1#include <spawn.h>
 2#include <stdlib.h>
 3#include <errno.h>
 4#include "fdop.h"
 5
 6int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa, int srcfd, int fd)
 7{
 8	if (srcfd < 0 || fd < 0) return EBADF;
 9	struct fdop *op = malloc(sizeof *op);
10	if (!op) return ENOMEM;
11	op->cmd = FDOP_DUP2;
12	op->srcfd = srcfd;
13	op->fd = fd;
14	if ((op->next = fa->__actions)) op->next->prev = op;
15	op->prev = 0;
16	fa->__actions = op;
17	return 0;
18}