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 1.4 2003/11/15 23:33:35 eirikn Exp $
39 #include <sys/param.h>
56 void chownerr(char *);
57 u_long id(char *, char *);
62 int Rflag, ischown, fflag, hflag, vflag;
66 main(int argc, char **argv)
70 int Hflag, Lflag, Pflag, ch, fts_options, hflag, rval;
73 myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv;
74 ischown = myname[2] == 'o';
76 Hflag = Lflag = Pflag = hflag = vflag = 0;
77 while ((ch = getopt(argc, argv, "HLPRfhv")) != -1)
113 fts_options = FTS_PHYSICAL;
115 if (hflag && (Lflag || Hflag))
116 errx(1, "the -R and -h options may not be specified together");
118 fts_options |= FTS_COMFOLLOW;
120 fts_options &= ~FTS_PHYSICAL;
121 fts_options |= FTS_LOGICAL;
127 if ((cp = strchr(*argv, ':')) != NULL) {
132 else if ((cp = strchr(*argv, '.')) != NULL) {
133 warnx("separation of user and group with a period is deprecated");
142 if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
145 for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
146 switch (p->fts_info) {
147 case FTS_D: /* Change it at FTS_DP. */
149 fts_set(ftsp, p, FTS_SKIP);
151 case FTS_DNR: /* Warn, chown, continue. */
152 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
155 case FTS_ERR: /* Warn, continue. */
157 warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
160 case FTS_SL: /* Ignore. */
163 * The only symlinks that end up here are ones that
164 * don't point to anything and ones that we found
165 * doing a physical walk.
174 if ((uid == -1 || uid == p->fts_statp->st_uid) &&
175 (gid == -1 || gid == p->fts_statp->st_gid))
178 if (lchown(p->fts_accpath, uid, gid) && !fflag) {
179 chownerr(p->fts_path);
183 (void)printf("%s\n", p->fts_accpath);
186 if (chown(p->fts_accpath, uid, gid) && !fflag) {
187 chownerr(p->fts_path);
191 (void)printf("%s\n", p->fts_accpath);
205 if (*s == '\0') /* Argument was "uid[:.]". */
208 gid = ((gr = getgrnam(s)) == NULL) ? id(s, "group") : gr->gr_gid;
216 if (*s == '\0') /* Argument was "[:.]gid". */
218 uid = ((pw = getpwnam(s)) == NULL) ? id(s, "user") : pw->pw_uid;
222 id(char *name, char *type)
229 * We know that uid_t's and gid_t's are unsigned longs.
232 val = strtoul(name, &ep, 10);
236 errx(1, "%s: illegal %s name", name, type);
243 static int euid = -1, ngroups = -1;
244 gid_t groups[NGROUPS];
246 /* Check for chown without being root. */
247 if (errno != EPERM ||
248 (uid != -1 && euid == -1 && (euid = geteuid()) != 0))
251 /* Check group membership; kernel just returns EPERM. */
252 if (gid != -1 && ngroups == -1 &&
253 euid == -1 && (euid = geteuid()) != 0) {
254 ngroups = getgroups(NGROUPS, groups);
255 while (--ngroups >= 0 && gid != groups[ngroups]);
257 errx(1, "you are not a member of group %s", gname);
265 (void)fprintf(stderr, "%s\n%s\n%s\n",
266 "usage: chown [-R [-H | -L | -P]] [-f] [-h] [-v] owner[:group] file ...",
267 " chown [-R [-H | -L | -P]] [-f] [-h] [-v] :group file ...",
268 " chgrp [-R [-H | -L | -P]] [-f] [-h] [-v] group file ...");