blob: 33f01deb06dc0d4d3f9497230c35d7bec1cfef00 [file] [log] [blame]
Mike Frysinger9b5f71e2005-04-23 06:26:38 +00001/*
2 * stat -- display file or file system status
3 *
4 * Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation.
5 * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
6 * Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
7 *
8 * Written by Michael Meskes
9 * Taken from coreutils and turned into a busybox applet by Mike Frysinger
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27#include <stdio.h>
28#include <sys/types.h>
29#include <pwd.h>
30#include <grp.h>
31#include <sys/vfs.h>
32#include <time.h>
33#include <getopt.h>
34#include <sys/stat.h>
35#include <string.h>
36#include "busybox.h"
37
38/* vars to control behavior */
Mike Frysingerf06c4942005-04-24 03:53:12 +000039#define OPT_TERSE 2
40#define OPT_DEREFERNCE 4
41static long flags;
Mike Frysinger9b5f71e2005-04-23 06:26:38 +000042
43static char const *file_type(struct stat const *st)
44{
45 /* See POSIX 1003.1-2001 XCU Table 4-8 lines 17093-17107
46 * for some of these formats.
47 * To keep diagnostics grammatical in English, the
48 * returned string must start with a consonant.
49 */
50 if (S_ISREG(st->st_mode)) return st->st_size == 0 ? "regular empty file" : "regular file";
51 if (S_ISDIR(st->st_mode)) return "directory";
52 if (S_ISBLK(st->st_mode)) return "block special file";
53 if (S_ISCHR(st->st_mode)) return "character special file";
54 if (S_ISFIFO(st->st_mode)) return "fifo";
55 if (S_ISLNK(st->st_mode)) return "symbolic link";
56 if (S_ISSOCK(st->st_mode)) return "socket";
57 if (S_TYPEISMQ(st)) return "message queue";
58 if (S_TYPEISSEM(st)) return "semaphore";
59 if (S_TYPEISSHM(st)) return "shared memory object";
60#ifdef S_TYPEISTMO
61 if (S_TYPEISTMO(st)) return "typed memory object";
62#endif
63 return "weird file";
64}
65
66static char const *human_time(time_t t)
67{
68 static char *str;
69 str = ctime(&t);
70 str[strlen(str)-1] = '\0';
71 return str;
72}
73
74/* Return the type of the specified file system.
75 * Some systems have statfvs.f_basetype[FSTYPSZ]. (AIX, HP-UX, and Solaris)
76 * Others have statfs.f_fstypename[MFSNAMELEN]. (NetBSD 1.5.2)
77 * Still others have neither and have to get by with f_type (Linux).
78 */
79static char const *human_fstype(long f_type)
80{
Mike Frysinger408ae212005-04-24 04:11:44 +000081 int i;
82 static struct types {
83 long type;
84 char *fs;
85 } humantypes[] = {
86 { 0xADFF, "affs" },
87 { 0x1Cd1, "devpts" },
88 { 0x137D, "ext" },
89 { 0xEF51, "ext2" },
90 { 0xEF53, "ext2/ext3" },
91 { 0x3153464a, "jfs" },
92 { 0x58465342, "xfs" },
93 { 0xF995E849, "hpfs" },
94 { 0x9660, "isofs" },
95 { 0x4000, "isofs" },
96 { 0x4004, "isofs" },
97 { 0x137F, "minix" },
98 { 0x138F, "minix (30 char.)" },
99 { 0x2468, "minix v2" },
100 { 0x2478, "minix v2 (30 char.)" },
101 { 0x4d44, "msdos" },
102 { 0x4006, "fat" },
103 { 0x564c, "novell" },
104 { 0x6969, "nfs" },
105 { 0x9fa0, "proc" },
106 { 0x517B, "smb" },
107 { 0x012FF7B4, "xenix" },
108 { 0x012FF7B5, "sysv4" },
109 { 0x012FF7B6, "sysv2" },
110 { 0x012FF7B7, "coh" },
111 { 0x00011954, "ufs" },
112 { 0x012FD16D, "xia" },
113 { 0x5346544e, "ntfs" },
114 { 0x1021994, "tmpfs" },
115 { 0x52654973, "reiserfs" },
116 { 0x28cd3d45, "cramfs" },
117 { 0x7275, "romfs" },
118 { 0x858458f6, "romfs" },
119 { 0x73717368, "squashfs" },
120 { 0x62656572, "sysfs" },
121 { 0, "UNKNOWN" },
122 { 0, NULL }
123 };
