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/*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
#include "tests.h"
#include <sys/syscall.h>
#ifdef HAVE_PRCTL
# include <sys/prctl.h>
#endif
#if defined HAVE_PRCTL && defined PR_SET_SECCOMP && defined __NR_exit
# include <assert.h>
# include <errno.h>
# include <stdio.h>
# include <unistd.h>
int
main(void)
{
# if defined __x86_64__ && defined __ILP32__
/*
* Syscall numbers are hardcoded in
* kernel/seccomp.c:__secure_computing_strict(),
* but x32 syscall numbers are not supported.
*/
error_msg_and_skip("SECCOMP_MODE_STRICT is not supported on x32");
# else
static const char text1[] =
"prctl(PR_SET_SECCOMP, SECCOMP_MODE_STRICT) = 0\n";
static const char text2[] = "+++ exited with 0 +++\n";
int rc = 0;
assert(prctl(PR_SET_SECCOMP, -1L, 1, 2, 3) == -1);
printf("prctl(PR_SET_SECCOMP, %#x /* SECCOMP_MODE_??? */, 0x1, 0x2, 0x3)"
" = -1 %s (%m)\n", -1, ENOSYS == errno ? "ENOSYS" : "EINVAL");
fflush(stdout);
if (prctl(PR_SET_SECCOMP, 1)) {
printf("prctl(PR_SET_SECCOMP, SECCOMP_MODE_STRICT) = -1 %s (%m)\n",
ENOSYS == errno ? "ENOSYS" : "EINVAL");
fflush(stdout);
} else {
rc += write(1, text1, LENGTH_OF(text1)) != LENGTH_OF(text1);
}
rc += write(1, text2, LENGTH_OF(text2)) != LENGTH_OF(text2);
return !!syscall(__NR_exit, rc);
# endif
}
#else
SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_SET_SECCOMP && __NR_exit")
#endif