46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sys/mount.h>
50#include <sys/stat.h>
51#include <sys/wait.h>
52
53#include <err.h>
54#include <errno.h>
55#include <fstab.h>
56#include <pwd.h>
57#include <signal.h>
58#include <stdio.h>
59#include <stdlib.h>
60#include <string.h>
61#include <unistd.h>
62
63#include "extern.h"
64#include "mntopts.h"
65#include "pathnames.h"
66
67/* `meta' options */
68#define MOUNT_META_OPTION_FSTAB "fstab"
69#define MOUNT_META_OPTION_CURRENT "current"
70
71int debug, fstab_style, verbose;
72
73char *catopt __P((char *, const char *));
74struct statfs
75 *getmntpt __P((const char *));
76int hasopt __P((const char *, const char *));
77int ismounted __P((struct fstab *, struct statfs *, int));
78int isremountable __P((const char *));
79void mangle __P((char *, int *, const char **));
80char *update_options __P((char *, char *, int));
81int mountfs __P((const char *, const char *, const char *,
82 int, const char *, const char *));
83void remopt __P((char *, const char *));
84void prmount __P((struct statfs *));
85void putfsent __P((const struct statfs *));
86void usage __P((void));
87char *flags2opts __P((int));
88
89/* Map from mount options to printable formats. */
90static struct opt {
91 int o_opt;
92 const char *o_name;
93} optnames[] = {
94 { MNT_ASYNC, "asynchronous" },
95 { MNT_EXPORTED, "NFS exported" },
96 { MNT_LOCAL, "local" },
97 { MNT_NOATIME, "noatime" },
98 { MNT_NODEV, "nodev" },
99 { MNT_NOEXEC, "noexec" },
100 { MNT_NOSUID, "nosuid" },
101 { MNT_NOSYMFOLLOW, "nosymfollow" },
102 { MNT_QUOTA, "with quotas" },
103 { MNT_RDONLY, "read-only" },
104 { MNT_SYNCHRONOUS, "synchronous" },
105 { MNT_UNION, "union" },
106 { MNT_NOCLUSTERR, "noclusterr" },
107 { MNT_NOCLUSTERW, "noclusterw" },
108 { MNT_SUIDDIR, "suiddir" },
109 { MNT_SOFTDEP, "soft-updates" },
110 { 0, NULL }
111};
112
113/*
114 * List of VFS types that can be remounted without becoming mounted on top
115 * of each other.
116 * XXX Is this list correct?
117 */
118static const char *
119remountable_fs_names[] = {
120 "ufs", "ffs", "lfs", "ext2fs",
121 0
122};
123
124int
125main(argc, argv)
126 int argc;
127 char * const argv[];
128{
129 const char *mntfromname, **vfslist, *vfstype;
130 struct fstab *fs;
131 struct statfs *mntbuf;
132 FILE *mountdfp;
133 pid_t pid;
134 int all, ch, i, init_flags, mntsize, rval, have_fstab;
135 char *options;
136
137 all = init_flags = 0;
138 options = NULL;
139 vfslist = NULL;
140 vfstype = "ufs";
141 while ((ch = getopt(argc, argv, "adfo:prwt:uv")) != -1)
142 switch (ch) {
143 case 'a':
144 all = 1;
145 break;
146 case 'd':
147 debug = 1;
148 break;
149 case 'f':
150 init_flags |= MNT_FORCE;
151 break;
152 case 'o':
153 if (*optarg)
154 options = catopt(options, optarg);
155 break;
156 case 'p':
157 fstab_style = 1;
158 verbose = 1;
159 break;
160 case 'r':
161 init_flags |= MNT_RDONLY;
162 break;
163 case 't':
164 if (vfslist != NULL)
165 errx(1, "only one -t option may be specified");
166 vfslist = makevfslist(optarg);
167 vfstype = optarg;
168 break;
169 case 'u':
170 init_flags |= MNT_UPDATE;
171 break;
172 case 'v':
173 verbose = 1;
174 break;
175 case 'w':
176 init_flags &= ~MNT_RDONLY;
177 break;
178 case '?':
179 default:
180 usage();
181 /* NOTREACHED */
182 }
183 argc -= optind;
184 argv += optind;
185
186#define BADTYPE(type) \
187 (strcmp(type, FSTAB_RO) && \
188 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
189
190 rval = 0;
191 switch (argc) {
192 case 0:
193 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
194 err(1, "getmntinfo");
195 if (all) {
196 while ((fs = getfsent()) != NULL) {
197 if (BADTYPE(fs->fs_type))
198 continue;
199 if (checkvfsname(fs->fs_vfstype, vfslist))
200 continue;
201 if (hasopt(fs->fs_mntops, "noauto"))
202 continue;
203 if (!(init_flags & MNT_UPDATE) &&
204 ismounted(fs, mntbuf, mntsize))
205 continue;
206 if (mountfs(fs->fs_vfstype, fs->fs_spec,
207 fs->fs_file, init_flags, options,
208 fs->fs_mntops))
209 rval = 1;
210 }
211 } else if (fstab_style) {
212 for (i = 0; i < mntsize; i++) {
213 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
214 continue;
215 putfsent(&mntbuf[i]);
216 }
217 } else {
218 for (i = 0; i < mntsize; i++) {
219 if (checkvfsname(mntbuf[i].f_fstypename,
220 vfslist))
221 continue;
222 prmount(&mntbuf[i]);
223 }
224 }
225 exit(rval);
226 case 1:
227 if (vfslist != NULL)
228 usage();
229
230 if (init_flags & MNT_UPDATE) {
231 mntfromname = NULL;
232 have_fstab = 0;
233 if ((mntbuf = getmntpt(*argv)) == NULL)
234 errx(1, "not currently mounted %s", *argv);
235 /*
236 * Only get the mntflags from fstab if both mntpoint
237 * and mntspec are identical. Also handle the special
238 * case where just '/' is mounted and 'spec' is not
239 * identical with the one from fstab ('/dev' is missing
240 * in the spec-string at boot-time).
