| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini chown/chmod/chgrp implementation for busybox |
| * |
| * |
| * Copyright (C) 1999,2000 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 "internal.h" |
| #define BB_DECLARE_EXTERN |
| #define bb_need_invalid_option |
| #define bb_need_too_few_args |
| #include "messages.c" |
| |
| #include <stdio.h> |
| #include <grp.h> |
| #include <pwd.h> |
| |
| |
| static unsigned long uid = -1; |
| static unsigned long gid = -1; |
| static int whichApp; |
| static char *invocationName = NULL; |
| static char *theMode = NULL; |
| |
| |
| #define CHGRP_APP 1 |
| #define CHOWN_APP 2 |
| #define CHMOD_APP 3 |
| |
| static const char chgrp_usage[] = "chgrp [OPTION]... GROUP FILE...\n" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nChange the group membership of each FILE to GROUP.\n" |
| "\nOptions:\n\t-R\tChanges files and directories recursively.\n" |
| #endif |
| ; |
| static const char chown_usage[] = |
| "chown [OPTION]... OWNER[<.|:>[GROUP] FILE...\n" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nChange the owner and/or group of each FILE to OWNER and/or GROUP.\n" |
| "\nOptions:\n\t-R\tChanges files and directories recursively.\n" |
| #endif |
| ; |
| static const char chmod_usage[] = |
| "chmod [-R] MODE[,MODE]... FILE...\n" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nEach MODE is one or more of the letters ugoa, one of the symbols +-= and\n" |
| "one or more of the letters rwxst.\n\n" |
| "\nOptions:\n\t-R\tChanges files and directories recursively.\n" |
| #endif |
| ; |
| |
| |
| 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) { |
| fatalError( "%s: unknown mode: %s\n", invocationName, 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 recursiveFlag = FALSE; |
| char *groupName; |
| char *p; |
| const char *appUsage; |
| |
| whichApp = (strcmp(*argv, "chown") == 0)? |
| CHOWN_APP : (strcmp(*argv, "chmod") == 0)? |
| CHMOD_APP : CHGRP_APP; |
| |
| appUsage = (whichApp == CHOWN_APP)? |
| chown_usage : (whichApp == CHMOD_APP) ? chmod_usage : chgrp_usage; |
| |
| if (argc < 2) |
| usage(appUsage); |
| invocationName = *argv; |
| argv++; |
| |
| /* Parse options */ |
| while (--argc >= 0 && *argv && (**argv == '-')) { |
| while (*++(*argv)) { |
| switch (**argv) { |
| case 'R': |
| recursiveFlag = TRUE; |
| break; |
| default: |
| fprintf(stderr, invalid_option, invocationName, **argv); |
| usage(appUsage); |
| } |
| } |
| argv++; |
| } |
| |
| if (argc == 0 || *argv == NULL) { |
| fprintf(stderr, too_few_args, invocationName); |
| usage(appUsage); |
| } |
| |
| if (whichApp == CHMOD_APP) { |
| 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) { |
| fatalError( "%s: unknown user name: %s\n", |
| invocationName, *argv); |
| } |
| } |
| } |
| |
| /* Ok, ready to do the deed now */ |
| if (argc <= 1) { |
| fatalError( "%s: too few arguments\n", invocationName); |
| } |
| while (argc-- > 1) { |
| if (recursiveAction (*(++argv), recursiveFlag, FALSE, FALSE, |
| fileAction, fileAction, NULL) == FALSE) |
| exit(FALSE); |
| } |
| exit(TRUE); |
| |
| bad_group: |
| fatalError( "%s: unknown group name: %s\n", invocationName, groupName); |
| } |
| |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |