sysroot: Add a try_lock() API

The blocking locking API wasn't sufficient for use in the rpm-ostree
daemon; it really wants to know if the lock is held, then continue to
do other things (like service DBus requests), and get notification
when the lock is available.

We also add an async variant that can be called if the lock is not
available.

Implement a higher level "loop until lock is available" method in the
`ostree admin` commandline.

1 files changed, 0 insertions, 0 deletions

diff --git a/libglnx b/libglnx
-Subproject cf8ae27bab717621f1edf8ab6ae3dd89da4d8d4
+Subproject 900b25f7018878ab64bd04751d8f15c6d83ba82