241 */
242 if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) {
243 if (strcmp(fs->fs_spec,
244 mntbuf->f_mntfromname) == 0 &&
245 strcmp(fs->fs_file,
246 mntbuf->f_mntonname) == 0) {
247 have_fstab = 1;
248 mntfromname = mntbuf->f_mntfromname;
249 } else if (argv[0][0] == '/' &&
250 argv[0][1] == '\0') {
251 fs = getfsfile("/");
252 have_fstab = 1;
253 mntfromname = fs->fs_spec;
254 }
255 }
256 if (have_fstab) {
257 options = update_options(options, fs->fs_mntops,
258 mntbuf->f_flags);
259 } else {
260 mntfromname = mntbuf->f_mntfromname;
261 options = update_options(options, NULL,
262 mntbuf->f_flags);
263 }
264 rval = mountfs(mntbuf->f_fstypename, mntfromname,
265 mntbuf->f_mntonname, init_flags, options, 0);
266 break;
267 }
268 rmslashes(*argv, *argv);
269 if ((fs = getfsfile(*argv)) == NULL &&
270 (fs = getfsspec(*argv)) == NULL)
271 errx(1, "%s: unknown special file or file system",
272 *argv);
273 if (BADTYPE(fs->fs_type))
274 errx(1, "%s has unknown file system type",
275 *argv);
276 rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file,
277 init_flags, options, fs->fs_mntops);
278 break;
279 case 2:
280 /*
281 * If -t flag has not been specified, the path cannot be
282 * found, spec contains either a ':' or a '@', and the
283 * spec is not a file with those characters, then assume
284 * that an NFS filesystem is being specified ala Sun.
285 */
286 if (vfslist == NULL && strpbrk(argv[0], ":@") != NULL &&
287 access(argv[0], 0) == -1)
288 vfstype = "nfs";
289 rval = mountfs(vfstype,
290 argv[0], argv[1], init_flags, options, NULL);
291 break;
292 default:
293 usage();
294 /* NOTREACHED */
295 }
296
297 /*
298 * If the mount was successfully, and done by root, tell mountd the
299 * good news. Pid checks are probably unnecessary, but don't hurt.
300 */
301 if (rval == 0 && getuid() == 0 &&
302 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) {
303 if (fscanf(mountdfp, "%d", &pid) == 1 &&
304 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH)
305 err(1, "signal mountd");
306 (void)fclose(mountdfp);
307 }
308
309 exit(rval);
310}
311
312int
313ismounted(fs, mntbuf, mntsize)
314 struct fstab *fs;
315 struct statfs *mntbuf;
316 int mntsize;
317{
318 int i;
319
320 if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0')
321 /* the root file system can always be remounted */
322 return (0);
323
324 for (i = mntsize - 1; i >= 0; --i)
325 if (strcmp(fs->fs_file, mntbuf[i].f_mntonname) == 0 &&
326 (!isremountable(fs->fs_vfstype) ||
327 strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0))
328 return (1);
329 return (0);
330}
331
332int
333isremountable(vfsname)
334 const char *vfsname;
335{
336 const char **cp;
337
338 for (cp = remountable_fs_names; *cp; cp++)
339 if (strcmp(*cp, vfsname) == 0)
340 return (1);
341 return (0);
342}
343
344int
345hasopt(mntopts, option)
346 const char *mntopts, *option;
347{
348 int negative, found;
349 char *opt, *optbuf;
350
351 if (option[0] == 'n' && option[1] == 'o') {
352 negative = 1;
353 option += 2;
354 } else
355 negative = 0;
356 optbuf = strdup(mntopts);
357 found = 0;
358 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
359 if (opt[0] == 'n' && opt[1] == 'o') {
360 if (!strcasecmp(opt + 2, option))
361 found = negative;
362 } else if (!strcasecmp(opt, option))
363 found = !negative;
364 }
365 free(optbuf);
366 return (found);
367}
368
369int
370mountfs(vfstype, spec, name, flags, options, mntopts)
371 const char *vfstype, *spec, *name, *options, *mntopts;
372 int flags;
373{
374 /* List of directories containing mount_xxx subcommands. */
375 static const char *edirs[] = {
376 _PATH_SBIN,
377 _PATH_USRSBIN,
378 NULL
379 };
380 const char *argv[100], **edir;
381 struct statfs sf;
382 pid_t pid;
383 int argc, i, status;
384 char *optbuf, execname[MAXPATHLEN + 1], mntpath[MAXPATHLEN];
385
386#if __GNUC__
387 (void)&optbuf;
388 (void)&name;
389#endif
390
391 /* resolve the mountpoint with realpath(3) */
392 (void)checkpath(name, mntpath);
393 name = mntpath;
394
395 if (mntopts == NULL)
396 mntopts = "";
397 if (options == NULL) {
398 if (*mntopts == '\0') {
399 options = "rw";
400 } else {
401 options = mntopts;
402 mntopts = "";
403 }
404 }
405 optbuf = catopt(strdup(mntopts), options);
406
407 if (strcmp(name, "/") == 0)
408 flags |= MNT_UPDATE;
409 if (flags & MNT_FORCE)
410 optbuf = catopt(optbuf, "force");
411 if (flags & MNT_RDONLY)
412 optbuf = catopt(optbuf, "ro");
413 /*
414 * XXX
415 * The mount_mfs (newfs) command uses -o to select the
416 * optimization mode. We don't pass the default "-o rw"
417 * for that reason.
