Add EXT2 stub
diff --git a/include/kernel/dri/fs/ext2/ext2.h b/include/kernel/dri/fs/ext2/ext2.h
new file mode 100644
index 0000000..a94fb77
--- /dev/null
+++ b/include/kernel/dri/fs/ext2/ext2.h
@@ -0,0 +1,81 @@
+#pragma once
+
+#include <vfs.h>
+
+struct ext2_superblock
+{
+ // Total number of inodes
+ uint total_inodes;
+ // Total number of blocks
+ uint total_blocks;
+ // Number of blocks reserved for superuser
+ uint blocks_reserved_for_superuser;
+ // Number of unallocated blocks
+ uint unallocated_blocks;
+ // Number of unallocated inodes
+ uint unallocated_inodes;
+ // Block number containing the superblock
+ uint superblock_block_number;
+ // the number to shift 1024 to the left by to get the block size
+ uint block_size_shift;
+ // the number to shift 1024 to the left by to get the fragment size
+ uint fragment_size_shift;
+ // Number of blocks in one block group
+ uint blocks_per_block_group;
+ // Number of fragments in one block group
+ uint fragments_per_block_group;
+ // Number of inodse in one block group
+ uint inodes_per_block_group;
+ // UNIX time of last mount
+ uint last_mount_time;
+ // UNIX time of last write
+ uint last_write_time;
+ // Number of mounts since last consistency check
+ ushort mounts_since_last_fsck;
+ // Number of mounts allowed between consistency checks
+ ushort mounts_allowed_before_fsck;
+ // EXT2 signature, should be 0xef53
+ ushort signature;
+ // File system state, see enum ext2_fs_state
+ ushort state;
+ // What to do in case of an error, see enum ext2_error_case
+ ushort error_case;
+ // Minor portion of version
+ ushort version_minor;
+ // UNIX time of last consistency check
+ uint last_fsck_time;
+ // Max time between consistency checks
+ uint fsck_time_interval;
+ // Operating system ID of creator
+ uint creator_os_id;
+ // Major portion of version
+ uint version_major;
+ // User ID that can use reserved blocks
+ ushort reserved_blocks_uid;
+ // Group ID that can use reserved blocks
+ ushort reserved_blocks_gid;
+};
+
+enum ext2_fs_state
+{
+ EXT2_STATE_CLEAN = 1,
+ EXT2_STATE_ERRORS = 2,
+};
+
+enum ext2_error_case
+{
+ EXT2_ERROR_IGNORE = 1,
+ EXT2_ERROR_REMOUNT = 2,
+ EXT2_ERROR_KPANIC = 3,
+};
+
+enum ext2_os_id
+{
+ EXT2_OS_LINUX = 0,
+ EXT2_OS_HURD,
+ EXT2_OS_MASIX,
+ EXT2_OS_FREEBSD,
+ EXT2_OS_OTHER_BSD,
+};
+
+void ext2_mount(struct fs_node *where);