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[PATCH] login: Assume that _HAVE_UT_* constants are defined


Make the GNU version of bits/utmp.h the generic version because
all remaining ports use it (with a sysdeps override for
Linux s390/s390x).

2019-08-08  Florian Weimer  <fweimer@redhat.com>

	* login/getutid_r.c (__getutid_r): _HAVE_UT_ID and _HAVE_UT_TYPE
	are always true.
	* login/getutmp.c (getutmp): _HAVE_UT_TYPE, _HAVE_UT_PID,
	_HAVE_UT_ID, _HAVE_UT_HOST, _HAVE_UT_TV are always true.
	* login/getutmpx.c (getutmpx): Likewise.
	* login/login.c (login): _HAVE_UT_TYPE, _HAVE_UT_PID are always
	true.
	* login/logout.c (logout): _HAVE_UT_TYPE, _HAVE_UT_HOST,
	_HAVE_UT_TV are always true.
	* login/logwtmp.c (logwtmp): _HAVE_UT_PID, _HAVE_UT_TYPE,
	_HAVE_UT_HOST, _HAVE_UT_TV are always true.
	* login/tst-utmp.c: _HAVE_UT_TYPE, _HAVE_UT_TV are always true.
	* login/utmp_file.c (__libc_setutent): _HAVE_UT_TYPE, _HAVE_UT_ID
	are always true.
	(internal_getut_r): _HAVE_UT_TYPE is always true.
	(__libc_pututline): Likewise.
	* login/programs/utmpdump.c (print_entry): Assume that
	_HAVE_UT_TYPE, _HAVE_UT_PID, _HAVE_UT_ID, _HAVE_UT_HOST,
	_HAVE_UT_TV are always true.
	* sysdeps/generic/utmp-equal.h (__utmp_equal): _HAVE_UT_TYPE,
	_HAVE_UT_ID are always true.
	* sysdeps/gnu/bits/utmp.h: Move to ...
	* bits/utmp.h: ... here, replacing the old file.

diff --git a/bits/utmp.h b/bits/utmp.h
index 4c36ca19ce..3c02dd4f3f 100644
--- a/bits/utmp.h
+++ b/bits/utmp.h
@@ -1,4 +1,4 @@
-/* The `struct utmp' type, describing entries in the utmp file.  Generic/BSDish
+/* The `struct utmp' type, describing entries in the utmp file.
    Copyright (C) 1993-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -21,29 +21,106 @@
 #endif
 
 #include <paths.h>
-#include <time.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <bits/wordsize.h>
 
 
-#define	UT_NAMESIZE	8
-#define	UT_LINESIZE	8
-#define	UT_HOSTSIZE	16
+#define UT_LINESIZE	32
+#define UT_NAMESIZE	32
+#define UT_HOSTSIZE	256
 
 
+/* The structure describing an entry in the database of
+   previous logins.  */
 struct lastlog
   {
-    time_t ll_time;
+#if __WORDSIZE_TIME64_COMPAT32
+    int32_t ll_time;
+#else
+    __time_t ll_time;
+#endif
     char ll_line[UT_LINESIZE];
     char ll_host[UT_HOSTSIZE];
   };
 
+
+/* The structure describing the status of a terminated process.  This
+   type is used in `struct utmp' below.  */
+struct exit_status
+  {
+    short int e_termination;	/* Process termination status.  */
+    short int e_exit;		/* Process exit status.  */
+  };
+
+
+/* The structure describing an entry in the user accounting database.  */
 struct utmp
+{
+  short int ut_type;		/* Type of login.  */
+  pid_t ut_pid;			/* Process ID of login process.  */
+  char ut_line[UT_LINESIZE]
+    __attribute_nonstring__;	/* Devicename.  */
+  char ut_id[4];		/* Inittab ID.  */
+  char ut_user[UT_NAMESIZE]
+    __attribute_nonstring__;	/* Username.  */
+  char ut_host[UT_HOSTSIZE]
+    __attribute_nonstring__;	/* Hostname for remote login.  */
+  struct exit_status ut_exit;	/* Exit status of a process marked
+				   as DEAD_PROCESS.  */
+/* The ut_session and ut_tv fields must be the same size when compiled
+   32- and 64-bit.  This allows data files and shared memory to be
+   shared between 32- and 64-bit applications.  */
+#if __WORDSIZE_TIME64_COMPAT32
+  int32_t ut_session;		/* Session ID, used for windowing.  */
+  struct
   {
-    char ut_line[UT_LINESIZE];
-    char ut_user[UT_NAMESIZE];
-#define ut_name ut_user
-    char ut_host[UT_HOSTSIZE];
-    long int ut_time;
-  };
+    int32_t tv_sec;		/* Seconds.  */
+    int32_t tv_usec;		/* Microseconds.  */
+  } ut_tv;			/* Time entry was made.  */
+#else
+  long int ut_session;		/* Session ID, used for windowing.  */
+  struct timeval ut_tv;		/* Time entry was made.  */
+#endif
 
