include/tse_ipcmsg.h

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) International Business Machines  Corp., 2001
 * Copyright (c) Linux Test Project, 2026
 */

/*
 * tse_ipcmsg.h - common definitions for the IPC message tests.
 */

#ifndef TSE_IPCMSG_H__
#define TSE_IPCMSG_H__	1

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

#include "test.h"

void cleanup(void);
void setup(void);

#define MSG_RD  0400            /* read permission for the queue */
#define MSG_WR  0200            /* write permission for the queue */
#define MSG_RW	MSG_RD | MSG_WR

#define MSGSIZE	1024		/* a resonable size for a message */
#define MSGTYPE 1		/* a type ID for a message */

#define NR_MSGQUEUES	16	/* MSGMNI as defined in linux/msg.h */

typedef struct mbuf {		/* a generic message structure */
	long mtype;
	char mtext[MSGSIZE + 1];  /* add 1 here so the message can be 1024   */
} MSGBUF;			  /* characters long with a '\0' termination */

#ifdef LIBIPC
key_t msgkey;                   /* the ftok() generated message key */
#else
extern key_t msgkey;                   /* the ftok() generated message key */
#endif

void init_buf(MSGBUF *, int, int);
void rm_queue(int);

key_t getipckey();
int getuserid(char *);

int get_max_msgqueues(void);
int get_used_msgqueues(void);

#endif /* tse_ipcmsg.h */