#include "unpipc.h" int main(int argc, char **argv) { int msqid; struct msqid_ds info; struct msgbuf buf; msqid = Msgget(IPC_PRIVATE, SVMSG_MODE | IPC_CREAT); buf.mtype = 1; buf.mtext[0] = 1; Msgsnd(msqid, &buf, 1, 0); Msgctl(msqid, IPC_STAT, &info); printf("read-write: %03o, cbytes = %lu, qnum = %lu, qbytes = %lu\n", info.msg_perm.mode & 0777, (ulong_t) info.msg_cbytes, (ulong_t) info.msg_qnum, (ulong_t) info.msg_qbytes); system("ipcs -q"); Msgctl(msqid, IPC_RMID, NULL); exit(0); }