Bug Summary

File:src/usr.bin/stat/stat.c
Warning:line 502, column 2
Value stored to 'small' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name stat.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.bin/stat/obj -resource-dir /usr/local/llvm16/lib/clang/16 -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.bin/stat/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/scan/2024-01-11-140451-98009-1 -x c /usr/src/usr.bin/stat/stat.c
1/* $OpenBSD: stat.c,v 1.25 2023/08/06 19:36:13 guenther Exp $ */
2/* $NetBSD: stat.c,v 1.19 2004/06/20 22:20:16 jmc Exp $ */
3
4/*
5 * Copyright (c) 2002 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Andrew Brown.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/types.h>
34#include <sys/stat.h>
35
36#include <ctype.h>
37#include <err.h>
38#include <errno(*__errno()).h>
39#include <grp.h>
40#include <limits.h>
41#include <pwd.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45#include <time.h>
46#include <unistd.h>
47
48#define DEF_FORMAT"%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " "%k %b %#Xf %N" \
49 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " \
50 "%k %b %#Xf %N"
51#define RAW_FORMAT"%d %i %#p %l %u %g %r %z %a %m %c " "%k %b %f %N" "%d %i %#p %l %u %g %r %z %a %m %c " \
52 "%k %b %f %N"
53#define LS_FORMAT"%Sp %l %Su %Sg %Z %Sm %N%SY" "%Sp %l %Su %Sg %Z %Sm %N%SY"
54#define LSF_FORMAT"%Sp %l %Su %Sg %Z %Sm %N%T%SY" "%Sp %l %Su %Sg %Z %Sm %N%T%SY"
55#define SHELL_FORMAT"st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " "st_uid=%u st_gid=%g st_rdev=%r st_size=%z "
"st_atime=%a st_mtime=%m st_ctime=%c " "st_blksize=%k st_blocks=%b st_flags=%f" \
56 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \
57 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \
58 "st_atime=%a st_mtime=%m st_ctime=%c " \
59 "st_blksize=%k st_blocks=%b st_flags=%f"
60#define LINUX_FORMAT" File: \"%N\"%n" " Size: %-11z FileType: %HT%n" " Mode: (%01Mp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n"
"Device: %Hd,%Ld Inode: %i Links: %l%n" "Access: %Sa%n"
"Modify: %Sm%n" "Change: %Sc" \
61 " File: \"%N\"%n" \
62 " Size: %-11z FileType: %HT%n" \
63 " Mode: (%01Mp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \
64 "Device: %Hd,%Ld Inode: %i Links: %l%n" \
65 "Access: %Sa%n" \
66 "Modify: %Sm%n" \
67 "Change: %Sc"
68
69#define TIME_FORMAT"%b %e %T %Y" "%b %e %T %Y"
70
71#define FLAG_POUND0x01 0x01
72#define FLAG_SPACE0x02 0x02
73#define FLAG_PLUS0x04 0x04
74#define FLAG_ZERO0x08 0x08
75#define FLAG_MINUS0x10 0x10
76
77/*
78 * These format characters must all be unique, except the magic one.
79 */
80#define FMT_MAGIC'%' '%'
81#define FMT_DOT'.' '.'
