#ifndef __ARCH_UM_UACCESS_H
#define __ARCH_UM_UACCESS_H
-#include "linux/config.h"
#include "choose-mode.h"
#ifdef CONFIG_MODE_TT
-#include "../kernel/tt/include/uaccess.h"
+#include "uaccess-tt.h"
#endif
#ifdef CONFIG_MODE_SKAS
-#include "../kernel/skas/include/uaccess.h"
+#include "uaccess-skas.h"
#endif
-#define access_ok(type, addr, size) \
- CHOOSE_MODE_PROC(access_ok_tt, access_ok_skas, type, addr, size)
+#include "asm/fixmap.h"
-static inline int verify_area(int type, const void * addr, unsigned long size)
-{
- return(CHOOSE_MODE_PROC(verify_area_tt, verify_area_skas, type, addr,
- size));
-}
+#define __under_task_size(addr, size) \
+ (((unsigned long) (addr) < TASK_SIZE) && \
+ (((unsigned long) (addr) + (size)) < TASK_SIZE))
+
+#define __access_ok_vsyscall(type, addr, size) \
+ ((type == VERIFY_READ) && \
+ ((unsigned long) (addr) >= FIXADDR_USER_START) && \
+ ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
+ ((unsigned long) (addr) + (size) >= (unsigned long)(addr)))
+
+#define __addr_range_nowrap(addr, size) \
+ ((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
+
+#define access_ok(type, addr, size) \
+ (__addr_range_nowrap(addr, size) && \
+ (__under_task_size(addr, size) || \
+ __access_ok_vsyscall(type, addr, size) || \
+ segment_eq(get_fs(), KERNEL_DS) || \
+ CHOOSE_MODE_PROC(access_ok_tt, access_ok_skas, type, addr, size)))
-static inline int copy_from_user(void *to, const void *from, int n)
+static inline int copy_from_user(void *to, const void __user *from, int n)
{
return(CHOOSE_MODE_PROC(copy_from_user_tt, copy_from_user_skas, to,
from, n));
}
-static inline int copy_to_user(void *to, const void *from, int n)
+static inline int copy_to_user(void __user *to, const void *from, int n)
{
return(CHOOSE_MODE_PROC(copy_to_user_tt, copy_to_user_skas, to,
from, n));
* and returns @count.
*/
-static inline int strncpy_from_user(char *dst, const char *src, int count)
+static inline int strncpy_from_user(char *dst, const char __user *src, int count)
{
return(CHOOSE_MODE_PROC(strncpy_from_user_tt, strncpy_from_user_skas,
dst, src, count));
* Returns number of bytes that could not be cleared.
* On success, this will be zero.
*/
-static inline int clear_user(void *mem, int len)
+static inline int clear_user(void __user *mem, int len)
{
return(CHOOSE_MODE_PROC(clear_user_tt, clear_user_skas, mem, len));
}
* On exception, returns 0.
* If the string is too long, returns a value greater than @n.
*/
-static inline int strnlen_user(const void *str, int len)
+static inline int strnlen_user(const void __user *str, long len)
{
return(CHOOSE_MODE_PROC(strnlen_user_tt, strnlen_user_skas, str, len));
}