+++ /dev/null
-/* -*- 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) 2003, 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 <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <string.h>
-#include <libgen.h>
-#include <errno.h>
-#include <sys/wait.h>
-
-const char *progname;
-const char usage_fmt[] = "Usage: %s <mountpoint>\n";
-#define INAME_LEN (PATH_MAX + 1)
-
-#define CHECK_IT(exp, pstr) \
-if (!(exp)) { \
- fprintf(stderr, "%s: at %s:%d: ", progname, __FILE__, __LINE__); \
- perror((pstr)); \
- exit(1); \
-}
-
-#define CHECK_SNPRINTF(rc, len) \
- CHECK_IT((rc) > 0 && (rc) <= (len), "snprintf() failed")
-
-static char *get_iname(char *fname, const char *mtpt)
-{
- char *iname;
- int fd, rc;
- struct stat buf;
-
- iname = malloc(INAME_LEN);
- CHECK_IT(iname, "malloc() failed");
-
- fd = open(fname, O_CREAT, 0644);
- if (fd < 0 && errno != EISDIR) {
- fprintf(stderr, "%s:%d: open(%s) failed: %s\n", __FILE__,
- __LINE__, fname, strerror(errno));
- exit(1);
- }
-
- if (fd >= 0)
- close(fd);
-
- rc = stat(fname, &buf);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: stat(%s) failed: %s\n", __FILE__,
- __LINE__, fname, strerror(errno));
- exit(1);
- }
-
- rc = snprintf(iname, INAME_LEN,
- "%s/__iopen__/%lu", mtpt, (unsigned long)buf.st_ino);
- CHECK_SNPRINTF(rc, INAME_LEN);
-
- return iname;
-}
-
-int main(int argc, char *argv[])
-{
- char *fname, *mtpt;
- char *fname_iname, *dir;
- char *dir_iname = NULL, *foo = NULL, *bar = NULL;
- int rc, fd, i, thread = 0;
- int pidlist[10];
-
- progname = basename(argv[0]);
-
- if (argc != 2) {
- fprintf(stderr, usage_fmt, progname);
- return 1;
- }
-
- for (i = 1; i <= 10; i++) {
- rc = fork();
- if (rc < 0) {
- fprintf(stderr, "error: %s: #%d - %s\n", argv[0], i,
- strerror(rc = errno));
- break;
- } else if (rc == 0) {
- thread = i;
- break;
- }
- printf("%s: thread #%d (PID %d) started\n", argv[0], i, rc);
- pidlist[i-1] = rc;
- rc = 0;
- }
-
- if (thread != 0) {
- mtpt = argv[1];
- fname = malloc(INAME_LEN);
- CHECK_IT(fname, "malloc() failed");
-
- rc = snprintf(fname, INAME_LEN,
- "%s/%d", mtpt, getpid());
- CHECK_SNPRINTF(rc, INAME_LEN);
-
- rc = mkdir(fname, 0644);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: mkdir(%s) failed: %s\n",
- __FILE__, __LINE__, fname, strerror(errno));
- exit(1);
- }
-
- fname_iname = get_iname(fname, mtpt);
-
- dir = malloc(INAME_LEN);
- CHECK_IT(dir, "malloc() failed");
-
- rc = snprintf(dir, INAME_LEN, "%s/dir", fname_iname);
- CHECK_SNPRINTF(rc, INAME_LEN);
-
- foo = malloc(INAME_LEN);
- CHECK_IT(foo, "malloc() failed");
-
- bar = malloc(INAME_LEN);
- CHECK_IT(bar, "malloc() failed");
-
- for (i = 0; i < 1000; i++) {
- rc = mkdir(dir, 0644);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: mkdir(%s) failed: %s\n",
- __FILE__, __LINE__, dir,
- strerror(errno));
- exit(1);
- }
-
- dir_iname = get_iname(dir, mtpt);
-
- rc = snprintf(foo, INAME_LEN, "%s/bar", dir_iname);
- CHECK_SNPRINTF(rc, INAME_LEN);
-
- rc = snprintf(bar, INAME_LEN, "%s/bar", dir_iname);
- CHECK_SNPRINTF(rc, INAME_LEN);
-
- fd = open(foo, O_CREAT, 0644);
- if (fd < 0) {
- fprintf(stderr, "%s:%d: open(%s) failed: %s\n",
- __FILE__, __LINE__, foo,
- strerror(errno));
- exit(1);
- }
- rc = close(fd);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: close() failed: %s\n",
- __FILE__, __LINE__, strerror(errno));
- exit(1);
- }
-
- rc = rename(foo, bar);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: rename(%s, %s) failed: "
- "%s\n", __FILE__, __LINE__, foo, bar,
- strerror(errno));
- exit(1);
- }
-
- rc = unlink(bar);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: unlink(%s) failed: "
- "%s\n", __FILE__, __LINE__, bar,
- strerror(errno));
- exit(1);
- }
- rc = rmdir(dir);
- if (rc != 0) {
- fprintf(stderr, "%s:%d: rmdir(%s) failed: %s\n",
- __FILE__, __LINE__, dir,
- strerror(errno));
- exit(1);
- }
-
- free(dir_iname);
- }
- } else {
- for ( i=0; i<10; i++)
- waitpid(pidlist[i], NULL, 0);
- }
- return 0;
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff