1 /*
2 * Copyright (c) 2002 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Andrew Brown.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 #if 0
32 #ifndef lint
33 __RCSID("$NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $"
34 "$OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $");
35 #endif
36 #endif
37
38 __FBSDID("$FreeBSD$");
39
40 #if HAVE_CONFIG_H
41 #include "config.h"
42 #else /* HAVE_CONFIG_H */
43 #define HAVE_STRUCT_STAT_ST_FLAGS 1
44 #define HAVE_STRUCT_STAT_ST_GEN 1
45 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 1
46 #define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
47 #define HAVE_DEVNAME 1
48 #endif /* HAVE_CONFIG_H */
49
50 #include <sys/param.h>
51 #include <sys/types.h>
52 #include <sys/stat.h>
53 #include <sys/mount.h>
54
55 #include <ctype.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <grp.h>
59 #include <limits.h>
60 #include <paths.h>
61 #include <pwd.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <time.h>
66 #include <unistd.h>
67
68 #if HAVE_STRUCT_STAT_ST_FLAGS
69 #define DEF_F "%#Xf "
70 #define RAW_F "%f "
71 #define SHELL_F " st_flags=%f"
72 #else /* HAVE_STRUCT_STAT_ST_FLAGS */
73 #define DEF_F
74 #define RAW_F
75 #define SHELL_F
76 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
77
78 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
79 #define DEF_B "\"%SB\" "
80 #define RAW_B "%B "
81 #define SHELL_B "st_birthtime=%B "
82 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
83 #define DEF_B
84 #define RAW_B
85 #define SHELL_B
86 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
87
88 #if HAVE_STRUCT_STAT_ST_ATIM
89 #define st_atimespec st_atim
90 #define st_ctimespec st_ctim
91 #define st_mtimespec st_mtim
92 #endif /* HAVE_STRUCT_STAT_ST_ATIM */
93
94 #define DEF_FORMAT \
95 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \
96 "%k %b " DEF_F "%N"
97 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \
98 "%k %b " RAW_F "%N"
99 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY"
100 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY"
101 #define SHELL_FORMAT \
102 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \
103 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \
104 "st_atime=%a st_mtime=%m st_ctime=%c " SHELL_B \
105 "st_blksize=%k st_blocks=%b" SHELL_F
106 #define LINUX_FORMAT \
107 " File: \"%N\"%n" \
108 " Size: %-11z FileType: %HT%n" \
109 " Mode: (%OMp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \
110 "Device: %Hd,%Ld Inode: %i Links: %l%n" \
111 "Access: %Sa%n" \
112 "Modify: %Sm%n" \
113 "Change: %Sc"
114
115 #define TIME_FORMAT "%b %e %T %Y"
116
117 #define FLAG_POUND 0x01
118 #define FLAG_SPACE 0x02
119 #define FLAG_PLUS 0x04
120 #define FLAG_ZERO 0x08
121 #define FLAG_MINUS 0x10
122
123 /*
124 * These format characters must all be unique, except the magic one.
125 */
126 #define FMT_MAGIC '%'
127 #define FMT_DOT '.'
