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64 lines
2.2 KiB
64 lines
2.2 KiB
/* |
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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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