15b9bcb121
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
/*-
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* Copyright (c) 1994 Bruce D. Evans.
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* All rights reserved.
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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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*
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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 _SYS_DISKSLICE_H_
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#define _SYS_DISKSLICE_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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#define BASE_SLICE 2
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#define COMPATIBILITY_SLICE 0
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#define DIOCGSLICEINFO _IOR('d', 111, struct diskslices)
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#define DIOCSYNCSLICEINFO _IOW('d', 112, int)
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#define MAX_SLICES 32
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#define WHOLE_DISK_SLICE 1
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struct diskslice {
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u_long ds_offset; /* starting sector */
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u_long ds_size; /* number of sectors */
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int ds_type; /* (foreign) slice type */
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#ifdef PC98
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int ds_subtype; /* sub slice type */
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u_char ds_name[16]; /* slice name */
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#endif
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struct disklabel *ds_label; /* BSD label, if any */
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void *ds_bdev; /* devfs token for whole slice */
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void *ds_cdev; /* devfs token for raw whole slice */
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#ifdef MAXPARTITIONS /* XXX don't depend on disklabel.h */
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#if MAXPARTITIONS != 8 /* but check consistency if possible */
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#error "inconsistent MAXPARTITIONS"
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#endif
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#else
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#define MAXPARTITIONS 8
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#endif
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void *ds_bdevs[MAXPARTITIONS]; /* XXX s.b. in label */
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void *ds_cdevs[MAXPARTITIONS]; /* XXX s.b. in label */
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u_char ds_bopenmask; /* bdevs open */
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u_char ds_copenmask; /* cdevs open */
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u_char ds_openmask; /* [bc]devs open */
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u_char ds_wlabel; /* nonzero if label is writable */
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};
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struct diskslices {
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struct cdevsw *dss_cdevsw; /* for containing device */
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int dss_first_bsd_slice; /* COMPATIBILITY_SLICE is mapped here */
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u_int dss_nslices; /* actual dimension of dss_slices[] */
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u_int dss_oflags; /* copy of flags for "first" open */
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int dss_secmult; /* block to sector multiplier */
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int dss_secshift; /* block to sector shift (or -1) */
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int dss_secsize; /* sector size */
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struct diskslice
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dss_slices[MAX_SLICES]; /* actually usually less */
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};
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#ifdef _KERNEL
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/* Flags for dsopen(). */
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#define DSO_NOLABELS 1
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#define DSO_ONESLICE 2
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#define dsgetlabel(dev, ssp) (ssp->dss_slices[dkslice(dev)].ds_label)
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struct buf;
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struct disklabel;
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int dscheck __P((struct buf *bp, struct diskslices *ssp));
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void dsclose __P((dev_t dev, int mode, struct diskslices *ssp));
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void dsgone __P((struct diskslices **sspp));
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int dsinit __P((dev_t dev, struct disklabel *lp,
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struct diskslices **sspp));
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int dsioctl __P((dev_t dev, u_long cmd, caddr_t data,
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int flags, struct diskslices **sspp));
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int dsisopen __P((struct diskslices *ssp));
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struct diskslices *dsmakeslicestruct __P((int nslices, struct disklabel *lp));
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char *dsname __P((dev_t dev, int unit, int slice, int part,
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char *partname));
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int dsopen __P((dev_t dev, int mode, u_int flags,
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struct diskslices **sspp, struct disklabel *lp));
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int dssize __P((dev_t dev, struct diskslices **sspp));
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#endif /* _KERNEL */
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#endif /* !_SYS_DISKSLICE_H_ */
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