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_read_page(struct v_inode* inode, void* buffer, size_t fpos)
  35 {
  36     return ENOTSUP;
  37 }
  38
  39 int
  40 default_file_write_page(struct v_inode* inode, void* buffer, size_t fpos)
  41 {
  42     return ENOTSUP;
  43 }
  44
  45 int
  46 default_file_readdir(struct v_file* file, struct dir_context* dctx)
  47 {
  48     int i = 0;
  49     struct v_dnode *pos, *n;
  50     llist_for_each(pos, n, &file->dnode->children, siblings)
  51     {
  52         if (i < dctx->index) {
  53             i++;
  54             continue;
  55         }
  56         dctx->read_complete_callback(dctx, pos->name.value, pos->name.len, 0);
  57         break;
  58     }
  59
  60     return i;
  61 }
  62
  63 int
  64 default_inode_dirlookup(struct v_inode* this, struct v_dnode* dnode)
  65 {
  66     return ENOENT;
  67 }
  68
  69 int
  70 default_inode_rename(struct v_inode* from_inode,
  71                      struct v_dnode* from_dnode,
  72                      struct v_dnode* to_dnode)
  73 {
  74     return 0;
  75 }
  76
  77 int
  78 default_inode_sync(struct v_inode* this)
  79 {
  80     return 0;
  81 }
  82
  83 int
  84 default_inode_rmdir(struct v_inode* this, struct v_dnode* dir)
  85 {
  86     return ENOTSUP;
  87 }
  88
  89 int
  90 default_inode_mkdir(struct v_inode* this, struct v_dnode* dir)
  91 {
  92     return ENOTSUP;
  93 }
  94
  95 struct v_file_ops default_file_ops = { .close = default_file_close,
  96                                        .read = default_file_read,
  97                                        .seek = default_file_seek,
  98                                        .readdir = default_file_readdir };
  99
 100 struct v_inode_ops default_inode_ops = { .dir_lookup = default_inode_dirlookup,
 101                                          .sync = default_inode_sync,
 102                                          .open = default_inode_open,
 103                                          .rename = default_inode_rename,
 104                                          .rmdir = default_inode_rmdir };