/* Writes the sectors to a file descriptor
* Returns the amount of bytes written, or -1 on error
*/
ssize_t ewf_error2_sectors_write( EWF_ERROR2_SECTOR *sectors, int file_descriptor, uint32_t amount )
{
EWF_CRC crc = 0;
ssize_t count = 0;
ssize_t crc_count = 0;
size_t size = EWF_ERROR2_SECTOR_SIZE * amount;
if( sectors == NULL )
{
LIBEWF_WARNING_PRINT( "ewf_error2_sectors_write: invalid sectors.\n" );
return( -1 );
}
if( size > (size_t) SSIZE_MAX )
{
LIBEWF_WARNING_PRINT( "ewf_error2_sectors_write: invalid amount exceeds maximum.\n" );
return( -1 );
}
count = libewf_common_write( file_descriptor, sectors, size );
if( count < (ssize_t) size )
{
LIBEWF_WARNING_PRINT( "ewf_error2_sectors_write: unable write error2 sectors.\n" );
return( -1 );
}
if( ewf_crc_calculate( &crc, (uint8_t *) sectors, size, 1 ) != 1 )
{
LIBEWF_WARNING_PRINT( "ewf_error2_sectors_write: unable to calculate CRC.\n" );
return( -1 );
}
crc_count = ewf_crc_write( &crc, file_descriptor );
if( crc_count == -1 )
{
LIBEWF_WARNING_PRINT( "ewf_error2_sectors_write: unable to write CRC.\n" );
return( -1 );
}
return( count + crc_count );
}
/* Writes the offsets to a file descriptor
* Returns a -1 on error, the amount of bytes written on success
*/
ssize_t ewf_table_offsets_write( EWF_TABLE_OFFSET *offsets, int file_descriptor, uint32_t amount )
{
EWF_CRC crc;
ssize_t count;
ssize_t crc_count;
size_t size = EWF_TABLE_OFFSET_SIZE * amount;
if( offsets == NULL )
{
LIBEWF_VERBOSE_PRINT( "ewf_table_offsets_write: invalid offsets.\n" );
return( -1 );
}
count = write( file_descriptor, offsets, size );
if( count < size )
{
return( -1 );
}
crc = ewf_crc( offsets, size, 1 );
crc_count = ewf_crc_write( crc, file_descriptor );
return( count + crc_count );
}
