[oweals/busybox.git] / Changelog

0.42

        * changed fsck_minix.c to reduce its .bss size significantly
          -beppu -piptigger
        * Fairly massive restructuring of umount.c to deal with remounting 
          busy devices read-only. Adds a -r option to control that; it is 
          optionally compiled in with BB_FEATURE_REMOUNT
        * Added a bunch of functions to mtab.c to interact with the
          {get,set,end}mntent interface; as it turns out, those functions do
          not appear to be re-entrant, and that causes a lot of problems with
          the way umount was originally written.
        * Makes init send TERM and KILL (instead of HUP and KILL) on reboot
          to be more consistent with sysvinit
        * Changes to init.c to use the new -r option to umount. Also increased
          the sleep time between the time the TERM and KILL signals are sent

        - Randolph Chung


        * cp.c, mv.c: removed, replaced by cp_mv.c which has been
            extensively rewritten from the original cp.c.
        * Also added a warning message to the `mv' usage string saying that
            this is not GNU mv, and it will break hard links. cp also breaks
            hard links.
        * ln.c: implemented `-n' switch, no-deref symlinks.
        * include<sys/param.h>: and use PATH_MAX everywhere.
        * busybox: File name buffer overrun guards to prevent future crashes.
            - Always check exit status.
            - Purge all use of `creat()', replace with `open()'.
        * utility.c 
            - recursiveAction was overriding the value of 
                followLinks thus ignoring it.
            - isDirectory now takes a followLinks boolean, updated all callers
            - copyFile had the followLinks logic reversed.
        * messages.c: New file. Put common error message strings all in
            one place in an attempt to shrink the binary a little.

        -Karl M. Hegbloom


        * Made tar creation support in busybox tar optional.
        * You no longer _have_ to put a "-" in front of tar options.
        * Tar could inadvertently change permissions and ownership on
            certain directories pointed to by symlinks.
        * Made grep and grep -h do the right thing wrt printing
            the file name (it failed to print files names in many cases).
        * Fix a namespace aliasing problem wereby if du was built in, the 
            symlink for both du and dutmp would be installed, or then rm was 
            built in, the symlinks for both rm and rmmod would be installed.
        * Added a closelog() to init.c after loging -- fix thanks to 
            Taketoshi Sano <kgh12351@nifty.ne.jp>
        * Rewrote and simplified logger.  Added the "-t" option, and made it
            behave itself a bit better.
        * Optional support contributed by Ben Collins <bcollins@debian.org> 
            for the kernel init chroot patch by Werner Almesberger, which 
            allows init to chroot to a new device, and umount the old one.
        * Fixed bug that wouldn't let one chown a symlink -- it would
            always dereference before.  -beppu
        * Fixed a bug where init could have reference already freed memory.
            Found and fixed by Taketoshi Sano <kgh12351@nifty.ne.jp>
        * Several contributions from Friedrich Vedder <fwv@myrtle.lahn.de>
        * Added (and documented) "-n" option for head - 
        * Cleanup for a number of usage messages -- also 
            contributed Friedrich Vedder <fwv@myrtle.lahn.de>
        * Cosmetic fix to busybox.c (Don't print a comma at the
            end of line if there are no more application names).
        * Fixed a stupid bug in "head" option handling ("head -n" 
            would segfault).
        * Moved commonly used functions "xmalloc()" and "exit()"
            to utility.c (with proper #ifdef's).
        * Created a tiny tail implementation, removing -c, -q, -v, and making
            tail -f work only with a single file.  This reduced tail 
            from 6k to 2.4k.  The bigger/more featured tail can still be
            had by disabling BB_FEATURE_SIMPLE_TAIL in dusybox.defs.h
        * Ping now falls back to doing the right thing if /etc/protocols
            turns up missing.
        * Fixed mount and umount.  Previously they could leak loop device 
            allocations, causing the system to quickly run out.  Fix for umount
            by Ben Collins <bcollins@debian.org>, and mount was fixed by me.
        * ls formatting on eight charactor user names fixed by 
            Randolph Chung <tausq@debian.org>.
        * cp could, when copying symlinks, change permissions of the
            files pointed to by the symlinks.
        * Several fixes from Pavel Roskin <pavel_roskin@geocities.com>:
            - `chown' with 1 argument displayed the error incorrectly
            - `fdflush', `length' and `printf' crashed when run without arguments
            - `fdflush' tried to flush itself using *argv
            - added "skip" and "seek" to dd.
        * swapoff -a was not working.  Now it is.
        * init did not cleanly unmount filesystems on reboot.  Now it does.
        * "sed -ne s/foo/bar/" worked but "sed -n -e s/foo/bar/" didn't.
            Now both work.
        * Some architectures (PowerPc) assume chars are unsigned, so they could
            not distinguish between EOF and '\0xFF' in sed.  Sed now uses ints.


