linux/fs/udf
Peter A. Felvegi 444996027e udf: fix for pathetic mount times in case of invalid file system
The UDF driver was not strict enough about checking the IDs in the
VSDs when mounting, which resulted in reading through all the sectors
of the block device in some unfortunate cases. Eg, trying to mount my
uninitialized 200G SSD partition (all 0xFF bytes) took ~350 minutes to
fail, because the code expected some of the valid IDs or a zero byte.
During this, the mount couldn't be killed, sync from the cmdline
blocked, and the machine froze into the shutdown. Valid filesystems
(extX, btrfs, ntfs) were rejected by the mere accident of having a
zero byte at just the right place in some of their sectors, close
enough to the beginning not to generate excess I/O. The fix adds a
hard limit on the VSD sector offset, adds the two missing VSD IDs, and
stops scanning when encountering an invalid ID. Also replaced the
magic number 32768 with a more meaningful #define, and supressed the
bogus message about failing to read the first sector if no UDF fs was
detected.

Signed-off-by: Peter A. Felvegi <petschy@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2013-10-18 22:39:07 +02:00
..
balloc.c udf: Fix handling of i_blocks 2012-02-29 21:53:47 +01:00
dir.c [readdir] convert udf 2013-06-29 12:46:50 +04:00
directory.c udf: Neaten udf_debug uses 2011-10-31 23:43:58 +01:00
ecma_167.h
file.c aio: Kill aio_rw_vect_retry() 2013-07-30 11:53:12 -04:00
ialloc.c udf: Fortify LVID loading 2013-09-24 11:23:33 +02:00
inode.c truncate: drop 'oldsize' truncate_pagecache() parameter 2013-09-12 15:38:02 -07:00
Kconfig Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 2011-01-11 14:45:52 -08:00
lowlevel.c udf: Neaten udf_debug uses 2011-10-31 23:43:58 +01:00
Makefile
misc.c udf: Rename udf_error to udf_err 2011-10-10 19:29:01 +02:00
namei.c udf: provide ->tmpfile() 2013-06-29 12:57:12 +04:00
osta_udf.h
partition.c udf: Cleanup metadata flags handling 2011-10-31 23:49:48 +01:00
super.c udf: fix for pathetic mount times in case of invalid file system 2013-10-18 22:39:07 +02:00
symlink.c udf: Treat symlink component of type 2 as / 2012-01-09 13:52:08 +01:00
truncate.c udf: Do not decrement i_blocks when freeing indirect extent block 2012-07-09 13:24:21 +02:00
udf_i.h udf: add extent cache support in case of file reading 2013-01-22 10:48:31 +01:00
udf_sb.h udf: Fortify LVID loading 2013-09-24 11:23:33 +02:00
udfdecl.h udf: add extent cache support in case of file reading 2013-01-22 10:48:31 +01:00
udfend.h
udftime.c udf: Convert printks to pr_<level> 2011-10-31 23:43:52 +01:00
unicode.c udf: Convert printks to pr_<level> 2011-10-31 23:43:52 +01:00