{"id":119,"date":"2020-06-02T10:47:50","date_gmt":"2020-06-02T01:47:50","guid":{"rendered":"https:\/\/speedloger.com\/?p=119"},"modified":"2020-06-02T10:47:50","modified_gmt":"2020-06-02T01:47:50","slug":"windows%e3%81%ae%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"https:\/\/speedloger.com\/?p=119","title":{"rendered":"Windows\u306e\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u306b\u3064\u3044\u3066"},"content":{"rendered":"<h1>\u53c2\u7167\u5143<\/h1>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fdnobori%2Fposts%2F2142836202459674&width=500\" width=\"500\" height=\"337\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowTransparency=\"true\" 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\u5727\u7e2e\u5c5e\u6027\u300d\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3001\u30b3\u30d4\u30fc\u5148\u306b\u5bfe\u3057\u3066\u3082\u3053\u306e\u5c5e\u6027\u3092\u518d\u73fe\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u305d\u3046\u3057\u306a\u3051\u308c\u3070\u3001\u4fdd\u5b58\u5148\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5c5e\u6027\u304c\u9069\u7528\u3055\u308c\u3066\u3057\u307e\u3046\u3002\u3068\u3053\u308d\u304c\u3001\u3053\u306e\u5c5e\u6027\u306f\u6a19\u6e96\u306e\u30d5\u30a1\u30a4\u30eb API \u3067\u306f\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u306a\u3093\u3068 DeviceIoControl \u3067\u7279\u6b8a\u306a\u65b9\u6cd5\u3092\u7528\u3044\u3066\u5c5e\u6027\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3042\u308b\u3002\u305d\u3057\u3066\u3001\u5727\u7e2e\u5c5e\u6027\u306f\u3001\u3059\u3067\u306b\u30c7\u30fc\u30bf\u304c\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3057\u3066\u9069\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u5927\u5909\u9577\u3044\u6642\u9593\u304c\u304b\u304b\u308b\u4e0a\u306b\u3001Windows \u306e\u30d0\u30b0 (\u4ed5\u69d8 ?) \u3068\u3057\u3066\u3001CancelIo \u3068\u3044\u3046\u30ad\u30e3\u30f3\u30bb\u30eb\u7528 API \u304c\u52b9\u304b\u306a\u3044 (\u3064\u307e\u308a\u3001\u4e00\u5ea6\u5727\u7e2e\u3092\u958b\u59cb\u3057\u3066\u3057\u307e\u3046\u3068\u3001Windows \u3092\u5f37\u5236\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3059\u308b\u3057\u304b\u3001\u5727\u7e2e\u51e6\u7406\u3092\u4e2d\u65ad\u3067\u304d\u306a\u3044) \u3068\u3044\u3046\u554f\u984c\u304c\u3042\u308b\u306e\u3067\u3001\u5341\u5206\u306b\u8b66\u6212\u3092\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n<p>(9)\u266a \u5f53\u7136\u3001\u5143\u30d5\u30a1\u30a4\u30eb\u306f NTFS \u306e\u6697\u53f7\u5316\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0 (EFS) \u306b\u3088\u3063\u3066\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u305d\u3057\u3066\u3001\u6697\u53f7\u5316\u304c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u2460 \u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3057\u3088\u3046\u3068\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u305d\u306e\u79d8\u5bc6\u30ad\u30fc\u3092\u6709\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3001\u2461 \u79d8\u5bc6\u30ad\u30fc\u306f\u6709\u3057\u3066\u3044\u306a\u3044\u304c\u7ba1\u7406\u8005\u6a29\u9650\u3092\u6709\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3001\u2462 \u79d8\u5bc6\u30ad\u30fc\u306f\u6709\u3057\u3066\u3044\u306a\u3044\u3057\u7ba1\u7406\u8005\u6a29\u9650\u3082\u6709\u3057\u3066\u3044\u306a\u3044\u30b1\u30fc\u30b9\u3001\u306e 3 \u901a\u308a\u304c\u8003\u3048\u3089\u308c\u308b\u3002\u305d\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5e0c\u671b\u306b\u3088\u308a\u3001A \u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u5ea6\u30e1\u30e2\u30ea\u4e0a\u3067\u5fa9\u53f7\u5316\u3057\u3001\u518d\u6697\u53f7\u5316\u3057\u3066\u4fdd\u5b58\u3057\u3066\u6b32\u3057\u3044\u5834\u5408\u3001B \u30d5\u30a1\u30a4\u30eb\u3092\u5fa9\u53f7\u5316\u305b\u305a\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u751f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u307e\u307e\u30d3\u30c3\u30c8\u5217\u3068\u3057\u3066\u30b3\u30d4\u30fc\u3057\u3066\u307b\u3057\u3044\u5834\u5408\u3001C \u30d5\u30a1\u30a4\u30eb\u306f\u5fa9\u53f7\u5316\u3057\u3001\u30b3\u30d4\u30fc\u5148\u3067\u306f\u5e73\u6587\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u307b\u3057\u3044\u5834\u5408\u3001\u306e 3 \u901a\u308a\u304c\u8003\u3048\u3089\u308c\u308b\u3002\u3053\u306e 3 \u00d7 3 = 9 \u901a\u308a\u306e\u3059\u3079\u3066\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3001\u53ef\u80fd\u306a\u9650\u308a\u6b63\u3057\u304f\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3053\u3068\u304c\u3001\u30d7\u30ed\u306b\u306f\u6c42\u3081\u3089\u308c\u308b\u3002\u2461 \u306e\u30b1\u30fc\u30b9\u3067\u306f\u3001ReadEncryptedFileRaw \u3092\u7528\u3044\u3066\u3001\u9375\u3092\u6301\u3063\u3066\u3044\u306a\u304f\u3066\u3082\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u751f\u306e\u7269\u7406\u7684\u306a\u30d3\u30c3\u30c8\u30c7\u30fc\u30bf\u306e\u30b3\u30d4\u30fc\u304c\u53ef\u80fd\u3067\u3042\u308b\u304b\u3089\u3001\u30d7\u30ed\u306f\u3053\u308c\u3092\u6d3b\u7528\u3059\u308b\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n<p>(10)\u266a \u5f53\u7136\u3001\u5143\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u5143\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3001\u307e\u305f\u306f\u5148\u30d5\u30a1\u30a4\u30eb\u30fb\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306e\u969b\u306b\u3001NTFS \u3067 ACL \u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u30a2\u30af\u30bb\u30b9\u6a29\u304c\u7121\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u306f\u30ed\u30fc\u30ab\u30eb\u306e\u5834\u5408\u3082\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d5\u30a1\u30a4\u30eb\u5171\u6709\u4e0a\u306e UNC \u30d1\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u3082\u3001\u540c\u69d8\u3067\u3042\u308b\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u4e00\u822c\u7684\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \/ \u5fa9\u5143\u3059\u308b\u305f\u3081\u306b\u30b3\u30d4\u30fc\u3092\u3059\u308b\u306e\u3067\u3042\u308b\u304b\u3089\u3001\u5f53\u7136\u3001NTFS \u306b\u3088\u308b\u30ed\u30fc\u30ab\u30eb\u307e\u305f\u306f\u30ea\u30e2\u30fc\u30c8\u306e\u30a2\u30af\u30bb\u30b9\u5236\u9650\u306f\u7121\u8996\u3057\u3066\u30b3\u30d4\u30fc\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u4e00\u822c\u7684\u306b\u306f\u7981\u6b62\u3055\u308c\u3066\u3044\u308b\u304c\u3001AdjustTokenPrivileges \u306a\u3069\u306e API \u3092\u7528\u3044\u3066\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u7279\u6b8a\u6a29\u9650\u3092\u6709\u52b9\u5316\u3057\u305f\u5f8c\u3001CreateFile API \u306b\u304a\u3044\u3066 FILE_FLAG_BACKUP_SEMANTICS \u3092\u6307\u5b9a\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u958b\u304f\u3053\u3068\u306b\u3088\u308a\u3001NTFS \u306e ACL \u3092\u5b8c\u5168\u306b\u7121\u8996\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u304c\u53ef\u80fd\u306b\u306a\u308b\u306e\u3067\u3042\u308b\u3002Windows \u306e\u30d7\u30ed\u306f\u3001\u5f53\u7136\u3001\u3053\u306e\u3088\u3046\u306a\u3053\u3068\u3092\u3059\u308b\u30b3\u30fc\u30c9\u3092\u3001\u7121\u610f\u8b58\u306b\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u306f\u305a\u3067\u3042\u308b\u3002<\/p>\n<p>(11)\u266a \u5f53\u7136\u3001(3) \u3067\u8aac\u660e\u3057\u305f\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u4ed8\u304d\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u51e6\u7406\u3092\u884c\u306a\u304a\u3046\u3068\u3059\u308b\u969b\u306b\u3001\u30b3\u30d4\u30fc\u5143\u30d5\u30a1\u30a4\u30eb\u304c NTFS \u306b\u3088\u3063\u3066\u30a2\u30af\u30bb\u30b9\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001(3) \u3067\u8aac\u660e\u3057\u305f\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u7121\u8996\u306e\u7279\u6b8a\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304c\u3001\u306a\u3093\u3068\u3001(3) \u3067\u8aac\u660e\u3057\u305f FindFirstStreamW API \u3092\u7528\u3044\u305f\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u4e00\u89a7\u306e\u5217\u6319\u51e6\u7406\u306b\u304a\u3044\u3066\u306f\u3001NTFS \u306e\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u3092\u7121\u8996\u3057\u3066\u5217\u6319\u304c\u3067\u304d\u306a\u3044\u3002\u3053\u308c\u306f\u660e\u3089\u304b\u306b Windows \u306e\u30d0\u30b0 (\u4ed5\u69d8 ?) \u3067\u3042\u308a\u3001\u5168\u304f\u3051\u3057\u304b\u3089\u3093\u3053\u3068\u3067\u3042\u308b\u3002Win32 SDK \u306e API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u898b\u6e21\u3057\u305f\u304c\u3001NTFS \u306e\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u3092\u7121\u8996\u3057\u305f\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u5217\u6319\u3092\u53ef\u80fd\u3068\u3059\u308b API \u306f 1 \u3064\u3082\u5b58\u5728\u3057\u306a\u304b\u3063\u305f\u3002\u305d\u308c\u3067\u306f Windows \u6a19\u6e96\u306e ntbackup (Windows XP \u307e\u3067\u4ed8\u3044\u3066\u3044\u305f) \u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066 NTFS \u306e\u30a2\u30af\u30bb\u30b9\u6a29\u9650\u3092\u7121\u8996\u3057\u305f\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u30b3\u30d4\u30fc\u3092\u3057\u3066\u3044\u308b\u306e\u304b? \u307e\u305f\u3001\u300cBackupExec\u300d\u306a\u3069\u306e\u5e02\u8ca9\u30bd\u30d5\u30c8\u3067\u306f\u3069\u306e\u3088\u3046\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u306e\u304b? \u3053\u3053\u3067 Windows \u306e\u30d7\u30ed\u5fc5\u643a\u306e\u9006\u30a2\u30bb\u30f3\u30d6\u30e9\u306e\u51fa\u756a\u3067\u3042\u308b\u3002\u8abf\u67fb\u3057\u305f\u3068\u3053\u308d\u3001\u306a\u3093\u3068\u3001\u975e\u516c\u958b