Author: hselasky
Date: Wed Jun 20 06:57:14 2018
New Revision: 335432
URL: https://svnweb.freebsd.org/changeset/base/335432
Log:
MFC r334953:
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>
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks
Modified:
stable/11/sys/compat/linuxkpi/common/include/asm/uaccess.h
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/compat/linuxkpi/common/include/asm/uaccess.h
==============================================================================
--- stable/11/sys/compat/linuxkpi/common/include/asm/uaccess.h Wed Jun 20
06:56:18 2018 (r335431)
+++ stable/11/sys/compat/linuxkpi/common/include/asm/uaccess.h Wed Jun 20
06:57:14 2018 (r335432)
@@ -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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