Added very basic vfs

1 files changed, 48 insertions, 0 deletions

diff --git a/src/kernel/fs/vfs.c b/src/kernel/fs/vfs.c
new file mode 100644
index 0000000..075117e
--- /dev/null
+++ b/src/kernel/fs/vfs.c
@@ -0,0 +1,48 @@
+#include <stddef.h>
+#include <kernel/fs/vfs.h>
+
+struct fs_node *fs_root = NULL;
+
+uint32_t read_fs_node(struct fs_node *node, size_t offset, size_t size, char *buf)
+{
+	if (node->read != NULL)
+		return node->read(node, offset, size, buf);
+	else
+		return 0;
+}
+
+uint32_t write_fs_node(struct fs_node *node, size_t offset, size_t size, char *buf)
+{
+	if (node->write != NULL)
+		return node->write(node, offset, size, buf);
+	else
+		return 0;
+}
+
+void open_fs_node(struct fs_node *node, bool read, bool write)
+{
+	if (node->open != NULL)
+		node->open(node);
+}
+
+void close_fs_node(struct fs_node *node)
+{
+	if (node->close != NULL)
+		node->close(node);
+}
+
+struct dir_entry *read_dir_node(struct fs_node *node, size_t index)
+{
+	if ((node->type & DIR_NODE) != 0 && node->read_dir != NULL)
+		return node->read_dir(node, index);
+	else
+		return NULL;
+}
+
+struct fs_node *find_dir_node(struct fs_node *node, char *name)
+{
+	if ((node->type & DIR_NODE) != 0 && node->find_dir != NULL)
+		return node->find_dir(node, name);
+	else
+		return NULL;
+}