In Gtk3 the progress bar height is fixed and defined by the CSS theme in
use. Changing the widget allocation size does nothing, it is always
rendered the same way.
In many themes, including Adwaita, the progressbar is very, very thin.
Provide custom CSS to specify a height of 8 pixels.
The CSS source string has to be differentiated for Gtk pre and post
3.20, because Gtk 3.20 introduced some breaking changes in the way CSS
is handled.
References:
[1] Migrating from GTK+ 2.x to GTK+ 3 - Parsing of custom resources
https://developer.gnome.org/gtk3/stable/gtk-migrating-GtkStyleContext-parsing.html
[2] Gtk3 Reference Documentation - Changes in GTK+ 3.20
https://developer.gnome.org/gtk3/stable/ch32s10.html
[3] Gnome/HowDoI - Custom Style
https://wiki.gnome.org/HowDoI/CustomStyleCloses#7 - Port to Gtk3
There is a bug affecting Gtk+ 3.22.8 to 3.22.30 in which destroying a
GtkComboBox when it is not hidden results in this message:
Gtk-CRITICAL **: gtk_widget_is_drawable: assertion 'GTK_IS_WIDGET (widget)' failed
This happens in GParted when some dialogs are closed, for example the
Create New Partition and Create Partition Table dialogs. To work around
the issue we call Gtk::Dialog::hide() in the destructors of our dialog
classes.
The issue was fixed in Gtk 3.24.0.
* Gtk 3.22.8 was released in February 2017.
* Gtk 3.24.0 was released in September 2018.
References:
[1] Gtk Issue - GtkComboBox::private::popup_window can be NULL
https://gitlab.gnome.org/GNOME/gtk/issues/125
[2] Gtk commit - combobox: popdown() the menu during unmap()
7401794de6
[3] Gtk commit - Check for NULL priv->popup_window in
gtk_combo_box_popdown()
aa5d926c84Closes#7 - Port to Gtk3
In Gtk2 widgets draw themselves in response to the expose event signal.
In Gtk3 widgets draw themselves in response to the GtkWidget::draw
signal, and the signal handler gets a Cairo context as an argument.
Convert Gtk::DrawingArea rendering code to respond to the
GtkWidget::draw signal.
This commit is specific to the drawing area in the Create new Partition
dialog and the Resize/Move dialog.
Reference:
[1] Migrating from GTK+ 2.x to GTK+ 3 - "The GtkWidget::draw signal":
https://developer.gnome.org/gtk3/stable/ch26s02.html#id-1.6.3.4.11Closes#7 - Port to Gtk3
In Gtk2 widgets draw themselves in response to the expose event signal.
In Gtk3 widgets draw themselves in response to the GtkWidget::draw
signal, and the signal handler gets a Cairo context as an argument.
Convert Gtk::DrawingArea rendering code to respond to the
GtkWidget::draw signal.
This commit is specific to the drawing area contained in the main
application window (also called the DrawingAreaVisualDisk).
Reference:
[1] Migrating from GTK+ 2.x to GTK+ 3 - "The GtkWidget::draw signal":
https://developer.gnome.org/gtk3/stable/ch26s02.html#id-1.6.3.4.11Closes#7 - Port to Gtk3
In Gtk2 widgets draw themselves in response to the expose event signal.
In Gtk3 widgets draw themselves in response to the GtkWidget::draw
signal, and the signal handler gets a Cairo context as an argument.
Convert Gtk::DrawingArea rendering code to respond to the
GtkWidget::draw signal.
This commit is specific to the drawing area in the Partition Info
dialog.
Reference:
[1] Migrating from GTK+ 2.x to GTK+ 3 - "The GtkWidget::draw signal":
https://developer.gnome.org/gtk3/stable/ch26s02.html#id-1.6.3.4.11Closes#7 - Port to Gtk3
Starting from Gtkmm3 Gdk::Cursor objects cannot be constructed directly,
but instead you have to get a smart pointer to an instance by calling
the static member function Gdk::Cursor::create().
Gdk::Cursor::create() returns a Glib::RefPtr<Gdk::Cursor> object.
