1 /* $NetBSD: stat.c,v 1.48 2022/06/22 18:20:30 kre 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 1.48 2022/06/22 18:20:30 kre 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 #define LINUX_B "%n Birth: %SB"
83 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
84 #define DEF_B
85 #define RAW_B
86 #define SHELL_B
87 #define LINUX_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=%Sa st_mtime=%Sm st_ctime=%Sc " SHELL_B \
107 "st_blksize=%k st_blocks=%b" SHELL_F
108 #define LINUX_FORMAT \
109 " File: \"%N\"%n" \
110 " Size: %-11z Blocks: %-11b IO Block: %-11k %HT%n" \
111 "Device: %Hd,%Ld Inode: %i Links: %l%n" \
112 " Mode: (%Mp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \
113 "Access: %Sa%n" \
114 "Modify: %Sm%n" \
115 "Change: %Sc" \
116 LINUX_B
117
118 #define TIME_FORMAT "%b %e %T %Y"
119
120 #define FLAG_POUND 0x01
121 #define FLAG_SPACE 0x02
122 #define FLAG_PLUS 0x04
123 #define FLAG_ZERO 0x08
124 #define FLAG_MINUS 0x10
125
126 /*
127 * These format characters must all be unique, except the magic one.
128 */
129 #define FMT_MAGIC '%'
130 #define FMT_DOT '.'
131
132 #define SIMPLE_NEWLINE 'n'
133 #define SIMPLE_TAB 't'
134 #define SIMPLE_PERCENT '%'
135 #define SIMPLE_NUMBER '@'
136
137 #define FMT_POUND '#'
138 #define FMT_SPACE ' '
139 #define FMT_PLUS '+'
140 #define FMT_ZERO '0'
141 #define FMT_MINUS '-'
142
143 #define FMT_DECIMAL 'D'
144 #define FMT_OCTAL 'O'
145 #define FMT_UNSIGNED 'U'
146 #define FMT_HEX 'X'
147 #define FMT_FLOAT 'F'
148 #define FMT_STRING 'S'
149
150 #define FMTF_DECIMAL 0x01
151 #define FMTF_OCTAL 0x02
152 #define FMTF_UNSIGNED 0x04
153 #define FMTF_HEX 0x08
154 #define FMTF_FLOAT 0x10
155 #define FMTF_STRING 0x20
156
157 #define HIGH_PIECE 'H'
158 #define MIDDLE_PIECE 'M'
159 #define LOW_PIECE 'L'
160
161 #define SHOW_realpath 'R'
162 #define SHOW_st_dev 'd'
163 #define SHOW_st_ino 'i'
164 #define SHOW_st_mode 'p'
165 #define SHOW_st_nlink 'l'
166 #define SHOW_st_uid 'u'
167 #define SHOW_st_gid 'g'
168 #define SHOW_st_rdev 'r'
169 #define SHOW_st_atime 'a'
170 #define SHOW_st_mtime 'm'
171 #define SHOW_st_ctime 'c'
172 #define SHOW_st_btime 'B'
173 #define SHOW_st_size 'z'
174 #define SHOW_st_blocks 'b'
175 #define SHOW_st_blksize 'k'
176 #define SHOW_st_flags 'f'
177 #define SHOW_st_gen 'v'
178 #define SHOW_symlink 'Y'
179 #define SHOW_filetype 'T'
180 #define SHOW_filename 'N'
181 #define SHOW_sizerdev 'Z'
182
183 static void usage(const char *) __dead;
184 static void output(const struct stat *, const char *,
185 const char *, int, int, int);
186 static int format1(const struct stat *, /* stat info */
187 const char *, /* the file name */
188 const char *, int, /* the format string itself */
189 char *, size_t, /* a place to put the output */
190 int, int, int, int, /* the parsed format */
191 int, int, int);
192
193 static const char *timefmt;
194 static int linkfail;
195
196 #define addchar(s, c, nl) \
197 do { \
198 (void)fputc((c), (s)); \
199 (*nl) = ((c) == '\n'); \
200 } while (0/*CONSTCOND*/)
201
202 int
main(int argc,char * argv[])203 main(int argc, char *argv[])
204 {
205 struct stat st;
206 int ch, rc, errs, am_readlink;
207 int lsF, fmtchar, usestat, fn, nonl, quiet;
208 const char *statfmt, *options, *synopsis;
209
210 am_readlink = 0;
211 lsF = 0;
212 fmtchar = '\0';
213 usestat = 0;
