#include <errno.h> #include <sys/msg.h> #include "ipc.h" #ifdef L_msgctl #ifdef __NR_msgctl #define __NR___libc_msgctl __NR_msgctl _syscall3(int, __libc_msgctl, int, msqid, int, cmd, struct msqid_ds *, buf); #endif /* Message queue control operation. */ int msgctl(int msqid, int cmd, struct msqid_ds *buf) { #ifdef __NR_msgctl return __libc_msgctl(msqid, cmd | __IPC_64, buf); #else return __syscall_ipc(IPCOP_msgctl, msqid, cmd | __IPC_64, 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 __syscall_ipc(IPCOP_msgget ,key ,msgflg ,0 ,0); } #endif #endif struct new_msg_buf{ struct msgbuf * oldmsg; long int r_msgtyp; /* the fifth arg of __syscall_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 __syscall_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 __syscall_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp); } #endif #endif