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70 lines
2.6 KiB
70 lines
2.6 KiB
//go:build windows
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/*
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Copyright (c) for portions of rename_windows.go are held by The Go Authors, 2016 and are provided under
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the BSD license.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package fs
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import (
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"os"
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"syscall"
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"github.com/pkg/errors"
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)
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// renameFallback attempts to determine the appropriate fallback to failed rename
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// operation depending on the resulting error.
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func renameFallback(err error, src, dst string) error {
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// Rename may fail if src and dst are on different devices; fall back to
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// copy if we detect that case. syscall.EXDEV is the common name for the
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// cross device link error which has varying output text across different
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// operating systems.
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terr, ok := err.(*os.LinkError)
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if !ok {
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return err
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}
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if terr.Err != syscall.EXDEV {
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// In windows it can drop down to an operating system call that
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// returns an operating system error with a different number and
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// message. Checking for that as a fall back.
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noerr, ok := terr.Err.(syscall.Errno)
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// 0x11 (ERROR_NOT_SAME_DEVICE) is the windows error.
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// See https://msdn.microsoft.com/en-us/library/cc231199.aspx
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if ok && noerr != 0x11 {
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return errors.Wrapf(terr, "link error: cannot rename %s to %s", src, dst)
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}
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}
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return renameByCopy(src, dst)
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}
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