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os_spy.c
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#include <signal.h>
#include <stdio.h>
#include <time.h>
#include <sys/resource.h>
#include <sys/sysinfo.h>
#include <sys/select.h>
#include <unistd.h>
#include <errno.h>
#include <asm/unistd.h>
#include <bpf/bpf.h>
#include <bpf/btf.h>
#include <argp.h>
#include <arpa/inet.h>
#include <bpf/libbpf.h>
#include <linux/perf_event.h>
#include <assert.h>
#include "env.h"
#include "proc_data.h"
#include "cpu_event.h"
#include "io_event.h"
#include "net_event.h"
#include "mm_event.h"
#include "blazesym.h"
#include "hash_table.h"
#include "cpu_stats.skel.h"
#include "io_stats.skel.h"
#include "mm_stats.skel.h"
#include "mm_leak.skel.h"
#include "net_stats.skel.h"
/*----------------------共同部分---------------------------------*/
static const struct argp argp = {
argp_options,
parse_arg,
NULL,
argp_args_doc
};
static struct env env_data = {
.interval = 1,
.cpu_data = false,
.io_data = false,
.mm_data = false,
.net_data = false,
.visualize = false,
.std_output = true
};
#define MAX_CSV_FILES 10
static char csv_folder_path[MAX_PATH_LEN];
static char visualize_proc_path[MAX_PATH_LEN];// 把不适合放到promthes的都放到这个文件夹
volatile sig_atomic_t stop = 0;
static time_t boot_time; // 系统启动时间
static u32 zero = 0;
static u32 one = 1;
static int create_perf_event(u32 period_ms);
static struct bpf_link* attach_perf_event_to_program(struct bpf_program *prog, u32 period_ms);
static int init_time();// 初始化系统当前时间
static int get_proc_path();
// 信号处理函数，用于优雅地退出程序
void handle_sigint(int sig) {
stop = 1;
}
/*----------------------网络部分----------------------------------*/
// 和可视化有关的
const char *net_csv_names[] = {
"net_latency.csv",
"tcprtt.csv",
"tcptop.csv",
"tcpretrans.csv"
};
FILE *net_csv_files[MAX_CSV_FILES];
struct ring_buffer *rb_net_latency = NULL;
struct ring_buffer *rb_tcprtt = NULL;
struct ring_buffer *rb_tcptop = NULL;
struct ring_buffer *rb_tcpretrans = NULL;
struct net_stats_bpf *net_skel = NULL;
struct sysinfo sys_data;
struct bpf_link *link_to_tcprtt = NULL;
static int net_create_csv();
static int handle_net_latency_event(void *ctx, void *data, size_t data_sz);
static int handle_usr_tcprtt_event(void *ctx, void *data, size_t data_sz);
static int handle_usr_tcptop_event(void *ctx, void *data, size_t data_sz);
static int handle_usr_tcpretrans_event(void *ctx, void *data, size_t data_sz);
static bool fentry_try_attach(int id);
static bool fentry_can_attach(const char* name, const char* mod);
static int attach_net_skel(struct net_stats_bpf *skel);
void net_resource_clean();
static int net_ring_buffer_poll();
enum {
TCP_ESTABLISHED = 1,
TCP_SYN_SENT = 2,
TCP_SYN_RECV = 3,
TCP_FIN_WAIT1 = 4,
TCP_FIN_WAIT2 = 5,
TCP_TIME_WAIT = 6,
TCP_CLOSE = 7,
TCP_CLOSE_WAIT = 8,
TCP_LAST_ACK = 9,
TCP_LISTEN = 10,
TCP_CLOSING = 11,
TCP_NEW_SYN_RECV = 12,
TCP_MAX_STATES = 13,
};
/*--------------------------io部分-----------------------------------*/
