changelog

手机嵌入式Linux下可用的busybox源码

	* logname used getlogin(3) which uses utmp.  Now it doesn't. 
	* whoami used getpwuid(3) which uses libc NSS.  Now it behaves. 
	* Add support for "noatime" and "nodiratime" mount flags to mount.
	* Changed 'umount -f' to mean force, and actually use umount2.
	* Changed 'umount -l' to mean "Do not free loop device".
	* Fixed basename to support stripping of suffixes.  Patch thanks
	    to xiong jianxin <[e-mail]>
	* cp -fa now works as expected for symlinks (it didn't before)
	* zcat now works (wasn't working since option parsing was broken)
	* Renamed "mnc" to the more correct "nc" (for netcat).
	* Makefile intelligence updates
	* Changed the way init parses /etc/inittab entries to avoid problems
	    with commands that contain colons in them.  Fix thanks to 
	    Pavel Roskin <[e-mail]>
	* Fixed a warning in utility.c due to char being unsigned on Linux/PPC, 
	    Fix thanks to Pavel Roskin <[e-mail]>
	* Made "killall" complain (not error and exit) about processes that it 
	    cannot find by name -- Pavel Roskin <[e-mail]> 
	* Fixed more and ps to have sensible terminal width defaults, thanks 
	    to Pavel Roskin.
	* Fixed all fatalError() calls lacking a "\n", thanks to Pavel Roskin.
	* Fixed a segfault in yes when no args were given -- Pavel Roskin.
	* Simplified freeramdisk and added argument checking -- Pavel Roskin. 
	* Fixed segfault caused by "touch -c"
	* Fixed segfault caused by "rm -f"
	* Fixed segfault caused by "ln -s -s" and similar abuses. Further fixes
	    and "--" support from Pavel Roskin.
	* Fixed segfault caused by "cp -a -a" and similar abuses.
	* Implemented "rm -- <foo>". Implementation fixed by Pavel Roskin.
	* "which" rewritten to use stat(). Fixes to improve its compatability
	    with traditional implementations -- Pavel Roskin.
	* "mount" now reports errors from nfsmount() and assumes NFS mount
	    if ':' is present in the device name - Pavel Roskin
	* Fixed exit status for killall - Pavel Roskin
	* Fixed 'swapon -a' and 'swapoff -a', which were broken.
	* Fixed 'mount -a' so it works as expected.
	* Implemented 'ls -R' (enabled by enabling BB_FEATURE_LS_RECURSIVE)
	* Implemented "ping -s", fixed error messages and argument parsing -
	    Pavel Roskin
	* Syslogd will not go to background if "-n" is given. Better help
	    and argument checking -- Pavel Roskin
	* Fixed a small bug that could cause tar to emit warning messages
	    and not extract the first file in a directory in some cases
	    of nested directories.  Thanks to Kevin Traas <[e-mail]>
	    for helping track this one down.
	* More doc updates
	* Fixed grep "Line too long" problem -- John Beppu
	* Fixed 'grep -q -i B some_file' so it works
	* math takes input from stdin if no args are given.  -- John Beppu
	* math was renamed to dc.  Although it deviates from dc's behaviour,
	    this will probably be remedied in the future.  -- John Beppu


	 -Erik Andersen, June 21, 2000


0.44
	Previously, an erronous announcement of BusyBox 0.44 was made, so to 
	avoid possible confusion, we are skipping straight to 0.45, and calling
	it good.

