/* battstat A MATE battery meter for laptops. * Copyright (C) 2000 by Jörgen Pehrson * Copyright (C) 2002-2005 Free Software Foundation * * 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., 59 Temple Street #330, Boston, MA 02110-1301, USA. * $Id$ */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #ifdef HAVE_SYS_SYSCTL_H #include #endif #ifdef HAVE_ERR_H #include #endif #include #include #include #include #include "battstat.h" #include "battstat-hal.h" #include "battstat-upower.h" #define ERR_ACPID _("Can't access ACPI events in /var/run/acpid.socket! " \ "Make sure the ACPI subsystem is working and " \ "the acpid daemon is running.") #define ERR_OPEN_APMDEV _("Can't open the APM device!\n\n" \ "Make sure you have read permission to the\n" \ "APM device.") #define ERR_APM_E _("The APM Management subsystem seems to be disabled.\n" \ "Try executing \"apm -e 1\" (FreeBSD) and see if \n" \ "that helps.\n") #define ERR_NO_SUPPORT _("Your platform is not supported! The battery\n" \ "monitor applet will not work on your system.\n") #define ERR_FREEBSD_ACPI _("There was an error reading information from " \ "the ACPI subsystem. Check to make sure the " \ "ACPI subsystem is properly loaded.") static const char *apm_readinfo (BatteryStatus *status); static int pm_initialised; #ifdef HAVE_HAL static int using_hal; #endif #ifdef HAVE_UPOWER static int using_upower; #endif /* * What follows is a series of platform-specific apm_readinfo functions * that take care of the quirks of getting battery information for different * platforms. Each function takes a BatteryStatus pointer and fills it * then returns a const char *. * * In the case of success, NULL is returned. In case of failure, a * localised error message is returned to give the user hints about what * the problem might be. This error message is not to be freed. */ /* Uncomment the following to enable a 'testing' backend. When you add the applet to the panel a window will appear that allows you to manually change the battery status values for testing purposes. NB: Be sure to unset this before committing!! */ /* #define BATTSTAT_TESTING_BACKEND */ #ifdef BATTSTAT_TESTING_BACKEND #include BatteryStatus test_status; static void test_update_boolean( GtkToggleButton *button, gboolean *value ) { *value = gtk_toggle_button_get_active( button ); } static void test_update_integer( GtkSpinButton *spin, gint *value ) { *value = gtk_spin_button_get_value_as_int( spin ); } static void initialise_test( void ) { GtkWidget *w; GtkBox *box; test_status.percent = 50; test_status.minutes = 180; test_status.present = TRUE; test_status.on_ac_power = FALSE; test_status.charging = FALSE; box = GTK_BOX( gtk_vbox_new( 5, FALSE ) ); gtk_box_pack_start( box, gtk_label_new( "percent" ), TRUE, TRUE, 0); w = gtk_spin_button_new_with_range( -1.0, 100.0, 1 ); gtk_spin_button_set_value( GTK_SPIN_BUTTON( w ), 50.0 ); g_signal_connect( G_OBJECT( w ), "value-changed", G_CALLBACK( test_update_integer ), &test_status.percent ); gtk_box_pack_start( box, w, TRUE, TRUE, 0 ); gtk_box_pack_start( box, gtk_label_new( "minutes" ), TRUE, TRUE, 0); w = gtk_spin_button_new_with_range( -1.0, 1000.0, 1 ); gtk_spin_button_set_value( GTK_SPIN_BUTTON( w ), 180.0 ); g_signal_connect( G_OBJECT( w ), "value-changed", G_CALLBACK( test_update_integer ), &test_status.minutes ); gtk_box_pack_start( box, w, TRUE, TRUE, 0); w = gtk_toggle_button_new_with_label( "on_ac_power" ); g_signal_connect( G_OBJECT( w ), "toggled", G_CALLBACK( test_update_boolean ), &test_status.on_ac_power ); gtk_box_pack_start( box, w, TRUE, TRUE, 0); w = gtk_toggle_button_new_with_label( "charging" ); g_signal_connect( G_OBJECT( w ), "toggled", G_CALLBACK( test_update_boolean ), &test_status.charging ); gtk_box_pack_start( box, w, TRUE, TRUE, 0); w = gtk_toggle_button_new_with_label( "present" ); gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( w ), TRUE ); g_signal_connect( G_OBJECT( w ), "toggled", G_CALLBACK( test_update_boolean ), &test_status.present ); gtk_box_pack_start( box, w, TRUE, TRUE, 