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Commit | Line | Data |
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97073441 KZ |
1 | /* |
2 | * mount(8) -- mount a filesystem | |
3 | * | |
4 | * Copyright (C) 2011 Red Hat, Inc. All rights reserved. | |
5 | * Written by Karel Zak <kzak@redhat.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it would be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
7cebf0bb SK |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
97073441 KZ |
20 | */ |
21 | ||
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <errno.h> | |
25 | #include <string.h> | |
26 | #include <getopt.h> | |
97073441 KZ |
27 | #include <unistd.h> |
28 | #include <sys/types.h> | |
dbae36fe | 29 | #include <sys/mman.h> |
ce433404 | 30 | #include <sys/stat.h> |
2e86597f | 31 | #include <stdarg.h> |
2a1f429a | 32 | #include <libmount.h> |
5f7c1890 | 33 | #include <ctype.h> |
2a1f429a | 34 | |
97073441 KZ |
35 | #include "nls.h" |
36 | #include "c.h" | |
6189ace3 | 37 | #include "env.h" |
dbae36fe | 38 | #include "strutils.h" |
497d2ce7 | 39 | #include "exitcodes.h" |
a5ebeca5 | 40 | #include "xalloc.h" |
efb8854f | 41 | #include "closestream.h" |
5ebbc386 | 42 | #include "canonicalize.h" |
97073441 | 43 | |
38483b86 SK |
44 | #define OPTUTILS_EXIT_CODE MOUNT_EX_USAGE |
45 | #include "optutils.h" | |
46 | ||
97073441 | 47 | /*** TODO: DOCS: |
374fd21a KZ |
48 | * |
49 | * --options-mode={ignore,append,prepend,replace} MNT_OMODE_{IGNORE, ...} | |
50 | * --options-source={fstab,mtab,disable} MNT_OMODE_{FSTAB,MTAB,NOTAB} | |
51 | * --options-source-force MNT_OMODE_FORCE | |
97073441 KZ |
52 | */ |
53 | ||
ce433404 | 54 | static int readwrite; |
dbae36fe | 55 | |
d946359a KZ |
56 | static int mk_exit_code(struct libmnt_context *cxt, int rc); |
57 | ||
97073441 KZ |
58 | static void __attribute__((__noreturn__)) exit_non_root(const char *option) |
59 | { | |
60 | const uid_t ruid = getuid(); | |
61 | const uid_t euid = geteuid(); | |
62 | ||
63 | if (ruid == 0 && euid != 0) { | |
64 | /* user is root, but setuid to non-root */ | |
65 | if (option) | |
497d2ce7 | 66 | errx(MOUNT_EX_USAGE, _("only root can use \"--%s\" option " |
97073441 KZ |
67 | "(effective UID is %u)"), |
68 | option, euid); | |
497d2ce7 | 69 | errx(MOUNT_EX_USAGE, _("only root can do that " |
97073441 KZ |
70 | "(effective UID is %u)"), euid); |
71 | } | |
72 | if (option) | |
497d2ce7 KZ |
73 | errx(MOUNT_EX_USAGE, _("only root can use \"--%s\" option"), option); |
74 | errx(MOUNT_EX_USAGE, _("only root can do that")); | |
97073441 KZ |
75 | } |
76 | ||
77 | static void __attribute__((__noreturn__)) print_version(void) | |
78 | { | |
79 | const char *ver = NULL; | |
ac8ecab4 | 80 | const char **features = NULL, **p; |
97073441 KZ |
81 | |
82 | mnt_get_library_version(&ver); | |
ac8ecab4 KZ |
83 | mnt_get_library_features(&features); |
84 | ||
85 | printf(_("%s from %s (libmount %s"), | |
86 | program_invocation_short_name, | |
87 | PACKAGE_STRING, | |
88 | ver); | |
89 | p = features; | |
90 | while (p && *p) { | |
91 | fputs(p == features ? ": " : ", ", stdout); | |
92 | fputs(*p++, stdout); | |
93 | } | |
94 | fputs(")\n", stdout); | |
497d2ce7 | 95 | exit(MOUNT_EX_SUCCESS); |
97073441 KZ |
96 | } |
97 | ||
7fc6d2b8 | 98 | static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)), |
9f7472b0 KZ |
99 | const char *filename, int line) |
100 | { | |
101 | if (filename) | |
102 | warnx(_("%s: parse error: ignore entry at line %d."), | |
103 | filename, line); | |
104 | return 0; | |
105 | } | |
106 | ||
5f7c1890 KZ |
107 | /* |
108 | * Replace control chars with '?' to be compatible with coreutils. For more | |
109 | * robust solution use findmnt(1) where we use \x?? hex encoding. | |
110 | */ | |
111 | static void safe_fputs(const char *data) | |
112 | { | |
113 | const char *p; | |
114 | ||
115 | for (p = data; p && *p; p++) { | |
116 | if (iscntrl((unsigned char) *p)) | |
117 | fputc('?', stdout); | |
118 | else | |
119 | fputc(*p, stdout); | |
120 | } | |
121 | } | |
122 | ||
11754572 | 123 | static void print_all(struct libmnt_context *cxt, char *pattern, int show_label) |
97073441 | 124 | { |
68164f6c | 125 | struct libmnt_table *tb; |
a0c014dc | 126 | struct libmnt_iter *itr = NULL; |
68164f6c KZ |
127 | struct libmnt_fs *fs; |
128 | struct libmnt_cache *cache = NULL; | |
97073441 | 129 | |
11754572 | 130 | if (mnt_context_get_mtab(cxt, &tb)) |
497d2ce7 | 131 | err(MOUNT_EX_SYSERR, _("failed to read mtab")); |
97073441 KZ |
132 | |
133 | itr = mnt_new_iter(MNT_ITER_FORWARD); | |
11754572 | 134 | if (!itr) |
497d2ce7 | 135 | err(MOUNT_EX_SYSERR, _("failed to initialize libmount iterator")); |
97073441 KZ |
136 | if (show_label) |
137 | cache = mnt_new_cache(); | |
138 | ||
9f7472b0 | 139 | while (mnt_table_next_fs(tb, itr, &fs) == 0) { |
97073441 KZ |
140 | const char *type = mnt_fs_get_fstype(fs); |
141 | const char *src = mnt_fs_get_source(fs); | |
7cf389f7 | 142 | const char *optstr = mnt_fs_get_options(fs); |