214 nonl = 0;
215 quiet = 0;
216 linkfail = 0;
217 statfmt = NULL;
218 timefmt = NULL;
219
220 setprogname(argv[0]);
221
222 if (strcmp(getprogname(), "readlink") == 0) {
223 am_readlink = 1;
224 options = "fnqsv";
225 synopsis = "[-fnqsv] [file ...]";
226 statfmt = "%Y";
227 fmtchar = 'f';
228 quiet = 1;
229 } else {
230 options = "f:FlLnqrst:x";
231 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]";
232 }
233
234 while ((ch = getopt(argc, argv, options)) != -1)
235 switch (ch) {
236 case 'F':
237 lsF = 1;
238 break;
239 case 'L':
240 usestat = 1;
241 break;
242 case 'n':
243 nonl = 1;
244 break;
245 case 'q':
246 quiet = 1;
247 break;
248 case 'f':
249 if (am_readlink) {
250 statfmt = "%R";
251 break;
252 }
253 statfmt = optarg;
254 /* FALLTHROUGH */
255 case 'l':
256 case 'r':
257 case 's':
258 if (am_readlink) {
259 quiet = 1;
260 break;
261 }
262 /*FALLTHROUGH*/
263 case 'x':
264 if (fmtchar != 0)
265 errx(1, "can't use format '%c' with '%c'",
266 fmtchar, ch);
267 fmtchar = ch;
268 break;
269 case 't':
270 timefmt = optarg;
271 break;
272 case 'v':
273 quiet = 0;
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 if (timefmt == NULL)
308 timefmt = "%s";
309 break;
310 case 'x':
311 statfmt = LINUX_FORMAT;
312 if (timefmt == NULL)
313 timefmt = "%Y-%m-%d %H:%M:%S.%f %z";
314 break;
315 default:
316 usage(synopsis);
317 /*NOTREACHED*/
318 }
319
320 if (timefmt == NULL)
321 timefmt = TIME_FORMAT;
322
323 errs = 0;
324 do {
325 if (argc == 0) {
326 fn = 0;
327 rc = fstat(STDIN_FILENO, &st);
328 } else if (usestat) {
329 /*
330 * Try stat() and if it fails, fall back to
331 * lstat() just in case we're examining a
332 * broken symlink.
333 */
334 if ((rc = stat(argv[0], &st)) == -1 &&
335 errno == ENOENT &&
336 (rc = lstat(argv[0], &st)) == -1)
337 errno = ENOENT;
338 } else
339 rc = lstat(argv[0], &st);
340
341 if (rc == -1) {
342 errs = 1;
343 linkfail = 1;
344 if (!quiet)
345 warn("%s: %s",
346 argc == 0 ? "(stdin)" : argv[0],
347 usestat ? "stat" : "lstat");
348 } else
349 output(&st, argv[0], statfmt, fn, nonl, quiet);
350
351 argv++;
352 argc--;
353 fn++;
354 } while (argc > 0);
355
356 return (am_readlink ? linkfail : errs);
357 }
358
359 static void
usage(const char * synopsis)360 usage(const char *synopsis)
361 {
362
363 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);
364 exit(1);
365 }
366
367 /*
368 * Parses a format string.
369 */
370 static void
output(const struct stat * st,const char * file,const char * statfmt,int fn,int nonl,int quiet)371 output(const struct stat *st, const char *file,
372 const char *statfmt, int fn, int nonl, int quiet)
373 {
374 int flags, size, prec, ofmt, hilo, what;
375 /*
376 * buf size is enough for an item of length PATH_MAX,
377 * multiplied by 4 for vis encoding, plus 4 for symlink
378 * " -> " prefix, plus 1 for \0 terminator.
379 */
380 char buf[PATH_MAX * 4 + 4 + 1];
381 const char *subfmt;
382 int nl, t, i;
383
384 nl = 1;
385 while (*statfmt != '\0') {
386
387 /*
388 * Non-format characters go straight out.
389 */
390 if (*statfmt != FMT_MAGIC) {
391 addchar(stdout, *statfmt, &nl);
392 statfmt++;
393 continue;
394 }
395
396 /*
397 * The current format "substring" starts here,
398 * and then we skip the magic.
399 */
400 subfmt = statfmt;
401 statfmt++;
402
403 /*
404 * Some simple one-character "formats".