0); w = gtk_window_new( GTK_WINDOW_TOPLEVEL ); gtk_container_add( GTK_CONTAINER( w ), GTK_WIDGET( box ) ); gtk_widget_show_all( w ); } static const char * apm_readinfo (BatteryStatus *status) { static int test_initialised; if( !test_initialised ) initialise_test(); test_initialised = 1; *status = test_status; return NULL; } #undef __linux__ #undef HAVE_HAL #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) #include #include "acpi-freebsd.h" static struct acpi_info acpiinfo; static gboolean using_acpi; static int acpi_count; static struct apm_info apminfo; #define APMDEVICE "/dev/apm" static const char * apm_readinfo (BatteryStatus *status) { int fd; if (DEBUG) g_print("apm_readinfo() (FreeBSD)\n"); if (using_acpi) { if (acpi_count <= 0) { acpi_count = 30; acpi_process_event(&acpiinfo); if (acpi_freebsd_read(&apminfo, &acpiinfo) == FALSE) return ERR_FREEBSD_ACPI; } acpi_count--; } else { /* This is how I read the information from the APM subsystem under FreeBSD. Each time this functions is called (once every second) the APM device is opened, read from and then closed. */ fd = open(APMDEVICE, O_RDONLY); if (fd == -1) { return ERR_OPEN_APMDEV; } if (ioctl(fd, APMIO_GETINFO, &apminfo) == -1) err(1, "ioctl(APMIO_GETINFO)"); close(fd); if(apminfo.ai_status == 0) return ERR_APM_E; } status->present = TRUE; status->on_ac_power = apminfo.ai_acline ? 1 : 0; status->percent = apminfo.ai_batt_life; status->charging = (apminfo.ai_batt_stat) ? TRUE : FALSE; if (using_acpi) status->minutes = apminfo.ai_batt_time; else status->minutes = (int) (apminfo.ai_batt_time/60.0); return NULL; } #elif defined(__NetBSD__) || defined(__OpenBSD__) #include #include #define APMDEVICE "/dev/apm" static const char * apm_readinfo (BatteryStatus *status) { /* Code for OpenBSD by Joe Ammond . Using the same procedure as for FreeBSD. */ struct apm_info apminfo; int fd; #if defined(__NetBSD__) if (DEBUG) g_print("apm_readinfo() (NetBSD)\n"); #else /* __OpenBSD__ */ if (DEBUG) g_print("apm_readinfo() (OpenBSD)\n"); #endif fd = open(APMDEVICE, O_RDONLY); if (fd == -1) { pm_initialised = 0; return ERR_OPEN_APMDEV; } if (ioctl(fd, APM_IOC_GETPOWER, &apminfo) == -1) err(1, "ioctl(APM_IOC_GETPOWER)"); close(fd); status->present = TRUE; status->on_ac_power = apminfo.ac_state ? 1 : 0; status->percent = apminfo.battery_life; status->charging = (apminfo.battery_state == 3) ? TRUE : FALSE; status->minutes = apminfo.minutes_left; return NULL; } #elif __linux__ #include #include "acpi-linux.h" static struct acpi_info acpiinfo; static gboolean using_acpi; static int acpi_count; static int acpiwatch; static struct apm_info apminfo; /* Declared in acpi-linux.c */ gboolean acpi_linux_read(struct apm_info *apminfo, struct acpi_info *acpiinfo); static gboolean acpi_callback (GIOChannel * chan, GIOCondition cond, gpointer data) { if (cond & (G_IO_ERR | G_IO_HUP)) { acpi_linux_cleanup(&acpiinfo); apminfo.battery_percentage = -1; return FALSE; } if (acpi_process_event(&acpiinfo)) { acpi_linux_read(&apminfo, &acpiinfo); } return TRUE; } static const char * apm_readinfo (BatteryStatus *status) { /* Code for Linux by Thomas Hood . apm_read() will read from /proc/... instead and we do not need to open the device ourselves. */ if (DEBUG) g_print("apm_readinfo() (Linux)\n"); /* ACPI support added by Lennart Poettering 10/27/2001 * Updated by David Moore 5/29/2003 to poll less and * use ACPI events. */ if (using_acpi && acpiinfo.event_fd >= 0) { if (acpi_count <= 0) { /* Only call this one out of 30 calls to apm_readinfo() (every 30 seconds) * since reading the ACPI system takes CPU cycles. */ acpi_count=30; acpi_linux_read(&apminfo, &acpiinfo); } acpi_count--; } /* If we lost the file descriptor with ACPI events, try to get it back. */ else if (using_acpi) { if (acpi_linux_init(&acpiinfo)) { acpiwatch = g_io_add_watch (acpiinfo.channel, G_IO_IN | G_IO_ERR | G_IO_HUP, acpi_callback, NULL); acpi_linux_read(&apminfo, &acpiinfo); } } else apm_read(&apminfo); status->present = TRUE; status->on_ac_power = apminfo.ac_line_status ? 