/***********************************************************************

*                                                                      *

*               This software is part of the ast package               *

*          Copyright (c) 1992-2012 AT&T Intellectual Property          *

*                      and is licensed under the                       *

*                 Eclipse Public License, Version 1.0                  *

*                    by AT&T Intellectual Property                     *

*                                                                      *

*                A copy of the License is available at                 *

*          http://www.eclipse.org/org/documents/epl-v10.html           *

*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

*                                                                      *

*              Information and Software Systems Research               *

*                            AT&T Research                             *

*                           Florham Park NJ                            *

*                                                                      *

*                 Glenn Fowler <gsf@research.att.com>                  *

*                  David Korn <dgk@research.att.com>                   *

*                                                                      *

***********************************************************************/

#pragma prototyped

/*

 * David Korn

 * AT&T Bell Laboratories

 *

 * mkfifo

 */

static const char usage[] =

"[-?\n@(#)$Id: mkfifo (AT&T Research) 2009-01-02 $\n]"

USAGE_LICENSE

"[+NAME?mkfifo - make FIFOs (named pipes)]"

"[+DESCRIPTION?\bmkfifo\b creates one or more FIFO's.  By "

	"default, the mode of created FIFO is \ba=rw\b minus the "

	"bits set in the \bumask\b(1).]"

"[m:mode]:[mode?Set the mode of created FIFO to \amode\a.  "

	"\amode\a is symbolic or octal mode as in \bchmod\b(1).  Relative "

	"modes assume an initial mode of \ba=rw\b.]"

"\n"

"\nfile ...\n"

"\n"

"[+EXIT STATUS?]{"

        "[+0?All FIFO's created successfully.]"

        "[+>0?One or more FIFO's could not be created.]"

"}"

"[+SEE ALSO?\bchmod\b(1), \bumask\b(1)]"

;

#include <cmd.h>

#include <ls.h>

int

b_mkfifo(int argc, char** argv, Shbltin_t* context)

{

	register char*	arg;

	register mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;

	register mode_t	mask = 0;

	register int	mflag = 0;

	cmdinit(argc, argv, context, ERROR_CATALOG, 0);

	for (;;)

	{

		switch (optget(argv, usage))

		{

		case 'm':

			mflag = 1;

			mode = strperm(arg = opt_info.arg, &opt_info.arg, mode);

			if (*opt_info.arg)

				error(ERROR_exit(0), "%s: invalid mode", arg);

			continue;

		case ':':

			error(2, "%s", opt_info.arg);

			break;

		case '?':

			error(ERROR_usage(2), "%s", opt_info.arg);

			break;

		}

		break;

	}

	argv += opt_info.index;

	if (error_info.errors || !*argv)

		error(ERROR_usage(2), "%s", optusage(NiL));

	mask = umask(0);

	if (!mflag)

	{

		mode &= ~mask;

		umask(mask);

		mask = 0;

	}

	while (arg = *argv++)

		if (mkfifo(arg, mode) < 0)

			error(ERROR_system(0), "%s:", arg);

	if (mask)

		umask(mask);

	return error_info.errors != 0;

}