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