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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" |
a5ebeca5 | 39 | #include "xalloc.h" |
efb8854f | 40 | #include "closestream.h" |
5ebbc386 | 41 | #include "canonicalize.h" |
97073441 | 42 | |
e3a7a5f8 | 43 | #define OPTUTILS_EXIT_CODE MNT_EX_USAGE |
38483b86 SK |
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 | ||
d946359a KZ |
53 | static int mk_exit_code(struct libmnt_context *cxt, int rc); |
54 | ||
97073441 KZ |
55 | static void __attribute__((__noreturn__)) exit_non_root(const char *option) |
56 | { | |
57 | const uid_t ruid = getuid(); | |
58 | const uid_t euid = geteuid(); | |
59 | ||
60 | if (ruid == 0 && euid != 0) { | |
61 | /* user is root, but setuid to non-root */ | |
62 | if (option) | |
e3a7a5f8 | 63 | errx(MNT_EX_USAGE, _("only root can use \"--%s\" option " |
97073441 KZ |
64 | "(effective UID is %u)"), |
65 | option, euid); | |
e3a7a5f8 | 66 | errx(MNT_EX_USAGE, _("only root can do that " |
97073441 KZ |
67 | "(effective UID is %u)"), euid); |
68 | } | |
69 | if (option) | |
e3a7a5f8 KZ |
70 | errx(MNT_EX_USAGE, _("only root can use \"--%s\" option"), option); |
71 | errx(MNT_EX_USAGE, _("only root can do that")); | |
97073441 KZ |
72 | } |
73 | ||
74 | static void __attribute__((__noreturn__)) print_version(void) | |
75 | { | |
76 | const char *ver = NULL; | |
ac8ecab4 | 77 | const char **features = NULL, **p; |
97073441 KZ |
78 | |
79 | mnt_get_library_version(&ver); | |
ac8ecab4 KZ |
80 | mnt_get_library_features(&features); |
81 | ||
82 | printf(_("%s from %s (libmount %s"), | |
83 | program_invocation_short_name, | |
84 | PACKAGE_STRING, | |
85 | ver); | |
86 | p = features; | |
87 | while (p && *p) { | |
88 | fputs(p == features ? ": " : ", ", stdout); | |
89 | fputs(*p++, stdout); | |
90 | } | |
91 | fputs(")\n", stdout); | |
e3a7a5f8 | 92 | exit(MNT_EX_SUCCESS); |
97073441 KZ |
93 | } |
94 | ||
7fc6d2b8 | 95 | static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)), |
9f7472b0 KZ |
96 | const char *filename, int line) |
97 | { | |
98 | if (filename) | |
b779c1ae | 99 | warnx(_("%s: parse error at line %d -- ignored"), filename, line); |
1cd9d0d7 | 100 | return 1; |
9f7472b0 KZ |
101 | } |
102 | ||
5f7c1890 KZ |
103 | /* |
104 | * Replace control chars with '?' to be compatible with coreutils. For more | |
105 | * robust solution use findmnt(1) where we use \x?? hex encoding. | |
106 | */ | |
107 | static void safe_fputs(const char *data) | |
108 | { | |
109 | const char *p; | |
110 | ||
111 | for (p = data; p && *p; p++) { | |
112 | if (iscntrl((unsigned char) *p)) | |
113 | fputc('?', stdout); | |
114 | else | |
115 | fputc(*p, stdout); | |
116 | } | |
117 | } | |
118 | ||
11754572 | 119 | static void print_all(struct libmnt_context *cxt, char *pattern, int show_label) |
97073441 | 120 | { |
68164f6c | 121 | struct libmnt_table *tb; |
a0c014dc | 122 | struct libmnt_iter *itr = NULL; |
68164f6c KZ |
123 | struct libmnt_fs *fs; |
124 | struct libmnt_cache *cache = NULL; | |
97073441 | 125 | |
11754572 | 126 | if (mnt_context_get_mtab(cxt, &tb)) |
e3a7a5f8 | 127 | err(MNT_EX_SYSERR, _("failed to read mtab")); |
97073441 KZ |
128 | |
129 | itr = mnt_new_iter(MNT_ITER_FORWARD); | |
11754572 | 130 | if (!itr) |
e3a7a5f8 | 131 | err(MNT_EX_SYSERR, _("failed to initialize libmount iterator")); |
97073441 KZ |
132 | if (show_label) |
133 | cache = mnt_new_cache(); | |
134 | ||
9f7472b0 | 135 | while (mnt_table_next_fs(tb, itr, &fs) == 0) { |
97073441 KZ |
136 | const char *type = mnt_fs_get_fstype(fs); |
137 | const char *src = mnt_fs_get_source(fs); | |
7cf389f7 | 138 | const char *optstr = mnt_fs_get_options(fs); |
