+/* vi: set sw=4 ts=4: */
/*
- * Mini chmod implementation for busybox
+ * Mini chown/chmod/chgrp implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ *
+ * Copyright (C) 1999,2000,2001 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
*/
#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";
-
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include "busybox.h"
-
-static int fileAction(const char *fileName)
+static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
- struct stat statBuf;
- if ((stat(fileName, &statBuf) < 0) ||
- (chmod(fileName, mode)) < 0) {
+ if (!parse_mode((char *)junk, &(statbuf->st_mode)))
+ error_msg_and_die("internal error");
+ if (chmod(fileName, statbuf->st_mode) == 0)
+ return (TRUE);
perror(fileName);
- return( FALSE);
- }
- return( TRUE);
+ return (FALSE);
}
-/* [ugoa]{+|-|=}[rwxstl] */
-int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute)
+int chmod_main(int argc, char **argv)
{
- 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;
+ int i;
+ int opt;
+ int recursiveFlag = FALSE;
+
+ /* do normal option parsing */
+ while ((opt = getopt(argc, argv, "R")) > 0) {
+ switch (opt) {
+ case 'R':
+ recursiveFlag = TRUE;
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;
+ show_usage();
}
+ }
- 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;
+ if (argc > optind && argc > 2 && argv[optind]) {
+ /* Parse the specified mode */
+ mode_t mode;
+ if (parse_mode(argv[optind], &mode) == FALSE) {
+ error_msg_and_die( "unknown mode: %s", argv[optind]);
}
- 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);
+ } else {
+ error_msg_and_die(too_few_args);
}
- 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);
+ /* Ok, ready to do the deed now */
+ for (i = optind + 1; i < argc; i++) {
+ if (recursive_action (argv[i], recursiveFlag, FALSE, FALSE, fileAction,
+ fileAction, argv[optind]) == FALSE) {
+ return EXIT_FAILURE;
+ }
+ }
+ return EXIT_SUCCESS;
}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff