49#endif /* not lint */
50
51#include <sys/param.h>
52#include <sys/mount.h>
53#include <sys/socket.h>
54#include <sys/stat.h>
55#include <sys/syslog.h>
56
57#include <rpc/rpc.h>
58#include <rpc/pmap_clnt.h>
59#include <rpc/pmap_prot.h>
60
61#include <nfs/rpcv2.h>
62#include <nfs/nfsproto.h>
63#include <nfsclient/nfs.h>
64#include <nfsclient/nfsargs.h>
65
66#include <arpa/inet.h>
67
68#include <ctype.h>
69#include <err.h>
70#include <errno.h>
71#include <fcntl.h>
72#include <netdb.h>
73#include <stdio.h>
74#include <stdlib.h>
75#include <strings.h>
76#include <sysexits.h>
77#include <unistd.h>
78
79#include "mntopts.h"
80#include "mounttab.h"
81
82#define ALTF_BG 0x1
83#define ALTF_NOCONN 0x2
84#define ALTF_DUMBTIMR 0x4
85#define ALTF_INTR 0x8
86#define ALTF_NFSV3 0x20
87#define ALTF_RDIRPLUS 0x40
88#define ALTF_MNTUDP 0x80
89#define ALTF_RESVPORT 0x100
90#define ALTF_SEQPACKET 0x200
91#define ALTF_SOFT 0x800
92#define ALTF_TCP 0x1000
93#define ALTF_PORT 0x2000
94#define ALTF_NFSV2 0x4000
95#define ALTF_ACREGMIN 0x8000
96#define ALTF_ACREGMAX 0x10000
97#define ALTF_ACDIRMIN 0x20000
98#define ALTF_ACDIRMAX 0x40000
99#define ALTF_NOLOCKD 0x80000
100
101struct mntopt mopts[] = {
102 MOPT_STDOPTS,
103 MOPT_FORCE,
104 MOPT_UPDATE,
105 MOPT_ASYNC,
106 { "bg", 0, ALTF_BG, 1 },
107 { "conn", 1, ALTF_NOCONN, 1 },
108 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 },
109 { "intr", 0, ALTF_INTR, 1 },
110 { "nfsv3", 0, ALTF_NFSV3, 1 },
111 { "rdirplus", 0, ALTF_RDIRPLUS, 1 },
112 { "mntudp", 0, ALTF_MNTUDP, 1 },
113 { "resvport", 0, ALTF_RESVPORT, 1 },
114 { "soft", 0, ALTF_SOFT, 1 },
115 { "tcp", 0, ALTF_TCP, 1 },
116 { "port=", 0, ALTF_PORT, 1 },
117 { "nfsv2", 0, ALTF_NFSV2, 1 },
118 { "acregmin=", 0, ALTF_ACREGMIN, 1 },
119 { "acregmax=", 0, ALTF_ACREGMAX, 1 },
120 { "acdirmin=", 0, ALTF_ACDIRMIN, 1 },
121 { "acdirmax=", 0, ALTF_ACDIRMAX, 1 },
122 { "lockd", 1, ALTF_NOLOCKD, 1 },
123 { NULL }
124};
125
126struct nfs_args nfsdefargs = {
127 NFS_ARGSVERSION,
128 (struct sockaddr *)0,
129 sizeof (struct sockaddr_in),
130 SOCK_DGRAM,
131 0,
132 (u_char *)0,
133 0,
134 NFSMNT_RESVPORT,
135 NFS_WSIZE,
136 NFS_RSIZE,
137 NFS_READDIRSIZE,
138 10,
139 NFS_RETRANS,
140 NFS_MAXGRPS,
141 NFS_DEFRAHEAD,
142 0, /* was: NQ_DEFLEASE */
143 NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
144 (char *)0,
145 /* args version 4 */
146 NFS_MINATTRTIMO,
147 NFS_MAXATTRTIMO,
148 NFS_MINDIRATTRTIMO,
149 NFS_MAXDIRATTRTIMO,
150};
151
152/* Table for af,sotype -> netid conversions. */
153struct nc_protos {
154 char *netid;
155 int af;
156 int sotype;
157} nc_protos[] = {
158 {"udp", AF_INET, SOCK_DGRAM},
159 {"tcp", AF_INET, SOCK_STREAM},
160 {"udp6", AF_INET6, SOCK_DGRAM},
161 {"tcp6", AF_INET6, SOCK_STREAM},
162 {NULL}
163};
164
165struct nfhret {
166 u_long stat;
167 long vers;
168 long auth;
169 long fhsize;
170 u_char nfh[NFSX_V3FHMAX];
171};
172#define BGRND 1
173#define ISBGRND 2
174int retrycnt = -1;
175int opflags = 0;
176int nfsproto = IPPROTO_UDP;
177int mnttcp_ok = 1;
178char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
179enum mountmode {
180 ANY,
181 V2,
182 V3
183} mountmode = ANY;
184
185/* Return codes for nfs_tryproto. */
186enum tryret {
187 TRYRET_SUCCESS,
188 TRYRET_TIMEOUT, /* No response received. */
189 TRYRET_REMOTEERR, /* Error received from remote server. */
190 TRYRET_LOCALERR /* Local failure. */
191};
192
| 49#endif /* not lint */
50
51#include <sys/param.h>
52#include <sys/mount.h>
53#include <sys/socket.h>
54#include <sys/stat.h>
55#include <sys/syslog.h>
56
57#include <rpc/rpc.h>
58#include <rpc/pmap_clnt.h>
59#include <rpc/pmap_prot.h>
60
61#include <nfs/rpcv2.h>
62#include <nfs/nfsproto.h>
63#include <nfsclient/nfs.h>
64#include <nfsclient/nfsargs.h>
65
66#include <arpa/inet.h>
67
68#include <ctype.h>
69#include <err.h>
70#include <errno.h>
71#include <fcntl.h>
72#include <netdb.h>
73#include <stdio.h>
74#include <stdlib.h>
75#include <strings.h>
76#include <sysexits.h>
77#include <unistd.h>
78
79#include "mntopts.h"
80#include "mounttab.h"
81
82#define ALTF_BG 0x1
83#define ALTF_NOCONN 0x2
84#define ALTF_DUMBTIMR 0x4
85#define ALTF_INTR 0x8
86#define ALTF_NFSV3 0x20
87#define ALTF_RDIRPLUS 0x40
88#define ALTF_MNTUDP 0x80
89#define ALTF_RESVPORT 0x100
90#define ALTF_SEQPACKET 0x200
91#define ALTF_SOFT 0x800
92#define ALTF_TCP 0x1000
93#define ALTF_PORT 0x2000
94#define ALTF_NFSV2 0x4000
95#define ALTF_ACREGMIN 0x8000
96#define ALTF_ACREGMAX 0x10000
97#define ALTF_ACDIRMIN 0x20000
98#define ALTF_ACDIRMAX 0x40000
99#define ALTF_NOLOCKD 0x80000
100
101struct mntopt mopts[] = {
102 MOPT_STDOPTS,
103 MOPT_FORCE,
104 MOPT_UPDATE,
105 MOPT_ASYNC,
106 { "bg", 0, ALTF_BG, 1 },
107 { "conn", 1, ALTF_NOCONN, 1 },
108 { "dumbtimer", 0, ALTF_DUMBTIMR, 1 },
109 { "intr", 0, ALTF_INTR, 1 },
110 { "nfsv3", 0, ALTF_NFSV3, 1 },
111 { "rdirplus", 0, ALTF_RDIRPLUS, 1 },
112 { "mntudp", 0, ALTF_MNTUDP, 1 },
113 { "resvport", 0, ALTF_RESVPORT, 1 },
114 { "soft", 0, ALTF_SOFT, 1 },