124 for (i=0; humantypes[i].type; ++i)
125 if (humantypes[i].type == f_type)
126 return humantypes[i].fs;
127 return humantypes[i].fs;
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000128}
129
130#ifdef CONFIG_FEATURE_STAT_FORMAT
131/* print statfs info */
132static void print_statfs(char *pformat, size_t buf_len, char m,
133 char const *filename, void const *data)
134{
135 struct statfs const *statfsbuf = data;
136
137 switch (m) {
138 case 'n':
139 strncat(pformat, "s", buf_len);
140 printf(pformat, filename);
141 break;
142 case 'i':
143 strncat(pformat, "Lx", buf_len);
144 printf(pformat, statfsbuf->f_fsid);
145 break;
146 case 'l':
147 strncat(pformat, "lu", buf_len);
148 printf(pformat, statfsbuf->f_namelen);
149 break;
150 case 't':
151 strncat(pformat, "lx", buf_len);
152 printf(pformat, (unsigned long int) (statfsbuf->f_type)); /* no equiv. */
153 break;
154 case 'T':
155 strncat(pformat, "s", buf_len);
156 printf(pformat, human_fstype(statfsbuf->f_type));
157 break;
158 case 'b':
159 strncat(pformat, "ld", buf_len);
160 printf(pformat, (intmax_t) (statfsbuf->f_blocks));
161 break;
162 case 'f':
163 strncat(pformat, "ld", buf_len);
164 printf(pformat, (intmax_t) (statfsbuf->f_bfree));
165 break;
166 case 'a':
167 strncat(pformat, "ld", buf_len);
168 printf(pformat, (intmax_t) (statfsbuf->f_bavail));
169 break;
170 case 's':
171 strncat(pformat, "lu", buf_len);
172 printf(pformat, (unsigned long int) (statfsbuf->f_bsize));
173 break;
174 case 'S': {
175 unsigned long int frsize = statfsbuf->f_frsize;
176 if (!frsize)
177 frsize = statfsbuf->f_bsize;
178 strncat(pformat, "lu", buf_len);
179 printf(pformat, frsize);
180 break;
181 }
182 case 'c':
183 strncat(pformat, "ld", buf_len);
184 printf(pformat, (intmax_t) (statfsbuf->f_files));
185 break;
186 case 'd':
187 strncat(pformat, "ld", buf_len);
188 printf(pformat, (intmax_t) (statfsbuf->f_ffree));
189 break;
190 default:
191 strncat(pformat, "c", buf_len);
192 printf(pformat, m);
193 break;
194 }
195}
196
197/* print stat info */
198static void print_stat(char *pformat, size_t buf_len, char m,
199 char const *filename, void const *data)
200{
201#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
202 struct stat *statbuf = (struct stat *) data;
203 struct passwd *pw_ent;
204 struct group *gw_ent;
205
206 switch (m) {
207 case 'n':
208 strncat(pformat, "s", buf_len);
209 printf(pformat, filename);
210 break;
211 case 'N':
212 strncat(pformat, "s", buf_len);
213 if (S_ISLNK(statbuf->st_mode)) {
214 char *linkname = xreadlink(filename);
215 if (linkname == NULL) {
216 bb_perror_msg("cannot read symbolic link '%s'", filename);
217 return;
218 }
219 /*printf("\"%s\" -> \"%s\"", filename, linkname); */
220 printf(pformat, filename);
221 printf(" -> ");
222 printf(pformat, linkname);
223 } else {
224 printf(pformat, filename);
225 }
226 break;
227 case 'd':
228 strncat(pformat, "lu", buf_len);
229 printf(pformat, (uintmax_t) statbuf->st_dev);
230 break;
231 case 'D':
232 strncat(pformat, "lx", buf_len);
233 printf(pformat, (uintmax_t) statbuf->st_dev);
234 break;
235 case 'i':
236 strncat(pformat, "lu", buf_len);
237 printf(pformat, (uintmax_t) statbuf->st_ino);
238 break;
239 case 'a':
240 strncat(pformat, "lo", buf_len);
241 printf(pformat, (unsigned long int) (statbuf->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)));
242 break;
243 case 'A':
244 strncat(pformat, "s", buf_len);
