2 * Copyright (c) 1988, 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1988, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)chown.c 8.8 (Berkeley) 4/4/94";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
62 void a_gid(const char *);
63 void a_uid(const char *);
64 void chownerr(const char *);
65 u_long id(const char *, const char *);
74 main(int argc, char **argv)
78 int Hflag, Lflag, Rflag, fflag, hflag, vflag;
79 int ch, fts_options, rval;
82 cp = strrchr(argv[0], '/');
83 cp = (cp != NULL) ? cp + 1 : argv[0];
84 ischown = (strcmp(cp, "chown") == 0);
86 Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
87 while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
123 fts_options = FTS_PHYSICAL;
124 if (hflag && (Hflag || Lflag))
125 errx(1, "the -R%c and -h options may not be "
126 "specified together", Hflag ? 'H' : 'L');
128 fts_options |= FTS_COMFOLLOW;
130 fts_options &= ~FTS_PHYSICAL;
131 fts_options |= FTS_LOGICAL;
134 fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
139 if ((cp = strchr(*argv, ':')) != NULL) {
144 else if ((cp = strchr(*argv, '.')) != NULL) {
145 warnx("seperation of user and group with a period is deprecated");
154 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
157 for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
158 switch (p->fts_info) {
159 case FTS_D: /* Change it at FTS_DP. */
161 fts_set(ftsp, p, FTS_SKIP);
163 case FTS_DNR: /* Warn, chown. */
164 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
167 case FTS_ERR: /* Warn, continue. */
169 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
175 * The only symlinks that end up here are ones that
176 * don't point to anything and ones that we found
177 * doing a physical walk.
186 if ((uid == (uid_t)-1 || uid == p->fts_statp->st_uid) &&
187 (gid == (gid_t)-1 || gid == p->fts_statp->st_gid))
189 if ((hflag ? lchown : chown)(p->fts_accpath, uid, gid) == -1) {
191 chownerr(p->fts_path);
196 printf("%s\n", p->fts_path);
209 if (*s == '\0') /* Argument was "uid[:.]". */
212 gid = ((gr = getgrnam(s)) != NULL) ? gr->gr_gid : id(s, "group");
220 if (*s == '\0') /* Argument was "[:.]gid". */
222 uid = ((pw = getpwnam(s)) != NULL) ? pw->pw_uid : id(s, "user");
226 id(const char *name, const char *type)
233 * We know that uid_t's and gid_t's are unsigned longs.
236 val = strtoul(name, &ep, 10);
240 errx(1, "%s: illegal %s name", name, type);
245 chownerr(const char *file)
247 static uid_t euid = -1;
248 static int ngroups = -1;
249 gid_t groups[NGROUPS_MAX];
251 /* Check for chown without being root. */
252 if (errno != EPERM || (uid != (uid_t)-1 &&
253 euid == (uid_t)-1 && (euid = geteuid()) != 0)) {
258 /* Check group membership; kernel just returns EPERM. */
259 if (gid != (gid_t)-1 && ngroups == -1 &&
260 euid == (uid_t)-1 && (euid = geteuid()) != 0) {
261 ngroups = getgroups(NGROUPS_MAX, groups);
262 while (--ngroups >= 0 && gid != groups[ngroups]);
264 warnx("you are not a member of group %s", gname);
276 (void)fprintf(stderr, "%s\n%s\n",
277 "usage: chown [-fhv] [-R [-H | -L | -P]] owner[:group]"
279 " chown [-fhv] [-R [-H | -L | -P]] :group file ...");
281 (void)fprintf(stderr, "%s\n",
282 "usage: chgrp [-fhv] [-R [-H | -L | -P]] group file ...");