| File: | src/usr.sbin/amd/amd/nfs_ops.c |
| Warning: | line 472, column 8 Although the value stored to 'colon' is used in the enclosing expression, the value is never actually read from 'colon' |
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| 1 | /* $OpenBSD: nfs_ops.c,v 1.27 2021/10/21 10:55:56 deraadt Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1990 Jan-Simon Pendry |
| 5 | * Copyright (c) 1990 Imperial College of Science, Technology & Medicine |
| 6 | * Copyright (c) 1990, 1993 |
| 7 | * The Regents of the University of California. All rights reserved. |
| 8 | * |
| 9 | * This code is derived from software contributed to Berkeley by |
| 10 | * Jan-Simon Pendry at Imperial College, London. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer. |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer in the |
| 19 | * documentation and/or other materials provided with the distribution. |
| 20 | * 3. Neither the name of the University nor the names of its contributors |
| 21 | * may be used to endorse or promote products derived from this software |
| 22 | * without specific prior written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #include "am.h" |
| 38 | #include <sys/stat.h> |
| 39 | |
| 40 | #ifdef HAS_NFS |
| 41 | |
| 42 | #define NFS |
| 43 | #define NFSCLIENT |
| 44 | |
| 45 | #include "mount.h" |
| 46 | |
| 47 | /* |
| 48 | * Network file system |
| 49 | */ |
| 50 | |
| 51 | /* |
| 52 | * Convert from nfsstat to UN*X error code |
| 53 | */ |
| 54 | #define unx_error(e)((int)(e)) ((int)(e)) |
| 55 | |
| 56 | /* |
| 57 | * The NFS layer maintains a cache of file handles. |
| 58 | * This is *fundamental* to the implementation and |
| 59 | * also allows quick remounting when a filesystem |
| 60 | * is accessed soon after timing out. |
| 61 | * |
| 62 | * The NFS server layer knows to flush this cache |
| 63 | * when a server goes down so avoiding stale handles. |
| 64 | * |
| 65 | * Each cache entry keeps a hard reference to |
| 66 | * the corresponding server. This ensures that |
| 67 | * the server keepalive information is maintained. |
| 68 | * |
| 69 | * The copy of the sockaddr_in here is taken so |
| 70 | * that the port can be twiddled to talk to mountd |
| 71 | * instead of portmap or the NFS server as used |
| 72 | * elsewhere. |
| 73 | * The port# is flushed if a server goes down. |
| 74 | * The IP address is never flushed - we assume |
| 75 | * that the address of a mounted machine never |
| 76 | * changes. If it does, then you have other |
| 77 | * problems... |
| 78 | */ |
| 79 | typedef struct fh_cache fh_cache; |
| 80 | struct fh_cache { |
| 81 | qelem fh_q; /* List header */ |
| 82 | void *fh_wchan; /* Wait channel */ |
| 83 | int fh_error; /* Valid data? */ |
| 84 | int fh_id; /* Unique id */ |
| 85 | int fh_cid; /* Callout id */ |
| 86 | fhstatus fh_handle; /* Handle on filesystem */ |
| 87 | struct sockaddr_in fh_sin; /* Address of mountd */ |
| 88 | fserver *fh_fs; /* Server holding filesystem */ |