245 printf(pformat, bb_mode_string(statbuf->st_mode));
246 break;
247 case 'f':
248 strncat(pformat, "lx", buf_len);
249 printf(pformat, (unsigned long int) statbuf->st_mode);
250 break;
251 case 'F':
252 strncat(pformat, "s", buf_len);
253 printf(pformat, file_type(statbuf));
254 break;
255 case 'h':
256 strncat(pformat, "lu", buf_len);
257 printf(pformat, (unsigned long int) statbuf->st_nlink);
258 break;
259 case 'u':
260 strncat(pformat, "lu", buf_len);
261 printf(pformat, (unsigned long int) statbuf->st_uid);
262 break;
263 case 'U':
264 strncat(pformat, "s", buf_len);
265 setpwent();
266 pw_ent = getpwuid(statbuf->st_uid);
267 printf(pformat, (pw_ent != 0L) ? pw_ent->pw_name : "UNKNOWN");
268 break;
269 case 'g':
270 strncat(pformat, "lu", buf_len);
271 printf(pformat, (unsigned long int) statbuf->st_gid);
272 break;
273 case 'G':
274 strncat(pformat, "s", buf_len);
275 setgrent();
276 gw_ent = getgrgid(statbuf->st_gid);
277 printf(pformat, (gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN");
278 break;
279 case 't':
280 strncat(pformat, "lx", buf_len);
281 printf(pformat, (unsigned long int) major(statbuf->st_rdev));
282 break;
283 case 'T':
284 strncat(pformat, "lx", buf_len);
285 printf(pformat, (unsigned long int) minor(statbuf->st_rdev));
286 break;
287 case 's':
288 strncat(pformat, "lu", buf_len);
289 printf(pformat, (uintmax_t) (statbuf->st_size));
290 break;
291 case 'B':
292 strncat(pformat, "lu", buf_len);
293 printf(pformat, (unsigned long int) 512); //ST_NBLOCKSIZE
294 break;
295 case 'b':
296 strncat(pformat, "lu", buf_len);
297 printf(pformat, (uintmax_t) statbuf->st_blocks);
298 break;
299 case 'o':
300 strncat(pformat, "lu", buf_len);
301 printf(pformat, (unsigned long int) statbuf->st_blksize);
302 break;
303 case 'x':
304 strncat(pformat, "s", buf_len);
305 printf(pformat, human_time(statbuf->st_atime));
306 break;
307 case 'X':
308 strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
309 printf(pformat, (unsigned long int) statbuf->st_atime);
310 break;
311 case 'y':
312 strncat(pformat, "s", buf_len);
313 printf(pformat, human_time(statbuf->st_mtime));
314 break;
315 case 'Y':
316 strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
317 printf(pformat, (unsigned long int) statbuf->st_mtime);
318 break;
319 case 'z':
320 strncat(pformat, "s", buf_len);
321 printf(pformat, human_time(statbuf->st_ctime));
322 break;
323 case 'Z':
324 strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
325 printf(pformat, (unsigned long int) statbuf->st_ctime);
326 break;
327 default:
328 strncat(pformat, "c", buf_len);
329 printf(pformat, m);
330 break;
331 }
332}
333
334static void print_it(char const *masterformat, char const *filename,
335 void (*print_func) (char *, size_t, char, char const *, void const *),
336 void const *data)
337{
338 char *b;
339
340 /* create a working copy of the format string */
341 char *format = bb_xstrdup(masterformat);
342
343 /* Add 2 to accommodate our conversion of the stat `%s' format string
344 * to the printf `%llu' one. */
345 size_t n_alloc = strlen(format) + 2 + 1;
346 char *dest = xmalloc(n_alloc);
347
348 b = format;
349 while (b) {
350 char *p = strchr(b, '%');
351 if (p != NULL) {
352 size_t len;
353 *p++ = '\0';
354 fputs(b, stdout);
355
356 len = strspn(p, "#-+.I 0123456789");
357 dest[0] = '%';
358 memcpy(dest + 1, p, len);
359 dest[1 + len] = 0;
360 p += len;
361
362 b = p + 1;
363 switch (*p) {
364 case '\0':
