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cmd/go: always copy files on Windows

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Copying ensures that we respect the NTFS permissions of the parent folder.
I don't know if there is a way to tell when it is safe to simply rename.

Fixes #22343

Change-Id: I424bfe655b53b0e0fe425ce92bbc15450d52d851
Reviewed-on: https://go-review.googlesource.com/72910
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
Ian Lance Taylor 2017-10-24 07:22:26 -07:00
parent 262141a12a
commit da360f30e9
1 changed files with 9 additions and 0 deletions
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9
src/cmd/go/internal/work/exec.go
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@ -18,6 +18,7 @@ import (
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"sync"
@ -1065,6 +1066,14 @@ func (b *Builder) moveOrCopyFile(a *Action, dst, src string, perm os.FileMode, f
return b.copyFile(a, dst, src, perm, force)
}
// On Windows, always copy the file, so that we respect the NTFS
// permissions of the parent folder. https://golang.org/issue/22343.
// What matters here is not cfg.Goos (the system we are building
// for) but runtime.GOOS (the system we are building on).
if runtime.GOOS == "windows" {
return b.copyFile(a, dst, src, perm, force)
}
// If the destination directory has the group sticky bit set,
// we have to copy the file to retain the correct permissions.
// https://golang.org/issue/18878