1 files changed, 27 insertions, 0 deletions
diff --git a/libgo/go/syscall/errstr.go b/libgo/go/syscall/errstr.go
new file mode 100644
index 00000000000..d9f3fe82eb4
--- /dev/null
+++ b/libgo/go/syscall/errstr.go
@@ -0,0 +1,27 @@
+// errstr.go -- Error strings.
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+//sysnb	strerror_r(errnum int, buf []byte) (errno int)
+//strerror_r(errnum int, buf *byte, buflen Size_t) int
+
+func Errstr(errnum int) string {
+	for len := 128; ; len *= 2 {
+		b := make([]byte, len)
+		err := strerror_r(errnum, b)
+		if err == 0 {
+			i := 0
+			for b[i] != 0 {
+				i++
+			}
+			return string(b[:i])
+		}
+		if err != ERANGE {
+			return "Errstr failure"
+		}
+	}
+}