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RedHat 9 (Linux i386) - man page for genromfs (redhat section 8)

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GENROMFS(8)									      GENROMFS(8)

       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.

       -f output
	      Specifies the file to output the image to.  It must be specified.

       -d source
	      Use the specified directory as the source, not the current directory.

       -V volumename
	      Build the image with the specified volume name.  Currently it is not  used  by  the
	      kernel, but it will be recorded in the image.

       -a alignment
	      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.

       -A alignment,pattern
	      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
       kernel) via:

	  mount -t romfs /dev/fd0 /mnt

       This manual page was initially written by Christoph Lameter <clameter@debian.org>, for the
       Debian GNU/Linux system.

       mkfs(8), mount(8), mkisofs(8)

Version 0.3				     Sep 1998				      GENROMFS(8)
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