mirror of https://github.com/htop-dev/htop.git
1103 lines
32 KiB
C
1103 lines
32 KiB
C
/*
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htop - linux/Platform.c
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(C) 2014 Hisham H. Muhammad
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Released under the GNU GPLv2+, see the COPYING file
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in the source distribution for its full text.
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*/
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#include "config.h" // IWYU pragma: keep
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#include "linux/Platform.h"
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <math.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/sysmacros.h>
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#include "BatteryMeter.h"
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#include "ClockMeter.h"
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#include "Compat.h"
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#include "CPUMeter.h"
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#include "DateMeter.h"
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#include "DateTimeMeter.h"
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#include "DiskIOMeter.h"
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#include "FileDescriptorMeter.h"
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#include "HostnameMeter.h"
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#include "HugePageMeter.h"
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#include "LoadAverageMeter.h"
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#include "Machine.h"
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#include "Macros.h"
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#include "MainPanel.h"
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#include "Meter.h"
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#include "MemoryMeter.h"
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#include "MemorySwapMeter.h"
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#include "NetworkIOMeter.h"
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#include "Object.h"
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#include "Panel.h"
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#include "PressureStallMeter.h"
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#include "ProvideCurses.h"
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#include "Settings.h"
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#include "SwapMeter.h"
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#include "SysArchMeter.h"
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#include "TasksMeter.h"
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#include "UptimeMeter.h"
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#include "XUtils.h"
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#include "linux/GPUMeter.h"
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#include "linux/IOPriority.h"
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#include "linux/IOPriorityPanel.h"
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#include "linux/LinuxMachine.h"
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#include "linux/LinuxProcess.h"
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#include "linux/SELinuxMeter.h"
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#include "linux/SystemdMeter.h"
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#include "linux/ZramMeter.h"
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#include "linux/ZramStats.h"
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#include "linux/ZswapStats.h"
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#include "zfs/ZfsArcMeter.h"
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#include "zfs/ZfsArcStats.h"
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#include "zfs/ZfsCompressedArcMeter.h"
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#ifdef HAVE_LIBCAP
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#include <sys/capability.h>
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#endif
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#ifdef HAVE_SENSORS_SENSORS_H
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#include "LibSensors.h"
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#endif
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#ifndef O_PATH
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#define O_PATH 010000000 // declare for ancient glibc versions
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#endif
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#ifdef HAVE_LIBCAP
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enum CapMode {
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CAP_MODE_OFF,
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CAP_MODE_BASIC,
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CAP_MODE_STRICT
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};
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#endif
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bool Running_containerized = false;
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const ScreenDefaults Platform_defaultScreens[] = {
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{
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.name = "Main",
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.columns = "PID USER PRIORITY NICE M_VIRT M_RESIDENT M_SHARE STATE PERCENT_CPU PERCENT_MEM TIME Command",
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.sortKey = "PERCENT_CPU",
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},
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{
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.name = "I/O",
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.columns = "PID USER IO_PRIORITY IO_RATE IO_READ_RATE IO_WRITE_RATE PERCENT_SWAP_DELAY PERCENT_IO_DELAY Command",
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.sortKey = "IO_RATE",
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},
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};
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const unsigned int Platform_numberOfDefaultScreens = ARRAYSIZE(Platform_defaultScreens);
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const SignalItem Platform_signals[] = {
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{ .name = " 0 Cancel", .number = 0 },
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{ .name = " 1 SIGHUP", .number = 1 },
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{ .name = " 2 SIGINT", .number = 2 },
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{ .name = " 3 SIGQUIT", .number = 3 },
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{ .name = " 4 SIGILL", .number = 4 },
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{ .name = " 5 SIGTRAP", .number = 5 },
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{ .name = " 6 SIGABRT", .number = 6 },
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{ .name = " 6 SIGIOT", .number = 6 },
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{ .name = " 7 SIGBUS", .number = 7 },
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{ .name = " 8 SIGFPE", .number = 8 },
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{ .name = " 9 SIGKILL", .number = 9 },
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{ .name = "10 SIGUSR1", .number = 10 },
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{ .name = "11 SIGSEGV", .number = 11 },
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{ .name = "12 SIGUSR2", .number = 12 },
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{ .name = "13 SIGPIPE", .number = 13 },
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{ .name = "14 SIGALRM", .number = 14 },
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{ .name = "15 SIGTERM", .number = 15 },
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{ .name = "16 SIGSTKFLT", .number = 16 },
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{ .name = "17 SIGCHLD", .number = 17 },
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{ .name = "18 SIGCONT", .number = 18 },
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{ .name = "19 SIGSTOP", .number = 19 },
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{ .name = "20 SIGTSTP", .number = 20 },
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{ .name = "21 SIGTTIN", .number = 21 },
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{ .name = "22 SIGTTOU", .number = 22 },
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{ .name = "23 SIGURG", .number = 23 },
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{ .name = "24 SIGXCPU", .number = 24 },
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{ .name = "25 SIGXFSZ", .number = 25 },
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{ .name = "26 SIGVTALRM", .number = 26 },
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{ .name = "27 SIGPROF", .number = 27 },
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{ .name = "28 SIGWINCH", .number = 28 },
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{ .name = "29 SIGIO", .number = 29 },
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{ .name = "29 SIGPOLL", .number = 29 },
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{ .name = "30 SIGPWR", .number = 30 },
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{ .name = "31 SIGSYS", .number = 31 },
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};
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const unsigned int Platform_numberOfSignals = ARRAYSIZE(Platform_signals);
