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/*
* libhugetlbfs - Easy use of Linux hugepages
* Copyright (C) 2005-2006 David Gibson & Adam Litke, IBM Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <stdarg.h>
#include <hugetlbfs.h>
#include "hugetests.h"
/* We override the normal open, so libhugetlbfs gets an apparently
* empty /proc/mounts or /etc/mtab */
int open(const char *path, int flags, ...)
{
int (*old_open)(const char *, int, ...);
int fd;
if ((strcmp(path, "/proc/mounts") == 0)
|| (strcmp(path, "/etc/mtab") == 0))
path = "/dev/null";
old_open = dlsym(RTLD_NEXT, "open");
if (flags & O_CREAT) {
va_list ap;
va_start(ap, flags);
fd = (*old_open)(path, flags, va_arg(ap, mode_t));
va_end(ap);
return fd;
} else {
return (*old_open)(path, flags);
}
}
int main(int argc, char *argv[])
{
int fd;
test_init(argc, argv);
fd = hugetlbfs_unlinked_fd();
if (fd < 0)
PASS();
FAIL("Mysteriously found a mount");
}
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