418 */
419 if (flags & MNT_UPDATE)
420 optbuf = catopt(optbuf, "update");
421
422 argc = 0;
423 argv[argc++] = vfstype;
424 mangle(optbuf, &argc, argv);
425 argv[argc++] = spec;
426 argv[argc++] = name;
427 argv[argc] = NULL;
428
429 if (debug) {
430 (void)printf("exec: mount_%s", vfstype);
431 for (i = 1; i < argc; i++)
432 (void)printf(" %s", argv[i]);
433 (void)printf("\n");
434 return (0);
435 }
436
437 switch (pid = fork()) {
438 case -1: /* Error. */
439 warn("fork");
440 free(optbuf);
441 return (1);
442 case 0: /* Child. */
443 if (strcmp(vfstype, "ufs") == 0)
444 exit(mount_ufs(argc, (char * const *) argv));
445
446 /* Go find an executable. */
447 for (edir = edirs; *edir; edir++) {
448 (void)snprintf(execname,
449 sizeof(execname), "%s/mount_%s", *edir, vfstype);
450 execv(execname, (char * const *)argv);
451 }
452 if (errno == ENOENT) {
453 int len = 0;
454 char *cp;
455 for (edir = edirs; *edir; edir++)
456 len += strlen(*edir) + 2; /* ", " */
457 if ((cp = malloc(len)) == NULL)
458 errx(1, "malloc failed");
459 cp[0] = '\0';
460 for (edir = edirs; *edir; edir++) {
461 strcat(cp, *edir);
462 if (edir[1] != NULL)
463 strcat(cp, ", ");
464 }
465 warn("exec mount_%s not found in %s", vfstype, cp);
466 }
467 exit(1);
468 /* NOTREACHED */
469 default: /* Parent. */
470 free(optbuf);
471
472 if (waitpid(pid, &status, 0) < 0) {
473 warn("waitpid");
474 return (1);
475 }
476
477 if (WIFEXITED(status)) {
478 if (WEXITSTATUS(status) != 0)
479 return (WEXITSTATUS(status));
480 } else if (WIFSIGNALED(status)) {
481 warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
482 return (1);
483 }
484
485 if (verbose) {
486 if (statfs(name, &sf) < 0) {
487 warn("statfs %s", name);
488 return (1);
489 }
490 if (fstab_style)
491 putfsent(&sf);
492 else
493 prmount(&sf);
494 }
495 break;
496 }
497
498 return (0);
499}
500
501void
502prmount(sfp)
503 struct statfs *sfp;
504{
505 int flags;
506 struct opt *o;
507 struct passwd *pw;
508
509 (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname,
510 sfp->f_fstypename);
511
512 flags = sfp->f_flags & MNT_VISFLAGMASK;
513 for (o = optnames; flags && o->o_opt; o++)
514 if (flags & o->o_opt) {
515 (void)printf(", %s", o->o_name);
516 flags &= ~o->o_opt;
517 }
518 if (sfp->f_owner) {
519 (void)printf(", mounted by ");
520 if ((pw = getpwuid(sfp->f_owner)) != NULL)
521 (void)printf("%s", pw->pw_name);
522 else
523 (void)printf("%d", sfp->f_owner);
524 }
| 46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sys/mount.h>
50#include <sys/stat.h>
51#include <sys/wait.h>
52
53#include <err.h>
54#include <errno.h>
55#include <fstab.h>
56#include <pwd.h>
57#include <signal.h>
58#include <stdio.h>
59#include <stdlib.h>
60#include <string.h>
61#include <unistd.h>
62
63#include "extern.h"
64#include "mntopts.h"
65#include "pathnames.h"
66
67/* `meta' options */
68#define MOUNT_META_OPTION_FSTAB "fstab"
69#define MOUNT_META_OPTION_CURRENT "current"
70
71int debug, fstab_style, verbose;
72
73char *catopt __P((char *, const char *));
74struct statfs
75 *getmntpt __P((const char *));
76int hasopt __P((const char *, const char *));
77int ismounted __P((struct fstab *, struct statfs *, int));
78int isremountable __P((const char *));
79void mangle __P((char *, int *, const char **));
80char *update_options __P((char *, char *, int));
81int mountfs __P((const char *, const char *, const char *,
82 int, const char *, const char *));
83void remopt __P((char *, const char *));
84void prmount __P((struct statfs *));
85void putfsent __P((const struct statfs *));
86void usage __P((void));
87char *flags2opts __P((int));
88
89/* Map from mount options to printable formats. */
