lunaix-os/includes/lunaix/fs/twifs.h

   1 #ifndef __LUNAIX_TWIFS_H
   2 #define __LUNAIX_TWIFS_H
   3
   4 #include <lunaix/ds/ldga.h>
   5 #include <lunaix/fs.h>
   6 #include <lunaix/fs/twimap.h>
   7 #include <lunaix/spike.h>
   8
   9 struct twifs_node
  10 {
  11     struct hstr name;
  12     inode_t ino_id;
  13     void* data;
  14     u32_t itype;
  15     char name_val[VFS_NAME_MAXLEN];
  16     struct llist_header children;
  17     struct llist_header siblings;
  18     struct
  19     {
  20         int (*write)(struct v_inode* inode,
  21                      void* buffer,
  22                      size_t len,
  23                      size_t fpos);
  24         int (*read)(struct v_inode* inode,
  25                     void* buffer,
  26                     size_t len,
  27                     size_t fpos);
  28     } ops;
  29 };
  30
  31 #define twinode_getdata(inode, type)                                           \
  32     ({                                                                         \
  33         struct twifs_node* twinode = (struct twifs_node*)(inode)->data;        \
  34         assert(twinode);                                                       \
  35         (type) twinode->data;                                                  \
  36     })
  37
  38 #define EXPORT_TWIFS_PLUGIN(label, plg_init)                                   \
  39     export_ldga_el(twiplugin_inits, label, ptr_t, plg_init)
  40
  41 void
  42 twifs_register_plugins();
  43
  44 void
  45 twifs_init();
  46
  47 struct twifs_node*
  48 twifs_file_node_vargs(struct twifs_node* parent, const char* fmt, va_list args);
  49
  50 struct twifs_node*
  51 twifs_file_node(struct twifs_node* parent, const char* fmt, ...);
  52
  53 struct twifs_node*
  54 twifs_dir_node(struct twifs_node* parent, const char* fmt, ...);
  55
  56 int
  57 twifs_rm_node(struct twifs_node* node);
  58
  59 struct twimap*
  60 twifs_mapping(struct twifs_node* parent, void* data, const char* fmt, ...);
  61
  62 #define twimap_entry_simple(parent, name, data, read_cb)                       \
  63     ({                                                                         \
  64         struct twimap* map = twifs_mapping((parent), (data), (name));          \
  65         map->read = (read_cb);                                                 \
  66         map;                                                                   \
  67     })
  68
  69 #endif /* __LUNAIX_TWIFS_H */