{"id":563,"date":"2016-11-03T15:25:17","date_gmt":"2016-11-03T07:25:17","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=563"},"modified":"2016-12-01T15:27:18","modified_gmt":"2016-12-01T07:27:18","slug":"freebsd%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=563","title":{"rendered":"FreeBSD\u5b9e\u73b0"},"content":{"rendered":"<p>\u5df2\u7ecf\u8bf4\u4e86\u591a\u79cd\u8fdb\u7a0b\u3001\u8fdb\u7a0b\u7ec4\u3001\u4f1a\u8bdd\u548c\u63a7\u5236\u7ec8\u7aef\u7684\u5c5e\u6027\u3002\u73b0\u5728\u662f\u770b\u4e00\u4e0b\u8fd9\u4e9b\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u7b80\u5355\u6d4f\u89c8\u4e00\u4e0bFreeBSD\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-564\" src=\"http:\/\/blog.5x44.cn\/wp-content\/uploads\/2016\/11\/figure9.12.jpg\" alt=\"figure9-12\" width=\"618\" height=\"502\" srcset=\"https:\/\/www.5x44.cn\/wp-content\/uploads\/2016\/11\/figure9.12.jpg 618w, https:\/\/www.5x44.cn\/wp-content\/uploads\/2016\/11\/figure9.12-300x244.jpg 300w, https:\/\/www.5x44.cn\/wp-content\/uploads\/2016\/11\/figure9.12-332x270.jpg 332w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><\/p>\n<p>\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u6807\u8bb0\u7684\u5b57\u6bb5\uff0c\u4ece<span style=\"color: #993300;\">session<\/span>\u7ed3\u6784\u5f00\u59cb\u3002\u6bcf\u4e2a\u4f1a\u8bdd\u4f1a\u88ab\u5206\u914d\u4e00\u4e2a\u8be5\u7ed3\u6784\uff08\u4e5f\u5c31\u662f<span style=\"color: #993300;\">setsid<\/span>\u88ab\u8c03\u7528\u65f6\uff09\u3002<\/p>\n<ul>\n<li><span style=\"color: #993300;\">s_count<\/span>\u662f\u4f1a\u8bdd\u4e2d\u8fdb\u7a0b\u7ec4\u53f7\u3002\u5f53\u8fd9\u4e2a\u7edf\u8ba1\u5668\u51cf\u5230\u96f6\u65f6\uff0c\u8fd9\u4e2a\u7ed3\u6784\u53ef\u4ee5\u88ab\u91ca\u653e\u3002<\/li>\n<li><span style=\"color: #993300;\">s_leader<\/span>\u662f\u4e00\u4e2a\u6307\u5411\u4f1a\u8bdd\u957f\uff08session leader\uff09\u7684<span style=\"color: #993300;\">proc<\/span>\u7ed3\u6784\u6307\u9488\u3002<\/li>\n<li><span style=\"color: #993300;\">s_ttyvp<\/span>\u662f\u4e00\u4e2a\u6307\u5411\u63a7\u5236\u7ec8\u7aef\u7684<span style=\"color: #993300;\">vnode<\/span>\u7ed3\u6784\u6307\u9488\u3002<\/li>\n<li><span style=\"color: #993300;\">s_ttyp<\/span>\u662f\u4e00\u4e2a\u6307\u5411\u63a7\u5236\u7ec8\u7aef\u7684<span style=\"color: #993300;\">tty<\/span>\u7ed3\u6784\u6307\u9488\u3002<\/li>\n<li><span style=\"color: #993300;\">s_sid<\/span>\u662f\u4f1a\u8bddID\u3002<span style=\"color: #ff0000;\">\u6ce8\u610f<\/span><span style=\"text-decoration: underline;\">\u4f1a\u8bddID<\/span>\u5e76\u4e0d\u662fSingle UNIX Specification\u5b9a\u4e49\u4e2d\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<\/ul>\n<p>\u5f53<span style=\"color: #993300;\">setsid<\/span>\u88ab\u8c03\u7528\u65f6\uff0c\u4e00\u4e2a\u65b0\u7684<span style=\"color: #993300;\">session<\/span>\u7ed3\u6784\u5728\u5185\u6838\u4e2d\u88ab\u5206\u914d\u3002\u73b0\u5728<span style=\"color: #993300;\">s_count<\/span>\u88ab\u8bbe\u7f6e\u62101\uff0c<span style=\"color: #993300;\">s_leader<\/span>\u6307\u5411\u8c03\u7528\u8fdb\u7a0b\u7684<span style=\"color: #993300;\">proc<\/span>\u7ed3\u6784\uff0c<span style=\"color: #993300;\">s_sid<\/span>\u8bbe\u7f6e\u6210\u8fdb\u7a0bID\uff0c\u5e76\u4e14<span style=\"color: #993300;\">s_ttyvp<\/span>\u548c<span style=\"color: #993300;\">s_ttyp<\/span>\u88ab\u8bbe\u7f6e\u6210\u7a7a\u6307\u9488\uff08\u56e0\u4e3a\u65b0\u7684\u4f1a\u8bdd\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef\uff09<\/p>\n<p>\u73b0\u5728\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b<span style=\"color: #993300;\">tty<\/span>\u7ed3\u6784\u3002\u5185\u6838\u4f1a\u4e3a\u6bcf\u4e2a\u7ec8\u7aef\u8bbe\u5907\u548c\u6bcf\u4e2apseudo\u7ec8\u7aef\u8bbe\u5907\u5206\u914d\u4e00\u4e2a\u8be5\u7ed3\u6784\u3002<\/p>\n<ul>\n<li><span style=\"color: #993300;\">t_session<\/span>\u6307\u5411<span style=\"color: #993300;\">session<\/span>\u7ed3\u6784\uff0c\u88ab\u6307\u5411\u7684\u8fd9\u4e2a\u7ed3\u6784\u4ee5\u8be5\u7ec8\u7aef\u505a\u4e3a\u81ea\u5df1\u7684\u63a7\u5236\u7ec8\u7aef\u3002\uff08\u6ce8\u610f\uff1a<span style=\"color: #993300;\">tty<\/span>\u7ed3\u6784\u6307\u5411<span style=\"color: #993300;\">session<\/span>\u7ed3\u6784\uff0c\u53cd\u4e4b\u4ea6\u7136\uff09\u5982\u679c\u7ec8\u7aef\u5931\u53bb\u7126\u70b9\uff08if the terminal loses carrier\uff09\u8fd9\u4e2a\u6307\u9488\u88ab\u7ec8\u7aef\u7528\u6765\u7ed9\u4f1a\u8bdd\u957f\u53d1\u9001hang-up\u4fe1\u53f7\u3002<\/li>\n<li><span style=\"color: #993300;\">t_pgrp<\/span>\u6307\u5411\u524d\u53f0\u8fdb\u7a0b\u7ec4\u7684<span style=\"color: #993300;\">pgrp<\/span>\u7ed3\u6784\u3002\u8fd9\u4e2a\u5b57\u6bb5\u88ab\u7ec8\u7aef\u9a71\u52a8\u53d1\u9001\u4fe1\u53f7\u5230\u524d\u53f0\u8fdb\u7a0b\u7ec4\u3002\u6709\u4e09\u79cd\u7279\u6b8a\u5b57\u7b26\u88ab\u53d1\u9001\u5230\u524d\u53f0\u8fdb\u7a0b\u7ec4\u4e2d\uff08interrupt, quit, suspend\uff09<\/li>\n<li><span style=\"color: #993300;\">t_termios<\/span>\u8be5\u7ed3\u6784\u5305\u542b\u6240\u6709\u8be5\u7ec8\u7aef\u7684\u7279\u6b8a\u5b57\u7b26\u548c\u76f8\u5173\u4fe1\u606f\uff0c\u5982\uff1a\u6ce2\u7279\u7387\uff0c\u662f\u5426\u5f00\u542f\u53cd\u9988\uff08is echo on or off\uff09\uff0c\u7b49\u7b49\u3002<\/li>\n<li><span style=\"color: #993300;\">t_winsize<\/span>\u662f\u4e00\u4e2a<span style=\"color: #993300;\">winsize<\/span>\u7ed3\u6784\uff0c\u5b83\u5305\u542b\u4e86\u5f53\u524d\u7ec8\u7aef\u7a97\u53e3\u5927\u5c0f\u3002\u5f53\u7ec8\u7aef\u7a97\u53e3\u5927\u5c0f\u6539\u53d8\u65f6<span style=\"color: #993300;\">SIGWINCH<\/span>\u4fe1\u53f7\u88ab\u53d1\u9001\u5230\u524d\u53f0\u8fdb\u7a0b\u7ec4\u3002<\/li>\n<\/ul>\n<p>\u6ce8\u610f\u627e\u4e00\u4e2a\u7279\u5b9a\u4f1a\u8bdd\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4\uff0c\u5185\u6838\u5fc5\u987b\u4ee5session\u7ed3\u6784\u5f00\u59cb\uff0c\u4e4b\u540e<span style=\"color: #993300;\">s_ttyp<\/span>\u83b7\u5f97\u63a7\u5236\u7ec8\u7aef\u7684<span style=\"color: #993300;\">tty<\/span>\u7ed3\u6784\uff0c\u5728\u8fd9\u4e4b\u540e<span style=\"color: #993300;\">t_pgrp<\/span>\u83b7\u5f97\u524d\u53f0\u8fdb\u7a0b\u7ec4\u7684<span style=\"color: #993300;\">pgrp<\/span>\u7ed3\u6784\u3002<span style=\"color: #993300;\">pgrp<\/span>\u7ed3\u6784\u5305\u542b\u4e86\u7279\u5b9a\u8fdb\u7a0b\u7ec4\u7684\u4fe1\u606f\u3002<\/p>\n<ul>\n<li><span style=\"color: #993300;\">pg_id<\/span>\u662f\u8fdb\u7a0b\u7ec4ID\u3002<\/li>\n<li><span style=\"color: #993300;\">pg_session<\/span>\u4e3a\u5f53\u524d\u8fdb\u7a0b\u7ec4\u7684\u4f1a\u8bdd\u6307\u5411<span style=\"color: #993300;\">session<\/span>\u7ed3\u6784\u3002<\/li>\n<li><span style=\"color: #993300;\">pg_members<\/span>\u662f\u4e00\u4e2a\u6307\u5411<span style=\"color: #993300;\">proc<\/span>\u7ed3\u6784\u5217\u8868\u7684\u6307\u9488\uff0c\u8be5\u8868\u4e2d\u7684\u8868\u6210\u5458\u90fd\u662f\u5c5e\u4e8e\u8fd9\u4e2a\u8fdb\u7a0b\u7ec4\u3002\u5728<span style=\"color: #993300;\">proc<\/span>\u7ed3\u6784\u4e2d\u7684<span style=\"color: #993300;\">p_pglist<\/span>\u7ed3\u6784\u662f\u4e00\u4e2a\u53cc\u5411\u94fe\u8868\uff0c\u5b83\u5728\u8fdb\u7a0b\u7ec4\u4e2d\u540c\u65f6\u6307\u5411\u524d\u3001\u540e\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u76f4\u5230\u8fdb\u7a0b\u7ec4\u4e2d\u6700\u540e\u4e00\u4e2a\u8fdb\u7a0b\u4e4b\u540e\u9047\u5230\u4e86\u4e00\u4e2a\u7a7a\u6307\u9488\u3002<\/li>\n<\/ul>\n<p>proc\u7ed3\u6784\u5305\u542b\u4e86\u6240\u6709\u5355\u4e2a\u8fdb\u7a0b\u7684\u4fe1\u606f\u3002<\/p>\n<ul>\n<li><span style=\"color: #993300;\">p_pid<\/span>\u5305\u542b\u4e86\u8fdb\u7a0bID<\/li>\n<li><span style=\"color: #993300;\">p_pptr<\/span>\u662f\u4e00\u4e2a\u6307\u5411\u7236\u8fdb\u7a0b\u7684proc\u7ed3\u6784\u7684\u6307\u9488\u3002<\/li>\n<li><span style=\"color: #993300;\">p_pgrp<\/span>\u6307\u5411\u8fdb\u7a0b\u6240\u5c5e\u7684\u8fdb\u7a0b\u7ec4\u7684pgrp\u7ed3\u6784\u3002<\/li>\n<li><span style=\"color: #993300;\">p_pglist<\/span>\u662f\u4e00\u4e2a\u7ed3\u6784\uff0c\u5305\u542b\u4e86\u6307\u5411\u8be5\u8fdb\u7a0b\u7ec4\u4e2d\u524d\u3001\u540e\u4e24\u4e2a\u8fdb\u7a0b\u7684\u6307\u9488<\/li>\n<\/ul>\n<p>\u6700\u540e\uff0c\u8fd8\u6709<span style=\"color: #993300;\">vnode<\/span>\u7ed3\u6784\u3002\u5f53\u63a7\u5236\u7ec8\u7aef\u8bbe\u5907\u88ab\u6253\u5f00\u65f6\uff0c\u8fd9\u4e2a\u7ed3\u6784\u88ab\u5206\u914d\u3002\u8fdb\u7a0b\u4e2d\u6240\u6709\u6307\u5411<span style=\"color: #993300;\">\/dev\/tty<\/span>\u8bbe\u5907\u90fd\u8981\u4f7f\u7528<span style=\"color: #993300;\">vnode<\/span>\u7ed3\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5df2\u7ecf\u8bf4\u4e86\u591a\u79cd\u8fdb\u7a0b\u3001\u8fdb\u7a0b\u7ec4\u3001\u4f1a\u8bdd\u548c\u63a7\u5236\u7ec8\u7aef\u7684\u5c5e\u6027\u3002\u73b0\u5728\u662f\u770b\u4e00\u4e0b\u8fd9\u4e9b\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u7b80\u5355\u6d4f\u89c8\u4e00\u4e0bFreeBSD\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002 \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u6807\u8bb0\u7684\u5b57\u6bb5\uff0c\u4ecesessi&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=563\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-563","post","type-post","status-publish","format-standard","hentry","category-apue"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=563"}],"version-history":[{"count":6,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/563\/revisions"}],"predecessor-version":[{"id":570,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/563\/revisions\/570"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}