1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020 Facebook */
5 #include <bpf/bpf_helpers.h>
6 #include <bpf/bpf_tracing.h>
7 #include <bpf/bpf_core_read.h>
8 #include "../bpf_testmod/bpf_testmod.h"
10 __u32 raw_tp_read_sz = 0;
12 SEC("raw_tp/bpf_testmod_test_read")
13 int BPF_PROG(handle_raw_tp,
14 struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx)
16 raw_tp_read_sz = BPF_CORE_READ(read_ctx, len);
20 __u32 tp_btf_read_sz = 0;
22 SEC("tp_btf/bpf_testmod_test_read")
23 int BPF_PROG(handle_tp_btf,
24 struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx)
26 tp_btf_read_sz = read_ctx->len;
30 __u32 fentry_read_sz = 0;
32 SEC("fentry/bpf_testmod_test_read")
33 int BPF_PROG(handle_fentry,
34 struct file *file, struct kobject *kobj,
35 struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len)
41 __u32 fexit_read_sz = 0;
44 SEC("fexit/bpf_testmod_test_read")
45 int BPF_PROG(handle_fexit,
46 struct file *file, struct kobject *kobj,
47 struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len,
55 __u32 fmod_ret_read_sz = 0;
57 SEC("fmod_ret/bpf_testmod_test_read")
58 int BPF_PROG(handle_fmod_ret,
59 struct file *file, struct kobject *kobj,
60 struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len)
62 fmod_ret_read_sz = len;
63 return 0; /* don't override the exit code */
66 char _license[] SEC("license") = "GPL";