nfs_clport.c revision 300141
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: stable/10/sys/fs/nfsclient/nfs_clport.c 300141 2016-05-18 12:02:05Z kib $"); 36 37#include "opt_inet6.h" 38#include "opt_kdtrace.h" 39 40#include <sys/capsicum.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 54dtrace_nfsclient_attrcache_flush_probe_func_t 55 dtrace_nfscl_attrcache_flush_done_probe; 56uint32_t nfscl_attrcache_flush_done_id; 57 58dtrace_nfsclient_attrcache_get_hit_probe_func_t 59 dtrace_nfscl_attrcache_get_hit_probe; 60uint32_t nfscl_attrcache_get_hit_id; 61 62dtrace_nfsclient_attrcache_get_miss_probe_func_t 63 dtrace_nfscl_attrcache_get_miss_probe; 64uint32_t nfscl_attrcache_get_miss_id; 65 66dtrace_nfsclient_attrcache_load_probe_func_t 67 dtrace_nfscl_attrcache_load_done_probe; 68uint32_t nfscl_attrcache_load_done_id; 69#endif /* !KDTRACE_HOOKS */ 70 71extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 72extern struct vop_vector newnfs_vnodeops; 73extern struct vop_vector newnfs_fifoops; 74extern uma_zone_t newnfsnode_zone; 75extern struct buf_ops buf_ops_newnfs; 76extern int ncl_pbuf_freecnt; 77extern short nfsv4_cbport; 78extern int nfscl_enablecallb; 79extern int nfs_numnfscbd; 80extern int nfscl_inited; 81struct mtx nfs_clstate_mutex; 82struct mtx ncl_iod_mutex; 83NFSDLOCKMUTEX; 84 85extern void (*ncl_call_invalcaches)(struct vnode *); 86 87/* 88 * Comparison function for vfs_hash functions. 89 */ 90int 91newnfs_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 */ 110int 111nfscl_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 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO); 201 202 error = getnewvnode(nfs_vnode_tag, mntp, &newnfs_vnodeops, &nvp); 203 if (error) { 204 uma_zfree(newnfsnode_zone, np); 205 FREE((caddr_t)nfhp, M_NFSFH); 206 return (error); 207 } 208 vp = nvp; 209 KASSERT(vp->v_bufobj.bo_bsize != 0, ("nfscl_nget: bo_bsize == 0")); 210 vp->v_bufobj.bo_ops = &buf_ops_newnfs; 211 vp->v_data = np; 212 np->n_vnode = vp; 213 /* 214 * Initialize the mutex even if the vnode is going to be a loser. 215 * This simplifies the logic in reclaim, which can then unconditionally 216 * destroy the mutex (in the case of the loser, or if hash_insert 217 * happened to return an error no special casing is needed). 218 */ 219 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK); 220 221 /* 222 * Are we getting the root? If so, make sure the vnode flags 223 * are correct 224 */ 225 if ((nfhp->nfh_len == nmp->nm_fhsize) && 226 !bcmp(nfhp->nfh_fh, nmp->nm_fh, nfhp->nfh_len)) { 227 if (vp->v_type == VNON) 228 vp->v_type = VDIR; 229 vp->v_vflag |= VV_ROOT; 230 } 231 232 np->n_fhp = nfhp; 233 /* 234 * For NFSv4, we have to attach the directory file handle and 235 * file name, so that Open Ops can be done later. 236 */ 237 if (nmp->nm_flag & NFSMNT_NFSV4) { 238 MALLOC(np->n_v4, struct nfsv4node *, sizeof (struct nfsv4node) 239 + dnp->n_fhp->nfh_len + cnp->cn_namelen - 1, M_NFSV4NODE, 240 M_WAITOK); 241 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len; 242 np->n_v4->n4_namelen = cnp->cn_namelen; 243 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data, 244 dnp->n_fhp->nfh_len); 245 NFSBCOPY(cnp->cn_nameptr, NFS4NODENAME(np->n_v4), 246 cnp->cn_namelen); 247 } else { 248 np->n_v4 = NULL; 249 } 250 251 /* 252 * NFS supports recursive and shared locking. 253 */ 254 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL); 255 VN_LOCK_AREC(vp); 256 VN_LOCK_ASHARE(vp); 257 error = insmntque(vp, mntp); 258 if (error != 0) { 259 *npp = NULL; 260 mtx_destroy(&np->n_mtx); 261 FREE((caddr_t)nfhp, M_NFSFH); 262 if (np->n_v4 != NULL) 263 FREE((caddr_t)np->n_v4, M_NFSV4NODE); 264 uma_zfree(newnfsnode_zone, np); 265 return (error); 266 } 267 error = vfs_hash_insert(vp, hash, lkflags, 268 td, &nvp, newnfs_vncmpf, nfhp); 269 if (error) 270 return (error); 271 if (nvp != NULL) { 272 *npp = VTONFS(nvp); 273 /* vfs_hash_insert() vput()'s the losing vnode */ 274 return (0); 275 } 276 *npp = np; 277 278 return (0); 279} 280 281/* 282 * Another variant of nfs_nget(). This one is only used by reopen. It 283 * takes almost the same args as nfs_nget(), but only succeeds if an entry 284 * exists in the cache. (Since files should already be "open" with a 285 * vnode ref cnt on the node when reopen calls this, it should always 286 * succeed.) 