makefs(8)
- NetBSD Manual Pages
MAKEFS(8) NetBSD System Manager's Manual MAKEFS(8)
NAME
makefs -- create a file system image from a directory tree
SYNOPSIS
makefs [-x] [-B endian] [-b free-blocks] [-d debug-mask]
[-F mtree-specfile] [-f free-files] [-M minimum-size]
[-m maximum-size] [-N userdb-dir] [-o fs-options] [-S sector-size]
[-s image-size] [-t fs-type] image-file directory
[extra-directory ...]
DESCRIPTION
The utility makefs creates a file system image into image-file from the
directory tree directory. If any optional directory trees are passed in
the extra-directory arguments, then the directory tree of each argument
will be merged into the directory first before creating image-file. No
special devices or privileges are required to perform this task.
The options are as follows:
-B endian
Set the byte order of the image to endian. Valid byte orders are
`4321', `big', or `be' for big endian, and `1234', `little', or
`le' for little endian. Some file systems may have a fixed byte
order; in those cases this argument will be ignored.
-b free-blocks
Ensure that a minimum of free-blocks free blocks exist in the
image. An optional `%' suffix may be provided to indicate that
free-blocks indicates a percentage of the calculated image size.
-d debug-mask
Enable various levels of debugging, depending upon which bits are
set in debug-mask. XXX: document these
-F mtree-specfile
Use mtree-specfile as an mtree(8) `specfile' specification.
If a specfile entry exists in the underlying file system, its per-
missions and modification time will be used unless specifically
overridden by the specfile. An error will be raised if the type of
entry in the specfile conflicts with that of an existing entry.
In the opposite case (where a specfile entry does not have an entry
in the underlying file system) the following occurs: If the spec-
file entry is marked optional, the specfile entry is ignored. Oth-
erwise, the entry will be created in the image, and it is necessary
to specify at least the following parameters in the specfile: type,
mode, gname, or gid, and uname or uid, device (in the case of block
or character devices), and link (in the case of symbolic links).
If time isn't provided, the current time will be used. If flags
isn't provided, the current file flags will be used. Missing regu-
lar file entries will be created as zero-length files.
-f free-files
Ensure that a minimum of free-files free files (inodes) exist in
the image. An optional `%' suffix may be provided to indicate that
free-files indicates a percentage of the calculated image size.
-M minimum-size
Set the minimum size of the file system image to minimum-size.
-m maximum-size
Set the maximum size of the file system image to maximum-size. An
error will be raised if the target file system needs to be larger
than this to accommodate the provided directory tree.
-N userdb-dir
Use the user database text file master.passwd and group database
text file group from userdb-dir, rather than using the results from
the system's getpwnam(3) and getgrnam(3) (and related) library
calls.
-o fs-options
Set file system specific options. fs-options is a comma separated
list of options. Valid file system specific options are detailed
below.
-S sector-size
Set the file system sector size to sector-size. Defaults to 512.
-s image-size
Set the size of the file system image to image-size.
-t fs-type
Create an fs-type file system image. The following file system
types are supported:
ffs BSD fast file system (default).
cd9660 ISO 9660 file system.
v7fs 7th Edition(V7) file system.
-x Exclude file system nodes not explicitly listed in the specfile.
Where sizes are specified, a decimal number of bytes is expected. Two or
more numbers may be separated by an ``x'' to indicate a product. Each
number may have one of the following optional suffixes:
b Block; multiply by 512
k Kibi; multiply by 1024 (1 KiB)
m Mebi; multiply by 1048576 (1 MiB)
g Gibi; multiply by 1073741824 (1 GiB)
t Tebi; multiply by 1099511627776 (1 TiB)
w Word; multiply by the number of bytes in an integer
FFS-specific options
ffs images have ffs-specific optional parameters that may be provided.
Each of the options consists of a keyword, an equal sign (`='), and a
value. The following keywords are supported:
avgfilesize Expected average file size.
avgfpdir Expected number of files per directory.
bsize Block size.
density Bytes per inode.
fsize Fragment size.
label Label name of the image.
maxbpg Maximum blocks per file in a cylinder group.
minfree Minimum % free.
optimization Optimization preference; one of `space' or `time'.
extent Maximum extent size.
maxbpcg Maximum total number of blocks in a cylinder group.
version UFS version. 1 for FFS (default), 2 for UFS2.
CD9660-specific options
cd9660 images have ISO9660-specific optional parameters that may be pro-
vided. The arguments consist of a keyword and, optionally, an equal sign
(`='), and a value. The following keywords are supported:
allow-deep-trees Allow the directory structure to exceed the
maximum specified in the spec.
allow-max-name Allow 37 instead of 33 characters for file-
names by omitting the version id.
allow-multidot Allow multiple dots in a filename.
applicationid Application ID of the image.
archimedes Use the `ARCHIMEDES' extension to encode RISC
OS metadata.
chrp-boot Write an MBR partition table to the image to
allow older CHRP hardware to boot.
boot-load-segment Set load segment for the boot image.
bootimage Filename of a boot image in the format
``sysid;filename'', where ``sysid'' is one of
`i386', `mac68k', `macppc', or `powerpc'.
generic-bootimage Load a generic boot image into the first 32K
of the cd9660 image.
hard-disk-boot Boot image is a hard disk image.
keep-bad-images Don't throw away images whose write was
aborted due to an error. For debugging pur-
poses.
label Label name of the image.
no-boot Boot image is not bootable.
no-emul-boot Boot image is a ``no emulation'' ElTorito
image.
no-trailing-padding Do not pad the image (apparently Linux needs
the padding).
preparer Preparer ID of the image.
publisher Publisher ID of the image.
rockridge Use RockRidge extensions (for longer file-
names, etc.).
volumeid Volume set identifier of the image.
V7FS-specific options
The following keywords are supported:
pdp PDP endian.
progress Display a progress meter for the file system con-
struction and file population.
SEE ALSO
strsuftoll(3), installboot(8), mtree(8), newfs(8)
HISTORY
The makefs utility appeared in NetBSD 1.6.
AUTHORS
Luke Mewburn <lukem@NetBSD.org> (original program),
Daniel Watt,
Walter Deignan,
Ryan Gabrys,
Alan Perez-Rathke,
Ram Vedam (cd9660 support),
UCHIYAMA Yasushi (v7fs support).
NetBSD 6.0 January 27, 2012 NetBSD 6.0
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