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Commit | Line | Data |
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69b7e41e KZ |
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 | ||
192c6aad KZ |
8 | /** |
9 | * SECTION: utils | |
10 | * @title: Utils | |
11 | * @short_description: misc utils. | |
12 | */ | |
69b7e41e | 13 | #include <ctype.h> |
69b7e41e KZ |
14 | #include <fcntl.h> |
15 | #include <pwd.h> | |
a1e8af75 | 16 | #include <grp.h> |
a53cc4e0 | 17 | #include <blkid.h> |
69b7e41e | 18 | |
b49103ed | 19 | #include "strutils.h" |
0532ba1d | 20 | #include "pathnames.h" |
69b7e41e | 21 | #include "mountP.h" |
3c5e4ef8 | 22 | #include "mangle.h" |
0bb44be3 | 23 | #include "canonicalize.h" |
035507c8 | 24 | #include "env.h" |
b483debb | 25 | #include "match.h" |
934530c7 | 26 | #include "fileutils.h" |
df019e9b | 27 | #include "statfs_magic.h" |
69b7e41e | 28 | |
40b27864 KZ |
29 | int append_string(char **a, const char *b) |
30 | { | |
31 | size_t al, bl; | |
32 | char *tmp; | |
33 | ||
34 | assert(a); | |
35 | ||
36 | if (!b || !*b) | |
37 | return 0; | |
38 | if (!*a) { | |
39 | *a = strdup(b); | |
40 | return !*a ? -ENOMEM : 0; | |
41 | } | |
42 | ||
43 | al = strlen(*a); | |
c7616e4c | 44 | bl = strlen(b); |
40b27864 KZ |
45 | |
46 | tmp = realloc(*a, al + bl + 1); | |
47 | if (!tmp) | |
48 | return -ENOMEM; | |
49 | *a = tmp; | |
50 | memcpy((*a) + al, b, bl + 1); | |
51 | return 0; | |
52 | } | |
53 | ||
dad88cb3 | 54 | /* |
d58b3157 | 55 | * Return 1 if the file is not accessible or empty |
dad88cb3 KZ |
56 | */ |
57 | int is_file_empty(const char *name) | |
58 | { | |
59 | struct stat st; | |
60 | assert(name); | |
61 | ||
62 | return (stat(name, &st) != 0 || st.st_size == 0); | |
63 | } | |
64 | ||
2c6b25f0 KZ |
65 | int mnt_valid_tagname(const char *tagname) |
66 | { | |
67 | if (tagname && *tagname && ( | |
68 | strcmp("UUID", tagname) == 0 || | |
69 | strcmp("LABEL", tagname) == 0 || | |
70 | strcmp("PARTUUID", tagname) == 0 || | |
71 | strcmp("PARTLABEL", tagname) == 0)) | |
72 | return 1; | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
a53cc4e0 KZ |
77 | /** |
78 | * mnt_tag_is_valid: | |
79 | * @tag: NAME=value string | |
80 | * | |
81 | * Returns: 1 if the @tag is parsable and tag NAME= is supported by libmount, or 0. | |
82 | */ | |
83 | int mnt_tag_is_valid(const char *tag) | |
84 | { | |
85 | char *t = NULL; | |
86 | int rc = tag && blkid_parse_tag_string(tag, &t, NULL) == 0 | |
87 | && mnt_valid_tagname(t); | |
88 | ||
89 | free(t); | |
90 | return rc; | |
91 | } | |
92 | ||
fd1eb7a7 KZ |
93 | int mnt_parse_offset(const char *str, size_t len, uintmax_t *res) |
94 | { | |
95 | char *p; | |
96 | int rc = 0; | |
97 | ||
0208ae2e | 98 | if (!str || !*str) |
fd1eb7a7 KZ |
99 | return -EINVAL; |
100 | ||
101 | p = strndup(str, len); | |
102 | if (!p) | |
103 | return -errno; | |
104 | ||
105 | if (strtosize(p, res)) | |
106 | rc = -EINVAL; | |
107 | free(p); | |
108 | return rc; | |
109 | } | |
110 | ||
7383ebce DR |
111 | /* used as a callback by bsearch in mnt_fstype_is_pseudofs() */ |
112 | static int fstype_cmp(const void *v1, const void *v2) | |
113 | { | |
114 | const char *s1 = *(const char **)v1; | |
115 | const char *s2 = *(const char **)v2; | |
116 | ||
117 | return strcmp(s1, s2); | |
118 | } | |
119 | ||
61073773 | 120 | /* |
d58b3157 OO |
121 | * Note that the @target has to be an absolute path (so at least "/"). The |
122 | * @filename returns an allocated buffer with the last path component, for example: | |
61073773 KZ |
123 | * |
124 | * mnt_chdir_to_parent("/mnt/test", &buf) ==> chdir("/mnt"), buf="test" | |
66bb8267 KZ |
125 | */ |
126 | int mnt_chdir_to_parent(const char *target, char **filename) | |
127 | { | |
61073773 | 128 | char *buf, *parent, *last = NULL; |
66bb8267 KZ |
129 | char cwd[PATH_MAX]; |
130 | int rc = -EINVAL; | |
131 | ||
132 | if (!target || *target != '/') | |
133 | return -EINVAL; | |
134 | ||
83a78332 | 135 | DBG(UTILS, ul_debug("moving to %s parent", target)); |
61073773 KZ |
136 | |
137 | buf = strdup(target); | |
138 | if (!buf) | |
66bb8267 KZ |
139 | return -ENOMEM; |
140 | ||
61073773 KZ |
141 | if (*(buf + 1) != '\0') { |
142 | last = stripoff_last_component(buf); | |
66bb8267 KZ |
143 | if (!last) |
144 | goto err; | |
145 | } | |
66bb8267 | 146 | |
61073773 KZ |
147 | parent = buf && *buf ? buf : "/"; |
148 | ||
149 | if (chdir(parent) == -1) { | |
83a78332 | 150 | DBG(UTILS, ul_debug("failed to chdir to %s: %m", parent)); |
66bb8267 KZ |
151 | rc = -errno; |
152 | goto err; | |
153 | } | |
154 | if (!getcwd(cwd, sizeof(cwd))) { | |
83a78332 | 155 | DBG(UTILS, ul_debug("failed to obtain current directory: %m")); |
66bb8267 KZ |
156 | rc = -errno; |
157 | goto err; | |
158 | } | |
61073773 | 159 | if (strcmp(cwd, parent) != 0) { |
83a78332 | 160 | DBG(UTILS, ul_debug( |
61073773 | 161 | "unexpected chdir (expected=%s, cwd=%s)", parent, cwd)); |
66bb8267 KZ |
162 | goto err; |
163 | } | |
164 | ||
83a78332 | 165 | DBG(CXT, ul_debug( |
61073773 KZ |
166 | "current directory moved to %s [last_component='%s']", |
167 | parent, last)); | |
66bb8267 | 168 | |
ba2bdf41 KZ |
169 | if (filename) { |
170 | *filename = buf; | |
66bb8267 | 171 | |
ba2bdf41 KZ |
172 | if (!last || !*last) |
173 | memcpy(*filename, ".", 2); | |
174 | else | |
