git: 631bf94fe9df - main - linuxkpi: Add typecheck.h
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Wed, 29 Jun 2022 07:55:58 UTC
The branch main has been updated by manu: URL: https://cgit.FreeBSD.org/src/commit/?id=631bf94fe9dffb48377061e5b95812990f687b3d commit 631bf94fe9dffb48377061e5b95812990f687b3d Author: Emmanuel Vadot <manu@FreeBSD.org> AuthorDate: 2022-06-23 08:10:07 +0000 Commit: Emmanuel Vadot <manu@FreeBSD.org> CommitDate: 2022-06-29 07:55:15 +0000 linuxkpi: Add typecheck.h typecheck macro check if the type of a variable matches a type. MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D35569 --- .../linuxkpi/common/include/linux/typecheck.h | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/typecheck.h b/sys/compat/linuxkpi/common/include/linux/typecheck.h new file mode 100644 index 000000000000..0e813962a7f5 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/typecheck.h @@ -0,0 +1,38 @@ +/*- + * Copyright (c) 2022 Beckhoff Automation GmbH & Co. KG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#ifndef _LINUXKPI_LINUX_TYPECHECK_H_ +#define _LINUXKPI_LINUX_TYPECHECK_H_ + +#define typecheck(type,x) \ +({ type __var1; \ + typeof(x) __var2; \ + (void)(&__var1 == &__var2); \ + 1; \ +}) + + +#endif /* _LINUXKPI_LINUX_TYPECHECK_H_ */