arch/all-unix/filesys/emul_handler/emul_dir.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include "unix_hints.h"
   7
   8 #include <sys/time.h>
   9 #include <sys/types.h>
  10
  11 /* This prevents redefinition of struct timeval */
  12 #define _AROS_TYPES_TIMEVAL_S_H_
  13
  14 #include <aros/debug.h>
  15
  16 #include "emul_intern.h"
  17 #include "emul_unix.h"
  18
  19 #define is_special_dir(x) (x[0] == '.' && (!x[1] || (x[1] == '.' && !x[2])))
  20
  21 /*
  22  * Retrieves next item in the directory and updates dirpos.
  23  * Also skips unwanted special entries (like . and ..).
  24  * Host call lock is already acquired so we don't need to do it.
  25  */
  26 struct dirent *ReadDir(struct emulbase *emulbase, struct filehandle *fh, IPTR *dirpos)
  27 {
  28     struct dirent *dir;
  29
  30     do
  31     {
  32         dir = emulbase->pdata.SysIFace->readdir(fh->fd);
  33         AROS_HOST_BARRIER
  34
  35         if (NULL == dir)
  36             break;
  37
  38     } while (is_special_dir(dir->d_name));
  39
  40 #if DEBUG
  41     bug("[ReadDir] Filehandle %s, ", fh->hostname);
  42     if (dir)
  43         bug("returning entry: %s\n", dir->d_name);
  44     else
  45         bug("end of search\n");
  46 #endif
  47
  48     *dirpos = emulbase->pdata.SysIFace->telldir(fh->fd);
  49     AROS_HOST_BARRIER
  50
  51     return dir;
  52 }