genromfs - create a romfs image
genromfs -f device [ -d source ] [ -V volumename ] [ -a alignment ] [ -A alignment,pattern
] [ -v ]
genromfs is used to create a romfs file system image, usually directly on a block device,
or for test purposes, in a plain file. It is the mkfs equivalent of other filesystems.
genromfs will scan the current directory and its subdirectories, build a romfs image from
the files found, and output it to the file or device you specified.
Specifies the file to output the image to. It must be specified.
Use the specified directory as the source, not the current directory.
Build the image with the specified volume name. Currently it is not used by the
kernel, but it will be recorded in the image.
Align regular files to alignment bytes. genromfs will align data of each regular
file in the resulting image to the specified alignment, while keeping the image
compatible with the original romfs definition (by adding pad bytes between last
node before the file and file's header). By default, genromfs will guarantee only
an alignment of 16 bytes.
Align objects matching shell wildcard pattern to alignment bytes. If one object
matches more patterns, then the highest alignment is chosen. Alignment has to be a
power of two. Patterns either don't contain any slashes, in which case files match-
ing those patterns are matched in all directories, or start with a leading slash,
in which case they are matched against absolute paths inside of the romfs filesys-
tem (that is, as if you chrooted into the rom filesystem).
-v Verbose operation, genromfs will print every file which are included in the image,
along with its offset.
genromfs -d root -f /dev/fd0 -V 'Secret labs install disk'
All files in the root directory will be written to /dev/fd0 as a new romfs filesystem
genromfs -d root -f /dev/fd0 -A 2048,/.. -A '4096,*.boot' -a 512 -V 'Bootable floppy'
Generate the image and place file data of all regular files on 512 bytes boundaries or on
4K boundaries, if they have the .boot extension. Also, align the root directories '..'
romfs header on 2K boundary.
You can use the generated image (if you have the romfs module loaded, or compiled into the
mount -t romfs /dev/fd0 /mnt
This manual page was initially written by Christoph Lameter <email@example.com>, for the
Debian GNU/Linux system.
mkfs(8), mount(8), mkisofs(8)
Version 0.3 Sep 1998 GENROMFS(8)