1 /* vi: set sw=4 ts=4: */
3 * Mini chown implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
10 /* BB_AUDIT SUSv3 defects - none? */
11 /* BB_AUDIT GNU defects - unsupported long options. */
12 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
16 /* This is a NOEXEC applet. Be very careful! */
19 #define OPT_STR ("Rh" USE_DESKTOP("vcfLHP"))
21 #define OPT_RECURSE (option_mask32 & 1)
22 #define OPT_NODEREF (option_mask32 & 2)
23 #define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 0x04) SKIP_DESKTOP(0))
24 #define OPT_CHANGED (USE_DESKTOP(option_mask32 & 0x08) SKIP_DESKTOP(0))
25 #define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))
27 * -L traverse every symbolic link to a directory encountered
28 * -H if a command line argument is a symbolic link to a directory, traverse it
29 * -P do not traverse any symbolic links (default)
30 * We do not conform to the following:
31 * "Specifying more than one of -H, -L, and -P is not an error.
32 * The last option specified shall determine the behavior of the utility." */
34 #define BIT_TRAVERSE 0x20
35 #define OPT_TRAVERSE (USE_DESKTOP(option_mask32 & BIT_TRAVERSE) SKIP_DESKTOP(0))
37 #define BIT_TRAVERSE_TOP (0x20|0x40)
38 #define OPT_TRAVERSE_TOP (USE_DESKTOP(option_mask32 & BIT_TRAVERSE_TOP) SKIP_DESKTOP(0))
40 typedef int (*chown_fptr)(const char *, uid_t, gid_t);
42 static struct bb_uidgid_t ugid = { -1, -1 };
44 static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
45 void *cf, int depth UNUSED_PARAM)
47 uid_t u = (ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid;
48 gid_t g = (ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid;
50 if (!((chown_fptr)cf)(fileName, u, g)) {
52 || (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
54 printf("changed ownership of '%s' to %u:%u\n",
55 fileName, (unsigned)u, (unsigned)g);
60 bb_simple_perror_msg(fileName); /* A filename can have % in it... */
64 int chown_main(int argc UNUSED_PARAM, char **argv)
66 int retval = EXIT_SUCCESS;
68 chown_fptr chown_func;
70 opt_complementary = "-2";
71 getopt32(argv, OPT_STR);
74 /* This matches coreutils behavior (almost - see below) */
77 /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
78 USE_DESKTOP( || (option_mask32 & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
83 flags = ACTION_DEPTHFIRST; /* match coreutils order */
85 flags |= ACTION_RECURSE;
87 flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */
89 flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
91 parse_chown_usergroup_or_die(&ugid, argv[0]);
93 /* Ok, ready to do the deed now */
96 if (!recursive_action(*argv,
98 fileAction, /* file action */
99 fileAction, /* dir action */
100 chown_func, /* user data */
103 retval = EXIT_FAILURE;
111 Testcase. Run in empty directory.
114 t1="/tmp/busybox chown"
127 ln -s ../up dir/linkup
128 ln -s ../dir2 dir/linkupdir2
135 echo "[$1]" >>test1.out
136 echo "[$1]" >>test2.out
137 (cd test1; $t1 $1) >>test1.out 2>&1
138 (cd test2; $t2 $1) >>test2.out 2>&1
139 (cd test1; ls -lnR) >out1
140 (cd test2; ls -lnR) >out2
141 echo "chown $1" >out.diff
142 if ! diff -u out1 out2 >>out.diff; then exit 1; fi
149 tst "$1 1:1 linkfile"
151 echo "If script produced 'out.diff' file, then at least one testcase failed"
154 # These match coreutils 6.8:
165 # Fix `name' in coreutils output
166 sed 's/`/'"'"'/g' -i test2.out
167 # Compare us with coreutils output
168 diff -u test1.out test2.out