sysdeps/unix/sysv/linux/s390/s390-32/utmp-convert.h

   1 /* Copyright (C) 2008-2023 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 _UTMP_CONVERT_H
  23 #define _UTMP_CONVERT_H 1
  24
  25 #include <string.h>
  26
  27 #include "utmp32.h"
  28
  29 /* Convert the 64 bit struct utmp value in FROM to the 32 bit version
  30    returned in TO.  */
  31 static inline void
  32 utmp_convert64to32 (const struct utmp *from, struct utmp32 *to)
  33 {
  34 #if _HAVE_UT_TYPE - 0
  35   to->ut_type = from->ut_type;
  36 #endif
  37 #if _HAVE_UT_PID - 0
  38   to->ut_pid = from->ut_pid;
  39 #endif
  40   memcpy (to->ut_line, from->ut_line, UT_LINESIZE);
  41   memcpy (to->ut_user, from->ut_user, UT_NAMESIZE);
  42 #if _HAVE_UT_ID - 0
  43   memcpy (to->ut_id, from->ut_id, 4);
  44 #endif
  45 #if _HAVE_UT_HOST - 0
  46   memcpy (to->ut_host, from->ut_host, UT_HOSTSIZE);
  47 #endif
  48   to->ut_exit = from->ut_exit;
  49   to->ut_session = (int32_t) from->ut_session;
  50 #if _HAVE_UT_TV - 0
  51   to->ut_tv.tv_sec = (int32_t) from->ut_tv.tv_sec;
  52   to->ut_tv.tv_usec = (int32_t) from->ut_tv.tv_usec;
  53 #endif
  54   memcpy (to->ut_addr_v6, from->ut_addr_v6, 4 * 4);
  55 }
  56
  57 /* Convert the 32 bit struct utmp value in FROM to the 64 bit version
  58    returned in TO.  */
  59 static inline void
  60 utmp_convert32to64 (const struct utmp32 *from, struct utmp *to)
  61 {
  62 #if _HAVE_UT_TYPE - 0
  63   to->ut_type = from->ut_type;
  64 #endif
  65 #if _HAVE_UT_PID - 0
  66   to->ut_pid = from->ut_pid;
  67 #endif
  68   memcpy (to->ut_line, from->ut_line, UT_LINESIZE);
  69   memcpy (to->ut_user, from->ut_user, UT_NAMESIZE);
  70 #if _HAVE_UT_ID - 0
  71   memcpy (to->ut_id, from->ut_id, 4);
  72 #endif
  73 #if _HAVE_UT_HOST - 0
  74   memcpy (to->ut_host, from->ut_host, UT_HOSTSIZE);
  75 #endif
  76   to->ut_exit = from->ut_exit;
  77   to->ut_session = (int64_t) from->ut_session;
  78 #if _HAVE_UT_TV - 0
  79   to->ut_tv.tv_sec = (int64_t) from->ut_tv.tv_sec;
  80   to->ut_tv.tv_usec = (int64_t) from->ut_tv.tv_usec;
  81 #endif
  82   memcpy (to->ut_addr_v6, from->ut_addr_v6, 4 * 4);
  83 }
  84
  85 #endif /* utmp-convert.h */