The qemu.run() method can break when a command happens to output the
string "# " to stdout. This is because qemu.run() detects when a command
has completed by searching for the shell prompt, which by default is
"# ". It then captures everything before the "# " as the commands
output, causing the rest of output to be lost.
Instead use the pexpect libraries REPLWrapper to handle running
commands. It has hooks to set a custom prompt and avoid some other
pitfalls of wrapping a shell.
We unfortunately can't reuse replwrap._repl_sh directly, because it
tries to spawn a command while we already have a qemu started. So we
need to copy that code into _repl_sh_child. While we're at it, also
define our own prompt strings.
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
[Arnout:
- Make all arguments to _repl_sh_spawn non-optional.
- Move non_printable_insert to a local variable instead of an argument,
we don't need to override it.
- Copy the comment from _repl_sh that explains why non_printable_insert
is needed.
- Add a comment about timeouts.
- Rename spawn to child (we don't actually spawn anything so this felt
more natural, even though the class
- Use single quotes instead of triple quotes, and explicitly escape the
nested quotes.
]
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit 0cad947b964be5612a182413da136fcf0dc5a1f2)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
4b19a190a2