servers/vfs/vnode.h

   1 #ifndef __VFS_VNODE_H__
   2 #define __VFS_VNODE_H__
   3
   4 EXTERN struct vnode {
   5   endpoint_t v_fs_e;            /* FS process' endpoint number */
   6   endpoint_t v_mapfs_e;         /* mapped FS process' endpoint number */
   7   ino_t v_inode_nr;             /* inode number on its (minor) device */
   8   ino_t v_mapinode_nr;          /* mapped inode number of mapped FS. */
   9   mode_t v_mode;                /* file type, protection, etc. */
  10   uid_t v_uid;                  /* uid of inode. */
  11   gid_t v_gid;                  /* gid of inode. */
  12   off_t v_size;                 /* current file size in bytes */
  13   int v_ref_count;              /* # times vnode used; 0 means slot is free */
  14   int v_fs_count;               /* # reference at the underlying FS */
  15   int v_mapfs_count;            /* # reference at the underlying mapped FS */
  16 #if 0
  17   int v_ref_check;              /* for consistency checks */
  18 #endif
  19   off_t v_pipe_rd_pos;
  20   off_t v_pipe_wr_pos;
  21   endpoint_t v_bfs_e;           /* endpoint number for the FS proces in case
  22                                    of a block special file */
  23   dev_t v_dev;                  /* device number on which the corresponding
  24                                    inode resides */
  25   dev_t v_sdev;                 /* device number for special files */
  26   struct vmnt *v_vmnt;          /* vmnt object of the partition */
  27   tll_t v_lock;                 /* three-level-lock */
  28 } vnode[NR_VNODES];
  29
  30 /* vnode lock types mapping */
  31 #define VNODE_READ TLL_READ
  32 #define VNODE_OPCL TLL_READSER
  33 #define VNODE_WRITE TLL_WRITE
  34 #endif