{"id":1580,"date":"2017-02-28T23:10:40","date_gmt":"2017-02-28T15:10:40","guid":{"rendered":"http:\/\/blog.dynox.cn\/?p=1580"},"modified":"2017-03-01T13:16:16","modified_gmt":"2017-03-01T05:16:16","slug":"%e8%a7%a3%e6%9e%90toplevelirp","status":"publish","type":"post","link":"https:\/\/blog.dynox.cn\/?p=1580","title":{"rendered":"\u89e3\u6790TopLevelIrp"},"content":{"rendered":"

\u4f55\u4e3aTopLevelIrp<\/h2>\n

TopLevelIrp\u662f\u5f53\u524d\u5185\u6838\u7ebf\u7a0b\u7ed3\u6784\u4e2d\u7684\u4e00\u4e2a\u6307\u9488\uff0c\u53ef\u4ee5\u662f\u4e00\u4e2a\u6570\u503c\u6807\u8bc6\uff08ULONG_PTR\uff09\uff0c\u4e5f\u53ef\u4ee5\u662f\u6307\u5411\u4e00\u4e2a\u5185\u5b58\u5757\u7684\u6307\u9488\uff08\u5185\u6838IRP\u7ed3\u6784\u6216\u7528\u6237\u81ea\u5b9a\u4e49\u7ed3\u6784\uff09\uff0c\u5176\u76ee\u7684\u5c31\u662f\u7ed9\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u8bb0\u5f55\u5f53\u524d\u7ebf\u7a0b\u5176\u5185\u6838\u6808\u6700\u65e9\u4f20\u5165\u4e14\u6b63\u5728\u5904\u7406\u7684I\/O\u8bf7\u6c42\u3002\u56e0\u4e3a\u5904\u7406\u4e00\u4e2aI\/O\u8bf7\u6c42\u7684\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u5f15\u5165\u65b0\u7684I\/O\uff0c\u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u6587\u4ef6\u7cfb\u7edf\u7684\u91cd\u5165\uff08\u5d4c\u5957\u8c03\u7528\uff09\uff0c\u91cd\u5165\u95ee\u9898\u5f88\u6709\u53ef\u80fd\u4f1a\u5e26\u6765\u5bf9\u8d44\u6e90\u4f9d\u8d56\u7684\u6b7b\u9501\uff0c\u6240\u4ee5\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u9700\u8981\u5728\u91cd\u5165\u7684\u60c5\u51b5\u4e5f\u80fd\u7504\u522b\u51fa\u5f53\u524d\u6b63\u5904\u7406\u7684\u8bf7\u6c42\u662f\u4e0d\u662f\u6700\u65e9\u7684\uff0c\u5373\u5f53\u524d\u7ebf\u7a0b\u5185\u6838\u6808\u53ca\u8d44\u6e90\u7684\u5360\u7528\u60c5\u51b5\uff0c\u4ece\u800c\u91c7\u53d6\u4e0d\u540c\u7684\u7b56\u7565\u4ee5\u907f\u514d\u6b7b\u9501\u7684\u53d1\u751f\u3002\u5728\u65f6\u95f4\u987a\u5e8f\u4e0a\u6700\u65e9\u7684\u8bf7\u6c42\uff0c\u4ece\u8c03\u7528\u6808\u4e0a\u6765\u770b\u5c31\u662f\u5904\u4e8e\u6700\u9ad8\u5730\u5740\uff08\u6700\u9ad8\u4f4d\u7f6e\uff09\u7684\u8bf7\u6c42\u3002<\/p>\n

TopLevelIrp\u5728\u5185\u6838\u7ebf\u7a0b\u7ed3\u6784\u4e2d\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n

typedef struct _ETHREAD {\n    KTHREAD Tcb;\n    ...\n    \/\/\n    \/\/  File Systems\n    \/\/\n\n    ULONG_PTR TopLevelIrp;  \/\/ either NULL, an Irp or a flag defined in FsRtl.h\n    struct _DEVICE_OBJECT *DeviceToVerify;\n    ...\n} ETHREAD, *PETHREAD;<\/code><\/pre>\n
