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