132 строки
3.3 KiB
C
132 строки
3.3 KiB
C
/* $Id: sys_cris.c,v 1.6 2004/03/11 11:38:40 starvik Exp $
|
|
*
|
|
* linux/arch/cris/kernel/sys_cris.c
|
|
*
|
|
* This file contains various random system calls that
|
|
* have a non-standard calling sequence on some platforms.
|
|
* Since we don't have to do any backwards compatibility, our
|
|
* versions are done in the most "normal" way possible.
|
|
*
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/smp.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/segment.h>
|
|
|
|
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 = sys_mmap_pgoff(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)
|
|
{
|
|
/* bug(?): 8Kb pages here */
|
|
return sys_mmap_pgoff(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;
|
|
}
|
|
}
|