| 89 | char *fh_path; /* Filesystem on host */ |
| 90 | }; |
| 91 | |
| 92 | /* |
| 93 | * FH_TTL is the time a file handle will remain in the cache since |
| 94 | * last being used. If the file handle becomes invalid, then it |
| 95 | * will be flushed anyway. |
| 96 | */ |
| 97 | #define FH_TTL(5 * 60) (5 * 60) /* five minutes */ |
| 98 | #define FH_TTL_ERROR(30) (30) /* 30 seconds */ |
| 99 | |
| 100 | static int fh_id = 0; |
| 101 | #define FHID_ALLOC()(++fh_id) (++fh_id) |
| 102 | extern qelem fh_head; |
| 103 | qelem fh_head = { &fh_head, &fh_head }; |
| 104 | |
| 105 | static int call_mountd(fh_cache*, unsigned long, fwd_fun, void *); |
| 106 | |
| 107 | AUTH *nfs_auth; |
| 108 | |
| 109 | static fh_cache * |
| 110 | find_nfs_fhandle_cache(void *idv, int done) |
| 111 | { |
| 112 | fh_cache *fp, *fp2 = 0; |
| 113 | /* XXX EVIL XXX */ |
| 114 | int id = (int) ((long)idv); |
| 115 | |
| 116 | ITER(fp, fh_cache, &fh_head)for ((fp) = ((fh_cache *) (((&fh_head))->q_forw)); (fp ) != ((fh_cache *) (&fh_head)); (fp) = ((fh_cache *) (((qelem *) (fp))->q_forw))) { |
| 117 | if (fp->fh_id == id) { |
| 118 | fp2 = fp; |
| 119 | break; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | #ifdef DEBUG |
| 124 | if (fp2) { |
| 125 | dlog("fh cache gives fp %#x, fs %s", fp2, fp2->fh_path); |
| 126 | } else { |
| 127 | dlog("fh cache search failed"); |
| 128 | } |
| 129 | #endif /* DEBUG */ |
| 130 | |
| 131 | if (fp2 && !done) { |
| 132 | fp2->fh_error = ETIMEDOUT60; |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | return fp2; |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * Called when a filehandle appears |
| 141 | */ |
| 142 | static void |
| 143 | got_nfs_fh(void *pkt, int len, struct sockaddr_in *sa, |
| 144 | struct sockaddr_in *ia, void *idv, int done) |
| 145 | { |
| 146 | fh_cache *fp = find_nfs_fhandle_cache(idv, done); |
| 147 | if (fp) { |
| 148 | fp->fh_handle.fhs_vers = MOUNTVERS((u_long)1); |
| 149 | fp->fh_error = pickup_rpc_reply(pkt, len, &fp->fh_handle, |
| 150 | xdr_fhstatus); |
| 151 | if (!fp->fh_error) { |
| 152 | #ifdef DEBUG |
| 153 | dlog("got filehandle for %s:%s", fp->fh_fs->fs_host, fp->fh_path); |
| 154 | #endif /* DEBUG */ |
| 155 | /* |
| 156 | * Wakeup anything sleeping on this filehandle |
| 157 | */ |
| 158 | if (fp->fh_wchan) { |
| 159 | #ifdef DEBUG |
| 160 | dlog("Calling wakeup on %#x", fp->fh_wchan); |
| 161 | #endif /* DEBUG */ |
| 162 | wakeup(fp->fh_wchan); |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | void |
| 169 | flush_nfs_fhandle_cache(fserver *fs) |
| 170 | { |
| 171 | fh_cache *fp; |
| 172 | ITER(fp, fh_cache, &fh_head)for ((fp) = ((fh_cache *) (((&fh_head))->q_forw)); (fp ) != ((fh_cache *) (&fh_head)); (fp) = ((fh_cache *) (((qelem *) (fp))->q_forw))) { |
| 173 | if (fp->fh_fs == fs || fs == 0) { |
| 174 | fp->fh_sin.sin_port = (u_short) 0; |
| 175 | fp->fh_error = -1; |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | static void |
