src/ndir.h

   1 /*
   2         <dir.h> -- definitions for 4.2BSD-compatible directory access
   3
   4         last edit:      09-Jul-1983     D A Gwyn
   5
   6  * The code here is forced by the interface, and is not subject to
   7  * copyright, constituting the only possible expression of the
   8  * algorithm in this format.
   9  */
  10 #ifdef VMS
  11 #ifndef FAB$C_BID
  12 #include <fab.h>
  13 #endif
  14 #ifndef NAM$C_BID
  15 #include <nam.h>
  16 #endif
  17 #ifndef RMS$_SUC
  18 #include <rmsdef.h>
  19 #endif
  20 #include "vmsdir.h"
  21 #endif /* VMS */
  22
  23 #define DIRBLKSIZ       512             /* size of directory block */
  24 #ifdef VMS
  25 #define MAXNAMLEN       (DIR$S_NAME + 7) /* 80 plus room for version #.  */
  26 #define MAXFULLSPEC     NAM$C_MAXRSS /* Maximum full spec */
  27 #else
  28 #ifdef WINDOWSNT
  29 #define MAXNAMLEN       255
  30 #else  /* not WINDOWSNT */
  31 #define MAXNAMLEN       15              /* maximum filename length */
  32 #endif /* not WINDOWSNT */
  33 #endif /* VMS */
  34         /* NOTE:  MAXNAMLEN must be one less than a multiple of 4 */
  35
  36 struct direct                           /* data from readdir() */
  37         {
  38         long            d_ino;          /* inode number of entry */
  39         unsigned short  d_reclen;       /* length of this record */
  40         unsigned short  d_namlen;       /* length of string in d_name */
  41         char            d_name[MAXNAMLEN+1];    /* name of file */
  42         };
  43
  44 typedef struct
  45         {
  46         int     dd_fd;                  /* file descriptor */
  47         int     dd_loc;                 /* offset in block */
  48         int     dd_size;                /* amount of valid data */
  49         char    dd_buf[DIRBLKSIZ];      /* directory block */
  50         }       DIR;                    /* stream data from opendir() */
  51
  52 extern DIR              *opendir();
  53 extern struct direct    *readdir();
  54 extern long             telldir();
  55 extern void             seekdir();
  56 extern void             closedir();
  57
  58 #define rewinddir( dirp )       seekdir( dirp, 0L )
  59
  60 /* arch-tag: aea50570-ffb7-43fd-b423-7743b10fbe6e
  61    (do not change this comment) */