82
83#define SIMPLE_NEWLINE'n' 'n'
84#define SIMPLE_TAB't' 't'
85#define SIMPLE_PERCENT'%' '%'
86#define SIMPLE_NUMBER'@' '@'
87
88#define FMT_POUND'#' '#'
89#define FMT_SPACE' ' ' '
90#define FMT_PLUS'+' '+'
91#define FMT_ZERO'0' '0'
92#define FMT_MINUS'-' '-'
93
94#define FMT_DECIMAL'D' 'D'
95#define FMT_OCTAL'O' 'O'
96#define FMT_UNSIGNED'U' 'U'
97#define FMT_HEX'X' 'X'
98#define FMT_FLOAT'F' 'F'
99#define FMT_STRING'S' 'S'
100
101#define FMTF_DECIMAL0x01 0x01
102#define FMTF_OCTAL0x02 0x02
103#define FMTF_UNSIGNED0x04 0x04
104#define FMTF_HEX0x08 0x08
105#define FMTF_FLOAT0x10 0x10
106#define FMTF_STRING0x20 0x20
107
108#define HIGH_PIECE'H' 'H'
109#define MIDDLE_PIECE'M' 'M'
110#define LOW_PIECE'L' 'L'
111
112#define SHOW_st_dev'd' 'd'
113#define SHOW_st_ino'i' 'i'
114#define SHOW_st_mode'p' 'p'
115#define SHOW_st_nlink'l' 'l'
116#define SHOW_st_uid'u' 'u'
117#define SHOW_st_gid'g' 'g'
118#define SHOW_st_rdev'r' 'r'
119#define SHOW_st_atime'a' 'a'
120#define SHOW_st_mtime'm' 'm'
121#define SHOW_st_ctime'c' 'c'
122#define SHOW_st_btime'B' 'B'
123#define SHOW_st_size'z' 'z'
124#define SHOW_st_blocks'b' 'b'
125#define SHOW_st_blksize'k' 'k'
126#define SHOW_st_flags'f' 'f'
127#define SHOW_st_gen'v' 'v'
128#define SHOW_symlink'Y' 'Y'
129#define SHOW_filetype'T' 'T'
130#define SHOW_filename'N' 'N'
131#define SHOW_sizerdev'Z' 'Z'
132
133void usage(const char *);
134void output(const struct stat *, const char *,
135 const char *, int, int);
136int format1(const struct stat *, /* stat info */
137 const char *, /* the file name */
138 const char *, int, /* the format string itself */
139 char *, size_t, /* a place to put the output */
140 int, int, int, int, /* the parsed format */
141 int, int);
142
143char *timefmt;
144
145#define addchar(s, c, nl)do { (void)fputc((c), (s)); (*nl) = ((c) == '\n'); } while (0
) \
146 do { \
147 (void)fputc((c), (s)); \
148 (*nl) = ((c) == '\n'); \
149 } while (0/*CONSTCOND*/)
150
151extern char *__progname;
152
153int
154main(int argc, char *argv[])
155{
156 struct stat st;
157 int ch, rc, errs;
158 int lsF, fmtchar, usestat, fn, nonl, quiet;
159 char *statfmt, *options, *synopsis;
160
161 if (pledge("stdio rpath getpw", NULL((void *)0)) == -1)
162 err(1, "pledge");
163
164 lsF = 0;
165 fmtchar = '\0';
166 usestat = 0;
167 nonl = 0;
168 quiet = 0;
169 statfmt = NULL((void *)0);
170 timefmt = NULL((void *)0);
171
172 options = "f:FlLnqrst:x";
173 synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] "
174 "[-t timefmt] [file ...]";
175
176 while ((ch = getopt(argc, argv, options)) != -1)
177 switch (ch) {
178 case 'F':
179 lsF = 1;
180 break;
181 case 'L':
182 usestat = 1;
183 break;
184 case 'n':
185 nonl = 1;
186 break;
187 case 'q':
188 quiet = 1;
189 break;
190 case 'f':
191 statfmt = optarg;
192 /* FALLTHROUGH */
193 case 'l':
194 case 'r':
195 case 's':
196 case 'x':
197 if (fmtchar != 0)
198 errx(1, "can't use format '%c' with '%c'",
199 fmtchar, ch);
200 fmtchar = ch;
201 break;
202 case 't':
203 timefmt = optarg;
204 break;
205 default:
206 usage(synopsis);
207 }
208
209 argc -= optind;
210 argv += optind;
211 fn = 1;
212
213 if (fmtchar == '\0') {
214 if (lsF)
215 fmtchar = 'l';
216 else {
217 fmtchar = 'f';
218 statfmt = DEF_FORMAT"%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " "%k %b %#Xf %N";
219 }
220 }
221
222 if (lsF && fmtchar != 'l')
223 errx(1, "can't use format '%c' with -F", fmtchar);
224
225 switch (fmtchar) {
226 case 'f':
227 /* statfmt already set */
228 break;
229 case 'l':
230 statfmt = lsF ? LSF_FORMAT"%Sp %l %Su %Sg %Z %Sm %N%T%SY" : LS_FORMAT"%Sp %l %Su %Sg %Z %Sm %N%SY";
231 break;
232 case 'r':
233 statfmt = RAW_FORMAT"%d %i %#p %l %u %g %r %z %a %m %c " "%k %b %f %N";
234 break;
235 case 's':
236 statfmt = SHELL_FORMAT"st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " "st_uid=%u st_gid=%g st_rdev=%r st_size=%z "
"st_atime=%a st_mtime=%m st_ctime=%c " "st_blksize=%k st_blocks=%b st_flags=%f";
237 break;
238 case 'x':
239 statfmt = LINUX_FORMAT" File: \"%N\"%n" " Size: %-11z FileType: %HT%n" " Mode: (%01Mp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n"
"Device: %Hd,%Ld Inode: %i Links: %l%n" "Access: %Sa%n"
"Modify: %Sm%n" "Change: %Sc";
240 if (timefmt == NULL((void *)0))
241 timefmt = "%c";
242 break;
243 default:
244 usage(synopsis);
245 /*NOTREACHED*/
246 }
247
248 if (timefmt == NULL((void *)0))
249 timefmt = TIME_FORMAT"%b %e %T %Y";
250
251 errs = 0;
252 do {
253 if (argc == 0)
254 rc = fstat(STDIN_FILENO0, &st);
255 else if (usestat) {
256 /*
257 * Try stat() and if it fails, fall back to
258 * lstat() just in case we're examining a
259 * broken symlink.
