To ensure the Windows and OS X remote clients can properly parse
container stop signal (when given as a name e.g. SIGTERM) and
set it in SpecGen, we need access to a list of Linux signal names
and the numbers they map to that is available on non-Linux OSes.
Fortunately, these are ABI constants that are extremely unlikely
to change, so we can just take the existing constant definitions
from the library and use them.
The signal numbers used here are sourced from AMD64, but should
be the same for every architecture that is not Alpha, SPARC,
MIPS, and PA-RISC. So `podman run --stop-signal SIGTTOU` from a
Windows client to a Podman service on a SPARC host will set an
incorrect stop signal, but I don't think this is a large problem.
Signed-off-by: Matthew Heon <mheon@redhat.com>
Add pkg/signal to deal with parts of signal processing and translating
signals from string to numeric representations. The code has been
copied from docker/docker (and attributed with the copyright) but been
reduced to only what libpod needs (on Linux).
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
