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1 | /* | |
2 | * Copyright (C) 2008-2009 Karel Zak <kzak@redhat.com> | |
3 | * | |
4 | * This file may be redistributed under the terms of the | |
5 | * GNU Lesser General Public License. | |
6 | * | |
7 | * The mnt_fs is representation of one line in a fstab / mtab / mountinfo. | |
8 | */ | |
9 | ||
10 | #include <stdio.h> | |
11 | #include <string.h> | |
12 | #include <stdlib.h> | |
13 | #include <ctype.h> | |
14 | #include <errno.h> | |
15 | #include <blkid/blkid.h> | |
16 | ||
17 | #include "nls.h" | |
18 | #include "mountP.h" | |
19 | ||
20 | /** | |
21 | * mnt_new_fs: | |
22 | * | |
23 | * Returns newly allocated mnt_file fs. | |
24 | */ | |
25 | mnt_fs *mnt_new_fs(void) | |
26 | { | |
27 | mnt_fs *fs = calloc(1, sizeof(struct _mnt_fs)); | |
28 | if (!fs) | |
29 | return NULL; | |
30 | ||
31 | INIT_LIST_HEAD(&fs->ents); | |
32 | return fs; | |
33 | } | |
34 | ||
35 | /** | |
36 | * mnt_free_fs: | |
37 | * @fs: fs pointer | |
38 | * | |
39 | * Deallocates the fs. | |
40 | */ | |
41 | void mnt_free_fs(mnt_fs *fs) | |
42 | { | |
43 | if (!fs) | |
44 | return; | |
45 | list_del(&fs->ents); | |
46 | ||
47 | free(fs->source); | |
48 | free(fs->tagname); | |
49 | free(fs->tagval); | |
50 | free(fs->mntroot); | |
51 | free(fs->target); | |
52 | free(fs->fstype); | |
53 | free(fs->optstr); | |
54 | free(fs->vfs_optstr); | |
55 | free(fs->fs_optstr); | |
56 | ||
57 | free(fs); | |
58 | } | |
59 | ||
60 | /** | |
61 | * mnt_fs_get_userdata: | |
62 | * @fs: mnt_file instance | |
63 | * | |
64 | * Returns private data set by mnt_fs_set_userdata() or NULL. | |
65 | */ | |
66 | void *mnt_fs_get_userdata(mnt_fs *fs) | |
67 | { | |
68 | return fs ? fs->userdata : NULL; | |
69 | } | |
70 | ||
71 | /** | |
72 | * mnt_fs_set_userdata: | |
73 | * @fs: mnt_file instance | |
74 | * | |
75 | * The "userdata" are library independent data. | |
76 | * | |
77 | * Returns 0 or -1 in case of error (if @fs is NULL). | |
78 | */ | |
79 | int mnt_fs_set_userdata(mnt_fs *fs, void *data) | |
80 | { | |
81 | if (!fs) | |
82 | return -1; | |
83 | fs->userdata = data; | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /** | |
88 | * mnt_fs_get_srcpath: | |
89 | * @fs: mnt_file (fstab/mtab/mountinfo) fs | |
90 | * | |
91 | * The mount "source path" is: | |
92 | * - a directory for 'bind' mounts (in fstab or mtab only) | |
93 | * - a device name for standard mounts | |
94 | * - NULL when path is not set (for example when TAG | |
95 | * (LABEL/UUID) is defined) | |
96 | * | |
97 | * See also mnt_fs_get_tag() and mnt_fs_get_source(). | |
98 | * | |
99 | * Returns mount "source" path or NULL in case of error or when the path | |
100 | * is not defined. | |
101 | * | |
102 | */ | |
103 | const char *mnt_fs_get_srcpath(mnt_fs *fs) | |
104 | { | |
105 | assert(fs); | |
106 | if (!fs) | |
107 | return NULL; | |
108 | ||
109 | /* fstab-like fs */ | |
110 | if (fs->tagname) | |
111 | return NULL; /* the source contains a "NAME=value" */ | |
112 | return fs->source; | |
113 | } | |
114 | ||
115 | /** | |
116 | * @fs: mnt_file (fstab/mtab/mountinfo) fs | |
117 | * | |
