Component Type: kbuild config

Description: Loopback device support

More info: Saying Y here will allow you to use a regular file as a block device; you can then create a file system on that block device and mount it just as you would mount other block devices such as hard drive partitions, CD-ROM drives or floppy drives. The loop devices are block special device files with major number 7 and typically called /dev/loop0, /dev/loop1 etc. This is useful if you want to check an ISO 9660 file system before burning the CD, or if you want to use floppy images without first writing them to floppy. Furthermore, some Linux distributions avoid the need for a dedicated Linux partition by keeping their complete root file system inside a DOS FAT file using this loop device driver. To use the loop device, you need the losetup utility, found in the util-linux package, see <https://www.kernel.org/pub/linux/utils/util-linux/>. The loop device driver can also be used to "hide" a file system in a disk partition, floppy, or regular file, either using encryption (scrambling the data) or steganography (hiding the data in the low bits of, say, a sound file). This is also safe if the file resides on a remote file server. Note that this loop device has nothing to do with the loopback device used for network connections from the machine to itself. To compile this driver as a module, choose M here: the module will be called loop. Most users will answer N here.

Build project: Kconfig (Linux kconfig) (Path: drivers\block\Kconfig )

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