Dmitry V. Levin
745c53410f
* bpf_seccomp_filter.c [!SECCOMP_RET_ACTION]: Remove. [!SECCOMP_RET_ACTION_FULL] (SECCOMP_RET_ACTION_FULL): Define. (print_seccomp_filter_k): Use SECCOMP_RET_ACTION_FULL instead of SECCOMP_RET_ACTION. * xlat/seccomp_ret_action.in: Add SECCOMP_RET_KILL_PROCESS introduced by linux kernel commit v4.14-rc2~15^2~3.
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/*
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* Decoder of seccomp filter programs.
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*
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* Copyright (c) 2015-2017 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 "defs.h"
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#include "bpf_filter.h"
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#include <linux/filter.h>
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#ifdef HAVE_LINUX_SECCOMP_H
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# include <linux/seccomp.h>
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#endif
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#ifndef SECCOMP_RET_ACTION_FULL
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# define SECCOMP_RET_ACTION_FULL 0xffff0000U
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#endif
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#include "xlat/seccomp_ret_action.h"
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static bool
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print_seccomp_filter_k(const struct bpf_filter_block *const fp)
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{
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if (BPF_CLASS(fp->code) == BPF_RET) {
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unsigned int action = SECCOMP_RET_ACTION_FULL & fp->k;
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unsigned int data = fp->k & ~action;
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printxval(seccomp_ret_action, action, "SECCOMP_RET_???");
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if (data)
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tprintf("|%#x", data);
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return true;
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}
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return false;
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}
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void
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print_seccomp_fprog(struct tcb *const tcp, const kernel_ulong_t addr,
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const unsigned short len)
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{
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print_bpf_fprog(tcp, addr, len, print_seccomp_filter_k);
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}
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void
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decode_seccomp_fprog(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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decode_bpf_fprog(tcp, addr, print_seccomp_filter_k);
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}
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