53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2017 Facebook
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#include <linux/ptrace.h>
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#include <linux/bpf.h>
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#include "bpf_helpers.h"
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__uint(max_entries, 4);
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__type(key, int);
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__type(value, int);
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} results_map SEC(".maps");
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SEC("kprobe/sys_nanosleep")
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int handle_sys_nanosleep_entry(struct pt_regs *ctx)
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{
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const int key = 0, value = 1;
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bpf_map_update_elem(&results_map, &key, &value, 0);
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return 0;
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}
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SEC("kretprobe/sys_nanosleep")
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int handle_sys_getpid_return(struct pt_regs *ctx)
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{
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const int key = 1, value = 2;
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bpf_map_update_elem(&results_map, &key, &value, 0);
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return 0;
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}
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SEC("uprobe/trigger_func")
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int handle_uprobe_entry(struct pt_regs *ctx)
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{
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const int key = 2, value = 3;
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bpf_map_update_elem(&results_map, &key, &value, 0);
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return 0;
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}
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SEC("uretprobe/trigger_func")
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int handle_uprobe_return(struct pt_regs *ctx)
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{
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const int key = 3, value = 4;
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bpf_map_update_elem(&results_map, &key, &value, 0);
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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__u32 _version SEC("version") = 1;
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