blob: 0aa0e0ebb3a9e8411509915cf7af48a541c89394 [file] [log] [blame]
/* $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/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 <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;
error = do_pipe(fd);
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;
if (!(flags & MAP_ANONYMOUS)) {
file = fget(fd);
if (!file)
goto out;
error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
if (file)
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);
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);
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);
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);
return -ENOSYS;