{"id":37820,"date":"2025-04-22T21:38:58","date_gmt":"2025-04-22T13:38:58","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=37820"},"modified":"2025-04-22T21:38:58","modified_gmt":"2025-04-22T13:38:58","slug":"ebpf%e4%b8%ad%e7%9a%84ebpf_1","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/37820.html","title":{"rendered":"Ebpf\u4e2d\u7684eBPF_1"},"content":{"rendered":"

\n

\"Ebpf\u4e2d\u7684eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u505a\u4e86\u4ec0\u4e48\"<\/p>\n<\/p>\n

\u4e00\u3001<\/h2>\n

\u5728\u6df1\u5165\u63a2\u8ba8eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u4e4b\u524d\uff0c\u6709\u5fc5\u8981\u4e86\u89e3\u4e00\u4e0bEbpf\uff08\u6269\u5c55\u4f2f\u514b\u5229\u5305\u8fc7\u6ee4\u5668\uff09\u7684\u80cc\u666f\u548c\u57fa\u672c\u6982\u5ff5\u3002Ebpf\u662f\u4e00\u79cd\u5185\u6838\u6280\u672f\uff0c\u5141\u8bb8\u7528\u6237\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u8fd0\u884c\u6c99\u76d2\u7a0b\u5e8f\uff0c\u800c\u65e0\u9700\u4fee\u6539\u5185\u6838\u6e90\u4ee3\u7801\u6216\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u3002\u8fd9\u79cd\u6280\u672f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7f51\u7edc\u8fc7\u6ee4\u3001\u6027\u80fd\u5206\u6790\u3001\u5b89\u5168\u76d1\u63a7\u7b49\u9886\u57df\u3002<\/p>\n

\u4e8c\u3001eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u7684\u5b9a\u4e49\u548c\u4f5c\u7528<\/h2>\n

1. \u5b8f\u7684\u5b9a\u4e49<\/h2>\n

`eBPF_SYSPROCLISTFMTARGDATATYPEARGC`\u5b8f\u662fEbpf\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u7528\u4e8e\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u5217\u8868\u3002\u8fd9\u4e2a\u5b8f\u7684\u5b8c\u6574\u540d\u79f0\u53cd\u6620\u4e86\u5b83\u7684\u529f\u80fd\uff1a\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u6570\u636e\u7c7b\u578b\u548c\u6570\u91cf\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5b8f\u63a5\u53d7\u4e00\u7cfb\u5217\u53c2\u6570\uff0c\u5305\u62ec\u7cfb\u7edf\u8c03\u7528\u53f7\u3001\u53c2\u6570\u4e2a\u6570\u4ee5\u53ca\u6bcf\u4e2a\u53c2\u6570\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5e76\u5c06\u5b83\u4eec\u683c\u5f0f\u5316\u4e3a\u4e00\u4e2a\u9002\u5408\u5728\u5185\u6838\u4e2d\u4f20\u9012\u548c\u5904\u7406\u7684\u7ed3\u6784\u3002<\/p>\n