118 | * Returns mount "source". Note that the source could be unparsed TAG | |
119 | * (LABEL/UUID). See also mnt_fs_get_srcpath() and mnt_fs_get_tag(). | |
120 | */ | |
121 | const char *mnt_fs_get_source(mnt_fs *fs) | |
122 | { | |
123 | return fs ? fs->source : NULL; | |
124 | } | |
125 | ||
126 | /* Used by parser mnt_file ONLY (@source has to be allocated) */ | |
127 | int __mnt_fs_set_source(mnt_fs *fs, char *source) | |
128 | { | |
129 | assert(fs); | |
130 | ||
131 | if (!source) | |
132 | return -1; | |
133 | ||
134 | if (strchr(source, '=')) { | |
135 | char *name, *val; | |
136 | ||
137 | if (blkid_parse_tag_string(source, &name, &val) != 0) | |
138 | return -1; | |
139 | ||
140 | fs->tagval = val; | |
141 | fs->tagname = name; | |
142 | } | |
143 | ||
144 | fs->source = source; | |
145 | return 0; | |
146 | } | |
147 | ||
148 | /** | |
149 | * mnt_fs_set_source: | |
150 | * @fs: fstab/mtab/mountinfo entry | |
151 | * @source: new source | |
152 | * | |
153 | * Returns 0 on success or -1 in case of error. | |
154 | */ | |
155 | int mnt_fs_set_source(mnt_fs *fs, const char *source) | |
156 | { | |
157 | char *p; | |
158 | ||
159 | if (!fs && !source) | |
160 | return -1; | |
161 | ||
162 | p = strdup(source); | |
163 | if (!p) | |
164 | return -1; | |
165 | ||
166 | free(fs->tagval); | |
167 | free(fs->tagname); | |
168 | free(fs->source); | |
169 | fs->tagval = fs->tagname = fs->source = NULL; | |
170 | ||
171 | return __mnt_fs_set_source(fs, p); | |
172 | } | |
173 | ||
174 | /** | |
175 | * mnt_fs_get_tag: | |
176 | * @fs: fs | |
177 | * @name: returns pointer to NAME string | |
178 | * @value: returns pointer to VALUE string | |
179 | * | |
180 | * "TAG" is NAME=VALUE (e.g. LABEL=foo) | |
181 | * | |
182 | * The TAG is the first column in the fstab file. The TAG | |
183 | * or "srcpath" has to be always set for all entries. | |
184 | * | |
185 | * See also mnt_fs_get_source(). | |
186 | * | |
187 | * Example: | |
188 | * char *src; | |
189 | * mnt_fs *fs = mnt_file_find_target(mf, "/home"); | |
190 | * | |
191 | * if (!fs) | |
192 | * goto err; | |
193 | * | |
194 | * src = mnt_fs_get_srcpath(fs); | |
195 | * if (!src) { | |
196 | * char *tag, *val; | |
197 | * if (mnt_fs_get_tag(fs, &tag, &val) == 0) | |
198 | * printf("%s: %s\n", tag, val); // LABEL or UUID | |
199 | * } else | |
200 | * printf("device: %s\n", src); // device or bind path | |
201 | * | |
202 | * Returns 0 on success or -1 in case that a TAG is not defined. | |
203 | */ | |
204 | int mnt_fs_get_tag(mnt_fs *fs, const char **name, const char **value) | |
205 | { | |
206 | if (fs == NULL || !fs->tagname) | |
207 | return -1; | |
208 | if (name) | |
209 | *name = fs->tagname; | |
210 | if (value) | |
211 | *value = fs->tagval; | |
212 | return 0; | |
213 | } | |
214 | ||
215 | /** | |
216 | * mnt_fs_get_target: | |
217 | * @fs: fstab/mtab/mountinfo entry pointer | |
218 | * | |
219 | * Returns pointer to mountpoint path or NULL | |
220 | */ | |
221 | const char *mnt_fs_get_target(mnt_fs *fs) | |
222 | { | |
223 | assert(fs); | |
224 | return fs ? fs->target : NULL; | |
225 | } | |
226 | ||
227 | /** | |
228 | * mnt_fs_set_target: | |
229 | * @fs: fstab/mtab/mountinfo entry | |
