Current File : //usr/include/x86_64-linux-gnu/bits/utmpx.h
/* Structures and definitions for the user accounting database. GNU version.
Copyright (C) 1997-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _UTMPX_H
# error "Never include <bits/utmpx.h> directly; use <utmpx.h> instead."
#endif
#include <bits/types.h>
#include <sys/time.h>
#include <bits/wordsize.h>
#ifdef __USE_GNU
# include <paths.h>
# define _PATH_UTMPX _PATH_UTMP
# define _PATH_WTMPX _PATH_WTMP
#endif
#define __UT_LINESIZE 32
#define __UT_NAMESIZE 32
#define __UT_HOSTSIZE 256
/* The structure describing the status of a terminated process. This
type is used in `struct utmpx' below. */
struct __exit_status
{
#ifdef __USE_GNU
short int e_termination; /* Process termination status. */
short int e_exit; /* Process exit status. */
#else
short int __e_termination; /* Process termination status. */
short int __e_exit; /* Process exit status. */
#endif
};
/* The structure describing an entry in the user accounting database. */
struct utmpx
{
short int ut_type; /* Type of login. */
__pid_t ut_pid; /* Process ID of login process. */
char ut_line[__UT_LINESIZE]
__attribute_nonstring__; /* Devicename. */
char ut_id[4]
__attribute_nonstring__; /* Inittab ID. */
char ut_user[__UT_NAMESIZE]
__attribute_nonstring__; /* Username. */
char ut_host[__UT_HOSTSIZE]
__attribute_nonstring__; /* Hostname for remote login. */
struct __exit_status ut_exit; /* Exit status of a process marked
as DEAD_PROCESS. */
/* The fields ut_session and ut_tv must be the same size when compiled
32- and 64-bit. This allows files and shared memory to be shared
between 32- and 64-bit applications. */
#if __WORDSIZE_TIME64_COMPAT32
__int32_t ut_session; /* Session ID, used for windowing. */
struct
{
__int32_t tv_sec; /* Seconds. */
__int32_t tv_usec; /* Microseconds. */
} ut_tv; /* Time entry was made. */
#else
long int ut_session; /* Session ID, used for windowing. */
struct timeval ut_tv; /* Time entry was made. */
#endif
__int32_t ut_addr_v6[4]; /* Internet address of remote host. */
char __glibc_reserved[20]; /* Reserved for future use. */
};
/* Values for the `ut_type' field of a `struct utmpx'. */
#define EMPTY 0 /* No valid user accounting information. */
#ifdef __USE_GNU
# define RUN_LVL 1 /* The system's runlevel. */
#endif
#define BOOT_TIME 2 /* Time of system boot. */
#define NEW_TIME 3 /* Time after system clock changed. */
#define OLD_TIME 4 /* Time when system clock changed. */
#define INIT_PROCESS 5 /* Process spawned by the init process. */
#define LOGIN_PROCESS 6 /* Session leader of a logged in user. */
#define USER_PROCESS 7 /* Normal process. */
#define DEAD_PROCESS 8 /* Terminated process. */
#ifdef __USE_GNU
# define ACCOUNTING 9 /* System accounting. */
#endif
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