        -Erik Andersen

0.41
        * New Apps: wc, hostid, logname, tty, whoami, yes -- all contributed 
            by Edward Betts <edward@debian.org>
        * Fixed a bug in both cp and mv preventing 'cp foo/README bar'
            type commands (file in a directory to another directory) 
            from working.
        * Fixed a logger bug that caused garbage to be written to the syslog 
            (unless you used busybox syslog, which hid the bug).  Thanks
            to Alex Holden <alex@linuxhacker.org> for the fix.
        * /bin/true and /bin/false were echoing a blank line when run.  Now fixed.
        * mkdir -p would print an error when asked to mkdir an existing dir
            with no interveining subdirectories.
        * Fixed "syslogd -O" so that it works.
        * Added -o loop option for mount, and support in umount for loop
          devices. Support is toggled by MOUNT_LOOP feature -- Ben Collins
          <bcollins@debian.org>
        * Several fixes from Marco Pantaleoni <panta@prosa.it>
            * compile in fullWrite() not only if BB_TAR is defined, but also
                if BB_CP or BB_MV are (fullWrite() is referenced by copyFile())
            * add some compiler optimizations to further reduce executable size
                (as a side note, on my machines the largest code is generated by
                gcc 2.95.2 with -Os ! The smallest by plain gcc 2.7.2.3 with -O2
                -m386 ...)
            * Compile no longer fails if busybox.def.h defines BB_FEATURE_LINUXRC 
                but not BB_INIT.  (init_main used to be referenced, but not compiled)
        * Fixed a bug in setting TERM for serial console support.  TERM now
            defaults to "ansi" for serial consoles.
        * Fixed a bug in handling the CONSOLE env. variable for serial consoles.

        -Erik Andersen, Jan 15, 2000

0.40
        * New Apps: sort, uniq. -beppu
        * New Apps: lsmod, rmmod -erik
        * New Apps: fbset contributed by Randolph Chung <tausq@debian.org>.
        * New App:: loadacm contributed by Peter Novodvorsky <petya@logic.ru>
            for loading application character maps for Unicode fonts.
        * Major init re-work.  init now supports inittab (slightly different
            but similar to sysvinit), allowing me to get all the policy out
            of init and into the conf file.  It works just fine without inittab
            being present, but if you dont like the defautl behavior you can
            now do something about it.  Init is much cleaner as a result.
        * Fixed an bug in syslogd causing it to stop after 20 minutes. -erik
        * Fixed an embarrasing segfault in head -beppu
        * Fixed the embarrasing failure of 'logger -p'. -erik
        * Added the -s option to du -beppu
        * Re-worked the source tree a bit so it will compile under glibc 2.0.7 
            with the 2.0.x Linux kernel.
        * Added 'grep -q' thanks to a patch from "Konstantin Boldyshev" 
            <konst@voshod.com>.
        * Grep -i previously failed on UPPER CASE patterns due to a silly 
            regexp implementation bug that is now fixed.
        * Fixed a bug where tar would set, and then clear SGID and SUID bits.
        * Fixed a bug where tar would not set the user and group on device
            special files.
        * Fixed a bug where tar would not restore the time to files.
        * Fixed a major security problem with tar -- it changed ownership 
            of any file pointed to by a symlink to 777 (like say libc....)
            Ouch!!!
        * cp and mv were very broken when moving directories.  I have rewritten 
            them so they should now work as expected. 
        * sed now supports addresses (numeric or regexp, with negation) and 
            has an append command, thanks to Marco Pantaleoni <panta@prosa.it>
        * Fixed dmesg.  It wasn't parsing its options (-n or -s) properly.  
        * Some cosmetic fixes to ls output formatting to make it behave more
            like GNU ls.
        * Fixed a stupid segfault in kill.
        * Several fixes from Friedrich Vedder <fwv@myrtle.lahn.de>:
            - Added gunzip -t, removed gunzip.c dead code,
            - fixed several typos
            - Glibc 2.0.7 and libc5 compile fixes
        * Fixed a bug where 'mknod --help' would segfault.
            

        -Erik Andersen, Jan 07, 2000

0.39 
        * New Apps: ping, hostname, and mkfifo contributed by Randolph Chung
            <tausq@debian.org>.  3 items off the TODO list!
        * I wrote free (just calls "cat /proc/meminfo").
        * Added tail, based on tail from GNU textutils-1.19, but adjusted
            to suit my evil purposes.  Costs 6k.  I'll make it smaller sometime.
        * on reboot, init called 'umount -a -n', which caused errors
            when BB_MTAB was not enabled.  Changed to 'umount -a',
            which does the right thing.
        * init will now try to run /sbin/getty if it is present (for easy
            integration with the about-to-be-released tinylogin.)
        * kill now behaves itself properly, added 'kill -l' to list signals
        * 'ls -l' was failing on long directories, since my_getid was leaking 
            one file descriptor per file.  Oops.
        * Fixed rebooting from init.  I'd accidently left some debugging code in
            which blocked reboots.
        * Fixed reboot, halt (and added poweroff) such that they handle it when
            init is not at PID 1 (like when running in an initrd).
        * Added a prelinary du implementation.  Some parameter parsing
            stuff still needs to be added. -beppu (John Beppu <beppu@lineo.com>)
        * Implemented tee.  -beppu
        * Implemented head. -beppu

        -Erik Andersen, Dec 10, 1999

0.38
        * Fixed a segfault in 'umount -a' when a badly formed /etc/fstab
            file existed.
        * df will not exit on error, but will stat all mounted filesystems.
        * Fixed tar so uid/gid/permissions on extracted tarballs will be correct.
        * Fixed find -name so it properly uses shell wildcard patterns 
            (i.e. `*', `?', and `[]') instead of regular expressions, which
            was causing some confusing and unexpected behavior.
        * Added klogd to syslogd, so now the log will contain both system and
            kernel messages.
        * syslogd now creates the /dev/log socket to make sure it is there, and
            is actually a socket with the right permissions.
        * I've taken a first step to making busybox not need the /proc 
            filesystem.  Most apps don't need it.  Those that _require_ it, 
            will complain if you enable them when you disable 
            BB_FEATURE_USE_PROCFS.
           
        -Erik Andersen, Dec 5, 1999

0.37
        * Wrote a micro syslogd, and a logger util (to log things to the syslog
            from the command line or scripts)  With both compiled in, costs 4k.
        * Fixed 'make install' so symlinks are installed in their proper locations.
        * Changed the build system slightly so that features can now be enabled
            or disabled from the busybox.defs.h header file, without trying to 
            compile in a source file named after that featue (unless that file exists).
        * Several options are now moved into busybox.defs.h
        * Now 'rm -R' and 'rm -r' both work.
        * dd now properly handles input beyond 1 block from stdin.
        * Fixed a bug where tar unpacked everything a directories. Moved some code 
            from createPath into mkdir where it belonged, thereby making tar work properly.
        * Fixed an off-by-one bug in cat.  Given a list of file it wouldn't cat out the
            last file in the list.
        * Fixed 'ls -ln' so numeric group/uid are presented properly, and fixed 'ls -l' 
            so when uid/gid is not in /etc/{passwd,group} the numeric group/uid are 
            presented properly.  
        * Also added a TODO.


        -Erik Andersen, Nov 25, 1999

0.36
        * fixed dd so it properly defaults to stdin and stdout when no 
            if= and of= are set (fix thanks to Eric Delaunay).
        * Don't try to close the file descriptor of a pipein tar. (fix also from
            Eric Delaunay).
        * Made createPath be quiet (again thanks to Eric Delaunay).
        * If BB_CONSOLE_CMD_IF_RC_SCRIPT_EXITS is defined, then whatever
            command you define it as will be run if the init script exits.
        * Updated install.sh to make it more robust (thanks to Adam Di Carlo)
        * NFS support added to mount by Eric Delaunay.  It costs 10k when compiled
            in, but that is still a big win for those that use NFS.
        * Made 'rm -f' be silent for non-existant files (thanks to Eric Delaunay).
        * changed zcat.c to gunzip.c.  It now obeys the principle of least surprise 
            and acts as god intended gunzip and zcat to act.  They answer --help and
            obey the '-c' flag.
        * Fixed a bug in mv which caused it to not move files when the destination
            was a directory.
        * Fixed a decimal-instead-of-octal bug causing mkdir to make directories
            with very wrong permissions.
        * chmod would overwrite file permissions instead of modifying them.
            Now it properly modifies permissions.
        * Init now sends warnings destined for the console to /dev/console to ensure
            they show up on whatever the active console it.  Otherwise important
            messages (for example that the system is rebooting) were not seen when
            switched to a different VT.

