os,syscall: fix windows build

make syscall.ProcAttr.Files be []uintptr

all.bash passes on Linux.
things seem to compile on GOOS={darwin,windows}

R=golang-dev, mattn.jp, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/5653055

src/pkg/net/sendfile_windows.go

@@ -56,7 +56,7 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 	var o sendfileOp
 	o.Init(c, 'w')
 	o.n = uint32(n)
-	o.src = f.Fd()
+	o.src = syscall.Handle(f.Fd())
 	done, err := iosrv.ExecIO(&o, 0)
 	if err != nil {
 		return 0, err, false

src/pkg/os/exec/exec_test.go

@@ -17,7 +17,6 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
-	"syscall"
 	"testing"
 )
 
@@ -153,8 +152,8 @@ func TestExtraFiles(t *testing.T) {
 
 	// Ensure that file descriptors have not already been leaked into
 	// our environment.
-	for fd := int(os.Stderr.Fd()) + 1; fd <= 101; fd++ {
-		err := syscall.Close(fd)
+	for fd := os.Stderr.Fd() + 1; fd <= 101; fd++ {
+		err := os.NewFile(fd, "").Close()
 		if err == nil {
 			t.Logf("Something already leaked - closed fd %d", fd)
 		}

src/pkg/os/exec_posix.go

@@ -38,7 +38,7 @@ func StartProcess(name string, argv []string, attr *ProcAttr) (p *Process, err e
 		sysattr.Env = Environ()
 	}
 	for _, f := range attr.Files {
-		sysattr.Files = append(sysattr.Files, int(f.Fd()))
+		sysattr.Files = append(sysattr.Files, f.Fd())
 	}
 
 	pid, h, e := syscall.StartProcess(name, argv, sysattr)

src/pkg/os/file_windows.go

@@ -70,7 +70,7 @@ func openFile(name string, flag int, perm FileMode) (file *File, err error) {
 		syscall.CloseOnExec(r)
 	}
 
-	return NewFile(r, name), nil
+	return NewFile(uintptr(r), name), nil
 }
 
 func openDir(name string) (file *File, err error) {
@@ -79,7 +79,7 @@ func openDir(name string) (file *File, err error) {
 	if e != nil {
 		return nil, &PathError{"open", name, e}
 	}
-	f := NewFile(r, name)
+	f := NewFile(uintptr(r), name)
 	f.dirinfo = d
 	return f, nil
 }
@@ -313,7 +313,7 @@ func Pipe() (r *File, w *File, err error) {
 	syscall.CloseOnExec(p[1])
 	syscall.ForkLock.RUnlock()
 
-	return NewFile(p[0], "|0"), NewFile(p[1], "|1"), nil
+	return NewFile(uintptr(p[0]), "|0"), NewFile(uintptr(p[1]), "|1"), nil
 }
 
 // TempDir returns the default directory to use for temporary files.

src/pkg/syscall/exec_bsd.go

@@ -39,8 +39,10 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
 		i      int
 	)
 
-	// guard against side effects of shuffling fds below.
-	fd := append([]int(nil), attr.Files...)
+	fd := make([]int, len(attr.Files))
+	for i, ufd := range attr.Files {
+		fd[i] = int(ufd)
+	}
 
 	darwin := runtime.GOOS == "darwin"
 

src/pkg/syscall/exec_linux.go

@@ -40,7 +40,10 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
 	)
 
 	// guard against side effects of shuffling fds below.
-	fd := append([]int(nil), attr.Files...)
+	fd := make([]int, len(attr.Files))
+	for i, ufd := range attr.Files {
+		fd[i] = int(ufd)
+	}
 
 	// About to call fork.
 	// No more allocation or calls of non-assembly functions.

src/pkg/syscall/exec_unix.go

@@ -103,7 +103,7 @@ type Credential struct {
 type ProcAttr struct {
 	Dir   string    // Current working directory.
 	Env   []string  // Environment.
-	Files []int    // File descriptors.
+	Files []uintptr // File descriptors.
 	Sys   *SysProcAttr
 }
 

src/pkg/syscall/exec_windows.go

@@ -220,7 +220,7 @@ func joinExeDirAndFName(dir, p string) (name string, err error) {
 type ProcAttr struct {
 	Dir   string
 	Env   []string
-	Files []Handle
+	Files []uintptr
 	Sys   *SysProcAttr
 }