406 lines
11 KiB
Plaintext
406 lines
11 KiB
Plaintext
TODO list for busybox in no particular order. Just because something
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is listed here doesn't mean that it is going to be added to busybox,
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or that doing so is even a good idea. It just means that I _might_ get
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around to it some time. If you have any good ideas, please let me know.
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* login/sulogin/passwd/getty/etc are part of tinylogin, and so are not
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needed or wanted in busybox (or else I'd have to link to libcrypt).
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* Networking apps are probably going to be split out some time soon into a
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separate package (named perhaps netkit-tiny?). This would remove the
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following items from BusyBox: hostid, hostname, nc, nslookup, telnet,
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and ping. nfs mounting and syslogd (when it supports network logging)
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will remain in BusyBox.
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-Erik
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-----------
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* dnsdomainname
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* traceroute/netstat
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* hwclock
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* stty
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* tftp
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* ftp
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* group/commonize strings, remove dups (for i18n, l10n)
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-----------------------
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Running the following:
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rm -f busybox && make LDFLAGS+=-nostdlib 2>&1 | \
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sed -ne 's/.*undefined reference to `\(.*\)..*/\1/gp' | sort | uniq
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reveals the list of all external (i.e. libc) things that BusyBox depends on.
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It would be a very nice thing to reduce this list to an absolute minimum, and
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then create a microLibc to provide these functions. There is no good reason
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for GNU libc to be so big. I'm sure it can be a lot better.
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(BTW, this is more informative if BB_FEATURE_NFSMOUNT is turned off...)
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Most wanted list:
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[andersen@slag busybox]$ grep -l getgroups *.[ch]
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test.c
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Policy violation. getgroups uses libc nss, which is unlikely
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to be present in an embedded system.
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-----------------------
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Compile with debugging on, run 'nm --size-sort ./busybox'
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and then start with the biggest things and make them smaller...
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-----------------------
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I think that the add_inode &c in utility.c needs to also stow the
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st_dev field, and that du.c should NOT call `reset_inode_list'
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because there can be hard links from inside one argv/ to inside
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another argv/. du.c probably ought to have an -x switch like GNU du
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does also...
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------------------------------------------------------------------
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An interesting email listing some apps that use /proc. BusyBox
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tries to avoid /proc as mush as is possible, so this stuff is
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interesting (to me at least):
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Date: Fri, 25 Feb 2000 08:23:12 +0000 (GMT)
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From: Riley Williams <rhw@MemAlpha.CX>
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X-Sender: rhw@moo.cus.org.uk
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To: almesber@lrc.di.epfl.ch
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Cc: "Albert D. Cahalan" <acahalan@cs.uml.edu>,
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Linux Kernel <linux-kernel@vger.rutgers.edu>
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Subject: Re: What /proc should contain [was: /proc/driver/microcode]
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In-Reply-To: <20000224165245.A29790@lrc.di.epfl.ch>
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Message-ID: <Pine.LNX.4.21.0002250806220.8741-100000@moo.cus.org.uk>
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Sender: owner-linux-kernel@vger.rutgers.edu
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Precedence: bulk
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Hi there.
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>> Nope, most /proc access is does via programs written in C.
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> That varies a lot from file to file. E.g. I haven't seen any
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> programs that are specificly designed to read /proc/atm/* yet,
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> and I know of only one (fuser) that reads /proc/mounts,
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> extracting only partial information (just to pick two examples
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> that I'm quite familiar with).
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As a point of reference, here's a slightly tweaked analysis of the
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programs on the system I'm reading your mail on. Basically, I ran the
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following script...
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Q> #!/bin/bash
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Q> function use() {
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Q> for Z in $* ; do
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Q> strings $Z | grep /proc | sed "s=^=$Z ="
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Q> done
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Q> }
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Q> use /{,s}bin/* /usr/{,s}bin/* | sort -u | tee proc-usage
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...and then went through it removing comments and print format
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strings. Replace /proc with /dev and you'd soon have an equivalent
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list for that - although I can report that such is MUCH larger...
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There are three programs therein that refer to /proc/mounts ...
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/bin/mount
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/bin/umount
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/usr/bin/eject
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...and, as you stated, none that refer to /proc/atm on this system.
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However, as this is a RedHat Linux 5.0 based system, that's not
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necessarily an up to date reference thereto...
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Here's the list anyway...
