2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static char const copyright[] =
33 "@(#) Copyright (c) 1989, 1993, 1994\n\
34 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/types.h>
56 static void usage(void);
57 static int may_have_nfs4acl(const FTSENT *ent);
60 main(int argc, char *argv[])
65 int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval;
69 int (*change_mode)(const char *, mode_t);
72 Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
73 while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1)
94 * In System V (and probably POSIX.2) the -h option
95 * causes chmod to change the mode of the symbolic
96 * link. 4.4BSD's symbolic links didn't have modes,
97 * so it was an undocumented noop. In FreeBSD 3.0,
98 * lchmod(2) is introduced and this option does real
105 * "-[rwx]" are valid mode commands. If they are the entire
106 * argument, getopt has moved past them, so decrement optind.
107 * Regardless, we're done argument processing.
109 case 'g': case 'o': case 'r': case 's':
110 case 't': case 'u': case 'w': case 'X': case 'x':
111 if (argv[optind - 1][0] == '-' &&
112 argv[optind - 1][1] == ch &&
113 argv[optind - 1][2] == '\0')
123 done: argv += optind;
130 fts_options = FTS_PHYSICAL;
133 "the -R and -h options may not be specified together.");
135 fts_options |= FTS_COMFOLLOW;
137 fts_options &= ~FTS_PHYSICAL;
138 fts_options |= FTS_LOGICAL;
141 fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
144 change_mode = lchmod;
149 if ((set = setmode(mode)) == NULL)
150 errx(1, "invalid file mode: %s", mode);
152 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
154 for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
155 switch (p->fts_info) {
156 case FTS_D: /* Change it at FTS_DP. */
158 fts_set(ftsp, p, FTS_SKIP);
160 case FTS_DNR: /* Warn, chmod, continue. */
161 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
164 case FTS_ERR: /* Warn, continue. */
166 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
169 case FTS_SL: /* Ignore. */
172 * The only symlinks that end up here are ones that
173 * don't point to anything and ones that we found
174 * doing a physical walk.
183 newmode = getmode(set, p->fts_statp->st_mode);
185 * With NFSv4 ACLs, it is possible that applying a mode
186 * identical to the one computed from an ACL will change
189 if (may_have_nfs4acl(p) == 0 &&
190 (newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS))
192 if ((*change_mode)(p->fts_accpath, newmode) && !fflag) {
193 warn("%s", p->fts_path);
197 (void)printf("%s", p->fts_path);
202 strmode(p->fts_statp->st_mode, m1);
203 strmode((p->fts_statp->st_mode &
204 S_IFMT) | newmode, m2);
206 (void)printf(": 0%o [%s] -> 0%o [%s]",
207 p->fts_statp->st_mode, m1,
208 (p->fts_statp->st_mode & S_IFMT) |
225 (void)fprintf(stderr,
226 "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n");
231 may_have_nfs4acl(const FTSENT *ent)
234 static dev_t previous_dev = (dev_t)-1;
235 static int supports_acls = -1;
237 if (previous_dev != ent->fts_statp->st_dev) {
238 previous_dev = ent->fts_statp->st_dev;
241 ret = pathconf(ent->fts_accpath, _PC_ACL_NFS4);
244 else if (ret < 0 && errno != EINVAL)
245 warn("%s", ent->fts_path);
248 return (supports_acls);