65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
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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 DEF_MPERS_TYPE(struct_sock_fprog)
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#include <linux/filter.h>
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typedef struct sock_fprog struct_sock_fprog;
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#include MPERS_DEFS
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#include "bpf_fprog.h"
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MPERS_PRINTER_DECL(unsigned int, get_sock_fprog_size, void)
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{
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return sizeof(struct_sock_fprog);
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}
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MPERS_PRINTER_DECL(bool, fetch_bpf_fprog, struct tcb *const tcp,
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const kernel_ulong_t addr, void *const p)
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{
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struct bpf_fprog *pfp = p;
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struct_sock_fprog mfp;
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if ((sizeof(*pfp) == sizeof(mfp))
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&& (offsetof(struct bpf_fprog, filter) ==
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offsetof(struct_sock_fprog, filter)))
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return !umove_or_printaddr(tcp, addr, pfp);
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if (umove_or_printaddr(tcp, addr, &mfp))
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return false;
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pfp->len = mfp.len;
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pfp->filter =
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#ifndef IN_MPERS
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(uintptr_t)
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#endif
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mfp.filter;
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return true;
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}
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