From 2a16fc74fd354484a70efcc5b6dbfcdd73ee5f5a Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Thu, 27 Feb 2014 18:51:28 +0100
Subject: CompositeStorage: add method GetMount()
---
src/storage/CompositeStorage.cxx | 13 +++++++++++++
src/storage/CompositeStorage.hxx | 11 +++++++++++
2 files changed, 24 insertions(+)
(limited to 'src')
diff --git a/src/storage/CompositeStorage.cxx b/src/storage/CompositeStorage.cxx
index 9a27270df..ac6fcecd9 100644
--- a/src/storage/CompositeStorage.cxx
+++ b/src/storage/CompositeStorage.cxx
@@ -210,6 +210,19 @@ CompositeStorage::~CompositeStorage()
{
}
+Storage *
+CompositeStorage::GetMount(const char *uri)
+{
+ const ScopeLock protect(mutex);
+
+ auto result = FindStorage(uri);
+ if (*result.uri != 0)
+ /* not a mount point */
+ return nullptr;
+
+ return result.directory->storage;
+}
+
void
CompositeStorage::Mount(const char *uri, Storage *storage)
{
diff --git a/src/storage/CompositeStorage.hxx b/src/storage/CompositeStorage.hxx
index 9c10f76f4..3daa45ee3 100644
--- a/src/storage/CompositeStorage.hxx
+++ b/src/storage/CompositeStorage.hxx
@@ -95,6 +95,17 @@ public:
CompositeStorage();
virtual ~CompositeStorage();
+ /**
+ * Get the #Storage at the specified mount point. Returns
+ * nullptr if the given URI is not a mount point.
+ *
+ * The returned pointer is unprotected. No other thread is
+ * allowed to unmount the given mount point while the return
+ * value is being used.
+ */
+ gcc_pure gcc_nonnull_all
+ Storage *GetMount(const char *uri);
+
/**
* Call the given function for each mounted storage, including
* the root storage. Passes mount point URI and the a const
--
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