aa397ce5 | 143 | char *xsrc = NULL; |
97073441 KZ |
144 | |
145 | if (type && pattern && !mnt_match_fstype(type, pattern)) | |
146 | continue; | |
147 | ||
aa397ce5 DR |
148 | if (!mnt_fs_is_pseudofs(fs)) |
149 | xsrc = mnt_pretty_path(src, cache); | |
5f7c1890 KZ |
150 | printf ("%s on ", xsrc ? xsrc : src); |
151 | safe_fputs(mnt_fs_get_target(fs)); | |
152 | ||
97073441 KZ |
153 | if (type) |
154 | printf (" type %s", type); | |
155 | if (optstr) | |
156 | printf (" (%s)", optstr); | |
157 | if (show_label && src) { | |
158 | char *lb = mnt_cache_find_tag_value(cache, src, "LABEL"); | |
159 | if (lb) | |
160 | printf (" [%s]", lb); | |
161 | } | |
162 | fputc('\n', stdout); | |
2576b4e7 | 163 | free(xsrc); |
97073441 | 164 | } |
11754572 | 165 | |
97073441 | 166 | mnt_free_cache(cache); |
b192b7b9 | 167 | mnt_free_iter(itr); |
97073441 KZ |
168 | } |
169 | ||
9f7472b0 KZ |
170 | /* |
171 | * mount -a [-F] | |
9f7472b0 | 172 | */ |
d2c97887 | 173 | static int mount_all(struct libmnt_context *cxt) |
a9ae3955 | 174 | { |
9f7472b0 KZ |
175 | struct libmnt_iter *itr; |
176 | struct libmnt_fs *fs; | |
497d2ce7 | 177 | int mntrc, ignored, rc = MOUNT_EX_SUCCESS; |
9f7472b0 | 178 | |
16b73aae KZ |
179 | int nsucc = 0, nerrs = 0; |
180 | ||
9f7472b0 KZ |
181 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
182 | if (!itr) { | |
183 | warn(_("failed to initialize libmount iterator")); | |
497d2ce7 | 184 | return MOUNT_EX_SYSERR; |
9f7472b0 KZ |
185 | } |
186 | ||
187 | while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) { | |
188 | ||
189 | const char *tgt = mnt_fs_get_target(fs); | |
190 | ||
191 | if (ignored) { | |
192 | if (mnt_context_is_verbose(cxt)) | |
b3f7a0ec KZ |
193 | printf(ignored == 1 ? _("%-25s: ignored\n") : |
194 | _("%-25s: already mounted\n"), | |
9f7472b0 | 195 | tgt); |
d2c97887 | 196 | } else if (mnt_context_is_fork(cxt)) { |
d946359a KZ |
197 | if (mnt_context_is_verbose(cxt)) |
198 | printf("%-25s: mount successfully forked\n", tgt); | |
9f7472b0 | 199 | } else { |
16b73aae | 200 | mk_exit_code(cxt, mntrc); /* to print warnings */ |
9f7472b0 | 201 | |
d946359a | 202 | if (mnt_context_get_status(cxt)) { |
16b73aae | 203 | nsucc++; |
d946359a KZ |
204 | |
205 | if (mnt_context_is_verbose(cxt)) | |
206 | printf("%-25s: successfully mounted\n", tgt); | |
16b73aae KZ |
207 | } else |
208 | nerrs++; | |
9f7472b0 KZ |
209 | } |
210 | } | |
211 | ||
d2c97887 KZ |
212 | if (mnt_context_is_parent(cxt)) { |
213 | /* wait for mount --fork children */ | |
16b73aae KZ |
214 | int nchildren = 0; |
215 | ||
216 | nerrs = 0, nsucc = 0; | |
d2c97887 KZ |
217 | |
218 | rc = mnt_context_wait_for_children(cxt, &nchildren, &nerrs); | |
219 | if (!rc && nchildren) | |
16b73aae | 220 | nsucc = nchildren - nerrs; |
d2c97887 KZ |
221 | } |
222 | ||
16b73aae KZ |
223 | if (nerrs == 0) |
224 | rc = MOUNT_EX_SUCCESS; /* all success */ | |
225 | else if (nsucc == 0) | |
226 | rc = MOUNT_EX_FAIL; /* all failed */ | |
227 | else | |
228 | rc = MOUNT_EX_SOMEOK; /* some success, some failed */ | |
229 | ||
25609ee1 | 230 | mnt_free_iter(itr); |
9f7472b0 | 231 | return rc; |
a9ae3955 KZ |
232 | } |
233 | ||
84600ddc KZ |
234 | static void success_message(struct libmnt_context *cxt) |
235 | { | |
236 | unsigned long mflags = 0; | |
f5ae1d70 | 237 | const char *tgt, *src, *pr = program_invocation_short_name; |
84600ddc KZ |
238 | |
239 | if (mnt_context_helper_executed(cxt) | |
240 | || mnt_context_get_status(cxt) != 1) | |
241 | return; | |
242 | ||
243 | mnt_context_get_mflags(cxt, &mflags); | |
244 | tgt = mnt_context_get_target(cxt); | |
245 | src = mnt_context_get_source(cxt); | |
246 | ||
247 | if (mflags & MS_MOVE) | |
f5ae1d70 | 248 | printf(_("%s: %s moved to %s.\n"), pr, src, tgt); |
84600ddc | 249 | else if (mflags & MS_BIND) |
9b4257c8 | 250 | printf(_("%s: %s bound on %s.\n"), pr, src, tgt); |
b4ec4573 KZ |
251 | else if (mflags & MS_PROPAGATION) { |
252 | if (src && strcmp(src, "none") != 0 && tgt) | |
253 | printf(_("%s: %s mounted on %s.\n"), pr, src, tgt); | |
254 | ||
f5ae1d70 | 255 | printf(_("%s: %s propagation flags changed.\n"), pr, tgt); |
b4ec4573 | 256 | } else |
f5ae1d70 | 257 | printf(_("%s: %s mounted on %s.\n"), pr, src, tgt); |
84600ddc KZ |
258 | } |
259 | ||
ce433404 KZ |
260 | /* |
261 | * Handles generic errors like ENOMEM, ... | |
262 | * | |
263 | * rc = 0 success | |
264 | * <0 error (usually -errno) | |
265 | * | |
497d2ce7 | 266 | * Returns exit status (MOUNT_EX_*) and prints error message. |
ce433404 | 267 | */ |
2e86597f | 268 | static int handle_generic_errors(int rc, const char *msg, ...) |
ce433404 | 269 | { |
2e86597f KZ |
270 | va_list va; |
271 | ||
272 | va_start(va, msg); | |
ce433404 KZ |
273 | errno = -rc; |
274 | ||
275 | switch(errno) { | |
276 | case EINVAL: | |
277 | case EPERM: | |
2e86597f | 278 | vwarn(msg, va); |
497d2ce7 | 279 | rc = MOUNT_EX_USAGE; |
2e86597f | 280 | break; |
ce433404 | 281 | case ENOMEM: |
2e86597f | 282 | vwarn(msg, va); |
