1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2022 Huawei Technologies Duesseldorf GmbH
*
* Author: Roberto Sassu <roberto.sassu@huawei.com>
*/
#include <test_progs.h>
#include "test_libbpf_get_fd_by_id_opts.skel.h"
void test_libbpf_get_fd_by_id_opts(void)
{
struct test_libbpf_get_fd_by_id_opts *skel;
struct bpf_map_info info_m = {};
__u32 len = sizeof(info_m), value;
int ret, zero = 0, fd = -1;
LIBBPF_OPTS(bpf_get_fd_by_id_opts, fd_opts_rdonly,
.open_flags = BPF_F_RDONLY,
);
skel = test_libbpf_get_fd_by_id_opts__open_and_load();
if (!ASSERT_OK_PTR(skel,
"test_libbpf_get_fd_by_id_opts__open_and_load"))
return;
ret = test_libbpf_get_fd_by_id_opts__attach(skel);
if (!ASSERT_OK(ret, "test_libbpf_get_fd_by_id_opts__attach"))
goto close_prog;
ret = bpf_map_get_info_by_fd(bpf_map__fd(skel->maps.data_input),
&info_m, &len);
if (!ASSERT_OK(ret, "bpf_map_get_info_by_fd"))
goto close_prog;
fd = bpf_map_get_fd_by_id(info_m.id);
if (!ASSERT_LT(fd, 0, "bpf_map_get_fd_by_id"))
goto close_prog;
fd = bpf_map_get_fd_by_id_opts(info_m.id, NULL);
if (!ASSERT_LT(fd, 0, "bpf_map_get_fd_by_id_opts"))
goto close_prog;
fd = bpf_map_get_fd_by_id_opts(info_m.id, &fd_opts_rdonly);
if (!ASSERT_GE(fd, 0, "bpf_map_get_fd_by_id_opts"))
goto close_prog;
/* Map lookup should work with read-only fd. */
ret = bpf_map_lookup_elem(fd, &zero, &value);
if (!ASSERT_OK(ret, "bpf_map_lookup_elem"))
goto close_prog;
if (!ASSERT_EQ(value, 0, "map value mismatch"))
goto close_prog;
/* Map update should not work with read-only fd. */
ret = bpf_map_update_elem(fd, &zero, &len, BPF_ANY);
if (!ASSERT_LT(ret, 0, "bpf_map_update_elem"))
goto close_prog;
/* Map update should work with read-write fd. */
ret = bpf_map_update_elem(bpf_map__fd(skel->maps.data_input), &zero,
&len, BPF_ANY);
if (!ASSERT_OK(ret, "bpf_map_update_elem"))
goto close_prog;
/* Prog get fd with opts set should not work (no kernel support). */
ret = bpf_prog_get_fd_by_id_opts(0, &fd_opts_rdonly);
if (!ASSERT_EQ(ret, -EINVAL, "bpf_prog_get_fd_by_id_opts"))
goto close_prog;
/* Link get fd with opts set should not work (no kernel support). */
ret = bpf_link_get_fd_by_id_opts(0, &fd_opts_rdonly);
if (!ASSERT_EQ(ret, -EINVAL, "bpf_link_get_fd_by_id_opts"))
goto close_prog;
/* BTF get fd with opts set should not work (no kernel support). */
ret = bpf_btf_get_fd_by_id_opts(0, &fd_opts_rdonly);
ASSERT_EQ(ret, -EINVAL, "bpf_btf_get_fd_by_id_opts");
close_prog:
if (fd >= 0)
close(fd);
test_libbpf_get_fd_by_id_opts__destroy(skel);
}
|
