DIR(4)                     FILE FORMATS                    DIR(4)


NAME
     dir -- format of directories


SYNOPSIS
     #include <sys/dir.h>


DESCRIPTION
     A  directory  behaves  exactly  like an ordinary file, exept
     that only superuser can 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     DIRSIZ
          #define     DIRSIZ    60
          #endif

          struct  direct {
                  ulong     d_ino;
                  char      d_name[DIRSIZ];
          };

     By  convention,  the first two entries in each directory are
     (.) and (..).  The first entry is an entry for the directory
     itself.   The second is for the parent directory.  The mean-
     ing of (..) is modified for the root directory of the master
     file  system;  because there is no parent, (..) has the same
     meaning as (.).


SEE ALSO
     fs(4)























SUPER-UX            Last change: Nov 12, 1996                   1