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/*
Copyright (C) 2012 - 2015 Andreas Baumann <mail@andreasbaumann.cc>
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 3 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/>.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
int main( void )
{
char buf[4096];
int fd;
ssize_t res;
memset( buf, 1, 4096 );
fd = open( "./mnt/testbigfile.data", O_WRONLY | O_CREAT,
S_IRUSR | S_IWUSR );
if( fd < 0 ) {
perror( "Unable to open testfile" );
return 1;
}
res = write( fd, buf, 4096 );
if( res != 4096 ) {
perror( "Error writing" );
(void)close( fd );
return 1;
}
res = lseek( fd, 409600 /* 4294967296 */, SEEK_SET );
if( res < 0 ) {
perror( "Unable to seek in testfile" );
return 1;
}
res = write( fd, buf, 4096 );
if( res != 4096 ) {
perror( "Error writing" );
(void)close( fd );
return 1;
}
(void)close( fd );
return 0;
}
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