1// Copyright (c) 2017, Andrey Nering <andrey.nering@gmail.com>
 2// See LICENSE for licensing information
 3
 4//go:build !unix
 5
 6package interp
 7
 8import (
 9	"context"
10	"fmt"
11
12	"mvdan.cc/sh/v3/syntax"
13)
14
15func mkfifo(path string, mode uint32) error {
16	return fmt.Errorf("unsupported")
17}
18
19// access attempts to emulate [unix.Access] on Windows.
20// Windows seems to have a different system of permissions than Unix,
21// so for now just rely on what [io/fs.FileInfo] gives us.
22func (r *Runner) access(ctx context.Context, path string, mode uint32) error {
23	info, err := r.lstat(ctx, path)
24	if err != nil {
25		return err
26	}
27	m := info.Mode()
28	switch mode {
29	case access_R_OK:
30		if m&0o400 == 0 {
31			return fmt.Errorf("file is not readable")
32		}
33	case access_W_OK:
34		if m&0o200 == 0 {
35			return fmt.Errorf("file is not writable")
36		}
37	case access_X_OK:
38		if m&0o100 == 0 {
39			return fmt.Errorf("file is not executable")
40		}
41	}
42	return nil
43}
44
45// unTestOwnOrGrp panics. Under Unix, it implements the -O and -G unary tests,
46// but under Windows, it's unclear how to implement those tests, since Windows
47// doesn't have the concept of a file owner, just ACLs, and it's unclear how
48// to map the one to the other.
49func (r *Runner) unTestOwnOrGrp(ctx context.Context, op syntax.UnTestOperator, x string) bool {
50	panic(fmt.Sprintf("unhandled unary test op: %v", op))
51}
52
53// waitStatus is a no-op on plan9 and windows.
54type waitStatus struct{}
55
56func (waitStatus) Signaled() bool { return false }
57func (waitStatus) Signal() int    { return 0 }