/*
* Mini chown implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+/* BB_AUDIT SUSv3 defects - none? */
+/* BB_AUDIT GNU defects - unsupported long options. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
+
#include "busybox.h"
-/* Don't use lchown for libc5 or glibc older then 2.1.x */
-#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1)
-#define lchown chown
-#endif
+#define OPT_STR ("Rh" USE_DESKTOP("vcfLHP"))
+#define BIT_RECURSE 1
+#define OPT_RECURSE (option_mask32 & 1)
+#define OPT_NODEREF (option_mask32 & 2)
+#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 0x04) SKIP_DESKTOP(0))
+#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 0x08) SKIP_DESKTOP(0))
+#define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))
+/* POSIX options
+ * -L traverse every symbolic link to a directory encountered
+ * -H if a command line argument is a symbolic link to a directory, traverse it
+ * -P do not traverse any symbolic links (default)
+ * We do not conform to the following:
+ * "Specifying more than one of -H, -L, and -P is not an error.
+ * The last option specified shall determine the behavior of the utility." */
+/* -L */
+#define BIT_TRAVERSE 0x20
+#define OPT_TRAVERSE (USE_DESKTOP(option_mask32 & BIT_TRAVERSE) SKIP_DESKTOP(0))
+/* -H or -L */
+#define BIT_TRAVERSE_TOP (0x20|0x40)
+#define OPT_TRAVERSE_TOP (USE_DESKTOP(option_mask32 & BIT_TRAVERSE_TOP) SKIP_DESKTOP(0))
-static long uid;
-static long gid;
+typedef int (*chown_fptr)(const char *, uid_t, gid_t);
-static int (*chown_func)(const char *, uid_t, gid_t) = chown;
+static struct bb_uidgid_t ugid = { -1, -1 };
-static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
+static int fileAction(const char *fileName, struct stat *statbuf,
+ void *cf, int depth)
{
- if (chown_func(fileName, uid, (gid == -1) ? statbuf->st_gid : gid) == 0) {
- return (TRUE);
+ uid_t u = (ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid;
+ gid_t g = (ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid;
+
+ if (!((chown_fptr)cf)(fileName, u, g)) {
+ if (OPT_VERBOSE
+ || (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
+ ) {
+ printf("changed ownership of '%s' to %u:%u\n",
+ fileName, (unsigned)u, (unsigned)g);
+ }
+ return TRUE;
}
- perror(fileName);
- return (FALSE);
+ if (!OPT_QUIET)
+ bb_perror_msg("%s", fileName); /* A filename can have % in it... */
+ return FALSE;
}
+int chown_main(int argc, char **argv);
int chown_main(int argc, char **argv)
{
- int opt;
- int recursiveFlag = FALSE,
- noderefFlag = FALSE;
- char *groupName=NULL;
- char *p=NULL;
-
- /* do normal option parsing */
- while ((opt = getopt(argc, argv, "Rh")) > 0) {
- switch (opt) {
- case 'R':
- recursiveFlag = TRUE;
- break;
- case 'h':
- noderefFlag = TRUE;
- break;
- default:
- show_usage();
- }
- }
+ int retval = EXIT_SUCCESS;
+ chown_fptr chown_func;
- if (noderefFlag) chown_func = lchown;
-
- if (argc > optind && argc > 2 && argv[optind]) {
- /* First, check if there is a group name here */
- groupName = strchr(argv[optind], '.');
- if (groupName == NULL)
- groupName = strchr(argv[optind], ':');
- if (groupName) {
- *groupName++ = '\0';
- gid = strtoul(groupName, &p, 10);
- if (groupName == p)
- gid = my_getgrnam(groupName);
- } else {
- gid = -1;
- }
- /* Now check for the username */
- uid = strtoul(argv[optind], &p, 10); /* Is is numeric? */
- if (argv[optind] == p) {
- uid = my_getpwnam(argv[optind]);
- }
- } else {
- error_msg_and_die(too_few_args);
+ opt_complementary = "-2";
+ getopt32(argc, argv, OPT_STR);
+ argv += optind;
+
+ /* This matches coreutils behavior (almost - see below) */
+ chown_func = chown;
+ if (OPT_NODEREF
+ /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
+ USE_DESKTOP( || (option_mask32 & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
+ ) {
+ chown_func = lchown;
}
+ parse_chown_usergroup_or_die(&ugid, argv[0]);
+
/* Ok, ready to do the deed now */
- while (++optind < argc) {
- if (! recursive_action (argv[optind], recursiveFlag, FALSE, FALSE,
- fileAction, fileAction, NULL)) {
- return EXIT_FAILURE;
+ argv++;
+ do {
+ char *arg = *argv;
+
+ if (OPT_TRAVERSE_TOP) {
+ /* resolves symlink (even recursive) */
+ arg = xmalloc_realpath(arg);
+ if (!arg)
+ continue;
}
- }
- return EXIT_SUCCESS;
+ if (!recursive_action(arg,
+ (OPT_RECURSE ? ACTION_RECURSE : 0) | /* recurse */
+ (OPT_TRAVERSE ? ACTION_FOLLOWLINKS : 0),/* follow links if -L */
+ fileAction, /* file action */
+ fileAction, /* dir action */
+ chown_func, /* user data */
+ 0) /* depth */
+ ) {
+ retval = EXIT_FAILURE;
+ }
+
+ if (OPT_TRAVERSE_TOP)
+ free(arg);
+ } while (*++argv);
+
+ return retval;
}
/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
+Testcase. Run in empty directory.
+
+#!/bin/sh
+t1="/tmp/busybox chown"
+t2="/usr/bin/chown"
+create() {
+ rm -rf $1; mkdir $1
+ (
+ cd $1 || exit 1
+ mkdir dir dir2
+ >up
+ >file
+ >dir/file
+ >dir2/file
+ ln -s dir linkdir
+ ln -s file linkfile
+ ln -s ../up dir/linkup
+ ln -s ../dir2 dir/linkupdir2
+ )
+ chown -R 0:0 $1
+}
+tst() {
+ create test1
+ create test2
+ (cd test1; $t1 $1)
+ (cd test2; $t2 $1)
+ (cd test1; ls -lnR) >out1
+ (cd test2; ls -lnR) >out2
+ echo "chown $1" >out.diff
+ if ! diff -u out1 out2 >>out.diff; then exit 1; fi
+ rm out.diff
+}
+tst_for_each() {
+ tst "$1 1:1 file"
+ tst "$1 1:1 dir"
+ tst "$1 1:1 linkdir"
+ tst "$1 1:1 linkfile"
+}
+echo "If script produced 'out.diff' file, then at least one testcase failed"
+# These match coreutils 6.8:
+tst_for_each ""
+tst_for_each "-R"
+tst_for_each "-RP"
+tst_for_each "-RL"
+tst_for_each "-RH"
+tst_for_each "-h"
+tst_for_each "-hR"
+tst_for_each "-hRP"
+# Below: with "chown linkdir" coreutils 6.8 will chown linkdir _target_,
+# we lchown _the link_. I believe we are "more correct".
+#tst_for_each "-hRL"
+#tst_for_each "-hRH"
+
*/
projects / oweals / busybox.git / blobdiff