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As pointed out by Sergey Vlasov, UDF implements its own version of
the CRC ITU-T V.41. Convert it to use the one in the library.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Cc: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Jan Kara <jack@suse.cz>
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Fix two compilation warnings (and actual bugs in message formatting)
when UDF debugging is turned on.
Signed-off-by: Sebastian Manciulea <manciuleas@yahoo.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Fix mapping of blocks using VAT when it is stored in an inode.
UDF_I(inode)->i_data already points to the beginning of VAT header so there's
no need to add udf_ext0_offset(inode).
Signed-off-by: Sebastian Manciulea <manciuleas@yahoo.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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This patch implements parsing of metadata partitions and reading of Metadata
File thus allowing to read UDF 2.50 media. Error resilience is implemented
through accessing the Metadata Mirror File in case the data the Metadata File
cannot be read. The patch is based on the original patch by Sebastian Manciulea
<manciuleas@yahoo.com> and Mircea Fedoreanu <mirceaf_spl@yahoo.com>.
Signed-off-by: Sebastian Manciulea <manciuleas@yahoo.com>
Signed-off-by: Mircea Fedoreanu <mirceaf_spl@yahoo.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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According to OSTA UDF specification, only anchor blocks and primary volume
descriptors are placed on media relative to the last session. All other block
numbers are absolute (in the partition or the whole media). This seems to be
confirmed by multisession media created by other systems.
Signed-off-by: Sebastian Manciulea <manciuleas@yahoo.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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As we don't properly support writing to pseudooverwrite partition (we should
add entries to VAT and relocate blocks instead of just writing them), mount
filesystems with such partition as read-only.
Signed-off-by: Jan Kara <jack@suse.cz>
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We didn't handle VAT packed inside the inode - we tried to call udf_block_map()
on such file which lead to strange results at best. Add proper handling of
packed VAT as we do it with other packed files.
Signed-off-by: Jan Kara <jack@suse.cz>
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UDF media with VAT could have never worked because udf_fill_inode() didn't
know about case FILE_TYPE_VAT20. Fix this.
Signed-off-by: Jan Kara <jack@suse.cz>
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We incorrectly (way to strictly) checked version of VAT on loading and thus
refuse to mount correct media. There are just two format versions - below 2.0
and above 2.0 and we understand both. So update the version check accordingly.
Signed-off-by: Jan Kara <jack@suse.cz>
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Some of the computed positions of anchor block could be beyond the end of
device. Skip reading such blocks.
Signed-off-by: Jan Kara <jack@suse.cz>
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Add <last block>+1 and <last block>-1 to a list of blocks which can be the
real last recorded block on a UDF media. Sebastian Manciulea
<manciuleas@yahoo.com> claims this helps some drive + media combinations
he is able to test.
Signed-off-by: Jan Kara <jack@suse.cz>
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UDF anchor block detection is complicated by several things - there are several
places where the anchor point can be, some of them relative to the last
recorded block which some devices report wrongly. Moreover some devices on some
media seem to have 7 spare blocks sectors for every 32 blocks (at least as far
as I understand the old code) so we have to count also with that possibility.
This patch splits anchor block detection into several functions so that it is
clearer what we actually try to do. We fix several bugs of the type "for such
and such media, we fail to check block blah" as a result of the cleanup.
Signed-off-by: Jan Kara <jack@suse.cz>
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This patch move processing of UDF virtual partitions close to the place
where other partition types are processed. As a result we now also
properly fill in partition access type.
Signed-off-by: Jan Kara <jack@suse.cz>
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Signed-off-by: Jan Kara <jack@suse.cz>
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Report error when we fail to allocate memory for a bitmap and properly
release allocated memory and inodes for all the partitions in case of
mount failure and umount.
Signed-off-by: Jan Kara <jack@suse.cz>
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Cleanup processing of volume descriptor sequence so that it is more readable,
make code handle errors (e.g. media problems) better.
