1 /* $NetBSD: stat.c,v 1.38 2013/01/03 13:28:41 dsl Exp $ */
2
3 /*
4 * Copyright (c) 2002-2011 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 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 /* config checked libc, we need the prototype as well */
35 #undef HAVE_DEVNAME
36 #endif
37
38 #include <sys/cdefs.h>
39 #if !defined(lint)
40 __RCSID("$NetBSD: stat.c,v 1.38 2013/01/03 13:28:41 dsl Exp $");
41 #endif
42
43 #if ! HAVE_NBTOOL_CONFIG_H
44 #define HAVE_STRUCT_STAT_ST_FLAGS 1
45 #define HAVE_STRUCT_STAT_ST_GEN 1
46 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 1
47 #define HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 1
48 #define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
49 #define HAVE_DEVNAME 1
50 #endif /* HAVE_NBTOOL_CONFIG_H */
51
52 #include <sys/types.h>
53 #include <sys/stat.h>
54
55 #include <ctype.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <grp.h>
59 #include <limits.h>
60 #include <pwd.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <time.h>
65 #include <unistd.h>
66 #include <vis.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=%SB "
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=%Sa st_mtime=%Sm st_ctime=%Sc " 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: (%04OLp/%.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 static void usage(const char *) __dead;
181 static void output(const struct stat *, const char *,
182 const char *, int, int, int);
183 static 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, int);
189
190 static const char *timefmt;
191 static int linkfail;
192
193 #define addchar(s, c, nl) \
194 do { \
195 (void)fputc((c), (s)); \
196 (*nl) = ((c) == '\n'); \
197 } while (0/*CONSTCOND*/)
198
199 int
main(int argc,char * argv[])200 main(int argc, char *argv[])
201 {
202 struct stat st;
203 int ch, rc, errs, am_readlink;
204 int lsF, fmtchar, usestat, fn, nonl, quiet;
205 const char *statfmt, *options, *synopsis;
206
207 am_readlink = 0;
208 lsF = 0;
209 fmtchar = '\0';
210 usestat = 0;
211 nonl = 0;
212 quiet = 0;
213 linkfail = 0;
214 statfmt = NULL;
215 timefmt = NULL;
216
217 setprogname(argv[0]);
218
219 if (strcmp(getprogname(), "readlink") == 0) {
220 am_readlink = 1;
221 options = "fnqsv";
222 synopsis = "[-fnqsv] [file ...]";
223 statfmt = "%Y";
224 fmtchar = 'f';
225 quiet = 1;
226 } else {
227 options = "f:FlLnqrst:x";
228 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]";
229 }
230
231 while ((ch = getopt(argc, argv, options)) != -1)
232 switch (ch) {
233 case 'F':
234 lsF = 1;
235 break;
236 case 'L':
237 usestat = 1;
238 break;
239 case 'n':
240 nonl = 1;
241 break;
242 case 'q':
243 quiet = 1;
244 break;
245 case 'f':
246 if (am_readlink) {
247 statfmt = "%R";
248 break;
249 }
250 statfmt = optarg;
251 /* FALLTHROUGH */
252 case 'l':
253 case 'r':
254 case 's':
255 if (am_readlink) {
256 quiet = 1;
257 break;
258 }
259 /*FALLTHROUGH*/
260 case 'x':
261 if (fmtchar != 0)
262 errx(1, "can't use format '%c' with '%c'",
263 fmtchar, ch);
264 fmtchar = ch;
265 break;
266 case 't':
267 timefmt = optarg;
268 break;
269 case 'v':
270 quiet = 0;
271 break;
272 default:
273 usage(synopsis);
274 }
275
276 argc -= optind;
277 argv += optind;
278 fn = 1;
279
280 if (fmtchar == '\0') {
281 if (lsF)
282 fmtchar = 'l';
283 else {
284 fmtchar = 'f';
285 statfmt = DEF_FORMAT;
286 }
287 }
288
289 if (lsF && fmtchar != 'l')
290 errx(1, "can't use format '%c' with -F", fmtchar);
291
292 switch (fmtchar) {
293 case 'f':
294 /* statfmt already set */
295 break;
296 case 'l':
297 statfmt = lsF ? LSF_FORMAT : LS_FORMAT;
298 break;
299 case 'r':
300 statfmt = RAW_FORMAT;
301 break;
302 case 's':
303 statfmt = SHELL_FORMAT;
304 if (timefmt == NULL)
305 timefmt = "%s";
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 rc = fstat(STDIN_FILENO, &st);
324 else if (usestat) {
325 /*
326 * Try stat() and if it fails, fall back to
327 * lstat() just in case we're examining a
328 * broken symlink.
