mirror of
https://github.com/rwinkhart/go-winio.git
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Amit
fd34511314
Some new upcoming changes require us to use Go 1.23. However, if we switch to Go 1.23 some new linter errors are showing up. This commit fixes most of the errors and adds an exclusion for integer overflow errors. Signed-off-by: Amit <ambarve@microsoft.com>
106 lines
3.5 KiB
Go
106 lines
3.5 KiB
Go
//go: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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// alignedFileBasicInfo is a FileBasicInfo, but aligned to uint64 by containing
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// uint64 rather than windows.Filetime. Filetime contains two uint32s. uint64
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// alignment is necessary to pass this as FILE_BASIC_INFO.
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type alignedFileBasicInfo struct {
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CreationTime, LastAccessTime, LastWriteTime, ChangeTime uint64
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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 := &alignedFileBasicInfo{}
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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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// Reinterpret the alignedFileBasicInfo as a FileBasicInfo so it matches the
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// public API of this module. The data may be unnecessarily aligned.
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return (*FileBasicInfo)(unsafe.Pointer(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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// Create an alignedFileBasicInfo based on a FileBasicInfo. The copy is
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// suitable to pass to GetFileInformationByHandleEx.
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biAligned := *(*alignedFileBasicInfo)(unsafe.Pointer(bi))
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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(&biAligned)),
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uint32(unsafe.Sizeof(biAligned)),
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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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