4e9f59d1 | 175 | memmove(*filename, last, strlen(last) + 1); |
cfa44747 KZ |
176 | } else |
177 | free(buf); | |
66bb8267 KZ |
178 | return 0; |
179 | err: | |
61073773 | 180 | free(buf); |
66bb8267 KZ |
181 | return rc; |
182 | } | |
183 | ||
f9906424 | 184 | /* |
d58b3157 | 185 | * Check if @path is on a read-only filesystem independently of file permissions. |
f9906424 KZ |
186 | */ |
187 | int mnt_is_readonly(const char *path) | |
188 | { | |
189 | if (access(path, W_OK) == 0) | |
190 | return 0; | |
191 | if (errno == EROFS) | |
192 | return 1; | |
193 | if (errno != EACCES) | |
194 | return 0; | |
195 | ||
473c5fb8 | 196 | #ifdef HAVE_UTIMENSAT |
f9906424 KZ |
197 | /* |
198 | * access(2) returns EACCES on read-only FS: | |
199 | * | |
200 | * - for set-uid application if one component of the path is not | |
201 | * accessible for the current rUID. (Note that euidaccess(2) does not | |
202 | * check for EROFS at all). | |
203 | * | |
d58b3157 | 204 | * - for a read-write filesystem with a read-only VFS node (aka -o remount,ro,bind) |
f9906424 KZ |
205 | */ |
206 | { | |
207 | struct timespec times[2]; | |
208 | ||
209 | times[0].tv_nsec = UTIME_NOW; /* atime */ | |
210 | times[1].tv_nsec = UTIME_OMIT; /* mtime */ | |
211 | ||
212 | if (utimensat(AT_FDCWD, path, times, 0) == -1) | |
213 | return errno == EROFS; | |
214 | } | |
215 | #endif | |
216 | return 0; | |
217 | } | |
218 | ||
3c5e4ef8 KZ |
219 | /** |
220 | * mnt_mangle: | |
221 | * @str: string | |
222 | * | |
223 | * Encode @str to be compatible with fstab/mtab | |
224 | * | |
d58b3157 | 225 | * Returns: newly allocated string or NULL in case of error. |
3c5e4ef8 KZ |
226 | */ |
227 | char *mnt_mangle(const char *str) | |
228 | { | |
229 | return mangle(str); | |
230 | } | |
231 | ||
232 | /** | |
233 | * mnt_unmangle: | |
234 | * @str: string | |
235 | * | |
236 | * Decode @str from fstab/mtab | |
237 | * | |
d58b3157 | 238 | * Returns: newly allocated string or NULL in case of error. |
3c5e4ef8 KZ |
239 | */ |
240 | char *mnt_unmangle(const char *str) | |
241 | { | |
dd369652 | 242 | return unmangle(str, NULL); |
3c5e4ef8 KZ |
243 | } |
244 | ||
69b7e41e KZ |
245 | /** |
246 | * mnt_fstype_is_pseudofs: | |
247 | * @type: filesystem name | |
248 | * | |
249 | * Returns: 1 for filesystems like proc, sysfs, ... or 0. | |
250 | */ | |
251 | int mnt_fstype_is_pseudofs(const char *type) | |
252 | { | |
7383ebce DR |
253 | /* This array must remain sorted when adding new fstypes */ |
254 | static const char *pseudofs[] = { | |
255 | "anon_inodefs", | |
256 | "autofs", | |
257 | "bdev", | |
258 | "binfmt_misc", | |
259 | "cgroup", | |
260 | "configfs", | |
261 | "cpuset", | |
262 | "debugfs", | |
263 | "devfs", | |
264 | "devpts", | |
265 | "devtmpfs", | |
266 | "dlmfs", | |
84ceaf7a | 267 | "efivarfs", |
84ceaf7a | 268 | "fuse.gvfs-fuse-daemon", |
462a5703 | 269 | "fusectl", |
7383ebce DR |
270 | "hugetlbfs", |
271 | "mqueue", | |
272 | "nfsd", | |
273 | "none", | |
209fd7a7 | 274 | "overlay", |
7383ebce DR |
275 | "pipefs", |
276 | "proc", | |
277 | "pstore", | |
278 | "ramfs", | |
279 | "rootfs", | |
280 | "rpc_pipefs", | |
281 | "securityfs", | |
282 | "sockfs", | |
283 | "spufs", | |
284 | "sysfs", | |
285 | "tmpfs" | |
286 | }; | |
287 | ||
4569bbea KZ |
288 | assert(type); |
289 | ||
7383ebce DR |
290 | return !(bsearch(&type, pseudofs, ARRAY_SIZE(pseudofs), |
291 | sizeof(char*), fstype_cmp) == NULL); | |
69b7e41e KZ |
292 | } |
293 | ||
294 | /** | |
295 | * mnt_fstype_is_netfs: | |
296 | * @type: filesystem name | |
297 | * | |
298 | * Returns: 1 for filesystems like cifs, nfs, ... or 0. | |
299 | */ | |
300 | int mnt_fstype_is_netfs(const char *type) | |
301 | { | |
c59cf20c | 302 | if (strcmp(type, "cifs") == 0 || |
69b7e41e | 303 | strcmp(type, "smbfs") == 0 || |
c59cf20c KZ |
304 | strncmp(type,"nfs", 3) == 0 || |
305 | strcmp(type, "afs") == 0 || | |
306 | strcmp(type, "ncpfs") == 0 || | |
307 | strncmp(type,"9p", 2) == 0) | |
69b7e41e KZ |
308 | return 1; |
309 | return 0; | |
310 | } | |
311 | ||
6a52473e KZ |
312 | const char *mnt_statfs_get_fstype(struct statfs *vfs) |
313 | { | |
314 | assert(vfs); | |
315 | ||
316 | switch (vfs->f_type) { | |
df019e9b KZ |
317 | case STATFS_ADFS_MAGIC: return "adfs"; |
318 | case STATFS_AFFS_MAGIC: return "affs"; | |
319 | case STATFS_AFS_MAGIC: return "afs"; | |
320 | case STATFS_AUTOFS_MAGIC: return "autofs"; | |
321 | case STATFS_BDEVFS_MAGIC: return "bdev"; | |
322 | case STATFS_BEFS_MAGIC: return "befs"; | |
323 | case STATFS_BFS_MAGIC: return "befs"; | |
324 | case STATFS_BINFMTFS_MAGIC: return "binfmt_misc"; | |
325 | case STATFS_BTRFS_MAGIC: return "btrfs"; | |
326 | case STATFS_CEPH_MAGIC: return "ceph"; | |
327 | case STATFS_CGROUP_MAGIC: return "cgroup"; | |
328 | case STATFS_CIFS_MAGIC: return "cifs"; | |
329 | case STATFS_CODA_MAGIC: return "coda"; | |
330 | case STATFS_CONFIGFS_MAGIC: return "configfs"; | |
331 | case STATFS_CRAMFS_MAGIC: return "cramfs"; | |
332 | case STATFS_DEBUGFS_MAGIC: return "debugfs"; | |
333 | case STATFS_DEVPTS_MAGIC: return "devpts"; | |
334 | case STATFS_ECRYPTFS_MAGIC: return "ecryptfs"; | |
335 | case STATFS_EFIVARFS_MAGIC: return "efivarfs"; | |
336 | case STATFS_EFS_MAGIC: return "efs"; | |
337 | case STATFS_EXOFS_MAGIC: return "exofs"; | |
