_rtpref < nmp->nm_rsize) && 881 fsp->fs_rtpref >= NFS_FABLKSIZE) 882 nmp->nm_rsize = (fsp->fs_rtpref + NFS_FABLKSIZE - 1) & 883 ~(NFS_FABLKSIZE - 1); 884 if (fsp->fs_rtmax < nmp->nm_rsize && fsp->fs_rtmax > 0) { 885 nmp->nm_rsize = fsp->fs_rtmax & ~(NFS_FABLKSIZE - 1); 886 if (nmp->nm_rsize == 0) 887 nmp->nm_rsize = fsp->fs_rtmax; 888 } 889 if (nmp->nm_rsize < NFS_FABLKSIZE) 890 nmp->nm_rsize = NFS_FABLKSIZE; 891 if ((nmp->nm_readdirsize == 0 || fsp->fs_dtpref < nmp->nm_readdirsize) 892 && fsp->fs_dtpref >= NFS_DIRBLKSIZ) 893 nmp->nm_readdirsize = (fsp->fs_dtpref + NFS_DIRBLKSIZ - 1) & 894 ~(NFS_DIRBLKSIZ - 1); 895 if (fsp->fs_rtmax < nmp->nm_readdirsize && fsp->fs_rtmax > 0) { 896 nmp->nm_readdirsize = fsp->fs_rtmax & ~(NFS_DIRBLKSIZ - 1); 897 if (nmp->nm_readdirsize == 0) 898 nmp->nm_readdirsize = fsp->fs_rtmax; 899 } 900 if (nmp->nm_readdirsize < NFS_DIRBLKSIZ) 901 nmp->nm_readdirsize = NFS_DIRBLKSIZ; 902 if (fsp->fs_maxfilesize > 0 && 903 fsp->fs_maxfilesize < nmp->nm_maxfilesize) 904 nmp->nm_maxfilesize = fsp->fs_maxfilesize; 905 nmp->nm_mountp->mnt_stat.f_iosize = newnfs_iosize(nmp); 906 nmp->nm_state |= NFSSTA_GOTFSINFO; 907 } 908 909 /* 910 * Get a pointer to my IP addrress and return it. 911 * Return NULL if you can't find one. 912 */ 913 u_int8_t * 914 nfscl_getmyip(struct nfsmount *nmp, int *isinet6p) 915 { 916 struct sockaddr_in sad, *sin; 917 struct rtentry *rt; 918 u_int8_t *retp = NULL; 919 static struct in_addr laddr; 920 921 *isinet6p = 0; 922 /* 923 * Loop up a route for the destination address. 924 */ 925 if (nmp->nm_nam->sa_family == AF_INET) { 926 bzero(&sad, sizeof (sad)); 927 sin = (struct sockaddr_in *)nmp->nm_nam; 928 sad.sin_family = AF_INET; 929 sad.sin_len = sizeof (struct sockaddr_in); 930 sad.sin_addr.s_addr = sin->sin_addr.s_addr; 931 rt = rtalloc1((struct sockaddr *)&sad, 0, 0UL); 932 if (rt != NULL) { 933 if (rt->rt_ifp != NULL && 934 rt->rt_ifa != NULL && 935 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 936 rt->rt_ifa->ifa_addr->sa_family == AF_INET) { 937 sin = (struct sockaddr_in *) 938 rt->rt_ifa->ifa_addr; 939 laddr.s_addr = sin->sin_addr.s_addr; 940 retp = (u_int8_t *)&laddr; 941 } 942 RTFREE_LOCKED(rt); 943 } 944 #ifdef INET6 945 } else if (nmp->nm_nam->sa_family == AF_INET6) { 946 struct sockaddr_in6 sad6, *sin6; 947 static struct in6_addr laddr6; 948 949 bzero(&sad6, sizeof (sad6)); 950 sin6 = (struct sockaddr_in6 *)nmp->nm_nam; 951 sad6.sin6_family = AF_INET6; 952 sad6.sin6_len = sizeof (struct sockaddr_in6); 953 sad6.sin6_addr = sin6->sin6_addr; 954 rt = rtalloc1((struct sockaddr *)&sad6, 0, 0UL); 955 if (rt != NULL) { 956 if (rt->rt_ifp != NULL && 957 rt->rt_ifa != NULL && 958 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 959 rt->rt_ifa->ifa_addr->sa_family == AF_INET6) { 960 sin6 = (struct sockaddr_in6 *) 961 rt->rt_ifa->ifa_addr; 962 laddr6 = sin6->sin6_addr; 963 retp = (u_int8_t *)&laddr6; 964 *isinet6p = 1; 965 } 966 RTFREE_LOCKED(rt); 967 } 968 #endif 969 } 970 return (retp); 971 } 972 973 /* 974 * Copy NFS uid, gids from the cred structure. 