X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=TODO;h=d34572311b4445bb7f23a9d094b3193a02ee262c;hb=34e1941c32cd9366d4ada22c3ab3e42b9c986a2b;hp=bcba2948c5fdb04292a3f4b9c0253c5a87a9f8b5;hpb=e272915e1ffd6978ef3555ce4ae1798a9fbcee56;p=oweals%2Fbusybox.git diff --git a/TODO b/TODO index bcba2948c..d34572311 100644 --- a/TODO +++ b/TODO @@ -4,104 +4,408 @@ 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 in libcrypt). + 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 tiny-netkit?). This currently includes - hostid, hostname, mnc, and ping. - + 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 ----------- -* Allow tar to create archives with sockets, devices, and other special files * Make insmod actually work * dnsdomainname * traceroute/netstat * rdate * hwclock -* killall * stty -* tr -* cut -* expr (maybe?) (ash builtin?) +* expr +* wget (or whatever I call it) +* tftp +* ftp +* group/commonize strings, remove dups (for i18n, l10n) +* consider making a unified option parser (if it can be done + modular, small, etc.) +----------------------- +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. -busybox.defs.h is too big and hard to follow. +(BTW, this is more informative if BB_FEATURE_NFSMOUNT is turned off...) -I either need to add a better build system (like the Linux kernel?) -or I need to split up busybox.defs.h into coherent chunks (i.e. -busybox.defs.h just has a bunch of: +Most wanted list: -#include "fileutils.h" -#include "shellutils.h" + [andersen@slag busybox]$ grep -l getgroups *.[ch] + test.c -which would then have smaller sets of #defines... -Hmm. Needs to be carefully thought out. +Policy violation. getgroups uses libc nss, which is unlikely +to be present in an embedded system. ----------------------- +Compile with debugging on, run 'nm --size-sort ./busybox' +and then start with the biggest things and make them smaller... +----------------------- -Some known bugs, todo items, etc... ------------------------ + 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... + + +------------------------------------------------------------------ + +An interesting email listing some apps that use /proc. BusyBox +tries to avoid /proc as mush as is possible, so this stuff is +interesting (to me at least): + + +Date: Fri, 25 Feb 2000 08:23:12 +0000 (GMT) +From: Riley Williams +X-Sender: rhw@moo.cus.org.uk +To: almesber@lrc.di.epfl.ch +Cc: "Albert D. Cahalan" , + Linux Kernel +Subject: Re: What /proc should contain [was: /proc/driver/microcode] +In-Reply-To: <20000224165245.A29790@lrc.di.epfl.ch> +Message-ID: +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 -[andersen@slag busybox]$ ./busybox du /bin -6213 /bin -[andersen@slag busybox]$ du /bin -2971 /bin -[andersen@slag busybox]$ du --block-size=512 /bin -5943 /bin +...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 ... --rw-r--r-- 1000/1000 4398 2000-01-06 21:55 uniq.c --rw-r--r-- 1000/1000 1568 1999-10-20 18:08 update.c --rw-r----- 0/1000 1168 2000-01-29 21:03 update.o --rw-r--r-- 1000/1000 22820 2000-01-05 11:36 utility.c --rw-r----- 0/1000 7372 2000-01-29 21:03 utility.o -tar: Skipping to next file header -tar: Skipping to next file header -tar: Archive - EOF not on block boundary -tar: Error is not recoverable: exiting now + /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... -#1 You are storing by id instead of name like normal tar. Did you realize this? -(or am I missing some compile option? )ctar did not do this, and I don't think -it's a good idea for LRP. +Here's the list anyway... -#2 -ctar did not produce the EOF error like your tar does. I believe you need to -pad the end of the archive with at least 2 tarsized (512byte) blocks. (I -think???) +/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 -#3 -There is no exclude file(s) option to tar. LRP's packaging system can not -function without this. Will you have the time to add this soon? +/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 -/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). +/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 -cd /mnt -mkdir BACKUP -mv * BACKUP +/usr/sbin/fuser /proc/%d/stat +/usr/sbin/fuser /proc/net/%s +/usr/sbin/fuser /proc/net/unix -Today, "mv" behaved as a cp -a and my disk becomed full. It does not -work properly either when renaming a directory into something else -(it produces a lot of disk activity when doing this). +/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/