mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 17:01:14 +00:00
be58f71037
While the run-time testing of FORTIFY_SOURCE is already present in LKDTM, there is no testing of the expected compile-time detections. In preparation for correctly supporting FORTIFY_SOURCE under Clang, adding additional FORTIFY_SOURCE defenses, and making sure FORTIFY_SOURCE doesn't silently regress with GCC, introduce a build-time test suite that checks each expected compile-time failure condition. As this is relatively backwards from standard build rules in the sense that a successful test is actually a compile _failure_, create a wrapper script to check for the correct errors, and wire it up as a dummy dependency to lib/string.o, collecting the results into a log file artifact. Signed-off-by: Kees Cook <keescook@chromium.org>
35 lines
775 B
C
35 lines
775 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#include <linux/kernel.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
|
|
void do_fortify_tests(void);
|
|
|
|
#define __BUF_SMALL 16
|
|
#define __BUF_LARGE 32
|
|
struct fortify_object {
|
|
int a;
|
|
char buf[__BUF_SMALL];
|
|
int c;
|
|
};
|
|
|
|
#define LITERAL_SMALL "AAAAAAAAAAAAAAA"
|
|
#define LITERAL_LARGE "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
|
|
const char small_src[__BUF_SMALL] = LITERAL_SMALL;
|
|
const char large_src[__BUF_LARGE] = LITERAL_LARGE;
|
|
|
|
char small[__BUF_SMALL];
|
|
char large[__BUF_LARGE];
|
|
struct fortify_object instance;
|
|
size_t size;
|
|
|
|
void do_fortify_tests(void)
|
|
{
|
|
/* Normal initializations. */
|
|
memset(&instance, 0x32, sizeof(instance));
|
|
memset(small, 0xA5, sizeof(small));
|
|
memset(large, 0x5A, sizeof(large));
|
|
|
|
TEST;
|
|
}
|