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[Qemu-devel] [PATCH] script=no for the TUN/TAP net option
From: |
Jean-Christian de Rivaz |
Subject: |
[Qemu-devel] [PATCH] script=no for the TUN/TAP net option |
Date: |
Wed, 31 Jan 2007 15:42:07 +0100 |
User-agent: |
Mozilla Thunderbird 1.0.2 (X11/20061113) |
Hello,
The following small patch disable the execution of a script while using
the -net tap option with a already existing TUN/TAP interface.
So you can as root bring up a TUN/TAP interface to a user with the
command 'tunctl -u <user> -t <ifname>' and setup the routing. Then the
user don't need to sudo a script, it simply tell QEMU to use the
interface <ifname> with the option '-net nic -net
tap,ifname=<ifname>,script=no'.
Have a good day,
--
Jean-Christian de Rivaz
Index: qemu-doc.texi
===================================================================
RCS file: /sources/qemu/qemu/qemu-doc.texi,v
retrieving revision 1.125
diff -u -r1.125 qemu-doc.texi
--- qemu-doc.texi 28 Jan 2007 01:53:16 -0000 1.125
+++ qemu-doc.texi 31 Jan 2007 14:29:48 -0000
@@ -358,7 +358,8 @@
@item -net tap[,vlan=n][,fd=h][,ifname=name][,script=file]
Connect the host TAP network interface @var{name} to VLAN @var{n} and
use the network script @var{file} to configure it. The default
-network script is @file{/etc/qemu-ifup}. If @var{name} is not
+network script is @file{/etc/qemu-ifup}. Use @option{script=no} to
+disable script execution. If @var{name} is not
provided, the OS automatically provides one. @option{fd=h} can be
used to specify the handle of an already opened host TAP interface. Example:
Index: vl.c
===================================================================
RCS file: /sources/qemu/qemu/vl.c,v
retrieving revision 1.244
diff -u -r1.244 vl.c
--- vl.c 28 Jan 2007 01:53:16 -0000 1.244
+++ vl.c 31 Jan 2007 14:29:49 -0000
@@ -3289,7 +3289,7 @@
if (fd < 0)
return -1;
- if (!setup_script)
+ if (!setup_script || !strcmp(setup_script, "no"))
setup_script = "";
if (setup_script[0] != '\0') {
/* try to launch network init script */
@@ -6066,6 +6066,7 @@
"-net tap[,vlan=n][,fd=h][,ifname=name][,script=file]\n"
" connect the host TAP network interface to VLAN 'n'
and use\n"
" the network script 'file' (default=%s);\n"
+ " use 'script=no' to disable script execution;\n"
" use 'fd=h' to connect to an already opened TAP
interface\n"
#endif
"-net
socket[,vlan=n][,fd=h][,listen=[host]:port][,connect=host:port]\n"
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