| 1 | #include "vmlinux.h"
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| 2 | #include <linux/version.h>
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| 3 | #include <bpf/bpf_helpers.h>
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| 4 |
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| 5 | struct {
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| 6 | __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
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| 7 | __uint(key_size, sizeof(int));
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| 8 | __uint(value_size, sizeof(u32));
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| 9 | __uint(max_entries, 2);
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| 10 | } my_map SEC(".maps");
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| 11 |
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| 12 | SEC("ksyscall/write")
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| 13 | int bpf_prog1(struct pt_regs *ctx)
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| 14 | {
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| 15 | struct S {
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| 16 | u64 pid;
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| 17 | u64 cookie;
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| 18 | } data;
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| 19 |
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| 20 | data.pid = bpf_get_current_pid_tgid();
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| 21 | data.cookie = 0x12345678;
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| 22 |
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| 23 | bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));
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| 24 |
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| 25 | return 0;
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| 26 | }
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| 27 |
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| 28 | char _license[] SEC("license") = "GPL";
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| 29 | u32 _version SEC("version") = LINUX_VERSION_CODE;
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