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- O_request_packet abstract "I/O request packets (IRPs) are kernel mode structures that are used by Windows Driver Model (WDM) and Windows NT device drivers to communicate with each other and with the operating system. They are data structures that describe I/O requests, and can be equally well thought of as "I/O request descriptors" or similar. Rather than passing a large number of small arguments (such as buffer address, buffer size, I/O function type, etc.) to a driver, all of these parameters are passed via a single pointer to this persistent data structure. The IRP with all of its parameters can be put on a queue if the I/O request cannot be performed immediately. I/O completion is reported back to the I/O manager by passing its address to a routine for that purpose, IoCompleteRequest. The IRP may be repurposed as a special kernel APC object if such is required to report completion of the I/O to the requesting thread. IRPs are typically created by the I/O Manager in response to I/O requests from user mode. However, IRPs are sometimes created by the plug-and-play manager, power manager, and other system components, and can also be created by drivers and then passed to other drivers. The I/O request packet mechanism is also used by Digital Equipment Corporation's VMS operating system, and was used by Digital's RSX-11 family of operating systems before that.".
- O_request_packet wikiPageExternalLink ff550694(v=vs.85).aspx.
- O_request_packet wikiPageExternalLink cc776371%28WS.10%29.aspx.
- O_request_packet wikiPageExternalLink ntarc_6.mspx?mfr=true.
- O_request_packet wikiPageID "10998227".
- O_request_packet wikiPageRevisionID "588209195".
- O_request_packet hasPhotoCollection O_request_packet.
- O_request_packet subject Category:Data_structures.
- O_request_packet subject Category:Device_drivers.
- O_request_packet subject Category:Windows_NT_architecture.
- O_request_packet subject Category:Windows_NT_kernel.
- O_request_packet type Abstraction100002137.
- O_request_packet type Code106355894.
- O_request_packet type CodingSystem106353757.
- O_request_packet type Communication100033020.
- O_request_packet type DeviceDrivers.
- O_request_packet type Driver106574473.
- O_request_packet type Program106568978.
- O_request_packet type Software106566077.
- O_request_packet type UtilityProgram106581410.
- O_request_packet type Writing106359877.
- O_request_packet type WrittenCommunication106349220.
- O_request_packet comment "I/O request packets (IRPs) are kernel mode structures that are used by Windows Driver Model (WDM) and Windows NT device drivers to communicate with each other and with the operating system. They are data structures that describe I/O requests, and can be equally well thought of as "I/O request descriptors" or similar.".
- O_request_packet label "I/O request packet".
- O_request_packet sameAs m.02qxp19.
- O_request_packet sameAs Q17042354.
- O_request_packet sameAs Q17042354.
- O_request_packet sameAs O_request_packet.
- O_request_packet wasDerivedFrom O_request_packet?oldid=588209195.
- O_request_packet isPrimaryTopicOf O_request_packet.