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This is less ambiguous, and more accurately describes the purpose of the package.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This enables instrumented testing of the shim.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This package will also hold syscall lookup tables for seccomp.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This was added to reduce the size of diffs.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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The shim is an implementation detail and should not be mentioned in the API.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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These are now considered stable, defined behaviour and can be used by external programs to determine shim outcome.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is useful for testing.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is cleaner and less error-prone, and should also result in negligibly less memory allocation.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This package is quite useful. This change allows it to be imported without importing container.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This significantly decreases ipc overhead.
Closes #3.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This allows holding the bits without cgo.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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These values are considered part of the stable, exported API, so move them to hst.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This value is applied to the shim, it is incorrect to offset the base value as well.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is the initial effort of splitting up host and container side of finalisation for params to shim. The new layout also enables much finer grained unit testing of each step, as well as partition access to per-app state for each step.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This frees all container instances of side effects.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This catches cases where the shim has somehow locked up, so it should wait out the full shim WaitDelay as well.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This was a stopgap solution that lasted for way too long. This finally removes it and prepares internal/app for some major changes.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This helps indicate the exact origin and nature of the error. This eliminates generic WrapErr from container.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This further cleans up the package for the restructure.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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Signed-off-by: Ophestra <cat@gensokyo.uk>
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The names are ambiguous. Rename them to make more sense.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This does not necessarily reduce attack surface but does not affect functionality or introduce any side effects, so is nice to have.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This ensures a signal gets delivered to the process instead of relying on parent death behaviour.
SIGCONT was chosen as it is the only signal an unprivileged process is allowed to send to processes with different credentials.
A custom signal handler is installed because the Go runtime does not expose signal information other than which signal was received, and shim must check pid to ensure reasonable behaviour.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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Signed-off-by: Ophestra <cat@gensokyo.uk>
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Both machinectl and sudo launch methods launch shim as shim is now responsible for setting up the sandbox. Various app structures are adapted to accommodate bwrap configuration and mediated wayland access.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
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There was an earlier attempt of cleaning up the app package however it ended up creating even more of a mess and the code structure largely still looked like Ego with state setup scattered everywhere and a bunch of ugly hacks had to be implemented to keep track of all of them. In this commit the entire app package is rewritten to track everything that has to do with an app in one thread safe value.
In anticipation of the client/server split also made changes:
- Console messages are cleaned up to be consistent
- State tracking is fully rewritten to be cleaner and usable for multiple process and client/server
- Encapsulate errors to easier identify type of action causing the error as well as additional info
- System-level setup operations is grouped in a way that can be collectively committed/reverted
and gracefully handles errors returned by each operation
- Resource sharing is made more fine-grained with PID-scoped resources whenever possible,
a few remnants (X11, Wayland, PulseAudio) will be addressed when a generic proxy is available
- Application setup takes a JSON-friendly config struct and deterministically generates system setup operations
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
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