aa397ce5 | 139 | char *xsrc = NULL; |
97073441 KZ |
140 | |
141 | if (type && pattern && !mnt_match_fstype(type, pattern)) | |
142 | continue; | |
143 | ||
aa397ce5 DR |
144 | if (!mnt_fs_is_pseudofs(fs)) |
145 | xsrc = mnt_pretty_path(src, cache); | |
5f7c1890 KZ |
146 | printf ("%s on ", xsrc ? xsrc : src); |
147 | safe_fputs(mnt_fs_get_target(fs)); | |
148 | ||
97073441 KZ |
149 | if (type) |
150 | printf (" type %s", type); | |
151 | if (optstr) | |
152 | printf (" (%s)", optstr); | |
153 | if (show_label && src) { | |
154 | char *lb = mnt_cache_find_tag_value(cache, src, "LABEL"); | |
155 | if (lb) | |
156 | printf (" [%s]", lb); | |
157 | } | |
158 | fputc('\n', stdout); | |
2576b4e7 | 159 | free(xsrc); |
97073441 | 160 | } |
11754572 | 161 | |
6195f9e6 | 162 | mnt_unref_cache(cache); |
b192b7b9 | 163 | mnt_free_iter(itr); |
97073441 KZ |
164 | } |
165 | ||
9f7472b0 KZ |
166 | /* |
167 | * mount -a [-F] | |
9f7472b0 | 168 | */ |
d2c97887 | 169 | static int mount_all(struct libmnt_context *cxt) |
a9ae3955 | 170 | { |
9f7472b0 KZ |
171 | struct libmnt_iter *itr; |
172 | struct libmnt_fs *fs; | |
e3a7a5f8 | 173 | int mntrc, ignored, rc = MNT_EX_SUCCESS; |
9f7472b0 | 174 | |
16b73aae KZ |
175 | int nsucc = 0, nerrs = 0; |
176 | ||
9f7472b0 KZ |
177 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
178 | if (!itr) { | |
179 | warn(_("failed to initialize libmount iterator")); | |
e3a7a5f8 | 180 | return MNT_EX_SYSERR; |
9f7472b0 KZ |
181 | } |
182 | ||
183 | while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) { | |
184 | ||
185 | const char *tgt = mnt_fs_get_target(fs); | |
186 | ||
187 | if (ignored) { | |
188 | if (mnt_context_is_verbose(cxt)) | |
b3f7a0ec KZ |
189 | printf(ignored == 1 ? _("%-25s: ignored\n") : |
190 | _("%-25s: already mounted\n"), | |
9f7472b0 | 191 | tgt); |
d2c97887 | 192 | } else if (mnt_context_is_fork(cxt)) { |
d946359a KZ |
193 | if (mnt_context_is_verbose(cxt)) |
194 | printf("%-25s: mount successfully forked\n", tgt); | |
9f7472b0 | 195 | } else { |
e3a7a5f8 | 196 | if (mk_exit_code(cxt, mntrc) == MNT_EX_SUCCESS) { |
16b73aae | 197 | nsucc++; |
d946359a | 198 | |
e3a7a5f8 | 199 | /* Note that MNT_EX_SUCCESS return code does |
8ab82185 KZ |
200 | * not mean that FS has been really mounted |
201 | * (e.g. nofail option) */ | |
202 | if (mnt_context_get_status(cxt) | |
203 | && mnt_context_is_verbose(cxt)) | |
d946359a | 204 | printf("%-25s: successfully mounted\n", tgt); |
16b73aae KZ |
205 | } else |
206 | nerrs++; | |
9f7472b0 KZ |
207 | } |
208 | } | |
209 | ||
d2c97887 KZ |
210 | if (mnt_context_is_parent(cxt)) { |
211 | /* wait for mount --fork children */ | |
16b73aae KZ |
212 | int nchildren = 0; |
213 | ||
214 | nerrs = 0, nsucc = 0; | |
d2c97887 KZ |
215 | |
216 | rc = mnt_context_wait_for_children(cxt, &nchildren, &nerrs); | |
217 | if (!rc && nchildren) | |
16b73aae | 218 | nsucc = nchildren - nerrs; |
d2c97887 KZ |
219 | } |
220 | ||
16b73aae | 221 | if (nerrs == 0) |
e3a7a5f8 | 222 | rc = MNT_EX_SUCCESS; /* all success */ |
16b73aae | 223 | else if (nsucc == 0) |
e3a7a5f8 | 224 | rc = MNT_EX_FAIL; /* all failed */ |
16b73aae | 225 | else |
e3a7a5f8 | 226 | rc = MNT_EX_SOMEOK; /* some success, some failed */ |
16b73aae | 227 | |
25609ee1 | 228 | mnt_free_iter(itr); |
9f7472b0 | 229 | return rc; |
a9ae3955 KZ |
230 | } |
231 | ||
84600ddc KZ |
232 | static void success_message(struct libmnt_context *cxt) |
233 | { | |
234 | unsigned long mflags = 0; | |
f5ae1d70 | 235 | const char *tgt, *src, *pr = program_invocation_short_name; |
84600ddc KZ |
236 | |
237 | if (mnt_context_helper_executed(cxt) | |
238 | || mnt_context_get_status(cxt) != 1) | |
239 | return; | |
240 | ||