230 | * @target: mountpoint | |
231 | * | |
232 | * Returns 0 on success or -1 in case of error. | |
233 | */ | |
234 | int mnt_fs_set_target(mnt_fs *fs, const char *target) | |
235 | { | |
236 | char *p; | |
237 | ||
238 | assert(fs); | |
239 | ||
240 | if (!fs || !target) | |
241 | return -1; | |
242 | ||
243 | p = strdup(target); | |
244 | if (!p) | |
245 | return -1; | |
246 | free(fs->target); | |
247 | fs->target = p; | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | /** | |
253 | * mnt_fs_get_fstype: | |
254 | * @fs: fstab/mtab/mountinfo entry pointer | |
255 | * | |
256 | * Returns pointer to filesystem type. | |
257 | */ | |
258 | const char *mnt_fs_get_fstype(mnt_fs *fs) | |
259 | { | |
260 | assert(fs); | |
261 | return fs ? fs->fstype : NULL; | |
262 | } | |
263 | ||
264 | /* Used by mnt_file parser only */ | |
265 | int __mnt_fs_set_fstype(mnt_fs *fs, char *fstype) | |
266 | { | |
267 | assert(fs); | |
268 | ||
269 | if (!fstype) | |
270 | return -1; | |
271 | ||
272 | fs->fstype = fstype; | |
273 | fs->flags &= ~MNT_FS_PSEUDO; | |
274 | fs->flags &= ~MNT_FS_NET; | |
275 | ||
276 | /* save info about pseudo filesystems */ | |
277 | if (mnt_fstype_is_pseudofs(fs->fstype)) | |
278 | fs->flags |= MNT_FS_PSEUDO; | |
279 | else if (mnt_fstype_is_netfs(fs->fstype)) | |
280 | fs->flags |= MNT_FS_NET; | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | /** | |
286 | * mnt_fs_set_fstype: | |
287 | * @fs: fstab/mtab/mountinfo entry | |
288 | * @fstype: filesystem type | |
289 | * | |
290 | * Returns 0 on success or -1 in case of error. | |
291 | */ | |
292 | int mnt_fs_set_fstype(mnt_fs *fs, const char *fstype) | |
293 | { | |
294 | char *p; | |
295 | ||
296 | if (!fs || !fstype) | |
297 | return -1; | |
298 | ||
299 | p = strdup(fstype); | |
300 | if (!p) | |
301 | return -1; | |
302 | free(fs->fstype); | |
303 | ||
304 | return __mnt_fs_set_fstype(fs, p); | |
305 | } | |
306 | ||
307 | /** | |
308 | * mnt_fs_get_optstr: | |
309 | * @fs: fstab/mtab/mountinfo entry pointer | |
310 | * | |
311 | * Returns pointer to mount option string with all options (FS and VFS) | |
312 | */ | |
313 | const char *mnt_fs_get_optstr(mnt_fs *fs) | |
314 | { | |
315 | assert(fs); | |
316 | return fs ? fs->optstr : NULL; | |
317 | } | |
318 | ||
319 | /** | |
320 | * mnt_fs_set_optstr: | |
321 | * @fs: fstab/mtab/mountinfo entry | |
322 | * @optstr: options string | |
323 | * | |
324 | * Returns 0 on success or -1 in case of error. | |
325 | */ | |
326 | int mnt_fs_set_optstr(mnt_fs *fs, const char *optstr) | |
327 | { | |
328 | assert(fs); | |
329 | ||
330 | if (!fs || !optstr) | |
331 | return -1; | |
332 | free(fs->optstr); | |
333 | free(fs->fs_optstr); | |
334 | free(fs->vfs_optstr); | |
335 | fs->fs_optstr = fs->vfs_optstr = NULL; | |
336 | ||
337 | fs->optstr = strdup(optstr); | |
338 | ||
339 | return fs->optstr ? 0 : -1; | |
340 | } | |
341 | ||
342 | /** | |
343 | * mnt_fs_get_fs_optstr: | |
344 | * @fs: fstab/mtab/mountinfo entry pointer | |
345 | * | |
346 | * This function works for "mountinfo" files only. | |
347 | * | |
348 | * Returns pointer to superblock (fs-depend) mount option string or NULL. | |
