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Apply necessary changes to pkg/flatrpc and pkg/manager as well.
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We query globs for 2 reasons:
1. Expand glob types in syscall descriptions.
2. Dynamic file probing for automatic descriptions generation.
In both of these contexts are are interested in files
that will be present during test program execution
(rather than normal unsandboxed execution).
For example, some files may not be accessible to test programs
after pivot root. On the other hand, we create and link
some additional files for the test program that don't
normally exist.
Add a new request type for querying of globs that are
executed in the test program context.
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Few assorted changes to reduce future diffs:
- add rpcserver.RemoteConfig similar to LocalConfig
(there are too many parameters)
- add CheckGlobs to requesting additional globs from VMs
- pass whole InfoRequest to the MachineChecked callback
so that it's possible to read globs information
- add per-mode config checking in the manager
- add Manager.saveJson helper
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./tools/syz-env make generate
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Added more test coverage of the package and created an interface of
rpcserver to use it as the dependency (for syz-manager).
Also tried to cover with tests a private method handleConn(),
though it calls handleRunnerConn which has a separate logic in
Handshake(), which within handleConn() unit test we should've mocked.
This will require a refactoring of `runners map[int]*Runner` and
runner.go in general with a separate interface which we can mock as
well.
General idea is to have interfaces of Server (rpc), Runner etc. and mock a
compound logic like Handshake during a separate public (or private if it
has callable, if-else logic) method unit-testing.
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