497d2ce7 | 283 | rc = MOUNT_EX_SYSERR; |
2e86597f | 284 | break; |
ce433404 | 285 | default: |
2e86597f | 286 | vwarn(msg, va); |
497d2ce7 | 287 | rc = MOUNT_EX_FAIL; |
ce433404 KZ |
288 | break; |
289 | } | |
2e86597f KZ |
290 | va_end(va); |
291 | return rc; | |
ce433404 KZ |
292 | } |
293 | ||
4e45dfb9 KZ |
294 | #if defined(HAVE_LIBSELINUX) && defined(HAVE_SECURITY_GET_INITIAL_CONTEXT) |
295 | #include <selinux/selinux.h> | |
296 | #include <selinux/context.h> | |
297 | ||
298 | static void selinux_warning(struct libmnt_context *cxt, const char *tgt) | |
299 | { | |
300 | ||
301 | if (tgt && mnt_context_is_verbose(cxt) && is_selinux_enabled() > 0) { | |
302 | security_context_t raw = NULL, def = NULL; | |
303 | ||
304 | if (getfilecon(tgt, &raw) > 0 | |
305 | && security_get_initial_context("file", &def) == 0) { | |
306 | ||
307 | if (!selinux_file_context_cmp(raw, def)) | |
308 | printf(_( | |
309 | "mount: %s does not contain SELinux labels.\n" | |
310 | " You just mounted an file system that supports labels which does not\n" | |
311 | " contain labels, onto an SELinux box. It is likely that confined\n" | |
312 | " applications will generate AVC messages and not be allowed access to\n" | |
313 | " this file system. For more details see restorecon(8) and mount(8).\n"), | |
314 | tgt); | |
315 | } | |
316 | freecon(raw); | |
317 | freecon(def); | |
318 | } | |
319 | } | |
320 | #else | |
b8c0f4fb | 321 | # define selinux_warning(_x, _y) |
4e45dfb9 KZ |
322 | #endif |
323 | ||
fcc0413a KZ |
324 | /* |
325 | * Returns 1 if @dir parent is shared | |
326 | */ | |
327 | static int is_shared_tree(struct libmnt_context *cxt, const char *dir) | |
328 | { | |
329 | struct libmnt_table *tb = NULL; | |
330 | struct libmnt_fs *fs; | |
331 | unsigned long mflags = 0; | |
332 | char *mnt = NULL, *p; | |
333 | int rc = 0; | |
334 | ||
335 | if (!dir) | |
336 | return 0; | |
337 | if (mnt_context_get_mtab(cxt, &tb) || !tb) | |
338 | goto done; | |
339 | mnt = xstrdup(dir); | |
340 | p = strrchr(mnt, '/'); | |
341 | if (!p) | |
342 | goto done; | |
343 | if (p > mnt) | |
344 | *p = '\0'; | |
345 | fs = mnt_table_find_mountpoint(tb, mnt, MNT_ITER_BACKWARD); | |
346 | ||
347 | rc = fs && mnt_fs_is_kernel(fs) | |
348 | && mnt_fs_get_propagation(fs, &mflags) == 0 | |
349 | && (mflags & MS_SHARED); | |
350 | done: | |
351 | free(mnt); | |
352 | return rc; | |
353 | } | |
354 | ||
ce433404 KZ |
355 | /* |
356 | * rc = 0 success | |
357 | * <0 error (usually -errno or -1) | |
358 | * | |
497d2ce7 | 359 | * Returns exit status (MOUNT_EX_*) and/or prints error message. |
ce433404 KZ |
360 | */ |
361 | static int mk_exit_code(struct libmnt_context *cxt, int rc) | |
362 | { | |
363 | int syserr; | |
364 | struct stat st; | |
365 | unsigned long uflags = 0, mflags = 0; | |
366 | ||
367 | int restricted = mnt_context_is_restricted(cxt); | |
368 | const char *tgt = mnt_context_get_target(cxt); | |
369 | const char *src = mnt_context_get_source(cxt); | |
370 | ||
371 | try_readonly: | |
be6904b9 | 372 | if (mnt_context_helper_executed(cxt)) { |
ce433404 KZ |
373 | /* |
374 | * /sbin/mount.<type> called, return status | |
375 | */ | |
be6904b9 KZ |
376 | if (rc == -MNT_ERR_APPLYFLAGS) |
377 | warnx(_("WARNING: failed to apply propagation flags")); | |
ce433404 | 378 | return mnt_context_get_helper_status(cxt); |
be6904b9 | 379 | } |
ce433404 | 380 | |
4e45dfb9 | 381 | if (rc == 0 && mnt_context_get_status(cxt) == 1) { |
ce433404 KZ |
382 | /* |
383 | * Libmount success && syscall success. | |
384 | */ | |
4e45dfb9 KZ |
385 | selinux_warning(cxt, tgt); |
386 | ||
497d2ce7 | 387 | return MOUNT_EX_SUCCESS; /* mount(2) success */ |
4e45dfb9 | 388 | } |
ce433404 | 389 | |
10389b1e KZ |
390 | mnt_context_get_mflags(cxt, &mflags); /* mount(2) flags */ |
391 | mnt_context_get_user_mflags(cxt, &uflags); /* userspace flags */ | |
392 | ||
ce433404 KZ |
393 | if (!mnt_context_syscall_called(cxt)) { |
394 | /* | |
8b470b20 | 395 | * libmount errors (extra library checks) |
ce433404 | 396 | */ |
8b470b20 KZ |
397 | switch (rc) { |
398 | case -EPERM: | |
ce433404 | 399 | warnx(_("only root can mount %s on %s"), src, tgt); |
497d2ce7 | 400 | return MOUNT_EX_USAGE; |
8b470b20 KZ |
401 | case -EBUSY: |
402 | warnx(_("%s is already mounted"), src); | |
497d2ce7 | 403 | return MOUNT_EX_USAGE; |
ba24923e | 404 | case -MNT_ERR_NOFSTAB: |
aedeaa40 KZ |
405 | if (mnt_context_is_swapmatch(cxt)) { |
406 | warnx(_("can't find %s in %s"), | |
407 | src ? src : tgt, | |
ce433404 | 408 | mnt_get_fstab_path()); |
aedeaa40 KZ |
409 | return MOUNT_EX_USAGE; |
410 | } | |
411 | /* source/target explicitly defined */ | |
412 | if (tgt) | |
413 | warnx(_("can't find mountpoint %s in %s"), | |
414 | tgt, mnt_get_fstab_path()); | |
415 | else | |
416 | warnx(_("can't find mount source %s in %s"), | |
417 | src, mnt_get_fstab_path()); | |
497d2ce7 | 418 | return MOUNT_EX_USAGE; |
82a2c160 KZ |
419 | case -MNT_ERR_AMBIFS: |
