Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
/* vi: set sw=4 ts=4: */
/*
 * stat -- display file or file system status
 *
 * Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation.
 * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
 * Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
 *
 * Written by Michael Meskes
 * Taken from coreutils and turned into a busybox applet by Mike Frysinger
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "busybox.h"

/* vars to control behavior */
#define OPT_TERSE 2
#define OPT_DEREFERENCE 4
static long flags;

static char const *file_type(struct stat const *st)
{
	/* See POSIX 1003.1-2001 XCU Table 4-8 lines 17093-17107
	 * for some of these formats.
	 * To keep diagnostics grammatical in English, the
	 * returned string must start with a consonant.
	 */
	if (S_ISREG(st->st_mode))  return st->st_size == 0 ? "regular empty file" : "regular file";
	if (S_ISDIR(st->st_mode))  return "directory";
	if (S_ISBLK(st->st_mode))  return "block special file";
	if (S_ISCHR(st->st_mode))  return "character special file";
	if (S_ISFIFO(st->st_mode)) return "fifo";
	if (S_ISLNK(st->st_mode))  return "symbolic link";
	if (S_ISSOCK(st->st_mode)) return "socket";
	if (S_TYPEISMQ(st))        return "message queue";
	if (S_TYPEISSEM(st))       return "semaphore";
	if (S_TYPEISSHM(st))       return "shared memory object";
#ifdef S_TYPEISTMO
	if (S_TYPEISTMO(st))       return "typed memory object";
#endif
	return "weird file";
}

static char const *human_time(time_t t)
{
	/* Old
	static char *str;
	str = ctime(&t);
	str[strlen(str)-1] = '\0';
	return str;
	*/
	/* coreutils 6.3 compat: */
	static char buf[sizeof("YYYY-MM-DD HH:MM:SS.000000000")];
	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S.000000000", localtime(&t));
	return buf;
}

/* Return the type of the specified file system.
 * Some systems have statfvs.f_basetype[FSTYPSZ]. (AIX, HP-UX, and Solaris)
 * Others have statfs.f_fstypename[MFSNAMELEN]. (NetBSD 1.5.2)
 * Still others have neither and have to get by with f_type (Linux).
 */
static char const *human_fstype(long f_type)
{
	int i;
	static const struct types {
		long type;
		const char *fs;
	} humantypes[] = {
		{ 0xADFF,     "affs" },
		{ 0x1Cd1,     "devpts" },
		{ 0x137D,     "ext" },
		{ 0xEF51,     "ext2" },
		{ 0xEF53,     "ext2/ext3" },
		{ 0x3153464a, "jfs" },
		{ 0x58465342, "xfs" },
		{ 0xF995E849, "hpfs" },
		{ 0x9660,     "isofs" },
		{ 0x4000,     "isofs" },
		{ 0x4004,     "isofs" },
		{ 0x137F,     "minix" },
		{ 0x138F,     "minix (30 char.)" },
		{ 0x2468,     "minix v2" },
		{ 0x2478,     "minix v2 (30 char.)" },
		{ 0x4d44,     "msdos" },
		{ 0x4006,     "fat" },
		{ 0x564c,     "novell" },
		{ 0x6969,     "nfs" },
		{ 0x9fa0,     "proc" },
		{ 0x517B,     "smb" },
		{ 0x012FF7B4, "xenix" },
		{ 0x012FF7B5, "sysv4" },
		{ 0x012FF7B6, "sysv2" },
		{ 0x012FF7B7, "coh" },
		{ 0x00011954, "ufs" },
		{ 0x012FD16D, "xia" },
		{ 0x5346544e, "ntfs" },
		{ 0x1021994,  "tmpfs" },
		{ 0x52654973, "reiserfs" },
		{ 0x28cd3d45, "cramfs" },
		{ 0x7275,     "romfs" },
		{ 0x858458f6, "romfs" },
		{ 0x73717368, "squashfs" },
		{ 0x62656572, "sysfs" },
		{ 0, "UNKNOWN" }
	};
	for (i=0; humantypes[i].type; ++i)
		if (humantypes[i].type == f_type)
			break;
	return humantypes[i].fs;
}