128
129 #define SIMPLE_NEWLINE 'n'
130 #define SIMPLE_TAB 't'
131 #define SIMPLE_PERCENT '%'
132 #define SIMPLE_NUMBER '@'
133
134 #define FMT_POUND '#'
135 #define FMT_SPACE ' '
136 #define FMT_PLUS '+'
137 #define FMT_ZERO '0'
138 #define FMT_MINUS '-'
139
140 #define FMT_DECIMAL 'D'
141 #define FMT_OCTAL 'O'
142 #define FMT_UNSIGNED 'U'
143 #define FMT_HEX 'X'
144 #define FMT_FLOAT 'F'
145 #define FMT_STRING 'S'
146
147 #define FMTF_DECIMAL 0x01
148 #define FMTF_OCTAL 0x02
149 #define FMTF_UNSIGNED 0x04
150 #define FMTF_HEX 0x08
151 #define FMTF_FLOAT 0x10
152 #define FMTF_STRING 0x20
153
154 #define HIGH_PIECE 'H'
155 #define MIDDLE_PIECE 'M'
156 #define LOW_PIECE 'L'
157
158 #define SHOW_realpath 'R'
159 #define SHOW_st_dev 'd'
160 #define SHOW_st_ino 'i'
161 #define SHOW_st_mode 'p'
162 #define SHOW_st_nlink 'l'
163 #define SHOW_st_uid 'u'
164 #define SHOW_st_gid 'g'
165 #define SHOW_st_rdev 'r'
166 #define SHOW_st_atime 'a'
167 #define SHOW_st_mtime 'm'
168 #define SHOW_st_ctime 'c'
169 #define SHOW_st_btime 'B'
170 #define SHOW_st_size 'z'
171 #define SHOW_st_blocks 'b'
172 #define SHOW_st_blksize 'k'
173 #define SHOW_st_flags 'f'
174 #define SHOW_st_gen 'v'
175 #define SHOW_symlink 'Y'
176 #define SHOW_filetype 'T'
177 #define SHOW_filename 'N'
178 #define SHOW_sizerdev 'Z'
179
180 void usage(const char *);
181 void output(const struct stat *, const char *,
182 const char *, int, int);
183 int format1(const struct stat *, /* stat info */
184 const char *, /* the file name */
185 const char *, int, /* the format string itself */
186 char *, size_t, /* a place to put the output */
187 int, int, int, int, /* the parsed format */
188 int, int);
189 int hex2byte(const char [2]);
190 #if HAVE_STRUCT_STAT_ST_FLAGS
191 char *xfflagstostr(unsigned long);
192 #endif
193
194 static const char *timefmt;
195 static int linkfail;
196
197 #define addchar(s, c, nl) \
198 do { \
199 (void)fputc((c), (s)); \
200 (*nl) = ((c) == '\n'); \
201 } while (0/*CONSTCOND*/)
202
203 int
main(int argc,char * argv[])204 main(int argc, char *argv[])
205 {
206 struct stat st;
207 int ch, rc, errs, am_readlink;
208 int lsF, fmtchar, usestat, nfs_handle, fn, nonl, quiet;
209 const char *statfmt, *options, *synopsis;
210 char dname[sizeof _PATH_DEV + SPECNAMELEN] = _PATH_DEV;
211 fhandle_t fhnd;
212 const char *file;
213
214 am_readlink = 0;
215 lsF = 0;
216 fmtchar = '\0';
217 usestat = 0;
218 nfs_handle = 0;
219 nonl = 0;
220 quiet = 0;
221 linkfail = 0;
222 statfmt = NULL;
223 timefmt = NULL;
224
225 if (strcmp(getprogname(), "readlink") == 0) {
226 am_readlink = 1;
227 options = "fn";
228 synopsis = "[-fn] [file ...]";
229 statfmt = "%Y";
230 fmtchar = 'f';
231 quiet = 1;
232 } else {
233 options = "f:FHlLnqrst:x";
234 synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] "
235 "[-t timefmt] [file|handle ...]";
236 }
237
238 while ((ch = getopt(argc, argv, options)) != -1)
239 switch (ch) {
240 case 'F':
241 lsF = 1;
242 break;
243 case 'H':
244 nfs_handle = 1;
245 break;
246 case 'L':
247 usestat = 1;
248 break;
249 case 'n':
250 nonl = 1;
251 break;
252 case 'q':
253 quiet = 1;
254 break;
255 case 'f':
256 if (am_readlink) {
257 statfmt = "%R";
258 break;
259 }
260 statfmt = optarg;
261 /* FALLTHROUGH */
262 case 'l':
263 case 'r':
264 case 's':
265 case 'x':
266 if (fmtchar != 0)
267 errx(1, "can't use format '%c' with '%c'",
268 fmtchar, ch);
269 fmtchar = ch;
270 break;
