diff options
Diffstat (limited to 'chmod.c')
| -rw-r--r-- | chmod.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/chmod.c b/chmod.c deleted file mode 100644 index 9f84d0d37..000000000 --- a/chmod.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Mini chmod 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 mode_t mode=7777; - - -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; - if ((stat(fileName, &statBuf) < 0) || - (chmod(fileName, mode)) < 0) { - perror(fileName); - return( FALSE); - } - return( TRUE); -} - -/* [ugoa]{+|-|=}[rwxstl] */ -int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute) -{ - mode_t mode = 0; - mode_t groups = S_ISVTX; - char type; - char c; - - do { - for ( ; ; ) { - switch ( c = *s++ ) { - case '\0': - return (FALSE); - case 'u': - groups |= S_ISUID|S_IRWXU; - continue; - case 'g': - groups |= S_ISGID|S_IRWXG; - continue; - case 'o': - groups |= S_IRWXO; - continue; - case 'a': - groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - continue; - case '+': - case '=': - case '-': - type = c; - if ( groups == S_ISVTX ) /* The default is "all" */ - groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - break; - default: - if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) { - *and = 0; - *or = strtol(--s, 0, 010); - return (TRUE); - } - else - return (FALSE); - } - break; - } - - while ( (c = *s++) != '\0' ) { - switch ( c ) { - case ',': - break; - case 'r': - mode |= S_IRUSR|S_IRGRP|S_IROTH; - continue; - case 'w': - mode |= S_IWUSR|S_IWGRP|S_IWOTH; - continue; - case 'x': - mode |= S_IXUSR|S_IXGRP|S_IXOTH; - continue; - case 's': - if ( group_execute != 0 && (groups & S_IRWXG) ) { - if ( *group_execute < 0 ) - return (FALSE); - if ( type != '-' ) { - mode |= S_IXGRP; - *group_execute = 1; - } - } - mode |= S_ISUID|S_ISGID; - continue; - case 'l': - if ( *group_execute > 0 ) - return (FALSE); - if ( type != '-' ) { - *and &= ~S_IXGRP; - *group_execute = -1; - } - mode |= S_ISGID; - groups |= S_ISGID; - continue; - case 't': - mode |= S_ISVTX; - continue; - default: - return (FALSE); - } - break; - } - switch ( type ) { - case '=': - *and &= ~(groups); - /* fall through */ - case '+': - *or |= mode & groups; - break; - case '-': - *and &= ~(mode & groups); - *or &= *and; - break; - } - } while ( c == ',' ); - return (TRUE); -} - - -int chmod_main(int argc, char **argv) -{ - int recursiveFlag=FALSE; - mode_t andWithMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - mode_t orWithMode = 0; - char *invocationName=*argv; - - if (argc < 3) { - fprintf(stderr, "Usage: %s %s", invocationName, chmod_usage); - exit( FALSE); - } - 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 */ - if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) { - fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv); - exit( FALSE); - } - mode &= andWithMode; - mode |= orWithMode; - - /* 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); -} |