X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fbattery.c;h=5c02fee235c624fc9b556d8581b884ced17b1146;hb=936c450a86c841eea89888c8550c9118fae90c25;hp=d921484dc74e410191aee2fbc08d37dddfc1db52;hpb=c1219a1c9db2e8400e2ee94b87f86ccd441485d5;p=collectd.git diff --git a/src/battery.c b/src/battery.c index d921484d..5c02fee2 100644 --- a/src/battery.c +++ b/src/battery.c @@ -1,7 +1,8 @@ /** * collectd - src/battery.c - * Copyright (C) 2006,2007 Florian octo Forster + * Copyright (C) 2006-2014 Florian octo Forster * Copyright (C) 2008 Michał Mirosław + * Copyright (C) 2014 Andy Parkins * * 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 @@ -17,521 +18,719 @@ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Authors: - * Florian octo Forster + * Florian octo Forster * Michał Mirosław + * Andy Parkins **/ #include "collectd.h" + #include "common.h" #include "plugin.h" -#include "utils_complain.h" - #if HAVE_MACH_MACH_TYPES_H -# include +#include #endif #if HAVE_MACH_MACH_INIT_H -# include +#include #endif #if HAVE_MACH_MACH_ERROR_H -# include +#include #endif #if HAVE_COREFOUNDATION_COREFOUNDATION_H -# include +#include #endif #if HAVE_IOKIT_IOKITLIB_H -# include +#include #endif #if HAVE_IOKIT_IOTYPES_H -# include +#include #endif #if HAVE_IOKIT_PS_IOPOWERSOURCES_H -# include +#include #endif #if HAVE_IOKIT_PS_IOPSKEYS_H -# include +#include #endif #if !HAVE_IOKIT_IOKITLIB_H && !HAVE_IOKIT_PS_IOPOWERSOURCES_H && !KERNEL_LINUX -# error "No applicable input method." +#error "No applicable input method." #endif -#define INVALID_VALUE 47841.29 - #if HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H - /* No global variables */ +/* No global variables */ /* #endif HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H */ #elif KERNEL_LINUX -static int battery_pmu_num = 0; -static char *battery_pmu_file = "/proc/pmu/battery_%i"; -static const char *battery_acpi_dir = "/proc/acpi/battery"; +#define PROC_PMU_PATH_FORMAT "/proc/pmu/battery_%i" +#define PROC_ACPI_PATH "/proc/acpi/battery" +#define PROC_ACPI_FACTOR 0.001 +#define SYSFS_PATH "/sys/class/power_supply" +#define SYSFS_FACTOR 0.000001 #endif /* KERNEL_LINUX */ -static int battery_init (void) -{ -#if HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H - /* No init neccessary */ -/* #endif HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H */ - -#elif KERNEL_LINUX - int len; - char filename[128]; - - for (battery_pmu_num = 0; ; battery_pmu_num++) - { - len = ssnprintf (filename, sizeof (filename), battery_pmu_file, battery_pmu_num); - - if ((len < 0) || ((unsigned int)len >= sizeof (filename))) - break; - - if (access (filename, R_OK)) - break; - } -#endif /* KERNEL_LINUX */ - - return (0); -} - -static void battery_submit (const char *plugin_instance, const char *type, double value) -{ - value_t values[1]; - value_list_t vl = VALUE_LIST_INIT; - - values[0].gauge = value; - - vl.values = values; - vl.values_len = 1; - sstrncpy (vl.host, hostname_g, sizeof (vl.host)); - sstrncpy (vl.plugin, "battery", sizeof (vl.plugin)); - sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance)); - sstrncpy (vl.type, type, sizeof (vl.type)); - - plugin_dispatch_values (&vl); -} /* void battery_submit */ +int battery_read_statefs( + void); /* defined in battery_statefs; used by StateFS backend */ + +static _Bool report_percent = 0; +static _Bool report_degraded = 0; +static _Bool query_statefs = 0; + +static void battery_submit2(char const *plugin_instance, /* {{{ */ + char const *type, char const *type_instance, + gauge_t value) { + value_list_t vl = VALUE_LIST_INIT; + + vl.values = &(value_t){.gauge = value}; + vl.values_len = 1; + sstrncpy(vl.plugin, "battery", sizeof(vl.plugin)); + sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance)); + sstrncpy(vl.type, type, sizeof(vl.type)); + if (type_instance != NULL) + sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance)); + + plugin_dispatch_values(&vl); +} /* }}} void battery_submit2 */ + +static void battery_submit(char const *plugin_instance, /* {{{ */ + char const *type, gauge_t value) { + battery_submit2(plugin_instance, type, NULL, value); +} /* }}} void battery_submit */ + +static void submit_capacity(char const *plugin_instance, /* {{{ */ + gauge_t capacity_charged, gauge_t capacity_full, + gauge_t capacity_design) { + if (report_percent && (capacity_charged > capacity_full)) + return; + if (report_degraded && (capacity_full > capacity_design)) + return; + + if (report_percent) { + gauge_t capacity_max; + + if (report_degraded) + capacity_max = capacity_design; + else + capacity_max = capacity_full; + + battery_submit2(plugin_instance, "percent", "charged", + 100.0 * capacity_charged / capacity_max); + battery_submit2(plugin_instance, "percent", "discharged", + 100.0 * (capacity_full - capacity_charged) / capacity_max); + + if (report_degraded) + battery_submit2(plugin_instance, "percent", "degraded", + 100.0 * (capacity_design - capacity_full) / capacity_max); + } else if (report_degraded) /* && !report_percent */ + { + battery_submit2(plugin_instance, "capacity", "charged", capacity_charged); + battery_submit2(plugin_instance, "capacity", "discharged", + (capacity_full - capacity_charged)); + battery_submit2(plugin_instance, "capacity", "degraded", + (capacity_design - capacity_full)); + } else /* !report_percent && !report_degraded */ + { + battery_submit(plugin_instance, "capacity", capacity_charged); + } +} /* }}} void submit_capacity */ #if HAVE_IOKIT_PS_IOPOWERSOURCES_H || HAVE_IOKIT_IOKITLIB_H -static double dict_get_double (CFDictionaryRef dict, char *key_string) +static double dict_get_double(CFDictionaryRef dict, + const char *key_string) /* {{{ */ { - double val_double; - long long val_int; - CFNumberRef val_obj; - CFStringRef key_obj; - - key_obj = CFStringCreateWithCString (kCFAllocatorDefault, key_string, - kCFStringEncodingASCII); - if (key_obj == NULL) - { - DEBUG ("CFStringCreateWithCString (%s) failed.\n", key_string); - return (INVALID_VALUE); - } - - if ((val_obj = CFDictionaryGetValue (dict, key_obj)) == NULL) - { - DEBUG ("CFDictionaryGetValue (%s) failed.", key_string); - CFRelease (key_obj); - return (INVALID_VALUE); - } - CFRelease (key_obj); - - if (CFGetTypeID (val_obj) == CFNumberGetTypeID ()) - { - if (CFNumberIsFloatType (val_obj)) - { - CFNumberGetValue (val_obj, - kCFNumberDoubleType, - &val_double); - } - else - { - CFNumberGetValue (val_obj, - kCFNumberLongLongType, - &val_int); - val_double = val_int; - } - } - else - { - DEBUG ("CFGetTypeID (val_obj) = %i", (int) CFGetTypeID (val_obj)); - return (INVALID_VALUE); - } - - return (val_double); -} -#endif /* HAVE_IOKIT_PS_IOPOWERSOURCES_H || HAVE_IOKIT_IOKITLIB_H */ + double val_double; + long long val_int; + CFNumberRef val_obj; + CFStringRef key_obj; + + key_obj = CFStringCreateWithCString(kCFAllocatorDefault, key_string, + kCFStringEncodingASCII); + if (key_obj == NULL) { + DEBUG("CFStringCreateWithCString (%s) failed.\n", key_string); + return (NAN); + } + + if ((val_obj = CFDictionaryGetValue(dict, key_obj)) == NULL) { + DEBUG("CFDictionaryGetValue (%s) failed.", key_string); + CFRelease(key_obj); + return (NAN); + } + CFRelease(key_obj); + + if (CFGetTypeID(val_obj) == CFNumberGetTypeID()) { + if (CFNumberIsFloatType(val_obj)) { + CFNumberGetValue(val_obj, kCFNumberDoubleType, &val_double); + } else { + CFNumberGetValue(val_obj, kCFNumberLongLongType, &val_int); + val_double = val_int; + } + } else { + DEBUG("CFGetTypeID (val_obj) = %i", (int)CFGetTypeID(val_obj)); + return (NAN); + } + + return (val_double); +} /* }}} double dict_get_double */ #if HAVE_IOKIT_PS_IOPOWERSOURCES_H -static void get_via_io_power_sources (double *ret_charge, - double *ret_current, - double *ret_voltage) -{ - CFTypeRef ps_raw; - CFArrayRef ps_array; - int ps_array_len; - CFDictionaryRef ps_dict; - CFTypeRef ps_obj; - - double temp_double; - int i; - - ps_raw = IOPSCopyPowerSourcesInfo (); - ps_array = IOPSCopyPowerSourcesList (ps_raw); - ps_array_len = CFArrayGetCount (ps_array); - - DEBUG ("ps_array_len == %i", ps_array_len); - - for (i = 0; i < ps_array_len; i++) - { - ps_obj = CFArrayGetValueAtIndex (ps_array, i); - ps_dict = IOPSGetPowerSourceDescription (ps_raw, ps_obj); - - if (ps_dict == NULL) - { - DEBUG ("IOPSGetPowerSourceDescription failed."); - continue; - } - - if (CFGetTypeID (ps_dict) != CFDictionaryGetTypeID ()) - { - DEBUG ("IOPSGetPowerSourceDescription did not return a CFDictionaryRef"); - continue; - } - - /* FIXME: Check if this is really an internal battery */ - - if (*ret_charge == INVALID_VALUE) - { - /* This is the charge in percent. */ - temp_double = dict_get_double (ps_dict, - kIOPSCurrentCapacityKey); - if ((temp_double != INVALID_VALUE) - && (temp_double >= 0.0) - && (temp_double <= 100.0)) - *ret_charge = temp_double; - } - - if (*ret_current == INVALID_VALUE) - { - temp_double = dict_get_double (ps_dict, - kIOPSCurrentKey); - if (temp_double != INVALID_VALUE) - *ret_current = temp_double / 1000.0; - } - - if (*ret_voltage == INVALID_VALUE) - { - temp_double = dict_get_double (ps_dict, - kIOPSVoltageKey); - if (temp_double != INVALID_VALUE) - *ret_voltage = temp_double / 1000.0; - } - } - - CFRelease(ps_array); - CFRelease(ps_raw); -} +static void get_via_io_power_sources(double *ret_charge, /* {{{ */ + double *ret_current, double *ret_voltage) { + CFTypeRef ps_raw; + CFArrayRef ps_array; + int ps_array_len; + CFDictionaryRef ps_dict; + CFTypeRef ps_obj; + + double temp_double; + + ps_raw = IOPSCopyPowerSourcesInfo(); + ps_array = IOPSCopyPowerSourcesList(ps_raw); + ps_array_len = CFArrayGetCount(ps_array); + + DEBUG("ps_array_len == %i", ps_array_len); + + for (int i = 0; i < ps_array_len; i++) { + ps_obj = CFArrayGetValueAtIndex(ps_array, i); + ps_dict = IOPSGetPowerSourceDescription(ps_raw, ps_obj); + + if (ps_dict == NULL) { + DEBUG("IOPSGetPowerSourceDescription failed."); + continue; + } + + if (CFGetTypeID(ps_dict) != CFDictionaryGetTypeID()) { + DEBUG("IOPSGetPowerSourceDescription did not return a CFDictionaryRef"); + continue; + } + + /* FIXME: Check if this is really an internal battery */ + + if (isnan(*ret_charge)) { + /* This is the charge in percent. */ + temp_double = dict_get_double(ps_dict, kIOPSCurrentCapacityKey); + if (!isnan((temp_double)) && (temp_double >= 0.0) && + (temp_double <= 100.0)) + *ret_charge = temp_double; + } + + if (isnan(*ret_current)) { + temp_double = dict_get_double(ps_dict, kIOPSCurrentKey); + if (!isnan(temp_double)) + *ret_current = temp_double / 1000.0; + } + + if (isnan(*ret_voltage)) { + temp_double = dict_get_double(ps_dict, kIOPSVoltageKey); + if (!isnan(temp_double)) + *ret_voltage = temp_double / 1000.0; + } + } + + CFRelease(ps_array); + CFRelease(ps_raw); +} /* }}} void get_via_io_power_sources */ #endif /* HAVE_IOKIT_PS_IOPOWERSOURCES_H */ #if HAVE_IOKIT_IOKITLIB_H -static void get_via_generic_iokit (double *ret_charge, - double *ret_current, - double *ret_voltage) -{ - kern_return_t status; - io_iterator_t iterator; - io_object_t io_obj; - - CFDictionaryRef bat_root_dict; - CFArrayRef bat_info_arry; - CFIndex bat_info_arry_len; - CFIndex bat_info_arry_pos; - CFDictionaryRef bat_info_dict; - - double temp_double; - - status = IOServiceGetMatchingServices (kIOMasterPortDefault, - IOServiceNameMatching ("battery"), - &iterator); - if (status != kIOReturnSuccess) - { - DEBUG ("IOServiceGetMatchingServices failed."); - return; - } - - while ((io_obj = IOIteratorNext (iterator))) - { - status = IORegistryEntryCreateCFProperties (io_obj, - (CFMutableDictionaryRef *) &bat_root_dict, - kCFAllocatorDefault, - kNilOptions); - if (status != kIOReturnSuccess) - { - DEBUG ("IORegistryEntryCreateCFProperties failed."); - continue; - } - - bat_info_arry = (CFArrayRef) CFDictionaryGetValue (bat_root_dict, - CFSTR ("IOBatteryInfo")); - if (bat_info_arry == NULL) - { - CFRelease (bat_root_dict); - continue; - } - bat_info_arry_len = CFArrayGetCount (bat_info_arry); - - for (bat_info_arry_pos = 0; - bat_info_arry_pos < bat_info_arry_len; - bat_info_arry_pos++) - { - bat_info_dict = (CFDictionaryRef) CFArrayGetValueAtIndex (bat_info_arry, bat_info_arry_pos); - - if (*ret_charge == INVALID_VALUE) - { - temp_double = dict_get_double (bat_info_dict, - "Capacity"); - if (temp_double != INVALID_VALUE) - *ret_charge = temp_double / 1000.0; - } - - if (*ret_current == INVALID_VALUE) - { - temp_double = dict_get_double (bat_info_dict, - "Current"); - if (temp_double != INVALID_VALUE) - *ret_current = temp_double / 1000.0; - } - - if (*ret_voltage == INVALID_VALUE) - { - temp_double = dict_get_double (bat_info_dict, - "Voltage"); - if (temp_double != INVALID_VALUE) - *ret_voltage = temp_double / 1000.0; - } - } - - CFRelease (bat_root_dict); - } - - IOObjectRelease (iterator); -} +static void get_via_generic_iokit(double *ret_capacity_full, /* {{{ */ + double *ret_capacity_design, + double *ret_current, double *ret_voltage) { + kern_return_t status; + io_iterator_t iterator; + io_object_t io_obj; + + CFDictionaryRef bat_root_dict; + CFArrayRef bat_info_arry; + CFIndex bat_info_arry_len; + CFDictionaryRef bat_info_dict; + + double temp_double; + + status = IOServiceGetMatchingServices( + kIOMasterPortDefault, IOServiceNameMatching("battery"), &iterator); + if (status != kIOReturnSuccess) { + DEBUG("IOServiceGetMatchingServices failed."); + return; + } + + while ((io_obj = IOIteratorNext(iterator))) { + status = IORegistryEntryCreateCFProperties( + io_obj, (CFMutableDictionaryRef *)&bat_root_dict, kCFAllocatorDefault, + kNilOptions); + if (status != kIOReturnSuccess) { + DEBUG("IORegistryEntryCreateCFProperties failed."); + continue; + } + + bat_info_arry = + (CFArrayRef)CFDictionaryGetValue(bat_root_dict, CFSTR("IOBatteryInfo")); + if (bat_info_arry == NULL) { + CFRelease(bat_root_dict); + continue; + } + bat_info_arry_len = CFArrayGetCount(bat_info_arry); + + for (CFIndex bat_info_arry_pos = 0; bat_info_arry_pos < bat_info_arry_len; + bat_info_arry_pos++) { + bat_info_dict = (CFDictionaryRef)CFArrayGetValueAtIndex( + bat_info_arry, bat_info_arry_pos); + + if (isnan(*ret_capacity_full)) { + temp_double = dict_get_double(bat_info_dict, "Capacity"); + *ret_capacity_full = temp_double / 1000.0; + } + + if (isnan(*ret_capacity_design)) { + temp_double = dict_get_double(bat_info_dict, "AbsoluteMaxCapacity"); + *ret_capacity_design = temp_double / 1000.0; + } + + if (isnan(*ret_current)) { + temp_double = dict_get_double(bat_info_dict, "Current"); + *ret_current = temp_double / 1000.0; + } + + if (isnan(*ret_voltage)) { + temp_double = dict_get_double(bat_info_dict, "Voltage"); + *ret_voltage = temp_double / 1000.0; + } + } + + CFRelease(bat_root_dict); + } + + IOObjectRelease(iterator); +} /* }}} void get_via_generic_iokit */ #endif /* HAVE_IOKIT_IOKITLIB_H */ -#if KERNEL_LINUX -static int battery_read_acpi (const char __attribute__((unused)) *dir, - const char *name, void __attribute__((unused)) *user_data) +static int battery_read(void) /* {{{ */ { - double current = INVALID_VALUE; - double voltage = INVALID_VALUE; - double charge = INVALID_VALUE; - double *valptr = NULL; - int charging = 0; - - char filename[256]; - FILE *fh; - - char buffer[1024]; - char *fields[8]; - int numfields; - char *endptr; - int len; - - len = ssnprintf (filename, sizeof (filename), "%s/%s/state", battery_acpi_dir, name); - - if ((len < 0) || ((unsigned int)len >= sizeof (filename))) - return -1; - - if ((fh = fopen (filename, "r")) == NULL) { - char errbuf[1024]; - ERROR ("Cannot open `%s': %s", filename, - sstrerror (errno, errbuf, sizeof (errbuf))); - return -1; - } - - /* - * [11:00] <@tokkee> $ cat /proc/acpi/battery/BAT1/state - * [11:00] <@tokkee> present: yes - * [11:00] <@tokkee> capacity state: ok - * [11:00] <@tokkee> charging state: charging - * [11:00] <@tokkee> present rate: 1724 mA - * [11:00] <@tokkee> remaining capacity: 4136 mAh - * [11:00] <@tokkee> present voltage: 12428 mV - */ - while (fgets (buffer, sizeof (buffer), fh) != NULL) - { - numfields = strsplit (buffer, fields, 8); - - if (numfields < 3) - continue; - - if ((strcmp (fields[0], "charging") == 0) - && (strcmp (fields[1], "state:") == 0)) - { - if (strcmp (fields[2], "charging") == 