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static enum { BAT_PROC, BAT_SYS, BAT_ERR } Platform_Battery_method = BAT_PROC;
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static time_t Platform_Battery_cacheTime;
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static double Platform_Battery_cachePercent = NAN;
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static ACPresence Platform_Battery_cacheIsOnAC;
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#ifdef HAVE_LIBCAP
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static enum CapMode Platform_capabilitiesMode = CAP_MODE_BASIC;
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#endif
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static Htop_Reaction Platform_actionSetIOPriority(State* st) {
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if (Settings_isReadonly())
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return HTOP_OK;
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const LinuxProcess* p = (const LinuxProcess*) Panel_getSelected((Panel*)st->mainPanel);
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if (!p)
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return HTOP_OK;
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IOPriority ioprio1 = p->ioPriority;
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Panel* ioprioPanel = IOPriorityPanel_new(ioprio1);
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const void* set = Action_pickFromVector(st, ioprioPanel, 20, true);
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if (set) {
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IOPriority ioprio2 = IOPriorityPanel_getIOPriority(ioprioPanel);
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bool ok = MainPanel_foreachRow(st->mainPanel, LinuxProcess_rowSetIOPriority, (Arg) { .i = ioprio2 }, NULL);
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if (!ok) {
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beep();
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}
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}
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Panel_delete((Object*)ioprioPanel);
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return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
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}
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static bool Platform_changeAutogroupPriority(MainPanel* panel, int delta) {
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if (LinuxProcess_isAutogroupEnabled() == false) {
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beep();
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return false;
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}
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bool anyTagged;
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bool ok = MainPanel_foreachRow(panel, LinuxProcess_rowChangeAutogroupPriorityBy, (Arg) { .i = delta }, &anyTagged);
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if (!ok)
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beep();
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return anyTagged;
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}
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static Htop_Reaction Platform_actionHigherAutogroupPriority(State* st) {
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if (Settings_isReadonly())
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return HTOP_OK;
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bool changed = Platform_changeAutogroupPriority(st->mainPanel, -1);
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return changed ? HTOP_REFRESH : HTOP_OK;
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}
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static Htop_Reaction Platform_actionLowerAutogroupPriority(State* st) {
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if (Settings_isReadonly())
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return HTOP_OK;
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bool changed = Platform_changeAutogroupPriority(st->mainPanel, 1);
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return changed ? HTOP_REFRESH : HTOP_OK;
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}
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void Platform_setBindings(Htop_Action* keys) {
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keys['i'] = Platform_actionSetIOPriority;
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keys['{'] = Platform_actionLowerAutogroupPriority;
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keys['}'] = Platform_actionHigherAutogroupPriority;
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keys[KEY_F(19)] = Platform_actionLowerAutogroupPriority; // Shift-F7
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keys[KEY_F(20)] = Platform_actionHigherAutogroupPriority; // Shift-F8
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}
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const MeterClass* const Platform_meterTypes[] = {
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&CPUMeter_class,
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&ClockMeter_class,
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&DateMeter_class,
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&DateTimeMeter_class,
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&LoadAverageMeter_class,
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&LoadMeter_class,
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&MemoryMeter_class,
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&SwapMeter_class,
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&MemorySwapMeter_class,
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&SysArchMeter_class,
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&HugePageMeter_class,
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&TasksMeter_class,
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&UptimeMeter_class,
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&BatteryMeter_class,
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&HostnameMeter_class,
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&AllCPUsMeter_class,
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&AllCPUs2Meter_class,
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&AllCPUs4Meter_class,
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&AllCPUs8Meter_class,
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&LeftCPUsMeter_class,
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&RightCPUsMeter_class,
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&LeftCPUs2Meter_class,
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&RightCPUs2Meter_class,
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&LeftCPUs4Meter_class,
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&RightCPUs4Meter_class,
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&LeftCPUs8Meter_class,
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&RightCPUs8Meter_class,
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&BlankMeter_class,
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&PressureStallCPUSomeMeter_class,
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&PressureStallIOSomeMeter_class,
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&PressureStallIOFullMeter_class,
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&PressureStallIRQFullMeter_class,
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&PressureStallMemorySomeMeter_class,
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&PressureStallMemoryFullMeter_class,
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&ZfsArcMeter_class,
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&ZfsCompressedArcMeter_class,
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&ZramMeter_class,
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&DiskIOMeter_class,
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&NetworkIOMeter_class,
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&SELinuxMeter_class,
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&SystemdMeter_class,
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&SystemdUserMeter_class,
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&FileDescriptorMeter_class,
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&GPUMeter_class,
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NULL
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};
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int Platform_getUptime(void) {
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char uptimedata[64] = {0};
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ssize_t uptimeread = xReadfile(PROCDIR "/uptime", uptimedata, sizeof(uptimedata));
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if (uptimeread < 1) {
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return 0;
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}
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double uptime = 0;
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double idle = 0;
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int n = sscanf(uptimedata, "%lf %lf", &uptime, &idle);
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if (n != 2) {
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return 0;
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}
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return floor(uptime);
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}
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void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
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char loaddata[128] = {0};
