lunaix-os/kernel/fs/defaults.c

   1 #include <lunaix/fs.h>
   2
   3 int
   4 default_file_close(struct v_file* file)
   5 {
   6     return 0;
   7 }
   8
   9 int
  10 default_file_seek(struct v_inode* inode, size_t offset)
  11 {
  12     return 0;
  13 }
  14
  15 int
  16 default_inode_open(struct v_inode* this, struct v_file* file)
  17 {
  18     return 0;
  19 }
  20
  21 int
  22 default_file_read(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
  23 {
  24     return ENOTSUP;
  25 }
  26
  27 int
  28 default_file_write(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
  29 {
  30     return ENOTSUP;
  31 }
  32
  33 int
  34 default_file_readdir(struct v_file* file, struct dir_context* dctx)
  35 {
  36     int i = 0;
  37     struct v_dnode *pos, *n;
  38     llist_for_each(pos, n, &file->dnode->children, siblings)
  39     {
  40         if (i < dctx->index) {
  41             i++;
  42             continue;
  43         }
  44         dctx->read_complete_callback(dctx, pos->name.value, pos->name.len, 0);
  45         break;
  46     }
  47
  48     return i;
  49 }
  50
  51 int
  52 default_inode_dirlookup(struct v_inode* this, struct v_dnode* dnode)
  53 {
  54     return ENOENT;
  55 }
  56
  57 int
  58 default_inode_rename(struct v_inode* from_inode,
  59                      struct v_dnode* from_dnode,
  60                      struct v_dnode* to_dnode)
  61 {
  62     return 0;
  63 }
  64
  65 int
  66 default_inode_sync(struct v_inode* this)
  67 {
  68     return 0;
  69 }
  70
  71 int
  72 default_inode_rmdir(struct v_inode* this, struct v_dnode* dir)
  73 {
  74     return ENOTSUP;
  75 }
  76
  77 int
  78 default_inode_mkdir(struct v_inode* this, struct v_dnode* dir)
  79 {
  80     return ENOTSUP;
  81 }
  82
  83 struct v_file_ops default_file_ops = { .close = default_file_close,
  84                                        .read = default_file_read,
  85                                        .seek = default_file_seek,
  86                                        .readdir = default_file_readdir };
  87
  88 struct v_inode_ops default_inode_ops = { .dir_lookup = default_inode_dirlookup,
  89                                          .sync = default_inode_sync,
  90                                          .open = default_inode_open,
  91                                          .rename = default_inode_rename,
  92                                          .rmdir = default_inode_rmdir };