TopLevelIrp\u53caDevcieToVerify\u7b49\u57df\u5747\u662f\u7559\u7ed9\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u4e13\u7528\u7684\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u5f53\u524d\u7ebf\u7a0b\u7684\u73af\u5883\u53d8\u91cf\u6216\u5404\u5c42\u8c03\u7528\u6808\u95f4\u7684\u5171\u4eab\u53d8\u91cf\u3002<\/p>\n
\u7cfb\u7edf\u64cd\u4f5c\u51fd\u6570<\/h2>\n
ETHREAD\u662f\u5185\u6838\u79c1\u6709\u7ed3\u6784\uff0c\u7cfb\u7edf\u5185\u6838\u63d0\u4f9b\u7ed9\u5916\u90e8\u7ec4\u4ef6\uff08\u4e3b\u8981\u662f\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\uff09\u4e24\u4e2a\u63a5\u53e3\uff1a<\/p>\n\n\n\n\n\n\n
\u51fd\u6570<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n<\/thead>\n
VOID IoSetTopLevelIrp(IN PIRP Irp);<\/td>\n\u8bbe\u7f6e\uff08\u6539\u53d8\uff09\u5f53\u524d\u7ebf\u7a0b\u7684TopLevelIrp\u503c<\/td>\n<\/tr>\n
PIRP IoGetTopLevelIrp(VOID);<\/td>\n\u8bfb\u53d6\u5f53\u524d\u7ebf\u7a0b\u7684TopLevelIrp\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
TopLevelIrp\u7684\u64cd\u4f5c\u8fc7\u7a0b<\/h2>\n
\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7ec4\u4ef6\uff1aCache Manager\uff08\u7f13\u5b58\u5b50\u7cfb\u7edf\uff09\u3001Virtual Memory Manager\uff08\u865a\u62df\u5185\u5b58\u7ba1\u7406\u5b50\u7cfb\u7edf\uff09\u53caI\/O Manager \uff08I\/O\u5b50\u7cfb\u7edf\uff09\u95f4\u4ea4\u4e92\u76f8\u975e\u5e38\u7d27\u5bc6\u4e14\u8c03\u7528\u5173\u7cfb\u4e5f\u975e\u5e38\u590d\u6742\uff0c\u8c03\u7528\u5d4c\u5957\u53ca\u91cd\u5165\u7684\u60c5\u5f62\u975e\u5e38\u591a\uff0c\u5206\u8fa8\u5e76\u6b63\u786e\u5904\u7406\u4e0d\u540c\u7684\u91cd\u5165\u60c5\u666f\u6b63\u662f\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u4e0d\u5f97\u4e0d\u9762\u5bf9\u7684\u590d\u6742\u96be\u9898\u3002<\/p>\n
TopLevelIrp\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u800c\u8bbe\u8ba1\u7684\u3002\u5176\u6700\u76f4\u63a5\u7684\u64cd\u7eb5\u53ca\u8bbf\u95ee\u8005\u4e5f\u662f\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\uff0c\u56e0\u4e3a\u7528\u6237\u5c42I\/O\u8bf7\u6c42\u6700\u521d\u7684\u54cd\u5e94\u90fd\u662f\u7531I\/O Manager\u76f4\u63a5\u4f20\u7ed9\u6587\u4ef6\u7cfb\u7edf\u7684\u3002\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u5728\u54cd\u5e94\u8fc7\u7a0b\u4e2d\u4f1a\u8c03\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684\u5176\u5b83\u5b50\u7cfb\u7edf\uff0c\u5728\u8c03\u7528\u524d\u4f1a\u9488\u5bf9TopLevelIrp\u505a\u4e0d\u540c\u7684\u8bbe\u7f6e\u3002\u53e6\u5916\u8fd8\u6709\u51e0\u79cd\u5e38\u89c1\u60c5\u51b5\uff0c\u5982Cache