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package graphdriver
import (
"golang.org/x/sys/unix"
"github.com/containers/storage/pkg/mount"
)
const (
// FsMagicZfs filesystem id for Zfs
FsMagicZfs = FsMagic(0x2fc12fc1)
)
var (
// Slice of drivers that should be used in an order
Priority = []string{
"zfs",
"vfs",
}
// FsNames maps filesystem id to name of the filesystem.
FsNames = map[FsMagic]string{
FsMagicZfs: "zfs",
}
)
// NewDefaultChecker returns a check that parses /proc/mountinfo to check
// if the specified path is mounted.
// No-op on FreeBSD.
func NewDefaultChecker() Checker {
return &defaultChecker{}
}
type defaultChecker struct{}
func (c *defaultChecker) IsMounted(path string) bool {
m, _ := mount.Mounted(path)
return m
}
// Mounted checks if the given path is mounted as the fs type
func Mounted(fsType FsMagic, mountPath string) (bool, error) {
var buf unix.Statfs_t
if err := unix.Statfs(mountPath, &buf); err != nil {
return false, err
}
return FsMagic(buf.Type) == fsType, nil
}
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