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/*
htop - OpenBSDProcessTable.c
(C) 2014 Hisham H. Muhammad
(C) 2015 Michael McConville
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "openbsd/OpenBSDProcessTable.h"
#include <kvm.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mount.h>
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <uvm/uvmexp.h>
#include "CRT.h"
#include "Macros.h"
#include "Object.h"
#include "Process.h"
#include "ProcessTable.h"
#include "Settings.h"
#include "XUtils.h"
#include "openbsd/OpenBSDMachine.h"
#include "openbsd/OpenBSDProcess.h"
ProcessTable* ProcessTable_new(Machine* host, Hashtable* pidMatchList) {
OpenBSDProcessTable* this = xCalloc(1, sizeof(OpenBSDProcessTable));
Object_setClass(this, Class(ProcessTable));
ProcessTable* super = &this->super;
ProcessTable_init(super, Class(OpenBSDProcess), host, pidMatchList);
return this;
}
void ProcessTable_delete(Object* cast) {
OpenBSDProcessTable* this = (OpenBSDProcessTable*) cast;
ProcessTable_done(&this->super);
free(this);
}
static void OpenBSDProcessTable_updateCwd(const struct kinfo_proc* kproc, Process* proc) {
const int mib[] = { CTL_KERN, KERN_PROC_CWD, kproc->p_pid };
char buffer[2048];
size_t size = sizeof(buffer);
if (sysctl(mib, 3, buffer, &size, NULL, 0) != 0) {
free(proc->procCwd);
proc->procCwd = NULL;
return;
}
/* Kernel threads return an empty buffer */
if (buffer[0] == '\0') {
free(proc->procCwd);
proc->procCwd = NULL;
return;
}
free_and_xStrdup(&proc->procCwd, buffer);
}
static void OpenBSDProcessTable_updateProcessName(kvm_t* kd, const struct kinfo_proc* kproc, Process* proc) {
Process_updateComm(proc, kproc->p_comm);
/*
* Like OpenBSD's top(1), we try to fall back to the command name
* (argv[0]) if we fail to construct the full command.
*/
char** arg = kvm_getargv(kd, kproc, 500);
if (arg == NULL || *arg == NULL) {
Process_updateCmdline(proc, kproc->p_comm, 0, strlen(kproc->p_comm));
return;
}
size_t len = 0;
for (int i = 0; arg[i] != NULL; i++) {
len += strlen(arg[i]) + 1; /* room for arg and trailing space or NUL */
}
/* don't use xMalloc here - we want to handle huge argv's gracefully */
char* s;
if ((s = malloc(len)) == NULL) {
Process_updateCmdline(proc, kproc->p_comm, 0, strlen(kproc->p_comm));
return;
}
*s = '\0';
int start = 0;
int end = 0;
for (int i = 0; arg[i] != NULL; i++) {
size_t n = strlcat(s, arg[i], len);
if (i == 0) {
end = MINIMUM(n, len - 1);
/* check if cmdline ended earlier, e.g 'kdeinit5: Running...' */
for (int j = end; j > 0; j--) {
if (arg[0][j] == ' ' && arg[0][j - 1] != '\\') {
end = (arg[0][j - 1] == ':') ? (j - 1) : j;
}
}
}
/* the trailing space should get truncated anyway */
strlcat(s, " ", len);
}
Process_updateCmdline(proc, s, start, end);
free(s);
}
/*
* Taken from OpenBSD's ps(1).
