Manual Pages for UNIX Operating System command usage for man dir_ufs

File Formats                                           dir_ufs(4)



NAME
     dir_ufs, dir - format of ufs directories

SYNOPSIS
     #include 


     #include 


     #include 


DESCRIPTION
     A directory consists of some number of blocks  of  DIRBLKSIZ
     bytes,  where   DIRBLKSIZ  is  chosen  such  that  it can be
     transferred to disk in a single atomic operation, for  exam-
     ple, 512 bytes on most machines.


     Each  DIRBLKSIZ-byte block contains some number of directory
     entry structures, which are of variable length.  Each direc-
     tory entry has a  struct direct at the front of it, contain-
     ing  its  inode  number,  the  length  of the entry, and the
     length of the name contained in the  entry.   These  entries
     are  followed  by  the name padded to a 4 byte boundary with
     null bytes.  All names are guaranteed  null-terminated.  The
     maximum length of a name in a directory is  MAXNAMLEN.

       #define DIRBLKSIZ                       DEV_BSIZE
       #define MAXNAMLEN                       256
       struct direct {
               ulong_t  d_ino;                 /* inode number of entry */
               ushort_t d_reclen;              /* length of this record */
               ushort_t d_namlen;              /* length of string in d_name */
               char     d_name[MAXNAMLEN + 1]; /* maximum name length */
       };


ATTRIBUTES
     See attributes(5) for a description of the following  attri-
     butes:













SunOS 5.11          Last change: 16 Apr 2003                    1






File Formats                                           dir_ufs(4)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Uncommitted                 |
    |_____________________________|_____________________________|


SEE ALSO
     attributes(5), ufs(7FS)














































SunOS 5.11          Last change: 16 Apr 2003                    2