287 * Also, don't get a vnode lock, since it may already be locked by some 288 * other process that is handling it. This is ok, since all other threads 289 * on the client are blocked by the nfsc_lock being exclusively held by the 290 * caller of this function. 291 */ 292int 293nfscl_ngetreopen(struct mount *mntp, u_int8_t *fhp, int fhsize, 294 struct thread *td, struct nfsnode **npp) 295{ 296 struct vnode *nvp; 297 u_int hash; 298 struct nfsfh *nfhp; 299 int error; 300 301 *npp = NULL; 302 /* For forced dismounts, just return error. */ 303 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 304 return (EINTR); 305 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize, 306 M_NFSFH, M_WAITOK); 307 bcopy(fhp, &nfhp->nfh_fh[0], fhsize); 308 nfhp->nfh_len = fhsize; 309 310 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT); 311 312 /* 313 * First, try to get the vnode locked, but don't block for the lock. 314 */ 315 error = vfs_hash_get(mntp, hash, (LK_EXCLUSIVE | LK_NOWAIT), td, &nvp, 316 newnfs_vncmpf, nfhp); 317 if (error == 0 && nvp != NULL) { 318 NFSVOPUNLOCK(nvp, 0); 319 } else if (error == EBUSY) { 320 /* 321 * It is safe so long as a vflush() with 322 * FORCECLOSE has not been done. Since the Renew thread is 323 * stopped and the MNTK_UNMOUNTF flag is set before doing 324 * a vflush() with FORCECLOSE, we should be ok here. 325 */ 326 if ((mntp->mnt_kern_flag & MNTK_UNMOUNTF)) 327 error = EINTR; 328 else { 329 vfs_hash_ref(mntp, hash, td, &nvp, newnfs_vncmpf, nfhp); 330 if (nvp == NULL) { 331 error = ENOENT; 332 } else if ((nvp->v_iflag & VI_DOOMED) != 0) { 333 error = ENOENT; 334 vrele(nvp); 335 } else { 336 error = 0; 337 } 338 } 339 } 340 FREE(nfhp, M_NFSFH); 341 if (error) 342 return (error); 343 if (nvp != NULL) { 344 *npp = VTONFS(nvp); 345 return (0); 346 } 347 return (EINVAL); 348} 349 350/* 351 * Load the attribute cache (that lives in the nfsnode entry) with 352 * the attributes of the second argument and 353 * Iff vaper not NULL 354 * copy the attributes to *vaper 355 * Similar to nfs_loadattrcache(), except the attributes are passed in 356 * instead of being parsed out of the mbuf list. 357 */ 358int 359nfscl_loadattrcache(struct vnode **vpp, struct nfsvattr *nap, void *nvaper, 360 void *stuff, int writeattr, int dontshrink) 361{ 362 struct vnode *vp = *vpp; 363 struct vattr *vap, *nvap = &nap->na_vattr, *vaper = nvaper; 364 struct nfsnode *np; 365 struct nfsmount *nmp; 366 struct timespec mtime_save; 367 u_quad_t nsize; 368 int setnsize; 369 370 /* 371 * If v_type == VNON it is a new node, so fill in the v_type, 372 * n_mtime fields. Check to see if it represents a special 373 * device, and if so, check for a possible alias. Once the 374 * correct vnode has been obtained, fill in the rest of the 375 * information. 376 */ 377 np = VTONFS(vp); 378 NFSLOCKNODE(np); 379 if (vp->v_type != nvap->va_type) { 380 vp->v_type = nvap->va_type; 381 if (vp->v_type == VFIFO) 382 vp->v_op = &newnfs_fifoops; 383 np->n_mtime = nvap->va_mtime; 384 } 385 nmp = VFSTONFS(vp->v_mount); 386 vap = &np->n_vattr.na_vattr; 387 mtime_save = vap->va_mtime; 388 if (writeattr) { 389 np->n_vattr.na_filerev = nap->na_filerev; 390 np->n_vattr.na_size = nap->na_size; 391 np->n_vattr.na_mtime = nap->na_mtime; 392 np->n_vattr.na_ctime = nap->na_ctime; 393 np->n_vattr.na_fsid = nap->na_fsid; 394 np->n_vattr.na_mode = nap->na_mode; 395 } else { 396 NFSBCOPY((caddr_t)nap, (caddr_t)&np->n_vattr, 397 sizeof (struct nfsvattr)); 398 } 399 400 /* 401 * For NFSv4, if the node's fsid is not equal to the mount point's 402 * fsid, return the low order 32bits of the node's fsid. This 403 * allows getcwd(3) to work. There is a chance that the fsid might 404 * be the same as a local fs, but since this is in an NFS mount 405 * point, I don't think that will cause any problems? 406 */ 407 if (NFSHASNFSV4(nmp) && NFSHASHASSETFSID(nmp) && 408 (nmp->nm_fsid[0] != np->n_vattr.na_filesid[0] || 409 nmp->nm_fsid[1] != np->n_vattr.na_filesid[1])) { 410 /* 411 * va_fsid needs to be set to some value derived from 412 * np->n_vattr.na_filesid that is not equal 413 * vp->v_mount->mnt_stat.f_fsid[0], so that it changes 414 * from the value used for the top level server volume 415 * in the mounted subtree. 