FreeBSD/Linux Kernel Cross Reference
sys/geom/geom_disk.h
1 /*-
2 * Copyright (c) 2003 Poul-Henning Kamp
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
6 * and NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The names of the authors may not be used to endorse or promote
19 * products derived from this software without specific prior written
20 * permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $FreeBSD: releng/5.2/sys/geom/geom_disk.h 112988 2003-04-02 20:41:18Z phk $
35 */
36
37 #ifndef _GEOM_GEOM_DISK_H_
38 #define _GEOM_GEOM_DISK_H_
39
40 #ifdef _KERNEL
41
42 #include <sys/queue.h>
43 #include <sys/_lock.h>
44 #include <sys/_mutex.h>
45
46 typedef int disk_open_t(struct disk *);
47 typedef int disk_close_t(struct disk *);
48 typedef void disk_strategy_t(struct bio *bp);
49 typedef int disk_ioctl_t(struct disk *, u_long cmd, void *data,
50 int fflag, struct thread *td);
51 /* NB: disk_ioctl_t SHALL be cast'able to d_ioctl_t */
52
53 struct g_geom;
54 struct devstat;
55
56 struct disk {
57 /* Fields which are private to geom_disk */
58 struct g_geom *d_geom;
59 struct devstat *d_devstat;
60
61 /* Shared fields */
62 u_int d_flags;
63 const char *d_name;
64 u_int d_unit;
65 struct bio_queue_head *d_queue;
66 struct mtx *d_lock;
67
68 /* Disk methods */
69 disk_open_t *d_open;
70 disk_close_t *d_close;
71 disk_strategy_t *d_strategy;
72 disk_ioctl_t *d_ioctl;
73 dumper_t *d_dump;
74
75 /* Info fields from driver to geom_disk.c. Valid when open */
76 u_int d_sectorsize;
77 off_t d_mediasize;
78 u_int d_fwsectors;
79 u_int d_fwheads;
80 u_int d_maxsize;
81 u_int d_stripeoffset;
82 u_int d_stripesize;
83
84 /* Fields private to the driver */
85 void *d_drv1;
86 };
87
88 #define DISKFLAG_NOGIANT 0x1
89 #define DISKFLAG_OPEN 0x2
90 #define DISKFLAG_CANDELETE 0x4
91
92 void disk_create(int unit, struct disk *disk, int flags, void *unused, void *unused2);
93 void disk_destroy(struct disk *disk);
94
95
96 #endif /* _KERNEL */
97 #endif /* _GEOM_GEOM_DISK_H_ */
Cache object: 7b7285b1f685971259aff2b8d6c1429e
|