405 */
406 switch (*statfmt) {
407 case SIMPLE_NEWLINE:
408 addchar(stdout, '\n', &nl);
409 statfmt++;
410 continue;
411 case SIMPLE_TAB:
412 addchar(stdout, '\t', &nl);
413 statfmt++;
414 continue;
415 case SIMPLE_PERCENT:
416 addchar(stdout, '%', &nl);
417 statfmt++;
418 continue;
419 case SIMPLE_NUMBER: {
420 char num[12], *p;
421
422 snprintf(num, sizeof(num), "%d", fn);
423 for (p = &num[0]; *p; p++)
424 addchar(stdout, *p, &nl);
425 statfmt++;
426 continue;
427 }
428 }
429
430 /*
431 * This must be an actual format string. Format strings are
432 * similar to printf(3) formats up to a point, and are of
433 * the form:
434 *
435 * % required start of format
436 * [-# +0] opt. format characters
437 * size opt. field width
438 * . opt. decimal separator, followed by
439 * prec opt. precision
440 * fmt opt. output specifier (string, numeric, etc.)
441 * sub opt. sub field specifier (high, middle, low)
442 * datum required field specifier (size, mode, etc)
443 *
444 * Only the % and the datum selector are required. All data
445 * have reasonable default output forms. The "sub" specifier
446 * only applies to certain data (mode, dev, rdev, filetype).
447 * The symlink output defaults to STRING, yet will only emit
448 * the leading " -> " if STRING is explicitly specified. The
449 * sizerdev datum will generate rdev output for character or
450 * block devices, and size output for all others.
451 * For STRING output, the # format requests vis encoding.
452 */
453 flags = 0;
454 do {
455 if (*statfmt == FMT_POUND)
456 flags |= FLAG_POUND;
457 else if (*statfmt == FMT_SPACE)
458 flags |= FLAG_SPACE;
459 else if (*statfmt == FMT_PLUS)
460 flags |= FLAG_PLUS;
461 else if (*statfmt == FMT_ZERO)
462 flags |= FLAG_ZERO;
463 else if (*statfmt == FMT_MINUS)
464 flags |= FLAG_MINUS;
465 else
466 break;
467 statfmt++;
468 } while (1/*CONSTCOND*/);
469
470 size = -1;
471 if (isdigit((unsigned char)*statfmt)) {
472 size = 0;
473 while (isdigit((unsigned char)*statfmt)) {
474 size = (size * 10) + (*statfmt - '0');
475 statfmt++;
476 if (size < 0)
477 goto badfmt;
478 }
479 }
480
481 prec = -1;
482 if (*statfmt == FMT_DOT) {
483 statfmt++;
484
485 prec = 0;
486 while (isdigit((unsigned char)*statfmt)) {
487 prec = (prec * 10) + (*statfmt - '0');
488 statfmt++;
489 if (prec < 0)
490 goto badfmt;
491 }
492 }
493
494 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break
495 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break
496 switch (*statfmt) {
497 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL);
498 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL);
499 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED);
500 fmtcasef(ofmt, FMT_HEX, FMTF_HEX);
501 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT);
502 fmtcasef(ofmt, FMT_STRING, FMTF_STRING);
503 default:
504 ofmt = 0;
505 break;
506 }
507
508 switch (*statfmt) {
509 fmtcase(hilo, HIGH_PIECE);
510 fmtcase(hilo, MIDDLE_PIECE);
511 fmtcase(hilo, LOW_PIECE);
512 default:
513 hilo = 0;
514 break;
515 }
516
517 switch (*statfmt) {
518 fmtcase(what, SHOW_realpath);
519 fmtcase(what, SHOW_st_dev);
520 fmtcase(what, SHOW_st_ino);
521 fmtcase(what, SHOW_st_mode);
522 fmtcase(what, SHOW_st_nlink);
523 fmtcase(what, SHOW_st_uid);
524 fmtcase(what, SHOW_st_gid);
525 fmtcase(what, SHOW_st_rdev);
526 fmtcase(what, SHOW_st_atime);
527 fmtcase(what, SHOW_st_mtime);
528 fmtcase(what, SHOW_st_ctime);
529 fmtcase(what, SHOW_st_btime);
530 fmtcase(what, SHOW_st_size);
531 fmtcase(what, SHOW_st_blocks);
532 fmtcase(what, SHOW_st_blksize);
533 fmtcase(what, SHOW_st_flags);
534 fmtcase(what, SHOW_st_gen);
535 fmtcase(what, SHOW_symlink);
