Orion

diff --git a/vfs/ext2fs/super.c b/vfs/ext2fs/super.c
new file mode 100644
index 0000000..98ca800
--- /dev/null
+++ b/vfs/ext2fs/super.c
@@ -0,0 +1,89 @@
+/*
+ * This file controls the superblock for Ext2FS.  It supports mounting new
+ * Ext2FS filesystems.  The VFS will use the calls here when dealing directly
+ * with the filesystem structure.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/mount.h>
+#include "fs.h"
+#include "../vfs.h"
+#include "../inode.h"
+#include "../super.h"
+#include "../../mem/heap.h"
+#include "../../task/task.h"
+#include "../../screen.h"
+
+Inode *ext2fs_mount(FileSystemType *type, int flags,
+                      const char *dev, void *data);
+Inode *ext2fs_alloc_inode(SuperBlock *sb);
+
+FileSystemType ext2fsType = {
+	.name = "Ext2FS",
+	.mount = ext2fs_mount,
+};
+
+SuperOps ext2fsSuperOps = {
+	.alloc_inode = ext2fs_alloc_inode,
+};
+
+/* Mount a Ext2FS instance */
+Inode *
+ext2fs_mount(FileSystemType *type, int flags, const char *dev, void *data)
+{
+	if (type != &ext2fsType)
+		return NULL;
+
+	int fd = open(dev, O_RDONLY);
+	if (fd < 0)
+		return (void *) fd;
+	File *back = file_get(current->files->fd[fd]);
+	close(fd);
+	if (!S_ISBLK(back->mode)) {
+		file_put(back);
+		return (void *) -ENOTBLK;
+	}
+
+	Ext2Super *rsuper = kmalloc(sizeof(Ext2Super));
+	back->pos = 1024;
+	file_read(back, (char *) rsuper, sizeof(Ext2Super));
+	if (rsuper->signature != 0xEF53) {
+		kprintf("Error while mounting %s: Not an Ext2FS drive", dev);
+		file_put(back);
+		kfree(rsuper);
+		return (void *) -EINVAL;
+	}
+	if (rsuper->requiredFeatures & 0x01) {
+		kprintf("Cannot mount %s: Compression required", dev);
+		file_put(back);
+		kfree(rsuper);
+		return (void *) -EINVAL;
+	}
+	if ((rsuper->writableFeatures & 0x02) && !(flags & MS_RDONLY)) {
+		kprintf("Cannot mount %s: 64-bit File System required", dev);
+		file_put(back);
+		kfree(rsuper);
+		return (void *) -EINVAL;
+	}
+
+	SuperBlock *super = kmalloc(sizeof(SuperBlock));
+	super->type = type;
+	super->ops = &ext2fsSuperOps;
+	init_lock(&super->lock);
+	super->back = back;
+	super->data = rsuper;
+	super->root = kmalloc(sizeof(Inode));
+	ext2_read_vnode(super, 2, super->root);
+
+	return super->root;
+}
+
+/* Allocate an inode */
+Inode *
+ext2fs_alloc_inode(SuperBlock *sb)
+{
+	return NULL;
+}