241 | mnt_context_get_mflags(cxt, &mflags); | |
242 | tgt = mnt_context_get_target(cxt); | |
243 | src = mnt_context_get_source(cxt); | |
244 | ||
245 | if (mflags & MS_MOVE) | |
f5ae1d70 | 246 | printf(_("%s: %s moved to %s.\n"), pr, src, tgt); |
84600ddc | 247 | else if (mflags & MS_BIND) |
9b4257c8 | 248 | printf(_("%s: %s bound on %s.\n"), pr, src, tgt); |
b4ec4573 KZ |
249 | else if (mflags & MS_PROPAGATION) { |
250 | if (src && strcmp(src, "none") != 0 && tgt) | |
251 | printf(_("%s: %s mounted on %s.\n"), pr, src, tgt); | |
252 | ||
f5ae1d70 | 253 | printf(_("%s: %s propagation flags changed.\n"), pr, tgt); |
b4ec4573 | 254 | } else |
f5ae1d70 | 255 | printf(_("%s: %s mounted on %s.\n"), pr, src, tgt); |
84600ddc KZ |
256 | } |
257 | ||
4e45dfb9 KZ |
258 | #if defined(HAVE_LIBSELINUX) && defined(HAVE_SECURITY_GET_INITIAL_CONTEXT) |
259 | #include <selinux/selinux.h> | |
260 | #include <selinux/context.h> | |
261 | ||
262 | static void selinux_warning(struct libmnt_context *cxt, const char *tgt) | |
263 | { | |
264 | ||
265 | if (tgt && mnt_context_is_verbose(cxt) && is_selinux_enabled() > 0) { | |
266 | security_context_t raw = NULL, def = NULL; | |
267 | ||
268 | if (getfilecon(tgt, &raw) > 0 | |
269 | && security_get_initial_context("file", &def) == 0) { | |
270 | ||
271 | if (!selinux_file_context_cmp(raw, def)) | |
272 | printf(_( | |
273 | "mount: %s does not contain SELinux labels.\n" | |
274 | " You just mounted an file system that supports labels which does not\n" | |
275 | " contain labels, onto an SELinux box. It is likely that confined\n" | |
276 | " applications will generate AVC messages and not be allowed access to\n" | |
277 | " this file system. For more details see restorecon(8) and mount(8).\n"), | |
278 | tgt); | |
279 | } | |
280 | freecon(raw); | |
281 | freecon(def); | |
282 | } | |
283 | } | |
284 | #else | |
b8c0f4fb | 285 | # define selinux_warning(_x, _y) |
4e45dfb9 KZ |
286 | #endif |
287 | ||
fcc0413a | 288 | /* |
e1706a67 | 289 | * Returns exit status (MNT_EX_*) and/or prints error message. |
ce433404 KZ |
290 | */ |
291 | static int mk_exit_code(struct libmnt_context *cxt, int rc) | |
292 | { | |
e1706a67 KZ |
293 | const char *tgt; |
294 | char buf[BUFSIZ] = { 0 }; | |
6dede2f2 | 295 | |
e1706a67 KZ |
296 | rc = mnt_context_get_excode(cxt, rc, buf, sizeof(buf)); |
297 | tgt = mnt_context_get_target(cxt); | |
ce433404 | 298 | |
e1706a67 KZ |
299 | if (*buf) { |
300 | const char *spec = tgt; | |
301 | if (!spec) | |
302 | spec = mnt_context_get_source(cxt); | |
303 | if (!spec) | |
304 | spec = "???"; | |
305 | warnx(_("%s: %s."), spec, buf); | |
ce433404 | 306 | } |
ce433404 | 307 | |
0361cb6f KZ |
308 | if (rc == MNT_EX_SUCCESS && mnt_context_get_status(cxt) == 1) { |
309 | selinux_warning(cxt, tgt); | |
ce433404 | 310 | } |
e1706a67 | 311 | return rc; |
ce433404 KZ |
312 | } |
313 | ||
64b6bc4f KZ |
314 | static struct libmnt_table *append_fstab(struct libmnt_context *cxt, |
315 | struct libmnt_table *fstab, | |
316 | const char *path) | |
317 | { | |
318 | ||
319 | if (!fstab) { | |
320 | fstab = mnt_new_table(); | |
321 | if (!fstab) | |
e3a7a5f8 | 322 | err(MNT_EX_SYSERR, _("failed to initialize libmount table")); |
64b6bc4f KZ |
323 | |
324 | mnt_table_set_parser_errcb(fstab, table_parser_errcb); | |
325 | mnt_context_set_fstab(cxt, fstab); | |
50fccba1 KZ |
326 | |
327 | mnt_unref_table(fstab); /* reference is handled by @cxt now */ | |
64b6bc4f KZ |
328 | } |
329 | ||
330 | if (mnt_table_parse_fstab(fstab, path)) | |
e3a7a5f8 | 331 | errx(MNT_EX_USAGE,_("%s: failed to parse"), path); |
64b6bc4f KZ |
332 | |
333 | return fstab; | |
334 | } | |
335 | ||
5ebbc386 KZ |
336 | /* |
