summaryrefslogtreecommitdiff
path: root/arch/ia64/include/asm/uaccess.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/include/asm/uaccess.h')
-rw-r--r--arch/ia64/include/asm/uaccess.h97
1 files changed, 27 insertions, 70 deletions
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
index d471d1a1afd0..82a7646c4416 100644
--- a/arch/ia64/include/asm/uaccess.h
+++ b/arch/ia64/include/asm/uaccess.h
@@ -39,6 +39,7 @@
#include <asm/intrinsics.h>
#include <asm/pgtable.h>
#include <asm/io.h>
+#include <asm/extable.h>
/*
* For historical reasons, the following macros are grossly misnamed:
@@ -58,14 +59,14 @@
* address TASK_SIZE is never valid. We also need to make sure that the address doesn't
* point inside the virtually mapped linear page table.
*/
-#define __access_ok(addr, size, segment) \
-({ \
- __chk_user_ptr(addr); \
- (likely((unsigned long) (addr) <= (segment).seg) \
- && ((segment).seg == KERNEL_DS.seg \
- || likely(REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT))); \
-})
-#define access_ok(type, addr, size) __access_ok((addr), (size), get_fs())
+static inline int __access_ok(const void __user *p, unsigned long size)
+{
+ unsigned long addr = (unsigned long)p;
+ unsigned long seg = get_fs().seg;
+ return likely(addr <= seg) &&
+ (seg == KERNEL_DS.seg || likely(REGION_OFFSET(addr) < RGN_MAP_LIMIT));
+}
+#define access_ok(type, addr, size) __access_ok((addr), (size))
/*
* These are the main single-value transfer routines. They automatically
@@ -75,8 +76,8 @@
* (a) re-use the arguments for side effects (sizeof/typeof is ok)
* (b) require any knowledge of processes at this stage
*/
-#define put_user(x, ptr) __put_user_check((__typeof__(*(ptr))) (x), (ptr), sizeof(*(ptr)), get_fs())
-#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)), get_fs())
+#define put_user(x, ptr) __put_user_check((__typeof__(*(ptr))) (x), (ptr), sizeof(*(ptr)))
+#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
/*
* The "__xxx" versions do not do address space checking, useful when
@@ -179,13 +180,13 @@ extern void __get_user_unknown (void);
* could clobber r8 and r9 (among others). Thus, be careful not to evaluate it while
* using r8/r9.
*/
-#define __do_get_user(check, x, ptr, size, segment) \
+#define __do_get_user(check, x, ptr, size) \
({ \
const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
__typeof__ (size) __gu_size = (size); \
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
- if (!check || __access_ok(__gu_ptr, size, segment)) \
+ if (!check || __access_ok(__gu_ptr, size)) \
switch (__gu_size) { \
case 1: __get_user_size(__gu_val, __gu_ptr, 1, __gu_err); break; \
case 2: __get_user_size(__gu_val, __gu_ptr, 2, __gu_err); break; \
@@ -197,8 +198,8 @@ extern void __get_user_unknown (void);
__gu_err; \
})
-#define __get_user_nocheck(x, ptr, size) __do_get_user(0, x, ptr, size, KERNEL_DS)
-#define __get_user_check(x, ptr, size, segment) __do_get_user(1, x, ptr, size, segment)
+#define __get_user_nocheck(x, ptr, size) __do_get_user(0, x, ptr, size)
+#define __get_user_check(x, ptr, size) __do_get_user(1, x, ptr, size)
extern void __put_user_unknown (void);
@@ -206,14 +207,14 @@ extern void __put_user_unknown (void);
* Evaluating arguments X, PTR, SIZE, and SEGMENT may involve subroutine-calls, which
* could clobber r8 (among others). Thus, be careful not to evaluate them while using r8.
