1 files changed, 106 insertions, 0 deletions
diff --git a/src/db/update/UpdateIO.cxx b/src/db/update/UpdateIO.cxx
new file mode 100644
index 000000000..fa19a8b5a
--- /dev/null
+++ b/src/db/update/UpdateIO.cxx
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h" /* must be first for large file support */
+#include "UpdateIO.hxx"
+#include "UpdateDomain.hxx"
+#include "db/plugins/simple/Directory.hxx"
+#include "storage/FileInfo.hxx"
+#include "storage/StorageInterface.hxx"
+#include "fs/Traits.hxx"
+#include "fs/FileSystem.hxx"
+#include "util/Error.hxx"
+#include "Log.hxx"
+
+#include <errno.h>
+#include <unistd.h>
+
+bool
+GetInfo(Storage &storage, const char *uri_utf8, FileInfo &info)
+{
+	Error error;
+	bool success = storage.GetInfo(uri_utf8, true, info, error);
+	if (!success)
+		LogError(error);
+	return success;
+}
+
+bool
+GetInfo(StorageDirectoryReader &reader, FileInfo &info)
+{
+	Error error;
+	bool success = reader.GetInfo(true, info, error);
+	if (!success)
+		LogError(error);
+	return success;
+}
+
+bool
+DirectoryExists(Storage &storage, const Directory &directory)
+{
+	FileInfo info;
+	if (!storage.GetInfo(directory.GetPath(), true, info, IgnoreError()))
+		return false;
+
+	return directory.device == DEVICE_INARCHIVE ||
+		directory.device == DEVICE_CONTAINER
+		? info.IsRegular()
+		: info.IsDirectory();
+}
+
+static bool
+GetDirectoryChildInfo(Storage &storage, const Directory &directory,
+		      const char *name_utf8, FileInfo &info, Error &error)
+{
+	const auto uri_utf8 = PathTraitsUTF8::Build(directory.GetPath(),
+						    name_utf8);
+	return storage.GetInfo(uri_utf8.c_str(), true, info, error);
+}
+
+bool
+directory_child_is_regular(Storage &storage, const Directory &directory,
+			   const char *name_utf8)
+{
+	FileInfo info;
+	return GetDirectoryChildInfo(storage, directory, name_utf8, info,
+				     IgnoreError()) &&
+		info.IsRegular();
+}
+
+bool
+directory_child_access(Storage &storage, const Directory &directory,
+		       const char *name, int mode)
+{
+#ifdef WIN32
+	/* CheckAccess() is useless on WIN32 */
+	(void)storage;
+	(void)directory;
+	(void)name;
+	(void)mode;
+	return true;
+#else
+	const auto path = storage.MapChildFS(directory.GetPath(), name);
+	if (path.IsNull())
+		/* does not point to local file: silently ignore the
+		   check */
+		return true;
+
+	return CheckAccess(path, mode) || errno != EACCES;
+#endif
+}