90static struct opt {
91 int o_opt;
92 const char *o_name;
93} optnames[] = {
94 { MNT_ASYNC, "asynchronous" },
95 { MNT_EXPORTED, "NFS exported" },
96 { MNT_LOCAL, "local" },
97 { MNT_NOATIME, "noatime" },
98 { MNT_NODEV, "nodev" },
99 { MNT_NOEXEC, "noexec" },
100 { MNT_NOSUID, "nosuid" },
101 { MNT_NOSYMFOLLOW, "nosymfollow" },
102 { MNT_QUOTA, "with quotas" },
103 { MNT_RDONLY, "read-only" },
104 { MNT_SYNCHRONOUS, "synchronous" },
105 { MNT_UNION, "union" },
106 { MNT_NOCLUSTERR, "noclusterr" },
107 { MNT_NOCLUSTERW, "noclusterw" },
108 { MNT_SUIDDIR, "suiddir" },
109 { MNT_SOFTDEP, "soft-updates" },
110 { 0, NULL }
111};
112
113/*
114 * List of VFS types that can be remounted without becoming mounted on top
115 * of each other.
116 * XXX Is this list correct?
117 */
118static const char *
119remountable_fs_names[] = {
120 "ufs", "ffs", "lfs", "ext2fs",
121 0
122};
123
124int
125main(argc, argv)
126 int argc;
127 char * const argv[];
128{
129 const char *mntfromname, **vfslist, *vfstype;
130 struct fstab *fs;
131 struct statfs *mntbuf;
132 FILE *mountdfp;
133 pid_t pid;
134 int all, ch, i, init_flags, mntsize, rval, have_fstab;
135 char *options;
136
137 all = init_flags = 0;
138 options = NULL;
139 vfslist = NULL;
140 vfstype = "ufs";
141 while ((ch = getopt(argc, argv, "adfo:prwt:uv")) != -1)
142 switch (ch) {
143 case 'a':
144 all = 1;
145 break;
146 case 'd':
147 debug = 1;
148 break;
149 case 'f':
150 init_flags |= MNT_FORCE;
151 break;
152 case 'o':
153 if (*optarg)
154 options = catopt(options, optarg);
155 break;
156 case 'p':
157 fstab_style = 1;
158 verbose = 1;
159 break;
160 case 'r':
161 init_flags |= MNT_RDONLY;
162 break;
163 case 't':
164 if (vfslist != NULL)
165 errx(1, "only one -t option may be specified");
166 vfslist = makevfslist(optarg);
167 vfstype = optarg;
168 break;
169 case 'u':
170 init_flags |= MNT_UPDATE;
171 break;
172 case 'v':
173 verbose = 1;
174 break;
175 case 'w':
176 init_flags &= ~MNT_RDONLY;
177 break;
178 case '?':
179 default:
180 usage();
181 /* NOTREACHED */
182 }
183 argc -= optind;
184 argv += optind;
185
186#define BADTYPE(type) \
187 (strcmp(type, FSTAB_RO) && \
188 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
189
190 rval = 0;
191 switch (argc) {
192 case 0:
193 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
194 err(1, "getmntinfo");
195 if (all) {
196 while ((fs = getfsent()) != NULL) {
197 if (BADTYPE(fs->fs_type))
198 continue;
199 if (checkvfsname(fs->fs_vfstype, vfslist))
200 continue;
201 if (hasopt(fs->fs_mntops, "noauto"))
202 continue;
203 if (!(init_flags & MNT_UPDATE) &&
204 ismounted(fs, mntbuf, mntsize))
205 continue;
206 if (mountfs(fs->fs_vfstype, fs->fs_spec,
207 fs->fs_file, init_flags, options,
208 fs->fs_mntops))
209 rval = 1;
210 }
211 } else if (fstab_style) {
212 for (i = 0; i < mntsize; i++) {
213 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
214 continue;
215 putfsent(&mntbuf[i]);
216 }
217 } else {
218 for (i = 0; i < mntsize; i++) {
219 if (checkvfsname(mntbuf[i].f_fstypename,
220 vfslist))
221 continue;
222 prmount(&mntbuf[i]);
223 }
224 }
225 exit(rval);
226 case 1:
227 if (vfslist != NULL)
228 usage();
229
230 if (init_flags & MNT_UPDATE) {
231 mntfromname = NULL;
232 have_fstab = 0;
233 if ((mntbuf = getmntpt(*argv)) == NULL)
234 errx(1, "not currently mounted %s", *argv);
235 /*
236 * Only get the mntflags from fstab if both mntpoint
237 * and mntspec are identical. Also handle the special
238 * case where just '/' is mounted and 'spec' is not
239 * identical with the one from fstab ('/dev' is missing
240 * in the spec-string at boot-time).
