1 /* vi: set sw=4 ts=4: */
3 * Mini chown/chmod/chgrp implementation for busybox
6 * Copyright (C) 1999,2000 by Lineo, inc.
7 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #define BB_DECLARE_EXTERN
27 #define bb_need_invalid_option
28 #define bb_need_too_few_args
36 static unsigned long uid = -1;
37 static unsigned long gid = -1;
39 static char *invocationName = NULL;
40 static char *theMode = NULL;
47 static const char chgrp_usage[] = "chgrp [OPTION]... GROUP FILE...\n"
48 #ifndef BB_FEATURE_TRIVIAL_HELP
49 "\nChange the group membership of each FILE to GROUP.\n"
50 "\nOptions:\n\t-R\tChanges files and directories recursively.\n"
53 static const char chown_usage[] =
54 "chown [OPTION]... OWNER[<.|:>[GROUP] FILE...\n"
55 #ifndef BB_FEATURE_TRIVIAL_HELP
56 "\nChange the owner and/or group of each FILE to OWNER and/or GROUP.\n"
57 "\nOptions:\n\t-R\tChanges files and directories recursively.\n"
60 static const char chmod_usage[] =
61 "chmod [-R] MODE[,MODE]... FILE...\n"
62 #ifndef BB_FEATURE_TRIVIAL_HELP
63 "\nEach MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
64 "one or more of the letters rwxst.\n\n"
65 "\nOptions:\n\t-R\tChanges files and directories recursively.\n"
70 static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
75 #if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
77 (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
78 (gid == -1) ? statbuf->st_gid : gid) == 0)
81 (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
82 (gid == -1) ? statbuf->st_gid : gid) == 0)
89 /* Parse the specified modes */
90 if (parse_mode(theMode, &(statbuf->st_mode)) == FALSE) {
91 fatalError( "%s: unknown mode: %s\n", invocationName, theMode);
93 if (chmod(fileName, statbuf->st_mode) == 0)
101 int chmod_chown_chgrp_main(int argc, char **argv)
103 int recursiveFlag = FALSE;
106 const char *appUsage;
108 whichApp = (strcmp(*argv, "chown") == 0)?
109 CHOWN_APP : (strcmp(*argv, "chmod") == 0)?
110 CHMOD_APP : CHGRP_APP;
112 appUsage = (whichApp == CHOWN_APP)?
113 chown_usage : (whichApp == CHMOD_APP) ? chmod_usage : chgrp_usage;
117 invocationName = *argv;
121 while (--argc >= 0 && *argv && (**argv == '-')) {
125 recursiveFlag = TRUE;
128 fprintf(stderr, invalid_option, invocationName, **argv);
135 if (argc == 0 || *argv == NULL) {
136 fprintf(stderr, too_few_args, invocationName);
140 if (whichApp == CHMOD_APP) {
144 /* Find the selected group */
145 if (whichApp == CHGRP_APP) {
147 gid = strtoul(groupName, &p, 10); /* maybe it's already numeric */
149 gid = my_getgrnam(groupName);
153 groupName = strchr(*argv, '.');
154 if (groupName == NULL)
155 groupName = strchr(*argv, ':');
158 gid = strtoul(groupName, &p, 10);
160 gid = my_getgrnam(groupName);
168 /* Find the selected user (if appropriate) */
169 if (whichApp == CHOWN_APP) {
170 uid = strtoul(*argv, &p, 10); /* if numeric ... */
172 uid = my_getpwnam(*argv);
174 fatalError( "%s: unknown user name: %s\n",
175 invocationName, *argv);
180 /* Ok, ready to do the deed now */
182 fatalError( "%s: too few arguments\n", invocationName);
185 if (recursiveAction (*(++argv), recursiveFlag, FALSE, FALSE,
186 fileAction, fileAction, NULL) == FALSE)
192 fatalError( "%s: unknown group name: %s\n", invocationName, groupName);
197 c-file-style: "linux"