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/* Copyright (C) 1991-2023 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <assert.h>
#include <dirent.h>
#include <dirstream.h>
#include <telldir.h>
/* Return the current position of DIRP. */
long int
telldir (DIR *dirp)
{
long int ret;
__libc_lock_lock (dirp->lock);
#if _DIRENT_OFFSET_TRANSLATION
/* If the directory position fits in the packet structure, returns it.
Otherwise, check if the position is already been recorded in the
dynamic array. If not, add the new record. */
union dirstream_packed dsp;
if (!telldir_need_dirstream (dirp->filepos))
{
dsp.p.is_packed = 1;
dsp.p.info = dirp->filepos;
}
else
{
dsp.l = -1;
size_t i;
for (i = 0; ;i++)
{
/* It should be pre-allocated on readdir. */
assert (i < dirstream_loc_size (&dirp->locs));
if (*dirstream_loc_at (&dirp->locs, i) == dirp->filepos)
break;
}
dsp.p.is_packed = 0;
dsp.p.info = i;
}
ret = dsp.l;
#else
ret = dirp->filepos;
#endif
__libc_lock_unlock (dirp->lock);
return ret;
}
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