Add the HideUnknown mapper

This mapper hides inodes for which the user and/or group cannot be mapped to local entries

1 files changed, 36 insertions, 0 deletions

diff --git a/netfs/fuse/fuseMappersImpl.cpp b/netfs/fuse/fuseMappersImpl.cpp
new file mode 100644
index 0000000..9a99eca
--- /dev/null
+++ b/netfs/fuse/fuseMappersImpl.cpp
@@ -0,0 +1,36 @@
+#include "fuseMappersImpl.h"
+#include <entCache.h>
+
+namespace NetFS::Client {
+	HideUnknownMapperImpl::HideUnknownMapperImpl() :
+		HideUnknownMapperImpl(std::make_shared<EntCache<User>>(), std::make_shared<EntCache<Group>>())
+	{
+	}
+
+	HideUnknownMapperImpl::HideUnknownMapperImpl(EntryResolverPtr<User> u, EntryResolverPtr<Group> g) :
+		users(std::move(u)), groups(std::move(g))
+	{
+	}
+
+	Mapping::FileSystem
+	HideUnknownMapperImpl::mapTransport(const std::string & un, const std::string & gn)
+	{
+		auto u = users->getEntry(un);
+		auto g = groups->getEntry(gn);
+		if (!u || !g) {
+			return {0, 0, 0xFFFFFFF};
+		}
+		return {static_cast<int>(u->id), static_cast<int>(g->id), 0};
+	}
+
+	Mapping::Transport
+	HideUnknownMapperImpl::mapFileSystem(int uid, int gid)
+	{
+		auto u = users->getEntry(uid);
+		auto g = groups->getEntry(gid);
+		if (!u || !g) {
+			throw NetFS::SystemError(EPERM);
+		}
+		return {u->name, g->name, 0};
+	}
+}