Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/fstrans.h
Version:
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1 /* $NetBSD: fstrans.h,v 1.14 2020/05/13 09:21:30 hannken Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Juergen Hannken-Illjes. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * File system transaction operations. 34 */ 35 36 #ifndef _SYS_FSTRANS_H_ 37 #define _SYS_FSTRANS_H_ 38 39 #include <sys/mount.h> 40 41 #define SUSPEND_SUSPEND 0x0001 /* VFS_SUSPENDCTL: suspend */ 42 #define SUSPEND_RESUME 0x0002 /* VFS_SUSPENDCTL: resume */ 43 44 enum fstrans_state { 45 FSTRANS_NORMAL, 46 FSTRANS_SUSPENDED, 47 FSTRANS_SUSPENDING 48 }; 49 50 void fstrans_init(void); 51 void fstrans_lwp_dtor(lwp_t *); 52 void fstrans_start(struct mount *); 53 int fstrans_start_nowait(struct mount *); 54 void fstrans_start_lazy(struct mount *); 55 void fstrans_done(struct mount *); 56 int fstrans_held(struct mount *); 57 int fstrans_is_owner(struct mount *); 58 int fstrans_mount(struct mount *); 59 void fstrans_unmount(struct mount *); 60 61 int fstrans_setstate(struct mount *, enum fstrans_state); 62 enum fstrans_state fstrans_getstate(struct mount *); 63 64 int fscow_establish(struct mount *, int (*)(void *, struct buf *, bool), 65 void *); 66 int fscow_disestablish(struct mount *, int (*)(void *, struct buf *, bool), 67 void *); 68 int fscow_run(struct buf *, bool); 69 70 int vfs_suspend(struct mount *, int); 71 void vfs_resume(struct mount *); 72 73 #endif /* _SYS_FSTRANS_H_ */
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