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 unsigned long __unused1;
11 unsigned long __unused2;
12};