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

   1 #ifndef __LUNAIX_TWIFS_H
   2 #define __LUNAIX_TWIFS_H
   3
   4 #include <lunaix/fs.h>
   5 #include <lunaix/spike.h>
   6
   7 struct twifs_node
   8 {
   9     struct hstr name;
  10     inode_t ino_id;
  11     void* data;
  12     uint32_t itype;
  13     char name_val[VFS_NAME_MAXLEN];
  14     struct llist_header children;
  15     struct llist_header siblings;
  16     struct
  17     {
  18         int (*write)(struct v_inode* inode,
  19                      void* buffer,
  20                      size_t len,
  21                      size_t fpos);
  22         int (*read)(struct v_inode* inode,
  23                     void* buffer,
  24                     size_t len,
  25                     size_t fpos);
  26     } ops;
  27 };
  28
  29 struct twimap
  30 {
  31     void* index;
  32     void* buffer;
  33     void* data;
  34     size_t size_acc;
  35     void (*read)(struct twimap* mapping);
  36     int (*go_next)(struct twimap* mapping);
  37     void (*reset)(struct twimap* mapping);
  38 };
  39
  40 #define twinode_getdata(inode, type)                                           \
  41     ({                                                                         \
  42         struct twifs_node* twinode = (struct twifs_node*)(inode)->data;        \
  43         assert(twinode);                                                       \
  44         (type) twinode->data;                                                  \
  45     })
  46
  47 void
  48 twifs_init();
  49
  50 struct twifs_node*
  51 twifs_file_node_vargs(struct twifs_node* parent, const char* fmt, va_list args);
  52
  53 struct twifs_node*
  54 twifs_file_node(struct twifs_node* parent, const char* fmt, ...);
  55
  56 struct twifs_node*
  57 twifs_dir_node(struct twifs_node* parent, const char* fmt, ...);
  58
  59 int
  60 twifs_rm_node(struct twifs_node* node);
  61
  62 #define twimap_index(twimap, type) ((type)((twimap)->index))
  63 #define twimap_data(twimap, type) ((type)((twimap)->data))
  64
  65 struct twimap*
  66 twifs_mapping(struct twifs_node* parent, void* data, const char* fmt, ...);
  67
  68 void
  69 twimap_printf(struct twimap* mapping, const char* fmt, ...);
  70
  71 int
  72 twimap_memcpy(struct twimap* mapping, const void* src, const size_t len);
  73
  74 int
  75 twimap_memappend(struct twimap* mapping, const void* src, const size_t len);
  76
  77 #endif /* __LUNAIX_TWIFS_H */