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Add Partition object resizing method Partition*::resize() (#774818)

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Add a resize() method to both Partition and PartitionLUKS classes.  They
take a reference Partition object, and update the position, size and
file system usage of *this Partition to match.  This is ready for taking
a partition returned from Resize/Move dialog and applying the change.

Bug 774818 - Implement LUKS read-write actions NOT requiring a
             passphrase
This commit is contained in:
Mike Fleetwood 2016-12-04 20:44:46 +00:00 committed by Curtis Gedak
parent 30a0f4506c
commit 08e4ba4eca
4 changed files with 30 additions and 0 deletions
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1
include/Partition.h
View file

@ -90,6 +90,7 @@ public:
virtual Sector get_sectors_unused() const;
virtual Sector get_sectors_unallocated() const;
void get_usage_triple( int imax, int & i1, int & i2, int & i3 ) const ;
virtual void resize( const Partition & new_size );
void Set_Unallocated( const Glib::ustring & device_path,
bool whole_device,

1
include/PartitionLUKS.h
View file

@ -49,6 +49,7 @@ public:
virtual Sector get_sectors_used() const;
virtual Sector get_sectors_unused() const;
virtual Sector get_sectors_unallocated() const;
virtual void resize( const Partition & new_size );
virtual bool have_messages() const;
virtual std::vector<Glib::ustring> get_messages() const;
virtual void clear_messages();

14
src/Partition.cc
View file

@ -163,6 +163,20 @@ Sector Partition::get_sectors_unallocated() const
return sectors_unallocated ;
}
// Update size, position and FS usage from new_size.
void Partition::resize( const Partition & new_size )
{
sector_start = new_size.sector_start;
sector_end = new_size.sector_end;
alignment = new_size.alignment;
free_space_before = new_size.free_space_before;
strict_start = new_size.strict_start;
Sector fs_size = new_size.sectors_used + new_size.sectors_unused;
Sector fs_unused = fs_size - new_size.sectors_used;
set_sector_usage( fs_size, fs_unused );
}
void Partition::Set_Unallocated( const Glib::ustring & device_path,
bool whole_device,
Sector sector_start,

14
src/PartitionLUKS.cc
View file

@ -196,6 +196,20 @@ Sector PartitionLUKS::get_sectors_unallocated() const
return Partition::get_sectors_unallocated();
}
// Update size, position and FS usage from new_size.
void PartitionLUKS::resize( const Partition & new_size )
{
Partition::resize( new_size );
// As per discussion in luks::set_used_sectors() LUKS itself is always 100% used.
set_sector_usage( get_sector_length(), 0LL );
Sector mapping_size = get_sector_length() - header_size;
encrypted.sector_end = mapping_size - 1LL;
Sector fs_unused = mapping_size - encrypted.sectors_used;
encrypted.set_sector_usage( mapping_size, fs_unused );
}
bool PartitionLUKS::have_messages() const
{
if ( busy )