080518d810
fuse(4) was heavily instrumented with debug printf statements that could only be enabled with compile-time flags. They fell into three basic groups: 1. Totally redundant with dtrace FBT probes. These I deleted. 2. Print textual information, usually error messages. These I converted to SDT probes of the form fuse:fuse:FILE:trace. They work just like the old printf statements except they can be enabled at runtime with dtrace. They can be filtered by FILE and/or by priority. 3. More complicated probes that print detailed information. These I converted into ad-hoc SDT probes. Also, de-inline fuse_internal_cache_attrs. It's big enough to be a regular function, and this way it gets a dtrace FBT probe. This commit is a merge of r345304, r344914, r344703, and r344664 from projects/fuse2. Reviewed by: cem MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19667
170 lines
5.3 KiB
C
170 lines
5.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2007-2009 Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Copyright (C) 2005 Csaba Henk.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "fuse_kernel.h"
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#define FUSE_DEFAULT_DAEMON_TIMEOUT 60 /* s */
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#define FUSE_MIN_DAEMON_TIMEOUT 0 /* s */
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#define FUSE_MAX_DAEMON_TIMEOUT 600 /* s */
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#ifndef FUSE_FREEBSD_VERSION
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#define FUSE_FREEBSD_VERSION "0.4.4"
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#endif
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/* Mapping versions to features */
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#define FUSE_KERNELABI_GEQ(maj, min) \
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(FUSE_KERNEL_VERSION > (maj) || (FUSE_KERNEL_VERSION == (maj) && FUSE_KERNEL_MINOR_VERSION >= (min)))
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/*
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* Appearance of new FUSE operations is not always in par with version
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* numbering... At least, 7.3 is a sufficient condition for having
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* FUSE_{ACCESS,CREATE}.
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*/
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#if FUSE_KERNELABI_GEQ(7, 3)
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#ifndef FUSE_HAS_ACCESS
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#define FUSE_HAS_ACCESS 1
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#endif
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#ifndef FUSE_HAS_CREATE
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#define FUSE_HAS_CREATE 1
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#endif
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#else /* FUSE_KERNELABI_GEQ(7, 3) */
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#ifndef FUSE_HAS_ACCESS
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#define FUSE_HAS_ACCESS 0
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#endif
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#ifndef FUSE_HAS_CREATE
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#define FUSE_HAS_CREATE 0
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#endif
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#endif
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#if FUSE_KERNELABI_GEQ(7, 7)
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#ifndef FUSE_HAS_GETLK
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#define FUSE_HAS_GETLK 1
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#endif
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#ifndef FUSE_HAS_SETLK
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#define FUSE_HAS_SETLK 1
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#endif
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#ifndef FUSE_HAS_SETLKW
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#define FUSE_HAS_SETLKW 1
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#endif
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#ifndef FUSE_HAS_INTERRUPT
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#define FUSE_HAS_INTERRUPT 1
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#endif
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#else /* FUSE_KERNELABI_GEQ(7, 7) */
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#ifndef FUSE_HAS_GETLK
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#define FUSE_HAS_GETLK 0
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#endif
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#ifndef FUSE_HAS_SETLK
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#define FUSE_HAS_SETLK 0
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#endif
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#ifndef FUSE_HAS_SETLKW
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#define FUSE_HAS_SETLKW 0
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#endif
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#ifndef FUSE_HAS_INTERRUPT
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#define FUSE_HAS_INTERRUPT 0
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#endif
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#endif
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#if FUSE_KERNELABI_GEQ(7, 8)
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#ifndef FUSE_HAS_FLUSH_RELEASE
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#define FUSE_HAS_FLUSH_RELEASE 1
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/*
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* "DESTROY" came in the middle of the 7.8 era,
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* so this is not completely exact...
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*/
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#ifndef FUSE_HAS_DESTROY
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#define FUSE_HAS_DESTROY 1
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#endif
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#endif
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#else /* FUSE_KERNELABI_GEQ(7, 8) */
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#ifndef FUSE_HAS_FLUSH_RELEASE
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#define FUSE_HAS_FLUSH_RELEASE 0
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#ifndef FUSE_HAS_DESTROY
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#define FUSE_HAS_DESTROY 0
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#endif
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#endif
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#endif
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/* misc */
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SYSCTL_DECL(_vfs_fusefs);
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/* Fuse locking */
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extern struct mtx fuse_mtx;
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#define FUSE_LOCK() fuse_lck_mtx_lock(fuse_mtx)
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#define FUSE_UNLOCK() fuse_lck_mtx_unlock(fuse_mtx)
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#define RECTIFY_TDCR(td, cred) \
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do { \
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if (! (td)) \
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(td) = curthread; \
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if (! (cred)) \
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(cred) = (td)->td_ucred; \
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} while (0)
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#define fuse_lck_mtx_lock(mtx) mtx_lock(&(mtx))
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#define fuse_lck_mtx_unlock(mtx) mtx_unlock(&(mtx))
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void fuse_ipc_init(void);
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void fuse_ipc_destroy(void);
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int fuse_device_init(void);
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void fuse_device_destroy(void);
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