#include <errno.h> #include <sys/msg.h> #include "ipc.h" #ifdef __UCLIBC_HAS_THREADS_NATIVE__ #include "sysdep-cancel.h" #else #define SINGLE_THREAD_P 1 #endif #ifdef L_msgctl #ifdef __NR_msgctl #define __NR___libc_msgctl __NR_msgctl static __inline__ _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, 0); #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, 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 #define __NR___syscall_msgrcv __NR_msgrcv static inline _syscall5(ssize_t, __syscall_msgrcv, int, msqid, void *, msgp, size_t, msgsz, long int, msgtyp, int, msgflg) #endif static inline ssize_t do_msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp, int msgflg) { #ifdef __NR_msgrcv return __syscall_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); #else struct new_msg_buf temp; temp.r_msgtyp = msgtyp; temp.oldmsg = msgp; return __syscall_ipc(IPCOP_msgrcv ,msqid ,msgsz ,msgflg ,&temp, 0); #endif } ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp, int msgflg) { if (SINGLE_THREAD_P) return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); #ifdef __UCLIBC_HAS_THREADS_NATIVE__ int oldtype = LIBC_CANCEL_ASYNC (); int result = do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); LIBC_CANCEL_RESET (oldtype); return result; #endif } #endif #ifdef L_msgsnd #ifdef __NR_msgsnd #define __NR___syscall_msgsnd __NR_msgsnd static inline _syscall4(int, __syscall_msgsnd, int, msqid, const void *, msgp, size_t, msgsz, int, msgflg) #endif /* Send message to message queue. */ static inline int do_msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg) { #ifdef __NR_msgsnd return __syscall_msgsnd(msqid, msgp, msgsz, msgflg); #else return __syscall_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp, 0); #endif } int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg) { if (SINGLE_THREAD_P) return do_msgsnd(msqid, msgp, msgsz, msgflg); #ifdef __UCLIBC_HAS_THREADS_NATIVE__ int oldtype = LIBC_CANCEL_ASYNC (); int result = do_msgsnd(msqid, msgp, msgsz, msgflg); LIBC_CANCEL_RESET (oldtype); return result; #endif } #endif