2. \u5b8f\u7684\u4f5c\u7528<\/h2>\n
  • \u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a<\/strong>\uff1a\u901a\u8fc7\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\uff0c\u8fd9\u4e2a\u5b8f\u4f7f\u5f97Ebpf\u7a0b\u5e8f\u80fd\u591f\u89e3\u6790\u548c\u8bb0\u5f55\u7cfb\u7edf\u8c03\u7528\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u8fd9\u5bf9\u4e8e\u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u548c\u5206\u6790\u5de5\u5177\u975e\u5e38\u6709\u7528\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u7406\u89e3\u7a0b\u5e8f\u7684\u884c\u4e3a\u548c\u6027\u80fd\u74f6\u9888\u3002<\/li>\n
  • \u5b89\u5168\u7b56\u7565\u6267\u884c<\/strong>\uff1a\u5728\u5b89\u5168\u76d1\u63a7\u548c\u7b56\u7565\u6267\u884c\u65b9\u9762\uff0c\u8fd9\u4e2a\u5b8f\u5141\u8bb8Ebpf\u7a0b\u5e8f\u68c0\u67e5\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u662f\u5426\u7b26\u5408\u5b89\u5168\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u68c0\u6d4b\u548c\u9632\u6b62\u6076\u610f\u8f6f\u4ef6\u5229\u7528\u7279\u5b9a\u7cfb\u7edf\u8c03\u7528\u8fdb\u884c\u975e\u6cd5\u64cd\u4f5c\u3002<\/li>\n
  • \u6027\u80fd\u4f18\u5316<\/strong>\uff1a\u901a\u8fc7\u5206\u6790\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\uff0c\u8fd9\u4e2a\u5b8f\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u627e\u5230\u6027\u80fd\u74f6\u9888\u5e76\u8fdb\u884c\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u7edf\u8ba1\u4e0d\u540c\u7cfb\u7edf\u8c03\u7528\u7684\u4f7f\u7528\u9891\u7387\u548c\u8017\u65f6\uff0c\u4ece\u800c\u9488\u5bf9\u6027\u5730\u8fdb\u884c\u4f18\u5316\u3002<\/li>\n

    \u4e09\u3001eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u5728Ebpf\u4e2d\u7684\u5e94\u7528<\/h2>\n

    1. \u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u5de5\u5177<\/h2>\n

    \u8bb8\u591a\u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u5de5\u5177\uff08\u5982strace\uff09\u4f7f\u7528eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u6765\u89e3\u6790\u548c\u663e\u793a\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u8ffd\u8e2aopen\u7cfb\u7edf\u8c03\u7528\uff1a<\/p>\n

    include \n

    include <\/p>\n

    include <\/p>\n

    SEC(“tracepoint\/syscalls\/sys_enter_open”)<\/p>\n

    int bpf_prog(void ctx)<\/p>\n

    long syscall_nr = PT_REGS_PARM1(ctx);<\/p>\n

    if (syscall_nr!= __NR_open)<\/p>\n

    return 0;<\/p>\n

    const char filename = (const char )PT_REGS_PARM2(ctx);<\/p>\n

    int flags = (int)PT_REGS_PARM3(ctx);<\/p>\n

    mode_t mode = (mode_t)PT_REGS_PARM4(ctx);<\/p>\n

    struct syscall_metadata meta = NULL;<\/p>\n

    eBPF_SYSPROCLISTFMTARGDATATYPEARGC(__NR_open, 3, meta, filename, flags, mode);<\/p>\n

    bpf_trace_printk(“open: filename=%s, flags=%d, mode=%o<\/p>\n

    filename, flags, mode);<\/p>\n

    return 0;<\/p>\n

    char _license[] SEC(“license”) = “GPL”;<\/p>\n

    \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cEbpf\u7a0b\u5e8f\u6302\u8f7d\u5230`tracepoint\/syscalls\/sys_enter_open`\u8ddf\u8e2a\u70b9\u4e0a\uff0c\u6bcf\u5f53\u6709\u8fdb\u7a0b\u8c03\u7528open\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u7a0b\u5e8f\u5c31\u4f1a\u88ab\u89e6\u53d1\u3002\u901a\u8fc7\u4f7f\u7528eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\uff0c\u7a0b\u5e8f\u80fd\u591f\u89e3\u6790\u5e76\u6253\u5370\u51faopen\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\uff0c\u5305\u62ec\u6587\u4ef6\u540d\u3001\u6807\u5fd7\u4f4d\u548c\u6a21\u5f0f\u3002<\/p>\n