*/
-#define __do_put_user(check, x, ptr, size, segment) \
+#define __do_put_user(check, x, ptr, size) \
({ \
__typeof__ (x) __pu_x = (x); \
__typeof__ (*(ptr)) __user *__pu_ptr = (ptr); \
__typeof__ (size) __pu_size = (size); \
long __pu_err = -EFAULT; \
\
- if (!check || __access_ok(__pu_ptr, __pu_size, segment)) \
+ if (!check || __access_ok(__pu_ptr, __pu_size)) \
switch (__pu_size) { \
case 1: __put_user_size(__pu_x, __pu_ptr, 1, __pu_err); break; \
case 2: __put_user_size(__pu_x, __pu_ptr, 2, __pu_err); break; \
@@ -224,8 +225,8 @@ extern void __put_user_unknown (void);
__pu_err; \
})
-#define __put_user_nocheck(x, ptr, size) __do_put_user(0, x, ptr, size, KERNEL_DS)
-#define __put_user_check(x, ptr, size, segment) __do_put_user(1, x, ptr, size, segment)
+#define __put_user_nocheck(x, ptr, size) __do_put_user(0, x, ptr, size)
+#define __put_user_check(x, ptr, size) __do_put_user(1, x, ptr, size)
/*
* Complex access routines
@@ -234,56 +235,19 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use
unsigned long count);
static inline unsigned long
-__copy_to_user (void __user *to, const void *from, unsigned long count)
+raw_copy_to_user(void __user *to, const void *from, unsigned long count)
{
- check_object_size(from, count, true);
-
return __copy_user(to, (__force void __user *) from, count);
}
static inline unsigned long
-__copy_from_user (void *to, const void __user *from, unsigned long count)
+raw_copy_from_user(void *to, const void __user *from, unsigned long count)
{
- check_object_size(to, count, false);
-
return __copy_user((__force void __user *) to, from, count);
}
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-#define copy_to_user(to, from, n) \
-({ \
- void __user *__cu_to = (to); \
- const void *__cu_from = (from); \
- long __cu_len = (n); \
- \
- if (__access_ok(__cu_to, __cu_len, get_fs())) { \
- check_object_size(__cu_from, __cu_len, true); \
- __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \
- } \
- __cu_len; \
-})
-
-static inline unsigned long
-copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- check_object_size(to, n, false);
- if (likely(__access_ok(from, n, get_fs())))
- n = __copy_user((__force void __user *) to, from, n);
- else
- memset(to, 0, n);
- return n;
-}
-
-#define __copy_in_user(to, from, size) __copy_user((to), (from), (size))
-
-static inline unsigned long
-copy_in_user (void __user *to, const void __user *from, unsigned long n)
-{
- if (likely(access_ok(VERIFY_READ, from, n) && access_ok(VERIFY_WRITE, to, n)))
- n = __copy_user(to, from, n);
- return n;
-}
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
extern unsigned long __do_clear_user (void __user *, unsigned long);
@@ -292,7 +256,7 @@ extern unsigned long __do_clear_user (void __user *, unsigned long);
#define clear_user(to, n) \
({ \
unsigned long __cu_len = (n); \
- if (__access_ok(to, __cu_len, get_fs())) \
+ if (__access_ok(to, __cu_len)) \
__cu_len = __do_clear_user(to, __cu_len); \
__cu_len; \
})
@@ -308,7 +272,7 @@ extern long __must_check __strncpy_from_user (char *to, const char __user *from,
({ \
const char __user * __sfu_from = (from); \
long __sfu_ret = -EFAULT; \
- if (__access_ok(__sfu_from, 0, get_fs())) \
+ if (__access_ok(__sfu_from, 0)) \
__sfu_ret = __strncpy_from_user((to), __sfu_from, (n)); \
__sfu_ret; \
})
@@ -320,7 +284,7 @@ extern unsigned long __strlen_user (const char __user *);
({ \
const char __user *__su_str = (str); \
unsigned long __su_ret = 0; \
- if (__access_ok(__su_str, 0, get_fs())) \
+ if (__access_ok(__su_str, 0)) \
__su_ret = __strlen_user(__su_str); \
__su_ret; \
})
@@ -336,18 +300,11 @@ extern unsigned long __strnlen_user (const char __user *, long);
({ \
const char __user *__su_str = (str); \
unsigned long __su_ret = 0; \
- if (__access_ok(__su_str, 0, get_fs())) \
+ if (__access_ok(__su_str, 0)) \
__su_ret = __strnlen_user(__su_str, len); \
__su_ret; \
})
-#define ARCH_HAS_RELATIVE_EXTABLE
-
-struct exception_table_entry {
- int insn; /* location-relative address of insn this fixup is for */
- int fixup; /* location-relative continuation addr.; if bit 2 is set, r9 is set to 0 */
-};
-
#define ARCH_HAS_TRANSLATE_MEM_PTR 1
static __inline__ void *
xlate_dev_mem_ptr(phys_addr_t p)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 06:53:27 +0300