/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * 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.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
*/
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
perror(mmap_file);
return errno;
}
- ftruncate(fd, region);
+ if (ftruncate(fd, region) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
ptr = mmap(NULL, region, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (ptr == MAP_FAILED) {
perror(mmap_file);
return errno;
}
- ftruncate(fd, page_size);
+ if (ftruncate(fd, page_size) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
ptr = mmap(NULL, page_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
if (ptr == MAP_FAILED) {
perror(mmap_file);
return errno;
}
- ftruncate(fd, region);
+ if (ftruncate(fd, region) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
ptr = mmap(NULL, region, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (ptr == MAP_FAILED) {
perror(fileb);
return errno;
}
- ftruncate(fdr, region);
+ if (ftruncate(fdr, region) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
fdw = open(filea, O_CREAT|O_RDWR, 0600);
if (fdw < 0) {
perror(filea);
rc = errno;
goto out_close;
}
- ftruncate(fdw, region);
+ if (ftruncate(fdw, region) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
ptr = mmap(NULL, region, PROT_READ|PROT_WRITE, MAP_SHARED, fdr, 0);
if (ptr == MAP_FAILED) {
}
if (prefix)
- sprintf(cmd, "ls /proc/fs/lustre/ldlm/namespaces/*/lru_size | grep -i %s", prefix);
+ sprintf(cmd, "ls /proc/fs/lustre/ldlm/namespaces/*-%s-*/lru_size", prefix);
else
sprintf(cmd, "ls /proc/fs/lustre/ldlm/namespaces/*/lru_size");
perror(mmap_file);
return errno;
}
- ftruncate(fd, region);
+ if (ftruncate(fd, region) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out_close;
+ }
ptr = mmap(NULL, region, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (ptr == MAP_FAILED) {
perror(mmap_file);
return errno;
}
- ftruncate(fd, page_size);
+ if (ftruncate(fd, page_size) < 0) {
+ perror("ftruncate()");
+ rc = errno;
+ goto out;
+ }
fd2 = open(mmap_file2, O_RDWR, 0600);
if (fd2 < 0) {
return rc;
}
+static int mmap_tst7_func(char *mnt, int rw)
+{
+ char fname[256];
+ char *buf = MAP_FAILED;
+ ssize_t bytes;
+ int fd = -1;
+ int rc = 0;
+
+ if (snprintf(fname, 256, "%s/mmap_tst7.%s",
+ mnt, (rw == 0) ? "read":"write") >= 256) {
+ fprintf(stderr, "dir name too long\n");
+ rc = ENAMETOOLONG;
+ goto out;
+ }
+ fd = open(fname, O_RDWR | O_DIRECT | O_CREAT, 0644);
+ if (fd == -1) {
+ perror("open");
+ rc = errno;
+ goto out;
+ }
+ if (ftruncate(fd, 2 * page_size) == -1) {
+ perror("truncate");
+ rc = errno;
+ goto out;
+ }
+ buf = mmap(NULL, page_size,
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ if (buf == MAP_FAILED) {
+ perror("mmap");
+ rc = errno;
+ goto out;
+ }
+ /* ensure the second page isn't mapped */
+ munmap(buf + page_size, page_size);
+ bytes = (rw == 0) ? read(fd, buf, 2 * page_size) :
+ write(fd, buf, 2 * page_size);
+ /* Expected behavior */
+ if (bytes == page_size)
+ goto out;
+ fprintf(stderr, "%s returned %zd, errno = %d\n",
+ (rw == 0)?"read":"write", bytes, errno);
+ rc = EIO;
+out:
+ if (buf != MAP_FAILED)
+ munmap(buf, page_size);
+ if (fd != -1)
+ close(fd);
+ return rc;
+}
+
+static int mmap_tst7(char *mnt)
+{
+ int rc;
+
+ rc = mmap_tst7_func(mnt, 0);
+ if (rc != 0)
+ return rc;
+ rc = mmap_tst7_func(mnt, 1);
+ return rc;
+}
+
static int remote_tst(int tc, char *mnt)
{
int rc = 0;
"which mmapped to just this file", mmap_tst5, 1 },
{ 6, "mmap test6: check mmap write/read content on two nodes",
mmap_tst6, 2 },
+ { 7, "mmap test7: file i/o with an unmapped buffer", mmap_tst7, 1},
{ 0, NULL, 0, 0 }
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff