Steven J. Magnani 70f19f5869 udf: Don't corrupt unalloc spacetable when writing it ... For a UDF filesystem configured with an Unallocated Space Table, a filesystem operation that triggers an update to the table results in on-disk corruption that prevents remounting: udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 274 For example: 1. Create a filesystem $ mkudffs --media-type=hd --blocksize=512 --lvid=BUGTEST \ --vid=BUGTEST --fsid=BUGTEST --space=unalloctable \ /dev/mmcblk0 2. Mount it # mount /dev/mmcblk0 /mnt 3. Create a file $ echo "No corruption, please" > /mnt/new.file 4. Umount # umount /mnt 5. Attempt remount # mount /dev/mmcblk0 /mnt This appears to be a longstanding bug caused by zero-initialization of the Unallocated Space Entry block buffer and only partial repopulation of required fields before writing to disk. Commit 0adfb339fd64 ("udf: Fix unalloc space handling in udf_update_inode") addressed one such field, but several others are required. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Jan Kara <jack@suse.com>		2015-07-09 16:38:57 +02:00
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balloc.c
dir.c	udf: Make udf_get_filename() return error instead of 0 length file name	2015-05-18 11:23:06 +02:00
directory.c
ecma_167.h
file.c	udf: remove double err declaration in udf_file_write_iter()	2015-05-18 11:23:09 +02:00
ialloc.c
inode.c	udf: Don't corrupt unalloc spacetable when writing it	2015-07-09 16:38:57 +02:00
Kconfig
lowlevel.c
Makefile
misc.c
namei.c	UDF: support NFSv2 export	2015-05-18 11:23:08 +02:00
osta_udf.h
partition.c
super.c	udf: fix udf_load_pvoldesc()	2015-05-21 15:19:15 +02:00
symlink.c	udf: Return -ENOMEM when allocation fails in udf_get_filename()	2015-05-18 11:23:03 +02:00
truncate.c
udf_i.h	fs: cleanup slight list_entry abuse	2015-06-23 18:01:59 -04:00
udf_sb.h
udfdecl.h
udfend.h
udftime.c
unicode.c	udf: Make udf_get_filename() return error instead of 0 length file name	2015-05-18 11:23:06 +02:00