2 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * This code is derived from software contributed to The NetBSD Foundation
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
29 * $NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $
30 * $OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $
31 * $FreeBSD: head/usr.bin/stat/stat.c 265893 2014-05-11 18:49:18Z thomas $
36 #else /* HAVE_CONFIG_H */
37 #define HAVE_STRUCT_STAT_ST_FLAGS 1
38 #define HAVE_STRUCT_STAT_ST_GEN 1
39 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 0
40 #define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
41 #define HAVE_DEVNAME 1
42 #endif /* HAVE_CONFIG_H */
44 #include <sys/param.h>
45 #include <sys/types.h>
47 #include <sys/mount.h>
62 #if HAVE_STRUCT_STAT_ST_FLAGS
65 #define SHELL_F " st_flags=%f"
66 #else /* HAVE_STRUCT_STAT_ST_FLAGS */
70 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
72 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
73 #define DEF_B "\"%SB\" "
75 #define SHELL_B "st_birthtime=%B "
76 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
80 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
82 #if HAVE_STRUCT_STAT_ST_ATIM
83 #define st_atimespec st_atim
84 #define st_ctimespec st_ctim
85 #define st_mtimespec st_mtim
86 #endif /* HAVE_STRUCT_STAT_ST_ATIM */
89 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \
91 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \
93 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY"
94 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY"
95 #define SHELL_FORMAT \
96 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \
97 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \
98 "st_atime=%a st_mtime=%m st_ctime=%c " SHELL_B \
99 "st_blksize=%k st_blocks=%b" SHELL_F
100 #define LINUX_FORMAT \
102 " Size: %-11z FileType: %HT%n" \
103 " Mode: (%OMp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \
104 "Device: %Hd,%Ld Inode: %i Links: %l%n" \
109 #define TIME_FORMAT "%b %e %T %Y"
111 #define FLAG_POUND 0x01
112 #define FLAG_SPACE 0x02
113 #define FLAG_PLUS 0x04
114 #define FLAG_ZERO 0x08
115 #define FLAG_MINUS 0x10
118 * These format characters must all be unique, except the magic one.
120 #define FMT_MAGIC '%'
123 #define SIMPLE_NEWLINE 'n'
124 #define SIMPLE_TAB 't'
125 #define SIMPLE_PERCENT '%'
126 #define SIMPLE_NUMBER '@'
128 #define FMT_POUND '#'
129 #define FMT_SPACE ' '
132 #define FMT_MINUS '-'
134 #define FMT_DECIMAL 'D'
135 #define FMT_OCTAL 'O'
136 #define FMT_UNSIGNED 'U'
138 #define FMT_FLOAT 'F'
139 #define FMT_STRING 'S'
141 #define FMTF_DECIMAL 0x01
142 #define FMTF_OCTAL 0x02
143 #define FMTF_UNSIGNED 0x04
144 #define FMTF_HEX 0x08
145 #define FMTF_FLOAT 0x10
146 #define FMTF_STRING 0x20
148 #define HIGH_PIECE 'H'
149 #define MIDDLE_PIECE 'M'
150 #define LOW_PIECE 'L'
152 #define SHOW_realpath 'R'
153 #define SHOW_st_dev 'd'
154 #define SHOW_st_ino 'i'
155 #define SHOW_st_mode 'p'
156 #define SHOW_st_nlink 'l'
157 #define SHOW_st_uid 'u'
158 #define SHOW_st_gid 'g'
159 #define SHOW_st_rdev 'r'
160 #define SHOW_st_atime 'a'
161 #define SHOW_st_mtime 'm'
162 #define SHOW_st_ctime 'c'
163 #define SHOW_st_btime 'B'
164 #define SHOW_st_size 'z'
165 #define SHOW_st_blocks 'b'
166 #define SHOW_st_blksize 'k'
167 #define SHOW_st_flags 'f'
168 #define SHOW_st_gen 'v'
169 #define SHOW_symlink 'Y'
170 #define SHOW_filetype 'T'
171 #define SHOW_filename 'N'
172 #define SHOW_sizerdev 'Z'
174 static void usage(const char *) __dead2;