#define MAX_IO_RESULTS 256
struct ring_buffer *rb_io_task_stats, *rb_io_process_stats, *rb_io_wait;
struct io_stats_bpf *io_skel = NULL;
struct bpf_link *link_io_wait = NULL;
DiskStatsContext* context = NULL;
DiskStats current[MAX_DEVICES];
// 和可视化有关的
const char *io_csv_names[] = {
"io_task_stats.csv",
"io_process_stats.csv",
"iowait_perf.csv",
};
FILE *io_csv_files[MAX_CSV_FILES];
static int io_create_csv();
static int handle_io_task_stats_event(void *ctx,void *data, size_t data_sz);
static int handle_io_process_stats_event(void *ctx,void *data, size_t data_sz);
static int handle_iowait_perf_event(void *ctx,void *data, size_t data_sz);
static int attach_io_skel(struct io_stats_bpf *skel);
int io_initialize_monitoring(unsigned int interval);
static void io_resource_clean();
static int io_ring_buffer_poll();
/*----------------------------mm部分--------------------------------------*/
static u64 trace_pid = 0;
int leak_allocs_fd;
int leak_stack_traces_fd;
FILE *mm_file = NULL;
// 和可视化有关的
const char *mm_csv_names[] = {
"oom_event.csv",
"task_mm_stats.csv",
"process_mm_stats.csv",
};
const char mm_stack[] = "mm_alloc";
FILE *mm_alloc_stack = NULL;
int get_mm_txt();
FILE *mm_csv_files[MAX_CSV_FILES];
static int mm_create_csv();
static struct blaze_symbolizer *mm_symbolizer;
static struct allocation *allocs;
struct ring_buffer *rb_oom, *rb_task_mm, *rb_process_mm;
struct mm_leak_bpf *leak_skel = NULL;
struct mm_stats_bpf *mm_skel = NULL;
static u64 *stack;
static int attach_leak_uprobes(struct mm_leak_bpf *skel);
static int print_outstanding_allocs(int allocs_fd, int stack_traces_fd);
static int print_stack_frames(struct allocation *allocs, u64 nr_allocs, int stack_traces_fd);
static int handle_oom_event(void *ctx,void *data, size_t data_sz);
static int handle_task_mm_stats_event(void *ctx,void *data, size_t data_sz);
static int handle_process_mm_stats_event(void *ctx,void *data, size_t data_sz);
static int attach_leak_skel(struct mm_leak_bpf *skel);
static int attach_mm_stats_skel(struct mm_stats_bpf *skel);
static int mm_ring_buffer_poll();
static void mm_resource_clean();
/*---------------------------cpu部分---------------------------------------*/
struct ring_buffer *rb_cpu = NULL;
struct ring_buffer *rb_task = NULL;
struct ring_buffer *rb_process = NULL;
struct ring_buffer *rb_runqlat = NULL;
struct ring_buffer *rb_backtrace = NULL;
struct cpu_stats_bpf *cpu_skel = NULL;
const char *cpu_csv_names[] = {
"cpu_usage.csv",
"task_usage.csv",
"process_stat.csv",
"runqlat.csv",
};
const char cpu_stack[] = "task_backtrace";
FILE *cpu_task_stack = NULL;
int get_cpu_txt();
FILE *cpu_csv_files[MAX_CSV_FILES];
static int cpu_create_csv();
static struct blaze_symbolizer *cpu_symbolizer;
static int init_cpu_symbolizer();
static void free_cpu_symbolizer();
static void cpu_print_frame(const char *name, uintptr_t input_addr, uintptr_t addr, uint64_t offset, const blaze_symbolize_code_info* code_info);
static void cpu_show_stack_trace(uint64_t *stack, int stack_sz, pid_t pid);
