summaryrefslogtreecommitdiff
path: root/TODO
blob: c1d6f01a68da0ae62c4cb4e4ce9a21cba11588a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
TODO list for busybox in no particular order. Just because something
is listed here doesn't mean that it is going to be added to busybox,
or that doing so is even a good idea. It just means that I _might_ get
around to it some time. If you have any good ideas, please let me know.

* login/sulogin/passwd/getty/etc are part of tinylogin, and so are not
    needed or wanted in busybox (or else I'd have to link to libcrypt).

* Networking apps are probably going to be split out some time soon into a
    separate package (named perhaps netkit-tiny?).  This would remove the
    following items from BusyBox: hostid, hostname, nc, nslookup, telnet, 
    and ping.  nfs mounting and syslogd (when it supports network logging)
    will remain in BusyBox.

 -Erik

-----------

Bugs that need fixing:

 - 'grep foo$ file' doesn't work
 - 'grep *foo file' segfaults
 - ps dirent race bug (need to stat the file before attempting chdir)
 - The following commands segfault:
	chmod -R
	chown -R
	chgrp -R
	cp -a -a
	ln -s -s
	rm -f
	rm -f -
	rm -- -
	touch -c
  - I believe that swaponoff may also be also broken (check it).
  - It used to be that BusyBox tar would happily overwrite existing files on
      an extraction.  However, as of 0.42, BusyBox tar simply dies as soon as an 
      existing file is found.
  - Make 'mount -a' work even when /proc isn't mounted (ugly bug).
  - Make 'ln -s /tmp/file .' work the way GNU ln does (i.e. makes a link to 
    /tmp/file in the current directory, rather then trying and failing to create
    a symlink named "." in the current working directory).
  - implement 'ls -R'.


-----------

* Make insmod actually work
* dnsdomainname
* traceroute/netstat
* rdate
* hwclock
* stty
* expr
* wget (or whatever I call it)
* tftp
* ftp
* group/commonize strings, remove dups (for i18n, l10n)


-----------------------

Running the following:

    rm -f busybox && make LDFLAGS+=-nostdlib 2>&1 | \
	sed -ne 's/.*undefined reference to `\(.*\)..*/\1/gp' | sort | uniq

reveals the list of all external (i.e. libc) things that BusyBox depends on.
It would be a very nice thing to reduce this list to an absolute minimum, and
then create a microLibc to provide these functions.  There is no good reason
for GNU libc to be so big.  I'm sure it can be a lot better.

(BTW, this is more informative if BB_FEATURE_NFSMOUNT is turned off...)

Most wanted list:

    [andersen@slag busybox]$ grep -l getgroups *.[ch]
    test.c

Policy violation.  getgroups uses libc nss, which is unlikely
to be present in an embedded system.

To be replaced with a busybox local glob routine:

    [andersen@slag busybox]$ grep -l glob *.[ch]
    gunzip.c
    gzip.c
    sh.c
    tar.c
    telnet.c

Can check_wildcard_match() from utility.c do this job?


-----------------------

Compile with debugging on, run 'nm --size-sort ./busybox'
and then start with the biggest things and make them smaller...

-----------------------

busybox.defs.h is too big and hard to follow.

Perhaps I need to add a better build system (like the Linux kernel?)

-----------------------

Feature request:

/bin/busybox --install -s    which makes all links to commands that it
  can support (an optionnal -s should be used for symbolic links instead
  of hard links).

-----------------------


> Have you ever thought of doig network logging in busybox syslogd ? It
> would quite make sense on embedded systems... :)

So far I had not considered it.  Basically, you wish to have
messages from the embedded box logged to a remote network
syslog box, right?  I can see that this would be useful.
I'll add this to the TODO list,


-----------------------


 I think that the add_inode &c in utility.c needs to also stow the
 st_dev field, and that du.c should NOT call `reset_inode_list'
 because there can be hard links from inside one argv/ to inside
 another argv/.  du.c probably ought to have an -x switch like GNU du
 does also...


