25 lines
689 B
C
25 lines
689 B
C
#include <sys/syscall.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
|
|
int main(void) {
|
|
int ret, child_pid, status;
|
|
printf("Run a parent process has pid = %d and ppid = %d\n", getpid(), getppid());
|
|
|
|
ret = syscall(__NR_spawn, &child_pid, "getpid/bin.encrypted", NULL, NULL);
|
|
if (ret < 0) {
|
|
printf("ERROR: failed to spawn a child process\n");
|
|
return -1;
|
|
}
|
|
printf("Spawn a new proces successfully (pid = %d)\n", child_pid);
|
|
|
|
ret = syscall(__NR_wait4, -1, &status, 0);
|
|
if (ret < 0) {
|
|
printf("ERROR: failed to wait4 the child process\n");
|
|
return -1;
|
|
}
|
|
printf("Child process exited with status = %d\n", status);
|
|
|
|
return 0;
|
|
}
|