76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2017-2018 The strace developers.
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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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#ifndef STRACE_NETLINK_H
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#define STRACE_NETLINK_H
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#include <stdbool.h>
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#include <sys/socket.h>
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#include <linux/netlink.h>
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#ifndef NETLINK_SOCK_DIAG
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# define NETLINK_SOCK_DIAG 4
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#endif
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#ifndef NLM_F_NONREC
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# define NLM_F_NONREC 0x100
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#endif
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#ifndef NLM_F_CAPPED
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# define NLM_F_CAPPED 0x100
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#endif
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#undef NLMSG_HDRLEN
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#define NLMSG_HDRLEN ((unsigned int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
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#ifndef NLMSG_MIN_TYPE
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# define NLMSG_MIN_TYPE 0x10
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#endif
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#ifndef NLA_ALIGN
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# define NLA_ALIGN(len) (((len) + 3) & ~3)
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#endif
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#undef NLA_HDRLEN
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#define NLA_HDRLEN ((unsigned int) NLA_ALIGN(sizeof(struct nlattr)))
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#ifndef NLA_TYPE_MASK
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# define NLA_F_NESTED (1 << 15)
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# define NLA_F_NET_BYTEORDER (1 << 14)
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# define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
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#endif
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static inline bool
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is_nlmsg_ok(const struct nlmsghdr *const nlh, const ssize_t len)
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{
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return len >= (ssize_t) sizeof(*nlh)
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&& nlh->nlmsg_len >= sizeof(*nlh)
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&& (size_t) len >= nlh->nlmsg_len;
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}
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#endif /* !STRACE_NETLINK_H */
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