349 | */ | |
350 | const char *mnt_fs_get_fs_optstr(mnt_fs *fs) | |
351 | { | |
352 | assert(fs); | |
353 | return fs ? fs->fs_optstr : NULL; | |
354 | } | |
355 | ||
356 | /** | |
357 | * mnt_fs_get_vfs_optstr: | |
358 | * @fs: fstab/mtab entry pointer | |
359 | * | |
360 | * This function works for "mountinfo" files only. | |
361 | * | |
362 | * Returns pointer to fs-independent (VFS) mount option string or NULL. | |
363 | */ | |
364 | const char *mnt_fs_get_vfs_optstr(mnt_fs *fs) | |
365 | { | |
366 | assert(fs); | |
367 | return fs ? fs->vfs_optstr : NULL; | |
368 | } | |
369 | ||
370 | ||
371 | /** | |
372 | * mnt_fs_get_freq: | |
373 | * @fs: fstab/mtab/mountinfo entry pointer | |
374 | * | |
375 | * Returns "dump frequency in days". | |
376 | */ | |
377 | int mnt_fs_get_freq(mnt_fs *fs) | |
378 | { | |
379 | assert(fs); | |
380 | return fs ? fs->freq : 0; | |
381 | } | |
382 | ||
383 | /** | |
384 | * mnt_fs_set_freq: | |
385 | * @fs: fstab/mtab entry pointer | |
386 | * @freq: dump frequency in days | |
387 | * | |
388 | * Returns 0 on success or -1 in case of error. | |
389 | */ | |
390 | int mnt_fs_set_freq(mnt_fs *fs, int freq) | |
391 | { | |
392 | assert(fs); | |
393 | if (!fs) | |
394 | return -1; | |
395 | fs->freq = freq; | |
396 | return 0; | |
397 | } | |
398 | ||
399 | /** | |
400 | * mnt_fs_get_passno: | |
401 | * @fs: fstab/mtab entry pointer | |
402 | * | |
403 | * Returns "pass number on parallel fsck". | |
404 | */ | |
405 | int mnt_fs_get_passno(mnt_fs *fs) | |
406 | { | |
407 | assert(fs); | |
408 | return fs ? fs->passno: 0; | |
409 | } | |
410 | ||
411 | /** | |
412 | * mnt_fs_set_passno: | |
413 | * @fs: fstab/mtab entry pointer | |
414 | * @passno: pass number | |
415 | * | |
416 | * Returns 0 on success or -1 in case of error. | |
417 | */ | |
418 | int mnt_fs_set_passno(mnt_fs *fs, int passno) | |
419 | { | |
420 | assert(fs); | |
421 | if (!fs) | |
422 | return -1; | |
423 | fs->passno = passno; | |
424 | return 0; | |
425 | } | |
426 | ||
427 | /** | |
428 | * mnt_fs_get_id: | |
429 | * @fs: /proc/self/mountinfo entry | |
430 | * | |
431 | * Returns: mount ID (unique identifier of the mount) or -1 if ID undefined | |
432 | * (for example if @fs is not mountinfo entry). | |
433 | */ | |
434 | int mnt_fs_get_id(mnt_fs *fs) | |
435 | { | |
436 | assert(fs); | |
437 | return fs ? fs->id : -1; | |
438 | } | |
439 | ||
440 | /** | |
441 | * mnt_fs_get_parent_id: | |
442 | * @fs: /proc/self/mountinfo entry | |
443 | * | |
444 | * Returns: parent mount ID or -1 if ID undefined (for example if @fs is not | |
445 | * mountinfo entry). | |
446 | */ | |
447 | int mnt_fs_get_parent_id(mnt_fs *fs) | |
448 | { | |
449 | assert(fs); | |
450 | return fs ? fs->parent : -1; | |
451 | } | |
452 | ||
453 | /** | |
454 | * mnt_fs_get_devno: | |
455 | * @fs: /proc/self/mountinfo | |
456 | * | |
457 | * Returns: value of st_dev for files on filesystem or 0 in case of error. | |
458 | */ | |
459 | dev_t mnt_fs_get_devno(mnt_fs *fs) | |
460 | { | |
461 | assert(fs); | |
462 | return fs ? fs->devno : 0; | |
463 | } | |
464 | ||
465 | /** | |
466 | * mnt_fs_get_option: | |
