Add source.

1 files changed, 49 insertions, 0 deletions

diff --git a/sdk/std/utmp.c b/sdk/std/utmp.c
new file mode 100644
index 0000000..78cbf64
--- /dev/null
+++ b/sdk/std/utmp.c
@@ -0,0 +1,49 @@
+/*
+ * Portable emulation of utmp access routines, such as for broken BSD.
+ * $Id$
+ * Copyright (c) 1997 by Tycho Softworks.
+ * For conditions of distribution and use see license.
+ */
+
+#include <std/utmp.h>
+#include <std/files.h>
+
+#ifdef	GETUTENT_F_MISSING
+
+static	fd_t	ut = -1;
+static	struct	utmp	utmp;
+
+void	setutent(void)
+{
+	if(ut < 0)
+		ut = open(_PATH_UTMP, O_RDONLY);
+	if(ut < 0)
+		return;
+
+	lseek(ut, 0l, SEEK_SET);
+}
+
+void	endutent(void)
+{
+	if(ut > -1)
+	{
+		close(ut);
+		ut = -1;
+	}
+}
+
+struct	utmp	*getutent(void)
+{
+	if(ut < 0)
+		setutent();
+
+	if(ut < 0)
+		return NULL;
+
+	if(read(ut, &utmp, sizeof(utmp)) < sizeof(utmp))
+		return NULL;
+
+	return &utmp;
+}
+
+#endif