1/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>
4 and Paul Janzen <pcj@primenet.com>, 1996.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <libc-lock.h>
21#include <errno.h>
22#include <stdlib.h>
23#include <utmp.h>
24
25#include "utmp-private.h"
26
27
28/* We have to use the lock in getutent_r.c. */
29__libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
30
31
32int
33__getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
34{
35 int retval;
36
37 /* Test whether ID has any of the legal types. */
38 if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
39 && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
40 && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
41 && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
42 /* No, using '<' and '>' for the test is not possible. */
43 {
44 __set_errno (EINVAL);
45 *result = NULL;
46 return -1;
47 }
48
49 __libc_lock_lock (__libc_utmp_lock);
50
51 retval = __libc_getutid_r (id, buffer, result);
52
53 __libc_lock_unlock (__libc_utmp_lock);
54
55 return retval;
56}
57libc_hidden_def (__getutid_r)
58weak_alias (__getutid_r, getutid_r)
59