0) - charging = 1; - else - charging = 0; - continue; - } - - if ((strcmp (fields[0], "present") == 0) - && (strcmp (fields[1], "rate:") == 0)) - valptr = ¤t; - else if ((strcmp (fields[0], "remaining") == 0) - && (strcmp (fields[1], "capacity:") == 0)) - valptr = &charge; - else if ((strcmp (fields[0], "present") == 0) - && (strcmp (fields[1], "voltage:") == 0)) - valptr = &voltage; - else - continue; - - endptr = NULL; - errno = 0; - *valptr = strtod (fields[2], &endptr) / 1000.0; - - if ((fields[2] == endptr) || (errno != 0)) - *valptr = INVALID_VALUE; - } /* while (fgets (buffer, sizeof (buffer), fh) != NULL) */ - - fclose (fh); - - if ((current != INVALID_VALUE) && (charging == 0)) - current *= -1; - - if (charge != INVALID_VALUE) - battery_submit ("0", "charge", charge); - if (current != INVALID_VALUE) - battery_submit ("0", "current", current); - if (voltage != INVALID_VALUE) - battery_submit ("0", "voltage", voltage); - - return 0; -} -#endif /* KERNEL_LINUX */ + gauge_t current = NAN; /* Current in A */ + gauge_t voltage = NAN; /* Voltage in V */ + /* We only get the charged capacity as a percentage from + * IOPowerSources. IOKit, on the other hand, only reports the full + * capacity. We use the two to calculate the current charged capacity. */ + gauge_t charge_rel = NAN; /* Current charge in percent */ + gauge_t capacity_charged; /* Charged capacity */ + gauge_t capacity_full = NAN; /* Total capacity */ + gauge_t capacity_design = NAN; /* Full design capacity */ -static int battery_read (void) -{ -#if HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H - double charge = INVALID_VALUE; /* Current charge in Ah */ - double current = INVALID_VALUE; /* Current in A */ - double voltage = INVALID_VALUE; /* Voltage in V */ - - double charge_rel = INVALID_VALUE; /* Current charge in percent */ - double charge_abs = INVALID_VALUE; /* Total capacity */ + if (query_statefs) + return battery_read_statefs(); #if HAVE_IOKIT_PS_IOPOWERSOURCES_H - get_via_io_power_sources (&charge_rel, ¤t, &voltage); + get_via_io_power_sources(&charge_rel, ¤t, &voltage); #endif #if HAVE_IOKIT_IOKITLIB_H - get_via_generic_iokit (&charge_abs, ¤t, &voltage); + get_via_generic_iokit(&capacity_full, &capacity_design, ¤t, &voltage); #endif - if ((charge_rel != INVALID_VALUE) && (charge_abs != INVALID_VALUE)) - charge = charge_abs * charge_rel / 100.0; + capacity_charged = charge_rel * capacity_full / 100.0; + submit_capacity("0", capacity_charged, capacity_full, capacity_design); - if (charge != INVALID_VALUE) - battery_submit ("0", "charge", charge); - if (current != INVALID_VALUE) - battery_submit ("0", "current", current); - if (voltage != INVALID_VALUE) - battery_submit ("0", "voltage", voltage); + if (!isnan(current)) + battery_submit("0", "current", current); + if (!isnan(voltage)) + battery_submit("0", "voltage", voltage); + + return (0); +} /* }}} int battery_read */ /* #endif HAVE_IOKIT_IOKITLIB_H || HAVE_IOKIT_PS_IOPOWERSOURCES_H */ #elif KERNEL_LINUX - static c_complain_t acpi_dir_complaint = C_COMPLAIN_INIT_STATIC; - - FILE *fh; - char buffer[1024]; - char filename[256]; - - char *fields[8]; - int numfields; - - int i; - int len; - - for (i = 0; i < battery_pmu_num; i++) - { - char batnum_str[256]; - double current = INVALID_VALUE; - double voltage = INVALID_VALUE; - double charge = INVALID_VALUE; - double *valptr = NULL; - - len = ssnprintf (filename, sizeof (filename), battery_pmu_file, i); - if ((len < 0) || ((unsigned int)len >= sizeof (filename))) - continue; - - len = ssnprintf (batnum_str, sizeof (batnum_str), "%i", i); - if ((len < 0) || ((unsigned int)len >= sizeof (batnum_str))) - continue; - - if ((fh = fopen (filename, "r")) == NULL) - continue; - - while (fgets (buffer, sizeof (buffer), fh) != NULL) - { - numfields = strsplit (buffer, fields, 8); - - if (numfields < 3) - continue; - - if (strcmp ("current", fields[0]) == 0) - valptr = ¤t; - else if (strcmp ("voltage", fields[0]) == 0) - valptr = &voltage; - else if (strcmp ("charge", fields[0]) == 0) - valptr = &charge; - else - valptr = NULL; - - if (valptr != NULL) - { - char *endptr; - - endptr = NULL; - errno = 0; - - *valptr = strtod (fields[2], &endptr) / 1000.0; - - if ((fields[2] == endptr) || (errno != 0)) - *valptr = INVALID_VALUE; - } - } - - fclose (fh); - fh = NULL; - - if (charge != INVALID_VALUE) - battery_submit ("0", "charge", charge); - if (current != INVALID_VALUE) - battery_submit ("0", "current", current); - if (voltage != INVALID_VALUE) - battery_submit ("0", "voltage", voltage); - } - - if (0 == access (battery_acpi_dir, R_OK)) - walk_directory (battery_acpi_dir, battery_read_acpi, - /* user_data = */ NULL, - /* include hidden */ 0); - else - { - char errbuf[1024]; - c_complain_once (LOG_WARNING, &acpi_dir_complaint, - "battery plugin: Failed to access `%s': %s", - battery_acpi_dir, - sstrerror (errno, errbuf, sizeof (errbuf))); - } +/* Reads a file which contains only a number (and optionally a trailing + * newline) and parses that number. */ +static int sysfs_file_to_buffer(char const *dir, /* {{{ */ + char const *power_supply, char const *basename, + char *buffer, size_t buffer_size) { + char filename[PATH_MAX]; + int status; + + ssnprintf(filename, sizeof(filename), "%s/%s/%s", dir, power_supply, + basename); + + status = (int)read_file_contents(filename, buffer, buffer_size); + if (status < 0) + return status; + + strstripnewline(buffer); + return 0; +} /* }}} int sysfs_file_to_buffer */ + +/* Reads a file which contains only a number (and optionally a trailing + * newline) and parses that number. */ +static int sysfs_file_to_gauge(char const *dir, /* {{{ */ + char const *power_supply, char const *basename, + gauge_t *ret_value) { + int status; + char buffer[32] = ""; + + status = + sysfs_file_to_buffer(dir, power_supply, basename, buffer, sizeof(buffer)); + if (status != 0) + return (status); + + return (strtogauge(buffer, ret_value)); +} /* }}} sysfs_file_to_gauge */ + +static int read_sysfs_capacity(char const *dir, /* {{{ */ + char const *power_supply, + char const *plugin_instance) { + gauge_t capacity_charged = NAN; + gauge_t capacity_full = NAN; + gauge_t capacity_design = NAN; + int status; + + status = + sysfs_file_to_gauge(dir, power_supply, "energy_now", &capacity_charged); + if (status != 0) + return (status); + + status = + sysfs_file_to_gauge(dir, power_supply, "energy_full", &capacity_full); + if (status != 0) + return (status); + + status = sysfs_file_to_gauge(dir, power_supply, "energy_full_design", + &capacity_design); + if (status != 0) + return (status); + + submit_capacity(plugin_instance, capacity_charged * SYSFS_FACTOR, + capacity_full * SYSFS_FACTOR, capacity_design * SYSFS_FACTOR); + return (0); +} /* }}} int read_sysfs_capacity */ + +static int read_sysfs_callback(char const *dir, /* {{{ */ + char const *power_supply, void *user_data) { + int *battery_index = user_data; + + char const *plugin_instance; + char buffer[32]; + gauge_t v = NAN; + _Bool discharging = 0; + int status; + + /* Ignore non-battery directories, such as AC power. */ + status = + sysfs_file_to_buffer(dir, power_supply, "type", buffer, sizeof(buffer)); + if (status != 0) + return (0); + if (strcasecmp("Battery", buffer) != 0) + return (0); + + (void)sysfs_file_to_buffer(dir, power_supply, "status", buffer, + sizeof(buffer)); + if (strcasecmp("Discharging", buffer) == 0) + discharging = 1; + + /* FIXME: This is a dirty hack for backwards compatibility: The battery + * plugin, for a very long time, has had the plugin_instance + * hard-coded to "0". So, to keep backwards compatibility, we'll use + * "0" for the first battery we find and the power_supply name for all + * following. This should be reverted in a future major version. */ + plugin_instance = (*battery_index == 0) ? "0" : power_supply; + (*battery_index)++; + + read_sysfs_capacity(dir, power_supply, plugin_instance); + + if (sysfs_file_to_gauge(dir, power_supply, "power_now", &v) == 0) { + if (discharging) + v *= -1.0; + battery_submit(plugin_instance, "power", v * SYSFS_FACTOR); + } + if (sysfs_file_to_gauge(dir, power_supply, "current_now", &v) == 0) { + if (discharging) + v *= -1.0; + battery_submit(plugin_instance, "current", v * SYSFS_FACTOR); + } + + if (sysfs_file_to_gauge(dir, power_supply, "voltage_now", &v) == 0) + battery_submit(plugin_instance, "voltage", v * SYSFS_FACTOR); + + return (0); +} /* }}} int read_sysfs_callback */ + +static int read_sysfs(void) /* {{{ */ +{ + int status; + int battery_counter = 0; -#endif /* KERNEL_LINUX */ + if (access(SYSFS_PATH, R_OK) != 0) + return (ENOENT); + + status = walk_directory(SYSFS_PATH, read_sysfs_callback, + /* user_data = */ &battery_counter, + /* include hidden */ 0); + return (status); +} /* }}} int read_sysfs */ + +static int read_acpi_full_capacity(char const *dir, /* {{{ */ + char const *power_supply, + gauge_t *ret_capacity_full, + gauge_t *ret_capacity_design) + +{ + char filename[PATH_MAX]; + char buffer[1024]; + + FILE *fh; + + ssnprintf(filename, sizeof(filename), "%s/%s/info", dir, power_supply); + fh = fopen(filename, "r"); + if (fh == NULL) + return (errno); + + /* last full capacity: 40090 mWh */ + while (fgets(buffer, sizeof(buffer), fh) != NULL) { + gauge_t *value_ptr; + int fields_num; + char *fields[8]; + int index; + + if (strncmp("last full capacity:", buffer, strlen("last full capacity:")) == + 0) { + value_ptr = ret_capacity_full; + index = 3; + } else if (strncmp("design capacity:", buffer, + strlen("design capacity:")) == 0) { + value_ptr = ret_capacity_design; + index = 2; + } else { + continue; + } + + fields_num = strsplit(buffer, fields, STATIC_ARRAY_SIZE(fields)); + if (fields_num <= index) + continue; + + strtogauge(fields[index], value_ptr); + } + + fclose(fh); + return (0); +} /* }}} int read_acpi_full_capacity */ + +static int read_acpi_callback(char const *dir, /* {{{ */ + char const *power_supply, void *user_data) { + int *battery_index = user_data; + + gauge_t power = NAN; + gauge_t voltage = NAN; + gauge_t capacity_charged = NAN; + gauge_t capacity_full = NAN; + gauge_t capacity_design = NAN; + _Bool charging = 0; + _Bool is_current = 0; + + char const *plugin_instance; + char filename[PATH_MAX]; + char buffer[1024]; + + FILE *fh; + + ssnprintf(filename, sizeof(filename), "%s/%s/state", dir, power_supply); + fh = fopen(filename, "r"); + if (fh == NULL) { + if ((errno == EAGAIN) || (errno == EINTR) || (errno == ENOENT)) + return (0); + else + return (errno); + } + + /* + * [11:00] <@tokkee> $ cat /proc/acpi/battery/BAT1/state + * [11:00] <@tokkee> present: yes + * [11:00] <@tokkee> capacity state: ok + * [11:00] <@tokkee> charging state: charging + * [11:00] <@tokkee> present rate: 1724 mA + * [11:00] <@tokkee> remaining capacity: 4136 mAh + * [11:00] <@tokkee> present voltage: 12428 mV + */ + while (fgets(buffer, sizeof(buffer), fh) != NULL) { + char *fields[8]; + int numfields; + + numfields = strsplit(buffer, fields, STATIC_ARRAY_SIZE(fields)); + if (numfields < 3) + continue; + + if ((strcmp(fields[0], "charging") == 0) && + (strcmp(fields[1], "state:") == 0)) { + if (strcmp(fields[2], "charging") == 0) + charging = 1; + else + charging = 0; + continue; + } + + /* The unit of "present rate" depends on the battery. Modern + * batteries export power (watts), older batteries (used to) + * export current (amperes). We check the fourth column and try + * to find old batteries this way. */ + if ((strcmp(fields[0], "present") == 0) && + (strcmp(fields[1], "rate:") == 0)) { + strtogauge(fields[2], &power); + + if ((numfields >= 4) && (strcmp("mA", fields[3]) == 0)) + is_current = 1; + } else if ((strcmp(fields[0], "remaining") == 0) && + (strcmp(fields[1], "capacity:") == 0)) + strtogauge(fields[2], &capacity_charged); + else if ((strcmp(fields[0], "present") == 0) && + (strcmp(fields[1], "voltage:") == 0)) + strtogauge(fields[2], &voltage); + } /* while (fgets (buffer, sizeof (buffer), fh) != NULL) */ + + fclose(fh); + + if (!charging) + power *= -1.0; + + /* FIXME: This is a dirty hack for backwards compatibility: The battery + * plugin, for a very long time, has had the