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