2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
6 #ifndef __SKAS_UACCESS_H
7 #define __SKAS_UACCESS_H
10 #include "asm/fixmap.h"
12 #define access_ok_skas(type, addr, size) \
13 ((segment_eq(get_fs(), KERNEL_DS)) || \
14 (((unsigned long) (addr) < TASK_SIZE) && \
15 ((unsigned long) (addr) + (size) <= TASK_SIZE)) || \
16 ((type == VERIFY_READ ) && \
17 ((unsigned long) (addr) >= FIXADDR_USER_START) && \
18 ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
19 ((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
21 static inline int verify_area_skas(int type, const void __user * addr,
24 return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
27 extern int copy_from_user_skas(void *to, const void __user *from, int n);
28 extern int copy_to_user_skas(void __user *to, const void *from, int n);
29 extern int strncpy_from_user_skas(char *dst, const char __user *src, int count);
30 extern int __clear_user_skas(void __user *mem, int len);
31 extern int clear_user_skas(void __user *mem, int len);
32 extern int strnlen_user_skas(const void __user *str, int len);
37 * Overrides for Emacs so that we follow Linus's tabbing style.
38 * Emacs will notice this stuff at the end of the file and automatically
39 * adjust the settings for this buffer only. This must remain at the end
41 * ---------------------------------------------------------------------------
43 * c-file-style: "linux"