Dmitry V. Levin
9c1a72cd3f
As x86_64 kernel does not support x32 syscall numbers in SECCOMP_MODE_STRICT, skip affected tests on x32. * tests/seccomp-strict.c (main) [__x86_64__ && __ILP32__]: Bail out using error_msg_and_skip. * tests/prctl-seccomp-strict.c: Likewise.
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
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* Check how seccomp SECCOMP_SET_MODE_STRICT is decoded.
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*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <sys/syscall.h>
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#if defined __NR_seccomp && defined __NR_exit
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# include <assert.h>
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# include <errno.h>
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# include <stdio.h>
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# include <unistd.h>
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int
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main(void)
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{
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# if defined __x86_64__ && defined __ILP32__
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/*
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* Syscall numbers are hardcoded in
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* kernel/seccomp.c:__secure_computing_strict(),
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* but x32 syscall numbers are not supported.
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*/
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error_msg_and_skip("SECCOMP_SET_MODE_STRICT is not supported on x32");
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# else
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static const char text1[] =
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"seccomp(SECCOMP_SET_MODE_STRICT, 0, NULL) = 0\n";
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static const char text2[] = "+++ exited with 0 +++\n";
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const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
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int rc = 0;
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assert(syscall(__NR_seccomp, -1L, -1L, addr) == -1);
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printf("seccomp(%#x /* SECCOMP_SET_MODE_??? */, %u, %#lx) = -1 %s (%m)\n",
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-1, -1, addr, ENOSYS == errno ? "ENOSYS" : "EINVAL");
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fflush(stdout);
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if (syscall(__NR_seccomp, 0, 0, 0)) {
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printf("seccomp(SECCOMP_SET_MODE_STRICT, 0, NULL) = -1 %s (%m)\n",
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ENOSYS == errno ? "ENOSYS" : "EINVAL");
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fflush(stdout);
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} else {
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rc += write(1, text1, LENGTH_OF(text1)) != LENGTH_OF(text1);
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}
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rc += write(1, text2, LENGTH_OF(text2)) != LENGTH_OF(text2);
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return !!syscall(__NR_exit, rc);
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# endif
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_seccomp && __NR_exit")
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#endif
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