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126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
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* Mini chown/chgrp implementation for busybox
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*
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* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <grp.h>
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#include <pwd.h>
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#include "internal.h"
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static int uid=-1;
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static int gid=0;
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static int chownApp;
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static char* invocationName=NULL;
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const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
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"Change the group membership of each FILE to GROUP.\n"
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"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
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const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
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"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
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"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
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static int fileAction(const char *fileName)
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{
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struct stat statBuf;
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if ((stat(fileName, &statBuf) < 0) ||
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(chown(fileName,
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((chownApp==TRUE)? uid: statBuf.st_uid),
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gid) < 0)) {
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perror(fileName);
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return( TRUE);
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}
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return( FALSE);
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}
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int chown_main(int argc, char **argv)
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{
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struct group *grp;
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struct passwd *pwd;
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int recursiveFlag=FALSE;
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char *groupName;
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chownApp = (strcmp(*argv, "chown")==0)? TRUE : FALSE;
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if (argc < 2) {
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fprintf(stderr, "Usage: %s %s", *argv,
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(chownApp==TRUE)? chown_usage : chgrp_usage);
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return( FALSE);
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}
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invocationName=*argv;
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argc--;
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argv++;
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/* Parse options */
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while (**argv == '-') {
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while (*++(*argv)) switch (**argv) {
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case 'R':
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recursiveFlag = TRUE;
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break;
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default:
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fprintf(stderr, "Unknown option: %c\n", **argv);
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return( FALSE);
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}
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argc--;
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argv++;
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}
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/* Find the selected group */
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groupName = strchr(*argv, '.');
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if ( chownApp==TRUE && groupName )
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*groupName++ = '\0';
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else
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groupName = *argv;
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grp = getgrnam(groupName);
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if (grp == NULL) {
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fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
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return( FALSE);
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}
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gid = grp->gr_gid;
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/* Find the selected user (if appropriate) */
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if (chownApp==TRUE) {
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pwd = getpwnam(*argv);
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if (pwd == NULL) {
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fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
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return( FALSE);
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}
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uid = pwd->pw_uid;
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}
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/* Ok, ready to do the deed now */
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if (argc <= 1) {
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fprintf(stderr, "%s: too few arguments", invocationName);
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return( FALSE);
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}
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while (argc-- > 1) {
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argv++;
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if (recursiveFlag==TRUE)
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recursiveAction( *argv, TRUE, fileAction, fileAction);
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else
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fileAction( *argv);
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}
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return(TRUE);
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}
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