uloop: remove file descriptors if neither read nor write notification is requested

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/uloop.c b/uloop.c
index a3ba3ad550c6a8c7383b7e167c697e2fd5a08835..f0ccb0c2e6344400853bd8548355328f19feb06f 100644 (file)
--- a/uloop.c
+++ b/uloop.c
@@ -246,6 +246,9 @@ int uloop_fd_delete(struct uloop_fd *sock)
 {
        int i;
 
+       if (!sock->registered)
+               return 0;
+
        for (i = cur_fd + 1; i < cur_nfds; i++) {
                if (events[i].data.ptr != sock)
                        continue;
@@ -302,6 +305,9 @@ int uloop_fd_add(struct uloop_fd *sock, unsigned int flags)
        unsigned int fl;
        int ret;
 
+       if (!(flags & (ULOOP_READ | ULOOP_WRITE)))
+               return uloop_fd_delete(sock);
+
        if (!sock->registered && !(flags & ULOOP_BLOCKING)) {
                fl = fcntl(sock->fd, F_GETFL, 0);
                fl |= O_NONBLOCK;