2 * Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
3 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
4 * Copyright (c) 2016-2018 The strace developers.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #ifndef STRACE_NLATTR_H
31 #define STRACE_NLATTR_H
35 struct decode_nla_xlat_opts {
36 const struct xlat *xlat;
37 size_t xlat_size; /* is not needed for XT_NORMAL */
40 enum xlat_style style;
43 uint64_t (*process_fn)(uint64_t val);
48 * Used for IFLA_LINKINFO decoding. Since there are no other indicators
49 * regarding the nature of data except for previously provided string
50 * in an IFLA_LINKINFO_KIND attribute, we have to store it in order to pass
51 * between calls as an opaque data.
53 struct ifla_linkinfo_ctx {
57 typedef bool (*nla_decoder_t)(struct tcb *, kernel_ulong_t addr,
58 unsigned int len, const void *opaque_data);
61 * The case of non-NULL decoders and zero size is handled in a special way:
62 * the zeroth decoder is always called with nla_type being passed as opaque
66 decode_nlattr(struct tcb *,
71 const nla_decoder_t *decoders,
73 const void *opaque_data);
75 #define DECL_NLA(name) \
77 decode_nla_ ## name(struct tcb *, kernel_ulong_t addr, \
78 unsigned int len, const void *) \
79 /* End of DECL_NLA definition. */
103 DECL_NLA(ether_proto);
110 #endif /* !STRACE_NLATTR_H */