156 lines
4.1 KiB
C
156 lines
4.1 KiB
C
/*
|
|
* Mini chown/chmod/chgrp implementation for busybox
|
|
*
|
|
*
|
|
* Copyright (C) 1999 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 <grp.h>
|
|
#include <pwd.h>
|
|
#include "internal.h"
|
|
|
|
|
|
static uid_t uid=-1;
|
|
static gid_t gid=-1;
|
|
static int whichApp;
|
|
static char* invocationName=NULL;
|
|
static mode_t mode=0644;
|
|
|
|
|
|
#define CHGRP_APP 1
|
|
#define CHOWN_APP 2
|
|
#define CHMOD_APP 3
|
|
|
|
static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
|
|
"Change the group membership of each FILE to GROUP.\n"
|
|
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
|
|
static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
|
|
"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
|
|
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
|
|
static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
|
|
"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
|
|
"one or more of the letters rwxst.\n\n"
|
|
"\t-R\tchange files and directories recursively.\n";
|
|
|
|
|
|
static int fileAction(const char *fileName, struct stat* statbuf)
|
|
{
|
|
switch (whichApp) {
|
|
case CHGRP_APP:
|
|
case CHOWN_APP:
|
|
if (chown(fileName, (whichApp==CHOWN_APP)? uid : statbuf->st_uid,
|
|
(gid==-1)? statbuf->st_gid : gid) == 0) {
|
|
return( TRUE);
|
|
}
|
|
break;
|
|
case CHMOD_APP:
|
|
if (chmod(fileName, mode) == 0)
|
|
return( TRUE);
|
|
break;
|
|
}
|
|
perror(fileName);
|
|
return( FALSE);
|
|
}
|
|
|
|
int chmod_chown_chgrp_main(int argc, char **argv)
|
|
{
|
|
int recursiveFlag=FALSE;
|
|
char *groupName;
|
|
|
|
whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
|
|
|
|
if (argc < 2) {
|
|
fprintf(stderr, "Usage: %s %s", *argv,
|
|
(whichApp==TRUE)? chown_usage : chgrp_usage);
|
|
exit( FALSE);
|
|
}
|
|
invocationName=*argv;
|
|
argc--;
|
|
argv++;
|
|
|
|
/* Parse options */
|
|
while (**argv == '-') {
|
|
while (*++(*argv)) switch (**argv) {
|
|
case 'R':
|
|
recursiveFlag = TRUE;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown option: %c\n", **argv);
|
|
exit( FALSE);
|
|
}
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if ( whichApp == CHMOD_APP ) {
|
|
/* Find the specified modes */
|
|
mode = ( 0 & (S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO));
|
|
if ( parse_mode(*argv, &mode) == FALSE ) {
|
|
fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
|
|
exit( FALSE);
|
|
}
|
|
} else {
|
|
|
|
/* Find the selected group */
|
|
if ( whichApp==CHGRP_APP ) {
|
|
groupName = *argv;
|
|
gid = my_getgrnam(groupName);
|
|
if (gid == -1)
|
|
goto bad_group;
|
|
} else {
|
|
groupName = strchr(*argv, '.');
|
|
if (groupName) {
|
|
*groupName++ = '\0';
|
|
gid = my_getgrnam(groupName);
|
|
if (gid == -1)
|
|
goto bad_group;
|
|
} else
|
|
gid = -1;
|
|
}
|
|
|
|
|
|
/* Find the selected user (if appropriate) */
|
|
if (whichApp==CHOWN_APP) {
|
|
uid = my_getpwnam(*argv);
|
|
if (uid == -1) {
|
|
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
|
|
exit( FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Ok, ready to do the deed now */
|
|
if (argc <= 1) {
|
|
fprintf(stderr, "%s: too few arguments", invocationName);
|
|
exit( FALSE);
|
|
}
|
|
while (argc-- > 1) {
|
|
if (recursiveAction( *(++argv), recursiveFlag, TRUE, FALSE, fileAction, fileAction)==FALSE)
|
|
exit( FALSE);
|
|
}
|
|
exit(TRUE);
|
|
|
|
bad_group:
|
|
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
|
|
exit( FALSE);
|
|
}
|
|
|
|
|