175 static void output(const struct stat *, const char *,
176 const char *, int, int);
177 static int format1(const struct stat *, /* stat info */
178 const char *, /* the file name */
179 const char *, int, /* the format string itself */
180 char *, size_t, /* a place to put the output */
181 int, int, int, int, /* the parsed format */
183 static int hex2byte(const char [2]);
184 #if HAVE_STRUCT_STAT_ST_FLAGS
185 static char *xfflagstostr(unsigned long);
188 static const char *timefmt;
191 #define addchar(s, c, nl) \
194 (*nl) = ((c) == '\n'); \
195 } while (0/*CONSTCOND*/)
198 main(int argc, char *argv[])
201 int ch, rc, errs, am_readlink;
202 int lsF, fmtchar, usestat, nfs_handle, fn, nonl, quiet;
203 const char *statfmt, *options, *synopsis;
204 char dname[sizeof _PATH_DEV + MNAMELEN] = _PATH_DEV;
219 if (strcmp(getprogname(), "readlink") == 0) {
222 synopsis = "[-fn] [file ...]";
227 options = "f:FHlLnqrst:x";
228 synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] "
229 "[-t timefmt] [file|handle ...]";
232 while ((ch = getopt(argc, argv, options)) != -1)
261 errx(1, "can't use format '%c' with '%c'",
276 if (fmtchar == '\0') {
281 statfmt = DEF_FORMAT;
285 if (lsF && fmtchar != 'l')
286 errx(1, "can't use format '%c' with -F", fmtchar);
290 /* statfmt already set */
293 statfmt = lsF ? LSF_FORMAT : LS_FORMAT;
296 statfmt = RAW_FORMAT;
299 statfmt = SHELL_FORMAT;
302 statfmt = LINUX_FORMAT;
312 timefmt = TIME_FORMAT;
317 if (fdevname_r(STDIN_FILENO, dname +
318 sizeof _PATH_DEV - 1, MNAMELEN) == 0)
322 rc = fstat(STDIN_FILENO, &st);
329 bzero(&fhnd, sizeof(fhnd));
330 j = MIN(2 * sizeof(fhnd), strlen(file));
335 rc = hex2byte(&file[j - 2]);
338 ((char*) &fhnd)[j / 2 - 1] = rc;
345 rc = fhstat(&fhnd, &st);
347 } else if (usestat) {
349 * Try stat() and if it fails, fall back to
350 * lstat() just in case we're examining a
353 if ((rc = stat(file, &st)) == -1 &&
355 (rc = lstat(file, &st)) == -1)
359 rc = lstat(file, &st);
366 warn("%s: stat", file);
369 output(&st, file, statfmt, fn, nonl);
376 return (am_readlink ? linkfail : errs);
379 #if HAVE_STRUCT_STAT_ST_FLAGS
381 * fflagstostr() wrapper that leaks only once
384 xfflagstostr(unsigned long fflags)
386 static char *str = NULL;
391 str = fflagstostr(fflags);
393 err(1, "fflagstostr");
396 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
399 usage(const char *synopsis)
402 fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);
407 * Parses a format string.
410 output(const struct stat *st, const char *file,
411 const char *statfmt, int fn, int nonl)
413 int flags, size, prec, ofmt, hilo, what;
414 char buf[PATH_MAX + 4 + 1];
419 while (*statfmt != '\0') {
422 * Non-format characters go straight out.
424 if (*statfmt != FMT_MAGIC) {
425 addchar(stdout, *statfmt, &nl);
431 * The current format "substring" starts here,
432 * and then we skip the magic.
438 * Some simple one-character "formats".
442 addchar(stdout, '\n', &nl);
446 addchar(stdout, '\t', &nl);
450 addchar(stdout, '%', &nl);
453 case SIMPLE_NUMBER: {
456 snprintf(num, sizeof(num), "%d", fn);
457 for (p = &num[0]; *p; p++)
458 addchar(stdout, *p, &nl);
465 * This must be an actual format string. Format strings are
466 * similar to printf(3) formats up to a point, and are of
469 * % required start of format
470 * [-# +0] opt. format characters
471 * size opt. field width
472 * . opt. decimal separator, followed by
473 * prec opt. precision
474 * fmt opt. output specifier (string, numeric, etc.)
