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/*
* Copyright (c) 2017-2024 The strace developers.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "xmalloc.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include "netlink.h"
#include "test_netlink.h"
#include "test_nlattr.h"
#include <linux/genetlink.h>
static void
test_hdr(const int fd)
{
static const struct genlmsghdr hdr = {
.cmd = CTRL_CMD_GETFAMILY,
.version = 1
};
void *const nlh0 = midtail_alloc(NLMSG_HDRLEN, sizeof(hdr));
TEST_NETLINK_OBJECT_EX_(fd, nlh0,
0xffff, "0xffff /* GENERIC_FAMILY_??? */",
NLM_F_REQUEST | NLM_F_DUMP,
"NLM_F_REQUEST|NLM_F_DUMP",
hdr, print_quoted_hex,
printf("{cmd=%#x, version=1}", hdr.cmd);
);
}
static void
init_genlmsghdr(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = 0xffff,
.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP
);
struct genlmsghdr *const hdr = NLMSG_DATA(nlh);
SET_STRUCT(struct genlmsghdr, hdr,
.cmd = CTRL_CMD_GETFAMILY,
.version = 2,
.reserved = 0xfeed
);
}
static void
print_genlmsghdr(const unsigned int msg_len)
{
printf("{nlmsg_len=%u, nlmsg_type=%s, nlmsg_flags=%s, nlmsg_seq=0"
", nlmsg_pid=0}, {cmd=%#x, version=2, reserved=%#x}",
msg_len, "0xffff /* GENERIC_FAMILY_??? */",
"NLM_F_REQUEST|NLM_F_DUMP", CTRL_CMD_GETFAMILY, 0xfeed);
}
static void
test_nla(const int fd)
{
static char pattern[DEFAULT_STRLEN];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
const char *nla_type_str = xasprintf("%#x", CTRL_ATTR_OP);
const unsigned int hdrlen = sizeof(struct genlmsghdr);
void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
NLA_HDRLEN + sizeof(pattern));
TEST_NLATTR_(fd, nlh0, hdrlen,
init_genlmsghdr, print_genlmsghdr,
CTRL_ATTR_OP, nla_type_str,
sizeof(pattern), pattern, sizeof(pattern),
print_quoted_hex(pattern, sizeof(pattern)));
}
static void
test_nlmsg_done(const int fd)
{
const int num = 0xabcdefad;
void *const nlh0 = midtail_alloc(NLMSG_HDRLEN, sizeof(num));
TEST_NETLINK(fd, nlh0, NLMSG_DONE, NLM_F_REQUEST,
sizeof(num), &num, sizeof(num),
printf("%d", num));
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
int fd = create_nl_socket(NETLINK_GENERIC);
test_hdr(fd);
test_nla(fd);
test_nlmsg_done(fd);
printf("+++ exited with 0 +++\n");
return 0;
}
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