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Gleb Fotengauer-Malinovskiy
7b7d2261aa
__stringify macro function expands its arguments, but in this messages
we expect to see ioctl request name instead of it's _IOC macro
expansion.
$ cat stringify.c
#include <stdio.h>
#include <asm/ioctl.h>
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
#define VMCI_DO_IOCTL(ioctl_name) \
char *name = __stringify(IOCTL_VMCI_ ## ioctl_name);
int main() {
VMCI_DO_IOCTL(INIT_CONTEXT)
printf("%s\n", name);
}
$ cc stringify.c
$ ./a.out
(((0U) << (((0+8)+8)+14)) | (((7)) << (0+8)) | (((0xa0)) << 0) | ((0) << ((0+8)+8)))
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Link: https://lore.kernel.org/r/20210302153346.300416-1-glebfm@altlinux.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.