420 | warnx(_("%s: more filesystems detected. This should not happen,\n" | |
421 | " use -t <type> to explicitly specify the filesystem type or\n" | |
422 | " use wipefs(8) to clean up the device."), src); | |
423 | return MOUNT_EX_USAGE; | |
ba24923e | 424 | case -MNT_ERR_NOFSTYPE: |
ce433404 KZ |
425 | if (restricted) |
426 | warnx(_("I could not determine the filesystem type, " | |
427 | "and none was specified")); | |
428 | else | |
429 | warnx(_("you must specify the filesystem type")); | |
497d2ce7 | 430 | return MOUNT_EX_USAGE; |
ba24923e KZ |
431 | case -MNT_ERR_NOSOURCE: |
432 | if (src) | |
433 | warnx(_("can't find %s"), src); | |
434 | else | |
435 | warnx(_("mount source not defined")); | |
436 | return MOUNT_EX_USAGE; | |
61f5ff6c KZ |
437 | case -MNT_ERR_MOUNTOPT: |
438 | if (errno) | |
439 | warn(_("failed to parse mount options")); | |
440 | else | |
441 | warnx(_("failed to parse mount options")); | |
442 | return MOUNT_EX_USAGE; | |
10389b1e | 443 | case -MNT_ERR_LOOPDEV: |
5cf05c71 | 444 | warn(_("%s: failed to setup loop device"), src); |
10389b1e | 445 | return MOUNT_EX_FAIL; |
ba24923e KZ |
446 | default: |
447 | return handle_generic_errors(rc, _("%s: mount failed"), | |
448 | tgt ? tgt : src); | |
449 | } | |
ce433404 KZ |
450 | } else if (mnt_context_get_syscall_errno(cxt) == 0) { |
451 | /* | |
452 | * mount(2) syscall success, but something else failed | |
453 | * (probably error in mtab processing). | |
454 | */ | |
455 | if (rc < 0) | |
456 | return handle_generic_errors(rc, | |
2e86597f KZ |
457 | _("%s: filesystem mounted, but mount(8) failed"), |
458 | tgt ? tgt : src); | |
ce433404 | 459 | |
497d2ce7 | 460 | return MOUNT_EX_SOFTWARE; /* internal error */ |
ce433404 KZ |
461 | |
462 | } | |
463 | ||
464 | /* | |
465 | * mount(2) errors | |
466 | */ | |
467 | syserr = mnt_context_get_syscall_errno(cxt); | |
468 | ||
ce433404 KZ |
469 | |
470 | switch(syserr) { | |
471 | case EPERM: | |
472 | if (geteuid() == 0) { | |
473 | if (stat(tgt, &st) || !S_ISDIR(st.st_mode)) | |
474 | warnx(_("mount point %s is not a directory"), tgt); | |
475 | else | |
476 | warnx(_("permission denied")); | |
477 | } else | |
478 | warnx(_("must be superuser to use mount")); | |
479 | break; | |
480 | ||
481 | case EBUSY: | |
482 | { | |
483 | struct libmnt_table *tb; | |
ce433404 KZ |
484 | |
485 | if (mflags & MS_REMOUNT) { | |
486 | warnx(_("%s is busy"), tgt); | |
487 | break; | |
488 | } | |
489 | ||
490 | warnx(_("%s is already mounted or %s busy"), src, tgt); | |
491 | ||
492 | if (src && mnt_context_get_mtab(cxt, &tb) == 0) { | |
493 | struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_FORWARD); | |
494 | struct libmnt_fs *fs; | |
495 | ||
496 | while(mnt_table_next_fs(tb, itr, &fs) == 0) { | |
497 | const char *s = mnt_fs_get_srcpath(fs), | |
498 | *t = mnt_fs_get_target(fs); | |
499 | ||
6699e742 | 500 | if (t && s && mnt_fs_streq_srcpath(fs, src)) |
ce433404 KZ |
501 | fprintf(stderr, _( |
502 | " %s is already mounted on %s\n"), s, t); | |
503 | } | |
504 | mnt_free_iter(itr); | |
505 | } | |
506 | break; | |
507 | } | |
508 | case ENOENT: | |
fcc0413a | 509 | if (tgt && lstat(tgt, &st)) |
ce433404 | 510 | warnx(_("mount point %s does not exist"), tgt); |
fcc0413a | 511 | else if (tgt && stat(tgt, &st)) |
ce433404 | 512 | warnx(_("mount point %s is a symbolic link to nowhere"), tgt); |
fcc0413a | 513 | else if (src && stat(src, &st)) { |
ce433404 | 514 | if (uflags & MNT_MS_NOFAIL) |
497d2ce7 | 515 | return MOUNT_EX_SUCCESS; |
ce433404 KZ |
516 | |
517 | warnx(_("special device %s does not exist"), src); | |
518 | } else { | |
519 | errno = syserr; | |
520 | warn(_("mount(2) failed")); /* print errno */ | |
521 | } | |
522 | break; | |
523 | ||
524 | case ENOTDIR: | |
525 | if (stat(tgt, &st) || ! S_ISDIR(st.st_mode)) | |
526 | warnx(_("mount point %s is not a directory"), tgt); | |
fcc0413a | 527 | else if (src && stat(src, &st) && errno == ENOTDIR) { |
ce433404 | 528 | if (uflags & MNT_MS_NOFAIL) |
497d2ce7 | 529 | return MOUNT_EX_SUCCESS; |
ce433404 KZ |
530 | |
531 | warnx(_("special device %s does not exist " | |
532 | "(a path prefix is not a directory)"), src); | |
533 | } else { | |
534 | errno = syserr; | |
535 | warn(_("mount(2) failed")); /* print errno */ | |
536 | } | |
537 | break; | |
538 | ||
539 | case EINVAL: | |
540 | if (mflags & MS_REMOUNT) | |
541 | warnx(_("%s not mounted or bad option"), tgt); | |
be6904b9 | 542 | else if (rc == -MNT_ERR_APPLYFLAGS) |
58f108ef | 543 | warnx(_("%s is not mountpoint or bad option"), tgt); |
fcc0413a KZ |
544 | else if ((mflags & MS_MOVE) && is_shared_tree(cxt, src)) |
545 | warnx(_("bad option. Note that moving a mount residing under a shared\n" | |
546 | " mount is unsupported.")); | |
ce433404 KZ |
547 | else |
548 | warnx(_("wrong fs type, bad option, bad superblock on %s,\n" | |
549 | " missing codepage or helper program, or other error"), | |
550 | src); | |
551 | ||
552 | if (mnt_fs_is_netfs(mnt_context_get_fs(cxt))) | |
553 | fprintf(stderr, _( | |
