strace/nlattr.h
Dmitry V. Levin b93d52fe3d Change the license of strace to LGPL-2.1-or-later
strace is now provided under the terms of the GNU Lesser General
Public License version 2.1 or later, see COPYING for more details.

strace test suite is now provided under the terms of the GNU General
Public License version 2 or later, see tests/COPYING for more details.
2018-12-10 00:00:00 +00:00

93 lines
2.1 KiB
C

/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2016-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef STRACE_NLATTR_H
#define STRACE_NLATTR_H
#include "xlat.h"
struct decode_nla_xlat_opts {
const struct xlat *xlat;
size_t xlat_size; /* is not needed for XT_NORMAL */
const char *dflt;
enum xlat_type xt;
enum xlat_style style;
const char *prefix;
const char *suffix;
uint64_t (*process_fn)(uint64_t val);
size_t size;
};
/*
* Used for IFLA_LINKINFO decoding. Since there are no other indicators
* regarding the nature of data except for previously provided string
* in an IFLA_LINKINFO_KIND attribute, we have to store it in order to pass
* between calls as an opaque data.
*/
struct ifla_linkinfo_ctx {
char kind[16];
};
typedef bool (*nla_decoder_t)(struct tcb *, kernel_ulong_t addr,
unsigned int len, const void *opaque_data);
/**
* The case of non-NULL decoders and zero size is handled in a special way:
* the zeroth decoder is always called with nla_type being passed as opaque
* data.
*/
extern void
decode_nlattr(struct tcb *,
kernel_ulong_t addr,
unsigned int len,
const struct xlat *,
const char *dflt,
const nla_decoder_t *decoders,
unsigned int size,
const void *opaque_data);
#define DECL_NLA(name) \
extern bool \
decode_nla_ ## name(struct tcb *, kernel_ulong_t addr, \
unsigned int len, const void *) \
/* End of DECL_NLA definition. */
DECL_NLA(x8);
DECL_NLA(x16);
DECL_NLA(x32);
DECL_NLA(x64);
DECL_NLA(u8);
DECL_NLA(u16);
DECL_NLA(u32);
DECL_NLA(u64);
DECL_NLA(s8);
DECL_NLA(s16);
DECL_NLA(s32);
DECL_NLA(s64);
DECL_NLA(be16);
DECL_NLA(be64);
DECL_NLA(xval);
DECL_NLA(flags);
DECL_NLA(str);
DECL_NLA(strn);
DECL_NLA(fd);
DECL_NLA(uid);
DECL_NLA(gid);
DECL_NLA(ifindex);
DECL_NLA(ether_proto);
DECL_NLA(ip_proto);
DECL_NLA(in_addr);
DECL_NLA(in6_addr);
DECL_NLA(meminfo);
DECL_NLA(rt_class);
DECL_NLA(rt_proto);
DECL_NLA(tc_stats);
#endif /* !STRACE_NLATTR_H */