/* * Mini chown/chmod/chgrp implementation for busybox * * Copyright (C) 1998 by Erik Andersen * * 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 #include #include #include "internal.h" static int uid=-1; static int gid=0; 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) < 0) return( TRUE); case CHMOD_APP: fprintf(stderr, "%s, %d\n", fileName, mode); if (chmod(fileName, mode)) return( TRUE); } perror(fileName); return( FALSE); } int chmod_chown_chgrp_main(int argc, char **argv) { struct group *grp; struct passwd *pwd; 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 &= 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); } //mode &= andWithMode; fprintf(stderr, "mode %d\n", mode); } else { /* Find the selected group */ groupName = strchr(*argv, '.'); if ( whichApp==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 (whichApp==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) { if (recursiveAction( *(++argv), recursiveFlag, TRUE, FALSE, fileAction, fileAction)==FALSE) exit( FALSE); } exit(TRUE); }