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/*
* s3fs - FUSE-based file system backed by Amazon S3
*
* Copyright(C) 2021 Andrew Gaul <andrew@gaul.org>
*
* 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.
*/
// Generate junk data at high speed. An alternative to dd if=/dev/urandom.
#include <cstdint>
#include <cstdio>
#include <cstdlib>
int main(int argc, const char *argv[])
{
if (argc != 2) {
return 1;
}
uint64_t count = strtoull(argv[1], nullptr, 10);
char buf[128 * 1024];
for (uint64_t i = 0; i < count; i += sizeof(buf)) {
for (uint64_t j = 0; j < sizeof(buf) / sizeof(i); ++j) {
*(reinterpret_cast<uint64_t *>(buf) + j) = i / sizeof(i) + j;
}
fwrite(buf, 1, sizeof(buf) > count - i ? count - i : sizeof(buf), stdout);
}
return 0;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: expandtab sw=4 ts=4 fdm=marker
* vim<600: expandtab sw=4 ts=4
*/
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