1 : 0; status->percent = (guint) apminfo.battery_percentage; status->charging = (apminfo.battery_flags & 0x8) ? TRUE : FALSE; status->minutes = apminfo.battery_time; return NULL; } #else static const char * apm_readinfo (BatteryStatus *status) { status->present = FALSE; status->on_ac_power = 1; status->percent = 100; status->charging = FALSE; status->minutes = 0; return ERR_NO_SUPPORT; } #endif /* * End platform-specific code. */ /* * power_management_getinfo * * Main interface to the power management code. Fills 'status' for you so * you don't have to worry about platform-specific details. * * In the case of success, NULL is returned. In case of failure, a * localised error message is returned to give the user hints about what * the problem might be. This error message is not to be freed. */ const char * power_management_getinfo( BatteryStatus *status ) { const char *retval; if( !pm_initialised ) { status->on_ac_power = TRUE; status->minutes = -1; status->percent = 0; status->charging = FALSE; status->present = FALSE; return NULL; } #ifdef HAVE_UPOWER if( using_upower) { battstat_upower_get_battery_info( status ); return NULL; } #endif #ifdef HAVE_HAL if( using_hal ) { battstat_hal_get_battery_info( status ); return NULL; } #endif retval = apm_readinfo( status ); if(status->percent == -1) { status->percent = 0; status->present = FALSE; } if(status->percent > 100) status->percent = 100; if(status->percent == 100) status->charging = FALSE; if(!status->on_ac_power) status->charging = FALSE; return retval; } /* * power_management_initialise * * Initialise the power management code. Call this before you call anything * else. * * In the case of success, NULL is returned. In case of failure, a * localised error message is returned to give the user hints about what * the problem might be. This error message is not to be freed. */ const char * power_management_initialise (int no_hal, void (*callback) (void)) { char *err; err = g_strdup( ":(" ); #ifdef __linux__ struct stat statbuf; #endif #ifdef HAVE_UPOWER err = battstat_upower_initialise (callback); if( err == NULL ) /* UPOWER is up */ { pm_initialised = 1; using_upower = TRUE; return NULL; } else /* fallback to legacy methods */ g_free( err ); #endif #ifdef HAVE_HAL if(! no_hal ) { err = battstat_hal_initialise (callback); if( err == NULL) /* HAL is up */ { pm_initialised = 1; using_hal = TRUE; return NULL; } } /* fallback to legacy methods */ g_free( err ); #endif #ifdef __linux__ if (acpi_linux_init(&acpiinfo)) { using_acpi = TRUE; acpi_count = 0; } else using_acpi = FALSE; /* If neither ACPI nor APM could be read, but ACPI does seem to be * installed, warn the user how to get ACPI working. */ if (!using_acpi && (apm_exists() == 1) && (stat("/proc/acpi", &statbuf) == 0)) { using_acpi = TRUE; acpi_count = 0; return ERR_ACPID; } /* Watch for ACPI events and handle them immediately with acpi_callback(). */ if (using_acpi && acpiinfo.event_fd >= 0) { acpiwatch = g_io_add_watch (acpiinfo.channel, G_IO_IN | G_IO_ERR | G_IO_HUP, acpi_callback, NULL); } #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) if (acpi_freebsd_init(&acpiinfo)) { using_acpi = TRUE; acpi_count = 0; } else using_acpi = FALSE; #endif pm_initialised = 1; return NULL; } /* * power_management_cleanup * * Perform any cleanup that might be required. */ void power_management_cleanup( void ) { #ifdef HAVE_UPOWER if( using_upower) { battstat_upower_cleanup(); pm_initialised = 1; return; } #endif #ifdef HAVE_HAL if( using_hal ) { battstat_hal_cleanup(); pm_initialised = 1; return; } #endif #ifdef __linux__ if (using_acpi) { if (acpiwatch != 0) g_source_remove(acpiwatch); acpiwatch = 0; acpi_linux_cleanup(&acpiinfo); } #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) if (using_acpi) { acpi_freebsd_cleanup(&acpiinfo); } #endif pm_initialised = 0; } int power_management_using_upower( void) { #ifdef HAVE_UPOWER return using_upower; #else return 0; #endif } int power_management_using_hal( void ) { #ifdef HAVE_HAL return using_hal; #else return 0; #endif }