123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
|
|
* Mini chown/chgrp implementation for busybox
|
|
*
|
|
* Copyright (C) 1998 by Erik Andersen <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 int uid=-1;
|
|
static int gid=0;
|
|
static int chownApp;
|
|
static char* invocationName=NULL;
|
|
|
|
|
|
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 int fileAction(const char *fileName)
|
|
{
|
|
struct stat statBuf;
|
|
if ((stat(fileName, &statBuf) < 0) ||
|
|
(chown(fileName,
|
|
((chownApp==TRUE)? uid: statBuf.st_uid),
|
|
gid) < 0)) {
|
|
perror(fileName);
|
|
return( FALSE);
|
|
}
|
|
return( TRUE);
|
|
}
|
|
|
|
int chown_main(int argc, char **argv)
|
|
{
|
|
struct group *grp;
|
|
struct passwd *pwd;
|
|
int recursiveFlag=FALSE;
|
|
char *groupName;
|
|
|
|
|
|
chownApp = (strcmp(*argv, "chown")==0)? TRUE : FALSE;
|
|
|
|
if (argc < 2) {
|
|
fprintf(stderr, "Usage: %s %s", *argv,
|
|
(chownApp==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++;
|
|
}
|
|
|
|
/* Find the selected group */
|
|
groupName = strchr(*argv, '.');
|
|
if ( chownApp==TRUE && groupName )
|
|
*groupName++ = '\0';
|
|
else
|
|
groupName = *argv;
|
|
grp = getgrnam(groupName);
|
|
if (grp == NULL) {
|
|
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
|
|
exit( FALSE);
|
|
}
|
|
gid = grp->gr_gid;
|
|
|
|
/* Find the selected user (if appropriate) */
|
|
if (chownApp==TRUE) {
|
|
pwd = getpwnam(*argv);
|
|
if (pwd == NULL) {
|
|
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
|
|
exit( FALSE);
|
|
}
|
|
uid = pwd->pw_uid;
|
|
}
|
|
|
|
/* Ok, ready to do the deed now */
|
|
if (argc <= 1) {
|
|
fprintf(stderr, "%s: too few arguments", invocationName);
|
|
exit( FALSE);
|
|
}
|
|
while (argc-- > 1) {
|
|
argv++;
|
|
recursiveAction( *argv, recursiveFlag, TRUE, fileAction, fileAction);
|
|
}
|
|
exit(TRUE);
|
|
}
|