Commit Graph

110 Commits

Author SHA1 Message Date
Glenn L McGrath
5699b8525e Move from read_gz to the pipe()+fork() method.
open_transformer(), common code for pipe+fork.
Function pointer for read() no longer needed.
Allow inflate to be initialised with a specified buffer size to avoid
over-reading.
Reset static variables in inflate_get_next_window to fix a bug where
only the first file in a .zip would be be extracted.
2003-11-15 23:19:05 +00:00
Glenn L McGrath
54ac057c00 Fix memory leaks 2003-11-15 00:24:43 +00:00
Glenn L McGrath
e57feeb9e6 Keep trying to find a good header, if we exit it will cause .tar.gz
files to compute incorrect crc and length for gzip
2003-11-14 12:57:14 +00:00
Glenn L McGrath
7b215b99b2 Fix build error with tar -j 2003-11-14 09:22:24 +00:00
Glenn L McGrath
1a41db8eaf Remove some tar_gz stuff that get dragged in 2003-11-14 09:21:27 +00:00
Glenn L McGrath
94cf153c2b Remove debugging noise. 2003-11-14 08:30:46 +00:00
Glenn L McGrath
d09bcecda8 Read in blocks rather than one char at a time, greatly improves speed 2003-11-14 08:26:25 +00:00
Eric Andersen
28d4e16cd7 This appears to be the correct fix to make CONFIG_FEATURE_DEB_TAR_BZ2
support compile.  Glenn, you may want to verify this.
 -Erik
2003-11-07 21:31:58 +00:00
Eric Andersen
d2160aaeab fix comment 2003-11-07 21:22:09 +00:00
Glenn L McGrath
2685724e23 Fix tar -j support
Use the old fork() method of tar compression support, rather than
read_bz2....
 - (*uncompress)(int in, int out) seems like a more natural interface
for compression code.
 - it might improve performance by seperating the work into one cpu
bound and one io bound process.
 - There is extra code required to do read_[gz|bunzip] since (*uncompress)(int in,
int out) will normally be used by the standalone compression applet.

There have been problems with this method so if you see a "Short read"
error let me know.
2003-11-05 04:55:58 +00:00
Eric Andersen
8179cf2b78 Put back the tar support stubs (and warnings) for now. 2003-10-31 08:52:57 +00:00
Eric Andersen
0120be94a0 Fix stupid typo 2003-10-31 00:21:28 +00:00
Glenn L McGrath
1c834407e3 Add some error messages, use xmalloc instead of malloc 2003-10-28 23:32:12 +00:00
Glenn L McGrath
e81fc5fb30 Conditionally compile some files.
This hides a bug related to the new bunzip code in the tar and dpkg[-deb]
applets.
It will also reduce compile time a little as some unused files wont be
compiled.
2003-10-28 10:44:58 +00:00
Eric Andersen
5fa4db29f7 Another bzip2 update and speedup from Manuel Novoa III, with some
additional changes (primarily lots of comments) from Rob Landley.
2003-10-23 06:52:01 +00:00
Eric Andersen
1acfb72e71 Manuel Novoa III writes:
Hello Rob,

Here's a patch to your bunzip-3.c file.  Nice work btw.

One minor bug fix... checking for error return when read()ing.
Some size/performance optimizations as well.  One instance of
memset() seems unnecssary.  You might want to take a look.

Anyway, on my machine, decompressing linux-2.6.0-test7.tar.bz2
to /dev/null gave the following times:

        bunzip-3.c    bzcat (system)   bunzip-3.c (patched)
real    0m24.420s     0m22.725s        0m20.701s
user    0m23.930s     0m22.170s        0m20.180s
sys     0m0.070s      0m0.080s         0m0.140s

Size of the patched version is comparable (slightly larger or
smaller depending on compiler flags).

Manuel
2003-10-18 01:59:46 +00:00
Eric Andersen
0d6d88a205 Rob Landley's new micro-bunzip version 3. Rob writes:
The API for using partial writes, as described in my last message, sucked.

So here's a patch against my last patch that changes things so that
write_bunzip_data calls read_bunzip_data itself behind the scenes whenever
necessary.  So usage is now just start_bunzip(), write_bunzip_data() until it
returns a negative number, and then the cleanup at the end of
uncompressStream.

It adds 32 bytes to the executable, but it should allow the caller (tar) to be
simplified enough to compensate.  Total -Os stripped exe size now 6856 bytes.

Rob

P.S.  I attached the whole C file so you don't have to keep incremental
patches straight if you don't want to. :)

P.S.  In the version I'm banging on now, I've simplified the license to just
LGPL.  I read the OSL a bit more closely and the patent termination clause
would have bit IBM in their counter-suit of SCO if the code in question had
been OSL instead of GPL, and I've decided I just don't want to beta-test
legal code right now.
2003-10-18 01:58:35 +00:00
Glenn L McGrath
beb3bbd991 Fix handling of hardlinks when OLDGNU and GNU extensions arent enabled. 2003-09-12 06:49:09 +00:00
Glenn L McGrath
ef91bf67ed Use the typeflag to identify if its a hardlink on OLD and GNU posix
modes, fixes a bug extracting hardlinks to symlinks.
2003-09-12 06:31:28 +00:00
Eric Andersen
2fdba24620 Marc A. Lehmann writes:
The tar -x command in busybox does not restore the file mode correctly.

