solaris/Platform.c

/*
htop - solaris/Platform.c
(C) 2014 Hisham H. Muhammad
(C) 2015 David C. Hunt
(C) 2017,2018 Guy M. Broome
Copyright 2022-2026 Rivoreo
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/

/*{
#include "config.h"
#include "Action.h"
#include "BatteryMeter.h"
#include "SignalsPanel.h"
#include <signal.h>
#include <sys/mkdev.h>
#include <sys/proc.h>

#define PLATFORM_SUPPORT_PROCESS_O_STATE
#ifdef HAVE_LIBPROC
// XXX
#define PLATFORM_PRESENT_THREADS_AS_PROCESSES
#endif

#define MAX_VALUE_OF(T) (((size_t)1 << (sizeof(T) * 8 - ((T)-1 == -1))) - 1)
}*/

#include "Platform.h"
#include "Meter.h"
#include "CPUMeter.h"
#include "MemoryMeter.h"
#include "SwapMeter.h"
#include "TasksMeter.h"
#include "LoadAverageMeter.h"
#include "ClockMeter.h"
#include "HostnameMeter.h"
#include "UptimeMeter.h"
#include "UsersMeter.h"
#include "SolarisProcess.h"
#include "SolarisProcessList.h"
#include "IOUtils.h"
#include "KStat.h"
#include "StringUtils.h"
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/loadavg.h>
#include <sys/stat.h>
#include <sys/swap.h>
#include <string.h>
#include <limits.h>
#include <math.h>
#include <sys/var.h>
#ifdef HAVE_LIBPROC
#include <libproc.h>
#else
#include <procfs.h>
#include <unistd.h>
#include <fcntl.h>
#endif

#ifndef HAVE_ISNAN
#undef isnan
#include <ieeefp.h>
#define isnan isnand
#endif

const SignalItem Platform_signals[] = {
   { .name = "Cancel", .number = 0 },
#define SIG(NAME) { .name = #NAME, .number = SIG##NAME }
   SIG(HUP),
   SIG(INT),
   SIG(QUIT),
   SIG(ILL),
   SIG(TRAP),
   SIG(IOT),
   SIG(ABRT),
   SIG(EMT),
   SIG(FPE),
   SIG(KILL),
   SIG(BUS),
   SIG(SEGV),
   SIG(SYS),
   SIG(PIPE),
   SIG(ALRM),
   SIG(TERM),
   SIG(USR1),
   SIG(USR2),
   SIG(CHLD),
   SIG(PWR),
   SIG(WINCH),
   SIG(URG),
   SIG(POLL),
   SIG(IO),
   SIG(STOP),
   SIG(TSTP),
   SIG(CONT),
   SIG(TTIN),
   SIG(TTOU),
   SIG(VTALRM),
   SIG(PROF),
   SIG(XCPU),
   SIG(XFSZ),
   SIG(WAITING),
   SIG(LWP),
   SIG(FREEZE),
   SIG(THAW),
   SIG(CANCEL),
   SIG(LOST),
   SIG(XRES),
#ifdef SIGJVM1
   SIG(JVM1),
#endif
#ifdef SIGJVM2
   SIG(JVM2),
#endif
#undef SIG
};

const unsigned int Platform_numberOfSignals = sizeof(Platform_signals)/sizeof(SignalItem);

#ifdef HAVE_LIBPROC
ProcessField Platform_defaultFields[] = { HTOP_PID_FIELD, HTOP_LWPID_FIELD, HTOP_EFFECTIVE_USER_FIELD, HTOP_PRIORITY_FIELD, HTOP_NICE_FIELD, HTOP_M_SIZE_FIELD, HTOP_M_RESIDENT_FIELD, HTOP_STATE_FIELD, HTOP_PERCENT_CPU_FIELD, HTOP_PERCENT_MEM_FIELD, HTOP_TIME_FIELD, HTOP_COMM_FIELD, 0 };
#else
ProcessField Platform_defaultFields[] = { HTOP_PID_FIELD, HTOP_EFFECTIVE_USER_FIELD, HTOP_PRIORITY_FIELD, HTOP_NICE_FIELD, HTOP_M_SIZE_FIELD, HTOP_M_RESIDENT_FIELD, HTOP_STATE_FIELD, HTOP_PERCENT_CPU_FIELD, HTOP_PERCENT_MEM_FIELD, HTOP_TIME_FIELD, HTOP_COMM_FIELD, 0 };
#endif

MeterClass* Platform_meterTypes[] = {
   &CPUMeter_class,
   &ClockMeter_class,
   &LoadAverageMeter_class,
   &LoadMeter_class,
   &MemoryMeter_class,
   &SwapMeter_class,
   &TasksMeter_class,
#ifdef HAVE_UTMPX
   &UsersMeter_class,
#endif
   &BatteryMeter_class,
   &HostnameMeter_class,
   &UptimeMeter_class,
   &AllCPUsMeter_class,
   &AllCPUs2Meter_class,
   &LeftCPUsMeter_class,
   &RightCPUsMeter_class,
   &LeftCPUs2Meter_class,
   &RightCPUs2Meter_class,
   &BlankMeter_class,
   NULL
};

void Platform_setBindings(Htop_Action* keys) {
   (void) keys;
}

const unsigned int Platform_numberOfFields = HTOP_LAST_PROCESSFIELD;