Manager\u53caVirtual Memory Manager\u4f1a\u6839\u636e\u5185\u5b58\u538b\u529b\u6765\u53d1\u8d77I\/O\u64cd\u4f5c\uff0c\u6240\u4ee5\u5185\u6838\u5b50\u7cfb\u7edf\u4e5f\u9700\u8981\u4fee\u6539\u3001\u8bbe\u7f6eTopLevelIrp\u57df\u4ee5\u6807\u8bc6\u51fa\u672c\u6b21I\/O\u64cd\u4f5c\u7684\u53d1\u8d77\u8005\u3002<\/p>\n\n\n\n\n\n\n\n\n
IoGetTopLevelIrp()\u8fd4\u56de\u503c  \uff08\u5f53\u524d\u7ebf\u7a0b\u7684TopLevelIrp\u57df\uff09<\/th>\n\u542b\u4e49<\/th>\n<\/tr>\n<\/thead>\n
FSRTL_CACHE_TOP_LEVEL_IRP<\/td>\n\u7531\u7f13\u5b58\u7ba1\u7406\u5668\u89e6\u53d1\u7684i\/o\u8bf7\u6c42\uff1a\u5ef6\u8fdf\u5199\uff08Lazy-write\uff09\u6216\u9884\u8bfb\uff08Readahead\uff09<\/td>\n<\/tr>\n
FSRTL_MOD_WRITE_TOP_LEVEL_IRP<\/td>\n\u7531\u7cfb\u7edf\u810f\u9875\u56de\u5199\u7ebf\u7a0b\u89e6\u53d1\u7684\u5199\u8bf7\u6c42\uff08\u5728MiMappedPageWriter\u56de\u5199\u6620\u5c04\u6587\u4ef6\u7684\u810f\u9875\u65f6\uff09<\/td>\n<\/tr>\n
FSRTL_FAST_IO_TOP_LEVEL_IRP<\/td>\n\u7531I\/O Manager\u53ca\u6587\u4ef6\u7cfb\u7edf\u81ea\u8eab\u5904\u7406Fast i\/o\u8bf7\u6c42\u65f6\u8bbe\u7f6e<\/td>\n<\/tr>\n
FSRTL_FSP_TOP_LEVEL_IRP<\/td>\n\u901a\u5e38\u7531\u6587\u4ef6\u7cfb\u7edf\u672c\u8eab\u89e6\u53d1\uff0c\u7528\u4ee5\u6807\u8bc6\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u81ea\u8eab\u7684i\/o\u5904\u7406\u7ebf\u7a0b\uff08Workitem\u7ebf\u7a0b\u6c60\uff09\u3002\u7531\u4e8e\u6b64\u60c5\u51b5\u4e0bTopLevelIrp\u5b8c\u5168\u7531\u6587\u4ef6\u7cfb\u7edf\u81ea\u5df2\u7ba1\u7406\uff0cIRP\u6216\u79c1\u6709\u7ed3\u6784\uff0c\u901a\u5e38\u7531\u6587\u4ef6\u7cfb\u7edf\u81ea\u5df2\u6784\u9020\u5e76\u4f7f\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u64cd\u4f5c\u573a\u666f<\/h2>\n
    \n
  1. \u7528\u6237\u6001\u5207\u6362\u5230\u5185\u6838\u6001\n\u8fd9\u662f\u6700\u901a\u5e38\u7684\u60c5\u5f62\uff0c\u5373\u8bf7\u6c42\u76f4\u63a5\u6765\u81ea\u4e8e\u7528\u6237\uff0c\u7528\u6237\u8bf7\u6c42\u7ecf\u8fc7syscall\u4e4b\u540e\u5230\u8fbeI\/O Manager\uff0c\u800c\u540eI\/O Manager\u4f1a\u6784\u9020Irp\u5e76\u76f4\u63a5\u4f20\u7ed9\u6587\u4ef6\u7cfb\u7edf\u3002\n\u6587\u4ef6\u7cfb\u7edf\u6700\u901a\u5e38\u7684\u505a\u6cd5\u5c31\u662f\u5c06\u5f53\u524d\u7684Irp\u8bbe\u4e3aTopLevelIrp\u3002\u6587\u4ef6\u7cfb\u7edf\u5f53\u7136\u4e5f\u53ef\u4ee5\u7528\u81ea\u5df1\u79c1\u6709\u7684\u7ed3\u6784\uff0c\u56e0\u4e3a\u6b64\u7ebf\u7a0b\u5728Irp\u6ca1\u6709\u5b8c\u6210\u4e4b\u524d\u5c06\u5b8c\u5168\u7531\u6587\u4ef6\u7cfb\u7edf\u6240\u63a7\u5236\uff0cTopLevelIrp\u4e5f\u53ea\u6709\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u4f1a\u67e5\u8be2\u3002<\/li>\n