337 | * Check source and target paths -- non-root user should not be able to | |
338 | * resolve paths which are unreadable for him. | |
339 | */ | |
340 | static void sanitize_paths(struct libmnt_context *cxt) | |
341 | { | |
342 | const char *p; | |
343 | struct libmnt_fs *fs = mnt_context_get_fs(cxt); | |
344 | ||
345 | if (!fs) | |
346 | return; | |
347 | ||
348 | p = mnt_fs_get_target(fs); | |
349 | if (p) { | |
350 | char *np = canonicalize_path_restricted(p); | |
351 | if (!np) | |
e3a7a5f8 | 352 | err(MNT_EX_USAGE, "%s", p); |
5ebbc386 KZ |
353 | mnt_fs_set_target(fs, np); |
354 | free(np); | |
355 | } | |
356 | ||
357 | p = mnt_fs_get_srcpath(fs); | |
358 | if (p) { | |
359 | char *np = canonicalize_path_restricted(p); | |
360 | if (!np) | |
e3a7a5f8 | 361 | err(MNT_EX_USAGE, "%s", p); |
5ebbc386 KZ |
362 | mnt_fs_set_source(fs, np); |
363 | free(np); | |
364 | } | |
365 | } | |
366 | ||
be6904b9 KZ |
367 | static void append_option(struct libmnt_context *cxt, const char *opt) |
368 | { | |
8225bb78 | 369 | if (opt && (*opt == '=' || *opt == '\'' || *opt == '\"' || isblank(*opt))) |
e3a7a5f8 | 370 | errx(MNT_EX_USAGE, _("unsupported option format: %s"), opt); |
be6904b9 | 371 | if (mnt_context_append_options(cxt, opt)) |
e3a7a5f8 | 372 | err(MNT_EX_SYSERR, _("failed to append option '%s'"), opt); |
be6904b9 KZ |
373 | } |
374 | ||
ba986e81 KZ |
375 | static int has_remount_flag(struct libmnt_context *cxt) |
376 | { | |
377 | unsigned long mflags = 0; | |
378 | ||
379 | if (mnt_context_get_mflags(cxt, &mflags)) | |
380 | return 0; | |
381 | ||
382 | return mflags & MS_REMOUNT; | |
383 | } | |
384 | ||
97073441 KZ |
385 | static void __attribute__((__noreturn__)) usage(FILE *out) |
386 | { | |
e4c92d06 KZ |
387 | fputs(USAGE_HEADER, out); |
388 | fprintf(out, _( | |
97073441 KZ |
389 | " %1$s [-lhV]\n" |
390 | " %1$s -a [options]\n" | |
aedeaa40 | 391 | " %1$s [options] [--source] <source> | [--target] <directory>\n" |
97073441 KZ |
392 | " %1$s [options] <source> <directory>\n" |
393 | " %1$s <operation> <mountpoint> [<target>]\n"), | |
394 | program_invocation_short_name); | |
395 | ||
451dbcfa BS |
396 | fputs(USAGE_SEPARATOR, out); |
397 | fputs(_("Mount a filesystem.\n"), out); | |
398 | ||
e4c92d06 | 399 | fputs(USAGE_OPTIONS, out); |
97073441 | 400 | fprintf(out, _( |
97073441 | 401 | " -a, --all mount all filesystems mentioned in fstab\n" |
97073441 | 402 | " -c, --no-canonicalize don't canonicalize paths\n" |
eaca47f7 | 403 | " -f, --fake dry run; skip the mount(2) syscall\n" |
64b6bc4f KZ |
404 | " -F, --fork fork off for each device (use with -a)\n" |
405 | " -T, --fstab <path> alternative file to /etc/fstab\n")); | |
eaca47f7 | 406 | fprintf(out, _( |
89de71b3 BS |
407 | " -i, --internal-only don't call the mount.<type> helpers\n")); |
408 | fprintf(out, _( | |
409 | " -l, --show-labels show also filesystem labels\n")); | |
410 | fprintf(out, _( | |
eaca47f7 BS |
411 | " -n, --no-mtab don't write to /etc/mtab\n")); |
412 | fprintf(out, _( | |
413 | " -o, --options <list> comma-separated list of mount options\n" | |
414 | " -O, --test-opts <list> limit the set of filesystems (use with -a)\n" | |
415 | " -r, --read-only mount the filesystem read-only (same as -o ro)\n" | |
416 | " -t, --types <list> limit the set of filesystem types\n")); | |
417 | fprintf(out, _( | |
aedeaa40 KZ |
418 | " --source <src> explicitly specifies source (path, label, uuid)\n" |
419 | " --target <target> explicitly specifies mountpoint\n")); | |
420 | fprintf(out, _( | |
89de71b3 BS |
421 | " -v, --verbose say what is being done\n")); |
422 | fprintf(out, _( | |
6d402bbe | 423 | " -w, --rw, --read-write mount the filesystem read-write (default)\n")); |
