*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
-/* BB_AUDIT GNU defects - unsupported long options. */
+/* BB_AUDIT SUSv3 defects - none? */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
-#include "busybox.h"
+//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 struct bb_uidgid_t ugid = { -1, -1 };
+#include "libbb.h"
-static int (*chown_func)(const char *, uid_t, gid_t) = chown;
+/* This is a NOEXEC applet. Be very careful! */
-#define OPT_RECURSE (option_mask32 & 1)
-#define OPT_NODEREF (option_mask32 & 2)
-#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))
-#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))
-#define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))
-#define OPT_STR ("Rh" USE_DESKTOP("vcf"))
-/* TODO:
- * -H if a command line argument is a symbolic link to a directory, traverse it
+#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
+
+typedef int (*chown_fptr)(const char *, uid_t, gid_t);
-static int fileAction(const char *fileName, struct stat *statbuf,
- void ATTRIBUTE_UNUSED *junk, int depth)
+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)
{
- // TODO: -H/-L/-P
- // if (depth ... && S_ISLNK(statbuf->st_mode)) ....
+#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 (!chown_func(fileName,
- (ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid,
- (ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid)
- ) {
+ if (param.chown_func(fileName, u, g) == 0) {
if (OPT_VERBOSE
- || (OPT_CHANGED && (statbuf->st_uid != ugid.uid || statbuf->st_gid != ugid.gid))
+ || (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
) {
printf("changed ownership of '%s' to %u:%u\n",
- fileName, ugid.uid, ugid.gid);
+ fileName, (unsigned)u, (unsigned)g);
}
return TRUE;
}
if (!OPT_QUIET)
- bb_perror_msg("%s", fileName); /* A filename can have % in it... */
+ 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)
{
- char *groupName;
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";
- getopt32(argc, argv, OPT_STR);
+ opt = getopt32(argv, OPT_STR);
argv += optind;
- if (OPT_NODEREF) chown_func = lchown;
-
- /* First, check if there is a group name here */
- groupName = strchr(*argv, '.'); /* deprecated? */
- if (!groupName)
- groupName = strchr(*argv, ':');
- else
- *groupName = ':'; /* replace '.' with ':' */
-
- /* First, try parsing "user[:[group]]" */
- if (!groupName) { /* "user" */
- ugid.uid = get_ug_id(*argv, xuname2uid);
- } else if (groupName == *argv) { /* ":group" */
- ugid.gid = get_ug_id(groupName + 1, xgroup2gid);
- } else {
- if (!groupName[1]) /* "user:" */
- *groupName = '\0';
- if (!get_uidgid(&ugid, *argv, 1))
- bb_error_msg_and_die("unknown user/group %s", *argv);
+ /* 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;
}
+ 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 */
- argv++;
- do {
+ while (*++argv) {
if (!recursive_action(*argv,
- OPT_RECURSE, // recurse
- FALSE, // follow links: TODO: -H/-L/-P
- FALSE, // depth first
- fileAction, // file action
- fileAction, // dir action
- NULL, // user data
- 0) // depth
+ flags, /* flags */
+ fileAction, /* file action */
+ fileAction, /* dir action */
+ ¶m, /* user data */
+ 0) /* depth */
) {
retval = EXIT_FAILURE;
}
- } while (*++argv);
+ }
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 / oweals / busybox.git / blobdiff