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Edit File: utmpx.h
/* Structures and definitions for the user accounting database. GNU version. Copyright (C) 1997-2021 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