329 */
330 if ((rc = stat(argv[0], &st)) == -1 &&
331 errno == ENOENT &&
332 (rc = lstat(argv[0], &st)) == -1)
333 errno = ENOENT;
334 }
335 else
336 rc = lstat(argv[0], &st);
337
338 if (rc == -1) {
339 errs = 1;
340 linkfail = 1;
341 if (!quiet)
342 warn("%s: %s",
343 argc == 0 ? "(stdin)" : argv[0],
344 usestat ? "stat" : "lstat");
345 }
346 else
347 output(&st, argv[0], statfmt, fn, nonl, quiet);
348
349 argv++;
350 argc--;
351 fn++;
352 } while (argc > 0);
353
354 return (am_readlink ? linkfail : errs);
355 }
356
357 static void
usage(const char * synopsis)358 usage(const char *synopsis)
359 {
360
361 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);
362 exit(1);
363 }
364
365 /*
366 * Parses a format string.
367 */
368 static void
output(const struct stat * st,const char * file,const char * statfmt,int fn,int nonl,int quiet)369 output(const struct stat *st, const char *file,
370 const char *statfmt, int fn, int nonl, int quiet)
371 {
372 int flags, size, prec, ofmt, hilo, what;
373 /*
374 * buf size is enough for an item of length PATH_MAX,
375 * multiplied by 4 for vis encoding, plus 4 for symlink
376 * " -> " prefix, plus 1 for \0 terminator.
377 */
378 char buf[PATH_MAX * 4 + 4 + 1];
379 const char *subfmt;
380 int nl, t, i;
381
382 nl = 1;
383 while (*statfmt != '\0') {
384
385 /*
386 * Non-format characters go straight out.
387 */
388 if (*statfmt != FMT_MAGIC) {
389 addchar(stdout, *statfmt, &nl);
390 statfmt++;
391 continue;
392 }
393
394 /*
395 * The current format "substring" starts here,
396 * and then we skip the magic.
397 */
398 subfmt = statfmt;
399 statfmt++;
400
401 /*
402 * Some simple one-character "formats".
403 */
404 switch (*statfmt) {
405 case SIMPLE_NEWLINE:
406 addchar(stdout, '\n', &nl);
407 statfmt++;
408 continue;
409 case SIMPLE_TAB:
410 addchar(stdout, '\t', &nl);
411 statfmt++;
412 continue;
413 case SIMPLE_PERCENT:
414 addchar(stdout, '%', &nl);
415 statfmt++;
416 continue;
417 case SIMPLE_NUMBER: {
418 char num[12], *p;
419
420 snprintf(num, sizeof(num), "%d", fn);
421 for (p = &num[0]; *p; p++)
422 addchar(stdout, *p, &nl);
423 statfmt++;
424 continue;
425 }
426 }
427
428 /*
429 * This must be an actual format string. Format strings are
430 * similar to printf(3) formats up to a point, and are of
431 * the form:
432 *
433 * % required start of format
434 * [-# +0] opt. format characters
435 * size opt. field width
436 * . opt. decimal separator, followed by
437 * prec opt. precision
438 * fmt opt. output specifier (string, numeric, etc.)
439 * sub opt. sub field specifier (high, middle, low)
440 * datum required field specifier (size, mode, etc)
441 *
442 * Only the % and the datum selector are required. All data
443 * have reasonable default output forms. The "sub" specifier
444 * only applies to certain data (mode, dev, rdev, filetype).
445 * The symlink output defaults to STRING, yet will only emit
446 * the leading " -> " if STRING is explicitly specified. The
447 * sizerdev datum will generate rdev output for character or
448 * block devices, and size output for all others.
449 * For STRING output, the # format requests vis encoding.
