*
* 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.
*/
+//config:config CHOWN
+//config: bool "chown"
+//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-$(CONFIG_CHOWN) += chown.o
/* BB_AUDIT SUSv3 defects - none? */
-/* BB_AUDIT GNU defects - unsupported long options. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
+//usage:#define chown_trivial_usage
+//usage: "[-Rh"IF_DESKTOP("LHPcvf")"]... USER[:[GRP]] FILE..."
+//usage:#define chown_full_usage "\n\n"
+//usage: "Change the owner and/or group of each FILE to USER and/or GRP\n"
+//usage: "\n -R Recurse"
+//usage: "\n -h Affect symlinks instead of symlink targets"
+//usage: IF_DESKTOP(
+//usage: "\n -L Traverse all symlinks to directories"
+//usage: "\n -H Traverse symlinks on command line only"
+//usage: "\n -P Don't traverse symlinks (default)"
+//usage: "\n -c List changed files"
+//usage: "\n -v List all files"
+//usage: "\n -f Hide errors"
+//usage: )
+//usage:
+//usage:#define chown_example_usage
+//usage: "$ 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" USE_DESKTOP("vcfLHP"))
+#define OPT_STR ("Rh" IF_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))
+#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
* 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))
+#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 (USE_DESKTOP(option_mask32 & BIT_TRAVERSE_TOP) SKIP_DESKTOP(0))
+#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 struct bb_uidgid_t ugid = { -1, -1 };
+struct param_t {
+ struct bb_uidgid_t ugid;
+ chown_fptr chown_func;
+};
static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
- void *cf, int depth ATTRIBUTE_UNUSED)
+ void *vparam, int depth UNUSED_PARAM)
{
- 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;
+#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_fptr)cf)(fileName, u, g)) {
+ if (param.chown_func(fileName, u, g) == 0) {
if (OPT_VERBOSE
|| (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
) {
return TRUE;
}
if (!OPT_QUIET)
- bb_simple_perror_msg(fileName); /* A filename can have % in it... */
+ bb_simple_perror_msg(fileName);
return FALSE;
+#undef opt
+#undef param
}
-int chown_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int chown_main(int argc UNUSED_PARAM, char **argv)
{
int retval = EXIT_SUCCESS;
- int flags;
- chown_fptr chown_func;
+ int opt, flags;
+ struct param_t param;
+#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
+ applet_long_options = chown_longopts;
+#endif
opt_complementary = "-2";
- getopt32(argv, OPT_STR);
+ opt = getopt32(argv, OPT_STR);
argv += optind;
/* This matches coreutils behavior (almost - see below) */
- chown_func = chown;
+ param.chown_func = chown;
if (OPT_NODEREF
- /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
- USE_DESKTOP( || (option_mask32 & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
+ /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
+ IF_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
) {
- chown_func = lchown;
+ param.chown_func = lchown;
}
flags = ACTION_DEPTHFIRST; /* match coreutils order */
if (OPT_TRAVERSE)
flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
- parse_chown_usergroup_or_die(&ugid, argv[0]);
+ parse_chown_usergroup_or_die(¶m.ugid, argv[0]);
/* Ok, ready to do the deed now */
- argv++;
- do {
+ while (*++argv) {
if (!recursive_action(*argv,
flags, /* flags */
fileAction, /* file action */
fileAction, /* dir action */
- chown_func, /* user data */
+ ¶m, /* user data */
0) /* depth */
) {
retval = EXIT_FAILURE;
}
- } while (*++argv);
+ }
return retval;
}
projects / oweals / busybox.git / blobdiff