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*one = NAN;
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*five = NAN;
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*fifteen = NAN;
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ssize_t loadread = xReadfile(PROCDIR "/loadavg", loaddata, sizeof(loaddata));
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if (loadread < 1)
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return;
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double scanOne = NAN;
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double scanFive = NAN;
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double scanFifteen = NAN;
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int r = sscanf(loaddata, "%lf %lf %lf", &scanOne, &scanFive, &scanFifteen);
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if (r != 3)
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return;
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*one = scanOne;
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*five = scanFive;
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*fifteen = scanFifteen;
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}
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pid_t Platform_getMaxPid(void) {
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char piddata[32] = {0};
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ssize_t pidread = xReadfile(PROCDIR "/sys/kernel/pid_max", piddata, sizeof(piddata));
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if (pidread < 1)
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goto err;
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int pidmax = 0;
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int match = sscanf(piddata, "%32d", &pidmax);
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if (match != 1)
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goto err;
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return pidmax;
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err:
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return 0x3FFFFF; // 4194303
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}
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double Platform_setCPUValues(Meter* this, unsigned int cpu) {
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const LinuxMachine* lhost = (const LinuxMachine*) this->host;
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const Settings* settings = this->host->settings;
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const CPUData* cpuData = &(lhost->cpuData[cpu]);
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double total = (double) ( cpuData->totalPeriod == 0 ? 1 : cpuData->totalPeriod);
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double percent;
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double* v = this->values;
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if (!cpuData->online) {
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this->curItems = 0;
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return NAN;
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}
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v[CPU_METER_NICE] = cpuData->nicePeriod / total * 100.0;
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v[CPU_METER_NORMAL] = cpuData->userPeriod / total * 100.0;
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if (settings->detailedCPUTime) {
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v[CPU_METER_KERNEL] = cpuData->systemPeriod / total * 100.0;
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v[CPU_METER_IRQ] = cpuData->irqPeriod / total * 100.0;
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v[CPU_METER_SOFTIRQ] = cpuData->softIrqPeriod / total * 100.0;
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this->curItems = 5;
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v[CPU_METER_STEAL] = cpuData->stealPeriod / total * 100.0;
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v[CPU_METER_GUEST] = cpuData->guestPeriod / total * 100.0;
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if (settings->accountGuestInCPUMeter) {
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this->curItems = 7;
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}
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v[CPU_METER_IOWAIT] = cpuData->ioWaitPeriod / total * 100.0;
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} else {
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v[CPU_METER_KERNEL] = cpuData->systemAllPeriod / total * 100.0;
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v[CPU_METER_IRQ] = (cpuData->stealPeriod + cpuData->guestPeriod) / total * 100.0;
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this->curItems = 4;
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}
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percent = sumPositiveValues(v, this->curItems);
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percent = MINIMUM(percent, 100.0);
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if (settings->detailedCPUTime) {
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this->curItems = 8;
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}
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v[CPU_METER_FREQUENCY] = cpuData->frequency;
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#ifdef HAVE_SENSORS_SENSORS_H
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v[CPU_METER_TEMPERATURE] = cpuData->temperature;
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#else
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v[CPU_METER_TEMPERATURE] = NAN;
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#endif
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return percent;
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}
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void Platform_setMemoryValues(Meter* this) {
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const Machine* host = this->host;
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const LinuxMachine* lhost = (const LinuxMachine*) host;
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this->total = host->totalMem;
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this->values[MEMORY_METER_USED] = host->usedMem;
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this->values[MEMORY_METER_SHARED] = host->sharedMem;
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this->values[MEMORY_METER_COMPRESSED] = 0; /* compressed */
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this->values[MEMORY_METER_BUFFERS] = host->buffersMem;
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this->values[MEMORY_METER_CACHE] = host->cachedMem;
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this->values[MEMORY_METER_AVAILABLE] = host->availableMem;
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if (lhost->zfs.enabled != 0 && !Running_containerized) {
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// ZFS does not shrink below the value of zfs_arc_min.
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unsigned long long int shrinkableSize = 0;
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if (lhost->zfs.size > lhost->zfs.min)
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shrinkableSize = lhost->zfs.size - lhost->zfs.min;
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this->values[MEMORY_METER_USED] -= shrinkableSize;
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this->values[MEMORY_METER_CACHE] += shrinkableSize;
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this->values[MEMORY_METER_AVAILABLE] += shrinkableSize;
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}
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if (lhost->zswap.usedZswapOrig > 0 || lhost->zswap.usedZswapComp > 0) {
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this->values[MEMORY_METER_USED] -= lhost->zswap.usedZswapComp;
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this->values[MEMORY_METER_COMPRESSED] += lhost->zswap.usedZswapComp;
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}
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}
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void Platform_setSwapValues(Meter* this) {
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const Machine* host = this->host;
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const LinuxMachine* lhost = (const LinuxMachine*) host;
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this->total = host->totalSwap;
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this->values[SWAP_METER_USED] = host->usedSwap;
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this->values[SWAP_METER_CACHE] = host->cachedSwap;
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this->values[SWAP_METER_FRONTSWAP] = 0; /* frontswap -- memory that is accounted to swap but resides elsewhere */
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if (lhost->zswap.usedZswapOrig > 0 || lhost->zswap.usedZswapComp > 0) {
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/*
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* FIXME: Zswapped pages can be both SwapUsed and SwapCached, and we do not know which.
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*
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* Apparently, it is possible that Zswapped > SwapUsed. This means that some of Zswapped pages
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* were actually SwapCached, nor SwapUsed. Unfortunately, we cannot tell what exactly portion
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* of Zswapped pages were SwapCached.
