/* vi: set sw=4 ts=4: */
/*
- * Mini make_directory implementation for busybox
+ * parse_mode implementation for busybox
*
- * Copyright (C) 2001 Matt Kraai.
- *
- * Rewriten in 2002
- * Copyright (C) 2002 Glenn McGrath
- * Copyright (C) 2002 Vladimir N. Oleynik
+ * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.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.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* Mar 5, 2003 Manuel Novoa III
*
- * 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.
+ * This is the main work function for the 'mkdir' applet. As such, it
+ * strives to be SUSv3 compliant in it's behaviour when recursively
+ * making missing parent dirs, and in it's mode setting of the final
+ * directory 'path'.
*
- * 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
+ * To recursively build all missing intermediate directories, make
+ * sure that (flags & FILEUTILS_RECUR) is non-zero. Newly created
+ * intermediate directories will have at least u+wx perms.
*
+ * To set specific permissions on 'path', pass the appropriate 'mode'
+ * val. Otherwise, pass -1 to get default permissions.
*/
#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
#include <unistd.h>
-#include <stdlib.h>
-
+#include <sys/stat.h>
#include "libbb.h"
-/* Create the directory PATH with mode MODE, or the default if MODE is -1.
- * Also create parent directories as necessary if flags contains
- * FILEUTILS_RECUR. */
-
-static mode_t default_permission(char *path, mode_t old_permision)
+int bb_make_directory (char *path, long mode, int flags)
{
- struct stat statbuf;
- char *pp;
-
- statbuf.st_mode = 0777;
+ mode_t mask;
+ const char *fail_msg;
+ char *s = path;
+ char c;
+ struct stat st;
- /* stat the directory */
- pp = strrchr(path, '/');
- if ((pp) && (pp != path)) {
- *pp = '\0';
- stat(path, &statbuf);
- *pp = '/';
+ mask = umask(0);
+ if (mode == -1) {
+ umask(mask);
+ mode = (S_IXUSR | S_IXGRP | S_IXOTH |
+ S_IWUSR | S_IWGRP | S_IWOTH |
+ S_IRUSR | S_IRGRP | S_IROTH) & ~mask;
+ } else {
+ umask(mask & ~0300);
}
- return(statbuf.st_mode & old_permision);
-}
-
-int make_directory (char *path, long mode, int flags)
-{
- int ret;
+ do {
+ c = 0;
- if (flags == FILEUTILS_RECUR) {
- char *pp = strrchr(path, '/');
- if ((pp) && (pp != path)) {
- *pp = '\0';
- make_directory(path, -1, flags);
- *pp = '/';
+ if (flags & FILEUTILS_RECUR) { /* Get the parent. */
+ /* Bypass leading non-'/'s and then subsequent '/'s. */
+ while (*s) {
+ if (*s == '/') {
+ do {
+ ++s;
+ } while (*s == '/');
+ c = *s; /* Save the current char */
+ *s = 0; /* and replace it with nul. */
+ break;
+ }
+ ++s;
+ }
}
- }
- if (mode == -1) {
- mode = default_permission(path, 07777);
- }
+ if (mkdir(path, 0777) < 0) {
+ /* If we failed for any other reason than the directory
+ * already exists, output a diagnostic and return -1.*/
+ if (errno != EEXIST
+ || !(flags & FILEUTILS_RECUR)
+ || (stat(path, &st) < 0 || !S_ISDIR(st.st_mode))) {
+ fail_msg = "create";
+ umask(mask);
+ break;
+ }
+ /* Since the directory exists, don't attempt to change
+ * permissions if it was the full target. Note that
+ * this is not an error conditon. */
+ if (!c) {
+ umask(mask);
+ return 0;
+ }
+ }
- ret = mkdir(path, mode);
- if (ret == -1) {
- if ((flags == FILEUTILS_RECUR) && (errno == EEXIST)) {
- ret = 0;
- } else {
- perror_msg_and_die("Cannot create directory '%s'", path);
+ if (!c) {
+ /* Done. If necessary, updated perms on the newly
+ * created directory. Failure to update here _is_
+ * an error.*/
+ umask(mask);
+ if ((mode != -1) && (chmod(path, mode) < 0)){
+ fail_msg = "set permissions of";
+ break;
+ }
+ return 0;
}
- }
- return(ret);
+ /* Remove any inserted nul from the path (recursive mode). */
+ *s = c;
+
+ } while (1);
+
+ bb_perror_msg ("cannot %s directory '%s'", fail_msg, path);
+ return -1;
}
projects / oweals / busybox.git / blobdiff