The object QVariant is a native object in the Qt world that represents
any type of value: boolean, integer, string, floating point, date,
UUID...
This change updates the API to use the object QVariant and provide a
more flexible API to represent the filesystem features.
In some cases, it may be necessary to create a filesystem with specific features
enabled/disabled.
This PR makes it possible to create filesystems this way. It does so
by introducing a new m_Features member variable and the createWithFeatures()
function to the FileSystem base class. The latter function is implemented
for the btrfs, ext2/3/4 and FAT filesystems.
Additionnally, the CreateFileSystemJob has been modified to enable
creating/formatting filesystems with specific features enabled.
Differential Revision: https://phabricator.kde.org/D21903
CCBUG: 342178
This would rapidly simplify UDF code if all checks are done by caller.
Also checks for MIN_UDF_BLOCKS/MAX_UDF_BLOCKS are removed as they should be
covered by udf::minCapacity() and udf::maxCapacity().
Mkudffs from udftools prior to version 1.1 damages the label if it contains
non-ASCII characters.
The Volume Identifier (--vid) can only contain 30 bytes, either 30
ISO-8859-1 (Latin 1) characters or 15 UCS-2BE characters. Store the most
characters possible in the Volume Identifier.
Some file systems such as UDF or F2FS only support writing labels when creating
them.
At the moment this only works in new partition dialog and not in the partition
properties dialog.
For reading UDF label and UUID is needed blkid >= 2.30. For creating new
UDF filesystem is needed mkudffs binary from the udftools package.
When creating new UDF fileystem, revision 2.01 for hard disk media is used.
Therefore it is not possible to use it for optical (or other) medias.
Problems:
* Check for min and max capacity is incorrect as it depends on logical
(sector) size of the disk.
* Check for max label length is incorrect too as it depends on characters
itself in label.
* Specifying label is not working yet as FileSystem::create() does not get
label parameter.
* UDF filesystem should be used on unpartitioned disk, without MBR or GPT
and spanning whole disk, but KDE Partition Manager does not support it.
* When MBR is used, MBR partition id should be 0x07, but currently it is
incorrect 0x83. See: https://serverfault.com/a/829172 (same for GPT)
Andrius Štikonas
Gaël PORTAY
Arnaud Ferraris
Shubham Jangra
Pali Rohár