From bc1212faf2f23ee5e846e6322edd86c1af481aab Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Sun, 8 Mar 2020 14:49:34 +0100
Subject: 9p(2): document the filedescriptor sharing behaviour of
 postmountsrv()

---
 sys/man/2/9p | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/sys/man/2/9p b/sys/man/2/9p
index c1c75fd61..da521636d 100644
--- a/sys/man/2/9p
+++ b/sys/man/2/9p
@@ -202,14 +202,21 @@ or
 (see
 .IR thread (2)),
 using the
-.BR RFFDG ,
-.BR RFNOTEG ,
-.BR RFNAMEG ,
+.B RFNOTEG
 and
-.BR RFMEM
+.B RFNAMEG
 flags.
-The child process
-calls
+.IP
+The child process then waits for the parent to copy its
+file descripor table via
+.I rfork
+using
+.B RFFDG
+flag. This way, the service loop will share the original
+file descriptor table with previously created child
+processes of the caller.
+.IP
+The child process then calls
 .IB close( s -> srvfd )
 and then
 .IB srv( s ) \fR;
-- 
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