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/* 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 - unsupported options -H, -L, and -P. */
/* BB_AUDIT GNU defects - unsupported long options. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
#include "busybox.h"
static struct bb_uidgid_t ugid = { -1, -1 };
static int (*chown_func)(const char *, uid_t, gid_t) = chown;
#define OPT_RECURSE (option_mask32 & 1)
#define OPT_NODEREF (option_mask32 & 2)
#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))
#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))
#define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))
#define OPT_STR ("Rh" USE_DESKTOP("vcf"))
/* TODO:
* -H if a command line argument is a symbolic link to a directory, traverse it
* -L traverse every symbolic link to a directory encountered
* -P do not traverse any symbolic links (default)
*/
static int fileAction(const char *fileName, struct stat *statbuf,
void ATTRIBUTE_UNUSED *junk, int depth)
{
// TODO: -H/-L/-P
// if (depth ... && S_ISLNK(statbuf->st_mode)) ....
if (!chown_func(fileName,
(ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid,
(ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid)
) {
if (OPT_VERBOSE
|| (OPT_CHANGED && (statbuf->st_uid != ugid.uid || statbuf->st_gid != ugid.gid))
) {
printf("changed ownership of '%s' to %u:%u\n",
fileName, ugid.uid, ugid.gid);
}
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)
{
char *groupName;
int retval = EXIT_SUCCESS;
opt_complementary = "-2";
getopt32(argc, argv, OPT_STR);
argv += optind;
if (OPT_NODEREF) chown_func = lchown;
/* First, check if there is a group name here */
groupName = strchr(*argv, '.'); /* deprecated? */
if (!groupName)
groupName = strchr(*argv, ':');
else
*groupName = ':'; /* replace '.' with ':' */
/* First, try parsing "user[:[group]]" */
if (!groupName) { /* "user" */
ugid.uid = get_ug_id(*argv, xuname2uid);
} else if (groupName == *argv) { /* ":group" */
ugid.gid = get_ug_id(groupName + 1, xgroup2gid);
} else {
if (!groupName[1]) /* "user:" */
*groupName = '\0';
if (!get_uidgid(&ugid, *argv, 1))
bb_error_msg_and_die("unknown user/group %s", *argv);
}
/* Ok, ready to do the deed now */
argv++;
do {
if (!recursive_action(*argv,
OPT_RECURSE, // recurse
FALSE, // follow links: TODO: -H/-L/-P
FALSE, // depth first
fileAction, // file action
fileAction, // dir action
NULL, // user data
0) // depth
) {
retval = EXIT_FAILURE;
}
} while (*++argv);
return retval;
}
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