416 */ 417 if (vp->v_mount->mnt_stat.f_fsid.val[0] != 418 (uint32_t)np->n_vattr.na_filesid[0]) 419 vap->va_fsid = (uint32_t)np->n_vattr.na_filesid[0]; 420 else 421 vap->va_fsid = (uint32_t)hash32_buf( 422 np->n_vattr.na_filesid, 2 * sizeof(uint64_t), 0); 423 } else 424 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 425 np->n_attrstamp = time_second; 426 setnsize = 0; 427 nsize = 0; 428 if (vap->va_size != np->n_size) { 429 if (vap->va_type == VREG) { 430 if (dontshrink && vap->va_size < np->n_size) { 431 /* 432 * We've been told not to shrink the file; 433 * zero np->n_attrstamp to indicate that 434 * the attributes are stale. 435 */ 436 vap->va_size = np->n_size; 437 np->n_attrstamp = 0; 438 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 439 vnode_pager_setsize(vp, np->n_size); 440 } else if (np->n_flag & NMODIFIED) { 441 /* 442 * We've modified the file: Use the larger 443 * of our size, and the server's size. 444 */ 445 if (vap->va_size < np->n_size) { 446 vap->va_size = np->n_size; 447 } else { 448 np->n_size = vap->va_size; 449 np->n_flag |= NSIZECHANGED; 450 } 451 vnode_pager_setsize(vp, np->n_size); 452 } else if (vap->va_size < np->n_size) { 453 /* 454 * When shrinking the size, the call to 455 * vnode_pager_setsize() cannot be done 456 * with the mutex held, so delay it until 457 * after the mtx_unlock call. 458 */ 459 nsize = np->n_size = vap->va_size; 460 np->n_flag |= NSIZECHANGED; 461 setnsize = 1; 462 } else { 463 np->n_size = vap->va_size; 464 np->n_flag |= NSIZECHANGED; 465 vnode_pager_setsize(vp, np->n_size); 466 } 467 } else { 468 np->n_size = vap->va_size; 469 } 470 } 471 /* 472 * The following checks are added to prevent a race between (say) 473 * a READDIR+ and a WRITE. 474 * READDIR+, WRITE requests sent out. 475 * READDIR+ resp, WRITE resp received on client. 476 * However, the WRITE resp was handled before the READDIR+ resp 477 * causing the post op attrs from the write to be loaded first 478 * and the attrs from the READDIR+ to be loaded later. If this 479 * happens, we have stale attrs loaded into the attrcache. 480 * We detect this by for the mtime moving back. We invalidate the 481 * attrcache when this happens. 482 */ 483 if (timespeccmp(&mtime_save, &vap->va_mtime, >)) { 484 /* Size changed or mtime went backwards */ 485 np->n_attrstamp = 0; 486 KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 487 } 488 if (vaper != NULL) { 489 NFSBCOPY((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 490 if (np->n_flag & NCHG) { 491 if (np->n_flag & NACC) 492 vaper->va_atime = np->n_atim; 493 if (np->n_flag & NUPD) 494 vaper->va_mtime = np->n_mtim; 495 } 496 } 497#ifdef KDTRACE_HOOKS 498 if (np->n_attrstamp != 0) 499 KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, 0); 500#endif 501 NFSUNLOCKNODE(np); 502 if (setnsize) 503 vnode_pager_setsize(vp, nsize); 504 return (0); 505} 506 507/* 508 * Fill in the client id name. For these bytes: 509 * 1 - they must be unique 510 * 2 - they should be persistent across client reboots 511 * 1 is more critical than 2 512 * Use the mount point's unique id plus either the uuid or, if that 513 * isn't set, random junk. 514 */ 515void 516nfscl_fillclid(u_int64_t clval, char *uuid, u_int8_t *cp, u_int16_t idlen) 517{ 518 int uuidlen; 519 520 /* 521 * First, put in the 64bit mount point identifier. 522 */ 523 if (idlen >= sizeof (u_int64_t)) { 524 NFSBCOPY((caddr_t)&clval, cp, sizeof (u_int64_t)); 525 cp += sizeof (u_int64_t); 526 idlen -= sizeof (u_int64_t); 527 } 528 529 /* 530 * If uuid is non-zero length, use it. 531 */ 532 uuidlen = strlen(uuid); 533 if (uuidlen > 0 && idlen >= uuidlen) { 534 NFSBCOPY(uuid, cp, uuidlen); 535 cp += uuidlen; 536 idlen -= uuidlen; 537 } 538 539 /* 540 * This only normally happens if the uuid isn't set. 541 */ 542 while (idlen > 0) { 543 *cp++ = (u_int8_t)(arc4random() % 256); 544 idlen--; 545 } 546} 547 548/* 549 * Fill in a lock owner name. For now, pid + the process's creation time. 550 */ 551void 552nfscl_filllockowner(void *id, u_int8_t *cp, int flags) 553{ 554 union { 555 u_int32_t lval; 556 u_int8_t cval[4]; 557 } tl; 558 struct proc *p; 559 560 if (id == NULL) { 561 printf("NULL id\n"); 562 bzero(cp, NFSV4CL_LOCKNAMELEN); 563 return; 564 } 565 if ((flags & F_POSIX) != 0) { 566 p = (struct proc *)id; 567 tl.lval = p->p_pid; 568 *cp++ = tl.cval[0]; 569 *cp++ = tl.cval[1]; 570 *cp++ = tl.cval[2]; 571 *cp++ = tl.cval[3]; 572 tl.lval = p->p_stats->p_start.tv_sec; 573 *cp++ = tl.cval[0]; 574 *cp++ = tl.cval[1]; 575 *cp++ = tl.cval[2]; 576 *cp++ = tl.cval[3]; 577 tl.lval = p->p_stats->p_start.tv_usec; 578 *cp++ = tl.cval[0]; 579 *cp++ = tl.cval[1]; 580 *cp++ = tl.cval[2]; 581 *cp = tl.cval[3]; 582 } else if ((flags & F_FLOCK) != 0) { 583 bcopy(&id, cp, sizeof(id)); 584 bzero(&cp[sizeof(id)], NFSV4CL_LOCKNAMELEN - sizeof(id)); 585 } else { 586 printf("nfscl_filllockowner: not F_POSIX or F_FLOCK\n"); 587 bzero(cp, NFSV4CL_LOCKNAMELEN); 588 } 589} 590 591/* 592 * Find the parent process for the thread passed in as an argument. 