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Commit | Line | Data |
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04fd7a9f KZ |
1 | /* |
2 | * findmnt(8) | |
3 | * | |
68164f6c | 4 | * Copyright (C) 2010,2011 Red Hat, Inc. All rights reserved. |
04fd7a9f KZ |
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 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software Foundation, | |
19 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
04fd7a9f KZ |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <errno.h> | |
04fd7a9f KZ |
24 | #include <unistd.h> |
25 | #include <getopt.h> | |
26 | #include <string.h> | |
9d67679b | 27 | #include <termios.h> |
9d67679b KZ |
28 | #ifdef HAVE_SYS_IOCTL_H |
29 | #include <sys/ioctl.h> | |
30 | #endif | |
9d67679b | 31 | #include <assert.h> |
32e5466a | 32 | #include <poll.h> |
9d67679b | 33 | |
2a1f429a | 34 | #include <libmount.h> |
fdedb45e | 35 | |
04fd7a9f KZ |
36 | #include "pathnames.h" |
37 | #include "nls.h" | |
9d67679b | 38 | #include "c.h" |
fdedb45e | 39 | #include "tt.h" |
ad38fb9f | 40 | #include "strutils.h" |
04fd7a9f | 41 | |
9d67679b KZ |
42 | /* flags */ |
43 | enum { | |
44 | FL_EVALUATE = (1 << 1), | |
45 | FL_CANONICALIZE = (1 << 2), | |
46 | FL_FIRSTONLY = (1 << 3), | |
47 | FL_INVERT = (1 << 4), | |
9d67679b | 48 | FL_NOSWAPMATCH = (1 << 6), |
b2214e1f | 49 | FL_NOFSROOT = (1 << 7), |
049caefd | 50 | FL_SUBMOUNTS = (1 << 8), |
32e5466a | 51 | FL_POLL = (1 << 9) |
9d67679b KZ |
52 | }; |
53 | ||
54 | /* column IDs */ | |
04fd7a9f KZ |
55 | enum { |
56 | COL_SOURCE, | |
57 | COL_TARGET, | |
58 | COL_FSTYPE, | |
59 | COL_OPTIONS, | |
631280e0 KZ |
60 | COL_VFS_OPTIONS, |
61 | COL_FS_OPTIONS, | |
04fd7a9f KZ |
62 | COL_LABEL, |
63 | COL_UUID, | |
46236388 | 64 | COL_MAJMIN, |
32e5466a KZ |
65 | COL_ACTION, |
66 | COL_OLD_TARGET, | |
67 | COL_OLD_OPTIONS, | |
04fd7a9f | 68 | |
af0dc7d3 | 69 | FINDMNT_NCOLUMNS |
04fd7a9f KZ |
70 | }; |
71 | ||
8c5eba3e KZ |
72 | enum { |
73 | TABTYPE_FSTAB = 1, | |
74 | TABTYPE_MTAB, | |
75 | TABTYPE_KERNEL | |
76 | }; | |
77 | ||
9d67679b KZ |
78 | /* column names */ |
79 | struct colinfo { | |
80 | const char *name; /* header */ | |
81 | double whint; /* width hint (N < 1 is in percent of termwidth) */ | |
32e5466a | 82 | int flags; /* tt flags */ |
b152e359 | 83 | const char *help; /* column description */ |
9d67679b | 84 | const char *match; /* pattern for match_func() */ |
04fd7a9f KZ |
85 | }; |
86 | ||
af0dc7d3 KZ |
87 | /* columns descriptions (don't use const, this is writable) */ |
88 | static struct colinfo infos[FINDMNT_NCOLUMNS] = { | |
7aa69cf2 KZ |
89 | [COL_SOURCE] = { "SOURCE", 0.25, TT_FL_NOEXTREMES, N_("source device") }, |
90 | [COL_TARGET] = { "TARGET", 0.30, TT_FL_TREE | TT_FL_NOEXTREMES, N_("mountpoint") }, | |
b152e359 KZ |
91 | [COL_FSTYPE] = { "FSTYPE", 0.10, TT_FL_TRUNC, N_("filesystem type") }, |
92 | [COL_OPTIONS] = { "OPTIONS", 0.10, TT_FL_TRUNC, N_("all mount options") }, | |
93 | [COL_VFS_OPTIONS] = { "VFS-OPTIONS", 0.20, TT_FL_TRUNC, N_("VFS specific mount options") }, | |
94 | [COL_FS_OPTIONS] = { "FS-OPTIONS", 0.10, TT_FL_TRUNC, N_("FS specific mount options") }, | |
95 | [COL_LABEL] = { "LABEL", 0.10, 0, N_("filesystem label") }, | |
96 | [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") }, | |
97 | [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number") }, | |
98 | [COL_ACTION] = { "ACTION", 10, TT_FL_STRICTWIDTH, N_("action detected by --poll") }, | |
99 | [COL_OLD_OPTIONS] = { "OLD-OPTIONS", 0.10, TT_FL_TRUNC, N_("old mount options saved by --poll") }, | |
100 | [COL_OLD_TARGET] = { "OLD-TARGET", 0.30, 0, N_("old mountpoint saved by --poll") }, | |
04fd7a9f KZ |
101 | }; |
102 | ||
9d67679b | 103 | /* global flags */ |
af0dc7d3 KZ |
104 | static int flags; |
105 | static int tt_flags; | |
9d67679b | 106 | |
fdedb45e | 107 | /* array with IDs of enabled columns */ |
af0dc7d3 KZ |
108 | static int columns[FINDMNT_NCOLUMNS]; |
109 | static int ncolumns; | |
9d67679b | 110 | |
582a5006 | 111 | /* poll actions (parsed --poll=<list> */ |
af0dc7d3 KZ |
112 | #define FINDMNT_NACTIONS 4 /* mount, umount, move, remount */ |
113 | static int actions[FINDMNT_NACTIONS]; | |
114 | static int nactions; | |
582a5006 | 115 | |
9d67679b | 116 | /* libmount cache */ |
af0dc7d3 | 117 | static struct libmnt_cache *cache; |
04fd7a9f | 118 | |
00b4bcdf | 119 | static int get_column_id(int num) |
9d67679b | 120 | { |
9d67679b | 121 | assert(num < ncolumns); |
af0dc7d3 | 122 | assert(columns[num] < FINDMNT_NCOLUMNS); |
fdedb45e | 123 | return columns[num]; |
9d67679b KZ |
124 | } |
125 | ||
00b4bcdf | 126 | static struct colinfo *get_column_info(int num) |
9d67679b KZ |
127 | { |
128 | return &infos[ get_column_id(num) ]; | |
129 | } | |
130 | ||
00b4bcdf | 131 | static const char *column_id_to_name(int id) |
9d67679b | 132 | { |
af0dc7d3 | 133 | assert(id < FINDMNT_NCOLUMNS); |
9d67679b KZ |
134 | return infos[id].name; |
135 | } | |
136 | ||
00b4bcdf | 137 | static const char *get_column_name(int num) |
9d67679b | 138 | { |
fdedb45e | 139 | return get_column_info(num)->name; |
9d67679b KZ |
140 | } |