| 181 | discard_fh(void *arg) |
| 182 | { |
| 183 | fh_cache *fp = arg; |
| 184 | |
| 185 | rem_que(&fp->fh_q); |
| 186 | #ifdef DEBUG |
| 187 | dlog("Discarding filehandle for %s:%s", fp->fh_fs->fs_host, fp->fh_path); |
| 188 | #endif /* DEBUG */ |
| 189 | free_srvr(fp->fh_fs); |
| 190 | free(fp->fh_path); |
| 191 | free(fp); |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * Determine the file handle for a node |
| 196 | */ |
| 197 | static int |
| 198 | prime_nfs_fhandle_cache(char *path, fserver *fs, fhstatus *fhbuf, void *wchan) |
| 199 | { |
| 200 | fh_cache *fp, *fp_save = 0; |
| 201 | int error; |
| 202 | int reuse_id = FALSE(0); |
| 203 | |
| 204 | #ifdef DEBUG |
| 205 | dlog("Searching cache for %s:%s", fs->fs_host, path); |
| 206 | #endif /* DEBUG */ |
| 207 | |
| 208 | /* |
| 209 | * First search the cache |
| 210 | */ |
| 211 | ITER(fp, fh_cache, &fh_head)for ((fp) = ((fh_cache *) (((&fh_head))->q_forw)); (fp ) != ((fh_cache *) (&fh_head)); (fp) = ((fh_cache *) (((qelem *) (fp))->q_forw))) { |
| 212 | if (fs == fp->fh_fs && strcmp(path, fp->fh_path) == 0) { |
| 213 | switch (fp->fh_error) { |
| 214 | case 0: |
| 215 | error = fp->fh_error = unx_error(fp->fh_handle.fhs_stat)((int)(fp->fh_handle.fhs_stat)); |
| 216 | if (error == 0) { |
| 217 | if (fhbuf) |
| 218 | bcopy(&fp->fh_handle, fhbuf, |
| 219 | sizeof(fp->fh_handle)); |
| 220 | if (fp->fh_cid) |
| 221 | untimeout(fp->fh_cid); |
| 222 | fp->fh_cid = timeout(FH_TTL(5 * 60), |
| 223 | discard_fh, fp); |
| 224 | } else if (error == EACCES13) { |
| 225 | /* |
| 226 | * Now decode the file handle return code. |
| 227 | */ |
| 228 | plog(XLOG_INFO0x0010, "Filehandle denied for \"%s:%s\"", |
| 229 | fs->fs_host, path); |
| 230 | } else { |
| 231 | errno(*__errno()) = error; /* XXX */ |
| 232 | plog(XLOG_INFO0x0010, "Filehandle error for \"%s:%s\": %m", |
| 233 | fs->fs_host, path); |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * The error was returned from the remote mount daemon. |
| 238 | * Policy: this error will be cached for now... |
| 239 | */ |
| 240 | return error; |
| 241 | |
| 242 | case -1: |
| 243 | /* |
| 244 | * Still thinking about it, but we can re-use. |
| 245 | */ |
| 246 | fp_save = fp; |
| 247 | reuse_id = TRUE(1); |
| 248 | break; |
| 249 | |
| 250 | default: |
| 251 | /* |
| 252 | * Return the error. |
| 253 | * Policy: make sure we recompute if required again |
| 254 | * in case this was caused by a network failure. |
| 255 | * This can thrash mountd's though... If you find |
| 256 | * your mountd going slowly then: |
| 257 | * 1. Add a fork() loop to main. |
| 258 | * 2. Remove the call to innetgr() and don't use |
| 259 | * netgroups, especially if you don't use YP. |
| 260 | */ |
| 261 | error = fp->fh_error; |
| 262 | fp->fh_error = -1; |
| 263 | return error; |
| 264 | } |
| 265 | break; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | * Not in cache |
| 271 | */ |
| 272 | if (fp_save) { |
| 273 | fp = fp_save; |
