*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
+//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 };
-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) == 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)));
- }
+ 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;
+ 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();