Gtkmm3 always uses Glib::RefPtr<Gdk::Cursor> in its interface and never
plain Gdk::Cursor.
Reference:
[1] Programming with gtkmm3, Changes in gtkmm3:
https://developer.gnome.org/gtkmm-tutorial/3.24/changes-gtkmm3.html.en
"... Gdk::Cursor are now used via Glib::RefPtr."
Closes#7 - Port to Gtk3
Now that we are compiling against Gtkmm3 there are missing declarations
of Gtkmm identifiers due to changes in Gtkmm internal header structure.
All we have to do is bring back the declarations by including the
appropriate headers where needed.
Add necessary Gtkmm header includes.
Closes#7 - Port to Gtk3
Now that we are compiling against Gtkmm3 there are missing declarations
of Glibmm identifiers due to changes in Gtkmm internal header structure.
All we have to do is bring back the declarations by including the
appropriate headers where needed.
Add necessary Glibmm header includes.
Closes#7 - Port to Gtk3
GParted uses Gtk::Menu_Helpers::MenuList helper class to access
individual menu items. This helper class made it easy to navigate menu
items by index.
Gtk::Menu_Helpers::MenuList was removed in the switch from Gtkmm2 to
Gtkmm3 [1]. Instead, use a separate std::map<Gtk::MenuItem*> to keep
track of individual Gtk::MenuItem objects.
Reference:
[1] Gtkmm 3 commit "MenuShell: Remove items()." removed the code
c8e47b0db5Closes#7 - Port to Gtk3
Gtk::Menu_Helpers::Element class and subclasses help in Gtk::MenuItem
widgets and also automate tasks like registering keyboard accelerators
when parented to a top-level window [1][2].
Gtk::Menu_Helpers::Element class and subclasses were removed in Gtkmm3
[3]. Provide compatible implementations under the namespace
GParted::Menu_Helpers.
References:
[1] gtkmm: Gtk::Menu_Helpers Namespace Reference
https://developer.gnome.org/gtkmm/2.24/namespaceGtk_1_1Menu__Helpers.html
[2] gtkmm: Gtk::Menu_Helpers::Element Class Reference
https://developer.gnome.org/gtkmm/2.24/classGtk_1_1Menu__Helpers_1_1Element.html
[3] Gtkmm 3 commit "MenuShell: Remove items()." removed the code
c8e47b0db5Closes#7 - Port to Gtk3
All the other modules are in the GParted namespace, except for main()
which has to be in the global namespace, so put these in the GParted
namespace too.
Closes!20 - Minor namespace and scope operator tidy-ups
Create an active Linux Software RAID member which is larger than /dev
virtual file system and GParted will report the usage figure of the /dev
virtual file system for the SWRAID member.
# df -h /dev
Filesystem Size Used Avail Use% Mounted on
devtmpfs 732M 0 732M 0% /dev
# sgdisk -n 1:1M:+1G /dev/sdb
# mdadm --create --verbose /dev/md1 --level=linear --raid-devices=1 --force /dev/sdb1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md1 started.
GParted reports the usage of /dev/sdb1 as:
Partition Mount Point Size Used Unused Unallocated
/dev/sdb1 /dev/md1 1.00GiB 0.00B 731.04MiB 292.96MiB
However GParted should have reported the usage as "---" for unknown
because it isn't coded to query the size of the SWRAID member within a
partition.
The fault has been bisected to this commit:
Extend un/mounting and usage reporting to unsupported file systems (!13)
95903efb1f
What happens for busy Linux Software RAID array members:
* GParted_Core::is_busy()
has custom code to identify busy members.
* GParted_Core::set_mountpoints()
has custom code to add the array device name as the "mount point" of
the member.
* GParted_Core::set_used_sectors()
falls into the else not a supported file system (because SWRAID
doesn't have a derived FileSystem implementation class).
* GParted_Core::mounted_set_used_sectors()
is called to get the file system usage of mounted, but unsupported
file systems, such as UFS and any others.
* Utils::get_mounted_filesystem_usage()
is called which queries the kernel using statvfs() and gets the file
system usage of the /dev virtual file system because the array
device name will always start /dev.