141 | ||
00b4bcdf | 142 | static float get_column_whint(int num) |
9d67679b | 143 | { |
fdedb45e | 144 | return get_column_info(num)->whint; |
9d67679b KZ |
145 | } |
146 | ||
32e5466a | 147 | static int get_column_flags(int num) |
9d67679b | 148 | { |
32e5466a | 149 | return get_column_info(num)->flags; |
9d67679b KZ |
150 | } |
151 | ||
00b4bcdf | 152 | static const char *get_match(int id) |
9d67679b | 153 | { |
af0dc7d3 | 154 | assert(id < FINDMNT_NCOLUMNS); |
9d67679b KZ |
155 | return infos[id].match; |
156 | } | |
157 | ||
00b4bcdf | 158 | static void set_match(int id, const char *match) |
9d67679b | 159 | { |
af0dc7d3 | 160 | assert(id < FINDMNT_NCOLUMNS); |
9d67679b KZ |
161 | infos[id].match = match; |
162 | } | |
163 | ||
32e5466a KZ |
164 | static int is_tabdiff_column(int id) |
165 | { | |
af0dc7d3 | 166 | assert(id < FINDMNT_NCOLUMNS); |
32e5466a KZ |
167 | |
168 | switch(id) { | |
169 | case COL_ACTION: | |
170 | case COL_OLD_TARGET: | |
171 | case COL_OLD_OPTIONS: | |
172 | return 1; | |
173 | default: | |
174 | break; | |
175 | } | |
176 | return 0; | |
177 | } | |
178 | ||
9d67679b KZ |
179 | /* |
180 | * "findmnt" without any filter | |
181 | */ | |
00b4bcdf | 182 | static int is_listall_mode(void) |
9d67679b KZ |
183 | { |
184 | return (!get_match(COL_SOURCE) && | |
185 | !get_match(COL_TARGET) && | |
186 | !get_match(COL_FSTYPE) && | |
187 | !get_match(COL_OPTIONS)); | |
188 | } | |
189 | ||
582a5006 KZ |
190 | /* |
191 | * Returns 1 if the @act is in the --poll=<list> | |
192 | */ | |
193 | static int has_poll_action(int act) | |
194 | { | |
195 | int i; | |
196 | ||
197 | if (!nactions) | |
198 | return 1; /* all actions enabled */ | |
199 | for (i = 0; i < nactions; i++) | |
200 | if (actions[i] == act) | |
201 | return 1; | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static int poll_action_name_to_id(const char *name, size_t namesz) | |
206 | { | |
207 | int id = -1; | |
208 | ||
209 | if (strncasecmp(name, "move", namesz) == 0 && namesz == 4) | |
210 | id = MNT_TABDIFF_MOVE; | |
211 | else if (strncasecmp(name, "mount", namesz) == 0 && namesz == 5) | |
212 | id = MNT_TABDIFF_MOUNT; | |
213 | else if (strncasecmp(name, "umount", namesz) == 0 && namesz == 6) | |
214 | id = MNT_TABDIFF_UMOUNT; | |
215 | else if (strncasecmp(name, "remount", namesz) == 0 && namesz == 7) | |
216 | id = MNT_TABDIFF_REMOUNT; | |
217 | else | |
218 | warnx(_("unknown action: %s"), name); | |
219 | ||
220 | return id; | |
221 | } | |
222 | ||
9d67679b KZ |
223 | /* |
224 | * findmnt --first-only <devname|TAG=|mountpoint> | |
225 | * | |
226 | * ... it works like "mount <devname|TAG=|mountpoint>" | |
227 | */ | |
00b4bcdf | 228 | static int is_mount_compatible_mode(void) |
9d67679b KZ |
229 | { |
230 | if (!get_match(COL_SOURCE)) | |
231 | return 0; /* <devname|TAG=|mountpoint> is required */ | |
232 | if (get_match(COL_FSTYPE) || get_match(COL_OPTIONS)) | |
233 | return 0; /* cannot be restricted by -t or -O */ | |
234 | if (!(flags & FL_FIRSTONLY)) | |
235 | return 0; /* we have to return the first entry only */ | |
236 | ||
237 | return 1; /* ok */ | |
238 | } | |
239 | ||
32e5466a | 240 | static void disable_columns_truncate(void) |
9d67679b KZ |
241 | { |
242 | int i; | |
243 | ||
af0dc7d3 | 244 | for (i = 0; i < FINDMNT_NCOLUMNS; i++) |
32e5466a | 245 | infos[i].flags &= ~TT_FL_TRUNC; |
9d67679b KZ |
246 | } |
247 | ||
04fd7a9f KZ |
248 | /* |
249 | * converts @name to column ID | |
250 | */ | |
9d67679b | 251 | static int column_name_to_id(const char *name, size_t namesz) |
04fd7a9f KZ |
252 | { |
253 | int i; | |
254 | ||
af0dc7d3 | 255 | for (i = 0; i < FINDMNT_NCOLUMNS; i++) { |
9d67679b | 256 | const char *cn = column_id_to_name(i); |
04fd7a9f | 257 | |
9d67679b | 258 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) |
04fd7a9f KZ |
259 | return i; |
260 | } | |
fdedb45e | 261 | warnx(_("unknown column: %s"), name); |
04fd7a9f KZ |
262 | return -1; |
263 | } | |
264 | ||
fdedb45e | 265 | /* Returns LABEL or UUID */ |
68164f6c | 266 | static const char *get_tag(struct libmnt_fs *fs, const char *tagname) |
9d67679b KZ |
267 | { |
268 | const char *t, *v, *res; | |
269 | ||
270 | if (!mnt_fs_get_tag(fs, &t, &v) && !strcmp(t, tagname)) | |
271 | res = v; | |
272 | else { | |
273 | res = mnt_fs_get_source(fs); | |
274 | if (res) | |
275 | res = mnt_resolve_spec(res, cache); | |
276 | if (res) | |
277 | res = mnt_cache_find_tag_value(cache, res, tagname); | |
278 | } | |
279 | ||
280 | return res; | |
281 | } | |
282 | ||
46236388 KZ |
283 | /* reads FS data from libmount |
284 | * TODO: add function that will deallocate data allocated by get_data() | |
285 | */ | |
68164f6c | 286 | static const char *get_data(struct libmnt_fs *fs, int num) |
9d67679b KZ |
287 | { |
288 | const char *str = NULL; | |
289 | ||
290 | switch(get_column_id(num)) { | |
04fd7a9f | 291 | case COL_SOURCE: |
b2214e1f KZ |
292 | { |
293 | const char *root = mnt_fs_get_root(fs); | |
294 | ||
9d67679b | 295 | str = mnt_fs_get_srcpath(fs); |
04fd7a9f | 296 | |
9d67679b KZ |
297 | if (str && (flags & FL_CANONICALIZE)) |
298 | str = mnt_resolve_path(str, cache); | |
