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 source tree.
10 /* BB_AUDIT SUSv3 defects - none? */
11 /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
15 /* This is a NOEXEC applet. Be very careful! */
18 #define OPT_STR ("Rh" IF_DESKTOP("vcfLHP"))
20 #define OPT_RECURSE (opt & 1)
21 #define OPT_NODEREF (opt & 2)
22 #define OPT_VERBOSE (IF_DESKTOP(opt & 0x04) IF_NOT_DESKTOP(0))
23 #define OPT_CHANGED (IF_DESKTOP(opt & 0x08) IF_NOT_DESKTOP(0))
24 #define OPT_QUIET (IF_DESKTOP(opt & 0x10) IF_NOT_DESKTOP(0))
26 * -L traverse every symbolic link to a directory encountered
27 * -H if a command line argument is a symbolic link to a directory, traverse it
28 * -P do not traverse any symbolic links (default)
29 * We do not conform to the following:
30 * "Specifying more than one of -H, -L, and -P is not an error.
31 * The last option specified shall determine the behavior of the utility." */
33 #define BIT_TRAVERSE 0x20
34 #define OPT_TRAVERSE (IF_DESKTOP(opt & BIT_TRAVERSE) IF_NOT_DESKTOP(0))
36 #define BIT_TRAVERSE_TOP (0x20|0x40)
37 #define OPT_TRAVERSE_TOP (IF_DESKTOP(opt & BIT_TRAVERSE_TOP) IF_NOT_DESKTOP(0))
39 #if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
40 static const char chown_longopts[] ALIGN1 =
41 "recursive\0" No_argument "R"
42 "dereference\0" No_argument "\xff"
43 "no-dereference\0" No_argument "h"
45 "changes\0" No_argument "c"
46 "silent\0" No_argument "f"
47 "quiet\0" No_argument "f"
48 "verbose\0" No_argument "v"
53 typedef int (*chown_fptr)(const char *, uid_t, gid_t);
56 struct bb_uidgid_t ugid;
57 chown_fptr chown_func;
60 static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
61 void *vparam, int depth UNUSED_PARAM)
63 #define param (*(struct param_t*)vparam)
64 #define opt option_mask32
65 uid_t u = (param.ugid.uid == (uid_t)-1L) ? statbuf->st_uid : param.ugid.uid;
66 gid_t g = (param.ugid.gid == (gid_t)-1L) ? statbuf->st_gid : param.ugid.gid;
68 if (param.chown_func(fileName, u, g) == 0) {
70 || (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
72 printf("changed ownership of '%s' to %u:%u\n",
73 fileName, (unsigned)u, (unsigned)g);
78 bb_simple_perror_msg(fileName);
84 int chown_main(int argc UNUSED_PARAM, char **argv)
86 int retval = EXIT_SUCCESS;
90 /* Just -1 might not work: uid_t may be unsigned long */
94 #if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
95 applet_long_options = chown_longopts;
97 opt_complementary = "-2";
98 opt = getopt32(argv, OPT_STR);
101 /* This matches coreutils behavior (almost - see below) */
102 param.chown_func = chown;
104 /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
105 IF_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
107 param.chown_func = lchown;
110 flags = ACTION_DEPTHFIRST; /* match coreutils order */
112 flags |= ACTION_RECURSE;
113 if (OPT_TRAVERSE_TOP)
114 flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */
116 flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
118 parse_chown_usergroup_or_die(¶m.ugid, argv[0]);
120 /* Ok, ready to do the deed now */
122 if (!recursive_action(*argv,
124 fileAction, /* file action */
125 fileAction, /* dir action */
126 ¶m, /* user data */
129 retval = EXIT_FAILURE;
137 Testcase. Run in empty directory.
140 t1="/tmp/busybox chown"
153 ln -s ../up dir/linkup
154 ln -s ../dir2 dir/linkupdir2
161 echo "[$1]" >>test1.out
162 echo "[$1]" >>test2.out
163 (cd test1; $t1 $1) >>test1.out 2>&1
164 (cd test2; $t2 $1) >>test2.out 2>&1
165 (cd test1; ls -lnR) >out1
166 (cd test2; ls -lnR) >out2
167 echo "chown $1" >out.diff
168 if ! diff -u out1 out2 >>out.diff; then exit 1; fi
175 tst "$1 1:1 linkfile"
177 echo "If script produced 'out.diff' file, then at least one testcase failed"
180 # These match coreutils 6.8:
191 # Fix `name' in coreutils output
192 sed 's/`/'"'"'/g' -i test2.out
193 # Compare us with coreutils output
194 diff -u test1.out test2.out