mirror of
https://github.com/octoleo/restic.git
synced 2024-10-31 19:02:32 +00:00
68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package restic
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"syscall"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"github.com/juju/errors"
|
|
)
|
|
|
|
func (node *Node) OpenForReading() (*os.File, error) {
|
|
file, err := os.OpenFile(node.path, os.O_RDONLY|syscall.O_NOATIME, 0)
|
|
if os.IsPermission(err) {
|
|
return os.OpenFile(node.path, os.O_RDONLY, 0)
|
|
}
|
|
return file, err
|
|
}
|
|
|
|
func (node *Node) fillTimes(stat *syscall.Stat_t) {
|
|
node.ChangeTime = time.Unix(stat.Ctim.Unix())
|
|
node.AccessTime = time.Unix(stat.Atim.Unix())
|
|
}
|
|
|
|
func changeTime(stat *syscall.Stat_t) time.Time {
|
|
return time.Unix(stat.Ctim.Unix())
|
|
}
|
|
|
|
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
|
|
dir, err := os.Open(filepath.Dir(path))
|
|
defer dir.Close()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = utimesNanoAt(int(dir.Fd()), filepath.Base(path), utimes, AT_SYMLINK_NOFOLLOW)
|
|
|
|
if err != nil {
|
|
return errors.Annotate(err, "UtimesNanoAt")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// very lowlevel below
|
|
|
|
const AT_SYMLINK_NOFOLLOW = 0x100
|
|
|
|
func utimensat(dirfd int, path string, times *[2]syscall.Timespec, flags int) (err error) {
|
|
var _p0 *byte
|
|
_p0, err = syscall.BytePtrFromString(path)
|
|
if err != nil {
|
|
return
|
|
}
|
|
_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
|
|
if e1 != 0 {
|
|
err = e1
|
|
}
|
|
return
|
|
}
|
|
|
|
//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
|
|
|
|
func utimesNanoAt(dirfd int, path string, ts [2]syscall.Timespec, flags int) (err error) {
|
|
return utimensat(dirfd, path, (*[2]syscall.Timespec)(unsafe.Pointer(&ts[0])), flags)
|
|
}
|