| 274 | /* |
| 275 | * Re-use existing slot |
| 276 | */ |
| 277 | untimeout(fp->fh_cid); |
| 278 | free_srvr(fp->fh_fs); |
| 279 | free(fp->fh_path); |
| 280 | } else { |
| 281 | fp = ALLOC(fh_cache)((struct fh_cache *) xmalloc(sizeof(struct fh_cache))); |
| 282 | bzero(fp, sizeof(*fp)); |
| 283 | ins_que(&fp->fh_q, &fh_head); |
| 284 | } |
| 285 | if (!reuse_id) |
| 286 | fp->fh_id = FHID_ALLOC()(++fh_id); |
| 287 | fp->fh_wchan = wchan; |
| 288 | fp->fh_error = -1; |
| 289 | fp->fh_cid = timeout(FH_TTL(5 * 60), discard_fh, fp); |
| 290 | |
| 291 | /* |
| 292 | * If the address has changed then don't try to re-use the |
| 293 | * port information |
| 294 | */ |
| 295 | if (fp->fh_sin.sin_addr.s_addr != fs->fs_ip->sin_addr.s_addr) { |
| 296 | fp->fh_sin = *fs->fs_ip; |
| 297 | fp->fh_sin.sin_port = 0; |
| 298 | } |
| 299 | fp->fh_fs = dup_srvr(fs); |
| 300 | fp->fh_path = strdup(path); |
| 301 | |
| 302 | error = call_mountd(fp, MOUNTPROC_MNT((u_long)1), got_nfs_fh, wchan); |
| 303 | if (error) { |
| 304 | /* |
| 305 | * Local error - cache for a short period |
| 306 | * just to prevent thrashing. |
| 307 | */ |
| 308 | untimeout(fp->fh_cid); |
| 309 | fp->fh_cid = timeout(error < 0 ? 2 * ALLOWED_MOUNT_TIME40 : FH_TTL_ERROR(30), |
| 310 | discard_fh, fp); |
| 311 | fp->fh_error = error; |
| 312 | } else { |
| 313 | error = fp->fh_error; |
| 314 | } |
| 315 | return error; |
| 316 | } |
| 317 | |
| 318 | int |
| 319 | make_nfs_auth(void) |
| 320 | { |
| 321 | /* |
| 322 | * From: Chris Metcalf <metcalf@masala.lcs.mit.edu> |
| 323 | * Use hostd, not just hostname. Note that uids |
| 324 | * and gids and the gidlist are type *int* and not the |
| 325 | * system uid_t and gid_t types. |
| 326 | */ |
| 327 | static int group_wheel = 0; |
| 328 | nfs_auth = authunix_create(hostd, 0, 0, 1, &group_wheel); |
| 329 | if (!nfs_auth) |
| 330 | return ENOBUFS55; |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | static int |
| 335 | call_mountd(fh_cache *fp, u_long proc, fwd_fun f, void *wchan) |
| 336 | { |
| 337 | struct rpc_msg mnt_msg; |
| 338 | int len; |
| 339 | char iobuf[8192]; |
| 340 | int error; |
| 341 | |
| 342 | if (!nfs_auth) { |
| 343 | error = make_nfs_auth(); |
| 344 | if (error) |
| 345 | return error; |
| 346 | } |
| 347 | |
| 348 | if (fp->fh_sin.sin_port == 0) { |
| 349 | u_short port; |
| 350 | error = nfs_srvr_port(fp->fh_fs, &port, wchan); |
| 351 | if (error) |
| 352 | return error; |
| 353 | fp->fh_sin.sin_port = port; |
| 354 | } |
| 355 | |
| 356 | rpc_msg_init(&mnt_msg, MOUNTPROG((u_long)100005), MOUNTVERS((u_long)1), (unsigned long) 0); |
| 357 | len = make_rpc_packet(iobuf, sizeof(iobuf), proc, |
| 358 | &mnt_msg, &fp->fh_path, xdr_nfspath, nfs_auth); |
| 359 | |
| 360 | /* |
| 361 | * XXX EVIL! We cast fh_id to a pointer, then back to an int |
| 362 | * XXX later. |
| 363 | */ |
| 364 | if (len > 0) { |
| 365 | error = fwd_packet(MK_RPC_XID(RPC_XID_MOUNTD, fp->fh_id)((1) | ((fp->fh_id) << 4)), |
