It is impossible to formulate sane ABI based on
size of ulong because it can be 32-bit or 64-bit.
Basically it means that you cannot portably use
more that 32 option chars in one call anyway...
Make it explicit.
option - it was going to return a special flag back to caller and
expecting caller to call it again with special parameter! Also
caller was charged with calling mount() syscall...
mount: mtab support was non-functional. Enabling it revealed serious bug
which is not fixed yet.
except that we still have to work when there is no mtab.
Oh, and while we're at it, take advantage of the fact that modern processors
avoid branches via conditional assignment where possible. ("x = a ? b : c;"
turns into "x = c; if (a) x = b;" because that way there's no branch to
potentially mispredict and thus never a bubble in the pipeline. The if(a)
turns into an assembly test followed by a conditional assignment (rather
than a conditional jump).) So since the compiler is going to do that _anyway_,
we might as well take advantage of it to produce a slightly smaller binary.
So there.
few new (unfinished) config options, which I intend to make hidden (but
enabled) when CONFIG_NITPICK is disabled. Getting the .config infrastructure
to do that is non-obvious, it seems...
were using "1" as one of the arguments anyway, and as for the rest a multiply
and a push isn't noticeably bigger than pushing two arguments on the stack.
a failed mount. And while I'm at it, legacy mdev removal was only being done
in the _failure_ case? That can't be right. Plus minor header cleanups
and an option parsing tweak.
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only
had one user), clean up lots of #includes... General cleanup pass. What I've
been doing for the last couple days.
And it conflicts! I've removed httpd.c from this checkin due to somebody else
touching that file. It builds for me. I have to catch a bus. (Now you know
why I'm looking forward to Mercurial.)
1) the c argument shouldn't have had a : after that, dunno how that got there.
2) the xgetlarg for level was using size
3) because xgetlarg's error message _SUCKS_ (it does a show_usage() rather than giving any specific info about the range that was violated) I dropped the range down to 2 bytes. (Which works fine, I dunno why we were nit-picking about that...)
Both Jason Schoon and Giuseppe Ciotta deserve credit for this, I used elements
of both. It's been upgraded so that you can specify that a given command
should run at create, at delete, or at both using different special characters
(@, $, and * respectively). It uses the system() method of running command
lines which means you can use environment variables on the command line (it
sets $MDEV to the name of the current device being created/deleted, which is
useful if you matched it via regex), and the documentation warns that you need
a /bin/sh to make that work, so you probably want to pick a default shell.
fallout due to the #include <sys/mount.h>. Removed that #include from various
applets and fixed up those that were unhappy when that #include was made
because they'd block copied stuff out of it. (Sigh.)
Shaun Jackman writes:
A bug introduced in svn 11946 broke rdate. It no longer sets the
current system time when no options are specified. The options have
the opposite sense from what one might think, and, oddly enough, -ps
is intentionally a no-op.
Quoth rdate(8) from the BSD System Manager's Manual:
-p Do not set, just print the remote time
-s Do not print the time.
files still using them. I didn't remove them from e2fsck.c to avoid stomping
pending cleanup patches from Garrett, and I didn't bother to remove them from
fdisk.c because that entire file needs to be rewritten from scratch.
Adds "Enable getopt long" under "General options", default y.
Send patches to fix getopt_ulflags and run_parts.c if you turn this off..
See http://busybox.net/lists/busybox/2006-May/021828.html for a start to run-parts
* Do not initialize globals to 0, it is done automatically
* unsigned short -> uint16_t, unsigned int -> uint32_t
where appropriate (did it ever work on Alphas?)
* triple sync() is silly - removed
* check_zone_nr uses check_zone_nr2 now
* remove trailing periods from messages, uppercase first letter
about comparing signed and unsigned and make stuff static.
text data bss dec hex filename
6944 0 0 6944 1b20 util-linux/ipcs.o.oorig
6509 0 0 6509 196d util-linux/ipcs.o
TODO: bb_getopt_ulflags, and further simplifications
command line, initialize singlemount's rc to an error value so it doesn't
think it succeeded when it didn't, use absolute path when associating a
loop device (and the previous FEATURE_CLEAN_UP logic related to that was
freeing the wrong thing), move reading of /proc/filesystems to where we can
re-read it (when it's empty) for every entry on a "mount -a" so that when
/proc is mounted as the first entry, the later filesystems can autodetect
filesystem type.
the new infrastructure is reentrant so in theory it's capable of handling
mount -a sanely. It can also re-use existing flags with remount, handle
-t auto, mount -a -t, and several smaller bugfixes.
if we don't zero it after closing it we re-close a filehandle that isn't
open, and since this is a file _pointer_ it segfaults on a double free.
Yeah, subtle bug. I need to break this out into separate functions if I can
figure out how to avoid making the code larger while doing so. Part of
the general -a and -o remount work I need to do, but that's after 1.1.0...
Not buying it, eh?
I know I said new features before 1.1, but, well... (I was weak!)
The config file and hotplug modes aren't implemented yet. Might take a stab at
those tomorrow. (I _should_ go back to focusing on the bug triage list.)
messages, C) can show the current association (if any) when called
with only one argument. Update the documentation a lot too.