The reason is most probably this code in
archival/libunarachive/data_extract_all.c:

       chmod(file_header->name, file_header->mode);
       chown(file_header->name, file_header->uid, file_header->gid);

chown clears the set*id bits (on current versions of linux :). Flipping
the order around fixes the problem.

(tested with 1.00pre3 from cvs).
2003-09-11 08:32:40 +00:00
Glenn L McGrath
87af49f26b If a tar entry is a regualr file ending in a '/' then its really a
directory.
From http://www.gnu.org/manual/tar/html_node/tar_123.html
REGTYPE
AREGTYPE
    These flags represent a regular file. In order to be compatible with
older versions of tar, a typeflag value of AREGTYPE should be silently
recognized as a regular file. New archives should be created using
REGTYPE. Also, for backward compatibility, tar treats a regular file
whose name ends with a slash as a directory.
2003-09-09 17:41:03 +00:00
Glenn L McGrath
4cee66d5a8 Dont unlink when testing !
Always preserve creation date
Disable the -p option its for modification date
Remove some cpio header debugging noise
Syncronise file listing behaviour with upstream.
2003-08-28 19:12:23 +00:00
Glenn L McGrath
3d5828fb6d Change hardlink handling for tar to work the same way as cpio 2003-08-14 02:55:15 +00:00
Glenn L McGrath
91e464632b Fix bug when handling debian packages.
If we read the contents of compressed files within the ar archive,
e.g. control.tar.gz, then file position gets all out of whack, so
it has to be reset before reading thenext header.
2003-07-31 01:53:50 +00:00
Eric Andersen
1b0075d243 Fixup problem unconditionally converting all hard links to symlinks. 2003-07-16 06:29:51 +00:00
Eric Andersen
cb81e6484d Update a bunch of docs. Run a script to update my email addr. 2003-07-14 21:21:08 +00:00
Eric Andersen
e3393513c5 Be certain to not abort prematurely when reading stuff from pipes. 2003-07-05 23:10:27 +00:00
Glenn L McGrath
b838420fd5 Handle hard links by converting them to symlinks 2003-06-12 13:47:16 +00:00
Glenn L McGrath
afc01cd485 unlink a previous file before its extracted 2003-04-21 11:03:29 +00:00
Manuel Novoa III
cad5364599 Major coreutils update. 2003-03-19 09:13:01 +00:00
Glenn L McGrath
826b48b624 Woops, my gunzip fix broke unzip, these cant be static 2003-02-09 12:00:17 +00:00
Glenn L McGrath
1d21fb3c23 Moved to libunarchive/unzip.c 2003-02-09 04:49:17 +00:00
Glenn L McGrath
cc616928d5 Fix endian probelm on PPC, i had different types for an extern variable. 2003-02-09 04:46:34 +00:00
Glenn L McGrath
21110a0aa2 Fix long standing bug with old gnu tar files, add a check so tar will
complain "unknown file type" if it tries to extract an oldgnu tar file
and TAR_FEATURE_OLDGNU_COMPATABILITY sint defined.
Print a warning if unisupported gnu extensions are encountered.
2003-01-28 01:45:48 +00:00
Eric Andersen
f4b273cbb4 A cleaner cleanup that avoids passing an off_t to scanf 2002-12-11 21:45:08 +00:00
Eric Andersen
9701411d21 squash a warning 2002-12-11 21:34:04 +00:00
Glenn L McGrath
b72a735a32 rpm applet by Laurence Anderson 2002-12-10 00:17:22 +00:00
Glenn L McGrath
66125c8065 Move add_to_list from libunarchive to libbb so it can be of more general use (eg ifupdown). Changed the name to llist_add_to as i plan on adding more llist_ functions as needed (e.g. llist_free). 2002-12-08 00:54:33 +00:00
Glenn L McGrath
6f9b45b9ef Unlink before mkdir, mknod, symlink to overwrite 2002-12-04 22:26:30 +00:00
Glenn L McGrath
f3faf41334 fix warning 2002-12-01 21:52:40 +00:00
Glenn L McGrath
fedbfe4059 Style 2002-11-28 09:09:47 +00:00
Glenn L McGrath
eda4f53f2e Add an input buffer (currently 32kB) to speed things up heaps, it still requires 25% longer to decompress as compared to upstream. 2002-11-24 06:01:20 +00:00
Glenn L McGrath
b7a76df4d1 Fix long filename support 2002-11-23 10:44:47 +00:00
Glenn L McGrath
83bf47c02f Speed and memory usage improvements from Laurence Adnerson 2002-11-20 22:00:31 +00:00
Glenn L McGrath
0126fda5bb read_gz patch 3 from Laurence Anderson 2002-11-20 06:46:46 +00:00
Glenn L McGrath
a0d395eac9 Use read_gz, remove fork() woohoo! 2002-11-19 08:22:03 +00:00
Glenn L McGrath
fd73b8c2ce Patch from Laurence Anderson to provide a read_gz function, doesnt require fork(), pipe(), consistent with read_bz2 and more flexible. 2002-11-17 21:33:30 +00:00
Glenn L McGrath
02fcd2d2df Allow short reads as we are looping anyway. 2002-11-15 21:58:30 +00:00
Glenn L McGrath
e356883ffb Minor cleanups 2002-11-13 00:24:20 +00:00
Glenn L McGrath
034c371bb2 Reduce block size to 512 to prevent short read's when reading from a pipe 2002-11-12 23:34:15 +00:00