Fix by ensuring that GParted only asks the kernel for the usage of paths
which it knows are mount points of mounted file systems. (As read from
/proc/mounts and cached in the Mount_Info module). Also rename the
method, by inserting "_fs", to mounted_fs_set_used_sectors() to remind
us that it is for mounted *file systems* only.
Closes#27 - GParted may report incorrect usage for SWRAID partitions
instead of unknown
S
Third commit in a series to convert Gdk::GC based drawing to Cairo based
drawing. This specific commit makes the transition for the graphical
partition visualizer widget that is used in the main application window.
Closed!17 - Gtk2 modernisation
Second commit in a series to convert Gdk::GC based drawing to Cairo
based drawing. This specific commit makes the transition for the
graphical partition info widget that is used in the "Information about"
dialog.
Closes!17 - Gtk2 modernisation
C++ initialises static member variables before main() is called.
Therefore the static members of:
struct Slots
{
static Gtk::TreeModelColumn<Glib::ustring> text;
static Gtk::TreeModelColumn<bool> sensitive;
private:
static Gtk::TreeModel::ColumnRecord record_;
};
are constructed before Gtk::Main() is called in main(). However the
Gtkmm documentation specifically says that they must be constructed
afterwards [1].
Resolve this by using the Construct On First Use Idiom [2] to delay
initialisation until the slots are first used. Normally this idiom uses
static local objects, however it is being applied to class static
objects here because the objects are accessed in many methods. The
downside of this approach is that the objects are never destructed,
which memory analysers like Valgrind could see as a memory leak, but
that is actually deliberate. That leak can be removed once we can use
C++11 and std::unique_ptr.
[1] gtkmm: Gtk::TreeModelColumnRecord Class Reference
https://developer.gnome.org/gtkmm/2.24/classGtk_1_1TreeModelColumnRecord.html#details
"Neither TreeModel::ColumnRecord nor the TreeModelColumns contain
any real data - they merely describe what C++ type is stored in
which column of a TreeModel, and save you from having to repeat that
type information in several places.
Thus TreeModel::ColumnRecord can be made a singleton (as long as you
make sure it's instantiated after Gtk::Main), even when creating
multiple models from it.
"
[2] C++ FAQ / How do I prevent the "static initialization order
problem"?
https://isocpp.org/wiki/faq/ctors#static-init-order-on-first-useCloses!17 - Gtk2 modernisation
Final part in a series of commits to replace Gtk::OptionMenu widgets
with GParted::OptionComboBox.
This specific commit renames the signal handler callback to match the
previously renamed combobox widget variable names.
Closes!17 - Gtk2 modernisation
Third part in a series of commits to replace Gtk::OptionMenu widgets
with GParted::OptionComboBox.
This specific commit is about file system combobox.
Closes!17 - Gtk2 modernisation
Second part in a series of commits to replace Gtk::OptionMenu widgets
with GParted::OptionComboBox.
This specific commit is about partition type combobox.
Closes!17 - Gtk2 modernisation
First part in a series of commits to replace Gtk::OptionMenu widgets
with GParted::OptionComboBox.
This specific commit is about partition alignment combobox.
Closes!17 - Gtk2 modernisation
Just add detection of APFS using GParted's internal magic string
detection. It just matches 1 byte of the 2 byte object type and the
4 byte magic field found in the super block [1]. See code comment for
more details.
Blkid has just gained recognition of APFS with util-linux v2.33 released
06-Nov-2018 [2].
