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";
44 static const char rcsid[] =
49 #include <sys/param.h>
62 void a_gid __P((const char *));
63 void a_uid __P((const char *));
64 void chownerr __P((const char *));
65 u_long id __P((const char *, const char *));
66 void usage __P((void));
67 int main __P((int argc, char *argv[]));
81 int Hflag, Lflag, Rflag, fflag, hflag, vflag;
82 int ch, fts_options, rval;
85 cp = strrchr(argv[0], '/');
86 cp = (cp != NULL) ? cp + 1 : argv[0];
87 ischown = (strcmp(cp, "chown") == 0);
89 Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
90 while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
126 fts_options = FTS_PHYSICAL;
127 if (hflag && (Hflag || Lflag))
128 errx(1, "the -R%c and -h options may not be "
129 "specified together", Hflag ? 'H' : 'L');
131 fts_options |= FTS_COMFOLLOW;
133 fts_options &= ~FTS_PHYSICAL;
134 fts_options |= FTS_LOGICAL;
137 fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
142 if ((cp = strchr(*argv, ':')) != NULL) {
147 else if ((cp = strchr(*argv, '.')) != NULL) {
156 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
159 for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
160 switch (p->fts_info) {
161 case FTS_D: /* Change it at FTS_DP. */
163 fts_set(ftsp, p, FTS_SKIP);
165 case FTS_DNR: /* Warn, chown. */
166 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
169 case FTS_ERR: /* Warn, continue. */
171 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
177 * The only symlinks that end up here are ones that
178 * don't point to anything and ones that we found
179 * doing a physical walk.
188 if ((uid == (uid_t)-1 || uid == p->fts_statp->st_uid) &&
189 (gid == (gid_t)-1 || gid == p->fts_statp->st_gid))
191 if ((hflag ? lchown : chown)(p->fts_accpath, uid, gid) == -1) {
193 chownerr(p->fts_path);
198 printf("%s\n", p->fts_path);
212 if (*s == '\0') /* Argument was "uid[:.]". */
215 gid = ((gr = getgrnam(s)) != NULL) ? gr->gr_gid : id(s, "group");
224 if (*s == '\0') /* Argument was "[:.]gid". */
226 uid = ((pw = getpwnam(s)) != NULL) ? pw->pw_uid : id(s, "user");
231 const char *name, *type;
238 * We know that uid_t's and gid_t's are unsigned longs.
241 val = strtoul(name, &ep, 10);
245 errx(1, "%s: illegal %s name", name, type);
253 static uid_t euid = -1;
254 static int ngroups = -1;
255 gid_t groups[NGROUPS_MAX];
257 /* Check for chown without being root. */
258 if (errno != EPERM ||
259 (uid != (uid_t)-1 && euid == (uid_t)-1 && (euid = geteuid()) != 0))
262 /* Check group membership; kernel just returns EPERM. */
263 if (gid != (gid_t)-1 && ngroups == -1 &&
264 euid == (uid_t)-1 && (euid = geteuid()) != 0) {
265 ngroups = getgroups(NGROUPS_MAX, groups);
266 while (--ngroups >= 0 && gid != groups[ngroups]);
268 errx(1, "you are not a member of group %s", gname);
278 (void)fprintf(stderr, "%s\n%s\n",
279 "usage: chown [-fhv] [-R [-H | -L | -P]] owner[:group]"
281 " chown [-fhv] [-R [-H | -L | -P]] :group file ...");
283 (void)fprintf(stderr, "%s\n",
284 "usage: chgrp [-fhv] [-R [-H | -L | -P]] group file ...");