Add generic sys_ipc wrapper

[safe/jmp/linux-2.6] / arch / cris / kernel / sys_cris.c

diff --git a/arch/cris/kernel/sys_cris.c b/arch/cris/kernel/sys_cris.c
index 0aa0e0e..7aa036e 100644 (file)
--- a/arch/cris/kernel/sys_cris.c
+++ b/arch/cris/kernel/sys_cris.c
@@ -13,162 +13,23 @@
 #include <linux/sched.h>
 #include <linux/syscalls.h>
 #include <linux/mm.h>
+#include <linux/fs.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/sem.h>
 #include <linux/msg.h>
 #include <linux/shm.h>
 #include <linux/stat.h>
 #include <linux/mman.h>
 #include <linux/file.h>
+#include <linux/ipc.h>
 
 #include <asm/uaccess.h>
-#include <asm/ipc.h>
 #include <asm/segment.h>
 
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long __user * fildes)
-{
-        int fd[2];
-        int error;
-
-        lock_kernel();
-        error = do_pipe(fd);
-        unlock_kernel();
-        if (!error) {
-                if (copy_to_user(fildes, fd, 2*sizeof(int)))
-                        error = -EFAULT;
-        }
-        return error;
-}
-
-/* common code for old and new mmaps */
-static inline long
-do_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
-        unsigned long flags, unsigned long fd, unsigned long pgoff)
-{
-        int error = -EBADF;
-        struct file * file = NULL;
-
-        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-        if (!(flags & MAP_ANONYMOUS)) {
-                file = fget(fd);
-                if (!file)
-                        goto out;
-        }
-
-        down_write(&current->mm->mmap_sem);
-        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-        up_write(&current->mm->mmap_sem);
-
-        if (file)
-                fput(file);
-out:
-        return error;
-}
-
-asmlinkage unsigned long old_mmap(unsigned long __user *args)
-{        
-       unsigned long buffer[6];
-       int err = -EFAULT;
-
-       if (copy_from_user(&buffer, args, sizeof(buffer)))
-               goto out;
-
-       err = -EINVAL;
-       if (buffer[5] & ~PAGE_MASK) /* verify that offset is on page boundary */
-               goto out;
-
-       err = do_mmap2(buffer[0], buffer[1], buffer[2], buffer[3],
-                       buffer[4], buffer[5] >> PAGE_SHIFT);
-out:
-       return err;
-}
-
 asmlinkage long
 sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
           unsigned long flags, unsigned long fd, unsigned long pgoff)
 {
-        return do_mmap2(addr, len, prot, flags, fd, pgoff);
-}
-
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly. (same as arch/i386)
- */
-
-asmlinkage int sys_ipc (uint call, int first, int second,
-                       int third, void __user *ptr, long fifth)
-{
-       int version, ret;
-
-       version = call >> 16; /* hack for backward compatibility */
-       call &= 0xffff;
-
-       switch (call) {
-       case SEMOP:
-               return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
-       case SEMTIMEDOP:
-               return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
-                                       (const struct timespec __user *)fifth);
-
-       case SEMGET:
-               return sys_semget (first, second, third);
-       case SEMCTL: {
-               union semun fourth;
-               if (!ptr)
-                       return -EINVAL;
-               if (get_user(fourth.__pad, (void * __user *) ptr))
-                       return -EFAULT;
-               return sys_semctl (first, second, third, fourth);
-       }
-
-       case MSGSND:
-               return sys_msgsnd (first, (struct msgbuf __user *) ptr, 
-                                  second, third);
-       case MSGRCV:
-               switch (version) {
-               case 0: {
-                       struct ipc_kludge tmp;
-                       if (!ptr)
-                               return -EINVAL;
-                       
-                       if (copy_from_user(&tmp,
-                                          (struct ipc_kludge __user *) ptr, 
-                                          sizeof (tmp)))
-                               return -EFAULT;
-                       return sys_msgrcv (first, tmp.msgp, second,
-                                          tmp.msgtyp, third);
-               }
-               default:
-                       return sys_msgrcv (first,
-                                          (struct msgbuf __user *) ptr,
-                                          second, fifth, third);
-               }
-       case MSGGET:
-               return sys_msgget ((key_t) first, second);
-       case MSGCTL:
-               return sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
-
-       case SHMAT: {
-                ulong raddr;
-                ret = do_shmat (first, (char __user *) ptr, second, &raddr);
-                if (ret)
-                        return ret;
-                return put_user (raddr, (ulong __user *) third);
-        }
-       case SHMDT: 
-               return sys_shmdt ((char __user *)ptr);
-       case SHMGET:
-               return sys_shmget (first, second, third);
-       case SHMCTL:
-               return sys_shmctl (first, second,
-                                  (struct shmid_ds __user *) ptr);
-       default:
-               return -ENOSYS;
-       }
+       /* bug(?): 8Kb pages here */
+        return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
 }