97073441 | 424 | |
e4c92d06 KZ |
425 | fputs(USAGE_SEPARATOR, out); |
426 | fputs(USAGE_HELP, out); | |
427 | fputs(USAGE_VERSION, out); | |
428 | ||
eaca47f7 | 429 | fprintf(out, _( |
97073441 KZ |
430 | "\nSource:\n" |
431 | " -L, --label <label> synonym for LABEL=<label>\n" | |
432 | " -U, --uuid <uuid> synonym for UUID=<uuid>\n" | |
433 | " LABEL=<label> specifies device by filesystem label\n" | |
eb0eb262 KZ |
434 | " UUID=<uuid> specifies device by filesystem UUID\n" |
435 | " PARTLABEL=<label> specifies device by partition label\n" | |
436 | " PARTUUID=<uuid> specifies device by partition UUID\n")); | |
437 | ||
eaca47f7 | 438 | fprintf(out, _( |
97073441 KZ |
439 | " <device> specifies device by path\n" |
440 | " <directory> mountpoint for bind mounts (see --bind/rbind)\n" | |
eaca47f7 | 441 | " <file> regular file for loopdev setup\n")); |
97073441 | 442 | |
eaca47f7 | 443 | fprintf(out, _( |
97073441 KZ |
444 | "\nOperations:\n" |
445 | " -B, --bind mount a subtree somewhere else (same as -o bind)\n" | |
446 | " -M, --move move a subtree to some other place\n" | |
eaca47f7 BS |
447 | " -R, --rbind mount a subtree and all submounts somewhere else\n")); |
448 | fprintf(out, _( | |
97073441 KZ |
449 | " --make-shared mark a subtree as shared\n" |
450 | " --make-slave mark a subtree as slave\n" | |
451 | " --make-private mark a subtree as private\n" | |
eaca47f7 BS |
452 | " --make-unbindable mark a subtree as unbindable\n")); |
453 | fprintf(out, _( | |
97073441 KZ |
454 | " --make-rshared recursively mark a whole subtree as shared\n" |
455 | " --make-rslave recursively mark a whole subtree as slave\n" | |
456 | " --make-rprivate recursively mark a whole subtree as private\n" | |
eaca47f7 | 457 | " --make-runbindable recursively mark a whole subtree as unbindable\n")); |
97073441 | 458 | |
e4c92d06 | 459 | fprintf(out, USAGE_MAN_TAIL("mount(8)")); |
97073441 | 460 | |
e3a7a5f8 | 461 | exit(out == stderr ? MNT_EX_USAGE : MNT_EX_SUCCESS); |
97073441 KZ |
462 | } |
463 | ||
464 | int main(int argc, char **argv) | |
465 | { | |
e3a7a5f8 | 466 | int c, rc = MNT_EX_SUCCESS, all = 0, show_labels = 0; |
68164f6c | 467 | struct libmnt_context *cxt; |
64b6bc4f | 468 | struct libmnt_table *fstab = NULL; |
aedeaa40 | 469 | char *srcbuf = NULL; |
97073441 KZ |
470 | char *types = NULL; |
471 | unsigned long oper = 0; | |
be6904b9 | 472 | int propa = 0; |
97073441 | 473 | |
2492f713 KZ |
474 | enum { |
475 | MOUNT_OPT_SHARED = CHAR_MAX + 1, | |
476 | MOUNT_OPT_SLAVE, | |
477 | MOUNT_OPT_PRIVATE, | |
478 | MOUNT_OPT_UNBINDABLE, | |
479 | MOUNT_OPT_RSHARED, | |
480 | MOUNT_OPT_RSLAVE, | |
481 | MOUNT_OPT_RPRIVATE, | |
aedeaa40 KZ |
482 | MOUNT_OPT_RUNBINDABLE, |
483 | MOUNT_OPT_TARGET, | |
484 | MOUNT_OPT_SOURCE | |
2492f713 KZ |
485 | }; |
486 | ||
6c7d5ae9 | 487 | static const struct option longopts[] = { |
87918040 SK |
488 | { "all", no_argument, NULL, 'a' }, |
489 | { "fake", no_argument, NULL, 'f' }, | |
490 | { "fstab", required_argument, NULL, 'T' }, | |
491 | { "fork", no_argument, NULL, 'F' }, | |
492 | { "help", no_argument, NULL, 'h' }, | |
493 | { "no-mtab", no_argument, NULL, 'n' }, | |
494 | { "read-only", no_argument, NULL, 'r' }, | |
495 | { "ro", no_argument, NULL, 'r' }, | |
496 | { "verbose", no_argument, NULL, 'v' }, | |
497 | { "version", no_argument, NULL, 'V' }, | |
498 | { "read-write", no_argument, NULL, 'w' }, | |
499 | { "rw", no_argument, NULL, 'w' }, | |
500 | { "options", required_argument, NULL, 'o' }, | |
501 | { "test-opts", required_argument, NULL, 'O' }, | |
502 | { "types", required_argument, NULL, 't' }, | |
503 | { "uuid", required_argument, NULL, 'U' }, | |
