Add a shell helper function to wait for some command to succeed - typically
a test for something to be done by a background process. Use it in the
context code which waits for the guest to respond to ssh-over-vsock
connections.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Currently the context command dispatch subsystem creates a bunch of
temporary files in $LOGDIR, which is messy. Store them in $STATEDIR which
is for precisely this purpose. The logs from each context still go into
$LOGDIR.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Extends the context system in the test scripts to allow executing commands
within a guest. Do this without requiring an existing network in the guest
by using socat to run ssh via a vsock connection.
We do need some additional "sleep"s in the tests, because the new
faster dispatch means that sometimes we attempt to connect before
socat has managed to listen.
For now, only use this for the plain "passt" tests. The "passt_in_ns" and
other tests have additional complications we still need to deal with.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Extend the context system to allow commands to be run in a namespace
created with unshare, and use it for the namespace used in the pasta tests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
For the tests, we need to run commands in various contexts: in the host,
in a guest or in a namespace. Currently we do this by running each context
in a tmux pane, and using tmux commands to type the commands into the
relevant pane, then screen-scrape the output for the results if we need
them.
This is very fragile, because we have to make various assumptions to parse
the output. Those can break if a shell doesn't have the prompt we expect,
if the tmux pane is too small or in various other conditions.
This starts some library functions for a new "context" system, that
provides a common way to invoke commands in a given context, in a way that
properly preserves stdout, stderr and the process return code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
