ipc32.c

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#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/syscalls.h>
#include <linux/time.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/ipc.h>
#include <linux/compat.h>
#include <asm/sys_ia32.h>

asmlinkage long sys32_ipc(u32 call, int first, int second, int third,
              compat_uptr_t ptr, u32 fifth)
{
    int version;

    version = call >> 16; /* hack for backward compatibility */
    call &= 0xffff;

    switch (call) {
    case SEMOP:
        /* struct sembuf is the same on 32 and 64bit :)) */
        return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
    case SEMTIMEDOP:
        return compat_sys_semtimedop(first, compat_ptr(ptr), second,
                        compat_ptr(fifth));
    case SEMGET:
        return sys_semget(first, second, third);
    case SEMCTL:
        return compat_sys_semctl(first, second, third, compat_ptr(ptr));

    case MSGSND:
        return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
    case MSGRCV:
        return compat_sys_msgrcv(first, second, fifth, third,
                     version, compat_ptr(ptr));
    case MSGGET:
        return sys_msgget((key_t) first, second);
    case MSGCTL:
        return compat_sys_msgctl(first, second, compat_ptr(ptr));

    case SHMAT:
        return compat_sys_shmat(first, second, third, version,
                    compat_ptr(ptr));
    case SHMDT:
        return sys_shmdt(compat_ptr(ptr));
    case SHMGET:
        return sys_shmget(first, (unsigned)second, third);
    case SHMCTL:
        return compat_sys_shmctl(first, second, compat_ptr(ptr));
    }
    return -ENOSYS;
}