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 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