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// Test that fork fails gracefully.
// Tiny executable so that the limit can be filling the proc table.
#include "types.h"
#include "stat.h"
#include "user.h"
#define N 1000
void
printf(int fd, char *s, ...)
{
write(fd, s, strlen(s));
}
void
forktest(void)
{
int n, pid;
printf(1, "fork test\n");
for(n=0; n<N; n++){
pid = fork();
if(pid < 0)
break;
if(pid == 0)
exit();
}
if(n == N){
printf(1, "fork claimed to work N times!\n", N);
exit();
}
for(; n > 0; n--){
if(wait() < 0){
printf(1, "wait stopped early\n");
exit();
}
}
if(wait() != -1){
printf(1, "wait got too many\n");
exit();
}
printf(1, "fork test OK\n");
}
int
main(void)
{
forktest();
exit();
}