Database*: move to db/

src/db/update/UpdateIO.cxx

@@ -0,0 +1,113 @@
+/*
+ * 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/Directory.hxx"
+#include "Mapper.hxx"
+#include "fs/AllocatedPath.hxx"
+#include "fs/FileSystem.hxx"
+#include "Log.hxx"
+
+#include <errno.h>
+#include <unistd.h>
+
+int
+stat_directory(const Directory &directory, struct stat *st)
+{
+	const auto path_fs = map_directory_fs(directory);
+	if (path_fs.IsNull())
+		return -1;
+
+	if (!StatFile(path_fs, *st)) {
+		int error = errno;
+		const std::string path_utf8 = path_fs.ToUTF8();
+		FormatErrno(update_domain, error,
+			    "Failed to stat %s", path_utf8.c_str());
+		return -1;
+	}
+
+	return 0;
+}
+
+int
+stat_directory_child(const Directory &parent, const char *name,
+		     struct stat *st)
+{
+	const auto path_fs = map_directory_child_fs(parent, name);
+	if (path_fs.IsNull())
+		return -1;
+
+	if (!StatFile(path_fs, *st)) {
+		int error = errno;
+		const std::string path_utf8 = path_fs.ToUTF8();
+		FormatErrno(update_domain, error,
+			    "Failed to stat %s", path_utf8.c_str());
+		return -1;
+	}
+
+	return 0;
+}
+
+bool
+directory_exists(const Directory &directory)
+{
+	const auto path_fs = map_directory_fs(directory);
+	if (path_fs.IsNull())
+		/* invalid path: cannot exist */
+		return false;
+
+	return directory.device == DEVICE_INARCHIVE ||
+		directory.device == DEVICE_CONTAINER
+		? FileExists(path_fs)
+		: DirectoryExists(path_fs);
+}
+
+bool
+directory_child_is_regular(const Directory &directory,
+			   const char *name_utf8)
+{
+	const auto path_fs = map_directory_child_fs(directory, name_utf8);
+	if (path_fs.IsNull())
+		return false;
+
+	return FileExists(path_fs);
+}
+
+bool
+directory_child_access(const Directory &directory,
+		       const char *name, int mode)
+{
+#ifdef WIN32
+	/* CheckAccess() is useless on WIN32 */
+	(void)directory;
+	(void)name;
+	(void)mode;
+	return true;
+#else
+	const auto path = map_directory_child_fs(directory, name);
+	if (path.IsNull())
+		/* something went wrong, but that isn't a permission
+		   problem */
+		return true;
+
+	return CheckAccess(path, mode) || errno != EACCES;
+#endif
+}