1/* 2 * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) 3 * Licensed under the GPL 4 */ 5 6#ifndef __TT_UACCESS_H 7#define __TT_UACCESS_H 8 9#include "linux/string.h" 10#include "linux/sched.h" 11#include "asm/processor.h" 12#include "asm/errno.h" 13#include "asm/current.h" 14#include "asm/a.out.h" 15#include "uml_uaccess.h" 16 17#define ABOVE_KMEM (16 * 1024 * 1024) 18 19extern unsigned long end_vm; 20extern unsigned long uml_physmem; 21 22#define is_stack(addr, size) \ 23 (((unsigned long) (addr) < STACK_TOP) && \ 24 ((unsigned long) (addr) >= STACK_TOP - ABOVE_KMEM) && \ 25 (((unsigned long) (addr) + (size)) <= STACK_TOP)) 26 27#define access_ok_tt(type, addr, size) \ 28 (is_stack(addr, size)) 29 30extern int __do_copy_from_user(void *to, const void *from, int n, 31 void **fault_addr, void **fault_catcher); 32extern int __do_strncpy_from_user(char *dst, const char *src, size_t n, 33 void **fault_addr, void **fault_catcher); 34extern int __do_clear_user(void *mem, size_t len, void **fault_addr, 35 void **fault_catcher); 36extern int __do_strnlen_user(const char *str, unsigned long n, 37 void **fault_addr, void **fault_catcher); 38 39extern int copy_from_user_tt(void *to, const void __user *from, int n); 40extern int copy_to_user_tt(void __user *to, const void *from, int n); 41extern int strncpy_from_user_tt(char *dst, const char __user *src, int count); 42extern int __clear_user_tt(void __user *mem, int len); 43extern int clear_user_tt(void __user *mem, int len); 44extern int strnlen_user_tt(const void __user *str, int len); 45 46#endif 47