f4bb212d6
Rob Landley
2005-01-24
Subject
Much bigger to-do list.
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TODO+98 -2
| @@ -2,10 +2,106 @@ 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.) |