DLL\u300cntdll.dll\u300d\u306e\u300cNtQueryInformationFile\u300d\u3092\u7528\u3044\u3066\u3001NTFS \u6a29\u9650\u3092\u7121\u8996\u3057\u305f\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u5217\u6319\u304c\u53ef\u80fd\u306a\u6a5f\u80fd\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u305f\u306e\u3067\u3042\u308b\u3002\u3053\u308c\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u3088\u3046\u3084\u304f\u30d5\u30a1\u30a4\u30eb\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30e2\u30fc\u30c9\u306b\u304a\u3051\u308b\u4ee3\u66ff\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u6b63\u3057\u3044\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u53ef\u80fd\u306b\u306a\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n<p>(12)\u266a \u5f53\u7136\u3001\u30b3\u30d4\u30fc\u5143\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3068\u3001\u30b3\u30d4\u30fc\u5148\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3068\u304c\u3001\u7570\u306a\u308b NTFS \u30af\u30e9\u30b9\u30bf\u30b5\u30a4\u30ba\u3067\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u5b9f\u88c5\u4e0a\u306e\u90fd\u5408\u306b\u3088\u308a\u3001NTFS \u30af\u30e9\u30b9\u30bf\u30b5\u30a4\u30ba\u306b\u3088\u3063\u3066\u3001\u6700\u5927\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u7570\u306a\u308b\u3002\u305f\u3068\u3048\u3070\u300164KB \u30af\u30e9\u30b9\u30bf\u306e\u5834\u5408\u3001\u5b9f\u9a13\u3057\u305f\u3068\u3053\u308d\u30011 \u500b\u3042\u305f\u308a\u7d04 17TB \u306e\u30d5\u30a1\u30a4\u30eb\u304c\u6700\u5927\u30b5\u30a4\u30ba\u3067\u3042\u308a\u3001\u3053\u308c\u3092\u8d85\u3048\u308b\u3068\u66f8\u304d\u8fbc\u307f\u304c\u3046\u307e\u304f\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u3002\u30d7\u30ed\u306f\u3053\u306e\u3088\u3046\u306a\u70b9\u306b\u3082\u6c17\u3092\u914d\u3089\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n<p>(13)\u266a \u5f53\u7136\u3001\u5143\u30d5\u30a1\u30a4\u30eb\u306f NTFS \u30b9\u30d1\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb (Sparse File) \u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u3053\u306e\u5834\u5408\u306f\u3001\u30b3\u30d4\u30fc\u5148\u30d5\u30a1\u30a4\u30eb\u3082\u30b9\u30d1\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u3068\u3059\u308b\u3053\u3068\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u4e07\u4eba\u304c\u671f\u5f85\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002\u305d\u3053\u3067\u3001Windows \u306e\u30d7\u30ed\u306f\u3001DeviceIoControl \u3092\u7528\u3044\u3066\u3001\u30b9\u30d1\u30fc\u30b9\u9818\u57df\u30d6\u30ed\u30c3\u30af\u3092\u5217\u6319\u3057\u3001\u6b63\u3057\u304f\u3053\u308c\u3092\u30b3\u30d4\u30fc\u5148\u30d5\u30a1\u30a4\u30eb\u306b\u518d\u73fe\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u308b\u3053\u3068\u304c\u306a\u3044\u3002\u306a\u304a\u3001Linux \u306a\u3069\u306e\u751f\u6613\u3057\u3044 OS \u306e\u751f\u6613\u3057\u3044 ext4 \u306a\u3069\u3068\u306f\u7570\u306a\u308a\u3001\u5358\u306b seek \u3092\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u98db\u3070\u3057\u305f\u3068\u3057\u3066\u3082\u81ea\u52d5\u7684\u306b\u30b9\u30d1\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u3057\u3066\u304f\u308c\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u307e\u305a DeviceIoControl \u3067\u7279\u6b8a\u306a\u64cd\u4f5c\u3092\u3057\u306a\u3051\u308c\u3070\u6c7a\u3057\u3066\u30b9\u30d1\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u306a\u3063\u3066\u304f\u308c\u306a\u3044\u306e\u3067\u3042\u308b\u304b\u3089\u3001\u5341\u5206\u6ce8\u610f\u3059\u308b\u3053\u3068\u3002<\/p>\n<p>(14)\u266a \u5f53\u7136\u3001\u5143\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u5143\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e NTFS \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c5e\u6027\u306f\u3001\u65b0\u305f\u306a\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30b3\u30d4\u30fc\u3055\u308c\u308b\u3053\u3068\u3092\u30e6\u30fc\u30b6\u30fc\u304c\u671f\u5f85\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30b3\u30d4\u30fc\u3092\u5fe0\u5b9f\u306b\u5b9f\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u3053\u3067\u3001NTFS \u306e\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u306f\u3001\u2460 \u8907\u96d1\u306a\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u30ea\u30b9\u30c8 (ACL)\u3001\u2461 \u6240\u6709\u8005\u30c7\u30fc\u30bf\u3001\u2462 (UI \u4e0a\u3067\u306f\u8868\u793a\u3055\u308c\u306a\u3044\u304c NTFS \u4e0a\u306b\u306f\u5b58\u5728\u3059\u308b) \u30b0\u30eb\u30fc\u30d7\u6240\u6709\u8005\u30c7\u30fc\u30bf\u3001\u2463 \u76e3\u67fb\u8a2d\u5b9a\u3001\u306e 4 \u3064\u304c\u5b58\u5728\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u3089\u3092\u6f0f\u308c\u306a\u304f\u30b3\u30d4\u30fc\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u2460 \u8907\u96d1\u306a\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u30ea\u30b9\u30c8 (ACL) \u306f\u3001\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u30a8\u30f3\u30c8\u30ea (ACE) \u306e\u30ea\u30b9\u30c8\u3067\u3042\u308b\u304c\u3001\u305d\u308c\u305e\u308c\u306e ACE \u306b\u306f\u3001\u7d99\u627f\u95a2\u4fc2\u304c\u3042\u308a\u3001\u300c\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u307f\u300d\u3001\u300c\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304a\u3088\u3073\u30b5\u30d6\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u300d\u3001\u300c\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304a\u3088\u3073\u30b5\u30d6\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304a\u3088\u3073\u305d\u306e\u4e0b\u90e8\u306e\u3059\u3079\u3066\u306e\u30b5\u30d6\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u300d\u306e 3 \u7a2e\u985e\u304c\u5b58\u5728\u3059\u308b\u3002\u307e\u305f\u3001\u4e0a\u4f4d\u306e\u89aa\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u306e\u7d99\u627f\u3092\u53d7\u3051\u5165\u308c\u308b\u304b\u3069\u3046\u304b\u306e\u30d5\u30e9\u30b0\u304c\u5b58\u5728\u3059\u308b\u3002\u3053\u308c\u3089\u306b\u5341\u5206\u6ce8\u610f\u3057\u3066 NTFS ACL \u3092\u30b3\u30d4\u30fc\u5148\u3067\u518d\u73fe\u3059\u308b\u3053\u3068\u3002\u306a\u304a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u5171\u6709\u30d5\u30a9\u30eb\u30c0\u306b\u304a\u3044\u3066\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30de\u30b7\u30f3\u3067\u5b58\u5728\u3057\u306a\u3044 SID \u306e\u30e6\u30fc\u30b6\u30fc\u3084\u30b0\u30eb\u30fc\u30d7\u306b\u5bfe\u3059\u308b ACL \u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u308b\u304c\u3001\u305d\u308c\u3082\u6b63\u3057\u304f\u30b3\u30d4\u30fc\u5148\u3067\u518d\u73fe\u3057\u306a\u3051\u308c\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u671f\u5f85\u3092\u88cf\u5207\u308b\u3053\u3068\u306b\u306a\u308b\u3067\u3042\u308d\u3046\u3002<\/p>\n<p>(15)\u266a \u5f53\u7136\u3001\u4e0a\u8a18\u3059\u3079\u3066\u306e\u30b3\u30d4\u30fc\u51e6\u7406\u306f\u3001\u975e\u540c\u671f\u306b (\u3064\u307e\u308a\u3001\u3044\u3064\u3067\u3082\u547c\u3073\u51fa\u3057\u5143\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u3063\u3066\u53d6\u6d88\u3057\u53ef\u80fd\u306a\u72b6\u614b\u3067) \u884c\u306a\u308f\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u306b\u306f\u6642\u9593\u304c\u304b\u304b\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3044\u3064\u3067\u3082\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u305f\u3044\u3068\u601d\u3046\u306e\u3067\u3042\u308b\u3002\u305d\u306e\u305f\u3081\u306b\u306f\u3001\u901a\u5e38\u306e\u65b9\u6cd5\u3067 ReadFile, WriteFile, DeviceIoControl \u3092\u547c\u3093\u3067\u306f\u306a\u3089\u306a\u3044\u3002Windows \u306e\u30d7\u30ed\u3060\u3051\u304c\u5229\u7528\u3067\u304d\u308b\u3042\u306e\u7d20\u6674\u3089\u3057\u3044\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\u30c9\u69cb\u9020\u4f53\u3092\u8a2d\u5b9a\u3057\u305f I\/O \u5b8c\u4e86\u30dd\u30fc\u30c8\u3092\u7528\u3044\u3066\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3042\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3001\u8907\u6570\u306e\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u4e26\u5217\u3057\u3066\u5b9f\u884c\u3067\u304d\u308b\u3057\u3001\u3044\u3064\u3067\u3082 CancelIo \u3092\u7528\u3044\u3066\u9014\u4e2d\u3067\u30ad\u30e3\u30f3\u30bb\u30eb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u306a\u304a\u3001CancelIo \u3092\u7121\u8996\u3059\u308b Windows API \u3082\u3042\u308b\u304b\u3089 (\u4f8b: NTFS \u5727\u7e2e\u51e6\u7406)\u3001\u8b66\u6212\u3092\u5fd8\u308c\u3066\u306f\u306a\u3089\u306a\u3044\u3002<\/p>\n<p>(16)\u266a \u5f53\u7136\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u3092\u9014\u4e2d\u3067\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u305f\u5834\u5408\u306f\u3001\u4e2d\u9014\u534a\u7aef\u306a\u72b6\u614b\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u898b\u3048\u306a\u3044\u3088\u3046\u306b\u3001\u3044\u3063\u305f\u3093\u30b3\u30d4\u30fc\u4e2d\u306e\u5b9b\u5148\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3057\u3001\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u524d\u306b\u623b\u3055\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u524d\u306e\u72b6\u614b\u306b\u623b\u3059\u305f\u3081\u306e\u826f\u3044\u65b9\u6cd5\u306f\u3001\u30b3\u30d4\u30fc\u3092\u958b\u59cb\u3059\u308b\u524d\u306b\u3001\u307e\u305a\u3001\u5b9b\u5148\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u540c\u4e00\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u4e0a\u306e\u5225\u306e\u5834\u6240\u306b\u79fb\u52d5\u3057\u3066\u304a\u304d (\u3053\u306e\u969b\u306e\u30b3\u30b9\u30c8\u306f\u307b\u307c 0 \u3067\u3042\u308b)\u3001\u30ad\u30e3\u30f3\u30bb\u30eb\u304c\u767a\u751f\u3057\u305f\u3089\u518d\u5ea6\u79fb\u52d5\u3092\u3057\u3066\u5143\u306e\u5834\u6240\u306b\u623b\u3059\u3001\u30b3\u30d4\u30fc\u304c\u5b8c\u4e86\u3057\u305f\u3089\u305d\u306e\u79fb\u52d5\u5148\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u3001\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3042\u308b\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u4e00\u9023\u306e\u52d5\u4f5c\u306f\u30a2\u30c8\u30df\u30c3\u30af\u3067\u306a\u3044\u306e\u3067\u3001\u30d7\u30ed\u30bb\u30b9\u304c\u30af\u30e9\u30c3\u30b7\u30e5\u3057\u305f\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u3063\u3066\u5f37\u5236\u7d42\u4e86\u3055\u308c\u305f\u308a\u3001\u307e\u305f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u505c\u6b62\u3057\u305f\u308a\u3057\u305f\u5834\u5408\u306b\u3001\u4e0d\u6574\u5408\u304c\u767a\u751f\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u306f\u3001Transactional NTFS \u3068\u3044\u3046\u3082\u306e\u3092\u4f7f\u3046\u3068\u826f\u3044\u3089\u3057\u3044\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u5341\u5206\u9577\u3051\u305f Windows \u306e\u30d7\u30ed\u3067\u3042\u3063\u3066\u3082\u305d\u3053\u307e\u3067\u8e0f\u307f\u8fbc\u3093\u3067\u3044\u308b\u4f8b\u306f\u5c11\u306a\u3044\u3002<\/p>\n<p>(17)\u266a \u5f53\u7136\u3001\u30b3\u30d4\u30fc\u5143\u30d5\u30a1\u30a4\u30eb\u304c\u3001\u6392\u4ed6\u30e2\u30fc\u30c9\u3067\u5225\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u3063\u3066\u958b\u304b\u308c\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u3053\u306e\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3053\u3046\u3068\u3059\u308b\u3068\u5931\u6557\u3059\u308b\u3002\u307e\u305f\u3001\u30b3\u30d4\u30fc\u5143\u30d5\u30a1\u30a4\u30eb\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084 VM \u30a8\u30f3\u30b8\u30f3\u306a\u3069\u306b\u3088\u3063\u3066\u5e38\u6642\u8aad\u307f\u66f8\u304d\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u3053\u306e\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u3066\u3082\u3001\u8aad\u307f\u53d6\u308a\u4e2d\u306b\u4e00\u8cab\u6027\u304c\u5931\u308f\u308c\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306b\u3001\u30d7\u30ed\u304c\u66f8\u304f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u3001\u5f53\u7136\u3001Volume Shadow Copy (VSS) \u306e COM API \u3092\u7528\u3044\u3066 NTFS \u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u53d6\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u5341\u5206\u9577\u3051\u305f Windows \u306e\u30d7\u30ed\u3067\u3042\u3063\u3066\u3082\u305d\u3053\u307e\u3067\u8e0f\u307f\u8fbc\u3093\u3067\u3044\u308b\u4f8b\u306f\u5c11\u306a\u3044\u3002<\/p>\n<p>(18)\u266a \u5f53\u7136\u3001\u30e6\u30fc\u30b6\u30fc\u306f Windows 95 \uff5e Windows 10 \u306e\u3059\u3079\u3066\u306e Windows \u4e0a\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3042\u308b\u3002\u3068\u3053\u308d\u3067\u3001\u4e0a\u8a18\u306e\u5404\u7a2e API \u306f\u3001\u305d\u308c\u305e\u308c\u3001\u7279\u5b9a\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e Windows \u4ee5\u964d\u3067\u5b9f\u88c5\u3055\u308c\u305f\u3082\u306e\u304c\u591a\u3044\u306e\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u969b\u306b\u306f\u3001\u547c\u3073\u51fa\u305d\u3046\u3068\u3057\u3066\u3044\u308b\u6a5f\u80fd\u304c\u3053\u306e Windows \u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u6ce8\u610f\u6df1\u304f\u691c\u67fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u307e\u305f\u3001\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u6a29\u9650\u306b\u3082\u6ce8\u610f\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3055\u3089\u306b\u3001\u4e00\u90e8\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f Unicode \u7248 API \u304c\u5229\u7528\u4e0d\u53ef\u80fd\u306a\u306e\u3067\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u3092\u5b9f\u65bd\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002Windows 9x \u3092\u5207\u308a\u6368\u3066\u308b\u3068\u3044\u3046\u3053\u3068\u3082\u5341\u5206\u691c\u8a0e\u306b\u5024\u3059\u308b\u306e\u3067\u3042\u308b\u304c\u3001\u672a\u3060 Windows 9x \u306f\u8272\u3005\u306a\u30b7\u30b9\u30c6\u30e0 (\u7279\u306b\u7523\u696d\u7528\u30b7\u30b9\u30c6\u30e0\u306a\u3069) \u3067\u73fe\u5f79\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3042\u308a\u3001\u300c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30d7\u30ed\u30b0\u30e9\u30e0\u300d\u3068\u3044\u3046\u3082\u306e\u306f\u3001\u307e\u3055\u306b\u305d\u306e\u3088\u3046\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u542b\u3081\u305f\u3059\u3079\u3066\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u52d5\u4f5c\u3057\u306a\u3044\u3068\u610f\u5473\u304c\u306a\u3044\u306e\u3067\u3042\u308b\u304b\u3089\u3001\u3053\u308c\u3089\u306e\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e