241 */
242 if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) {
243 if (strcmp(fs->fs_spec,
244 mntbuf->f_mntfromname) == 0 &&
245 strcmp(fs->fs_file,
246 mntbuf->f_mntonname) == 0) {
247 have_fstab = 1;
248 mntfromname = mntbuf->f_mntfromname;
249 } else if (argv[0][0] == '/' &&
250 argv[0][1] == '\0') {
251 fs = getfsfile("/");
252 have_fstab = 1;
253 mntfromname = fs->fs_spec;
254 }
255 }
256 if (have_fstab) {
257 options = update_options(options, fs->fs_mntops,
258 mntbuf->f_flags);
259 } else {
260 mntfromname = mntbuf->f_mntfromname;
261 options = update_options(options, NULL,
262 mntbuf->f_flags);
263 }
264 rval = mountfs(mntbuf->f_fstypename, mntfromname,
265 mntbuf->f_mntonname, init_flags, options, 0);
266 break;
267 }
268 rmslashes(*argv, *argv);
269 if ((fs = getfsfile(*argv)) == NULL &&
270 (fs = getfsspec(*argv)) == NULL)
271 errx(1, "%s: unknown special file or file system",
272 *argv);
273 if (BADTYPE(fs->fs_type))
274 errx(1, "%s has unknown file system type",
275 *argv);
276 rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file,
277 init_flags, options, fs->fs_mntops);
278 break;
279 case 2:
280 /*
281 * If -t flag has not been specified, the path cannot be
282 * found, spec contains either a ':' or a '@', and the
283 * spec is not a file with those characters, then assume
284 * that an NFS filesystem is being specified ala Sun.
285 */
286 if (vfslist == NULL && strpbrk(argv[0], ":@") != NULL &&
287 access(argv[0], 0) == -1)
288 vfstype = "nfs";
289 rval = mountfs(vfstype,
290 argv[0], argv[1], init_flags, options, NULL);
291 break;
292 default:
293 usage();
294 /* NOTREACHED */
295 }
296
297 /*
298 * If the mount was successfully, and done by root, tell mountd the
299 * good news. Pid checks are probably unnecessary, but don't hurt.
300 */
301 if (rval == 0 && getuid() == 0 &&
302 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) {
303 if (fscanf(mountdfp, "%d", &pid) == 1 &&
304 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH)
305 err(1, "signal mountd");
306 (void)fclose(mountdfp);
307 }
308
309 exit(rval);
310}
311
312int
313ismounted(fs, mntbuf, mntsize)
314 struct fstab *fs;
315 struct statfs *mntbuf;
316 int mntsize;
317{
318 int i;
319
320 if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0')
321 /* the root file system can always be remounted */
322 return (0);
323
324 for (i = mntsize - 1; i >= 0; --i)
325 if (strcmp(fs->fs_file, mntbuf[i].f_mntonname) == 0 &&
326 (!isremountable(fs->fs_vfstype) ||
327 strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0))
328 return (1);
329 return (0);
330}
331
332int
333isremountable(vfsname)
334 const char *vfsname;
335{
336 const char **cp;
337
338 for (cp = remountable_fs_names; *cp; cp++)
339 if (strcmp(*cp, vfsname) == 0)
340 return (1);
341 return (0);
342}
343
344int
345hasopt(mntopts, option)
346 const char *mntopts, *option;
347{
348 int negative, found;
349 char *opt, *optbuf;
350
351 if (option[0] == 'n' && option[1] == 'o') {
352 negative = 1;
353 option += 2;
354 } else
355 negative = 0;
356 optbuf = strdup(mntopts);
357 found = 0;
358 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
359 if (opt[0] == 'n' && opt[1] == 'o') {
360 if (!strcasecmp(opt + 2, option))
361 found = negative;
362 } else if (!strcasecmp(opt, option))
363 found = !negative;
364 }
365 free(optbuf);
366 return (found);
367}
368
369int
370mountfs(vfstype, spec, name, flags, options, mntopts)
371 const char *vfstype, *spec, *name, *options, *mntopts;
372 int flags;
373{
374 /* List of directories containing mount_xxx subcommands. */
375 static const char *edirs[] = {
376 _PATH_SBIN,
377 _PATH_USRSBIN,
378 NULL
379 };
380 const char *argv[100], **edir;
381 struct statfs sf;
382 pid_t pid;
383 int argc, i, status;
384 char *optbuf, execname[MAXPATHLEN + 1], mntpath[MAXPATHLEN];
385
386#if __GNUC__
387 (void)&optbuf;
388 (void)&name;
389#endif
390
391 /* resolve the mountpoint with realpath(3) */
392 (void)checkpath(name, mntpath);
393 name = mntpath;
394
395 if (mntopts == NULL)
396 mntopts = "";
397 if (options == NULL) {
398 if (*mntopts == '\0') {
399 options = "rw";
400 } else {
401 options = mntopts;
402 mntopts = "";
403 }
404 }
405 optbuf = catopt(strdup(mntopts), options);
406
407 if (strcmp(name, "/") == 0)
408 flags |= MNT_UPDATE;
409 if (flags & MNT_FORCE)
410 optbuf = catopt(optbuf, "force");
411 if (flags & MNT_RDONLY)
412 optbuf = catopt(optbuf, "ro");
413 /*
414 * XXX
415 * The mount_mfs (newfs) command uses -o to select the
416 * optimization mode. We don't pass the default "-o rw"
417 * for that reason.
