Date: Mon, 11 Jun 2018 15:42:29 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r334953 - head/sys/compat/linuxkpi/common/include/asm Message-ID: <201806111542.w5BFgTdu028218@repo.freebsd.org>
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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 <johalun0@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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