This will write enough for GParted's simple internal detection to find
APFS:
# python -c '
import sys
sys.stdout.write("\0"*24 + "\1\0" + "\0"*6 + "NXSB")
' > /dev/sdb1
[1] Apple File System Reference
https://developer.apple.com/support/apple-file-system/Apple-File-System-Reference.pdf
[2] [ANNOUNCE] util-linux v2.33
https://marc.info/?l=linux-fsdevel&m=154150400305928&w=2Closes#23 - GParted doesn't detect APFS (Apple File System)
Resizing a file system mounted read-only fails. Example:
# mkfs.btrfs /dev/sdb1
# mount -o ro /dev/sdb1 /mnt/1
In GParted try to resize partition sdb1. The operation fails like this:
Grow /dev/sdb1 from 512.00 MiB to 1.00 GiB (ERROR)
* calibrate /dev/sdb1 (SUCCESS)
* grow partition from 512.00 MiB to 1.00 GiB (SUCCESS)
* grow filesystem to fill the partition (ERROR)
* btrfs filesystem resize 1:max '/mnt/1' (ERROR)
Resize '/mnt/1' of '1:max'
ERROR: unable to resize '/mnt/1': Read-only file system
See GitLab issue for the testing results of attempting to online resize
all supporting file system while mounted read-only. No file system
allows online resizing while mounted read-only, except for reiserfs.
Issue #10 - Gparted fails to resize btrfs partition that is mounted
read-only
https://gitlab.gnome.org/GNOME/gparted/issues/10
Fix by preventing online resizing of *all* file systems mounted
read-only, including reiserfs. Instead of displaying the resize dialog
in this case, display an information dialog explaining why the partition
can't be resized. This is similar to what happens when attempting to
create a new partition on a disk without a partition table. The new
dialog looks like:
(!) Unable to resize read-only file system /dev/sdb1
The file system can not be resized while it is mounted read-only.
Either unmount the file system or remount it read-write.
[ OK ]
Closes#10 - Gparted fails to resize btrfs partition that is mounted
read-only
Set the partition read-only mount flag at the same time as setting the
file system mount points.
Closes#10 - Gparted fails to resize btrfs partition that is mounted
read-only
Parse file system mount options string from file and mount command
output, extracting the setting for the read-only flag and storing in the
mount maps. Read-only flag for swap space gets the struct MountEntry
constructor default of false.
Closes#10 - Gparted fails to resize btrfs partition that is mounted
read-only
Just updates the 2 maps in the Mount_Info module so that they also have
a read-only flag for each mount. Ensure that when a struct MountEntry
is created the readonly bool POD (Plain Old Data) type is initialised by
the constructor. Nothing yet sets or uses the flag.
Closes#10 - Gparted fails to resize btrfs partition that is mounted
read-only
The function was using std::map::count() [1] to test if the file system
entry existed in the map before looking up the value using
std::map::operator[] to avoid having operator[] inserting elements which
don't exist [2].
Rewrite using std::map::find() [3] so that map is only searched once,
and so that it is more obvious what is happening without having to know
the subtleties of std::map::count() and ::operator[].
[1] std::map::count()
http://www.cplusplus.com/reference/map/map/count/
"Searches the container for elements with a key equivalent to k and
returns the number of matches.
Because all elements in a map container are unique, the function can
only return 1 (if the element is found) or zero (otherwise).
"
[2] std::map::operator[]
http://www.cplusplus.com/reference/map/map/operator[]/
"If k does not match the key of any element in the container, the
function inserts a new element with that key and returns a reference
to its mapped value. Notice that this always increases the
container size by one, even if no mapped value is assigned to the
element (the element is constructed using its default constructor).
"
[3] std::map::find
http://www.cplusplus.com/reference/map/map/find/
"Searches the container for an element with a key equivalent to k
and returns an iterator to it if found, otherwise it returns an
iterator to map::end.
"
There is no prospect of there being ufs-tools on Linux. The was a
project which did release ufs-tools version 0.1 in 2004, but has been
inactive since then.
http://ufs-linux.sourceforge.net/
Copying and moving is now implemented for file systems in the basic
supported category. Also mounting and unmounting of unsupported file
system and reporting their usage while mounted has been added. This is
all the support that GParted has ever implemented for UFS. Therefore
re-assign UFS as a basic supported file system as it looses no
functionality.
Closes!13 - Support copying and moving of unsupported partition content
Want a single term under which the supported actions for all basic
supported file systems are displayed in the File System Support dialog.