536 fmtcase(what, SHOW_filetype);
537 fmtcase(what, SHOW_filename);
538 fmtcase(what, SHOW_sizerdev);
539 default:
540 goto badfmt;
541 }
542 #undef fmtcasef
543 #undef fmtcase
544
545 t = format1(st,
546 file,
547 subfmt, statfmt - subfmt,
548 buf, sizeof(buf),
549 flags, size, prec, ofmt, hilo, what, quiet);
550
551 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++)
552 addchar(stdout, buf[i], &nl);
553
554 continue;
555
556 badfmt:
557 errx(1, "%.*s: bad format",
558 (int)(statfmt - subfmt + 1), subfmt);
559 }
560
561 if (!nl && !nonl)
562 (void)fputc('\n', stdout);
563 (void)fflush(stdout);
564 }
565
566 static const char *
fmttime(char * buf,size_t len,const char * fmt,time_t secs,long nsecs)567 fmttime(char *buf, size_t len, const char *fmt, time_t secs, long nsecs)
568 {
569 struct tm tm;
570 const char *fpb, *fp1, *fp2; /* pointers into fmt */
571 char *fmt2 = NULL; /* replacement fmt (if not NULL) */
572 /* XXX init of next twp for stupid gcc only */
573 char *f2p = NULL; /* ptr into fmt2 - last added */
574 size_t flen = 0;
575 size_t o;
576 int sl;
577
578 if (localtime_r(&secs, &tm) == NULL) {
579 secs = 0;
580 (void)localtime_r(&secs, &tm);
581 }
582 for (fp1 = fpb = fmt; (fp2 = strchr(fp1, '%')) != NULL; ) {
583 if (fp2[1] != 'f') {
584 /* make sure we don't find the 2nd '%' in "%%" */
585 fp1 = fp2 + 1 + (fp2[1] != '\0');
586 continue;
587 }
588 if (fmt2 == NULL) {
589 /* allow for ~100 %f's in the format ... */
590 flen = strlen(fmt) + 1024;
591
592 if ((fmt2 = calloc(flen, 1)) == NULL) {
593 fp1 = fp2 + 2;
594 continue;
595 }
596 f2p = fmt2;
597
598 o = (size_t)(fp2 - fpb);
599 memcpy(f2p, fpb, o); /* must fit */
600 fmt = fmt2;
601 } else {
602 o = (size_t)(fp2 - fpb);
603 if (flen > o)
604 memcpy(f2p, fpb, o);
605 }
606 if (flen < o + 10) { /* 9 digits + \0 == 10 */
607 *f2p = '\0';
608 break;
609 }
610 f2p += o;
611 flen -= o;
612 sl = snprintf(f2p, flen, "%.9ld", nsecs);
613 if (sl == -1)
614 sl = 0;
615 f2p += sl;
616 *f2p = '\0';
617 flen -= sl;
618 fp1 = fp2 + 2;
619 fpb = fp1;
620 }
621 if (fmt2 != NULL) {
622 o = strlen(fpb);
623 if (flen > o) {
624 memcpy(f2p, fpb, o);
625 f2p[o] = '\0';
626 }
627 }
628
629 (void)strftime(buf, len, fmt, &tm);
630 free(fmt2);
631 return buf;
632 }
633
634 /*
635 * Arranges output according to a single parsed format substring.
636 */
637 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)638 format1(const struct stat *st,
639 const char *file,
640 const char *fmt, int flen,
641 char *buf, size_t blen,
642 int flags, int size, int prec, int ofmt,
643 int hilo, int what, int quiet)
644 {
645 uint64_t data;
646 char *stmp, lfmt[24], tmp[20];
647 const char *sdata;
648 char smode[12], sid[13], path[PATH_MAX + 4], visbuf[PATH_MAX * 4 + 4];
649 struct passwd *pw;
650 struct group *gr;
651 time_t secs;
652 long nsecs;
653 int l;
654 int formats; /* bitmap of allowed formats for this datum */
655 int small; /* true if datum is a small integer */
656 int gottime; /* true if secs and nsecs are valid */
657 int shift; /* powers of 2 to scale numbers before printing */
658 size_t prefixlen; /* length of constant prefix for string data */
659
660 formats = 0;
661 small = 0;
662 gottime = 0;
663 secs = 0;
664 nsecs = 0;
665 shift = 0;
666 prefixlen = 0;
667
668 /*
669 * First, pick out the data and tweak it based on hilo or
670 * specified output format (symlink output only).
671 */
672 switch (what) {
673 case SHOW_st_dev:
674 case SHOW_st_rdev:
675 small = (sizeof(st->st_dev) == 4);
676 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev;
677 #if HAVE_DEVNAME
678 sdata = (what == SHOW_st_dev) ?
