const (
	Wildcard = -1
)

var (
	DefaultSimpleDevices = []*Device{

		{
			Path:              "/dev/null",
			Type:              'c',
			MajorNumber:       1,
			MinorNumber:       3,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},
		{
			Path:              "/dev/zero",
			Type:              'c',
			MajorNumber:       1,
			MinorNumber:       5,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},

		{
			Path:              "/dev/full",
			Type:              'c',
			MajorNumber:       1,
			MinorNumber:       7,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},

		{
			Path:              "/dev/tty",
			Type:              'c',
			MajorNumber:       5,
			MinorNumber:       0,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},

		{
			Path:              "/dev/urandom",
			Type:              'c',
			MajorNumber:       1,
			MinorNumber:       9,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},
		{
			Path:              "/dev/random",
			Type:              'c',
			MajorNumber:       1,
			MinorNumber:       8,
			CgroupPermissions: "rwm",
			FileMode:          0666,
		},
	}

	DefaultAllowedDevices = append([]*Device{

		{
			Type:              'c',
			MajorNumber:       Wildcard,
			MinorNumber:       Wildcard,
			CgroupPermissions: "m",
		},
		{
			Type:              'b',
			MajorNumber:       Wildcard,
			MinorNumber:       Wildcard,
			CgroupPermissions: "m",
		},

		{
			Path:              "/dev/console",
			Type:              'c',
			MajorNumber:       5,
			MinorNumber:       1,
			CgroupPermissions: "rwm",
		},
		{
			Path:              "/dev/tty0",
			Type:              'c',
			MajorNumber:       4,
			MinorNumber:       0,
			CgroupPermissions: "rwm",
		},
		{
			Path:              "/dev/tty1",
			Type:              'c',
			MajorNumber:       4,
			MinorNumber:       1,
			CgroupPermissions: "rwm",
		},

		{
			Path:              "",
			Type:              'c',
			MajorNumber:       136,
			MinorNumber:       Wildcard,
			CgroupPermissions: "rwm",
		},
		{
			Path:              "",
			Type:              'c',
			MajorNumber:       5,
			MinorNumber:       2,
			CgroupPermissions: "rwm",
		},

		{
			Path:              "",
			Type:              'c',
			MajorNumber:       10,
			MinorNumber:       200,
			CgroupPermissions: "rwm",
		},
	}, DefaultSimpleDevices...)

	DefaultAutoCreatedDevices = append([]*Device{
		{

			Path:              "/dev/fuse",
			Type:              'c',
			MajorNumber:       10,
			MinorNumber:       229,
			CgroupPermissions: "rwm",
		},
	}, DefaultSimpleDevices...)
)

var (
	ErrNotADeviceNode = errors.New("not a device node")
)

type Device struct {
	Type              rune        `json:"type,omitempty"`
	Path              string      `json:"path,omitempty"`               // It is fine if this is an empty string in the case that you are using Wildcards
	MajorNumber       int64       `json:"major_number,omitempty"`       // Use the wildcard constant for wildcards.
	MinorNumber       int64       `json:"minor_number,omitempty"`       // Use the wildcard constant for wildcards.
	CgroupPermissions string      `json:"cgroup_permissions,omitempty"` // Typically just "rwm"
	FileMode          os.FileMode `json:"file_mode,omitempty"`          // The permission bits of the file's mode
}