260 */
261 if ((rc = stat(argv[0], &st)) == -1 &&
262 errno(*__errno()) == ENOENT2 &&
263 (rc = lstat(argv[0], &st)) == -1)
264 errno(*__errno()) = ENOENT2;
265 } else
266 rc = lstat(argv[0], &st);
267
268 if (rc == -1) {
269 errs = 1;
270 if (!quiet)
271 warn("%s",
272 argc == 0 ? "(stdin)" : argv[0]);
273 } else
274 output(&st, argv[0], statfmt, fn, nonl);
275
276 argv++;
277 argc--;
278 fn++;
279 } while (argc > 0);
280
281 return (errs);
282}
283
284void
285usage(const char *synopsis)
286{
287
288 (void)fprintf(stderr(&__sF[2]), "usage: %s %s\n", __progname, synopsis);
289 exit(1);
290}
291
292/*
293 * Parses a format string.
294 */
295void
296output(const struct stat *st, const char *file,
297 const char *statfmt, int fn, int nonl)
298{
299 int flags, size, prec, ofmt, hilo, what;
300 char buf[PATH_MAX1024 + 4 + 1];
301 const char *subfmt;
302 int nl, t, i;
303
304 nl = 1;
305 while (*statfmt != '\0') {
306
307 /*
308 * Non-format characters go straight out.
309 */
310 if (*statfmt != FMT_MAGIC'%') {
311 addchar(stdout, *statfmt, &nl)do { (void)fputc((*statfmt), ((&__sF[1]))); (*&nl) = (
(*statfmt) == '\n'); } while (0 );
312 statfmt++;
313 continue;
314 }
315
316 /*
317 * The current format "substring" starts here,
318 * and then we skip the magic.
319 */
320 subfmt = statfmt;
321 statfmt++;
322
323 /*
324 * Some simple one-character "formats".
325 */
326 switch (*statfmt) {
327 case SIMPLE_NEWLINE'n':
328 addchar(stdout, '\n', &nl)do { (void)fputc(('\n'), ((&__sF[1]))); (*&nl) = (('\n'
) == '\n'); } while (0 );
329 statfmt++;
330 continue;
331 case SIMPLE_TAB't':
332 addchar(stdout, '\t', &nl)do { (void)fputc(('\t'), ((&__sF[1]))); (*&nl) = (('\t'
) == '\n'); } while (0 );
333 statfmt++;
334 continue;
335 case SIMPLE_PERCENT'%':
336 addchar(stdout, '%', &nl)do { (void)fputc(('%'), ((&__sF[1]))); (*&nl) = (('%'
) == '\n'); } while (0 );
337 statfmt++;
338 continue;
339 case SIMPLE_NUMBER'@': {
340 char num[12], *p;
341
342 snprintf(num, sizeof(num), "%d", fn);
343 for (p = &num[0]; *p; p++)
344 addchar(stdout, *p, &nl)do { (void)fputc((*p), ((&__sF[1]))); (*&nl) = ((*p) ==
'\n'); } while (0 );
345 statfmt++;
346 continue;
347 }
348 }
349
350 /*
351 * This must be an actual format string. Format strings are
352 * similar to printf(3) formats up to a point, and are of
353 * the form:
354 *
355 * % required start of format
356 * [-# +0] opt. format characters
357 * size opt. field width
358 * . opt. decimal separator, followed by
359 * prec opt. precision
360 * fmt opt. output specifier (string, numeric, etc.)