679 devname(st->st_dev, S_IFBLK) :
680 devname(st->st_rdev,
681 S_ISCHR(st->st_mode) ? S_IFCHR :
682 S_ISBLK(st->st_mode) ? S_IFBLK :
683 0U);
684 if (sdata == NULL)
685 sdata = "???";
686 #endif /* HAVE_DEVNAME */
687 if (hilo == HIGH_PIECE) {
688 data = major(data);
689 hilo = 0;
690 }
691 else if (hilo == LOW_PIECE) {
692 data = minor((unsigned)data);
693 hilo = 0;
694 }
695 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
696 #if HAVE_DEVNAME
697 FMTF_STRING;
698 #else /* HAVE_DEVNAME */
699 0;
700 #endif /* HAVE_DEVNAME */
701 if (ofmt == 0) {
702 if (data == (uint64_t)-1)
703 ofmt = FMTF_DECIMAL;
704 else
705 ofmt = FMTF_UNSIGNED;
706 }
707 break;
708 case SHOW_st_ino:
709 small = (sizeof(st->st_ino) == 4);
710 data = st->st_ino;
711 sdata = NULL;
712 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
713 if (ofmt == 0)
714 ofmt = FMTF_UNSIGNED;
715 break;
716 case SHOW_st_mode:
717 small = (sizeof(st->st_mode) == 4);
718 data = st->st_mode;
719 strmode(st->st_mode, smode);
720 stmp = smode;
721 l = strlen(stmp);
722 if (stmp[l - 1] == ' ')
723 stmp[--l] = '\0';
724 if (hilo == HIGH_PIECE) {
725 data >>= 12;
726 stmp += 1;
727 stmp[3] = '\0';
728 hilo = 0;
729 }
730 else if (hilo == MIDDLE_PIECE) {
731 data = (data >> 9) & 07;
732 stmp += 4;
733 stmp[3] = '\0';
734 hilo = 0;
735 }
736 else if (hilo == LOW_PIECE) {
737 data &= 0777;
738 stmp += 7;
739 stmp[3] = '\0';
740 hilo = 0;
741 }
742 sdata = stmp;
743 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
744 FMTF_STRING;
745 if (ofmt == 0)
746 ofmt = FMTF_OCTAL;
747 break;
748 case SHOW_st_nlink:
749 small = (sizeof(st->st_dev) == 4);
750 data = st->st_nlink;
751 sdata = NULL;
752 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
753 if (ofmt == 0)
754 ofmt = FMTF_UNSIGNED;
755 break;
756 case SHOW_st_uid:
757 small = (sizeof(st->st_uid) == 4);
758 data = st->st_uid;
759 if ((pw = getpwuid(st->st_uid)) != NULL)
760 sdata = pw->pw_name;
761 else {
762 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
763 sdata = sid;
764 }
765 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
766 FMTF_STRING;
767 if (ofmt == 0)
768 ofmt = FMTF_UNSIGNED;
769 break;
770 case SHOW_st_gid:
771 small = (sizeof(st->st_gid) == 4);
772 data = st->st_gid;
773 if ((gr = getgrgid(st->st_gid)) != NULL)
774 sdata = gr->gr_name;
775 else {
776 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
777 sdata = sid;
778 }
779 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
780 FMTF_STRING;
781 if (ofmt == 0)
782 ofmt = FMTF_UNSIGNED;
783 break;
784 case SHOW_st_atime:
785 gottime = 1;
786 secs = st->st_atime;
787 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
788 nsecs = st->st_atimensec;
789 #endif
790 /* FALLTHROUGH */
791 case SHOW_st_mtime:
792 if (!gottime) {
793 gottime = 1;
794 secs = st->st_mtime;
795 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
796 nsecs = st->st_mtimensec;
797 #endif
798 }
799 /* FALLTHROUGH */
800 case SHOW_st_ctime:
801 if (!gottime) {
802 gottime = 1;
803 secs = st->st_ctime;
804 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
805 nsecs = st->st_ctimensec;
806 #endif
807 }
808 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
809 /* FALLTHROUGH */
810 case SHOW_st_btime:
811 if (!gottime) {
812 gottime = 1;
813 secs = st->st_birthtime;
814 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
815 nsecs = st->st_birthtimensec;
816 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */
817 }
818 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
