int sys32_put_timeval(struct compat_timeval __user *ctv,
const struct timeval *tv)
{
return (ctv == NULL ||
!access_wok(ctv, sizeof(*ctv)) ||
__xn_put_user(tv->tv_sec, &ctv->tv_sec) ||
__xn_put_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
}
int sys32_put_timespec(struct compat_timespec __user *cts,
const struct timespec *ts)
{
return (cts == NULL ||
!access_wok(cts, sizeof(*cts)) ||
__xn_put_user(ts->tv_sec, &cts->tv_sec) ||
__xn_put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
ssize_t sys32_put_fdset(compat_fd_set __user *cfds, const fd_set *fds,
size_t fdsize)
{
int rdpos, wrpos, wrlim = fdsize / sizeof(long);
if (cfds == NULL || !access_wok(cfds, wrlim * sizeof(compat_ulong_t)))
return -EFAULT;
for (rdpos = 0, wrpos = 0; wrpos < wrlim; rdpos++, wrpos++)
if (__xn_put_user(fds->fds_bits[rdpos], cfds->fds_bits + wrpos))
return -EFAULT;
return (ssize_t)wrlim * sizeof(compat_ulong_t);
}
static int sys_rtdm_recvmsg(struct pt_regs *regs)
{
struct task_struct *p = current;
struct msghdr krnl_msg;
int ret;
if (unlikely(!access_wok(__xn_reg_arg2(regs),
sizeof(krnl_msg)) ||
__xn_copy_from_user(&krnl_msg,
(void __user *)__xn_reg_arg2(regs),
sizeof(krnl_msg))))
return -EFAULT;
ret = __rt_dev_recvmsg(p, __xn_reg_arg1(regs), &krnl_msg,
__xn_reg_arg3(regs));
if (unlikely(ret < 0))
return ret;
if (unlikely(__xn_copy_to_user((void __user *)__xn_reg_arg2(regs),
&krnl_msg, sizeof(krnl_msg))))
return -EFAULT;
return ret;
}
