Radix cross Linux

/*
 * Copyright (c) 2000-2001 Silicon Graphics, Inc.; provided copyright in
 * certain portions may be held by third parties as indicated herein.
 * All Rights Reserved.
 *
 * The code in this source file represents an aggregation of work from
 * Georgia Tech, Fred Fish, Jeff Lee, Arnold Robbins and other Silicon
 * Graphics engineers over the period 1985-2000.
 *
 * 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.
 *
 * This program is distributed in the hope that it would 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 the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>

#include "rmtlib.h"

/*
 *	_rmt_status --- retrieve the status from the pipe
 */

int _rmt_status(fildes)
int fildes;
{
	int i;
	char c, *cp;
	char buffer[BUFMAGIC];

/*
 *	read the reply command line
 */

	for (i = 0, cp = buffer; i < BUFMAGIC; i++, cp++)
	{
		if (read(RMTREAD(fildes), cp, 1) != 1)
		{
			_rmt_abort(fildes);
			setoserror(EIO);
			return(-1);
		}
		if (*cp == '\n')
		{
			*cp = 0;
			break;
		}
	}

	if (i == BUFMAGIC)
	{
		_rmt_abort(fildes);
		setoserror(EIO);
		return(-1);
	}

/*
 *	check the return status
 */

	for (cp = buffer; *cp; cp++)
		if (*cp != ' ')
			break;

	if (*cp == 'E' || *cp == 'F')
	{
		setoserror(atoi(cp + 1));
		while (read(RMTREAD(fildes), &c, 1) == 1)
			if (c == '\n')
				break;

		if (*cp == 'F')
			_rmt_abort(fildes);

		return(-1);
	}

/*
 *	check for mis-synced pipes
 */

	if (*cp != 'A')
	{
		_rmt_abort(fildes);
		setoserror(EIO);
		return(-1);
	}

	return(atoi(cp + 1));
}