        -Erik Andersen, Nov 17, 1999
        
0.35
        * gzip now obeys the principle of least surprise and acts like god intended 
            (i.e. it accepts a file name, answers --help, and obeys the '-c' flag 
            and only then outputs to stdout).
        * Fixed more.c to compile autowidth on sparc and set initial winsize 
            to 0,0 in case the TIOCGWINSZ ioctl fails.  Fix thanks to Eric Delaunay.
        * Fixed tar so it now works as expected (it had TRUE/FALSE backwards)
        * tar now accepts --help
        * chmod, chown, and chgrp usage now works
        * General usage (i.e. --help) cleanups for most apps
        * umount now parses options correctly
        * tar can now unpack tarballs containing device special files, 
            sockets, and fifos (though it can't pack them up) thanks 
            to Matt Porter.  Creating archives containing these is still
            left to the interested student.
        * fixed up the license in more.c to properly point to Bruce Perens.

        -Erik Andersen, Nov  11, 1999

0.34
        * ls -l now displays link names outside the current directory,
            Patch thanks to Eric Delaunay
        * init now properly handles sparc serial consoles and does a
            better job of finding the real console device rather than using
            /dev/console which doesn't support job control. Patch also
            thanks to Eric Delaunay.
        * more started to read from stdin after the last file was finished, and 
            options were not parsed correctly (fix thanks to Eric Delaunay).
        * more will now use the terminal size if BB_FEATURE_AUTOWIDTH is on.
        * rm wouldn't remove a symlink unless the symlink was valid.  This was
            a side effect of the busybox 0.32 recursiveAction() fix.  Things 
            should now work correctly.
        * grep wouldn't grep stdin.  Now it does.
        * sed wouldn't sed stdin.  Now it does.
        * sed was appending a \n to the end of lines with replacements.
            Now it doesn't do that.
        * ls -l now bypasses libc6 nss when displaying user/group names.
            Now uses my_getpwuid and my_getgrgid.

         -Erik Andersen, Nov  8, 1999

0.33
        * Fixed a bug where init could hang instead of rebooting.
        * Removed some debugging noise from init.c
        * Fixed ln so it works now (it was very broken).
        * Fixed df so it won't segfault when there is no /etc/fstab,
        * If BB_MTAB is not defined, df and mount will whine if /etc/fstab
            is not installed (since they cannot fixup "/dev/root" to 
            state the real root device name)
        * merged some redundant code from mtab.c/df.c into utility.c

         -Erik Andersen, Nov  5, 1999

0.32
        * More changes -- many thanks to Lineo for paying me to work on
            busybox.  If you have any problems please let me know ASAP
            at andersen@lineo.com or andersee@debian.org
        * usage() now prints the BusyBox version.  This will help folks
            realize that they are not in Kansas anymore.
        * Fixed mkdir -m option so that it works.
        * kill segfaulted w/o any arguments.  Now it doesn't do that.
        * kill wasn't properly accepting signal names.  It does now.
        * Added new apps chvt and deallocvt (I should probably add open)
        * Major rewrite of init.c.  Code is now readable by mere mortals IMHO.
        * Wrote sed -- weighs only 1.8k (5.8k with full regular expressions!).
        * Fixed a stupid seg-fault in sync
        * Fixed mount -- mount -a failed to parse and apply mount options
        * Fixed umount -n (patch thanks to Matthew Grant <grantma@anathoth.gen.nz>)
        * umount -a no longer umounts /proc
        * Added BB_MTAB, allowing (at the cost of ~1.5k and the need for a rw /etc)
            folks to use a real /etc/mtab file instead of a symlink to /proc/mounts.
            mount, and umount will add/remove entries and df will now use /etc/mtab 
            if BB_MTAB is defined. 
        * Fixed a nice bug in recursiveAction() which caused it to infinitely
            hunt through /proc/../fd/* creating new file descriptors if it
            followed the /dev/fd link over to /proc.  recursiveAction() now 
            lstat's the file when followLinks==FALSE so it won't follow links 
            as the name suggests.  Fix thanks to Matt Porter <porter@debian.org>.