115 { "tcp", 0, ALTF_TCP, 1 },
116 { "port=", 0, ALTF_PORT, 1 },
117 { "nfsv2", 0, ALTF_NFSV2, 1 },
118 { "acregmin=", 0, ALTF_ACREGMIN, 1 },
119 { "acregmax=", 0, ALTF_ACREGMAX, 1 },
120 { "acdirmin=", 0, ALTF_ACDIRMIN, 1 },
121 { "acdirmax=", 0, ALTF_ACDIRMAX, 1 },
122 { "lockd", 1, ALTF_NOLOCKD, 1 },
123 { NULL }
124};
125
126struct nfs_args nfsdefargs = {
127 NFS_ARGSVERSION,
128 (struct sockaddr *)0,
129 sizeof (struct sockaddr_in),
130 SOCK_DGRAM,
131 0,
132 (u_char *)0,
133 0,
134 NFSMNT_RESVPORT,
135 NFS_WSIZE,
136 NFS_RSIZE,
137 NFS_READDIRSIZE,
138 10,
139 NFS_RETRANS,
140 NFS_MAXGRPS,
141 NFS_DEFRAHEAD,
142 0, /* was: NQ_DEFLEASE */
143 NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
144 (char *)0,
145 /* args version 4 */
146 NFS_MINATTRTIMO,
147 NFS_MAXATTRTIMO,
148 NFS_MINDIRATTRTIMO,
149 NFS_MAXDIRATTRTIMO,
150};
151
152/* Table for af,sotype -> netid conversions. */
153struct nc_protos {
154 char *netid;
155 int af;
156 int sotype;
157} nc_protos[] = {
158 {"udp", AF_INET, SOCK_DGRAM},
159 {"tcp", AF_INET, SOCK_STREAM},
160 {"udp6", AF_INET6, SOCK_DGRAM},
161 {"tcp6", AF_INET6, SOCK_STREAM},
162 {NULL}
163};
164
165struct nfhret {
166 u_long stat;
167 long vers;
168 long auth;
169 long fhsize;
170 u_char nfh[NFSX_V3FHMAX];
171};
172#define BGRND 1
173#define ISBGRND 2
174int retrycnt = -1;
175int opflags = 0;
176int nfsproto = IPPROTO_UDP;
177int mnttcp_ok = 1;
178char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
179enum mountmode {
180 ANY,
181 V2,
182 V3
183} mountmode = ANY;
184
185/* Return codes for nfs_tryproto. */
186enum tryret {
187 TRYRET_SUCCESS,
188 TRYRET_TIMEOUT, /* No response received. */
189 TRYRET_REMOTEERR, /* Error received from remote server. */
190 TRYRET_LOCALERR /* Local failure. */
191};
192
|
200enum tryret nfs_tryproto(struct nfs_args *nfsargsp, struct addrinfo *ai,
201 char *hostp, char *spec, char **errstr);
202enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
203
204/*
205 * Used to set mount flags with getmntopts. Call with dir=TRUE to
206 * initialize altflags from the current mount flags. Call with
207 * dir=FALSE to update mount flags with the new value of altflags after
208 * the call to getmntopts.
209 */
210static void
211set_flags(int* altflags, int* nfsflags, int dir)
212{
213#define F2(af, nf) \
214 if (dir) { \
215 if (*nfsflags & NFSMNT_##nf) \
216 *altflags |= ALTF_##af; \
217 else \
218 *altflags &= ~ALTF_##af; \
219 } else { \
220 if (*altflags & ALTF_##af) \
221 *nfsflags |= NFSMNT_##nf; \
222 else \
223 *nfsflags &= ~NFSMNT_##nf; \
224 }
225#define F(f) F2(f,f)
226
227 F(NOCONN);
228 F(DUMBTIMR);
229 F2(INTR, INT);
230 F(RDIRPLUS);
231 F(RESVPORT);
232 F(SOFT);
233 F(NOLOCKD);
234
235#undef F
236#undef F2
237}
238
239int
240main(argc, argv)
241 int argc;
242 char *argv[];
243{
244 int c;
245 struct nfs_args *nfsargsp;
246 struct nfs_args nfsargs;
247 int mntflags, altflags, nfssvc_flag, num;
248 char *name, *p, *spec;
249 char mntpath[MAXPATHLEN];
250 struct vfsconf vfc;
251 int error = 0;
252
253 mntflags = 0;
254 altflags = 0;
255 nfsargs = nfsdefargs;
256 nfsargsp = &nfsargs;
257 while ((c = getopt(argc, argv,
258 "23a:bcdD:g:I:iLl:No:PpR:r:sTt:w:x:U")) != -1)
259 switch (c) {
260 case '2':
261 mountmode = V2;
262 break;
263 case '3':
264 mountmode = V3;
265 break;
266 case 'a':
267 num = strtol(optarg, &p, 10);
268 if (*p || num < 0)
269 errx(1, "illegal -a value -- %s", optarg);
270 nfsargsp->readahead = num;
271 nfsargsp->flags |= NFSMNT_READAHEAD;
272 break;
273 case 'b':
274 opflags |= BGRND;
275 break;
276 case 'c':
277 nfsargsp->flags |= NFSMNT_NOCONN;
278 break;
279 case 'D':
280 num = strtol(optarg, &p, 10);
281 if (*p || num <= 0)
282 errx(1, "illegal -D value -- %s", optarg);
283 nfsargsp->deadthresh = num;
284 nfsargsp->flags |= NFSMNT_DEADTHRESH;
285 break;
286 case 'd':
287 nfsargsp->flags |= NFSMNT_DUMBTIMR;
288 break;
289#if 0 /* XXXX */
290 case 'g':
291 num = strtol(optarg, &p, 10);
292 if (*p || num <= 0)
293 errx(1, "illegal -g value -- %s", optarg);
294 set_rpc_maxgrouplist(num);
295 nfsargsp->maxgrouplist = num;
296 nfsargsp->flags |= NFSMNT_MAXGRPS;
297 break;
298#endif
299 case 'I':
300 num = strtol(optarg, &p, 10);
301 if (*p || num <= 0)
302 errx(1, "illegal -I value -- %s", optarg);
303 nfsargsp->readdirsize = num;
304 nfsargsp->flags |= NFSMNT_READDIRSIZE;
305 break;
306 case 'i':
307 nfsargsp->flags |= NFSMNT_INT;
308 break;
309 case 'L':
310 nfsargsp->flags |= NFSMNT_NOLOCKD;
311 break;
312 case 'l':
313 nfsargsp->flags |= NFSMNT_RDIRPLUS;
314 break;
315 case 'N':
316 nfsargsp->flags &= ~NFSMNT_RESVPORT;
317 break;
318 case 'o':
319 altflags = 0;
320 set_flags(&altflags, &nfsargsp->flags, TRUE);
321 if (mountmode == V2)
322 altflags |= ALTF_NFSV2;
323 else if (mountmode == V3)
324 altflags |= ALTF_NFSV3;
325 getmntopts(optarg, mopts, &mntflags, &altflags);
326 set_flags(&altflags, &nfsargsp->flags, FALSE);
327 /*
328 * Handle altflags which don't map directly to
329 * mount flags.
