X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=coreutils%2Fmknod.c;h=aa04504819e242c0ac15a675a5e4b5e567344572;hb=68c048fb23bd8b0831bbd02ec66900b12390cf19;hp=59294e9cbb156e36c2ab5adc67c75622049056d4;hpb=cad5364599eb5062d59e0c397ed638ddd61a8d5d;p=oweals%2Fbusybox.git

diff --git a/coreutils/mknod.c b/coreutils/mknod.c
index 59294e9cb..aa0450481 100644
--- a/coreutils/mknod.c
+++ b/coreutils/mknod.c
@@ -4,59 +4,72 @@
  *
  * 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.
- *
- * 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
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
 /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
 
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include "busybox.h"
+//usage:#define mknod_trivial_usage
+//usage:       "[-m MODE] " IF_SELINUX("[-Z] ") "NAME TYPE MAJOR MINOR"
+//usage:#define mknod_full_usage "\n\n"
+//usage:       "Create a special file (block, character, or pipe)\n"
+//usage:     "\n	-m MODE	Creation mode (default a=rw)"
+//usage:	IF_SELINUX(
+//usage:     "\n	-Z	Set security context"
+//usage:	)
+//usage:     "\nTYPE:"
+//usage:     "\n	b	Block device"
+//usage:     "\n	c or u	Character device"
+//usage:     "\n	p	Named pipe (MAJOR and MINOR are ignored)"
+//usage:
+//usage:#define mknod_example_usage
+//usage:       "$ mknod /dev/fd0 b 2 0\n"
+//usage:       "$ mknod -m 644 /tmp/pipe p\n"
+
+#include <sys/sysmacros.h>  // For makedev
+
+#include "libbb.h"
 #include "libcoreutils/coreutils.h"
 
-static const char modes_chars[] = { 'p', 'c', 'u', 'b', 0, 1, 1, 2 };
+/* This is a NOEXEC applet. Be very careful! */
+
+static const char modes_chars[] ALIGN1 = { 'p', 'c', 'u', 'b', 0, 1, 1, 2 };
 static const mode_t modes_cubp[] = { S_IFIFO, S_IFCHR, S_IFBLK };
 
-extern int mknod_main(int argc, char **argv)
+int mknod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int mknod_main(int argc, char **argv)
 {
 	mode_t mode;
 	dev_t dev;
 	const char *name;
 
-	mode = getopt_mk_fifo_nod(argc, argv);
+	mode = getopt_mk_fifo_nod(argv);
 	argv += optind;
 	argc -= optind;
 
-	if ((argc >= 2) && ((name = strchr(modes_chars, argv[1][0])) != NULL)) {
-		mode |= modes_cubp[(int)(name[4])];
+	if (argc >= 2) {
+		name = strchr(modes_chars, argv[1][0]);
+		if (name != NULL) {
+			mode |= modes_cubp[(int)(name[4])];
 
-		dev = 0;
-		if ((*name != 'p') && ((argc -= 2) == 0)) {
-			dev = (bb_xgetularg10_bnd(argv[2], 0, 255) << 8)
-				+ bb_xgetularg10_bnd(argv[3], 0, 255);
-		}
-	
-		if (argc == 2) {
-			name = *argv;
-			if (mknod(name, mode, dev) == 0) {
-				return EXIT_SUCCESS;
+			dev = 0;
+			if (*name != 'p') {
+				argc -= 2;
+				if (argc == 2) {
+					/* Autodetect what the system supports; these macros should
+					 * optimize out to two constants. */
+					dev = makedev(xatoul_range(argv[2], 0, major(UINT_MAX)),
+							xatoul_range(argv[3], 0, minor(UINT_MAX)));
+				}
+			}
+
+			if (argc == 2) {
+				name = *argv;
+				if (mknod(name, mode, dev) == 0) {
+					return EXIT_SUCCESS;
+				}
+				bb_simple_perror_msg_and_die(name);
 			}
-			bb_perror_msg_and_die("%s", name);
 		}
 	}
 	bb_show_usage();