*/
static double getpcpu(const OpenBSDMachine* ohost, const struct kinfo_proc* kp) {
if (ohost->fscale == 0)
return 0.0;
return 100.0 * (double)kp->p_pctcpu / ohost->fscale;
}
static void OpenBSDProcessTable_scanProcs(OpenBSDProcessTable* this) {
Machine* host = this->super.super.host;
OpenBSDMachine* ohost = (OpenBSDMachine*) host;
const Settings* settings = host->settings;
const bool hideKernelThreads = settings->hideKernelThreads;
const bool hideUserlandThreads = settings->hideUserlandThreads;
int count = 0;
const struct kinfo_proc* kprocs = kvm_getprocs(ohost->kd, KERN_PROC_KTHREAD | KERN_PROC_SHOW_THREADS, 0, sizeof(struct kinfo_proc), &count);
for (int i = 0; i < count; i++) {
const struct kinfo_proc* kproc = &kprocs[i];
/* Ignore main threads */
if (kproc->p_tid != -1) {
Process* containingProcess = ProcessTable_findProcess(&this->super, kproc->p_pid);
if (containingProcess) {
if (((OpenBSDProcess*)containingProcess)->addr == kproc->p_addr)
continue;
containingProcess->nlwp++;
}
}
bool preExisting = false;
Process* proc = ProcessTable_getProcess(&this->super, (kproc->p_tid == -1) ? kproc->p_pid : kproc->p_tid, &preExisting, OpenBSDProcess_new);
OpenBSDProcess* op = (OpenBSDProcess*) proc;
if (!preExisting) {
Process_setParent(proc, kproc->p_ppid);
Process_setThreadGroup(proc, kproc->p_pid);
proc->tpgid = kproc->p_tpgid;
proc->session = kproc->p_sid;
proc->pgrp = kproc->p__pgid;
proc->isKernelThread = proc->pgrp == 0;
proc->isUserlandThread = kproc->p_tid != -1;
proc->starttime_ctime = kproc->p_ustart_sec;
Process_fillStarttimeBuffer(proc);
ProcessTable_add(&this->super, proc);
OpenBSDProcessTable_updateProcessName(ohost->kd, kproc, proc);
if (settings->ss->flags & PROCESS_FLAG_CWD) {
OpenBSDProcessTable_updateCwd(kproc, proc);
}
proc->tty_nr = kproc->p_tdev;
const char* name = ((dev_t)kproc->p_tdev != NODEV) ? devname(kproc->p_tdev, S_IFCHR) : NULL;
if (!name || String_eq(name, "??")) {
free(proc->tty_name);
proc->tty_name = NULL;
} else {
free_and_xStrdup(&proc->tty_name, name);
}
} else {
if (settings->updateProcessNames) {
OpenBSDProcessTable_updateProcessName(ohost->kd, kproc, proc);
}
}
op->addr = kproc->p_addr;
proc->m_virt = kproc->p_vm_dsize * ohost->pageSizeKB;
proc->m_resident = kproc->p_vm_rssize * ohost->pageSizeKB;
proc->percent_mem = proc->m_resident / (float)host->totalMem * 100.0F;
proc->percent_cpu = CLAMP(getpcpu(ohost, kproc), 0.0F, host->activeCPUs * 100.0F);
Process_updateCPUFieldWidths(proc->percent_cpu);
proc->nice = kproc->p_nice - 20;
proc->time = 100 * (kproc->p_rtime_sec + ((kproc->p_rtime_usec + 500000) / 1000000));
proc->priority = kproc->p_priority - PZERO;
proc->processor = kproc->p_cpuid;
proc->minflt = kproc->p_uru_minflt;
proc->majflt = kproc->p_uru_majflt;
proc->nlwp = 1;
if (proc->st_uid != kproc->p_uid) {
proc->st_uid = kproc->p_uid;
proc->user = UsersTable_getRef(host->usersTable, proc->st_uid);
}
/* Taken from: https://github.com/openbsd/src/blob/6a38af0976a6870911f4b2de19d8da28723a5778/sys/sys/proc.h#L420 */
switch (kproc->p_stat) {
case SIDL: proc->state = IDLE; break;
case SRUN: proc->state = RUNNABLE; break;
case SSLEEP: proc->state = SLEEPING; break;
case SSTOP: proc->state = STOPPED; break;
case SZOMB: proc->state = ZOMBIE; break;
case SDEAD: proc->state = DEFUNCT; break;
case SONPROC: proc->state = RUNNING; break;
default: proc->state = UNKNOWN;
}
if (Process_isKernelThread(proc)) {
this->super.kernelThreads++;
} else if (Process_isUserlandThread(proc)) {
this->super.userlandThreads++;
}
this->super.totalTasks++;
if (proc->state == RUNNING) {
this->super.runningTasks++;
}
proc->super.show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
proc->super.updated = true;
}
}
void ProcessTable_goThroughEntries(ProcessTable* super) {
OpenBSDProcessTable* this = (OpenBSDProcessTable*) super;
OpenBSDProcessTable_scanProcs(this);
}
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