{"id":51394,"date":"2024-12-03T15:05:44","date_gmt":"2024-12-03T07:05:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51394\/"},"modified":"2024-12-03T15:05:44","modified_gmt":"2024-12-03T07:05:44","slug":"%e6%b7%b1%e5%85%a5%e4%ba%86%e8%a7%a3selinux%e7%9a%84%e5%8a%9f%e8%83%bd%e5%92%8c%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51394\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406"},"content":{"rendered":"

<\/b> <\/p>\n

\u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406<\/h1>\n

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

SELinux\u662f\u4e00\u79cd\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u5b89\u5168\u673a\u5236\uff0c\u7528\u4e8e\u4fdd\u62a4Linux\u64cd\u4f5c\u7cfb\u7edf\u548c\u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u6076\u610f\u653b\u51fb\u4ee5\u53ca\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8SELinux\u7684\u4f5c\u7528\u3001\u539f\u7406\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e00\u5b89\u5168\u5de5\u5177\u3002<\/p>\n

1. SELinux\u7684\u4f5c\u7528<\/h3>\n

SELinux\u662f\u4e00\u79cd\u5728\u5185\u6838\u7ea7\u522b\u5b9e\u65bd\u7684\u5b89\u5168\u673a\u5236\uff0c\u5176\u76ee\u7684\u662f\u5f3a\u5316Linux\u7cfb\u7edf\u7684\u5b89\u5168\u6027\uff0c\u63d0\u4f9b\u66f4\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u76f8\u8f83\u4e8e\u4f20\u7edf\u7684Linux\u8bbf\u95ee\u63a7\u5236\uff08DAC\uff09\uff0cSELinux\u63d0\u4f9b\u4e86\u66f4\u52a0\u7ec6\u81f4\u7684\u6743\u9650\u63a7\u5236\uff0c\u53ef\u4ee5\u9650\u5236\u7a0b\u5e8f\u5bf9\u7cfb\u7edf\u8d44\u6e90\u7684\u8bbf\u95ee\u4ee5\u53ca\u8fdb\u7a0b\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002<\/p>\n

\u901a\u8fc7SELinux\uff0c\u7528\u6237\u53ef\u4ee5\u5b9a\u4e49\u89c4\u5219\u6765\u9650\u5236\u54ea\u4e9b\u8fdb\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u54ea\u4e9b\u6587\u4ef6\u3001\u54ea\u4e9b\u7f51\u7edc\u7aef\u53e3\uff0c\u4ee5\u53ca\u5bf9\u7cfb\u7edf\u8d44\u6e90\u7684\u5176\u4ed6\u8bbf\u95ee\u63a7\u5236\u3002\u8fd9\u79cd\u57fa\u4e8e\u7b56\u7565\u7684\u5b89\u5168\u673a\u5236\u53ef\u4ee5\u964d\u4f4e\u7cfb\u7edf\u906d\u53d7\u6076\u610f\u653b\u51fb\u7684\u98ce\u9669\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u5b89\u5168\u6027\u3002<\/p>\n

2. SELinux\u7684\u539f\u7406<\/h3>\n

\u5728SELinux\u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\uff08\u5982\u6587\u4ef6\u3001\u8fdb\u7a0b\u3001\u7f51\u7edc\u7aef\u53e3\u7b49\uff09\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u7b7e\uff0c\u88ab\u79f0\u4e3a\u5b89\u5168\u4e0a\u4e0b\u6587\uff08Security Context\uff09\u3002\u8be5\u5b89\u5168\u4e0a\u4e0b\u6587\u5305\u542b\u4e86\u5bf9\u8c61\u7684\u5b89\u5168\u5c5e\u6027\u4fe1\u606f\uff0c\u5982\u5bf9\u8c61\u7684\u8bbf\u95ee\u6743\u9650\u3001\u6240\u5c5e\u7528\u6237\u3001\u89d2\u8272\u7b49\u3002<\/p>\n

\u53e6\u5916\uff0cSELinux\u4e2d\u5c06\u7cfb\u7edf\u8d44\u6e90\u548c\u64cd\u4f5c\u5b9a\u4e49\u4e3a\u4e00\u4e2a\u5b89\u5168\u7b56\u7565\u96c6\u5408\uff0c\u5305\u62ec\u4e86\u5141\u8bb8\u8bbf\u95ee\u7684\u5bf9\u8c61\u548c\u64cd\u4f5c\u7684\u89c4\u5219\u3002\u8fd9\u79cd\u65b9\u5f0f\u6709\u6548\u5730\u5c06\u6743\u9650\u7ba1\u7406\u4ece\u7528\u6237\u7ea7\u522b\u63d0\u5347\u5230\u4e86\u7cfb\u7edf\u7ea7\u522b\uff0c\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n