+  int32_t ut_addr_v6[4];	/* Internet address of remote host.  */
+  char __glibc_reserved[20];		/* Reserved for future use.  */
+};
 
-#define _HAVE_UT_HOST 1		/* We have the ut_host field.  */
+/* Backwards compatibility hacks.  */
+#define ut_name		ut_user
+#ifndef _NO_UT_TIME
+/* We have a problem here: `ut_time' is also used otherwise.  Define
+   _NO_UT_TIME if the compiler complains.  */
+# define ut_time	ut_tv.tv_sec
+#endif
+#define ut_xtime	ut_tv.tv_sec
+#define ut_addr		ut_addr_v6[0]
+
+
+/* Values for the `ut_type' field of a `struct utmp'.  */
+#define EMPTY		0	/* No valid user accounting information.  */
+
+#define RUN_LVL		1	/* The system's runlevel.  */
+#define BOOT_TIME	2	/* Time of system boot.  */
+#define NEW_TIME	3	/* Time after system clock changed.  */
+#define OLD_TIME	4	/* Time when system clock changed.  */
+
+#define INIT_PROCESS	5	/* Process spawned by the init process.  */
+#define LOGIN_PROCESS	6	/* Session leader of a logged in user.  */
+#define USER_PROCESS	7	/* Normal process.  */
+#define DEAD_PROCESS	8	/* Terminated process.  */
+
+#define ACCOUNTING	9
+
+/* Old Linux name for the EMPTY type.  */
+#define UT_UNKNOWN	EMPTY
+
+
+/* Tell the user that we have a modern system with UT_HOST, UT_PID,
+   UT_TYPE, UT_ID and UT_TV fields.  */
+#define _HAVE_UT_TYPE	1
+#define _HAVE_UT_PID	1
+#define _HAVE_UT_ID	1
+#define _HAVE_UT_TV	1
+#define _HAVE_UT_HOST	1
diff --git a/login/getutid_r.c b/login/getutid_r.c
index 86ffc85b01..460d94be0c 100644
--- a/login/getutid_r.c
+++ b/login/getutid_r.c
@@ -32,7 +32,6 @@ __libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
 int
 __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
 {
-#if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
   int retval;
 
   /* Test whether ID has any of the legal types.  */
@@ -54,10 +53,6 @@ __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
   __libc_lock_unlock (__libc_utmp_lock);
 