361 * sub opt. sub field specifier (high, middle, low)
362 * datum required field specifier (size, mode, etc)
363 *
364 * Only the % and the datum selector are required. All data
365 * have reasonable default output forms. The "sub" specifier
366 * only applies to certain data (mode, dev, rdev, filetype).
367 * The symlink output defaults to STRING, yet will only emit
368 * the leading " -> " if STRING is explicitly specified. The
369 * sizerdev datum will generate rdev output for character or
370 * block devices, and size output for all others.
371 */
372 flags = 0;
373 do {
374 if (*statfmt == FMT_POUND'#')
375 flags |= FLAG_POUND0x01;
376 else if (*statfmt == FMT_SPACE' ')
377 flags |= FLAG_SPACE0x02;
378 else if (*statfmt == FMT_PLUS'+')
379 flags |= FLAG_PLUS0x04;
380 else if (*statfmt == FMT_ZERO'0')
381 flags |= FLAG_ZERO0x08;
382 else if (*statfmt == FMT_MINUS'-')
383 flags |= FLAG_MINUS0x10;
384 else
385 break;
386 statfmt++;
387 } while (1/*CONSTCOND*/);
388
389 size = -1;
390 if (isdigit((unsigned char)*statfmt)) {
391 size = 0;
392 while (isdigit((unsigned char)*statfmt)) {
393 size = (size * 10) + (*statfmt - '0');
394 statfmt++;
395 if (size < 0)
396 goto badfmt;
397 }
398 }
399
400 prec = -1;
401 if (*statfmt == FMT_DOT'.') {
402 statfmt++;
403
404 prec = 0;
405 while (isdigit((unsigned char)*statfmt)) {
406 prec = (prec * 10) + (*statfmt - '0');
407 statfmt++;
408 if (prec < 0)
409 goto badfmt;
410 }
411 }
412
413#define fmtcase(x, y) case (y): (x) = (y); statfmt++; break
414#define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break
415 switch (*statfmt) {
416 fmtcasef(ofmt, FMT_DECIMAL'D', FMTF_DECIMAL0x01);
417 fmtcasef(ofmt, FMT_OCTAL'O', FMTF_OCTAL0x02);
418 fmtcasef(ofmt, FMT_UNSIGNED'U', FMTF_UNSIGNED0x04);
419 fmtcasef(ofmt, FMT_HEX'X', FMTF_HEX0x08);
420 fmtcasef(ofmt, FMT_FLOAT'F', FMTF_FLOAT0x10);
421 fmtcasef(ofmt, FMT_STRING'S', FMTF_STRING0x20);
422 default:
423 ofmt = 0;
424 break;
425 }
426
427 switch (*statfmt) {
428 fmtcase(hilo, HIGH_PIECE'H');
429 fmtcase(hilo, MIDDLE_PIECE'M');
430 fmtcase(hilo, LOW_PIECE'L');
431 default:
432 hilo = 0;
433 break;
434 }
435
436 switch (*statfmt) {
437 fmtcase(what, SHOW_st_dev'd');
438 fmtcase(what, SHOW_st_ino'i');
439 fmtcase(what, SHOW_st_mode'p');
440 fmtcase(what, SHOW_st_nlink'l');
441 fmtcase(what, SHOW_st_uid'u');
442 fmtcase(what, SHOW_st_gid'g');
443 fmtcase(what, SHOW_st_rdev'r');
444 fmtcase(what, SHOW_st_atime'a');
445 fmtcase(what, SHOW_st_mtime'm');
446 fmtcase(what, SHOW_st_ctime'c');
447 fmtcase(what, SHOW_st_btime'B');
448 fmtcase(what, SHOW_st_size'z');
449 fmtcase(what, SHOW_st_blocks'b');
450 fmtcase(what, SHOW_st_blksize'k');
451 fmtcase(what, SHOW_st_flags'f');
452 fmtcase(what, SHOW_st_gen'v');
453 fmtcase(what, SHOW_symlink'Y');
454 fmtcase(what, SHOW_filetype'T');
455 fmtcase(what, SHOW_filename'N');
456 fmtcase(what, SHOW_sizerdev'Z');
457 default:
458 goto badfmt;
459 }
460#undef fmtcasef
461#undef fmtcase
462
463 t = format1(st, file, subfmt, statfmt - subfmt, buf,
464 sizeof(buf), flags, size, prec, ofmt, hilo, what);
465
466 for (i = 0; i < t && i < sizeof(buf) - 1; i++)
467 addchar(stdout, buf[i], &nl)do { (void)fputc((buf[i]), ((&__sF[1]))); (*&nl) = ((
buf[i]) == '\n'); } while (0 );
468
469 continue;
470
471 badfmt:
472 errx(1, "%.*s: bad format",
473 (int)(statfmt - subfmt + 1), subfmt);
474 }
475
476 if (!nl && !nonl)
477 (void)fputc('\n', stdout(&__sF[1]));
478 (void)fflush(stdout(&__sF[1]));
479}
480
481/*
482 * Arranges output according to a single parsed format substring.