365 b = NULL;
366 /* fall through */
367 case '%':
368 putchar('%');
369 break;
370 default:
371 print_func(dest, n_alloc, *p, filename, data);
372 break;
373 }
374
375 } else {
376 fputs(b, stdout);
377 b = NULL;
378 }
379 }
380
381 free(format);
382 free(dest);
383}
384#endif
385
386/* Stat the file system and print what we find. */
387static int do_statfs(char const *filename, char const *format)
388{
389 struct statfs statfsbuf;
390
391 if (statfs(filename, &statfsbuf) != 0) {
392 bb_perror_msg("cannot read file system information for '%s'", filename);
393 return 0;
394 }
395
396#ifdef CONFIG_FEATURE_STAT_FORMAT
397 if (format == NULL)
Mike Frysingerf06c4942005-04-24 03:53:12 +0000398 format = (flags & OPT_TERSE
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000399 ? "%n %i %l %t %s %S %b %f %a %c %d\n"
400 : " File: \"%n\"\n"
401 " ID: %-8i Namelen: %-7l Type: %T\n"
402 "Block size: %-10s Fundamental block size: %S\n"
403 "Blocks: Total: %-10b Free: %-10f Available: %a\n"
404 "Inodes: Total: %-10c Free: %d\n");
405 print_it(format, filename, print_statfs, &statfsbuf);
406#else
407
Mike Frysingerf06c4942005-04-24 03:53:12 +0000408 format = (flags & OPT_TERSE
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000409 ? "%s %Lx %lu "
410 : " File: \"%s\"\n"
411 " ID: %-8Lx Namelen: %-7lu ");
412 printf(format,
413 filename,
414 statfsbuf.f_fsid,
415 statfsbuf.f_namelen);
416
Mike Frysingerf06c4942005-04-24 03:53:12 +0000417 if (flags & OPT_TERSE)
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000418 printf("%lx ", (unsigned long int) (statfsbuf.f_type));
419 else
420 printf("Type: %s\n", human_fstype(statfsbuf.f_type));
421
Mike Frysingerf06c4942005-04-24 03:53:12 +0000422 format = (flags & OPT_TERSE
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000423 ? "%lu %lu %ld %ld %ld %ld %ld\n"
424 : "Block size: %-10lu Fundamental block size: %lu\n"
425 "Blocks: Total: %-10ld Free: %-10ld Available: %ld\n"
426 "Inodes: Total: %-10ld Free: %ld\n");
427 printf(format,
428 (unsigned long int) (statfsbuf.f_bsize),
429 statfsbuf.f_frsize ? statfsbuf.f_frsize : statfsbuf.f_bsize,
430 (intmax_t) (statfsbuf.f_blocks),
431 (intmax_t) (statfsbuf.f_bfree),
432 (intmax_t) (statfsbuf.f_bavail),
433 (intmax_t) (statfsbuf.f_files),
434 (intmax_t) (statfsbuf.f_ffree));
435#endif
436
437 return 1;
438}
439
440/* stat the file and print what we find */
441static int do_stat(char const *filename, char const *format)
442{
443 struct stat statbuf;
444
Mike Frysingerf06c4942005-04-24 03:53:12 +0000445 if ((flags & OPT_DEREFERNCE ? stat : lstat) (filename, &statbuf) != 0) {
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000446 bb_perror_msg("cannot stat '%s'", filename);
447 return 0;
448 }
449
450#ifdef CONFIG_FEATURE_STAT_FORMAT
451 if (format == NULL) {
Mike Frysingerf06c4942005-04-24 03:53:12 +0000452 if (flags & OPT_TERSE) {
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000453 format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o\n";
454 } else {
455 if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode)) {
456 format =
457 " File: \"%N\"\n"
458 " Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
459 "Device: %Dh/%dd\tInode: %-10i Links: %-5h"
460 " Device type: %t,%T\n"
461 "Access: (%04a/%10.10A) Uid: (%5u/%8U) Gid: (%5g/%8G)\n"
462 "Access: %x\n" "Modify: %y\n" "Change: %z\n";
463 } else {
464 format =
465 " File: \"%N\"\n"