819 small = (sizeof(secs) == 4);
820 data = secs;
821 sdata = fmttime(path, sizeof(path), timefmt, secs, nsecs);
822
823 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
824 FMTF_FLOAT | FMTF_STRING;
825 if (ofmt == 0)
826 ofmt = FMTF_DECIMAL;
827 break;
828 case SHOW_st_size:
829 small = (sizeof(st->st_size) == 4);
830 data = st->st_size;
831 sdata = NULL;
832 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
833 if (ofmt == 0)
834 ofmt = FMTF_UNSIGNED;
835 switch (hilo) {
836 case HIGH_PIECE:
837 shift = 30; /* gigabytes */
838 hilo = 0;
839 break;
840 case MIDDLE_PIECE:
841 shift = 20; /* megabytes */
842 hilo = 0;
843 break;
844 case LOW_PIECE:
845 shift = 10; /* kilobytes */
846 hilo = 0;
847 break;
848 }
849 break;
850 case SHOW_st_blocks:
851 small = (sizeof(st->st_blocks) == 4);
852 data = st->st_blocks;
853 sdata = NULL;
854 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
855 if (ofmt == 0)
856 ofmt = FMTF_UNSIGNED;
857 break;
858 case SHOW_st_blksize:
859 small = (sizeof(st->st_blksize) == 4);
860 data = st->st_blksize;
861 sdata = NULL;
862 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
863 if (ofmt == 0)
864 ofmt = FMTF_UNSIGNED;
865 break;
866 #if HAVE_STRUCT_STAT_ST_FLAGS
867 case SHOW_st_flags:
868 small = (sizeof(st->st_flags) == 4);
869 data = st->st_flags;
870 sdata = NULL;
871 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
872 if (ofmt == 0)
873 ofmt = FMTF_UNSIGNED;
874 break;
875 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
876 #if HAVE_STRUCT_STAT_ST_GEN
877 case SHOW_st_gen:
878 small = (sizeof(st->st_gen) == 4);
879 data = st->st_gen;
880 sdata = NULL;
881 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
882 if (ofmt == 0)
883 ofmt = FMTF_UNSIGNED;
884 break;
885 #endif /* HAVE_STRUCT_STAT_ST_GEN */
886 case SHOW_realpath:
887 small = 0;
888 data = 0;
889 if (file == NULL) {
890 (void)strlcpy(path, "(stdin)", sizeof(path));
891 sdata = path;
892 } else {
893 snprintf(path, sizeof(path), " -> ");
894 if (realpath(file, path + 4) == NULL) {
895 if (!quiet)
896 warn("realpath `%s'", file);
897 linkfail = 1;
898 l = 0;
899 path[0] = '\0';
900 }
901 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
902 prefixlen = (ofmt == FMTF_STRING ? 4 : 0);
903 }
904
905 formats = FMTF_STRING;
906 if (ofmt == 0)
907 ofmt = FMTF_STRING;
908 break;
909 case SHOW_symlink:
910 small = 0;
911 data = 0;
912 if (S_ISLNK(st->st_mode)) {
913 snprintf(path, sizeof(path), " -> ");
914 l = readlink(file, path + 4, sizeof(path) - 4 - 1);
915 if (l == -1) {
916 if (!quiet)
917 warn("readlink `%s'", file);
918 linkfail = 1;
919 l = 0;
920 path[0] = '\0';
921 }
922 path[l + 4] = '\0';
923 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
924 prefixlen = (ofmt == FMTF_STRING ? 4 : 0);
925 }
926 else {
927 linkfail = 1;
928 sdata = "";
929 }
930 formats = FMTF_STRING;
931 if (ofmt == 0)
932 ofmt = FMTF_STRING;
933 break;
934 case SHOW_filetype:
935 small = 0;
936 data = 0;
937 sdata = "";
938 if (hilo == 0 || hilo == LOW_PIECE) {
939 switch (st->st_mode & S_IFMT) {
940 case S_IFIFO: sdata = "|"; break;
941 case S_IFDIR: sdata = "/"; break;
942 case S_IFREG:
943 if (st->st_mode &
944 (S_IXUSR | S_IXGRP | S_IXOTH))
945 sdata = "*";
946 break;
947 case S_IFLNK: sdata = "@"; break;
948 #ifdef S_IFSOCK
949 case S_IFSOCK: sdata = "="; break;
950 #endif
951 #ifdef S_IFWHT
952 case S_IFWHT: sdata = "%"; break;
953 #endif /* S_IFWHT */
954 #ifdef S_IFDOOR