338 | case STATFS_EXT4_MAGIC: return "ext4"; /* all extN use the same magic */ | |
339 | case STATFS_F2FS_MAGIC: return "f2fs"; | |
340 | case STATFS_FUSE_MAGIC: return "fuse"; | |
341 | case STATFS_FUTEXFS_MAGIC: return "futexfs"; | |
342 | case STATFS_GFS2_MAGIC: return "gfs2"; | |
343 | case STATFS_HFSPLUS_MAGIC: return "hfsplus"; | |
344 | case STATFS_HOSTFS_MAGIC: return "hostfs"; | |
345 | case STATFS_HPFS_MAGIC: return "hpfs"; | |
346 | case STATFS_HPPFS_MAGIC: return "hppfs"; | |
347 | case STATFS_HUGETLBFS_MAGIC: return "hugetlbfs"; | |
348 | case STATFS_ISOFS_MAGIC: return "iso9660"; | |
349 | case STATFS_JFFS2_MAGIC: return "jffs2"; | |
350 | case STATFS_JFS_MAGIC: return "jfs"; | |
351 | case STATFS_LOGFS_MAGIC: return "logfs"; | |
352 | case STATFS_MINIX2_MAGIC: | |
353 | case STATFS_MINIX2_MAGIC2: | |
354 | case STATFS_MINIX3_MAGIC: | |
355 | case STATFS_MINIX_MAGIC: | |
356 | case STATFS_MINIX_MAGIC2: return "minix"; | |
357 | case STATFS_MQUEUE_MAGIC: return "mqueue"; | |
358 | case STATFS_MSDOS_MAGIC: return "vfat"; | |
359 | case STATFS_NCP_MAGIC: return "ncp"; | |
360 | case STATFS_NFS_MAGIC: return "nfs"; | |
361 | case STATFS_NILFS_MAGIC: return "nilfs2"; | |
362 | case STATFS_NTFS_MAGIC: return "ntfs"; | |
363 | case STATFS_OCFS2_MAGIC: return "ocfs2"; | |
364 | case STATFS_OMFS_MAGIC: return "omfs"; | |
365 | case STATFS_OPENPROMFS_MAGIC: return "openpromfs"; | |
366 | case STATFS_PIPEFS_MAGIC: return "pipefs"; | |
367 | case STATFS_PROC_MAGIC: return "proc"; | |
368 | case STATFS_PSTOREFS_MAGIC: return "pstore"; | |
369 | case STATFS_QNX4_MAGIC: return "qnx4"; | |
370 | case STATFS_QNX6_MAGIC: return "qnx6"; | |
371 | case STATFS_RAMFS_MAGIC: return "ramfs"; | |
372 | case STATFS_REISERFS_MAGIC: return "reiser4"; | |
373 | case STATFS_ROMFS_MAGIC: return "romfs"; | |
374 | case STATFS_SECURITYFS_MAGIC: return "securityfs"; | |
375 | case STATFS_SELINUXFS_MAGIC: return "selinuxfs"; | |
376 | case STATFS_SMACKFS_MAGIC: return "smackfs"; | |
377 | case STATFS_SMB_MAGIC: return "smb"; | |
378 | case STATFS_SOCKFS_MAGIC: return "sockfs"; | |
379 | case STATFS_SQUASHFS_MAGIC: return "squashfs"; | |
380 | case STATFS_SYSFS_MAGIC: return "sysfs"; | |
381 | case STATFS_TMPFS_MAGIC: return "tmpfs"; | |
382 | case STATFS_UBIFS_MAGIC: return "ubifs"; | |
383 | case STATFS_UDF_MAGIC: return "udf"; | |
384 | case STATFS_UFS2_MAGIC: | |
385 | case STATFS_UFS_MAGIC: return "ufs"; | |
386 | case STATFS_V9FS_MAGIC: return "9p"; | |
387 | case STATFS_VXFS_MAGIC: return "vxfs"; | |
388 | case STATFS_XENFS_MAGIC: return "xenfs"; | |
389 | case STATFS_XFS_MAGIC: return "xfs"; | |
6a52473e KZ |
390 | default: |
391 | break; | |
392 | } | |
393 | ||
394 | return NULL; | |
395 | } | |
396 | ||
397 | ||
abc9c0f7 KZ |
398 | /** |
399 | * mnt_match_fstype: | |
400 | * @type: filesystem type | |
6ad929bb | 401 | * @pattern: filesystem name or comma delimited list of names |
abc9c0f7 | 402 | * |
d58b3157 | 403 | * The @pattern list of filesystems can be prefixed with a global |
abc9c0f7 | 404 | * "no" prefix to invert matching of the whole list. The "no" could |
6ad929bb | 405 | * also be used for individual items in the @pattern list. So, |
3d735589 | 406 | * "nofoo,bar" has the same meaning as "nofoo,nobar". |
abc9c0f7 | 407 | * |
3d735589 KZ |
408 | * "bar" : "nofoo,bar" -> False (global "no" prefix) |
409 | * | |
410 | * "bar" : "foo,bar" -> True | |
abc9c0f7 | 411 | * |
abc9c0f7 KZ |
412 | * "bar" : "foo,nobar" -> False |
413 | * | |
414 | * Returns: 1 if type is matching, else 0. This function also returns | |
415 | * 0 if @pattern is NULL and @type is non-NULL. | |
416 | */ | |
417 | int mnt_match_fstype(const char *type, const char *pattern) | |
418 | { | |
12089155 | 419 | return match_fstype(type, pattern); |
abc9c0f7 KZ |
420 | } |
421 | ||
422 | ||
423 | /* Returns 1 if needle found or noneedle not found in haystack | |
424 | * Otherwise returns 0 | |
425 | */ | |
426 | static int check_option(const char *haystack, size_t len, | |
427 | const char *needle, size_t needle_len) | |
428 | { | |
429 | const char *p; | |
430 | int no = 0; | |
431 | ||
ede8a60e KZ |
432 | if (needle_len >= 1 && *needle == '+') { |
433 | needle++; | |
434 | needle_len--; | |
435 | } else if (needle_len >= 2 && !strncmp(needle, "no", 2)) { | |
abc9c0f7 KZ |
436 | no = 1; |
437 | needle += 2; | |
438 | needle_len -= 2; | |
439 | } | |
440 | ||
441 | for (p = haystack; p && p < haystack + len; p++) { | |
442 | char *sep = strchr(p, ','); | |
7fc6d2b8 KZ |
443 | size_t plen = sep ? (size_t) (sep - p) : |
444 | len - (p - haystack); | |
abc9c0f7 KZ |
445 | |
446 | if (plen == needle_len) { | |
447 | if (!strncmp(p, needle, plen)) | |
448 | return !no; /* foo or nofoo was found */ | |
449 | } | |
450 | p += plen; | |
451 | } | |
452 | ||
453 | return no; /* foo or nofoo was not found */ | |
454 | } | |
455 | ||
456 | /** | |
457 | * mnt_match_options: | |
458 | * @optstr: options string | |
6ad929bb | 459 | * @pattern: comma delimited list of options |
abc9c0f7 | 460 | * |
d58b3157 | 461 | * The "no" could be used for individual items in the @options list. The "no" |
6ad929bb | 462 | * prefix does not have a global meaning. |
abc9c0f7 KZ |
463 | * |
464 | * Unlike fs type matching, nonetdev,user and nonetdev,nouser have | |
465 | * DIFFERENT meanings; each option is matched explicitly as specified. | |
