/* The `struct utmp' type, describing entries in the utmp file.

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Copyright (C) 1993-2019 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _UTMP_H

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# error "Never include <bits/utmp.h> directly; use <utmp.h> instead."

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#endif

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#include <paths.h>

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#include <sys/time.h>

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#include <sys/types.h>

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#include <bits/wordsize.h>

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#define UT_LINESIZE 32

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#define UT_NAMESIZE 32

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#define UT_HOSTSIZE 256

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/* The structure describing an entry in the database of

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previous logins. */

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struct lastlog

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{

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#if __WORDSIZE_TIME64_COMPAT32

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int32_t ll_time;

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#else

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__time_t ll_time;

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#endif

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char ll_line[UT_LINESIZE];

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char ll_host[UT_HOSTSIZE];

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};

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/* The structure describing the status of a terminated process. This

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type is used in `struct utmp' below. */

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struct exit_status

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{

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short int e_termination; /* Process termination status. */

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short int e_exit; /* Process exit status. */

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};

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/* The structure describing an entry in the user accounting database. */

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struct utmp

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{

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short int ut_type; /* Type of login. */

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pid_t ut_pid; /* Process ID of login process. */

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char ut_line[UT_LINESIZE]

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__attribute_nonstring__; /* Devicename. */

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char ut_id[4]

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__attribute_nonstring__; /* Inittab ID. */

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char ut_user[UT_NAMESIZE]

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__attribute_nonstring__; /* Username. */

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char ut_host[UT_HOSTSIZE]

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__attribute_nonstring__; /* Hostname for remote login. */

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struct exit_status ut_exit; /* Exit status of a process marked

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as DEAD_PROCESS. */

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/* The ut_session and ut_tv fields must be the same size when compiled

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32- and 64-bit. This allows data files and shared memory to be

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shared between 32- and 64-bit applications. */

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#if __WORDSIZE_TIME64_COMPAT32

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int32_t ut_session; /* Session ID, used for windowing. */

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struct

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{

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int32_t tv_sec; /* Seconds. */

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int32_t tv_usec; /* Microseconds. */

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} ut_tv; /* Time entry was made. */

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#else

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long int ut_session; /* Session ID, used for windowing. */

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struct timeval ut_tv; /* Time entry was made. */

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#endif

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int32_t ut_addr_v6[4]; /* Internet address of remote host. */

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char __glibc_reserved[20]; /* Reserved for future use. */

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};

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/* Backwards compatibility hacks. */

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#define ut_name ut_user

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#ifndef _NO_UT_TIME

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/* We have a problem here: `ut_time' is also used otherwise. Define

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_NO_UT_TIME if the compiler complains. */

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# define ut_time ut_tv.tv_sec

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#endif

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#define ut_xtime ut_tv.tv_sec

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#define ut_addr ut_addr_v6[0]

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/* Values for the `ut_type' field of a `struct utmp'. */

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#define EMPTY 0 /* No valid user accounting information. */

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#define RUN_LVL 1 /* The system's runlevel. */

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#define BOOT_TIME 2 /* Time of system boot. */

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#define NEW_TIME 3 /* Time after system clock changed. */

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#define OLD_TIME 4 /* Time when system clock changed. */

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#define INIT_PROCESS 5 /* Process spawned by the init process. */

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#define LOGIN_PROCESS 6 /* Session leader of a logged in user. */

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#define USER_PROCESS 7 /* Normal process. */

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#define DEAD_PROCESS 8 /* Terminated process. */

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#define ACCOUNTING 9

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/* Old Linux name for the EMPTY type. */

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#define UT_UNKNOWN EMPTY

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/* Tell the user that we have a modern system with UT_HOST, UT_PID,

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UT_TYPE, UT_ID and UT_TV fields. */

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#define _HAVE_UT_TYPE 1

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#define _HAVE_UT_PID 1

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#define _HAVE_UT_ID 1

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#define _HAVE_UT_TV 1

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#define _HAVE_UT_HOST 1

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