Remind me to add a test suite for this thing. I think I've figured out
how to handle root-only testsuites...
fixes bug #113 and satisfies a personal need at the same time.
output compares identically to util-linux version. (with
exception of whitespace differences on last lines of output with
non-uniform length, which are neither fixed nor worsened by this
change.)
- new bb_getopt_ulflags features: check max and min args, convert first argv to options special for ar and tar applets
- use bb_default_error_retval for env applet
- more long opt compatibility, can set flag for long opt struct now
- more logic: check opt-depend requires and global requires, special for 'id' and 'start-stop-daemon' applets.
./busybox getopt -n one -n two woot
./busybox getopt -o one -o two woot
This entire applet is still an enormous pile of garbage, which I can't clean
up because I really have no idea what it's for. (Both "man getopt" and trying
it out on the command line a bit fail to enlighten me. Reading the code, the
fact half of it seems to be special cases for bash vs tcsh does not fill me
with confidence.)
added to the list, and my assumption that nfsmount() actually called
mount() was incorrect (and I coded it wrong anyway; I hate having to touch
codepaths I can't personally test).
can never be made because useMtab is initialized to 0, and all the other
assignments of that variable assign 0 to it. Any compiler that can perform
simple constant propogation on local variables will optimize away if statements
testing against that variable, thus the call to erase_mtab() will never be
made.
When compiling for arm using gcc 3.3.3 with FEATURE_MTAB_SUPPORT disabled,
the linker complains that it can't find erase_mtab(). The arm optimizer isn't
exactly the brightest member of the family, and apparently needs to be hit over
the head with a hammer to get its' attention...
things down a bit, fixed a number of funky corner cases, added support for
several new features (things like mount --move, mount --bind, lazy unounts,
automatic detection of loop mounts, and so on). Probably broke several
other things, but it's fixable. (Bang on it, tell me what doesn't work for
you...)
Note: you no longer need to say "-o loop". It does that for you when
necessary.
Still need to add "user mount" support, which involves making mount suid. Not
too hard to do under the new infrastructure, just haven't done it yet...
The previous code had the following notes, that belong in the version
control comments:
- * 3/21/1999 Charles P. Wright <cpwright@cpwright.com>
- * searches through fstab when -a is passed
- * will try mounting stuff with all fses when passed -t auto
- *
- * 1999-04-17 Dave Cinege...Rewrote -t auto. Fixed ro mtab.
- *
- * 1999-10-07 Erik Andersen <andersen@codepoet.org>.
- * Rewrite of a lot of code. Removed mtab usage (I plan on
- * putting it back as a compile-time option some time),
- * major adjustments to option parsing, and some serious
- * dieting all around.
- *
- * 1999-11-06 mtab support is back - andersee
- *
- * 2000-01-12 Ben Collins <bcollins@debian.org>, Borrowed utils-linux's
- * mount to add loop support.
- *
- * 2000-04-30 Dave Cinege <dcinege@psychosis.com>
- * Rewrote fstab while loop and lower mount section. Can now do
- * single mounts from fstab. Can override fstab options for single
- * mount. Common mount_one call for single mounts and 'all'. Fixed
- * mtab updating and stale entries. Removed 'remount' default.
- *
Hi!
I've created a patch to busybox' build system to allow building it in
separate tree in a manner similar to kbuild from kernel version 2.6.
That is, one runs command like
'make O=/build/some/where/for/specific/target/and/options'
and everything is built in this exact directory, provided that it exists.
I understand that applyingc such invasive changes during 'release
candidates' stage of development is at best unwise. So, i'm currently
asking for comments about this patch, starting from whether such thing
is needed at all to whether it coded properly.
'make check' should work now, and one make creates Makefile in build
directory, so one can run 'make' in build directory after that.
One possible caveat is that if we build in some directory other than
source one, the source directory should be 'distclean'ed first.
egor
Hi to all,
This patch is useful for:
1) remove an unused var from extern char *find_real_root_device_name(const char* name)
changing it to extern char *find_real_root_device_name(void).
2) fixes include/libbb.h, coreutils/df.c, util-linux/mount.c and util-linux/umount.c accordingly.
3) fixes a bug, really a false positive, in find_real_root_device_name() that happens if
in the /dev directory exists a link named root (/dev/root) that should be skipped but
is not. This affects applets like df that display wrong results
Hi,
With the following /etc/fstab (any two or more lines of nfs), mount -a
-t nfs causes a segmentation faults.
server:/exports/aaa /mnt/aaa nfs defaults 0 0
server:/exprots/bbb /mnt/bbb nfs defaults 0 0
In util-linux/nfsmount.c, it overwrites malloc'ed pointer *mount_opts
with a static pointer. With this patch it does proper memory realloc
and data copy instead.
Yes, I know busybox is in feature freeze. If this two-liner is too much
that's fine, but it's handy.
This patch allows busybox mount to support "-o move" just like it
supports "-o bind", which is the equivalent of util-linux "mount --move".
