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
33 * @(#) Copyright (c) 1988, 1993, 1994 The Regents of the University of California. All rights reserved.
34 * @(#)chown.c 8.8 (Berkeley) 4/4/94
35 * $FreeBSD: src/usr.sbin/chown/chown.c,v 1.15.2.3 2002/08/07 21:24:33 schweikh Exp $
36 * $DragonFly: src/usr.sbin/chown/chown.c,v 1.2 2003/06/17 04:29:52 dillon Exp $
39 #include <sys/param.h>
54 void a_gid __P((char *));
55 void a_uid __P((char *));
56 void chownerr __P((char *));
57 u_long id __P((char *, char *));
58 void usage __P((void));
62 int Rflag, ischown, fflag, hflag, vflag;
72 int Hflag, Lflag, Pflag, ch, fts_options, hflag, rval;
75 myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv;
76 ischown = myname[2] == 'o';
78 Hflag = Lflag = Pflag = hflag = vflag = 0;
79 while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
115 fts_options = FTS_PHYSICAL;
117 if (hflag && (Lflag || Hflag))
118 errx(1, "the -R and -h options may not be specified together");
120 fts_options |= FTS_COMFOLLOW;
122 fts_options &= ~FTS_PHYSICAL;
123 fts_options |= FTS_LOGICAL;
129 if ((cp = strchr(*argv, ':')) != NULL) {
134 else if ((cp = strchr(*argv, '.')) != NULL) {
135 warnx("separation of user and group with a period is deprecated");
144 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
147 for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
148 switch (p->fts_info) {
149 case FTS_D: /* Change it at FTS_DP. */
151 fts_set(ftsp, p, FTS_SKIP);
153 case FTS_DNR: /* Warn, chown, continue. */
154 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
157 case FTS_ERR: /* Warn, continue. */
159 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
162 case FTS_SL: /* Ignore. */
165 * The only symlinks that end up here are ones that
166 * don't point to anything and ones that we found
167 * doing a physical walk.
176 if ((uid == -1 || uid == p->fts_statp->st_uid) &&
177 (gid == -1 || gid == p->fts_statp->st_gid))
180 if (lchown(p->fts_accpath, uid, gid) && !fflag) {
181 chownerr(p->fts_path);
185 (void)printf("%s\n", p->fts_accpath);
188 if (chown(p->fts_accpath, uid, gid) && !fflag) {
189 chownerr(p->fts_path);
193 (void)printf("%s\n", p->fts_accpath);
208 if (*s == '\0') /* Argument was "uid[:.]". */
211 gid = ((gr = getgrnam(s)) == NULL) ? id(s, "group") : gr->gr_gid;
220 if (*s == '\0') /* Argument was "[:.]gid". */
222 uid = ((pw = getpwnam(s)) == NULL) ? id(s, "user") : pw->pw_uid;
234 * We know that uid_t's and gid_t's are unsigned longs.
237 val = strtoul(name, &ep, 10);
241 errx(1, "%s: illegal %s name", name, type);
249 static int euid = -1, ngroups = -1;
250 gid_t groups[NGROUPS];
252 /* Check for chown without being root. */
253 if (errno != EPERM ||
254 (uid != -1 && euid == -1 && (euid = geteuid()) != 0))
257 /* Check group membership; kernel just returns EPERM. */
258 if (gid != -1 && ngroups == -1 &&
259 euid == -1 && (euid = geteuid()) != 0) {
260 ngroups = getgroups(NGROUPS, groups);
261 while (--ngroups >= 0 && gid != groups[ngroups]);
263 errx(1, "you are not a member of group %s", gname);
271 (void)fprintf(stderr, "%s\n%s\n%s\n",
272 "usage: chown [-R [-H | -L | -P]] [-f] [-h] [-v] owner[:group] file ...",
273 " chown [-R [-H | -L | -P]] [-f] [-h] [-v] :group file ...",
274 " chgrp [-R [-H | -L | -P]] [-f] [-h] [-v] group file ...");