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/* Declarations for GNU's read utmp module.
Copyright (C) 1992-2007, 2009-2022 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by jla; revised by djm */
#ifndef __READUTMP_H__
# define __READUTMP_H__
# include <stdlib.h>
# include <sys/types.h>
/* AIX 4.3.3 has both utmp.h and utmpx.h, but only struct utmp
has the ut_exit member. */
# if (HAVE_UTMPX_H && HAVE_UTMP_H && HAVE_STRUCT_UTMP_UT_EXIT \
&& ! HAVE_STRUCT_UTMPX_UT_EXIT)
# undef HAVE_UTMPX_H
# endif
# if HAVE_UTMPX_H
# if HAVE_UTMP_H
/* HPUX 10.20 needs utmp.h, for the definition of e.g., UTMP_FILE. */
# include <utmp.h>
# endif
# if defined _THREAD_SAFE && defined UTMP_DATA_INIT
/* When including both utmp.h and utmpx.h on AIX 4.3, with _THREAD_SAFE
defined, work around the duplicate struct utmp_data declaration. */
# define utmp_data gl_aix_4_3_workaround_utmp_data
# endif
# include <utmpx.h>
# define UTMP_STRUCT_NAME utmpx
# define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_tv.tv_sec)
# define SET_UTMP_ENT setutxent
# define GET_UTMP_ENT getutxent
# define END_UTMP_ENT endutxent
# ifdef HAVE_UTMPXNAME
# define UTMP_NAME_FUNCTION utmpxname
# elif defined UTXDB_ACTIVE
# define UTMP_NAME_FUNCTION(x) setutxdb (UTXDB_ACTIVE, x)
# endif
# if HAVE_STRUCT_UTMPX_UT_EXIT_E_TERMINATION
# define UT_EXIT_E_TERMINATION(U) ((U)->ut_exit.e_termination)
# else
# if HAVE_STRUCT_UTMPX_UT_EXIT_UT_TERMINATION
# define UT_EXIT_E_TERMINATION(U) ((U)->ut_exit.ut_termination)
# else
# define UT_EXIT_E_TERMINATION(U) 0
# endif
# endif
# if HAVE_STRUCT_UTMPX_UT_EXIT_E_EXIT
# define UT_EXIT_E_EXIT(U) ((U)->ut_exit.e_exit)
# else
# if HAVE_STRUCT_UTMPX_UT_EXIT_UT_EXIT
# define UT_EXIT_E_EXIT(U) ((U)->ut_exit.ut_exit)
# else
# define UT_EXIT_E_EXIT(U) 0
# endif
# endif
# elif HAVE_UTMP_H
# include <utmp.h>
# if !HAVE_DECL_GETUTENT
struct utmp *getutent (void);
# endif
# define UTMP_STRUCT_NAME utmp
# define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_time)
# define SET_UTMP_ENT setutent
# define GET_UTMP_ENT getutent
# define END_UTMP_ENT endutent
# ifdef HAVE_UTMPNAME
# define UTMP_NAME_FUNCTION utmpname
# endif
# if HAVE_STRUCT_UTMP_UT_EXIT_E_TERMINATION
# define UT_EXIT_E_TERMINATION(U) ((U)->ut_exit.e_termination)
# else
# if HAVE_STRUCT_UTMP_UT_EXIT_UT_TERMINATION
# define UT_EXIT_E_TERMINATION(U) ((U)->ut_exit.ut_termination)
# else
# define UT_EXIT_E_TERMINATION(U) 0
# endif
# endif
# if HAVE_STRUCT_UTMP_UT_EXIT_E_EXIT
# define UT_EXIT_E_EXIT(U) ((U)->ut_exit.e_exit)
# else
# if HAVE_STRUCT_UTMP_UT_EXIT_UT_EXIT
# define UT_EXIT_E_EXIT(U) ((U)->ut_exit.ut_exit)
# else
# define UT_EXIT_E_EXIT(U) 0
# endif
# endif
# endif
/* Accessor macro for the member named ut_user or ut_name. */
