diff options
| author | Alexander Graf <agraf@suse.de> | 2012-06-03 09:45:01 +0200 |
|---|---|---|
| committer | Jan Kiszka <jan.kiszka@siemens.com> | 2012-07-09 17:38:13 +0200 |
| commit | b412eb61bfd400ad70afe11ac3a5fb2931124804 (patch) | |
| tree | ec26aa65bc9e099f2c0328e6209e45d2cb14b173 /qemu-options.hx | |
| parent | 1cb1c5d10bb9e180bd3f7be2c10b212ed86a97b4 (diff) | |
slirp: add 'cmd:' target for guestfwd
When using guestfwd=, Qemu only connects the virtual server's TCP port
to a single chardev. This is useless in most cases, as we usually want
to have more than a single connection from the guest to the outside world.
This patch adds a new cmd: target to guestfwd= that allows for execution
of a command on every TCP connection. This leverages the same code as
the -smb parameter, just that here the command is user defined.
Reported-by: Sascha Wilde <wilde@intevation.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 8b662648ae..ecf7ca12d7 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1421,8 +1421,28 @@ Then when you use on the host @code{telnet localhost 5555}, you connect to the guest telnet server. @item guestfwd=[tcp]:@var{server}:@var{port}-@var{dev} +@item guestfwd=[tcp]:@var{server}:@var{port}-@var{cmd:command} Forward guest TCP connections to the IP address @var{server} on port @var{port} -to the character device @var{dev}. This option can be given multiple times. +to the character device @var{dev} or to a program executed by @var{cmd:command} +which gets spawned for each connection. This option can be given multiple times. + +You can either use a chardev directly and have that one used throughout Qemu's +lifetime, like in the following example: + +@example +# open 10.10.1.1:4321 on bootup, connect 10.0.2.100:1234 to it whenever +# the guest accesses it +qemu -net user,guestfwd=tcp:10.0.2.100:1234-tcp:10.10.1.1:4321 [...] +@end example + +Or you can execute a command on every TCP connection established by the guest, +so that Qemu behaves similar to an inetd process for that virtual server: + +@example +# call "netcat 10.10.1.1 4321" on every TCP connection to 10.0.2.100:1234 +# and connect the TCP stream to its stdin/stdout +qemu -net 'user,guestfwd=tcp:10.0.2.100:1234-cmd:netcat 10.10.1.1 4321' +@end example @end table |