#ifdef CONFIG_FEATURE_STAT_FORMAT
/* print statfs info */
static void print_statfs(char *pformat, size_t buf_len, char m,
			 char const *filename, void const *data)
{
	struct statfs const *statfsbuf = data;

	switch (m) {
	case 'n':
		strncat(pformat, "s", buf_len);
		printf(pformat, filename);
		break;
	case 'i':
		strncat(pformat, "Lx", buf_len);
		printf(pformat, statfsbuf->f_fsid);
		break;
	case 'l':
		strncat(pformat, "lu", buf_len);
		printf(pformat, statfsbuf->f_namelen);
		break;
	case 't':
		strncat(pformat, "lx", buf_len);
		printf(pformat, (unsigned long int) (statfsbuf->f_type));  /* no equiv. */
		break;
	case 'T':
		strncat(pformat, "s", buf_len);
		printf(pformat, human_fstype(statfsbuf->f_type));
		break;
	case 'b':
		strncat(pformat, "jd", buf_len);
		printf(pformat, (intmax_t) (statfsbuf->f_blocks));
		break;
	case 'f':
		strncat(pformat, "jd", buf_len);
		printf(pformat, (intmax_t) (statfsbuf->f_bfree));
		break;
	case 'a':
		strncat(pformat, "jd", buf_len);
		printf(pformat, (intmax_t) (statfsbuf->f_bavail));
		break;
	case 'S':
	case 's':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) (statfsbuf->f_bsize));
		break;
	case 'c':
		strncat(pformat, "jd", buf_len);
		printf(pformat, (intmax_t) (statfsbuf->f_files));
		break;
	case 'd':
		strncat(pformat, "jd", buf_len);
		printf(pformat, (intmax_t) (statfsbuf->f_ffree));
		break;
	default:
		strncat(pformat, "c", buf_len);
		printf(pformat, m);
		break;
	}
}

/* print stat info */
static void print_stat(char *pformat, size_t buf_len, char m,
		       char const *filename, void const *data)
{
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
	struct stat *statbuf = (struct stat *) data;
	struct passwd *pw_ent;
	struct group *gw_ent;

	switch (m) {
	case 'n':
		strncat(pformat, "s", buf_len);
		printf(pformat, filename);
		break;
	case 'N':
		strncat(pformat, "s", buf_len);
		if (S_ISLNK(statbuf->st_mode)) {
			char *linkname = xreadlink(filename);
			if (linkname == NULL) {
				bb_perror_msg("cannot read symbolic link '%s'", filename);
				return;
			}
			/*printf("\"%s\" -> \"%s\"", filename, linkname); */
			printf(pformat, filename);
			printf(" -> ");
			printf(pformat, linkname);
		} else {
			printf(pformat, filename);
		}
		break;
	case 'd':
		strncat(pformat, "ju", buf_len);
		printf(pformat, (uintmax_t) statbuf->st_dev);
		break;
	case 'D':
		strncat(pformat, "jx", buf_len);
		printf(pformat, (uintmax_t) statbuf->st_dev);
		break;
	case 'i':
		strncat(pformat, "ju", buf_len);
		printf(pformat, (uintmax_t) statbuf->st_ino);
		break;
	case 'a':
		strncat(pformat, "lo", buf_len);
		printf(pformat, (unsigned long int) (statbuf->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)));
		break;
	case 'A':
		strncat(pformat, "s", buf_len);
		printf(pformat, bb_mode_string(statbuf->st_mode));
		break;
	case 'f':
		strncat(pformat, "lx", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_mode);
		break;
	case 'F':
		strncat(pformat, "s", buf_len);
		printf(pformat, file_type(statbuf));
		break;
	case 'h':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_nlink);
		break;
	case 'u':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_uid);
		break;
	case 'U':
		strncat(pformat, "s", buf_len);
		setpwent();
		pw_ent = getpwuid(statbuf->st_uid);
		printf(pformat, (pw_ent != 0L) ? pw_ent->pw_name : "UNKNOWN");
		break;
	case 'g':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_gid);
		break;
	case 'G':
		strncat(pformat, "s", buf_len);
		setgrent();
		gw_ent = getgrgid(statbuf->st_gid);
		printf(pformat, (gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN");
		break;
	case 't':
		strncat(pformat, "lx", buf_len);
		printf(pformat, (unsigned long int) major(statbuf->st_rdev));
		break;
	case 'T':
		strncat(pformat, "lx", buf_len);
		printf(pformat, (unsigned long int) minor(statbuf->st_rdev));
		break;
	case 's':
		strncat(pformat, "ju", buf_len);
		printf(pformat, (uintmax_t) (statbuf->st_size));
		break;
	case 'B':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) 512); //ST_NBLOCKSIZE
		break;
	case 'b':
		strncat(pformat, "ju", buf_len);
		printf(pformat, (uintmax_t) statbuf->st_blocks);
		break;
	case 'o':
		strncat(pformat, "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_blksize);
		break;
	case 'x':
		strncat(pformat, "s", buf_len);
		printf(pformat, human_time(statbuf->st_atime));
		break;
	case 'X':
		strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_atime);
		break;
	case 'y':
		strncat(pformat, "s", buf_len);
		printf(pformat, human_time(statbuf->st_mtime));
		break;
	case 'Y':
		strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_mtime);
		break;
	case 'z':
		strncat(pformat, "s", buf_len);
		printf(pformat, human_time(statbuf->st_ctime));
		break;
	case 'Z':
		strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
		printf(pformat, (unsigned long int) statbuf->st_ctime);
		break;
	default:
		strncat(pformat, "c", buf_len);
		printf(pformat, m);
		break;
	}
}