475 * sub opt. sub field specifier (high, middle, low)
476 * datum required field specifier (size, mode, etc)
478 * Only the % and the datum selector are required. All data
479 * have reasonable default output forms. The "sub" specifier
480 * only applies to certain data (mode, dev, rdev, filetype).
481 * The symlink output defaults to STRING, yet will only emit
482 * the leading " -> " if STRING is explicitly specified. The
483 * sizerdev datum will generate rdev output for character or
484 * block devices, and size output for all others.
488 if (*statfmt == FMT_POUND)
490 else if (*statfmt == FMT_SPACE)
492 else if (*statfmt == FMT_PLUS)
494 else if (*statfmt == FMT_ZERO)
496 else if (*statfmt == FMT_MINUS)
501 } while (1/*CONSTCOND*/);
504 if (isdigit((unsigned)*statfmt)) {
506 while (isdigit((unsigned)*statfmt)) {
507 size = (size * 10) + (*statfmt - '0');
515 if (*statfmt == FMT_DOT) {
519 while (isdigit((unsigned)*statfmt)) {
520 prec = (prec * 10) + (*statfmt - '0');
527 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break
528 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break
530 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL);
531 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL);
532 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED);
533 fmtcasef(ofmt, FMT_HEX, FMTF_HEX);
534 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT);
535 fmtcasef(ofmt, FMT_STRING, FMTF_STRING);
542 fmtcase(hilo, HIGH_PIECE);
543 fmtcase(hilo, MIDDLE_PIECE);
544 fmtcase(hilo, LOW_PIECE);
551 fmtcase(what, SHOW_realpath);
552 fmtcase(what, SHOW_st_dev);
553 fmtcase(what, SHOW_st_ino);
554 fmtcase(what, SHOW_st_mode);
555 fmtcase(what, SHOW_st_nlink);
556 fmtcase(what, SHOW_st_uid);
557 fmtcase(what, SHOW_st_gid);
558 fmtcase(what, SHOW_st_rdev);
559 fmtcase(what, SHOW_st_atime);
560 fmtcase(what, SHOW_st_mtime);
561 fmtcase(what, SHOW_st_ctime);
562 fmtcase(what, SHOW_st_btime);
563 fmtcase(what, SHOW_st_size);
564 fmtcase(what, SHOW_st_blocks);
565 fmtcase(what, SHOW_st_blksize);
566 fmtcase(what, SHOW_st_flags);
567 fmtcase(what, SHOW_st_gen);
568 fmtcase(what, SHOW_symlink);
569 fmtcase(what, SHOW_filetype);
570 fmtcase(what, SHOW_filename);
571 fmtcase(what, SHOW_sizerdev);
580 subfmt, statfmt - subfmt,
582 flags, size, prec, ofmt, hilo, what);
584 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++)
585 addchar(stdout, buf[i], &nl);
590 errx(1, "%.*s: bad format",
591 (int)(statfmt - subfmt + 1), subfmt);
600 * Arranges output according to a single parsed format substring.
603 format1(const struct stat *st,
605 const char *fmt, int flen,
606 char *buf, size_t blen,
607 int flags, int size, int prec, int ofmt,
611 char *stmp, lfmt[24], tmp[20];
613 char smode[12], sid[12], path[PATH_MAX + 4];
616 const struct timespec *tsp;
619 int l, small, formats;
626 * First, pick out the data and tweak it based on hilo or
627 * specified output format (symlink output only).
632 small = (sizeof(st->st_dev) == 4);
633 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev;
635 sdata = (what == SHOW_st_dev) ?
