+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1988 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)chown.c 5.18 (Berkeley) 3/9/91";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+#include <dirent.h>
+#include <fts.h>
+#include <pwd.h>
+#include <grp.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+int ischown, uid, gid, fflag, rflag, retval;
+char *gname, *myname;
+
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ extern int optind;
+ register FTS *fts;
+ register FTSENT *p;
+ register char *cp;
+ int ch;
+
+ myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv;
+ ischown = myname[2] == 'o';
+
+ while ((ch = getopt(argc, argv, "Rf")) != EOF)
+ switch((char)ch) {
+ case 'R':
+ rflag = 1;
+ break;
+ case 'f':
+ fflag = 1;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ argv += optind;
+ argc -= optind;
+
+ if (argc < 2)
+ usage();
+
+ uid = gid = -1;
+ if (ischown) {
+#ifdef SUPPORT_DOT
+ if (cp = index(*argv, '.')) {
+ *cp++ = '\0';
+ a_gid(cp);
+ } else
+#endif
+ if (cp = index(*argv, ':')) {
+ *cp++ = '\0';
+ a_gid(cp);
+ }
+ a_uid(*argv);
+ }
+ else
+ a_gid(*argv);
+
+ if (rflag) {
+ if (!(fts = fts_open(++argv, FTS_NOSTAT|FTS_PHYSICAL, 0))) {
+ (void)fprintf(stderr,
+ "%s: %s.\n", myname, strerror(errno));
+ exit(1);
+ }
+ while (p = fts_read(fts)) {
+ if (p->fts_info == FTS_D)
+ continue;
+ if (p->fts_info == FTS_ERR) {
+ error(p->fts_path);
+ continue;
+ }
+ if (chown(p->fts_accpath, uid, gid) && !fflag)
+ chownerr(p->fts_path);
+ }
+ exit(retval);
+ }
+ while (*++argv)
+ if (chown(*argv, uid, gid) && !fflag)
+ chownerr(*argv);
+ exit(retval);
+}
+
+a_gid(s)
+ register char *s;
+{
+ struct group *gr;
+
+ if (!*s) {
+ gid = -1; /* argument was "uid." */
+ return;
+ }
+ gname = s;
+ if (gr = getgrnam(s))
+ gid = gr->gr_gid;
+ else {
+ for (; *s && isdigit(*s); ++s);
+ if (!*s)
+ gid = atoi(gname);
+ else {
+ (void)fprintf(stderr, "%s: unknown group id: %s\n",
+ myname, gname);
+ exit(1);
+ }
+ }
+}
+
+a_uid(s)
+ register char *s;
+{
+ struct passwd *pw;
+ char *uname;
+
+ if (!*s) {
+ uid = -1; /* argument was ".gid" */
+ return;
+ }
+ if (pw = getpwnam(s))
+ uid = pw->pw_uid;
+ else {
+ for (uname = s; *s && isdigit(*s); ++s);
+ if (!*s)
+ uid = atoi(uname);
+ else {
+ (void)fprintf(stderr,
+ "chown: unknown user id: %s\n", uname);
+ exit(1);
+ }
+ }
+}
+
+chownerr(file)
+ char *file;
+{
+ static int euid = -1, ngroups = -1;
+
+ /* check for chown without being root */
+ if (errno != EPERM || uid != -1 && euid == -1 && (euid = geteuid())) {
+ if (fflag)
+ exit(0);
+ error(file);
+ exit(1);
+ }
+ /* check group membership; kernel just returns EPERM */
+ if (gid != -1 && ngroups == -1) {
+ int groups[NGROUPS];
+
+ ngroups = getgroups(NGROUPS, groups);
+ while (--ngroups >= 0 && gid != groups[ngroups]);
+ if (ngroups < 0) {
+ if (fflag)
+ exit(0);
+ (void)fprintf(stderr,
+ "%s: you are not a member of group %s.\n",
+ myname, gname);
+ exit(1);
+ }
+ }
+ if (!fflag)
+ error(file);
+}
+
+error(name)
+ char *name;
+{
+ (void)fprintf(stderr, "%s: %s: %s\n", myname, name, strerror(errno));
+ retval = 1;
+}
+
+usage()
+{
+ (void)fprintf(stderr, "usage: %s [-Rf] %s file ...\n", myname,
+ ischown ? "[owner][:group]" : "group");
+ exit(1);
+}
projects / unix-history / commitdiff