--- lib/libc/sys/shmat.2	(revision 318173)
+++ lib/libc/sys/shmat.2	(working copy)
@@ -104,6 +104,11 @@ 
 .Fa addr
 argument
 was not an acceptable address.
+.It Bq Er EMFILE
+Failed to attach the shared memory segment because the
+.Va kern.ipc.shmseg
+.Xr sysctl 3
+limit is exceeded.
 .El
 .Pp
 The