483 */
484int
485format1(const struct stat *st,
486 const char *file,
487 const char *fmt, int flen,
488 char *buf, size_t blen,
489 int flags, int size, int prec, int ofmt,
490 int hilo, int what)
491{
492 u_int64_t data;
493 char lfmt[24], tmp[20];
494 char smode[12], sid[12], path[PATH_MAX1024 + 4];
495 const char *sdata;
496 struct tm *tm;
497 time_t secs;
498 long nsecs;
499 int l, small, formats, gottime, n;
500
501 formats = 0;
502 small = 0;
Value stored to 'small' is never read
503 gottime = 0;
504 secs = 0;
505 nsecs = 0;
506
507 /*
508 * First, pick out the data and tweak it based on hilo or
509 * specified output format (symlink output only).
510 */
511 switch (what) {
512 case SHOW_st_dev'd':
513 case SHOW_st_rdev'r':
514 small = (sizeof(st->st_dev) == 4);
515 data = (what == SHOW_st_dev'd') ? st->st_dev : st->st_rdev;
516 sdata = (what == SHOW_st_dev'd') ?
517 devname(st->st_dev, S_IFBLK0060000) :
518 devname(st->st_rdev,
519 S_ISCHR(st->st_mode)((st->st_mode & 0170000) == 0020000) ? S_IFCHR0020000 :
520 S_ISBLK(st->st_mode)((st->st_mode & 0170000) == 0060000) ? S_IFBLK0060000 :
521 0U);
522 if (sdata == NULL((void *)0))
523 sdata = "???";
524 if (hilo == HIGH_PIECE'H') {
525 data = major(data)(((unsigned)(data) >> 8) & 0xff);
526 hilo = 0;
527 } else if (hilo == LOW_PIECE'L') {
528 data = minor((unsigned)data)((unsigned)(((unsigned)data) & 0xff) | ((((unsigned)data)
& 0xffff0000) >> 8));
529 hilo = 0;
530 }
531 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08 |
532 FMTF_STRING0x20;
533 if (ofmt == 0)
534 ofmt = FMTF_UNSIGNED0x04;
535 break;
536 case SHOW_st_ino'i':
537 small = (sizeof(st->st_ino) == 4);
538 data = st->st_ino;
539 sdata = NULL((void *)0);
540 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
541 if (ofmt == 0)
542 ofmt = FMTF_UNSIGNED0x04;
543 break;
544 case SHOW_st_mode'p':
545 small = (sizeof(st->st_mode) == 4);
546 data = st->st_mode;
547 strmode(st->st_mode, smode);
548 l = strlen(smode);
549 if (smode[l - 1] == ' ')
550 smode[--l] = '\0';
551 switch (hilo) {
552 case HIGH_PIECE'H':
553 data >>= 12;
554 smode[4] = '\0';
555 sdata = smode + 1;
556 break;
557 case MIDDLE_PIECE'M':
558 data = (data >> 9) & 07;
559 smode[7] = '\0';
560 sdata = smode + 4;
561 break;
562 case LOW_PIECE'L':
563 data &= 0777;
564 smode[10] = '\0';
565 sdata = smode + 7;
566 break;
567 default:
568 sdata = smode;
569 break;
570 }
571 hilo = 0;
572 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08 |
573 FMTF_STRING0x20;
574 if (ofmt == 0)
575 ofmt = FMTF_OCTAL0x02;
576 break;
577 case SHOW_st_nlink'l':
578 small = (sizeof(st->st_dev) == 4);
579 data = st->st_nlink;
580 sdata = NULL((void *)0);
581 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
582 if (ofmt == 0)
583 ofmt = FMTF_UNSIGNED0x04;
584 break;
585 case SHOW_st_uid'u':
586 small = (sizeof(st->st_uid) == 4);
587 data = st->st_uid;
588 sdata = user_from_uid(st->st_uid, 1);
589 if (sdata == NULL((void *)0)) {
