1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef __ASM_SH_UACCESS_H 13 #define __ASM_SH_UACCESS_H 14 15 #include <linux/errno.h> 16 #include <linux/sched.h> 17 #include <asm/segment.h> 18 19 #define VERIFY_READ 0 20 #define VERIFY_WRITE 1 21 22 #define __addr_ok(addr) ((unsigned long __force)(addr) < current_thread_info()->addr_limit.seg) 23 24 #define __access_ok(addr, size) (__addr_ok((addr) + (size))) 25 #define access_ok(type, addr, size) (__chk_user_ptr(addr), __access_ok((unsigned long __force)(addr), (size))) 26 27 #define put_user(x,ptr) __put_user_check((x), (ptr), sizeof(*(ptr))) 28 #define get_user(x,ptr) __get_user_check((x), (ptr), sizeof(*(ptr))) 29 30 #define __put_user(x,ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr))) 31 #define __get_user(x,ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr))) 32 33 struct __large_struct { unsigned long buf[100]; }; 34 #define __m(x) (*(struct __large_struct __user *)(x)) 35 36 #define __get_user_nocheck(x,ptr,size) ({ long __gu_err; unsigned long __gu_val; const __typeof__(*(ptr)) __user *__gu_addr = (ptr); __chk_user_ptr(ptr); __get_user_size(__gu_val, __gu_addr, (size), __gu_err); (x) = (__typeof__(*(ptr)))__gu_val; __gu_err; }) 37 38 #define __get_user_check(x,ptr,size) ({ long __gu_err = -EFAULT; unsigned long __gu_val = 0; const __typeof__(*(ptr)) *__gu_addr = (ptr); if (likely(access_ok(VERIFY_READ, __gu_addr, (size)))) __get_user_size(__gu_val, __gu_addr, (size), __gu_err); (x) = (__typeof__(*(ptr)))__gu_val; __gu_err; }) 39 40 #define __put_user_nocheck(x,ptr,size) ({ long __pu_err; __typeof__(*(ptr)) __user *__pu_addr = (ptr); __typeof__(*(ptr)) __pu_val = x; __chk_user_ptr(ptr); __put_user_size(__pu_val, __pu_addr, (size), __pu_err); __pu_err; }) 41 42 #define __put_user_check(x,ptr,size) ({ long __pu_err = -EFAULT; __typeof__(*(ptr)) __user *__pu_addr = (ptr); __typeof__(*(ptr)) __pu_val = x; if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) __put_user_size(__pu_val, __pu_addr, (size), __pu_err); __pu_err; }) 43 44 #include "uaccess_32.h" 45 46 #define __copy_to_user_inatomic __copy_to_user 47 #define __copy_from_user_inatomic __copy_from_user 48 49 #define clear_user(addr,n) ({ void __user * __cl_addr = (addr); unsigned long __cl_size = (n); if (__cl_size && access_ok(VERIFY_WRITE, ((unsigned long)(__cl_addr)), __cl_size)) __cl_size = __clear_user(__cl_addr, __cl_size); __cl_size; }) 50 51 #define strncpy_from_user(dest,src,count) ({ unsigned long __sfu_src = (unsigned long)(src); int __sfu_count = (int)(count); long __sfu_res = -EFAULT; if (__access_ok(__sfu_src, __sfu_count)) __sfu_res = __strncpy_from_user((unsigned long)(dest), __sfu_src, __sfu_count); __sfu_res; }) 52 53 #define strlen_user(str) strnlen_user(str, ~0UL >> 1) 54 55 #endif 56