955 case S_IFDOOR: sdata = ">"; break;
956 #endif /* S_IFDOOR */
957 }
958 hilo = 0;
959 }
960 else if (hilo == HIGH_PIECE) {
961 switch (st->st_mode & S_IFMT) {
962 case S_IFIFO: sdata = "Fifo File"; break;
963 case S_IFCHR: sdata = "Character Device"; break;
964 case S_IFDIR: sdata = "Directory"; break;
965 case S_IFBLK: sdata = "Block Device"; break;
966 case S_IFREG: sdata = "Regular File"; break;
967 case S_IFLNK: sdata = "Symbolic Link"; break;
968 #ifdef S_IFSOCK
969 case S_IFSOCK: sdata = "Socket"; break;
970 #endif
971 #ifdef S_IFWHT
972 case S_IFWHT: sdata = "Whiteout File"; break;
973 #endif /* S_IFWHT */
974 #ifdef S_IFDOOR
975 case S_IFDOOR: sdata = "Door"; break;
976 #endif /* S_IFDOOR */
977 default: sdata = "???"; break;
978 }
979 hilo = 0;
980 }
981 formats = FMTF_STRING;
982 if (ofmt == 0)
983 ofmt = FMTF_STRING;
984 break;
985 case SHOW_filename:
986 small = 0;
987 data = 0;
988 if (file == NULL) {
989 (void)strlcpy(path, "(stdin)", sizeof(path));
990 if (hilo == HIGH_PIECE || hilo == LOW_PIECE)
991 hilo = 0;
992 }
993 else if (hilo == 0)
994 (void)strlcpy(path, file, sizeof(path));
995 else {
996 char *s;
997 (void)strlcpy(path, file, sizeof(path));
998 s = strrchr(path, '/');
999 if (s != NULL) {
1000 /* trim off trailing /'s */
1001 while (s != path &&
1002 s[0] == '/' && s[1] == '\0')
1003 *s-- = '\0';
1004 s = strrchr(path, '/');
1005 }
1006 if (hilo == HIGH_PIECE) {
1007 if (s == NULL)
1008 (void)strlcpy(path, ".", sizeof(path));
1009 else {
1010 while (s != path && s[0] == '/')
1011 *s-- = '\0';
1012 }
1013 hilo = 0;
1014 }
1015 else if (hilo == LOW_PIECE) {
1016 if (s != NULL && s[1] != '\0')
1017 (void)strlcpy(path, s + 1,
1018 sizeof(path));
1019 hilo = 0;
1020 }
1021 }
1022 sdata = path;
1023 formats = FMTF_STRING;
1024 if (ofmt == 0)
1025 ofmt = FMTF_STRING;
1026 break;
1027 case SHOW_sizerdev:
1028 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
1029 char majdev[20], mindev[20];
1030 int l1, l2;
1031
1032 if (size == 0) /* avoid -1/2 */
1033 size++; /* 1/2 == 0/2 so this is safe */
1034 l1 = format1(st,
1035 file,
1036 fmt, flen,
1037 majdev, sizeof(majdev),
1038 flags, (size - 1) / 2, prec,
1039 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet);
1040 l2 = format1(st,
1041 file,
1042 fmt, flen,
1043 mindev, sizeof(mindev),
1044 flags | FLAG_MINUS , size / 2, prec,
1045 ofmt, LOW_PIECE, SHOW_st_rdev, quiet);
1046 return (snprintf(buf, blen, "%.*s,%.*s",
1047 l1, majdev, l2, mindev));
1048 }
1049 else {
1050 return (format1(st,
1051 file,
1052 fmt, flen,
1053 buf, blen,
1054 flags, size, prec,
1055 ofmt, 0, SHOW_st_size, quiet));
1056 }
1057 /*NOTREACHED*/
1058 default:
1059 errx(1, "%.*s: bad format", (int)flen, fmt);
1060 }
1061
1062 /*
1063 * If a subdatum was specified but not supported, or an output
1064 * format was selected that is not supported, that's an error.
1065 */
1066 if (hilo != 0 || (ofmt & formats) == 0)
1067 errx(1, "%.*s: bad format", (int)flen, fmt);
1068
1069 /*
1070 * FLAG_POUND with FMTF_STRING means use vis(3) encoding.
1071 * First prefixlen chars are not encoded.
1072 */
1073 if ((flags & FLAG_POUND) != 0 && ofmt == FMTF_STRING) {
1074 flags &= !FLAG_POUND;
1075 strncpy(visbuf, sdata, prefixlen);
1076 /* Avoid GCC warnings. */
1077 visbuf[prefixlen] = 0;
1078 strnvis(visbuf + prefixlen, sizeof(visbuf) - prefixlen,
1079 sdata + prefixlen, VIS_WHITE | VIS_OCTAL | VIS_CSTYLE);
1080 sdata = visbuf;
1081 }
1082
1083 /*
1084 * Assemble the format string for passing to printf(3).