static int handle_usr_task_cpu_backtrace_event(void *ctx,void *data, size_t data_sz);
static int handle_cpu_usage_event(void *ctx,void *data, size_t data_sz);
static int handle_usr_task_usage_event(void *ctx,void *data, size_t data_sz);
static int handle_use_process_stat_event(void *ctx,void *data, size_t data_sz);
static int handle_usr_runqlat_event(void *ctx,void *data, size_t data_sz);
static int attach_cpu_skel(struct cpu_stats_bpf *skel);
static int cpu_ring_buffer_poll();
static void cpu_resource_clean();
int main(int argc, char **argv){
int ret;
// Parse command line arguments
argp_parse(&argp, argc, argv, 0, NULL, &env_data);
// 注册信号处理器，捕获Ctrl-C (SIGINT)
signal(SIGINT, handle_sigint);
signal(SIGTERM, handle_sigint);
ret = init_time();
if(ret != 0)
goto cleanup;
ret = get_proc_path();
if(ret != 0)
goto cleanup;
if(env_data.cpu_data){
if(env_data.visualize){
ret = cpu_create_csv();
if(ret != 0)
goto cleanup;
ret = get_cpu_txt();
if(ret != 0)
goto cleanup;
}
ret = attach_cpu_skel(cpu_skel);
if(ret != 0)
goto cleanup;
}
if(env_data.net_data){
if(env_data.visualize){
ret = net_create_csv();
if(ret != 0)
goto cleanup;
}
net_skel = net_stats_bpf__open();
if(!net_skel){
fprintf(stderr, "failed to open net_stats skel\n");
ret = 1;
goto cleanup;
}
ret = attach_net_skel(net_skel);
if(ret != 0)
goto cleanup;
}
if(env_data.io_data){
if(env_data.visualize){
ret = io_create_csv();
if(ret != 0)
goto cleanup;
}
io_skel = io_stats_bpf__open();
if(!io_skel){
fprintf(stderr, "failed to open io_stats skel\n");
ret = 1;
goto cleanup;
}
ret = attach_io_skel(io_skel);
if(ret != 0)
goto cleanup;
if (io_initialize_monitoring(1) != 0) {
fprintf(stderr, "Initialization failed.\n");
ret = 1;
goto cleanup;
}
}
if(env_data.mm_data){
mm_file = open_meminfo();
if(env_data.visualize){
ret = mm_create_csv();
if(ret != 0)
goto cleanup;
ret = get_mm_txt();
if(ret != 0)
goto cleanup;
}
leak_skel = mm_leak_bpf__open();
if(!leak_skel){
fprintf(stderr, "failed to open mm_leak skel\n");
ret = 1;
goto cleanup;
}
mm_skel = mm_stats_bpf__open();
if(!mm_skel){
fprintf(stderr, "failed to open mm_stats skel\n");
ret = 1;
goto cleanup;
}
ret = attach_leak_skel(leak_skel);
if(ret != 0)
goto cleanup;
ret = attach_mm_stats_skel(mm_skel);
if(ret != 0)
goto cleanup;
}
while(stop == 0){
if(env_data.net_data){
if (monitor_network(env_data.visualize) != 0) {
fprintf(stderr, "An error occurred during network monitoring.\n");
}
ret = net_ring_buffer_poll();
if(ret != 0)
goto cleanup;
}
if(env_data.io_data){
ret = io_ring_buffer_poll();
if(ret != 0)
goto cleanup;
if (process_disk_stats(context, current, &context->device_count_prev, 1) != 0) {
goto cleanup;
}
}
if(env_data.mm_data){
read_meminfo(mm_file);
print_outstanding_allocs(leak_allocs_fd,leak_stack_traces_fd);
ret = mm_ring_buffer_poll();
if(ret < 0)
goto cleanup;
}
if(env_data.cpu_data){
ret = cpu_ring_buffer_poll();
if(ret < 0)
goto cleanup;
}
}
cleanup:
cpu_resource_clean();
