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OpenCloudOS-Kernel
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alpha: kill the 'segment' argument of __access_ok() 

always equal to get_fs().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-12-27 02:26:32 -05:00
parent f14d6b4f52
commit c9df6025a6
1 changed files with 41 additions and 41 deletions
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82
arch/alpha/include/asm/uaccess.h
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@ -32,13 +32,13 @@
* - AND "addr+size" doesn't have any high-bits set
* - OR we are in kernel mode.
*/
#define __access_ok(addr, size, segment) \
(((segment).seg & (addr | size | (addr+size))) == 0)
#define __access_ok(addr, size) \
((get_fs().seg & (addr | size | (addr+size))) == 0)
#define access_ok(type, addr, size) \
({ \
__chk_user_ptr(addr); \
__access_ok(((unsigned long)(addr)), (size), get_fs()); \
#define access_ok(type, addr, size) \
({ \
__chk_user_ptr(addr); \
__access_ok(((unsigned long)(addr)), (size)); \
})
/*
@ -93,23 +93,23 @@ extern void __get_user_unknown(void);
__gu_err; \
})
#define __get_user_check(x, ptr, size) \
({ \
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
if (__access_ok((unsigned long)__gu_addr, size, get_fs())) { \
__gu_err = 0; \
switch (size) { \
case 1: __get_user_8(__gu_addr); break; \
case 2: __get_user_16(__gu_addr); break; \
case 4: __get_user_32(__gu_addr); break; \
case 8: __get_user_64(__gu_addr); break; \
default: __get_user_unknown(); break; \
} \
} \
(x) = (__force __typeof__(*(ptr))) __gu_val; \
__gu_err; \
#define __get_user_check(x, ptr, size) \
({ \
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
if (__access_ok((unsigned long)__gu_addr, size)) { \
__gu_err = 0; \
switch (size) { \
case 1: __get_user_8(__gu_addr); break; \
case 2: __get_user_16(__gu_addr); break; \
case 4: __get_user_32(__gu_addr); break; \
case 8: __get_user_64(__gu_addr); break; \
default: __get_user_unknown(); break; \
} \
} \
(x) = (__force __typeof__(*(ptr))) __gu_val; \
__gu_err; \
})
struct __large_struct { unsigned long buf[100]; };
@ -208,21 +208,21 @@ extern void __put_user_unknown(void);
__pu_err; \
})
#define __put_user_check(x, ptr, size) \
({ \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
if (__access_ok((unsigned long)__pu_addr, size, get_fs())) { \
__pu_err = 0; \
switch (size) { \
case 1: __put_user_8(x, __pu_addr); break; \
case 2: __put_user_16(x, __pu_addr); break; \
case 4: __put_user_32(x, __pu_addr); break; \
case 8: __put_user_64(x, __pu_addr); break; \
default: __put_user_unknown(); break; \
} \
} \
__pu_err; \
#define __put_user_check(x, ptr, size) \
({ \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
if (__access_ok((unsigned long)__pu_addr, size)) { \
__pu_err = 0; \
switch (size) { \
case 1: __put_user_8(x, __pu_addr); break; \
case 2: __put_user_16(x, __pu_addr); break; \
case 4: __put_user_32(x, __pu_addr); break; \
case 8: __put_user_64(x, __pu_addr); break; \
default: __put_user_unknown(); break; \
} \
} \
__pu_err; \
})
/*
@ -353,7 +353,7 @@ extern long __copy_user(void *to, const void *from, long len);
extern inline long
copy_to_user(void __user *to, const void *from, long n)
{
if (likely(__access_ok((unsigned long)to, n, get_fs())))
if (likely(__access_ok((unsigned long)to, n)))
n = __copy_user((__force void *)to, from, n);
return n;
}
@ -362,7 +362,7 @@ extern inline long
copy_from_user(void *to, const void __user *from, long n)
{
long res = n;
if (likely(__access_ok((unsigned long)from, n, get_fs())))
if (likely(__access_ok((unsigned long)from, n)))
res = __copy_from_user_inatomic(to, from, n);
if (unlikely(res))
memset(to + (n - res), 0, res);
@ -374,7 +374,7 @@ extern long __clear_user(void __user *to, long len);
extern inline long
clear_user(void __user *to, long len)
{
if (__access_ok((unsigned long)to, len, get_fs()))
if (__access_ok((unsigned long)to, len))
len = __clear_user(to, len);
return len;
}