         -Erik Andersen, Nov  4, 1999

0.31
        * I added a changelog for version 0.30. 
        * adjusted find internals to make it smaller, and removed 
            some redundancy.
        * Fixed a segfault in ps when /etc/passwd or /etc/group 
            are absent.  Now will warn you and carry on.
        * Added in optional _real_ regular expression support (to be
            the basis for a future sed utility).  When compiled in
            it adds 3.9k, but makes grep much more capable.
        * Checked out using nftw(3) for recursive stuff, but unfortunatly
            it wasn't supported before GNU libc 2.1, and some folks use
            glibc 2.0.7 since it is much smaller than that latest and greatest.

         -Erik Andersen, Oct 21, 1999

0.30
        Major changes -- lots of stuff rewritten. Many thanks to Lineo for
        paying me to make these updates. If you have any problems with busybox, 
        or notice any bugs -- please let me know so I can fix it.  These 
        changes include:

        Core Changes:
            * busybox can now invoke apps in two ways: via symlinks to the
                busybox binary, and as 'busybox [function] [arguments]...'
            * When invoked as busybox, the list of currently compiled in 
                functions is printed out (no this is not bloat -- the list
                has to be there anyway to map invocation name to function).
            * busybox no longer parses command lines for apps or displays their
                usage info.  Each app gets to handle (or not handle) this for
                itself.
            * Eliminated monadic, dyadic, descend, block_device, and 
                postprocess.  It was cumbersome to have so many programs
                cobbled together in this way.  Without them, the app is much
                more granular.
            * All shared code now lives in utility.c, and is properly
                ifdef'ed to be only included for those apps requiring it.
            * Eliminated struct FileInfo (the basis of monadic, dyadic, etc)
                so now each app has the function prototype of (da-dum):
                    extern int foo_main(int argc, char** argv);
                which speeds integration of new apps.
            * Adjusted the Makefile to make it easier to 
                {en|dis}able debugging.
            * Changed default compiler optimization to -Os 
                (optimize for smaller binaries).

        App Changes:
            * To cope with the new app function prototype and the removal of
                monadic, dyadic, etc, the following apps were re-written:
                    * cat - Works same as always.
                    * chgrp, chmod, chown - rewrite.  Combined into a single 
                        source file.  Absorbed patches from Enrique Zanardi <ezanard@debian.org>
                        that removes the dependency on libc6 libnss* libraries.
                    * cp - Can now do 'cp -a' can can copy devices,
                        pipes, symlinks, as well as recursive or non-recursive dir copies.
                    * fdflush - adjusted to remove dependancy on struct FileInfo.
                    * find - Now includes some basic regexp matching 
                        which will be the basic of a future mini-sed.
                    * ln - Same functionality.
                    * mkdir - Added -p flag to feature set.
                    * mv - rewrite.
                    * rm - Added -f flag to feature set.
                    * rmdir - Same functionality.
                    * swapon, swapoff - Combined into a single binary. No longer
                        uses /etc/swaps.  swap{on|off} -a uses /etc/fstab instead.
                    * touch - Same functionality.
            * date - adjusted with a patch from Matthew Grant <grantma@anathoth.gen.nz>
                to accomodate glibc timezone support.  I then ripped out GNU getopt.
            * mkswap -- new version merged from util-linux.  Can now make >128Meg swaps.
            * Replaced the old and star, unstar, and tarcat with the tar 
                implementation from sash.   Now tar behaves as god intended
                it to (i.e. tar -xvf <file> and tar -cf <file> <dir> work).
            * dd -- rewritten.  Can with with files, stdin, stdout.
            * Added the following new apps:
                    * loadfont -- added from debian boot floppies 
                    * chroot -- added based on a patch from Paolo Molaro <lupus@lettere.unipd.it> 
                    * grep -- I just wrote it.  Only matches simple strings
                    * ps -- I just wrote it.  Has _no_ options at all, but works.
                    * fsck_minix, mkfs_minix -- added from util-linux, but I ripped out
                        internationalization and such to make them smaller.
                    * sfdisk -- Added from util-linux (minus internationalization and such).
            * Probably some other changes that I forgot to document...

         -Erik Andersen, Oct 20, 1999

0.29    
        This version was a messy pre-alpha.  stay away or it will bite you.
         -Erik Andersen, Sep 24, 1999
        
0.28    
        mini-netcat (mnc) rewritten.
        
0.27
        Mount now supports -a, and -t auto.
        Mount now updates mtab correctly for 'ro'.
        More checks screen rows size, outputs bytes percentage.
        Printf added as module.
0.26
        Touch now creates files. -c option for no create.