+/* vi: set sw=4 ts=4: */
/*
- * Mini chown/chgrp implementation for busybox
+ * Mini chown implementation for busybox
*
- * Copyright (C) 1998 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 source tree.
*/
-#include <stdio.h>
-#include <grp.h>
-#include <pwd.h>
-#include "internal.h"
+/* BB_AUDIT SUSv3 defects - none? */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
+//usage:#define chown_trivial_usage
+//usage: "[-RhLHP"IF_DESKTOP("cvf")"]... OWNER[<.|:>[GROUP]] FILE..."
+//usage:#define chown_full_usage "\n\n"
+//usage: "Change the owner and/or group of each FILE to OWNER and/or GROUP\n"
+//usage: "\n -R Recurse"
+//usage: "\n -h Affect symlinks instead of symlink targets"
+//usage: "\n -L Traverse all symlinks to directories"
+//usage: "\n -H Traverse symlinks on command line only"
+//usage: "\n -P Don't traverse symlinks (default)"
+//usage: IF_DESKTOP(
+//usage: "\n -c List changed files"
+//usage: "\n -v List all files"
+//usage: "\n -f Hide errors"
+//usage: )
+//usage:
+//usage:#define chown_example_usage
+//usage: "$ ls -l /tmp/foo\n"
+//usage: "-r--r--r-- 1 andersen andersen 0 Apr 12 18:25 /tmp/foo\n"
+//usage: "$ chown root /tmp/foo\n"
+//usage: "$ ls -l /tmp/foo\n"
+//usage: "-r--r--r-- 1 root andersen 0 Apr 12 18:25 /tmp/foo\n"
+//usage: "$ chown root.root /tmp/foo\n"
+//usage: "ls -l /tmp/foo\n"
+//usage: "-r--r--r-- 1 root root 0 Apr 12 18:25 /tmp/foo\n"
-static int uid=-1;
-static int gid=0;
-static int chownApp;
-static char* invocationName=NULL;
+#include "libbb.h"
+/* This is a NOEXEC applet. Be very careful! */
-static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
- "Change the group membership of each FILE to GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
- "Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
+#define OPT_STR ("Rh" IF_DESKTOP("vcfLHP"))
+#define BIT_RECURSE 1
+#define OPT_RECURSE (opt & 1)
+#define OPT_NODEREF (opt & 2)
+#define OPT_VERBOSE (IF_DESKTOP(opt & 0x04) IF_NOT_DESKTOP(0))
+#define OPT_CHANGED (IF_DESKTOP(opt & 0x08) IF_NOT_DESKTOP(0))
+#define OPT_QUIET (IF_DESKTOP(opt & 0x10) IF_NOT_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 (IF_DESKTOP(opt & BIT_TRAVERSE) IF_NOT_DESKTOP(0))
+/* -H or -L */
+#define BIT_TRAVERSE_TOP (0x20|0x40)
+#define OPT_TRAVERSE_TOP (IF_DESKTOP(opt & BIT_TRAVERSE_TOP) IF_NOT_DESKTOP(0))
+#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
+static const char chown_longopts[] ALIGN1 =
+ "recursive\0" No_argument "R"
+ "dereference\0" No_argument "\xff"
+ "no-dereference\0" No_argument "h"
+# if ENABLE_DESKTOP
+ "changes\0" No_argument "c"
+ "silent\0" No_argument "f"
+ "quiet\0" No_argument "f"
+ "verbose\0" No_argument "v"
+# endif
+ ;
+#endif
-static int fileAction(const char *fileName)
+typedef int (*chown_fptr)(const char *, uid_t, gid_t);
+
+struct param_t {
+ struct bb_uidgid_t ugid;
+ chown_fptr chown_func;
+};
+
+static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
+ void *vparam, int depth UNUSED_PARAM)
{
- struct stat statBuf;
- if ((stat(fileName, &statBuf) < 0) ||
- (chown(fileName,
- ((chownApp==TRUE)? uid: statBuf.st_uid),
- gid) < 0)) {
- perror(fileName);
- return( TRUE);
- }
- return( FALSE);
+#define param (*(struct param_t*)vparam)
+#define opt option_mask32
+ uid_t u = (param.ugid.uid == (uid_t)-1L) ? statbuf->st_uid : param.ugid.uid;
+ gid_t g = (param.ugid.gid == (gid_t)-1L) ? statbuf->st_gid : param.ugid.gid;
+
+ if (param.chown_func(fileName, u, g) == 0) {