"Unknown" isn't the correct adjective because the group includes
unknown, but also includes: BitLocker, GRUB2 core image, ISO9660, Linux
SWRaid, Linux Suspend, REFS and ZFS. Add "other" file system type just
for displaying in the dialog.
Closes!13 - Support copying and moving of unsupported partition content
Introduce a third category of basic file system support to go along with
the existing full and none. Use the file system's entry in
FILESYSTEM_MAP to determine the level of support. See comment in
GParted_Core::init_filesystems() for details.
Add and remove FILESYSTEM_MAP NULL pointer entries as required, so that
only the file system types intended to have basic support have such
entries.
Closes!13 - Support copying and moving of unsupported partition content
PATCHSET OVERVIEW:
Forum user wanted to be able to move a partition with unknown content:
Topic: Can't move/rezise partition on android device (unknown format)
http://gparted-forum.surf4.info/viewtopic.php?id=17742
While GParted isn't going to be able to run any sort of file system
check on the unknown content there isn't any reason why such a partition
can't be copied or moved so long as the partition stays the same size.
GParted can just use it's existing internal block copy routine it uses
for copying and moving most partition content. This is no different to
a few of the already supported file system types which don't have a
check-repair tool: exfat, f2fs, nilfs2, udf, ufs.
This patchset introduces a third category called basic file system
support to go along with the existing full and unsupported categories.
Basic supported file systems will just use GParted's inbuilt
capabilities to perform actions so they won't need a derived FileSystem
implementation class. Unknown file systems along with all other
recognised, but otherwise unsupported, file systems will be assigned to
this new basic supported category.
THIS PATCH:
FS_UNKNOWN is used when GParted is unable to identify the contents of a
partition. FS_UNKNOWN is also used to generate a file system support
set with no supported actions, in the FileSystem::FS::FS() constructor
and in GParted_Core::get_fs().
As support for operations on partitions with unknown content is being
added, the second usage will be confusing or even wrong.
FS( FS_UNKNOWN ) constructs the no supported actions set, yet GParted
will support some actions for the FS_UNKNOWN file system type.
Therefore add FS_UNSUPPORTED for the second usage.
Closes!13 - Support copying and moving of unsupported partition content
Util-linux package, at least as far back as version 2.23.2 as found on
CentOS 7, provides the mkfs.minix and fsck.minix commands. Also blkid
from the same package, recognises minix file systems.
Create version 3 file systems because MINIX 3 [1] is the only supported
version and that reportedly uses version 3 of the file system [2].
[1] MINIX 3 / History
https://en.wikipedia.org/wiki/MINIX_3#History
[2] Regarding MINIX 3 file system
https://groups.google.com/forum/#!topic/minix3/3-TeHR_23X8
"MINIX 3 uses Minix File System (MFS). More precisely MFS V3."
Closes!12 - Add minix file system support
Usage of members label_device_info1 and label_device_info2 was removed
in this commit from 2004.
8ae5ebb2e6
several (mostly) i18n related fixes/cleanups
The CUSTOM_TEXT enumeration is exclusively used as the type of one of
the parameters to the functions get_generic_text() and get_custom_text()
in the FileSystem class and derived classes. The definition of the
enumeration therefore belongs in FileSystem.h. Move it.
After a failed LUKS unlock attempt the password entry dialog shows the
error "Failed to open LUKS encryption". Improve the user experience by
clearing that error message at the start of the next attempt to avoid
contradictory information with the main windows status of "Opening
encryption on $PARTITION" whilst performing the next unlock attempt.
Bug 795617 - Implement opening and closing of LUKS mappings
The Change_UUID_Warning vectors were fat16 and ntfs class member
variables, but are only ever accessed in the get_custom_text() method.
Make them local variables in get_custom_text() instead. Static so that
references to them can be returned.
Same case as for FileSystem Label dialog before; the Partition Name
dialog only has a single line of just 2 widgets. Therefore switch to a
simpler horizontal box widget to lay them out.
The FileSystem Label dialog only has a single line of just 2 widgets; a
text label and entry box widget. There is no need to use a multi-line
capable table to hold this. Switch to a simpler horizontal box widget.
