feat: (twimap) provide an easy way for mapping kernel objects into filesystem

[lunaix-os.git] / lunaix-os / includes / lunaix / fs / twifs.h

diff --git a/lunaix-os/includes/lunaix/fs/twifs.h b/lunaix-os/includes/lunaix/fs/twifs.h
index 8df3ddcf61ef031f09aae295e5aed1b10e68553a..b194066afe07c791902f1e71e8365376737ad761 100644 (file)
--- a/lunaix-os/includes/lunaix/fs/twifs.h
+++ b/lunaix-os/includes/lunaix/fs/twifs.h
@@ -2,27 +2,76 @@
 #define __LUNAIX_TWIFS_H
 
 #include <lunaix/fs.h>
+#include <lunaix/spike.h>
 
 struct twifs_node
 {
-    struct v_inode* inode;
     struct hstr name;
+    inode_t ino_id;
+    void* data;
     uint32_t itype;
+    char name_val[VFS_NAME_MAXLEN];
     struct llist_header children;
     struct llist_header siblings;
-    struct v_file_ops fops;
+    struct
+    {
+        int (*write)(struct v_inode* inode,
+                     void* buffer,
+                     size_t len,
+                     size_t fpos);
+        int (*read)(struct v_inode* inode,
+                    void* buffer,
+                    size_t len,
+                    size_t fpos);
+    } ops;
 };
 
+struct twimap
+{
+    void* index;
+    void* buffer;
+    void* data;
+    size_t size_acc;
+    void (*read)(struct twimap* mapping);
+    int (*go_next)(struct twimap* mapping);
+    void (*reset)(struct twimap* mapping);
+};
+
+#define twinode_getdata(inode, type)                                           \
+    ({                                                                         \
+        struct twifs_node* twinode = (struct twifs_node*)(inode)->data;        \
+        assert(twinode);                                                       \
+        (type) twinode->data;                                                  \
+    })
+
 void
 twifs_init();
 
 struct twifs_node*
-twifs_file_node(struct twifs_node* parent, const char* name, int name_len);
+twifs_file_node_vargs(struct twifs_node* parent, const char* fmt, va_list args);
 
 struct twifs_node*
-twifs_dir_node(struct twifs_node* parent, const char* name, int name_len);
+twifs_file_node(struct twifs_node* parent, const char* fmt, ...);
 
 struct twifs_node*
-twifs_toplevel_node(const char* name, int name_len);
+twifs_dir_node(struct twifs_node* parent, const char* fmt, ...);
+
+int
+twifs_rm_node(struct twifs_node* node);
+
+#define twimap_index(twimap, type) ((type)((twimap)->index))
+#define twimap_data(twimap, type) ((type)((twimap)->data))
+
+struct twimap*
+twifs_mapping(struct twifs_node* parent, void* data, const char* fmt, ...);
+
+void
+twimap_printf(struct twimap* mapping, const char* fmt, ...);
+
+int
+twimap_memcpy(struct twimap* mapping, const void* src, const size_t len);
+
+int
+twimap_memappend(struct twimap* mapping, const void* src, const size_t len);
 
 #endif /* __LUNAIX_TWIFS_H */