330 */
331 if(altflags & ALTF_BG)
332 opflags |= BGRND;
333 if(altflags & ALTF_MNTUDP)
334 mnttcp_ok = 0;
335 if(altflags & ALTF_TCP) {
336 nfsargsp->sotype = SOCK_STREAM;
337 nfsproto = IPPROTO_TCP;
338 }
339 if(altflags & ALTF_PORT) {
340 /*
341 * XXX Converting from a string to an int
342 * and back again is silly, and we should
343 * allow /etc/services names.
344 */
345 asprintf(&portspec, "%d",
346 atoi(strstr(optarg, "port=") + 5));
347 if (portspec == NULL)
348 err(1, "asprintf");
349 }
350 mountmode = ANY;
351 if(altflags & ALTF_NFSV2)
352 mountmode = V2;
353 if(altflags & ALTF_NFSV3)
354 mountmode = V3;
355 if(altflags & ALTF_ACREGMIN)
356 nfsargsp->acregmin = atoi(strstr(optarg,
357 "acregmin=") + 9);
358 if(altflags & ALTF_ACREGMAX)
359 nfsargsp->acregmax = atoi(strstr(optarg,
360 "acregmax=") + 9);
361 if(altflags & ALTF_ACDIRMIN)
362 nfsargsp->acdirmin = atoi(strstr(optarg,
363 "acdirmin=") + 9);
364 if(altflags & ALTF_ACDIRMAX)
365 nfsargsp->acdirmax = atoi(strstr(optarg,
366 "acdirmax=") + 9);
367 break;
368 case 'P':
369 /* obsolete for NFSMNT_RESVPORT, now default */
370 break;
371 case 'R':
372 num = strtol(optarg, &p, 10);
373 if (*p || num < 0)
374 errx(1, "illegal -R value -- %s", optarg);
375 retrycnt = num;
376 break;
377 case 'r':
378 num = strtol(optarg, &p, 10);
379 if (*p || num <= 0)
380 errx(1, "illegal -r value -- %s", optarg);
381 nfsargsp->rsize = num;
382 nfsargsp->flags |= NFSMNT_RSIZE;
383 break;
384 case 's':
385 nfsargsp->flags |= NFSMNT_SOFT;
386 break;
387 case 'T':
388 nfsargsp->sotype = SOCK_STREAM;
389 nfsproto = IPPROTO_TCP;
390 break;
391 case 't':
392 num = strtol(optarg, &p, 10);
393 if (*p || num <= 0)
394 errx(1, "illegal -t value -- %s", optarg);
395 nfsargsp->timeo = num;
396 nfsargsp->flags |= NFSMNT_TIMEO;
397 break;
398 case 'w':
399 num = strtol(optarg, &p, 10);
400 if (*p || num <= 0)
401 errx(1, "illegal -w value -- %s", optarg);
402 nfsargsp->wsize = num;
403 nfsargsp->flags |= NFSMNT_WSIZE;
404 break;
405 case 'x':
406 num = strtol(optarg, &p, 10);
407 if (*p || num <= 0)
408 errx(1, "illegal -x value -- %s", optarg);
409 nfsargsp->retrans = num;
410 nfsargsp->flags |= NFSMNT_RETRANS;
411 break;
412 case 'U':
413 mnttcp_ok = 0;
414 break;
415 default:
416 usage();
417 break;
418 }
419 argc -= optind;
420 argv += optind;
421
422 if (argc != 2) {
423 usage();
424 /* NOTREACHED */
425 }
426
427 spec = *argv++;
428 name = *argv;
429
430 if (retrycnt == -1)
431 /* The default is to keep retrying forever. */
432 retrycnt = 0;
433 if (!getnfsargs(spec, nfsargsp))
434 exit(1);
435
436 /* resolve the mountpoint with realpath(3) */
437 (void)checkpath(name, mntpath);
438
439 error = getvfsbyname("nfs", &vfc);
440 if (error && vfsisloadable("nfs")) {
441 if(vfsload("nfs"))
442 err(EX_OSERR, "vfsload(nfs)");
443 endvfsent(); /* clear cache */
444 error = getvfsbyname("nfs", &vfc);
445 }
446 if (error)
447 errx(EX_OSERR, "nfs filesystem is not available");
448
449 if (mount(vfc.vfc_name, mntpath, mntflags, nfsargsp))
450 err(1, "%s", mntpath);
451
452 exit(0);
453}
454
455int
456getnfsargs(spec, nfsargsp)
457 char *spec;
458 struct nfs_args *nfsargsp;
459{
460 struct addrinfo hints, *ai_nfs, *ai;
461 enum tryret ret;
462 int ecode, speclen, remoteerr;
463 char *hostp, *delimp, *errstr;
464 size_t len;
465 static char nam[MNAMELEN + 1];
466
467 if ((delimp = strrchr(spec, ':')) != NULL) {
468 hostp = spec;
469 spec = delimp + 1;
470 } else if ((delimp = strrchr(spec, '@')) != NULL) {
471 warnx("path@server syntax is deprecated, use server:path");
472 hostp = delimp + 1;
473 } else {
474 warnx("no <host>:<dirpath> nfs-name");
475 return (0);
476 }
477 *delimp = '\0';
478
479 /*
480 * If there has been a trailing slash at mounttime it seems
481 * that some mountd implementations fail to remove the mount
482 * entries from their mountlist while unmounting.
483 */
484 for (speclen = strlen(spec);
485 speclen > 1 && spec[speclen - 1] == '/';
486 speclen--)
487 spec[speclen - 1] = '\0';
488 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
489 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
490 return (0);
491 }
492 /* Make both '@' and ':' notations equal */
493 if (*hostp != '\0') {
494 len = strlen(hostp);
495 memmove(nam, hostp, len);
496 nam[len] = ':';
497 memmove(nam + len + 1, spec, speclen);
498 nam[len + speclen + 1] = '\0';
499 }
500
501 /*
502 * Handle an internet host address.
503 */
504 memset(&hints, 0, sizeof hints);
505 hints.ai_flags = AI_NUMERICHOST;
506 hints.ai_socktype = nfsargsp->sotype;
507 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
508 hints.ai_flags = 0;
509 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
510 != 0) {
511 if (portspec == NULL)
512 errx(1, "%s: %s", hostp, gai_strerror(ecode));
513 else
514 errx(1, "%s:%s: %s", hostp, portspec,
515 gai_strerror(ecode));
516 return (0);
517 }
518 }
519
520 ret = TRYRET_LOCALERR;
521 for (;;) {
522 /*
523 * Try each entry returned by getaddrinfo(). Note the
524 * occurence of remote errors by setting `remoteerr'.
