mirror of
git://git.sv.gnu.org/coreutils
synced 2026-06-05 15:22:12 -04:00
Jim Meyering
151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
/* mkfifo -- make fifo's (named pipes)
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Options:
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-m, --mode=mode Set the mode of created fifo's to MODE, which is
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symbolic as in chmod and uses the umask as a point of
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departure.
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David MacKenzie <djm@ai.mit.edu> */
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#ifdef HAVE_CONFIG_H
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#if defined (CONFIG_BROKETS)
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/* We use <config.h> instead of "config.h" so that a compilation
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using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
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(which it would do because it found this file in $srcdir). */
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#include <config.h>
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#else
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#include "config.h"
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#endif
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#endif
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#include <stdio.h>
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#include <getopt.h>
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#include <sys/types.h>
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#include "system.h"
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#include "modechange.h"
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#include "version.h"
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void error ();
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static void usage ();
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/* The name this program was run with. */
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char *program_name;
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/* If non-zero, display usage information and exit. */
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static int show_help;
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/* If non-zero, print the version on standard output and exit. */
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static int show_version;
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static struct option const longopts[] =
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{
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{"mode", required_argument, NULL, 'm'},
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{"help", no_argument, &show_help, 1},
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{"version", no_argument, &show_version, 1},
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{NULL, 0, NULL, 0}
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};
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void
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main (argc, argv)
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int argc;
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char **argv;
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{
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unsigned short newmode;
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struct mode_change *change;
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char *symbolic_mode;
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int errors = 0;
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int optc;
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program_name = argv[0];
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symbolic_mode = NULL;
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#ifndef S_ISFIFO
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error (4, 0, "fifo files not supported");
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#else
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while ((optc = getopt_long (argc, argv, "m:", longopts, (int *) 0)) != EOF)
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{
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switch (optc)
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{
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case 0:
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break;
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case 'm':
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symbolic_mode = optarg;
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break;
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default:
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usage (1);
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}
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}
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if (show_version)
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{
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printf ("%s\n", version_string);
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exit (0);
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}
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if (show_help)
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usage (0);
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if (optind == argc)
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usage (1);
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newmode = 0666 & ~umask (0);
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if (symbolic_mode)
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{
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change = mode_compile (symbolic_mode, 0);
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if (change == MODE_INVALID)
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error (1, 0, "invalid mode");
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else if (change == MODE_MEMORY_EXHAUSTED)
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error (1, 0, "virtual memory exhausted");
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newmode = mode_adjust (newmode, change);
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}
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for (; optind < argc; ++optind)
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{
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if (mkfifo (argv[optind], newmode))
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{
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error (0, errno, "cannot make fifo `%s'", argv[optind]);
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errors = 1;
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}
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}
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exit (errors);
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#endif
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}
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#ifdef S_ISFIFO
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static void
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usage (status)
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int status;
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{
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if (status != 0)
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fprintf (stderr, "Try `%s --help' for more information.\n",
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program_name);
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else
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{
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printf ("Usage: %s [OPTION] PATH...\n", program_name);
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printf ("\
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\n\
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-m, --mode=MODE set permission mode (as in chmod), not 0666 - umask\n\
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--help display this help and exit\n\
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--version output version information and exit\n");
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}
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exit (status);
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}
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#endif
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