#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/msg.h>
#include<stdio.h>

main(int argc, char *argv[])
{
	int qid;
	struct msqid_ds qstatus;
	qid=msgget((key_t)atoi(argv[1]),IPC_CREAT);
	if(qid==-1){
		perror("msgget failed");
		exit(1);
	}
	if(msgctl(qid,IPC_STAT,&qstatus)<0){
		perror("msgctl failed");
		exit(1);
	}
	printf("Real user id of the queue creator: %d\n",qstatus.msg_perm.cuid);
	printf("Real group id of the queue creator: %d\n",qstatus.msg_perm.cgid);
	
	printf("Effective user id of the queue creator: %d\n",qstatus.msg_perm.uid);
	printf("Effective group id of the queue creator: %d\n",qstatus.msg_perm.gid);
	printf("Permissions: %d\n",qstatus.msg_perm.mode);
	printf("Message queue id: %d\n",qid);
	printf("%d message(s) on queue\n",qstatus.msg_qnum);
	printf("Last message sent by process :%3d at %s \n",qstatus.msg_lspid,ctime(& (qstatus.msg_stime)));
	
	printf("Last message received by process :%3d at %s \n",qstatus.msg_lrpid,ctime(& (qstatus.msg_rtime)));
	printf("Current number of bytes on queue %d\n",qstatus.msg_cbytes);
	printf("Maximum number of bytes allowed on the queue%d\n",qstatus.msg_qbytes);
}