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The lofi file driver exports
a file as a block device. Reads and writes to the block device are translated
to reads and writes on the underlying file. This is useful when the file contains
a file system image. Exporting it as a block device through the lofi file driver allows normal system utilities to operate on the
image through the block device (like fstyp(1M)fsck(1M), and mount(1M). This
is useful for accessing CD-ROM and FAT floppy images. See lofiadm(1M) for
examples.
File block device entries are contained in /dev/lofi,
while /dev/rlofi contains the character (or raw) device
entries. Entries are in the form of decimal numbers which are assigned through lofiadm(1M). When
created, these device entries are owned by root, in group sys, and have permissions 0600. While ownership,
group, and permission settings can be altered, there are possible ramifications.
See lofiadm(1M) for
more information.
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