mirror of
https://github.com/octoleo/restic.git
synced 2024-11-01 03:12:31 +00:00
22 lines
514 B
Go
22 lines
514 B
Go
|
package fs
|
||
|
|
|
||
|
|
import (
|
||
|
|
"os"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
// SetFlags tries to set the O_NOATIME flag on f, which prevents the kernel
|
||
|
|
// from updating the atime on a read call.
|
||
|
|
//
|
||
|
|
// The call fails when we're not the owner of the file or root. The caller
|
||
|
|
// should ignore the error, which is returned for testing only.
|
||
|
|
func setFlags(f *os.File) error {
|
||
|
|
fd := f.Fd()
|
||
|
|
flags, err := unix.FcntlInt(fd, unix.F_GETFL, 0)
|
||
|
|
if err == nil {
|
||
|
|
_, err = unix.FcntlInt(fd, unix.F_SETFL, flags|unix.O_NOATIME)
|
||
|
|
}
|
||
|
|
return err
|
||
|
|
}
|