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/bin/kill /proc/%d/cmdline
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/bin/kill /proc/%d/stat
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/bin/mount /proc/devices
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/bin/mount /proc/filesystems
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/bin/mount /proc/mounts
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/bin/netstat /proc/net
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/bin/netstat /proc/net/appletalk
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/bin/netstat /proc/net/ax25
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/bin/netstat /proc/net/ax25_route
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/bin/netstat /proc/net/dev
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/bin/netstat /proc/net/ip_masquerade
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/bin/netstat /proc/net/ipx
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/bin/netstat /proc/net/ipx_route
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/bin/netstat /proc/net/netstat
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/bin/netstat /proc/net/nr
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/bin/netstat /proc/net/nr_neigh
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/bin/netstat /proc/net/nr_nodes
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/bin/netstat /proc/net/raw
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/bin/netstat /proc/net/route
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/bin/netstat /proc/net/rt_cache
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/bin/netstat /proc/net/snmp
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/bin/netstat /proc/net/tcp
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/bin/netstat /proc/net/udp
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/bin/netstat /proc/net/unix
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/bin/umount /proc/devices
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/bin/umount /proc/mounts
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/sbin/arp /proc/net/appletalk
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/sbin/arp /proc/net/arp
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/sbin/arp /proc/net/ax25
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/sbin/arp /proc/net/ipx
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/sbin/arp /proc/net/nr
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/sbin/arp /proc/net/unix
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/sbin/cardctl /proc/devices
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/sbin/cardmgr /proc/devices
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/sbin/fdisk /proc/ide/%s/media
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/sbin/fdisk /proc/scsi/scsi
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/sbin/getty /proc/version
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/sbin/ifconfig /proc/net
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/sbin/ifconfig /proc/net/appletalk
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/sbin/ifconfig /proc/net/ax25
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/sbin/ifconfig /proc/net/dev
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/sbin/ifconfig /proc/net/ipx
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/sbin/ifconfig /proc/net/nr
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/sbin/ifconfig /proc/net/unix
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/sbin/ifup /proc/sys/kernel/modprobe
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/sbin/ipchains /proc/net/ip_fwchains
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/sbin/ipchains /proc/net/ip_fwnames
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/sbin/ipchains /proc/net/ip_masquerade
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/sbin/ipchains /proc/sys/net/ipv4/ip_forward
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/sbin/ipmaddr /proc/net/dev_mcast
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/sbin/ipmaddr /proc/net/igmp
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/sbin/ipmaddr /proc/net/igmp6
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/sbin/iptunnel /proc/net/dev
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/sbin/killall5 /proc/%s/cmdline
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/sbin/killall5 /proc/%s/exe
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/sbin/killall5 /proc/%s/stat
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/sbin/killall5 /proc/version
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/sbin/klogd /proc/kmsg
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/sbin/lsmod /proc/modules
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/sbin/modprobe /proc/modules
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/sbin/pidof /proc/%s/cmdline
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/sbin/pidof /proc/%s/exe
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/sbin/pidof /proc/%s/stat
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/sbin/pidof /proc/version
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/sbin/probe /proc/pci
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/sbin/rarp /proc/net/ax25
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/sbin/rarp /proc/net/nr
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/sbin/rarp /proc/net/rarp
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/sbin/rmmod /proc/modules
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/sbin/rmmod.static /proc/modules
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/sbin/route /proc/net/appletalk
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/sbin/route /proc/net/ax25
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/sbin/route /proc/net/ax25_route
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/sbin/route /proc/net/ipx
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/sbin/route /proc/net/ipx_route
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/sbin/route /proc/net/nr
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/sbin/route /proc/net/nr_neigh
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/sbin/route /proc/net/nr_nodes
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/sbin/route /proc/net/route
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/sbin/route /proc/net/rt_cache
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/sbin/route /proc/net/unix
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/sbin/scsi_info /proc/scsi
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/sbin/scsi_info /proc/scsi/%s
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/sbin/scsi_info /proc/scsi/scsi
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/sbin/slattach /proc/net/ax25
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/sbin/slattach /proc/net/nr
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/sbin/swapoff /proc/swaps
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/sbin/swapon /proc/swaps
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/sbin/uugetty /proc/version
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/usr/bin/dig /proc/
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/usr/bin/dig /proc/interrupts
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/usr/bin/dig /proc/meminfo
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/usr/bin/dig /proc/rtc
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/usr/bin/dig /proc/self/status
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/usr/bin/dig /proc/stat
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/usr/bin/dnsquery /proc/
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/usr/bin/dnsquery /proc/interrupts
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/usr/bin/dnsquery /proc/meminfo
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/usr/bin/dnsquery /proc/rtc
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/usr/bin/dnsquery /proc/self/status
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/usr/bin/dnsquery /proc/stat
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/usr/bin/eject /proc/mounts
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/usr/bin/emacs /proc/loadavg
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/usr/bin/fetchmail /proc/net/dev
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/usr/bin/free /proc/meminfo
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/usr/bin/gmake /proc/loadavg
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/usr/bin/gpm-root /proc/loadavg
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/usr/bin/gpm-root /proc/meminfo
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/usr/bin/host /proc/
