4BSD/usr/man/cat5/dir.5

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DIR(5)              UNIX Programmer's Manual               DIR(5)



NAME
     dir - format of directories

SYNOPSIS
     #include <sys/types.h>
     #include <sys/dir.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
     i-node entry; see _f_i_l_s_y_s(5).  The structure of a directory
     entry as given in the include file is:

          #ifndef DIRSIZ
          #define DIRSIZ    14
          #endif
          struct  direct
          {
                  ino_t     d_ino;
                  char      d_name[DIRSIZ];
          };

     By convention, the first two entries in each directory are
     for `.' and `..'.  The first 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 " .}S 3 1 "(" " "/"" "" "),"" "" "" where `..'
     has the same meaning as `.'.

SEE ALSO
     filsys(5)























Printed 11/10/80                                                1