Clarify that scripts are called synchronously.

diff --git a/doc/tinc.conf.5.in b/doc/tinc.conf.5.in
index d1b267302d18e282d95d49b178179d287ac46006..2a1a09bf985e53019d1ef674d3e115836c7e4ac6 100644 (file)
--- a/doc/tinc.conf.5.in
+++ b/doc/tinc.conf.5.in
@@ -556,7 +556,15 @@ UDP is possible or not.
 .Sh SCRIPTS
 Apart from reading the server and host configuration files,
 tinc can also run scripts at certain moments.
-Under Windows (not Cygwin), the scripts should have the extension
+Below is a list of filenames of scripts and a description of when they are run.
+A script is only run if it exists and if it is executable.
+.Pp
+Scripts are run synchronously;
+this means that tinc will temporarily stop processing packets until the called script finishes executing.
+This guarantees that scripts will execute in the exact same order as the events that trigger them.
+If you need to run commands asynchronously, you have to ensure yourself that they are being run in the background.
+.Pp
+Under Windows (not Cygwin), the scripts must have the extension
 .Pa .bat .
 .Bl -tag -width indent
 .It Pa @sysconfdir@/tinc/ Ns Ar NETNAME Ns Pa /tinc-up
@@ -564,6 +572,7 @@ This is the most important script.
 If it is present it will be executed right after the tinc daemon has been started and has connected to the virtual network device.
 It should be used to set up the corresponding network interface,
 but can also be used to start other things.
+.Pp
 Under Windows you can use the Network Connections control panel instead of creating this script.
 .It Pa @sysconfdir@/tinc/ Ns Ar NETNAME Ns Pa /tinc-down
 This script is started right before the tinc daemon quits.

diff --git a/doc/tinc.texi b/doc/tinc.texi
index 608077f1cf63ced44aee51f78e99025b195ead49..2edf427191e63e1eb65b66b71476de2e0fb9eabd 100644 (file)
--- a/doc/tinc.texi
+++ b/doc/tinc.texi
@@ -1256,7 +1256,15 @@ UDP is possible or not.
 @cindex scripts
 Apart from reading the server and host configuration files,
 tinc can also run scripts at certain moments.
-Under Windows (not Cygwin), the scripts should have the extension .bat.
+Below is a list of filenames of scripts and a description of when they are run.
+A script is only run if it exists and if it is executable.
+
+Scripts are run synchronously;
+this means that tinc will temporarily stop processing packets until the called script finishes executing.
+This guarantees that scripts will execute in the exact same order as the events that trigger them.
+If you need to run commands asynchronously, you have to ensure yourself that they are being run in the background.
+
+Under Windows (not Cygwin), the scripts must have the extension .bat.
 
 @table @file
 @cindex tinc-up
@@ -1266,6 +1274,7 @@ If it is present it will be executed right after the tinc daemon has been
 started and has connected to the virtual network device.
 It should be used to set up the corresponding network interface,
 but can also be used to start other things.
+
 Under Windows you can use the Network Connections control panel instead of creating this script.
 
 @cindex tinc-down