271 case 't':
272 timefmt = optarg;
273 break;
274 default:
275 usage(synopsis);
276 }
277
278 argc -= optind;
279 argv += optind;
280 fn = 1;
281
282 if (fmtchar == '\0') {
283 if (lsF)
284 fmtchar = 'l';
285 else {
286 fmtchar = 'f';
287 statfmt = DEF_FORMAT;
288 }
289 }
290
291 if (lsF && fmtchar != 'l')
292 errx(1, "can't use format '%c' with -F", fmtchar);
293
294 switch (fmtchar) {
295 case 'f':
296 /* statfmt already set */
297 break;
298 case 'l':
299 statfmt = lsF ? LSF_FORMAT : LS_FORMAT;
300 break;
301 case 'r':
302 statfmt = RAW_FORMAT;
303 break;
304 case 's':
305 statfmt = SHELL_FORMAT;
306 break;
307 case 'x':
308 statfmt = LINUX_FORMAT;
309 if (timefmt == NULL)
310 timefmt = "%c";
311 break;
312 default:
313 usage(synopsis);
314 /*NOTREACHED*/
315 }
316
317 if (timefmt == NULL)
318 timefmt = TIME_FORMAT;
319
320 errs = 0;
321 do {
322 if (argc == 0) {
323 if (fdevname_r(STDIN_FILENO, dname +
324 sizeof _PATH_DEV - 1, SPECNAMELEN) != NULL)
325 file = dname;
326 else
327 file = "(stdin)";
328 rc = fstat(STDIN_FILENO, &st);
329 } else {
330 int j;
331
332 file = argv[0];
333 if (nfs_handle) {
334 rc = 0;
335 bzero(&fhnd, sizeof(fhnd));
336 j = MIN(2 * sizeof(fhnd), strlen(file));
337 if ((j & 1) != 0) {
338 rc = -1;
339 } else {
340 while (j) {
341 rc = hex2byte(&file[j - 2]);
342 if (rc == -1)
343 break;
344 ((char*) &fhnd)[j / 2 - 1] = rc;
345 j -= 2;
346 }
347 }
348 if (rc == -1)
349 errno = EINVAL;
350 else
351 rc = fhstat(&fhnd, &st);
352
353 } else if (usestat) {
354 /*
355 * Try stat() and if it fails, fall back to
356 * lstat() just in case we're examining a
357 * broken symlink.
358 */
359 if ((rc = stat(file, &st)) == -1 &&
360 errno == ENOENT &&
361 (rc = lstat(file, &st)) == -1)
362 errno = ENOENT;
363 }
364 else
365 rc = lstat(file, &st);
366 }
367
368 if (rc == -1) {
369 errs = 1;
370 linkfail = 1;
371 if (!quiet)
372 warn("%s: stat", file);
373 }
374 else
375 output(&st, file, statfmt, fn, nonl);
376
377 argv++;
378 argc--;
379 fn++;
380 } while (argc > 0);
381
382 return (am_readlink ? linkfail : errs);
383 }
384
385 #if HAVE_STRUCT_STAT_ST_FLAGS
386 /*
387 * fflagstostr() wrapper that leaks only once
388 */
389 char *
xfflagstostr(unsigned long fflags)390 xfflagstostr(unsigned long fflags)
391 {
392 static char *str = NULL;
393
394 if (str != NULL)
395 free(str);
396
397 str = fflagstostr(fflags);
398 if (str == NULL)
399 err(1, "fflagstostr");
400 return (str);
401 }
402 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
403
404 void
usage(const char * synopsis)405 usage(const char *synopsis)
406 {
407
408 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);
409 exit(1);
410 }
411
412 /*
413 * Parses a format string.
414 */
415 void
output(const struct stat * st,const char * file,const char * statfmt,int fn,int nonl)416 output(const struct stat *st, const char *file,
417 const char *statfmt, int fn, int nonl)
418 {
419 int flags, size, prec, ofmt, hilo, what;
420 char buf[PATH_MAX + 4 + 1];
421 const char *subfmt;
422 int nl, t, i;
423
424 nl = 1;
425 while (*statfmt != '\0') {
426
427 /*
428 * Non-format characters go straight out.
429 */
430 if (*statfmt != FMT_MAGIC) {
431 addchar(stdout, *statfmt, &nl);
432 statfmt++;
433 continue;
434 }
435
436 /*
437 * The current format "substring" starts here,
438 * and then we skip the magic.
439 */
440 subfmt = statfmt;
441 statfmt++;
442
443 /*
444 * Some simple one-character "formats".
