/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2007-2009 Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (C) 2005 Csaba Henk.
* All rights reserved.
*
* Copyright (c) 2019 The FreeBSD Foundation
*
* Portions of this software were developed by BFF Storage Systems, LLC under
* sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/buf.h>
#include <sys/sdt.h>
#include <sys/sysctl.h>
#include "fuse.h"
#include "fuse_file.h"
#include "fuse_ipc.h"
#include "fuse_internal.h"
#include "fuse_node.h"
static void fuse_bringdown(eventhandler_tag eh_tag);
static int fuse_loader(struct module *m, int what, void *arg);
struct mtx fuse_mtx;
extern struct vfsops fuse_vfsops;
extern struct cdevsw fuse_cdevsw;
extern struct vop_vector fuse_fifonops;
extern uma_zone_t fuse_pbuf_zone;
static struct vfsconf fuse_vfsconf = {
.vfc_version = VFS_VERSION,
.vfc_name = "fusefs",
.vfc_vfsops = &fuse_vfsops,
.vfc_typenum = -1,
.vfc_flags = VFCF_JAIL | VFCF_SYNTHETIC
};
SYSCTL_NODE(_vfs, OID_AUTO, fusefs, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"FUSE tunables");
SYSCTL_NODE(_vfs_fusefs, OID_AUTO, stats, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"FUSE statistics");
SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_major, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, FUSE_KERNEL_VERSION, "FUSE kernel abi major version");
SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_minor, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, FUSE_KERNEL_MINOR_VERSION, "FUSE kernel abi minor version");
SDT_PROVIDER_DEFINE(fusefs);
/******************************
*
* >>> Module management stuff
*
******************************/
static void
fuse_bringdown(eventhandler_tag eh_tag)
{
fuse_node_destroy();
fuse_internal_destroy();
fuse_file_destroy();
fuse_ipc_destroy();
fuse_device_destroy();
mtx_destroy(&fuse_mtx);
}
static int
fuse_loader(struct module *m, int what, void *arg)
{
static eventhandler_tag eh_tag = NULL;
int err = 0;
switch (what) {
case MOD_LOAD: /* kldload */
mtx_init(&fuse_mtx, "fuse_mtx", NULL, MTX_DEF);
err = fuse_device_init();
if (err) {
mtx_destroy(&fuse_mtx);
return (err);
}
fuse_ipc_init();
fuse_file_init();
fuse_internal_init();
fuse_node_init();
fuse_pbuf_zone = pbuf_zsecond_create("fusepbuf", nswbuf / 2);
/* vfs_modevent ignores its first arg */
if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
fuse_bringdown(eh_tag);
break;
case MOD_UNLOAD:
if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
return (err);
fuse_bringdown(eh_tag);
uma_zdestroy(fuse_pbuf_zone);
break;
default:
return (EINVAL);
}
return (err);
}
/* Registering the module */
static moduledata_t fuse_moddata = {
"fusefs",
fuse_loader,
&fuse_vfsconf
};
DECLARE_MODULE(fusefs, fuse_moddata, SI_SUB_VFS, SI_ORDER_MIDDLE);
MODULE_VERSION(fusefs, 1);