554 | " (for several filesystems (e.g. nfs, cifs) you might\n" | |
555 | " need a /sbin/mount.<type> helper program)\n")); | |
556 | ||
fcc0413a | 557 | fprintf(stderr, _("\n" |
ce433404 | 558 | " In some cases useful info is found in syslog - try\n" |
fcc0413a | 559 | " dmesg | tail or so.\n")); |
ce433404 KZ |
560 | break; |
561 | ||
562 | case EMFILE: | |
563 | warnx(_("mount table full")); | |
564 | break; | |
565 | ||
566 | case EIO: | |
567 | warnx(_("%s: can't read superblock"), src); | |
568 | break; | |
569 | ||
570 | case ENODEV: | |
571 | warnx(_("unknown filesystem type '%s'"), mnt_context_get_fstype(cxt)); | |
572 | break; | |
573 | ||
574 | case ENOTBLK: | |
575 | if (uflags & MNT_MS_NOFAIL) | |
497d2ce7 | 576 | return MOUNT_EX_SUCCESS; |
ce433404 KZ |
577 | |
578 | if (stat(src, &st)) | |
579 | warnx(_("%s is not a block device, and stat(2) fails?"), src); | |
580 | else if (S_ISBLK(st.st_mode)) | |
581 | warnx(_("the kernel does not recognize %s as a block device\n" | |
582 | " (maybe `modprobe driver'?)"), src); | |
583 | else if (S_ISREG(st.st_mode)) | |
584 | warnx(_("%s is not a block device (maybe try `-o loop'?)"), src); | |
585 | else | |
586 | warnx(_(" %s is not a block device"), src); | |
587 | break; | |
588 | ||
589 | case ENXIO: | |
590 | if (uflags & MNT_MS_NOFAIL) | |
497d2ce7 | 591 | return MOUNT_EX_SUCCESS; |
ce433404 KZ |
592 | |
593 | warnx(_("%s is not a valid block device"), src); | |
594 | break; | |
595 | ||
596 | case EACCES: | |
597 | case EROFS: | |
598 | if (mflags & MS_RDONLY) | |
599 | warnx(_("cannot mount %s read-only"), src); | |
600 | ||
601 | else if (readwrite) | |
602 | warnx(_("%s is write-protected but explicit `-w' flag given"), src); | |
603 | ||
604 | else if (mflags & MS_REMOUNT) | |
605 | warnx(_("cannot remount %s read-write, is write-protected"), src); | |
606 | ||
607 | else { | |
608 | warnx(_("%s is write-protected, mounting read-only"), src); | |
609 | ||
610 | mnt_context_reset_status(cxt); | |
611 | mnt_context_set_mflags(cxt, mflags | MS_RDONLY); | |
612 | rc = mnt_context_do_mount(cxt); | |
613 | if (!rc) | |
614 | rc = mnt_context_finalize_mount(cxt); | |
615 | ||
616 | goto try_readonly; | |
617 | } | |
618 | break; | |
619 | ||
620 | case ENOMEDIUM: | |
621 | warnx(_("no medium found on %s"), src); | |
622 | break; | |
623 | ||
624 | default: | |
625 | warn(_("mount %s on %s failed"), src, tgt); | |
626 | break; | |
627 | } | |
628 | ||
497d2ce7 | 629 | return MOUNT_EX_FAIL; |
ce433404 KZ |
630 | } |
631 | ||
64b6bc4f KZ |
632 | static struct libmnt_table *append_fstab(struct libmnt_context *cxt, |
633 | struct libmnt_table *fstab, | |
634 | const char *path) | |
635 | { | |
636 | ||
637 | if (!fstab) { | |
638 | fstab = mnt_new_table(); | |
639 | if (!fstab) | |
640 | err(MOUNT_EX_SYSERR, _("failed to initialize libmount table")); | |
641 | ||
642 | mnt_table_set_parser_errcb(fstab, table_parser_errcb); | |
643 | mnt_context_set_fstab(cxt, fstab); | |
644 | } | |
645 | ||
646 | if (mnt_table_parse_fstab(fstab, path)) | |
647 | errx(MOUNT_EX_USAGE,_("%s: failed to parse"), path); | |
648 | ||
649 | return fstab; | |
650 | } | |
651 | ||
5ebbc386 KZ |
652 | /* |
653 | * Check source and target paths -- non-root user should not be able to | |
654 | * resolve paths which are unreadable for him. | |
655 | */ | |
656 | static void sanitize_paths(struct libmnt_context *cxt) | |
657 | { | |
658 | const char *p; | |
659 | struct libmnt_fs *fs = mnt_context_get_fs(cxt); | |
660 | ||
661 | if (!fs) | |
662 | return; | |
663 | ||
664 | p = mnt_fs_get_target(fs); | |
665 | if (p) { | |
666 | char *np = canonicalize_path_restricted(p); | |
667 | if (!np) | |
668 | err(MOUNT_EX_USAGE, "%s", p); | |
669 | mnt_fs_set_target(fs, np); | |
670 | free(np); | |
671 | } | |
672 | ||
673 | p = mnt_fs_get_srcpath(fs); | |
674 | if (p) { | |
675 | char *np = canonicalize_path_restricted(p); | |
676 | if (!np) | |
677 | err(MOUNT_EX_USAGE, "%s", p); | |
678 | mnt_fs_set_source(fs, np); | |
679 | free(np); | |
680 | } | |
681 | } | |
682 | ||
be6904b9 KZ |
683 | static void append_option(struct libmnt_context *cxt, const char *opt) |
684 | { | |
685 | if (mnt_context_append_options(cxt, opt)) | |
686 | err(MOUNT_EX_SYSERR, _("failed to append option '%s'"), opt); | |
687 | } | |
688 | ||
97073441 KZ |
689 | static void __attribute__((__noreturn__)) usage(FILE *out) |
690 | { | |
e4c92d06 KZ |
691 | fputs(USAGE_HEADER, out); |
692 | fprintf(out, _( | |
97073441 KZ |
693 | " %1$s [-lhV]\n" |
694 | " %1$s -a [options]\n" | |
aedeaa40 | 695 | " %1$s [options] [--source] <source> | [--target] <directory>\n" |
97073441 KZ |
696 | " %1$s [options] <source> <directory>\n" |
697 | " %1$s <operation> <mountpoint> [<target>]\n"), | |
698 | program_invocation_short_name); | |
699 | ||
e4c92d06 | 700 | fputs(USAGE_OPTIONS, out); |
97073441 | 701 | fprintf(out, _( |
97073441 | 702 | " -a, --all mount all filesystems mentioned in fstab\n" |