3. SELinux\u7684\u4ee3\u7801\u793a\u4f8b<\/h3>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u5728SELinux\u4e2d\u5b9a\u4e49\u5b89\u5168\u7b56\u7565\u548c\u8bbf\u95ee\u89c4\u5219\u3002<\/p>\n

\u793a\u4f8b\uff1a<\/strong><\/p>\n

\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3atest_script.sh<\/code>\u7684\u811a\u672c\uff0c\u6211\u4eec\u5e0c\u671b\u8be5\u811a\u672c\u53ea\u80fd\u8bfb\u53d6\/var\/log\/messages<\/code>\u6587\u4ef6\uff0c\u5e76\u4e0d\u80fd\u5199\u5165\u5176\u4ed6\u6587\u4ef6\u3002<\/p>\n

    \n
  1. \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2aSELinux\u7b56\u7565\u6a21\u5757\u6587\u4ef6test_script.te<\/code>\uff0c\u5b9a\u4e49\u8bbf\u95ee\u89c4\u5219\uff1a<\/li>\n<\/ol>\n
    policy_module(test_script, 1.0);\nrequire {\n    type unconfined_t;\n    type var_log_t;\n    type var_t;\n    class file { read open getattr };\n}\n\nallow unconfined_t var_log_t:file { read getattr };\ndontaudit unconfined_t var_t:file { write create unlink };<\/pre>\n
      \n
    1. \u7f16\u8bd1\u548c\u52a0\u8f7d\u7b56\u7565\u6a21\u5757\uff1a<\/li>\n<\/ol>\n
      $ checkmodule -m -M -o test_script.mod test_script.te\n$ semodule_package -o test_script.pp -m test_script.mod\n$ semodule -i test_script.pp<\/pre>\n
        \n
      1. \u4e3atest_script.sh<\/code>\u811a\u672c\u8bbe\u7f6e\u5b89\u5168\u6807\u7b7e\uff1a<\/li>\n<\/ol>\n
        $ chcon -t unconfined_t \/path\/to\/test_script.sh<\/pre>\n
        \u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u6211\u4eec\u6210\u529f\u4e3atest_script.sh<\/code>\u811a\u672c\u5b9a\u4e49\u4e86\u8bbf\u95ee\u89c4\u5219\uff0c\u9650\u5236\u4e86\u5176\u5bf9\/var\/log\/messages<\/code>\u6587\u4ef6\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n
        \u7ed3\u8bed<\/h3>\n
        \u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\u548c\u793a\u4f8b\uff0c\u76f8\u4fe1\u8bfb\u8005\u5bf9SELinux\u7684\u4f5c\u7528\u3001\u539f\u7406\u6709\u4e86\u66f4\u6df1\u5165\u7684\u8ba4\u8bc6\u3002SELinux\u4f5c\u4e3a\u4e00\u79cd\u91cd\u8981\u7684\u5b89\u5168\u673a\u5236\uff0c\u5728\u4fdd\u62a4Linux\u7cfb\u7edf\u514d\u53d7\u6076\u610f\u653b\u51fb\u548c\u672a\u7ecf\u6388\u6743\u8bbf\u95ee\u65b9\u9762\u626e\u6f14\u7740\u91cd\u8981\u89d2\u8272\u3002\u5e0c\u671b\u8bfb\u8005\u80fd\u591f\u8fdb\u4e00\u6b65\u5b66\u4e60\u548c\u5e94\u7528SELinux\uff0c\u52a0\u5f3a\u7cfb\u7edf\u7684\u5b89\u5168\u9632\u62a4\u3002<\/p>\n
        \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
        \n
        <\/dt>\n
        \n   \u5229\u7528\u4fe1\u9053\u7684 MapReduce \u5de5\u4f5c\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        \u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406 \u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u6df1\u5165\u4e86\u89e3SELinux\u7684\u529f\u80fd\u548c\u5de5\u4f5c\u539f\u7406\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01 SELinux\u662f\u4e00\u79cd\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u5b89\u5168\u673a\u5236\uff0c\u7528\u4e8e\u4fdd\u62a4Linux\u64cd\u4f5c\u7cfb\u7edf\u548c\u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u6076\u610f\u653b\u51fb\u4ee5\u53ca\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8SELinux\u7684\u4f5c\u7528\u3001\u539f\u7406\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e00\u5b89\u5168\u5de5\u5177\u3002 1. SELinux\u7684\u4f5c\u7528 