X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Freadutmp.h;h=bfbcca1b7232df3c602a569b490b26f7813670ee;hb=23eecb48e39afd0d267d64d40ba6bf97aa865e13;hp=3d4ef253d40878cf53f6bed4a2661ea24582bda9;hpb=54e6da3dfa8dd464cf37dc0cb6a038e590fe421e;p=gnulib.git

diff --git a/lib/readutmp.h b/lib/readutmp.h
index 3d4ef253d..bfbcca1b7 100644
--- a/lib/readutmp.h
+++ b/lib/readutmp.h
@@ -1,10 +1,11 @@
 /* Declarations for GNU's read utmp module.
-   Copyright (C) 1992-2000 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1992-2007, 2009-2013 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
@@ -12,25 +13,32 @@
    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)
@@ -40,8 +48,33 @@
 #  ifdef HAVE_UTMPXNAME
 #   define UTMP_NAME_FUNCTION utmpxname
 #  endif
-# else
+
+#  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
@@ -50,10 +83,31 @@
 #  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.  */
-# ifdef HAVE_UTMPX_H
+# if HAVE_UTMPX_H
 
 #  if HAVE_STRUCT_UTMPX_UT_USER
 #   define UT_USER(Utmp) ((Utmp)->ut_user)
@@ -63,35 +117,39 @@
 #   define UT_USER(Utmp) ((Utmp)->ut_name)
 #  endif
 
-# else
+# elif HAVE_UTMP_H
 
 #  if HAVE_STRUCT_UTMP_UT_USER
-#   define UT_USER(Utmp) 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
+#   define UT_USER(Utmp) ((Utmp)->ut_name)
 #  endif
 
 # endif
 
-typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
+# define HAVE_STRUCT_XTMP_UT_EXIT \
+    (HAVE_STRUCT_UTMP_UT_EXIT \
+     || HAVE_STRUCT_UTMPX_UT_EXIT)
 
-# include <time.h>
-# ifdef HAVE_SYS_PARAM_H
-#  include <sys/param.h>
-# endif
+# define HAVE_STRUCT_XTMP_UT_ID \
+    (HAVE_STRUCT_UTMP_UT_ID \
+     || HAVE_STRUCT_UTMPX_UT_ID)
 
-# include <errno.h>
-# ifndef errno
-extern int errno;
-# endif
+# 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)
+# 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
 
@@ -113,15 +171,46 @@ extern int errno;
 #  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__ */