975 */ 976 void 977 newnfs_copyincred(struct ucred *cr, struct nfscred *nfscr) 978 { 979 int i; 980 981 KASSERT(cr->cr_ngroups >= 0, 982 ("newnfs_copyincred: negative cr_ngroups")); 983 nfscr->nfsc_uid = cr->cr_uid; 984 nfscr->nfsc_ngroups = MIN(cr->cr_ngroups, NFS_MAXGRPS + 1); 985 for (i = 0; i < nfscr->nfsc_ngroups; i++) 986 nfscr->nfsc_groups[i] = cr->cr_groups[i]; 987 } 988 989 990 /* 991 * Do any client specific initialization. 992 */ 993 void 994 nfscl_init(void) 995 { 996 static int inited = 0; 997 998 if (inited) 999 return; 1000 inited = 1; 1001 nfscl_inited = 1; 1002 ncl_pbuf_freecnt = nswbuf / 2 + 1; 1003 } 1004 1005 /* 1006 * Check each of the attributes to be set, to ensure they aren't already 1007 * the correct value. Disable setting ones already correct. 1008 */ 1009 int 1010 nfscl_checksattr(struct vattr *vap, struct nfsvattr *nvap) 1011 { 1012 1013 if (vap->va_mode != (mode_t)VNOVAL) { 1014 if (vap->va_mode == nvap->na_mode) 1015 vap->va_mode = (mode_t)VNOVAL; 1016 } 1017 if (vap->va_uid != (uid_t)VNOVAL) { 1018 if (vap->va_uid == nvap->na_uid) 1019 vap->va_uid = (uid_t)VNOVAL; 1020 } 1021 if (vap->va_gid != (gid_t)VNOVAL) { 1022 if (vap->va_gid == nvap->na_gid) 1023 vap->va_gid = (gid_t)VNOVAL; 1024 } 1025 if (vap->va_size != VNOVAL) { 1026 if (vap->va_size == nvap->na_size) 1027 vap->va_size = VNOVAL; 1028 } 1029 1030 /* 1031 * We are normally called with only a partially initialized 1032 * VAP. Since the NFSv3 spec says that server may use the 1033 * file attributes to store the verifier, the spec requires 1034 * us to do a SETATTR RPC. FreeBSD servers store the verifier 1035 * in atime, but we can't really assume that all servers will 1036 * so we ensure that our SETATTR sets both atime and mtime. 1037 */ 1038 if (vap->va_mtime.tv_sec == VNOVAL) 1039 vfs_timestamp(&vap->va_mtime); 1040 if (vap->va_atime.tv_sec == VNOVAL) 1041 vap->va_atime = vap->va_mtime; 1042 return (1); 1043 } 1044 1045 /* 1046 * Map nfsv4 errors to errno.h errors. 1047 * The uid and gid arguments are only used for NFSERR_BADOWNER and that 1048 * error should only be returned for the Open, Create and Setattr Ops. 1049 * As such, most calls can just pass in 0 for those arguments. 