SELinux\u662f\u4e00\u79cd\u5728\u5185\u6838\u7ea7\u522b\u5b9e\u65bd\u7684\u5b89\u5168\u673a\u5236\uff0c\u5176\u76ee\u7684\u662f\u5f3a\u5316Linux\u7cfb\u7edf\u7684\u5b89\u5168\u6027\uff0c\u63d0\u4f9b\u66f4\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u76f8\u8f83\u4e8e\u4f20\u7edf\u7684Linux\u8bbf\u95ee\u63a7\u5236\uff08DAC\uff09\uff0cSELinux\u63d0\u4f9b\u4e86\u66f4\u52a0\u7ec6\u81f4\u7684\u6743\u9650\u63a7\u5236\uff0c\u53ef\u4ee5\u9650\u5236\u7a0b\u5e8f\u5bf9\u7cfb\u7edf\u8d44\u6e90\u7684\u8bbf\u95ee\u4ee5\u53ca\u8fdb\u7a0b\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002 \u901a\u8fc7SELinux\uff0c\u7528\u6237\u53ef\u4ee5\u5b9a\u4e49\u89c4\u5219\u6765\u9650\u5236\u54ea\u4e9b\u8fdb\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u54ea\u4e9b\u6587\u4ef6\u3001\u54ea\u4e9b\u7f51\u7edc\u7aef\u53e3\uff0c\u4ee5\u53ca\u5bf9\u7cfb\u7edf\u8d44\u6e90\u7684\u5176\u4ed6\u8bbf\u95ee\u63a7\u5236\u3002\u8fd9\u79cd\u57fa\u4e8e\u7b56\u7565\u7684\u5b89\u5168\u673a\u5236\u53ef\u4ee5\u964d\u4f4e\u7cfb\u7edf\u906d\u53d7\u6076\u610f\u653b\u51fb\u7684\u98ce\u9669\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6574\u4f53\u5b89\u5168\u6027\u3002 2. SELinux\u7684\u539f\u7406 \u5728SELinux\u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\uff08\u5982\u6587\u4ef6\u3001\u8fdb\u7a0b\u3001\u7f51\u7edc\u7aef\u53e3\u7b49\uff09\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u7b7e\uff0c\u88ab\u79f0\u4e3a\u5b89\u5168\u4e0a\u4e0b\u6587\uff08Security Context\uff09\u3002\u8be5\u5b89\u5168\u4e0a\u4e0b\u6587\u5305\u542b\u4e86\u5bf9\u8c61\u7684\u5b89\u5168\u5c5e\u6027\u4fe1\u606f\uff0c\u5982\u5bf9\u8c61\u7684\u8bbf\u95ee\u6743\u9650\u3001\u6240\u5c5e\u7528\u6237\u3001\u89d2\u8272\u7b49\u3002 \u53e6\u5916\uff0cSELinux\u4e2d\u5c06\u7cfb\u7edf\u8d44\u6e90\u548c\u64cd\u4f5c\u5b9a\u4e49\u4e3a\u4e00\u4e2a\u5b89\u5168\u7b56\u7565\u96c6\u5408\uff0c\u5305\u62ec\u4e86\u5141\u8bb8\u8bbf\u95ee\u7684\u5bf9\u8c61\u548c\u64cd\u4f5c\u7684\u89c4\u5219\u3002\u8fd9\u79cd\u65b9\u5f0f\u6709\u6548\u5730\u5c06\u6743\u9650\u7ba1\u7406\u4ece\u7528\u6237\u7ea7\u522b\u63d0\u5347\u5230\u4e86\u7cfb\u7edf\u7ea7\u522b\uff0c\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002 3. SELinux\u7684\u4ee3\u7801\u793a\u4f8b \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u5728SELinux\u4e2d\u5b9a\u4e49\u5b89\u5168\u7b56\u7565\u548c\u8bbf\u95ee\u89c4\u5219\u3002 \u793a\u4f8b\uff1a \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3atest_script.sh\u7684\u811a\u672c\uff0c\u6211\u4eec\u5e0c\u671b\u8be5\u811a\u672c\u53ea\u80fd\u8bfb\u53d6\/var\/log\/messages\u6587\u4ef6\uff0c\u5e76\u4e0d\u80fd\u5199\u5165\u5176\u4ed6\u6587\u4ef6\u3002 \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2aSELinux\u7b56\u7565\u6a21\u5757\u6587\u4ef6test_script.te\uff0c\u5b9a\u4e49\u8bbf\u95ee\u89c4\u5219\uff1a policy_module(test_script, 1.0); require { type unconfined_t; type var_log_t; type var_t; class file { read open getattr }; } allow unconfined_t var_log_t:file { read getattr }; dontaudit unconfined_t var_t:file { write create unlink }; \u7f16\u8bd1\u548c\u52a0\u8f7d\u7b56\u7565\u6a21\u5757\uff1a $ checkmodule -m […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-51394","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=51394"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51394\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}