466 | * | |
d58b3157 OO |
467 | * The "no" prefix interpretation could be disabled by the "+" prefix, for example |
468 | * "+noauto" matches if @optstr literally contains the "noauto" string. | |
ede8a60e | 469 | * |
3d735589 KZ |
470 | * "xxx,yyy,zzz" : "nozzz" -> False |
471 | * | |
472 | * "xxx,yyy,zzz" : "xxx,noeee" -> True | |
abc9c0f7 | 473 | * |
ede8a60e KZ |
474 | * "bar,zzz" : "nofoo" -> True |
475 | * | |
476 | * "nofoo,bar" : "+nofoo" -> True | |
477 | * | |
478 | * "bar,zzz" : "+nofoo" -> False | |
479 | * | |
480 | * | |
abc9c0f7 KZ |
481 | * Returns: 1 if pattern is matching, else 0. This function also returns 0 |
482 | * if @pattern is NULL and @optstr is non-NULL. | |
483 | */ | |
484 | int mnt_match_options(const char *optstr, const char *pattern) | |
485 | { | |
486 | const char *p; | |
487 | size_t len, optstr_len = 0; | |
488 | ||
489 | if (!pattern && !optstr) | |
490 | return 1; | |
491 | if (!pattern) | |
492 | return 0; | |
493 | ||
494 | len = strlen(pattern); | |
495 | if (optstr) | |
496 | optstr_len = strlen(optstr); | |
497 | ||
498 | for (p = pattern; p < pattern + len; p++) { | |
499 | char *sep = strchr(p, ','); | |
7fc6d2b8 KZ |
500 | size_t plen = sep ? (size_t) (sep - p) : |
501 | len - (p - pattern); | |
abc9c0f7 KZ |
502 | |
503 | if (!plen) | |
504 | continue; /* if two ',' appear in a row */ | |
505 | ||
506 | if (!check_option(optstr, optstr_len, p, plen)) | |
507 | return 0; /* any match failure means failure */ | |
508 | ||
509 | p += plen; | |
510 | } | |
511 | ||
512 | /* no match failures in list means success */ | |
513 | return 1; | |
514 | } | |
515 | ||
97e23b5e KZ |
516 | void mnt_free_filesystems(char **filesystems) |
517 | { | |
518 | char **p; | |
519 | ||
520 | if (!filesystems) | |
521 | return; | |
522 | for (p = filesystems; *p; p++) | |
523 | free(*p); | |
524 | free(filesystems); | |
525 | } | |
526 | ||
527 | static int add_filesystem(char ***filesystems, char *name) | |
528 | { | |
529 | int n = 0; | |
530 | ||
531 | assert(filesystems); | |
532 | assert(name); | |
533 | ||
534 | if (*filesystems) { | |
535 | char **p; | |
536 | for (n = 0, p = *filesystems; *p; p++, n++) { | |
537 | if (strcmp(*p, name) == 0) | |
538 | return 0; | |
539 | } | |
540 | } | |
541 | ||
542 | #define MYCHUNK 16 | |
543 | ||
544 | if (n == 0 || !((n + 1) % MYCHUNK)) { | |
545 | size_t items = ((n + 1 + MYCHUNK) / MYCHUNK) * MYCHUNK; | |
546 | char **x = realloc(*filesystems, items * sizeof(char *)); | |
547 | ||
548 | if (!x) | |
549 | goto err; | |
550 | *filesystems = x; | |
551 | } | |
552 | name = strdup(name); | |
97e23b5e KZ |
553 | (*filesystems)[n] = name; |
554 | (*filesystems)[n + 1] = NULL; | |
6b9784b4 KZ |
555 | if (!name) |
556 | goto err; | |
97e23b5e KZ |
557 | return 0; |
558 | err: | |
559 | mnt_free_filesystems(*filesystems); | |
560 | return -ENOMEM; | |
561 | } | |
562 | ||
563 | static int get_filesystems(const char *filename, char ***filesystems, const char *pattern) | |
564 | { | |
4f69189f | 565 | int rc = 0; |
97e23b5e | 566 | FILE *f; |
e3c27186 | 567 | char line[129]; |
97e23b5e | 568 | |
1eb8539d | 569 | f = fopen(filename, "r" UL_CLOEXECSTR); |
97e23b5e | 570 | if (!f) |
ec8121b1 KZ |
571 | return 1; |
572 | ||
83a78332 | 573 | DBG(UTILS, ul_debug("reading filesystems list from: %s", filename)); |
97e23b5e KZ |
574 | |
575 | while (fgets(line, sizeof(line), f)) { | |
576 | char name[sizeof(line)]; | |
97e23b5e KZ |
577 | |
578 | if (*line == '#' || strncmp(line, "nodev", 5) == 0) | |
579 | continue; | |
580 | if (sscanf(line, " %128[^\n ]\n", name) != 1) | |
581 | continue; | |
ec8121b1 KZ |
582 | if (strcmp(name, "*") == 0) { |
583 | rc = 1; | |
584 | break; /* end of the /etc/filesystems */ | |
585 | } | |
97e23b5e KZ |
586 | if (pattern && !mnt_match_fstype(name, pattern)) |
587 | continue; | |
588 | rc = add_filesystem(filesystems, name); | |
589 | if (rc) | |
4f69189f | 590 | break; |
97e23b5e | 591 | } |
4f69189f KZ |
592 | |
593 | fclose(f); | |
594 | return rc; | |
97e23b5e KZ |
595 | } |
596 | ||
3de77c21 | 597 | /* |
d58b3157 | 598 | * Always check the @filesystems pointer! |
ec8121b1 KZ |
599 | * |
600 | * man mount: | |
601 | * | |
602 | * ...mount will try to read the file /etc/filesystems, or, if that does not | |
603 | * exist, /proc/filesystems. All of the filesystem types listed there will | |
604 | * be tried, except for those that are labeled "nodev" (e.g., devpts, | |
605 | * proc and nfs). If /etc/filesystems ends in a line with a single * only, | |
123ddced | 606 | * mount will read /proc/filesystems afterwards. |
3de77c21 | 607 | */ |
97e23b5e KZ |
608 | int mnt_get_filesystems(char ***filesystems, const char *pattern) |
609 | { | |
610 | int rc; | |
611 | ||
612 | if (!filesystems) | |
613 | return -EINVAL; | |
ec8121b1 | 614 | |
97e23b5e KZ |
615 | *filesystems = NULL; |
616 | ||
617 | rc = get_filesystems(_PATH_FILESYSTEMS, filesystems, pattern); | |
ec8121b1 | 618 | if (rc != 1) |
97e23b5e | 619 | return rc; |
ec8121b1 KZ |
620 | |
621 | rc = get_filesystems(_PATH_PROC_FILESYSTEMS, filesystems, pattern); | |
622 | if (rc == 1 && *filesystems) | |
d58b3157 | 623 | rc = 0; /* /proc/filesystems not found */ |
ec8121b1 KZ |
624 | |
625 | return rc; | |
97e23b5e KZ |
626 | } |
627 | ||
2af0a839 KZ |
