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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/login/programs/utmpdump.c
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
downloadglibc-zack/build-layout-experiment.tar.gz
glibc-zack/build-layout-experiment.tar.xz
glibc-zack/build-layout-experiment.zip
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/login/programs/utmpdump.c')
-rw-r--r--REORG.TODO/login/programs/utmpdump.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/REORG.TODO/login/programs/utmpdump.c b/REORG.TODO/login/programs/utmpdump.c
new file mode 100644
index 0000000000..35bf0f9c27
--- /dev/null
+++ b/REORG.TODO/login/programs/utmpdump.c
@@ -0,0 +1,99 @@
+/* utmpdump - dump utmp-like files.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
+
+   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/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <utmp.h>
+
+static void
+print_entry (struct utmp *up)
+{
+  /* Mixed 32-/64-bit systems may have timeval structs of different sixe
+     but need struct utmp to be the same size.  So in 64-bit up->ut_tv may
+     not be a timeval but a struct of __int32_t's.  This would cause a compile
+     time warning and a formating error when 32-bit int is passed where
+     a 64-bit long is expected. So copy up->up_tv to a temporary timeval.
+     This is 32-/64-bit agnostic and expands the timeval fields to the
+     expected size as needed. */
+  struct timeval temp_tv;
+  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
+	   );
+}
+
+int
+main (int argc, char *argv[])
+{
+  struct utmp *up;
+
+  if (argc > 1)
+    utmpname (argv[1]);
+
+  setutent ();
+
+  while ((up = getutent ()))
+    print_entry (up);
+
+  endutent ();
+
+  return EXIT_SUCCESS;
+}