freebsd-dev/sys/geom/geom_slice.h
Pedro F. Giffuni 3728855a0f sys/geom: adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:17:37 +00:00

93 lines
3.2 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2002 Poul-Henning Kamp
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Poul-Henning Kamp
* and NAI Labs, the Security Research Division of Network Associates, Inc.
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
* DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _GEOM_GEOM_SLICE_H_
#define _GEOM_GEOM_SLICE_H_
struct g_slice {
off_t offset;
off_t length;
u_int sectorsize;
struct g_provider *provider;
};
struct g_slice_hot {
off_t offset;
off_t length;
int ract;
int dact;
int wact;
};
typedef int g_slice_start_t (struct bio *bp);
struct g_slicer {
u_int nslice;
u_int nprovider;
struct g_slice *slices;
u_int nhotspot;
struct g_slice_hot *hotspot;
void *softc;
g_slice_start_t *start;
g_event_t *hot;
};
g_dumpconf_t g_slice_dumpconf;
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);
void g_slice_spoiled(struct g_consumer *cp);
void g_slice_orphan(struct g_consumer *cp);
#define G_SLICE_CONFIG_CHECK 0
#define G_SLICE_CONFIG_SET 1
#define G_SLICE_CONFIG_FORCE 2
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);
int g_slice_conf_hot(struct g_geom *gp, u_int idx, off_t offset, off_t length, int ract, int dact, int wact);
#define G_SLICE_HOT_ALLOW 1
#define G_SLICE_HOT_DENY 2
#define G_SLICE_HOT_START 4
#define G_SLICE_HOT_CALL 8
int g_slice_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp);
void g_slice_finish_hot(struct bio *bp);
#endif /* _GEOM_GEOM_SLICE_H_ */