628 | static size_t get_pw_record_size(void) |
629 | { | |
630 | #ifdef _SC_GETPW_R_SIZE_MAX | |
631 | long sz = sysconf(_SC_GETPW_R_SIZE_MAX); | |
632 | if (sz > 0) | |
633 | return sz; | |
634 | #endif | |
635 | return 16384; | |
636 | } | |
637 | ||
69b7e41e | 638 | /* |
d58b3157 | 639 | * Returns an allocated string with username or NULL. |
69b7e41e KZ |
640 | */ |
641 | char *mnt_get_username(const uid_t uid) | |
642 | { | |
643 | struct passwd pwd; | |
644 | struct passwd *res; | |
2af0a839 | 645 | size_t sz = get_pw_record_size(); |
69b7e41e KZ |
646 | char *buf, *username = NULL; |
647 | ||
69b7e41e KZ |
648 | buf = malloc(sz); |
649 | if (!buf) | |
650 | return NULL; | |
651 | ||
652 | if (!getpwuid_r(uid, &pwd, buf, sz, &res) && res) | |
653 | username = strdup(pwd.pw_name); | |
654 | ||
655 | free(buf); | |
656 | return username; | |
657 | } | |
abc9c0f7 | 658 | |
a1e8af75 KZ |
659 | int mnt_get_uid(const char *username, uid_t *uid) |
660 | { | |
188dc15a | 661 | int rc = -1; |
a1e8af75 KZ |
662 | struct passwd pwd; |
663 | struct passwd *pw; | |
2af0a839 | 664 | size_t sz = get_pw_record_size(); |
a1e8af75 KZ |
665 | char *buf; |
666 | ||
188dc15a KZ |
667 | if (!username || !uid) |
668 | return -EINVAL; | |
b47b7b3a | 669 | |
a1e8af75 KZ |
670 | buf = malloc(sz); |
671 | if (!buf) | |
672 | return -ENOMEM; | |
673 | ||
188dc15a | 674 | if (!getpwnam_r(username, &pwd, buf, sz, &pw) && pw) { |
a1e8af75 | 675 | *uid= pw->pw_uid; |
188dc15a KZ |
676 | rc = 0; |
677 | } else { | |
83a78332 | 678 | DBG(UTILS, ul_debug( |
188dc15a | 679 | "cannot convert '%s' username to UID", username)); |
61f5ff6c | 680 | rc = errno ? -errno : -EINVAL; |
188dc15a | 681 | } |
a1e8af75 KZ |
682 | |
683 | free(buf); | |
188dc15a | 684 | return rc; |
a1e8af75 KZ |
685 | } |
686 | ||
687 | int mnt_get_gid(const char *groupname, gid_t *gid) | |
688 | { | |
188dc15a | 689 | int rc = -1; |
a1e8af75 KZ |
690 | struct group grp; |
691 | struct group *gr; | |
2af0a839 | 692 | size_t sz = get_pw_record_size(); |
a1e8af75 KZ |
693 | char *buf; |
694 | ||
188dc15a KZ |
695 | if (!groupname || !gid) |
696 | return -EINVAL; | |
b47b7b3a | 697 | |
a1e8af75 KZ |
698 | buf = malloc(sz); |
699 | if (!buf) | |
700 | return -ENOMEM; | |
701 | ||
188dc15a | 702 | if (!getgrnam_r(groupname, &grp, buf, sz, &gr) && gr) { |
a1e8af75 | 703 | *gid= gr->gr_gid; |
188dc15a KZ |
704 | rc = 0; |
705 | } else { | |
83a78332 | 706 | DBG(UTILS, ul_debug( |
188dc15a | 707 | "cannot convert '%s' groupname to GID", groupname)); |
61f5ff6c | 708 | rc = errno ? -errno : -EINVAL; |
188dc15a | 709 | } |
a1e8af75 KZ |
710 | |
711 | free(buf); | |
188dc15a KZ |
712 | return rc; |
713 | } | |
714 | ||
715 | int mnt_in_group(gid_t gid) | |
716 | { | |
717 | int rc = 0, n, i; | |
718 | gid_t *grps = NULL; | |
719 | ||
720 | if (getgid() == gid) | |
721 | return 1; | |
722 | ||
723 | n = getgroups(0, NULL); | |
724 | if (n <= 0) | |
725 | goto done; | |
726 | ||
727 | grps = malloc(n * sizeof(*grps)); | |
728 | if (!grps) | |
729 | goto done; | |
730 | ||
731 | if (getgroups(n, grps) == n) { | |
732 | for (i = 0; i < n; i++) { | |
733 | if (grps[i] == gid) { | |
734 | rc = 1; | |
735 | break; | |
736 | } | |
737 | } | |
738 | } | |
739 | done: | |
740 | free(grps); | |
741 | return rc; | |
a1e8af75 KZ |
742 | } |
743 | ||
1d0cd73f KZ |
744 | static int try_write(const char *filename) |
745 | { | |
746 | int fd; | |
747 | ||
748 | if (!filename) | |
749 | return -EINVAL; | |
750 | ||
d39c2b43 KZ |
751 | fd = open(filename, O_RDWR|O_CREAT|O_CLOEXEC, |
752 | S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH); | |
1d0cd73f KZ |
753 | if (fd >= 0) { |
754 | close(fd); | |
755 | return 0; | |
756 | } | |
757 | return -errno; | |
758 | } | |
759 | ||
760 | /** | |
761 | * mnt_has_regular_mtab: | |
762 | * @mtab: returns path to mtab | |
763 | * @writable: returns 1 if the file is writable | |
764 | * | |
d58b3157 OO |
765 | * If the file does not exist and @writable argument is not NULL, then it will |
766 | * try to create the file. | |
1d0cd73f | 767 | * |
6ad929bb | 768 | * Returns: 1 if /etc/mtab is a regular file, and 0 in case of error (check |
1d0cd73f | 769 | * errno for more details). |
0532ba1d | 770 | */ |
1d0cd73f | 771 | int mnt_has_regular_mtab(const char **mtab, int *writable) |
0532ba1d KZ |
772 | { |
773 | struct stat st; | |
70bf97ae | 774 | int rc; |
1d0cd73f | 775 | const char *filename = mtab && *mtab ? *mtab : mnt_get_mtab_path(); |
0532ba1d | 776 | |
7c118af7 KZ |
777 | if (writable) |
778 | *writable = 0; | |
70bf97ae | 779 | if (mtab && !*mtab) |
1d0cd73f KZ |
780 | *mtab = filename; |
781 | ||
83a78332 | 782 | DBG(UTILS, ul_debug("mtab: %s", filename)); |
70bf97ae | 783 | |
1d0cd73f KZ |
784 | rc = lstat(filename, &st); |
785 | ||
786 | if (rc == 0) { | |
d58b3157 | 787 | /* file exists */ |
1d0cd73f KZ |
788 | if (S_ISREG(st.st_mode)) { |
789 | if (writable) | |
790 | *writable = !try_write(filename); | |
791 | return 1; | |
792 | } | |
7c118af7 | 793 | goto done; |
1d0cd73f KZ |
794 | } |
795 | ||
796 | /* try to create the file */ | |
70bf97ae | 797 | if (writable) { |
1d0cd73f | 798 | *writable = !try_write(filename); |
7c118af7 KZ |
799 | if (*writable) |
800 | return 1; | |
1d0cd73f KZ |
801 | } |
802 | ||
7c118af7 | 803 | done: |