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*
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* For now, subtract Zswapped from SwapUsed and only if Zswapped > SwapUsed, subtract the
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* overflow from SwapCached.
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*/
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this->values[SWAP_METER_USED] -= lhost->zswap.usedZswapOrig;
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if (this->values[SWAP_METER_USED] < 0) {
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/* subtract the overflow from SwapCached */
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this->values[SWAP_METER_CACHE] += this->values[SWAP_METER_USED];
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this->values[SWAP_METER_USED] = 0;
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}
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this->values[SWAP_METER_FRONTSWAP] += lhost->zswap.usedZswapOrig;
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}
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}
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void Platform_setZramValues(Meter* this) {
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const LinuxMachine* lhost = (const LinuxMachine*) this->host;
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this->total = lhost->zram.totalZram;
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this->values[ZRAM_METER_COMPRESSED] = lhost->zram.usedZramComp;
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this->values[ZRAM_METER_UNCOMPRESSED] = lhost->zram.usedZramOrig - lhost->zram.usedZramComp;
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}
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void Platform_setZfsArcValues(Meter* this) {
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const LinuxMachine* lhost = (const LinuxMachine*) this->host;
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ZfsArcMeter_readStats(this, &(lhost->zfs));
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}
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void Platform_setZfsCompressedArcValues(Meter* this) {
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const LinuxMachine* lhost = (const LinuxMachine*) this->host;
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ZfsCompressedArcMeter_readStats(this, &(lhost->zfs));
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}
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char* Platform_getProcessEnv(pid_t pid) {
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char procname[128];
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xSnprintf(procname, sizeof(procname), PROCDIR "/%d/environ", pid);
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FILE* fp = fopen(procname, "r");
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if (!fp)
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return NULL;
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char* env = NULL;
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size_t capacity = 0;
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size_t size = 0;
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ssize_t bytes = 0;
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do {
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size += bytes;
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capacity += 4096;
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env = xRealloc(env, capacity);
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} while ((bytes = fread(env + size, 1, capacity - size, fp)) > 0);
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fclose(fp);
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|
|
if (bytes < 0) {
|
|
free(env);
|
|
return NULL;
|
|
}
|
|
|
|
size += bytes;
|
|
|
|
env = xRealloc(env, size + 2);
|
|
|
|
env[size] = '\0';
|
|
env[size + 1] = '\0';
|
|
|
|
return env;
|
|
}
|
|
|
|
FileLocks_ProcessData* Platform_getProcessLocks(pid_t pid) {
|
|
FileLocks_ProcessData* pdata = xCalloc(1, sizeof(FileLocks_ProcessData));
|
|
DIR* dirp;
|
|
int dfd;
|
|
|
|
char path[PATH_MAX];
|
|
xSnprintf(path, sizeof(path), PROCDIR "/%d/fdinfo/", pid);
|
|
if (strlen(path) >= (sizeof(path) - 2))
|
|
