7bd051eeec
It looks like this function was converting the time (`windows.NsecToTimespec()`),
only to convert it back (`windows.TimespecToNsec()`). This became clear when
moving the lines together:
```go
ctimespec := windows.NsecToTimespec(ctime.UnixNano())
c := windows.NsecToFiletime(windows.TimespecToNsec(ctimespec))
```
And looking at the Golang code, it looks like they're indeed the exact reverse:
```go
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
func NsecToTimespec(nsec int64) (ts Timespec) {
ts.Sec = nsec / 1e9
ts.Nsec = nsec % 1e9
return
}
```
While modifying this code, also renaming the `e` variable to a more common `err`.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
25 lines
701 B
Go
25 lines
701 B
Go
package system // import "github.com/docker/docker/pkg/system"
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import (
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"time"
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"golang.org/x/sys/windows"
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)
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// setCTime will set the create time on a file. On Windows, this requires
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// calling SetFileTime and explicitly including the create time.
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func setCTime(path string, ctime time.Time) error {
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pathp, err := windows.UTF16PtrFromString(path)
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if err != nil {
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return err
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}
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h, err := windows.CreateFile(pathp,
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windows.FILE_WRITE_ATTRIBUTES, windows.FILE_SHARE_WRITE, nil,
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windows.OPEN_EXISTING, windows.FILE_FLAG_BACKUP_SEMANTICS, 0)
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if err != nil {
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return err
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}
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defer windows.Close(h)
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c := windows.NsecToFiletime(ctime.UnixNano())
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return windows.SetFileTime(h, &c, nil, nil)
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}
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