/usr/include/vlc/plugins/vlc_gcrypt.h is in libvlccore-dev 3.0.1-3build1.
This file is owned by root:root, with mode 0o644.
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* vlc_gcrypt.h: VLC thread support for gcrypt
*****************************************************************************
* Copyright (C) 2004-2010 Rémi Denis-Courmont
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/**
* \file
* This file implements gcrypt support functions in vlc
*/
#include <errno.h>
static inline void vlc_gcrypt_init (void)
{
/* This would need a process-wide static mutex with all libraries linking
* to a given instance of libgcrypt. We cannot do this as we have different
* plugins linking with gcrypt, and some underlying libraries may use it
* behind our back. Only way is to always link gcrypt statically (ouch!) or
* have upstream gcrypt provide one shared object per threading system. */
static bool done = false;
vlc_global_lock (VLC_GCRYPT_MUTEX);
if (!done)
{
/* The suggested way for an application to make sure that global_init
* has been called is by using gcry_check_version. (see global_init
* comments in gcrypt sources) */
gcry_check_version(NULL);
done = true;
}
vlc_global_unlock (VLC_GCRYPT_MUTEX);
}
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