+ 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;
+ }
+ if (!OPT_QUIET)
+ bb_simple_perror_msg(fileName);
+ return FALSE;
+#undef opt
+#undef param
}
-int chown_main(int argc, char **argv)
+int chown_main(int argc UNUSED_PARAM, char **argv)
{
- struct group *grp;
- struct passwd *pwd;
- int recursiveFlag=FALSE;
- char *groupName;
-
-
- chownApp = (strcmp(*argv, "chown")==0)? TRUE : FALSE;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s %s", *argv,
- (chownApp==TRUE)? chown_usage : chgrp_usage);
- exit( FALSE);
- }
- invocationName=*argv;
- argc--;
- argv++;
-
- /* Parse options */
- while (**argv == '-') {
- while (*++(*argv)) switch (**argv) {
- case 'R':
- recursiveFlag = TRUE;
- break;
- default:
- fprintf(stderr, "Unknown option: %c\n", **argv);
- exit( FALSE);
+ int retval = EXIT_SUCCESS;
+ int opt, flags;
+ struct param_t param;
+
+ /* Just -1 might not work: uid_t may be unsigned long */
+ param.ugid.uid = -1L;
+ param.ugid.gid = -1L;
+
+#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
+ applet_long_options = chown_longopts;
+#endif
+ opt_complementary = "-2";
+ opt = getopt32(argv, OPT_STR);
+ argv += optind;
+
+ /* This matches coreutils behavior (almost - see below) */
+ param.chown_func = chown;
+ if (OPT_NODEREF
+ /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
+ IF_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
+ ) {
+ param.chown_func = lchown;
}
- argc--;
- argv++;
- }
-
- /* Find the selected group */
- groupName = strchr(*argv, '.');
- if ( chownApp==TRUE && groupName )
- *groupName++ = '\0';
- else
- groupName = *argv;
- grp = getgrnam(groupName);
- if (grp == NULL) {
- fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
- exit( FALSE);
- }
- gid = grp->gr_gid;
-
- /* Find the selected user (if appropriate) */
- if (chownApp==TRUE) {
- pwd = getpwnam(*argv);
- if (pwd == NULL) {
- fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
- exit( FALSE);
+
+ flags = ACTION_DEPTHFIRST; /* match coreutils order */
+ if (OPT_RECURSE)
+ flags |= ACTION_RECURSE;
+ if (OPT_TRAVERSE_TOP)
+ flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */
+ if (OPT_TRAVERSE)
+ flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
+
+ parse_chown_usergroup_or_die(¶m.ugid, argv[0]);
+
+ /* Ok, ready to do the deed now */
+ while (*++argv) {
+ if (!recursive_action(*argv,
+ flags, /* flags */
+ fileAction, /* file action */
+ fileAction, /* dir action */
+ ¶m, /* user data */
+ 0) /* depth */
+ ) {
+ retval = EXIT_FAILURE;
+ }
}
- uid = pwd->pw_uid;
- }
-
- /* Ok, ready to do the deed now */
- if (argc <= 1) {
- fprintf(stderr, "%s: too few arguments", invocationName);
- exit( FALSE);
- }
- while (argc-- > 1) {
- argv++;
- recursiveAction( *argv, recursiveFlag, TRUE, fileAction, fileAction);
- }
- exit(TRUE);
+
+ return retval;
+}
+
+/*
+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
+ echo "[$1]" >>test1.out
+ echo "[$1]" >>test2.out
+ (cd test1; $t1 $1) >>test1.out 2>&1
+ (cd test2; $t2 $1) >>test2.out 2>&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"
+>test1.out
+>test2.out
+# These match coreutils 6.8:
+tst_for_each "-v"
+tst_for_each "-vR"
+tst_for_each "-vRP"
+tst_for_each "-vRL"
+tst_for_each "-vRH"
+tst_for_each "-vh"
+tst_for_each "-vhR"
+tst_for_each "-vhRP"
+tst_for_each "-vhRL"
+tst_for_each "-vhRH"
+# Fix `name' in coreutils output
+sed 's/`/'"'"'/g' -i test2.out
+# Compare us with coreutils output
+diff -u test1.out test2.out
+
+*/
projects / platform / upstream / busybox.git / blobdiff