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2009-04-02udf: Don't write integrity descriptor too oftenJan Kara5-47/+52
We update information in logical volume integrity descriptor after each allocation (as LVID contains free space, number of directories and files on disk etc.). If the filesystem is on some phase change media, this leads to its quick degradation as such media is able to handle only 10000 overwrites or so. We solve the problem by writing new information into LVID only on umount, remount-ro and sync. This solves the problem at the price of longer media inconsistency (previously media became consistent after pdflush flushed dirty LVID buffer) but that should be acceptable. Report by and patch written in cooperation with Rich Coe <Richard.Coe@med.ge.com>. Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: Try anchor in block 256 firstJan Kara2-248/+186
Anchor block can be located at several places on the medium. Two of the locations are relative to media end which is problematic to detect. Also some drives report some block as last but are not able to read it or any block nearby before it. So let's first try block 256 and if it is all fine, don't look at other possible locations of anchor blocks to avoid IO errors. This change required a larger reorganization of code but the new code is hopefully more readable and definitely shorter. Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: Some type fixes and cleanupsJan Kara1-6/+4
Make udf_check_valid() return 1 if the validity check passed and 0 otherwise. So far it was the other way around which was a bit confusing. Also make udf_vrs() return loff_t which is really the type it should return (not int). Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: use hardware sector sizeClemens Ladisch2-21/+50
This patch makes the UDF FS driver use the hardware sector size as the default logical block size, which is required by the UDF specifications. While the previous default of 2048 bytes was correct for optical disks, it was not for hard disks or USB storage devices, and made it impossible to use such a device with the default mount options. (The Linux mkudffs tool uses a default block size of 2048 bytes even on devices with smaller hardware sectors, so this bug is unlikely to be noticed unless UDF-formatted USB storage devices are exchanged with other OSs.) To avoid regressions for people who use loopback optical disk images or who used the (sometimes wrong) defaults of mkudffs, we also try with a block size of 2048 bytes if no anchor was found with the hardware sector size. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: fix novrs mount optionClemens Ladisch1-0/+1
The novrs mount option was broken due to a missing break. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: Fix oops when invalid character in filename occursJan Kara1-5/+16
Functions udf_CS0toNLS() and udf_NLStoCS0() didn't count with the fact that NLS can return negative length when invalid character is given to it for conversion. Thus interesting things could happen (such as overwriting random memory with the rest of filename). Add appropriate checks. Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: return f_fsid for statfs(2)Coly Li1-1/+3
This patch makes udf return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: Add checks to not underflow sector_tJan Kara1-8/+13
Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: fix default mode and dmode options handlingMarcin Slusarz3-6/+8
On x86 (and several other archs) mode_t is defined as "unsigned short" and comparing unsigned shorts to negative ints is broken (because short is promoted to int and then compared). Fix it. Reported-and-tested-by: Laurent Riffard <laurent.riffard@free.fr> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: fix sparse warnings:Jan Kara1-14/+8
Fix sparse warnings: fs/udf/balloc.c:843:3: warning: returning void-valued expression fs/udf/balloc.c:847:3: warning: returning void-valued expression fs/udf/balloc.c:851:3: warning: returning void-valued expression fs/udf/balloc.c:855:3: warning: returning void-valued expression Reported-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: unsigned last[i] cannot be less than 0roel kluin1-2/+0
unsigned last[i] cannot be less than 0 Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: implement mode and dmode mounting optionsMarcin Slusarz3-3/+41
"dmode" allows overriding permissions of directories and "mode" allows overriding permissions of files. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: reduce stack usage of udf_get_filenameMarcin Slusarz1-16/+25
Allocate strings with kmalloc. Checkstack output: Before: udf_get_filename: 600 After: udf_get_filename: 136 Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02udf: reduce stack usage of udf_load_pvoldescMarcin Slusarz1-11/+25
Allocate strings with kmalloc. Checkstack output: Before: udf_process_sequence: 712 After: udf_process_sequence: 200 Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02Fix the udf code not to pass structs on stack where possible.Pekka Enberg10-116/+130
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Jan Kara <jack@suse.cz>
2009-04-02Remove struct typedefs from fs/udf/ecma_167.h et al.Pekka Enberg15-442/+444
