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