445 */
446 switch (*statfmt) {
447 case SIMPLE_NEWLINE:
448 addchar(stdout, '\n', &nl);
449 statfmt++;
450 continue;
451 case SIMPLE_TAB:
452 addchar(stdout, '\t', &nl);
453 statfmt++;
454 continue;
455 case SIMPLE_PERCENT:
456 addchar(stdout, '%', &nl);
457 statfmt++;
458 continue;
459 case SIMPLE_NUMBER: {
460 char num[12], *p;
461
462 snprintf(num, sizeof(num), "%d", fn);
463 for (p = &num[0]; *p; p++)
464 addchar(stdout, *p, &nl);
465 statfmt++;
466 continue;
467 }
468 }
469
470 /*
471 * This must be an actual format string. Format strings are
472 * similar to printf(3) formats up to a point, and are of
473 * the form:
474 *
475 * % required start of format
476 * [-# +0] opt. format characters
477 * size opt. field width
478 * . opt. decimal separator, followed by
479 * prec opt. precision
480 * fmt opt. output specifier (string, numeric, etc.)
481 * sub opt. sub field specifier (high, middle, low)
482 * datum required field specifier (size, mode, etc)
483 *
484 * Only the % and the datum selector are required. All data
485 * have reasonable default output forms. The "sub" specifier
486 * only applies to certain data (mode, dev, rdev, filetype).
487 * The symlink output defaults to STRING, yet will only emit
488 * the leading " -> " if STRING is explicitly specified. The
489 * sizerdev datum will generate rdev output for character or
490 * block devices, and size output for all others.
491 */
492 flags = 0;
493 do {
494 if (*statfmt == FMT_POUND)
495 flags |= FLAG_POUND;
496 else if (*statfmt == FMT_SPACE)
497 flags |= FLAG_SPACE;
498 else if (*statfmt == FMT_PLUS)
499 flags |= FLAG_PLUS;
500 else if (*statfmt == FMT_ZERO)
501 flags |= FLAG_ZERO;
502 else if (*statfmt == FMT_MINUS)
503 flags |= FLAG_MINUS;
504 else
505 break;
506 statfmt++;
507 } while (1/*CONSTCOND*/);
508
509 size = -1;
510 if (isdigit((unsigned)*statfmt)) {
511 size = 0;
512 while (isdigit((unsigned)*statfmt)) {
513 size = (size * 10) + (*statfmt - '0');
514 statfmt++;
515 if (size < 0)
516 goto badfmt;
517 }
518 }
519
520 prec = -1;
521 if (*statfmt == FMT_DOT) {
522 statfmt++;
523
524 prec = 0;
525 while (isdigit((unsigned)*statfmt)) {
526 prec = (prec * 10) + (*statfmt - '0');
527 statfmt++;
528 if (prec < 0)
529 goto badfmt;
530 }
531 }
532
533 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break
534 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break
535 switch (*statfmt) {
536 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL);
537 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL);
538 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED);
539 fmtcasef(ofmt, FMT_HEX, FMTF_HEX);
540 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT);
541 fmtcasef(ofmt, FMT_STRING, FMTF_STRING);
542 default:
543 ofmt = 0;
544 break;
545 }
546
547 switch (*statfmt) {
548 fmtcase(hilo, HIGH_PIECE);
549 fmtcase(hilo, MIDDLE_PIECE);
550 fmtcase(hilo, LOW_PIECE);
551 default:
552 hilo = 0;
553 break;
554 }
555
556 switch (*statfmt) {
557 fmtcase(what, SHOW_realpath);
558 fmtcase(what, SHOW_st_dev);
559 fmtcase(what, SHOW_st_ino);
560 fmtcase(what, SHOW_st_mode);
561 fmtcase(what, SHOW_st_nlink);
562 fmtcase(what, SHOW_st_uid);
563 fmtcase(what, SHOW_st_gid);
564 fmtcase(what, SHOW_st_rdev);
565 fmtcase(what, SHOW_st_atime);
566 fmtcase(what, SHOW_st_mtime);
567 fmtcase(what, SHOW_st_ctime);
568 fmtcase(what, SHOW_st_btime);
569 fmtcase(what, SHOW_st_size);
570 fmtcase(what, SHOW_st_blocks);
571 fmtcase(what, SHOW_st_blksize);
572 fmtcase(what, SHOW_st_flags);
573 fmtcase(what, SHOW_st_gen);
574 fmtcase(what, SHOW_symlink);
575 fmtcase(what, SHOW_filetype);
576 fmtcase(what, SHOW_filename);
577 fmtcase(what, SHOW_sizerdev);
578 default:
579 goto badfmt;
580 }
581 #undef fmtcasef
582 #undef fmtcase
583
584 t = format1(st,
585 file,
586 subfmt, statfmt - subfmt,
587 buf, sizeof(buf),
588 flags, size, prec, ofmt, hilo, what);
589
590 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++)
591 addchar(stdout, buf[i], &nl);
592
593 continue;
594
595 badfmt:
596 errx(1, "%.*s: bad format",
597 (int)(statfmt - subfmt + 1), subfmt);
598 }
599
600 if (!nl && !nonl)
601 (void)fputc('\n', stdout);
602 (void)fflush(stdout);
603 }
604
605 /*
606 * Arranges output according to a single parsed format substring.
