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54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
//go:build !windows
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// +build !windows
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package local
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import (
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"errors"
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"os"
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"runtime"
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"syscall"
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)
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// fsyncDir flushes changes to the directory dir.
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func fsyncDir(dir string) error {
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d, err := os.Open(dir)
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if err != nil {
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return err
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}
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err = d.Sync()
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if err != nil &&
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(errors.Is(err, syscall.ENOTSUP) || errors.Is(err, syscall.ENOENT) ||
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errors.Is(err, syscall.EINVAL) || isMacENOTTY(err)) {
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err = nil
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}
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cerr := d.Close()
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if err == nil {
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err = cerr
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}
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return err
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}
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// The ExFAT driver on some versions of macOS can return ENOTTY,
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// "inappropriate ioctl for device", for fsync.
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//
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// https://github.com/restic/restic/issues/4016
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// https://github.com/realm/realm-core/issues/5789
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func isMacENOTTY(err error) bool {
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return runtime.GOOS == "darwin" && errors.Is(err, syscall.ENOTTY)
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}
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// set file to readonly
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func setFileReadonly(f string, mode os.FileMode) error {
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err := os.Chmod(f, mode&^0222)
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// ignore the error if the FS does not support setting this mode (e.g. CIFS with gvfs on Linux)
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if err != nil && errors.Is(err, errors.ErrUnsupported) {
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return nil
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}
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return err
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}
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