Signed-off-by: Jan Kara <jack@suse.cz>
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According to ECMA 167 rev. 3 (see 3/8.4.2.1), Anchor Volume Descriptor
Pointer should be recorded at two or more anchor points located at sectors
256, N, N - 256, where N - is a largest logical sector number at volume
space.
So we should always try to detect N on UDF volume before trying to find
Anchor Volume Descriptor (i.e. calling to udf_find_anchor()).
That said, all this patch does is updates the s_last_block even if the
udf_vrs() returns positive value.
Originally written and tested by Yuri Per, ported on latest mainline by me.
Signed-off-by: Yuri Per <Yuri.Per@acronis.com>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Max Lyadvinsky <Max.Lyadvinsky@acronis.com>
Cc: Vladimir Simonov <Vladimir.Simonov@acronis.com>
Cc: Andrew Neporada <Andrew.Neporada@acronis.com>
Cc: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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There are several places in UDF where we declared temporary arrays of
UDF_NAME_LEN bytes on stack. This is not nice to stack usage so this patch
changes those places to use kmalloc() instead. Also clean up bail-out paths
in those functions when we are changing them.
Signed-off-by: Jan Kara <jack@suse.cz>
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We don't have to check whether a directory entry already exists in a directory
when creating a new one since we've already checked that earlier by lookup and
we are holding directory i_mutex all the time.
Signed-off-by: Jan Kara <jack@suse.cz>
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Mark udf_process_sequence() as noinline since stack usage is terrible
otherwise.
Signed-off-by: Jan Kara <jack@suse.cz>
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reorganize few code blocks in super.c which
were needlessly indented (and hard to read):
so change from:
rettype fun()
{
init;
if (sth) {
long block of code;
}
}
to:
rettype fun()
{
init;
if (!sth)
return;
long block of code;
}
or
from:
rettype fun2()
{
init;
while (sth) {
init2();
if (sth2) {
long block of code;
}
}
}
to:
rettype fun2()
{
init;
while (sth) {
init2();
if (!sth2)
continue;
long block of code;
}
}
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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remove now unneeded kernel_timestamp type with conversion functions
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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* kernel_timestamp type was almost unused - only callers of udf_stamp_to_time
and udf_time_to_stamp used it, so let these functions handle endianness
internally and don't clutter code with conversions
* rename udf_stamp_to_time to udf_disk_stamp_to_time
and udf_time_to_stamp to udf_time_to_disk_stamp
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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block cannot be less than 0, because it's sector_t,
so remove unneeded checks
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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replace handwritten bits counting with bitmap_weight
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- translate udf_file_entry_alloc_offset macro into function
- translate udf_ext0_offset macro into function
- add comment about crypticly named fields in struct udf_inode_info
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- move all brelse(ibh) after main if, because it's called
on every path except one where ibh is null
- move variables to the most inner blocks
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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replace all:
little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) +
expression_in_cpu_byteorder);
with:
leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder);
sparse didn't generate any new warning with this patch
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com
Signed-off-by: Jan Kara <jack@suse.cz>
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
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- remove one indentation level by little code reorganization
- convert "if (smth) BUG();" to "BUG_ON(smth);"
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- constify internal crc table
- mark udf_crc "in" parameter as const
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- fix error handling - always zero output variable
- don't zero explicitely fields zeroed by memset
- mark "in" paramater as const
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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udf_build_ustr was broken:
- size == 1:
dest->u_len = ptr[1 - 1], but at ptr[0] there's cmpID,
so we created string with wrong length
it should not happen, so we BUG() it
- size > 1 and size < UDF_NAME_LEN:
we set u_len correctly, but memcpy copied one needless byte
- size == UDF_NAME_LEN - 1:
memcpy overwrited u_len - with correct value, but...