------------------------------------------------------------------


Date: 	Fri, 25 Feb 2000 08:23:12 +0000 (GMT)
From: Riley Williams <rhw@MemAlpha.CX>
X-Sender: rhw@moo.cus.org.uk
To: almesber@lrc.di.epfl.ch
Cc: "Albert D. Cahalan" <acahalan@cs.uml.edu>,
	Linux Kernel <linux-kernel@vger.rutgers.edu>
Subject: Re: What /proc should contain [was: /proc/driver/microcode]
In-Reply-To: <20000224165245.A29790@lrc.di.epfl.ch>
Message-ID: <Pine.LNX.4.21.0002250806220.8741-100000@moo.cus.org.uk>
Sender: owner-linux-kernel@vger.rutgers.edu
Precedence: bulk

Hi there.

 >> Nope, most /proc access is does via programs written in C.

 > That varies a lot from file to file. E.g. I haven't seen any
 > programs that are specificly designed to read /proc/atm/* yet,
 > and I know of only one (fuser) that reads /proc/mounts,
 > extracting only partial information (just to pick two examples
 > that I'm quite familiar with).

As a point of reference, here's a slightly tweaked analysis of the
programs on the system I'm reading your mail on. Basically, I ran the
following script...

 Q> #!/bin/bash
 Q> function use() {
 Q>     for Z in $* ; do
 Q>         strings $Z | grep /proc | sed "s=^=$Z ="
 Q>     done
 Q> }
 Q> use /{,s}bin/* /usr/{,s}bin/* | sort -u | tee proc-usage

...and then went through it removing comments and print format
strings. Replace /proc with /dev and you'd soon have an equivalent
list for that - although I can report that such is MUCH larger...

There are three programs therein that refer to /proc/mounts ...

	/bin/mount
	/bin/umount
	/usr/bin/eject

...and, as you stated, none that refer to /proc/atm on this system.
However, as this is a RedHat Linux 5.0 based system, that's not
necessarily an up to date reference thereto...

Here's the list anyway...

/bin/kill /proc/%d/cmdline
/bin/kill /proc/%d/stat

/bin/mount /proc/devices
/bin/mount /proc/filesystems
/bin/mount /proc/mounts

/bin/netstat /proc/net
/bin/netstat /proc/net/appletalk
/bin/netstat /proc/net/ax25
/bin/netstat /proc/net/ax25_route
/bin/netstat /proc/net/dev
/bin/netstat /proc/net/ip_masquerade
/bin/netstat /proc/net/ipx
/bin/netstat /proc/net/ipx_route
/bin/netstat /proc/net/netstat
/bin/netstat /proc/net/nr
/bin/netstat /proc/net/nr_neigh
/bin/netstat /proc/net/nr_nodes
/bin/netstat /proc/net/raw
/bin/netstat /proc/net/route
/bin/netstat /proc/net/rt_cache
/bin/netstat /proc/net/snmp
/bin/netstat /proc/net/tcp
/bin/netstat /proc/net/udp
/bin/netstat /proc/net/unix

/bin/umount /proc/devices
/bin/umount /proc/mounts

/sbin/arp /proc/net/appletalk
/sbin/arp /proc/net/arp
/sbin/arp /proc/net/ax25
/sbin/arp /proc/net/ipx
/sbin/arp /proc/net/nr
/sbin/arp /proc/net/unix

/sbin/cardctl /proc/devices

/sbin/cardmgr /proc/devices

/sbin/fdisk /proc/ide/%s/media
/sbin/fdisk /proc/scsi/scsi

/sbin/getty /proc/version

/sbin/ifconfig /proc/net
/sbin/ifconfig /proc/net/appletalk
/sbin/ifconfig /proc/net/ax25
/sbin/ifconfig /proc/net/dev
/sbin/ifconfig /proc/net/ipx
/sbin/ifconfig /proc/net/nr
/sbin/ifconfig /proc/net/unix