97073441 | 703 | " -c, --no-canonicalize don't canonicalize paths\n" |
eaca47f7 | 704 | " -f, --fake dry run; skip the mount(2) syscall\n" |
64b6bc4f KZ |
705 | " -F, --fork fork off for each device (use with -a)\n" |
706 | " -T, --fstab <path> alternative file to /etc/fstab\n")); | |
eaca47f7 BS |
707 | fprintf(out, _( |
708 | " -h, --help display this help text and exit\n" | |
97073441 KZ |
709 | " -i, --internal-only don't call the mount.<type> helpers\n" |
710 | " -l, --show-labels lists all mounts with LABELs\n" | |
eaca47f7 BS |
711 | " -n, --no-mtab don't write to /etc/mtab\n")); |
712 | fprintf(out, _( | |
713 | " -o, --options <list> comma-separated list of mount options\n" | |
714 | " -O, --test-opts <list> limit the set of filesystems (use with -a)\n" | |
715 | " -r, --read-only mount the filesystem read-only (same as -o ro)\n" | |
716 | " -t, --types <list> limit the set of filesystem types\n")); | |
717 | fprintf(out, _( | |
aedeaa40 KZ |
718 | " --source <src> explicitly specifies source (path, label, uuid)\n" |
719 | " --target <target> explicitly specifies mountpoint\n")); | |
720 | fprintf(out, _( | |
eaca47f7 BS |
721 | " -v, --verbose say what is being done\n" |
722 | " -V, --version display version information and exit\n" | |
6d402bbe | 723 | " -w, --rw, --read-write mount the filesystem read-write (default)\n")); |
97073441 | 724 | |
e4c92d06 KZ |
725 | fputs(USAGE_SEPARATOR, out); |
726 | fputs(USAGE_HELP, out); | |
727 | fputs(USAGE_VERSION, out); | |
728 | ||
eaca47f7 | 729 | fprintf(out, _( |
97073441 KZ |
730 | "\nSource:\n" |
731 | " -L, --label <label> synonym for LABEL=<label>\n" | |
732 | " -U, --uuid <uuid> synonym for UUID=<uuid>\n" | |
733 | " LABEL=<label> specifies device by filesystem label\n" | |
eb0eb262 KZ |
734 | " UUID=<uuid> specifies device by filesystem UUID\n" |
735 | " PARTLABEL=<label> specifies device by partition label\n" | |
736 | " PARTUUID=<uuid> specifies device by partition UUID\n")); | |
737 | ||
eaca47f7 | 738 | fprintf(out, _( |
97073441 KZ |
739 | " <device> specifies device by path\n" |
740 | " <directory> mountpoint for bind mounts (see --bind/rbind)\n" | |
eaca47f7 | 741 | " <file> regular file for loopdev setup\n")); |
97073441 | 742 | |
eaca47f7 | 743 | fprintf(out, _( |
97073441 KZ |
744 | "\nOperations:\n" |
745 | " -B, --bind mount a subtree somewhere else (same as -o bind)\n" | |
746 | " -M, --move move a subtree to some other place\n" | |
eaca47f7 BS |
747 | " -R, --rbind mount a subtree and all submounts somewhere else\n")); |
748 | fprintf(out, _( | |
97073441 KZ |
749 | " --make-shared mark a subtree as shared\n" |
750 | " --make-slave mark a subtree as slave\n" | |
751 | " --make-private mark a subtree as private\n" | |
eaca47f7 BS |
752 | " --make-unbindable mark a subtree as unbindable\n")); |
753 | fprintf(out, _( | |
97073441 KZ |
754 | " --make-rshared recursively mark a whole subtree as shared\n" |
755 | " --make-rslave recursively mark a whole subtree as slave\n" | |
756 | " --make-rprivate recursively mark a whole subtree as private\n" | |
eaca47f7 | 757 | " --make-runbindable recursively mark a whole subtree as unbindable\n")); |
97073441 | 758 | |
e4c92d06 | 759 | fprintf(out, USAGE_MAN_TAIL("mount(8)")); |
97073441 | 760 | |
497d2ce7 | 761 | exit(out == stderr ? MOUNT_EX_USAGE : MOUNT_EX_SUCCESS); |
97073441 KZ |
762 | } |
763 | ||
764 | int main(int argc, char **argv) | |
765 | { | |
497d2ce7 | 766 | int c, rc = MOUNT_EX_SUCCESS, all = 0, show_labels = 0; |
68164f6c | 767 | struct libmnt_context *cxt; |
64b6bc4f | 768 | struct libmnt_table *fstab = NULL; |
aedeaa40 | 769 | char *srcbuf = NULL; |
97073441 KZ |
770 | char *types = NULL; |
771 | unsigned long oper = 0; | |
be6904b9 | 772 | int propa = 0; |
97073441 | 773 | |
2492f713 KZ |
774 | enum { |
775 | MOUNT_OPT_SHARED = CHAR_MAX + 1, | |
776 | MOUNT_OPT_SLAVE, | |
777 | MOUNT_OPT_PRIVATE, | |
778 | MOUNT_OPT_UNBINDABLE, | |
779 | MOUNT_OPT_RSHARED, | |
780 | MOUNT_OPT_RSLAVE, | |
781 | MOUNT_OPT_RPRIVATE, | |
aedeaa40 KZ |
782 | MOUNT_OPT_RUNBINDABLE, |
783 | MOUNT_OPT_TARGET, | |
784 | MOUNT_OPT_SOURCE | |
2492f713 KZ |
785 | }; |
786 | ||
6c7d5ae9 | 787 | static const struct option longopts[] = { |
97073441 KZ |
788 | { "all", 0, 0, 'a' }, |
789 | { "fake", 0, 0, 'f' }, | |
64b6bc4f | 790 | { "fstab", 1, 0, 'T' }, |
97073441 KZ |
791 | { "fork", 0, 0, 'F' }, |
792 | { "help", 0, 0, 'h' }, | |
793 | { "no-mtab", 0, 0, 'n' }, | |
794 | { "read-only", 0, 0, 'r' }, | |
795 | { "ro", 0, 0, 'r' }, | |
796 | { "verbose", 0, 0, 'v' }, | |
797 | { "version", 0, 0, 'V' }, | |
798 | { "read-write", 0, 0, 'w' }, | |
799 | { "rw", 0, 0, 'w' }, | |
800 | { "options", 1, 0, 'o' }, | |
801 | { "test-opts", 1, 0, 'O' }, | |
dbae36fe | 802 | { "pass-fd", 1, 0, 'p' }, |
97073441 KZ |
803 | { "types", 1, 0, 't' }, |
804 | { "uuid", 1, 0, 'U' }, | |
805 | { "label", 1, 0, 'L'}, | |
806 | { "bind", 0, 0, 'B' }, | |
807 | { "move", 0, 0, 'M' }, | |
808 | { "rbind", 0, 0, 'R' }, | |
2492f713 KZ |
