
	Where results make sense

Topic: Device file

	Device file - Wikipedia, the free encyclopedia
		A device file or special file is an interface for a device driver that appears in a file system as if it were an ordinary file.
		Finally, device files are useful for accessing system resources that have no connection with any actual device such as data sinks and random number generators.
		This means that certain file names are reserved for device files, and cannot be used to name new files or directories.
	en.wikipedia.org /wiki/Device_file (326 words)

	Character Device Files (Site not responding. Last check: 2007-10-12)
		The original purpose of device files is to allow processes to communicate with device drivers in the kernel, and through them with physical devices (modems, terminals, etc.).
		The device driver proper is composed of the four device_ functions, which are called when somebody tries to do something with a device file which has our major number.
		The reason is that if the device file is opened by a process and then we remove the kernel module, using the file would cause a call to the memory location where the appropriate function (read/write) used to be.
	www.die.net /doc/linux/lkmpg/node14.html (1384 words)

	Linux Device Drivers, 2nd Edition: Chapter 3: Char Drivers (Site not responding. Last check: 2007-10-12)
		If this file system is used, management of device files is simplified and quite different; on the other hand, the new filesystem brings several user-visible incompatibilities, and as we are writing it has not yet been chosen as a default feature by system distributors.
		The disadvantage of dynamic assignment is that you can't create the device nodes in advance because the major number assigned to your module can't be guaranteed to always be the same.
		Though this is always the first operation performed on the device file, the driver is not required to declare a corresponding method.
	www.xml.com /ldd/chapter/book/ch03.html (11994 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		Loop device primer ~~~~~~~~~~~~~~~~~~~~~ Loop devices are block devices that do not store any data directly but loop all reads and writes to underlying block device or file, possibly encrypting and decrypting data in the process.
		All devices are identical, and each can be tied to one real block device or one file on some file system.
		Device backed loop device can be used with journaling file systems as device backed loops guarantee that writes reach disk platters in order required by journaling file system (write caching must be disabled on the disk drive, of course).
	loop-aes.sourceforge.net /loop-AES.README (6845 words)

	Error Message: Cannot Find a Device File That May Be Needed to Run Windows
		Cannot find a device file that may be needed to run Windows or a Windows application.
		In this case, the missing device driver is not named in the error message.
		If the missing device driver has a.vxd extension, it is a driver designed for use with Windows 95 or Windows 98 and is referenced in the registry.
	support.microsoft.com /?kbid=132008 (934 words)

	Gentoo Linux Documentation -- Device File System Guide
		In other words, you have device files for devices you don't have.
		Imagine having to change the permissions of all device files that have a corresponding device in your system, and leaving the rest of the device files as they are.
		The fourth field is the ownership of the device file, and the fifth field contains the permissions of the device file.
	www.gentoo.org /doc/en/devfs-guide.xml (1556 words)

	Linux Device Drivers, 2nd Edition: Chapter 5: Enhanced Char Driver Operations (Site not responding. Last check: 2007-10-12)
		Access to a device is controlled by the permissions on the device file(s), and the driver is not normally involved in permissions checking.
		The drawback of controlling by printing is that it adds policy constraints to the device; for example, it is viable only if you are sure that the control sequence can't appear in the data being written to the device during normal operation.
		When the device isn't accessible, returning an error is usually the most sensible approach, but there are situations in which you'd prefer to wait for the device.
	www.xml.com /ldd/chapter/book/ch05.html (13976 words)

	Devfs (Device File System) FAQ
		For miscellaneous character devices a second step is required: there is a scan for the driver entry with the same minor number as the file that was opened, and the appropriate minor open method is called.
		The devfs solution allows a device driver to "tag" certain device files so that when an unopened device is opened, the ownerships are changed to the current euid and egid of the opening process, and the protections are changed to the default registered by the driver.
		to be the mouse device for XFree86 and GPM.
	www.atnf.csiro.au /~rgooch/linux/docs/devfs.html (9232 words)

	Device - Wikipedia, the free encyclopedia
		The word device is very general and can mean many things.
		Electrical device designed to carry power, but not use it
		Component of a computer or similar electronic system such as an integrated circuit, printer or network card
	en.wikipedia.org /wiki/Device (140 words)

	DEVFS and SCSI
		The device pseudo file system (devfs) was added to the Linux development source tree in 2.3.46 and will be present in the forthcoming 2.4 series of kernels.
		It also shows a hole in the device mapping as /dev/sg2 (char major 21, minor 2) is no longer associated with a device.
		Using the default "conf" file supplied with the devfsd tarball yields the scsi device names we are used to in Linux.
	sg.torque.net /sg/devfs_scsi.html (3170 words)

