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/***************************************************************************
* CVSID: $Id$
*
* probe-serial.c : Probe serial ports
*
* Copyright (C) 2005 Pierre Ossman <drzeus@drzeus.cx>
*
* Licensed under the Academic Free License version 2.1
*
* 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 of the License, 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
**************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <fcntl.h>
#include <linux/types.h>
#include <linux/serial.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "libhal/libhal.h"
#include "../../logger.h"
int
main (int argc, char *argv[])
{
int fd;
int ret;
char *device_file;
struct serial_struct ss;
fd = -1;
/* assume failure */
ret = 1;
setup_logger ();
if (getenv ("UDI") == NULL) {
HAL_ERROR (("UDI not set"));
goto out;
}
if ((device_file = getenv ("HAL_PROP_SERIAL_DEVICE")) == NULL) {
HAL_ERROR (("HAL_PROP_SERIAL_DEVICE not set"));
goto out;
}
HAL_DEBUG (("Checking if %s is actually present", device_file));
/* Check that there actually is a drive at the other end */
fd = open (device_file, O_RDONLY | O_NONBLOCK);
if (fd < 0) {
HAL_ERROR (("Could not open %s", device_file));
goto out;
}
if (ioctl (fd, TIOCGSERIAL, &ss)) {
HAL_ERROR (("TIOCGSERIAL failed for %s", device_file));
goto out;
}
if (ss.type == 0) {
HAL_ERROR (("serial port %s seems not to exist", device_file));
goto out;
}
/* works */
ret = 0;
out:
if (fd >= 0)
close (fd);
return ret;
}
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