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add chatgpt doc

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yunwei37
2022-12-06 16:16:45 +08:00
parent c572e7f511
commit 8bb5d23a40
5 changed files with 1936 additions and 22 deletions
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15
6-sigsnoop/sigsnoop.bpf.c
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@@ -1,10 +1,17 @@
// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
/* Copyright (c) 2021~2022 Hengqi Chen */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include "sigsnoop.h"
#include <bpf/bpf_tracing.h>
#define MAX_ENTRIES 10240
#define TASK_COMM_LEN 16
struct event {
unsigned int pid;
unsigned int tpid;
int sig;
int ret;
char comm[TASK_COMM_LEN];
};
struct {
__uint(type, BPF_MAP_TYPE_HASH);
@@ -42,7 +49,7 @@ static int probe_exit(void *ctx, int ret)
eventp->ret = ret;
bpf_printk("PID %d (%s) sent signal %d to PID %d, ret = %d",
eventp->pid, eventp->comm, eventp->sig, eventp->tpid, eventp->ret);
eventp->pid, eventp->comm, eventp->sig, eventp->tpid, ret);
cleanup:
bpf_map_delete_elem(&values, &tid);