restic/internal/backend/local/local_unix.go

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2022-03-28 20:23:47 +00:00
//go:build !windows
// +build !windows
package local
import (
"errors"
"os"
"runtime"
"syscall"
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"github.com/restic/restic/internal/fs"
)
// fsyncDir flushes changes to the directory dir.
func fsyncDir(dir string) error {
d, err := os.Open(dir)
if err != nil {
return err
}
err = d.Sync()
if err != nil &&
(errors.Is(err, syscall.ENOTSUP) || errors.Is(err, syscall.ENOENT) ||
errors.Is(err, syscall.EINVAL) || isMacENOTTY(err)) {
err = nil
}
cerr := d.Close()
if err == nil {
err = cerr
}
return err
}
// The ExFAT driver on some versions of macOS can return ENOTTY,
// "inappropriate ioctl for device", for fsync.
//
// https://github.com/restic/restic/issues/4016
// https://github.com/realm/realm-core/issues/5789
func isMacENOTTY(err error) bool {
return runtime.GOOS == "darwin" && errors.Is(err, syscall.ENOTTY)
}
// set file to readonly
func setFileReadonly(f string, mode os.FileMode) error {
return fs.Chmod(f, mode&^0222)
}