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* decompressors: check input size in decompress_inflate.cLasse Collin2011-01-131-4/+13
| | | | | | | | | | | | | Check for end of the input buffer when skipping over the filename field in the .gz file header. Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alain Knaff <alain@knaff.lu> Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Decompressors: include <linux/slab.h> in <linux/decompress/mm.h>Lasse Collin2011-01-131-1/+0
| | | | | | | | | | | | | Currently users of mm.h need to include <linux/slab.h> to use the macros malloc() and free() provided by mm.h. This fixes it. Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alain Knaff <alain@knaff.lu> Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Decompressors: get rid of set_error_fn() macroLasse Collin2011-01-131-2/+1
| | | | | | | | | | | | | | | | | | 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 <lasse.collin@tukaani.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alain Knaff <alain@knaff.lu> Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Decompressors: add missing INIT (i.e. __init)Lasse Collin2011-01-131-1/+1
| | | | | | | | | | Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alain Knaff <alain@knaff.lu> Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lzma/gzip: fix potential oops when input data is truncatedPhillip Lougher2009-09-241-0/+8
| | | | | | | | | | | If the lzma/gzip decompressors are called with insufficient input data (len > 0 & fill = NULL), they will attempt to call the fill function to obtain more data, leading to a kernel oops. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib/decompress_*: only include <linux/slab.h> if STATIC is not definedAlbin Tonnerre2009-08-071-1/+1
| | | | | | | | | | | | | | | | | | | | | 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 <albin.tonnerre@free-electrons.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bzip2/lzma/gzip: fix comments describing decompressor APIPhillip Lougher2009-08-071-4/+4
| | | | | | | | | | | Fix and improve comments in decompress/generic.h that describe the decompressor API. Also remove an unused definition, and rename INBUF_LEN in lib/decompress_inflate.c to conform to bzip2/lzma naming. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.cPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix build lib/decompress_inflate.c depends on slab.h without including it: CC lib/decompress_inflate.o lib/decompress_inflate.c: In function ‘gunzip’: lib/decompress_inflate.c:45: error: implicit declaration of function ‘kmalloc’ lib/decompress_inflate.c:45: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:57: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:65: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:71: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:154: error: implicit declaration of function ‘kfree’ make[1]: *** [lib/decompress_inflate.o] Error 1 make: *** [lib/] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237886030.25315.47.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* bzip2/lzma: fix decompress_inflate.c vs multi-block-with-embedded-filenameAlain Knaff2009-01-081-1/+1
| | | | | | | | | | Impact: Bug fix Fix gunzip uncompression, so that it also works with files with embedded filenames that are larger than one block. Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* bzip2/lzma: fix constant in decompress_inflateH. Peter Anvin2009-01-081-1/+1
| | | | | | | | | | Impact: Cleanup Fix constant 0x8100 /* 32K */; according to Alain the value 0x8100 was left over test code to test misalignment, the correct value is indeed 0x8000 == 32K. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* bzip2/lzma: library support for gzip, bzip2 and lzma decompressionAlain Knaff2009-01-041-0/+167
Impact: Replaces inflate.c with a wrapper around zlib_inflate; new library code This is the first part of the bzip2/lzma patch The bzip patch is based on an idea by Christian Ludwig, includes support for compressing the kernel with bzip2 or lzma rather than gzip. Both compressors give smaller sizes than gzip. Lzma's decompresses faster than bzip2. It also supports ramdisks and initramfs' compressed using these two compressors. The functionality has been successfully used for a couple of years by the udpcast project This version applies to "tip" kernel 2.6.28 This part contains: - changed inflate.c to accomodate rest of patch - implementation of bzip2 compression (not used at this stage yet) - implementation of lzma compression (not used at this stage yet) - Makefile routines to support bzip2 and lzma kernel compression Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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