goto err;
|
|
|
|
if (!(dirp = opendir(path)))
|
|
goto err;
|
|
|
|
if ((dfd = dirfd(dirp)) == -1) {
|
|
closedir(dirp);
|
|
goto err;
|
|
}
|
|
|
|
FileLocks_LockData** data_ref = &pdata->locks;
|
|
for (struct dirent* de; (de = readdir(dirp)); ) {
|
|
if (String_eq(de->d_name, ".") || String_eq(de->d_name, ".."))
|
|
continue;
|
|
|
|
errno = 0;
|
|
char* end = de->d_name;
|
|
int file = strtoull(de->d_name, &end, 10);
|
|
if (errno || *end)
|
|
continue;
|
|
|
|
int fd = openat(dfd, de->d_name, O_RDONLY | O_CLOEXEC);
|
|
if (fd == -1)
|
|
continue;
|
|
FILE* fp = fdopen(fd, "r");
|
|
if (!fp) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
|
|
for (char buffer[1024]; fgets(buffer, sizeof(buffer), fp); ) {
|
|
if (!strchr(buffer, '\n'))
|
|
continue;
|
|
|
|
if (!String_startsWith(buffer, "lock:\t"))
|
|
continue;
|
|
|
|
FileLocks_Data data = {.fd = file};
|
|
int _;
|
|
unsigned int maj, min;
|
|
char lock_end[25], locktype[32], exclusive[32], readwrite[32];
|
|
if (10 != sscanf(buffer + strlen("lock:\t"), "%d: %31s %31s %31s %d %x:%x:%"PRIu64" %"PRIu64" %24s",
|
|
&_, locktype, exclusive, readwrite, &_,
|
|
&maj, &min, &data.inode,
|
|
&data.start, lock_end))
|
|
continue;
|
|
|
|
data.locktype = xStrdup(locktype);
|
|
data.exclusive = xStrdup(exclusive);
|
|
data.readwrite = xStrdup(readwrite);
|
|
data.dev = makedev(maj, min);
|
|
|
|
if (String_eq(lock_end, "EOF"))
|
|
data.end = ULLONG_MAX;
|
|
else
|
|
data.end = strtoull(lock_end, NULL, 10);
|
|
|
|
xSnprintf(path, sizeof(path), PROCDIR "/%d/fd/%s", pid, de->d_name);
|
|
char link[PATH_MAX];
|
|
ssize_t link_len;
|
|
if (strlen(path) < (sizeof(path) - 2) && (link_len = readlink(path, link, sizeof(link))) != -1)
|
|
data.filename = xStrndup(link, link_len);
|
|
|
|
*data_ref = xCalloc(1, sizeof(FileLocks_LockData));
|
|
(*data_ref)->data = data;
|
|
data_ref = &(*data_ref)->next;
|
|
}
|
|
|
|
fclose(fp);
|
|
}
|
|
|
|
closedir(dirp);
|
|
return pdata;
|
|
|
|
err:
|
|
pdata->error = true;
|
|
return pdata;
|
|
}
|
|
|
|
void Platform_getPressureStall(const char* file, bool some, double* ten, double* sixty, double* threehundred) {
|
|
*ten = *sixty = *threehundred = 0;
|
|
char procname[128];
|
|
xSnprintf(procname, sizeof(procname), PROCDIR "/pressure/%s", file);
|
|
FILE* fp = fopen(procname, "r");
|
|
if (!fp) {
|
|
*ten = *sixty = *threehundred = NAN;
|
|
return;
|
|
}
|
|
int total = fscanf(fp, "some avg10=%32lf avg60=%32lf avg300=%32lf total=%*f ", ten, sixty, threehundred);
|
|
if (!some) {
|
|
total = fscanf(fp, "full avg10=%32lf avg60=%32lf avg300=%32lf total=%*f ", ten, sixty, threehundred);
|
|
}
|
|
(void) total;
|
|
assert(total == 3);
|
|
fclose(fp);
|
|
}
|
|
|
|
void Platform_getFileDescriptors(double* used, double* max) {
|
|
char buffer[128] = {0};
|
|
|
|
*used = NAN;
|
|
*max = 65536;
|
|
|
|
ssize_t fdread = xReadfile(PROCDIR "/sys/fs/file-nr", buffer, sizeof(buffer));
|
|
if (fdread < 1)
|
|
return;
|
|
|
|
unsigned long long v1, v2, v3;
|
|
int total = sscanf(buffer, "%llu %llu %llu", &v1, &v2, &v3);
|
|
if (total == 3) {
|
|
*used = v1;
|
|
*max = v3;
|
|
}
|
|
}
|
|
|
|
bool Platform_getDiskIO(DiskIOData* data) {
|
|
FILE* fp = fopen(PROCDIR "/diskstats", "r");
|
|
if (!fp)
|
|
return false;
|
|
|
|
char lastTopDisk[32] = { '\0' };
|
|
|
|
unsigned long long int read_sum = 0, write_sum = 0, timeSpend_sum = 0;
|
|
char lineBuffer[256];
|
|
while (fgets(lineBuffer, sizeof(lineBuffer), fp)) {
|
|
char diskname[32];
|
|
unsigned long long int read_tmp, write_tmp, timeSpend_tmp;
|
|
if (sscanf(lineBuffer, "%*d %*d %31s %*u %*u %llu %*u %*u %*u %llu %*u %*u %llu", diskname, &read_tmp, &write_tmp, &timeSpend_tmp) == 4) {
|
|
if (String_startsWith(diskname, "dm-"))
|
|
continue;
|
|
|
|
if (String_startsWith(diskname, "zram"))
|
|
continue;
|
|
|
|
/* only count root disks, e.g. do not count IO from sda and sda1 twice */
|
|
if (lastTopDisk[0] && String_startsWith(diskname, lastTopDisk))
|
|
continue;
|
|
|
|
/* This assumes disks are listed directly before any of their partitions */
|
|
String_safeStrncpy(lastTopDisk, diskname, sizeof(lastTopDisk));
|
|
|
|
read_sum += read_tmp;
|
|
write_sum += write_tmp;
|
|
timeSpend_sum += timeSpend_tmp;
|
|
}
|
|
}
|
|
fclose(fp);
|
|
/* multiply with sector size */
|
|
data->totalBytesRead = 512 * read_sum;
|
|