525 */
526 remoteerr = 0;
527 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
528 ret = nfs_tryproto(nfsargsp, ai, hostp, spec, &errstr);
529 if (ret == TRYRET_SUCCESS)
530 break;
531 if (ret != TRYRET_LOCALERR)
532 remoteerr = 1;
533 if ((opflags & ISBGRND) == 0)
534 fprintf(stderr, "%s\n", errstr);
535 }
536 if (ret == TRYRET_SUCCESS)
537 break;
538
539 /* Exit if all errors were local. */
540 if (!remoteerr)
541 exit(1);
542
543 /*
544 * If retrycnt == 0, we are to keep retrying forever.
545 * Otherwise decrement it, and exit if it hits zero.
546 */
547 if (retrycnt != 0 && --retrycnt == 0)
548 exit(1);
549
550 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
551 warnx("Cannot immediately mount %s:%s, backgrounding",
552 hostp, spec);
553 opflags |= ISBGRND;
554 if (daemon(0, 0) != 0)
555 err(1, "daemon");
556 }
557 sleep(60);
558 }
559 freeaddrinfo(ai_nfs);
560 nfsargsp->hostname = nam;
561 /* Add mounted filesystem to PATH_MOUNTTAB */
562 if (!add_mtab(hostp, spec))
563 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
564 return (1);
565}
566
567/*
568 * Try to set up the NFS arguments according to the address
569 * family, protocol (and possibly port) specified in `ai'.
570 *
571 * Returns TRYRET_SUCCESS if successful, or:
572 * TRYRET_TIMEOUT The server did not respond.
573 * TRYRET_REMOTEERR The server reported an error.
574 * TRYRET_LOCALERR Local failure.
575 *
576 * In all error cases, *errstr will be set to a statically-allocated string
577 * describing the error.
578 */
579enum tryret
580nfs_tryproto(struct nfs_args *nfsargsp, struct addrinfo *ai, char *hostp,
581 char *spec, char **errstr)
582{
583 static char errbuf[256];
584 struct sockaddr_storage nfs_ss;
585 struct netbuf nfs_nb;
586 struct nfhret nfhret;
587 struct timeval try;
588 struct rpc_err rpcerr;
589 CLIENT *clp;
590 struct netconfig *nconf, *nconf_mnt;
591 char *netid, *netid_mnt;
592 int doconnect, nfsvers, mntvers;
593 enum clnt_stat stat;
594 enum mountmode trymntmode;
595
596 trymntmode = mountmode;
597 errbuf[0] = '\0';
598 *errstr = errbuf;
599
600 if ((netid = netidbytype(ai->ai_family, nfsargsp->sotype)) == NULL) {
601 snprintf(errbuf, sizeof errbuf,
602 "af %d sotype %d not supported", ai->ai_family,
603 nfsargsp->sotype);
604 return (TRYRET_LOCALERR);
605 }
606 if ((nconf = getnetconf_cached(netid)) == NULL) {
607 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
608 return (TRYRET_LOCALERR);
609 }
610 /* The RPCPROG_MNT netid may be different. */
611 if (mnttcp_ok) {
612 netid_mnt = netid;
613 nconf_mnt = nconf;
614 } else {
615 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
616 == NULL) {
617 snprintf(errbuf, sizeof errbuf,
618 "af %d sotype SOCK_DGRAM not supported",
619 ai->ai_family);
620 return (TRYRET_LOCALERR);
621 }
622 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
623 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
624 nc_sperror());
625 return (TRYRET_LOCALERR);
626 }
627 }
628
629tryagain:
630 if (trymntmode == V2) {
631 nfsvers = 2;
632 mntvers = 1;
633 } else {
634 nfsvers = 3;
635 mntvers = 3;
636 }
637
638 if (portspec != NULL) {
639 /* `ai' contains the complete nfsd sockaddr. */
640 nfs_nb.buf = ai->ai_addr;
641 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
642 } else {
643 /* Ask the remote rpcbind. */
644 nfs_nb.buf = &nfs_ss;
645 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
646
647 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb,
648 hostp)) {
649 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
650 trymntmode == ANY) {
651 trymntmode = V2;
652 goto tryagain;
653 }
654 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
655 netid, hostp, spec,
656 clnt_spcreateerror("RPCPROG_NFS"));
657 return (returncode(rpc_createerr.cf_stat,
658 &rpc_createerr.cf_error));
659 }
660 }
661
662 /* Check that the server (nfsd) responds on the port we have chosen. */
663 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, RPCPROG_NFS, nfsvers,
664 0, 0);
665 if (clp == NULL) {
666 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
667 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
668 return (returncode(rpc_createerr.cf_stat,
669 &rpc_createerr.cf_error));
670 }
671 if (nfsargsp->sotype == SOCK_DGRAM) {
672 /*
673 * Use connect(), to match what the kernel does. This
674 * catches cases where the server responds from the
675 * wrong source address.
676 */
677 doconnect = 1;
678 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
679 clnt_destroy(clp);
680 snprintf(errbuf, sizeof errbuf,
681 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
682 spec);
683 return (TRYRET_LOCALERR);
684 }
685 }
686
687 try.tv_sec = 10;
688 try.tv_usec = 0;
689 stat = clnt_call(clp, NFSPROC_NULL, xdr_void, NULL, xdr_void, NULL,
690 try);
691 if (stat != RPC_SUCCESS) {
692 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
693 clnt_destroy(clp);
694 trymntmode = V2;
695 goto tryagain;
696 }
697 clnt_geterr(clp, &rpcerr);
698 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
699 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
700 clnt_destroy(clp);
701 return (returncode(stat, &rpcerr));
702 }
703 clnt_destroy(clp);
704
705 /* Send the RPCMNT_MOUNT RPC to get the root filehandle. */
706 try.tv_sec = 10;
707 try.tv_usec = 0;
708 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, nconf_mnt);
709 if (clp == NULL) {
710 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
711 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
712 return (returncode(rpc_createerr.cf_stat,
713 &rpc_createerr.cf_error));
714 }
715 clp->cl_auth = authsys_create_default();
716 nfhret.auth = RPCAUTH_UNIX;
717 nfhret.vers = mntvers;
718 stat = clnt_call(clp, RPCMNT_MOUNT, xdr_dir, spec, xdr_fh, &nfhret,
719 try);
720 auth_destroy(clp->cl_auth);
721 if (stat != RPC_SUCCESS) {
722 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
723 clnt_destroy(clp);
724 trymntmode = V2;
725 goto tryagain;
726 }
727 clnt_geterr(clp, &rpcerr);
728 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
729 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
730 clnt_destroy(clp);
731 return (returncode(stat, &rpcerr));
732 }
733 clnt_destroy(clp);
734
735 if (nfhret.stat != 0) {
736 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
737 hostp, spec, strerror(nfhret.stat));
738 return (TRYRET_REMOTEERR);
739 }
740
741 /*
742 * Store the filehandle and server address in nfsargsp, making
743 * sure to copy any locally allocated structures.
