1 files changed, 37 insertions, 1 deletions
diff --git a/libgo/go/time/sys_unix.go b/libgo/go/time/sys_unix.go
index 56a7414e0ce..7f69b492c9f 100644
--- a/libgo/go/time/sys_unix.go
+++ b/libgo/go/time/sys_unix.go
@@ -6,7 +6,10 @@
 
 package time
 
-import "syscall"
+import (
+	"errors"
+	"syscall"
+)
 
 // for testing: whatever interrupts a sleep
 func interrupt() {
@@ -38,3 +41,36 @@ func readFile(name string) ([]byte, error) {
 	}
 	return ret, err
 }
+
+func open(name string) (uintptr, error) {
+	fd, err := syscall.Open(name, syscall.O_RDONLY, 0)
+	if err != nil {
+		return 0, err
+	}
+	return uintptr(fd), nil
+}
+
+func closefd(fd uintptr) {
+	syscall.Close(int(fd))
+}
+
+func preadn(fd uintptr, buf []byte, off int) error {
+	whence := 0
+	if off < 0 {
+		whence = 2
+	}
+	if _, err := syscall.Seek(int(fd), int64(off), whence); err != nil {
+		return err
+	}
+	for len(buf) > 0 {
+		m, err := syscall.Read(int(fd), buf)
+		if m <= 0 {
+			if err == nil {
+				return errors.New("short read")
+			}
+			return err
+		}
+		buf = buf[m:]
+	}
+	return nil
+}