  2. Fast I\/O\n\u7528\u6237\u6001\u7684\u8bf7\u6c42\u901a\u8fc7syscall\u5230\u8fbeI\/O Manager\u540e\uff0cI\/O Manager\u53d1\u73b0\u6587\u4ef6\u5df2\u7ecf\u88ab\u6253\u5f00\u8fc7\u4e14\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u6240\u63d0\u4f9b\u7684callback\u76f4\u63a5\u6765\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\uff0c\u4e0d\u5fc5\u4ece\u5185\u5b58\u6c60\u4e2d\u5206\u914dIrp\u7b49\u7ed3\u6784\u3002\n\u6587\u4ef6\u7cfb\u7edf\u88ab\u8c03\u7528\u540e\u53c8\u4f1a\u8c03\u7528\u5185\u6838\u6240\u63d0\u4f9b\u7684\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\u51fd\u6570\uff08FsRtl...\uff09\uff0c\u6b64\u64cd\u4f5c\u5c06\u6709\u53ef\u80fd\u6d89\u53caCache Manager\u3001VM\uff0c\u6216\u91cd\u5165\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u7b49\uff0c\u6240\u4ee5\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\u51fd\u6570\u4f1a\u8bbe\u7f6eTopLevelIrp\u4e3aFSRTL_FAST_IO_TOP_LEVEL_IRP\u4ee5\u6807\u793a\u51fa\u6700\u521d\u7684\u8bf7\u6c42\u54cd\u5e94\u662f\u901a\u8fc7Fast I\/O\u6765\u505a\u7684\u3002<\/li>\n
  3. \u6587\u4ef6\u7cfb\u7edf\u81ea\u8eab\u7684Workitem\u7ebf\u7a0b\n\u7c7b\u4f3c\u7b2c\u4e00\u79cd\u60c5\u5f62\uff08\u7528\u6237\u6001\u5207\u6362\u5230\u5185\u6838\u6001\uff09\uff0cWorkitem\u7ebf\u7a0b\u672c\u8eab\u662f\u7531\u6587\u4ef6\u7cfb\u7edf\u53d1\u8d77\u5e76\u4e14\u662f\u6587\u4ef6\u7cfb\u7edf\u6240\u79c1\u6709\u7684\u5185\u6838\u7ebf\u7a0b\uff0c\u4f46Workitem\u4e2d\u7684\u64cd\u4f5c\u5374\u662f\u6709\u53ef\u80fd\u91cd\u5165\u6587\u4ef6\u7cfb\u7edf\u7684\uff08\u8fd9\u4e2a\u7531\u6587\u4ef6\u7cfb\u7edf\u7684\u8bbe\u8ba1\u51b3\u5b9a\uff09\u3002\nTopLevelIrp\u7684\u503c\u53ef\u4ee5\u7531\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u81ea\u884c\u51b3\u5b9a\uff0c\u5982\u53ef\u4ee5\u8bbe\u4e3aFSRTL_FSP_TOP_LEVEL_IRP\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u4e3a\u6b64Workitem\u5f53\u524d\u8981\u5904\u7406\u7684\u8bf7\u6c42Irp\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u6210\u662f\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u7684\u79c1\u6709\u7ed3\u6784\u3002<\/li>\n