    2. \u5b89\u5168\u76d1\u63a7\u548c\u7b56\u7565\u6267\u884c<\/h2>\n

    eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u4e5f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5b89\u5168\u76d1\u63a7\u548c\u7b56\u7565\u6267\u884c\u3002\u4f8b\u5982\uff0cFalco\u662f\u4e00\u4e2a\u4e91\u539f\u751f\u8fd0\u884c\u65f6\u5b89\u5168\u9879\u76ee\uff0c\u5b83\u4f7f\u7528Ebpf\u548c\u8fd9\u4e2a\u5b8f\u6765\u76d1\u63a7\u7cfb\u7edf\u8c03\u7528\uff0c\u68c0\u6d4b\u5e76\u9632\u8303\u5a01\u80c1\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5316\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5b89\u5168\u7b56\u7565\uff1a<\/p>\n

    include \n

    include <\/p>\n

    include <\/p>\n

    SEC(“kprobe\/__x64_sys_execve”)<\/p>\n

    int bpf_prog(void ctx)<\/p>\n

    const char filename = (const char )PT_REGS_PARM1(ctx);<\/p>\n

    char const argv = (char const )PT_REGS_PARM2(ctx);<\/p>\n

    char const envp = (char const )PT_REGS_PARM3(ctx);<\/p>\n

    struct syscall_metadata meta = NULL;<\/p>\n

    eBPF_SYSPROCLISTFMTARGDATATYPEARGC(__NR_execve, 3, meta, filename, argv, envp);<\/p>\n

    if (strstr(filename, “\/bin\/sh”)!= NULL && strstr(argv[0], “-c”)!= NULL) {<\/p>\n

    bpf_trace_printk(“Potential shell injection detected: %s<\/p>\n

    filename);<\/p>\n

    return -EPERM;<\/p>\n

    return 0;<\/p>\n

    char _license[] SEC(“license”) = “GPL”;<\/p>\n

    \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cEbpf\u7a0b\u5e8f\u6302\u8f7d\u5230`kprobe\/__x64_sys_execve`\u63a2\u6d4b\u70b9\u4e0a\uff0c\u6bcf\u5f53\u6709\u8fdb\u7a0b\u8c03\u7528execve\u7cfb\u7edf\u8c03\u7528\u65f6\uff0c\u7a0b\u5e8f\u5c31\u4f1a\u88ab\u89e6\u53d1\u3002\u901a\u8fc7\u4f7f\u7528eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\uff0c\u7a0b\u5e8f\u80fd\u591f\u89e3\u6790\u5e76\u68c0\u67e5execve\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\uff0c\u7279\u522b\u662f\u5f53\u6267\u884c\u7684\u6587\u4ef6\u662f`\/bin\/sh`\u4e14\u5e26\u6709`-c`\u9009\u9879\u65f6\uff0c\u8fd9\u53ef\u80fd\u8868\u793a\u5b58\u5728\u6f5c\u5728\u7684shell\u6ce8\u5165\u653b\u51fb\u3002\u5982\u679c\u68c0\u6d4b\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u7a0b\u5e8f\u4f1a\u8bb0\u5f55\u8b66\u544a\u4fe1\u606f\u5e76\u8fd4\u56de`-EPERM`\u62d2\u7edd\u6267\u884c\u3002<\/p>\n

    \u56db\u3001eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u7684\u6027\u80fd\u5f71\u54cd<\/h2>\n

    \u867d\u7136eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u4f46\u7531\u4e8e\u5176\u590d\u6742\u6027\uff0c\u4e5f\u53ef\u80fd\u5bf9\u7cfb\u7edf\u6027\u80fd\u4ea7\u751f\u4e00\u5b9a\u7684\u5f71\u54cd\u3002\u5728\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n