| 366 | iobuf, len, &fp->fh_sin, &fp->fh_sin, |
| 367 | (void *)((long)fp->fh_id), f); |
| 368 | } else { |
| 369 | error = -len; |
| 370 | } |
| 371 | /* |
| 372 | * It may be the case that we're sending to the wrong MOUNTD port. This |
| 373 | * occurs if mountd is restarted on the server after the port has been |
| 374 | * looked up and stored in the filehandle cache somewhere. The correct |
| 375 | * solution, if we're going to cache port numbers is to catch the ICMP |
| 376 | * port unreachable reply from the server and cause the portmap request |
| 377 | * to be redone. The quick solution here is to invalidate the MOUNTD |
| 378 | * port. |
| 379 | */ |
| 380 | fp->fh_sin.sin_port = 0; |
| 381 | |
| 382 | return error; |
| 383 | } |
| 384 | |
| 385 | /*-------------------------------------------------------------------------*/ |
| 386 | |
| 387 | /* |
| 388 | * NFS needs the local filesystem, remote filesystem |
| 389 | * remote hostname. |
| 390 | * Local filesystem defaults to remote and vice-versa. |
| 391 | */ |
| 392 | static char * |
| 393 | nfs_match(am_opts *fo) |
| 394 | { |
| 395 | char *xmtab; |
| 396 | if (fo->opt_fs && !fo->opt_rfs) |
| 397 | fo->opt_rfs = fo->opt_fs; |
| 398 | if (!fo->opt_rfs) { |
| 399 | plog(XLOG_USER0x0004, "nfs: no remote filesystem specified"); |
| 400 | return FALSE(0); |
| 401 | } |
| 402 | if (!fo->opt_rhost) { |
| 403 | plog(XLOG_USER0x0004, "nfs: no remote host specified"); |
| 404 | return FALSE(0); |
| 405 | } |
| 406 | /* |
| 407 | * Determine magic cookie to put in mtab |
| 408 | */ |
| 409 | xmtab = xmalloc(strlen(fo->opt_rhost) + strlen(fo->opt_rfs) + 2); |
| 410 | snprintf(xmtab, strlen(fo->opt_rhost) + strlen(fo->opt_rfs) + 2, |
| 411 | "%s:%s", fo->opt_rhost, fo->opt_rfs); |
| 412 | #ifdef DEBUG |
| 413 | dlog("NFS: mounting remote server \"%s\", remote fs \"%s\" on \"%s\"", |
| 414 | fo->opt_rhost, fo->opt_rfs, fo->opt_fs); |
| 415 | #endif /* DEBUG */ |
| 416 | |
| 417 | return xmtab; |
| 418 | } |
| 419 | |
| 420 | /* |
| 421 | * Initialise am structure for nfs |
| 422 | */ |
| 423 | static int |
| 424 | nfs_init(mntfs *mf) |
| 425 | { |
| 426 | if (!mf->mf_private) { |
| 427 | int error; |
| 428 | fhstatus fhs; |
| 429 | |
| 430 | char *colon = strchr(mf->mf_info, ':'); |
| 431 | if (colon == 0) |
| 432 | return ENOENT2; |
| 433 | |
| 434 | error = prime_nfs_fhandle_cache(colon+1, mf->mf_server, |
| 435 | &fhs, mf); |
| 436 | if (!error) { |
| 437 | mf->mf_private = ALLOC(fhstatus)((struct fhstatus *) xmalloc(sizeof(struct fhstatus))); |
| 438 | mf->mf_prfree = free; |
| 439 | bcopy(&fhs, mf->mf_private, sizeof(fhs)); |
| 440 | } |
| 441 | return error; |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | int |
| 448 | mount_nfs_fh(fhstatus *fhp, char *dir, char *fs_name, char *opts, |
| 449 | mntfs *mf) |
| 450 | { |
| 451 | struct nfs_args nfs_args; |
| 452 | struct mntent mnt; |
| 453 | int retry; |
| 454 | char *colon; |
| 455 | /*char *path;*/ |
