--- /dev/null
+/*
+ * Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+/*
+ * Test program that uses the same interfaces as mkfs.xfs for
+ * Linux, dumps out just the device size values from a driver.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+
+#ifndef BLKGETSIZE64
+# define BLKGETSIZE64 _IOR(0x12,114,size_t)
+#endif
+#ifndef BLKSSZGET
+# define BLKSSZGET _IO(0x12,104)
+#endif
+
+int main(int argc, char **argv)
+{
+ __uint64_t size;
+ long long sz = -1;
+ int error, fd;
+
+ if (argc != 2) {
+ fputs("insufficient arguments\n", stderr);
+ return 1;
+ }
+ fd = open(argv[1], O_RDONLY);
+ if (!fd) {
+ perror(argv[1]);
+ return 1;
+ }
+
+ error = ioctl(fd, BLKGETSIZE64, &size);
+ if (error >= 0) {
+ /* BLKGETSIZE64 returns size in bytes not 512-byte blocks */
+ sz = (long long)(size >> 9);
+ printf("%lld 512 byte blocks (BLKGETSIZE64)\n", sz);
+ } else {
+ /* If BLKGETSIZE64 fails, try BLKGETSIZE */
+ unsigned long tmpsize;
+
+ error = ioctl(fd, BLKGETSIZE, &tmpsize);
+ if (error < 0) {
+ fprintf(stderr, "can't determine device size");
+ return 1;
+ }
+ sz = (long long)tmpsize;
+ printf("%lld 512 byte blocks (BLKGETSIZE)\n", sz);
+ }
+ return 0;
+}