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Use posix_spawn and wait4 in libc

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Tate, Hongliang Tian 2019-01-06 19:42:36 +08:00
parent c00fddd2bf
commit 98b4508a0d
1 changed files with 4 additions and 2 deletions
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6
test/spawn/main.c
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@ -1,19 +1,21 @@
#include <sys/syscall.h> #include <sys/syscall.h>
#include <sys/wait.h>
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <spawn.h>
int main(void) { int main(void) {
int ret, child_pid, status; int ret, child_pid, status;
printf("Run a parent process has pid = %d and ppid = %d\n", getpid(), getppid()); 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); ret = posix_spawn(&child_pid, "getpid/bin.encrypted", NULL, NULL, NULL, NULL);
if (ret < 0) { if (ret < 0) {
printf("ERROR: failed to spawn a child process\n"); printf("ERROR: failed to spawn a child process\n");
return -1; return -1;
} }
printf("Spawn a new proces successfully (pid = %d)\n", child_pid); printf("Spawn a new proces successfully (pid = %d)\n", child_pid);
ret = syscall(__NR_wait4, -1, &status, 0); ret = wait4(-1, &status, 0, NULL);
if (ret < 0) { if (ret < 0) {
printf("ERROR: failed to wait4 the child process\n"); printf("ERROR: failed to wait4 the child process\n");
return -1; return -1;