593 * If none exists, return NULL, otherwise return a thread for the parent. 594 * (Can be any of the threads, since it is only used for td->td_proc.) 595 */ 596NFSPROC_T * 597nfscl_getparent(struct thread *td) 598{ 599 struct proc *p; 600 struct thread *ptd; 601 602 if (td == NULL) 603 return (NULL); 604 p = td->td_proc; 605 if (p->p_pid == 0) 606 return (NULL); 607 p = p->p_pptr; 608 if (p == NULL) 609 return (NULL); 610 ptd = TAILQ_FIRST(&p->p_threads); 611 return (ptd); 612} 613 614/* 615 * Start up the renew kernel thread. 616 */ 617static void 618start_nfscl(void *arg) 619{ 620 struct nfsclclient *clp; 621 struct thread *td; 622 623 clp = (struct nfsclclient *)arg; 624 td = TAILQ_FIRST(&clp->nfsc_renewthread->p_threads); 625 nfscl_renewthread(clp, td); 626 kproc_exit(0); 627} 628 629void 630nfscl_start_renewthread(struct nfsclclient *clp) 631{ 632 633 kproc_create(start_nfscl, (void *)clp, &clp->nfsc_renewthread, 0, 0, 634 "nfscl"); 635} 636 637/* 638 * Handle wcc_data. 639 * For NFSv4, it assumes that nfsv4_wccattr() was used to set up the getattr 640 * as the first Op after PutFH. 641 * (For NFSv4, the postop attributes are after the Op, so they can't be 642 * parsed here. A separate call to nfscl_postop_attr() is required.) 643 */ 644int 645nfscl_wcc_data(struct nfsrv_descript *nd, struct vnode *vp, 646 struct nfsvattr *nap, int *flagp, int *wccflagp, void *stuff) 647{ 648 u_int32_t *tl; 649 struct nfsnode *np = VTONFS(vp); 650 struct nfsvattr nfsva; 651 int error = 0; 652 653 if (wccflagp != NULL) 654 *wccflagp = 0; 655 if (nd->nd_flag & ND_NFSV3) { 656 *flagp = 0; 657 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 658 if (*tl == newnfs_true) { 659 NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 660 if (wccflagp != NULL) { 661 mtx_lock(&np->n_mtx); 662 *wccflagp = (np->n_mtime.tv_sec == 663 fxdr_unsigned(u_int32_t, *(tl + 2)) && 664 np->n_mtime.tv_nsec == 665 fxdr_unsigned(u_int32_t, *(tl + 3))); 666 mtx_unlock(&np->n_mtx); 667 } 668 } 669 error = nfscl_postop_attr(nd, nap, flagp, stuff); 670 } else if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) 671 == (ND_NFSV4 | ND_V4WCCATTR)) { 672 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 673 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 674 NULL, NULL, NULL, NULL, NULL); 675 if (error) 676 return (error); 677 /* 678 * Get rid of Op# and status for next op. 679 */ 680 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 681 if (*++tl) 682 nd->nd_flag |= ND_NOMOREDATA; 683 if (wccflagp != NULL && 684 nfsva.na_vattr.va_mtime.tv_sec != 0) { 685 mtx_lock(&np->n_mtx); 686 *wccflagp = (np->n_mtime.tv_sec == 687 nfsva.na_vattr.va_mtime.tv_sec && 688 np->n_mtime.tv_nsec == 689 nfsva.na_vattr.va_mtime.tv_sec); 690 mtx_unlock(&np->n_mtx); 691 } 692 } 693nfsmout: 694 return (error); 695} 696 697/* 698 * Get postop attributes. 699 */ 700int 701nfscl_postop_attr(struct nfsrv_descript *nd, struct nfsvattr *nap, int *retp, 702 void *stuff) 703{ 704 u_int32_t *tl; 705 int error = 0; 706 707 *retp = 0; 708 if (nd->nd_flag & ND_NOMOREDATA) 709 return (error); 710 if (nd->nd_flag & ND_NFSV3) { 711 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 712 *retp = fxdr_unsigned(int, *tl); 713 } else if (nd->nd_flag & ND_NFSV4) { 714 /* 715 * For NFSv4, the postop attr are at the end, so no point 716 * in looking if nd_repstat != 0. 717 */ 718 if (!nd->nd_repstat) { 719 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 720 if (*(tl + 1)) 721 /* should never happen since nd_repstat != 0 */ 722 nd->nd_flag |= ND_NOMOREDATA; 723 else 724 *retp = 1; 725 } 726 } else if (!nd->nd_repstat) { 727 /* For NFSv2, the attributes are here iff nd_repstat == 0 */ 728 *retp = 1; 729 } 730 if (*retp) { 731 error = nfsm_loadattr(nd, nap); 732 if (error) 733 *retp = 0; 734 } 735nfsmout: 736 return (error); 737} 738 739/* 740 * Fill in the setable attributes. The full argument indicates whether 741 * to fill in them all or just mode and time. 742 */ 743void 744nfscl_fillsattr(struct nfsrv_descript *nd, struct vattr *vap, 745 struct vnode *vp, int