1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2002 Poul-Henning Kamp 5 * Copyright (c) 2002 Networks Associates Technology, Inc. 6 * All rights reserved. 7 * 8 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 9 * and NAI Labs, the Security Research Division of Network Associates, Inc. 10 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 11 * DARPA CHATS research program. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. The names of the authors may not be used to endorse or promote 22 * products derived from this software without specific prior written 23 * permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD$ 38 */ 39 40 #ifndef _GEOM_GEOM_SLICE_H_ 41 #define _GEOM_GEOM_SLICE_H_ 42 43 struct g_slice { 44 off_t offset; 45 off_t length; 46 u_int sectorsize; 47 struct g_provider *provider; 48 }; 49 50 struct g_slice_hot { 51 off_t offset; 52 off_t length; 53 int ract; 54 int dact; 55 int wact; 56 }; 57 58 typedef int g_slice_start_t (struct bio *bp); 59 60 struct g_slicer { 61 u_int nslice; 62 u_int nprovider; 63 struct g_slice *slices; 64 65 u_int nhotspot; 66 struct g_slice_hot *hotspot; 67 68 void *softc; 69 g_slice_start_t *start; 70 g_event_t *hot; 71 }; 72 73 g_dumpconf_t g_slice_dumpconf; 74 int g_slice_config(struct g_geom *gp, u_int idx, int how, off_t offset, off_t length, u_int sectorsize, const char *fmt, ...) __printflike(7, 8); 75 void g_slice_spoiled(struct g_consumer *cp); 76 void g_slice_orphan(struct g_consumer *cp); 77 #define G_SLICE_CONFIG_CHECK 0 78 #define G_SLICE_CONFIG_SET 1 79 #define G_SLICE_CONFIG_FORCE 2 80 struct g_geom * g_slice_new(struct g_class *mp, u_int slices, struct g_provider *pp, struct g_consumer **cpp, void *extrap, int extra, g_slice_start_t *start); 81 82 int g_slice_conf_hot(struct g_geom *gp, u_int idx, off_t offset, off_t length, int ract, int dact, int wact); 83 #define G_SLICE_HOT_ALLOW 1 84 #define G_SLICE_HOT_DENY 2 85 #define G_SLICE_HOT_START 4 86 #define G_SLICE_HOT_CALL 8 87 88 int g_slice_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp); 89 90 void g_slice_finish_hot(struct bio *bp); 91 92 #endif /* _GEOM_GEOM_SLICE_H_ */ 93