{"id":63029,"date":"2025-04-29T14:56:32","date_gmt":"2025-04-29T06:56:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/63029\/"},"modified":"2025-04-29T14:56:32","modified_gmt":"2025-04-29T06:56:32","slug":"%e5%88%86%e6%9e%90selinux%e7%9a%84%e5%b7%a5%e4%bd%9c%e6%a8%a1%e5%bc%8f-3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/63029\/","title":{"rendered":"\u5206\u6790SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f"},"content":{"rendered":"

\"\u5206\u6790SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u63d2\u56fe\"<\/p>\n

\u6807\u9898\uff1aSELinux\u5de5\u4f5c\u6a21\u5f0f\u89e3\u6790\u53ca\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728\u73b0\u4ee3\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\uff0c\u5b89\u5168\u6027\u4e00\u76f4\u662f\u81f3\u5173\u91cd\u8981\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u4e3a\u4e86\u4fdd\u62a4\u670d\u52a1\u5668\u548c\u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u6076\u610f\u653b\u51fb\uff0c\u8bb8\u591a\u64cd\u4f5c\u7cfb\u7edf\u90fd\u63d0\u4f9b\u4e86\u4e00\u79cd\u53eb\u505aSELinux\uff08Security-Enhanced Linux\uff09\u7684\u5b89\u5168\u673a\u5236\u3002SELinux\u662f\u4e00\u79cd\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u7cfb\u7edf\uff0c\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u8d44\u6e90\u5b9e\u65bd\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u672c\u6587\u5c06\u5bf9SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u8fdb\u884c\u89e3\u6790\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u3002<\/p>\n

SELinux\u7684\u57fa\u672c\u539f\u7406<\/h3>\n

\u5728\u4f20\u7edf\u7684UNIX\u7cfb\u7edf\u4e2d\uff0c\u8bbf\u95ee\u63a7\u5236\u4e3b\u8981\u91c7\u7528\u7684\u662f\u57fa\u4e8e\u7528\u6237\u7684\u8bbf\u95ee\u63a7\u5236\uff08DAC\uff09\uff0c\u5373\u901a\u8fc7\u7528\u6237\u5bf9\u6587\u4ef6\u548c\u8fdb\u7a0b\u7684\u6743\u9650\u6765\u51b3\u5b9a\u8bbf\u95ee\u6743\u9650\u3002\u800cSELinux\u5f15\u5165\u4e86\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u7684\u6982\u5ff5\uff0c\u5c06\u8bbf\u95ee\u63a7\u5236\u6269\u5c55\u5230\u4e86\u66f4\u7ec6\u7c92\u5ea6\u7684\u5bf9\u8c61\u4e0a\uff0c\u5982\u8fdb\u7a0b\u3001\u6587\u4ef6\u548c\u7aef\u53e3\u7b49\u3002\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5bf9\u8c61\u548c\u4e3b\u4f53\u5206\u914d\u5b89\u5168\u4e0a\u4e0b\u6587\uff08Security Context\uff09\u6765\u5b9e\u73b0\u8bbf\u95ee\u63a7\u5236\u3002<\/p>\n

SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u4e3b\u8981\u5305\u62ec\u4e09\u4e2a\u57fa\u672c\u7ec4\u4ef6\uff1a\u7b56\u7565\u6587\u4ef6\uff08Policy\uff09\u3001\u4e0a\u4e0b\u6587\uff08Context\uff09\u548c\u51b3\u7b56\u5f15\u64ce\uff08Decision Engine\uff09\u3002\u5176\u4e2d\u7b56\u7565\u6587\u4ef6\u5b9a\u4e49\u4e86\u7cfb\u7edf\u5141\u8bb8\u7684\u64cd\u4f5c\u548c\u8bbf\u95ee\u89c4\u5219\uff0c\u4e0a\u4e0b\u6587\u7528\u4e8e\u6807\u8bc6\u5bf9\u8c61\u548c\u4e3b\u4f53\u7684\u5b89\u5168\u5c5e\u6027\uff0c\u800c\u51b3\u7b56\u5f15\u64ce\u5219\u6839\u636e\u7b56\u7565\u6587\u4ef6\u548c\u4e0a\u4e0b\u6587\u8fdb\u884c\u8bbf\u95ee\u63a7\u5236\u7684\u51b3\u7b56\u3002<\/p>\n