504 | { "label", required_argument, NULL, 'L' }, | |
505 | { "bind", no_argument, NULL, 'B' }, | |
506 | { "move", no_argument, NULL, 'M' }, | |
507 | { "rbind", no_argument, NULL, 'R' }, | |
508 | { "make-shared", no_argument, NULL, MOUNT_OPT_SHARED }, | |
509 | { "make-slave", no_argument, NULL, MOUNT_OPT_SLAVE }, | |
510 | { "make-private", no_argument, NULL, MOUNT_OPT_PRIVATE }, | |
511 | { "make-unbindable", no_argument, NULL, MOUNT_OPT_UNBINDABLE }, | |
512 | { "make-rshared", no_argument, NULL, MOUNT_OPT_RSHARED }, | |
513 | { "make-rslave", no_argument, NULL, MOUNT_OPT_RSLAVE }, | |
514 | { "make-rprivate", no_argument, NULL, MOUNT_OPT_RPRIVATE }, | |
515 | { "make-runbindable", no_argument, NULL, MOUNT_OPT_RUNBINDABLE }, | |
516 | { "no-canonicalize", no_argument, NULL, 'c' }, | |
517 | { "internal-only", no_argument, NULL, 'i' }, | |
518 | { "show-labels", no_argument, NULL, 'l' }, | |
519 | { "target", required_argument, NULL, MOUNT_OPT_TARGET }, | |
520 | { "source", required_argument, NULL, MOUNT_OPT_SOURCE }, | |
521 | { NULL, 0, NULL, 0 } | |
97073441 KZ |
522 | }; |
523 | ||
a7349ee3 | 524 | static const ul_excl_t excl[] = { /* rows and cols in ASCII order */ |
be6904b9 | 525 | { 'B','M','R' }, /* bind,move,rbind */ |
51a37c19 KZ |
526 | { 'L','U', MOUNT_OPT_SOURCE }, /* label,uuid,source */ |
527 | { 0 } | |
528 | }; | |
529 | int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; | |
530 | ||
6189ace3 | 531 | sanitize_env(); |
97073441 KZ |
532 | setlocale(LC_ALL, ""); |
533 | bindtextdomain(PACKAGE, LOCALEDIR); | |
534 | textdomain(PACKAGE); | |
efb8854f | 535 | atexit(close_stdout); |
97073441 KZ |
536 | |
537 | mnt_init_debug(0); | |
538 | cxt = mnt_new_context(); | |
539 | if (!cxt) | |
e3a7a5f8 | 540 | err(MNT_EX_SYSERR, _("libmount context allocation failed")); |
97073441 | 541 | |
9f7472b0 KZ |
542 | mnt_context_set_tables_errcb(cxt, table_parser_errcb); |
543 | ||
961d69f7 | 544 | while ((c = getopt_long(argc, argv, "aBcfFhilL:Mno:O:rRsU:vVwt:T:", |
97073441 KZ |
545 | longopts, NULL)) != -1) { |
546 | ||
547 | /* only few options are allowed for non-root users */ | |
aedeaa40 | 548 | if (mnt_context_is_restricted(cxt) && |
961d69f7 | 549 | !strchr("hlLUVvrist", c) && |
aedeaa40 KZ |
550 | c != MOUNT_OPT_TARGET && |
551 | c != MOUNT_OPT_SOURCE) | |
732a6311 | 552 | exit_non_root(option_to_longopt(c, longopts)); |
97073441 | 553 | |
51a37c19 KZ |
554 | err_exclusive_options(c, longopts, excl, excl_st); |
555 | ||
97073441 KZ |
556 | switch(c) { |
557 | case 'a': | |
558 | all = 1; | |
97073441 KZ |
559 | break; |
560 | case 'c': | |
561 | mnt_context_disable_canonicalize(cxt, TRUE); | |
562 | break; | |
563 | case 'f': | |
564 | mnt_context_enable_fake(cxt, TRUE); | |
565 | break; | |
566 | case 'F': | |
d2c97887 | 567 | mnt_context_enable_fork(cxt, TRUE); |
97073441 KZ |
568 | break; |
569 | case 'h': | |
570 | usage(stdout); | |
571 | break; | |
572 | case 'i': | |
573 | mnt_context_disable_helpers(cxt, TRUE); | |
574 | break; | |
575 | case 'n': | |
576 | mnt_context_disable_mtab(cxt, TRUE); | |
577 | break; | |
578 | case 'r': | |
be6904b9 | 579 | append_option(cxt, "ro"); |
6dede2f2 | 580 | mnt_context_enable_rwonly_mount(cxt, FALSE); |
97073441 KZ |
581 | break; |
582 | case 'v': | |
583 | mnt_context_enable_verbose(cxt, TRUE); | |
584 | break; | |
585 | case 'V': | |
586 | print_version(); | |
587 | break; | |
588 | case 'w': | |
be6904b9 | 589 | append_option(cxt, "rw"); |
6dede2f2 | 590 | mnt_context_enable_rwonly_mount(cxt, TRUE); |
97073441 KZ |
591 | break; |
592 | case 'o': | |
be6904b9 | 593 | append_option(cxt, optarg); |
97073441 KZ |
594 | break; |
595 | case 'O': | |