418 */
419 if (flags & MNT_UPDATE)
420 optbuf = catopt(optbuf, "update");
421
422 argc = 0;
423 argv[argc++] = vfstype;
424 mangle(optbuf, &argc, argv);
425 argv[argc++] = spec;
426 argv[argc++] = name;
427 argv[argc] = NULL;
428
429 if (debug) {
430 (void)printf("exec: mount_%s", vfstype);
431 for (i = 1; i < argc; i++)
432 (void)printf(" %s", argv[i]);
433 (void)printf("\n");
434 return (0);
435 }
436
437 switch (pid = fork()) {
438 case -1: /* Error. */
439 warn("fork");
440 free(optbuf);
441 return (1);
442 case 0: /* Child. */
443 if (strcmp(vfstype, "ufs") == 0)
444 exit(mount_ufs(argc, (char * const *) argv));
445
446 /* Go find an executable. */
447 for (edir = edirs; *edir; edir++) {
448 (void)snprintf(execname,
449 sizeof(execname), "%s/mount_%s", *edir, vfstype);
450 execv(execname, (char * const *)argv);
451 }
452 if (errno == ENOENT) {
453 int len = 0;
454 char *cp;
455 for (edir = edirs; *edir; edir++)
456 len += strlen(*edir) + 2; /* ", " */
457 if ((cp = malloc(len)) == NULL)
458 errx(1, "malloc failed");
459 cp[0] = '\0';
460 for (edir = edirs; *edir; edir++) {
461 strcat(cp, *edir);
462 if (edir[1] != NULL)
463 strcat(cp, ", ");
464 }
465 warn("exec mount_%s not found in %s", vfstype, cp);
466 }
467 exit(1);
468 /* NOTREACHED */
469 default: /* Parent. */
470 free(optbuf);
471
472 if (waitpid(pid, &status, 0) < 0) {
473 warn("waitpid");
474 return (1);
475 }
476
477 if (WIFEXITED(status)) {
478 if (WEXITSTATUS(status) != 0)
479 return (WEXITSTATUS(status));
480 } else if (WIFSIGNALED(status)) {
481 warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
482 return (1);
483 }
484
485 if (verbose) {
486 if (statfs(name, &sf) < 0) {
487 warn("statfs %s", name);
488 return (1);
489 }
490 if (fstab_style)
491 putfsent(&sf);
492 else
493 prmount(&sf);
494 }
495 break;
496 }
497
498 return (0);
499}
500
501void
502prmount(sfp)
503 struct statfs *sfp;
504{
505 int flags;
506 struct opt *o;
507 struct passwd *pw;
508
509 (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname,
510 sfp->f_fstypename);
511
512 flags = sfp->f_flags & MNT_VISFLAGMASK;
513 for (o = optnames; flags && o->o_opt; o++)
514 if (flags & o->o_opt) {
515 (void)printf(", %s", o->o_name);
516 flags &= ~o->o_opt;
517 }
518 if (sfp->f_owner) {
519 (void)printf(", mounted by ");
520 if ((pw = getpwuid(sfp->f_owner)) != NULL)
521 (void)printf("%s", pw->pw_name);
522 else
523 (void)printf("%d", sfp->f_owner);
524 }
|
531 (void)printf(")\n");
532}
533
534struct statfs *
535getmntpt(name)
536 const char *name;
537{
538 struct statfs *mntbuf;
539 int i, mntsize;
540
541 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
542 for (i = mntsize - 1; i >= 0; i--) {
543 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 ||
544 strcmp(mntbuf[i].f_mntonname, name) == 0)
545 return (&mntbuf[i]);
546 }
547 return (NULL);
548}
549
550char *
551catopt(s0, s1)
552 char *s0;
553 const char *s1;
554{
555 size_t i;
556 char *cp;
557
558 if (s1 == NULL || *s1 == '\0')
559 return s0;
560
561 if (s0 && *s0) {
562 i = strlen(s0) + strlen(s1) + 1 + 1;
563 if ((cp = malloc(i)) == NULL)
564 errx(1, "malloc failed");
565 (void)snprintf(cp, i, "%s,%s", s0, s1);
566 } else
567 cp = strdup(s1);
568
569 if (s0)
570 free(s0);
571 return (cp);
572}
573
574void
575mangle(options, argcp, argv)
576 char *options;
577 int *argcp;
578 const char **argv;
579{
580 char *p, *s;
581 int argc;
582
583 argc = *argcp;
584 for (s = options; (p = strsep(&s, ",")) != NULL;)
585 if (*p != '\0') {
586 if (*p == '-') {
587 argv[argc++] = p;
588 p = strchr(p, '=');
589 if (p) {
590 *p = '\0';
591 argv[argc++] = p+1;
592 }
593 } else if (strcmp(p, "rw") != 0) {
594 argv[argc++] = "-o";
595 argv[argc++] = p;
596 }
597 }
598
599 *argcp = argc;
600}
601
602
603char *
604update_options(opts, fstab, curflags)
605 char *opts;
606 char *fstab;
607 int curflags;
608{
609 char *o, *p;
610 char *cur;
611 char *expopt, *newopt, *tmpopt;
612
613 if (opts == NULL)
614 return strdup("");
615
616 /* remove meta options from list */
617 remopt(fstab, MOUNT_META_OPTION_FSTAB);
618 remopt(fstab, MOUNT_META_OPTION_CURRENT);
619 cur = flags2opts(curflags);
620
621 /*
622 * Expand all meta-options passed to us first.