int Platform_getUptime() {
	// Fallback to utmpx
	return -1;
}

void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
   double plat_loadavg[LOADAVG_NSTATS];
   if(getloadavg(plat_loadavg, LOADAVG_NSTATS) < 0) return;
   *one = plat_loadavg[LOADAVG_1MIN];
   *five = plat_loadavg[LOADAVG_5MIN];
   *fifteen = plat_loadavg[LOADAVG_15MIN];
}

int Platform_getMaxPid() {
#if 0
	/* Disabled because the maximum number of processes doesn't
	 * necessarily mean the maximum possible PID value. */
	struct var *kvar = read_unnamed_kstat(KSTAT_UNIX_VAR);
	if(kvar && kvar->v_proc > 0) return kvar->v_proc - 1;
#endif
#ifdef PID_MAX
	return PID_MAX;
#else
	return 32778;	// Reasonable Solaris default
#endif
}

double Platform_updateCPUValues(Meter *meter, int cpu) {
   const SolarisProcessList *spl = (const SolarisProcessList *)meter->pl;
   const CPUData *cpuData = spl->cpus + (meter->pl->cpuCount > 1 ? cpu : 0);
   double *v = meter->values;
   double percent;
   v[CPU_METER_NICE]   = cpuData->nicePercent;
   v[CPU_METER_NORMAL] = cpuData->userPercent;
   if (meter->pl->settings->detailedCPUTime) {
      v[CPU_METER_KERNEL] = cpuData->systemPercent;
      v[CPU_METER_IRQ]    = cpuData->irqPercent;
      Meter_setItemCount(meter, 4);
      percent = v[0]+v[1]+v[2]+v[3];
   } else {
      v[2] = cpuData->systemAllPercent;
      Meter_setItemCount(meter, 3);
      percent = v[0]+v[1]+v[2];
   }

   percent = CLAMP(percent, 0.0, 100.0);
   if (isnan(percent)) percent = 0.0;
   return percent;
}

void Platform_updateMemoryValues(Meter *meter) {
   const ProcessList *pl = meter->pl;
   meter->total = pl->totalMem;
   meter->values[0] = pl->usedMem;
   meter->values[1] = 0;
   meter->values[2] = pl->cachedMem;
}

void Platform_updateSwapValues(Meter *meter) {
   const ProcessList *pl = meter->pl;
   meter->total = pl->totalSwap;
   meter->values[0] = pl->usedSwap;
}

static char **get_process_vector(const Process *proc, bool is_env) {
	bool is_64bit;
	const SolarisProcess *sol_proc = (const SolarisProcess *)proc;
	switch(sol_proc->data_model) {
		case PR_MODEL_ILP32:
			is_64bit = false;
			break;
		case PR_MODEL_LP64:
			is_64bit = true;
			break;
		default:
			return NULL;
	}
	if(Process_isKernelProcess(proc)) return NULL;
	if((is_env ? sol_proc->envv_offset : sol_proc->argv_offset) < 0) return NULL;
	char path[20];
#ifdef HAVE_LIBPROC
	xSnprintf(path, sizeof path, "/proc/%d/as", (int)sol_proc->realpid);
#else
	xSnprintf(path, sizeof path, "/proc/%d/as", (int)proc->pid);
#endif
	int fd = open(path, O_RDONLY);
	if(fd == -1) return NULL;
	if(lseek(fd, is_env ? sol_proc->envv_offset : sol_proc->argv_offset, SEEK_SET) < 0) {
		close(fd);
		return NULL;
	}
	char **v = xMalloc(sizeof(char *));
	unsigned int i = 0;
	while(true) {
		off_t offset;
		if(is_64bit) {
			uint64_t buffer;
			if(xread(fd, &buffer, 8) < 8) break;
			if(buffer > MAX_VALUE_OF(off_t)) continue;
			offset = buffer;
		} else {
			uint32_t buffer;
			if(xread(fd, &buffer, 4) < 4) break;
			offset = buffer;
		}
		if(!offset) break;
		v[i] = xMalloc(256);
		int len = pread(fd, v[i], 256, offset);
		if(len < 1) {
			free(v[i]);
			continue;
		}
		len = strnlen(v[i], len);
		if(len < 255) v[i] = realloc(v[i], len + 1);
		else if(len == 256) v[i][255] = 0;
		v = xRealloc(v, (++i + 1) * sizeof(char *));
	}
	close(fd);
	v[i] = NULL;
	return v;
}

char **Platform_getProcessArgv(const Process *proc) {
	return get_process_vector(proc, false);
}

#ifdef HAVE_LIBPROC

struct env_accum {
   char **env;
   unsigned int count;
};

static int append_env(void *arg, struct ps_prochandle *handle, uintptr_t addr, const char *s) {
	struct env_accum *accum = arg;
	accum->env[accum->count] = xStrdup(s);
	accum->env = xRealloc(accum->env, (++accum->count + 1) * sizeof(char *));
	return 0; 
}

char **Platform_getProcessEnvv(const Process *proc) {
   pid_t pid = ((SolarisProcess *)proc)->realpid;
   int graberr;
   struct ps_prochandle *handle = Pgrab(pid, PGRAB_RDONLY, &graberr);
   if(!handle) return NULL;
   struct env_accum accum = { .env = xMalloc(sizeof(char *)) };
   Penv_iter(handle, append_env, &accum); 
   Prelease(handle, 0);
   accum.env[accum.count] = NULL;
   return accum.env;
}

#else

char **Platform_getProcessEnvv(const Process *proc) {
	return get_process_vector(proc, true);
}

#endif

bool Platform_haveSwap() {
	return swapctl(SC_GETNSWP, NULL) > 0;
}