590 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
591 sdata = sid;
592 }
593 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08 |
594 FMTF_STRING0x20;
595 if (ofmt == 0)
596 ofmt = FMTF_UNSIGNED0x04;
597 break;
598 case SHOW_st_gid'g':
599 small = (sizeof(st->st_gid) == 4);
600 data = st->st_gid;
601 sdata = group_from_gid(st->st_gid, 1);
602 if (sdata == NULL((void *)0)) {
603 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
604 sdata = sid;
605 }
606 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08 |
607 FMTF_STRING0x20;
608 if (ofmt == 0)
609 ofmt = FMTF_UNSIGNED0x04;
610 break;
611 case SHOW_st_atime'a':
612 gottime = 1;
613 secs = st->st_atimest_atim.tv_sec;
614 nsecs = st->st_atim.tv_nsec;
615 /* FALLTHROUGH */
616 case SHOW_st_mtime'm':
617 if (!gottime) {
618 gottime = 1;
619 secs = st->st_mtimest_mtim.tv_sec;
620 nsecs = st->st_mtim.tv_nsec;
621 }
622 /* FALLTHROUGH */
623 case SHOW_st_ctime'c':
624 if (!gottime) {
625 gottime = 1;
626 secs = st->st_ctimest_ctim.tv_sec;
627 nsecs = st->st_ctim.tv_nsec;
628 }
629 /* FALLTHROUGH */
630 case SHOW_st_btime'B':
631 if (!gottime) {
632 gottime = 1;
633 secs = st->__st_birthtime__st_birthtim.tv_sec;
634 nsecs = st->__st_birthtim.tv_nsec;
635 }
636 small = (sizeof(secs) == 4);
637 data = secs;
638 tm = localtime(&secs);
639 (void)strftime(path, sizeof(path), timefmt, tm);
640 sdata = path;
641 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08 |
642 FMTF_FLOAT0x10 | FMTF_STRING0x20;
643 if (ofmt == 0)
644 ofmt = FMTF_DECIMAL0x01;
645 break;
646 case SHOW_st_size'z':
647 small = (sizeof(st->st_size) == 4);
648 data = st->st_size;
649 sdata = NULL((void *)0);
650 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
651 if (ofmt == 0)
652 ofmt = FMTF_UNSIGNED0x04;
653 break;
654 case SHOW_st_blocks'b':
655 small = (sizeof(st->st_blocks) == 4);
656 data = st->st_blocks;
657 sdata = NULL((void *)0);
658 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
659 if (ofmt == 0)
660 ofmt = FMTF_UNSIGNED0x04;
661 break;
662 case SHOW_st_blksize'k':
663 small = (sizeof(st->st_blksize) == 4);
664 data = st->st_blksize;
665 sdata = NULL((void *)0);
666 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
667 if (ofmt == 0)
668 ofmt = FMTF_UNSIGNED0x04;
669 break;
670 case SHOW_st_flags'f':
671 small = (sizeof(st->st_flags) == 4);
672 data = st->st_flags;
673 sdata = NULL((void *)0);
674 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
675 if (ofmt == 0)
676 ofmt = FMTF_UNSIGNED0x04;
677 break;
678 case SHOW_st_gen'v':
679 small = (sizeof(st->st_gen) == 4);
680 data = st->st_gen;
681 sdata = NULL((void *)0);
682 formats = FMTF_DECIMAL0x01 | FMTF_OCTAL0x02 | FMTF_UNSIGNED0x04 | FMTF_HEX0x08;
683 if (ofmt == 0)
684 ofmt = FMTF_UNSIGNED0x04;
685 break;
686 case SHOW_symlink'Y':
687 small = 0;
688 data = 0;
689 if (S_ISLNK(st->st_mode)((st->st_mode & 0170000) == 0120000)) {
690 snprintf(path, sizeof(path), " -> ");
691 l = readlink(file, path + 4, sizeof(path) - 4 - 1);
