From e2abcdca396661cbe0ae2ddb13d5c2b85682c13a Mon Sep 17 00:00:00 2001 From: Cem Keylan Date: Fri, 16 Oct 2020 17:41:25 +0300 Subject: initial commit --- sys/sys/disk.h | 160 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 sys/sys/disk.h (limited to 'sys/sys/disk.h') diff --git a/sys/sys/disk.h b/sys/sys/disk.h new file mode 100644 index 0000000..4dcd488 --- /dev/null +++ b/sys/sys/disk.h @@ -0,0 +1,160 @@ +/* $OpenBSD: disk.h,v 1.36 2017/05/04 22:47:27 deraadt Exp $ */ +/* $NetBSD: disk.h,v 1.11 1996/04/28 20:22:50 thorpej Exp $ */ + +/* + * Copyright (c) 1995 Jason R. Thorpe. All rights reserved. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Lawrence Berkeley Laboratory. + * + * 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. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + * + * from: Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp (LBL) + * + * @(#)disk.h 8.1 (Berkeley) 6/2/93 + */ + +/* + * Disk device structures. + */ + +#include +#include +#include +#include +#include + +struct buf; +struct disklabel; + +#define DS_DISKNAMELEN 16 + +struct diskstats { + char ds_name[DS_DISKNAMELEN]; + int ds_busy; /* busy counter */ + u_int64_t ds_rxfer; /* total number of read transfers */ + u_int64_t ds_wxfer; /* total number of write transfers */ + u_int64_t ds_seek; /* total independent seek operations */ + u_int64_t ds_rbytes; /* total bytes read */ + u_int64_t ds_wbytes; /* total bytes written */ + struct timeval ds_attachtime; /* time disk was attached */ + struct timeval ds_timestamp; /* time of first busy or any unbusy */ + struct timeval ds_time; /* total time spent busy */ +}; + +struct disk { + TAILQ_ENTRY(disk) dk_link; /* link in global disklist */ + struct rwlock dk_lock; /* disk lock */ + struct mutex dk_mtx; /* busy/unbusy mtx */ + char *dk_name; /* disk name */ + struct device *dk_device; /* disk device structure. */ + dev_t dk_devno; /* disk device number. */ + int dk_flags; /* disk flags */ +#define DKF_CONSTRUCTED 0x0001 +#define DKF_OPENED 0x0002 +#define DKF_NOLABELREAD 0x0004 +#define DKF_LABELVALID 0x0008 + + /* + * Metrics data; note that some metrics may have no meaning + * on certain types of disks. + */ + int dk_busy; /* busy counter */ + u_int64_t dk_rxfer; /* total number of read transfers */ + u_int64_t dk_wxfer; /* total number of write transfers */ + u_int64_t dk_seek; /* total independent seek operations */ + u_int64_t dk_rbytes; /* total bytes read */ + u_int64_t dk_wbytes; /* total bytes written */ + struct timeval dk_attachtime; /* time disk was attached */ + struct timeval dk_timestamp; /* time of first busy or any unbusy */ + struct timeval dk_time; /* total time spent busy */ + + int dk_bopenmask; /* block devices open */ + int dk_copenmask; /* character devices open */ + int dk_openmask; /* composite (bopen|copen) */ + int dk_state; /* label state ### */ + int dk_blkshift; /* shift to convert DEV_BSIZE to blks*/ + int dk_byteshift; /* shift to convert bytes to blks */ + + /* + * Disk label information. Storage for the in-core disk label + * must be dynamically allocated, otherwise the size of this + * structure becomes machine-dependent. + */ + struct disklabel *dk_label; +}; + +/* states */ +#define DK_CLOSED 0 /* drive is closed */ +#define DK_WANTOPEN 1 /* drive being opened */ +#define DK_WANTOPENRAW 2 /* drive being opened */ +#define DK_RDLABEL 3 /* label being read */ +#define DK_OPEN 4 /* label read, drive open */ +#define DK_OPENRAW 5 /* open without label */ + +/* Disk map flags. */ +#define DM_OPENPART 0x1 /* Open raw partition. */ +#define DM_OPENBLCK 0x2 /* Open block device. */ + +/* + * disklist_head is defined here so that user-land has access to it. + */ +TAILQ_HEAD(disklist_head, disk); /* the disklist is a TAILQ */ + +#ifdef _KERNEL +extern struct disklist_head disklist; /* list of disks attached to system */ +extern int disk_count; /* number of disks in global disklist */ +extern int disk_change; /* disk attached/detached */ + +void disk_init(void); +int disk_construct(struct disk *); +void disk_attach(struct device *, struct disk *); +void disk_detach(struct disk *); +int disk_openpart(struct disk *, int, int, int); +void disk_closepart(struct disk *, int, int); +void disk_gone(int (*)(dev_t, int, int, struct proc *), int); +void disk_busy(struct disk *); +void disk_unbusy(struct disk *, long, daddr_t, int); + +int disk_lock(struct disk *); +void disk_lock_nointr(struct disk *); +void disk_unlock(struct disk *); +struct device *disk_lookup(struct cfdriver *, int); + +char *disk_readlabel(struct disklabel *, dev_t, char *, size_t); + +int disk_map(char *, char *, int, int); + +int duid_iszero(u_char *); +const char *duid_format(u_char *); +#endif -- cgit v1.2.3