1/* Copyright (C) 1998-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <string.h>
19#include <unistd.h>
20
21#define TRANSFORM_UTMP_FILE_NAME(file_name) \
22 ((strcmp (file_name, _PATH_UTMP) == 0 \
23 && __access (_PATH_UTMP "x", F_OK) == 0) \
24 ? (_PATH_UTMP "x") \
25 : ((strcmp (file_name, _PATH_WTMP) == 0 \
26 && __access ( _PATH_WTMP "x", F_OK) == 0) \
27 ? (_PATH_WTMP "x") \
28 : ((strcmp (file_name, _PATH_UTMP "x") == 0 \
29 && __access (_PATH_UTMP "x", F_OK) != 0) \
30 ? _PATH_UTMP \
31 : ((strcmp (file_name, _PATH_WTMP "x") == 0 \
32 && __access (_PATH_WTMP "x", F_OK) != 0) \
33 ? _PATH_WTMP \
34 : file_name))))
35
36#include <login/updwtmp.c>
37

source code of glibc/sysdeps/unix/sysv/linux/updwtmp.c