Note that this change is not related to porting to Gtk 3 and stopping
using deprecated APIs because both HBox [1] and Table [2] are deprecated
in Gtk 3.2 and Gtk 3.4 and replaced by Box with horizontal orientation
and Grid respectively.
[1] NEWS file from gtkmm 3.2, actually first released in gtkmm 3.1.6
(unstable):
https://git.gnome.org/browse/gtkmm/tree/NEWS?h=3.2.0#n91
"Gtk:
* All H* or V* specialized classes have been deprecated, to
match the deprecations in the GTK+ C API. You should now
set the orientation instead.
This includes HBox, VBox, HButtonBox, VButtonBox, HPaned,
VPaned, HScale, VScale, HSeparator, VSeparator, HScrollbar
and VScrollbar."
[2] NEWS file from gtkmm 3.4, actually first released in gtkmm 3.3.2
(unstable):
https://git.gnome.org/browse/gtkmm/tree/NEWS?h=3.4.0#n162
"* Deprecate Gtk::Table in favour of Gtk::Grid."
Replace return by value of const strings from
FileSystem::get_custom_text() and get_generic_text() because that
implies duplication of those strings. Return a reference to constant
strings instead.
Replace the insert() method (which reports an error when inserting a
password with a key which already exists) with the store() method which
replaces or inserts the password depending on whether the key already
exists or not respectively. There is also an optimisation that nothing
is changed if the password to be replaced is the same as the one already
stored. The code in Win_GParted::open_encrypted_partition() is
simplified now it doesn't have to implement this pattern of behaviour
itself.
Bug 795617 - Implement opening and closing of LUKS mappings
Reports generic GParted error "Failed to open LUKS encryption" on any
failure unlocking the partition. Choosing not to display cryptsetup
reported errors because those messages and their translations are not
under GParted control.
Bug 795617 - Implement opening and closing of LUKS mappings
The underlying C coded Gtk Entry widget is careful to zero memory after
use, allowing the widget to be safely used for password entry [1].
However the C++ method Gtk::Entry::get_text() just takes the underlying
C string from the Gtk Entry widget and copies it when constructing a
Glib::ustring for the return value [2].
So directly use the Gtk/C API to get the C string instead.
[1] https://git.gnome.org/browse/gtk+/tree/gtk/gtkentrybuffer.c?h=3.22.28#n92
See function trash_area() which zeros memory and its use in
gtk_entry_buffer_normal_insert_text(),
gtk_entry_buffer_normal_delete_text() and
gtk_entry_buffer_finalize().
[2] https://git.gnome.org/browse/gtkmm/tree/gtk/src/entry.hg?h=3.22.2#n104
_WRAP_METHOD(Glib::ustring get_text() const, gtk_entry_get_text)
https://git.gnome.org/browse/glibmm/tree/docs/internal/using_gmmproc.txt?h=2.46.1#n53
_WRAP_METHOD(Glib::ustring METHOD const, FUNC) is processed to:
Glib::ustring METHOD() const
{
return Glib::convert_const_gchar_ptr_to_ustring(
FUNC(const_cast<GtkEntry*>(gobj())));
}
https://git.gnome.org/browse/glibmm/tree/glib/glibmm/utility.h?h=2.46.1#n82
Glib::ustring convert_const_gchar_ptr_to_ustring(const char* str)
{
return (str) ? Glib::ustring(str) : Glib::ustring();
}
So Gtk::Entry::get_text() calls Glib::ustring() constructor which
copies the C string to create the Glib::ustring object returned.
Bug 795617 - Implement opening and closing of LUKS mappings
To keep password dialog open, just keep running it in a loop performing
LUKS mapping unlock attempts with the entered passphrase until it
succeeds or the dialog is cancelled or closed. This is the same model
that is already used for the File Support System dialog and how the
[Rescan For Supported Actions] button is implemented.
Also any error from attempting to open the LUKS mapping is no longer
displayed in a separate error dialog or at all. Will add some sort of
error reporting into the password entry dialog in a following commit.
Creates new method Win_GParted::open_encrypted_partition() which handles
the non UI parts of attempting to open an encrypted partition. Running
"cryptsetup luksOpen" and updating the stored passphrase as needed.
