1 /* Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
25 #include <sys/types.h>
28 #include "dirstream.h"
31 /* Read a directory entry from DIRP. */
33 __readdir_r (DIR *dirp, struct dirent *entry, struct dirent **result)
43 __libc_lock_lock (dirp->__lock);
47 if (dirp->__ptr - dirp->__data >= dirp->__size)
49 /* We've emptied out our buffer. Refill it. */
51 char *data = dirp->__data;
55 if (err = HURD_FD_PORT_USE (dirp->__fd,
66 /* DATA now corresponds to entry index DIRP->__entry_ptr. */
67 dirp->__entry_data = dirp->__entry_ptr;
69 if (data != dirp->__data)
71 /* The data was passed out of line, so our old buffer is no
72 longer useful. Deallocate the old buffer and reset our
73 information for the new buffer. */
74 __vm_deallocate (__mach_task_self (),
75 (vm_address_t) dirp->__data,
78 dirp->__allocation = round_page (dirp->__size);
81 /* Reset the pointer into the buffer. */
82 dirp->__ptr = dirp->__data;
91 /* We trust the filesystem to return correct data and so we
95 dp = (struct dirent *) dirp->__ptr;
96 dirp->__ptr += dp->d_reclen;
99 /* Loop to ignore deleted files. */
100 } while (dp->d_fileno == 0);
108 __libc_lock_unlock (dirp->__lock);
112 weak_alias (__readdir_r, readdir_r)