net_resource_clean();
io_resource_clean();
mm_resource_clean();
return ret;
}
/*-----------------------------共同部分---------------------------------------*/
static int get_proc_path() {
// 获取当前工作目录
if (getcwd(visualize_proc_path, sizeof(visualize_proc_path)) == NULL) {
perror("getcwd failed");
return 1;
}
// 拼接 "visualize/proc" 文件夹到路径
strncat(visualize_proc_path, "/visualize/proc", sizeof(visualize_proc_path) - strlen(visualize_proc_path) - 1);
// 检查 "visualize/proc" 文件夹是否存在
struct stat st;
if (stat(visualize_proc_path, &st) == 0) {
if (!S_ISDIR(st.st_mode)) {
fprintf(stderr, "Error: %s exists but is not a directory\n", visualize_proc_path);
return 1;
}
} else {
// 文件夹不存在，尝试创建
if (mkdir(visualize_proc_path, 0755) != 0) {
perror("mkdir failed");
return 1;
}
}
return 0;
}
static int create_perf_event(u32 period_ms) {
struct perf_event_attr attr = {
.type = PERF_TYPE_SOFTWARE, // 使用软件事件类型
.config = PERF_COUNT_SW_CPU_CLOCK, // 使用 CPU 时钟作为触发源
.size = sizeof(struct perf_event_attr),
.sample_period = period_ms * 1000000ULL, // 设置为毫秒级的间隔
.freq = 0, // 使用固定间隔，而非频率
.wakeup_events = 1, // 每次触发事件
};
// 对所有 CPU 和进程创建事件
int fd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, 0);
if (fd < 0) {
perror("perf_event_open");
return -1;
}
return fd;
}
static struct bpf_link* attach_perf_event_to_program(struct bpf_program *prog, u32 period_ms) {
// 创建 perf event
int perf_fd = create_perf_event(period_ms);
if (perf_fd < 0) {
fprintf(stderr, "Failed to create perf_event\n");
return NULL;
}
// 将 perf event 附加到指定的 BPF 程序
struct bpf_link *link = bpf_program__attach_perf_event(prog, perf_fd);
if (!link) {
fprintf(stderr, "Failed to attach perf_event to BPF program: %s\n", strerror(errno));
close(perf_fd);
return NULL;
}
return link;
}
static int init_time(){
if(sysinfo(&sys_data) != 0){
perror("sysinfo get failed\n");
return 1;
}
time_t now = time(NULL);
if (now == ((time_t) -1)) {
perror("current time get failed\n");
return 1;
}
boot_time = now - sys_data.uptime;
return 0;
}
/*-----------------------------------------网络部分----------------------------------*/
static int net_create_csv(){
int ret;
int num_csv_names = sizeof(net_csv_names) / sizeof(net_csv_names[0]);
for(int i=0;i<MAX_CSV_FILES;i++)
net_csv_files[i] = NULL;
// 获取当前工作目录
if (getcwd(csv_folder_path, sizeof(csv_folder_path)) == NULL) {
perror("getcwd failed");
return 1;
}
// 调用 visual_create_run_file 函数
if (visual_create_run_file(csv_folder_path, net_csv_names, num_csv_names, net_csv_files) != 0) {
fprintf(stderr, "Failed to create run folder and CSV files\n");
return 1;
}
return 0;
}
static int attach_net_skel(struct net_stats_bpf *skel){
int ret;
if (fentry_can_attach("tcp_v4_connect", NULL)) {
bpf_program__set_attach_target(skel->progs.fentry_tcp_v4_connect,0,"tcp_v4_connect");
bpf_program__set_attach_target(skel->progs.fentry_tcp_v6_connect,0,"tcp_v6_connect");
bpf_program__set_attach_target(skel->progs.fentry_tcp_rcv_state_process,0,"tcp_rcv_state_process");
