OpenBSD: add environment reading support (#819)

This commit is contained in:
multiplexd 2018-08-19 05:07:36 +01:00 committed by Hisham Muhammad
parent d74b6dc8e0
commit c1fb585b6b
1 changed files with 48 additions and 2 deletions

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@ -23,6 +23,7 @@ in the source distribution for its full text.
#include <sys/sched.h>
#include <uvm/uvmexp.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/swap.h>
#include <unistd.h>
@ -34,6 +35,9 @@ in the source distribution for its full text.
#include <sys/time.h>
#include <sys/resource.h>
#include <time.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
/*{
#include "Action.h"
@ -294,6 +298,48 @@ void Platform_setTasksValues(Meter* this) {
}
char* Platform_getProcessEnv(pid_t pid) {
// TODO
char errbuf[_POSIX2_LINE_MAX];
char *env;
char **ptr;
int count;
kvm_t *kt;
struct kinfo_proc *kproc;
size_t capacity = 4096, size = 0;
if ((kt = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf)) == NULL)
return NULL;
if ((kproc = kvm_getprocs(kt, KERN_PROC_PID, pid,
sizeof(struct kinfo_proc), &count)) == NULL) {\
(void) kvm_close(kt);
return NULL;
}
if ((ptr = kvm_getenvv(kt, kproc, 0)) == NULL) {
(void) kvm_close(kt);
return NULL;
}
env = xMalloc(capacity);
for (char **p = ptr; *p; p++) {
size_t len = strlen(*p) + 1;
if (size + len > capacity) {
capacity *= 2;
env = xRealloc(env, capacity);
}
strlcpy(env + size, *p, len);
size += len;
}
if (size < 2 || env[size - 1] || env[size - 2]) {
if (size + 2 < capacity)
env = xRealloc(env, capacity + 2);
env[size] = 0;
env[size+1] = 0;
}
(void) kvm_close(kt);
return env;
}