/sbin/ifup /proc/sys/kernel/modprobe

/sbin/ipchains /proc/net/ip_fwchains
/sbin/ipchains /proc/net/ip_fwnames
/sbin/ipchains /proc/net/ip_masquerade
/sbin/ipchains /proc/sys/net/ipv4/ip_forward

/sbin/ipmaddr /proc/net/dev_mcast
/sbin/ipmaddr /proc/net/igmp
/sbin/ipmaddr /proc/net/igmp6

/sbin/iptunnel /proc/net/dev

/sbin/killall5 /proc/%s/cmdline
/sbin/killall5 /proc/%s/exe
/sbin/killall5 /proc/%s/stat
/sbin/killall5 /proc/version

/sbin/klogd /proc/kmsg

/sbin/lsmod /proc/modules

/sbin/modprobe /proc/modules

/sbin/pidof /proc/%s/cmdline
/sbin/pidof /proc/%s/exe
/sbin/pidof /proc/%s/stat
/sbin/pidof /proc/version

/sbin/probe /proc/pci

/sbin/rarp /proc/net/ax25
/sbin/rarp /proc/net/nr
/sbin/rarp /proc/net/rarp

/sbin/rmmod /proc/modules

/sbin/rmmod.static /proc/modules

/sbin/route /proc/net/appletalk
/sbin/route /proc/net/ax25
/sbin/route /proc/net/ax25_route
/sbin/route /proc/net/ipx
/sbin/route /proc/net/ipx_route
/sbin/route /proc/net/nr
/sbin/route /proc/net/nr_neigh
/sbin/route /proc/net/nr_nodes
/sbin/route /proc/net/route
/sbin/route /proc/net/rt_cache
/sbin/route /proc/net/unix

/sbin/scsi_info /proc/scsi
/sbin/scsi_info /proc/scsi/%s
/sbin/scsi_info /proc/scsi/scsi

/sbin/slattach /proc/net/ax25
/sbin/slattach /proc/net/nr

/sbin/swapoff /proc/swaps

/sbin/swapon /proc/swaps

/sbin/uugetty /proc/version

/usr/bin/dig /proc/
/usr/bin/dig /proc/interrupts
/usr/bin/dig /proc/meminfo
/usr/bin/dig /proc/rtc
/usr/bin/dig /proc/self/status
/usr/bin/dig /proc/stat

/usr/bin/dnsquery /proc/
/usr/bin/dnsquery /proc/interrupts
/usr/bin/dnsquery /proc/meminfo
/usr/bin/dnsquery /proc/rtc
/usr/bin/dnsquery /proc/self/status
/usr/bin/dnsquery /proc/stat

/usr/bin/eject /proc/mounts

/usr/bin/emacs /proc/loadavg

/usr/bin/fetchmail /proc/net/dev

/usr/bin/free /proc/meminfo

/usr/bin/gmake /proc/loadavg

/usr/bin/gpm-root /proc/loadavg
/usr/bin/gpm-root /proc/meminfo

/usr/bin/host /proc/
/usr/bin/host /proc/interrupts
/usr/bin/host /proc/meminfo
/usr/bin/host /proc/rtc
/usr/bin/host /proc/self/status
/usr/bin/host /proc/stat

/usr/bin/hoststat /proc/loadavg

/usr/bin/hwdiag /proc/cpuinfo
/usr/bin/hwdiag /proc/pci
/usr/bin/hwdiag /proc/scsi/scsi
/usr/bin/hwdiag /proc/version

/usr/bin/lsdev /proc/dma
/usr/bin/lsdev /proc/interrupts
/usr/bin/lsdev /proc/ioports

