{"author_url":"https://blog.hatena.ne.jp/nash1234/","categories":["Linux\u30e1\u30e2"],"height":"190","description":"\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 http://linuxjm.sourceforge.jp/html/LDP_man-pages/man7/credentials.7.html \u3088\u308a\u5f15\u7528\uff1a \u5404\u30d7\u30ed\u30bb\u30b9\u306f\u30bb\u30c3\u30b7\u30e7\u30f3 ID \u3068\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID \u3092\u6301\u3064\u3002 \u3053\u308c\u3089\u306e ID \u306f\u3069\u3061\u3089\u3082 pid_t \u578b\u3067\u8868\u73fe\u3055\u308c\u308b\u3002 \u30d7\u30ed\u30bb\u30b9\u306f\u3001\u305d\u308c\u305e\u308c getsid(2), getpgrp(2) \u3092\u4f7f\u3063\u3066\u81ea\u5206\u306e\u30bb\u30c3\u30b7\u30e7\u30f3 ID\u3001\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID \u3092\u53d6\u5f97\u3067\u304d\u308b\u3002fork(2) \u3067\u751f\u6210\u3055\u308c\u305f\u5b50\u30d7\u30ed\u30bb\u30b9\u306f\u89aa\u30d7\u30ed\u30bb\u30b9\u306e\u30bb\u30c3\u30b7\u30e7\u30f3 ID \u3068\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID \u3092\u7d99\u627f\u3059\u308b\u3002\u30d7\u30ed\u30bb\u30b9\u306e\u30bb\u30c3\u30b7\u30e7\u30f3 ID \u3068\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID \u306f\u2026","blog_title":"nash\u2019s blog","provider_name":"Hatena Blog","published":"2015-01-18 05:32:11","image_url":null,"title":"\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7","provider_url":"https://hatena.blog","version":"1.0","type":"rich","author_name":"nash1234","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnash1234.hatenadiary.org%2Fentry%2F20150118%2F1421613131\" title=\"\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 - nash\u2019s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://nash1234.hatenadiary.org/entry/20150118/1421613131","width":"100%","blog_url":"https://nash1234.hatenadiary.org/"}