File: [Development] / xfs-cmds / xfstests / dmapi / src / suite2 / src / mm_fill.c (download)
Revision 1.5, Wed Nov 9 02:50:19 2005 UTC (11 years, 11 months ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD Changes since 1.4: +14 -28
lines
Update copyright annotations and license boilerplates to correspond with SGI Legals preferences.
Merge of master-melb:xfs-cmds:24329a by kenmcd.
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/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc.
* All Rights Reserved.
*
* 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.
*
* This program is distributed in the hope that it would 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 the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* mmap_fill
*
* use memory mapping to fill a filesystem! :)
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <strings.h>
#include <errno.h>
char * progname;
int fd; /* file descriptor */
addr_t ptr; /* mapped pointers */
off_t off;
long long junk[512] = { -1 };
long long counter;
main(int argc, char * argv[])
{
int i;
for (i=0; i<512; i++) junk[i]=-1;
if ((progname = strrchr(argv[0], '/')) == NULL)
progname = argv[0];
else
progname++;
if (argc < 2) {
fprintf(stderr,"Usage: %s filename\n", progname);
exit(1);
}
fd = open(argv[1], O_RDWR|O_CREAT, 0644);
if (fd < 0) {
fprintf(stderr,"%s: cannot open %s\n", progname, argv[1]);
perror(argv[1]);
exit(3);
}
ptr = mmap64(NULL, (size_t)(0x10000000), PROT_WRITE, MAP_SHARED|MAP_AUTOGROW, fd, 0);
if (ptr == MAP_FAILED) {
fprintf(stderr,"%s: cannot mmap64 %s\n", progname, argv[1]);
perror(argv[1]);
exit(3);
}
for(counter=0; ; counter++) {
junk[0] = counter;
bcopy(junk, ptr, sizeof(junk));
ptr+=sizeof(junk);
}
printf("%s complete.\n", progname);
return 0;
}