	 -Erik Andersen


0.43
	* Major update to the provided documentation.
	* Busybox now includes a shell!  It currently costs 7.5 k (plus an
	    additional 2.5 k if you compile in command line editing).  Handles
	    job control, has the usual set of builtins, and does everything
	    except for handling programming statements (if, while, etc...)
	* Busybox can now work perfectly when /proc is disabled, thereby 
	    saving a bunch of memory (kernel /proc support is not thin).  This
	    is done by making use of some nice kernel patches I wrote up to
	    support the features that busybox requires and that /proc usually
	    provides.  To enable this, turn on BB_FEATURE_USE_DEVPS_PATCH and
	    patch your kernel with the devps patch in the kernel-patches/
	    directory. 
	* Wrote basename, dirname, killall, and uptime.
	* tar has been completely rewritten by me.  Both tar creation and 
	    extraction are now well behaved.  Costs 7.6k with all optional
	    tar features enabled, and 5k for just tar extraction support. 
	* Added freeramdisk, which will free up all memory associated
	    with a ram disk.  Contributed by Emanuele Caratti <[e-mail]>
	    and then adjusted a bit by me.
	* Added tr from John Lombardo <[e-mail]> 
	* Added echo and test (from me).
	* Added usleep contributed by Nicolas Pitre <[e-mail]>
	* BusyBox's bss size has been majorly reduced (was 384668, is now 28740).
	* Several fixes from Pavel Roskin <[e-mail]>:
	    - When `tail' fails to open a file it now exits.
	    - When `syslogd' is given the `-n' option it should still use 
		fork() for running klogd.
	* nslookup types are now changed to u_int32_t (instead of uint32_t)
	    changed per a patch from Pascal Bellard <[e-mail]>
	* Fixed "du" so it gives the same answers as GNU "du" (busybox du used 
	    to count hard-linked files more then once).  Many thanks to 
	    Friedrich Vedder <[e-mail]> for the fix.
	* Removed /proc dependancies for init and free (while maintaining 
	    exactly the same functionality).  /proc takes up 90k of kernel 
	    space, so it is nice to avoid using it at all costs.
	* init no longer tries to mount /proc (unless there is less the 1 meg 
	    free).  Use of /proc (or not) is policy that should be set up in 
	    /etc/fstab (or in hardcoded scripts), not in init.
	* Fixed rebooting when init runs as an initrd.
	* Fixes and updates from Karl M. Hegbloom  <[e-mail]>
	    - update.c rewritten to look more like update-2.11
	    - moveed the inode hash out of du.c and into utility.c to make 
		it a common resource that can be used by other apps.
	    - cp_mv.c now checks inodes to see if a source and dest are
		the same, and prints an error (instead of endlessly looping).
	    - mv now attempts to do a rename, and will fall back to doing
		a copy only if the rename fails.
	    - Syslogd now supports multiple concurrent connections
	* Several fixes from Pavel Roskin <[e-mail]>:
	    - Fixes to sort.  Removed "-g", fixed and added "-r"
	    - Fixes to the makefile for handling "strip"
	* An initial telnet implementation was added by 
	    Randolph Chung <[e-mail]>.
	* Fixed a bug where "sed 's/foo/bar/g'" (i.e. a script w/o a "-e")
	* ps now supports BB_FEATURE_AUTOWIDTH, and can adjust its width
	    to match the terminal (defaults to width=79 when this is off).
	* ps now accepts (and ignores) all options except for "--help" (which
		as would be expected displays help).
	* Fixed mount'ing loop devices when the filesystem type was not 
	    specified.  It used to revert to non-loop after the first try.
	* all mallocs now use xmalloc (and so are OOM error safe), and
	    the common error handling saves a few bytes.  Thanks to 
	    Bob Tinsley <[e-mail]> for the patch.
	* Fix "+" parsing bug in date, from "Merle F. McClelland" <[e-mail]>.
	* Fix symlink following bug in chmod -R and friends.  
	* Now allows SYSV style 'chown foo:bar' in addition to 'chown foo.bar'
	* Fixed a bug in the busybox globbing routine such that 'find /dir -name [i]' 
	    no longer segfaults.


	-Erik Andersen


0.42

        * 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.
	* Fixed cp and mv so if the source and destination are a the
	    same directory it will print an error and continue.
	* 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


	* changed fsck_minix.c to reduce its .bss size significantly
	  -beppu -piptigger
	* 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 <[e-mail]>
	* Rewrote and simplified logger.  Added the "-t" option, and made it
	    behave itself a bit better.
	* Optional support contributed by Ben Collins <[e-mail]> 
	    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 <[e-mail]>
	* Several contributions from Friedrich Vedder <[e-mail]>
	* Added (and documented) "-n" option for head
	* Cleanup for a number of usage messages -- also 
	    contributed Friedrich Vedder <[e-mail]>
	* 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 busybox.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 <[e-mail]>, and mount was fixed by me.
	* ls formatting on eight charactor user names fixed by 
	    Randolph Chung <[e-mail]>.
	* cp could, when copying symlinks, change permissions of the
	    files pointed to by the symlinks.
	* Several fixes from Pavel Roskin <[e-mail]>:
	    - `chown' with 1 argument displayed the error incorrectly
	    - `fdflush', `length' and `printf' crashed if run without arguments
	    - `fdflush' tried to flush itself using *argv
	    - added "skip" and "seek" to dd.
	    - ls no longer messus up output when combining files and
	      directories on the command line 
	* 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.
	* Began converting error handling to use some common routines
	    in utility.c
	* syslogd now has better message handling and ignores SIGHUP.
	* install.sh had a bug preventing installation to the specified
	    target directory.  Fix from Gilbert Coville <[e-mail]>
	* You can now spefify alternative strip commands -- change 
	    also from Gilbert Coville.


	-Erik Andersen

0.41
	* New Apps: wc, hostid, logname, tty, whoami, yes -- all contributed 
	    by Edward Betts <[e-mail]>
	* 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 <[e-mail]> 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
	  <[e-mail]>
	* Several fixes from Marco Pantaleoni <[e-mail]> 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 now won't fail 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.