bpf_program__set_autoload(skel->progs.fentry_tcp_v4_connect,false);
bpf_program__set_autoload(skel->progs.fentry_tcp_v6_connect,false);
bpf_program__set_autoload(skel->progs.fentry_tcp_rcv_state_process,false);
}
else{
bpf_program__set_autoload(skel->progs.fentry_tcp_v4_connect,false);
bpf_program__set_autoload(skel->progs.fentry_tcp_v6_connect,false);
bpf_program__set_autoload(skel->progs.fentry_tcp_rcv_state_process,false);
}
ret = net_stats_bpf__load(skel);
if(ret){
fprintf(stderr, "failed to load net_stats skel\n");
return ret;
}
ret = net_stats_bpf__attach(skel);
if(ret){
fprintf(stderr, "failed to attach net_stats bpf program(s)\n");
return ret;
}
link_to_tcprtt = attach_perf_event_to_program(skel->progs.handle_tcprtt_event,1000);
if(!link_to_tcprtt){
return -1;
}
skel->links.handle_tcprtt_event = link_to_tcprtt;
rb_net_latency = ring_buffer__new(bpf_map__fd(skel->maps.net_latency_buffer),handle_net_latency_event,NULL,NULL);
rb_tcprtt = ring_buffer__new(bpf_map__fd(skel->maps.tcprtt_buffer),handle_usr_tcprtt_event,NULL,NULL);
rb_tcptop = ring_buffer__new(bpf_map__fd(skel->maps.tcptop_buffer),handle_usr_tcptop_event,NULL,NULL);
rb_tcpretrans = ring_buffer__new(bpf_map__fd(skel->maps.tcpretrans_buffer),handle_usr_tcpretrans_event,NULL,NULL);
return 0;
}
static int net_ring_buffer_poll(){
int ret;
ret = ring_buffer__poll(rb_net_latency,200);
if(ret < 0)
{
fprintf(stderr, "Error polling net latency ring buffer: %d\n", ret);
return ret;
}
ret = ring_buffer__poll(rb_tcprtt,200);
if(ret < 0)
{
fprintf(stderr, "Error polling tcprtt ring buffer: %d\n", ret);
return ret;
}
ret = ring_buffer__poll(rb_tcptop,200);
if(ret < 0)
{
fprintf(stderr, "Error polling tcptop ring buffer: %d\n", ret);
return ret;
}
ret = ring_buffer__poll(rb_tcpretrans,200);
if(ret < 0)
{
fprintf(stderr, "Error polling tcpretrans ring buffer: %d\n", ret);
return ret;
}
return 0;
}
void net_resource_clean(){
if(rb_net_latency)
ring_buffer__free(rb_net_latency);
if(rb_tcprtt)
ring_buffer__free(rb_tcprtt);
if(rb_tcptop)
ring_buffer__free(rb_tcptop);
if(rb_tcpretrans)
ring_buffer__free(rb_tcpretrans);
for(int i=0;i<MAX_CSV_FILES;i++){
if(net_csv_files[i] != NULL)
fclose(net_csv_files[i]);
else
break;
}
close_proc_net_csv_file();
net_stats_bpf__destroy(net_skel);
}
static int handle_net_latency_event(void *ctx, void *data, size_t data_sz){
// 检查数据大小是否符合结构体大小
if (data_sz < sizeof(struct tcp_net_latency)) {
fprintf(stderr, "Received data size (%zu) is smaller than expected (%zu)\n", data_sz, sizeof(struct tcp_net_latency));
return 0; // 返回 0 表示继续处理其他事件
}
// 将数据指针转换为结构体指针
struct tcp_net_latency *event = (struct tcp_net_latency *)data;
// 定义字符串缓冲区用于存储 IP 地址
char saddr_str[INET6_ADDRSTRLEN] = {0};
char daddr_str[INET6_ADDRSTRLEN] = {0};
// 根据地址族类型转换源地址和目标地址
if (event->af == AF_INET) {
// IPv4 地址
struct in_addr saddr, daddr;
saddr.s_addr = event->src_addr.saddr_v4;
daddr.s_addr = event->dst_addr.daddr_v4;
// 将网络字节序的地址转换为字符串