| 456 | char host[HOST_NAME_MAX255+1 + PATH_MAX1024+2]; |
| 457 | fserver *fs = mf->mf_server; |
| 458 | int flags; |
| 459 | char *xopts; |
| 460 | int error; |
| 461 | #ifdef notdef |
| 462 | unsigned short port; |
| 463 | #endif /* notdef */ |
| 464 | |
| 465 | const char *type = MOUNT_NFS"nfs"; |
| 466 | |
| 467 | bzero(&nfs_args, sizeof(nfs_args)); /* Paranoid */ |
| 468 | |
| 469 | /* |
| 470 | * Extract host name to give to kernel |
| 471 | */ |
| 472 | if (!(colon = strchr(fs_name, ':'))) |
Although the value stored to 'colon' is used in the enclosing expression, the value is never actually read from 'colon' | |
| 473 | return ENOENT2; |
| 474 | strlcpy(host, fs_name, sizeof(host)); |
| 475 | /*path = colon + 1;*/ |
| 476 | |
| 477 | if (mf->mf_remopts && *mf->mf_remopts && !islocalnet(fs->fs_ip->sin_addr.s_addr)) |
| 478 | xopts = strdup(mf->mf_remopts); |
| 479 | else |
| 480 | xopts = strdup(opts); |
| 481 | |
| 482 | bzero(&nfs_args, sizeof(nfs_args)); |
| 483 | |
| 484 | mnt.mnt_dir = dir; |
| 485 | mnt.mnt_fsname = fs_name; |
| 486 | mnt.mnt_type = "nfs"; |
| 487 | mnt.mnt_opts = xopts; |
| 488 | mnt.mnt_freq = 0; |
| 489 | mnt.mnt_passno = 0; |
| 490 | |
| 491 | retry = hasmntval(&mnt, "retry"); |
| 492 | if (retry <= 0) |
| 493 | retry = 1; /* XXX */ |
| 494 | |
| 495 | /*again:*/ |
| 496 | |
| 497 | /* |
| 498 | * set mount args |
| 499 | */ |
| 500 | nfs_args.fh = (void *)fhp->fhs_fhandle; |
| 501 | nfs_args.fhsize = fhp->fhs_size; |
| 502 | nfs_args.version = NFS_ARGSVERSION4; |
| 503 | |
| 504 | nfs_args.hostname = host; |
| 505 | #ifdef HOSTNAMESZ |
| 506 | /* |
| 507 | * Most kernels have a name length restriction. |
| 508 | */ |
| 509 | if (strlen(host) >= HOSTNAMESZ) |
| 510 | strlcpy(host + HOSTNAMESZ - 3, "..", sizeof host - HOSTNAMESZ + 3); |
| 511 | #endif /* HOSTNAMESZ */ |
| 512 | |
| 513 | if ((nfs_args.rsize = hasmntval(&mnt, "rsize"))) |
| 514 | nfs_args.flags |= NFSMNT_RSIZE0x00000004; |
| 515 | |
| 516 | #ifdef NFSMNT_READDIRSIZE0x00020000 |
| 517 | if ((nfs_args.readdirsize = hasmntval(&mnt, "readdirsize"))) { |
| 518 | nfs_args.flags |= NFSMNT_READDIRSIZE0x00020000; |
| 519 | } else if (nfs_args.rsize) { |
| 520 | nfs_args.readdirsize = nfs_args.rsize; |
| 521 | nfs_args.flags |= NFSMNT_READDIRSIZE0x00020000; |
| 522 | } |
| 523 | #endif |
| 524 | |
| 525 | if ((nfs_args.wsize = hasmntval(&mnt, "wsize"))) |
| 526 | nfs_args.flags |= NFSMNT_WSIZE0x00000002; |
| 527 | |
| 528 | if ((nfs_args.timeo = hasmntval(&mnt, "timeo"))) |
| 529 | nfs_args.flags |= NFSMNT_TIMEO0x00000008; |
| 530 | |
| 531 | if ((nfs_args.retrans = hasmntval(&mnt, "retrans"))) |
| 532 | nfs_args.flags |= NFSMNT_RETRANS0x00000010; |
| 533 | |
| 534 | #ifdef NFSMNT_BIODS |
| 535 | if ((nfs_args.biods = hasmntval(&mnt, "biods"))) |
| 536 | nfs_args.flags |= NFSMNT_BIODS; |
| 537 | |
| 538 | #endif /* NFSMNT_BIODS */ |
| 539 | |
| 540 | #ifdef NFSMNT_MAXGRPS0x00000020 |
| 541 | if ((nfs_args.maxgrouplist = hasmntval(&mnt, "maxgroups"))) |