plugin_instance + * hard-coded to "0". So, to keep backwards compatibility, we'll use + * "0" for the first battery we find and the power_supply name for all + * following. This should be reverted in a future major version. */ + plugin_instance = (*battery_index == 0) ? "0" : power_supply; + (*battery_index)++; + + read_acpi_full_capacity(dir, power_supply, &capacity_full, &capacity_design); + + submit_capacity(plugin_instance, capacity_charged * PROC_ACPI_FACTOR, + capacity_full * PROC_ACPI_FACTOR, + capacity_design * PROC_ACPI_FACTOR); + + battery_submit(plugin_instance, is_current ? "current" : "power", + power * PROC_ACPI_FACTOR); + battery_submit(plugin_instance, "voltage", voltage * PROC_ACPI_FACTOR); + + return 0; +} /* }}} int read_acpi_callback */ + +static int read_acpi(void) /* {{{ */ +{ + int status; + int battery_counter = 0; + + if (access(PROC_ACPI_PATH, R_OK) != 0) + return (ENOENT); - return (0); -} + status = walk_directory(PROC_ACPI_PATH, read_acpi_callback, + /* user_data = */ &battery_counter, + /* include hidden */ 0); + return (status); +} /* }}} int read_acpi */ -void module_register (void) +static int read_pmu(void) /* {{{ */ +{ + int i = 0; + /* The upper limit here is just a safeguard. If there is a system with + * more than 100 batteries, this can easily be increased. */ + for (; i < 100; i++) { + FILE *fh; + + char buffer[1024]; + char filename[PATH_MAX]; + char plugin_instance[DATA_MAX_NAME_LEN]; + + gauge_t current = NAN; + gauge_t voltage = NAN; + gauge_t charge = NAN; + + ssnprintf(filename, sizeof(filename), PROC_PMU_PATH_FORMAT, i); + if (access(filename, R_OK) != 0) + break; + + ssnprintf(plugin_instance, sizeof(plugin_instance), "%i", i); + + fh = fopen(filename, "r"); + if (fh == NULL) { + if (errno == ENOENT) + break; + else if ((errno == EAGAIN) || (errno == EINTR)) + continue; + else + return (errno); + } + + while (fgets(buffer, sizeof(buffer), fh) != NULL) { + char *fields[8]; + int numfields; + + numfields = strsplit(buffer, fields, STATIC_ARRAY_SIZE(fields)); + if (numfields < 3) + continue; + + if (strcmp("current", fields[0]) == 0) + strtogauge(fields[2], ¤t); + else if (strcmp("voltage", fields[0]) == 0) + strtogauge(fields[2], &voltage); + else if (strcmp("charge", fields[0]) == 0) + strtogauge(fields[2], &charge); + } + + fclose(fh); + fh = NULL; + + battery_submit(plugin_instance, "charge", charge / 1000.0); + battery_submit(plugin_instance, "current", current / 1000.0); + battery_submit(plugin_instance, "voltage", voltage / 1000.0); + } + + if (i == 0) + return (ENOENT); + return (0); +} /* }}} int read_pmu */ + +static int battery_read(void) /* {{{ */ { - plugin_register_init ("battery", battery_init); - plugin_register_read ("battery", battery_read); + int status; + + if (query_statefs) + return battery_read_statefs(); + + DEBUG("battery plugin: Trying sysfs ..."); + status = read_sysfs(); + if (status == 0) + return (0); + + DEBUG("battery plugin: Trying acpi ..."); + status = read_acpi(); + if (status == 0) + return (0); + + DEBUG("battery plugin: Trying pmu ..."); + status = read_pmu(); + if (status == 0) + return (0); + + ERROR("battery plugin: All available input methods failed."); + return (-1); +} /* }}} int battery_read */ +#endif /* KERNEL_LINUX */ + +static int battery_config(oconfig_item_t *ci) { + for (int i = 0; i < ci->children_num; i++) { + oconfig_item_t *child = ci->children + i; + + if (strcasecmp("ValuesPercentage", child->key) == 0) + cf_util_get_boolean(child, &report_percent); + else if (strcasecmp("ReportDegraded", child->key) == 0) + cf_util_get_boolean(child, &report_degraded); + else if (strcasecmp("QueryStateFS", child->key) == 0) + cf_util_get_boolean(child, &query_statefs); + else + WARNING("battery plugin: Ignoring unknown " + "configuration option \"%s\".", + child->key); + } + + return (0); +} /* }}} int battery_config */ + +void module_register(void) { + plugin_register_complex_config("battery", battery_config); + plugin_register_read("battery", battery_read); } /* void module_register */