SELinux\u5de5\u4f5c\u6a21\u5f0f\u89e3\u6790<\/h3>\n

SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u53ef\u4ee5\u5206\u4e3a\u4e09\u79cd\uff1aEnforcing\u3001Permissive\u548cDisabled\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u5bf9\u6bcf\u79cd\u6a21\u5f0f\u8fdb\u884c\u8be6\u7ec6\u89e3\u6790\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

Enforcing\u6a21\u5f0f<\/h4>\n

\u5728Enforcing\u6a21\u5f0f\u4e0b\uff0cSELinux\u4f1a\u4e25\u683c\u6267\u884c\u7b56\u7565\u6587\u4ef6\u5b9a\u4e49\u7684\u8bbf\u95ee\u89c4\u5219\uff0c\u5e76\u62d2\u7edd\u4efb\u4f55\u8fdd\u53cd\u89c4\u5219\u7684\u8bbf\u95ee\u8bf7\u6c42\u3002\u8fd9\u662fSELinux\u6700\u5e38\u7528\u7684\u6a21\u5f0f\uff0c\u4e5f\u662f\u6700\u5b89\u5168\u7684\u6a21\u5f0f\u4e4b\u4e00\u3002<\/p>\n

Enforcing\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

# \u67e5\u770b\u5f53\u524dSELinux\u6a21\u5f0f\ngetenforce\n\n# \u8bbe\u7f6eSELinux\u4e3aEnforcing\u6a21\u5f0f\nsetenforce 1\n\n# \u8fd0\u884c\u4e00\u4e2a\u9700\u8981\u8fdb\u884c\u6587\u4ef6\u8bbf\u95ee\u7684\u7a0b\u5e8f\n.\/my_program<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
Permissive\u6a21\u5f0f<\/h4>\n
\u5728Permissive\u6a21\u5f0f\u4e0b\uff0cSELinux\u4f1a\u8bb0\u5f55\u8bbf\u95ee\u8bf7\u6c42\u7684\u8fdd\u89c4\u60c5\u51b5\uff0c\u4f46\u4e0d\u4f1a\u963b\u6b62\u5176\u6267\u884c\u3002\u8fd9\u79cd\u6a21\u5f0f\u4e3b\u8981\u7528\u4e8e\u8c03\u8bd5\u548c\u6392\u67e5\u95ee\u9898\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u5b9a\u4f4d\u95ee\u9898\u5e76\u4f18\u5316\u7b56\u7565\u6587\u4ef6\u3002<\/p>\n
Permissive\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
# \u8bbe\u7f6eSELinux\u4e3aPermissive\u6a21\u5f0f\nsetenforce 0\n\n# \u8fd0\u884c\u4e00\u4e2a\u9700\u8981\u8fdb\u884c\u6587\u4ef6\u8bbf\u95ee\u7684\u7a0b\u5e8f\n.\/my_program<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
Disabled\u6a21\u5f0f<\/h4>\n
\u5728Disabled\u6a21\u5f0f\u4e0b\uff0cSELinux\u5c06\u88ab\u5b8c\u5168\u5173\u95ed\uff0c\u7cfb\u7edf\u4f1a\u56de\u5230\u4f20\u7edf\u7684DAC\u8bbf\u95ee\u63a7\u5236\u6a21\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u901a\u5e38\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u56e0\u4e3a\u4f1a\u964d\u4f4e\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/p>\n
Disabled\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
