1 files changed, 93 insertions, 0 deletions
diff --git a/lib/utent.c b/lib/utent.c
new file mode 100644
index 0000000..45af260
--- /dev/null
+++ b/lib/utent.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 1993 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 1998, Marek Michałkiewicz
+ * Copyright (c) 2005       , Tomasz Kłoczko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ *    endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ifndef	HAVE_GETUTENT
+
+#include "defines.h"
+#include <stdio.h>
+#include <fcntl.h>
+#include <utmp.h>
+
+#ifndef	lint
+static char rcsid[] = "$Id$";
+#endif
+
+static int utmp_fd = -1;
+static struct utmp utmp_buf;
+
+/*
+ * setutent - open or rewind the utmp file
+ */
+
+void setutent (void)
+{
+	if (utmp_fd == -1)
+		if ((utmp_fd = open (_UTMP_FILE, O_RDWR)) == -1)
+			utmp_fd = open (_UTMP_FILE, O_RDONLY);
+
+	if (utmp_fd != -1)
+		lseek (utmp_fd, (off_t) 0L, SEEK_SET);
+}
+
+/*
+ * endutent - close the utmp file
+ */
+
+void endutent (void)
+{
+	if (utmp_fd != -1)
+		close (utmp_fd);
+
+	utmp_fd = -1;
+}
+
+/*
+ * getutent - get the next record from the utmp file
+ */
+
+struct utmp *getutent (void)
+{
+	if (utmp_fd == -1)
+		setutent ();
+
+	if (utmp_fd == -1)
+		return 0;
+
+	if (read (utmp_fd, &utmp_buf, sizeof utmp_buf) != sizeof utmp_buf)
+		return 0;
+
+	return &utmp_buf;
+}
+#else
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif