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#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
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