ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/fs/befs/inode.c b/marvell/linux/fs/befs/inode.c
new file mode 100644
index 0000000..791b46a
--- /dev/null
+++ b/marvell/linux/fs/befs/inode.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * inode.c
+ *
+ * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>
+ */
+
+#include <linux/fs.h>
+
+#include "befs.h"
+#include "inode.h"
+
+/*
+ * Validates the correctness of the befs inode
+ * Returns BEFS_OK if the inode should be used, otherwise
+ * returns BEFS_BAD_INODE
+ */
+int
+befs_check_inode(struct super_block *sb, befs_inode *raw_inode,
+ befs_blocknr_t inode)
+{
+ u32 magic1 = fs32_to_cpu(sb, raw_inode->magic1);
+ befs_inode_addr ino_num = fsrun_to_cpu(sb, raw_inode->inode_num);
+ u32 flags = fs32_to_cpu(sb, raw_inode->flags);
+
+ /* check magic header. */
+ if (magic1 != BEFS_INODE_MAGIC1) {
+ befs_error(sb,
+ "Inode has a bad magic header - inode = %lu",
+ (unsigned long)inode);
+ return BEFS_BAD_INODE;
+ }
+
+ /*
+ * Sanity check2: inodes store their own block address. Check it.
+ */
+ if (inode != iaddr2blockno(sb, &ino_num)) {
+ befs_error(sb, "inode blocknr field disagrees with vfs "
+ "VFS: %lu, Inode %lu", (unsigned long)
+ inode, (unsigned long)iaddr2blockno(sb, &ino_num));
+ return BEFS_BAD_INODE;
+ }
+
+ /*
+ * check flag
+ */
+
+ if (!(flags & BEFS_INODE_IN_USE)) {
+ befs_error(sb, "inode is not used - inode = %lu",
+ (unsigned long)inode);
+ return BEFS_BAD_INODE;
+ }
+
+ return BEFS_OK;
+}