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file description\u306f\u3001\u958b\u3044\u305f\u30d5\u30a1\u30a4\u30eb\u306b\u95a2\u3059\u308b\u30ab\u30fc\u30cd\u30eb\u5074\u306e\u72b6\u614b\u3092\u8868\u3057\u307e\u3059\u3002dup\u3067\u8a18\u8ff0\u5b50\u3092\u8907\u88fd\u3059\u308b\u3068\u3001\u7570\u306a\u308b\u6574\u6570\u304b\u3089\u540c\u3058open file description\u3092\u53c2\u7167\u3057\u307e\u3059\u3002fork\u3067\u5f15\u304d\u7d99\u304c\u308c\u305f\u8a18\u8ff0\u5b50\u3082\u3001\u3053\u306e\u5171\u6709\u95a2\u4fc2\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<p>flock(fd, op)\u306f\u3001fd\u304c\u6307\u3059\u958b\u3044\u305f\u30d5\u30a1\u30a4\u30eb\u3078\u30ed\u30c3\u30af\u3092\u8a2d\u5b9a\u3057\u305f\u308a\u89e3\u9664\u3057\u305f\u308a\u3059\u308b\u547c\u3073\u51fa\u3057\u3067\u3059\u3002Linux man-pages\u306eflock(2)\u306f\u3001\u3053\u306e\u30ed\u30c3\u30af\u304copen file description\u3078\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002[1\u3001DESCRIPTION] 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