299 | if (!str) { | |
300 | str = mnt_fs_get_source(fs); | |
301 | ||
302 | if (str && (flags & FL_EVALUATE)) | |
303 | str = mnt_resolve_spec(str, cache); | |
304 | } | |
b2214e1f KZ |
305 | if (root && str && !(flags & FL_NOFSROOT) && strcmp(root, "/")) { |
306 | char *tmp; | |
307 | ||
308 | if (asprintf(&tmp, "%s[%s]", str, root) > 0) | |
309 | str = tmp; | |
310 | } | |
04fd7a9f | 311 | break; |
b2214e1f | 312 | } |
04fd7a9f | 313 | case COL_TARGET: |
fdedb45e | 314 | str = mnt_fs_get_target(fs); |
04fd7a9f KZ |
315 | break; |
316 | case COL_FSTYPE: | |
317 | str = mnt_fs_get_fstype(fs); | |
318 | break; | |
319 | case COL_OPTIONS: | |
d783ee0b | 320 | str = mnt_fs_get_options(fs); |
04fd7a9f | 321 | break; |
631280e0 | 322 | case COL_VFS_OPTIONS: |
411fe06e | 323 | str = mnt_fs_get_vfs_options(fs); |
631280e0 KZ |
324 | break; |
325 | case COL_FS_OPTIONS: | |
411fe06e | 326 | str = mnt_fs_get_fs_options(fs); |
631280e0 | 327 | break; |
9d67679b KZ |
328 | case COL_UUID: |
329 | str = get_tag(fs, "UUID"); | |
330 | break; | |
331 | case COL_LABEL: | |
332 | str = get_tag(fs, "LABEL"); | |
333 | break; | |
46236388 KZ |
334 | case COL_MAJMIN: |
335 | { | |
336 | dev_t devno = mnt_fs_get_devno(fs); | |
337 | if (devno) { | |
338 | char *tmp; | |
339 | int rc = 0; | |
49e9fd3a | 340 | if ((tt_flags & TT_FL_RAW) || (tt_flags & TT_FL_EXPORT)) |
68164f6c KZ |
341 | rc = asprintf(&tmp, "%u:%u", |
342 | major(devno), minor(devno)); | |
46236388 | 343 | else |
68164f6c KZ |
344 | rc = asprintf(&tmp, "%3u:%-3u", |
345 | major(devno), minor(devno)); | |
46236388 KZ |
346 | if (rc) |
347 | str = tmp; | |
348 | } | |
349 | } | |
04fd7a9f | 350 | default: |
9d67679b | 351 | break; |
04fd7a9f | 352 | } |
fdedb45e | 353 | return str; |
9d67679b KZ |
354 | } |
355 | ||
32e5466a KZ |
356 | static const char *get_tabdiff_data(struct libmnt_fs *old_fs, |
357 | struct libmnt_fs *new_fs, | |
358 | int change, | |
359 | int num) | |
360 | { | |
361 | const char *str = NULL; | |
362 | ||
363 | switch (get_column_id(num)) { | |
364 | case COL_ACTION: | |
365 | switch (change) { | |
366 | case MNT_TABDIFF_MOUNT: | |
367 | str = _("mount"); | |
368 | break; | |
369 | case MNT_TABDIFF_UMOUNT: | |
370 | str = _("umount"); | |
371 | break; | |
372 | case MNT_TABDIFF_REMOUNT: | |
373 | str = _("remount"); | |
374 | break; | |
375 | case MNT_TABDIFF_MOVE: | |
376 | str = _("move"); | |
377 | break; | |
378 | default: | |
379 | str = _("unknown"); | |
380 | break; | |
381 | } | |
382 | break; | |
383 | case COL_OLD_OPTIONS: | |
77a1c5f7 KZ |
384 | if (old_fs && (change == MNT_TABDIFF_REMOUNT || |
385 | change == MNT_TABDIFF_UMOUNT)) | |
32e5466a KZ |
386 | str = mnt_fs_get_options(old_fs); |
387 | break; | |
388 | case COL_OLD_TARGET: | |
77a1c5f7 KZ |
389 | if (old_fs && (change == MNT_TABDIFF_MOVE || |
390 | change == MNT_TABDIFF_UMOUNT)) | |
32e5466a KZ |
391 | str = mnt_fs_get_target(old_fs); |
392 | break; | |
393 | default: | |
394 | if (new_fs) | |
395 | str = get_data(new_fs, num); | |
396 | else | |
397 | str = get_data(old_fs, num); | |
398 | break; | |
399 | } | |
400 | return str; | |
401 | } | |
402 | ||
fdedb45e | 403 | /* adds one line to the output @tab */ |
68164f6c | 404 | static struct tt_line *add_line(struct tt *tt, struct libmnt_fs *fs, |
fdedb45e | 405 | struct tt_line *parent) |
9d67679b | 406 | { |
fdedb45e KZ |
407 | int i; |
408 | struct tt_line *line = tt_add_line(tt, parent); | |
9d67679b | 409 | |
fdedb45e KZ |
410 | if (!line) { |
411 | warn(_("failed to add line to output")); | |
412 | return NULL; | |
9d67679b | 413 | } |
fdedb45e KZ |
414 | for (i = 0; i < ncolumns; i++) |
415 | tt_line_set_data(line, i, get_data(fs, i)); | |
9d67679b | 416 | |
049caefd | 417 | tt_line_set_userdata(line, fs); |
fdedb45e | 418 | return line; |
9d67679b KZ |
419 | } |
420 | ||
32e5466a KZ |
421 | static struct tt_line *add_tabdiff_line(struct tt *tt, struct libmnt_fs *new_fs, |
422 | struct libmnt_fs *old_fs, int change) | |
423 | { | |
424 | int i; | |
425 | struct tt_line *line = tt_add_line(tt, NULL); | |
426 | ||
427 | if (!line) { | |
428 | warn(_("failed to add line to output")); | |
429 | return NULL; | |
430 | } | |
431 | for (i = 0; i < ncolumns; i++) | |
432 | tt_line_set_data(line, i, | |
433 | get_tabdiff_data(old_fs, new_fs, change, i)); | |
434 | ||
435 | return line; | |
436 | } | |
437 | ||
68164f6c | 438 | static int has_line(struct tt *tt, struct libmnt_fs *fs) |
049caefd KZ |
439 | { |
440 | struct list_head *p; | |
441 | ||
442 | list_for_each(p, &tt->tb_lines) { | |
443 | struct tt_line *ln = list_entry(p, struct tt_line, ln_lines); | |
68164f6c | 444 | if ((struct libmnt_fs *) ln->userdata == fs) |
049caefd KZ |
445 | return 1; |
446 | } | |
447 | return 0; | |
448 | } | |
449 | ||
450 | /* reads filesystems from @tb (libmount) and fillin @tt (output table) */ | |
68164f6c KZ |
451 | static int create_treenode(struct tt *tt, struct libmnt_table *tb, |
452 | struct libmnt_fs *fs, struct tt_line *parent_line) | |
04fd7a9f | 453 | { |
68164f6c KZ |
454 | struct libmnt_fs *chld = NULL; |
455 | struct libmnt_iter *itr = NULL; | |