static void print_it(char const *masterformat, char const *filename,
		     void (*print_func) (char *, size_t, char, char const *, void const *),
		     void const *data)
{
	char *b;

	/* create a working copy of the format string */
	char *format = xstrdup(masterformat);

	/* Add 2 to accomodate our conversion of the stat '%s' format string
	 * to the printf '%llu' one.  */
	size_t n_alloc = strlen(format) + 2 + 1;
	char *dest = xmalloc(n_alloc);

	b = format;
	while (b) {
		size_t len;
		char *p = strchr(b, '%');
		if (!p) {
			/* coreutils 6.3 always print <cr> at the end */
			/*fputs(b, stdout);*/
			puts(b);
			break;
		}
		*p++ = '\0';
		fputs(b, stdout);

		len = strspn(p, "#-+.I 0123456789");
		dest[0] = '%';
		memcpy(dest + 1, p, len);
		dest[1 + len] = 0;
		p += len;

		b = p + 1;
		switch (*p) {
		case '\0':
			b = NULL;
			/* fall through */
		case '%':
			putchar('%');
			break;
		default:
			print_func(dest, n_alloc, *p, filename, data);
			break;
		}
	}

	free(format);
	free(dest);
}
#endif

/* Stat the file system and print what we find.  */
static int do_statfs(char const *filename, char const *format)
{
	struct statfs statfsbuf;

	if (statfs(filename, &statfsbuf) != 0) {
		bb_perror_msg("cannot read file system information for '%s'", filename);
		return 0;
	}

#ifdef CONFIG_FEATURE_STAT_FORMAT
	if (format == NULL)
		format = (flags & OPT_TERSE
			? "%n %i %l %t %s %b %f %a %c %d\n"
			: "  File: \"%n\"\n"
			  "    ID: %-8i Namelen: %-7l Type: %T\n"
			  "Block size: %-10s\n"
			  "Blocks: Total: %-10b Free: %-10f Available: %a\n"
			  "Inodes: Total: %-10c Free: %d");
	print_it(format, filename, print_statfs, &statfsbuf);
#else

	format = (flags & OPT_TERSE
		? "%s %llx %lu "
		: "  File: \"%s\"\n"
		  "    ID: %-8Lx Namelen: %-7lu ");
	printf(format,
	       filename,
	       statfsbuf.f_fsid,
	       statfsbuf.f_namelen);

	if (flags & OPT_TERSE)
		printf("%lx ", (unsigned long int) (statfsbuf.f_type));
	else
		printf("Type: %s\n", human_fstype(statfsbuf.f_type));

	format = (flags & OPT_TERSE
		? "%lu %ld %ld %ld %ld %ld\n"
		: "Block size: %-10lu\n"
		  "Blocks: Total: %-10jd Free: %-10jd Available: %jd\n"
		  "Inodes: Total: %-10jd Free: %jd\n");
	printf(format,
	       (unsigned long int) (statfsbuf.f_bsize),
	       (intmax_t) (statfsbuf.f_blocks),
	       (intmax_t) (statfsbuf.f_bfree),
	       (intmax_t) (statfsbuf.f_bavail),
	       (intmax_t) (statfsbuf.f_files),
	       (intmax_t) (statfsbuf.f_ffree));
#endif

	return 1;
}

/* stat the file and print what we find */
static int do_stat(char const *filename, char const *format)
{
	struct stat statbuf;

	if ((flags & OPT_DEREFERENCE ? stat : lstat) (filename, &statbuf) != 0) {
		bb_perror_msg("cannot stat '%s'", filename);
		return 0;
	}

