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- #include <errno.h>
- #include <sys/msg.h>
- #include "ipc.h"
- #ifdef L_msgctl
- #ifdef __NR_msgctl
- _syscall3(int, msgctl, int, msqid, int, cmd, struct msqid_ds *, buf);
- #else
- /* Message queue control operation. */
- int msgctl (int msqid, int cmd, struct msqid_ds *buf)
- {
- return __ipc(IPCOP_msgctl ,msqid ,cmd ,0 ,buf);
- }
- #endif
- #endif
- #ifdef L_msgget
- #ifdef __NR_msgget
- _syscall2(int, msgget, key_t, key, int, msgflg)
- #else
- /* Get messages queue. */
- int msgget (key_t key, int msgflg)
- {
- return __ipc(IPCOP_msgget ,key ,msgflg ,0 ,0);
- }
- #endif
- #endif
- struct new_msg_buf{
- struct msgbuf * oldmsg;
- long int r_msgtyp; /* the fifth arg of __ipc */
- };
- /* Receive message from message queue. */
- #ifdef L_msgrcv
- #ifdef __NR_msgrcv
- _syscall5(int, msgrcv, int, msqid, void *, msgp, size_t, msgsz, long int, msgtyp, int, msgflg);
- #else
- int msgrcv (int msqid, void *msgp, size_t msgsz,
- long int msgtyp, int msgflg)
- {
- struct new_msg_buf temp;
- temp.r_msgtyp = msgtyp;
- temp.oldmsg = msgp;
- return __ipc(IPCOP_msgrcv ,msqid ,msgsz ,msgflg ,&temp);
- }
- #endif
- #endif
- #ifdef L_msgsnd
- #ifdef __NR_msgsnd
- _syscall4(int, msgsnd, int, msqid, const void *, msgp, size_t, msgsz, int, msgflg);
- #else
- /* Send message to message queue. */
- int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
- {
- return __ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp);
- }
- #endif
- #endif
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