607 */
608 int
format1(const struct stat * st,const char * file,const char * fmt,int flen,char * buf,size_t blen,int flags,int size,int prec,int ofmt,int hilo,int what)609 format1(const struct stat *st,
610 const char *file,
611 const char *fmt, int flen,
612 char *buf, size_t blen,
613 int flags, int size, int prec, int ofmt,
614 int hilo, int what)
615 {
616 u_int64_t data;
617 char *stmp, lfmt[24], tmp[20];
618 const char *sdata;
619 char smode[12], sid[12], path[PATH_MAX + 4];
620 struct passwd *pw;
621 struct group *gr;
622 const struct timespec *tsp;
623 struct timespec ts;
624 struct tm *tm;
625 int l, small, formats;
626
627 tsp = NULL;
628 formats = 0;
629 small = 0;
630
631 /*
632 * First, pick out the data and tweak it based on hilo or
633 * specified output format (symlink output only).
634 */
635 switch (what) {
636 case SHOW_st_dev:
637 case SHOW_st_rdev:
638 small = (sizeof(st->st_dev) == 4);
639 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev;
640 #if HAVE_DEVNAME
641 sdata = (what == SHOW_st_dev) ?
642 devname(st->st_dev, S_IFBLK) :
643 devname(st->st_rdev,
644 S_ISCHR(st->st_mode) ? S_IFCHR :
645 S_ISBLK(st->st_mode) ? S_IFBLK :
646 0U);
647 if (sdata == NULL)
648 sdata = "???";
649 #endif /* HAVE_DEVNAME */
650 if (hilo == HIGH_PIECE) {
651 data = major(data);
652 hilo = 0;
653 }
654 else if (hilo == LOW_PIECE) {
655 data = minor((unsigned)data);
656 hilo = 0;
657 }
658 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
659 #if HAVE_DEVNAME
660 FMTF_STRING;
661 #else /* HAVE_DEVNAME */
662 0;
663 #endif /* HAVE_DEVNAME */
664 if (ofmt == 0)
665 ofmt = FMTF_UNSIGNED;
666 break;
667 case SHOW_st_ino:
668 small = (sizeof(st->st_ino) == 4);
669 data = st->st_ino;
670 sdata = NULL;
671 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
672 if (ofmt == 0)
673 ofmt = FMTF_UNSIGNED;
674 break;
675 case SHOW_st_mode:
676 small = (sizeof(st->st_mode) == 4);
677 data = st->st_mode;
678 strmode(st->st_mode, smode);
679 stmp = smode;
680 l = strlen(stmp);
681 if (stmp[l - 1] == ' ')
682 stmp[--l] = '\0';
683 if (hilo == HIGH_PIECE) {
684 data >>= 12;
685 stmp += 1;
686 stmp[3] = '\0';
687 hilo = 0;
688 }
689 else if (hilo == MIDDLE_PIECE) {
690 data = (data >> 9) & 07;
691 stmp += 4;
692 stmp[3] = '\0';
693 hilo = 0;
694 }
695 else if (hilo == LOW_PIECE) {
696 data &= 0777;
697 stmp += 7;
698 stmp[3] = '\0';
699 hilo = 0;
700 }
701 sdata = stmp;
702 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
703 FMTF_STRING;
704 if (ofmt == 0)
705 ofmt = FMTF_OCTAL;
706 break;
707 case SHOW_st_nlink:
708 small = (sizeof(st->st_dev) == 4);
709 data = st->st_nlink;
710 sdata = NULL;
711 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
712 if (ofmt == 0)
713 ofmt = FMTF_UNSIGNED;
714 break;
715 case SHOW_st_uid:
716 small = (sizeof(st->st_uid) == 4);
717 data = st->st_uid;
718 if ((pw = getpwuid(st->st_uid)) != NULL)
719 sdata = pw->pw_name;
720 else {
721 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
722 sdata = sid;
723 }
724 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
725 FMTF_STRING;
