Eric Sandeen 39b3f6d6e9 [PATCH] mount udf UDF_PART_FLAG_READ_ONLY partitions with MS_RDONLY ... There's a bug where a UDF_PART_FLAG_READ_ONLY udf partition gets mounted read-write, then subsequent problems happen; files seem to be able to be removed, but file creation results in EIO or worse, oops. EIO is coming from udf_new_block(), which returns EIO if the right flags aren't set; only UDF_PART_FLAG_READ_ONLY is set in this case. We probably s hould not have gotten this far... Attached patch seems to fix it - and includes a printk to alert the user that their "rw" mount request has been converted to "ro." Here's the testcase I used: [root@magnesium ~]# mkisofs -R -J -udf -o testiso /tmp/ ... Total translation table size: 0 Total rockridge attributes bytes: 342923 Total directory bytes: 382312 Path table size(bytes): 104 Max brk space used 103000 105059 extents written (205 MB) [root@magnesium ~]# mount -o loop testiso /mnt/test/ [root@magnesium ~]# ls /mnt/test/fsfile /mnt/test/fsfile [root@magnesium ~]# rm /mnt/test/fsfile [root@magnesium ~]# ls /mnt/test/fsfile ls: /mnt/test/fsfile: No such file or directory [root@magnesium ~]# touch /mnt/test/fsfile touch: cannot touch `/mnt/test/fsfile': Input/output error [root@magnesium tmp]# grep udf /proc/mounts /dev/loop1 /mnt/test udf rw 0 0 Force readonly mounts of UDF partitions marked as read-only. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-09-29 09:18:09 -07:00
..
balloc.c
crc.c
dir.c
directory.c
ecma_167.h
file.c	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
fsync.c
ialloc.c	[PATCH] inode-diet: Eliminate i_blksize from the inode structure	2006-09-27 08:26:18 -07:00
inode.c	[PATCH] inode-diet: Eliminate i_blksize from the inode structure	2006-09-27 08:26:18 -07:00
lowlevel.c
Makefile
misc.c
namei.c
osta_udf.h
partition.c
super.c	[PATCH] mount udf UDF_PART_FLAG_READ_ONLY partitions with MS_RDONLY	2006-09-29 09:18:09 -07:00
symlink.c	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
truncate.c	Fix possible UDF deadlock and memory corruption (CVE-2006-4145)	2006-08-22 12:52:23 -07:00
udf_i.h
udf_sb.h
udfdecl.h	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
udfend.h
udftime.c
unicode.c