+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2014, Intel Corporation.
+ * Use is subject to license terms.
+ */
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
+#undef perror
+#define perror(str) ((void)0)
+
int main(int argc, char **argv)
{
- int rc;
- int fd = open(argv[1], O_WRONLY);
+ ssize_t rc;
+ int fd;
+ void *volatile fd_ptr;
+ void *volatile buf = (void *)0x4096000;
+ fd = open(argv[1], O_WRONLY);
if (fd == -1) {
perror(argv[1]);
goto read;
}
/* We need rc because Sles11 compiler warns against unchecked
- * return value of read and write */
- rc = write(fd, (void *)0x4096000, 5);
+ * return value of read and write
+ */
+ rc = write(fd, buf, 5);
if (rc != 5)
perror("write badarea (Should have failed)");
- rc = write(fd, &fd, 0);
+ fd_ptr = (void *)&fd;
+ rc = write(fd, fd_ptr, 0);
if (rc != 0)
perror("write zero bytes");
- rc = write(fd, &fd, 1);
+ rc = write(fd, fd_ptr, 1);
if (rc != 1)
perror("write one byte");
- rc = write(fd, &fd, 2UL*1024*1024);
+ rc = write(fd, fd_ptr, 2UL*1024*1024);
if (rc != 2UL*1024*1024)
perror("write 2M");
- rc = write(fd, &fd, 2UL*1024*1024*1024);
- if (rc != 2UL*1024*1024*1024)
- perror("write 2G");
+ rc = write(fd, fd_ptr, 1UL*(1024+512)*1024*1024);
+ if (rc != 1UL*(1024+512)*1024*1024)
+ perror("write 1.5G");
- rc = write(fd, &fd, -2);
+ rc = write(fd, fd_ptr, -2);
if (rc != -2)
perror("write -2");
fd = open(argv[1], O_RDONLY);
if (fd == -1)
return 0;
- rc = read(fd, (void *)0x4096000, 5);
+ rc = read(fd, buf, 5);
perror("read");
close(fd);