Bump version to 1.32.0

[oweals/busybox.git] / coreutils / mknod.c

diff --git a/coreutils/mknod.c b/coreutils/mknod.c
index b6e85272daf795bd9e7a268af9c67017f5a98456..eee0ac71dfd71ae1d6784c6951c05f3303b87eeb 100644 (file)
--- a/coreutils/mknod.c
+++ b/coreutils/mknod.c
@@ -4,62 +4,83 @@
  *
  * 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.
  */
+//config:config MKNOD
+//config:      bool "mknod (4.5 kb)"
+//config:      default y
+//config:      help
+//config:      mknod is used to create FIFOs or block/character special
+//config:      files with the specified names.
+
+//applet:IF_MKNOD(APPLET_NOEXEC(mknod, mknod, BB_DIR_BIN, BB_SUID_DROP, mknod))
+
+//kbuild:lib-$(CONFIG_MKNOD) += mknod.o
 
 /* 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 MINOR must be omitted)"
+//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 UNUSED_PARAM, char **argv)
 {
        mode_t mode;
        dev_t dev;
-       const char *name;
+       const char *type, *arg;
 
-       mode = getopt_mk_fifo_nod(argc, argv);
+       mode = getopt_mk_fifo_nod(argv);
        argv += optind;
-       argc -= optind;
+       //argc -= optind;
 
-       if ((argc >= 2) && ((name = strchr(modes_chars, argv[1][0])) != NULL)) {
-               mode |= modes_cubp[(int)(name[4])];
+       if (!argv[0] || !argv[1])
+               bb_show_usage();
+       type = strchr(modes_chars, argv[1][0]);
+       if (!type)
+               bb_show_usage();
 
-               dev = 0;
-               if ((*name != 'p') && ((argc -= 2) == 2)) {
-                       /* Autodetect what the system supports; thexe macros should
-                        * optimize out to two constants. */
-                       dev = makedev(bb_xgetularg10_bnd(argv[2], 0, major(UINT_MAX)),
-                                                 bb_xgetularg10_bnd(argv[3], 0, minor(UINT_MAX)));
-               }
+       mode |= modes_cubp[(int)(type[4])];
+
+       dev = 0;
+       arg = argv[2];
+       if (*type != 'p') {
+               if (!argv[2] || !argv[3])
+                       bb_show_usage();
+               /* 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)));
+               arg = argv[4];
+       }
+       if (arg)
+               bb_show_usage();
 
-               if (argc == 2) {
-                       name = *argv;
-                       if (mknod(name, mode, dev) == 0) {
-                               return EXIT_SUCCESS;
-                       }
-                       bb_perror_msg_and_die("%s", name);
-               }
+       if (mknod(argv[0], mode, dev) != 0) {
+               bb_simple_perror_msg_and_die(argv[0]);
        }
-       bb_show_usage();
+       return EXIT_SUCCESS;
 }