623 */
624 expopt = NULL;
625 for (p = opts; (o = strsep(&p, ",")) != NULL;) {
626 if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0)
627 expopt = catopt(expopt, fstab);
628 else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0)
629 expopt = catopt(expopt, cur);
630 else
631 expopt = catopt(expopt, o);
632 }
633 free(cur);
634 free(opts);
635
636 /*
637 * Remove previous contradictory arguments. Given option "foo" we
638 * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo"
639 * and "foo" - so we can deal with possible options like "notice".
640 */
641 newopt = NULL;
642 for (p = expopt; (o = strsep(&p, ",")) != NULL;) {
643 if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL)
644 errx(1, "malloc failed");
645
646 strcpy(tmpopt, "no");
647 strcat(tmpopt, o);
648 remopt(newopt, tmpopt);
649 free(tmpopt);
650
651 if (strncmp("no", o, 2) == 0)
652 remopt(newopt, o+2);
653
654 newopt = catopt(newopt, o);
655 }
656 free(expopt);
657
658 return newopt;
659}
660
661void
662remopt(string, opt)
663 char *string;
664 const char *opt;
665{
666 char *o, *p, *r;
667
668 if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0')
669 return;
670
671 r = string;
672
673 for (p = string; (o = strsep(&p, ",")) != NULL;) {
674 if (strcmp(opt, o) != 0) {
675 if (*r == ',' && *o != '\0')
676 r++;
677 while ((*r++ = *o++) != '\0')
678 ;
679 *--r = ',';
680 }
681 }
682 *r = '\0';
683}
684
685void
686usage()
687{
688
689 (void)fprintf(stderr, "%s\n%s\n%s\n",
690"usage: mount [-dfpruvw] [-o options] [-t ufs | external_type] special node",
691" mount [-adfpruvw] [-t ufs | external_type]",
692" mount [-dfpruvw] special | node");
693 exit(1);
694}
695
696void
697putfsent(ent)
698 const struct statfs *ent;
699{
700 struct fstab *fst;
701 char *opts;
702
703 opts = flags2opts(ent->f_flags);
704 printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname,
705 ent->f_fstypename, opts);
706 free(opts);
707
708 if ((fst = getfsspec(ent->f_mntfromname)))
709 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
710 else if ((fst = getfsfile(ent->f_mntonname)))
711 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
712 else if (strcmp(ent->f_fstypename, "ufs") == 0) {
713 if (strcmp(ent->f_mntonname, "/") == 0)
714 printf("\t1 1\n");
715 else
716 printf("\t2 2\n");
717 } else
718 printf("\t0 0\n");
719}
720
721
722char *
723flags2opts(flags)
724 int flags;
725{
726 char *res;
727
728 res = NULL;
729
730 res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw");
731
732 if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync");
733 if (flags & MNT_NOEXEC) res = catopt(res, "noexec");
734 if (flags & MNT_NOSUID) res = catopt(res, "nosuid");
735 if (flags & MNT_NODEV) res = catopt(res, "nodev");
736 if (flags & MNT_UNION) res = catopt(res, "union");
737 if (flags & MNT_ASYNC) res = catopt(res, "async");
738 if (flags & MNT_NOATIME) res = catopt(res, "noatime");
739 if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr");
740 if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw");
741 if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow");
742 if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir");
743
744 return res;
745}
| 533 (void)printf(")\n");
534}
535
536struct statfs *
537getmntpt(name)
538 const char *name;
539{
540 struct statfs *mntbuf;
541 int i, mntsize;
542
543 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
544 for (i = mntsize - 1; i >= 0; i--) {
545 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 ||
546 strcmp(mntbuf[i].f_mntonname, name) == 0)
547 return (&mntbuf[i]);
548 }
549 return (NULL);
550}
551
552char *
553catopt(s0, s1)
554 char *s0;
555 const char *s1;
556{
557 size_t i;
558 char *cp;
559
560 if (s1 == NULL || *s1 == '\0')
561 return s0;
562
563 if (s0 && *s0) {
564 i = strlen(s0) + strlen(s1) + 1 + 1;
565 if ((cp = malloc(i)) == NULL)
566 errx(1, "malloc failed");
567 (void)snprintf(cp, i, "%s,%s", s0, s1);
568 } else
569 cp = strdup(s1);
570
571 if (s0)
572 free(s0);
573 return (cp);
574}
575
576void
577mangle(options, argcp, argv)
578 char *options;