data->totalBytesWritten = 512 * write_sum;
|
|
data->totalMsTimeSpend = timeSpend_sum;
|
|
return true;
|
|
}
|
|
|
|
bool Platform_getNetworkIO(NetworkIOData* data) {
|
|
FILE* fp = fopen(PROCDIR "/net/dev", "r");
|
|
if (!fp)
|
|
return false;
|
|
|
|
memset(data, 0, sizeof(NetworkIOData));
|
|
char lineBuffer[512];
|
|
while (fgets(lineBuffer, sizeof(lineBuffer), fp)) {
|
|
char interfaceName[32];
|
|
unsigned long long int bytesReceived, packetsReceived, bytesTransmitted, packetsTransmitted;
|
|
if (sscanf(lineBuffer, "%31s %llu %llu %*u %*u %*u %*u %*u %*u %llu %llu",
|
|
interfaceName,
|
|
&bytesReceived,
|
|
&packetsReceived,
|
|
&bytesTransmitted,
|
|
&packetsTransmitted) != 5)
|
|
continue;
|
|
|
|
if (String_eq(interfaceName, "lo:"))
|
|
continue;
|
|
|
|
data->bytesReceived += bytesReceived;
|
|
data->packetsReceived += packetsReceived;
|
|
data->bytesTransmitted += bytesTransmitted;
|
|
data->packetsTransmitted += packetsTransmitted;
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
return true;
|
|
}
|
|
|
|
// Linux battery reading by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
|
|
|
|
#define PROC_BATTERY_DIR PROCDIR "/acpi/battery"
|
|
#define PROC_POWERSUPPLY_DIR PROCDIR "/acpi/ac_adapter"
|
|
#define PROC_POWERSUPPLY_ACSTATE_FILE PROC_POWERSUPPLY_DIR "/AC/state"
|
|
#define SYS_POWERSUPPLY_DIR "/sys/class/power_supply"
|
|
|
|
// ----------------------------------------
|
|
// READ FROM /proc
|
|
// ----------------------------------------
|
|
|
|
static double Platform_Battery_getProcBatInfo(void) {
|
|
DIR* batteryDir = opendir(PROC_BATTERY_DIR);
|
|
if (!batteryDir)
|
|
return NAN;
|
|
|
|
uint64_t totalFull = 0;
|
|
uint64_t totalRemain = 0;
|
|
|
|
struct dirent* dirEntry = NULL;
|
|
while ((dirEntry = readdir(batteryDir))) {
|
|
const char* entryName = dirEntry->d_name;
|
|
if (!String_startsWith(entryName, "BAT"))
|
|
continue;
|
|
|
|
char filePath[256];
|
|
char bufInfo[1024] = {0};
|
|
xSnprintf(filePath, sizeof(filePath), "%s/%s/info", PROC_BATTERY_DIR, entryName);
|
|
ssize_t r = xReadfile(filePath, bufInfo, sizeof(bufInfo));
|
|
if (r < 0)
|
|
continue;
|
|
|
|
char bufState[1024] = {0};
|
|
xSnprintf(filePath, sizeof(filePath), "%s/%s/state", PROC_BATTERY_DIR, entryName);
|
|
r = xReadfile(filePath, bufState, sizeof(bufState));
|
|
if (r < 0)
|
|
continue;
|
|
|
|
const char* line;
|
|
|
|
//Getting total charge for all batteries
|
|
char* buf = bufInfo;
|
|
while ((line = strsep(&buf, "\n")) != NULL) {
|
|
char field[100] = {0};
|
|
int val = 0;
|
|
if (2 != sscanf(line, "%99[^:]:%d", field, &val))
|
|
continue;
|
|
|
|
if (String_eq(field, "last full capacity")) {
|
|
totalFull += val;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//Getting remaining charge for all batteries
|
|
buf = bufState;
|
|
while ((line = strsep(&buf, "\n")) != NULL) {
|
|
char field[100] = {0};
|
|
int val = 0;
|
|
if (2 != sscanf(line, "%99[^:]:%d", field, &val))
|
|
continue;
|
|
|
|
if (String_eq(field, "remaining capacity")) {
|
|
totalRemain += val;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
closedir(batteryDir);
|
|
|
|
return totalFull > 0 ? ((double) totalRemain * 100.0) / (double) totalFull : NAN;
|
|
}
|
|
|
|
static ACPresence procAcpiCheck(void) {
|
|
char buffer[1024] = {0};
|
|
ssize_t r = xReadfile(PROC_POWERSUPPLY_ACSTATE_FILE, buffer, sizeof(buffer));
|
|
if (r < 1)
|
|
return AC_ERROR;
|
|
|
|
return String_eq(buffer, "on-line") ? AC_PRESENT : AC_ABSENT;
|
|
}
|
|
|
|
static void Platform_Battery_getProcData(double* percent, ACPresence* isOnAC) {
|
|
*isOnAC = procAcpiCheck();
|
|
*percent = AC_ERROR != *isOnAC ? Platform_Battery_getProcBatInfo() : NAN;
|
|
}
|
|
|
|
// ----------------------------------------
|
|
// READ FROM /sys
|
|
// ----------------------------------------
|
|
|
|
static void Platform_Battery_getSysData(double* percent, ACPresence* isOnAC) {
|
|
*percent = NAN;
|
|
*isOnAC = AC_ERROR;
|
|
|
|
DIR* dir = opendir(SYS_POWERSUPPLY_DIR);
|
|
if (!dir)
|
|
return;
|
|
|
|
uint64_t totalFull = 0;
|
|
uint64_t totalRemain = 0;
|
|
|
|
const struct dirent* dirEntry;
|
|
while ((dirEntry = readdir(dir))) {
|
|
const char* entryName = dirEntry->d_name;
|
|
|
|
#ifdef HAVE_OPENAT
|
|
int entryFd = openat(dirfd(dir), entryName, O_DIRECTORY | O_PATH);
|
|
if (entryFd < 0)
|
|
continue;