fdedb45e KZ |
456 | struct tt_line *line; |
457 | int rc = -1; | |
9d67679b | 458 | |
fdedb45e KZ |
459 | if (!fs) { |
460 | /* first call, get root FS */ | |
68164f6c | 461 | if (mnt_table_get_root_fs(tb, &fs)) |
fdedb45e KZ |
462 | goto leave; |
463 | parent_line = NULL; | |
049caefd KZ |
464 | |
465 | } else if ((flags & FL_SUBMOUNTS) && has_line(tt, fs)) | |
466 | return 0; | |
9d67679b | 467 | |
fdedb45e KZ |
468 | itr = mnt_new_iter(MNT_ITER_FORWARD); |
469 | if (!itr) | |
470 | goto leave; | |
9d67679b | 471 | |
fdedb45e KZ |
472 | line = add_line(tt, fs, parent_line); |
473 | if (!line) | |
474 | goto leave; | |
9d67679b | 475 | |
fdedb45e KZ |
476 | /* |
477 | * add all children to the output table | |
478 | */ | |
68164f6c | 479 | while(mnt_table_next_child_fs(tb, itr, fs, &chld) == 0) { |
fdedb45e KZ |
480 | if (create_treenode(tt, tb, chld, line)) |
481 | goto leave; | |
9d67679b | 482 | } |
fdedb45e KZ |
483 | rc = 0; |
484 | leave: | |
485 | mnt_free_iter(itr); | |
486 | return rc; | |
04fd7a9f KZ |
487 | } |
488 | ||
20055151 | 489 | /* error callback */ |
6e5c0fc2 KZ |
490 | static int parser_errcb(struct libmnt_table *tb __attribute__ ((__unused__)), |
491 | const char *filename, int line) | |
20055151 | 492 | { |
b1b9f1c1 | 493 | warnx(_("%s: parse error at line %d"), filename, line); |
20055151 KZ |
494 | return 0; |
495 | } | |
496 | ||
8c5eba3e KZ |
497 | static char **append_tabfile(char **files, int *nfiles, char *filename) |
498 | { | |
499 | void *tmp = realloc(files, sizeof(char *) * (*nfiles + 1)); | |
500 | ||
501 | if (!tmp) { | |
502 | free(files); | |
503 | return NULL; | |
504 | } | |
505 | files = tmp; | |
506 | files[(*nfiles)++] = filename; | |
507 | return files; | |
508 | } | |
509 | ||
fdedb45e | 510 | /* calls libmount fstab/mtab/mountinfo parser */ |
8c5eba3e KZ |
511 | static struct libmnt_table *parse_tabfiles(char **files, |
512 | int nfiles, | |
513 | int tabtype) | |
04fd7a9f | 514 | { |
8c5eba3e | 515 | struct libmnt_table *tb; |
762ef0e1 | 516 | int rc = 0; |
20055151 | 517 | |
8c5eba3e | 518 | tb = mnt_new_table(); |
fdedb45e | 519 | if (!tb) { |
32e5466a | 520 | warn(_("failed to initialize libmount table")); |
04fd7a9f | 521 | return NULL; |
fdedb45e | 522 | } |
68164f6c | 523 | mnt_table_set_parser_errcb(tb, parser_errcb); |
20055151 | 524 | |
8c5eba3e KZ |
525 | do { |
526 | /* NULL means that libmount will use default paths */ | |
527 | const char *path = nfiles ? *files++ : NULL; | |
528 | ||
529 | switch (tabtype) { | |
530 | case TABTYPE_FSTAB: | |
531 | rc = mnt_table_parse_fstab(tb, path); | |
532 | break; | |
533 | case TABTYPE_MTAB: | |
534 | rc = mnt_table_parse_mtab(tb, path); | |
535 | break; | |
536 | case TABTYPE_KERNEL: | |
537 | if (!path) | |
538 | path = access(_PATH_PROC_MOUNTINFO, R_OK) == 0 ? | |
539 | _PATH_PROC_MOUNTINFO : | |
540 | _PATH_PROC_MOUNTS; | |
541 | ||
542 | rc = mnt_table_parse_file(tb, path); | |
543 | break; | |
544 | } | |
545 | if (rc) { | |
546 | mnt_free_table(tb); | |
547 | warn(_("can't read %s"), path); | |
548 | return NULL; | |
549 | } | |
550 | } while (--nfiles > 0); | |
20055151 | 551 | |
04fd7a9f | 552 | return tb; |
04fd7a9f KZ |
553 | } |
554 | ||
2f1ac44b KZ |
555 | /* checks if @tb contains parent->child relations */ |
556 | static int tab_is_tree(struct libmnt_table *tb) | |
557 | { | |
558 | struct libmnt_fs *fs = NULL; | |
559 | struct libmnt_iter *itr = NULL; | |
560 | int rc = 0; | |
561 | ||
562 | itr = mnt_new_iter(MNT_ITER_BACKWARD); | |
563 | if (!itr) | |
564 | return 0; | |
565 | ||
566 | if (mnt_table_next_fs(tb, itr, &fs) == 0) | |
567 | rc = mnt_fs_get_id(fs) > 0 && mnt_fs_get_parent_id(fs) > 0; | |
568 | ||
569 | mnt_free_iter(itr); | |
570 | return rc; | |
571 | } | |
572 | ||
68164f6c | 573 | /* filter function for libmount (mnt_table_find_next_fs()) */ |
6e5c0fc2 KZ |
574 | static int match_func(struct libmnt_fs *fs, |
575 | void *data __attribute__ ((__unused__))) | |
04fd7a9f | 576 | { |
04fd7a9f | 577 | int rc = flags & FL_INVERT ? 1 : 0; |
9d67679b | 578 | const char *m; |
04fd7a9f | 579 | |
9d67679b KZ |
580 | m = get_match(COL_TARGET); |
581 | if (m && !mnt_fs_match_target(fs, m, cache)) | |
04fd7a9f | 582 | return rc; |
9d67679b KZ |
583 | |
584 | m = get_match(COL_SOURCE); | |
585 | if (m && !mnt_fs_match_source(fs, m, cache)) | |
04fd7a9f | 586 | return rc; |
9d67679b KZ |
587 | |
588 | m = get_match(COL_FSTYPE); | |
589 | if (m && !mnt_fs_match_fstype(fs, m)) | |
04fd7a9f | 590 | return rc; |
9d67679b KZ |
591 | |
592 | m = get_match(COL_OPTIONS); | |
593 | if (m && !mnt_fs_match_options(fs, m)) | |
04fd7a9f KZ |
594 | return rc; |
595 | ||
596 | return !rc; | |
597 | } | |
598 | ||
fdedb45e | 599 | /* iterate over filesystems in @tb */ |
68164f6c KZ |
600 | static struct libmnt_fs *get_next_fs(struct libmnt_table *tb, |
601 | struct libmnt_iter *itr) | |
04fd7a9f | 602 | { |
68164f6c | 603 | struct libmnt_fs *fs = NULL; |
9d67679b KZ |
604 | |
605 | if (is_listall_mode()) { | |
606 | /* | |
607 | * Print whole file | |
608 | */ | |
e3963f60 KZ |
609 | if (mnt_table_next_fs(tb, itr, &fs) != 0) |