450 */
451 flags = 0;
452 do {
453 if (*statfmt == FMT_POUND)
454 flags |= FLAG_POUND;
455 else if (*statfmt == FMT_SPACE)
456 flags |= FLAG_SPACE;
457 else if (*statfmt == FMT_PLUS)
458 flags |= FLAG_PLUS;
459 else if (*statfmt == FMT_ZERO)
460 flags |= FLAG_ZERO;
461 else if (*statfmt == FMT_MINUS)
462 flags |= FLAG_MINUS;
463 else
464 break;
465 statfmt++;
466 } while (1/*CONSTCOND*/);
467
468 size = -1;
469 if (isdigit((unsigned)*statfmt)) {
470 size = 0;
471 while (isdigit((unsigned)*statfmt)) {
472 size = (size * 10) + (*statfmt - '0');
473 statfmt++;
474 if (size < 0)
475 goto badfmt;
476 }
477 }
478
479 prec = -1;
480 if (*statfmt == FMT_DOT) {
481 statfmt++;
482
483 prec = 0;
484 while (isdigit((unsigned)*statfmt)) {
485 prec = (prec * 10) + (*statfmt - '0');
486 statfmt++;
487 if (prec < 0)
488 goto badfmt;
489 }
490 }
491
492 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break
493 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break
494 switch (*statfmt) {
495 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL);
496 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL);
497 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED);
498 fmtcasef(ofmt, FMT_HEX, FMTF_HEX);
499 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT);
500 fmtcasef(ofmt, FMT_STRING, FMTF_STRING);
501 default:
502 ofmt = 0;
503 break;
504 }
505
506 switch (*statfmt) {
507 fmtcase(hilo, HIGH_PIECE);
508 fmtcase(hilo, MIDDLE_PIECE);
509 fmtcase(hilo, LOW_PIECE);
510 default:
511 hilo = 0;
512 break;
513 }
514
515 switch (*statfmt) {
516 fmtcase(what, SHOW_realpath);
517 fmtcase(what, SHOW_st_dev);
518 fmtcase(what, SHOW_st_ino);
519 fmtcase(what, SHOW_st_mode);
520 fmtcase(what, SHOW_st_nlink);
521 fmtcase(what, SHOW_st_uid);
522 fmtcase(what, SHOW_st_gid);
523 fmtcase(what, SHOW_st_rdev);
524 fmtcase(what, SHOW_st_atime);
525 fmtcase(what, SHOW_st_mtime);
526 fmtcase(what, SHOW_st_ctime);
527 fmtcase(what, SHOW_st_btime);
528 fmtcase(what, SHOW_st_size);
529 fmtcase(what, SHOW_st_blocks);
530 fmtcase(what, SHOW_st_blksize);
531 fmtcase(what, SHOW_st_flags);
532 fmtcase(what, SHOW_st_gen);
533 fmtcase(what, SHOW_symlink);
534 fmtcase(what, SHOW_filetype);
535 fmtcase(what, SHOW_filename);
536 fmtcase(what, SHOW_sizerdev);
537 default:
538 goto badfmt;
539 }
540 #undef fmtcasef
541 #undef fmtcase
542
543 t = format1(st,
544 file,
545 subfmt, statfmt - subfmt,
546 buf, sizeof(buf),
547 flags, size, prec, ofmt, hilo, what, quiet);
548
549 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++)
550 addchar(stdout, buf[i], &nl);
551
552 continue;
553
554 badfmt:
555 errx(1, "%.*s: bad format",
556 (int)(statfmt - subfmt + 1), subfmt);
557 }
558
559 if (!nl && !nonl)
560 (void)fputc('\n', stdout);
561 (void)fflush(stdout);
562 }
563
564 /*
565 * Arranges output according to a single parsed format substring.
566 */
567 static 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,int quiet)568 format1(const struct stat *st,
569 const char *file,
570 const char *fmt, int flen,
571 char *buf, size_t blen,
572 int flags, int size, int prec, int ofmt,
573 int hilo, int what, int quiet)
574 {
575 u_int64_t data;
576 char *stmp, lfmt[24], tmp[20];
577 const char *sdata;
578 char smode[12], sid[12], path[PATH_MAX + 4], visbuf[PATH_MAX * 4 + 4];
579 struct passwd *pw;
580 struct group *gr;
581 struct tm *tm;
582 time_t secs;
583 long nsecs;
584 int l;
585 int formats; /* bitmap of allowed formats for this datum */
586 int small; /* true if datum is a small integer */
587 int gottime; /* true if secs and nsecs are valid */
588 int shift; /* powers of 2 to scale numbers before printing */
589 size_t prefixlen; /* length of constant prefix for string data */
590
591 formats = 0;
592 small = 0;
593 gottime = 0;
594 secs = 0;
595 nsecs = 0;
596 shift = 0;
597 prefixlen = 0;
598
599 /*
600 * First, pick out the data and tweak it based on hilo or
601 * specified output format (symlink output only).
