d166f83d74
chown/chgrp: completely match coreutils 6.8 wrt symlink handling function old new delta recursive_action 411 422 +11 arith 2033 2042 +9 collect_blk 467 474 +7 dhcprelay_main 1122 1125 +3 fsck_main 1909 1911 +2 singlemount 4555 4547 -8 xmalloc_realpath 14 - -14 get_lcm 123 105 -18 ed_main 3111 3084 -27 chown_main 217 183 -34 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 5/4 up/down: 32/-101) Total: -69 bytes text data bss dec hex filename 684132 2744 14000 700876 ab1cc busybox_old 684060 2744 14000 700804 ab184 busybox_unstripped
172 lines
4.5 KiB
C
172 lines
4.5 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 tarball for details.
|
|
*/
|
|
|
|
/* BB_AUDIT SUSv3 defects - none? */
|
|
/* BB_AUDIT GNU defects - unsupported long options. */
|
|
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
|
|
|
|
#include "libbb.h"
|
|
|
|
/* This is a NOEXEC applet. Be very careful! */
|
|
|
|
|
|
#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))
|
|
|
|
typedef int (*chown_fptr)(const char *, uid_t, gid_t);
|
|
|
|
static struct bb_uidgid_t ugid = { -1, -1 };
|
|
|
|
static int fileAction(const char *fileName, struct stat *statbuf,
|
|
void *cf, int depth)
|
|
{
|
|
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;
|
|
}
|
|
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 retval = EXIT_SUCCESS;
|
|
int flags;
|
|
chown_fptr chown_func;
|
|
|
|
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;
|
|
}
|
|
|
|
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(&ugid, argv[0]);
|
|
|
|
/* Ok, ready to do the deed now */
|
|
argv++;
|
|
do {
|
|
if (!recursive_action(*argv,
|
|
flags, /* flags */
|
|
fileAction, /* file action */
|
|
fileAction, /* dir action */
|
|
chown_func, /* 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
|
|
|
|
*/
|