sighand = lock_task_sighand(lk->tsk, &lk->flags);
rcu_read_unlock();
- if (sighand && !ctx->tsk) {
+ if (!sighand)
+ return 0;
+
+ if (!ctx->tsk) {
unlock_task_sighand(lk->tsk, &lk->flags);
- sighand = NULL;
+ return 0;
}
- return sighand != NULL;
+ if (lk->tsk->tgid == current->tgid)
+ lk->tsk = current;
+
+ return 1;
}
static void signalfd_unlock(struct signalfd_lockctx *lk)
* the peer disconnects.
*/
if (signalfd_lock(ctx, &lk)) {
- if (next_signal(&lk.tsk->pending, &ctx->sigmask) > 0 ||
+ if ((lk.tsk == current &&
+ next_signal(&lk.tsk->pending, &ctx->sigmask) > 0) ||
next_signal(&lk.tsk->signal->shared_pending,
&ctx->sigmask) > 0)
events |= POLLIN;
if (sizemask != sizeof(sigset_t) ||
copy_from_user(&sigmask, user_mask, sizeof(sigmask)))
- return error = -EINVAL;
+ return -EINVAL;
sigdelsetmask(&sigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
signotset(&sigmask);
init_waitqueue_head(&ctx->wqh);
ctx->sigmask = sigmask;
- ctx->tsk = current;
+ ctx->tsk = current->group_leader;
sighand = current->sighand;
/*