467 | * @fs: fstab/mtab/mountinfo entry pointer | |
468 | * @name: option name | |
469 | * @value: returns pointer to the begin of the value (e.g. name=VALUE) or NULL | |
470 | * @valsz: returns size of options value or 0 | |
471 | * | |
472 | * Returns 0 on success, 1 when not found the @name or -1 in case of error. | |
473 | */ | |
474 | int mnt_fs_get_option(mnt_fs *fs, const char *name, | |
475 | char **value, size_t *valsz) | |
476 | { | |
477 | char *optstr = (char *) mnt_fs_get_optstr(fs); | |
478 | return optstr ? mnt_optstr_get_option(optstr, name, value, valsz) : 1; | |
479 | } | |
480 | ||
481 | /** | |
482 | * mnt_fs_match_target: | |
483 | * @fs: filesystem | |
484 | * @target: mountpoint path | |
485 | * @cache: tags/paths cache or NULL | |
486 | * | |
487 | * Possible are three attempts: | |
488 | * 1) compare @target with @fs->target | |
489 | * 2) realpath(@target) with @fs->target | |
490 | * 3) realpath(@target) with realpath(@fs->target). | |
491 | * | |
492 | * The 2nd and 3rd attempts are not performed when @cache is NULL. | |
493 | * | |
494 | * Returns 1 if @fs target is equal to @target else 0. | |
495 | */ | |
496 | int mnt_fs_match_target(mnt_fs *fs, const char *target, mnt_cache *cache) | |
497 | { | |
498 | int rc = 0; | |
499 | ||
500 | if (!fs || !target || !fs->target) | |
501 | return 0; | |
502 | ||
503 | /* 1) native paths */ | |
504 | rc = !strcmp(target, fs->target); | |
505 | ||
506 | if (!rc && cache) { | |
507 | /* 2) - canonicalized and non-canonicalized */ | |
508 | char *cn = mnt_resolve_path(target, cache); | |
509 | rc = (cn && strcmp(cn, fs->target) == 0); | |
510 | ||
511 | /* 3) - canonicalized and canonicalized */ | |
512 | if (!rc && cn) { | |
513 | char *tcn = mnt_resolve_path(fs->target, cache); | |
514 | rc = (tcn && strcmp(cn, tcn) == 0); | |
515 | } | |
516 | } | |
517 | ||
518 | return rc; | |
519 | } | |
520 | ||
521 | /** | |
522 | * mnt_fs_match_source: | |
523 | * @fs: filesystem | |
524 | * @source: tag or path (device or so) | |
525 | * @cache: tags/paths cache or NULL | |
526 | * | |
527 | * Possible are four attempts: | |
528 | * 1) compare @source with @fs->source | |
529 | * 2) compare realpath(@source) with @fs->source | |
530 | * 3) compare realpath(@source) with realpath(@fs->source) | |
531 | * 4) compare realpath(@source) with evaluated tag from @fs->source | |
532 | * | |
533 | * The 2nd, 3rd and 4th attempts are not performed when @cache is NULL. The | |
534 | * 2nd and 3rd attempts are not performed if @fs->source is tag. | |
535 | * | |
536 | * Returns 1 if @fs source is equal to @source else 0. | |
537 | */ | |
538 | int mnt_fs_match_source(mnt_fs *fs, const char *source, mnt_cache *cache) | |
539 | { | |
540 | int rc = 0; | |
541 | char *cn; | |
542 | const char *src, *t, *v; | |
543 | ||
544 | if (!fs || !source || !fs->source) | |
545 | return 0; | |
546 | ||
547 | /* 1) native paths/tags */ | |
548 | rc = !strcmp(source, fs->source); | |
549 | if (rc || !cache) | |
550 | return rc; | |
551 | ||
552 | if (fs->flags & (MNT_FS_NET | MNT_FS_PSEUDO)) | |
553 | return 0; | |
554 | ||
555 | cn = mnt_resolve_spec(source, cache); | |
556 | if (!cn) | |