596 | if (mnt_context_set_options_pattern(cxt, optarg)) | |
e3a7a5f8 | 597 | err(MNT_EX_SYSERR, _("failed to set options pattern")); |
97073441 KZ |
598 | break; |
599 | case 'L': | |
aedeaa40 KZ |
600 | xasprintf(&srcbuf, "LABEL=\"%s\"", optarg); |
601 | mnt_context_disable_swapmatch(cxt, 1); | |
602 | mnt_context_set_source(cxt, srcbuf); | |
603 | free(srcbuf); | |
604 | break; | |
97073441 | 605 | case 'U': |
aedeaa40 KZ |
606 | xasprintf(&srcbuf, "UUID=\"%s\"", optarg); |
607 | mnt_context_disable_swapmatch(cxt, 1); | |
608 | mnt_context_set_source(cxt, srcbuf); | |
609 | free(srcbuf); | |
97073441 KZ |
610 | break; |
611 | case 'l': | |
612 | show_labels = 1; | |
613 | break; | |
614 | case 't': | |
615 | types = optarg; | |
616 | break; | |
64b6bc4f KZ |
617 | case 'T': |
618 | fstab = append_fstab(cxt, fstab, optarg); | |
619 | break; | |
97073441 KZ |
620 | case 's': |
621 | mnt_context_enable_sloppy(cxt, TRUE); | |
622 | break; | |
623 | case 'B': | |
d7890778 | 624 | oper |= MS_BIND; |
97073441 KZ |
625 | break; |
626 | case 'M': | |
d7890778 | 627 | oper |= MS_MOVE; |
97073441 KZ |
628 | break; |
629 | case 'R': | |
d7890778 | 630 | oper |= (MS_BIND | MS_REC); |
97073441 | 631 | break; |
2492f713 | 632 | case MOUNT_OPT_SHARED: |
be6904b9 KZ |
633 | append_option(cxt, "shared"); |
634 | propa = 1; | |
97073441 | 635 | break; |
2492f713 | 636 | case MOUNT_OPT_SLAVE: |
be6904b9 KZ |
637 | append_option(cxt, "slave"); |
638 | propa = 1; | |
97073441 | 639 | break; |
2492f713 | 640 | case MOUNT_OPT_PRIVATE: |
be6904b9 KZ |
641 | append_option(cxt, "private"); |
642 | propa = 1; | |
97073441 | 643 | break; |
2492f713 | 644 | case MOUNT_OPT_UNBINDABLE: |
be6904b9 KZ |
645 | append_option(cxt, "unbindable"); |
646 | propa = 1; | |
97073441 | 647 | break; |
2492f713 | 648 | case MOUNT_OPT_RSHARED: |
be6904b9 KZ |
649 | append_option(cxt, "rshared"); |
650 | propa = 1; | |
97073441 | 651 | break; |
2492f713 | 652 | case MOUNT_OPT_RSLAVE: |
be6904b9 KZ |
653 | append_option(cxt, "rslave"); |
654 | propa = 1; | |
97073441 | 655 | break; |
2492f713 | 656 | case MOUNT_OPT_RPRIVATE: |
be6904b9 KZ |
657 | append_option(cxt, "rprivate"); |
658 | propa = 1; | |
97073441 | 659 | break; |
2492f713 | 660 | case MOUNT_OPT_RUNBINDABLE: |
be6904b9 KZ |
661 | append_option(cxt, "runbindable"); |
662 | propa = 1; | |
97073441 | 663 | break; |
aedeaa40 KZ |
664 | case MOUNT_OPT_TARGET: |
665 | mnt_context_disable_swapmatch(cxt, 1); | |
666 | mnt_context_set_target(cxt, optarg); | |
667 | break; | |
668 | case MOUNT_OPT_SOURCE: | |
aedeaa40 KZ |
669 | mnt_context_disable_swapmatch(cxt, 1); |
670 | mnt_context_set_source(cxt, optarg); | |
671 | break; | |
97073441 | 672 | default: |
e3a7a5f8 | 673 | errtryhelp(MNT_EX_USAGE); |
97073441 KZ |
674 | } |
675 | } | |
676 | ||
677 | argc -= optind; | |
678 | argv += optind; | |
679 | ||
59414c6b KZ |
680 | if (fstab && !mnt_context_is_nocanonicalize(cxt)) { |
681 | /* | |
682 | * We have external (context independent) fstab instance, let's | |
683 | * make a connection between the fstab and the canonicalization | |
684 | * cache. | |
685 | */ | |
6195f9e6 | 686 | mnt_table_set_cache(fstab, mnt_context_get_cache(cxt)); |
59414c6b KZ |
687 | } |
688 | ||
aedeaa40 KZ |
689 | if (!mnt_context_get_source(cxt) && |
690 | !mnt_context_get_target(cxt) && | |
691 | !argc && | |
692 | !all) { | |
be6904b9 | 693 | if (oper || mnt_context_get_options(cxt)) |
97073441 | 694 | usage(stderr); |
11754572 | 695 | print_all(cxt, types, show_labels); |
97073441 KZ |
696 | goto done; |
697 | } | |
698 | ||
1707b9b1 RT |
699 | /* Non-root users are allowed to use -t to print_all(), |
700 | but not to mount */ | |
701 | if (mnt_context_is_restricted(cxt) && types) | |