692 if (l == -1) {
693 l = 0;
694 path[0] = '\0';
695 }
696 path[l + 4] = '\0';
697 sdata = path + (ofmt == FMTF_STRING0x20 ? 0 : 4);
698 } else
699 sdata = "";
700
701 formats = FMTF_STRING0x20;
702 if (ofmt == 0)
703 ofmt = FMTF_STRING0x20;
704 break;
705 case SHOW_filetype'T':
706 small = 0;
707 data = 0;
708 sdata = smode;
709 smode[0] = '\0';
710 if (hilo == 0 || hilo == LOW_PIECE'L') {
711 switch (st->st_mode & S_IFMT0170000) {
712 case S_IFIFO0010000:
713 (void)strlcat(smode, "|", sizeof(smode));
714 break;
715 case S_IFDIR0040000:
716 (void)strlcat(smode, "/", sizeof(smode));
717 break;
718 case S_IFREG0100000:
719 if (st->st_mode & (S_IXUSR0000100 | S_IXGRP0000010 | S_IXOTH0000001))
720 (void)strlcat(smode, "*",
721 sizeof(smode));
722 break;
723 case S_IFLNK0120000:
724 (void)strlcat(smode, "@", sizeof(smode));
725 break;
726 case S_IFSOCK0140000:
727 (void)strlcat(smode, "=", sizeof(smode));
728 break;
729 }
730 hilo = 0;
731 } else if (hilo == HIGH_PIECE'H') {
732 switch (st->st_mode & S_IFMT0170000) {
733 case S_IFIFO0010000: sdata = "Fifo File"; break;
734 case S_IFCHR0020000: sdata = "Character Device"; break;
735 case S_IFDIR0040000: sdata = "Directory"; break;
736 case S_IFBLK0060000: sdata = "Block Device"; break;
737 case S_IFREG0100000: sdata = "Regular File"; break;
738 case S_IFLNK0120000: sdata = "Symbolic Link"; break;
739 case S_IFSOCK0140000: sdata = "Socket"; break;
740 default: sdata = "???"; break;
741 }
742 hilo = 0;
743 }
744 formats = FMTF_STRING0x20;
745 if (ofmt == 0)
746 ofmt = FMTF_STRING0x20;
747 break;
748 case SHOW_filename'N':
749 small = 0;
750 data = 0;
751 if (file == NULL((void *)0))
752 (void)strlcpy(path, "(stdin)", sizeof(path));
753 else
754 (void)strlcpy(path, file, sizeof(path));
755 sdata = path;
756 formats = FMTF_STRING0x20;
757 if (ofmt == 0)
758 ofmt = FMTF_STRING0x20;
759 break;
760 case SHOW_sizerdev'Z':
761 if (S_ISCHR(st->st_mode)((st->st_mode & 0170000) == 0020000) || S_ISBLK(st->st_mode)((st->st_mode & 0170000) == 0060000)) {
762 char majdev[20], mindev[20];
763 int l1, l2;
764
765 l1 = format1(st, file, fmt, flen,
766 majdev, sizeof(majdev), flags, size, prec,
767 ofmt, HIGH_PIECE'H', SHOW_st_rdev'r');
768 l2 = format1(st, file, fmt, flen,
769 mindev, sizeof(mindev), flags, size, prec,
770 ofmt, LOW_PIECE'L', SHOW_st_rdev'r');
771 n = snprintf(buf, blen, "%.*s,%.*s",
772 l1, majdev, l2, mindev);
773 return (n >= blen ? blen : n);
774 } else {
775 return (format1(st, file, fmt, flen, buf, blen,
776 flags, size, prec, ofmt, 0, SHOW_st_size'z'));
777 }
778 /*NOTREACHED*/
779 default:
780 errx(1, "%.*s: bad format", (int)flen, fmt);
781 }
782
783 /*
784 * If a subdatum was specified but not supported, or an output
785 * format was selected that is not supported, that's an error.
786 */
787 if (hilo != 0 || (ofmt & formats) == 0)
788 errx(1, "%.*s: bad format", (int)flen, fmt);
789
790 /*
791 * Assemble the format string for passing to printf(3).