83a78332 | 804 | DBG(UTILS, ul_debug("%s: irregular/non-writable", filename)); |
1d0cd73f KZ |
805 | return 0; |
806 | } | |
7c118af7 | 807 | |
77417bc0 KZ |
808 | /* |
809 | * Don't export this to libmount API -- utab is private library stuff. | |
1d0cd73f | 810 | * |
d58b3157 | 811 | * If the file does not exist and @writable argument is not NULL, then it will |
a362ae60 | 812 | * try to create the directory (e.g. /run/mount) and the file. |
1d0cd73f | 813 | * |
a362ae60 | 814 | * Returns: 1 if utab is a regular file, and 0 in case of |
6f5788c5 | 815 | * error (check errno for more details). |
1d0cd73f | 816 | */ |
1d0cd73f KZ |
817 | int mnt_has_regular_utab(const char **utab, int *writable) |
818 | { | |
819 | struct stat st; | |
820 | int rc; | |
821 | const char *filename = utab && *utab ? *utab : mnt_get_utab_path(); | |
822 | ||
7c118af7 KZ |
823 | if (writable) |
824 | *writable = 0; | |
1d0cd73f KZ |
825 | if (utab && !*utab) |
826 | *utab = filename; | |
827 | ||
83a78332 | 828 | DBG(UTILS, ul_debug("utab: %s", filename)); |
1d0cd73f KZ |
829 | |
830 | rc = lstat(filename, &st); | |
831 | ||
832 | if (rc == 0) { | |
d58b3157 | 833 | /* file exists */ |
1d0cd73f KZ |
834 | if (S_ISREG(st.st_mode)) { |
835 | if (writable) | |
7c118af7 | 836 | *writable = !try_write(filename); |
1d0cd73f | 837 | return 1; |
70bf97ae | 838 | } |
d58b3157 | 839 | goto done; /* it's not a regular file */ |
70bf97ae | 840 | } |
1d0cd73f KZ |
841 | |
842 | if (writable) { | |
843 | char *dirname = strdup(filename); | |
844 | ||
845 | if (!dirname) | |
7c118af7 | 846 | goto done; |
1d0cd73f KZ |
847 | |
848 | stripoff_last_component(dirname); /* remove filename */ | |
849 | ||
b0bb8fb6 KZ |
850 | rc = mkdir(dirname, S_IWUSR| |
851 | S_IRUSR|S_IRGRP|S_IROTH| | |
852 | S_IXUSR|S_IXGRP|S_IXOTH); | |
1d0cd73f KZ |
853 | free(dirname); |
854 | if (rc && errno != EEXIST) | |
7c118af7 | 855 | goto done; /* probably EACCES */ |
1d0cd73f KZ |
856 | |
857 | *writable = !try_write(filename); | |
7c118af7 KZ |
858 | if (*writable) |
859 | return 1; | |
1d0cd73f | 860 | } |
7c118af7 | 861 | done: |
83a78332 | 862 | DBG(UTILS, ul_debug("%s: irregular/non-writable file", filename)); |
1d0cd73f | 863 | return 0; |
0532ba1d KZ |
864 | } |
865 | ||
ce4dd666 KZ |
866 | /** |
867 | * mnt_get_swaps_path: | |
868 | * | |
869 | * Returns: path to /proc/swaps or $LIBMOUNT_SWAPS. | |
870 | */ | |
871 | const char *mnt_get_swaps_path(void) | |
872 | { | |
873 | const char *p = safe_getenv("LIBMOUNT_SWAPS"); | |
874 | return p ? : _PATH_PROC_SWAPS; | |
875 | } | |
876 | ||
3a5b1b1d KZ |
877 | /** |
878 | * mnt_get_fstab_path: | |
879 | * | |
880 | * Returns: path to /etc/fstab or $LIBMOUNT_FSTAB. | |
881 | */ | |
882 | const char *mnt_get_fstab_path(void) | |
883 | { | |
035507c8 | 884 | const char *p = safe_getenv("LIBMOUNT_FSTAB"); |
3a5b1b1d KZ |
885 | return p ? : _PATH_MNTTAB; |
886 | } | |
887 | ||
888 | /** | |
889 | * mnt_get_mtab_path: | |
890 | * | |
d58b3157 | 891 | * This function returns the *default* location of the mtab file. The result does |
0f32f1e2 | 892 | * not have to be writable. See also mnt_has_regular_mtab(). |
3a5b1b1d KZ |
893 | * |
894 | * Returns: path to /etc/mtab or $LIBMOUNT_MTAB. | |
895 | */ | |
896 | const char *mnt_get_mtab_path(void) | |
897 | { | |
035507c8 | 898 | const char *p = safe_getenv("LIBMOUNT_MTAB"); |
3a5b1b1d KZ |
899 | return p ? : _PATH_MOUNTED; |
900 | } | |
901 | ||
77417bc0 KZ |
902 | /* |
903 | * Don't export this to libmount API -- utab is private library stuff. | |
be1a5180 | 904 | * |
a362ae60 | 905 | * Returns: path to /run/mount/utab (or /dev/.mount/utab) or $LIBMOUNT_UTAB. |
b37dd175 KZ |
906 | */ |
907 | const char *mnt_get_utab_path(void) | |
908 | { | |
a362ae60 | 909 | struct stat st; |
035507c8 | 910 | const char *p = safe_getenv("LIBMOUNT_UTAB"); |
a362ae60 KZ |
911 | |
912 | if (p) | |
913 | return p; | |
914 | ||
915 | if (stat(MNT_RUNTIME_TOPDIR, &st) == 0) | |
916 | return MNT_PATH_UTAB; | |
917 | ||
918 | return MNT_PATH_UTAB_OLD; | |
b37dd175 KZ |
919 | } |
920 | ||
d1be0c34 | 921 | |
d58b3157 | 922 | /* returns file descriptor or -errno, @name returns a unique filename |
b37dd175 | 923 | */ |
4b6cf485 | 924 | int mnt_open_uniq_filename(const char *filename, char **name) |
b37dd175 KZ |
925 | { |
926 | int rc, fd; | |
927 | char *n; | |
6fc81224 | 928 | mode_t oldmode; |
b37dd175 | 929 | |
ba2bdf41 KZ |
930 | if (!filename) |
931 | return -EINVAL; | |
b37dd175 KZ |
932 | if (name) |
933 | *name = NULL; | |
934 | ||
935 | rc = asprintf(&n, "%s.XXXXXX", filename); | |
936 | if (rc <= 0) | |
937 | return -errno; | |
938 | ||
d58b3157 | 939 | /* This is for very old glibc and for compatibility with Posix, which says |
6fc81224 KZ |
940 | * nothing about mkstemp() mode. All sane glibc use secure mode (0600). |
941 | */ | |
51479069 KZ |
942 | oldmode = umask(S_IRGRP|S_IWGRP|S_IXGRP| |
943 | S_IROTH|S_IWOTH|S_IXOTH); | |
1eb8539d | 944 | fd = mkostemp(n, O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC); |
1dbaf5cc NK |
945 | if (fd < 0) |
946 | fd = -errno; | |
51479069 | 947 | umask(oldmode); |
6fc81224 | 948 | |
b37dd175 KZ |
949 | if (fd >= 0 && name) |
950 | *name = n; | |
951 | else | |
952 | free(n); | |
953 | ||
1dbaf5cc | 954 | return fd; |
b37dd175 | 955 | } |
0bb44be3 | 956 | |
cd3d6c5b DR |
957 | /** |