744 */
745 nfsargsp->addrlen = nfs_nb.len;
746 nfsargsp->addr = malloc(nfsargsp->addrlen);
747 nfsargsp->fhsize = nfhret.fhsize;
748 nfsargsp->fh = malloc(nfsargsp->fhsize);
749 if (nfsargsp->addr == NULL || nfsargsp->fh == NULL)
750 err(1, "malloc");
751 bcopy(nfs_nb.buf, nfsargsp->addr, nfsargsp->addrlen);
752 bcopy(nfhret.nfh, nfsargsp->fh, nfsargsp->fhsize);
753
754 if (nfsvers == 3)
755 nfsargsp->flags |= NFSMNT_NFSV3;
756 else
757 nfsargsp->flags &= ~NFSMNT_NFSV3;
758
759 return (TRYRET_SUCCESS);
760}
761
762
763/*
764 * Catagorise a RPC return status and error into an `enum tryret'
765 * return code.
766 */
767enum tryret
768returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
769{
770 switch (stat) {
771 case RPC_TIMEDOUT:
772 return (TRYRET_TIMEOUT);
773 case RPC_PMAPFAILURE:
774 case RPC_PROGNOTREGISTERED:
775 case RPC_PROGVERSMISMATCH:
776 /* XXX, these can be local or remote. */
777 case RPC_CANTSEND:
778 case RPC_CANTRECV:
779 return (TRYRET_REMOTEERR);
780 case RPC_SYSTEMERROR:
781 switch (rpcerr->re_errno) {
782 case ETIMEDOUT:
783 return (TRYRET_TIMEOUT);
784 case ENOMEM:
785 break;
786 default:
787 return (TRYRET_REMOTEERR);
788 }
789 /* FALLTHROUGH */
790 default:
791 break;
792 }
793 return (TRYRET_LOCALERR);
794}
795
796/*
797 * Look up a netid based on an address family and socket type.
798 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
799 *
800 * XXX there should be a library function for this.
801 */
802char *
803netidbytype(int af, int sotype) {
804 struct nc_protos *p;
805
806 for (p = nc_protos; p->netid != NULL; p++) {
807 if (af != p->af || sotype != p->sotype)
808 continue;
809 return (p->netid);
810 }
811 return (NULL);
812}
813
814/*
815 * Look up a netconfig entry based on a netid, and cache the result so
816 * that we don't need to remember to call freenetconfigent().
817 *
818 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
819 * work on failure.
820 */
821struct netconfig *
822getnetconf_cached(const char *netid) {
823 static struct nc_entry {
824 struct netconfig *nconf;
825 struct nc_entry *next;
826 } *head;
827 struct nc_entry *p;
828 struct netconfig *nconf;
829
830 for (p = head; p != NULL; p = p->next)
831 if (strcmp(netid, p->nconf->nc_netid) == 0)
832 return (p->nconf);
833
834 if ((nconf = getnetconfigent(netid)) == NULL)
835 return (NULL);
836 if ((p = malloc(sizeof(*p))) == NULL)
837 err(1, "malloc");
838 p->nconf = nconf;
839 p->next = head;
840 head = p;
841
842 return (p->nconf);
843}
844
845/*
846 * xdr routines for mount rpc's
847 */
848int
849xdr_dir(xdrsp, dirp)
850 XDR *xdrsp;
851 char *dirp;
852{
853 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
854}
855
856int
857xdr_fh(xdrsp, np)
858 XDR *xdrsp;
859 struct nfhret *np;
860{
861 int i;
862 long auth, authcnt, authfnd = 0;
863
864 if (!xdr_u_long(xdrsp, &np->stat))
865 return (0);
866 if (np->stat)
867 return (1);
868 switch (np->vers) {
869 case 1:
870 np->fhsize = NFSX_V2FH;
871 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH));
872 case 3:
873 if (!xdr_long(xdrsp, &np->fhsize))
874 return (0);
875 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX)
876 return (0);
877 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
878 return (0);
879 if (!xdr_long(xdrsp, &authcnt))
880 return (0);
881 for (i = 0; i < authcnt; i++) {
882 if (!xdr_long(xdrsp, &auth))
883 return (0);
884 if (auth == np->auth)
885 authfnd++;
886 }
887 /*
888 * Some servers, such as DEC's OSF/1 return a nil authenticator
889 * list to indicate RPCAUTH_UNIX.
890 */
891 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX))
892 np->stat = EAUTH;
893 return (1);
894 };
895 return (0);
896}
897
898void
899usage()
900{
901 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
902"usage: mount_nfs [-23KNPTUbcdilqs] [-D deadthresh] [-I readdirsize]",
903" [-R retrycnt] [-a maxreadahead]",
904" [-g maxgroups] [-m realm] [-o options] [-r readsize]",
905" [-t timeout] [-w writesize] [-x retrans] rhost:path node");
906 exit(1);
907}
| 200enum tryret nfs_tryproto(struct nfs_args *nfsargsp, struct addrinfo *ai,
201 char *hostp, char *spec, char **errstr);
202enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
203
204/*
205 * Used to set mount flags with getmntopts. Call with dir=TRUE to
206 * initialize altflags from the current mount flags. Call with
207 * dir=FALSE to update mount flags with the new value of altflags after
208 * the call to getmntopts.
