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