6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
81 lines
2.9 KiB
C
81 lines
2.9 KiB
C
/* $NetBSD: fstrans.h,v 1.10 2008/11/07 00:15:42 joerg Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Juergen Hannken-Illjes.
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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 THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* File system transaction operations.
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*/
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#ifndef _SYS_FSTRANS_H_
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#define _SYS_FSTRANS_H_
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#include <sys/mount.h>
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#define SUSPEND_SUSPEND 0x0001 /* VFS_SUSPENDCTL: suspend */
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#define SUSPEND_RESUME 0x0002 /* VFS_SUSPENDCTL: resume */
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enum fstrans_lock_type {
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FSTRANS_LAZY = 1, /* Granted while not suspended */
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FSTRANS_SHARED = 2 /* Granted while not suspending */
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#ifdef _FSTRANS_API_PRIVATE
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,
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FSTRANS_EXCL = 3 /* Internal: exclusive lock */
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#endif /* _FSTRANS_API_PRIVATE */
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};
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enum fstrans_state {
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FSTRANS_NORMAL,
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FSTRANS_SUSPENDING,
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FSTRANS_SUSPENDED
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};
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void fstrans_init(void);
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#define fstrans_start(mp, t) _fstrans_start((mp), (t), 1)
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#define fstrans_start_nowait(mp, t) _fstrans_start((mp), (t), 0)
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int _fstrans_start(struct mount *, enum fstrans_lock_type, int);
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void fstrans_done(struct mount *);
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int fstrans_is_owner(struct mount *);
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int fstrans_mount(struct mount *);
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void fstrans_unmount(struct mount *);
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int fstrans_setstate(struct mount *, enum fstrans_state);
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enum fstrans_state fstrans_getstate(struct mount *);
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int fscow_establish(struct mount *, int (*)(void *, struct buf *, bool),
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void *);
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int fscow_disestablish(struct mount *, int (*)(void *, struct buf *, bool),
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void *);
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int fscow_run(struct buf *, bool);
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int vfs_suspend(struct mount *, int);
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void vfs_resume(struct mount *);
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#endif /* _SYS_FSTRANS_H_ */
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