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/usr/bin/host /proc/interrupts
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/usr/bin/host /proc/meminfo
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/usr/bin/host /proc/rtc
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/usr/bin/host /proc/self/status
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/usr/bin/host /proc/stat
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/usr/bin/hoststat /proc/loadavg
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/usr/bin/hwdiag /proc/cpuinfo
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/usr/bin/hwdiag /proc/pci
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/usr/bin/hwdiag /proc/scsi/scsi
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/usr/bin/hwdiag /proc/version
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/usr/bin/lsdev /proc/dma
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/usr/bin/lsdev /proc/interrupts
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/usr/bin/lsdev /proc/ioports
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/usr/bin/mailq /proc/loadavg
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/usr/bin/make /proc/loadavg
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/usr/bin/mcookie /proc/loadavg
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/usr/bin/mcookie /proc/stat
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/usr/bin/newaliases /proc/loadavg
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/usr/bin/nslookup /proc/
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/usr/bin/nslookup /proc/interrupts
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/usr/bin/nslookup /proc/meminfo
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/usr/bin/nslookup /proc/rtc
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/usr/bin/nslookup /proc/self/status
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/usr/bin/nslookup /proc/stat
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/usr/bin/nsupdate /proc/
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/usr/bin/nsupdate /proc/interrupts
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/usr/bin/nsupdate /proc/meminfo
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/usr/bin/nsupdate /proc/rtc
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/usr/bin/nsupdate /proc/self/status
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/usr/bin/nsupdate /proc/stat
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/usr/bin/pgp /proc/version
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/usr/bin/pgpe /proc/version
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/usr/bin/pgpk /proc/version
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/usr/bin/pgps /proc/version
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/usr/bin/pgpv /proc/version
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/usr/bin/procinfo /proc/cmdline
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/usr/bin/procinfo /proc/devices
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/usr/bin/procinfo /proc/dma
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/usr/bin/procinfo /proc/filesystems
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/usr/bin/procinfo /proc/interrupts
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/usr/bin/procinfo /proc/loadavg
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/usr/bin/procinfo /proc/meminfo
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/usr/bin/procinfo /proc/modules
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/usr/bin/procinfo /proc/stat
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/usr/bin/procinfo /proc/uptime
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/usr/bin/procinfo /proc/version
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/usr/bin/purgestat /proc/loadavg
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/usr/bin/screen /proc/loadavg
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/usr/bin/strace /proc/%d/stat
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/usr/bin/top /proc/cpuinfo
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/usr/bin/top /proc/meminfo
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/usr/bin/top /proc/stat
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/usr/bin/vmstat /proc/%s/stat
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/usr/bin/vmstat /proc/meminfo
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/usr/bin/vmstat /proc/stat
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/usr/sbin/atd /proc/loadavg
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/usr/sbin/dnskeygen /proc/
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/usr/sbin/dnskeygen /proc/interrupts
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/usr/sbin/dnskeygen /proc/meminfo
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/usr/sbin/dnskeygen /proc/rtc
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/usr/sbin/dnskeygen /proc/self/status
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/usr/sbin/dnskeygen /proc/stat
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/usr/sbin/fuser /proc/%d/stat
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/usr/sbin/fuser /proc/net/%s
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/usr/sbin/fuser /proc/net/unix
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/usr/sbin/in.identd /proc/net/tcp
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/usr/sbin/irpd /proc/
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/usr/sbin/irpd /proc/interrupts
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/usr/sbin/irpd /proc/meminfo
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/usr/sbin/irpd /proc/rtc
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/usr/sbin/irpd /proc/self/status
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/usr/sbin/irpd /proc/stat
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/usr/sbin/named /proc/
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/usr/sbin/named /proc/interrupts
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/usr/sbin/named /proc/meminfo
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/usr/sbin/named /proc/rtc
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/usr/sbin/named /proc/self/status
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/usr/sbin/named /proc/stat
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/usr/sbin/named-xfer /proc/
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/usr/sbin/named-xfer /proc/interrupts
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/usr/sbin/named-xfer /proc/meminfo
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/usr/sbin/named-xfer /proc/rtc
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/usr/sbin/named-xfer /proc/self/status
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/usr/sbin/named-xfer /proc/stat
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/usr/sbin/readprofile /proc/profile
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/usr/sbin/rwhod /proc/loadavg
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/usr/sbin/rwhod /proc/uptime
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/usr/sbin/sendmail /proc/loadavg
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/usr/sbin/setconsole /proc/openprom/options
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/usr/sbin/setconsole /proc/openprom/options/${console}-mode
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/usr/sbin/setconsole /proc/openprom/options/input-device
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/usr/sbin/setconsole /proc/openprom/options/output-device
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Best wishes from Riley.
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* Copyright (C) 1999, Memory Alpha Systems.
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* All rights and wrongs reserved.
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+----------------------------------------------------------------------+
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| There is something frustrating about the quality and speed of Linux |
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| development, ie., the quality is too high and the speed is too high, |
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| in other words, I can implement this XXXX feature, but I bet someone |
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| else has already done so and is just about to release their patch. |
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+----------------------------------------------------------------------+
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* http://www.memalpha.cx/Linux/Kernel/
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-
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