726 if (ofmt == 0)
727 ofmt = FMTF_UNSIGNED;
728 break;
729 case SHOW_st_gid:
730 small = (sizeof(st->st_gid) == 4);
731 data = st->st_gid;
732 if ((gr = getgrgid(st->st_gid)) != NULL)
733 sdata = gr->gr_name;
734 else {
735 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
736 sdata = sid;
737 }
738 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
739 FMTF_STRING;
740 if (ofmt == 0)
741 ofmt = FMTF_UNSIGNED;
742 break;
743 case SHOW_st_atime:
744 tsp = &st->st_atimespec;
745 /* FALLTHROUGH */
746 case SHOW_st_mtime:
747 if (tsp == NULL)
748 tsp = &st->st_mtimespec;
749 /* FALLTHROUGH */
750 case SHOW_st_ctime:
751 if (tsp == NULL)
752 tsp = &st->st_ctimespec;
753 /* FALLTHROUGH */
754 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
755 case SHOW_st_btime:
756 if (tsp == NULL)
757 tsp = &st->st_birthtimespec;
758 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
759 ts = *tsp; /* copy so we can muck with it */
760 small = (sizeof(ts.tv_sec) == 4);
761 data = ts.tv_sec;
762 tm = localtime(&ts.tv_sec);
763 if (tm == NULL) {
764 ts.tv_sec = 0;
765 tm = localtime(&ts.tv_sec);
766 }
767 (void)strftime(path, sizeof(path), timefmt, tm);
768 sdata = path;
769 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
770 FMTF_FLOAT | FMTF_STRING;
771 if (ofmt == 0)
772 ofmt = FMTF_DECIMAL;
773 break;
774 case SHOW_st_size:
775 small = (sizeof(st->st_size) == 4);
776 data = st->st_size;
777 sdata = NULL;
778 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
779 if (ofmt == 0)
780 ofmt = FMTF_UNSIGNED;
781 break;
782 case SHOW_st_blocks:
783 small = (sizeof(st->st_blocks) == 4);
784 data = st->st_blocks;
785 sdata = NULL;
786 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
787 if (ofmt == 0)
788 ofmt = FMTF_UNSIGNED;
789 break;
790 case SHOW_st_blksize:
791 small = (sizeof(st->st_blksize) == 4);
792 data = st->st_blksize;
793 sdata = NULL;
794 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
795 if (ofmt == 0)
796 ofmt = FMTF_UNSIGNED;
797 break;
798 #if HAVE_STRUCT_STAT_ST_FLAGS
799 case SHOW_st_flags:
800 small = (sizeof(st->st_flags) == 4);
801 data = st->st_flags;
802 sdata = xfflagstostr(st->st_flags);
803 if (*sdata == '\0')
804 sdata = "-";
805 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
806 FMTF_STRING;
807 if (ofmt == 0)
808 ofmt = FMTF_UNSIGNED;
809 break;
810 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
811 #if HAVE_STRUCT_STAT_ST_GEN
812 case SHOW_st_gen:
813 small = (sizeof(st->st_gen) == 4);
814 data = st->st_gen;
815 sdata = NULL;
816 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
817 if (ofmt == 0)
818 ofmt = FMTF_UNSIGNED;
819 break;
820 #endif /* HAVE_STRUCT_STAT_ST_GEN */
821 case SHOW_realpath:
822 small = 0;
823 data = 0;
824 if (file == NULL) {
825 (void)strlcpy(path, "(stdin)", sizeof(path));
826 sdata = path;
827 } else {
828 snprintf(path, sizeof(path), " -> ");
829 if (realpath(file, path + 4) == NULL) {
830 linkfail = 1;
831 l = 0;
832 path[0] = '\0';
833 }
834 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
835 }
836
837 formats = FMTF_STRING;
