1 files changed, 30 insertions, 0 deletions
diff --git a/src/pkg/syscall/errstr.go b/src/pkg/syscall/errstr.go
new file mode 100644
index 000000000..67a529d34
--- /dev/null
+++ b/src/pkg/syscall/errstr.go
@@ -0,0 +1,30 @@
+// 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
+
+import "syscall"
+
+func str(val int) string {  // do it here rather than with fmt to avoid dependency
+	if val < 0 {
+		return "-" + str(-val);
+	}
+	var buf [32]byte;  // big enough for int64
+	i := len(buf)-1;
+	for val >= 10 {
+		buf[i] = byte(val%10 + '0');
+		i--;
+		val /= 10;
+	}
+	buf[i] = byte(val + '0');
+	return string(buf[i:len(buf)]);
+}
+
+func Errstr(errno int) string {
+	if errno < 0 || errno >= int(len(errors)) {
+		return "error " + str(errno)
+	}
+	return errors[errno]
+}
+