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Jan Kara <jack@suse.cz>
2009-03-26udf: Use lowercase names of quota functionsJan Kara2-11/+11
Use lowercase names of quota functions instead of old uppercase ones. Signed-off-by: Jan Kara <jack@suse.cz>
2009-01-22fs/Kconfig: move iso9660, udf outAlexey Dobriyan1-0/+18
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-12-04Merge branch 'master' into nextJames Morris1-0/+1
Conflicts: fs/nfsd/nfs4recover.c Manually fixed above to use new creds API functions, e.g. nfs4_save_creds(). Signed-off-by: James Morris <jmorris@namei.org>
2008-11-27udf: Fix BUG_ON() in destroy_inode()Jan Kara1-0/+1
udf_clear_inode() can leave behind buffers on mapping's i_private list (when we truncated preallocation). Call invalidate_inode_buffers() so that the list is properly cleaned-up before we return from udf_clear_inode(). This is ugly and suggest that we should cleanup preallocation earlier than in clear_inode() but currently there's no such call available since drop_inode() is called under inode lock and thus is unusable for disk operations. Signed-off-by: Jan Kara <jack@suse.cz>
2008-11-14CRED: Wrap task credential accesses in the UDF filesystemDavid Howells2-3/+3
Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: James Morris <jmorris@namei.org>
2008-10-23[PATCH] get rid of on-stack dentry in udfAl Viro1-15/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23[PATCH] switch all filesystems over to d_obtain_aliasChristoph Hellwig1-15/+2
Switch all users of d_alloc_anon to d_obtain_alias. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-13vfs: Use const for kernel parser tableSteven Whitehouse1-1/+1
This is a much better version of a previous patch to make the parser tables constant. Rather than changing the typedef, we put the "const" in all the various places where its required, allowing the __initconst exception for nfsroot which was the cause of the previous trouble. This was posted for review some time ago and I believe its been in -mm since then. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-08udf: add llseek methodChristoph Hellwig1-0/+1
UDF currently doesn't set a llseek method for regular files, which means it will fall back to default_llseek. This means no one can seek beyond 2 Gigabytes on udf, and that there's not protection vs the i_size updates from writers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
2008-08-19udf: Fix error paths in udf_new_inode()Jan Kara1-23/+18
I case we failed to allocate memory for inode when creating it, we did not properly free block already allocated for this inode. Move memory allocation before the block allocation which fixes this issue (thanks for the idea go to Ingo Oeser <ioe-lkml@rameria.de>). Also remove a few superfluous initializations already done in udf_alloc_inode(). Reviewed-by: Ingo Oeser <ioe-lkml@rameria.de> Signed-off-by: Jan Kara <jack@suse.cz>
2008-08-19udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2)Jan Kara1-2/+1
A memory allocation inside alloc_mutex must not recurse back into the filesystem itself because that leads to lock inversion between iprune_mutex and alloc_mutex (and thus to deadlocks - see traces below). alloc_mutex is actually needed only to update allocation statistics in the superblock so we can drop it before we start allocating memory for the inode. tar D ffff81015b9c8c90 0 6614 6612 ffff8100d5a21a20 0000000000000086 0000000000000000 00000000ffff0000 ffff81015b9c8c90 ffff81015b8f0cd0 ffff81015b9c8ee0 0000000000000000 0000000000000003 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<ffffffff803c1d8a>] __mutex_lock_slowpath+0x64/0x9b [<ffffffff803c1bef>] mutex_lock+0xa/0xb [<ffffffff8027f8c2>] shrink_icache_memory+0x38/0x200 [<ffffffff80257742>] shrink_slab+0xe3/0x15b [<ffffffff802579db>] try_to_free_pages+0x221/0x30d [<ffffffff8025657e>] isolate_pages_global+0x0/0x31 [<ffffffff8025324b>] __alloc_pages_internal+0x252/0x3ab [<ffffffff8026b08b>] cache_alloc_refill+0x22e/0x47b [<ffffffff8026ae37>] kmem_cache_alloc+0x3b/0x61 [<ffffffff8026b15b>] cache_alloc_refill+0x2fe/0x47b [<ffffffff8026b34e>] __kmalloc+0x76/0x9c [<ffffffffa00751f2>] :udf:udf_new_inode+0x202/0x2e2 [<ffffffffa007ae5e>] :udf:udf_create+0x2f/0x16d [<ffffffffa0078f27>] :udf:udf_lookup+0xa6/0xad ... kswapd0 D ffff81015b9d9270 0 125 2 ffff81015b903c28 0000000000000046 ffffffff8028cbb0 00000000fffffffb ffff81015b9d9270 ffff81015b8f0cd0 ffff81015b9d94c0 000000000271b490 ffffe2000271b458 ffffe2000271b420 ffffe20002728dc8 ffffe20002728d90 Call Trace: [<ffffffff8028cbb0>] __set_page_dirty+0xeb/0xf5 [<ffffffff8025403a>] get_dirty_limits+0x1d/0x22f [<ffffffff803c1d8a>] __mutex_lock_slowpath+0x64/0x9b [<ffffffff803c1bef>] mutex_lock+0xa/0xb [<ffffffffa0073f58>] :udf:udf_bitmap_free_blocks+0x47/0x1eb [<ffffffffa007df31>] :udf:udf_discard_prealloc+0xc6/0x172 [<ffffffffa007875a>] :udf:udf_clear_inode+0x1e/0x48 [<ffffffff8027f121>] clear_inode+0x6d/0xc4 [<ffffffff8027f7f2>] dispose_list+0x56/0xee [<ffffffff8027fa5a>] shrink_icache_memory+0x1d0/0x200 [<ffffffff80257742>] shrink_slab+0xe3/0x15b [<ffffffff80257e93>] kswapd+0x346/0x447 ... Reported-by: Tibor Tajti <tibor.tajti@gmail.com> Reviewed-by: Ingo Oeser <ioe-lkml@rameria.de> Signed-off-by: Jan Kara <jack@suse.cz>
2008-07-26SL*B: drop kmem cache argument from constructorAlexey Dobriyan1-1/+1
Kmem cache passed to constructor is only needed for constructors that are themselves multiplexeres. Nobody uses this "feature", nor does anybody uses passed kmem cache in non-trivial way, so pass only pointer to object. Non-trivial places are: arch/powerpc/mm/init_64.c arch/powerpc/mm/hugetlbpage.c This is flag day, yes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Matt Mackall <mpm@selenic.com> [akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c] [akpm@linux-foundation.org: fix mm/slab.c] [akpm@linux-foundation.org: fix ubifs] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-24udf: Fix regression in UDF anchor block detectionTomas Janousek1-34/+23
In some cases it could happen that some block passed test in udf_check_anchor_block() even though udf_read_tagged() refused to read it later (e.g. because checksum was not correct). This patch makes udf_check_anchor_block() use udf_read_tagged() so that the checking is stricter. This fixes the regression (certain disks unmountable) caused by commit 423cf6dc04eb79d441bfda2b127bc4b57134b41d. Signed-off-by: Tomas Janousek <tomi@nomi.cz> Signed-off-by: Jan Kara <jack@suse.cz>
2008-06-16udf: restore UDFFS_DEBUG to being undefined by defaultPaul Collins1-1/+1
Commit 706047a79725b585cf272fdefc234b31b6545c72, "udf: Fix compilation warnings when UDF debug is on" inadvertently (I assume) enabled debugging messages by default for UDF. This patch disables them again. Signed-off-by: Paul Collins <paul@ondioline.org> Signed-off-by: Jan Kara <jack@suse.cz>
2008-05-08Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6Linus Torvalds4-6/+145
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6: udf: Fix memory corruption when fs mounted with noadinicb option udf: Make udf exportable udf: fs/udf/partition.c:udf_get_pblock() mustn't be inline
2008-05-07udf: Fix memory corruption when fs mounted with noadinicb optionJan Kara1-2/+3
When UDF filesystem is mounted with noadinicb mount option, it happens that we extend an empty directory with a block. A code in udf_add_entry() didn't count with this possibility and used uninitialized data leading to memory and filesystem corruption. Add a check whether file already has some extents before operating on them. Signed-off-by: Jan Kara <jack@suse.cz>
2008-05-07udf: Make udf exportableRasmus Rohde3-2/+140
Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Rasmus Rohde <rohde@duff.dk> Signed-off-by: Jan Kara <jack@suse.cz>
2008-04-30fs: replace remaining __FUNCTION__ occurrencesHarvey Harrison1-2/+2
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28udf: fs/udf/partition.c:udf_get_pblock() mustn't be inlineAdrian Bunk1-2/+2
This patch fixes the following build error with UML and gcc 4.3: <-- snip --> ... CC fs/udf/partition.o /home/bunk/linux/kernel-2.6/git/linux-2.6/fs/udf/partition.c: In function ‘udf_get_pblock_virt15’: /home/bunk/linux/kernel-2.6/git/linux-2.6/fs/udf/partition.c:32: sorry, unimplemented: inlining failed in call to ‘udf_get_pblock’: function body not available /home/bunk/linux/kernel-2.6/git/linux-2.6/fs/udf/partition.c:102: sorry, unimplemented: called from here make[3]: *** [fs/udf/partition.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz>
2008-04-28udf: fix sparse warning in namei.cHarvey Harrison1-4/+4
Let's use bsize instead. fs/udf/namei.c:960:12: warning: symbol 'elen' shadows an earlier one fs/udf/namei.c:937:15: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-17udf: use crc_itu_t from lib instead of udf_crcBob Copeland8-203/+31
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>
2008-04-17udf: Fix compilation warnings when UDF debug is onSebastian Manciulea2-4/+5
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>
2008-04-17udf: Fix bug in VAT mapping codeSebastian Manciulea2-5/+4
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>
2008-04-17udf: Add read-only support for 2.50 UDF mediaJan Kara5-14/+258
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>
2008-04-17udf: Fix handling of multisession mediaSebastian Manciulea2-9/+6
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>
2008-04-17udf: Mount filesystem read-only if it has pseudooverwrite partitionJan Kara1-0/+8
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>
2008-04-17udf: Handle VAT packed inside inode properlyJan Kara2-12/+22
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>
2008-04-17udf: Allow loading of VAT inodeJan Kara1-0/+1
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>
2008-04-17udf: Fix detection of VAT versionJan Kara1-2/+2
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>
2008-04-17udf: Silence warning about accesses beyond end of deviceJan Kara1-1/+5
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>
2008-04-17udf: Improve anchor block detectionJan Kara1-4/+9
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>
2008-04-17udf: Cleanup anchor block detection.Jan Kara2-142/+99
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>
2008-04-17udf: Move processing of virtual partitionsJan Kara1-80/+85
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>
2008-04-17udf: Move filling of partition descriptor info into a separate functionJan Kara1-56/+62
Signed-off-by: Jan Kara <jack@suse.cz>
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