flags, u_int32_t rdev) 746{ 747 u_int32_t *tl; 748 struct nfsv2_sattr *sp; 749 nfsattrbit_t attrbits; 750 751 switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 752 case ND_NFSV2: 753 NFSM_BUILD(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 754 if (vap->va_mode == (mode_t)VNOVAL) 755 sp->sa_mode = newnfs_xdrneg1; 756 else 757 sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 758 if (vap->va_uid == (uid_t)VNOVAL) 759 sp->sa_uid = newnfs_xdrneg1; 760 else 761 sp->sa_uid = txdr_unsigned(vap->va_uid); 762 if (vap->va_gid == (gid_t)VNOVAL) 763 sp->sa_gid = newnfs_xdrneg1; 764 else 765 sp->sa_gid = txdr_unsigned(vap->va_gid); 766 if (flags & NFSSATTR_SIZE0) 767 sp->sa_size = 0; 768 else if (flags & NFSSATTR_SIZENEG1) 769 sp->sa_size = newnfs_xdrneg1; 770 else if (flags & NFSSATTR_SIZERDEV) 771 sp->sa_size = txdr_unsigned(rdev); 772 else 773 sp->sa_size = txdr_unsigned(vap->va_size); 774 txdr_nfsv2time(&vap->va_atime, &sp->sa_atime); 775 txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime); 776 break; 777 case ND_NFSV3: 778 if (vap->va_mode != (mode_t)VNOVAL) { 779 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 780 *tl++ = newnfs_true; 781 *tl = txdr_unsigned(vap->va_mode); 782 } else { 783 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 784 *tl = newnfs_false; 785 } 786 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) { 787 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 788 *tl++ = newnfs_true; 789 *tl = txdr_unsigned(vap->va_uid); 790 } else { 791 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 792 *tl = newnfs_false; 793 } 794 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) { 795 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 796 *tl++ = newnfs_true; 797 *tl = txdr_unsigned(vap->va_gid); 798 } else { 799 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 800 *tl = newnfs_false; 801 } 802 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) { 803 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 804 *tl++ = newnfs_true; 805 txdr_hyper(vap->va_size, tl); 806 } else { 807 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 808 *tl = newnfs_false; 809 } 810 if (vap->va_atime.tv_sec != VNOVAL) { 811 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) { 812 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 813 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 814 txdr_nfsv3time(&vap->va_atime, tl); 815 } else { 816 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 817 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 818 } 819 } else { 820 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 821 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 822 } 823 if (vap->va_mtime.tv_sec != VNOVAL) { 824 if ((vap->va_vaflags & VA_UTIMES_NULL) == 0) { 825 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 826 *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 827 txdr_nfsv3time(&vap->va_mtime, tl); 828 } else { 829 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 830 *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 831 } 832 } else { 833 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 834 *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 835 } 836 break; 837 case ND_NFSV4: 838 NFSZERO_ATTRBIT(&attrbits); 839 if (vap->va_mode != (mode_t)VNOVAL) 840 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_MODE); 841 if ((flags & NFSSATTR_FULL) && vap->va_uid != (uid_t)VNOVAL) 842 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNER); 843 if ((flags & NFSSATTR_FULL) && vap->va_gid != (gid_t)VNOVAL) 844 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_OWNERGROUP); 845 if ((flags & NFSSATTR_FULL) && vap->va_size != VNOVAL) 846 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE); 847 if (vap->va_atime.tv_sec != VNOVAL) 848 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESSSET); 849 if (vap->va_mtime.tv_sec != VNOVAL) 850 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFYSET); 851 (void) nfsv4_fillattr(nd, vp->v_mount, vp, NULL, vap, NULL, 0, 852 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 853 break; 854 }; 855} 856 857/* 858 * nfscl_request() - mostly a wrapper for newnfs_request(). 