From 78d181cb3e473c275fe8cef967faf8d0c4b8bed8 Mon Sep 17 00:00:00 2001
From: leitner <leitner>
Date: Sat, 6 Mar 2004 10:27:44 +0000
Subject: [PATCH] document return values correctly

---
 io/io_fd.3 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/io/io_fd.3 b/io/io_fd.3
index 5cfa801..787c252 100644
--- a/io/io_fd.3
+++ b/io/io_fd.3
@@ -4,7 +4,7 @@ io_fd \- prepare descriptor for io_wait
 .SH SYNTAX
 .B #include <io.h>
 
-void \fBio_fd\fP(int64 fd);
+int \fBio_fd\fP(int64 fd);
 .SH DESCRIPTION
 If you want to use io_canread() and io_canwrite() on a descriptor, you
 have to use io_wait() on it first, and io_wait() has to know which
@@ -15,5 +15,7 @@ io_pipe and io_socketpair already call io_fd for you.
 Waiting on descriptors only works for sockets, fifos and pipes.  It may
 also work on devices and TTYs, but that is platform dependent -- you
 should not rely on that.  It does not work on files.
+.SH "RETURN VALUE"
+io_fd returns 1 on success, 0 on error.
 .SH "SEE ALSO"
 io_wait(3), io_wantread(3), io_canread(3), io_eagain(3), io_nonblock(3)