tree e6655424e3e7e7a10adbb0b4d788b2e17eb19608
parent eaeaf60808d6b60fb17adbb8312039f9a7c1abe6
author Andre Przywara <andre.przywara@arm.com> 1559926880 +0100
committer Will Deacon <will.deacon@arm.com> 1560168985 +0100

list: Clean up ghost socket files

When kvmtool (or the host kernel) crashes or gets killed, we cannot
automatically remove the socket file we created for that VM.
A later call of "lkvm list" iterates over all those files and complains
about those "ghost socket files", as there is no one listening on
the other side. Also sometimes the automatic guest name generation
happens to generate the same name again, so an unrelated "lkvm run"
later complains and stops, which is bad for automation.

As the only code doing a listen() on this socket is kvmtool upon VM
*creation*, such an orphaned socket file will never come back to life,
so we can as well unlink() those sockets in the code. This spares the
user from doing it herself.
We keep the message in the code to notify the user of this.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>