linux-toradex.git/lib/decompress_bunzip2.c, branch v3.18.2

initramfs: support initramfs that is bigger than 2GiB

2014-08-08T22:57:26+00:00

Now with 64bit bzImage and kexec tools, we support ramdisk that size is
bigger than 2g, as we could put it above 4G.

Found compressed initramfs image could not be decompressed properly.  It
turns out that image length is int during decompress detection, and it
will become < 0 when length is more than 2G.  Furthermore, during
decompressing len as int is used for inbuf count, that has problem too.

Change len to long, that should be ok as on 32 bit platform long is
32bits.

Tested with following compressed initramfs image as root with kexec.
	gzip, bzip2, xz, lzma, lzop, lz4.
run time for populate_rootfs():
   size        name       Nehalem-EX  Westmere-EX  Ivybridge-EX
 9034400256 root_img     :   26s           24s          30s
 3561095057 root_img.lz4 :   28s           27s          27s
 3459554629 root_img.lzo :   29s           29s          28s
 3219399480 root_img.gz  :   64s           62s          49s
 2251594592 root_img.xz  :  262s          260s         183s
 2226366598 root_img.lzma:  386s          376s         277s
 2901482513 root_img.bz2 :  635s          599s

Signed-off-by: Yinghai Lu 
Cc: "H. Peter Anvin" 
Cc: Ingo Molnar 
Cc: Rashika Kheria 
Cc: Josh Triplett 
Cc: Kyungsik Lee 
Cc: P J P 
Cc: Al Viro 
Cc: Tetsuo Handa 
Cc: "Daniel M. Weeks" 
Cc: Alexandre Courbot 
Cc: Jan Beulich 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

decompress_bunzip2: remove invalid vi modeline

2011-12-06T09:00:05+00:00

Signed-off-by: Paul Bolle 
Signed-off-by: Jiri Kosina

treewide: Fix comment and string typo 'bufer'

2011-12-06T08:53:40+00:00

Signed-off-by: Paul Bolle 
Signed-off-by: Jiri Kosina

Decompressors: include in

2011-01-13T16:03:23+00:00

Currently users of mm.h need to include  to use the macros
malloc() and free() provided by mm.h.  This fixes it.

Signed-off-by: Lasse Collin 
Cc: "H. Peter Anvin" 
Cc: Alain Knaff 
Cc: Albin Tonnerre 
Cc: Phillip Lougher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Decompressors: get rid of set_error_fn() macro

2011-01-13T16:03:23+00:00

set_error_fn() has become a useless complication after c1e7c3ae59
("bzip2/lzma/gzip: pre-boot malloc doesn't return NULL on failure") fixed
the use of error() in malloc().  Only decompress_unlzma.c had some use for
it and that was easy to change too.

This also gets rid of the static function pointer "error", which
should have been marked as __initdata.

Signed-off-by: Lasse Collin 
Cc: "H. Peter Anvin" 
Cc: Alain Knaff 
Cc: Albin Tonnerre 
Cc: Phillip Lougher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/decompress_bunzip2.c: fix checkstack warning

2010-08-11T15:59:23+00:00

Fix checkstack error:

lib/decompress_bunzip2.c: In function `get_next_block':
lib/decompress_bunzip2.c:511: warning: the frame size of 1932 bytes is larger than 1024 bytes

byteCount, symToByte, and mtfSymbol cannot be declared static or allocated
dynamically so place them in the bunzip_data struct.

Signed-off-by: Prarit Bhargava 
Cc: Phillip Lougher 
Cc: "H. Peter Anvin" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

bzip2: Add missing checks for malloc returning NULL

2009-12-15T22:04:19+00:00

Signed-off-by: Phillip Lougher 
LKML-Reference: <4b26b1ef.ln20bM9Mn4gzB21L%phillip@lougher.demon.co.uk>
Signed-off-by: H. Peter Anvin

tree-wide: fix assorted typos all over the place

2009-12-04T14:39:55+00:00

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa 
Signed-off-by: Jiri Kosina

lib/decompress_*: only include if STATIC is not defined

2009-08-07T17:39:56+00:00

These includes were added by 079effb6933f34b9b1b67b08bd4fd7fb672d16ef
("kmemtrace, kbuild: fix slab.h dependency problem in
lib/decompress_inflate.c") to fix the build when using kmemtrace.  However
this is not necessary when used to create a compressed kernel, and
actually creates issues (brings a lot of things unavailable in the
decompression environment), so don't include it if STATIC is defined.

Signed-off-by: Albin Tonnerre 
Cc: Sam Ravnborg 
Cc: Russell King 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: "H. Peter Anvin" 
Cc: Pekka Enberg 
Cc: Eduard - Gabriel Munteanu 
Cc: Phillip Lougher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

bzip2/lzma: remove nasty uncompressed size hack in pre-boot environment

2009-08-07T17:39:56+00:00

decompress_bunzip2 and decompress_unlzma have a nasty hack that subtracts
4 from the input length if being called in the pre-boot environment.

This is a nasty hack because it relies on the fact that flush = NULL only
when called from the pre-boot environment (i.e.
arch/x86/boot/compressed/misc.c).  initramfs.c/do_mounts_rd.c pass in a
flush buffer (flush != NULL).

This hack prevents the decompressors from being used with flush = NULL by
other callers unless knowledge of the hack is propagated to them.

This patch removes the hack by making decompress (called only from the
pre-boot environment) a wrapper function that subtracts 4 from the input
length before calling the decompressor.

Signed-off-by: Phillip Lougher 
Cc: "H. Peter Anvin" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds