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/* mkfifo -- make fifo's (named pipes)
Copyright (C) 1990, 1991, 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Options:
-m, --mode=mode Set the mode of created fifo's 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 "version.h"
#include "error.h"
static void usage (int status);
/* The name this program was run with. */
char *program_name;
/* If non-zero, display usage information and exit. */
static int show_help;
/* If non-zero, 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}
};
void
main (int argc, char **argv)
{
unsigned short newmode;
struct mode_change *change;
char *symbolic_mode;
int errors = 0;
int optc;
program_name = argv[0];
symbolic_mode = NULL;
#ifndef S_ISFIFO
error (4, 0, "fifo files not supported");
#else
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 ("mkfifo - %s\n", version_string);
exit (0);
}
if (show_help)
usage (0);
if (optind == argc)
{
error (0, 0, "too few arguments");
usage (1);
}
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);
}
for (; optind < argc; ++optind)
{
if (mkfifo (argv[optind], newmode))
{
error (0, errno, "cannot make fifo `%s'", argv[optind]);
errors = 1;
}
}
exit (errors);
#endif
}
#ifdef S_ISFIFO
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...\n", program_name);
printf ("\
Create named pipes (FIFOs) with the given NAMEs.\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");
}
exit (status);
}
#endif
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