602 */
603 switch (what) {
604 case SHOW_st_dev:
605 case SHOW_st_rdev:
606 small = (sizeof(st->st_dev) == 4);
607 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev;
608 #if HAVE_DEVNAME
609 sdata = (what == SHOW_st_dev) ?
610 devname(st->st_dev, S_IFBLK) :
611 devname(st->st_rdev,
612 S_ISCHR(st->st_mode) ? S_IFCHR :
613 S_ISBLK(st->st_mode) ? S_IFBLK :
614 0U);
615 if (sdata == NULL)
616 sdata = "???";
617 #endif /* HAVE_DEVNAME */
618 if (hilo == HIGH_PIECE) {
619 data = major(data);
620 hilo = 0;
621 }
622 else if (hilo == LOW_PIECE) {
623 data = minor((unsigned)data);
624 hilo = 0;
625 }
626 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
627 #if HAVE_DEVNAME
628 FMTF_STRING;
629 #else /* HAVE_DEVNAME */
630 0;
631 #endif /* HAVE_DEVNAME */
632 if (ofmt == 0)
633 ofmt = FMTF_UNSIGNED;
634 break;
635 case SHOW_st_ino:
636 small = (sizeof(st->st_ino) == 4);
637 data = st->st_ino;
638 sdata = NULL;
639 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
640 if (ofmt == 0)
641 ofmt = FMTF_UNSIGNED;
642 break;
643 case SHOW_st_mode:
644 small = (sizeof(st->st_mode) == 4);
645 data = st->st_mode;
646 strmode(st->st_mode, smode);
647 stmp = smode;
648 l = strlen(stmp);
649 if (stmp[l - 1] == ' ')
650 stmp[--l] = '\0';
651 if (hilo == HIGH_PIECE) {
652 data >>= 12;
653 stmp += 1;
654 stmp[3] = '\0';
655 hilo = 0;
656 }
657 else if (hilo == MIDDLE_PIECE) {
658 data = (data >> 9) & 07;
659 stmp += 4;
660 stmp[3] = '\0';
661 hilo = 0;
662 }
663 else if (hilo == LOW_PIECE) {
664 data &= 0777;
665 stmp += 7;
666 stmp[3] = '\0';
667 hilo = 0;
668 }
669 sdata = stmp;
670 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
671 FMTF_STRING;
672 if (ofmt == 0)
673 ofmt = FMTF_OCTAL;
674 break;
675 case SHOW_st_nlink:
676 small = (sizeof(st->st_dev) == 4);
677 data = st->st_nlink;
678 sdata = NULL;
679 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
680 if (ofmt == 0)
681 ofmt = FMTF_UNSIGNED;
682 break;
683 case SHOW_st_uid:
684 small = (sizeof(st->st_uid) == 4);
685 data = st->st_uid;
686 if ((pw = getpwuid(st->st_uid)) != NULL)
687 sdata = pw->pw_name;
688 else {
689 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
690 sdata = sid;
691 }
692 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
693 FMTF_STRING;
694 if (ofmt == 0)
695 ofmt = FMTF_UNSIGNED;
696 break;
697 case SHOW_st_gid:
698 small = (sizeof(st->st_gid) == 4);
699 data = st->st_gid;
700 if ((gr = getgrgid(st->st_gid)) != NULL)
701 sdata = gr->gr_name;
702 else {
703 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
704 sdata = sid;
705 }
706 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
707 FMTF_STRING;
708 if (ofmt == 0)
709 ofmt = FMTF_UNSIGNED;
710 break;
711 case SHOW_st_atime:
712 gottime = 1;
713 secs = st->st_atime;
714 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
715 nsecs = st->st_atimensec;
716 #endif
717 /* FALLTHROUGH */
718 case SHOW_st_mtime:
719 if (!gottime) {
720 gottime = 1;
721 secs = st->st_mtime;
722 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
723 nsecs = st->st_mtimensec;
724 #endif
725 }
726 /* FALLTHROUGH */
727 case SHOW_st_ctime:
728 if (!gottime) {
729 gottime = 1;
730 secs = st->st_ctime;
731 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
