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fillbook.cc
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fillbook.cc
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/* GNU ddrescue - Data recovery tool
Copyright (C) 2004-2019 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _FILE_OFFSET_BITS 64
#include <algorithm>
#include <cerrno>
#include <climits>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <string>
#include <vector>
#include <stdint.h>
#include <unistd.h>
#include "block.h"
#include "mapbook.h"
// Return values: 1 write error, 0 OK.
//
int Fillbook::fill_block( const Sblock & sb )
{
if( sb.size() <= 0 || sb.size() > softbs() )
internal_error( "bad size filling a Block." );
const int size = sb.size();
if( write_location_data ) // write location data into each sector
for( long long pos = sb.pos(); pos < sb.end(); pos += hardbs() )
{
char * const buf = (char *)iobuf() + ( pos - sb.pos() );
const int bufsize = std::min( 80LL, sb.end() - pos );
const int len = snprintf( buf, bufsize,
"\n# position 0x%08llX sector 0x%08llX status %c",
pos, pos / hardbs(), sb.status() );
if( len > 0 && len < bufsize ) buf[len] = ' ';
}
if( writeblockp( odes_, iobuf(), size, sb.pos() + offset() ) != size ||
( synchronous_ && fsync( odes_ ) != 0 && errno != EINVAL ) )
{
if( !ignore_write_errors ) final_msg( "Write error", errno );
return 1;
}
filled_size += size; remaining_size -= size;
return 0;
}
// Return values: 1 write error, 0 OK, -1 interrupted, -2 mapfile error.
//
int Fillbook::fill_areas()
{
const char * const msg = "Filling blocks...";
bool first_post = true;
for( long index = 0; index < sblocks(); ++index )
{
const Sblock & sb = sblock( index );
if( !domain().includes( sb ) ) { if( domain() < sb ) break; else continue; }
if( sb.end() <= current_pos() ||
filltypes.find( sb.status() ) >= filltypes.size() ) continue;
Block b( sb.pos(), softbs() ); // fill the area a softbs at a time
if( sb.includes( current_pos() ) ) b.pos( current_pos() );
if( b.end() > sb.end() ) b.crop( sb );
current_status( filling, msg );
while( b.size() > 0 )
{
current_pos( b.pos() );
if( verbosity >= 0 )
{ show_status( b.pos(), msg, first_post ); first_post = false; }
if( interrupted() ) return -1;
const int retval = fill_block( Sblock( b, sb.status() ) );
if( retval ) // write error
{
if( !ignore_write_errors ) return retval;
if( b.size() > hardbs() ) // fill the area a hardbs at a time
{ b.size( hardbs() ); continue; }
}
if( !update_mapfile( odes_ ) ) return -2;
b.pos( b.end() );
if( b.end() > sb.end() ) b.crop( sb );
}
++filled_areas; --remaining_areas;
}
return 0;
}
void Fillbook::show_status( const long long ipos, const char * const msg,
bool force )
{
const char * const up = "\x1B[A";
if( t0 == 0 )
{
t0 = t1 = initial_time();
first_size = last_size = filled_size;
force = true;
std::fputs( "\n\n\n", stdout );
}
if( ipos >= 0 ) last_ipos = ipos;
const long t2 = std::time( 0 );
if( t2 < t1 ) // clock jumped back
{
t0 -= std::min( t0, t1 - t2 );
t1 = t2;
}
if( t2 > t1 || force )
{
if( t2 > t1 )
{
a_rate = ( filled_size - first_size ) / ( t2 - t0 );
c_rate = ( filled_size - last_size ) / ( t2 - t1 );
t1 = t2;
last_size = filled_size;
}
std::printf( "\r%s%s%s", up, up, up );
std::printf( "filled size: %9sB, filled areas: %6lu, current rate: %8sB/s\n",
format_num( filled_size ), filled_areas,
format_num( c_rate, 99999 ) );
std::printf( "remain size: %9sB, remain areas: %6lu, average rate: %8sB/s\n",
format_num( remaining_size ), remaining_areas,
format_num( a_rate, 99999 ) );
std::printf( "current pos: %9sB, run time: %11s\n",
format_num( last_ipos + offset() ), format_time( t1 - t0 ) );
if( msg && msg[0] )
{
const int len = std::strlen( msg ); std::printf( "\r%s", msg );
for( int i = len; i < oldlen; ++i ) std::fputc( ' ', stdout );
oldlen = len;
}
std::fflush( stdout );
}
}
// Return values: 1 write error, 0 OK.
//
int Fillbook::do_fill( const int odes )
{
filled_size = 0, remaining_size = 0;
filled_areas = 0, remaining_areas = 0;
odes_ = odes;
if( current_status() != filling || !domain().includes( current_pos() ) )
current_pos( 0 );
for( long i = 0; i < sblocks(); ++i )
{
const Sblock & sb = sblock( i );
if( !domain().includes( sb ) ) { if( domain() < sb ) break; else continue; }
if( filltypes.find( sb.status() ) >= filltypes.size() ) continue;
if( sb.end() <= current_pos() ) { ++filled_areas; filled_size += sb.size(); }
else if( sb.includes( current_pos() ) )
{
filled_size += current_pos() - sb.pos();
++remaining_areas; remaining_size += sb.end() - current_pos();
}
else { ++remaining_areas; remaining_size += sb.size(); }
}
set_signals();
if( verbosity >= 0 )
{
std::fputs( "Press Ctrl-C to interrupt\n", stdout );
if( mapfile_exists() )
{
std::fputs( "Initial status (read from mapfile)\n", stdout );
std::printf( "filled size: %9sB, filled areas: %7lu\n",
format_num( filled_size ), filled_areas );
std::printf( "remaining size: %9sB, remaining areas: %7lu\n",
format_num( remaining_size ), remaining_areas );
std::fputs( "Current status\n", stdout );
}
}
int retval = fill_areas();
const bool signaled = ( retval == -1 );
if( signaled ) retval = 0;
if( verbosity >= 0 )
{
show_status( -1, ( retval || signaled ) ? 0 : "Finished", true );
if( retval == -2 ) std::fputs( "\nMapfile error", stdout );
else if( signaled ) std::fputs( "\nInterrupted by user", stdout );
std::fputc( '\n', stdout );
std::fflush( stdout );
}
if( retval == -2 ) retval = 1; // mapfile error
else
{
if( retval == 0 && !signaled ) current_status( finished );
compact_sblock_vector();
if( !update_mapfile( odes_, true ) && retval == 0 ) retval = 1;
}
if( final_msg().size() ) show_error( final_msg().c_str(), final_errno() );
if( close( odes_ ) != 0 )
{ show_error( "Error closing outfile", errno );
if( retval == 0 ) retval = 1; }
if( retval ) return retval; // errors have priority over signals
if( signaled ) return signaled_exit();
return 0;
}
bool Fillbook::read_buffer( const int ides )
{
const int rd = readblock( ides, iobuf(), softbs() );
if( rd <= 0 || errno != 0 ) return false;
for( int i = rd; i < softbs(); i *= 2 )
{
const int size = std::min( i, softbs() - i );
std::memcpy( iobuf() + i, iobuf(), size );
}
return true;
}