dir(4)                                                     dir(4)



     NAME
          dir - format of System V directories

     SYNOPSIS
          #include <sys/types.h>
          #include <svfs/fsdir.h>

     DESCRIPTION
          A directory behaves exactly like an ordinary file, save that
          no user may write into a directory.  The fact that a file is
          a directory is indicated by a bit in the flag word of its
          inode entry (see fs(4)).  The structure of a directory entry
          as given in the include file is:

             #ifndef       SVFSDIRSIZ
             #define       SVFSDIRSIZ    14
             #endif

             struct        svfsdirect {
                  ino_t    d_ino;
                  char     d_name[SVFSDIRSIZ];
             };

          By convention, the first two entries in each directory are
          for ``.'' and ``..''.  The first is an entry for the direc-
          tory itself.  The second is for the parent directory.  The
          meaning of ``..'' is modified for the root directory of the
          master file system; there is no parent, so ``..'' has the
          same meaning as ``.''.

     SEE ALSO
          fs(4).























     April, 1990                                                     1