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authorAl Viro <viro@zeniv.linux.org.uk>2017-03-22 20:26:57 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2017-03-29 01:23:58 +0300
commitdc1425352325bf8a56f5d8ecd1258671808bcadd (patch)
tree5e8eee371ff56e95006f615688b4dfab51fb1eb5 /arch/score
parent4b4554f6d562c15159b053fad4146ced2201bc4c (diff)
downloadlinux-dc1425352325bf8a56f5d8ecd1258671808bcadd.tar.xz
score: switch to RAW_COPY_USER
... and kill copy_in_user() - it's not a biarch architecture, to start with Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/score')
-rw-r--r--arch/score/Kconfig1
-rw-r--r--arch/score/include/asm/uaccess.h54
2 files changed, 7 insertions, 48 deletions
diff --git a/arch/score/Kconfig b/arch/score/Kconfig
index 507d63181389..4d241cfedc3b 100644
--- a/arch/score/Kconfig
+++ b/arch/score/Kconfig
@@ -15,6 +15,7 @@ config SCORE
select MODULES_USE_ELF_REL
select CLONE_BACKWARDS
select CPU_NO_EFFICIENT_FFS
+ select ARCH_HAS_RAW_COPY_USER
choice
prompt "System type"
diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h
index 79125fa6ed43..916e5dbf0bfd 100644
--- a/arch/score/include/asm/uaccess.h
+++ b/arch/score/include/asm/uaccess.h
@@ -295,61 +295,19 @@ extern void __put_user_unknown(void);
extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
static inline unsigned long
-copy_from_user(void *to, const void *from, unsigned long len)
+raw_copy_from_user(void *to, const void __user *from, unsigned long len)
{
- unsigned long res = len;
-
- if (likely(access_ok(VERIFY_READ, from, len)))
- res = __copy_tofrom_user(to, from, len);
-
- if (unlikely(res))
- memset(to + (len - res), 0, res);
-
- return res;
+ return __copy_tofrom_user(to, (__force const void *)from, len);
}
static inline unsigned long
-copy_to_user(void *to, const void *from, unsigned long len)
+raw_copy_to_user(void __user *to, const void *from, unsigned long len)
{
- if (likely(access_ok(VERIFY_WRITE, to, len)))
- len = __copy_tofrom_user(to, from, len);
-
- return len;
+ return __copy_tofrom_user((__force void *)to, from, len);
}
-static inline unsigned long
-__copy_from_user(void *to, const void *from, unsigned long len)
-{
- unsigned long left = __copy_tofrom_user(to, from, len);
- if (unlikely(left))
- memset(to + (len - left), 0, left);
- return left;
-}
-
-#define __copy_to_user(to, from, len) \
- __copy_tofrom_user((to), (from), (len))
-
-static inline unsigned long
-__copy_to_user_inatomic(void *to, const void *from, unsigned long len)
-{
- return __copy_to_user(to, from, len);
-}
-
-static inline unsigned long
-__copy_from_user_inatomic(void *to, const void *from, unsigned long len)
-{
- return __copy_tofrom_user(to, from, len);
-}
-
-#define __copy_in_user(to, from, len) __copy_tofrom_user(to, from, len)
-
-static inline unsigned long
-copy_in_user(void *to, const void *from, unsigned long len)
-{
- if (access_ok(VERIFY_READ, from, len) &&
- access_ok(VERIFY_WRITE, to, len))
- return __copy_tofrom_user(to, from, len);
-}
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
/*
* __clear_user: - Zero a block of memory in user space, with less checking.