1 files changed, 70 insertions, 0 deletions
diff --git a/lib/utent.c b/lib/utent.c
new file mode 100644
index 0000000..d5e6dae
--- /dev/null
+++ b/lib/utent.c
@@ -0,0 +1,70 @@
+/*
+ * SPDX-FileCopyrightText: 1993 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#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