|
|
#else
|
|
char entryFd[4096];
|
|
xSnprintf(entryFd, sizeof(entryFd), SYS_POWERSUPPLY_DIR "/%s", entryName);
|
|
#endif
|
|
|
|
enum { AC, BAT } type;
|
|
if (String_startsWith(entryName, "BAT")) {
|
|
type = BAT;
|
|
} else if (String_startsWith(entryName, "AC")) {
|
|
type = AC;
|
|
} else {
|
|
char buffer[32];
|
|
ssize_t ret = xReadfileat(entryFd, "type", buffer, sizeof(buffer));
|
|
if (ret <= 0)
|
|
goto next;
|
|
|
|
/* drop optional trailing newlines */
|
|
for (char* buf = &buffer[(size_t)ret - 1]; *buf == '\n'; buf--)
|
|
*buf = '\0';
|
|
|
|
if (String_eq(buffer, "Battery"))
|
|
type = BAT;
|
|
else if (String_eq(buffer, "Mains"))
|
|
type = AC;
|
|
else
|
|
goto next;
|
|
}
|
|
|
|
if (type == BAT) {
|
|
char buffer[1024];
|
|
ssize_t r = xReadfileat(entryFd, "uevent", buffer, sizeof(buffer));
|
|
if (r < 0)
|
|
goto next;
|
|
|
|
bool full = false;
|
|
bool now = false;
|
|
|
|
double fullCharge = 0;
|
|
double capacityLevel = NAN;
|
|
const char* line;
|
|
|
|
char* buf = buffer;
|
|
while ((line = strsep(&buf, "\n")) != NULL) {
|
|
char field[100] = {0};
|
|
int val = 0;
|
|
if (2 != sscanf(line, "POWER_SUPPLY_%99[^=]=%d", field, &val))
|
|
continue;
|
|
|
|
if (String_eq(field, "CAPACITY")) {
|
|
capacityLevel = val / 100.0;
|
|
continue;
|
|
}
|
|
|
|
if (String_eq(field, "ENERGY_FULL") || String_eq(field, "CHARGE_FULL")) {
|
|
fullCharge = val;
|
|
totalFull += fullCharge;
|
|
full = true;
|
|
if (now)
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
if (String_eq(field, "ENERGY_NOW") || String_eq(field, "CHARGE_NOW")) {
|
|
totalRemain += val;
|
|
now = true;
|
|
if (full)
|
|
break;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!now && full && isNonnegative(capacityLevel))
|
|
totalRemain += capacityLevel * fullCharge;
|
|
|
|
} else if (type == AC) {
|
|
if (*isOnAC != AC_ERROR)
|
|
goto next;
|
|
|
|
char buffer[2];
|
|
ssize_t r = xReadfileat(entryFd, "online", buffer, sizeof(buffer));
|
|
if (r < 1) {
|
|
*isOnAC = AC_ERROR;
|
|
goto next;
|
|
}
|
|
|
|
if (buffer[0] == '0')
|
|
*isOnAC = AC_ABSENT;
|
|
else if (buffer[0] == '1')
|
|
*isOnAC = AC_PRESENT;
|
|
}
|
|
|
|
next:
|
|
Compat_openatArgClose(entryFd);
|
|
}
|
|
|
|
closedir(dir);
|
|
|
|
*percent = totalFull > 0 ? ((double) totalRemain * 100.0) / (double) totalFull : NAN;
|
|
}
|
|
|
|
void Platform_getBattery(double* percent, ACPresence* isOnAC) {
|
|
time_t now = time(NULL);
|
|
// update battery reading is slow. Update it each 10 seconds only.
|
|
if (now < Platform_Battery_cacheTime + 10) {
|
|
*percent = Platform_Battery_cachePercent;
|
|
*isOnAC = Platform_Battery_cacheIsOnAC;
|
|
return;
|
|
}
|
|
|
|
if (Platform_Battery_method == BAT_PROC) {
|
|
Platform_Battery_getProcData(percent, isOnAC);
|
|
if (!isNonnegative(*percent))
|
|
Platform_Battery_method = BAT_SYS;
|
|
}
|
|
if (Platform_Battery_method == BAT_SYS) {
|
|
Platform_Battery_getSysData(percent, isOnAC);
|
|
if (!isNonnegative(*percent))
|
|
Platform_Battery_method = BAT_ERR;
|
|
}
|
|
if (Platform_Battery_method == BAT_ERR) {
|
|
*percent = NAN;
|
|
*isOnAC = AC_ERROR;
|
|
} else {
|
|
*percent = CLAMP(*percent, 0.0, 100.0);
|
|
}
|
|
Platform_Battery_cachePercent = *percent;
|
|
Platform_Battery_cacheIsOnAC = *isOnAC;
|
|
Platform_Battery_cacheTime = now;
|
|
}
|
|
|
|
void Platform_longOptionsUsage(const char* name)
|
|
{
|
|
#ifdef HAVE_LIBCAP
|
|
printf(
|
|
" --drop-capabilities[=off|basic|strict] Drop Linux capabilities when running as root\n"
|
|
" off - do not drop any capabilities\n"
|
|
" basic (default) - drop all capabilities not needed by %s\n"
|
|
" strict - drop all capabilities except those needed for\n"
|
|
" core functionality\n", name);
|
|
#else
|
|
(void) name;
|
|
#endif
|
|
}
|
|
|
|
CommandLineStatus Platform_getLongOption(int opt, int argc, char** argv) {
|
|
#ifndef HAVE_LIBCAP
|
|
(void) argc;
|
|
(void) argv;
|
|
#endif
|
|
|
|
switch (opt) {
|
|
#ifdef HAVE_LIBCAP
|
|
case 160: {
|
|
const char* mode = optarg;
|
|
if (!mode && optind < argc && argv[optind] != NULL &&
|
|
(argv[optind][0] != '\0' && argv[optind][0] != '-')) {
|
|
mode = argv[optind++];
|
|
}
|
|
|
|
if (!mode || String_eq(mode, "basic")) {
|
|
Platform_capabilitiesMode = CAP_MODE_BASIC;
|
|
} else if (String_eq(mode, "off")) {
|
|
Platform_capabilitiesMode = CAP_MODE_OFF;
|
|