579 int *argcp;
580 const char **argv;
581{
582 char *p, *s;
583 int argc;
584
585 argc = *argcp;
586 for (s = options; (p = strsep(&s, ",")) != NULL;)
587 if (*p != '\0') {
588 if (*p == '-') {
589 argv[argc++] = p;
590 p = strchr(p, '=');
591 if (p) {
592 *p = '\0';
593 argv[argc++] = p+1;
594 }
595 } else if (strcmp(p, "rw") != 0) {
596 argv[argc++] = "-o";
597 argv[argc++] = p;
598 }
599 }
600
601 *argcp = argc;
602}
603
604
605char *
606update_options(opts, fstab, curflags)
607 char *opts;
608 char *fstab;
609 int curflags;
610{
611 char *o, *p;
612 char *cur;
613 char *expopt, *newopt, *tmpopt;
614
615 if (opts == NULL)
616 return strdup("");
617
618 /* remove meta options from list */
619 remopt(fstab, MOUNT_META_OPTION_FSTAB);
620 remopt(fstab, MOUNT_META_OPTION_CURRENT);
621 cur = flags2opts(curflags);
622
623 /*
624 * Expand all meta-options passed to us first.
625 */
626 expopt = NULL;
627 for (p = opts; (o = strsep(&p, ",")) != NULL;) {
628 if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0)
629 expopt = catopt(expopt, fstab);
630 else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0)
631 expopt = catopt(expopt, cur);
632 else
633 expopt = catopt(expopt, o);
634 }
635 free(cur);
636 free(opts);
637
638 /*
639 * Remove previous contradictory arguments. Given option "foo" we
640 * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo"
641 * and "foo" - so we can deal with possible options like "notice".
642 */
643 newopt = NULL;
644 for (p = expopt; (o = strsep(&p, ",")) != NULL;) {
645 if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL)
646 errx(1, "malloc failed");
647
648 strcpy(tmpopt, "no");
649 strcat(tmpopt, o);
650 remopt(newopt, tmpopt);
651 free(tmpopt);
652
653 if (strncmp("no", o, 2) == 0)
654 remopt(newopt, o+2);
655
656 newopt = catopt(newopt, o);
657 }
658 free(expopt);
659
660 return newopt;
661}
662
663void
664remopt(string, opt)
665 char *string;
666 const char *opt;
667{
668 char *o, *p, *r;
669
670 if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0')
671 return;
672
673 r = string;
674
675 for (p = string; (o = strsep(&p, ",")) != NULL;) {
676 if (strcmp(opt, o) != 0) {
677 if (*r == ',' && *o != '\0')
678 r++;
679 while ((*r++ = *o++) != '\0')
680 ;
681 *--r = ',';
682 }
683 }
684 *r = '\0';
685}
686
687void
688usage()
689{
690
691 (void)fprintf(stderr, "%s\n%s\n%s\n",
692"usage: mount [-dfpruvw] [-o options] [-t ufs | external_type] special node",
693" mount [-adfpruvw] [-t ufs | external_type]",
694" mount [-dfpruvw] special | node");
695 exit(1);
696}
697
698void
699putfsent(ent)
700 const struct statfs *ent;
701{
702 struct fstab *fst;
703 char *opts;
704
705 opts = flags2opts(ent->f_flags);
706 printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname,
707 ent->f_fstypename, opts);
708 free(opts);
709
710 if ((fst = getfsspec(ent->f_mntfromname)))
711 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
712 else if ((fst = getfsfile(ent->f_mntonname)))
713 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
714 else if (strcmp(ent->f_fstypename, "ufs") == 0) {
715 if (strcmp(ent->f_mntonname, "/") == 0)
716 printf("\t1 1\n");
717 else
718 printf("\t2 2\n");
719 } else
720 printf("\t0 0\n");
721}
722
723
724char *
725flags2opts(flags)
726 int flags;
727{
728 char *res;
729
730 res = NULL;
731
732 res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw");
733
734 if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync");
735 if (flags & MNT_NOEXEC) res = catopt(res, "noexec");
736 if (flags & MNT_NOSUID) res = catopt(res, "nosuid");
737 if (flags & MNT_NODEV) res = catopt(res, "nodev");
738 if (flags & MNT_UNION) res = catopt(res, "union");
739 if (flags & MNT_ASYNC) res = catopt(res, "async");
740 if (flags & MNT_NOATIME) res = catopt(res, "noatime");
741 if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr");
742 if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw");
743 if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow");
744 if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir");
745
746 return res;
747}
|