talos-op-linux/fs/udf, branch master

udf: Clarify meaning of f_files in udf_statfs

2020-01-20T12:59:41+00:00

UDF does not have separate preallocated table of inodes. So similarly to XFS we pretend that every free block is also a free inode in statfs(2) output. Clarify this in a comment. Signed-off-by: Jan Kara

udf: Allow writing to 'Rewritable' partitions

2020-01-20T12:59:17+00:00

UDF 2.60 standard states in section 2.2.14.2: A partition with Access Type 3 (rewritable) shall define a Freed Space Bitmap or a Freed Space Table, see 2.3.3. All other partitions shall not define a Freed Space Bitmap or a Freed Space Table. Rewritable partitions are used on media that require some form of preprocessing before re-writing data (for example legacy MO). Such partitions shall use Access Type 3. Overwritable partitions are used on media that do not require preprocessing before overwriting data (for example: CD-RW, DVD-RW, DVD+RW, DVD-RAM, BD-RE, HD DVD-Rewritable). Such partitions shall use Access Type 4. however older versions of the standard didn't have this wording and there are tools out there that create UDF filesystems with rewritable partitions but that don't contain a Freed Space Bitmap or a Freed Space Table on media that does not require pre-processing before overwriting a block. So instead of forcing media with rewritable partition read-only, base this decision on presence of a Freed Space Bitmap or a Freed Space Table. Reported-by: Pali Rohár Reviewed-by: Pali Rohár Fixes: b085fbe2ef7f ("udf: Fix crash during mount") Link: https://lore.kernel.org/linux-fsdevel/20200112144735.hj2emsoy4uwsouxz@pali Signed-off-by: Jan Kara

udf: Disallow R/W mode for disk with Metadata partition

2020-01-13T11:40:17+00:00

Currently we do not support writing to UDF disks with Metadata partition. There is already check that disks with declared minimal write revision to UDF 2.50 or higher are mounted only in R/O mode but this does not cover situation when minimal write revision is set incorrectly (e.g. to 2.01). Link: https://lore.kernel.org/r/20200112144959.28104-1-pali.rohar@gmail.com Signed-off-by: Pali Rohár Signed-off-by: Jan Kara

udf: Fix meaning of ENTITYID_FLAGS_* macros to be really bitwise-or flags

2020-01-13T11:38:46+00:00

Currently ENTITYID_FLAGS_* macros definitions are written as hex numbers but their meaning is not bitwise-or flags. But rather bit position. This is unusual and could be misleading. So change meaning of ENTITYID_FLAGS_* macros definitions to be really bitwise-or flags. Link: https://lore.kernel.org/r/20200112221353.29711-1-pali.rohar@gmail.com Signed-off-by: Pali Rohár Signed-off-by: Jan Kara

udf: Fix free space reporting for metadata and virtual partitions

2020-01-09T17:38:18+00:00

Free space on filesystems with metadata or virtual partition maps currently gets misreported. This is because these partitions are just remapped onto underlying real partitions from which keep track of free blocks. Take this remapping into account when counting free blocks as well. Reviewed-by: Pali Rohár Reported-by: Pali Rohár Signed-off-by: Jan Kara

udf: Update header files to UDF 2.60

2020-01-08T10:12:20+00:00

This change synchronizes header files ecma_167.h and osta_udf.h with udftools 2.2 project which already has definitions for UDF 2.60 revision. Link: https://lore.kernel.org/r/20200107212904.30471-3-pali.rohar@gmail.com Signed-off-by: Pali Rohár Signed-off-by: Jan Kara

udf: Move OSTA Identifier Suffix macros from ecma_167.h to osta_udf.h

2020-01-08T10:12:18+00:00

Rename structure name and its members to match naming convention and fix endianity type for UDFRevision member. Also remove duplicate definition of UDF_ID_COMPLIANT which is already in osta_udf.h. Link: https://lore.kernel.org/r/20200107212904.30471-2-pali.rohar@gmail.com Signed-off-by: Pali Rohár Signed-off-by: Jan Kara

udf: Fix spelling in EXT_NEXT_EXTENT_ALLOCDESCS

2020-01-08T10:11:46+00:00

Change EXT_NEXT_EXTENT_ALLOCDECS to proper spelling EXT_NEXT_EXTENT_ALLOCDESCS. Link: https://lore.kernel.org/r/20200107212904.30471-1-pali.rohar@gmail.com Signed-off-by: Pali Rohár Signed-off-by: Jan Kara

fs-udf: Delete an unnecessary check before brelse()

2019-09-04T16:19:43+00:00

The brelse() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Link: https://lore.kernel.org/r/a254c1d1-0109-ab51-c67a-edc5c1c4b4cd@web.de Signed-off-by: Jan Kara

udf: Drop forward function declarations

2019-09-04T16:19:43+00:00

Move some functions to make forward declarations unnecessary. Signed-off-by: Jan Kara