1 files changed, 111 insertions, 0 deletions
diff --git a/libdde_linux26/lib/src/arch/l4/fs.c b/libdde_linux26/lib/src/arch/l4/fs.c
new file mode 100644
index 00000000..db452949
--- /dev/null
+++ b/libdde_linux26/lib/src/arch/l4/fs.c
@@ -0,0 +1,111 @@
+#include "local.h"
+
+#include <linux/fs.h>
+#include <linux/backing-dev.h>
+#include <linux/mount.h>
+
+/*
+ * Some subsystems, such as the blockdev layer, implement their data
+ * hierarchy as a pseudo file system. To not incorporate the complete
+ * Linux VFS implementation, we cut this down to an own one only for
+ * pseudo file systems.
+ */
+static LIST_HEAD(dde_vfs_mounts);
+
+#define MAX_RA_PAGES 1
+
+void default_unplug_io_fn(struct backing_dev_info *bdi, struct page* p)
+{
+}
+
+struct backing_dev_info default_backing_dev_info = {
+	.ra_pages     = MAX_RA_PAGES,
+	.state        = 0,
+	.capabilities = BDI_CAP_MAP_COPY,
+	.unplug_io_fn = default_unplug_io_fn,
+};
+
+int seq_printf(struct seq_file *m, const char *f, ...)
+{
+	WARN_UNIMPL;
+	return 0;
+}
+
+int generic_writepages(struct address_space *mapping,
+                       struct writeback_control *wbc)
+{
+	WARN_UNIMPL;
+	return 0;
+}
+
+
+/**************************************
+ * Filemap stuff                      *
+ **************************************/
+struct page * find_get_page(struct address_space *mapping, unsigned long offset)
+{
+	WARN_UNIMPL;
+	return NULL;
+}
+
+void unlock_page(struct page *page)
+{
+	WARN_UNIMPL;
+}
+
+int test_set_page_writeback(struct page *page)
+{
+	WARN_UNIMPL;
+	return 0;
+}
+
+void end_page_writeback(struct page *page)
+{
+	WARN_UNIMPL;
+}
+
+void do_invalidatepage(struct page *page, unsigned long offset)
+{
+	WARN_UNIMPL;
+}
+
+int redirty_page_for_writepage(struct writeback_control *wbc, struct page *page)
+{
+	WARN_UNIMPL;
+	return 0;
+}
+
+static struct vfsmount *dde_kern_mount(struct file_system_type *type,
+								 	   int flags, const char *name,
+									   void *data)
+{
+	struct list_head *pos, *head;
+	int error;
+
+	head = &dde_vfs_mounts;
+	__list_for_each(pos, head) {
+		struct vfsmount *mnt = list_entry(pos, struct vfsmount, next);
+		if (strcmp(name, mnt->name) == 0) {
+			printk("FS type %s already mounted!?\n", name);
+			BUG();
+			return NULL;
+		}
+	}
+
+	struct vfsmount *m = kzalloc(sizeof(*m), GFP_KERNEL);
+	m->fs_type = type;
+	m->name = kmalloc(strlen(name) + 1, GFP_KERNEL);
+	memcpy(m->name, name, strlen(name) + 1);
+
+	error = type->get_sb(type, flags, name, data, m);
+	BUG_ON(error);
+
+	list_add_tail(&m->next, &dde_vfs_mounts);
+
+	return m;
+}
+
+struct vfsmount *kern_mount_data(struct file_system_type *type, void *data)
+{
+	return dde_kern_mount(type, 0, type->name, NULL);
+}