diff options
| -rw-r--r-- | arch/ia64/include/asm/uaccess.h | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h index 24b39341f816..22c4e6d5d104 100644 --- a/arch/ia64/include/asm/uaccess.h +++ b/arch/ia64/include/asm/uaccess.h @@ -59,14 +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 @@ -186,7 +186,7 @@ extern void __get_user_unknown (void); __typeof__ (size) __gu_size = (size); \ long __gu_err = -EFAULT; \ unsigned long __gu_val = 0; \ - if (!check || __access_ok(__gu_ptr, size, get_fs())) \ + 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; \ @@ -214,7 +214,7 @@ extern void __put_user_unknown (void); __typeof__ (size) __pu_size = (size); \ long __pu_err = -EFAULT; \ \ - if (!check || __access_ok(__pu_ptr, __pu_size, get_fs())) \ + 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; \ @@ -258,7 +258,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) const void *__cu_from = (from); \ long __cu_len = (n); \ \ - if (__access_ok(__cu_to, __cu_len, get_fs())) { \ + if (__access_ok(__cu_to, __cu_len)) { \ check_object_size(__cu_from, __cu_len, true); \ __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ } \ @@ -269,7 +269,7 @@ 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()))) + if (likely(__access_ok(from, n))) n = __copy_user((__force void __user *) to, from, n); else memset(to, 0, n); @@ -293,7 +293,7 @@ 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; \ }) @@ -309,7 +309,7 @@ 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; \ }) @@ -321,7 +321,7 @@ 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; \ }) @@ -337,7 +337,7 @@ 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; \ }) |