809 | { "make-shared", 0, 0, MOUNT_OPT_SHARED }, |
810 | { "make-slave", 0, 0, MOUNT_OPT_SLAVE }, | |
811 | { "make-private", 0, 0, MOUNT_OPT_PRIVATE }, | |
812 | { "make-unbindable", 0, 0, MOUNT_OPT_UNBINDABLE }, | |
813 | { "make-rshared", 0, 0, MOUNT_OPT_RSHARED }, | |
814 | { "make-rslave", 0, 0, MOUNT_OPT_RSLAVE }, | |
815 | { "make-rprivate", 0, 0, MOUNT_OPT_RPRIVATE }, | |
816 | { "make-runbindable", 0, 0, MOUNT_OPT_RUNBINDABLE }, | |
97073441 KZ |
817 | { "no-canonicalize", 0, 0, 'c' }, |
818 | { "internal-only", 0, 0, 'i' }, | |
819 | { "show-labels", 0, 0, 'l' }, | |
aedeaa40 KZ |
820 | { "target", 1, 0, MOUNT_OPT_TARGET }, |
821 | { "source", 1, 0, MOUNT_OPT_SOURCE }, | |
97073441 KZ |
822 | { NULL, 0, 0, 0 } |
823 | }; | |
824 | ||
51a37c19 | 825 | static const ul_excl_t excl[] = { /* rows and cols in in ASCII order */ |
be6904b9 | 826 | { 'B','M','R' }, /* bind,move,rbind */ |
51a37c19 KZ |
827 | { 'L','U', MOUNT_OPT_SOURCE }, /* label,uuid,source */ |
828 | { 0 } | |
829 | }; | |
830 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
831 | ||
6189ace3 | 832 | sanitize_env(); |
97073441 KZ |
833 | setlocale(LC_ALL, ""); |
834 | bindtextdomain(PACKAGE, LOCALEDIR); | |
835 | textdomain(PACKAGE); | |
efb8854f | 836 | atexit(close_stdout); |
97073441 KZ |
837 | |
838 | mnt_init_debug(0); | |
839 | cxt = mnt_new_context(); | |
840 | if (!cxt) | |
497d2ce7 | 841 | err(MOUNT_EX_SYSERR, _("libmount context allocation failed")); |
97073441 | 842 | |
9f7472b0 KZ |
843 | mnt_context_set_tables_errcb(cxt, table_parser_errcb); |
844 | ||
64b6bc4f | 845 | while ((c = getopt_long(argc, argv, "aBcfFhilL:Mno:O:p:rRsU:vVwt:T:", |
97073441 KZ |
846 | longopts, NULL)) != -1) { |
847 | ||
848 | /* only few options are allowed for non-root users */ | |
aedeaa40 | 849 | if (mnt_context_is_restricted(cxt) && |
1707b9b1 | 850 | !strchr("hlLUVvprist", c) && |
aedeaa40 KZ |
851 | c != MOUNT_OPT_TARGET && |
852 | c != MOUNT_OPT_SOURCE) | |
732a6311 | 853 | exit_non_root(option_to_longopt(c, longopts)); |
97073441 | 854 | |
51a37c19 KZ |
855 | err_exclusive_options(c, longopts, excl, excl_st); |
856 | ||
97073441 KZ |
857 | switch(c) { |
858 | case 'a': | |
859 | all = 1; | |
97073441 KZ |
860 | break; |
861 | case 'c': | |
862 | mnt_context_disable_canonicalize(cxt, TRUE); | |
863 | break; | |
864 | case 'f': | |
865 | mnt_context_enable_fake(cxt, TRUE); | |
866 | break; | |
867 | case 'F': | |
d2c97887 | 868 | mnt_context_enable_fork(cxt, TRUE); |
97073441 KZ |
869 | break; |
870 | case 'h': | |
871 | usage(stdout); | |
872 | break; | |
873 | case 'i': | |
874 | mnt_context_disable_helpers(cxt, TRUE); | |
875 | break; | |
876 | case 'n': | |
877 | mnt_context_disable_mtab(cxt, TRUE); | |
878 | break; | |
879 | case 'r': | |
be6904b9 | 880 | append_option(cxt, "ro"); |
ce433404 | 881 | readwrite = 0; |
97073441 KZ |
882 | break; |
883 | case 'v': | |
884 | mnt_context_enable_verbose(cxt, TRUE); | |
885 | break; | |
886 | case 'V': | |
887 | print_version(); | |
888 | break; | |
889 | case 'w': | |
be6904b9 | 890 | append_option(cxt, "rw"); |
ce433404 | 891 | readwrite = 1; |
97073441 KZ |
892 | break; |
893 | case 'o': | |
be6904b9 | 894 | append_option(cxt, optarg); |
97073441 KZ |
895 | break; |
896 | case 'O': | |
897 | if (mnt_context_set_options_pattern(cxt, optarg)) | |
497d2ce7 | 898 | err(MOUNT_EX_SYSERR, _("failed to set options pattern")); |
97073441 | 899 | break; |
dbae36fe | 900 | case 'p': |
5cf05c71 | 901 | warnx(_("--pass-fd is no longer supported")); |
dbae36fe | 902 | break; |
97073441 | 903 | case 'L': |
aedeaa40 KZ |
904 | xasprintf(&srcbuf, "LABEL=\"%s\"", optarg); |
905 | mnt_context_disable_swapmatch(cxt, 1); | |
906 | mnt_context_set_source(cxt, srcbuf); | |
907 | free(srcbuf); | |
908 | break; | |
97073441 | 909 | case 'U': |
aedeaa40 KZ |
910 | xasprintf(&srcbuf, "UUID=\"%s\"", optarg); |
911 | mnt_context_disable_swapmatch(cxt, 1); | |
912 | mnt_context_set_source(cxt, srcbuf); | |
913 | free(srcbuf); | |
97073441 KZ |
914 | break; |
915 | case 'l': | |
916 | show_labels = 1; | |
917 | break; | |
918 | case 't': | |
919 | types = optarg; | |
920 | break; | |
64b6bc4f KZ |
921 | case 'T': |
922 | fstab = append_fstab(cxt, fstab, optarg); | |
923 | break; | |
97073441 KZ |
924 | case 's': |
925 | mnt_context_enable_sloppy(cxt, TRUE); | |
926 | break; | |
927 | case 'B': | |
d7890778 | 928 | oper |= MS_BIND; |
97073441 KZ |
929 | break; |
930 | case 'M': | |
d7890778 | 931 | oper |= MS_MOVE; |
97073441 KZ |
932 | break; |
933 | case 'R': | |
d7890778 | 934 | oper |= (MS_BIND | MS_REC); |
97073441 | 935 | break; |
2492f713 | 936 | case MOUNT_OPT_SHARED: |
be6904b9 KZ |
937 | append_option(cxt, "shared"); |
938 | propa = 1; | |
97073441 | 939 | break; |
2492f713 | 940 | case MOUNT_OPT_SLAVE: |
be6904b9 KZ |
941 | append_option(cxt, "slave"); |
942 | propa = 1; | |
97073441 | 943 | break; |
2492f713 | 944 | case MOUNT_OPT_PRIVATE: |
be6904b9 KZ |
945 | append_option(cxt, "private"); |
946 | propa = 1; | |