859 */ 860int 861nfscl_request(struct nfsrv_descript *nd, struct vnode *vp, NFSPROC_T *p, 862 struct ucred *cred, void *stuff) 863{ 864 int ret, vers; 865 struct nfsmount *nmp; 866 867 nmp = VFSTONFS(vp->v_mount); 868 if (nd->nd_flag & ND_NFSV4) 869 vers = NFS_VER4; 870 else if (nd->nd_flag & ND_NFSV3) 871 vers = NFS_VER3; 872 else 873 vers = NFS_VER2; 874 ret = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 875 NFS_PROG, vers, NULL, 1, NULL, NULL); 876 return (ret); 877} 878 879/* 880 * fill in this bsden's variant of statfs using nfsstatfs. 881 */ 882void 883nfscl_loadsbinfo(struct nfsmount *nmp, struct nfsstatfs *sfp, void *statfs) 884{ 885 struct statfs *sbp = (struct statfs *)statfs; 886 887 if (nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) { 888 sbp->f_bsize = NFS_FABLKSIZE; 889 sbp->f_blocks = sfp->sf_tbytes / NFS_FABLKSIZE; 890 sbp->f_bfree = sfp->sf_fbytes / NFS_FABLKSIZE; 891 /* 892 * Although sf_abytes is uint64_t and f_bavail is int64_t, 893 * the value after dividing by NFS_FABLKSIZE is small 894 * enough that it will fit in 63bits, so it is ok to 895 * assign it to f_bavail without fear that it will become 896 * negative. 897 */ 898 sbp->f_bavail = sfp->sf_abytes / NFS_FABLKSIZE; 899 sbp->f_files = sfp->sf_tfiles; 900 /* Since f_ffree is int64_t, clip it to 63bits. */ 901 if (sfp->sf_ffiles > INT64_MAX) 902 sbp->f_ffree = INT64_MAX; 903 else 904 sbp->f_ffree = sfp->sf_ffiles; 905 } else if ((nmp->nm_flag & NFSMNT_NFSV4) == 0) { 906 /* 907 * The type casts to (int32_t) ensure that this code is 908 * compatible with the old NFS client, in that it will 909 * propagate bit31 to the high order bits. This may or may 910 * not be correct for NFSv2, but since it is a legacy 911 * environment, I'd rather retain backwards compatibility. 912 */ 913 sbp->f_bsize = (int32_t)sfp->sf_bsize; 914 sbp->f_blocks = (int32_t)sfp->sf_blocks; 915 sbp->f_bfree = (int32_t)sfp->sf_bfree; 916 sbp->f_bavail = (int32_t)sfp->sf_bavail; 917 sbp->f_files = 0; 918 sbp->f_ffree = 0; 919 } 920} 921 922/* 923 * Use the fsinfo stuff to update the mount point. 924 */ 925void 926nfscl_loadfsinfo(struct nfsmount *nmp, struct nfsfsinfo *fsp) 927{ 928 929 if ((nmp->nm_wsize == 0 || fsp->fs_wtpref < nmp->nm_wsize) && 930 fsp->fs_wtpref >= NFS_FABLKSIZE) 931 nmp->nm_wsize = (fsp->fs_wtpref + NFS_FABLKSIZE - 1) & 932 ~(NFS_FABLKSIZE - 1); 933 if (fsp->fs_wtmax < nmp->nm_wsize && fsp->fs_wtmax > 0) { 934 nmp->nm_wsize = fsp->fs_wtmax & ~(NFS_FABLKSIZE - 1); 935 if (nmp->nm_wsize == 0) 936 nmp->nm_wsize = fsp->fs_wtmax; 937 } 938 if (nmp->nm_wsize < NFS_FABLKSIZE) 939 nmp->nm_wsize = NFS_FABLKSIZE; 940 if ((nmp->nm_rsize == 0 || fsp->fs_rtpref < nmp->nm_rsize) && 941 fsp->fs_rtpref >= NFS_FABLKSIZE) 942 nmp->nm_rsize = (fsp->fs_rtpref + NFS_FABLKSIZE - 1) & 943 ~(NFS_FABLKSIZE - 1); 944 if (fsp->fs_rtmax < nmp->nm_rsize && fsp->fs_rtmax > 0) { 945 nmp->nm_rsize = fsp->fs_rtmax & ~(NFS_FABLKSIZE - 1); 946 if (nmp->nm_rsize == 0) 947 nmp->nm_rsize = fsp->fs_rtmax; 948 } 949 if (nmp->nm_rsize < NFS_FABLKSIZE) 950 nmp->nm_rsize = NFS_FABLKSIZE; 951 if ((nmp->nm_readdirsize == 0 || fsp->fs_dtpref < nmp->nm_readdirsize) 952 && fsp->fs_dtpref >= NFS_DIRBLKSIZ) 953 nmp->nm_readdirsize = (fsp->fs_dtpref + NFS_DIRBLKSIZ - 1) & 954 ~(NFS_DIRBLKSIZ - 1); 955 if (fsp->fs_rtmax < nmp->nm_readdirsize && fsp->fs_rtmax > 0) { 956 nmp->nm_readdirsize = fsp->fs_rtmax & ~(NFS_DIRBLKSIZ - 1); 957 if (nmp->nm_readdirsize == 0) 958 nmp->nm_readdirsize = fsp->fs_rtmax; 959 } 960 if (nmp->nm_readdirsize < NFS_DIRBLKSIZ) 961 nmp->nm_readdirsize = NFS_DIRBLKSIZ; 962 if (fsp->fs_maxfilesize > 0 && 963 fsp->fs_maxfilesize < nmp->nm_maxfilesize) 964 nmp->nm_maxfilesize = fsp->fs_maxfilesize; 965 nmp->nm_mountp->mnt_stat.f_iosize = newnfs_iosize(nmp); 966 nmp->nm_state |= NFSSTA_GOTFSINFO; 967} 968 969/* 970 * Get a pointer to my IP addrress and return it. 971 * Return NULL if you can't find one. 972 */ 973u_int8_t * 974nfscl_getmyip(struct nfsmount *nmp, int *isinet6p) 975{ 976 struct sockaddr_in sad, *sin; 977 struct rtentry *rt; 978 u_int8_t *retp = NULL; 979 static struct in_addr laddr; 980 981 *isinet6p = 0; 982 /* 983 * Loop up a route for the destination address. 