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/*
* usr/klibc/tests/vfork.c
*
* vfork is messy on most architectures. Do our best to test it out.
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(int argc, char *argv[])
{
pid_t f, rv;
int status;
f = vfork();
if (f == 0) {
printf("Child (%d)...\n", (int)getpid());
_exit(123);
} else if (f > 0) {
int err = 0;
printf("Parent (child = %d)\n", (int)f);
rv = waitpid(f, &status, 0);
if (rv != f) {
printf("waitpid returned %d, errno = %d\n",
(int)rv, errno);
err++;
}
if (!WIFEXITED(status) || WEXITSTATUS(status) != 123) {
printf("Child process existed with wrong status %d\n",
status);
err++;
}
return err;
} else {
printf("vfork returned %d, errno = %d\n",
(int)f, errno);
return 127;
}
}
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