   return retval;
-#else	/* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
-  __set_errno (ENOSYS);
-  return -1;
-#endif
 }
 libc_hidden_def (__getutid_r)
 weak_alias (__getutid_r, getutid_r)
diff --git a/login/getutmp.c b/login/getutmp.c
index 73bc15d781..4e3be11216 100644
--- a/login/getutmp.c
+++ b/login/getutmp.c
@@ -23,23 +23,11 @@
 void
 getutmp (const struct utmpx *utmpx, struct utmp *utmp)
 {
-#if _HAVE_UT_TYPE - 0
   utmp->ut_type = utmpx->ut_type;
-#endif
-#if _HAVE_UT_PID - 0
   utmp->ut_pid = utmpx->ut_pid;
-#endif
   memcpy (utmp->ut_line, utmpx->ut_line, sizeof (utmp->ut_line));
   memcpy (utmp->ut_user, utmpx->ut_user, sizeof (utmp->ut_user));
-#if _HAVE_UT_ID - 0
   memcpy (utmp->ut_id, utmpx->ut_id, sizeof (utmp->ut_id));
-#endif
-#if _HAVE_UT_HOST - 0
   memcpy (utmp->ut_host, utmpx->ut_host, sizeof (utmp->ut_host));
-#endif
-#if _HAVE_UT_TV - 0
   utmp->ut_tv = utmpx->ut_tv;
-#else
-  utmp->ut_time = utmpx->ut_time;
-#endif
 }
diff --git a/login/getutmpx.c b/login/getutmpx.c
index b181d9bc30..da28d339ab 100644
--- a/login/getutmpx.c
+++ b/login/getutmpx.c
@@ -24,24 +24,11 @@ void
 getutmpx (const struct utmp *utmp, struct utmpx *utmpx)
 {
   memset (utmpx, 0, sizeof (struct utmpx));
-
-#if _HAVE_UT_TYPE - 0
   utmpx->ut_type = utmp->ut_type;
-#endif
-#if _HAVE_UT_PID - 0
   utmpx->ut_pid = utmp->ut_pid;
-#endif
   memcpy (utmpx->ut_line, utmp->ut_line, sizeof (utmp->ut_line));
   memcpy (utmpx->ut_user, utmp->ut_user, sizeof (utmp->ut_user));
-#if _HAVE_UT_ID - 0
   memcpy (utmpx->ut_id, utmp->ut_id, sizeof (utmp->ut_id));
-#endif
-#if _HAVE_UT_HOST - 0
   memcpy (utmpx->ut_host, utmp->ut_host, sizeof (utmp->ut_host));
-#endif
-#if _HAVE_UT_TV - 0
   utmpx->ut_tv = utmp->ut_tv;
-#else
-  utmpx->ut_time = utmp->ut_time;
-#endif
 }
diff --git a/login/login.c b/login/login.c
index 09ef3f75a5..b7d638c692 100644
--- a/login/login.c
+++ b/login/login.c
@@ -91,12 +91,8 @@ login (const struct utmp *ut)
   struct utmp copy = *ut;
 
   /* Fill in those fields we supply.  */
-#if _HAVE_UT_TYPE - 0
   copy.ut_type = USER_PROCESS;
-#endif
-#if _HAVE_UT_PID - 0
   copy.ut_pid = getpid ();
-#endif
 
   /* Seek tty.  */
   found_tty = tty_name (STDIN_FILENO, &tty, sizeof (_tty));
diff --git a/login/logout.c b/login/logout.c
index 85254d0324..5015c1af0b 100644
--- a/login/logout.c
+++ b/login/logout.c
@@ -36,9 +36,7 @@ logout (const char *line)
   setutent ();
 
   /* Fill in search information.  */
-#if _HAVE_UT_TYPE - 0
   tmp.ut_type = USER_PROCESS;
-#endif
   strncpy (tmp.ut_line, line, sizeof tmp.ut_line);
 
   /* Read the record.  */
@@ -46,20 +44,12 @@ logout (const char *line)
     {
       /* Clear information about who & from where.  */
       memset (ut->ut_name, '\0', sizeof ut->ut_name);
-#if _HAVE_UT_HOST - 0
       memset (ut->ut_host, '\0', sizeof ut->ut_host);
-#endif
-#if _HAVE_UT_TV - 0
       struct timeval tv;
       __gettimeofday (&tv, NULL);
       ut->ut_tv.tv_sec = tv.tv_sec;
       ut->ut_tv.tv_usec = tv.tv_usec;
-#else
-      ut->ut_time = time (NULL);
-#endif
-#if _HAVE_UT_TYPE - 0
       ut->ut_type = DEAD_PROCESS;
-#endif
 
       if (pututline (ut) != NULL)
 	result = 1;
diff --git a/login/logwtmp.c b/login/logwtmp.c
index f53187121c..50d14976c7 100644
--- a/login/logwtmp.c
+++ b/login/logwtmp.c
@@ -30,26 +30,16 @@ logwtmp (const char *line, const char *name, const char *host)
 
   /* Set information in new entry.  */
   memset (&ut, 0, sizeof (ut));
-#if _HAVE_UT_PID - 0
   ut.ut_pid = getpid ();
-#endif
-#if _HAVE_UT_TYPE - 0
   ut.ut_type = name[0] ? USER_PROCESS : DEAD_PROCESS;
-#endif
   strncpy (ut.ut_line, line, sizeof ut.ut_line);
   strncpy (ut.ut_name, name, sizeof ut.ut_name);
-#if _HAVE_UT_HOST - 0
   strncpy (ut.ut_host, host, sizeof ut.ut_host);
-#endif
 
