1 files changed, 43 insertions, 0 deletions

diff --git a/lib/libcom_err/et_name.c b/lib/libcom_err/et_name.c
new file mode 100644
index 000000000000..a896bab84e18
--- /dev/null
+++ b/lib/libcom_err/et_name.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright 1987 by MIT Student Information Processing Board
+ *
+ * For copyright info, see mit-sipb-copyright.h.
+ */
+
+#include "error_table.h"
+#include "mit-sipb-copyright.h"
+#include "internal.h"
+
+#ifndef	lint
+static const char copyright[] =
+    "Copyright 1987,1988 by Student Information Processing Board, Massachusetts Institute of Technology";
+static const char rcsid_et_name_c[] =
+    "$Header: et_name.c,v 1.7 89/01/01 06:14:56 raeburn Exp $";
+#endif
+
+static const char char_set[] =
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
+
+static char buf[6];
+
+const char * error_table_name(num)
+    int num;
+{
+    int ch;
+    int i;
+    char *p;
+
+    /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
+    p = buf;
+    num >>= ERRCODE_RANGE;
+    /* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
+    num &= 077777777;
+    /* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
+    for (i = 4; i >= 0; i--) {
+	ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
+	if (ch != 0)
+	    *p++ = char_set[ch-1];
+    }
+    *p = '\0';
+    return(buf);
+}