| 542 | nfs_args.flags |= NFSMNT_MAXGRPS0x00000020; |
| 543 | #endif /* NFSMNT_MAXGRPS */ |
| 544 | |
| 545 | #ifdef NFSMNT_READAHEAD0x00002000 |
| 546 | if ((nfs_args.readahead = hasmntval(&mnt, "readahead"))) |
| 547 | nfs_args.flags |= NFSMNT_READAHEAD0x00002000; |
| 548 | #endif /* NFSMNT_READAHEAD */ |
| 549 | |
| 550 | #ifdef notdef |
| 551 | /* |
| 552 | * This isn't supported by the ping algorithm yet. |
| 553 | * In any case, it is all done in nfs_init(). |
| 554 | */ |
| 555 | if ((port = hasmntval(&mnt, "port"))) |
| 556 | sin.sin_port = htons(port)(__uint16_t)(__builtin_constant_p(port) ? (__uint16_t)(((__uint16_t )(port) & 0xffU) << 8 | ((__uint16_t)(port) & 0xff00U ) >> 8) : __swap16md(port)); |
| 557 | else |
| 558 | sin.sin_port = htons(NFS_PORT)(__uint16_t)(__builtin_constant_p(2049) ? (__uint16_t)(((__uint16_t )(2049) & 0xffU) << 8 | ((__uint16_t)(2049) & 0xff00U ) >> 8) : __swap16md(2049)); /* XXX should use portmapper */ |
| 559 | #endif /* notdef */ |
| 560 | |
| 561 | if (hasmntopt(&mnt, "soft") != NULL((void *)0)) |
| 562 | nfs_args.flags |= NFSMNT_SOFT0x00000001; |
| 563 | |
| 564 | #ifdef NFSMNT_SPONGY |
| 565 | if (hasmntopt(&mnt, "spongy") != NULL((void *)0)) { |
| 566 | nfs_args.flags |= NFSMNT_SPONGY; |
| 567 | if (nfs_args.flags & NFSMNT_SOFT0x00000001) { |
| 568 | plog(XLOG_USER0x0004, "Mount opts soft and spongy are incompatible - soft ignored"); |
| 569 | nfs_args.flags &= ~NFSMNT_SOFT0x00000001; |
| 570 | } |
| 571 | } |
| 572 | #endif /* MNTOPT_SPONGY */ |
| 573 | |
| 574 | if (hasmntopt(&mnt, "intr") != NULL((void *)0)) |
| 575 | nfs_args.flags |= NFSMNT_INT0x00000040; |
| 576 | |
| 577 | #ifdef MNTOPT_NODEVS |
| 578 | if (hasmntopt(&mnt, MNTOPT_NODEVS) != NULL((void *)0)) |
| 579 | nfs_args.flags |= NFSMNT_NODEVS; |
| 580 | #endif /* MNTOPT_NODEVS */ |
| 581 | |
| 582 | |
| 583 | if (hasmntopt(&mnt, "noconn") != NULL((void *)0)) |
| 584 | nfs_args.flags |= NFSMNT_NOCONN0x00000080; |
| 585 | |
| 586 | if (hasmntopt(&mnt, "resvport") != NULL((void *)0)) |
| 587 | nfs_args.flags |= NFSMNT_RESVPORT0x00000000; |
| 588 | |
| 589 | #ifdef NFSMNT_PGTHRESH |
| 590 | if ((nfs_args.pg_thresh = hasmntval(&mnt, "pgthresh"))) |
| 591 | nfs_args.flags |= NFSMNT_PGTHRESH; |
| 592 | #endif /* NFSMNT_PGTHRESH */ |
| 593 | |
| 594 | nfs_args.addr = (struct sockaddr *)fs->fs_ip; |
| 595 | nfs_args.addrlen = sizeof(*fs->fs_ip); |
| 596 | nfs_args.sotype = SOCK_DGRAM2; |
| 597 | nfs_args.proto = 0; |
| 598 | |
| 599 | flags = compute_mount_flags(&mnt); |
| 600 | |
| 601 | #ifdef NFSMNT_NOCTO |
| 602 | if (hasmntopt(&mnt, "nocto") != NULL((void *)0)) |
| 603 | nfs_args.flags |= NFSMNT_NOCTO; |
| 604 | #endif /* NFSMNT_NOCTO */ |
| 605 | |
| 606 | if (hasmntopt(&mnt, "tcp") != NULL((void *)0)) |
| 607 | nfs_args.sotype = SOCK_STREAM1; |
| 608 | |
| 609 | |
| 610 | |
| 611 | error = mount_fs(&mnt, flags, (caddr_t) &nfs_args, retry, type); |
| 612 | free(xopts); |
| 613 | return error; |
| 614 | } |
| 615 | |
| 616 | static int |
