Add initial version of renumber backend

Renumber is a way of renumbering container locks after the number
of locks available has changed.

For now, renumber only works with containers.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

1 files changed, 9 insertions, 0 deletions

diff --git a/libpod/lock/in_memory_locks.go b/libpod/lock/in_memory_locks.go
index db8f20e95..7eb22328f 100644
--- a/libpod/lock/in_memory_locks.go
+++ b/libpod/lock/in_memory_locks.go
@@ -89,3 +89,12 @@ func (m *InMemoryManager) RetrieveLock(id uint32) (Locker, error) {
 
 	return m.locks[id], nil
 }
+
+// FreeAllLocks frees all locks
+func (m *InMemoryManager) FreeAllLocks() error {
+	for _, lock := range m.locks {
+		lock.allocated = false
+	}
+
+	return nil
+}