{"id":147,"date":"2009-11-16T12:26:17","date_gmt":"2009-11-16T12:26:17","guid":{"rendered":"http:\/\/kumouse.aafox.com\/?p=147"},"modified":"2009-11-16T12:26:17","modified_gmt":"2009-11-16T12:26:17","slug":"%e9%9d%9e%e5%91%bd%e5%90%8dunix-%e5%9f%9f-%e5%a5%97%e6%8e%a5%e5%ad%97-%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.kumouse.com\/?p=147","title":{"rendered":"\u975e\u547d\u540dunix \u57df \u5957\u63a5\u5b57 \u793a\u4f8b"},"content":{"rendered":"<p>\u8fd9\u4e2a\u4e1c\u897f\u548c\u533f\u540d\u7ba1\u9053\u5c31\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\u5440<\/p>\n<blockquote><p>[ssj@main test]$ cat socketpair.c<br \/>#include &lt;stdio.h&gt;<br \/>#include &lt;stdlib.h&gt;<br \/>#include &lt;fcntl.h&gt;<br \/>#include &lt;unistd.h&gt;<br \/>#include &lt;sys\/socket.h&gt;<br \/>#include &lt;string.h&gt;<\/p>\n<p>#define MAX 100<\/p>\n<p>int main(void)<br \/>{<br \/>int sockfd[2],n;<br \/>pid_t pid;<br \/>char buf[MAX];<br \/>bzero(buf,sizeof(buf));<\/p>\n<p>if(socketpair(AF_UNIX,SOCK_STREAM,0,sockfd)==-1)<br \/>  {perror(&quot;Fail to socketpair&quot;);exit(1);}<\/p>\n<p>pid=fork();<br \/>if(pid&lt;0){perror(&quot;Fail to fork&quot;);exit(1);}<br \/>else if(pid==0)<br \/>{<br \/>  close(sockfd[0]);<br \/>  strcpy(buf,&quot;hello parent&quot;);<br \/>  n=strlen(buf);<\/p>\n<p>  if(write(sockfd[1],buf,n)==-1)<br \/>  {<br \/>    perror(&quot;Fail to write&quot;);<br \/>    exit(1);<br \/>  }<br \/>  printf(&quot;child closen&quot;);<\/p>\n<p>}<br \/>else<br \/>{<br \/>close(sockfd[1]);<\/p>\n<p>if((n=read(sockfd[0],buf,MAX))==-1)<br \/>  {<br \/>    perror(&quot;Fail to read&quot;);exit(1);<br \/>  }<br \/>\/\/printf(&quot;%dn&quot;,n);<br \/>\/\/n=strlen(buf);<br \/>\/\/printf(&quot;%dn&quot;,n);<br \/>buf[n]=&#39;\u0000&#39;;<br \/>printf(&quot;from child:%sn&quot;,buf);<\/p>\n<p>if(wait(NULL)==-1){perror(&quot;Fail to wait&quot;);exit(1);}<\/p>\n<p>printf(&quot;the parent donen&quot;);<br \/>}<br \/>return 0;<\/p>\n<p>}<\/p><\/blockquote>\n<p>\u5728\u6253\u5370\u5b57\u7b26\u4e32\u4e4b\u524d\u7684buf[n]=&#39;\u0000&#39;;\u53ea\u662f\u4e3a\u4e86\u6d4b\u8bd5\uff0c\u5982\u679c\u4e0d\u7ed9buf\u8d4b\u521d\u503c\uff0c\u6253\u5370\u7ed3\u679c\u4f1a\u6709\u6240\u4e0d\u540c\uff0c\u6ce8\u610f\u5b57\u7b26\u4e32\u7684\u2018\u0000\u2019<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e2a\u4e1c\u897f\u548c\u533f\u540d\u7ba1\u9053\u5c31\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\u5440 [ssj@main test]$ cat socketpair.c#inc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-147","post","type-post","status-publish","format-standard","hentry","category-linux-c"],"_links":{"self":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=147"}],"version-history":[{"count":0,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/147\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}