610 | return NULL; | |
9d67679b KZ |
611 | |
612 | } else if (is_mount_compatible_mode()) { | |
613 | /* | |
614 | * Look up for FS in the same way how mount(8) searchs in fstab | |
615 | * | |
616 | * findmnt -f <spec> | |
617 | */ | |
68164f6c | 618 | fs = mnt_table_find_source(tb, get_match(COL_SOURCE), |
9d67679b | 619 | mnt_iter_get_direction(itr)); |
9a30c6ef KZ |
620 | |
621 | if (!fs && !(flags & FL_NOSWAPMATCH)) | |
68164f6c | 622 | fs = mnt_table_find_target(tb, get_match(COL_SOURCE), |
9d67679b KZ |
623 | mnt_iter_get_direction(itr)); |
624 | } else { | |
625 | /* | |
626 | * Look up for all matching entries | |
627 | * | |
628 | * findmnt [-l] <source> <target> [-O <options>] [-t <types>] | |
629 | * findmnt [-l] <spec> [-O <options>] [-t <types>] | |
630 | */ | |
631 | again: | |
68164f6c | 632 | mnt_table_find_next_fs(tb, itr, match_func, NULL, &fs); |
9d67679b KZ |
633 | |
634 | if (!fs && | |
635 | !(flags & FL_NOSWAPMATCH) && | |
636 | !get_match(COL_TARGET) && get_match(COL_SOURCE)) { | |
637 | ||
638 | /* swap 'spec' and target. */ | |
639 | set_match(COL_TARGET, get_match(COL_SOURCE)); | |
640 | set_match(COL_SOURCE, NULL); | |
641 | mnt_reset_iter(itr, -1); | |
642 | ||
643 | goto again; | |
644 | } | |
645 | } | |
9d67679b | 646 | |
fdedb45e | 647 | return fs; |
04fd7a9f KZ |
648 | } |
649 | ||
68164f6c KZ |
650 | static int add_matching_lines(struct libmnt_table *tb, |
651 | struct tt *tt, int direction) | |
049caefd | 652 | { |
68164f6c KZ |
653 | struct libmnt_iter *itr = NULL; |
654 | struct libmnt_fs *fs; | |
049caefd KZ |
655 | int nlines = 0, rc = -1; |
656 | ||
657 | itr = mnt_new_iter(direction); | |
658 | if (!itr) { | |
659 | warn(_("failed to initialize libmount iterator")); | |
660 | goto done; | |
661 | } | |
662 | ||
663 | while((fs = get_next_fs(tb, itr))) { | |
664 | if ((tt_flags & TT_FL_TREE) || (flags & FL_SUBMOUNTS)) | |
665 | rc = create_treenode(tt, tb, fs, NULL); | |
666 | else | |
667 | rc = !add_line(tt, fs, NULL); | |
668 | if (rc) | |
669 | goto done; | |
670 | nlines++; | |
671 | if (flags & FL_FIRSTONLY) | |
672 | break; | |
673 | flags |= FL_NOSWAPMATCH; | |
674 | } | |
675 | ||
676 | if (nlines) | |
677 | rc = 0; | |
678 | done: | |
679 | mnt_free_iter(itr); | |
680 | return rc; | |
681 | } | |
682 | ||
582a5006 KZ |
683 | static int poll_match(struct libmnt_fs *fs) |
684 | { | |
685 | int rc = match_func(fs, NULL); | |
686 | ||
687 | if (rc == 0 && !(flags & FL_NOSWAPMATCH) && | |
688 | get_match(COL_SOURCE) && !get_match(COL_TARGET)) { | |
689 | /* | |
690 | * findmnt --poll /foo | |
691 | * The '/foo' source as well as target. | |
692 | */ | |
693 | const char *str = get_match(COL_SOURCE); | |
694 | ||
695 | set_match(COL_TARGET, str); /* swap */ | |
696 | set_match(COL_SOURCE, NULL); | |
697 | ||
698 | rc = match_func(fs, NULL); | |
699 | ||
700 | set_match(COL_TARGET, NULL); /* restore */ | |
701 | set_match(COL_SOURCE, str); | |
702 | ||
703 | } | |
704 | return rc; | |
705 | } | |
706 | ||
32e5466a KZ |
707 | static int poll_table(struct libmnt_table *tb, const char *tabfile, |
708 | int timeout, struct tt *tt, int direction) | |
709 | { | |
d1cabd5c | 710 | FILE *f = NULL; |
32e5466a KZ |
711 | int rc = -1; |
712 | struct libmnt_iter *itr = NULL; | |
713 | struct libmnt_table *tb_new = NULL; | |
714 | struct libmnt_tabdiff *diff = NULL; | |
715 | struct pollfd fds[1]; | |
716 | ||
717 | tb_new = mnt_new_table(); | |
718 | if (!tb_new) { | |
719 | warn(_("failed to initialize libmount table")); | |
720 | goto done; | |
721 | } | |
722 | ||
723 | itr = mnt_new_iter(direction); | |
724 | if (!itr) { | |
725 | warn(_("failed to initialize libmount iterator")); | |
726 | goto done; | |
727 | } | |
728 | ||
729 | diff = mnt_new_tabdiff(); | |
730 | if (!diff) { | |
731 | warn(_("failed to initialize libmount tabdiff")); | |
732 | goto done; | |
733 | } | |
734 | ||
735 | /* cache is unnecessary to detect changes */ | |
736 | mnt_table_set_cache(tb, NULL); | |
737 | mnt_table_set_cache(tb_new, NULL); | |
738 | ||
739 | f = fopen(tabfile, "r"); | |
740 | if (!f) { | |
741 | warn(_("%s: open failed"), tabfile); | |
742 | goto done; | |
743 | } | |
744 | ||
745 | mnt_table_set_parser_errcb(tb_new, parser_errcb); | |
746 | ||
747 | fds[0].fd = fileno(f); | |
748 | fds[0].events = POLLPRI; | |
749 | ||
750 | while (1) { | |
751 | struct libmnt_table *tmp; | |
752 | struct libmnt_fs *old, *new; | |
582a5006 | 753 | int change, count; |
32e5466a | 754 | |
582a5006 KZ |
755 | count = poll(fds, 1, timeout); |
756 | if (count == 0) | |
ad38fb9f | 757 | break; /* timeout */ |
582a5006 | 758 | if (count < 0) { |
32e5466a KZ |
759 | warn(_("poll() failed")); |
760 | goto done; | |
761 | } | |
762 | ||
763 | rewind(f); | |
764 | rc = mnt_table_parse_stream(tb_new, f, tabfile); | |
765 | if (!rc) | |
766 | rc = mnt_diff_tables(diff, tb, tb_new); | |
767 | if (rc < 0) | |
768 | goto done; | |
769 | ||
582a5006 | 770 | count = 0; |
32e5466a KZ |
771 | mnt_reset_iter(itr, direction); |
772 | while(mnt_tabdiff_next_change( | |
773 | diff, itr, &old, &new, &change) == 0) { | |
774 | ||
582a5006 KZ |
