fork1
if (fork1(p, FORK_FORK, start_init, NULL, NULL, &initproc))
return fork1(p, flags, func, NULL, retval, NULL);
return fork1(p, FORK_VFORK|FORK_PPWAIT, child_return, NULL,
error = fork1(&proc0, FORK_SHAREVM|FORK_SHAREFILES|FORK_NOZOMBIE|
if (fork1(&proc0, FORK_SHAREVM|FORK_SHAREFILES|FORK_NOZOMBIE|
int fork1(struct proc *_curp, int _flags, void (*_func)(void *),