702 | exit_non_root("types"); | |
703 | ||
aedeaa40 | 704 | if (oper && (types || all || mnt_context_get_source(cxt))) |
97073441 KZ |
705 | usage(stderr); |
706 | ||
9f7472b0 KZ |
707 | if (types && (all || strchr(types, ',') || |
708 | strncmp(types, "no", 2) == 0)) | |
97073441 KZ |
709 | mnt_context_set_fstype_pattern(cxt, types); |
710 | else if (types) | |
711 | mnt_context_set_fstype(cxt, types); | |
712 | ||
a9ae3955 KZ |
713 | if (all) { |
714 | /* | |
715 | * A) Mount all | |
716 | */ | |
d2c97887 | 717 | rc = mount_all(cxt); |
11754572 | 718 | goto done; |
a9ae3955 | 719 | |
aedeaa40 KZ |
720 | } else if (argc == 0 && (mnt_context_get_source(cxt) || |
721 | mnt_context_get_target(cxt))) { | |
a9ae3955 | 722 | /* |
aedeaa40 | 723 | * B) mount -L|-U|--source|--target |
6751f062 KZ |
724 | * |
725 | * non-root may specify source *or* target, but not both | |
a9ae3955 | 726 | */ |
aedeaa40 KZ |
727 | if (mnt_context_is_restricted(cxt) && |
728 | mnt_context_get_source(cxt) && | |
729 | mnt_context_get_target(cxt)) | |
730 | exit_non_root(NULL); | |
97073441 | 731 | |
6751f062 KZ |
732 | } else if (argc == 1 && (!mnt_context_get_source(cxt) || |
733 | !mnt_context_get_target(cxt))) { | |
a9ae3955 | 734 | /* |
aedeaa40 | 735 | * C) mount [-L|-U|--source] <target> |
6751f062 | 736 | * mount [--target <dir>] <source> |
a9ae3955 | 737 | * mount <source|target> |
aedeaa40 KZ |
738 | * |
739 | * non-root may specify source *or* target, but not both | |
6751f062 KZ |
740 | * |
741 | * It does not matter for libmount if we set source or target | |
742 | * here (the library is able to swap it), but it matters for | |
743 | * sanitize_paths(). | |
a9ae3955 | 744 | */ |
6751f062 KZ |
745 | int istag = mnt_tag_is_valid(argv[0]); |
746 | ||
747 | if (istag && mnt_context_get_source(cxt)) | |
748 | /* -L, -U or --source together with LABEL= or UUID= */ | |
e3a7a5f8 | 749 | errx(MNT_EX_USAGE, _("source specified more than once")); |
6751f062 KZ |
750 | else if (istag || mnt_context_get_target(cxt)) |
751 | mnt_context_set_source(cxt, argv[0]); | |
752 | else | |
753 | mnt_context_set_target(cxt, argv[0]); | |
754 | ||
aedeaa40 | 755 | if (mnt_context_is_restricted(cxt) && |
6751f062 KZ |
756 | mnt_context_get_source(cxt) && |
757 | mnt_context_get_target(cxt)) | |
aedeaa40 KZ |
758 | exit_non_root(NULL); |
759 | ||
aedeaa40 KZ |
760 | } else if (argc == 2 && !mnt_context_get_source(cxt) |
761 | && !mnt_context_get_target(cxt)) { | |
a9ae3955 KZ |
762 | /* |
763 | * D) mount <source> <target> | |
764 | */ | |
97073441 KZ |
765 | if (mnt_context_is_restricted(cxt)) |
766 | exit_non_root(NULL); | |
6751f062 | 767 | |
97073441 KZ |
768 | mnt_context_set_source(cxt, argv[0]); |
769 | mnt_context_set_target(cxt, argv[1]); | |
aedeaa40 | 770 | |
97073441 KZ |
771 | } else |
772 | usage(stderr); | |
773 | ||
5ebbc386 KZ |
774 | if (mnt_context_is_restricted(cxt)) |
775 | sanitize_paths(cxt); | |
776 | ||
be6904b9 KZ |
777 | if (oper) |
778 | /* BIND/MOVE operations, let's set the mount flags */ | |
68164f6c | 779 | mnt_context_set_mflags(cxt, oper); |
97073441 | 780 | |
ba986e81 KZ |
781 | if ((oper && !has_remount_flag(cxt)) || propa) |
782 | /* For --make-* or --bind is fstab/mtab unnecessary */ | |
374fd21a | 783 | mnt_context_set_optsmode(cxt, MNT_OMODE_NOTAB); |
374fd21a | 784 | |
cfb9db30 | 785 | rc = mnt_context_mount(cxt); |
ce433404 KZ |
786 | rc = mk_exit_code(cxt, rc); |
787 | ||
e3a7a5f8 | 788 | if (rc == MNT_EX_SUCCESS && mnt_context_is_verbose(cxt)) |
84600ddc | 789 | success_message(cxt); |
97073441 | 790 | done: |
97073441 KZ |
791 | mnt_free_context(cxt); |
792 | return rc; | |
793 | } | |
794 |