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>
Just returning an error after a successful call of commit will leave garbage behind with no way for the caller to clean them. This change ensures revert is always called after successful commit with at least per-process state enabled.
Signed-off-by: Ophestra <cat@gensokyo.uk>
This is yet another implementation detail from before system.I, getting rid of this vastly cuts down on redundant seal state.
Signed-off-by: Ophestra <cat@gensokyo.uk>