732 nsecs = st->st_ctimensec;
733 #endif
734 }
735 /* FALLTHROUGH */
736 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
737 case SHOW_st_btime:
738 if (!gottime) {
739 gottime = 1;
740 secs = st->st_birthtime;
741 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
742 nsecs = st->st_birthtimensec;
743 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */
744 }
745 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
746 small = (sizeof(secs) == 4);
747 data = secs;
748 tm = localtime(&secs);
749 if (tm == NULL) {
750 secs = 0;
751 tm = localtime(&secs);
752 }
753 (void)strftime(path, sizeof(path), timefmt, tm);
754 sdata = path;
755 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
756 FMTF_FLOAT | FMTF_STRING;
757 if (ofmt == 0)
758 ofmt = FMTF_DECIMAL;
759 break;
760 case SHOW_st_size:
761 small = (sizeof(st->st_size) == 4);
762 data = st->st_size;
763 sdata = NULL;
764 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
765 if (ofmt == 0)
766 ofmt = FMTF_UNSIGNED;
767 switch (hilo) {
768 case HIGH_PIECE:
769 shift = 30; /* gigabytes */
770 hilo = 0;
771 break;
772 case MIDDLE_PIECE:
773 shift = 20; /* megabytes */
774 hilo = 0;
775 break;
776 case LOW_PIECE:
777 shift = 10; /* kilobytes */
778 hilo = 0;
779 break;
780 }
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 = NULL;
803 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
804 if (ofmt == 0)
805 ofmt = FMTF_UNSIGNED;
806 break;
807 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
808 #if HAVE_STRUCT_STAT_ST_GEN
809 case SHOW_st_gen:
810 small = (sizeof(st->st_gen) == 4);
811 data = st->st_gen;
812 sdata = NULL;
813 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
814 if (ofmt == 0)
815 ofmt = FMTF_UNSIGNED;
816 break;
817 #endif /* HAVE_STRUCT_STAT_ST_GEN */
818 case SHOW_realpath:
819 small = 0;
820 data = 0;
821 if (file == NULL) {
822 (void)strlcpy(path, "(stdin)", sizeof(path));
823 sdata = path;
824 } else {
825 snprintf(path, sizeof(path), " -> ");
826 if (realpath(file, path + 4) == NULL) {
827 if (!quiet)
828 warn("realpath `%s'", file);
829 linkfail = 1;
830 l = 0;
831 path[0] = '\0';
832 }
833 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
834 prefixlen = (ofmt == FMTF_STRING ? 4 : 0);
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 if (!quiet)
849 warn("readlink `%s'", file);
850 linkfail = 1;
851 l = 0;
852 path[0] = '\0';
853 }
854 path[l + 4] = '\0';
855 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
856 prefixlen = (ofmt == FMTF_STRING ? 4 : 0);
857 }
858 else {
859 linkfail = 1;
860 sdata = "";
861 }
862 formats = FMTF_STRING;
863 if (ofmt == 0)
864 ofmt = FMTF_STRING;
865 break;
866 case SHOW_filetype:
867 small = 0;
868 data = 0;
869 sdata = "";
870 if (hilo == 0 || hilo == LOW_PIECE) {
871 switch (st->st_mode & S_IFMT) {
872 case S_IFIFO: sdata = "|"; break;
873 case S_IFDIR: sdata = "/"; break;
874 case S_IFREG:
875 if (st->st_mode &
876 (S_IXUSR | S_IXGRP | S_IXOTH))
877 sdata = "*";
878 break;
879 case S_IFLNK: sdata = "@"; break;
880 #ifdef S_IFSOCK
881 case S_IFSOCK: sdata = "="; break;
882 #endif
883 #ifdef S_IFWHT
884 case S_IFWHT: sdata = "%"; break;
885 #endif /* S_IFWHT */
886 #ifdef S_IFDOOR
887 case S_IFDOOR: sdata = ">"; break;
