Windows: Archive package changes for Windows daemon

Signed-off-by: John Howard <jhoward@microsoft.com>

system/lstat_windows.go

@@ -2,7 +2,28 @@
 
 package system
 
+import (
+	"os"
+)
+
+// Some explanation for my own sanity, and hopefully maintainers in the
+// future.
+//
+// Lstat calls os.Lstat to get a fileinfo interface back.
+// This is then copied into our own locally defined structure.
+// Note the Linux version uses fromStatT to do the copy back,
+// but that not strictly necessary when already in an OS specific module.
+
 func Lstat(path string) (*Stat_t, error) {
-	// should not be called on cli code path
-	return nil, ErrNotSupportedPlatform
+	fi, err := os.Lstat(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Stat_t{
+		name:    fi.Name(),
+		size:    fi.Size(),
+		mode:    fi.Mode(),
+		modTime: fi.ModTime(),
+		isDir:   fi.IsDir()}, nil
 }

system/mknod_windows.go

@@ -3,10 +3,9 @@
 package system
 
 func Mknod(path string, mode uint32, dev int) error {
-	// should not be called on cli code path
 	return ErrNotSupportedPlatform
 }
 
 func Mkdev(major int64, minor int64) uint32 {
-	panic("Mkdev not implemented on windows, should not be called on cli code")
+	panic("Mkdev not implemented on Windows.")
 }

system/stat.go

@@ -1,3 +1,5 @@
+// +build !windows
+
 package system
 
 import (

system/stat_windows.go

@@ -3,15 +3,34 @@
 package system
 
 import (
-	"errors"
-	"syscall"
+	"os"
+	"time"
 )
 
-func fromStatT(s *syscall.Win32FileAttributeData) (*Stat_t, error) {
-	return nil, errors.New("fromStatT should not be called on windows path")
+type Stat_t struct {
+	name    string
+	size    int64
+	mode    os.FileMode
+	modTime time.Time
+	isDir   bool
 }
 
-func Stat(path string) (*Stat_t, error) {
-	// should not be called on cli code path
-	return nil, ErrNotSupportedPlatform
+func (s Stat_t) Name() string {
+	return s.name
+}
+
+func (s Stat_t) Size() int64 {
+	return s.size
+}
+
+func (s Stat_t) Mode() os.FileMode {
+	return s.mode
+}
+
+func (s Stat_t) ModTime() time.Time {
+	return s.modTime
+}
+
+func (s Stat_t) IsDir() bool {
+	return s.isDir
 }