ext4: add read_only parameter to ext4_mount routine.

Now users can mount a filesystem as read-only mode explicitly.

3 files changed, 9 insertions, 2 deletions

diff --git a/include/ext4.h b/include/ext4.h
index 4bf31ac..bf6e101 100644
--- a/include/ext4.h
+++ b/include/ext4.h
@@ -122,9 +122,12 @@ int ext4_device_register(struct ext4_blockdev *bd, struct ext4_bcache *bc,
  *          -   /
  *          -   /my_partition/
  *          -   /my_second_partition/
+ * @param   read_only mount as read-only mode.
  *
  * @return standard error code */
-int ext4_mount(const char *dev_name, const char *mount_point);
+int ext4_mount(const char *dev_name,
+	       const char *mount_point,
+	       bool read_only);
 
 /**@brief   Umount operation.
  * @param   mount_point mount name
diff --git a/include/ext4_fs.h b/include/ext4_fs.h
index 97e1d1d..473929d 100644
--- a/include/ext4_fs.h
+++ b/include/ext4_fs.h
@@ -93,9 +93,11 @@ static inline ext4_fsblk_t ext4_fs_first_bg_block_no(struct ext4_sblock *s,
 /**@brief Initialize filesystem and read all needed data.
  * @param fs Filesystem instance to be initialized
  * @param bdev Identifier if device with the filesystem
+ * @param read_only Mark the filesystem as read-only.
  * @return Error code
  */
-int ext4_fs_init(struct ext4_fs *fs, struct ext4_blockdev *bdev);
+int ext4_fs_init(struct ext4_fs *fs, struct ext4_blockdev *bdev,
+		 bool read_only);
 
 /**@brief Destroy filesystem instance (used by unmount operation).
  * @param fs Filesystem to be destroyed
diff --git a/include/ext4_types.h b/include/ext4_types.h
index 41cb33f..ca3a8c2 100644
--- a/include/ext4_types.h
+++ b/include/ext4_types.h
@@ -303,6 +303,8 @@ struct ext4_sblock {
 #endif
 
 struct ext4_fs {
+	bool read_only;
+
 	struct ext4_blockdev *bdev;
 	struct ext4_sblock sb;