209 */
210static void
211set_flags(int* altflags, int* nfsflags, int dir)
212{
213#define F2(af, nf) \
214 if (dir) { \
215 if (*nfsflags & NFSMNT_##nf) \
216 *altflags |= ALTF_##af; \
217 else \
218 *altflags &= ~ALTF_##af; \
219 } else { \
220 if (*altflags & ALTF_##af) \
221 *nfsflags |= NFSMNT_##nf; \
222 else \
223 *nfsflags &= ~NFSMNT_##nf; \
224 }
225#define F(f) F2(f,f)
226
227 F(NOCONN);
228 F(DUMBTIMR);
229 F2(INTR, INT);
230 F(RDIRPLUS);
231 F(RESVPORT);
232 F(SOFT);
233 F(NOLOCKD);
234
235#undef F
236#undef F2
237}
238
239int
240main(argc, argv)
241 int argc;
242 char *argv[];
243{
244 int c;
245 struct nfs_args *nfsargsp;
246 struct nfs_args nfsargs;
247 int mntflags, altflags, nfssvc_flag, num;
248 char *name, *p, *spec;
249 char mntpath[MAXPATHLEN];
250 struct vfsconf vfc;
251 int error = 0;
252
253 mntflags = 0;
254 altflags = 0;
255 nfsargs = nfsdefargs;
256 nfsargsp = &nfsargs;
257 while ((c = getopt(argc, argv,
258 "23a:bcdD:g:I:iLl:No:PpR:r:sTt:w:x:U")) != -1)
259 switch (c) {
260 case '2':
261 mountmode = V2;
262 break;
263 case '3':
264 mountmode = V3;
265 break;
266 case 'a':
267 num = strtol(optarg, &p, 10);
268 if (*p || num < 0)
269 errx(1, "illegal -a value -- %s", optarg);
270 nfsargsp->readahead = num;
271 nfsargsp->flags |= NFSMNT_READAHEAD;
272 break;
273 case 'b':
274 opflags |= BGRND;
275 break;
276 case 'c':
277 nfsargsp->flags |= NFSMNT_NOCONN;
278 break;
279 case 'D':
280 num = strtol(optarg, &p, 10);
281 if (*p || num <= 0)
282 errx(1, "illegal -D value -- %s", optarg);
283 nfsargsp->deadthresh = num;
284 nfsargsp->flags |= NFSMNT_DEADTHRESH;
285 break;
286 case 'd':
287 nfsargsp->flags |= NFSMNT_DUMBTIMR;
288 break;
289#if 0 /* XXXX */
290 case 'g':
291 num = strtol(optarg, &p, 10);
292 if (*p || num <= 0)
293 errx(1, "illegal -g value -- %s", optarg);
294 set_rpc_maxgrouplist(num);
295 nfsargsp->maxgrouplist = num;
296 nfsargsp->flags |= NFSMNT_MAXGRPS;
297 break;
298#endif
299 case 'I':
300 num = strtol(optarg, &p, 10);
301 if (*p || num <= 0)
302 errx(1, "illegal -I value -- %s", optarg);
303 nfsargsp->readdirsize = num;
304 nfsargsp->flags |= NFSMNT_READDIRSIZE;
305 break;
306 case 'i':
307 nfsargsp->flags |= NFSMNT_INT;
308 break;
309 case 'L':
310 nfsargsp->flags |= NFSMNT_NOLOCKD;
311 break;
312 case 'l':
313 nfsargsp->flags |= NFSMNT_RDIRPLUS;
314 break;
315 case 'N':
316 nfsargsp->flags &= ~NFSMNT_RESVPORT;
317 break;
318 case 'o':
319 altflags = 0;
320 set_flags(&altflags, &nfsargsp->flags, TRUE);
321 if (mountmode == V2)
322 altflags |= ALTF_NFSV2;
323 else if (mountmode == V3)
324 altflags |= ALTF_NFSV3;
325 getmntopts(optarg, mopts, &mntflags, &altflags);
326 set_flags(&altflags, &nfsargsp->flags, FALSE);
327 /*
328 * Handle altflags which don't map directly to
329 * mount flags.
330 */
331 if(altflags & ALTF_BG)
332 opflags |= BGRND;
333 if(altflags & ALTF_MNTUDP)
334 mnttcp_ok = 0;
335 if(altflags & ALTF_TCP) {
336 nfsargsp->sotype = SOCK_STREAM;
337 nfsproto = IPPROTO_TCP;
338 }
339 if(altflags & ALTF_PORT) {
340 /*
341 * XXX Converting from a string to an int
342 * and back again is silly, and we should
343 * allow /etc/services names.
344 */
345 asprintf(&portspec, "%d",
346 atoi(strstr(optarg, "port=") + 5));
347 if (portspec == NULL)
348 err(1, "asprintf");
349 }
350 mountmode = ANY;
351 if(altflags & ALTF_NFSV2)
352 mountmode = V2;
353 if(altflags & ALTF_NFSV3)
354 mountmode = V3;
355 if(altflags & ALTF_ACREGMIN)
356 nfsargsp->acregmin = atoi(strstr(optarg,
357 "acregmin=") + 9);
358 if(altflags & ALTF_ACREGMAX)
359 nfsargsp->acregmax = atoi(strstr(optarg,
360 "acregmax=") + 9);
361 if(altflags & ALTF_ACDIRMIN)
362 nfsargsp->acdirmin = atoi(strstr(optarg,
363 "acdirmin=") + 9);
364 if(altflags & ALTF_ACDIRMAX)
365 nfsargsp->acdirmax = atoi(strstr(optarg,
366 "acdirmax=") + 9);
367 break;
368 case 'P':
369 /* obsolete for NFSMNT_RESVPORT, now default */
370 break;
371 case 'R':
372 num = strtol(optarg, &p, 10);
373 if (*p || num < 0)
374 errx(1, "illegal -R value -- %s", optarg);
375 retrycnt = num;
376 break;
377 case 'r':
378 num = strtol(optarg, &p, 10);
379 if (*p || num <= 0)
380 errx(1, "illegal -r value -- %s", optarg);
381 nfsargsp->rsize = num;
382 nfsargsp->flags |= NFSMNT_RSIZE;
383 break;
384 case 's':
385 nfsargsp->flags |= NFSMNT_SOFT;
386 break;
387 case 'T':
388 nfsargsp->sotype = SOCK_STREAM;
389 nfsproto = IPPROTO_TCP;
390 break;
391 case 't':
392 num = strtol(optarg, &p, 10);
393 if (*p || num <= 0)
394 errx(1, "illegal -t value -- %s", optarg);
395 nfsargsp->timeo = num;
396 nfsargsp->flags |= NFSMNT_TIMEO;
397 break;
398 case 'w':
399 num = strtol(optarg, &p, 10);
400 if (*p || num <= 0)
401 errx(1, "illegal -w value -- %s", optarg);
402 nfsargsp->wsize = num;
403 nfsargsp->flags |= NFSMNT_WSIZE;
404 break;
405 case 'x':
406 num = strtol(optarg, &p, 10);
407 if (*p || num <= 0)
408 errx(1, "illegal -x value -- %s", optarg);
409 nfsargsp->retrans = num;
410 nfsargsp->flags |= NFSMNT_RETRANS;
411 break;
412 case 'U':
413 mnttcp_ok = 0;
414 break;
415 default:
416 usage();
417 break;
418 }
419 argc -= optind;
420 argv += optind;
421
422 if (argc != 2) {
423 usage();
424 /* NOTREACHED */
425 }
426
427 spec = *argv++;
428 name = *argv;
429
430 if (retrycnt == -1)
431 /* The default is to keep retrying forever. */
432 retrycnt = 0;
433 if (!getnfsargs(spec, nfsargsp))
434 exit(1);
435
436 /* resolve the mountpoint with realpath(3) */
437 (void)checkpath(name, mntpath);
438
439 error = getvfsbyname("nfs", &vfc);
440 if (error && vfsisloadable("nfs")) {
441 if(vfsload("nfs"))
442 err(EX_OSERR, "vfsload(nfs)");
443 endvfsent(); /* clear cache */
444 error = getvfsbyname("nfs", &vfc);
445 }
446 if (error)
447 errx(EX_OSERR, "nfs filesystem is not available");
448
449 if (mount(vfc.vfc_name, mntpath, mntflags, nfsargsp))
450 err(1, "%s", mntpath);
451
452 exit(0);
453}
454
455int
456getnfsargs(spec, nfsargsp)
457 char *spec;
458 struct nfs_args *nfsargsp;
459{
460 struct addrinfo hints, *ai_nfs, *ai;
461 enum tryret ret;
462 int ecode, speclen, remoteerr;
463 char *hostp, *delimp, *errstr;
464 size_t len;
465 static char nam[MNAMELEN + 1];
466
467 if ((delimp = strrchr(spec, ':')) != NULL) {
468 hostp = spec;
469 spec = delimp + 1;
470 } else if ((delimp = strrchr(spec, '@')) != NULL) {
471 warnx("path@server syntax is deprecated, use server:path");
472 hostp = delimp + 1;
473 } else {
474 warnx("no <host>:<dirpath> nfs-name");
475 return (0);
476 }
477 *delimp = '\0';
478
479 /*
480 * If there has been a trailing slash at mounttime it seems
481 * that some mountd implementations fail to remove the mount
482 * entries from their mountlist while unmounting.