636 devname(st->st_dev, S_IFBLK) :
638 S_ISCHR(st->st_mode) ? S_IFCHR :
639 S_ISBLK(st->st_mode) ? S_IFBLK :
643 #endif /* HAVE_DEVNAME */
644 if (hilo == HIGH_PIECE) {
648 else if (hilo == LOW_PIECE) {
649 data = minor((unsigned)data);
652 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
655 #else /* HAVE_DEVNAME */
657 #endif /* HAVE_DEVNAME */
659 ofmt = FMTF_UNSIGNED;
662 small = (sizeof(st->st_ino) == 4);
665 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
667 ofmt = FMTF_UNSIGNED;
670 small = (sizeof(st->st_mode) == 4);
672 strmode(st->st_mode, smode);
675 if (stmp[l - 1] == ' ')
677 if (hilo == HIGH_PIECE) {
683 else if (hilo == MIDDLE_PIECE) {
684 data = (data >> 9) & 07;
689 else if (hilo == LOW_PIECE) {
696 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
702 small = (sizeof(st->st_dev) == 4);
705 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
707 ofmt = FMTF_UNSIGNED;
710 small = (sizeof(st->st_uid) == 4);
712 if ((pw = getpwuid(st->st_uid)) != NULL)
715 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
718 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
721 ofmt = FMTF_UNSIGNED;
724 small = (sizeof(st->st_gid) == 4);
726 if ((gr = getgrgid(st->st_gid)) != NULL)
729 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
732 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
735 ofmt = FMTF_UNSIGNED;
738 tsp = &st->st_atimespec;
742 tsp = &st->st_mtimespec;
746 tsp = &st->st_ctimespec;
748 #if HAVE_STRUCT_STAT_ST_BIRTHTIME
751 tsp = &st->st_birthtimespec;
752 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
753 ts = *tsp; /* copy so we can muck with it */
754 small = (sizeof(ts.tv_sec) == 4);
756 tm = localtime(&ts.tv_sec);
759 tm = localtime(&ts.tv_sec);
761 strftime(path, sizeof(path), timefmt, tm);
763 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
764 FMTF_FLOAT | FMTF_STRING;
769 small = (sizeof(st->st_size) == 4);
772 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
774 ofmt = FMTF_UNSIGNED;
777 small = (sizeof(st->st_blocks) == 4);
778 data = st->st_blocks;
780 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
782 ofmt = FMTF_UNSIGNED;
784 case SHOW_st_blksize:
785 small = (sizeof(st->st_blksize) == 4);
786 data = st->st_blksize;
788 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
790 ofmt = FMTF_UNSIGNED;
792 #if HAVE_STRUCT_STAT_ST_FLAGS
794 small = (sizeof(st->st_flags) == 4);
796 sdata = xfflagstostr(st->st_flags);
799 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
802 ofmt = FMTF_UNSIGNED;
804 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */
805 #if HAVE_STRUCT_STAT_ST_GEN
807 small = (sizeof(st->st_gen) == 4);
810 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
812 ofmt = FMTF_UNSIGNED;
814 #endif /* HAVE_STRUCT_STAT_ST_GEN */
819 strlcpy(path, "(stdin)", sizeof(path));
822 snprintf(path, sizeof(path), " -> ");
823 if (realpath(file, path + 4) == NULL) {
828 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
831 formats = FMTF_STRING;
838 if (S_ISLNK(st->st_mode)) {
839 snprintf(path, sizeof(path), " -> ");
840 l = readlink(file, path + 4, sizeof(path) - 4 - 1);
847 sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
853 formats = FMTF_STRING;
861 if (hilo == 0 || hilo == LOW_PIECE) {
862 switch (st->st_mode & S_IFMT) {
863 case S_IFIFO: sdata = "|"; break;
864 case S_IFDIR: sdata = "/"; break;
867 (S_IXUSR | S_IXGRP | S_IXOTH))
870 case S_IFLNK: sdata = "@"; break;
871 case S_IFSOCK: sdata = "="; break;
873 case S_IFWHT: sdata = "%"; break;
876 case S_IFDOOR: sdata = ">"; break;
877 #endif /* S_IFDOOR */
881 else if (hilo == HIGH_PIECE) {
882 switch (st->st_mode & S_IFMT) {
883 case S_IFIFO: sdata = "Fifo File"; break;
884 case S_IFCHR: sdata = "Character Device"; break;
885 case S_IFDIR: sdata = "Directory"; break;
886 case S_IFBLK: sdata = "Block Device"; break;
887 case S_IFREG: sdata = "Regular File"; break;
888 case S_IFLNK: sdata = "Symbolic Link"; break;
889 case S_IFSOCK: sdata = "Socket"; break;
891 case S_IFWHT: sdata = "Whiteout File"; break;
894 case S_IFDOOR: sdata = "Door"; break;
895 #endif /* S_IFDOOR */
896 default: sdata = "???"; break;
900 formats = FMTF_STRING;
907 strlcpy(path, file, sizeof(path));
909 formats = FMTF_STRING;
914 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
915 char majdev[20], mindev[20];
921 majdev, sizeof(majdev),
923 ofmt, HIGH_PIECE, SHOW_st_rdev);
927 mindev, sizeof(mindev),
929 ofmt, LOW_PIECE, SHOW_st_rdev);
930 return (snprintf(buf, blen, "%.*s,%.*s",
931 l1, majdev, l2, mindev));
939 ofmt, 0, SHOW_st_size));
943 errx(1, "%.*s: bad format", (int)flen, fmt);
947 * If a subdatum was specified but not supported, or an output
948 * format was selected that is not supported, that's an error.
