LXR busybox/coreutils/mkfifo.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * mkfifo implementation for busybox
   4 *
   5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
   6 *
   7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8 */
   9//config:config MKFIFO
  10//config:       bool "mkfifo (3.7 kb)"
  11//config:       default y
  12//config:       help
  13//config:       mkfifo is used to create FIFOs (named pipes).
  14//config:       The 'mknod' program can also create FIFOs.
  15
  16//applet:IF_MKFIFO(APPLET_NOEXEC(mkfifo, mkfifo, BB_DIR_USR_BIN, BB_SUID_DROP, mkfifo))
  17
  18//kbuild:lib-$(CONFIG_MKFIFO) += mkfifo.o
  19
  20/* BB_AUDIT SUSv3 compliant */
  21/* http://www.opengroup.org/onlinepubs/007904975/utilities/mkfifo.html */
  22
  23//usage:#define mkfifo_trivial_usage
  24//usage:       "[-m MODE] " IF_SELINUX("[-Z] ") "NAME"
  25//usage:#define mkfifo_full_usage "\n\n"
  26//usage:       "Create named pipe\n"
  27//usage:     "\n        -m MODE Mode (default a=rw)"
  28//usage:        IF_SELINUX(
  29//usage:     "\n        -Z      Set security context"
  30//usage:        )
  31
  32#include "libbb.h"
  33#include "libcoreutils/coreutils.h"
  34
  35/* This is a NOEXEC applet. Be very careful! */
  36
  37int mkfifo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  38int mkfifo_main(int argc UNUSED_PARAM, char **argv)
  39{
  40        mode_t mode;
  41        int retval = EXIT_SUCCESS;
  42
  43        mode = getopt_mk_fifo_nod(argv);
  44
  45        argv += optind;
  46        if (!*argv) {
  47                bb_show_usage();
  48        }
  49
  50        do {
  51                if (mkfifo(*argv, mode) < 0) {
  52                        bb_simple_perror_msg(*argv);  /* Avoid multibyte problems. */
  53                        retval = EXIT_FAILURE;
  54                }
  55        } while (*++argv);
  56
  57        return retval;
  58}
  59