From f68ab43de67f59925542efb6bcec30f4a84fe695 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 4 Dec 2009 05:35:15 -0500 Subject: [PATCH] lzma: ignore unset filesizes The Linux kernel build system changed how it compresses things with LZMA such that the header no longer contains the filesize (it is instead set to all F's). So if we get a LZMA image that has -1 for the 64bit field, let's just assume that the decompressed size is unknown and continue on. Signed-off-by: Mike Frysinger --- lib_generic/lzma/LzmaTools.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/lib_generic/lzma/LzmaTools.c b/lib_generic/lzma/LzmaTools.c index 408b577..8860bfb 100644 --- a/lib_generic/lzma/LzmaTools.c +++ b/lib_generic/lzma/LzmaTools.c @@ -97,11 +97,14 @@ int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize, } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) { /* * SizeT is a 32 bit uint => We cannot manage files larger than - * 4GB! + * 4GB! Assume however that all 0xf values is "unknown size" and + * not actually a file of 2^64 bits. * */ - debug ("LZMA: 64bit support not enabled.\n"); - return SZ_ERROR_DATA; + if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) { + debug ("LZMA: 64bit support not enabled.\n"); + return SZ_ERROR_DATA; + } } debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);