Decompressors: check for write errors in decompress_unlzma.c
commit528941ca05734f24a7568c1c082125f2b635c4eb
authorLasse Collin <lasse.collin@tukaani.org>
Thu, 13 Jan 2011 01:01:18 +0000 (12 17:01 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 13 Jan 2011 16:03:24 +0000 (13 08:03 -0800)
tree1fb14770f7605c09863175787671217408203c26
parent278208d9d631524d04152574f87b9b88919ce663
Decompressors: check for write errors in decompress_unlzma.c

The return value of wr->flush() is not checked in write_byte().  This
means that the decompressor won't stop even if the caller doesn't want
more data.  This can happen e.g.  with corrupt LZMA-compressed initramfs.
Returning the error quickly allows the user to see the error message
quicker.

There is a similar missing check for wr.flush() near the end of unlzma().

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>
lib/decompress_unlzma.c