1// Copyright 2019 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build faketime
6
7package syscall
8
9import "unsafe"
10
11const faketime = true
12
13// When faketime is enabled, we redirect writes to FDs 1 and 2 through
14// the runtime's write function, since that adds the framing that
15// reports the emulated time.
16
17//go:linkname runtimeWrite runtime.write
18func runtimeWrite(fd uintptr, p unsafe.Pointer, n int32) int32
19
20func faketimeWrite(fd int, p []byte) int {
21	var pp *byte
22	if len(p) > 0 {
23		pp = &p[0]
24	}
25	return int(runtimeWrite(uintptr(fd), unsafe.Pointer(pp), int32(len(p))))
26}
27