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KSysGuard, the KDE System Guard
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Copyright (c) 2011 David Naylor <naylor.b.david@gmail.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of version 2 or later of the GNU General Public
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License as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <dev/acpica/acpiio.h>
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#define TZ_MIB "hw.acpi.thermal.tz%i.temperature"
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#define TZ_MONITOR "acpi/thermal_zone/temp%i"
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#define BAT_CHARGE_MONITOR "acpi/battery/batt%i/batterycharge"
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#define BAT_CAPACITY_MONITOR "acpi/battery/batt%i/batterycapacity"
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#define BAT_REMAINING_MONITOR "acpi/battery/batt%i/remainingtime"
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#define BAT_VOLTAGE_MONITOR "acpi/battery/batt%i/batteryvoltage"
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#define BAT_RATE_MONITOR "acpi/battery/batt%i/batteryrate"
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#define BAT_UNIT(bat) (bat_bif[bat].bif.units ? "mA" : "mW")
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static int acpifd = -1;
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static int tz_temp[MAXTZ];
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static union acpi_battery_ioctl_arg bat_bif[MAXBAT], bat_bst[MAXBAT], bat_battinfo[MAXBAT];
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void initACPI(struct SensorModul *sm) {
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/* Assume thermal zones use hw.acpi.thermal.tz%i.temperature format */
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for (tz_cnt = 0; tz_cnt < MAXTZ; ++tz_cnt) {
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snprintf(name, TZ_MIB_LEN, TZ_MIB, tz_cnt);
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if (sysctlbyname(name, &tz_temp[tz_cnt], &len, NULL, 0))
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snprintf(name, BUF_LEN, TZ_MONITOR, tz_cnt + 1);
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registerMonitor(name, "float", printThermal, printThermalInfo, sm);
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if ((acpifd = open("/dev/acpi", O_RDONLY)) == -1) {
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log_error("unable to open /dev/acpi");
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for (bat_cnt = 0; bat_cnt < MAXBAT; ++bat_cnt) {
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bat_bif[bat_cnt].unit = bat_cnt;
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if (ioctl(acpifd, ACPIIO_BATT_GET_BIF, &bat_bif[bat_cnt]))
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snprintf(name, BUF_LEN, BAT_CHARGE_MONITOR, bat_cnt + 1);
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registerMonitor(name, "integer", printBatCharge, printBatChargeInfo, sm);
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snprintf(name, BUF_LEN, BAT_CAPACITY_MONITOR, bat_cnt + 1);
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registerMonitor(name, "integer", printBatCapacity, printBatCapacityInfo, sm);
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snprintf(name, BUF_LEN, BAT_REMAINING_MONITOR, bat_cnt + 1);
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registerMonitor(name, "integer", printBatRemaining, printBatRemainingInfo, sm);
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snprintf(name, BUF_LEN, BAT_VOLTAGE_MONITOR, bat_cnt + 1);
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registerMonitor(name, "integer", printBatVoltage, printBatVoltageInfo, sm);
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snprintf(name, BUF_LEN, BAT_RATE_MONITOR, bat_cnt + 1);
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registerMonitor(name, "integer", printBatRate, printBatRateInfo, sm);
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void exitACPI(void) {
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for (tz = 0; tz < tz_cnt; ++tz) {
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snprintf(name, BUF_LEN, TZ_MONITOR, tz + 1);
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for (bat = 0; bat < bat_cnt; ++bat) {
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snprintf(name, TZ_MIB_LEN, BAT_CHARGE_MONITOR, bat + 1);
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snprintf(name, BUF_LEN, BAT_CAPACITY_MONITOR, bat + 1);
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snprintf(name, BUF_LEN, BAT_REMAINING_MONITOR, bat + 1);
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snprintf(name, BUF_LEN, BAT_VOLTAGE_MONITOR, bat + 1);
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int updateACPI(void) {
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char name[TZ_MIB_LEN];
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for (tz = 0; tz < tz_cnt; ++tz) {
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snprintf(name, TZ_MIB_LEN, TZ_MIB, tz);
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sysctlbyname(name, &tz_temp[tz], &len, NULL, 0);
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for (bat = 0; bat < bat_cnt; ++bat) {
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bat_bst[bat].unit = bat;
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ioctl(acpifd, ACPIIO_BATT_GET_BST, &bat_bst[bat]);
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bat_battinfo[bat].unit = bat;
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ioctl(acpifd, ACPIIO_BATT_GET_BATTINFO, &bat_battinfo[bat]);
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void printThermal(const char *cmd) {
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sscanf(cmd + 22, "%i", &tz);
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fprintf(CurrentClient, "%f\n", (tz_temp[tz - 1] - 2732) / 10.0);
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void printThermalInfo(const char *cmd) {
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sscanf(cmd + 22, "%i", &tz);
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fprintf(CurrentClient, "ACPI Thermal Zone %i\t0\t0\tC\n", tz);
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void printBat(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "");
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void printBatCharge(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "%i\n", bat_bst[bat - 1].bst.cap);
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void printBatChargeInfo(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "Battery %i charge\t0\t%i\t%sh\n", bat, bat_bif[bat - 1].bif.dcap, BAT_UNIT(bat - 1));
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void printBatCapacity(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "%i\n", bat_battinfo[bat - 1].battinfo.cap);
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void printBatCapacityInfo(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "Battery %i capacity\t0\t100\t%%\n", bat);
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void printBatRemaining(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "%i\n", bat_battinfo[bat - 1].battinfo.min);
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void printBatRemainingInfo(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "Battery %i remaining time\t0\t0\tmin\n", bat);
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void printBatVoltage(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "%i\n", bat_bst[bat - 1].bst.volt);
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void printBatVoltageInfo(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "Battery %i voltage\t0\t%i\tmV\n", bat, bat_bif[bat - 1].bif.dvol);
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void printBatRate(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "%i\n", bat_bst[bat - 1].bst.rate);
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void printBatRateInfo(const char *cmd) {
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sscanf(cmd + 17, "%i", &bat);
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fprintf(CurrentClient, "Battery %i discharge rate\t0\t0\t%s\n", bat, BAT_UNIT(bat - 1));