1struct ipc_perm {
2	key_t __ipc_perm_key;
3	uid_t uid;
4	gid_t gid;
5	uid_t cuid;
6	gid_t cgid;
7	mode_t mode;
8	int __ipc_perm_seq;
9	int __pad1;
10	long long __pad2;
11	long long __pad3;
12};
13
14#define IPC_64 0x100
15
16