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 <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
-[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/
projects / oweals / busybox.git / blobdiff