838 if (ofmt == 0)
839 ofmt = FMTF_STRING;
840 break;
841 case SHOW_symlink:
842 small = 0;
843 data = 0;
844 if (S_ISLNK(st->st_mode)) {
845 snprintf(path, sizeof(path), " -> ");
846 l = readlink(file, path + 4, sizeof(path) - 4 - 1);
847 if (l == -1) {
848 linkfail = 1;
849 l = 0;
850 path[0] = '\0';
851 }
852 path[l + 4] = '\0';
853 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
854 }
855 else {
856 linkfail = 1;
857 sdata = "";
858 }
859 formats = FMTF_STRING;
860 if (ofmt == 0)
861 ofmt = FMTF_STRING;
862 break;
863 case SHOW_filetype:
864 small = 0;
865 data = 0;
866 sdata = "";
867 if (hilo == 0 || hilo == LOW_PIECE) {
868 switch (st->st_mode & S_IFMT) {
869 case S_IFIFO: sdata = "|"; break;
870 case S_IFDIR: sdata = "/"; break;
871 case S_IFREG:
872 if (st->st_mode &
873 (S_IXUSR | S_IXGRP | S_IXOTH))
874 sdata = "*";
875 break;
876 case S_IFLNK: sdata = "@"; break;
877 case S_IFSOCK: sdata = "="; break;
878 #ifdef S_IFWHT
879 case S_IFWHT: sdata = "%"; break;
880 #endif /* S_IFWHT */
881 #ifdef S_IFDOOR
882 case S_IFDOOR: sdata = ">"; break;
883 #endif /* S_IFDOOR */
884 }
885 hilo = 0;
886 }
887 else if (hilo == HIGH_PIECE) {
888 switch (st->st_mode & S_IFMT) {
889 case S_IFIFO: sdata = "Fifo File"; break;
890 case S_IFCHR: sdata = "Character Device"; break;
891 case S_IFDIR: sdata = "Directory"; break;
892 case S_IFBLK: sdata = "Block Device"; break;
893 case S_IFREG: sdata = "Regular File"; break;
894 case S_IFLNK: sdata = "Symbolic Link"; break;
895 case S_IFSOCK: sdata = "Socket"; break;
896 #ifdef S_IFWHT
897 case S_IFWHT: sdata = "Whiteout File"; break;
898 #endif /* S_IFWHT */
899 #ifdef S_IFDOOR
900 case S_IFDOOR: sdata = "Door"; break;
901 #endif /* S_IFDOOR */
902 default: sdata = "???"; break;
903 }
904 hilo = 0;
905 }
906 formats = FMTF_STRING;
907 if (ofmt == 0)
908 ofmt = FMTF_STRING;
909 break;
910 case SHOW_filename:
911 small = 0;
912 data = 0;
913 (void)strlcpy(path, file, sizeof(path));
914 sdata = path;
915 formats = FMTF_STRING;
916 if (ofmt == 0)
917 ofmt = FMTF_STRING;
918 break;
919 case SHOW_sizerdev:
920 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
921 char majdev[20], mindev[20];
922 int l1, l2;
923
924 l1 = format1(st,
925 file,
926 fmt, flen,
927 majdev, sizeof(majdev),
928 flags, size, prec,
929 ofmt, HIGH_PIECE, SHOW_st_rdev);
930 l2 = format1(st,
931 file,
932 fmt, flen,
933 mindev, sizeof(mindev),
934 flags, size, prec,
935 ofmt, LOW_PIECE, SHOW_st_rdev);
936 return (snprintf(buf, blen, "%.*s,%.*s",
937 l1, majdev, l2, mindev));
938 }
939 else {
940 return (format1(st,
941 file,
942 fmt, flen,
943 buf, blen,
944 flags, size, prec,
945 ofmt, 0, SHOW_st_size));
946 }
947 /*NOTREACHED*/
948 default:
949 errx(1, "%.*s: bad format", (int)flen, fmt);
950 }
951
952 /*
953 * If a subdatum was specified but not supported, or an output
954 * format was selected that is not supported, that's an error.
955 */
956 if (hilo != 0 || (ofmt & formats) == 0)
957 errx(1, "%.*s: bad format", (int)flen, fmt);
958
959 /*
960 * Assemble the format string for passing to printf(3).
