Author: hselasky
Date: Mon Jun 11 15:42:29 2018
New Revision: 334953
URL: https://svnweb.freebsd.org/changeset/base/334953
Log:
Implement the user_access_begin(), user_access_end(), usafe_get_user() and
unsafe_put_user() function macros in the LinuxKPI.
Submitted by: Johannes Lundberg <johal...@gmail.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks
Modified:
head/sys/compat/linuxkpi/common/include/asm/uaccess.h
Modified: head/sys/compat/linuxkpi/common/include/asm/uaccess.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/asm/uaccess.h Mon Jun 11
15:28:20 2018 (r334952)
+++ head/sys/compat/linuxkpi/common/include/asm/uaccess.h Mon Jun 11
15:42:29 2018 (r334953)
@@ -52,4 +52,17 @@ copy_from_user(void *to, const void *from, unsigned lo
#define __copy_from_user(...) copy_from_user(__VA_ARGS__)
#define __copy_in_user(...) copy_from_user(__VA_ARGS__)
+#define user_access_begin() do { } while (0)
+#define user_access_end() do { } while (0)
+
+#define unsafe_get_user(x, ptr, err) do { \
+ if (unlikely(__get_user(x, ptr))) \
+ goto err; \
+} while (0)
+
+#define unsafe_put_user(x, ptr, err) do { \
+ if (unlikely(__put_user(x, ptr))) \
+ goto err; \
+} while (0)
+
#endif /* _ASM_UACCESS_H_ */
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