diff options
Diffstat (limited to 'sys/geom/geom_slice.h')
| -rw-r--r-- | sys/geom/geom_slice.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sys/geom/geom_slice.h b/sys/geom/geom_slice.h new file mode 100644 index 0000000..4ef484e --- /dev/null +++ b/sys/geom/geom_slice.h @@ -0,0 +1,60 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +struct g_slice { + off_t offset; + off_t length; + struct g_provider *provider; +}; + +typedef int g_slice_start_t (struct bio *bp); + +struct g_slicer { + int nslice; + struct g_slice *slices; + void *softc; + g_slice_start_t *start; +}; + +void g_slice_orphan(struct g_consumer *cp, struct thread *tp); +struct g_slicer * g_slice_init(unsigned nslice, unsigned scsize); +int g_slice_access(struct g_provider *pp, int dr, int dw, int de); +void g_slice_start(struct bio *bp); +void g_slice_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp); +struct g_provider * g_slice_addslice(struct g_geom *gp, int index, off_t offset, off_t length, char *fmt, ...); +struct g_geom * g_slice_new(struct g_method *mp, int slices, struct g_provider *pp, struct g_consumer **cpp, void *extrap, int extra, g_slice_start_t *start); + |
