1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
3
4 #include "vmlinux.h"
5 #include <bpf/bpf_helpers.h>
6 #include <bpf/bpf_tracing.h>
7 #include "bpf_misc.h"
8 #include "bpf_kfuncs.h"
9 #include "crypto_common.h"
10
11 int status;
12 SEC("syscall")
13 int crypto_release(void *ctx)
14 {
15 struct bpf_crypto_params params = {
16 .type = "skcipher",
17 .algo = "ecb(aes)",
18 .key_len = 16,
19 };
20
21 struct bpf_crypto_ctx *cctx;
22 int err = 0;
23
24 status = 0;
25
26 cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err);
27
28 if (!cctx) {
29 status = err;
30 return 0;
31 }
32
33 bpf_crypto_ctx_release(cctx);
34
35 return 0;
36 }
37
38 SEC("syscall")
39 __failure __msg("Unreleased reference")
40 int crypto_acquire(void *ctx)
41 {
42 struct bpf_crypto_params params = {
43 .type = "skcipher",
44 .algo = "ecb(aes)",
45 .key_len = 16,
46 };
47 struct bpf_crypto_ctx *cctx;
48 int err = 0;
49
50 status = 0;
51
52 cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err);
53
54 if (!cctx) {
55 status = err;
56 return 0;
57 }
58
59 cctx = bpf_crypto_ctx_acquire(cctx);
60 if (!cctx)
61 return -EINVAL;
62
63 bpf_crypto_ctx_release(cctx);
64
65 return 0;
66 }
67
68 char __license[] SEC("license") = "GPL";
69
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.