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Checking in to reduce the diff between my tree and svn...
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Cherry-picked from Devin Bayer's big MacOS X patch.
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yet more incorrect types
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ATTRIBUTE_UNUSED. Whitespace
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- use shorter boilerplate while at it.
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- IMA compilation option (aka IPO, IPA,..)
Please holler if i broke something..
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be using WEXITSTATUS(), but until I can figure out why the heck that would
want to do (*(int *) &(status)) on the value, I'm happy just fixing the bug we
actually see.
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0000474: vi crashes often
problem was that the buffer used for "." command ("last_modifying_cmd")
wasn't being maintined correctly -- the recording code was walking back
over the front of that buffer when a repeatable insert command
included backspacing (e.g. "i\b\b\bfoo"). the fix is to simply
record the backspaces along with the rest of the command.
also, cleaned up start_new_cmd_q() slightly.
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- use bb_xgetlarg for the patch_level to catch invalid arguments.
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Fixes Rob's issue using busybox awk for building gcc-4_0 optionlist (http://busybox.net/lists/busybox/2005-October/016659.html)
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being unsigned.
- minor correction: use stdin only when no file was given via -i.
- use shorter boilerplate.
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needed elsewhere as well now.
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code expects the size of the info variables to be 32bits and sizeof(long) on 64bit hosts is not 32bits
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i was building w/ debug on before, which suppresses optimization.
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correct screen, and bug 215 reports trouble with the status line
on small screens.
with this change a) the status line should always be refreshed
properly, b) the status line is a little shorter than it used to
be ("I" instead of "--INSERT--"), c) the status line will be
truncated if it doesn't fit on the screen, and d) if the screen
is too narrow for an error or transient status message (from
psb() or psbs()), then that message will be followed by a "Hit
Return" prompt. (it wasn't until i did this last bit that the
size grew. with this, these changes add about 150 bytes.)
- pgf
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from libbb.h
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char, to be used in get_input_line()
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0000118: vi join command does not mark file as modified for certain lines.
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all actually displayed in the status line as expected
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Charlie Brady wrote:
> Here's another awk parsing problem - unary post increment - pre is fine:
>
>bash-2.05a$ echo 2,3 | gawk -F , '{ $2++ }'
>bash-2.05a$ echo 2,3 | /tmp/busybox/busybox awk -F , '{ $2++ }'
>awk: cmd. line:1: Unexpected token
>
Here's a fix for this. There is another problem with constructions like
"print (A+B) ++C", I don't
know whether somebody uses such constructions (fixing both these
problems would require very
serious change in awk code).
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This patch implements the 'T' command in sed. This is a GNU extension,
but one of the udev hotplug scripts uses it, so I need it in busybox
anyway.
Includes a test; 'svn add testsuite/sed/sed-branch-conditional-inverted'
after applying.
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While the permissions on the temp file are correct to prevent it from being
maliciously mangled by passing strangers, (created with 600, opened O_EXCL,
etc), the permissions on the _directory_ might not be, and we re-open the
file to convert the filehandle to a FILE * (and automatically get an error
message and exit if the directory's read-only or out of space or some such).
This opens a potential race condition if somebody's using dnotify on the
directory, deletes/renames the tempfile, and drops a symlink or something
there. Somebody running sed -i as root in a world writeable directory could
do damage.
I dug up notes on an earlier discussion where we looked at the security
implications of this (unfortunately on the #uclibc channel rather than email;
I don't have a transcript, just notes-to-self) which pointed out that if the
permissions on the directory allow other people's files to be deleted/renamed
then the original file is vulnerable to sabotage anyway. However, there are
two cases that discussion apparently didn't take into account:
1) Using another user's permissions to damage files in other directories you
can't access (standard symlink attack).
2) Reading data another user couldn't otherwise access by having the new file
belong to that other user.
This patch uses fdopen to convert the filehandle into a FILE *, rather than
reopening the file.
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which were otherwise cluttering the global namespace.
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On machines with only ANSI compliant compilers, not explitily delcaring
an empty parameter list 'void' causes failure.
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and with multiple files SuSv3 says it should only trigger at the end of the
LAST file.
The trivial fix I tried first broke if the last file is empty. Fixing this
properly required restructuring things to create a file list (actually a
FILE * list), and then processing it all in one go. (There's probably a
smaller way to do this, merging with append_list perhaps. But let's get
the behavior correct first.)
Note that editing files in place (-i) needs the _old_ behavior, with $
triggering at the end of each file.
Here's a test of all the things this patch fixed. gnu and busybox seds produce
the same results with this patch, and different without it.
echo -n -e "1one\n1two\n1three" > ../test1
echo -n > ../test2
echo -e "3one\n3two\n3three" > ../test3
sed -n "$ p" ../test1 ../test2 ../test3
sed -n "$ p" ../test1 ../test2
sed -i -n "$ p" ../test1 ../test2 ../test3
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to not put a newline at the end (which was backwards, it should have been
hardwired _to_ put a newline at the end, whether or not the input line
ended with a newline). Test case for that:
echo | sed -e '$ctest'
And then this would segfault:
echo | sed -e 'g'
Because pattern_space got freed but the dead pointer was only overwritten
in an if statement that didn't trigger if the hold space was empty. Oops.
While debugging it, I found out that the hold space is persistent between
multiple input files, so I promoted it to a global and added it to the
memory cleanup. The relevant test case (to compare with That Other Sed) is:
echo -n woo > woo
sed -e h -e g woo
echo "fish" | sed -e '/woo/h' -e "izap" -e 's/woo/thingy/' -e '/fish/g' woo -
And somebody gratuitously stuck in a c99 int8_t type for something that's just
a flag, so I grouped the darn ints.
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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
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-Erik
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with no value exist, i.e.
$ export BOB=''
% ./busybox awk
Segmentation fault
This patch teaches awk to not blow chunks on empty env variables.
-Erik
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