fs/ntfs3: Mark ntfs dirty when on-disk struct is corrupted

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Author: aalexandrovich

fs/ntfs3/fsntfs.c

@@ -178,7 +178,7 @@ int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
 	/* Check errors. */
 	if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
 	    fn * SECTOR_SIZE > bytes) {
-		return -EINVAL; /* Native chkntfs returns ok! */
+		return -E_NTFS_CORRUPT;
 	}
 
 	/* Get fixup pointer. */

fs/ntfs3/index.c

@@ -1113,6 +1113,12 @@ int indx_read(struct ntfs_index *indx, struct ntfs_inode *ni, CLST vbn,
 	*node = in;
 
 out:
+	if (err == -E_NTFS_CORRUPT) {
+		ntfs_inode_err(&ni->vfs_inode, "directory corrupted");
+		ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+		err = -EINVAL;
+	}
+
 	if (ib != in->index)
 		kfree(ib);
 

fs/ntfs3/ntfs_fs.h

@@ -53,6 +53,8 @@ enum utf16_endian;
 #define E_NTFS_NONRESIDENT		556
 /* NTFS specific error code about punch hole. */
 #define E_NTFS_NOTALIGNED		557
+/* NTFS specific error code when on-disk struct is corrupted. */
+#define E_NTFS_CORRUPT			558
 
 
 /* sbi->flags */

fs/ntfs3/record.c

@@ -180,6 +180,12 @@ int mi_read(struct mft_inode *mi, bool is_mft)
 	return 0;
 
 out:
+	if (err == -E_NTFS_CORRUPT) {
+		ntfs_err(sbi->sb, "mft corrupted");
+		ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+		err = -EINVAL;
+	}
+
 	return err;
 }