888 #endif /* S_IFDOOR */
889 }
890 hilo = 0;
891 }
892 else if (hilo == HIGH_PIECE) {
893 switch (st->st_mode & S_IFMT) {
894 case S_IFIFO: sdata = "Fifo File"; break;
895 case S_IFCHR: sdata = "Character Device"; break;
896 case S_IFDIR: sdata = "Directory"; break;
897 case S_IFBLK: sdata = "Block Device"; break;
898 case S_IFREG: sdata = "Regular File"; break;
899 case S_IFLNK: sdata = "Symbolic Link"; break;
900 #ifdef S_IFSOCK
901 case S_IFSOCK: sdata = "Socket"; break;
902 #endif
903 #ifdef S_IFWHT
904 case S_IFWHT: sdata = "Whiteout File"; break;
905 #endif /* S_IFWHT */
906 #ifdef S_IFDOOR
907 case S_IFDOOR: sdata = "Door"; break;
908 #endif /* S_IFDOOR */
909 default: sdata = "???"; break;
910 }
911 hilo = 0;
912 }
913 formats = FMTF_STRING;
914 if (ofmt == 0)
915 ofmt = FMTF_STRING;
916 break;
917 case SHOW_filename:
918 small = 0;
919 data = 0;
920 if (file == NULL) {
921 (void)strlcpy(path, "(stdin)", sizeof(path));
922 if (hilo == HIGH_PIECE || hilo == LOW_PIECE)
923 hilo = 0;
924 }
925 else if (hilo == 0)
926 (void)strlcpy(path, file, sizeof(path));
927 else {
928 char *s;
929 (void)strlcpy(path, file, sizeof(path));
930 s = strrchr(path, '/');
931 if (s != NULL) {
932 /* trim off trailing /'s */
933 while (s != path &&
934 s[0] == '/' && s[1] == '\0')
935 *s-- = '\0';
936 s = strrchr(path, '/');
937 }
938 if (hilo == HIGH_PIECE) {
939 if (s == NULL)
940 (void)strlcpy(path, ".", sizeof(path));
941 else {
942 while (s != path && s[0] == '/')
943 *s-- = '\0';
944 }
945 hilo = 0;
946 }
947 else if (hilo == LOW_PIECE) {
948 if (s != NULL && s[1] != '\0')
949 (void)strlcpy(path, s + 1,
950 sizeof(path));
951 hilo = 0;
952 }
953 }
954 sdata = path;
955 formats = FMTF_STRING;
956 if (ofmt == 0)
957 ofmt = FMTF_STRING;
958 break;
959 case SHOW_sizerdev:
960 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
961 char majdev[20], mindev[20];
962 int l1, l2;
963
964 l1 = format1(st,
965 file,
966 fmt, flen,
967 majdev, sizeof(majdev),
968 flags, size, prec,
969 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet);
970 l2 = format1(st,
971 file,
972 fmt, flen,
973 mindev, sizeof(mindev),
974 flags, size, prec,
975 ofmt, LOW_PIECE, SHOW_st_rdev, quiet);
976 return (snprintf(buf, blen, "%.*s,%.*s",
977 l1, majdev, l2, mindev));
978 }
979 else {
980 return (format1(st,
981 file,
982 fmt, flen,
983 buf, blen,
984 flags, size, prec,
985 ofmt, 0, SHOW_st_size, quiet));
986 }
987 /*NOTREACHED*/
988 default:
989 errx(1, "%.*s: bad format", (int)flen, fmt);
990 }
991
992 /*
993 * If a subdatum was specified but not supported, or an output
994 * format was selected that is not supported, that's an error.
995 */
996 if (hilo != 0 || (ofmt & formats) == 0)
997 errx(1, "%.*s: bad format", (int)flen, fmt);
998
999 /*
1000 * FLAG_POUND with FMTF_STRING means use vis(3) encoding.
1001 * First prefixlen chars are not encoded.
1002 */
1003 if ((flags & FLAG_POUND) != 0 && ofmt == FMTF_STRING) {
1004 flags &= !FLAG_POUND;
1005 strncpy(visbuf, sdata, prefixlen);
1006 strnvis(visbuf + prefixlen, sizeof(visbuf) - prefixlen,
1007 sdata + prefixlen, VIS_WHITE | VIS_OCTAL | VIS_CSTYLE);
1008 sdata = visbuf;
1009 }
1010
1011 /*
1012 * Assemble the format string for passing to printf(3).
