1#include <spawn.h>
 2#include <errno.h>
 3
 4int posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags)
 5{
 6	const unsigned all_flags =
 7		POSIX_SPAWN_RESETIDS |
 8		POSIX_SPAWN_SETPGROUP |
 9		POSIX_SPAWN_SETSIGDEF |
10		POSIX_SPAWN_SETSIGMASK |
11		POSIX_SPAWN_SETSCHEDPARAM |
12		POSIX_SPAWN_SETSCHEDULER |
13		POSIX_SPAWN_USEVFORK |
14		POSIX_SPAWN_SETSID;
15	if (flags & ~all_flags) return EINVAL;
16	attr->__flags = flags;
17	return 0;
18}