689d0650ab
function old new delta recursive_action1 - 316 +316 file_action_grep 161 164 +3 add_to_prg_cache_if_socket 202 205 +3 depmod_main 509 511 +2 writeFileToTarball 488 489 +1 parse_module 281 282 +1 fileAction 207 208 +1 act 189 190 +1 add_to_dirlist 65 64 -1 writeTarFile 196 194 -2 uuidcache_init 47 45 -2 uuidcache_check_device 109 107 -2 true_action 8 6 -2 run_parts_main 310 308 -2 netstat_main 534 532 -2 lsusb_main 29 27 -2 lspci_main 45 43 -2 initial_scan 138 136 -2 grep_main 845 843 -2 find_main 482 480 -2 config_file_action 437 435 -2 chmod_main 142 140 -2 dirAction 14 10 -4 diff_main 1544 1540 -4 chown_main 154 148 -6 skip_dir 136 129 -7 dir_act 191 184 -7 recursive_action 453 69 -384 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 7/20 up/down: 328/-439) Total: -111 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
232 lines
6.4 KiB
C
232 lines
6.4 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini chown implementation for busybox
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config CHOWN
|
|
//config: bool "chown (7.6 kb)"
|
|
//config: default y
|
|
//config: help
|
|
//config: chown is used to change the user and/or group ownership
|
|
//config: of files.
|
|
//config:
|
|
//config:config FEATURE_CHOWN_LONG_OPTIONS
|
|
//config: bool "Enable long options"
|
|
//config: default y
|
|
//config: depends on CHOWN && LONG_OPTS
|
|
|
|
//applet:IF_CHOWN(APPLET_NOEXEC(chown, chown, BB_DIR_BIN, BB_SUID_DROP, chown))
|
|
|
|
//kbuild:lib-$(CONFIG_CHOWN) += chown.o
|
|
|
|
/* BB_AUDIT SUSv3 defects - none? */
|
|
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
|
|
|
|
//usage:#define chown_trivial_usage
|
|
//usage: "[-Rh"IF_DESKTOP("LHPcvf")"]... USER[:[GRP]] FILE..."
|
|
//usage:#define chown_full_usage "\n\n"
|
|
//usage: "Change the owner and/or group of each FILE to USER and/or GRP\n"
|
|
//usage: "\n -R Recurse"
|
|
//usage: "\n -h Affect symlinks instead of symlink targets"
|
|
//usage: IF_DESKTOP(
|
|
//usage: "\n -L Traverse all symlinks to directories"
|
|
//usage: "\n -H Traverse symlinks on command line only"
|
|
//usage: "\n -P Don't traverse symlinks (default)"
|
|
//usage: "\n -c List changed files"
|
|
//usage: "\n -v List all files"
|
|
//usage: "\n -f Hide errors"
|
|
//usage: )
|
|
//usage:
|
|
//usage:#define chown_example_usage
|
|
//usage: "$ 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"
|
|
|
|
#include "libbb.h"
|
|
|
|
/* This is a NOEXEC applet. Be very careful! */
|
|
|
|
|
|
#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);
|
|
|
|
struct param_t {
|
|
struct bb_uidgid_t ugid;
|
|
chown_fptr chown_func;
|
|
};
|
|
|
|
static int FAST_FUNC fileAction(struct recursive_state *state UNUSED_PARAM,
|
|
const char *fileName, struct stat *statbuf)
|
|
{
|
|
#define param (*(struct param_t*)state->userData)
|
|
#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 UNUSED_PARAM, char **argv)
|
|
{
|
|
int retval = EXIT_SUCCESS;
|
|
int opt, flags;
|
|
struct param_t param;
|
|
|
|
#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
|
|
opt = getopt32long(argv, "^" OPT_STR "\0" "-2", chown_longopts);
|
|
#else
|
|
opt = getopt32(argv, "^" OPT_STR "\0" "-2");
|
|
#endif
|
|
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;
|
|
}
|
|
|
|
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 */
|
|
) {
|
|
retval = EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
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
|
|
|
|
*/
|