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Differential D21110 Diff 60506 sys/fs/fuse/fuse_main.c

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sys/fs/fuse/fuse_main.c

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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* *
* Copyright (C) 2005 Csaba Henk. * Copyright (C) 2005 Csaba Henk.
* All rights reserved. * 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 * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * documentation and/or other materials provided with the distribution.
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#include <sys/vnode.h> #include <sys/vnode.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/file.h> #include <sys/file.h>
#include <sys/buf.h> #include <sys/buf.h>
#include <sys/sdt.h> #include <sys/sdt.h>
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include "fuse.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 void fuse_bringdown(eventhandler_tag eh_tag);
static int fuse_loader(struct module *m, int what, void *arg); static int fuse_loader(struct module *m, int what, void *arg);
struct mtx fuse_mtx; struct mtx fuse_mtx;
extern struct vfsops fuse_vfsops; extern struct vfsops fuse_vfsops;
extern struct cdevsw fuse_cdevsw; extern struct cdevsw fuse_cdevsw;
extern struct vop_vector fuse_vnops; extern struct vop_vector fuse_fifonops;
extern uma_zone_t fuse_pbuf_zone; extern uma_zone_t fuse_pbuf_zone;
static struct vfsconf fuse_vfsconf = { static struct vfsconf fuse_vfsconf = {
.vfc_version = VFS_VERSION, .vfc_version = VFS_VERSION,
.vfc_name = "fusefs", .vfc_name = "fusefs",
.vfc_vfsops = &fuse_vfsops, .vfc_vfsops = &fuse_vfsops,
.vfc_typenum = -1, .vfc_typenum = -1,
.vfc_flags = VFCF_JAIL | VFCF_SYNTHETIC .vfc_flags = VFCF_JAIL | VFCF_SYNTHETIC
}; };
SYSCTL_NODE(_vfs, OID_AUTO, fusefs, CTLFLAG_RW, 0, "FUSE tunables");
SYSCTL_NODE(_vfs_fusefs, OID_AUTO, stats, CTLFLAG_RW, 0, "FUSE statistics");
SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_major, CTLFLAG_RD, SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_major, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, FUSE_KERNEL_VERSION, "FUSE kernel abi major version"); SYSCTL_NULL_INT_PTR, FUSE_KERNEL_VERSION, "FUSE kernel abi major version");
SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_minor, CTLFLAG_RD, SYSCTL_INT(_vfs_fusefs, OID_AUTO, kernelabi_minor, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, FUSE_KERNEL_MINOR_VERSION, "FUSE kernel abi minor version"); SYSCTL_NULL_INT_PTR, FUSE_KERNEL_MINOR_VERSION, "FUSE kernel abi minor version");
SDT_PROVIDER_DEFINE(fuse); SDT_PROVIDER_DEFINE(fusefs);
/****************************** /******************************
* *
* >>> Module management stuff * >>> Module management stuff
* *
******************************/ ******************************/
static void static void
fuse_bringdown(eventhandler_tag eh_tag) fuse_bringdown(eventhandler_tag eh_tag)
{ {
fuse_node_destroy();
fuse_internal_destroy();
fuse_file_destroy();
fuse_ipc_destroy(); fuse_ipc_destroy();
fuse_device_destroy(); fuse_device_destroy();
mtx_destroy(&fuse_mtx); mtx_destroy(&fuse_mtx);
} }
static int static int
fuse_loader(struct module *m, int what, void *arg) fuse_loader(struct module *m, int what, void *arg)
{ {
static eventhandler_tag eh_tag = NULL; static eventhandler_tag eh_tag = NULL;
int err = 0; int err = 0;
switch (what) { switch (what) {
case MOD_LOAD: /* kldload */ case MOD_LOAD: /* kldload */
mtx_init(&fuse_mtx, "fuse_mtx", NULL, MTX_DEF); mtx_init(&fuse_mtx, "fuse_mtx", NULL, MTX_DEF);
err = fuse_device_init(); err = fuse_device_init();
if (err) { if (err) {
mtx_destroy(&fuse_mtx); mtx_destroy(&fuse_mtx);
return (err); return (err);
} }
fuse_ipc_init(); fuse_ipc_init();
fuse_file_init();
fuse_internal_init();
fuse_node_init();
fuse_pbuf_zone = pbuf_zsecond_create("fusepbuf", nswbuf / 2); fuse_pbuf_zone = pbuf_zsecond_create("fusepbuf", nswbuf / 2);
/* vfs_modevent ignores its first arg */ /* vfs_modevent ignores its first arg */
if ((err = vfs_modevent(NULL, what, &fuse_vfsconf))) if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
fuse_bringdown(eh_tag); fuse_bringdown(eh_tag);
else
printf("fuse-freebsd: version %s, FUSE ABI %d.%d\n",
FUSE_FREEBSD_VERSION,
FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
break; break;
case MOD_UNLOAD: case MOD_UNLOAD:
if ((err = vfs_modevent(NULL, what, &fuse_vfsconf))) if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
return (err); return (err);
fuse_bringdown(eh_tag); fuse_bringdown(eh_tag);
uma_zdestroy(fuse_pbuf_zone); uma_zdestroy(fuse_pbuf_zone);
break; break;
default: default:
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