483 */
484 for (speclen = strlen(spec);
485 speclen > 1 && spec[speclen - 1] == '/';
486 speclen--)
487 spec[speclen - 1] = '\0';
488 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
489 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
490 return (0);
491 }
492 /* Make both '@' and ':' notations equal */
493 if (*hostp != '\0') {
494 len = strlen(hostp);
495 memmove(nam, hostp, len);
496 nam[len] = ':';
497 memmove(nam + len + 1, spec, speclen);
498 nam[len + speclen + 1] = '\0';
499 }
500
501 /*
502 * Handle an internet host address.
503 */
504 memset(&hints, 0, sizeof hints);
505 hints.ai_flags = AI_NUMERICHOST;
506 hints.ai_socktype = nfsargsp->sotype;
507 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
508 hints.ai_flags = 0;
509 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
510 != 0) {
511 if (portspec == NULL)
512 errx(1, "%s: %s", hostp, gai_strerror(ecode));
513 else
514 errx(1, "%s:%s: %s", hostp, portspec,
515 gai_strerror(ecode));
516 return (0);
517 }
518 }
519
520 ret = TRYRET_LOCALERR;
521 for (;;) {
522 /*
523 * Try each entry returned by getaddrinfo(). Note the
524 * occurence of remote errors by setting `remoteerr'.
525 */
526 remoteerr = 0;
527 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
528 ret = nfs_tryproto(nfsargsp, ai, hostp, spec, &errstr);
529 if (ret == TRYRET_SUCCESS)
530 break;
531 if (ret != TRYRET_LOCALERR)
532 remoteerr = 1;
533 if ((opflags & ISBGRND) == 0)
534 fprintf(stderr, "%s\n", errstr);
535 }
536 if (ret == TRYRET_SUCCESS)
537 break;
538
539 /* Exit if all errors were local. */
540 if (!remoteerr)
541 exit(1);
542
543 /*
544 * If retrycnt == 0, we are to keep retrying forever.
545 * Otherwise decrement it, and exit if it hits zero.
546 */
547 if (retrycnt != 0 && --retrycnt == 0)
548 exit(1);
549
550 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
551 warnx("Cannot immediately mount %s:%s, backgrounding",
552 hostp, spec);
553 opflags |= ISBGRND;
554 if (daemon(0, 0) != 0)
555 err(1, "daemon");
556 }
557 sleep(60);
558 }
559 freeaddrinfo(ai_nfs);
560 nfsargsp->hostname = nam;
561 /* Add mounted filesystem to PATH_MOUNTTAB */
562 if (!add_mtab(hostp, spec))
563 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
564 return (1);
565}
566
567/*
568 * Try to set up the NFS arguments according to the address
569 * family, protocol (and possibly port) specified in `ai'.
570 *
571 * Returns TRYRET_SUCCESS if successful, or:
572 * TRYRET_TIMEOUT The server did not respond.
573 * TRYRET_REMOTEERR The server reported an error.
574 * TRYRET_LOCALERR Local failure.
575 *
576 * In all error cases, *errstr will be set to a statically-allocated string
577 * describing the error.
578 */
579enum tryret
580nfs_tryproto(struct nfs_args *nfsargsp, struct addrinfo *ai, char *hostp,
581 char *spec, char **errstr)
582{
583 static char errbuf[256];
584 struct sockaddr_storage nfs_ss;
585 struct netbuf nfs_nb;
586 struct nfhret nfhret;
587 struct timeval try;
588 struct rpc_err rpcerr;
589 CLIENT *clp;
590 struct netconfig *nconf, *nconf_mnt;
591 char *netid, *netid_mnt;
592 int doconnect, nfsvers, mntvers;
593 enum clnt_stat stat;
594 enum mountmode trymntmode;
595
596 trymntmode = mountmode;
597 errbuf[0] = '\0';
598 *errstr = errbuf;
599
600 if ((netid = netidbytype(ai->ai_family, nfsargsp->sotype)) == NULL) {
601 snprintf(errbuf, sizeof errbuf,
602 "af %d sotype %d not supported", ai->ai_family,
603 nfsargsp->sotype);
604 return (TRYRET_LOCALERR);
605 }
606 if ((nconf = getnetconf_cached(netid)) == NULL) {
607 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
608 return (TRYRET_LOCALERR);
609 }
610 /* The RPCPROG_MNT netid may be different. */
611 if (mnttcp_ok) {
612 netid_mnt = netid;
613 nconf_mnt = nconf;
614 } else {
615 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
616 == NULL) {
617 snprintf(errbuf, sizeof errbuf,
618 "af %d sotype SOCK_DGRAM not supported",
619 ai->ai_family);
620 return (TRYRET_LOCALERR);
621 }
622 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
623 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
624 nc_sperror());
625 return (TRYRET_LOCALERR);
626 }
627 }
628
629tryagain:
630 if (trymntmode == V2) {
631 nfsvers = 2;
632 mntvers = 1;
633 } else {
634 nfsvers = 3;
635 mntvers = 3;
636 }
637
638 if (portspec != NULL) {
639 /* `ai' contains the complete nfsd sockaddr. */
640 nfs_nb.buf = ai->ai_addr;
641 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
642 } else {
643 /* Ask the remote rpcbind. */
644 nfs_nb.buf = &nfs_ss;
645 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
646
647 if (!rpcb_getaddr(RPCPROG_NFS, nfsvers, nconf, &nfs_nb,
648 hostp)) {
649 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
650 trymntmode == ANY) {
651 trymntmode = V2;
652 goto tryagain;
653 }
654 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
655 netid, hostp, spec,
656 clnt_spcreateerror("RPCPROG_NFS"));
657 return (returncode(rpc_createerr.cf_stat,
658 &rpc_createerr.cf_error));
659 }
660 }
661
662 /* Check that the server (nfsd) responds on the port we have chosen. */
663 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, RPCPROG_NFS, nfsvers,
664 0, 0);
665 if (clp == NULL) {
666 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
667 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
668 return (returncode(rpc_createerr.cf_stat,
669 &rpc_createerr.cf_error));
670 }
671 if (nfsargsp->sotype == SOCK_DGRAM) {
672 /*
673 * Use connect(), to match what the kernel does. This
674 * catches cases where the server responds from the
675 * wrong source address.