} else if (String_eq(mode, "strict")) {
|
|
Platform_capabilitiesMode = CAP_MODE_STRICT;
|
|
} else {
|
|
fprintf(stderr, "Error: invalid capabilities mode \"%s\".\n", mode);
|
|
return STATUS_ERROR_EXIT;
|
|
}
|
|
return STATUS_OK;
|
|
}
|
|
#endif
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return STATUS_ERROR_EXIT;
|
|
}
|
|
|
|
#ifdef HAVE_LIBCAP
|
|
static int dropCapabilities(enum CapMode mode) {
|
|
|
|
if (mode == CAP_MODE_OFF)
|
|
return 0;
|
|
|
|
/* capabilities we keep to operate */
|
|
const cap_value_t keepcapsStrict[] = {
|
|
CAP_DAC_READ_SEARCH,
|
|
CAP_SYS_PTRACE,
|
|
};
|
|
const cap_value_t keepcapsBasic[] = {
|
|
CAP_DAC_READ_SEARCH, /* read non world-readable process files of other users, like /proc/[pid]/io */
|
|
CAP_KILL, /* send signals to processes of other users */
|
|
CAP_SYS_NICE, /* lower process nice value / change nice value for arbitrary processes */
|
|
CAP_SYS_PTRACE, /* read /proc/[pid]/exe */
|
|
#ifdef HAVE_DELAYACCT
|
|
CAP_NET_ADMIN, /* communicate over netlink socket for delay accounting */
|
|
#endif
|
|
};
|
|
const cap_value_t* const keepcaps = (mode == CAP_MODE_BASIC) ? keepcapsBasic : keepcapsStrict;
|
|
const size_t ncap = (mode == CAP_MODE_BASIC) ? ARRAYSIZE(keepcapsBasic) : ARRAYSIZE(keepcapsStrict);
|
|
|
|
cap_t caps = cap_init();
|
|
if (caps == NULL) {
|
|
fprintf(stderr, "Error: can not initialize capabilities: %s\n", strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
if (cap_clear(caps) < 0) {
|
|
fprintf(stderr, "Error: can not clear capabilities: %s\n", strerror(errno));
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
|
|
cap_t currCaps = cap_get_proc();
|
|
if (currCaps == NULL) {
|
|
fprintf(stderr, "Error: can not get current process capabilities: %s\n", strerror(errno));
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
|
|
for (size_t i = 0; i < ncap; i++) {
|
|
if (!CAP_IS_SUPPORTED(keepcaps[i]))
|
|
continue;
|
|
|
|
cap_flag_value_t current;
|
|
if (cap_get_flag(currCaps, keepcaps[i], CAP_PERMITTED, ¤t) < 0) {
|
|
fprintf(stderr, "Error: can not get current value of capability %d: %s\n", keepcaps[i], strerror(errno));
|
|
cap_free(currCaps);
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
|
|
if (current != CAP_SET)
|
|
continue;
|
|
|
|
if (cap_set_flag(caps, CAP_PERMITTED, 1, &keepcaps[i], CAP_SET) < 0) {
|
|
fprintf(stderr, "Error: can not set permitted capability %d: %s\n", keepcaps[i], strerror(errno));
|
|
cap_free(currCaps);
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
|
|
if (cap_set_flag(caps, CAP_EFFECTIVE, 1, &keepcaps[i], CAP_SET) < 0) {
|
|
fprintf(stderr, "Error: can not set effective capability %d: %s\n", keepcaps[i], strerror(errno));
|
|
cap_free(currCaps);
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (cap_set_proc(caps) < 0) {
|
|
fprintf(stderr, "Error: can not set process capabilities: %s\n", strerror(errno));
|
|
cap_free(currCaps);
|
|
cap_free(caps);
|
|
return -1;
|
|
}
|
|
|
|
cap_free(currCaps);
|
|
cap_free(caps);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
bool Platform_init(void) {
|
|
#ifdef HAVE_LIBCAP
|
|
if (dropCapabilities(Platform_capabilitiesMode) < 0)
|
|
return false;
|
|
#endif
|
|
|
|
if (access(PROCDIR, R_OK) != 0) {
|
|
fprintf(stderr, "Error: could not read procfs (compiled to look in %s).\n", PROCDIR);
|
|
return false;
|
|
}
|
|
|
|
#ifdef HAVE_SENSORS_SENSORS_H
|
|
LibSensors_init();
|
|
#endif
|
|
|
|
char target[PATH_MAX];
|
|
ssize_t ret = readlink(PROCDIR "/self/ns/pid", target, sizeof(target) - 1);
|
|
if (ret > 0) {
|
|
target[ret] = '\0';
|
|
|
|
if (!String_eq("pid:[4026531836]", target)) { // magic constant PROC_PID_INIT_INO from include/linux/proc_ns.h#L46
|
|
Running_containerized = true;
|
|
return true; // early return
|
|
}
|
|
}
|
|
|
|
FILE* fp = fopen(PROCDIR "/1/mounts", "r");
|
|
if (fp) {
|
|
char lineBuffer[256];
|
|
while (fgets(lineBuffer, sizeof(lineBuffer), fp)) {
|
|
// detect lxc or overlayfs and guess that this means we are running containerized
|
|
if (String_startsWith(lineBuffer, "lxcfs /proc") || String_startsWith(lineBuffer, "overlay / overlay")) {
|
|
Running_containerized = true;
|
|
break;
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void Platform_done(void) {
|
|
#ifdef HAVE_SENSORS_SENSORS_H
|
|
LibSensors_cleanup();
|
|
#endif
|
|
}
|