if (inet_ntop(AF_INET, &saddr, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv4 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str));
}
if (inet_ntop(AF_INET, &daddr, daddr_str, sizeof(daddr_str)) == NULL) {
perror("inet_ntop IPv4 destination address failed");
strncpy(daddr_str, "Unknown", sizeof(daddr_str));
}
}
else if (event->af == AF_INET6) {
// IPv6 地址
if (inet_ntop(AF_INET6, event->src_addr.saddr_v6, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv6 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str));
}
if (inet_ntop(AF_INET6, event->dst_addr.daddr_v6, daddr_str, sizeof(daddr_str)) == NULL) {
perror("inet_ntop IPv6 destination address failed");
strncpy(daddr_str, "Unknown", sizeof(daddr_str));
}
}
else {
// 未知的地址族
strncpy(saddr_str, "Unknown AF", sizeof(saddr_str));
strncpy(daddr_str, "Unknown AF", sizeof(daddr_str));
}
// 格式化时间戳
// 将纳秒转换为秒和纳秒
time_t relative_sec = event->ts / 1000000000;
long relative_nsec = event->ts % 1000000000;
// 计算绝对时间
time_t absolute_sec = boot_time + relative_sec;
long absolute_nsec = relative_nsec;
// 将绝对时间转换为本地时间
struct tm tm_info;
if (localtime_r(&absolute_sec, &tm_info) == NULL) {
perror("localtime_r failed");
return 0;
}
// 格式化时间字符串
char time_buf[64];
if (strftime(time_buf, sizeof(time_buf), "%Y-%m-%d %H:%M:%S", &tm_info) == 0) {
fprintf(stderr, "strftime returned 0");
strncpy(time_buf, "Unknown Time", sizeof(time_buf));
}
if(env_data.std_output){
printf("[%s.%09ld] TGID: %u Comm: %s | TCP Connect Delay: %llu us | %s:%u -> %s:%u\n",
time_buf,
absolute_nsec,
event->tgid,
event->comm,
(unsigned long long)event->delta,
saddr_str,
ntohs(event->lport),
daddr_str,
ntohs(event->dport));
}
// 打印事件信息
// printf("[%s.%09ld] TGID: %u Comm: %s | TCP Connect Delay: %llu us | %s:%u -> %s:%u\n",
// time_buf,
// absolute_nsec,
// event->tgid,
// event->comm,
// (unsigned long long)event->delta,
// saddr_str,
// ntohs(event->lport),
// daddr_str,
// ntohs(event->dport));
// 将事件信息写入 CSV 文件
if(!env_data.visualize)
return 0;
if (!net_csv_files[0]) {
fprintf(stderr, "net_csv_files[0] is NULL. Cannot write to CSV\n");
return -1;
}
int fd = fileno(net_csv_files[0]);
if (fd == -1) {
perror("fileno failed");
return -1;
}
struct stat st;
if (fstat(fd, &st) == -1) {
perror("fstat failed");
return -1;
}
if (st.st_size == 0) {
fprintf(net_csv_files[0], "Timestamp,PID,Comm,Delay_us\n");
fflush(net_csv_files[0]);
}
fprintf(net_csv_files[0], "%s.%09ld,%u,%.16s,%llu\n",
time_buf,
absolute_nsec,
event->tgid,
event->comm,
(unsigned long long)event->delta);
return 0; // 返回 0 表示继续处理其他事件
}
static int handle_usr_tcprtt_event(void *ctx, void *data, size_t data_sz){
struct tcprtt_perf_data *event = (struct tcprtt_perf_data *)data;
if(env_data.std_output){
for(int i=0;i<8;i++){
switch(i){
case 0:
printf("wait less than 1ms: %u\n",event->data[i]);
continue;
case 1:
printf("wait less than 4ms: %u\n",event->data[i]);
continue;
case 2:
printf("wait less than 16ms: %u\n",event->data[i]);
continue;
case 3:
printf("wait less than 32ms: %u\n",event->data[i]);
