package security

// Permission is a named bit position (0–62) representing a single capability.
//
// Applications define their own permission constants using this type:
//
//	const (
//	    Read   security.Permission = 0
//	    Write  security.Permission = 1
//	    Delete security.Permission = 2
//	)
//
// Valid positions are 0 through MaxPermission (62). Values outside that range
// are silently ignored by PermissionMask.Has and PermissionMask.Grant.
type Permission int64

// MaxPermission is the highest valid bit position for a Permission constant.
// Bit 63 is reserved for the sign bit of the underlying int64.
const MaxPermission Permission = 62