libseccomp/src/gen_bpf.h

   1 /**
   2  * Seccomp BPF Translator
   3  *
   4  * Copyright (c) 2012 Red Hat <pmoore@redhat.com>
   5  * Author: Paul Moore <paul@paul-moore.com>
   6  */
   7
   8 /*
   9  * This library is free software; you can redistribute it and/or modify it
  10  * under the terms of version 2.1 of the GNU Lesser General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This library is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
  16  * for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this library; if not, see <http://www.gnu.org/licenses>.
  20  */
  21
  22 #ifndef _TRANSLATOR_BPF_H
  23 #define _TRANSLATOR_BPF_H
  24
  25 #include <inttypes.h>
  26
  27 #include "arch.h"
  28 #include "db.h"
  29 #include "system.h"
  30
  31 /* NOTE - do not change this structure, it is part of the prctl() API */
  32 struct bpf_program {
  33         uint16_t blk_cnt;
  34         bpf_instr_raw *blks;
  35 };
  36 #define BPF_PGM_SIZE(x) \
  37         ((x)->blk_cnt * sizeof(*((x)->blks)))
  38
  39 struct bpf_program *gen_bpf_generate(const struct db_filter_col *col);
  40 void gen_bpf_release(struct bpf_program *program);
  41
  42 #endif