static RTAI_SYSCALL_MODE int sys_rtdm_open(const char *path, long oflag)
{
struct task_struct *curr = current;
char krnl_path[RTDM_MAX_DEVNAME_LEN + 1];
if (unlikely(!__xn_access_ok(curr, VERIFY_READ, path, sizeof(krnl_path)))) {
return -EFAULT;
}
__xn_copy_from_user(curr, krnl_path, path, sizeof(krnl_path) - 1);
krnl_path[sizeof(krnl_path) - 1] = '\0';
return __rt_dev_open(curr, (const char *)krnl_path, oflag);
}
static int sys_rtdm_open(struct pt_regs *regs)
{
char krnl_path[RTDM_MAX_DEVNAME_LEN + 1];
struct task_struct *p = current;
if (unlikely(__xn_safe_strncpy_from_user(krnl_path,
(const char __user *)
__xn_reg_arg1(regs),
sizeof(krnl_path) - 1) < 0))
return -EFAULT;
krnl_path[sizeof(krnl_path) - 1] = '\0';
return __rt_dev_open(p, (const char *)krnl_path, __xn_reg_arg2(regs));
}