1013 */
1014 lfmt[0] = '\0';
1015 (void)strcat(lfmt, "%");
1016 if (flags & FLAG_POUND)
1017 (void)strcat(lfmt, "#");
1018 if (flags & FLAG_SPACE)
1019 (void)strcat(lfmt, " ");
1020 if (flags & FLAG_PLUS)
1021 (void)strcat(lfmt, "+");
1022 if (flags & FLAG_MINUS)
1023 (void)strcat(lfmt, "-");
1024 if (flags & FLAG_ZERO)
1025 (void)strcat(lfmt, "0");
1026
1027 /*
1028 * Only the timespecs support the FLOAT output format, and that
1029 * requires work that differs from the other formats.
1030 */
1031 if (ofmt == FMTF_FLOAT) {
1032 /*
1033 * Nothing after the decimal point, so just print seconds.
1034 */
1035 if (prec == 0) {
1036 if (size != -1) {
1037 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1038 (void)strcat(lfmt, tmp);
1039 }
1040 (void)strcat(lfmt, "lld");
1041 return (snprintf(buf, blen, lfmt,
1042 (long long)secs));
1043 }
1044
1045 /*
1046 * Unspecified precision gets all the precision we have:
1047 * 9 digits.
1048 */
1049 if (prec == -1)
1050 prec = 9;
1051
1052 /*
1053 * Adjust the size for the decimal point and the digits
1054 * that will follow.
1055 */
1056 size -= prec + 1;
1057
1058 /*
1059 * Any leftover size that's legitimate will be used.
1060 */
1061 if (size > 0) {
1062 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1063 (void)strcat(lfmt, tmp);
1064 }
1065 /* Seconds: time_t cast to long long. */
1066 (void)strcat(lfmt, "lld");
1067
1068 /*
1069 * The stuff after the decimal point always needs zero
1070 * filling.
1071 */
1072 (void)strcat(lfmt, ".%0");
1073
1074 /*
1075 * We can "print" at most nine digits of precision. The
1076 * rest we will pad on at the end.
1077 *
1078 * Nanoseconds: long.
1079 */
1080 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec);
1081 (void)strcat(lfmt, tmp);
1082
1083 /*
1084 * For precision of less that nine digits, trim off the
1085 * less significant figures.
1086 */
1087 for (; prec < 9; prec++)
1088 nsecs /= 10;
1089
1090 /*
1091 * Use the format, and then tack on any zeroes that
1092 * might be required to make up the requested precision.
1093 */
1094 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs);
1095 for (; prec > 9 && l < (int)blen; prec--, l++)
1096 (void)strcat(buf, "0");
1097 return (l);
1098 }
1099
1100 /*
1101 * Add on size and precision, if specified, to the format.
1102 */
1103 if (size != -1) {
1104 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1105 (void)strcat(lfmt, tmp);
1106 }
1107 if (prec != -1) {
1108 (void)snprintf(tmp, sizeof(tmp), ".%d", prec);
1109 (void)strcat(lfmt, tmp);
1110 }
1111
1112 /*
1113 * String output uses the temporary sdata.
1114 */
1115 if (ofmt == FMTF_STRING) {
1116 if (sdata == NULL)
1117 errx(1, "%.*s: bad format", (int)flen, fmt);
1118 (void)strcat(lfmt, "s");
1119 return (snprintf(buf, blen, lfmt, sdata));
1120 }
1121
1122 /*
1123 * Ensure that sign extension does not cause bad looking output
1124 * for some forms.
1125 */
1126 if (small && ofmt != FMTF_DECIMAL)
1127 data = (u_int32_t)data;
1128
1129 /*
1130 * The four "numeric" output forms.
1131 */
1132 (void)strcat(lfmt, "ll");
1133 switch (ofmt) {
1134 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break;
1135 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break;
1136 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break;
1137 case FMTF_HEX: (void)strcat(lfmt, "x"); break;
1138 }
1139
1140 /*
1141 * shift and round to nearest for kilobytes, megabytes,
1142 * gigabytes.
1143 */
1144 if (shift > 0) {
1145 data >>= (shift - 1);
1146 data++;
1147 data >>= 1;
1148 }
1149
1150 return (snprintf(buf, blen, lfmt, data));
1151 }
1152