os, syscall: more mingw
R=rsc, rsc1
CC=golang-dev
https://golang.org/cl/878046
diff --git a/src/pkg/os/file_mingw.go b/src/pkg/os/file_mingw.go
index 41bbe1e..4f7acbb 100644
--- a/src/pkg/os/file_mingw.go
+++ b/src/pkg/os/file_mingw.go
@@ -85,6 +85,27 @@
return err
}
+func (file *File) statFile(name string) (fi *FileInfo, err Error) {
+ var stat syscall.ByHandleFileInformation
+ if ok, e := syscall.GetFileInformationByHandle(int32(file.fd), &stat); !ok {
+ return nil, &PathError{"stat", file.name, Errno(e)}
+ }
+ return fileInfoFromByHandleInfo(new(FileInfo), file.name, &stat), nil
+}
+
+// Stat returns the FileInfo structure describing file.
+// It returns the FileInfo and an error, if any.
+func (file *File) Stat() (fi *FileInfo, err Error) {
+ if file == nil || file.fd < 0 {
+ return nil, EINVAL
+ }
+ if file.isdir() {
+ // I don't know any better way to do that for directory
+ return Stat(file.name)
+ }
+ return file.statFile(file.name)
+}
+
// Readdir reads the contents of the directory associated with file and
// returns an array of up to count FileInfo structures, as would be returned
// by Stat, in directory order. Subsequent calls on the same file will yield
@@ -112,7 +133,7 @@
}
}
var f FileInfo
- fileInfoFromStat("", &f, &di.stat, &di.stat)
+ fileInfoFromWin32finddata(&f, &di.stat.Windata)
if f.Name == "." || f.Name == ".." { // Useless names
continue
}
@@ -129,3 +150,18 @@
}
return fi, nil
}
+
+// Truncate changes the size of the named file.
+// If the file is a symbolic link, it changes the size of the link's target.
+func Truncate(name string, size int64) Error {
+ f, e := Open(name, O_WRONLY|O_CREAT, 0666)
+ if e != nil {
+ return e
+ }
+ defer f.Close()
+ e1 := f.Truncate(size)
+ if e1 != nil {
+ return e1
+ }
+ return nil
+}
