Hi,
This patch adds skeleton of functionality for file system hierarchy checking.
With the best regards,
Vyacheslav Dubeyko.
--
From: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
Subject: [PATCH v4 12/15] nilfs-utils: fsck: add skeleton of functionality for file system hierarchy checking
This patch adds skeleton of functionality for file system hierarchy checking.
Signed-off-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
---
sbin/fsck/nilfs_fs_hierarchy.c | 73 ++++++++++++++++++++++++++++++++++++++++
sbin/fsck/nilfs_fs_hierarchy.h | 38 +++++++++++++++++++++
2 files changed, 111 insertions(+)
create mode 100644 sbin/fsck/nilfs_fs_hierarchy.c
create mode 100644 sbin/fsck/nilfs_fs_hierarchy.h
diff --git a/sbin/fsck/nilfs_fs_hierarchy.c b/sbin/fsck/nilfs_fs_hierarchy.c
new file mode 100644
index 0000000..02570c1
--- /dev/null
+++ b/sbin/fsck/nilfs_fs_hierarchy.c
@@ -0,0 +1,73 @@
+/*
+ * nilfs_fs_hierarchy.c - NILFS file system hierarchy checking, processing
+ * and recovering operations implementation
+ *
+ * Copyright (C) 2012 Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ *
+ * This file is part of NILFS.
+ *
+ * NILFS 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.
+ *
+ * NILFS 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 NILFS; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Written by Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ */
+
+#include "fsck_common.h"
+#include "fsck_raw_ops.h"
+
+#include "nilfs_fs_hierarchy.h"
+
+/*****************************************************************************
+ * FUNCTIONS DECLARATION
+ *****************************************************************************/
+
+/*****************************************************************************
+ * IMPLEMENTATION SECTION
+ *****************************************************************************/
+
+/*****************************************************************************
+ * NAME: fs_hierarchy_check_for_snapshot (fsck.nilfs2)
+ *
+ * FUNCTION: It checks validity of file system hierarchy for snapshot number.
+ * It means that it takes into account all changes were made
+ * before (and inclusive) requested snapshot. This function builds
+ * block bitmap on the basis of inodes info. Also it builds
+ * inode bitmap on the basis of hierarchy tree traversing.
+ *
+ * PARAMETERS:
+ * @snapshot: Snapshot number for check.
+ *
+ * RETURNS:
+ * NILFS_OK - File system hierarchy was checked successfully.
+ * %-CANNOT_CHECK_FS_HIERARCHY - FS hierarchy checking fails.
+ * %-INVALID_PARAMETER - Input parameters are invalid.
+ */
+int fs_hierarchy_check_for_snapshot(__u64 snapshot)
+{
+ int err = NILFS_OK;
+
+ internal_debug("begin to check fs hierarchy: %lld.", snapshot);
+
+ /*if (UNDEFINED_SNAPSHOT == snapshot ||
+ snapshot > last_snapshot_number()) {
+ internal_debug("%s",
+ nilfs_message[INVALID_PARAMETER]);
+ return -INVALID_PARAMETER;
+ }*/
+
+ /*internal_info("<%s>: %s", __func__, nilfs_message[NOT_IMPLEMENTED]);*/
+
+ /* <TODO: implement> */
+ return err;
+} /* fs_hierarchy_check_for_snapshot() */
diff --git a/sbin/fsck/nilfs_fs_hierarchy.h b/sbin/fsck/nilfs_fs_hierarchy.h
new file mode 100644
index 0000000..e7f1370
--- /dev/null
+++ b/sbin/fsck/nilfs_fs_hierarchy.h
@@ -0,0 +1,38 @@
+/*
+ * nilfs_fs_hierarchy.h - Declarations of operations for NILFS file system
+ * hierarchy checking, processing and recovering
+ *
+ * Copyright (C) 2012 Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ *
+ * This file is part of NILFS.
+ *
+ * NILFS 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.
+ *
+ * NILFS 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 NILFS; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Written by Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
+ */
+
+#ifndef NILFS_FS_HIERARCHY_H
+#define NILFS_FS_HIERARCHY_H
+
+/*
+ * It checks validity of file system hierarchy for snapshot number.
+ * It means that it takes into account all changes were made
+ * before (and inclusive) requested snapshot. This function builds
+ * block bitmap on the basis of inodes info. Also it builds
+ * inode bitmap on the basis of hierarchy tree traversing.
+ */
+int fs_hierarchy_check_for_snapshot(__u64 snapshot);
+
+#endif /* NILFS_FS_HIERARCHY_H */
--
1.7.9.5
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