X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fmake_directory.c;h=fbec4e20e3081816ac2708705ec0a5c5b62201e6;hb=ab24e18c7a32ee1637be19f239e9dd9d7c7f6534;hp=e25ac21eeb60638ef2451e55628c56159b90dd27;hpb=822e7fd587d603b3a47e09d9be5305ccd9cc4c43;p=oweals%2Fbusybox.git

diff --git a/libbb/make_directory.c b/libbb/make_directory.c
index e25ac21ee..fbec4e20e 100644
--- a/libbb/make_directory.c
+++ b/libbb/make_directory.c
@@ -1,86 +1,104 @@
 /* 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;
 }