| 617 | mount_nfs(char *dir, char *fs_name, char *opts, mntfs *mf) |
| 618 | { |
| 619 | #ifdef notdef |
| 620 | int error; |
| 621 | fhstatus fhs; |
| 622 | char *colon; |
| 623 | |
| 624 | if (!(colon = strchr(fs_name, ':'))) |
| 625 | return ENOENT2; |
| 626 | |
| 627 | #ifdef DEBUG |
| 628 | dlog("locating fhandle for %s", fs_name); |
| 629 | #endif /* DEBUG */ |
| 630 | error = prime_nfs_fhandle_cache(colon+1, mf->mf_server, &fhs, NULL((void *)0)); |
| 631 | |
| 632 | if (error) |
| 633 | return error; |
| 634 | |
| 635 | return mount_nfs_fh(&fhs, dir, fs_name, opts, mf); |
| 636 | #endif |
| 637 | if (!mf->mf_private) { |
| 638 | plog(XLOG_ERROR0x0002, "Missing filehandle for %s", fs_name); |
| 639 | return EINVAL22; |
| 640 | } |
| 641 | |
| 642 | return mount_nfs_fh((fhstatus *) mf->mf_private, dir, fs_name, opts, mf); |
| 643 | } |
| 644 | |
| 645 | static int |
| 646 | nfs_fmount(mntfs *mf) |
| 647 | { |
| 648 | int error; |
| 649 | |
| 650 | error = mount_nfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, mf); |
| 651 | |
| 652 | #ifdef DEBUG |
| 653 | if (error) { |
| 654 | errno(*__errno()) = error; |
| 655 | dlog("mount_nfs: %m"); |
| 656 | } |
| 657 | #endif /* DEBUG */ |
| 658 | return error; |
| 659 | } |
| 660 | |
| 661 | static int |
| 662 | nfs_fumount(mntfs *mf) |
| 663 | { |
| 664 | return (umount_fs(mf->mf_mount)); |
| 665 | } |
| 666 | |
| 667 | static void |
| 668 | nfs_umounted(am_node *mp) |
| 669 | { |
| 670 | |
| 671 | #ifdef KICK_KERNEL |
| 672 | /* This should go into the mainline code, not in nfs_ops... */ |
| 673 | |
| 674 | /* |
| 675 | * Run lstat over the underlying directory in |
| 676 | * case this was a direct mount. This will |
| 677 | * get the kernel back in sync with reality. |
| 678 | */ |
| 679 | if (mp->am_parent && mp->am_parent->am_path && |
| 680 | STREQ(mp->am_parent->am_mnt->mf_ops->fs_type, "direct")(strcmp((mp->am_parent->am_mnt->mf_ops->fs_type), ("direct")) == 0)) { |
| 681 | struct stat stb; |
| 682 | pid_t pid; |
| 683 | if ((pid = background()) == 0) { |
| 684 | if (lstat(mp->am_parent->am_path, &stb) < 0) { |
| 685 | plog(XLOG_ERROR0x0002, "lstat(%s) after unmount: %m", mp->am_parent->am_path); |
| 686 | #ifdef DEBUG |
| 687 | } else { |
| 688 | dlog("hack lstat(%s): ok", mp->am_parent->am_path); |
| 689 | #endif /* DEBUG */ |
| 690 | } |
| 691 | _exit(0); |
| 692 | } |
| 693 | } |
| 694 | #endif /* KICK_KERNEL */ |
| 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Network file system |
| 699 | */ |
| 700 | am_ops nfs_ops = { |
| 701 | "nfs", |
| 702 | nfs_match, |
| 703 | nfs_init, |
| 704 | auto_fmount, |
| 705 | nfs_fmount, |
| 706 | auto_fumount, |
| 707 | nfs_fumount, |
| 708 | efs_lookuppn, |
| 709 | efs_readdir, |
| 710 | 0, /* nfs_readlink */ |
| 711 | 0, /* nfs_mounted */ |
| 712 | nfs_umounted, |
| 713 | find_nfs_srvr, |
| 714 | FS_MKMNT0x0008|FS_BACKGROUND(0x0002|0x0010)|FS_AMQINFO0x0040 |
| 715 | }; |
| 716 | |
| 717 | #endif /* HAS_NFS */ |