1 files changed, 73 insertions, 0 deletions
diff --git a/libutil/logwtmp.c b/libutil/logwtmp.c
new file mode 100644
index 000000000..d8ee3da05
--- /dev/null
+++ b/libutil/logwtmp.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <string.h>
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <utmp.h>
+
+
+void logwtmp (const char *line, const char *name, const char *host)
+{
+  struct utmp ut;
+  struct flock lock;
+  int ut_fd;
+
+
+  /* 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
+  __gettimeofday (&ut.ut_tv, NULL);
+#else
+  time (&ut.ut_time);
+#endif
+
+/*  updwtmp (_PATH_WTMP, &ut); */
+/* from tinylogin */
+
+	if ((ut_fd = open(_PATH_WTMP, O_APPEND | O_WRONLY)) >= 0) {
+		/* Lock the utmp file before updating */
+		lock.l_type = F_WRLCK;
+		lock.l_whence = SEEK_SET;
+		lock.l_start = 0;
+		lock.l_len = 0;
+		if (fcntl(ut_fd, F_SETLK, &lock) >= 0) {
+			write(ut_fd, (void *) &ut, sizeof(ut));
+			/* Now unlock the utmp file */
+			lock.l_type = F_UNLCK;
+		}
+		close(ut_fd);
+	}
+
+
+}