/***************************************************************************
 *
 * hal-system-lcd-get-brightness-sunos.c : Get LCD brightness
 *
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Licensed under the Academic Free License version 2.1
 *
 **************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include "../../hald/util.h"
#include <sys/acpi_drv.h>

int
main(int argc, char *argv[])
{
        struct acpi_drv_output_status status;
        int fd = -1;
        char *udi;
        char device_file[HAL_PATH_MAX] = "/devices";
        char *devfs_path;

        if ((udi = getenv("UDI")) == NULL) {
                return (-1);
        }
        if ((devfs_path = getenv("HAL_PROP_SOLARIS_DEVFS_PATH")) == NULL) {
                return (-1);
        }

        strlcat(device_file, devfs_path, HAL_PATH_MAX);
        fprintf(stderr, "Getting brightness on %s (udi=%s)",
            device_file, udi);
        if ((fd = open(device_file, O_RDONLY | O_NONBLOCK)) < 0) {
                fprintf(stderr, "Cannot open %s: %s", device_file,
                    strerror(errno));
                return (-1);
        }

        bzero(&status, sizeof (status));
        if (ioctl(fd, ACPI_DRV_IOC_STATUS, &status) < 0) {
                close(fd);
                return (-1);
        } else {
                close(fd);
                return (status.cur_level_index);
        }
}