# \u67e5\u770b\u5f53\u524dSELinux\u6a21\u5f0f\ngetenforce\n\n# \u5173\u95edSELinux\nsetenforce 0\n\n# \u8fd0\u884c\u4e00\u4e2a\u9700\u8981\u8fdb\u884c\u6587\u4ef6\u8bbf\u95ee\u7684\u7a0b\u5e8f\n.\/my_program<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u7ed3\u8bed<\/h3>\n
\u901a\u8fc7\u4ee5\u4e0a\u5bf9SELinux\u5de5\u4f5c\u6a21\u5f0f\u7684\u89e3\u6790\u548c\u4ee3\u7801\u793a\u4f8b\u7684\u4ecb\u7ecd\uff0c\u76f8\u4fe1\u8bfb\u8005\u5bf9SELinux\u7684\u5de5\u4f5c\u539f\u7406\u548c\u4f7f\u7528\u65b9\u5f0f\u6709\u4e86\u66f4\u6df1\u5165\u7684\u7406\u89e3\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u8981\u9009\u62e9\u9002\u5408\u7684\u5de5\u4f5c\u6a21\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u638c\u63e1SELinux\u7684\u5e94\u7528\u548c\u914d\u7f6e\u6280\u5de7\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5206\u6790SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6807\u9898\uff1aSELinux\u5de5\u4f5c\u6a21\u5f0f\u89e3\u6790\u53ca\u4ee3\u7801\u793a\u4f8b \u5728\u73b0\u4ee3\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\uff0c\u5b89\u5168\u6027\u4e00\u76f4\u662f\u81f3\u5173\u91cd\u8981\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u4e3a\u4e86\u4fdd\u62a4\u670d\u52a1\u5668\u548c\u5e94\u7528\u7a0b\u5e8f\u514d\u53d7\u6076\u610f\u653b\u51fb\uff0c\u8bb8\u591a\u64cd\u4f5c\u7cfb\u7edf\u90fd\u63d0\u4f9b\u4e86\u4e00\u79cd\u53eb\u505aSELinux\uff08Security-Enhanced Linux\uff09\u7684\u5b89\u5168\u673a\u5236\u3002SELinux\u662f\u4e00\u79cd\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u7cfb\u7edf\uff0c\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u8d44\u6e90\u5b9e\u65bd\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u672c\u6587\u5c06\u5bf9SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u8fdb\u884c\u89e3\u6790\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u3002 SELinux\u7684\u57fa\u672c\u539f\u7406 \u5728\u4f20\u7edf\u7684UNIX\u7cfb\u7edf\u4e2d\uff0c\u8bbf\u95ee\u63a7\u5236\u4e3b\u8981\u91c7\u7528\u7684\u662f\u57fa\u4e8e\u7528\u6237\u7684\u8bbf\u95ee\u63a7\u5236\uff08DAC\uff09\uff0c\u5373\u901a\u8fc7\u7528\u6237\u5bf9\u6587\u4ef6\u548c\u8fdb\u7a0b\u7684\u6743\u9650\u6765\u51b3\u5b9a\u8bbf\u95ee\u6743\u9650\u3002\u800cSELinux\u5f15\u5165\u4e86\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236\uff08MAC\uff09\u7684\u6982\u5ff5\uff0c\u5c06\u8bbf\u95ee\u63a7\u5236\u6269\u5c55\u5230\u4e86\u66f4\u7ec6\u7c92\u5ea6\u7684\u5bf9\u8c61\u4e0a\uff0c\u5982\u8fdb\u7a0b\u3001\u6587\u4ef6\u548c\u7aef\u53e3\u7b49\u3002\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5bf9\u8c61\u548c\u4e3b\u4f53\u5206\u914d\u5b89\u5168\u4e0a\u4e0b\u6587\uff08Security Context\uff09\u6765\u5b9e\u73b0\u8bbf\u95ee\u63a7\u5236\u3002 SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u4e3b\u8981\u5305\u62ec\u4e09\u4e2a\u57fa\u672c\u7ec4\u4ef6\uff1a\u7b56\u7565\u6587\u4ef6\uff08Policy\uff09\u3001\u4e0a\u4e0b\u6587\uff08Context\uff09\u548c\u51b3\u7b56\u5f15\u64ce\uff08Decision