acb2964d65
Some minor improvements, but biggest for here is ErrPipeListenerClosed is no longer an errors.New where the string matches the text of the now exported net.ErrClosed in the stdlib, but is just assigned to net.ErrClosed directly. This should allow us to get rid of the string check for "use of closed network connection" here now.. Signed-off-by: Daniel Canter <dcanter@microsoft.com>
93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
//go:build windows
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// +build windows
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package winio
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import (
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"os"
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"runtime"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// FileBasicInfo contains file access time and file attributes information.
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type FileBasicInfo struct {
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CreationTime, LastAccessTime, LastWriteTime, ChangeTime windows.Filetime
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FileAttributes uint32
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_ uint32 // padding
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}
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// GetFileBasicInfo retrieves times and attributes for a file.
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func GetFileBasicInfo(f *os.File) (*FileBasicInfo, error) {
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bi := &FileBasicInfo{}
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if err := windows.GetFileInformationByHandleEx(
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windows.Handle(f.Fd()),
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windows.FileBasicInfo,
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(*byte)(unsafe.Pointer(bi)),
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uint32(unsafe.Sizeof(*bi)),
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); err != nil {
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return nil, &os.PathError{Op: "GetFileInformationByHandleEx", Path: f.Name(), Err: err}
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}
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runtime.KeepAlive(f)
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return bi, nil
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}
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// SetFileBasicInfo sets times and attributes for a file.
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func SetFileBasicInfo(f *os.File, bi *FileBasicInfo) error {
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if err := windows.SetFileInformationByHandle(
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windows.Handle(f.Fd()),
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windows.FileBasicInfo,
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(*byte)(unsafe.Pointer(bi)),
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uint32(unsafe.Sizeof(*bi)),
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); err != nil {
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return &os.PathError{Op: "SetFileInformationByHandle", Path: f.Name(), Err: err}
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}
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runtime.KeepAlive(f)
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return nil
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}
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// FileStandardInfo contains extended information for the file.
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// FILE_STANDARD_INFO in WinBase.h
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// https://docs.microsoft.com/en-us/windows/win32/api/winbase/ns-winbase-file_standard_info
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type FileStandardInfo struct {
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AllocationSize, EndOfFile int64
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NumberOfLinks uint32
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DeletePending, Directory bool
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}
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// GetFileStandardInfo retrieves ended information for the file.
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func GetFileStandardInfo(f *os.File) (*FileStandardInfo, error) {
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si := &FileStandardInfo{}
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if err := windows.GetFileInformationByHandleEx(windows.Handle(f.Fd()),
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windows.FileStandardInfo,
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(*byte)(unsafe.Pointer(si)),
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uint32(unsafe.Sizeof(*si))); err != nil {
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return nil, &os.PathError{Op: "GetFileInformationByHandleEx", Path: f.Name(), Err: err}
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}
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runtime.KeepAlive(f)
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return si, nil
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}
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// FileIDInfo contains the volume serial number and file ID for a file. This pair should be
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// unique on a system.
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type FileIDInfo struct {
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VolumeSerialNumber uint64
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FileID [16]byte
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}
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// GetFileID retrieves the unique (volume, file ID) pair for a file.
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func GetFileID(f *os.File) (*FileIDInfo, error) {
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fileID := &FileIDInfo{}
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if err := windows.GetFileInformationByHandleEx(
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windows.Handle(f.Fd()),
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windows.FileIdInfo,
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(*byte)(unsafe.Pointer(fileID)),
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uint32(unsafe.Sizeof(*fileID)),
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); err != nil {
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return nil, &os.PathError{Op: "GetFileInformationByHandleEx", Path: f.Name(), Err: err}
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}
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runtime.KeepAlive(f)
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return fileID, nil
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}
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