1 files changed, 85 insertions, 0 deletions
diff --git a/newlib/libc/unix/getut.c b/newlib/libc/unix/getut.c
new file mode 100644
index 00000000000..d716b324c38
--- /dev/null
+++ b/newlib/libc/unix/getut.c
@@ -0,0 +1,85 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <utmp.h>
+#include <_syslist.h>
+
+static int utmp_fd = -2;
+static char *utmp_file = UTMP_FILE;
+
+static struct utmp utmp_data;
+
+void
+setutent ()
+{
+  if (utmp_fd == -2)
+    {
+      utmp_fd = _open (utmp_file, O_RDONLY);
+    }
+  _lseek (utmp_fd, 0, SEEK_SET);
+}
+
+void
+endutent ()
+{
+  _close (utmp_fd);
+  utmp_fd = -2;
+}
+
+void
+utmpname (char *file)
+{
+  extern char *strdup (char *);
+
+  utmp_file = strdup (file);
+}
+
+struct utmp *
+getutent ()
+{
+  if (utmp_fd == -2)
+    setutent ();
+  if (_read (utmp_fd, &utmp_data, sizeof (utmp_data)) < sizeof (utmp_data))
+    return 0;
+  return &utmp_data;
+}
+
+struct utmp *
+getutid (struct utmp *id)
+{
+  while (_read (utmp_fd, &utmp_data, sizeof (utmp_data)) == sizeof (utmp_data))
+    {
+      switch (id->ut_type)
+	{
+	case RUN_LVL:
+	case BOOT_TIME:
+	case OLD_TIME:
+	case NEW_TIME:
+	  if (id->ut_type == utmp_data.ut_type)
+	    return &utmp_data;
+	case INIT_PROCESS:
+	case LOGIN_PROCESS:
+	case USER_PROCESS:
+	case DEAD_PROCESS:
+	  if (id->ut_id == utmp_data.ut_id)
+	    return &utmp_data;
+	default:
+	  abort ();
+	}
+    }
+  return 0;
+}
+
+struct utmp *
+getutline (struct utmp *line)
+{
+  while (_read (utmp_fd, &utmp_data, sizeof (utmp_data)) == sizeof (utmp_data))
+    {
+      if ((utmp_data.ut_type == LOGIN_PROCESS ||
+	   utmp_data.ut_type == USER_PROCESS) &&
+	  !strncmp (utmp_data.ut_line, line->ut_line,
+		    sizeof (utmp_data.ut_line)))
+	return &utmp_data;
+    }
+
+  return 0;
+}