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- /* mknod -- make special files
- Copyright (C) 90, 91, 95, 1996 Free Software Foundation, Inc.
-
- 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, 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. */
-
- /* Usage: mknod [-m mode] [--mode=mode] path {bcu} major minor
- make a block or character device node
- mknod [-m mode] [--mode=mode] path p
- make a FIFO (named pipe)
-
- Options:
- -m, --mode=mode Set the mode of created nodes to MODE, which is
- symbolic as in chmod and uses the umask as a point of
- departure.
-
- David MacKenzie <djm@ai.mit.edu> */
-
- #include <config.h>
- #include <stdio.h>
- #include <getopt.h>
- #include <sys/types.h>
-
- #include "system.h"
- #include "modechange.h"
- #include "error.h"
- #include "xstrtol.h"
-
- /* The name this program was run with. */
- char *program_name;
-
- /* If nonzero, display usage information and exit. */
- static int show_help;
-
- /* If nonzero, print the version on standard output and exit. */
- static int show_version;
-
- static struct option const longopts[] =
- {
- {"mode", required_argument, NULL, 'm'},
- {"help", no_argument, &show_help, 1},
- {"version", no_argument, &show_version, 1},
- {NULL, 0, NULL, 0}
- };
-
- static void
- usage (int status)
- {
- if (status != 0)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
- else
- {
- printf (_("Usage: %s [OPTION]... NAME TYPE [MAJOR MINOR]\n"), program_name);
- printf (_("\
- Create the special file NAME of the given TYPE.\n\
- \n\
- -m, --mode=MODE set permission mode (as in chmod), not 0666 - umask\n\
- --help display this help and exit\n\
- --version output version information and exit\n\
- \n\
- MAJOR MINOR are forbidden for TYPE p, mandatory otherwise. TYPE may be:\n\
- \n\
- b create a block (buffered) special file\n\
- c, u create a character (unbuffered) special file\n\
- p create a FIFO\n"));
- }
- exit (status);
- }
-
- int
- main (int argc, char **argv)
- {
- unsigned short newmode;
- struct mode_change *change;
- char *symbolic_mode;
- int optc;
- int i_major, i_minor;
- long int tmp_major, tmp_minor;
- char *s;
-
- program_name = argv[0];
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- symbolic_mode = NULL;
-
- while ((optc = getopt_long (argc, argv, "m:", longopts, (int *) 0)) != EOF)
- {
- switch (optc)
- {
- case 0:
- break;
- case 'm':
- symbolic_mode = optarg;
- break;
- default:
- usage (1);
- }
- }
-
- if (show_version)
- {
- printf ("mknod - %s\n", PACKAGE_VERSION);
- exit (0);
- }
-
- if (show_help)
- usage (0);
-
- newmode = 0666 & ~umask (0);
- if (symbolic_mode)
- {
- change = mode_compile (symbolic_mode, 0);
- if (change == MODE_INVALID)
- error (1, 0, _("invalid mode"));
- else if (change == MODE_MEMORY_EXHAUSTED)
- error (1, 0, _("virtual memory exhausted"));
- newmode = mode_adjust (newmode, change);
- }
-
- if (argc - optind != 2 && argc - optind != 4)
- {
- const char *msg;
- if (argc - optind < 2)
- msg = _("too few arguments");
- else if (argc - optind > 4)
- msg = _("too many arguments");
- else
- msg = _("wrong number of arguments");
- error (0, 0, msg);
- usage (1);
- }
-
- /* Only check the first character, to allow mnemonic usage like
- `mknod /dev/rst0 character 18 0'. */
-
- switch (argv[optind + 1][0])
- {
- case 'b': /* `block' or `buffered' */
- #ifndef S_IFBLK
- error (4, 0, _("block special files not supported"));
- #else
- if (argc - optind != 4)
- {
- error (0, 0, _("\
- when creating block special files, major and minor device\n\
- numbers must be specified"));
- usage (1);
- }
-
- s = argv[optind + 2];
- if (xstrtol (s, NULL, 0, &tmp_major, NULL) != LONGINT_OK)
- error (1, 0, _("invalid major device number `%s'"), s);
-
- s = argv[optind + 3];
- if (xstrtol (s, NULL, 0, &tmp_minor, NULL) != LONGINT_OK)
- error (1, 0, _("invalid minor device number `%s'"), s);
-
- i_major = (int) tmp_major;
- i_minor = (int) tmp_minor;
-
- if (mknod (argv[optind], newmode | S_IFBLK, makedev (i_major, i_minor)))
- error (1, errno, "%s", argv[optind]);
- #endif
- break;
-
- case 'c': /* `character' */
- case 'u': /* `unbuffered' */
- #ifndef S_IFCHR
- error (4, 0, _("character special files not supported"));
- #else
- if (argc - optind != 4)
- {
- error (0, 0, _("\
- when creating character special files, major and minor device\n\
- numbers must be specified"));
- usage (1);
- }
-
- s = argv[optind + 2];
- if (xstrtol (s, NULL, 0, &tmp_major, NULL) != LONGINT_OK)
- error (1, 0, _("invalid major device number `%s'"), s);
-
- s = argv[optind + 3];
- if (xstrtol (s, NULL, 0, &tmp_minor, NULL) != LONGINT_OK)
- error (1, 0, _("invalid minor device number `%s'"), s);
-
- i_major = (int) tmp_major;
- i_minor = (int) tmp_minor;
-
- if (mknod (argv[optind], newmode | S_IFCHR, makedev (i_major, i_minor)))
- error (1, errno, "%s", argv[optind]);
- #endif
- break;
-
- case 'p': /* `pipe' */
- #ifndef S_ISFIFO
- error (4, 0, _("fifo files not supported"));
- #else
- if (argc - optind != 2)
- {
- error (0, 0, _("\
- major and minor device numbers may not be specified for fifo files"));
- usage (1);
- }
- if (mkfifo (argv[optind], newmode))
- error (1, errno, "%s", argv[optind]);
- #endif
- break;
-
- default:
- usage (1);
- }
-
- exit (0);
- }
-