1 /* The `struct utmp' type, describing entries in the utmp file. GNU version. 2 Copyright (C) 1993, 1996, 1997, 1998, 1999, 2002 3 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, write to the Free 18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 19 02111-1307 USA. */ 20 21 #ifndef _UTMP_H 22 # error "Never include <bits/utmp.h> directly; use <utmp.h> instead." 23 #endif 24 25 #include <paths.h> 26 #include <sys/time.h> 27 #include <sys/types.h> 28 #include <bits/wordsize.h> 29 30 31 #define UT_LINESIZE 32 32 #define UT_NAMESIZE 32 33 #define UT_HOSTSIZE 256 34 35 36 /* The structure describing an entry in the database of 37 previous logins. */ 38 struct lastlog 39 { 40 #if __WORDSIZE == 64 && defined __WORDSIZE_COMPAT32 41 int32_t ll_time; 42 #else 43 __time_t ll_time; 44 #endif 45 char ll_line[UT_LINESIZE]; 46 char ll_host[UT_HOSTSIZE]; 47 }; 48 49 50 /* The structure describing the status of a terminated process. This 51 type is used in `struct utmp' below. */ 52 struct exit_status 53 { 54 short int e_termination; /* Process termination status. */ 55 short int e_exit; /* Process exit status. */ 56 }; 57 58 59 /* The structure describing an entry in the user accounting database. */ 60 struct utmp 61 { 62 short int ut_type; /* Type of login. */ 63 pid_t ut_pid; /* Process ID of login process. */ 64 char ut_line[UT_LINESIZE]; /* Devicename. */ 65 char ut_id[4]; /* Inittab ID. */ 66 char ut_user[UT_NAMESIZE]; /* Username. */ 67 char ut_host[UT_HOSTSIZE]; /* Hostname for remote login. */ 68 struct exit_status ut_exit; /* Exit status of a process marked 69 as DEAD_PROCESS. */ 70 /* The ut_session and ut_tv fields must be the same size when compiled 71 32- and 64-bit. This allows data files and shared memory to be 72 shared between 32- and 64-bit applications. */ 73 #if __WORDSIZE == 64 && defined __WORDSIZE_COMPAT32 74 int32_t ut_session; /* Session ID, used for windowing. */ 75 struct 76 { 77 int32_t tv_sec; /* Seconds. */ 78 int32_t tv_usec; /* Microseconds. */ 79 } ut_tv; /* Time entry was made. */ 80 #else 81 long int ut_session; /* Session ID, used for windowing. */ 82 struct timeval ut_tv; /* Time entry was made. */ 83 #endif 84 85 int32_t ut_addr_v6[4]; /* Internet address of remote host. */ 86 char __unused[20]; /* Reserved for future use. */ 87 }; 88 89 /* Backwards compatibility hacks. */ 90 #define ut_name ut_user 91 #ifndef _NO_UT_TIME 92 /* We have a problem here: `ut_time' is also used otherwise. Define 93 _NO_UT_TIME if the compiler complains. */ 94 # define ut_time ut_tv.tv_sec 95 #endif 96 #define ut_xtime ut_tv.tv_sec 97 #define ut_addr ut_addr_v6[0] 98 99 100 /* Values for the `ut_type' field of a `struct utmp'. */ 101 #define EMPTY 0 /* No valid user accounting information. */ 102 103 #define RUN_LVL 1 /* The system's runlevel. */ 104 #define BOOT_TIME 2 /* Time of system boot. */ 105 #define NEW_TIME 3 /* Time after system clock changed. */ 106 #define OLD_TIME 4 /* Time when system clock changed. */ 107 108 #define INIT_PROCESS 5 /* Process spawned by the init process. */ 109 #define LOGIN_PROCESS 6 /* Session leader of a logged in user. */ 110 #define USER_PROCESS 7 /* Normal process. */ 111 #define DEAD_PROCESS 8 /* Terminated process. */ 112 113 #define ACCOUNTING 9 114 115 /* Old Linux name for the EMPTY type. */ 116 #define UT_UNKNOWN EMPTY 117 118 119 /* Tell the user that we have a modern system with UT_HOST, UT_PID, 120 UT_TYPE, UT_ID and UT_TV fields. */ 121 #define _HAVE_UT_TYPE 1 122 #define _HAVE_UT_PID 1 123 #define _HAVE_UT_ID 1 124 #define _HAVE_UT_TV 1 125 #define _HAVE_UT_HOST 1 126