{"id":51789,"date":"2022-06-26T10:19:42","date_gmt":"2022-06-26T02:19:42","guid":{"rendered":"http:\/\/www.idc.net\/help\/51789\/"},"modified":"2022-06-26T10:19:42","modified_gmt":"2022-06-26T02:19:42","slug":"%e5%ae%9e%e8%b7%b5linux%e5%8a%a8%e6%80%81%e5%ba%93%e8%b0%83%e7%94%a8so%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88linuxso%e8%b0%83%e7%94%a8so%ef%bc%89","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/51789\/","title":{"rendered":"\u5b9e\u8df5Linux\u52a8\u6001\u5e93\u8c03\u7528SO\u7684\u65b9\u6cd5\uff08linuxso\u8c03\u7528so\uff09"},"content":{"rendered":"<p>Linux\u662f\u4e00\u4e2a\u5f00\u653e\u6e90\u4ee3\u7801\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5b83\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4f7f\u7528\u66f4\u5c11\u7684\u8f6f\u4ef6\u548c\u786c\u4ef6\u7684\u52aa\u529b\uff0c\u5141\u8bb8\u6211\u4eec\u8fdb\u884c\u66f4\u6709\u6548\u7684\u5f00\u53d1\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Linux\u52a8\u6001\u5e93\u8c03\u7528\u76f8\u5173\u7684SO\u5e93\u65ad\uff0c\u4ee5\u5229\u7528\u597dLinux\u53ef\u4ee5\u63d0\u4f9b\u7684\u529f\u80fd\u548c\u670d\u52a1\u3002<\/p>\n<\/p>\n<p>\u9996\u5148\uff0c\u8981\u8c03\u7528Linux\u52a8\u6001\u5e93\uff0c\u5fc5\u987b\u5728\u7cfb\u7edf\u4e2d\u4e0b\u8f7d\u6216\u5b89\u88c5SO\u6587\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7b80\u5355\u6b65\u9aa4\u6765\u5b9e\u73b0\uff1a<\/p>\n<\/p>\n<p>1. \u5c06\u6240\u9700\u7684SO\u6587\u4ef6\u4e0b\u8f7d\u5230\u672c\u5730\u76ee\u5f55\u4e2d\uff0c\u4e00\u822cso\u4f1a\u5b89\u88c5\u5230\/usr\/lib\/\u76ee\u5f55\u4e2d\uff1b<\/p>\n<p>2. \u6253\u5f00\u6240\u9700\u7684\u7f16\u8bd1\u5668\uff0c\u6bd4\u5982GCC\uff1b<\/p>\n<p>3. \u5728\u7f16\u8bd1\u5668\u547d\u4ee4\u884c\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\uff1agcc -o myprogram -ldl myprogram.c -L\/usr\/lib\/\uff1b<\/p>\n<p>4. \u4f7f\u7528\u7f16\u8bd1\u5668\u5c06myprogram.c\u6587\u4ef6\u7684\u673a\u5668\u7801\u7f16\u8bd1\u6210\u53ef\u6267\u884c\u6587\u4ef6\uff1b<\/p>\n<p>5. \u5c06\u7f16\u8bd1\u597d\u7684\u53ef\u6267\u884c\u6587\u4ef6\u8fd0\u884c\u5230Linux\u7cfb\u7edf\u4e2d\uff0c\u53ef\u6267\u884c\u6587\u4ef6\u5373\u53ef\u7528\u6765\u8c03\u7528SO\u52a8\u6001\u5e93\u3002<\/p>\n<\/p>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u6bb5\u4ee3\u7801\u793a\u4f8b\uff0c\u7528\u6765\u6f14\u793a\u5982\u4f55\u64cd\u4f5cLinux\u52a8\u6001\u5e93\u6765\u8c03\u7528SO\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p>\u201c`cpp<\/p>\n<p>#include <\/p>\n<\/p>\n<p>int main()<\/p>\n<p>{ <\/p>\n<p> void* libPtr;<\/p>\n<p> libPtr = dlopen(\u201c\/usr\/lib\/libexample.so\u201d, RTLD_LAZY); <\/p>\n<p> typedef int (*fptr)(); <\/p>\n<\/p>\n<p> fptr foo; <\/p>\n<p> *(void**)(&amp;foo) = dlsym(libPtr, \u201cfoo\u201d); <\/p>\n<p> foo(); <\/p>\n<p> dlclose(libPtr);<\/p>\n<p> return 0;<\/p>\n<p>}<\/p>\n<pre><br>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528dlopen()\u51fd\u6570\u5c06\u8981\u8c03\u7528\u7684SO\u52a8\u6001\u5e93\u6587\u4ef6(\u5373\/usr\/lib\/libexample.so)\u8f7d\u5165\uff1b\u7136\u540e\u4f7f\u7528dlsym()\u51fd\u6570\u83b7\u53d6\u5e76\u8c03\u7528\u5e93\u4e2d\u7684\u6307\u5b9a\u51fd\u6570\uff1b\u6700\u540e\u4f7f\u7528dlclose()\u51fd\u6570\u5173\u95ed\u52a8\u6001\u5e93\u6587\u4ef6\u3002<br><br>\u7531\u6b64\u53ef\u89c1\uff0c\u4f7f\u7528Linux\u52a8\u6001\u5e93\u8c03\u7528SO\u6587\u4ef6\u5e76\u4e0d\u96be\uff0c\u5b83\u80fd\u591f\u8ba9\u6211\u4eec\u7684\u5f00\u53d1\u6548\u7387\u5927\u5927\u63d0\u5347\uff0c\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6709\u52a9\u4e8e\u6211\u4eec\u6b63\u786e\u4f7f\u7528Linux\u52a8\u6001\u5e93\u8c03\u7528SO\u6587\u4ef6\uff0c\u4ee5\u83b7\u53d6\u6700\u5927\u7684\u6fc0\u53d1\u3002<br><\/pre>\n<p><a href=\"http:https:\/\/idc.net\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u9996\u9009\u540e\u6d6a\u4e91\uff0c2H2G\u9996\u670810\u5143\u5f00\u901a\u3002<br \/>\u540e\u6d6a\u4e91\uff08www.IDC.Net\uff09\u63d0\u4f9b\u7b80\u5355\u597d\u7528\uff0c\u4ef7\u683c\u539a\u9053\u7684\u9999\u6e2f\/\u7f8e\u56fd\u4e91\u670d\u52a1\u5668\u548c\u72ec\u7acb\u670d\u52a1\u5668\u3002IDC+ISP+ICP\u8d44\u8d28\u3002ARIN\u548cAPNIC\u4f1a\u5458\u3002\u6210\u719f\u6280\u672f\u56e2\u961f15\u5e74\u884c\u4e1a\u7ecf\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u662f\u4e00\u4e2a\u5f00\u653e\u6e90\u4ee3\u7801\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5b83\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4f7f\u7528\u66f4\u5c11\u7684\u8f6f\u4ef6\u548c\u786c\u4ef6\u7684\u52aa\u529b\uff0c\u5141\u8bb8\u6211\u4eec\u8fdb\u884c\u66f4\u6709\u6548\u7684\u5f00\u53d1\u670d\u52a1\u5668 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-51789","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/51789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=51789"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/51789\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=51789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=51789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=51789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}