984 */ 985 if (nmp->nm_nam->sa_family == AF_INET) { 986 bzero(&sad, sizeof (sad)); 987 sin = (struct sockaddr_in *)nmp->nm_nam; 988 sad.sin_family = AF_INET; 989 sad.sin_len = sizeof (struct sockaddr_in); 990 sad.sin_addr.s_addr = sin->sin_addr.s_addr; 991 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred)); 992 rt = rtalloc1_fib((struct sockaddr *)&sad, 0, 0UL, 993 curthread->td_proc->p_fibnum); 994 if (rt != NULL) { 995 if (rt->rt_ifp != NULL && 996 rt->rt_ifa != NULL && 997 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 998 rt->rt_ifa->ifa_addr->sa_family == AF_INET) { 999 sin = (struct sockaddr_in *) 1000 rt->rt_ifa->ifa_addr; 1001 laddr.s_addr = sin->sin_addr.s_addr; 1002 retp = (u_int8_t *)&laddr; 1003 } 1004 RTFREE_LOCKED(rt); 1005 } 1006 CURVNET_RESTORE(); 1007#ifdef INET6 1008 } else if (nmp->nm_nam->sa_family == AF_INET6) { 1009 struct sockaddr_in6 sad6, *sin6; 1010 static struct in6_addr laddr6; 1011 1012 bzero(&sad6, sizeof (sad6)); 1013 sin6 = (struct sockaddr_in6 *)nmp->nm_nam; 1014 sad6.sin6_family = AF_INET6; 1015 sad6.sin6_len = sizeof (struct sockaddr_in6); 1016 sad6.sin6_addr = sin6->sin6_addr; 1017 CURVNET_SET(CRED_TO_VNET(nmp->nm_sockreq.nr_cred)); 1018 rt = rtalloc1_fib((struct sockaddr *)&sad6, 0, 0UL, 1019 curthread->td_proc->p_fibnum); 1020 if (rt != NULL) { 1021 if (rt->rt_ifp != NULL && 1022 rt->rt_ifa != NULL && 1023 ((rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) && 1024 rt->rt_ifa->ifa_addr->sa_family == AF_INET6) { 1025 sin6 = (struct sockaddr_in6 *) 1026 rt->rt_ifa->ifa_addr; 1027 laddr6 = sin6->sin6_addr; 1028 retp = (u_int8_t *)&laddr6; 1029 *isinet6p = 1; 1030 } 1031 RTFREE_LOCKED(rt); 1032 } 1033 CURVNET_RESTORE(); 1034#endif 1035 } 1036 return (retp); 1037} 1038 1039/* 1040 * Copy NFS uid, gids from the cred structure. 1041 */ 1042void 1043newnfs_copyincred(struct ucred *cr, struct nfscred *nfscr) 1044{ 1045 int i; 1046 1047 KASSERT(cr->cr_ngroups >= 0, 1048 ("newnfs_copyincred: negative cr_ngroups")); 1049 nfscr->nfsc_uid = cr->cr_uid; 1050 nfscr->nfsc_ngroups = MIN(cr->cr_ngroups, NFS_MAXGRPS + 1); 1051 for (i = 0; i < nfscr->nfsc_ngroups; i++) 1052 nfscr->nfsc_groups[i] = cr->cr_groups[i]; 1053} 1054 1055 1056/* 1057 * Do any client specific initialization. 1058 */ 1059void 1060nfscl_init(void) 1061{ 1062 static int inited = 0; 1063 1064 if (inited) 1065 return; 1066 inited = 1; 1067 nfscl_inited = 1; 1068 ncl_pbuf_freecnt = nswbuf / 2 + 1; 1069} 1070 1071/* 1072 * Check each of the attributes to be set, to ensure they aren't already 1073 * the correct value. Disable setting ones already correct. 1074 */ 1075int 1076nfscl_checksattr(struct vattr *vap, struct nfsvattr *nvap) 1077{ 1078 1079 if (vap->va_mode != (mode_t)VNOVAL) { 1080 if (vap->va_mode == nvap->na_mode) 1081 vap->va_mode = (mode_t)VNOVAL; 1082 } 1083 if (vap->va_uid != (uid_t)VNOVAL) { 1084 if (vap->va_uid == nvap->na_uid) 1085 vap->va_uid = (uid_t)VNOVAL; 1086 } 1087 if (vap->va_gid != (gid_t)VNOVAL) { 1088 if (vap->va_gid == nvap->na_gid) 1089 vap->va_gid = (gid_t)VNOVAL; 1090 } 1091 if (vap->va_size != VNOVAL) { 1092 if (vap->va_size == nvap->na_size) 1093 vap->va_size = VNOVAL; 1094 } 1095 1096 /* 1097 * We are normally called with only a partially initialized 1098 * VAP. Since the NFSv3 spec says that server may use the 1099 * file attributes to store the verifier, the spec requires 1100 * us to do a SETATTR RPC. FreeBSD servers store the verifier 1101 * in atime, but we can't really assume that all servers will 1102 * so we ensure that our SETATTR sets both atime and mtime. 1103 * Set the VA_UTIMES_NULL flag for this case, so that 1104 * the server's time will be used. This is needed to 1105 * work around a bug in some Solaris servers, where 1106 * setting the time TOCLIENT causes the Setattr RPC 1107 * to return NFS_OK, but not set va_mode. 1108 */ 1109 if (vap->va_mtime.tv_sec == VNOVAL) { 1110 vfs_timestamp(&vap->va_mtime); 1111 vap->va_vaflags |= VA_UTIMES_NULL; 1112 } 1113 if (vap->va_atime.tv_sec == VNOVAL) 1114 vap->va_atime = vap->va_mtime; 1115 return (1); 1116} 1117 1118/* 1119 * Map nfsv4 errors to errno.h errors. 1120 * The uid and gid arguments are only used for NFSERR_BADOWNER and that 1121 * error should only be returned for the Open, Create and Setattr Ops. 1122 * As such, most calls can just pass in 0 for those arguments. 