Support NOTE_EOF for kqueue EVFILT_READ filters on NFS files.

committing for jsg@,  ok reyk@ tedu@ guenther@

diff --git a/sys/nfs/nfs_kq.c b/sys/nfs/nfs_kq.c
index aac0be7..00cc0f9 100644 (file)
--- a/sys/nfs/nfs_kq.c
+++ b/sys/nfs/nfs_kq.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: nfs_kq.c,v 1.20 2014/07/12 18:43:52 tedu Exp $ */
+/*     $OpenBSD: nfs_kq.c,v 1.21 2014/08/06 19:31:30 guenther Exp $ */
 /*     $NetBSD: nfs_kq.c,v 1.7 2003/10/30 01:43:10 simonb Exp $        */
 
 /*-
@@ -230,6 +230,10 @@ filt_nfsread(struct knote *kn, long hint)
 #ifdef DEBUG
        printf("nfsread event. %lld\n", kn->kn_data);
 #endif
+       if (kn->kn_data == 0 && kn->kn_sfflags & NOTE_EOF) {
+               kn->kn_fflags |= NOTE_EOF;
+               return (1);
+       }
         return (kn->kn_data != 0);
 }