# if HAVE_UTMPX_H
# if HAVE_STRUCT_UTMPX_UT_USER
# define UT_USER(Utmp) ((Utmp)->ut_user)
# endif
# if HAVE_STRUCT_UTMPX_UT_NAME
# undef UT_USER
# define UT_USER(Utmp) ((Utmp)->ut_name)
# endif
# elif HAVE_UTMP_H
# if HAVE_STRUCT_UTMP_UT_USER
# define UT_USER(Utmp) ((Utmp)->ut_user)
# endif
# if HAVE_STRUCT_UTMP_UT_NAME
# undef UT_USER
# define UT_USER(Utmp) ((Utmp)->ut_name)
# endif
# endif
# define HAVE_STRUCT_XTMP_UT_EXIT \
(HAVE_STRUCT_UTMP_UT_EXIT \
|| HAVE_STRUCT_UTMPX_UT_EXIT)
# define HAVE_STRUCT_XTMP_UT_ID \
(HAVE_STRUCT_UTMP_UT_ID \
|| HAVE_STRUCT_UTMPX_UT_ID)
# define HAVE_STRUCT_XTMP_UT_PID \
(HAVE_STRUCT_UTMP_UT_PID \
|| HAVE_STRUCT_UTMPX_UT_PID)
typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
enum { UT_USER_SIZE = sizeof UT_USER ((STRUCT_UTMP *) 0) };
# if !defined UTMP_FILE && defined _PATH_UTMP
# define UTMP_FILE _PATH_UTMP
# endif
# if !defined WTMP_FILE && defined _PATH_WTMP
# define WTMP_FILE _PATH_WTMP
# endif
# ifdef UTMPX_FILE /* Solaris, SysVr4 */
# undef UTMP_FILE
# define UTMP_FILE UTMPX_FILE
# endif
# ifdef WTMPX_FILE /* Solaris, SysVr4 */
# undef WTMP_FILE
# define WTMP_FILE WTMPX_FILE
# endif
# ifndef UTMP_FILE
# define UTMP_FILE "/etc/utmp"
# endif
# ifndef WTMP_FILE
# define WTMP_FILE "/etc/wtmp"
# endif
# if HAVE_STRUCT_XTMP_UT_PID
# define UT_PID(U) ((U)->ut_pid)
# else
# define UT_PID(U) 0
# endif
# if HAVE_STRUCT_UTMP_UT_TYPE || HAVE_STRUCT_UTMPX_UT_TYPE
# define UT_TYPE_EQ(U, V) ((U)->ut_type == (V))
# define UT_TYPE_NOT_DEFINED 0
# else
# define UT_TYPE_EQ(U, V) 0
# define UT_TYPE_NOT_DEFINED 1
# endif
# ifdef BOOT_TIME
# define UT_TYPE_BOOT_TIME(U) UT_TYPE_EQ (U, BOOT_TIME)
# else
# define UT_TYPE_BOOT_TIME(U) 0
# endif
# ifdef USER_PROCESS
# define UT_TYPE_USER_PROCESS(U) UT_TYPE_EQ (U, USER_PROCESS)
# else
# define UT_TYPE_USER_PROCESS(U) 0
# endif
# define IS_USER_PROCESS(U) \
(UT_USER (U)[0] \
&& (UT_TYPE_USER_PROCESS (U) \
|| (UT_TYPE_NOT_DEFINED && UT_TIME_MEMBER (U) != 0)))
/* Options for read_utmp. */
enum
{
READ_UTMP_CHECK_PIDS = 1,
READ_UTMP_USER_PROCESS = 2
};
char *extract_trimmed_name (const STRUCT_UTMP *ut)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
/* FIXME: This header should use idx_t, not size_t. */
int read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,
int options);
#endif /* __READUTMP_H__ */
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