MSG_LOCKED
msqkptr->u.msg_perm.mode &= ~MSG_LOCKED;
msqkptr->u.msg_perm.mode &= ~MSG_LOCKED;
(msqkptr->u.msg_perm.mode & MSG_LOCKED) != 0)
(msqkptr->u.msg_perm.mode & MSG_LOCKED) == 0)
if (msqkptr->u.msg_perm.mode & MSG_LOCKED) {
if ((msqkptr->u.msg_perm.mode & MSG_LOCKED) != 0) {
msqkptr->u.msg_perm.mode |= MSG_LOCKED;
msqkptr->u.msg_perm.mode &= ~MSG_LOCKED;
if (msqkptr->u.msg_perm.mode & MSG_LOCKED)
if ((msqkptr->u.msg_perm.mode & MSG_LOCKED) != 0)
msqkptr->u.msg_perm.mode |= MSG_LOCKED;
msqkptr->u.msg_perm.mode &= ~MSG_LOCKED;