Engine\uff09\u3002\u5176\u4e2d\u7b56\u7565\u6587\u4ef6\u5b9a\u4e49\u4e86\u7cfb\u7edf\u5141\u8bb8\u7684\u64cd\u4f5c\u548c\u8bbf\u95ee\u89c4\u5219\uff0c\u4e0a\u4e0b\u6587\u7528\u4e8e\u6807\u8bc6\u5bf9\u8c61\u548c\u4e3b\u4f53\u7684\u5b89\u5168\u5c5e\u6027\uff0c\u800c\u51b3\u7b56\u5f15\u64ce\u5219\u6839\u636e\u7b56\u7565\u6587\u4ef6\u548c\u4e0a\u4e0b\u6587\u8fdb\u884c\u8bbf\u95ee\u63a7\u5236\u7684\u51b3\u7b56\u3002 SELinux\u5de5\u4f5c\u6a21\u5f0f\u89e3\u6790 SELinux\u7684\u5de5\u4f5c\u6a21\u5f0f\u53ef\u4ee5\u5206\u4e3a\u4e09\u79cd\uff1aEnforcing\u3001Permissive\u548cDisabled\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u5bf9\u6bcf\u79cd\u6a21\u5f0f\u8fdb\u884c\u8be6\u7ec6\u89e3\u6790\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002 Enforcing\u6a21\u5f0f \u5728Enforcing\u6a21\u5f0f\u4e0b\uff0cSELinux\u4f1a\u4e25\u683c\u6267\u884c\u7b56\u7565\u6587\u4ef6\u5b9a\u4e49\u7684\u8bbf\u95ee\u89c4\u5219\uff0c\u5e76\u62d2\u7edd\u4efb\u4f55\u8fdd\u53cd\u89c4\u5219\u7684\u8bbf\u95ee\u8bf7\u6c42\u3002\u8fd9\u662fSELinux\u6700\u5e38\u7528\u7684\u6a21\u5f0f\uff0c\u4e5f\u662f\u6700\u5b89\u5168\u7684\u6a21\u5f0f\u4e4b\u4e00\u3002 Enforcing\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a # \u67e5\u770b\u5f53\u524dSELinux\u6a21\u5f0f getenforce # \u8bbe\u7f6eSELinux\u4e3aEnforcing\u6a21\u5f0f setenforce 1 # \u8fd0\u884c\u4e00\u4e2a\u9700\u8981\u8fdb\u884c\u6587\u4ef6\u8bbf\u95ee\u7684\u7a0b\u5e8f .\/my_program \u767b\u5f55\u540e\u590d\u5236 Permissive\u6a21\u5f0f \u5728Permissive\u6a21\u5f0f\u4e0b\uff0cSELinux\u4f1a\u8bb0\u5f55\u8bbf\u95ee\u8bf7\u6c42\u7684\u8fdd\u89c4\u60c5\u51b5\uff0c\u4f46\u4e0d\u4f1a\u963b\u6b62\u5176\u6267\u884c\u3002\u8fd9\u79cd\u6a21\u5f0f\u4e3b\u8981\u7528\u4e8e\u8c03\u8bd5\u548c\u6392\u67e5\u95ee\u9898\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u5b9a\u4f4d\u95ee\u9898\u5e76\u4f18\u5316\u7b56\u7565\u6587\u4ef6\u3002 Permissive\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a # \u8bbe\u7f6eSELinux\u4e3aPermissive\u6a21\u5f0f setenforce 0 # \u8fd0\u884c\u4e00\u4e2a\u9700\u8981\u8fdb\u884c\u6587\u4ef6\u8bbf\u95ee\u7684\u7a0b\u5e8f .\/my_program \u767b\u5f55\u540e\u590d\u5236 Disabled\u6a21\u5f0f \u5728Disabled\u6a21\u5f0f\u4e0b\uff0cSELinux\u5c06\u88ab\u5b8c\u5168\u5173\u95ed\uff0c\u7cfb\u7edf\u4f1a\u56de\u5230\u4f20\u7edf\u7684DAC\u8bbf\u95ee\u63a7\u5236\u6a21\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u901a\u5e38\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u56e0\u4e3a\u4f1a\u964d\u4f4e\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002 Disabled\u6a21\u5f0f\u793a\u4f8b\u4ee3\u7801\uff1a # 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