1 /***************************************************************************
2 *
3 * hal-system-lcd-get-brightness-sunos.c : Get LCD brightness
4 *
5 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
6 * Use is subject to license terms.
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 **************************************************************************/
11
12 #ifdef HAVE_CONFIG_H
13 #include <config.h>
14 #endif
15
16 #include <errno.h>
17 #include <string.h>
18 #include <strings.h>
19 #include <ctype.h>
20 #include <stdlib.h>
21 #include <stdio.h>
22 #include <sys/ioctl.h>
23 #include <fcntl.h>
24 #include <unistd.h>
25 #include "../../hald/util.h"
26 #include <sys/acpi_drv.h>
27
28 int
main(int argc,char * argv[])29 main(int argc, char *argv[])
30 {
31 struct acpi_drv_output_status status;
32 int fd = -1;
33 char *udi;
34 char device_file[HAL_PATH_MAX] = "/devices";
35 char *devfs_path;
36
37 if ((udi = getenv("UDI")) == NULL) {
38 return (-1);
39 }
40 if ((devfs_path = getenv("HAL_PROP_SOLARIS_DEVFS_PATH")) == NULL) {
41 return (-1);
42 }
43
44 strlcat(device_file, devfs_path, HAL_PATH_MAX);
45 fprintf(stderr, "Getting brightness on %s (udi=%s)",
46 device_file, udi);
47 if ((fd = open(device_file, O_RDONLY | O_NONBLOCK)) < 0) {
48 fprintf(stderr, "Cannot open %s: %s", device_file,
49 strerror(errno));
50 return (-1);
51 }
52
53 bzero(&status, sizeof (status));
54 if (ioctl(fd, ACPI_DRV_IOC_STATUS, &status) < 0) {
55 close(fd);
56 return (-1);
57 } else {
58 close(fd);
59 return (status.cur_level_index);
60 }
61 }
62