#define FDOP_CLOSE 1
#define FDOP_DUP2 2
#define FDOP_OPEN 3
#define FDOP_CHDIR 4
#define FDOP_FCHDIR 5

#define malloc __libc_malloc
#define calloc __libc_calloc
#define realloc undef
#define free __libc_free

static inline int faexpand(posix_spawn_file_actions_t *fa, size_t str)
{
	posix_spawn_file_actions_t *n, *blk;
	blk = malloc(sizeof *blk + str);
	if (!blk) return -1;
	*blk = *fa;
	n = fa->__actions;
	fa->__actions = blk;
	blk->__actions = n->__actions;
	n->__actions = blk;
	fa->__pad0[0] = 0;
	return 0;
}