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87 lines
3.0 KiB
C
87 lines
3.0 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE 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 THE 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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#ifndef _GEOM_GEOM_SLICE_H_
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#define _GEOM_GEOM_SLICE_H_
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struct g_slice {
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off_t offset;
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off_t length;
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u_int sectorsize;
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struct g_provider *provider;
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};
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struct g_slice_hot {
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off_t offset;
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off_t length;
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int ract;
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int dact;
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int wact;
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};
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typedef int g_slice_start_t (struct bio *bp);
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struct g_slicer {
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u_int nslice;
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u_int nprovider;
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struct g_slice *slices;
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u_int nhotspot;
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struct g_slice_hot *hotspot;
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void *softc;
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g_slice_start_t *start;
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g_event_t *hot;
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};
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g_dumpconf_t g_slice_dumpconf;
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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, ...);
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#define G_SLICE_CONFIG_CHECK 0
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#define G_SLICE_CONFIG_SET 1
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#define G_SLICE_CONFIG_FORCE 2
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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);
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int g_slice_conf_hot(struct g_geom *gp, u_int idx, off_t offset, off_t length, int ract, int dact, int wact);
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#define G_SLICE_HOT_ALLOW 1
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#define G_SLICE_HOT_DENY 2
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#define G_SLICE_HOT_START 4
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#define G_SLICE_HOT_CALL 8
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void g_slice_finish_hot(struct bio *bp);
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#endif /* _GEOM_GEOM_SLICE_H_ */
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