cregit-Linux how code gets into the kernel

Release 4.14 samples/bpf/trace_output_kern.c

Directory: samples/bpf
#include <linux/ptrace.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"

struct bpf_map_def SEC("maps") my_map = {
	.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
	.key_size = sizeof(int),
	.value_size = sizeof(u32),
	.max_entries = 2,
};

SEC("kprobe/sys_write")

int bpf_prog1(struct pt_regs *ctx) { struct S { u64 pid; u64 cookie; } data; data.pid = bpf_get_current_pid_tgid(); data.cookie = 0x12345678; bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexei Starovoitov56100.00%1100.00%
Total56100.00%1100.00%

char _license[] SEC("license") = "GPL"; u32 _version SEC("version") = LINUX_VERSION_CODE;

Overall Contributors

PersonTokensPropCommitsCommitProp
Alexei Starovoitov127100.00%1100.00%
Total127100.00%1100.00%
Directory: samples/bpf
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