557 | return 0; | |
558 | ||
559 | /* 2) canonicalized and native */ | |
560 | src = mnt_fs_get_srcpath(fs); | |
561 | if (src) | |
562 | rc = !strcmp(cn, src); | |
563 | ||
564 | /* 3) canonicalized and canonicalized */ | |
565 | if (src && !rc) { | |
566 | src = mnt_resolve_path(src, cache); | |
567 | rc = !strcmp(cn, src); | |
568 | } | |
569 | if (src && !rc) | |
570 | /* fs->source is path and does not match with @source */ | |
571 | return 0; | |
572 | ||
573 | if (mnt_fs_get_tag(fs, &t, &v)) | |
574 | return 0; | |
575 | ||
576 | /* read @source's tags to the cache */ | |
577 | if (mnt_cache_read_tags(cache, cn) < 1) { | |
578 | if (errno == EACCES) { | |
579 | /* we don't have permissions to read TAGs from | |
580 | * @source, but can translate @fs tag to devname. | |
581 | * | |
582 | * (because libblkid uses udev symlinks and this is | |
583 | * accessible for non-root uses) | |
584 | */ | |
585 | char *x = mnt_resolve_tag(t, v, cache); | |
586 | if (x && !strcmp(x, cn)) | |
587 | return 1; | |
588 | } | |
589 | return 0; | |
590 | } | |
591 | ||
592 | /* 4) has the @source a tag that matches with tag from @fs ? */ | |
593 | if (!mnt_cache_device_has_tag(cache, cn, t, v)) | |
594 | return 0; | |
595 | ||
596 | return 1; | |
597 | } | |
598 | ||
599 | /** | |
600 | * mnt_fs_match_fstype: | |
601 | * @fs: filesystem | |
602 | * @types: filesystem name or comma delimited list of filesystems | |
603 | * | |
604 | * For more details see mnt_match_fstype(). | |
605 | * | |
606 | * Returns 1 if @fs type is matching to @types else 0. The function returns | |
607 | * 0 when types is NULL. | |
608 | */ | |
609 | int mnt_fs_match_fstype(mnt_fs *fs, const char *types) | |
610 | { | |
611 | return mnt_match_fstype(fs->fstype, types); | |
612 | } | |
613 | ||
614 | /** | |
615 | * mnt_fs_match_options: | |
616 | * @fs: filesystem | |
617 | * @options: comma delimited list of options (and nooptions) | |
618 | * | |
619 | * For more details see mnt_match_options(). | |
620 | * | |
621 | * Returns 1 if @fs type is matching to @options else 0. The function returns | |
622 | * 0 when types is NULL. | |
623 | */ | |
624 | int mnt_fs_match_options(mnt_fs *fs, const char *options) | |
625 | { | |
626 | return mnt_match_options(fs->optstr, options); | |
627 | } | |
628 | ||
629 | /* Unfortunately the classical Unix /etc/mtab and /etc/fstab | |
630 | do not handle directory names containing spaces. | |
631 | Here we mangle them, replacing a space by \040. | |
632 | What do other Unices do? */ | |
633 | ||
634 | static unsigned char need_escaping[] = { ' ', '\t', '\n', '\\' }; | |
635 | ||
636 | static char *mangle(const char *s) | |
637 | { | |
638 | char *ss, *sp; | |
639 | int n; | |
640 | ||
641 | n = strlen(s); | |
642 | ss = sp = malloc(4*n+1); | |
643 | if (!sp) | |
644 | return NULL; | |
645 | while(1) { | |
646 | for (n = 0; n < sizeof(need_escaping); n++) { | |
647 | if (*s == need_escaping[n]) { | |
648 | *sp++ = '\\'; | |
649 | *sp++ = '0' + ((*s & 0300) >> 6); | |
650 | *sp++ = '0' + ((*s & 070) >> 3); | |
651 | *sp++ = '0' + (*s & 07); | |
652 | goto next; | |
653 | } | |
654 | } | |
655 | *sp++ = *s; | |