Windows \u3092\u5b89\u6613\u306b\u5207\u308a\u6368\u3066\u308b\u3053\u3068\u306a\u3069\u3001\u3067\u304d\u306a\u3044\u306e\u3067\u3042\u308b\u3002<\/p>\n<p>(19)\u266a\u266b\u266a\u266b\u266a\u266b \u6700\u5927\u9650\u306e\u6050\u6016\uff01\u5f53\u7136\u3001Windows API \u306e\u30d5\u30a1\u30a4\u30eb API \u306e\u4ed5\u69d8\u3067\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u307f\u30e2\u30fc\u30c9\u3067\u958b\u3044\u305f\u5f8c\u306b\u3001UNIX \u306e\u3044\u308f\u3086\u308b lseek \u3084 ftruncate \u306b\u76f8\u5f53\u3059\u308b API \u3067\u3042\u308b\u3001SetFilePointer \u304a\u3088\u3073 SetEndOfFile \u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u3092\u62e1\u5f35\u307e\u305f\u306f\u7e2e\u5c0f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3060\u304c\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u62e1\u5f35\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u6700\u5927\u9650\u306e\u7528\u5fc3\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002UNIX \u306b\u304a\u3044\u3066\u306f\u3001lseek \u3084 ftruncate \u3067\u30d5\u30a1\u30a4\u30eb\u3092\u62e1\u5f35\u3057\u305f\u5834\u5408\u306f\u3001\u62e1\u5f35\u9818\u57df\u306f\u30bc\u30ed\u30af\u30ea\u30a2\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u3002\u3068\u3053\u308d\u304c\u3001\u306a\u3093\u3068\u3001Windows \u306e\u5834\u5408\u3001API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u7528\u5fc3\u6df1\u304f\u76ee\u3092\u76bf\u306e\u3088\u3046\u306b\u3057\u3066\u8aad\u3093\u3060\u65b9\u306a\u3089\u3070\u8ab0\u3067\u3082\u522e\u76ee\u3059\u308b\u3053\u3068\u304c\u66f8\u304b\u308c\u3066\u3044\u308b\u306e\u3067\u3042\u308b\u3002\u3059\u306a\u308f\u3061\u3001Windows \u3067\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u62e1\u5f35\u3057\u305f\u5834\u5408\u306f\u3001\u300c\u5143\u306e EOF \u304b\u3089\u65b0\u3057\u3044 EOF \u307e\u3067\u306e\u9818\u57df\u306f\uff08\u5b9f\u969b\u306b\u66f8\u304d\u8fbc\u307f\u304c\u884c\u308f\u308c\u305f\u9818\u57df\u3092\u9664\u304d\uff09\u521d\u671f\u5316\u3055\u308c\u307e\u305b\u3093\u3002\u300d(SetFilePointer API \u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8)\u3001\u300c\u5143\u306e EOF \u306e\u4f4d\u7f6e\u3068\u65b0\u3057\u3044\u4f4d\u7f6e\u306e\u9593\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u306f\u672a\u5b9a\u7fa9\u3067\u3059\u3002\u300d(SetEndOfFile \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8) \u306e\u3068\u304a\u308a\u3001\u62e1\u5f35\u3055\u308c\u305f\u90e8\u5206\u306b\u306f\u300c\u672a\u5b9a\u7fa9\u306e\u30c7\u30fc\u30bf\u300d(\uff01) \u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u4ed5\u69d8\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3042\u308b\u3002\u3064\u307e\u308a\u3001Windows \u306b\u304a\u3051\u308b\u30d5\u30a1\u30a4\u30eb\u62e1\u5f35\u306b\u304a\u3044\u3066\u3001\u62e1\u5f35\u9818\u57df\u304c\u30bc\u30ed\u30af\u30ea\u30a2\u3055\u308c\u3066\u3044\u308b\u4fdd\u8a3c\u306f\u5168\u304f\u7121\u3044\u3002\u5b9f\u88c5\u4e0a\u3001\u5076\u7136\u30bc\u30ed\u30af\u30ea\u30a2\u3055\u308c\u3066\u3044\u308b\u304b\u3082\u77e5\u308c\u306a\u3044\u3057\u3001\u300c\u672a\u5b9a\u7fa9\u306e\u30c7\u30fc\u30bf\u300d(\uff01)\u3001\u3064\u307e\u308a\u3001\u30bc\u30ed\u3067\u306a\u3044\u30b4\u30df\u30c7\u30fc\u30bf\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3082\u77e5\u308c\u306a\u3044\u306e\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u8aa0\u306b\u56f0\u3063\u305f\u3053\u3068\u3067\u3042\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3059\u308b\u969b\u306b\u3001\u30b3\u30d4\u30fc\u5143\u30d5\u30a1\u30a4\u30eb\u304c\u5de8\u5927\u306a\u30bc\u30ed\u304c\u9023\u7d9a\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u5143\u30d5\u30a1\u30a4\u30eb\u306e\u30bc\u30ed\u3092\u81ea\u52d5\u7684\u306b\u691c\u51fa\u3057\u3066\u3001\u305d\u306e\u90e8\u5206\u3092\u5148\u30d5\u30a1\u30a4\u30eb\u306b\u304a\u3044\u3066\u66f8\u304d\u8fbc\u307f\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u3053\u3068\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4e0a\u3052\u308b\u3068\u3044\u3046\u4f5c\u696d\u3092\u884c\u306a\u3046\u5fc5\u8981\u304c\u3042\u308b\u304c\u3001\u305d\u306e\u969b\u306b\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u62e1\u5f35\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u9650\u3089\u305a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30d7\u30ed\u30b0\u30e9\u30e0\u306a\u3069\u3001\u5de8\u5927\u306a\u30c7\u30fc\u30bf\u3092\u6271\u3046\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f\u3092\u4f34\u308f\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u62e1\u5f35\u51e6\u7406\u3092\u3072\u3093\u3071\u3093\u306b\u5229\u7528\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u969b\u3001\u30bc\u30ed\u30af\u30ea\u30a2\u304c\u884c\u306a\u308f\u308c\u305a\u3001\u300c\u672a\u5b9a\u7fa9\u306e\u30c7\u30fc\u30bf\u300d(\uff01) \u304c\u5165\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u3068\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30fc\u30bf\u306f\u610f\u56f3\u3057\u305f\u3068\u304a\u308a\u306b\u306a\u3063\u3066\u304a\u3089\u305a\u3001\u4e00\u8cab\u6027\u304c\u6b20\u5982\u3057\u3001\u5185\u5bb9\u304c\u7834\u640d\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001Windows \u3067\u306f\u3001SetFilePointer \u3084 SetEndOfFile \u3060\u3051\u3067\u306f\u3001\u5b89\u5168\u306a\u30d5\u30a1\u30a4\u30eb\u62e1\u5f35\u306f\u4e0d\u53ef\u80fd\u3067\u3042\u308b\u3002UNIX \u304b\u3089 Windows \u306e\u4e16\u754c\u306b\u8db3\u3092\u8e0f\u307f\u5165\u308c\u305f\u591a\u304f\u306e UNIX \u306e\u30d7\u30ed\u306e\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306f\u3001Windows \u306e\u4e16\u754c\u3067\u306f\u7d20\u4eba\u3067\u3042\u308b\u306e\u3067\u3001\u3053\u306e Windows \u306e\u6050\u6016\u306e API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6700\u5927\u9650\u306e\u6050\u6016\u306e\u8a18\u8ff0\u3092\u6ce8\u610f\u6df1\u304f\u8b66\u6212\u3057\u3066\u3088\u304f\u8aad\u307e\u305a\u306b\u3001\u30bc\u30ed\u30af\u30ea\u30a2\u3057\u3066\u3044\u308b\u3064\u3082\u308a\u3067\u300c\u672a\u5b9a\u7fa9\u306e\u30c7\u30fc\u30bf\u300d(\uff01) \u304c\u6df7\u5165\u3059\u308b\u3068\u3044\u3046\u30d0\u30b0\u304c\u3042\u308b Windows \u306e\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u308b\u306b\u9055\u3044\u306a\u3044\u3002Windows \u306e\u30d7\u30ed\u306f\u3001API \u4ed5\u69d8\u66f8\u3092\u307e\u3059\u307e\u3059\u3088\u304f\u8aad\u3080\u3068\u3001DeviceIoControl \u3067 FSCTL_SET_ZERO_DATA \u3068\u3044\u3046\u7d20\u6674\u3089\u3057\u3044\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30b3\u30fc\u30c9\u306e\u5b58\u5728\u3092\u3064\u3044\u306b\u767a\u898b\u3059\u308b\u3067\u3042\u308d\u3046\u3002\u3053\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30b3\u30fc\u30c9\u3053\u305d\u304c\u3001Windows \u306b\u304a\u3044\u3066\u3001\u9818\u57df\u62e1\u5f35\u5f8c\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u5b9f\u969b\u306e\u66f8\u304d\u8fbc\u307f\u3092\u4f34\u308f\u305a\u306b\u30bc\u30ed\u30af\u30ea\u30a2\u3055\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u552f\u4e00\u306e\u62e1\u5f35\u64cd\u4f5c\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u5229\u7528\u3055\u308c\u308b\u3001\u30d7\u30ed\u3057\u304b\u77e5\u3089\u306a\u3044\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30b3\u30fc\u30c9\u306a\u306e\u3067\u3042\u308b\u3002Windows \u3067\u306f lseek \u3084 ftruncate \u7684\u306a API \u3092\u7528\u3044\u3066\u30d5\u30a1\u30a4\u30eb\u62e1\u5f35\u3057\u305f\u5f8c\u306b\u306f\u3001\u5fd8\u308c\u305a\u306b\u3001DeviceIoControl \u3067\u3001FSCTL_SET_ZERO_DATA \u3092\u4f7f\u3063\u3066\u30bc\u30ed\u30af\u30ea\u30a2\u3092\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u306e\u3067\u3042\u308b\u3002\u3053\u308c\u3092\u8aad\u3093\u3067\u9a5a\u3044\u305f\u65b9\u306f\u3001\u6700\u65b0\u306e Windows 10 \u306e SDK \u306e SetFilePointer \u304a\u3088\u3073 SetEndOfFile \u306e\u82f1\u8a9e\u7248\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u8aad\u3093\u3067\u307f\u308b\u3068\u3088\u3044\u3002SetFilePointer \u306e Remarks \u306b\u306f &quot;The size of the file does not increase until you call the SetEndOfFile, WriteFile, or WriteFileEx function. A write operation increases the size of the file to the file pointer position plus the size of the buffer written, which results in the intervening bytes uninitialized.&quot; \u3001SetEndOfFile \u306e Remarks \u306b\u306f &quot;The SetEndOfFile function can be used to truncate or extend a file. If the file is extended, the contents of the file between the old end of the file and the new end of the file are not defined.&quot; \u3068\u3044\u3046\u6050\u6016\u306e\u8a18\u8ff0\u304c\u3042\u308b\u306e\u3067\u3042\u308b\u3002\u3059\u3079\u3066\u306e Windows \u306e\u30d7\u30ed\u306f\u3001\u4e00\u5ea6\u3001\u3053\u308c\u307e\u3067\u306b\u3001\u81ea\u5206\u306e\u66f8\u3044\u305f\u30b3\u30fc\u30c9\u304c\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u62e1\u5f35\u3057\u305f\u5f8c\u306b\u305d\u306e\u62e1\u5f35\u3057\u305f\u9818\u57df\u306b\u5bfe\u3057\u3066 WriteFile \u3067\u5b9f\u969b\u306b\u30bc\u30ed\u3092\u66f8\u304d\u8fbc\u3080\u304b\u3001\u307e\u305f\u306f\u3001DeviceIoControl \u3067 FSCTL_SET_ZERO_DATA \u3092\u7528\u3044\u3066\u30bc\u30ed\u30af\u30ea\u30a2\u3092\u5ba3\u8a00\u3059\u308b\u3068\u3044\u3046\u52d5\u4f5c\u3092\u3057\u5fd8\u308c\u3066\u3044\u306a\u3044\u304b\u3001\u5341\u5206\u614e\u91cd\u306b\u601d\u3044\u8fd4\u3057\u3066\u3001\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3068\u3088\u3044\u3002\u304a\u305d\u3089\u304f\u307b\u3068\u3093\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306f\u3001(\u5f53\u7136 UNIX \u3068\u540c\u69d8\u306b) \u30bc\u30ed\u30af\u30ea\u30a2\u304c\u6697\u9ed9\u3067\u884c\u306a\u308f\u308c\u3066\u3044\u308b\u3068\u4fe1\u3058\u3066\u3001Windows \u306b\u304a\u3044\u3066\u3053\u306e\u6050\u6016\u306e\u4ed5\u69d8\u306b\u5bfe\u3057\u3066\u6cb9\u65ad\u3092\u3057\u3001FSCTL_SET_ZERO_DATA \u306a\u3069\u3068\u3044\u3046\u3088\u3046\u306a\u30d7\u30ed\u3057\u304b\u77e5\u3089\u306a\u3044\u6551\u4e16\u4e3b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30b3\u30fc\u30c9\u306e\u3053\u3068\u306a\u3069\u8abf\u3079\u305f\u3053\u3068\u3082\u306a\u3044\u306f\u305a\u3067\u3042\u308d\u3046\u3002\u266a\u266b\u266a\u266b\u266a\u266b<\/p>\n<p>\u4e0a\u8a18\u306e\u3088\u3046\u306b\u3001Windows \u3067\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3059\u308b\u5834\u5408\u306f\u3001\u8272\u3005\u306a\u70b9\u306b\u6c17\u3092\u914d\u3089\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u4e0a\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u554f\u984c (\u4ed6\u306b\u3082\u3042\u308b\u304b\u3082\u77e5\u308c\u306a\u3044) \u3092\u5341\u5206\u306b\u628a\u63e1\u3057\u3066\u3044\u308b\u4eba\u305f\u3061\u306f\u3001\u5f53\u306e Microsoft \u793e\u306b\u304a\u3044\u3066\u3082\u3082\u306f\u3084\u5c11\u6570\u3068\u306a\u3063\u3066\u3044\u308b\u7a0b\u5ea6\u3067\u3042\u308b\u3002\u305d\u3057\u3066\u5e02\u8ca9\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3042\u3063\u3066\u3082\u3001\u30d5\u30ea\u30fc\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3042\u3063\u3066\u3082\u3001Windows \u306b\u5bfe\u5fdc\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u308d\u304f\u306a\u3082\u306e\u304c\u307b\u3068\u3093\u3069\u5b58\u5728\u3057\u306a\u3044\u7406\u7531\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u3053\u3068\u3059\u3079\u3066\u306b\u5bfe\u5fdc\u3057\u306a\u3051\u308c\u3070\u3001\u300c\u6b63\u3057\u3044\u30d5\u30a1\u30a4\u30eb\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u300d\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u306a\u306e\u3067\u3042\u308b\u3002\u3042\u306e\u30e9\u30a4\u30bb\u30f3\u30b9\u6599\u91d1\u304c\u9ad8\u3044 BackupExec \u304c\u9ad8\u3044\u7406\u7531\u306f\u3001\u3060\u3044\u305f\u3044\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30d8\u30f3\u30c6\u30b3\u306e\u6a5f\u80fd\u3059\u3079\u3066\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306e\u81a8\u5927\u306a\u958b\u767a\u3084\u30c6\u30b9\u30c8\u306e\u8cbb\u7528\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3089\u306a\u306e\u3067\u3042\u308d\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u7167\u5143 \u975e\u5e38\u306b\u91cd\u8981\u306a\u60c5\u5831\u306a\u306e\u3067\u8a18\u9332\u3057\u305f\u3044 Windows \u306e\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u306f\u3001\u9a5a\u304f\u307b\u3069\u5965\u304c\u6df1\u3044\u3002 Windows \u3067\u3001\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30b3\u30d4\u30fc\u306a\u3069\u3001\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3068\u304d\u306f\u3001\u6c7a\u3057\u3066\u6cb9\u65ad\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002UN&#8230; &raquo; <a class=\"read-more-link\" href=\"https:\/\/speedloger.com\/?p=119\">read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":""},"categories":[12],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mynote-thumbnail":false,"mynote-medium":false},"uagb_author_info":{"display_name":"\u7ba1\u7406\u30a2\u30ab\u30a6\u30f3\u30c8","author_link":"https:\/\/speedloger.com\/?author=1"},"uagb_comment_info":0,"uagb_excerpt":"\u53c2\u7167\u5143 \u975e\u5e38\u306b\u91cd\u8981\u306a\u60c5\u5831\u306a\u306e\u3067\u8a18\u9332\u3057\u305f\u3044 Windows \u306e\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u306f\u3001\u9a5a\u304f\u307b\u3069\u5965\u304c\u6df1\u3044\u3002 Windo&hellip;","_links":{"self":[{"href":"https:\/\/speedloger.com\/index.php?rest_route=\/wp\/v2\/posts\/119"}],"collection":[{"href":"https:\/\/speedloger.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/speedloger.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/speedloger.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/speedloger.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=119"}],"version-history":[{"count":0,"href":"https:\/\/speedloger.com\/index.php?rest_route=\/wp\/v2\/posts\/119\/revisions"}],"wp:attachment":[{"href":"https:\/\/speedloger.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/speedloger.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/speedloger.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}