950 if (hilo != 0 || (ofmt & formats) == 0)
951 errx(1, "%.*s: bad format", (int)flen, fmt);
954 * Assemble the format string for passing to printf(3).
958 if (flags & FLAG_POUND)
960 if (flags & FLAG_SPACE)
962 if (flags & FLAG_PLUS)
964 if (flags & FLAG_MINUS)
966 if (flags & FLAG_ZERO)
970 * Only the timespecs support the FLOAT output format, and that
971 * requires work that differs from the other formats.
973 if (ofmt == FMTF_FLOAT) {
975 * Nothing after the decimal point, so just print seconds.
979 snprintf(tmp, sizeof(tmp), "%d", size);
983 return (snprintf(buf, blen, lfmt,
984 (long long)ts.tv_sec));
988 * Unspecified precision gets all the precision we have:
995 * Adjust the size for the decimal point and the digits
1001 * Any leftover size that's legitimate will be used.
1004 snprintf(tmp, sizeof(tmp), "%d", size);
1007 /* Seconds: time_t cast to long long. */
1008 strcat(lfmt, "lld");
1011 * The stuff after the decimal point always needs zero
1014 strcat(lfmt, ".%0");
1017 * We can "print" at most nine digits of precision. The
1018 * rest we will pad on at the end.
1020 * Nanoseconds: long.
1022 snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec);
1026 * For precision of less that nine digits, trim off the
1027 * less significant figures.
1029 for (; prec < 9; prec++)
1033 * Use the format, and then tack on any zeroes that
1034 * might be required to make up the requested precision.
1036 l = snprintf(buf, blen, lfmt, (long long)ts.tv_sec, ts.tv_nsec);
1037 for (; prec > 9 && l < (int)blen; prec--, l++)
1043 * Add on size and precision, if specified, to the format.
1046 snprintf(tmp, sizeof(tmp), "%d", size);
1050 snprintf(tmp, sizeof(tmp), ".%d", prec);
1055 * String output uses the temporary sdata.
1057 if (ofmt == FMTF_STRING) {
1059 errx(1, "%.*s: bad format", (int)flen, fmt);
1061 return (snprintf(buf, blen, lfmt, sdata));
1065 * Ensure that sign extension does not cause bad looking output
1068 if (small && ofmt != FMTF_DECIMAL)
1069 data = (u_int32_t)data;
1072 * The four "numeric" output forms.
1076 case FMTF_DECIMAL: strcat(lfmt, "d"); break;
1077 case FMTF_OCTAL: strcat(lfmt, "o"); break;
1078 case FMTF_UNSIGNED: strcat(lfmt, "u"); break;
1079 case FMTF_HEX: strcat(lfmt, "x"); break;
1082 return (snprintf(buf, blen, lfmt, data));
1086 #define hex2nibble(c) (c <= '9' ? c - '0' : toupper(c) - 'A' + 10)
1088 hex2byte(const char c[2]) {
1089 if (!(ishexnumber(c[0]) && ishexnumber(c[1])))
1091 return (hex2nibble(c[0]) << 4) + hex2nibble(c[1]);