-#if _HAVE_UT_TV - 0
   struct timeval tv;
   __gettimeofday (&tv, NULL);
   ut.ut_tv.tv_sec = tv.tv_sec;
   ut.ut_tv.tv_usec = tv.tv_usec;
-#else
-  ut.ut_time = time (NULL);
-#endif
 
   updwtmp (_PATH_WTMP, &ut);
 }
diff --git a/login/programs/utmpdump.c b/login/programs/utmpdump.c
index 4c312f0939..85d8e31b43 100644
--- a/login/programs/utmpdump.c
+++ b/login/programs/utmpdump.c
@@ -37,47 +37,11 @@ print_entry (struct utmp *up)
   temp_tv.tv_sec = up->ut_tv.tv_sec;
   temp_tv.tv_usec = up->ut_tv.tv_usec;
 
-  (printf) (
-	    /* The format string.  */
-#if _HAVE_UT_TYPE
-	    "[%d] "
-#endif
-#if _HAVE_UT_PID
-	    "[%05d] "
-#endif
-#if _HAVE_UT_ID
-	    "[%-4.4s] "
-#endif
-	    "[%-8.8s] [%-12.12s]"
-#if _HAVE_UT_HOST
-	    " [%-16.16s]"
-#endif
-	    " [%-15.15s]"
-#if _HAVE_UT_TV
-	    " [%ld]"
-#endif
-	    "\n"
-	    /* The arguments.  */
-#if _HAVE_UT_TYPE
-	    , up->ut_type
-#endif
-#if _HAVE_UT_PID
-	    , up->ut_pid
-#endif
-#if _HAVE_UT_ID
-	    , up->ut_id
-#endif
-	    , up->ut_user, up->ut_line
-#if _HAVE_UT_HOST
-	    , up->ut_host
-#endif
-#if _HAVE_UT_TV
-	    , 4 + ctime (&temp_tv.tv_sec)
-	    , (long int) temp_tv.tv_usec
-#else
-	    , 4 + ctime (&up->ut_time)
-#endif
-	   );
+  printf ("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-16.16s] [%-15.15s]"
+	  " [%ld]\n",
+	  up->ut_type, up->ut_pid, up->ut_id, up->ut_user, up->ut_line,
+	  up->ut_host, 4 + ctime (&temp_tv.tv_sec),
+	  (long int) temp_tv.tv_usec);
 }
 
 int
diff --git a/login/tst-utmp.c b/login/tst-utmp.c
index ce48e8326e..02d0c1fe8c 100644
--- a/login/tst-utmp.c
+++ b/login/tst-utmp.c
@@ -39,8 +39,6 @@
 #endif
 
 
-#if defined UTMPX || _HAVE_UT_TYPE
-
 /* Prototype for our test function.  */
 static int do_test (int argc, char *argv[]);
 
@@ -75,11 +73,7 @@ do_prepare (int argc, char *argv[])
 
 struct utmp entry[] =
 {
-#if defined UTMPX || _HAVE_UT_TV
 #define UT(a)  .ut_tv = { .tv_sec = (a)}
-#else
-#define UT(a)  .ut_time = (a)
-#endif
 
   { .ut_type = BOOT_TIME, .ut_pid = 1, UT(1000) },
   { .ut_type = RUN_LVL, .ut_pid = 1, UT(2000) },
@@ -167,11 +161,7 @@ simulate_login (const char *line, const char *user)
 	    entry[n].ut_pid = (entry_pid += 27);
 	  entry[n].ut_type = USER_PROCESS;
 	  strncpy (entry[n].ut_user, user, sizeof (entry[n].ut_user));
-#if defined UTMPX || _HAVE_UT_TV - 0
 	  entry[n].ut_tv.tv_sec = (entry_time += 1000);
-#else
-          entry[n].ut_time = (entry_time += 1000);
-#endif
 	  setutent ();
 
 	  if (pututline (&entry[n]) == NULL)
@@ -201,11 +191,7 @@ simulate_logout (const char *line)
 	{
 	  entry[n].ut_type = DEAD_PROCESS;
 	  strncpy (entry[n].ut_user, "", sizeof (entry[n].ut_user));
-#if defined UTMPX || _HAVE_UT_TV - 0
           entry[n].ut_tv.tv_sec = (entry_time += 1000);
-#else
-          entry[n].ut_time = (entry_time += 1000);
-#endif
 	  setutent ();
 
 	  if (pututline (&entry[n]) == NULL)
@@ -390,14 +376,3 @@ do_test (int argc, char *argv[])
 
   return result;
 }
-
-#else
-
-/* No field 'ut_type' in struct utmp.  */
-int
-main (void)
-{
-  return 0;
-}
-
-#endif
diff --git a/login/utmp_file.c b/login/utmp_file.c
index cb8a02825c..9badf11fb3 100644
--- a/login/utmp_file.c
+++ b/login/utmp_file.c
@@ -129,14 +129,7 @@ __libc_setutent (void)
   file_offset = 0;
 
