vfs - start making the VFS

kernel/src/fs/vfs.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+struct vnode;
+
+#define VN_FILE 1
+#define VN_DIR  2
+
+typedef uint32_t vnode_type_t;
+
+typedef struct vnode_ops {
+    int (*read)(struct vnode* vn, void* buf, size_t size);
+} vnode_ops_t;
+
+typedef struct vnode {
+    char name[256];
+    vnode_type_t type;
+    struct vnode* parent;
+    struct vnode* child;
+    struct vnode* next;
+
+    struct vnode_ops* ops;
+    void* internal;
+} vnode_t;
+
+typedef struct fs {
+    char name[32];
+    int (*mount)(struct vnode** root);
+} fs_t;
+
+void vfs_init(void);
+int vfs_mount(char *path, fs_t* fs);
+int vfs_unmount(char *path);
+int vfs_open(const char* path, vnode_t** result);
+int vfs_read(vnode_t* vn, void* buf, size_t size);