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Reorder steps in RPC service example

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Also add a shell prompt character
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pierwill 2019-08-12 11:36:20 -05:00
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developer/services/qrexec.md
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@ -237,20 +237,23 @@ The code for this file is:
echo $(($arg1+$arg2)) # print to stdout, which is passed to the RPC client echo $(($arg1+$arg2)) # print to stdout, which is passed to the RPC client
We'll need to create a service called `test.Add` with its own definition and policy file in dom0. We'll need to create a service called `test.Add` with its own definition and policy file in dom0.
In dom0 add the following test to `/etc/qubes-rpc/policy/test.Add`:
$anyvm $anyvm ask
Now we need to define what the service does. Now we need to define what the service does.
In this case, it should call our additing script. In this case, it should call our addition script.
We define the service with another one-line file, `/etc/qubes-rpc/test.Add`: We define the service with another one-line file, `/etc/qubes-rpc/test.Add`:
/usr/bin/our_test_add_server /usr/bin/our_test_add_server
The adminstrative domain will direct traffic based on the current RPC policies.
In dom0, create a file at `/etc/qubes-rpc/policy/test.Add` containing the following:
$anyvm $anyvm ask
This will allow our client and server to communicate.
Before we make the call, ensure that the client and server scripts have executable permissions. Before we make the call, ensure that the client and server scripts have executable permissions.
Now, invoke the RPC service! Finally, invoke the RPC service.
qrexec-client-vm anotherVM test.Add /usr/bin/our_test_add_client 1 2 $ qrexec-client-vm anotherVM test.Add /usr/bin/our_test_add_client 1 2
We should get "3" as answer. We should get "3" as answer.
(dom0 will ask for confirmation first.) (dom0 will ask for confirmation first.)