1123 */ 1124APPLESTATIC int 1125nfscl_maperr(struct thread *td, int error, uid_t uid, gid_t gid) 1126{ 1127 struct proc *p; 1128 1129 if (error < 10000) 1130 return (error); 1131 if (td != NULL) 1132 p = td->td_proc; 1133 else 1134 p = NULL; 1135 switch (error) { 1136 case NFSERR_BADOWNER: 1137 tprintf(p, LOG_INFO, 1138 "No name and/or group mapping for uid,gid:(%d,%d)\n", 1139 uid, gid); 1140 return (EPERM); 1141 case NFSERR_BADNAME: 1142 case NFSERR_BADCHAR: 1143 printf("nfsv4 char/name not handled by server\n"); 1144 return (ENOENT); 1145 case NFSERR_STALECLIENTID: 1146 case NFSERR_STALESTATEID: 1147 case NFSERR_EXPIRED: 1148 case NFSERR_BADSTATEID: 1149 case NFSERR_BADSESSION: 1150 printf("nfsv4 recover err returned %d\n", error); 1151 return (EIO); 1152 case NFSERR_BADHANDLE: 1153 case NFSERR_SERVERFAULT: 1154 case NFSERR_BADTYPE: 1155 case NFSERR_FHEXPIRED: 1156 case NFSERR_RESOURCE: 1157 case NFSERR_MOVED: 1158 case NFSERR_NOFILEHANDLE: 1159 case NFSERR_MINORVERMISMATCH: 1160 case NFSERR_OLDSTATEID: 1161 case NFSERR_BADSEQID: 1162 case NFSERR_LEASEMOVED: 1163 case NFSERR_RECLAIMBAD: 1164 case NFSERR_BADXDR: 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 */ 1179int 1180nfscl_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 */ 1226static int 1227nfssvc_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 struct nameidata nd; 1233 struct nfscl_dumpmntopts dumpmntopts; 1234 cap_rights_t rights; 1235 char *buf; 1236 int error; 1237 1238 if (uap->flag & NFSSVC_CBADDSOCK) { 1239 error = copyin(uap->argp, (caddr_t)&nfscbdarg, sizeof(nfscbdarg)); 1240 if (error) 1241 return (error); 1242 /* 1243 * Since we don't know what rights might be required, 1244 * pretend that we need them all. It is better to be too 1245 * careful than too reckless. 1246 */ 1247 error = fget(td, nfscbdarg.sock, 1248 cap_rights_init(&rights, CAP_SOCK_CLIENT), &fp); 1249 if (error) 1250 return (error); 1251 if (fp->f_type != DTYPE_SOCKET) { 1252 fdrop(fp, td); 1253 return (EPERM); 1254 } 1255 error = nfscbd_addsock(fp); 1256 fdrop(fp, td); 1257 if (!error && nfscl_enablecallb == 0) { 1258 nfsv4_cbport = nfscbdarg.port; 1259 nfscl_enablecallb = 1; 1260 } 1261 } else if (uap->flag & NFSSVC_NFSCBD) { 1262 if (uap->argp == NULL) 1263 return (EINVAL); 1264 error = copyin(uap->argp, (caddr_t)&nfscbdarg2, 1265 sizeof(nfscbdarg2)); 1266 if (error) 1267 return (error); 1268 error = nfscbd_nfsd(td, &nfscbdarg2); 1269 } else if (uap->flag & NFSSVC_DUMPMNTOPTS) { 1270 error = copyin(uap->argp, &dumpmntopts, sizeof(dumpmntopts)); 1271 if (error == 0 && (dumpmntopts.ndmnt_blen < 256 || 1272 dumpmntopts.ndmnt_blen > 1024)) 1273 error = EINVAL; 1274 if (error == 0) 1275 error = nfsrv_lookupfilename(&nd, 1276 dumpmntopts.ndmnt_fname, td); 1277 if (error == 0 && strcmp(nd.ni_vp->v_mount->mnt_vfc->vfc_name, 1278 "nfs") != 0) { 1279 vput(nd.ni_vp); 1280 error = EINVAL; 1281 } 1282 if (error == 0) { 1283 buf = malloc(dumpmntopts.ndmnt_blen, M_TEMP, M_WAITOK); 1284 nfscl_retopts(VFSTONFS(nd.ni_vp->v_mount), buf, 1285 dumpmntopts.ndmnt_blen); 1286 vput(nd.ni_vp); 1287 error = copyout(buf, dumpmntopts.ndmnt_buf, 1288 dumpmntopts.ndmnt_blen); 1289 free(buf, M_TEMP); 1290 } 1291 } else { 1292 error = EINVAL; 1293 } 1294 return (error); 1295} 1296 1297extern int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *); 1298 1299/* 1300 * Called once to initialize data structures... 1301 */ 1302static int 1303nfscl_modevent(module_t mod, int type, void *data) 1304{ 1305 int error = 0; 1306 static int loaded = 0; 1307 1308 switch (type) { 1309 case MOD_LOAD: 1310 if (loaded) 1311 return (0); 1312 newnfs_portinit(); 1313 mtx_init(&nfs_clstate_mutex, "nfs_clstate_mutex", NULL, 1314 MTX_DEF); 1315 mtx_init(&ncl_iod_mutex, "ncl_iod_mutex", NULL, MTX_DEF); 1316 nfscl_init(); 1317 NFSD_LOCK(); 1318 nfsrvd_cbinit(0); 1319 NFSD_UNLOCK(); 1320 ncl_call_invalcaches = ncl_invalcaches; 1321 nfsd_call_nfscl = nfssvc_nfscl; 1322 loaded = 1; 1323 break; 1324 1325 case MOD_UNLOAD: 1326 if (nfs_numnfscbd != 0) { 1327 error = EBUSY; 1328 break; 1329 } 1330 1331 /* 1332 * XXX: Unloading of nfscl module is unsupported. 1333 */ 1334#if 0 1335 ncl_call_invalcaches = NULL; 1336 nfsd_call_nfscl = NULL; 1337 /* and get rid of the mutexes */ 1338 mtx_destroy(&nfs_clstate_mutex); 1339 mtx_destroy(&ncl_iod_mutex); 1340 loaded = 0; 1341 break; 1342#else 1343 /* FALLTHROUGH */ 1344#endif 1345 default: 1346 error = EOPNOTSUPP; 1347 break; 1348 } 1349 return error; 1350} 1351static moduledata_t nfscl_mod = { 1352 "nfscl", 1353 nfscl_modevent, 1354 NULL, 1355}; 1356DECLARE_MODULE(nfscl, nfscl_mod, SI_SUB_VFS, SI_ORDER_FIRST); 1357 1358/* So that loader and kldload(2) can find us, wherever we are.. */ 1359MODULE_VERSION(nfscl, 1); 1360MODULE_DEPEND(nfscl, nfscommon, 1, 1, 1); 1361MODULE_DEPEND(nfscl, krpc, 1, 1, 1); 1362MODULE_DEPEND(nfscl, nfssvc, 1, 1, 1); 1363MODULE_DEPEND(nfscl, nfslock, 1, 1, 1); 1364 1365