Campbell Suter 9dba07f143 Fix squashfs failing to load sparse files ...

SquashFS supports sprase blocks in files - that is, if a given block is
composed only of zeros, it's not written to the output file to save
space and it's on-disk length field is set to zero to indicate that.

Previously the squashfs driver did not recognise that, and would attempt
to read and decompress a zero-sized block, which obviously failed.

The following command may be used to create a file for testing:

cat <(dd if=/dev/urandom of=/dev/stdout bs=1M count=1) \
	<(dd if=/dev/zero of=/dev/stdout bs=1M count=1) \
	<(dd if=/dev/urandom of=/dev/stdout bs=1k count=200) >test_file

Signed-off-by: Campbell Suter <campbell@snapit.group>

2021-01-20 14:01:44 -05:00

..

Kconfig

…

Makefile

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sqfs_decompressor.c

fs/squashfs: add support for LZO decompression

2020-08-24 14:11:31 -04:00

sqfs_decompressor.h

fs/squashfs: replace sqfs_decompress() parameter

2020-08-24 14:11:31 -04:00

sqfs_dir.c

fs/squashfs: Fix Coverity Scan defects

2020-09-18 16:19:58 -04:00

sqfs_filesystem.h

fs/squashfs: add support for ZSTD decompression

2020-08-24 14:11:31 -04:00

sqfs_inode.c

fs/squashfs: Fix index off by 1 for inode SQFS_LDIR_TYPE

2020-11-19 09:45:49 -05:00

sqfs_utils.h

…

sqfs.c

Fix squashfs failing to load sparse files

2021-01-20 14:01:44 -05:00