  4. \u7f13\u5b58\u7ba1\u7406\u5668\uff1a\u5ef6\u8fdf\u5199\nCache Manager\u7684Lazy-write\u64cd\u4f5c\uff08\u5ef6\u8fdf\u5199\uff09\u662f\u5728Cache Manager\u79c1\u6709\u7684\u5185\u6838\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684\u3002\u5728\u8c03\u7528\u6587\u4ef6\u7cfb\u7edf\u8fdb\u884cI\/O\u64cd\u4f5c\u4e4b\u524d\u4f1a\u8bbe\u7f6eTopLevelIrp\u4e3aFSRTL_CACHE_TOP_LEVEL_IRP\uff0c\u56e0\u4e3aLazy-write\u64cd\u4f5c\u4f1a\u901a\u8fc7Cache Manager callback\u6765\u83b7\u53d6\u76f8\u5e94\u7684\u9501\u8d44\u6e90\uff0c\u5e76\u4e14\u6700\u7ec8\u7684I\/O\u64cd\u4f5c\u603b\u8981\u7531\u6587\u4ef6\u7cfb\u7edf\u6765\u5b8c\u6210\u3002<\/li>\n
  5. \u865a\u62df\u5185\u5b58\u7ba1\u7406\u5668\uff1aMiMappedPageWriter\n\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u7684I\/O\u4e0d\u4f1a\u7ecf\u8fc7Cache Manager\uff0c\u800c\u662f\u7531Virtual Memory Manager\u76f4\u63a5\u5904\u7406\u7684\uff0c\u5e76\u4e14\u662f\u5728Virtual Memory Manager\u79c1\u6709\u7684\u5185\u6838\u7ebf\u7a0b\u4e2d\u505a\u7684\uff0c\u6b64\u7ebf\u7a0b\u7684\u5904\u7406\u51fd\u6570\u5c31\u662fMiMappedPageWriter\u3002\u540cCache Manager\u5ef6\u8fdf\u5199\u7684\u6d41\u7a0b\u7c7b\u4f3c\uff0c\u6700\u7ec8\u7684I\/O\u64cd\u4f5c\u603b\u8981\u7531\u6587\u4ef6\u7cfb\u7edf\u6765\u5b8c\u6210\uff0c\u6240\u4ee5\u79fb\u4ea4\u63a7\u5236\u6743\u4e4b\u524d\uff0cVM\u4f1a\u5c06\u5f53\u524d\u7ebf\u7a0b\u7684TopLevelIrp\u8bbe\u7f6e\u4e3aFSRTL_MOD_WRITE_TOP_LEVEL_IRP\uff0c\u4ee5\u901a\u77e5\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u5f53\u524d\u8bf7\u6c42\u662f\u7531VM\u53d1\u8d77\u7684\u3002<\/li>\n<\/ol>\n
    \u4e0d\u540c\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u7684\u5904\u7406\u5dee\u5f02<\/h2>\n
    \u524d\u9762\u8bf4\u8fc7TopLevelIrp\u7684\u8bfb\u64cd\u4f5c\u53ca\u68c0\u6d4b\u53ea\u6709\u6587\u4ef6\u7cfb\u7edf\u9a71\u652f\u5728\u505a\uff0c\u867d\u7136\u5176\u8bbe\u7f6e\u53ef\u4ee5\u662f\u591a\u65b9\u7684\u3002\u5bf9\u4e8e\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u6765\u8bf4\uff0cTopLevelIrp\u7684\u5177\u4f53\u503c\u662f\u7531\u6587\u4ef6\u7cfb\u7edf\u81ea\u5df1\u6765\u89e3\u91ca\u7684\uff0c\u6240\u4ee5\u9488\u5bf9 FSRTL_FSP_TOP_LEVEL_IRP\uff0c\u4e0d\u540c\u7684\u6587\u4ef6\u9a71\u52a8\u5bf9TopLevelIrp\u7684\u5904\u7406\u4e5f\u4e0d\u5c3d\u76f8\u540c\uff1a<\/p>\n\n\n\n\n\n\n\n
    \u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8<\/th>\nTopLevelIrp\u6240\u6307\u5411\u7684\u7ed3\u6784<\/th>\n<\/tr>\n<\/thead>\n
