65d79e3e5e
Instead of implementing refcounts at each graphdriver, implement this in the layer package which is what the engine actually interacts with now. This means interacting directly with the graphdriver is no longer explicitly safe with regard to Get/Put calls being refcounted. In addition, with the containerd, layers may still be mounted after a daemon restart since we will no longer explicitly kill containers when we shutdown or startup engine. Because of this ref counts would need to be repopulated. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
19 lines
409 B
Go
19 lines
409 B
Go
package graphdriver
|
|
|
|
import "syscall"
|
|
|
|
var (
|
|
// Slice of drivers that should be used in an order
|
|
priority = []string{
|
|
"zfs",
|
|
}
|
|
)
|
|
|
|
// Mounted checks if the given path is mounted as the fs type
|
|
func Mounted(fsType FsMagic, mountPath string) (bool, error) {
|
|
var buf syscall.Statfs_t
|
|
if err := syscall.Statfs(mountPath, &buf); err != nil {
|
|
return false, err
|
|
}
|
|
return FsMagic(buf.Type) == fsType, nil
|
|
}
|