Usage is:
mount -o move /mnt/point/1 /mnt/point/2
where /mnt/point/1 is an already mounted filesystem; it will be moved to
/mnt/point/2.
This is a bulk spelling fix patch against busybox-1.00-pre10.
If anyone gets a corrupted copy (and cares), let me know and
I will make alternate arrangements.
Erik - please apply.
Authors - please check that I didn't corrupt any meaning.
Package importers - see if any of these changes should be
passed to the upstream authors.
I glossed over lots of sloppy capitalizations, missing apostrophes,
mixed American/British spellings, and German-style compound words.
What is "pretect redefined for test" in cmdedit.c?
Good luck on the 1.00 release!
- Larry
Ok. Last patch reduce 73 bytes for compensate (and over) your changes ;-)
Comments:
Added cin_fileno variable, auto setted to 0 from BSS and have "eq" stdin
descriptor if isatty(stout)==0, removed global variable FILE* cin.
Removed default setting to terminal_width/terminal_height, this used
only from main() and setted after call get_terminal_width_height()
always correct.
Variable please_display_more_prompt changed to bits logic, have size
reducing.
--w
vodz
I've noticed a bug in the "autowidth" feature more, and is probably in
others. The call to the function get_terminal_width_height() passes
in a file descriptor but that file descriptor is never used, instead
the ioctl() is called with 0. In more_main() the call to
get_terminal_width_height() passes 0 as the file descriptor instead of
fileno(cin). This isn't a problem when you more a file (e.g. "more
/etc/passwd") but when you pipe a file to it (e.g. "cat /etc/passwd |
more") the size of the terminal cannot be determined because file
descriptor 0 is not a terminal. The fix is simple, I've attached a
patch for more.c and get_terminal_width_height.c.
BAPper
bb_lookup_port now takes 3 parameters but rdate has not been modified
accordingly and fails to compile in the current CVS version.
The modification below fixes the problem.
Now, RFC868 allows both UDP and TCP implementations of the time protocol
so this may not work if someone defines a udp time service other than 37
but who would do that?
function as there is no gracefull way of handling failures.
Rename bb_getport to bb_lookup_port, allow a default port to be
specified so it always returns a correct value.
Modify ftpgetput/rdate/wget to use the new interface.
wget/rdate now use etc/services with a falback default value.
* The "rdate.patch" file makes rdate to NOT settimeofday if the date to be
set equals current date. This prevents the system from experiencing nasty time
discontinuities caused by sub-second changes, with a protocol that has only
over second resolution. Depending on your taste, the "fprintf(stderr..." may be
removed.
it will properly fall back to /proc/mounts when /etc/filesystems
is missing, allowing mount to guess the correct fs type when a
fs type is not explicitly specified.
-Erik
in order to fix the problems with round robin DNS reported
by Andrew Flegg:
http://busybox.net/lists/busybox/2003-October/009579.html
This removes the ipv6 specific xconnect dns lookups. I do
not see why that would need to be special cased for ipv6 as
was done, but that will just have to be tested.
So IPV6 people -- please test this change!
-Erik
the busybox menuconfig triggered my "inacceptable number of spelling mistakes"
upper level, so I decided to make a patch ;-)
I also improved some wording to describe some things in a better way.
Many thanks for an incredible piece of software!
Andreas Mohr, random OSS developer
I wrote:
>>I think, fdisk have special ext2lseek special for:
>>disk can have size > 4Gb, but all any partitions have < 4Gb and lseek64
>>not require.
>>May be best create new configure option for set DOLFS for fdisk applet
>>if global DOLFS unset?
>
Erik Andersen wrote:
>Agreed. Using an extra configure option when ! DOLFS
>would be a good idea.
Ok. Patch attached.
When using "losetup" the device is always setup as Read-Only.
(I have only tested with the -o flag, but looking at the code the
problem seems general)
The problem is the "opt" variable in "losetup.c" that is reused in
the "set_loop()" call. Clear it before the call and everything is OK;
opt = 0; /* <-------- added line */
if (delete)
return del_loop (argv[optind]) ? EXIT_SUCCESS : EXIT_FAILURE;
else
return set_loop (argv[optind], argv[optind + 1], offset, &opt)
? EXIT_FAILURE : EXIT_SUCCESS;
}
Best Regards,
Lars Ekman
If BusyBox was compiled with -DCONFIG_FEATURE_CLEAN_UP dmesg command
segfaults if invoked with the "-n" option. (Due to a free() of an
uninitialized pointer).
"rootfs" entry as well as the traditional "/dev/root" entry. This caused
applets such as mount and df to display two root filesystem entries....
This teaches the relevant utilities to ignore the "rootfs" entry.
-Erik
during 'mount -a'. If the user wants to do that, hey, its their
lifs. If the nfs server is down and they don't want to wait for
nfs to time out, that is their problem.
-Erik
modified Kbuild system I put into uClibc. With this, there should be no more
need to modify Rules.mak since I've moved all the interesting options into the
config system. I think I've got everything updated, but you never know, I may
have made some mistakes, so watch closely.
-Erik