97073441 | 947 | break; |
2492f713 | 948 | case MOUNT_OPT_UNBINDABLE: |
be6904b9 KZ |
949 | append_option(cxt, "unbindable"); |
950 | propa = 1; | |
97073441 | 951 | break; |
2492f713 | 952 | case MOUNT_OPT_RSHARED: |
be6904b9 KZ |
953 | append_option(cxt, "rshared"); |
954 | propa = 1; | |
97073441 | 955 | break; |
2492f713 | 956 | case MOUNT_OPT_RSLAVE: |
be6904b9 KZ |
957 | append_option(cxt, "rslave"); |
958 | propa = 1; | |
97073441 | 959 | break; |
2492f713 | 960 | case MOUNT_OPT_RPRIVATE: |
be6904b9 KZ |
961 | append_option(cxt, "rprivate"); |
962 | propa = 1; | |
97073441 | 963 | break; |
2492f713 | 964 | case MOUNT_OPT_RUNBINDABLE: |
be6904b9 KZ |
965 | append_option(cxt, "runbindable"); |
966 | propa = 1; | |
97073441 | 967 | break; |
aedeaa40 KZ |
968 | case MOUNT_OPT_TARGET: |
969 | mnt_context_disable_swapmatch(cxt, 1); | |
970 | mnt_context_set_target(cxt, optarg); | |
971 | break; | |
972 | case MOUNT_OPT_SOURCE: | |
aedeaa40 KZ |
973 | mnt_context_disable_swapmatch(cxt, 1); |
974 | mnt_context_set_source(cxt, optarg); | |
975 | break; | |
97073441 KZ |
976 | default: |
977 | usage(stderr); | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
982 | argc -= optind; | |
983 | argv += optind; | |
984 | ||
59414c6b KZ |
985 | if (fstab && !mnt_context_is_nocanonicalize(cxt)) { |
986 | /* | |
987 | * We have external (context independent) fstab instance, let's | |
988 | * make a connection between the fstab and the canonicalization | |
989 | * cache. | |
990 | */ | |
991 | struct libmnt_cache *cache = mnt_context_get_cache(cxt); | |
992 | mnt_table_set_cache(fstab, cache); | |
993 | } | |
994 | ||
aedeaa40 KZ |
995 | if (!mnt_context_get_source(cxt) && |
996 | !mnt_context_get_target(cxt) && | |
997 | !argc && | |
998 | !all) { | |
be6904b9 | 999 | if (oper || mnt_context_get_options(cxt)) |
97073441 | 1000 | usage(stderr); |
11754572 | 1001 | print_all(cxt, types, show_labels); |
97073441 KZ |
1002 | goto done; |
1003 | } | |
1004 | ||
1707b9b1 RT |
1005 | /* Non-root users are allowed to use -t to print_all(), |
1006 | but not to mount */ | |
1007 | if (mnt_context_is_restricted(cxt) && types) | |
1008 | exit_non_root("types"); | |
1009 | ||
aedeaa40 | 1010 | if (oper && (types || all || mnt_context_get_source(cxt))) |
97073441 KZ |
1011 | usage(stderr); |
1012 | ||
9f7472b0 KZ |
1013 | if (types && (all || strchr(types, ',') || |
1014 | strncmp(types, "no", 2) == 0)) | |
97073441 KZ |
1015 | mnt_context_set_fstype_pattern(cxt, types); |
1016 | else if (types) | |
1017 | mnt_context_set_fstype(cxt, types); | |
1018 | ||
a9ae3955 KZ |
1019 | if (all) { |
1020 | /* | |
1021 | * A) Mount all | |
1022 | */ | |
d2c97887 | 1023 | rc = mount_all(cxt); |
11754572 | 1024 | goto done; |
a9ae3955 | 1025 | |
aedeaa40 KZ |
1026 | } else if (argc == 0 && (mnt_context_get_source(cxt) || |
1027 | mnt_context_get_target(cxt))) { | |
a9ae3955 | 1028 | /* |
aedeaa40 | 1029 | * B) mount -L|-U|--source|--target |
a9ae3955 | 1030 | */ |
aedeaa40 KZ |
1031 | if (mnt_context_is_restricted(cxt) && |
1032 | mnt_context_get_source(cxt) && | |
1033 | mnt_context_get_target(cxt)) | |
1034 | exit_non_root(NULL); | |
97073441 KZ |
1035 | |
1036 | } else if (argc == 1) { | |
a9ae3955 | 1037 | /* |
aedeaa40 | 1038 | * C) mount [-L|-U|--source] <target> |
a9ae3955 | 1039 | * mount <source|target> |
aedeaa40 KZ |
1040 | * |
1041 | * non-root may specify source *or* target, but not both | |
a9ae3955 | 1042 | */ |
aedeaa40 KZ |
1043 | if (mnt_context_is_restricted(cxt) && |
1044 | mnt_context_get_source(cxt)) | |
1045 | exit_non_root(NULL); | |
1046 | ||
97073441 KZ |
1047 | mnt_context_set_target(cxt, argv[0]); |
1048 | ||
aedeaa40 KZ |
1049 | } else if (argc == 2 && !mnt_context_get_source(cxt) |
1050 | && !mnt_context_get_target(cxt)) { | |
a9ae3955 KZ |
1051 | /* |
1052 | * D) mount <source> <target> | |
1053 | */ | |
97073441 KZ |
1054 | if (mnt_context_is_restricted(cxt)) |
1055 | exit_non_root(NULL); | |
1056 | mnt_context_set_source(cxt, argv[0]); | |
1057 | mnt_context_set_target(cxt, argv[1]); | |
aedeaa40 | 1058 | |
97073441 KZ |
1059 | } else |
1060 | usage(stderr); | |
1061 | ||
5ebbc386 KZ |
1062 | if (mnt_context_is_restricted(cxt)) |
1063 | sanitize_paths(cxt); | |
1064 | ||
be6904b9 KZ |
1065 | if (oper) |
1066 | /* BIND/MOVE operations, let's set the mount flags */ | |
68164f6c | 1067 | mnt_context_set_mflags(cxt, oper); |
97073441 | 1068 | |
be6904b9 KZ |
1069 | if (oper || propa) |
1070 | /* For --make-* or --bind is fstab unnecessary */ | |
374fd21a | 1071 | mnt_context_set_optsmode(cxt, MNT_OMODE_NOTAB); |
374fd21a | 1072 | |
cfb9db30 | 1073 | rc = mnt_context_mount(cxt); |
ce433404 KZ |
1074 | rc = mk_exit_code(cxt, rc); |
1075 | ||
84600ddc KZ |
1076 | if (rc == MOUNT_EX_SUCCESS && mnt_context_is_verbose(cxt)) |
1077 | success_message(cxt); | |
97073441 | 1078 | done: |
97073441 | 1079 | mnt_free_context(cxt); |
64b6bc4f | 1080 | mnt_free_table(fstab); |
97073441 KZ |
1081 | return rc; |
1082 | } | |
1083 |