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|
/* vi: set sw=4 ts=4: */
/*
* Mini chown/chmod/chgrp implementation for busybox
*
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "busybox.h"
#define BB_DECLARE_EXTERN
#define bb_need_invalid_option
#define bb_need_too_few_args
#include "messages.c"
static long uid = -1;
static long gid = -1;
static int whichApp;
static char *theMode = NULL;
#define CHGRP_APP 1
#define CHOWN_APP 2
#define CHMOD_APP 3
static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
switch (whichApp) {
case CHGRP_APP:
case CHOWN_APP:
#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
if (lchown
(fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
(gid == -1) ? statbuf->st_gid : gid) == 0)
#else
if (chown
(fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
(gid == -1) ? statbuf->st_gid : gid) == 0)
#endif
{
return (TRUE);
}
break;
case CHMOD_APP:
/* Parse the specified modes */
if (parse_mode(theMode, &(statbuf->st_mode)) == FALSE) {
error_msg_and_die( "unknown mode: %s", theMode);
}
if (chmod(fileName, statbuf->st_mode) == 0)
return (TRUE);
break;
}
perror(fileName);
return (FALSE);
}
int chmod_chown_chgrp_main(int argc, char **argv)
{
int stopIt = FALSE;
int recursiveFlag = FALSE;
char *groupName=NULL;
char *p=NULL;
whichApp = (applet_name[2]=='o')? /* chown */
CHOWN_APP : (applet_name[2]=='m')? /* chmod */
CHMOD_APP : CHGRP_APP;
if (argc < 2)
show_usage();
argv++;
/* Parse options */
while (--argc >= 0 && *argv && (**argv == '-')) {
while (stopIt==FALSE && *++(*argv)) {
switch (**argv) {
case 'R':
recursiveFlag = TRUE;
break;
default:
theMode=*argv-1;
stopIt = TRUE;
}
}
if (stopIt==TRUE)
break;
argv++;
}
if (argc == 0 || *argv == NULL) {
error_msg(too_few_args);
}
if (whichApp == CHMOD_APP) {
if (theMode==NULL)
theMode = *argv;
} else {
/* Find the selected group */
if (whichApp == CHGRP_APP) {
groupName = *argv;
gid = strtoul(groupName, &p, 10); /* maybe it's already numeric */
if (groupName == p)
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else {
groupName = strchr(*argv, '.');
if (groupName == NULL)
groupName = strchr(*argv, ':');
if (groupName) {
*groupName++ = '\0';
gid = strtoul(groupName, &p, 10);
if (groupName == p)
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else
gid = -1;
}
/* Find the selected user (if appropriate) */
if (whichApp == CHOWN_APP) {
uid = strtoul(*argv, &p, 10); /* if numeric ... */
if (*argv == p)
uid = my_getpwnam(*argv);
if (uid == -1) {
error_msg_and_die( "unknown user name: %s", *argv);
}
}
}
/* Ok, ready to do the deed now */
if (argc < 1) {
error_msg_and_die(too_few_args);
}
while (argc-- > 1) {
if (recursive_action (*(++argv), recursiveFlag, FALSE, FALSE,
fileAction, fileAction, NULL) == FALSE)
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
bad_group:
error_msg_and_die( "unknown group name: %s", groupName);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