    FastFat<\/td>\nnt!_IRP<\/td>\n<\/tr>\n
    Cdfs<\/td>\ncdfs!_THREAD_CONTEXT<\/td>\n<\/tr>\n
    Ntfs<\/td>\nntfs!_TOP_LEVEL_CONTEXT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u6848\u4f8b\u5206\u6790<\/h2>\n
    TopLevelIrp\u7684\u8bbe\u7f6e\u662f\u4e00\u9879\u7cbe\u5de7\u7684\u624b\u827a\u6d3b\uff0c\u7a0d\u6709\u4e0d\u614e\u5c31\u4f1a\u9634\u6c9f\u91cc\u7ffb\u8239\uff0c\u4e0b\u9762\u5c31\u4ecb\u7ecd\u4e24\u4e2a\u5f00\u53d1\u4e2d\u66fe\u9047\u5230\u7684\u6848\u4f8b\uff1a<\/p>\n
    NTFS\uff1aValid Data Length\u7684\u8bbe\u7f6e<\/h3>\n
    Ntfs\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u5728\u5176\u5185\u90e8\u7ef4\u62a4\u7740\u6bcf\u4e2a\u6570\u636e\u6d41\u7684Valid Data Length\uff08VDL\uff0c\u6709\u6548\u6570\u636e\u957f\u5ea6\uff09\uff0c\u4e14VDL\u662f\u7ba1\u7406\u4e8eNtfs\u7684\u79c1\u6709\u7ed3\u6784\u4e2d\u7684\u3002VDL\u7684\u66f4\u65b0\u4e00\u822c\u662f\u5728cached i\/o\u8fc7\u7a0b\u4e2d\u505a\u7684\u3002\u4f46\u5b9e\u9645\u64cd\u4f5c\u4e2d\u6211\u4eec\u6709\u4e2a\u7279\u6b8a\u7684\u9700\u6c42\uff1a\u8981\u622a\u83b7\u6240\u6709\u7684cached i\/o\u8bf7\u6c42\uff0c\u53ea\u4f1a\u901a\u8fc7paging i\/o\u8bf7\u6c42\u548cNtfs\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u4ea4\u4e0e\uff0c\u8fd9\u6837\u64cd\u4f5c\u7684\u540e\u679c\u5c31\u5bfc\u81f4VDL\u4e0d\u80fd\u88ab\u6b63\u5e38\u66f4\u65b0\uff0c\u867d\u7136\u6570\u636e\u5df2\u7ecf\u5199\u5230\u4e86\u78c1\u76d8\u4e0a\u4f46\u662f\u5f53\u8bd5\u56fe\u8bfb\u56de\u6570\u636e\u7684\u65f6\u5019\uff0cNtfs\u4f1a\u6839\u636eVDL\u5bf9\u6570\u636e\u8fdb\u884c\u6e05\u96f6\u5316\u5904\u7406\u3002<\/p>\n
    \u6700\u540e\u7684\u89e3\u51b3\u529e\u6cd5\u4e5f\u662f\u4e00\u4e2a\u4e0d\u5f97\u5df2\u7684\u6295\u5de7\u7684\u529e\u6cd5\uff1a\u5c06\u6211\u4eec\u7684paging writing \u8bf7\u6c42\u6a21\u62df\u6210mmap i\/o (memory mapping i\/o)\uff0c\u5373\u6620\u5c04\u6587\u4ef6\u7684\u6570\u636e\u5237\u5199\u65b9\u5f0f\u3002mmap i\/o\u64cd\u4f5c\u672c\u8eab\u5c31\u662f\u4e2atop level\u64cd\u4f5c\uff0c\u5e76\u4e14\u4e5f\u662f\u4ec5\u6709\u7684top level paging i\/o\u7684\u60c5\u5f62\u3002\u6240\u4ee5\u9488\u5bf9mmap i\/o\uff0cNtfs\u4f1a\u66f4\u65b0VDL\uff0c\u8fd9\u4e5f\u662f\u552f\u4e00\u7684\u53ef\u4ee5\u66f4\u65b0VDL\u7684\u673a\u4f1a\u3002<\/p>\n
    CDFS: \u6362\u4e86\u5149\u76d8\u4f46\u4e0d\u80fd\u6b63\u786e\u52a0\u8f7d<\/h3>\n
