status

can read an openbsd ffs1 file system, needs more testing and better
interpretation of data structures (e.g. frag/block sizes).

intro

ffs is a read-only implementation of the bsd ffs as used on openbsd.
it only works on little endian systems, and probably only those
with 32 bit pointers.

install

install package "util" first, see http://www.ueber.net/code/r/util.

make sure $ROOT is set.  now run "mk install" to compile and install the files.

when building from within inferno, insert SYSHOST=Inferno and ROOT=
in the mk invocations to override the values in the mkconfig.

download

the latest version can be found at:

http://www.ueber.net/code/r/ffs

licence & author

all files are in the public domain.  this code has been written by
mechiel lukkien, reachable at mechiel@ueber.net or mechiel@xs4all.nl.

todo

• find better specification, for other bsd's too
• which should we use super.fragsize? currently it seems we have to use super.fragsize in places where i expected to need super.blocksize.
• which fields are used for fragments? we're currently always reading from start of block.
• think about little vs big endian (currently little endian only). it seems 32 vs 64 bit pointers might matter too...
• ufs2 support?
• direntry entry hashing for faster lookups
• is disklabel endian-dependent too?
• more testing