792 */
793 lfmt[0] = '\0';
794 (void)strlcat(lfmt, "%", sizeof(lfmt));
795 if (flags & FLAG_POUND0x01)
796 (void)strlcat(lfmt, "#", sizeof(lfmt));
797 if (flags & FLAG_SPACE0x02)
798 (void)strlcat(lfmt, " ", sizeof(lfmt));
799 if (flags & FLAG_PLUS0x04)
800 (void)strlcat(lfmt, "+", sizeof(lfmt));
801 if (flags & FLAG_MINUS0x10)
802 (void)strlcat(lfmt, "-", sizeof(lfmt));
803 if (flags & FLAG_ZERO0x08)
804 (void)strlcat(lfmt, "0", sizeof(lfmt));
805
806 /*
807 * Only the timespecs support the FLOAT output format, and that
808 * requires work that differs from the other formats.
809 */
810 if (ofmt == FMTF_FLOAT0x10) {
811 /*
812 * Nothing after the decimal point, so just print seconds.
813 */
814 if (prec == 0) {
815 if (size != -1) {
816 (void)snprintf(tmp, sizeof(tmp), "%d", size);
817 (void)strlcat(lfmt, tmp, sizeof(lfmt));
818 }
819 (void)strlcat(lfmt, "lld", sizeof(lfmt));
820 n = snprintf(buf, blen, lfmt, (long long)secs);
821 return (n >= blen ? blen : n);
822 }
823
824 /*
825 * Unspecified precision gets all the precision we have:
826 * 9 digits.
827 */
828 if (prec == -1)
829 prec = 9;
830
831 /*
832 * Adjust the size for the decimal point and the digits
833 * that will follow.
834 */
835 size -= prec + 1;
836
837 /*
838 * Any leftover size that's legitimate will be used.
839 */
840 if (size > 0) {
841 (void)snprintf(tmp, sizeof(tmp), "%d", size);
842 (void)strlcat(lfmt, tmp, sizeof(lfmt));
843 }
844 (void)strlcat(lfmt, "lld", sizeof(lfmt));
845
846 /*
847 * The stuff after the decimal point always needs zero
848 * filling.
849 */
850 (void)strlcat(lfmt, ".%0", sizeof(lfmt));
851
852 /*
853 * We can "print" at most nine digits of precision. The
854 * rest we will pad on at the end.
855 */
856 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec);
857 (void)strlcat(lfmt, tmp, sizeof(lfmt));
858
859 /*
860 * For precision of less that nine digits, trim off the
861 * less significant figures.
862 */
863 for (; prec < 9; prec++)
864 nsecs /= 10;
865
866 /*
867 * Use the format, and then tack on any zeroes that
868 * might be required to make up the requested precision.
869 */
870 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs);
871 if (l >= blen)
872 return (l);
873 for (; prec > 9 && l < blen; prec--, l++)
874 (void)strlcat(buf, "0", blen);
875 return (l);
876 }
877
878 /*
879 * Add on size and precision, if specified, to the format.
880 */
881 if (size != -1) {
882 (void)snprintf(tmp, sizeof(tmp), "%d", size);
883 (void)strlcat(lfmt, tmp, sizeof(lfmt));
884 }
885 if (prec != -1) {
886 (void)snprintf(tmp, sizeof(tmp), ".%d", prec);
887 (void)strlcat(lfmt, tmp, sizeof(lfmt));
888 }
889
890 /*
891 * String output uses the temporary sdata.
892 */
893 if (ofmt == FMTF_STRING0x20) {
894 if (sdata == NULL((void *)0))
895 errx(1, "%.*s: bad format", (int)flen, fmt);
896 (void)strlcat(lfmt, "s", sizeof(lfmt));
897 n = snprintf(buf, blen, lfmt, sdata);
898 return (n >= blen ? blen : n);
899 }
900
901 /*
902 * Ensure that sign extension does not cause bad looking output
903 * for some forms.
904 */
905 if (small && ofmt != FMTF_DECIMAL0x01)
906 data = (u_int32_t)data;
907
908 /*
909 * The four "numeric" output forms.
910 */
911 (void)strlcat(lfmt, "ll", sizeof(lfmt));
912 switch (ofmt) {
913 case FMTF_DECIMAL0x01: (void)strlcat(lfmt, "d", sizeof(lfmt)); break;
914 case FMTF_OCTAL0x02: (void)strlcat(lfmt, "o", sizeof(lfmt)); break;
915 case FMTF_UNSIGNED0x04: (void)strlcat(lfmt, "u", sizeof(lfmt)); break;
916 case FMTF_HEX0x08: (void)strlcat(lfmt, "x", sizeof(lfmt)); break;
917 }
918
919 n = snprintf(buf, blen, lfmt, data);
920 return (n >= blen ? blen : n);
921}