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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "PreAllocationDiskWriter.h"
#include "DlAbortEx.h"
#include "message.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
PreAllocationDiskWriter::PreAllocationDiskWriter(uint64_t totalLength)
:AbstractDiskWriter(totalLength) {}
PreAllocationDiskWriter::~PreAllocationDiskWriter() {}
void PreAllocationDiskWriter::initAndOpenFile(const string& filename)
{
createFile(filename);
int bufSize = 4096;
char buf[4096];
memset(buf, 0, bufSize);
long long int x = totalLength/bufSize;
int r = totalLength%bufSize;
for(long long int i = 0; i < x; i++) {
if(write(fd, buf, bufSize) < 0) {
throw new DlAbortEx(EX_FILE_WRITE, filename.c_str(), strerror(errno));
}
}
if(r > 0) {
seek(totalLength-r);
if(write(fd, buf, r) < 0) {
throw new DlAbortEx(EX_FILE_WRITE, filename.c_str(), strerror(errno));
}
}
}
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