   /* Make sure the entry won't match.  */
-#if _HAVE_UT_TYPE - 0
   last_entry.ut_type = -1;
-#else
-  last_entry.ut_line[0] = '\177';
-# if _HAVE_UT_ID - 0
-  last_entry.ut_id[0] = '\0';
-# endif
-#endif
 
   return 1;
 }
@@ -201,7 +194,6 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer,
       LOCKING_FAILED ();
     }
 
-#if _HAVE_UT_TYPE - 0
   if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME
       || id->ut_type == OLD_TIME || id->ut_type == NEW_TIME)
     {
@@ -225,7 +217,6 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer,
 	}
     }
   else
-#endif /* _HAVE_UT_TYPE */
     {
       /* Search for the next entry with the specified ID and with type
 	 INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS.  */
@@ -316,13 +307,10 @@ __libc_getutline_r (const struct utmp *line, struct utmp *buffer,
       file_offset += sizeof (struct utmp);
 
       /* Stop if we found a user or login entry.  */
-      if (
-#if _HAVE_UT_TYPE - 0
-	  (last_entry.ut_type == USER_PROCESS
+      if ((last_entry.ut_type == USER_PROCESS
 	   || last_entry.ut_type == LOGIN_PROCESS)
-	  &&
-#endif
-	  !strncmp (line->ut_line, last_entry.ut_line, sizeof line->ut_line))
+	  && (strncmp (line->ut_line, last_entry.ut_line, sizeof line->ut_line)
+	      == 0))
 	break;
     }
 
@@ -368,16 +356,12 @@ __libc_pututline (const struct utmp *data)
 