958 | * mnt_get_mountpoint: | |
959 | * @path: pathname | |
960 | * | |
961 | * This function finds the mountpoint that a given path resides in. @path | |
962 | * should be canonicalized. The returned pointer should be freed by the caller. | |
963 | * | |
cd41b385 KZ |
964 | * WARNING: the function compares st_dev of the @path elements. This traditional |
965 | * way maybe be insufficient on filesystems like Linux "overlay". See also | |
966 | * mnt_table_find_target(). | |
967 | * | |
d58b3157 | 968 | * Returns: allocated string with the target of the mounted device or NULL on error |
cd3d6c5b | 969 | */ |
0bb44be3 KZ |
970 | char *mnt_get_mountpoint(const char *path) |
971 | { | |
4569bbea | 972 | char *mnt; |
0bb44be3 KZ |
973 | struct stat st; |
974 | dev_t dir, base; | |
975 | ||
37290a53 KZ |
976 | if (!path) |
977 | return NULL; | |
4569bbea KZ |
978 | |
979 | mnt = strdup(path); | |
0bb44be3 KZ |
980 | if (!mnt) |
981 | return NULL; | |
982 | if (*mnt == '/' && *(mnt + 1) == '\0') | |
9758c88a | 983 | goto done; |
0bb44be3 KZ |
984 | |
985 | if (stat(mnt, &st)) | |
986 | goto err; | |
987 | base = st.st_dev; | |
988 | ||
989 | do { | |
990 | char *p = stripoff_last_component(mnt); | |
991 | ||
992 | if (!p) | |
993 | break; | |
994 | if (stat(*mnt ? mnt : "/", &st)) | |
995 | goto err; | |
996 | dir = st.st_dev; | |
997 | if (dir != base) { | |
9d670a2a KZ |
998 | if (p > mnt) |
999 | *(p - 1) = '/'; | |
9758c88a | 1000 | goto done; |
0bb44be3 KZ |
1001 | } |
1002 | base = dir; | |
1003 | } while (mnt && *(mnt + 1) != '\0'); | |
1004 | ||
1005 | memcpy(mnt, "/", 2); | |
9758c88a | 1006 | done: |
83a78332 | 1007 | DBG(UTILS, ul_debug("%s mountpoint is %s", path, mnt)); |
9758c88a | 1008 | return mnt; |
0bb44be3 KZ |
1009 | err: |
1010 | free(mnt); | |
1011 | return NULL; | |
1012 | } | |
1013 | ||
f308ec19 KZ |
1014 | /* |
1015 | * Search for @name kernel command parametr. | |
1016 | * | |
d58b3157 | 1017 | * Returns newly allocated string with a parameter argument if the @name is |
f308ec19 | 1018 | * specified as "name=" or returns pointer to @name or returns NULL if not |
72a2a3f5 | 1019 | * found. If it is specified more than once, we grab the last copy. |
f308ec19 KZ |
1020 | * |
1021 | * For example cmdline: "aaa bbb=BBB ccc" | |
1022 | * | |
1023 | * @name is "aaa" --returns--> "aaa" (pointer to @name) | |
1024 | * @name is "bbb=" --returns--> "BBB" (allocated) | |
1025 | * @name is "foo" --returns--> NULL | |
72a2a3f5 MF |
1026 | * |
1027 | * Note: It is not really feasible to parse the command line exactly the same | |
1028 | * as the kernel does since we don't know which options are valid. We can use | |
1029 | * the -- marker though and not walk past that. | |
f308ec19 KZ |
1030 | */ |
1031 | char *mnt_get_kernel_cmdline_option(const char *name) | |
1032 | { | |
1033 | FILE *f; | |
1034 | size_t len; | |
1035 | int val = 0; | |
72a2a3f5 | 1036 | char *p, *res = NULL, *mem = NULL; |
f308ec19 KZ |
1037 | char buf[BUFSIZ]; /* see kernel include/asm-generic/setup.h: COMMAND_LINE_SIZE */ |
1038 | const char *path = _PATH_PROC_CMDLINE; | |
1039 | ||
72a2a3f5 | 1040 | if (!name || !name[0]) |
ba2bdf41 | 1041 | return NULL; |
f308ec19 KZ |
1042 | |
1043 | #ifdef TEST_PROGRAM | |
cd793967 | 1044 | path = getenv("LIBMOUNT_KERNEL_CMDLINE"); |
f308ec19 KZ |
1045 | if (!path) |
1046 | path = _PATH_PROC_CMDLINE; | |
1047 | #endif | |
1eb8539d | 1048 | f = fopen(path, "r" UL_CLOEXECSTR); |
f308ec19 KZ |
1049 | if (!f) |
1050 | return NULL; | |
1051 | ||
1052 | p = fgets(buf, sizeof(buf), f); | |
1053 | fclose(f); | |
1054 | ||
1055 | if (!p || !*p || *p == '\n') | |
1056 | return NULL; | |
1057 | ||
72a2a3f5 MF |
1058 | p = strstr(p, " -- "); |
1059 | if (p) { | |
1060 | /* no more kernel args after this */ | |
1061 | *p = '\0'; | |
1062 | } else { | |
1063 | len = strlen(buf); | |
1064 | buf[len - 1] = '\0'; /* remove last '\n' */ | |
1065 | } | |
f308ec19 KZ |
1066 | |
1067 | len = strlen(name); | |
72a2a3f5 | 1068 | if (name[len - 1] == '=') |
f308ec19 KZ |
1069 | val = 1; |
1070 | ||
72a2a3f5 | 1071 | for (p = buf; p && *p; p++) { |
f308ec19 KZ |
1072 | if (!(p = strstr(p, name))) |
1073 | break; /* not found the option */ | |
1074 | if (p != buf && !isblank(*(p - 1))) | |
1075 | continue; /* no space before the option */ | |
1076 | if (!val && *(p + len) != '\0' && !isblank(*(p + len))) | |
d58b3157 | 1077 | continue; /* no space after the option */ |
f308ec19 KZ |
1078 | if (val) { |
1079 | char *v = p + len; | |
72a2a3f5 | 1080 | int end; |
f308ec19 KZ |
1081 | |
1082 | while (*p && !isblank(*p)) /* jump to the end of the argument */ | |
1083 | p++; | |
72a2a3f5 | 1084 | end = (*p == '\0'); |
f308ec19 | 1085 | *p = '\0'; |
72a2a3f5 MF |
1086 | free(mem); |
1087 | res = mem = strdup(v); | |
1088 | if (end) | |
1089 | break; | |
f308ec19 KZ |
1090 | } else |
1091 | res = (char *) name; /* option without '=' */ | |
72a2a3f5 | 1092 | /* don't break -- keep scanning for more options */ |
f308ec19 KZ |
1093 | } |
1094 | ||
1095 | return res; | |
1096 | } | |
1097 | ||
abc9c0f7 | 1098 | #ifdef TEST_PROGRAM |
68164f6c | 1099 | int test_match_fstype(struct libmnt_test *ts, int argc, char *argv[]) |
abc9c0f7 KZ |
1100 | { |
1101 | char *type = argv[1]; | |
1102 | char *pattern = argv[2]; | |
1103 | ||
