| 1 | /*-
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| 2 | * Copyright (c) 1989, 1993, 1994
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 4. Neither the name of the University nor the names of its contributors
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| 14 | * may be used to endorse or promote products derived from this software
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| 15 | * without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | #if 0
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| 31 | #ifndef lint
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| 32 | static char const copyright[] =
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| 33 | "@(#) Copyright (c) 1989, 1993, 1994\n\
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| 34 | The Regents of the University of California. All rights reserved.\n";
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| 35 | #endif /* not lint */
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| 36 |
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| 37 | #ifndef lint
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| 38 | static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94";
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| 39 | #endif /* not lint */
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| 40 | #endif
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| 41 | #include <sys/cdefs.h>
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| 42 | __FBSDID("$FreeBSD: src/bin/chmod/chmod.c,v 1.33 2005/01/10 08:39:20 imp Exp $");
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| 43 |
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| 44 | #include <sys/types.h>
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| 45 | #include <sys/stat.h>
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| 46 |
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| 47 | #include <err.h>
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| 48 | #include <errno.h>
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| 49 | #include <fts.h>
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| 50 | #include <limits.h>
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| 51 | #include <stdio.h>
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| 52 | #include <stdlib.h>
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| 53 | #include <string.h>
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| 54 | #include <unistd.h>
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| 55 |
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| 56 | void usage(void);
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| 57 |
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| 58 | int
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| 59 | main(int argc, char *argv[])
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| 60 | {
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| 61 | FTS *ftsp;
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| 62 | FTSENT *p;
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| 63 | mode_t *set;
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| 64 | int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval;
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| 65 | int vflag;
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| 66 | char *mode;
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| 67 | mode_t newmode;
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| 68 | int (*change_mode)(const char *, mode_t);
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| 69 |
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| 70 | set = NULL;
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| 71 | Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
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| 72 | while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1)
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| 73 | switch (ch) {
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| 74 | case 'H':
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| 75 | Hflag = 1;
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| 76 | Lflag = 0;
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| 77 | break;
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| 78 | case 'L':
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| 79 | Lflag = 1;
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| 80 | Hflag = 0;
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| 81 | break;
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| 82 | case 'P':
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| 83 | Hflag = Lflag = 0;
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| 84 | break;
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| 85 | case 'R':
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| 86 | Rflag = 1;
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| 87 | break;
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| 88 | case 'f':
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| 89 | fflag = 1;
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| 90 | break;
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| 91 | case 'h':
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| 92 | /*
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| 93 | * In System V (and probably POSIX.2) the -h option
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| 94 | * causes chmod to change the mode of the symbolic
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| 95 | * link. 4.4BSD's symbolic links didn't have modes,
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| 96 | * so it was an undocumented noop. In FreeBSD 3.0,
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| 97 | * lchmod(2) is introduced and this option does real
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| 98 | * work.
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| 99 | */
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| 100 | hflag = 1;
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| 101 | break;
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| 102 | /*
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| 103 | * XXX
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| 104 | * "-[rwx]" are valid mode commands. If they are the entire
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| 105 | * argument, getopt has moved past them, so decrement optind.
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| 106 | * Regardless, we're done argument processing.
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| 107 | */
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| 108 | case 'g': case 'o': case 'r': case 's':
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| 109 | case 't': case 'u': case 'w': case 'X': case 'x':
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| 110 | if (argv[optind - 1][0] == '-' &&
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| 111 | argv[optind - 1][1] == ch &&
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| 112 | argv[optind - 1][2] == '\0')
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| 113 | --optind;
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| 114 | goto done;
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| 115 | case 'v':
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| 116 | vflag++;
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| 117 | break;
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| 118 | case '?':
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| 119 | default:
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| 120 | usage();
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| 121 | }
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| 122 | done: argv += optind;
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| 123 | argc -= optind;
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| 124 |
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| 125 | if (argc < 2)
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| 126 | usage();
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| 127 |
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| 128 | if (Rflag) {
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| 129 | fts_options = FTS_PHYSICAL;
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| 130 | if (hflag)
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| 131 | errx(1,
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| 132 | "the -R and -h options may not be specified together.");
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| 133 | if (Hflag)
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| 134 | fts_options |= FTS_COMFOLLOW;
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| 135 | if (Lflag) {
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| 136 | fts_options &= ~FTS_PHYSICAL;
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| 137 | fts_options |= FTS_LOGICAL;
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| 138 | }
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| 139 | } else
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| 140 | fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
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| 141 |
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| 142 | if (hflag)
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| 143 | change_mode = lchmod;
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| 144 | else
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| 145 | change_mode = chmod;
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| 146 |
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| 147 | mode = *argv;
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| 148 | if ((set = setmode(mode)) == NULL)
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| 149 | errx(1, "invalid file mode: %s", mode);
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| 150 |
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| 151 | if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
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| 152 | err(1, "fts_open");
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| 153 | for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
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| 154 | switch (p->fts_info) {
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| 155 | case FTS_D: /* Change it at FTS_DP. */
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| 156 | if (!Rflag)
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| 157 | fts_set(ftsp, p, FTS_SKIP);
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| 158 | continue;
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| 159 | case FTS_DNR: /* Warn, chmod, continue. */
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| 160 | warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
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| 161 | rval = 1;
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| 162 | break;
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| 163 | case FTS_ERR: /* Warn, continue. */
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| 164 | case FTS_NS:
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| 165 | warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
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| 166 | rval = 1;
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| 167 | continue;
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| 168 | case FTS_SL: /* Ignore. */
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| 169 | case FTS_SLNONE:
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| 170 | /*
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| 171 | * The only symlinks that end up here are ones that
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| 172 | * don't point to anything and ones that we found
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| 173 | * doing a physical walk.
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| 174 | */
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| 175 | if (!hflag)
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| 176 | continue;
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| 177 | /* else */
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| 178 | /* FALLTHROUGH */
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| 179 | default:
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| 180 | break;
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| 181 | }
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| 182 | newmode = getmode(set, p->fts_statp->st_mode);
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| 183 | if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS))
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| 184 | continue;
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| 185 | if ((*change_mode)(p->fts_accpath, newmode) && !fflag) {
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| 186 | warn("%s", p->fts_path);
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| 187 | rval = 1;
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| 188 | } else {
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| 189 | if (vflag) {
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| 190 | (void)printf("%s", p->fts_path);
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| 191 |
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| 192 | if (vflag > 1) {
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| 193 | char m1[12], m2[12];
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| 194 |
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| 195 | strmode(p->fts_statp->st_mode, m1);
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| 196 | strmode((p->fts_statp->st_mode &
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| 197 | S_IFMT) | newmode, m2);
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| 198 |
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| 199 | (void)printf(": 0%o [%s] -> 0%o [%s]",
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| 200 | p->fts_statp->st_mode, m1,
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| 201 | (p->fts_statp->st_mode & S_IFMT) |
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| 202 | newmode, m2);
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| 203 | }
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| 204 | (void)printf("\n");
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| 205 | }
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| 206 |
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| 207 | }
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| 208 | }
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| 209 | if (errno)
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| 210 | err(1, "fts_read");
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| 211 | free(set);
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| 212 | exit(rval);
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| 213 | }
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| 214 |
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| 215 | void
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| 216 | usage(void)
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| 217 | {
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| 218 | (void)fprintf(stderr,
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| 219 | "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n");
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| 220 | exit(1);
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| 221 | }
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