1 files changed, 11 insertions, 15 deletions

diff --git a/libgo/go/os/file_plan9.go b/libgo/go/os/file_plan9.go
index c83fa028b9..5276a7ec54 100644
--- a/libgo/go/os/file_plan9.go
+++ b/libgo/go/os/file_plan9.go
@@ -5,14 +5,15 @@
 package os
 
 import (
+	"io"
 	"runtime"
 	"syscall"
 	"time"
 )
 
-// File represents an open file descriptor.
-type File struct {
-	*file
+// fixLongPath is a noop on non-Windows platforms.
+func fixLongPath(path string) string {
+	return path
 }
 
 // file is the real representation of *File.
@@ -75,8 +76,8 @@ func syscallMode(i FileMode) (o uint32) {
 }
 
 // OpenFile is the generalized open call; most users will use Open
-// or Create instead.  It opens the named file with specified flag
-// (O_RDONLY etc.) and perm, (0666 etc.) if applicable.  If successful,
+// or Create instead. It opens the named file with specified flag
+// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
 // methods on the returned File can be used for I/O.
 // If there is an error, it will be of type *PathError.
 func OpenFile(name string, flag int, perm FileMode) (*File, error) {
@@ -123,7 +124,7 @@ func OpenFile(name string, flag int, perm FileMode) (*File, error) {
 	}
 
 	if append {
-		if _, e = syscall.Seek(fd, 0, SEEK_END); e != nil {
+		if _, e = syscall.Seek(fd, 0, io.SeekEnd); e != nil {
 			return nil, &PathError{"seek", name, e}
 		}
 	}
@@ -134,23 +135,21 @@ func OpenFile(name string, flag int, perm FileMode) (*File, error) {
 // Close closes the File, rendering it unusable for I/O.
 // It returns an error, if any.
 func (f *File) Close() error {
-	if f == nil {
-		return ErrInvalid
+	if err := f.checkValid("close"); err != nil {
+		return err
 	}
 	return f.file.close()
 }
 
 func (file *file) close() error {
-	if file == nil || file.fd < 0 {
+	if file == nil || file.fd == badFd {
 		return ErrInvalid
 	}
 	var err error
-	syscall.ForkLock.RLock()
 	if e := syscall.Close(file.fd); e != nil {
 		err = &PathError{"close", file.name, e}
 	}
-	syscall.ForkLock.RUnlock()
-	file.fd = -1 // so it can't be closed again
+	file.fd = badFd // so it can't be closed again
 
 	// no need for a finalizer anymore
 	runtime.SetFinalizer(file, nil)
@@ -419,12 +418,9 @@ func Chtimes(name string, atime time.Time, mtime time.Time) error {
 func Pipe() (r *File, w *File, err error) {
 	var p [2]int
 
-	syscall.ForkLock.RLock()
 	if e := syscall.Pipe(p[0:]); e != nil {
-		syscall.ForkLock.RUnlock()
 		return nil, nil, NewSyscallError("pipe", e)
 	}
-	syscall.ForkLock.RUnlock()
 
 	return NewFile(uintptr(p[0]), "|0"), NewFile(uintptr(p[1]), "|1"), nil
 }