775 | if (!has_poll_action(change)) |
776 | continue; | |
777 | if (!poll_match(new ? new : old)) | |
778 | continue; | |
779 | count++; | |
32e5466a KZ |
780 | rc = !add_tabdiff_line(tt, new, old, change); |
781 | if (rc) | |
782 | goto done; | |
783 | if (flags & FL_FIRSTONLY) | |
784 | break; | |
785 | } | |
786 | ||
582a5006 KZ |
787 | if (count) { |
788 | rc = tt_print_table(tt); | |
789 | if (rc) | |
790 | goto done; | |
791 | } | |
32e5466a KZ |
792 | |
793 | /* swap tables */ | |
794 | tmp = tb; | |
795 | tb = tb_new; | |
796 | tb_new = tmp; | |
797 | ||
798 | tt_remove_lines(tt); | |
799 | mnt_reset_table(tb_new); | |
582a5006 KZ |
800 | |
801 | if (count && (flags & FL_FIRSTONLY)) | |
802 | break; | |
32e5466a KZ |
803 | } |
804 | ||
805 | rc = 0; | |
806 | done: | |
807 | mnt_free_table(tb_new); | |
808 | mnt_free_tabdiff(diff); | |
809 | mnt_free_iter(itr); | |
d1cabd5c KZ |
810 | if (f) |
811 | fclose(f); | |
32e5466a KZ |
812 | return rc; |
813 | } | |
814 | ||
abafd686 | 815 | static void __attribute__((__noreturn__)) usage(FILE *out) |
04fd7a9f | 816 | { |
9ead0006 KZ |
817 | int i; |
818 | ||
9d67679b KZ |
819 | fprintf(out, _( |
820 | "\nUsage:\n" | |
821 | " %1$s [options]\n" | |
822 | " %1$s [options] <device> | <mountpoint>\n" | |
823 | " %1$s [options] <device> <mountpoint>\n" | |
824 | " %1$s [options] [--source <device>] [--target <mountpoint>]\n"), | |
825 | program_invocation_short_name); | |
04fd7a9f KZ |
826 | |
827 | fprintf(out, _( | |
9d67679b | 828 | "\nOptions:\n" |
2f1ac44b | 829 | " -s, --fstab search in static table of filesystems\n" |
cbec3cbf | 830 | " -m, --mtab search in table of mounted filesystems\n" |
c3214059 | 831 | " -k, --kernel search in kernel table of mounted\n" |
415b61fc | 832 | " filesystems (default)\n\n")); |
04fd7a9f | 833 | |
415b61fc | 834 | fprintf(out, _( |
582a5006 | 835 | " -p, --poll[=<list>] monitor changes in table of mounted filesystems\n" |
415b61fc | 836 | " -w, --timeout <num> upper limit in milliseconds that --poll will block\n\n")); |
32e5466a | 837 | |
415b61fc | 838 | fprintf(out, _( |
c3214059 | 839 | " -a, --ascii use ASCII chars for tree formatting\n" |
04fd7a9f | 840 | " -c, --canonicalize canonicalize printed paths\n" |
c3214059 BS |
841 | " -d, --direction <word> direction of search, 'forward' or 'backward'\n" |
842 | " -e, --evaluate convert tags (LABEL/UUID) to device names\n" | |
2f1ac44b | 843 | " -F, --tab-file <path> alternative file for --fstab, --mtab or --kernel options\n" |
415b61fc BS |
844 | " -f, --first-only print the first found filesystem only\n")); |
845 | ||
846 | fprintf(out, _( | |
c3214059 BS |
847 | " -h, --help display this help text and exit\n" |
848 | " -i, --invert invert the sense of matching\n" | |
46236388 | 849 | " -l, --list use list format output\n" |
c3214059 | 850 | " -n, --noheadings don't print column headings\n" |
415b61fc BS |
851 | " -u, --notruncate don't truncate text in columns\n")); |
852 | fprintf(out, _( | |
04fd7a9f | 853 | " -O, --options <list> limit the set of filesystems by mount options\n" |
c3214059 | 854 | " -o, --output <list> the output columns to be shown\n" |
49e9fd3a KZ |
855 | " -P, --pairs use key=\"value\" output format\n" |
856 | " -r, --raw use raw output format\n" | |
415b61fc BS |
857 | " -t, --types <list> limit the set of filesystems by FS types\n")); |
858 | fprintf(out, _( | |
b2214e1f | 859 | " -v, --nofsroot don't print [/dir] for bind or btrfs mounts\n" |
c3214059 BS |
860 | " -R, --submounts print all submounts for the matching filesystems\n" |
861 | " -S, --source <string> the device to mount (by name, LABEL= or UUID=)\n" | |
862 | " -T, --target <string> the mountpoint to use\n\n")); | |
04fd7a9f | 863 | |
9ead0006 KZ |
864 | |
865 | fprintf(out, _("\nAvailable columns:\n")); | |
866 | ||
b152e359 KZ |
867 | for (i = 0; i < FINDMNT_NCOLUMNS; i++) |
868 | fprintf(out, " %11s %s\n", infos[i].name, _(infos[i].help)); | |
9ead0006 | 869 | |
9ead0006 | 870 | |
04fd7a9f KZ |
871 | fprintf(out, _("\nFor more information see findmnt(1).\n")); |
872 | ||
873 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
874 | } | |
875 | ||
abafd686 | 876 | static void __attribute__((__noreturn__)) |
9d67679b KZ |
877 | errx_mutually_exclusive(const char *opts) |
878 | { | |
879 | errx(EXIT_FAILURE, "%s %s", opts, _("options are mutually exclusive")); | |
880 | } | |
881 | ||
04fd7a9f KZ |
882 | int main(int argc, char *argv[]) |
883 | { | |
68164f6c | 884 | struct libmnt_table *tb = NULL; |
8c5eba3e | 885 | char **tabfiles = NULL; |
9d67679b | 886 | int direction = MNT_ITER_FORWARD; |
ad38fb9f | 887 | int i, c, rc = -1, timeout = -1; |
8c5eba3e | 888 | int ntabfiles = 0, tabtype = 0; |
fdedb45e KZ |
889 | |
890 | /* table.h */ | |
891 | struct tt *tt = NULL; | |
fdedb45e | 892 | |
6c7d5ae9 | 893 | static const struct option longopts[] = { |
9d67679b | 894 | { "ascii", 0, 0, 'a' }, |
04fd7a9f KZ |
895 | { "canonicalize", 0, 0, 'c' }, |
896 | { "direction", 1, 0, 'd' }, | |
897 | { "evaluate", 0, 0, 'e' }, | |
9d67679b | 898 | { "first-only", 0, 0, 'f' }, |
2f1ac44b | 899 | { "fstab", 0, 0, 's' }, |