Bug 795617 - Implement opening and closing of LUKS mappings
Initial addition of a password entry dialog. Looks like:
+------------------------------------------------+
| LUKS Passphrase /dev/sdb1 |
+------------------------------------------------+
| Enter LUKS passphrase to open /dev/sdb1 |
| Passphrase: [ ] |
| |
| [ Cancel ] [ Unlock ] |
+------------------------------------------------+
A standard Gtk Dialog is used to accept the password once, with any
errors displayed in a separate error dialog afterwards. This is poor UI
design. A password dialog should remain open for all authentication
attempts and only close when successful or the dialog is cancelled or
closed. This UI design issue will be improved in following commits.
Bug 795617 - Implement opening and closing of LUKS mappings
Add new item to the partition menu to allow the user to open and close
the LUKS mapping. However for now the menu item is always disabled and
there is no implementation behind it to actually open or close the LUKS
mapping. Fragment of the partition menu is now:
...
Format to >
-----------------
Open Encryption <- New menu item
Mount
-----------------
Name Partition
...
Has to be two separate menu items to clearly represent to the user that
LUKS mappings and file system mounting are two separate busy states.
And also in the case of an open but unmounted file system to offer both
actions; close encryption and mount file system.
The text of the menu item automatically changes similarly to how it does
for the Mount/Unmount, Swapon/Swapoff, Activate/Deactivate item
depending on the state of the LUKS mapping. For open LUKS mappings it
will show "Close Encryption" and for all other cases (closed LUKS
mapping or partition is not encrypted) "Open Encryption". Again similar
to how the default of "Mount" is shown for unallocated and unknown
partitions.
Bug 795617 - Implement opening and closing of LUKS mappings
In preparation for adding the ability to toggle the encryption busy
state (open/close the encryption volume), rename existing members to
reflect that they are related to changing the file system state. (Swap
and LVM2 Physical Volumes are handled as file systems by GParted).
class Win_GParted renaming:
MENU_TOGGLE_BUSY -> MENU_TOGGLE_FS_BUSY
allow_toggle_busy_state() -> allow_toggle_fs_busy_state()
toggle_busy_state() -> toggle_fs_busy_state()
check_toggle_busy_allowed() -> check_toggle_fs_busy_allowed()
Bug 795617 - Implement opening and closing of LUKS mappings
As discussed in "LUKS password handling, threats and preventative
measures" [1] GParted must be able to pass LUKS passphrases to
cryptsetup via standard input to avoid having to write passwords to the
file system and deal with additional security requirements. Therefore
add a way to write input into created child processes. For small
amounts of input, writing up to the pipe buffer capacity won't block
[2]. This is 64K on versions of Linux in any currently supported
distributions.
[1] LUKS password handling, threats and preventative measures
https://bugzilla.gnome.org/show_bug.cgi?id=627701#c56
GParted must not become a password manage so it must never save
LUKS passwords to disk across separate invocations of GParted.
...
GParted should avoid writing a temporary file containing the LUKS
password as it introduces extra complexity with trying to safely
handle and erase file content. Instead GParted must
programmatically pass the LUKS password via standard input to the
cryptsetup command.
[2] pipe(7) manual page:
Pipe capacity
A pipe has a limited capacity. If the pipe is full, then a
write(2) will block or fail, depending on whether the O_NONBLOCK
flag is set (see below). ...
In Linux versions before 2.6.11, the capacity of a pipe was the
same as the system page size (e.g., 4096 bytes on i386). Since
Linux 2.6.11, the pipe capacity is 65536 bytes.
Bug 795617 - Implement opening and closing of LUKS mappings
Use private access into the PasswordRAMStore class to directly obtain
the address of the locked memory, rather than inferring it from the
address of the first stored password. This simplifies
PasswordRAMStoreTest::SetUpTestCase() and avoids encoding most of the
implementation knowledge that the first password will be stored at the
start of the protected memory.
Bug 795617 - Implement opening and closing of LUKS mappings
Luca Bacci