Updated

[gnulib.git] / lib / readutmp.h

diff --git a/lib/readutmp.h b/lib/readutmp.h
index 28afb78..491a99b 100644 (file)
--- a/lib/readutmp.h
+++ b/lib/readutmp.h
@@ -1,5 +1,7 @@
 /* Declarations for GNU's read utmp module.
-   Copyright (C) 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+   2001, 2002, 2003, 2004 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
@@ -20,29 +22,125 @@
 #ifndef __READUTMP_H__
 # define __READUTMP_H__
 
-# include <stdio.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
+
 # ifdef HAVE_UTMPX_H
+#  ifdef HAVE_UTMP_H
+    /* HPUX 10.20 needs utmp.h, for the definition of e.g., UTMP_FILE.  */
+#   include <utmp.h>
+#  endif
 #  include <utmpx.h>
-#  define STRUCT_UTMP struct utmpx
+#  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
+#  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
+
 # else
 #  include <utmp.h>
-#  define STRUCT_UTMP struct utmp
+#  if !HAVE_DECL_GETUTENT
+    struct utmp *getutent();
+#  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
+
+#  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.  */
+# ifdef 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
+
+# else
+
+#  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
@@ -69,16 +167,32 @@ extern int errno;
 #  define WTMP_FILE "/etc/wtmp"
 # endif
 
-extern STRUCT_UTMP * utmp_contents;
+# 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
 
-# undef PARAMS
-# if defined (__STDC__) && __STDC__
-#  define PARAMS(Args) Args
+# ifdef BOOT_TIME
+#  define UT_TYPE_BOOT_TIME(U) UT_TYPE_EQ (U, BOOT_TIME)
 # else
-#  define PARAMS(Args) ()
+#  define UT_TYPE_BOOT_TIME(U) 0
 # endif
 
-extern char * extract_trimmed_name PARAMS((const STRUCT_UTMP *ut));
-extern int read_utmp PARAMS((const char *filename));
+# 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)))
+
+char *extract_trimmed_name (const STRUCT_UTMP *ut);
+int read_utmp (const char *filename, size_t *n_entries, STRUCT_UTMP **utmp_buf);
 
 #endif /* __READUTMP_H__ */