1 /* Copyright (C) 2008-2022 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
19 /* This file provides functions converting between the 32 and 64 bit
20 struct utmp variants. */
21
22 #ifndef _UTMPX_CONVERT_H
23 #define _UTMPX_CONVERT_H 1
24
25 #include <string.h>
26 #include "utmpx32.h"
27
28 /* Convert the 64 bit struct utmpx value in FROM to the 32 bit version
29 returned in TO. */
30 static inline void
utmpx_convert64to32(const struct utmpx * from,struct utmpx32 * to)31 utmpx_convert64to32 (const struct utmpx *from, struct utmpx32 *to)
32 {
33 #if _HAVE_UT_TYPE - 0
34 to->ut_type = from->ut_type;
35 #endif
36 #if _HAVE_UT_PID - 0
37 to->ut_pid = from->ut_pid;
38 #endif
39 memcpy (to->ut_line, from->ut_line, __UT_LINESIZE);
40 memcpy (to->ut_user, from->ut_user, __UT_NAMESIZE);
41 #if _HAVE_UT_ID - 0
42 memcpy (to->ut_id, from->ut_id, 4);
43 #endif
44 #if _HAVE_UT_HOST - 0
45 memcpy (to->ut_host, from->ut_host, __UT_HOSTSIZE);
46 #endif
47 to->ut_exit = from->ut_exit;
48 to->ut_session = (int32_t) from->ut_session;
49 #if _HAVE_UT_TV - 0
50 to->ut_tv.tv_sec = (int32_t) from->ut_tv.tv_sec;
51 to->ut_tv.tv_usec = (int32_t) from->ut_tv.tv_usec;
52 #endif
53 memcpy (to->ut_addr_v6, from->ut_addr_v6, 4 * 4);
54 }
55
56 /* Convert the 32 bit struct utmpx value in FROM to the 64 bit version
57 returned in TO. */
58 static inline void
utmpx_convert32to64(const struct utmpx32 * from,struct utmpx * to)59 utmpx_convert32to64 (const struct utmpx32 *from, struct utmpx *to)
60 {
61 #if _HAVE_UT_TYPE - 0
62 to->ut_type = from->ut_type;
63 #endif
64 #if _HAVE_UT_PID - 0
65 to->ut_pid = from->ut_pid;
66 #endif
67 memcpy (to->ut_line, from->ut_line, __UT_LINESIZE);
68 memcpy (to->ut_user, from->ut_user, __UT_NAMESIZE);
69 #if _HAVE_UT_ID - 0
70 memcpy (to->ut_id, from->ut_id, 4);
71 #endif
72 #if _HAVE_UT_HOST - 0
73 memcpy (to->ut_host, from->ut_host, __UT_HOSTSIZE);
74 #endif
75 to->ut_exit = from->ut_exit;
76 to->ut_session = (int64_t) from->ut_session;
77 #if _HAVE_UT_TV - 0
78 to->ut_tv.tv_sec = (int64_t) from->ut_tv.tv_sec;
79 to->ut_tv.tv_usec = (int64_t) from->ut_tv.tv_usec;
80 #endif
81 memcpy (to->ut_addr_v6, from->ut_addr_v6, 4 * 4);
82 }
83
84 #endif /* utmpx-convert.h */
85