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authorAl Viro <viro@zeniv.linux.org.uk>2017-03-28 08:33:09 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2017-03-29 01:24:03 +0300
commita668ce3a001fe0564deb6357129bfd81f757743b (patch)
tree80714c1ec1b3763020a2efec695738e4fdd654d1 /arch/um
parentd597580d373774b1bdab84b3d26ff0b55162b916 (diff)
downloadlinux-a668ce3a001fe0564deb6357129bfd81f757743b.tar.xz
um: switch to RAW_COPY_USER
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Kconfig.common1
-rw-r--r--arch/um/include/asm/uaccess.h8
-rw-r--r--arch/um/kernel/skas/uaccess.c8
3 files changed, 9 insertions, 8 deletions
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index fd443852103c..e13f763849b1 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -13,6 +13,7 @@ config UML
select GENERIC_CLOCKEVENTS
select HAVE_GCC_PLUGINS
select TTY # Needed for line.c
+ select ARCH_HAS_RAW_COPY_USER
config MMU
bool
diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h
index 9396c8a4e920..cc00fc50768f 100644
--- a/arch/um/include/asm/uaccess.h
+++ b/arch/um/include/asm/uaccess.h
@@ -21,8 +21,8 @@
#define __addr_range_nowrap(addr, size) \
((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
-extern long __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern long __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n);
extern long __strncpy_from_user(char *dst, const char __user *src, long count);
extern long __strnlen_user(const void __user *str, long len);
extern unsigned long __clear_user(void __user *mem, unsigned long len);
@@ -33,8 +33,8 @@ static inline int __access_ok(unsigned long addr, unsigned long size);
#define __clear_user __clear_user
#define __strnlen_user __strnlen_user
#define __strncpy_from_user __strncpy_from_user
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
#include <asm-generic/uaccess.h>
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index 22c9f79db8e6..d450797a3a7c 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -139,7 +139,7 @@ static int copy_chunk_from_user(unsigned long from, int len, void *arg)
return 0;
}
-long __copy_from_user(void *to, const void __user *from, unsigned long n)
+unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (uaccess_kernel()) {
memcpy(to, (__force void*)from, n);
@@ -148,7 +148,7 @@ long __copy_from_user(void *to, const void __user *from, unsigned long n)
return buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to);
}
-EXPORT_SYMBOL(__copy_from_user);
+EXPORT_SYMBOL(raw_copy_from_user);
static int copy_chunk_to_user(unsigned long to, int len, void *arg)
{
@@ -159,7 +159,7 @@ static int copy_chunk_to_user(unsigned long to, int len, void *arg)
return 0;
}
-long __copy_to_user(void __user *to, const void *from, unsigned long n)
+unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
if (uaccess_kernel()) {
memcpy((__force void *) to, from, n);
@@ -168,7 +168,7 @@ long __copy_to_user(void __user *to, const void *from, unsigned long n)
return buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from);
}
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(raw_copy_to_user);
static int strncpy_chunk_from_user(unsigned long from, int len, void *arg)
{