04fd7a9f KZ |
900 | { "help", 0, 0, 'h' }, |
901 | { "invert", 0, 0, 'i' }, | |
9d67679b KZ |
902 | { "kernel", 0, 0, 'k' }, |
903 | { "list", 0, 0, 'l' }, | |
904 | { "mtab", 0, 0, 'm' }, | |
905 | { "noheadings", 0, 0, 'n' }, | |
906 | { "notruncate", 0, 0, 'u' }, | |
04fd7a9f | 907 | { "options", 1, 0, 'O' }, |
9d67679b | 908 | { "output", 1, 0, 'o' }, |
582a5006 | 909 | { "poll", 2, 0, 'p' }, |
49e9fd3a | 910 | { "pairs", 0, 0, 'P' }, |
9d67679b | 911 | { "raw", 0, 0, 'r' }, |
04fd7a9f | 912 | { "types", 1, 0, 't' }, |
b2214e1f | 913 | { "fsroot", 0, 0, 'v' }, |
049caefd | 914 | { "submounts", 0, 0, 'R' }, |
9d67679b | 915 | { "source", 1, 0, 'S' }, |
2f1ac44b | 916 | { "tab-file", 1, 0, 'F' }, |
9d67679b | 917 | { "target", 1, 0, 'T' }, |
ad38fb9f | 918 | { "timeout", 1, 0, 'w' }, |
9d67679b | 919 | |
04fd7a9f KZ |
920 | { NULL, 0, 0, 0 } |
921 | }; | |
922 | ||
af0dc7d3 | 923 | assert(ARRAY_SIZE(columns) == FINDMNT_NCOLUMNS); |
9d67679b | 924 | |
04fd7a9f KZ |
925 | setlocale(LC_ALL, ""); |
926 | bindtextdomain(PACKAGE, LOCALEDIR); | |
927 | textdomain(PACKAGE); | |
928 | ||
9d67679b | 929 | /* default output format */ |
fdedb45e | 930 | tt_flags |= TT_FL_TREE; |
04fd7a9f | 931 | |
9d67679b | 932 | while ((c = getopt_long(argc, argv, |
2f1ac44b | 933 | "acd:ehifF:o:O:p::Pklmnrst:uvRS:T:w:", |
d466c6a1 | 934 | longopts, NULL)) != -1) { |
04fd7a9f | 935 | switch(c) { |
9d67679b | 936 | case 'a': |
fdedb45e | 937 | tt_flags |= TT_FL_ASCII; |
9d67679b | 938 | break; |
04fd7a9f KZ |
939 | case 'c': |
940 | flags |= FL_CANONICALIZE; | |
941 | break; | |
942 | case 'd': | |
4e6bd74c | 943 | if (!strcmp(optarg, "forward")) |
04fd7a9f | 944 | direction = MNT_ITER_FORWARD; |
4e6bd74c | 945 | else if (!strcmp(optarg, "backward")) |
04fd7a9f KZ |
946 | direction = MNT_ITER_BACKWARD; |
947 | else | |
948 | errx(EXIT_FAILURE, | |
8e350e48 | 949 | _("unknown direction '%s'"), optarg); |
04fd7a9f KZ |
950 | break; |
951 | case 'e': | |
952 | flags |= FL_EVALUATE; | |
953 | break; | |
954 | case 'h': | |
955 | usage(stdout); | |
956 | break; | |
957 | case 'i': | |
958 | flags |= FL_INVERT; | |
959 | break; | |
9d67679b | 960 | case 'f': |
04fd7a9f KZ |
961 | flags |= FL_FIRSTONLY; |
962 | break; | |
2f1ac44b | 963 | case 'F': |
8c5eba3e | 964 | tabfiles = append_tabfile(tabfiles, &ntabfiles, optarg); |
2f1ac44b | 965 | break; |
9d67679b | 966 | case 'u': |
32e5466a | 967 | disable_columns_truncate(); |
9d67679b | 968 | break; |
04fd7a9f | 969 | case 'o': |
c87638ad | 970 | ncolumns = string_to_idarray(optarg, |
bdc3ed66 KZ |
971 | columns, ARRAY_SIZE(columns), |
972 | column_name_to_id); | |
973 | if (ncolumns < 0) | |
fdedb45e | 974 | exit(EXIT_FAILURE); |
04fd7a9f KZ |
975 | break; |
976 | case 'O': | |
9d67679b | 977 | set_match(COL_OPTIONS, optarg); |
04fd7a9f | 978 | break; |
32e5466a | 979 | case 'p': |
bdc3ed66 | 980 | if (optarg) { |
c87638ad | 981 | nactions = string_to_idarray(optarg, |
bdc3ed66 KZ |
982 | actions, ARRAY_SIZE(actions), |
983 | poll_action_name_to_id); | |
984 | if (nactions < 0) | |
985 | exit(EXIT_FAILURE); | |
986 | } | |
32e5466a KZ |
987 | flags |= FL_POLL; |
988 | tt_flags &= ~TT_FL_TREE; | |
989 | break; | |
49e9fd3a KZ |
990 | case 'P': |
991 | tt_flags |= TT_FL_EXPORT; | |
992 | tt_flags &= ~TT_FL_TREE; | |
993 | break; | |
fdedb45e | 994 | case 'm': /* mtab */ |
8c5eba3e | 995 | if (tabtype) |
9d67679b | 996 | errx_mutually_exclusive("--{fstab,mtab,kernel}"); |
8c5eba3e | 997 | tabtype = TABTYPE_MTAB; |
fdedb45e | 998 | tt_flags &= ~TT_FL_TREE; |
04fd7a9f | 999 | break; |
fdedb45e | 1000 | case 's': /* fstab */ |
8c5eba3e | 1001 | if (tabtype) |
9d67679b | 1002 | errx_mutually_exclusive("--{fstab,mtab,kernel}"); |
8c5eba3e | 1003 | tabtype = TABTYPE_FSTAB; |
ac808156 | 1004 | tt_flags &= ~TT_FL_TREE; |
04fd7a9f | 1005 | break; |
fdedb45e | 1006 | case 'k': /* kernel (mountinfo) */ |
8c5eba3e | 1007 | if (tabtype) |
9d67679b | 1008 | errx_mutually_exclusive("--{fstab,mtab,kernel}"); |
8c5eba3e | 1009 | tabtype = TABTYPE_KERNEL; |
04fd7a9f KZ |
1010 | break; |
1011 | case 't': | |
9d67679b KZ |
1012 | set_match(COL_FSTYPE, optarg); |
1013 | break; | |
1014 | case 'r': | |
fdedb45e KZ |
1015 | tt_flags &= ~TT_FL_TREE; /* disable the default */ |
1016 | tt_flags |= TT_FL_RAW; /* enable raw */ | |
9d67679b KZ |
1017 | break; |
1018 | case 'l': | |
49e9fd3a KZ |
1019 | if ((tt_flags & TT_FL_RAW) && (tt_flags & TT_FL_EXPORT)) |
1020 | errx_mutually_exclusive("--{raw,list,pairs}"); | |
9d67679b | 1021 | |
fdedb45e | 1022 | tt_flags &= ~TT_FL_TREE; /* disable the default */ |
9d67679b KZ |
1023 | break; |
1024 | case 'n': | |
fdedb45e | 1025 | tt_flags |= TT_FL_NOHEADINGS; |
9d67679b | 1026 | break; |
b2214e1f KZ |
1027 | case 'v': |
1028 | flags |= FL_NOFSROOT; | |
1029 | break; | |
049caefd KZ |
1030 | case 'R': |
1031 | flags |= FL_SUBMOUNTS; | |
1032 | break; | |
9d67679b KZ |
1033 | case 'S': |
1034 | set_match(COL_SOURCE, optarg); | |
1035 | flags |= FL_NOSWAPMATCH; | |
1036 | break; | |
1037 | case 'T': | |
1038 | set_match(COL_TARGET, optarg); | |
1039 | flags |= FL_NOSWAPMATCH; | |
04fd7a9f | 1040 | break; |
ad38fb9f KZ |
