/* Declarations for GNU's read utmp module.
- Copyright (C) 1992-1999 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1992-2007, 2009-2014 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 2, or (at your option)
- any later version.
+ 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
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, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by jla; revised by djm */
#ifndef __READUTMP_H__
# define __READUTMP_H__
-# ifndef PARAMS
-# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
-# define PARAMS(Args) Args
-# else
-# define PARAMS(Args) ()
-# endif
-# endif
-
# include <sys/types.h>
-# ifdef HAVE_UTMPX_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)
-# else
+# define SET_UTMP_ENT setutxent
+# define GET_UTMP_ENT getutxent
+# define END_UTMP_ENT endutxent
+# ifdef HAVE_UTMPXNAME
+# define UTMP_NAME_FUNCTION utmpxname
+# 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)
-# endif
+# define SET_UTMP_ENT setutent
+# define GET_UTMP_ENT getutent
+# define END_UTMP_ENT endutent
+# ifdef HAVE_UTMPNAME
+# define UTMP_NAME_FUNCTION utmpname
+# endif
-typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
+# 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
-# include <time.h>
-# ifdef HAVE_SYS_PARAM_H
-# include <sys/param.h>
# endif
-# include <errno.h>
-# ifndef errno
-extern int errno;
+/* 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
-# if !defined (UTMP_FILE) && defined (_PATH_UTMP)
+# 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)
+# if !defined WTMP_FILE && defined _PATH_WTMP
# define WTMP_FILE _PATH_WTMP
# endif
# define WTMP_FILE "/etc/wtmp"
# endif
-# undef PARAMS
-# if defined (__STDC__) && __STDC__
-# define PARAMS(Args) Args
+# 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 PARAMS(Args) ()
+# define UT_TYPE_USER_PROCESS(U) 0
# endif
-extern char *extract_trimmed_name PARAMS ((const STRUCT_UTMP *ut));
-extern int read_utmp PARAMS ((const char *filename,
- int *n_entries, STRUCT_UTMP **utmp_buf));
+# 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);
+int read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,
+ int options);
#endif /* __READUTMP_H__ */
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