- size >= UDF_NAME_LEN:
we copied UDF_NAME_LEN - 1 bytes, but dest->u_name is array
of UDF_NAME_LEN - 2 bytes, so we were overwriting u_len with
character from input string
nobody noticed because all callers set size
to acceptable values (constants within range)
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- fix error handling - always zero output variable
- don't zero explicitely fields zeroed by memset
- mark "in" paramater as const
- remove outdated comment
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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This patch makes the needlessly global udf_error() static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
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- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
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There's really no reason to keep udf headers in include/linux as they're
not used by anything but fs/udf/.
This patch merges most of include/linux/udf_fs_i.h into fs/udf/udf_i.h,
include/linux/udf_fs_sb.h into fs/udf/udf_sb.h and
include/linux/udf_fs.h into fs/udf/udfdecl.h.
The only thing remaining in include/linux/ is a stub of udf_fs_i.h
defining the four user-visible udf ioctls. It's also moved from
unifdef-y to headers-y because it can be included unconditionally now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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There's not need to document vfs method invocation rules, we have
Documentation/filesystems/vfs.txt and Documentation/filesystems/Locking
for that. Also a lot of these comments where either plain wrong or
horrible out of date.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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This helper has been quite useless since sb_min_blocksize was introduced
and is misnamed while we're at it. Just opencode the few lines in the
caller instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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the "ikeep" option is set rather than "noikeep".
This regression was introduced in 970451.
With no mount options specified, xfs_parseargs() does the following:
int ikeep = 0;
args->flags |= XFSMNT_BARRIER;
args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
if (!options)
goto done;
It only sets the above two options by default and before, it also used to
set XFSMNT_IDELETE by default.
If options are specified, then
if (!(args->flags & XFSMNT_DMAPI) && !ikeep)
args->flags |= XFSMNT_IDELETE;
is executed later on which is skipped by the "goto done;" above.
The solution is to invert the logic.
SGI-PV: 977771
SGI-Modid: xfs-linux-melb:xfs-kern:30590a
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
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* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6:
[XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac
[XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac
Remove empty file fs/xfs/Makefile-linux-2.6.
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: add missing ext4_journal_stop()
ext4: ext4_find_next_zero_bit needs an aligned address on some arch
ext4: set EXT4_EXTENTS_FL only for directory and regular files
ext4: Don't mark filesystem error if fallocate fails
ext4: Fix BUG when writing to an unitialized extent
ext4: Don't use ext4_dec_count() if not needed
ext4: modify block allocation algorithm for the last group
ext4: Don't claim block from group which has corrupt bitmap
ext4: Get journal write access before modifying the extent tree
ext4: Fix memory and buffer head leak in callers to ext4_ext_find_extent()
ext4: Don't leave behind a half-created inode if ext4_mkdir() fails
ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!
ext4: Fix locking hierarchy violation in ext4_fallocate()
Remove incorrect BKL comments in ext4
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platform.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30559a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
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platform.
SGI-PV: 974005
SGI-Modid: xfs-linux-melb:xfs-kern:30558a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
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Add missing ext4_journal_stop() in error handling.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: adilger@clusterfs.com
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mingming Cao <cmm@us.ibm.com>
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Change getting task_struct by get_proc_task() at read or write time,
and returns -ESRCH if get_proc_task() returns NULL.
This is same behavior as other /proc files.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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At lstats_open(), calling get_proc_task() gets task struct, but it never put.
put_task_struct() should be called when releasing.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Reading /proc/<pid>/latency or /proc/<pid>/task/<tid>/latency could cause
NULL pointer dereference.
In lstats_open(), get_proc_task() can return NULL, in which case the kernel
will oops at lstats_show_proc() because m->private is NULL.
When get_proc_task() returns NULL, the kernel should return -ENOENT.
This can be reproduced by the following script.
while :
do
date
bash -c 'ls > ls.$$' &
pid=$!
cat /proc/$pid/latency &
cat /proc/$pid/latency &
cat /proc/$pid/latency &
cat /proc/$pid/latency
done
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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