961 */
962 lfmt[0] = '\0';
963 (void)strcat(lfmt, "%");
964 if (flags & FLAG_POUND)
965 (void)strcat(lfmt, "#");
966 if (flags & FLAG_SPACE)
967 (void)strcat(lfmt, " ");
968 if (flags & FLAG_PLUS)
969 (void)strcat(lfmt, "+");
970 if (flags & FLAG_MINUS)
971 (void)strcat(lfmt, "-");
972 if (flags & FLAG_ZERO)
973 (void)strcat(lfmt, "0");
974
975 /*
976 * Only the timespecs support the FLOAT output format, and that
977 * requires work that differs from the other formats.
978 */
979 if (ofmt == FMTF_FLOAT) {
980 /*
981 * Nothing after the decimal point, so just print seconds.
982 */
983 if (prec == 0) {
984 if (size != -1) {
985 (void)snprintf(tmp, sizeof(tmp), "%d", size);
986 (void)strcat(lfmt, tmp);
987 }
988 (void)strcat(lfmt, "lld");
989 return (snprintf(buf, blen, lfmt,
990 (long long)ts.tv_sec));
991 }
992
993 /*
994 * Unspecified precision gets all the precision we have:
995 * 9 digits.
996 */
997 if (prec == -1)
998 prec = 9;
999
1000 /*
1001 * Adjust the size for the decimal point and the digits
1002 * that will follow.
1003 */
1004 size -= prec + 1;
1005
1006 /*
1007 * Any leftover size that's legitimate will be used.
1008 */
1009 if (size > 0) {
1010 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1011 (void)strcat(lfmt, tmp);
1012 }
1013 /* Seconds: time_t cast to long long. */
1014 (void)strcat(lfmt, "lld");
1015
1016 /*
1017 * The stuff after the decimal point always needs zero
1018 * filling.
1019 */
1020 (void)strcat(lfmt, ".%0");
1021
1022 /*
1023 * We can "print" at most nine digits of precision. The
1024 * rest we will pad on at the end.
1025 *
1026 * Nanoseconds: long.
1027 */
1028 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec);
1029 (void)strcat(lfmt, tmp);
1030
1031 /*
1032 * For precision of less that nine digits, trim off the
1033 * less significant figures.
1034 */
1035 for (; prec < 9; prec++)
1036 ts.tv_nsec /= 10;
1037
1038 /*
1039 * Use the format, and then tack on any zeroes that
1040 * might be required to make up the requested precision.
1041 */
1042 l = snprintf(buf, blen, lfmt, (long long)ts.tv_sec, ts.tv_nsec);
1043 for (; prec > 9 && l < (int)blen; prec--, l++)
1044 (void)strcat(buf, "0");
1045 return (l);
1046 }
1047
1048 /*
1049 * Add on size and precision, if specified, to the format.
1050 */
1051 if (size != -1) {
1052 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1053 (void)strcat(lfmt, tmp);
1054 }
1055 if (prec != -1) {
1056 (void)snprintf(tmp, sizeof(tmp), ".%d", prec);
1057 (void)strcat(lfmt, tmp);
1058 }
1059
1060 /*
1061 * String output uses the temporary sdata.
1062 */
1063 if (ofmt == FMTF_STRING) {
1064 if (sdata == NULL)
1065 errx(1, "%.*s: bad format", (int)flen, fmt);
1066 (void)strcat(lfmt, "s");
1067 return (snprintf(buf, blen, lfmt, sdata));
1068 }
1069
1070 /*
1071 * Ensure that sign extension does not cause bad looking output
1072 * for some forms.
1073 */
1074 if (small && ofmt != FMTF_DECIMAL)
1075 data = (u_int32_t)data;
1076
1077 /*
1078 * The four "numeric" output forms.
1079 */
1080 (void)strcat(lfmt, "ll");
1081 switch (ofmt) {
1082 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break;
1083 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break;
1084 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break;
1085 case FMTF_HEX: (void)strcat(lfmt, "x"); break;
1086 }
1087
1088 return (snprintf(buf, blen, lfmt, data));
1089 }
1090
1091
1092 #define hex2nibble(c) (c <= '9' ? c - '0' : toupper(c) - 'A' + 10)
1093 int
hex2byte(const char c[2])1094 hex2byte(const char c[2]) {
1095 if (!(ishexnumber(c[0]) && ishexnumber(c[1])))
1096 return -1;
1097 return (hex2nibble(c[0]) << 4) + hex2nibble(c[1]);
1098 }
1099