/usr/bin/mailq /proc/loadavg

/usr/bin/make /proc/loadavg

/usr/bin/mcookie /proc/loadavg
/usr/bin/mcookie /proc/stat

/usr/bin/newaliases /proc/loadavg

/usr/bin/nslookup /proc/
/usr/bin/nslookup /proc/interrupts
/usr/bin/nslookup /proc/meminfo
/usr/bin/nslookup /proc/rtc
/usr/bin/nslookup /proc/self/status
/usr/bin/nslookup /proc/stat

/usr/bin/nsupdate /proc/
/usr/bin/nsupdate /proc/interrupts
/usr/bin/nsupdate /proc/meminfo
/usr/bin/nsupdate /proc/rtc
/usr/bin/nsupdate /proc/self/status
/usr/bin/nsupdate /proc/stat

/usr/bin/pgp /proc/version
/usr/bin/pgpe /proc/version
/usr/bin/pgpk /proc/version
/usr/bin/pgps /proc/version
/usr/bin/pgpv /proc/version

/usr/bin/procinfo /proc/cmdline
/usr/bin/procinfo /proc/devices
/usr/bin/procinfo /proc/dma
/usr/bin/procinfo /proc/filesystems
/usr/bin/procinfo /proc/interrupts
/usr/bin/procinfo /proc/loadavg
/usr/bin/procinfo /proc/meminfo
/usr/bin/procinfo /proc/modules
/usr/bin/procinfo /proc/stat
/usr/bin/procinfo /proc/uptime
/usr/bin/procinfo /proc/version

/usr/bin/purgestat /proc/loadavg

/usr/bin/screen /proc/loadavg

/usr/bin/strace /proc/%d/stat

/usr/bin/top /proc/cpuinfo
/usr/bin/top /proc/meminfo
/usr/bin/top /proc/stat

/usr/bin/vmstat /proc/%s/stat
/usr/bin/vmstat /proc/meminfo
/usr/bin/vmstat /proc/stat

/usr/sbin/atd /proc/loadavg

/usr/sbin/dnskeygen /proc/
/usr/sbin/dnskeygen /proc/interrupts
/usr/sbin/dnskeygen /proc/meminfo
/usr/sbin/dnskeygen /proc/rtc
/usr/sbin/dnskeygen /proc/self/status
/usr/sbin/dnskeygen /proc/stat

/usr/sbin/fuser /proc/%d/stat
/usr/sbin/fuser /proc/net/%s
/usr/sbin/fuser /proc/net/unix

/usr/sbin/in.identd /proc/net/tcp

/usr/sbin/irpd /proc/
/usr/sbin/irpd /proc/interrupts
/usr/sbin/irpd /proc/meminfo
/usr/sbin/irpd /proc/rtc
/usr/sbin/irpd /proc/self/status
/usr/sbin/irpd /proc/stat

/usr/sbin/named /proc/
/usr/sbin/named /proc/interrupts
/usr/sbin/named /proc/meminfo
/usr/sbin/named /proc/rtc
/usr/sbin/named /proc/self/status
/usr/sbin/named /proc/stat

/usr/sbin/named-xfer /proc/
/usr/sbin/named-xfer /proc/interrupts
/usr/sbin/named-xfer /proc/meminfo
/usr/sbin/named-xfer /proc/rtc
/usr/sbin/named-xfer /proc/self/status
/usr/sbin/named-xfer /proc/stat

/usr/sbin/readprofile /proc/profile

/usr/sbin/rwhod /proc/loadavg
/usr/sbin/rwhod /proc/uptime

/usr/sbin/sendmail /proc/loadavg

/usr/sbin/setconsole /proc/openprom/options
/usr/sbin/setconsole /proc/openprom/options/${console}-mode
/usr/sbin/setconsole /proc/openprom/options/input-device
/usr/sbin/setconsole /proc/openprom/options/output-device

Best wishes from Riley.

 * Copyright (C) 1999, Memory Alpha Systems.
 * All rights and wrongs reserved.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux  |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch.   |
+----------------------------------------------------------------------+
 * http://www.memalpha.cx/Linux/Kernel/


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/