- struct msqid_ds {
- struct ipc_perm msg_perm;
- time_t msg_stime;
- int __unused1;
- time_t msg_rtime;
- int __unused2;
- time_t msg_ctime;
- int __unused3;
- unsigned long msg_cbytes;
- msgqnum_t msg_qnum;
- msglen_t msg_qbytes;
- pid_t msg_lspid;
- pid_t msg_lrpid;
- unsigned long __unused[2];
- };
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