mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
108 lines
4.5 KiB
Plaintext
108 lines
4.5 KiB
Plaintext
Busybox TODO
|
|
|
|
Stuff that needs to be done
|
|
|
|
tr - missing SuS3 features in busybox 1.0pre10
|
|
|
|
tr doesnt support [:blank:], [:digit:] or other predefined classes, [=equiv=]
|
|
support is also missing.
|
|
----
|
|
find
|
|
doesn't understand () or -exec, and these are actually used out in the real
|
|
world. The "make uninstall" of lots of things (including busybox itself)
|
|
breaks because of this, and sometimes even "make install" (like udev).
|
|
----
|
|
comm
|
|
Perl needs "comm" to build. It's small and simple, but we haven't got it.
|
|
---
|
|
sh
|
|
The command shell situation is a big mess. We have three or four different
|
|
shells that don't really share any code, and the "standalone shell" doesn't
|
|
work all that well (especially not in a chroot environment), due to apps not
|
|
being reentrant. Unifying the various shells and figuring out a configurable
|
|
way of adding the minimal set of bash features a given script uses is a big
|
|
job, but it be a big improvement.
|
|
---
|
|
gzip
|
|
Can't handle compressing multiple files at once. (I don't mean making a
|
|
multiple file archive, I mean compressing more than one file at a time.)
|
|
Some global variables aren't re-initialized between runs.
|
|
---
|
|
gunzip
|
|
same problem as gzip. "gunzip one.gz two.gz three.gz" doesn't work for
|
|
two.gz and three.gz due to global variables not getting reset.
|
|
---
|
|
diff
|
|
We should have a diff -u command. We have patch, we should have diff
|
|
(we only need to support unified diffs though).
|
|
---
|
|
patch
|
|
should have -i support, and simple fuzz factor support to apply patches
|
|
at an offset shouldn't take up too much space.
|
|
---
|
|
man
|
|
It would be nice to have a man command. Not one that handles troff or
|
|
anything, just one that can handle preformatted ascii man pages, possibly
|
|
compressed. This could probably be a script in the extras directory that
|
|
calls cat/zcatbzcat | more
|
|
---
|
|
less
|
|
More sucks if you're used to less. A tiny less implementation would be
|
|
very nice.
|
|
---
|
|
bzip2
|
|
Compression-side support.
|
|
|
|
|
|
Architectural issues:
|
|
|
|
Do a SUSv3 audit
|
|
Look at the full Single Unix Specification version 3 (available online at
|
|
"http://www.opengroup.org/onlinepubs/009695399/nfindex.html") and
|
|
figure out which of our apps are compliant, and what we're missing that
|
|
we might actually care about.
|
|
|
|
Even better would be some kind of automated compliance test harness that
|
|
exercises each command line option and the various corner cases.
|
|
--
|
|
Unify archivers
|
|
Lots of archivers have the same general infrastructure. The directory
|
|
traversal code should be factored out, and the guts of each archiver could
|
|
be some setup code and a series of callbacks for "add this file",
|
|
"add this directory", "add this symlink" and so on.
|
|
|
|
This could clean up tar and zip, and make it cheaper to add cpio and ar
|
|
write support, and possibly even cheaply add things like mkisofs someday,
|
|
if it becomes relevant.
|
|
---
|
|
Text buffer support.
|
|
Several existing applets and potential additions (sort, vi, less...) read
|
|
a whole file into memory and act on it. There might be an opportunity
|
|
for shared code in there that could be moved into libbb...
|
|
---
|
|
Individual compilation of applets.
|
|
It would be nice if busybox had the option to compile to individual applets,
|
|
for people who want an alternate implementation less bloated than the gnu
|
|
utils (or simply with less political baggage), but without it being one big
|
|
executable.
|
|
|
|
Turning libbb into a real dll is another possibility, especially if libbb
|
|
could export some of the other library interfaces we've already more or less
|
|
got the code for (like zlib).
|
|
---
|
|
buildroot - Make a "dogfood" option
|
|
Busybox is now capable of replacing most gnu packages for real world use,
|
|
such as developing software or in a live CD. A system built from busybox
|
|
(1.00 with updated sort.c), uclibc 0.9.27, gcc, binutils, make, and a few
|
|
other development tools (http://www.landley.net/code/firmware has an example
|
|
system using autoconf, automake, bison, flex, libtools, m4, zlib,
|
|
and groff: dunno what subset of that is actually necessary) is capable of
|
|
rebuilding itself, from scratch, under itself.
|
|
|
|
It would be a good "eating our own dogfood" test if buildroot had the option
|
|
of using busybox instead of bzip2, coreutils, file, findutils, gawk, grep,
|
|
inetutils, modutils, net-tools, procps, sed, shadow, sysklogd, sysvinit, tar,
|
|
util-linux, and vim. Anything that's wrong with the resulting system, we
|
|
can fix. (It would be nice to be able to upgrade busybox to be able to
|
|
replace bash, diffutils, gzip, less, and patch as well.)
|