{"id":13183,"date":"2024-04-28T17:34:49","date_gmt":"2024-04-28T09:34:49","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=13183"},"modified":"2024-05-17T11:36:07","modified_gmt":"2024-05-17T03:36:07","slug":"%e5%86%85%e8%81%94%e6%b1%87%e7%bc%96","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=13183","title":{"rendered":"\u5185\u8054\u6c47\u7f16"},"content":{"rendered":"<p><a href=\"https:\/\/blog.csdn.net\/nianzhu2937\/article\/details\/122259246\">https:\/\/blog.csdn.net\/nianzhu2937\/article\/details\/122259246<\/a><\/p>\n<ul>\n<li>\u8c03\u7528\u5185\u8054\u6c47\u7f16\u8fdb\u884c\u8fdb\u7a0b\u7684\u514b\u9686<\/li>\n<\/ul>\n<pre><code class=\"language-c\">#include &lt;stdio.h&gt;\n#include &lt;sched.h&gt;\n#include &lt;unistd.h&gt;\n\nint main() {\n    pid_t pid;\n\n    asm volatile (\n        &quot;mov $63, %%rax\\n\\t&quot; \/\/ \u7cfb\u7edf\u8c03\u7528\u53f7\u4e3a63\u662fclone\n        &quot;mov $0, %%rdi\\n\\t&quot;  \/\/ \u8bbe\u7f6eflags\u4e3a0\uff0c\u5373\u4e0d\u4f7f\u7528\u4efb\u4f55\u7279\u6b8a\u514b\u9686\u6807\u5fd7\n        &quot;syscall\\n\\t&quot;        \/\/ \u6267\u884c\u7cfb\u7edf\u8c03\u7528\n        &quot;mov %%rax, %0\\n\\t&quot;  \/\/ \u628a\u7cfb\u7edf\u8c03\u7528\u7684\u8fd4\u56de\u503c\u79fb\u52a8\u5230\u53d8\u91cfpid\u4e2d\n        : &quot;=m&quot;(pid)          \/\/ \u8f93\u51fa\u64cd\u4f5c\u6570\n        :                    \/\/ \u65e0\u8f93\u5165\u64cd\u4f5c\u6570\n        : &quot;%rax&quot;, &quot;%rdi&quot;     \/\/ \u4e0d\u4fdd\u8bc1\u5bc4\u5b58\u5668\u7684\u503c\u5728\u6c47\u7f16\u6307\u4ee4\u6267\u884c\u540e\u4fdd\u6301\u4e0d\u53d8\n    );\n\n    if (pid &lt; 0) {\n        perror(&quot;clone failed&quot;);\n    } else if (pid &gt; 0) {\n        printf(&quot;\u5b50\u8fdb\u7a0bPID: %d\\n&quot;, pid);\n    } else {\n        printf(&quot;\u5728\u5b50\u8fdb\u7a0b\u4e2d...\\n&quot;);\n    }\n\n    return 0;\n}<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4f7f\u7528\u4e86clone\u7cfb\u7edf\u8c03\u7528\u7684\u7cfb\u7edf\u8c03\u7528\u53f7\uff0863\uff09\uff0c\u5e76\u901a\u8fc7\u5185\u5d4c\u6c47\u7f16\u6307\u4ee4\u8bbe\u7f6e\u4e86\u76f8\u5e94\u7684\u5bc4\u5b58\u5668\u53c2\u6570\u3002mov $0, %%rdi\u8bbe\u7f6e\u4e86rdi\u5bc4\u5b58\u5668\u6765\u4f20\u9012\u514b\u9686\u6807\u5fd7\uff0c\u8fd9\u91cc\u4f20\u9012\u4e860\uff0c\u8868\u793a\u4e0d\u4f7f\u7528\u4efb\u4f55\u7279\u6b8a\u7684\u514b\u9686\u6807\u5fd7\u3002syscall\u6307\u4ee4\u89e6\u53d1\u4e86\u7cfb\u7edf\u8c03\u7528\uff0c\u800cmov %%rax, %0\u5c06\u7cfb\u7edf\u8c03\u7528\u7684\u8fd4\u56de\u503c\u79fb\u52a8\u5230C\u53d8\u91cfpid\u4e2d\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8fd9\u6bb5\u4ee3\u7801\u4ec5\u7528\u4e8e\u6f14\u793a\u76ee\u7684\uff0c\u5b9e\u9645\u4f7f\u7528\u65f6\u5e94\u8be5\u6839\u636e\u5177\u4f53\u7684\u7cfb\u7edf\u8c03\u7528\u63a5\u53e3\u548c\u9700\u6c42\u6765\u8bbe\u7f6e\u53c2\u6570\u3002\u6b64\u5916\uff0cclone\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u548c\u884c\u4e3a\u53ef\u80fd\u4f1a\u6839\u636eLinux\u5185\u6838\u7248\u672c\u7684\u53d8\u5316\u800c\u53d8\u5316\uff0c\u6240\u4ee5\u5728\u4f7f\u7528\u65f6\u5e94\u53c2\u8003\u7279\u5b9a\u5185\u6838\u7684\u6587\u6863\u3002<\/p>\n<button class=\"simplefavorite-button\" data-postid=\"13183\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>https:\/\/blog.csdn.net\/nianzhu2937\/article\/details\/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1007],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13183"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13183"}],"version-history":[{"count":3,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13183\/revisions"}],"predecessor-version":[{"id":13449,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13183\/revisions\/13449"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13183"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}