tailscale/atomicfile/mksyscall.go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause

package atomicfile

//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go

//sys replaceFileW(replaced *uint16, replacement *uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) [int32(failretval)==0] = kernel32.ReplaceFileW
atomicfile: use ReplaceFile on Windows so that attributes and ACLs are preserved I moved the actual rename into separate, GOOS-specific files. On non-Windows, we do a simple os.Rename. On Windows, we first try ReplaceFile with a fallback to os.Rename if the target file does not exist. ReplaceFile is the recommended way to rename the file in this use case, as it preserves attributes and ACLs set on the target file. Updates #14428 Signed-off-by: Aaron Klotz <aaron@tailscale.com> 2025-01-13 13:02:47 -07:00			`// Copyright (c) Tailscale Inc & AUTHORS`
			`// SPDX-License-Identifier: BSD-3-Clause`

			`package atomicfile`

			`//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go`

			`//sys replaceFileW(replaced uint16, replacement uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) [int32(failretval)==0] = kernel32.ReplaceFileW`