	Character Device Drivers
		Also, its name is a bit misleading; it represents an abstract open `file', not a file on a disk, which is represented by a structure named inode.
		The downside is that you can't make a device file in advance, since you don't know what the major number will be.
		If the device file is opened by a process and then we remove the kernel module, using the file would cause a call to the memory location where the appropriate function (read/write) used to be.
	www.faqs.org /docs/kernel/x571.html (1485 words)

	Associated device file problem - Cyber Tech Help Support Forums
		loads: Cannot find a device file that may be needed to run windows or a windows appli-
		file refers to this device file,but the device file no longer exists.
		Near as I can figure, that file (gckernal.vxd) is part of their drivers.
	www.cybertechhelp.com /forums/showthread.php?t=2506 (236 words)

	Err Msg: Cannot Find a Device File That May Be Needed to Run...
		The Dial-Up Networking files are not copied to the hard disk but the file names are added to the registry.
		When the computer is restarted, the files are requested and cannot be found.
		Because the files were not copied to the hard disk, you receive the error messages listed at the beginning of this article.
	support.microsoft.com /support/kb/articles/q166/8/32.asp (595 words)

	file transfer to USB device problems - LinuxQuestions.org
		attempt to copy files across to them I get a file transfer progress box appear that shows the files transfered far faster than is possible.
		The files "appear" to be on the device but are all 0kb in size.
		When transferring the files to the USB, it show the transfer is complete but the synchronization between the computer and the USB device is not completed.
	www.linuxquestions.org /questions/showthread.php?threadid=368696 (334 words)

	Annoyances.org - device file (Windows 98 Discussion Forum) (Site not responding. Last check: 2007-10-12)
		I'm using laptop HP OMNIBOOK each time I start it, it displays a message as follows, Cannot find a device file that may be needed to run windows or windows application.
		If you deleted this file in purpose, try uninstalling the associated application using its unistall or set up program.
		it then gives the name of file, like C:\windows\system\VMM32\IFSMGR.VXD after third press of any key to continue as it insructs it gives the message that while initializing device INT13 invalid VXD dynamic link call to device number 10, service number7.
	www.annoyances.org /exec/forum/win98/1023171989 (188 words)

	Micro Motion Products - Series 1000-2000
		After downloading is complete, open or run the downloaded file to extract the device files within.
		This file allows enabling/disabling of custody transfer on Series 1000 and 2000 transmitters.
		Series 2000 PDM file, Device rev 2.0, 2.1 (315KB)
	www.emersonprocess.com /micromotion/products/transmitters_software.html (318 words)

	Annoyances.org - Missing device file (Windows 98 Discussion Forum) (Site not responding. Last check: 2007-10-12)
		The following are all of the messages in this thread (6 in all), shown in chronological order.
		When I boot, I am told that the following device file is missing from Windows registry or SYSTEM.INI and must be recovered: c:\progra~1\avpers~1\avguard.vxd Your assistance would be highly appreciated.
		Assuming you did uninstall it using it's uninstaller or A/R, you still have leftovers to cleanup.
	www.annoyances.org /exec/forum/win98/t1113188231 (322 words)

	IBM Personal computing support - Software and device drivers - Intel and AMD based Servers (Site not responding. Last check: 2007-10-12)
		For other miscellaneous files, please select the appropriate category under Downloads and drivers.
		UpdateXpress is a new life-cycle tool, part of the IBM Universal Manageability family of system management solutions.
		For other miscellaneous files, please select the RAID category under Downloads and drivers.
	www-3.ibm.com /pc/support/site.wss/document.do?lndocid=MIGR-4JTS2T (163 words)

	Amazon.com: Device: file under: art, commercial: Books: Rian Hughes,Robert Klanten (Site not responding. Last check: 2007-10-12)
		Elegantly compiled, Device showcases a fantastic array of dazzling artwork, rife with style and energy."...
		Rian Hughes, aka Device, is a gifted and often-copied illustrator, with his trademark catalogue style of classic 50s and 60s Martini ads and a trained eye for vital details he creates consistent, self-contained settings.
		If you're not familiar with his work, you can get a taste of it over at his Device website.
	www.amazon.com /exec/obidos/tg/detail/-/3931126862?v=glance (1034 words)

Try your search on: Qwika (all wikis)