diff options
| -rw-r--r-- | usr.bin/sup/src/supservers.8 | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/usr.bin/sup/src/supservers.8 b/usr.bin/sup/src/supservers.8 index 99cd0677651..ad775011bcb 100644 --- a/usr.bin/sup/src/supservers.8 +++ b/usr.bin/sup/src/supservers.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: supservers.8,v 1.3 1997/04/01 07:35:50 todd Exp $ +.\" $OpenBSD: supservers.8,v 1.4 1997/10/12 00:26:23 beck Exp $ .\" .\" Copyright (c) 1992 Carnegie Mellon University .\" All Rights Reserved. @@ -49,7 +49,9 @@ supfilesrv -P ] [ .I -C MaxChildren -] +] [ +.I -O lockdir +] .br supscan [ .I @@ -131,6 +133,21 @@ process for each client. If it gets additional requests it will respond with the error FSSETUPBUSY. The -C MaxChildren switch can be used to increase (or decrease) this number. + +The -O lockdir switch is used to make +.I supfilesrv +allow only one active connection at a time from any client ip address. +This is accomplished by each serving process obtaining exclusive lock, +and writing it's process ID into a file in "lockdir" where the filename +is the dotted decimal ip address of the connecting host. Any +connections from a client where a lock can not be obtained on such a file +will be rejected, limiting any client host to one connection at a time +to this sup server. This is useful for preventing problems where +clients running +.I sup +on a regular basis manage to time requests so that a second request +comes in before the first one completes. + .SH "SUPSCAN" It is possible to pre-compile a list of the files in a collection to make |