466 " Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
467 "Device: %Dh/%dd\tInode: %-10i Links: %h\n"
468 "Access: (%04a/%10.10A) Uid: (%5u/%8U) Gid: (%5g/%8G)\n"
469 "Access: %x\n" "Modify: %y\n" "Change: %z\n";
470 }
471 }
472 }
473 print_it(format, filename, print_stat, &statbuf);
474#else
Mike Frysingerf06c4942005-04-24 03:53:12 +0000475 if (flags & OPT_TERSE) {
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000476 printf("%s %lu %lu %lx %lu %lu %lx %lu %lu %lx %lx %lu %lu %lu %lu\n",
477 filename,
478 (uintmax_t) (statbuf.st_size),
479 (uintmax_t) statbuf.st_blocks,
480 (unsigned long int) statbuf.st_mode,
481 (unsigned long int) statbuf.st_uid,
482 (unsigned long int) statbuf.st_gid,
483 (uintmax_t) statbuf.st_dev,
484 (uintmax_t) statbuf.st_ino,
485 (unsigned long int) statbuf.st_nlink,
486 (unsigned long int) major(statbuf.st_rdev),
487 (unsigned long int) minor(statbuf.st_rdev),
488 (unsigned long int) statbuf.st_atime,
489 (unsigned long int) statbuf.st_mtime,
490 (unsigned long int) statbuf.st_ctime,
491 (unsigned long int) statbuf.st_blksize
492 );
493 } else {
494 char *linkname = NULL;
495
496 struct passwd *pw_ent;
497 struct group *gw_ent;
498 setgrent();
499 gw_ent = getgrgid(statbuf.st_gid);
500 setpwent();
501 pw_ent = getpwuid(statbuf.st_uid);
502
503 if (S_ISLNK(statbuf.st_mode))
504 linkname = xreadlink(filename);
505 if (linkname)
506 printf(" File: \"%s\" -> \"%s\"\n", filename, linkname);
507 else
508 printf(" File: \"%s\"\n", filename);
509
510 printf(" Size: %-10lu\tBlocks: %-10lu IO Block: %-6lu %s\n"
511 "Device: %lxh/%lud\tInode: %-10lu Links: %-5lu",
512 (uintmax_t) (statbuf.st_size),
513 (uintmax_t) statbuf.st_blocks,
514 (unsigned long int) statbuf.st_blksize,
515 file_type(&statbuf),
516 (uintmax_t) statbuf.st_dev,
517 (uintmax_t) statbuf.st_dev,
518 (uintmax_t) statbuf.st_ino,
519 (unsigned long int) statbuf.st_nlink);
520 if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode))
521 printf(" Device type: %lx,%lx\n",
522 (unsigned long int) major(statbuf.st_rdev),
523 (unsigned long int) minor(statbuf.st_rdev));
524 else
525 putchar('\n');
526 printf("Access: (%04lo/%10.10s) Uid: (%5lu/%8s) Gid: (%5lu/%8s)\n"
527 "Access: %s\n" "Modify: %s\n" "Change: %s\n",
528 (unsigned long int) (statbuf.st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)),
529 bb_mode_string(statbuf.st_mode),
530 (unsigned long int) statbuf.st_uid,
531 (pw_ent != 0L) ? pw_ent->pw_name : "UNKNOWN",
532 (unsigned long int) statbuf.st_gid,
533 (gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN",
534 human_time(statbuf.st_atime),
535 human_time(statbuf.st_mtime),
536 human_time(statbuf.st_ctime));
537 }
538#endif
539 return 1;
540}
541
542int stat_main(int argc, char **argv)
543{
544 int i;
545 char *format = NULL;
546 int ok = 1;
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000547 int (*statfunc)(char const *, char const *) = do_stat;
548
Mike Frysingerf06c4942005-04-24 03:53:12 +0000549 flags = bb_getopt_ulflags(argc, argv, "ftL"
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000550#ifdef CONFIG_FEATURE_STAT_FORMAT
551 "c:", &format
552#endif
553 );
554
555 if (flags & 1) /* -f */
556 statfunc = do_statfs;
Mike Frysinger9b5f71e2005-04-23 06:26:38 +0000557 if (argc == optind) /* files */
558 bb_show_usage();
559
560 for (i = optind; i < argc; ++i)
561 ok &= statfunc(argv[i], format);
562
563 return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
564}