37 lines
689 B
Go
37 lines
689 B
Go
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package chroot
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"syscall"
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"time"
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)
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func diskPathForLun(lun int32) string {
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return fmt.Sprintf("/dev/disk/azure/scsi1/lun%d", lun)
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}
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func (da diskAttacher) WaitForDevice(ctx context.Context, lun int32) (device string, err error) {
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path := diskPathForLun(lun)
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for {
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link, err := os.Readlink(path)
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if err == nil {
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return filepath.Abs("/dev/disk/azure/scsi1/" + link)
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} else if err != os.ErrNotExist {
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if pe, ok := err.(*os.PathError); ok && pe.Err != syscall.ENOENT {
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return "", err
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}
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}
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select {
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case <-time.After(100 * time.Millisecond):
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// continue
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case <-ctx.Done():
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return "", ctx.Err()
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}
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}
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}
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