  • \u589e\u52a0\u7cfb\u7edf\u5f00\u9500<\/strong>\uff1a\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u9700\u8981\u989d\u5916\u7684CPU\u65f6\u95f4\u548c\u5185\u5b58\uff0c\u5c24\u5176\u662f\u5728\u9891\u7e41\u8c03\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u6574\u4f53\u6027\u80fd\u4e0b\u964d\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u6743\u8861\u529f\u80fd\u548c\u6027\u80fd\u4e4b\u95f4\u7684\u5e73\u8861\u3002<\/li>\n
  • \u5360\u7528\u66f4\u591a\u8d44\u6e90<\/strong>\uff1a\u5b8f\u7684\u4f7f\u7528\u53ef\u80fd\u5bfc\u81f4Ebpf\u7a0b\u5e8f\u5360\u7528\u66f4\u591a\u7684\u7cfb\u7edf\u8d44\u6e90\uff0c\u5305\u62ec\u5185\u5b58\u548cCPU\u65f6\u95f4\u3002\u5728\u8d44\u6e90\u53d7\u9650\u7684\u73af\u5883\u4e2d\uff0c\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u4ee5\u514d\u5f71\u54cd\u5176\u4ed6\u5173\u952e\u4efb\u52a1\u7684\u6267\u884c\u3002<\/li>\n

    eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u5728Ebpf\u4e2d\u626e\u6f14\u4e86\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u5f3a\u5927\u7684\u673a\u5236\u6765\u683c\u5f0f\u5316\u548c\u5904\u7406\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u3002\u901a\u8fc7\u8fd9\u4e2a\u5b8f\uff0cEbpf\u7a0b\u5e8f\u80fd\u591f\u5b9e\u73b0\u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u3001\u5b89\u5168\u76d1\u63a7\u548c\u7b56\u7565\u6267\u884c\u7b49\u590d\u6742\u529f\u80fd\u3002\u7531\u4e8e\u5176\u590d\u6742\u6027\uff0c\u5728\u4f7f\u7528\u65f6\u4e5f\u9700\u8981\u6ce8\u610f\u5bf9\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\u3002\u5408\u7406\u4f7f\u7528\u8fd9\u4e2a\u5b8f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u63a7\u5236\u7cfb\u7edf\u884c\u4e3a\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u4e00\u3001 \u5728\u6df1\u5165\u63a2\u8ba8eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u4e4b\u524d\uff0c\u6709\u5fc5\u8981\u4e86\u89e3\u4e00\u4e0bEbpf\uff08\u6269\u5c55\u4f2f\u514b\u5229\u5305\u8fc7\u6ee4\u5668\uff09\u7684\u80cc\u666f\u548c\u57fa\u672c\u6982\u5ff5\u3002Ebpf\u662f\u4e00\u79cd\u5185\u6838\u6280\u672f\uff0c\u5141\u8bb8\u7528\u6237\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u8fd0\u884c\u6c99\u76d2\u7a0b\u5e8f\uff0c\u800c\u65e0\u9700\u4fee\u6539\u5185\u6838\u6e90\u4ee3\u7801\u6216\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u3002\u8fd9\u79cd\u6280\u672f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7f51\u7edc\u8fc7\u6ee4\u3001\u6027\u80fd\u5206\u6790\u3001\u5b89\u5168\u76d1\u63a7\u7b49\u9886\u57df\u3002 \u4e8c\u3001eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u7684\u5b9a\u4e49\u548c\u4f5c\u7528 1. \u5b8f\u7684\u5b9a\u4e49 `eBPF_SYSPROCLISTFMTARGDATATYPEARGC`\u5b8f\u662fEbpf\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u7528\u4e8e\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u5217\u8868\u3002\u8fd9\u4e2a\u5b8f\u7684\u5b8c\u6574\u540d\u79f0\u53cd\u6620\u4e86\u5b83\u7684\u529f\u80fd\uff1a\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u6570\u636e\u7c7b\u578b\u548c\u6570\u91cf\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5b8f\u63a5\u53d7\u4e00\u7cfb\u5217\u53c2\u6570\uff0c\u5305\u62ec\u7cfb\u7edf\u8c03\u7528\u53f7\u3001\u53c2\u6570\u4e2a\u6570\u4ee5\u53ca\u6bcf\u4e2a\u53c2\u6570\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5e76\u5c06\u5b83\u4eec\u683c\u5f0f\u5316\u4e3a\u4e00\u4e2a\u9002\u5408\u5728\u5185\u6838\u4e2d\u4f20\u9012\u548c\u5904\u7406\u7684\u7ed3\u6784\u3002 2. \u5b8f\u7684\u4f5c\u7528 \u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\uff1a\u901a\u8fc7\u683c\u5f0f\u5316\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\uff0c\u8fd9\u4e2a\u5b8f\u4f7f\u5f97Ebpf\u7a0b\u5e8f\u80fd\u591f\u89e3\u6790\u548c\u8bb0\u5f55\u7cfb\u7edf\u8c03\u7528\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u8fd9\u5bf9\u4e8e\u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u548c\u5206\u6790\u5de5\u5177\u975e\u5e38\u6709\u7528\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u7406\u89e3\u7a0b\u5e8f\u7684\u884c\u4e3a\u548c\u6027\u80fd\u74f6\u9888\u3002 \u5b89\u5168\u7b56\u7565\u6267\u884c\uff1a\u5728\u5b89\u5168\u76d1\u63a7\u548c\u7b56\u7565\u6267\u884c\u65b9\u9762\uff0c\u8fd9\u4e2a\u5b8f\u5141\u8bb8Ebpf\u7a0b\u5e8f\u68c0\u67e5\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u662f\u5426\u7b26\u5408\u5b89\u5168\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u68c0\u6d4b\u548c\u9632\u6b62\u6076\u610f\u8f6f\u4ef6\u5229\u7528\u7279\u5b9a\u7cfb\u7edf\u8c03\u7528\u8fdb\u884c\u975e\u6cd5\u64cd\u4f5c\u3002 \u6027\u80fd\u4f18\u5316\uff1a\u901a\u8fc7\u5206\u6790\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\uff0c\u8fd9\u4e2a\u5b8f\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u627e\u5230\u6027\u80fd\u74f6\u9888\u5e76\u8fdb\u884c\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u7edf\u8ba1\u4e0d\u540c\u7cfb\u7edf\u8c03\u7528\u7684\u4f7f\u7528\u9891\u7387\u548c\u8017\u65f6\uff0c\u4ece\u800c\u9488\u5bf9\u6027\u5730\u8fdb\u884c\u4f18\u5316\u3002 \u4e09\u3001eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u5728Ebpf\u4e2d\u7684\u5e94\u7528 1. \u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u5de5\u5177 \u8bb8\u591a\u7cfb\u7edf\u8c03\u7528\u8ffd\u8e2a\u5de5\u5177\uff08\u5982strace\uff09\u4f7f\u7528eBPF_SYSPROCLISTFMTARGDATATYPEARGC\u5b8f\u6765\u89e3\u6790\u548c\u663e\u793a\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u5b8f\u6765\u8ffd\u8e2aopen\u7cfb\u7edf\u8c03\u7528\uff1a include include include SEC(“tracepoint\/syscalls\/sys_enter_open”) int bpf_prog(void ctx) long syscall_nr = PT_REGS_PARM1(ctx); if (syscall_nr!= __NR_open) return 0; const char filename = (const char )PT_REGS_PARM2(ctx); int flags = (int)PT_REGS_PARM3(ctx); mode_t mode = (mode_t)PT_REGS_PARM4(ctx); struct syscall_metadata meta = NULL; eBPF_SYSPROCLISTFMTARGDATATYPEARGC(__NR_open, 3, meta, filename, […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-37820","post","type-post","status-publish","format-standard","hentry","category-discussion"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=37820"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37820\/revisions"}],"predecessor-version":[{"id":37822,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/37820\/revisions\/37822"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=37820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=37820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=37820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}