656 | if (*s == 0) | |
657 | break; | |
658 | next: | |
659 | s++; | |
660 | } | |
661 | return ss; | |
662 | } | |
663 | ||
664 | /** | |
665 | * mnt_fprintf_line: | |
666 | * @f: FILE | |
667 | * @fmt: printf-like format string (see MNT_MFILE_PRINTFMT) | |
668 | * @source: (spec) device name or tag=value | |
669 | * @target: mountpoint | |
670 | * @fstype: filesystem type | |
671 | * @options: mount options | |
672 | * @freq: dump frequency in days | |
673 | * @passno: pass number on parallel fsck | |
674 | * | |
675 | * Returns return value from fprintf(). | |
676 | */ | |
677 | int mnt_fprintf_line( FILE *f, | |
678 | const char *fmt, | |
679 | const char *source, | |
680 | const char *target, | |
681 | const char *fstype, | |
682 | const char *options, | |
683 | int freq, | |
684 | int passno) | |
685 | { | |
686 | char *m1 = NULL, *m2 = NULL, *m3 = NULL, *m4 = NULL; | |
687 | int rc = -1; | |
688 | ||
689 | if (!f || !fmt || !source || !target || !fstype || !options) | |
690 | return -1; | |
691 | ||
692 | m1 = mangle(source); | |
693 | m2 = mangle(target); | |
694 | m3 = mangle(fstype); | |
695 | m4 = mangle(options); | |
696 | ||
697 | if (!m1 || !m2 || !m3 || !m4) | |
698 | goto done; | |
699 | ||
700 | rc = fprintf(f, fmt, m1, m2, m3, m4, freq, passno); | |
701 | done: | |
702 | free(m1); | |
703 | free(m2); | |
704 | free(m3); | |
705 | free(m4); | |
706 | ||
707 | return rc; | |
708 | } | |
709 | ||
710 | /** | |
711 | * mnt_fs_fprintf: | |
712 | * @fs: fstab/mtab/mountinfo entry | |
713 | * @f: FILE | |
714 | * @fmt: printf-like format string (see MNT_MFILE_PRINTFMT) | |
715 | * | |
716 | * Returns return value from fprintf(). | |
717 | */ | |
718 | int mnt_fs_fprintf(mnt_fs *fs, FILE *f, const char *fmt) | |
719 | { | |
720 | assert(fs); | |
721 | assert(f); | |
722 | assert(fmt); | |
723 | ||
724 | if (!fs || !f) | |
725 | return -1; | |
726 | ||
727 | return mnt_fprintf_line(f, fmt, | |
728 | mnt_fs_get_source(fs), | |
729 | mnt_fs_get_target(fs), | |
730 | mnt_fs_get_fstype(fs), | |
731 | mnt_fs_get_optstr(fs), | |
732 | mnt_fs_get_freq(fs), | |
733 | mnt_fs_get_passno(fs)); | |
734 | } | |
735 | ||
736 | /** | |
737 | * mnt_fs_print_debug | |
738 | * @fs: fstab/mtab/mountinfo entry | |
739 | * @file: output | |
740 | * | |
741 | * Returns 0 on success or -1 in case of error. | |
742 | */ | |
743 | int mnt_fs_print_debug(mnt_fs *fs, FILE *file) | |
744 | { | |
745 | if (!fs) | |
746 | return -1; | |
747 | fprintf(file, "------ fs: %p\n", fs); | |
748 | fprintf(file, "source: %s\n", mnt_fs_get_source(fs)); | |
749 | fprintf(file, "target: %s\n", mnt_fs_get_target(fs)); | |
750 | fprintf(file, "fstype: %s\n", mnt_fs_get_fstype(fs)); | |
751 | fprintf(file, "optstr: %s\n", mnt_fs_get_optstr(fs)); | |
752 | fprintf(file, "freq: %d\n", mnt_fs_get_freq(fs)); | |
753 | fprintf(file, "pass: %d\n", mnt_fs_get_passno(fs)); | |
754 | fprintf(file, "id: %d\n", mnt_fs_get_id(fs)); | |
755 | fprintf(file, "parent: %d\n", mnt_fs_get_parent_id(fs)); | |
756 | fprintf(file, "devno: %d:%d\n", major(mnt_fs_get_devno(fs)), | |
757 | minor(mnt_fs_get_devno(fs))); | |
758 | ||
759 | ||
760 | return 0; | |
761 | } |