util: Break out pollbadbit()

[secnet] / util.h

diff --git a/util.h b/util.h
index 3549eb0..63ceef6 100644 (file)
--- a/util.h
+++ b/util.h
@@ -98,6 +98,8 @@ enum async_linebuf_result {
     async_linebuf_broken,
 };
 
+const char *pollbadbit(int revents); /* returns 0, or bad bit description */
+
 enum async_linebuf_result
 async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
                   const char **emsg_out);