#define CLONE_VM      0x00000100
#define CLONE_FS      0x00000200
#define CLONE_FILES   0x00000400
#define CLONE_SIGHAND 0x00000800
#define CLONE_PTRACE  0x00002000
#define CLONE_VFORK   0x00004000
#define CLONE_PARENT  0x00008000
#define CLONE_THREAD  0x00010000
#define CLONE_NEWNS   0x00020000
#define CLONE_SYSVSEM 0x00040000
#define CLONE_SETTLS  0x00080000
#define CLONE_PARENT_SETTID 0x00100000
#define CLONE_CHILD_CLEARTID 0x00200000
#define CLONE_DETACHED 0x00400000
#define CLONE_UNTRACED 0x00800000
#define CLONE_CHILD_SETTID 0x01000000
#define CLONE_NEWUTS	0x04000000
#define CLONE_NEWIPC	0x08000000
#define CLONE_NEWUSER	0x10000000
#define CLONE_NEWPID	0x20000000
#define CLONE_NEWNET	0x40000000
#define CLONE_IO	0x80000000