1104 | printf("%s\n", mnt_match_fstype(type, pattern) ? "MATCH" : "NOT-MATCH"); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
68164f6c | 1108 | int test_match_options(struct libmnt_test *ts, int argc, char *argv[]) |
abc9c0f7 KZ |
1109 | { |
1110 | char *optstr = argv[1]; | |
1111 | char *pattern = argv[2]; | |
1112 | ||
1113 | printf("%s\n", mnt_match_options(optstr, pattern) ? "MATCH" : "NOT-MATCH"); | |
1114 | return 0; | |
1115 | } | |
1116 | ||
68164f6c | 1117 | int test_startswith(struct libmnt_test *ts, int argc, char *argv[]) |
b49103ed KZ |
1118 | { |
1119 | char *optstr = argv[1]; | |
1120 | char *pattern = argv[2]; | |
1121 | ||
1122 | printf("%s\n", startswith(optstr, pattern) ? "YES" : "NOT"); | |
1123 | return 0; | |
1124 | } | |
1125 | ||
68164f6c | 1126 | int test_endswith(struct libmnt_test *ts, int argc, char *argv[]) |
b49103ed KZ |
1127 | { |
1128 | char *optstr = argv[1]; | |
1129 | char *pattern = argv[2]; | |
1130 | ||
1131 | printf("%s\n", endswith(optstr, pattern) ? "YES" : "NOT"); | |
1132 | return 0; | |
1133 | } | |
1134 | ||
40b27864 KZ |
1135 | int test_appendstr(struct libmnt_test *ts, int argc, char *argv[]) |
1136 | { | |
1137 | char *str = strdup(argv[1]); | |
1138 | const char *ap = argv[2]; | |
1139 | ||
1140 | append_string(&str, ap); | |
1141 | printf("new string: '%s'\n", str); | |
1142 | ||
1143 | free(str); | |
1144 | return 0; | |
1145 | } | |
1146 | ||
68164f6c | 1147 | int test_mountpoint(struct libmnt_test *ts, int argc, char *argv[]) |
0bb44be3 KZ |
1148 | { |
1149 | char *path = canonicalize_path(argv[1]), | |
1150 | *mnt = path ? mnt_get_mountpoint(path) : NULL; | |
1151 | ||
1152 | printf("%s: %s\n", argv[1], mnt ? : "unknown"); | |
1153 | free(mnt); | |
1154 | free(path); | |
1155 | return 0; | |
1156 | } | |
1157 | ||
68164f6c | 1158 | int test_filesystems(struct libmnt_test *ts, int argc, char *argv[]) |
97e23b5e KZ |
1159 | { |
1160 | char **filesystems = NULL; | |
1161 | int rc; | |
1162 | ||
1163 | rc = mnt_get_filesystems(&filesystems, argc ? argv[1] : NULL); | |
1164 | if (!rc) { | |
1165 | char **p; | |
1166 | for (p = filesystems; *p; p++) | |
1167 | printf("%s\n", *p); | |
1168 | mnt_free_filesystems(filesystems); | |
1169 | } | |
1170 | return rc; | |
1171 | } | |
1172 | ||
66bb8267 KZ |
1173 | int test_chdir(struct libmnt_test *ts, int argc, char *argv[]) |
1174 | { | |
1175 | int rc; | |
1176 | char *path = canonicalize_path(argv[1]), | |
1177 | *last = NULL; | |
1178 | ||
1179 | if (!path) | |
1180 | return -errno; | |
1181 | ||
1182 | rc = mnt_chdir_to_parent(path, &last); | |
1183 | if (!rc) { | |
1184 | printf("path='%s', abs='%s', last='%s'\n", | |
1185 | argv[1], path, last); | |
1186 | } | |
1187 | free(path); | |
1188 | free(last); | |
1189 | return rc; | |
1190 | } | |
1191 | ||
f308ec19 KZ |
1192 | int test_kernel_cmdline(struct libmnt_test *ts, int argc, char *argv[]) |
1193 | { | |
1194 | char *name = argv[1]; | |
1195 | char *res; | |
1196 | ||
1197 | res = mnt_get_kernel_cmdline_option(name); | |
1198 | if (!res) | |
1199 | printf("'%s' not found\n", name); | |
1200 | else if (res == name) | |
1201 | printf("'%s' found\n", name); | |
1202 | else { | |
1203 | printf("'%s' found, argument: '%s'\n", name, res); | |
1204 | free(res); | |
1205 | } | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
fd73f468 KZ |
1210 | int test_mkdir(struct libmnt_test *ts, int argc, char *argv[]) |
1211 | { | |
1212 | int rc; | |
1213 | ||
1214 | rc = mkdir_p(argv[1], S_IRWXU | | |
1215 | S_IRGRP | S_IXGRP | | |
1216 | S_IROTH | S_IXOTH); | |
1217 | if (rc) | |
1218 | printf("mkdir %s failed\n", argv[1]); | |
1219 | return rc; | |
1220 | } | |
1221 | ||
6a52473e KZ |
1222 | int test_statfs_type(struct libmnt_test *ts, int argc, char *argv[]) |
1223 | { | |
1224 | struct statfs vfs; | |
1225 | int rc; | |
1226 | ||
1227 | rc = statfs(argv[1], &vfs); | |
1228 | if (rc) | |
1229 | printf("%s: statfs failed: %m\n", argv[1]); | |
1230 | else | |
1231 | printf("%-30s: statfs type: %-12s [0x%lx]\n", argv[1], | |
1232 | mnt_statfs_get_fstype(&vfs), | |
1233 | (long) vfs.f_type); | |
1234 | return rc; | |
1235 | } | |
1236 | ||
66bb8267 | 1237 | |
abc9c0f7 KZ |
1238 | int main(int argc, char *argv[]) |
1239 | { | |
68164f6c | 1240 | struct libmnt_test tss[] = { |
abc9c0f7 KZ |
1241 | { "--match-fstype", test_match_fstype, "<type> <pattern> FS types matching" }, |
1242 | { "--match-options", test_match_options, "<options> <pattern> options matching" }, | |
97e23b5e | 1243 | { "--filesystems", test_filesystems, "[<pattern>] list /{etc,proc}/filesystems" }, |
b49103ed KZ |
1244 | { "--starts-with", test_startswith, "<string> <prefix>" }, |
1245 | { "--ends-with", test_endswith, "<string> <prefix>" }, | |
40b27864 | 1246 | { "--append-string", test_appendstr, "<string> <appendix>" }, |
0bb44be3 | 1247 | { "--mountpoint", test_mountpoint, "<path>" }, |
66bb8267 | 1248 | { "--cd-parent", test_chdir, "<path>" }, |
f308ec19 | 1249 | { "--kernel-cmdline",test_kernel_cmdline, "<option> | <option>=" }, |
fd73f468 | 1250 | { "--mkdir", test_mkdir, "<path>" }, |
6a52473e | 1251 | { "--statfs-type", test_statfs_type, "<path>" }, |
fd73f468 | 1252 | |
abc9c0f7 KZ |
1253 | { NULL } |
1254 | }; | |
1255 | ||
1256 | return mnt_run_test(tss, argc, argv); | |
1257 | } | |
1258 | ||
1259 | #endif /* TEST_PROGRAM */ |