1085 */
1086 lfmt[0] = '\0';
1087 (void)strcat(lfmt, "%");
1088 if (flags & FLAG_POUND)
1089 (void)strcat(lfmt, "#");
1090 if (flags & FLAG_SPACE)
1091 (void)strcat(lfmt, " ");
1092 if (flags & FLAG_PLUS)
1093 (void)strcat(lfmt, "+");
1094 if (flags & FLAG_MINUS)
1095 (void)strcat(lfmt, "-");
1096 if (flags & FLAG_ZERO)
1097 (void)strcat(lfmt, "0");
1098
1099 /*
1100 * Only the timespecs support the FLOAT output format, and that
1101 * requires work that differs from the other formats.
1102 */
1103 if (ofmt == FMTF_FLOAT) {
1104 /*
1105 * Nothing after the decimal point, so just print seconds.
1106 */
1107 if (prec == 0) {
1108 if (size != -1) {
1109 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1110 (void)strcat(lfmt, tmp);
1111 }
1112 (void)strcat(lfmt, "lld");
1113 return (snprintf(buf, blen, lfmt,
1114 (long long)secs));
1115 }
1116
1117 /*
1118 * Unspecified precision gets all the precision we have:
1119 * 9 digits.
1120 */
1121 if (prec == -1)
1122 prec = 9;
1123
1124 /*
1125 * Adjust the size for the decimal point and the digits
1126 * that will follow.
1127 */
1128 size -= prec + 1;
1129
1130 /*
1131 * Any leftover size that's legitimate will be used.
1132 */
1133 if (size > 0) {
1134 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1135 (void)strcat(lfmt, tmp);
1136 }
1137 /* Seconds: time_t cast to long long. */
1138 (void)strcat(lfmt, "lld");
1139
1140 /*
1141 * The stuff after the decimal point always needs zero
1142 * filling.
1143 */
1144 (void)strcat(lfmt, ".%0");
1145
1146 /*
1147 * We can "print" at most nine digits of precision. The
1148 * rest we will pad on at the end.
1149 *
1150 * Nanoseconds: long.
1151 */
1152 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec);
1153 (void)strcat(lfmt, tmp);
1154
1155 /*
1156 * For precision of less that nine digits, trim off the
1157 * less significant figures.
1158 */
1159 for (; prec < 9; prec++)
1160 nsecs /= 10;
1161
1162 /*
1163 * Use the format, and then tack on any zeroes that
1164 * might be required to make up the requested precision.
1165 */
1166 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs);
1167 for (; prec > 9 && l < (int)blen; prec--, l++)
1168 (void)strcat(buf, "0");
1169 return (l);
1170 }
1171
1172 /*
1173 * Add on size and precision, if specified, to the format.
1174 */
1175 if (size != -1) {
1176 (void)snprintf(tmp, sizeof(tmp), "%d", size);
1177 (void)strcat(lfmt, tmp);
1178 }
1179 if (prec != -1) {
1180 (void)snprintf(tmp, sizeof(tmp), ".%d", prec);
1181 (void)strcat(lfmt, tmp);
1182 }
1183
1184 /*
1185 * String output uses the temporary sdata.
1186 */
1187 if (ofmt == FMTF_STRING) {
1188 if (sdata == NULL)
1189 errx(1, "%.*s: bad format", (int)flen, fmt);
1190 (void)strcat(lfmt, "s");
1191 return (snprintf(buf, blen, lfmt, sdata));
1192 }
1193
1194 /*
1195 * Ensure that sign extension does not cause bad looking output
1196 * for some forms.
1197 */
1198 if (small && ofmt != FMTF_DECIMAL)
1199 data = (uint32_t)data;
1200
1201 /*
1202 * The four "numeric" output forms.
1203 */
1204 (void)strcat(lfmt, "ll");
1205 switch (ofmt) {
1206 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break;
1207 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break;
1208 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break;
1209 case FMTF_HEX: (void)strcat(lfmt, "x"); break;
1210 }
1211
1212 /*
1213 * shift and round to nearest for kilobytes, megabytes,
1214 * gigabytes.
1215 */
1216 if (shift > 0) {
1217 data >>= (shift - 1);
1218 data++;
1219 data >>= 1;
1220 }
1221
1222 return (snprintf(buf, blen, lfmt, data));
1223 }
1224