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/* Copyright (C) 1993-2019 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 <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/id.h>
/* Get the real user ID of the calling process. */
uid_t
__getuid (void)
{
error_t err;
uid_t uid;
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_id.lock);
if (err = _hurd_check_ids ())
{
errno = err;
uid = -1;
}
else if (_hurd_id.aux.nuids >= 1)
uid = _hurd_id.aux.uids[0];
else
{
/* We do not even have a real uid. */
errno = EGRATUITOUS;
uid = -1;
}
__mutex_unlock (&_hurd_id.lock);
HURD_CRITICAL_END;
return uid;
}
weak_alias (__getuid, getuid)
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