#ifdef CONFIG_FEATURE_STAT_FORMAT
	if (format == NULL) {
		if (flags & OPT_TERSE) {
			format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o";
		} else {
			if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode)) {
				format =
					"  File: \"%N\"\n"
					"  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
					"Device: %Dh/%dd\tInode: %-10i  Links: %-5h"
					" Device type: %t,%T\n"
					"Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
					"Access: %x\n" "Modify: %y\n" "Change: %z\n";
			} else {
				format =
					"  File: \"%N\"\n"
					"  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
					"Device: %Dh/%dd\tInode: %-10i  Links: %h\n"
					"Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
					"Access: %x\n" "Modify: %y\n" "Change: %z\n";
			}
		}
	}
	print_it(format, filename, print_stat, &statbuf);
#else
	if (flags & OPT_TERSE) {
		printf("%s %ju %ju %lx %lu %lu %jx %ju %lu %lx %lx %lu %lu %lu %lu\n",
		       filename,
		       (uintmax_t) (statbuf.st_size),
		       (uintmax_t) statbuf.st_blocks,
		       (unsigned long int) statbuf.st_mode,
		       (unsigned long int) statbuf.st_uid,
		       (unsigned long int) statbuf.st_gid,
		       (uintmax_t) statbuf.st_dev,
		       (uintmax_t) statbuf.st_ino,
		       (unsigned long int) statbuf.st_nlink,
		       (unsigned long int) major(statbuf.st_rdev),
		       (unsigned long int) minor(statbuf.st_rdev),
		       (unsigned long int) statbuf.st_atime,
		       (unsigned long int) statbuf.st_mtime,
		       (unsigned long int) statbuf.st_ctime,
		       (unsigned long int) statbuf.st_blksize
		);
	} else {
		char *linkname = NULL;

		struct passwd *pw_ent;
		struct group *gw_ent;
		setgrent();
		gw_ent = getgrgid(statbuf.st_gid);
		setpwent();
		pw_ent = getpwuid(statbuf.st_uid);

		if (S_ISLNK(statbuf.st_mode))
			linkname = xreadlink(filename);
		if (linkname)
			printf("  File: \"%s\" -> \"%s\"\n", filename, linkname);
		else
			printf("  File: \"%s\"\n", filename);

		printf("  Size: %-10ju\tBlocks: %-10ju IO Block: %-6lu %s\n"
		       "Device: %jxh/%jud\tInode: %-10ju  Links: %-5lu",
		       (uintmax_t) (statbuf.st_size),
		       (uintmax_t) statbuf.st_blocks,
		       (unsigned long int) statbuf.st_blksize,
		       file_type(&statbuf),
		       (uintmax_t) statbuf.st_dev,
		       (uintmax_t) statbuf.st_dev,
		       (uintmax_t) statbuf.st_ino,
		       (unsigned long int) statbuf.st_nlink);
		if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode))
			printf(" Device type: %lx,%lx\n",
			       (unsigned long int) major(statbuf.st_rdev),
			       (unsigned long int) minor(statbuf.st_rdev));
		else
			putchar('\n');
		printf("Access: (%04lo/%10.10s)  Uid: (%5lu/%8s)   Gid: (%5lu/%8s)\n"
		       "Access: %s\n" "Modify: %s\n" "Change: %s\n",
		       (unsigned long int) (statbuf.st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)),
		       bb_mode_string(statbuf.st_mode),
		       (unsigned long int) statbuf.st_uid,
		       (pw_ent != 0L) ? pw_ent->pw_name : "UNKNOWN",
		       (unsigned long int) statbuf.st_gid,
		       (gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN",
		       human_time(statbuf.st_atime),
		       human_time(statbuf.st_mtime),
		       human_time(statbuf.st_ctime));
	}
#endif
	return 1;
}

int stat_main(int argc, char **argv)
{
	int i;
	char *format = NULL;
	int ok = 1;
	int (*statfunc)(char const *, char const *) = do_stat;

	flags = getopt32(argc, argv, "ftL"
		USE_FEATURE_STAT_FORMAT("c:", &format)
	);

	if (flags & 1)                /* -f */
		statfunc = do_statfs;
	if (argc == optind)           /* files */
		bb_show_usage();

	for (i = optind; i < argc; ++i)
		ok &= statfunc(argv[i], format);

	return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}