servers/iso9660fs/buf.h

   1 #include <sys/dir.h>                    /* need struct direct */
   2 #include <dirent.h>
   3
   4 PUBLIC struct buf {
   5   union {
   6     char b__data[_MAX_BLOCK_SIZE];                   /* ordinary user data */
   7     struct direct b__dir[NR_DIR_ENTRIES(_MAX_BLOCK_SIZE)];/* directory block */
   8   } b;
   9
  10   block_t b_blocknr;            /* block number of its (minor) device */
  11   char b_count;                 /* number of users of this buffer */
  12 } buf[NR_BUFS];
  13
  14 /* A block is free if b_dev == NO_DEV. */
  15
  16 #define NIL_BUF ((struct buf *) 0)      /* indicates absence of a buffer */
  17
  18 /* These defs make it possible to use to bp->b_data instead of bp->b.b__data */
  19 #define b_data   b.b__data
  20 #define b_dir    b.b__dir
  21
  22 #define INODE_BLOCK        0                             /* inode block */
  23 #define DIRECTORY_BLOCK    1                             /* directory block */