   /* Find the correct place to insert the data.  */
   if (file_offset > 0
-      && (
-#if _HAVE_UT_TYPE - 0
-	  (last_entry.ut_type == data->ut_type
+      && ((last_entry.ut_type == data->ut_type
 	   && (last_entry.ut_type == RUN_LVL
 	       || last_entry.ut_type == BOOT_TIME
 	       || last_entry.ut_type == OLD_TIME
 	       || last_entry.ut_type == NEW_TIME))
-	  ||
-#endif
-	  __utmp_equal (&last_entry, data)))
+	  || __utmp_equal (&last_entry, data)))
     found = 1;
   else
     {
diff --git a/sysdeps/generic/utmp-equal.h b/sysdeps/generic/utmp-equal.h
index d077147a7a..d61cbb3300 100644
--- a/sysdeps/generic/utmp-equal.h
+++ b/sysdeps/generic/utmp-equal.h
@@ -27,26 +27,16 @@
 static int
 __utmp_equal (const struct utmp *entry, const struct utmp *match)
 {
-  return
-    (
-#if _HAVE_UT_TYPE - 0
-     (entry->ut_type == INIT_PROCESS
-      || entry->ut_type == LOGIN_PROCESS
-      || entry->ut_type == USER_PROCESS
-      || entry->ut_type == DEAD_PROCESS)
-     &&
-     (match->ut_type == INIT_PROCESS
-      || match->ut_type == LOGIN_PROCESS
-      || match->ut_type == USER_PROCESS
-      || match->ut_type == DEAD_PROCESS)
-     &&
-#endif
-#if _HAVE_UT_ID - 0
-     (entry->ut_id[0] && match->ut_id[0]
-      ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
-      : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)
-#else
-     strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0
-#endif
-     );
+  return (entry->ut_type == INIT_PROCESS
+          || entry->ut_type == LOGIN_PROCESS
+          || entry->ut_type == USER_PROCESS
+          || entry->ut_type == DEAD_PROCESS)
+    && (match->ut_type == INIT_PROCESS
+        || match->ut_type == LOGIN_PROCESS
+        || match->ut_type == USER_PROCESS
+        || match->ut_type == DEAD_PROCESS)
+    && (entry->ut_id[0] && match->ut_id[0]
+        ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
+        : (strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line)
+           == 0));
 }
diff --git a/sysdeps/gnu/bits/utmp.h b/sysdeps/gnu/bits/utmp.h
deleted file mode 100644
index 7357034cb6..0000000000
--- a/sysdeps/gnu/bits/utmp.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/* The `struct utmp' type, describing entries in the utmp file.  GNU version.
-   Copyright (C) 1993-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _UTMP_H
-# error "Never include <bits/utmp.h> directly; use <utmp.h> instead."
-#endif
-
-#include <paths.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <bits/wordsize.h>
-
-
-#define UT_LINESIZE	32
-#define UT_NAMESIZE	32
-#define UT_HOSTSIZE	256
-
-
-/* The structure describing an entry in the database of
-   previous logins.  */
-struct lastlog
-  {
-#if __WORDSIZE_TIME64_COMPAT32
-    int32_t ll_time;
-#else
-    __time_t ll_time;
-#endif
-    char ll_line[UT_LINESIZE];
-    char ll_host[UT_HOSTSIZE];
-  };
-
-
-/* The structure describing the status of a terminated process.  This
-   type is used in `struct utmp' below.  */
-struct exit_status
-  {
-    short int e_termination;	/* Process termination status.  */
-    short int e_exit;		/* Process exit status.  */
-  };
-
-
-/* The structure describing an entry in the user accounting database.  */
-struct utmp
-{
-  short int ut_type;		/* Type of login.  */
-  pid_t ut_pid;			/* Process ID of login process.  */
-  char ut_line[UT_LINESIZE]
-    __attribute_nonstring__;	/* Devicename.  */
-  char ut_id[4];		/* Inittab ID.  */
-  char ut_user[UT_NAMESIZE]
-    __attribute_nonstring__;	/* Username.  */
-  char ut_host[UT_HOSTSIZE]
-    __attribute_nonstring__;	/* Hostname for remote login.  */
-  struct exit_status ut_exit;	/* Exit status of a process marked
-				   as DEAD_PROCESS.  */
-/* The ut_session and ut_tv fields must be the same size when compiled
-   32- and 64-bit.  This allows data files and shared memory to be
-   shared between 32- and 64-bit applications.  */
-#if __WORDSIZE_TIME64_COMPAT32
-  int32_t ut_session;		/* Session ID, used for windowing.  */
-  struct
-  {
-    int32_t tv_sec;		/* Seconds.  */
-    int32_t tv_usec;		/* Microseconds.  */
-  } ut_tv;			/* Time entry was made.  */
-#else
-  long int ut_session;		/* Session ID, used for windowing.  */
-  struct timeval ut_tv;		/* Time entry was made.  */
-#endif
-
-  int32_t ut_addr_v6[4];	/* Internet address of remote host.  */
-  char __glibc_reserved[20];		/* Reserved for future use.  */
-};
-
-/* Backwards compatibility hacks.  */
-#define ut_name		ut_user
-#ifndef _NO_UT_TIME
-/* We have a problem here: `ut_time' is also used otherwise.  Define
-   _NO_UT_TIME if the compiler complains.  */
-# define ut_time	ut_tv.tv_sec
-#endif
-#define ut_xtime	ut_tv.tv_sec
-#define ut_addr		ut_addr_v6[0]
-
-
-/* Values for the `ut_type' field of a `struct utmp'.  */
-#define EMPTY		0	/* No valid user accounting information.  */
-
-#define RUN_LVL		1	/* The system's runlevel.  */
-#define BOOT_TIME	2	/* Time of system boot.  */
-#define NEW_TIME	3	/* Time after system clock changed.  */
-#define OLD_TIME	4	/* Time when system clock changed.  */
-
-#define INIT_PROCESS	5	/* Process spawned by the init process.  */
-#define LOGIN_PROCESS	6	/* Session leader of a logged in user.  */
-#define USER_PROCESS	7	/* Normal process.  */
-#define DEAD_PROCESS	8	/* Terminated process.  */
-
-#define ACCOUNTING	9
-
-/* Old Linux name for the EMPTY type.  */
-#define UT_UNKNOWN	EMPTY
-
-
-/* Tell the user that we have a modern system with UT_HOST, UT_PID,
-   UT_TYPE, UT_ID and UT_TV fields.  */
-#define _HAVE_UT_TYPE	1
-#define _HAVE_UT_PID	1
-#define _HAVE_UT_ID	1
-#define _HAVE_UT_TV	1
-#define _HAVE_UT_HOST	1


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