continue;
case 4:
printf("wait less than 64ms: %u\n",event->data[i]);
continue;
case 5:
printf("wait less than 128ms: %u\n",event->data[i]);
continue;
case 6:
printf("wait less than 256ms: %u\n",event->data[i]);
continue;
case 7:
printf("wait more than 256ms: %u\n",event->data[i]);
continue;
default:
continue;
}
}
}
printf("\n");
// 写入到 CSV 文件
if(!env_data.visualize)
return 0;
if (net_csv_files[1]) {
// 获取文件描述符以检查文件大小
int fd = fileno(net_csv_files[1]);
if (fd == -1) {
perror("fileno failed for net_csv_files[1]");
return -1;
}
struct stat st;
if (fstat(fd, &st) == -1) {
perror("fstat failed for net_csv_files[1]");
return -1;
}
// 如果文件为空，写入表头
if (st.st_size == 0) {
fprintf(net_csv_files[1],
"1ms,4ms,16ms,32ms,64ms,128ms,256ms,256ms+\n");
fflush(net_csv_files[1]);
}
// 写入事件数据
fprintf(net_csv_files[1], "%u,%u,%u,%u,%u,%u,%u,%u\n",
event->data[0], event->data[1], event->data[2],
event->data[3], event->data[4], event->data[5],
event->data[6], event->data[7]);
} else {
fprintf(stderr, "net_csv_files[1] is NULL. Cannot write to CSV\n");
}
return 0;
}
static int handle_usr_tcptop_event(void *ctx, void *data, size_t data_sz)
{
// 检查数据大小是否符合预期
if (data_sz < sizeof(struct tcp_top_perf_data)) {
fprintf(stderr, "Received data size (%zu) is smaller than expected (%zu)\n", data_sz, sizeof(struct tcp_top_perf_data));
return 0;
}
// 将数据指针转换为结构体指针
struct tcp_top_perf_data *event = (struct tcp_top_perf_data *)data;
// 定义缓冲区用于存储IP地址字符串
char saddr_str[INET6_ADDRSTRLEN] = {0};
char daddr_str[INET6_ADDRSTRLEN] = {0};
// 根据地址族转换源地址
if (event->af == AF_INET) {
struct in_addr saddr;
saddr.s_addr = event->src_addr.saddr_v4;
if (inet_ntop(AF_INET, &saddr, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv4 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
}
else if (event->af == AF_INET6) {
if (inet_ntop(AF_INET6, event->src_addr.saddr_v6, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv6 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
}
else {
strncpy(saddr_str, "Unknown AF", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
// 根据地址族转换目标地址
if (event->af == AF_INET) {
struct in_addr daddr;
daddr.s_addr = event->dst_addr.daddr_v4;
if (inet_ntop(AF_INET, &daddr, daddr_str, sizeof(daddr_str)) == NULL) {
perror("inet_ntop IPv4 destination address failed");
strncpy(daddr_str, "Unknown", sizeof(daddr_str)-1);
daddr_str[sizeof(daddr_str)-1] = '\0';
}
}
else if (event->af == AF_INET6) {
if (inet_ntop(AF_INET6, event->dst_addr.daddr_v6, daddr_str, sizeof(daddr_str)) == NULL) {
perror("inet_ntop IPv6 destination address failed");
strncpy(daddr_str, "Unknown", sizeof(daddr_str)-1);
daddr_str[sizeof(daddr_str)-1] = '\0';
}
}
else {
strncpy(daddr_str, "Unknown AF", sizeof(daddr_str)-1);
daddr_str[sizeof(daddr_str)-1] = '\0';
}
// 将端口号从网络字节序转换为主机字节序
u16 lport = ntohs(event->lport);
u16 dport = ntohs(event->dport);
// 获取当前时间戳
time_t now = time(NULL);
struct tm tm_info;
char time_buf[64];
localtime_r(&now, &tm_info);