1050 */ 1051 APPLESTATIC int 1052 nfscl_maperr(struct thread *td, int error, uid_t uid, gid_t gid) 1053 { 1054 struct proc *p; 1055 1056 if (error < 10000) 1057 return (error); 1058 if (td != NULL) 1059 p = td->td_proc; 1060 else 1061 p = NULL; 1062 switch (error) { 1063 case NFSERR_BADOWNER: 1064 tprintf(p, LOG_INFO, 1065 "No name and/or group mapping for uid,gid:(%d,%d)\n", 1066 uid, gid); 1067 return (EPERM); 1068 case NFSERR_STALECLIENTID: 1069 case NFSERR_STALESTATEID: 1070 case NFSERR_EXPIRED: 1071 case NFSERR_BADSTATEID: 1072 printf("nfsv4 recover err returned %d\n", error); 1073 return (EIO); 1074 case NFSERR_BADHANDLE: 1075 case NFSERR_SERVERFAULT: 1076 case NFSERR_BADTYPE: 1077 case NFSERR_FHEXPIRED: 1078 case NFSERR_RESOURCE: 1079 case NFSERR_MOVED: 1080 case NFSERR_NOFILEHANDLE: 1081 case NFSERR_MINORVERMISMATCH: 1082 case NFSERR_OLDSTATEID: 1083 case NFSERR_BADSEQID: 1084 case NFSERR_LEASEMOVED: 1085 case NFSERR_RECLAIMBAD: 1086 case NFSERR_BADXDR: 1087 case NFSERR_BADCHAR: 1088 case NFSERR_BADNAME: 1089 case NFSERR_OPILLEGAL: 1090 printf("nfsv4 client/server protocol prob err=%d\n", 1091 error); 1092 return (EIO); 1093 default: 1094 tprintf(p, LOG_INFO, "nfsv4 err=%d\n", error); 1095 return (EIO); 1096 }; 1097 } 1098 1099 /* 1100 * Locate a process by number; return only "live" processes -- i.e., neither 1101 * zombies nor newly born but incompletely initialized processes. By not 1102 * returning processes in the PRS_NEW state, we allow callers to avoid 1103 * testing for that condition to avoid dereferencing p_ucred, et al. 1104 * Identical to pfind() in kern_proc.c, except it assume the list is 1105 * already locked. 1106 */ 1107 static struct proc * 1108 pfind_locked(pid_t pid) 1109 { 1110 struct proc *p; 1111 1112 LIST_FOREACH(p, PIDHASH(pid), p_hash) 1113 if (p->p_pid == pid) { 1114 if (p->p_state == PRS_NEW) { 1115 p = NULL; 1116 break; 1117 } 1118 PROC_LOCK(p); 1119 break; 1120 } 1121 return (p); 1122 } 1123 1124 /* 1125 * Check to see if the process for this owner exists. Return 1 if it doesn't 1126 * and 0 otherwise. 1127 */ 1128 int 1129 nfscl_procdoesntexist(u_int8_t *own) 1130 { 1131 union { 1132 u_int32_t lval; 1133 u_int8_t cval[4]; 1134 } tl; 1135 struct proc *p; 1136 pid_t pid; 1137 int ret = 0; 1138 1139 tl.cval[0] = *own++; 1140 tl.cval[1] = *own++; 1141 tl.cval[2] = *own++; 1142 tl.cval[3] = *own++; 1143 pid = tl.lval; 1144 p = pfind_locked(pid); 1145 if (p == NULL) 1146 return (1); 1147 if (p->p_stats == NULL) { 1148 PROC_UNLOCK(p); 1149 return (0); 1150 } 1151 tl.cval[0] = *own++; 1152 tl.cval[1] = *own++; 1153 tl.cval[2] = *own++; 1154 tl.cval[3] = *own++; 1155 if (tl.lval != p->p_stats->p_start.tv_sec) { 1156 ret = 1; 1157 } else { 1158 tl.cval[0] = *own++; 1159 tl.cval[1] = *own++; 1160 tl.cval[2] = *own++; 1161 tl.cval[3] = *own; 1162 if (tl.lval != p->p_stats->p_start.tv_usec) 1163 ret = 1; 1164 } 1165 PROC_UNLOCK(p); 1166 return (ret); 1167 } 1168 1169 /* 1170 * - nfs pseudo system call for the client 1171 */ 1172 /* 1173 * MPSAFE 1174 */ 1175 static int 1176 nfssvc_nfscl(struct thread *td, struct nfssvc_args *uap) 1177 { 1178 struct file *fp; 1179 struct nfscbd_args nfscbdarg; 1180 struct nfsd_nfscbd_args nfscbdarg2; 1181 int error; 1182 1183 if (uap->flag & NFSSVC_CBADDSOCK) { 1184 error = copyin(uap->argp, (caddr_t)&nfscbdarg, sizeof(nfscbdarg)); 1185 if (error) 1186 return (error); 1187 if ((error = fget(td, nfscbdarg.sock, &fp)) != 0) { 1188 return (error); 1189 } 1190 if (fp->f_type != DTYPE_SOCKET) { 1191 fdrop(fp, td); 1192 return (EPERM); 1193 } 1194 error = nfscbd_addsock(fp); 1195 fdrop(fp, td); 1196 if (!error && nfscl_enablecallb == 0) { 1197 nfsv4_cbport = nfscbdarg.port; 1198 nfscl_enablecallb = 1; 1199 } 1200 } else if (uap->flag & NFSSVC_NFSCBD) { 1201 if (uap->argp == NULL) 1202 return (EINVAL); 1203 error = copyin(uap->argp, (caddr_t)&nfscbdarg2, 1204 sizeof(nfscbdarg2)); 1205 if (error) 1206 return (error); 1207 error = nfscbd_nfsd(td, &nfscbdarg2); 1208 } else { 1209 error = EINVAL; 1210 } 1211 return (error); 1212 } 1213 1214 extern int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *); 1215 1216 /* 1217 * Called once to initialize data structures... 1218 */ 1219 static int 1220 nfscl_modevent(module_t mod, int type, void *data) 1221 { 1222 int error = 0; 1223 static int loaded = 0; 1224 1225 switch (type) { 1226 case MOD_LOAD: 1227 if (loaded) 1228 return (0); 1229 newnfs_portinit(); 1230 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, 1231 MTX_DEF); 1232 mtx_init(&ncl_iod_mutex, "ncl_iod_mutex", NULL, MTX_DEF); 1233 nfscl_init(); 1234 NFSD_LOCK(); 1235 nfsrvd_cbinit(0); 1236 NFSD_UNLOCK(); 1237 ncl_call_invalcaches = ncl_invalcaches; 1238 nfsd_call_nfscl = nfssvc_nfscl; 1239 loaded = 1; 1240 break; 1241 1242 case MOD_UNLOAD: 1243 if (nfs_numnfscbd != 0) { 1244 error = EBUSY; 1245 break; 1246 } 1247 1248 /* 1249 * XXX: Unloading of nfscl module is unsupported. 1250 */ 1251 #if 0 1252 ncl_call_invalcaches = NULL; 1253 nfsd_call_nfscl = NULL; 1254 /* and get rid of the mutexes */ 1255 mtx_destroy(&nfs_clstate_mutex); 1256 mtx_destroy(&ncl_iod_mutex); 1257 loaded = 0; 1258 break; 1259 #else 1260 /* FALLTHROUGH */ 1261 #endif 1262 default: 1263 error = EOPNOTSUPP; 1264 break; 1265 } 1266 return error; 1267 } 1268 static moduledata_t nfscl_mod = { 1269 "nfscl", 1270 nfscl_modevent, 1271 NULL, 1272 }; 1273 DECLARE_MODULE(nfscl, nfscl_mod, SI_SUB_VFS, SI_ORDER_FIRST); 1274 1275 /* So that loader and kldload(2) can find us, wherever we are.. */ 1276 MODULE_VERSION(nfscl, 1); 1277 MODULE_DEPEND(nfscl, nfscommon, 1, 1, 1); 1278
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