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