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/* mkfifo -- make fifo's (named pipes)
Copyright (C) 90, 91, 1995-2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* David MacKenzie <djm@ai.mit.edu> */
#include <config.h>
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
#include "system.h"
#include "chmod-safer.h"
#include "error.h"
#include "modechange.h"
#include "quote.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "mkfifo"
#define AUTHORS "David MacKenzie"
/* The name this program was run with. */
char *program_name;
static struct option const longopts[] =
{
{"mode", required_argument, NULL, 'm'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
};
#ifdef S_ISFIFO
void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("Usage: %s [OPTION] NAME...\n"), program_name);
fputs (_("\
Create named pipes (FIFOs) with the given NAMEs.\n\
\n\
"), stdout);
fputs (_("\
Mandatory arguments to long options are mandatory for short options too.\n\
"), stdout);
fputs (_("\
-m, --mode=MODE set permission mode (as in chmod), not a=rw - umask\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
}
#endif
int
main (int argc, char **argv)
{
mode_t newmode;
mode_t tmp_mode;
const char *specified_mode;
int exit_status = EXIT_SUCCESS;
int optc;
initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
specified_mode = NULL;
#ifndef S_ISFIFO
error (EXIT_FAILURE, 0, _("fifo files not supported"));
#else
while ((optc = getopt_long (argc, argv, "m:", longopts, NULL)) != -1)
{
switch (optc)
{
case 'm':
specified_mode = optarg;
break;
case_GETOPT_HELP_CHAR;
case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
default:
usage (EXIT_FAILURE);
}
}
if (optind == argc)
{
error (0, 0, _("missing operand"));
usage (EXIT_FAILURE);
}
newmode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
if (specified_mode)
{
struct mode_change *change = mode_compile (specified_mode);
if (!change)
error (EXIT_FAILURE, 0, _("invalid mode"));
newmode = mode_adjust (newmode, change, umask (0));
free (change);
}
/* This is the mode we'll use in the mknod or mkfifo call.
If it doesn't include S_IRUSR, use S_IRUSR so the final
open-for-fchmod will succeed. */
tmp_mode = (newmode & S_IRUSR) ? newmode : S_IRUSR;
for (; optind < argc; ++optind)
{
int fail = mkfifo (argv[optind], tmp_mode);
if (fail)
error (0, errno, _("cannot create fifo %s"), quote (argv[optind]));
/* If the containing directory happens to have a default ACL, chmod
ensures the file mode permission bits are still set as desired. */
if (fail == 0 && specified_mode)
{
fail = chmod_safer (argv[optind], newmode, 0, S_IFIFO);
if (fail)
error (0, errno, _("cannot set permissions of fifo %s"),
quote (argv[optind]));
}
if (fail)
exit_status = EXIT_FAILURE;
}
exit (exit_status);
#endif
}
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