strftime(time_buf, sizeof(time_buf), "%Y-%m-%d %H:%M:%S", &tm_info);
// 打印事件信息
if(env_data.std_output){
printf("[%s] PID: %u | Comm: %s | Sent: %llu bytes | Received: %llu bytes | %s:%u -> %s:%u\n",
time_buf,
event->pid,
event->comm,
(unsigned long long)event->send,
(unsigned long long)event->recv,
saddr_str,
lport,
daddr_str,
dport);
}
if(!env_data.visualize)
return 0;
// 写入到 CSV 文件
if (net_csv_files[2]) {
// 获取文件描述符以检查文件大小
int fd = fileno(net_csv_files[2]);
if (fd == -1) {
perror("fileno failed for net_csv_files[2]");
return -1;
}
struct stat st;
if (fstat(fd, &st) == -1) {
perror("fstat failed for net_csv_files[2]");
return -1;
}
// 如果文件为空，写入表头
if (st.st_size == 0) {
// fprintf(net_csv_files[2],
// "Timestamp,PID,Comm,Source_IP,Source_Port,Destination_IP,Destination_Port,Sent_Bytes,Received_Bytes\n");
fprintf(net_csv_files[2],
"Timestamp,PID,Comm,Sent_Bytes,Received_Bytes\n");
fflush(net_csv_files[2]);
}
fprintf(net_csv_files[2], "%s,%u,%s,%llu,%llu\n",
time_buf,
event->pid,
event->comm,
(unsigned long long)event->send,
(unsigned long long)event->recv);
} else {
fprintf(stderr, "net_csv_files[2] is NULL. Cannot write to CSV\n");
}
return 0;
}
const char* tcp_state_to_string(u64 state) {
switch (state) {
case TCP_ESTABLISHED:
return "ESTABLISHED";
case TCP_SYN_SENT:
return "SYN_SENT";
case TCP_SYN_RECV:
return "SYN_RECV";
case TCP_FIN_WAIT1:
return "FIN_WAIT1";
case TCP_FIN_WAIT2:
return "FIN_WAIT2";
case TCP_TIME_WAIT:
return "TIME_WAIT";
case TCP_CLOSE:
return "CLOSE";
case TCP_CLOSE_WAIT:
return "CLOSE_WAIT";
case TCP_LAST_ACK:
return "LAST_ACK";
case TCP_LISTEN:
return "LISTEN";
case TCP_CLOSING:
return "CLOSING";
case TCP_NEW_SYN_RECV:
return "NEW_SYN_RECV";
case TCP_MAX_STATES:
return "MAX_STATES";
default:
return "UNKNOWN";
}
}
static int handle_usr_tcpretrans_event(void *ctx, void *data, size_t data_sz) {
// 检查数据大小是否符合预期
if (data_sz < sizeof(struct tcp_resubmit)) {
fprintf(stderr, "Received data size (%zu) is smaller than expected (%zu)\n", data_sz, sizeof(struct tcp_resubmit));
return 0;
}
// 将数据指针转换为结构体指针
struct tcp_resubmit *event = (struct tcp_resubmit *)data;
// 定义缓冲区用于存储IP地址字符串
char saddr_str[INET6_ADDRSTRLEN] = {0};
char daddr_str[INET6_ADDRSTRLEN] = {0};
// 根据地址族转换源地址
if (event->af == AF_INET) {
struct in_addr saddr;
saddr.s_addr = event->src_addr.saddr_v4;
if (inet_ntop(AF_INET, &saddr, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv4 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
}
else if (event->af == AF_INET6) {
if (inet_ntop(AF_INET6, event->src_addr.saddr_v6, saddr_str, sizeof(saddr_str)) == NULL) {
perror("inet_ntop IPv6 source address failed");
strncpy(saddr_str, "Unknown", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
}
else {
strncpy(saddr_str, "Unknown AF", sizeof(saddr_str)-1);
saddr_str[sizeof(saddr_str)-1] = '\0';
}
// 根据地址族转换目标地址
if (event->af == AF_INET) {
struct in_addr daddr;
daddr.s_addr = event->dst_addr.daddr_v4;
if (inet_ntop(AF_INET, &daddr, daddr_str, sizeof(daddr_str)) == NULL) {