{"id":273126,"date":"2021-01-11T17:22:27","date_gmt":"2021-01-11T09:22:27","guid":{"rendered":"http:\/\/4563.org\/?p=273126"},"modified":"2021-01-11T17:22:27","modified_gmt":"2021-01-11T09:22:27","slug":"%e6%80%8e%e4%b9%88%e5%9c%a8-c-%e4%bb%a3%e7%a0%81%e4%b8%ad%e7%9f%a5%e9%81%93%e8%87%aa%e5%b7%b1%e7%94%a8-c-%e6%a0%87%e5%87%86%e5%ba%93%e6%98%af-musl-libc%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=273126","title":{"rendered":"\u600e\u4e48\u5728 C \u4ee3\u7801\u4e2d\u77e5\u9053\u81ea\u5df1\u7528 C \u6807\u51c6\u5e93\u662f musl libc\uff1f"},"content":{"rendered":"
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\u600e\u4e48\u5728 C \u4ee3\u7801\u4e2d\u77e5\u9053\u81ea\u5df1\u7528 C \u6807\u51c6\u5e93\u662f musl libc\uff1f <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : c137rick <\/span> <\/i> 1<\/span> <\/div>\n
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Linux \u4e0b\u5e38\u89c1\u7684 C \u6807\u51c6\u5e93\u4e3a glibc\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b8f __GLIBC__<\/code> \u8bc6\u522b\uff0c\u4f46\u662f musl libc \u6ca1\u6709\u63d0\u4f9b\u7c7b\u4f3c __MUSL__<\/code> \u8fd9\u6837\u7684\u5b8f\u6765\u8fdb\u884c\u6807\u8bb0\uff08\u5b98\u65b9\u89e3\u91ca\uff09\uff0c\u90a3\u4e48\u5e94\u8be5\u600e\u4e48\u5728 C \u4ee3\u7801\u4e2d\u8bc6\u522b\u5462\uff1f\u6700\u597d\u4e0d\u8981\u56e0\u4e3a\u8fd9\u4e2a\u5199\u4e24\u5957\u4ee3\u7801\u3002<\/p>\n

\u8d77\u56e0\u5c31\u662f glibc \u548c musl libc \u4e2d struct in6_addr<\/code> \u7684\u6210\u5458\u540d\u4e0d\u4e00\u6837\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n

\/* musl libc \u7684\u5b9e\u73b0 *\/  struct in6_addr {         union {                 uint8_t __s6_addr[16];                 uint16_t __s6_addr16[8];                 uint32_t __s6_addr32[4];         } __in6_union; }; <\/code><\/pre>\n
\/* glibc \u5b9e\u73b0 *\/  #if !__USE_KERNEL_IPV6_DEFS \/* IPv6 address *\/ struct in6_addr   {     union       {  uint8_t __u6_addr8[16];  uint16_t __u6_addr16[8];  uint32_t __u6_addr32[4];       } __in6_u; #define s6_addr   __in6_u.__u6_addr8 #ifdef __USE_MISC # define s6_addr16  __in6_u.__u6_addr16 # define s6_addr32  __in6_u.__u6_addr32 #endif   }; #endif \/* !__USE_KERNEL_IPV6_DEFS *\/ <\/code><\/pre>\n
\u76ee\u524d\u4e00\u4e2a\u4e0d\u600e\u4e48\u9760\u8c31\u7684\u60f3\u6cd5\u662f\u6392\u9664\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7\u5b8f\u8bc6\u522b glibc \u3001eglibc \u548c uclibc \u3002\u7b97\u4e0a musl libc \u5e38\u89c1\u7684\u5927\u6982\u4e5f\u5c31\u8fd9\u56db\u4e2a\u5427\uff1f\u90a3\u4e48\u901a\u8fc7\u5b8f\u8bc6\u522b\u5230\u90fd\u4e0d\u662f glibc \u3001eglibc \u548c uclibc \u540e\uff0c\u5c31\u9ed8\u8ba4\u662f musl libc \u3002\u4f46\u662f\u8bf4\u5b9e\u8bdd\u4e0d\u592a\u9760\u8c31\uff0c\u56e0\u4e3a\u4e07\u4e00\u8fd8\u6709\u522b\u7684\u5e93\u5c31\u5bb9\u6613\u51fa\u95ee\u9898\u3002<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (4<\/span>)        <\/div>\n
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     \u8cc7\u6df1\u5927\u4f6c : favourstreet <\/span>  <\/div>\n
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                                                                 \u4eba\u5bb6\u6210\u5458\u540d\u524d\u9762\u52a0\u4e86\u4e00\u4e2a\u4e0b\u5212\u7ebf\u8fd8\u4e0d\u591f\uff0c\u52a0\u4e86\u4e24\u4e2a\u4e0b\u5212\u7ebf\uff0c\u4e3b\u4f60\u597d\u6700\u597d\u89e3\u91ca\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u8981\u201c\u628a\u624b\u4f38\u8fdb\u53bb\u201d\u5012\u817e\u4e00\u4e2a\u6446\u660e\u4e86\u4e0d\u7ed9\u5916\u4eba\u770b\u7684\u4e1c\u897f\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : minami <\/span>  <\/div>\n
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                                                                 \u6210\u5458\u540d\u4e0d\u4e00\u6837\uff0c\u4f46\u5185\u5b58\u957f\u5ea6\u662f\u4e00\u6837\u7684\u5427\uff0c\u81ea\u5df1\u91cd\u5b9a\u4e49\u4e0b\u7ed3\u6784\u4f53\u5c31\u53ef\u4ee5\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : c137rick <\/span>  <\/div>\n
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                                                                 @favourstreet #1 \u539f\u56e0\u5c31\u662f\u8981\u5206\u522b\u8bc6\u522b IPV6 \u6bcf\u4e00\u4e2a bit \u7528\u6765\u505a\u6210\u524d\u7f00\u6811\u8fdb\u884c\u7f51\u6bb5\u5339\u914d\uff0c\u6240\u4ee5\u9700\u8981 `in6_addr.__in6_union.__s6_addr[16]`\u3002\u4e0d\u8fc7\u8fd9\u4e48\u4e00\u8bf4\u786e\u5b9e\u8fd9\u4e0d\u5e94\u8be5\u662f\u6211\u4e86\u89e3\u7684\uff0c\u6309\u7167\u4e8c\u7684\u65b9\u6cd5\u91cd\u65b0\u5b9a\u4e00\u4e2a\u7ed3\u6784\u4f53\u5c31\u884c\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : c137rick <\/span>  <\/div>\n
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                                                                 @minami #2 \u786e\u5b9e\uff0c\u8fd9\u65b9\u6cd5\u7b80\u5355\uff0c\u6211\u600e\u4e48\u5c31\u6ca1\u60f3\u5230\uff0c\u8c22\u5566\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u600e\u4e48\u5728 C \u4ee3\u7801\u4e2d\u77e5\u9053\u81ea\u5df1\u7528 C …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/273126"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=273126"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/273126\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=273126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=273126"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=273126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}