1041 | case 'w': |
1042 | timeout = strtol_or_err(optarg, | |
1043 | _("failed to parse timeout")); | |
1044 | break; | |
04fd7a9f KZ |
1045 | default: |
1046 | usage(stderr); | |
1047 | break; | |
1048 | } | |
1049 | } | |
1050 | ||
32e5466a KZ |
1051 | /* default columns */ |
1052 | if (!ncolumns) { | |
1053 | if (flags & FL_POLL) | |
1054 | columns[ncolumns++] = COL_ACTION; | |
1055 | ||
1056 | columns[ncolumns++] = COL_TARGET; | |
1057 | columns[ncolumns++] = COL_SOURCE; | |
1058 | columns[ncolumns++] = COL_FSTYPE; | |
1059 | columns[ncolumns++] = COL_OPTIONS; | |
1060 | } | |
1061 | ||
8c5eba3e KZ |
1062 | if (!tabtype) |
1063 | tabtype = TABTYPE_KERNEL; | |
2f1ac44b | 1064 | |
9d67679b | 1065 | |
8c5eba3e KZ |
1066 | if (flags & FL_POLL) { |
1067 | if (tabtype != TABTYPE_KERNEL) | |
1068 | errx_mutually_exclusive("--{poll,fstab,mtab}"); | |
1069 | if (ntabfiles > 1) | |
1070 | errx(EXIT_FAILURE, _("--poll accepts only one file, but mure specified by --tab-file")); | |
fdedb45e | 1071 | } |
b2214e1f | 1072 | |
9d67679b KZ |
1073 | if (optind < argc && (get_match(COL_SOURCE) || get_match(COL_TARGET))) |
1074 | errx(EXIT_FAILURE, _( | |
1075 | "options --target and --source can't be used together " | |
1076 | "with command line element that is not an option")); | |
1077 | ||
04fd7a9f | 1078 | if (optind < argc) |
9d67679b | 1079 | set_match(COL_SOURCE, argv[optind++]); /* dev/tag/mountpoint */ |
04fd7a9f | 1080 | if (optind < argc) |
9d67679b | 1081 | set_match(COL_TARGET, argv[optind++]); /* mountpoint */ |
04fd7a9f | 1082 | |
049caefd KZ |
1083 | if ((flags & FL_SUBMOUNTS) && is_listall_mode()) |
1084 | /* don't care about submounts if list all mounts */ | |
1085 | flags &= ~FL_SUBMOUNTS; | |
1086 | ||
1087 | if (!(flags & FL_SUBMOUNTS) && | |
1088 | (!is_listall_mode() || (flags & FL_FIRSTONLY))) | |
fdedb45e KZ |
1089 | tt_flags &= ~TT_FL_TREE; |
1090 | ||
ac808156 KZ |
1091 | if (!(flags & FL_NOSWAPMATCH) && |
1092 | !get_match(COL_TARGET) && get_match(COL_SOURCE)) { | |
1093 | /* | |
1094 | * Check if we can swap source and target, it's | |
1095 | * not possible if the source is LABEL=/UUID= | |
1096 | */ | |
1097 | const char *x = get_match(COL_SOURCE); | |
1098 | ||
1099 | if (!strncmp(x, "LABEL=", 6) || !strncmp(x, "UUID=", 5)) | |
1100 | flags |= FL_NOSWAPMATCH; | |
1101 | } | |
1102 | ||
fdedb45e KZ |
1103 | /* |
1104 | * initialize libmount | |
1105 | */ | |
ac808156 KZ |
1106 | mnt_init_debug(0); |
1107 | ||
8c5eba3e | 1108 | tb = parse_tabfiles(tabfiles, ntabfiles, tabtype); |
04fd7a9f | 1109 | if (!tb) |
fdedb45e | 1110 | goto leave; |
04fd7a9f | 1111 | |
2f1ac44b KZ |
1112 | if ((tt_flags & TT_FL_TREE) && !tab_is_tree(tb)) |
1113 | tt_flags &= ~TT_FL_TREE; | |
1114 | ||
04fd7a9f | 1115 | cache = mnt_new_cache(); |
fdedb45e KZ |
1116 | if (!cache) { |
1117 | warn(_("failed to initialize libmount cache")); | |
1118 | goto leave; | |
1119 | } | |
68164f6c | 1120 | mnt_table_set_cache(tb, cache); |
04fd7a9f | 1121 | |
fdedb45e | 1122 | /* |
00b4bcdf | 1123 | * initialize output formatting (tt.h) |
fdedb45e KZ |
1124 | */ |
1125 | tt = tt_new_table(tt_flags); | |
1126 | if (!tt) { | |
1127 | warn(_("failed to initialize output table")); | |
1128 | goto leave; | |
1129 | } | |
ac808156 | 1130 | |
fdedb45e | 1131 | for (i = 0; i < ncolumns; i++) { |
32e5466a KZ |
1132 | int fl = get_column_flags(i); |
1133 | int id = get_column_id(i); | |
1134 | ||
1135 | if (!(tt_flags & TT_FL_TREE)) | |
1136 | fl &= ~TT_FL_TREE; | |
04fd7a9f | 1137 | |
32e5466a | 1138 | if (!(flags & FL_POLL) && is_tabdiff_column(id)) { |
77a1c5f7 | 1139 | warnx(_("%s column is requested, but --poll " |
32e5466a KZ |
1140 | "is not enabled"), get_column_name(i)); |
1141 | goto leave; | |
1142 | } | |
fdedb45e KZ |
1143 | if (!tt_define_column(tt, get_column_name(i), |
1144 | get_column_whint(i), fl)) { | |
1145 | warn(_("failed to initialize output column")); | |
1146 | goto leave; | |
9d67679b | 1147 | } |
fdedb45e | 1148 | } |
9d67679b | 1149 | |
fdedb45e KZ |
1150 | /* |
1151 | * Fill in data to the output table | |
1152 | */ | |
275c9a48 | 1153 | if (flags & FL_POLL) { |
8c5eba3e | 1154 | /* poll mode (accept the first tabfile only) */ |
275c9a48 KZ |
1155 | if (tabfiles && ntabfiles > 0) |
1156 | rc = poll_table(tb, *tabfiles, timeout, tt, direction); | |
32e5466a | 1157 | |
275c9a48 | 1158 | } else if ((tt_flags & TT_FL_TREE) && is_listall_mode()) |
049caefd KZ |
1159 | /* whole tree */ |
1160 | rc = create_treenode(tt, tb, NULL, NULL); | |
1161 | else | |
1162 | /* whole lits of sub-tree */ | |
1163 | rc = add_matching_lines(tb, tt, direction); | |
fdedb45e KZ |
1164 | |
1165 | /* | |
32e5466a | 1166 | * Print the output table for non-poll modes |
fdedb45e | 1167 | */ |
32e5466a | 1168 | if (!rc && !(flags & FL_POLL)) |
049caefd | 1169 | tt_print_table(tt); |
fdedb45e KZ |
1170 | leave: |
1171 | tt_free_table(tt); | |
1172 | ||
68164f6c | 1173 | mnt_free_table(tb); |
04fd7a9f | 1174 | mnt_free_cache(cache); |
8c5eba3e | 1175 | free(tabfiles); |
04fd7a9f | 1176 | |
049caefd | 1177 | return rc ? EXIT_FAILURE : EXIT_SUCCESS; |
04fd7a9f | 1178 | } |