    \u8fd9\u4e2a\u95ee\u9898\u6bd4\u8f83\u5996\u602a\uff0c\u672c\u6765\u4ee5\u4e3a\u662f\u6587\u4ef6\u7cfb\u7edf\u8fc7\u6ee4\u9a71\u52a8\u7684\u95ee\u9898\uff0c\u4f46\u4ed4\u7ec6\u5206\u6790\u8fc7\u6ee4\u9a71\u52a8\u53c8\u6ca1\u6709\u53d1\u73b0\u53ef\u7591\u70b9\uff0c\u6700\u540e\u7ecf\u8fc7\u4ee3\u7801\u5bf9\u6bd4\u53ca\u5bf9WDK\u4e2dcdfs\u7684\u52a8\u6001\u8c03\u8bd5\u624d\u5b9a\u4f4d\u5230\u95ee\u9898\u75c7\u7ed3\uff1a\u539f\u6765\u662ftop level irp\u7684\u95ee\u9898\u3002<\/p>\n
    \u6211\u4eec\u90fd\u77e5\u9053\u6587\u4ef6\u7cfb\u7edf\u5bf9\u4e8e\u53ef\u79fb\u52a8\u8bbe\u5907\u53ca\u53ef\u79fb\u9664\u4ecb\u8d28\u8bbe\u5907\u90fd\u4f1a\u6709\u4e2a\u68c0\u9a8c\uff08\u5373verify\uff09\u64cd\u4f5c\uff0c\u4f46cdfs\u7684verify\u64cd\u4f5c\u4f1a\u68c0\u6d4b\u5f53\u524d\u7684TopLevelIrp\u72b6\u6001\uff0c\u5e76\u6839\u636e\u8fd9\u4e2a\u72b6\u6001\u6765\u51b3\u5b9a\u662f\u5426\u7ee7\u7eedverify\u64cd\u4f5c\u3002\u5f53\u6211\u4eec\u8bbe\u7f6e\u4e86TopLevelIrp\u4e4b\u540e\uff0ccdfs\u4f1a\u8ba4\u4e3a\u5b83\u4e0d\u5728\u6700\u9ad8\u7684\u8c03\u7528\u6808\u4e0a\uff0c\u6545\u76f4\u63a5\u8df3\u8fc7\u4e86verify\u64cd\u4f5c\uff0c\u6700\u7ec8\u5c31\u5bfc\u81f4\u4e86\u6362\u5149\u76d8\u540e\u65b0\u5149\u76d8\u65e0\u6cd5\u88ab\u6b63\u5e38\u8bc6\u522b\u7684\u95ee\u9898\u3002<\/p>\n
    \u53c2\u8003\u94fe\u63a5<\/h1>\n
      \n
    1. TopLevelIrp\u662f\u5982\u4f55\u8bbe\u7f6e\u7684 - blog: Oops Kernel<\/a><\/li>\n
    2. More on Maintaining Valid Data Length - OSR<\/a><\/li>\n<\/ol>\n
      <\u672c\u6587\u7528\u65f6\u7ea65\u5c0f\u65f6><\/p><\/div>","protected":false},"excerpt":{"rendered":"
      \u4f55\u4e3aTopLevelIrp TopLevelIrp\u662f\u5f53\u524d\u5185\u6838\u7ebf\u7a0b\u7ed3\u6784\u4e2d\u7684\u4e00\u4e2a\u6307\u9488\uff0c\u53ef\u4ee5\u662f\u4e00\u4e2a\u6570\u503c\u6807\u8bc6\uff08ULON […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[9],"tags":[605,226,394,280],"views":1918,"_links":{"self":[{"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/posts\/1580"}],"collection":[{"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1580"}],"version-history":[{"count":2,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/posts\/1580\/revisions"}],"predecessor-version":[{"id":1582,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=\/wp\/v2\/posts\/1580\/revisions\/1582"}],"wp:attachment":[{"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.dynox.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}