status

seems to works, not optimized (no caching).  needs a bit of testing,
especially on large partitions with many files & directories.

about

ext2fs is an implementation of the ext2 (second extended) file
system, written in limbo, for inferno.  it gives read-only access
to the contents of ext2 file systems.

see the manual page ext2fs(4) for details.

download

get the latest version from:

http://www.ueber.net/code/r/ext2fs

install

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

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

licence & author

this code is in the public domain.  the code is written by mechiel
lukkien, reachable at mechiel@xs4all.nl or mechiel@ueber.net.

todo

• perhaps cache directory blocks while reading directories?
• perhaps more caching? eg inode blocks/parsed inodes, indirect blocks.
• perhaps do latin1 conversion?
• directory content hashing/btree, for faster walk?

• ext2dump: make more useful? eg letting you specify inode to print, directory inode to list.
• ext2dump: allow specifying block/offset to dump superblock from? and finding the group descriptors?
• support for the bitmaps? and some verifications against them?

• handle possible ext3 fields/flags?
• implement writing