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- /* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <errno.h>
- #include <limits.h>
- #include <stddef.h>
- #include <string.h>
- #include <dirent.h>
- #include <unistd.h>
- #include <sys/types.h>
- #include "direct.h"
-
-
- /* Read a directory entry from DIRP. */
- struct dirent *
- DEFUN(readdir, (dirp), DIR *dirp)
- {
- struct dirent *dp;
-
- if (dirp == NULL || dirp->__data == NULL)
- {
- errno = EINVAL;
- return NULL;
- }
-
- do
- {
- if (dirp->__offset >= dirp->__size)
- {
- /* We've emptied out our buffer. Refill it. */
-
- ssize_t bytes = __getdirentries (dirp->__fd, dirp->__data,
- dirp->__allocation, &dirp->__pos);
- if (bytes <= 0)
- return NULL;
- dirp->__size = (size_t) bytes;
-
- /* Reset the offset into the buffer. */
- dirp->__offset = 0;
- }
-
- dp = (struct dirent *) &dirp->__data[dirp->__offset];
- dirp->__offset += dp->d_reclen;
-
- #ifndef HAVE_D_TYPE
- dp->d_namlen = ((struct direct *) dp)->d_namlen;
- dp->d_type = DT_UNKNOWN;
- #endif
-
- /* Loop to ignore deleted files. */
- } while (dp->d_fileno == 0);
-
- return dp;
- }
-