676 */
677 doconnect = 1;
678 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
679 clnt_destroy(clp);
680 snprintf(errbuf, sizeof errbuf,
681 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
682 spec);
683 return (TRYRET_LOCALERR);
684 }
685 }
686
687 try.tv_sec = 10;
688 try.tv_usec = 0;
689 stat = clnt_call(clp, NFSPROC_NULL, xdr_void, NULL, xdr_void, NULL,
690 try);
691 if (stat != RPC_SUCCESS) {
692 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
693 clnt_destroy(clp);
694 trymntmode = V2;
695 goto tryagain;
696 }
697 clnt_geterr(clp, &rpcerr);
698 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
699 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
700 clnt_destroy(clp);
701 return (returncode(stat, &rpcerr));
702 }
703 clnt_destroy(clp);
704
705 /* Send the RPCMNT_MOUNT RPC to get the root filehandle. */
706 try.tv_sec = 10;
707 try.tv_usec = 0;
708 clp = clnt_tp_create(hostp, RPCPROG_MNT, mntvers, nconf_mnt);
709 if (clp == NULL) {
710 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
711 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
712 return (returncode(rpc_createerr.cf_stat,
713 &rpc_createerr.cf_error));
714 }
715 clp->cl_auth = authsys_create_default();
716 nfhret.auth = RPCAUTH_UNIX;
717 nfhret.vers = mntvers;
718 stat = clnt_call(clp, RPCMNT_MOUNT, xdr_dir, spec, xdr_fh, &nfhret,
719 try);
720 auth_destroy(clp->cl_auth);
721 if (stat != RPC_SUCCESS) {
722 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
723 clnt_destroy(clp);
724 trymntmode = V2;
725 goto tryagain;
726 }
727 clnt_geterr(clp, &rpcerr);
728 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
729 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
730 clnt_destroy(clp);
731 return (returncode(stat, &rpcerr));
732 }
733 clnt_destroy(clp);
734
735 if (nfhret.stat != 0) {
736 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
737 hostp, spec, strerror(nfhret.stat));
738 return (TRYRET_REMOTEERR);
739 }
740
741 /*
742 * Store the filehandle and server address in nfsargsp, making
743 * sure to copy any locally allocated structures.
744 */
745 nfsargsp->addrlen = nfs_nb.len;
746 nfsargsp->addr = malloc(nfsargsp->addrlen);
747 nfsargsp->fhsize = nfhret.fhsize;
748 nfsargsp->fh = malloc(nfsargsp->fhsize);
749 if (nfsargsp->addr == NULL || nfsargsp->fh == NULL)
750 err(1, "malloc");
751 bcopy(nfs_nb.buf, nfsargsp->addr, nfsargsp->addrlen);
752 bcopy(nfhret.nfh, nfsargsp->fh, nfsargsp->fhsize);
753
754 if (nfsvers == 3)
755 nfsargsp->flags |= NFSMNT_NFSV3;
756 else
757 nfsargsp->flags &= ~NFSMNT_NFSV3;
758
759 return (TRYRET_SUCCESS);
760}
761
762
763/*
764 * Catagorise a RPC return status and error into an `enum tryret'
765 * return code.
766 */
767enum tryret
768returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
769{
770 switch (stat) {
771 case RPC_TIMEDOUT:
772 return (TRYRET_TIMEOUT);
773 case RPC_PMAPFAILURE:
774 case RPC_PROGNOTREGISTERED:
775 case RPC_PROGVERSMISMATCH:
776 /* XXX, these can be local or remote. */
777 case RPC_CANTSEND:
778 case RPC_CANTRECV:
779 return (TRYRET_REMOTEERR);
780 case RPC_SYSTEMERROR:
781 switch (rpcerr->re_errno) {
782 case ETIMEDOUT:
783 return (TRYRET_TIMEOUT);
784 case ENOMEM:
785 break;
786 default:
787 return (TRYRET_REMOTEERR);
788 }
789 /* FALLTHROUGH */
790 default:
791 break;
792 }
793 return (TRYRET_LOCALERR);
794}
795
796/*
797 * Look up a netid based on an address family and socket type.
798 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
799 *
800 * XXX there should be a library function for this.
801 */
802char *
803netidbytype(int af, int sotype) {
804 struct nc_protos *p;
805
806 for (p = nc_protos; p->netid != NULL; p++) {
807 if (af != p->af || sotype != p->sotype)
808 continue;
809 return (p->netid);
810 }
811 return (NULL);
812}
813
814/*
815 * Look up a netconfig entry based on a netid, and cache the result so
816 * that we don't need to remember to call freenetconfigent().
817 *
818 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
819 * work on failure.
820 */
821struct netconfig *
822getnetconf_cached(const char *netid) {
823 static struct nc_entry {
824 struct netconfig *nconf;
825 struct nc_entry *next;
826 } *head;
827 struct nc_entry *p;
828 struct netconfig *nconf;
829
830 for (p = head; p != NULL; p = p->next)
831 if (strcmp(netid, p->nconf->nc_netid) == 0)
832 return (p->nconf);
833
834 if ((nconf = getnetconfigent(netid)) == NULL)
835 return (NULL);
836 if ((p = malloc(sizeof(*p))) == NULL)
837 err(1, "malloc");
838 p->nconf = nconf;
839 p->next = head;
840 head = p;
841
842 return (p->nconf);
843}
844
845/*
846 * xdr routines for mount rpc's
847 */
848int
849xdr_dir(xdrsp, dirp)
850 XDR *xdrsp;
851 char *dirp;
852{
853 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
854}
855
856int
857xdr_fh(xdrsp, np)
858 XDR *xdrsp;
859 struct nfhret *np;
860{
861 int i;
862 long auth, authcnt, authfnd = 0;
863
864 if (!xdr_u_long(xdrsp, &np->stat))
865 return (0);
866 if (np->stat)
867 return (1);
868 switch (np->vers) {
869 case 1:
870 np->fhsize = NFSX_V2FH;
871 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFSX_V2FH));
872 case 3:
873 if (!xdr_long(xdrsp, &np->fhsize))
874 return (0);
875 if (np->fhsize <= 0 || np->fhsize > NFSX_V3FHMAX)
876 return (0);
877 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
878 return (0);
879 if (!xdr_long(xdrsp, &authcnt))
880 return (0);
881 for (i = 0; i < authcnt; i++) {
882 if (!xdr_long(xdrsp, &auth))
883 return (0);
884 if (auth == np->auth)
885 authfnd++;
886 }
887 /*
888 * Some servers, such as DEC's OSF/1 return a nil authenticator
889 * list to indicate RPCAUTH_UNIX.
890 */
891 if (!authfnd && (authcnt > 0 || np->auth != RPCAUTH_UNIX))
892 np->stat = EAUTH;
893 return (1);
894 };
895 return (0);
896}
897
898void
899usage()
900{
901 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
902"usage: mount_nfs [-23KNPTUbcdilqs] [-D deadthresh] [-I readdirsize]",
903" [-R retrycnt] [-a maxreadahead]",
904" [-g maxgroups] [-m realm] [-o options] [-r readsize]",
905" [-t timeout] [-w writesize] [-x retrans] rhost:path node");
906 exit(1);
907}
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