2 * Copyright (c) 2003 Poul-Henning Kamp
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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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
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
37 #ifndef _GEOM_GEOM_DISK_H_
38 #define _GEOM_GEOM_DISK_H_
42 #include <sys/queue.h>
43 #include <sys/_lock.h>
44 #include <sys/_mutex.h>
49 typedef int disk_open_t(struct disk *);
50 typedef int disk_close_t(struct disk *);
51 typedef void disk_strategy_t(struct bio *bp);
52 typedef int disk_ioctl_t(struct disk *, u_long cmd, void *data,
53 int fflag, struct thread *td);
54 /* NB: disk_ioctl_t SHALL be cast'able to d_ioctl_t */
60 /* Fields which are private to geom_disk */
61 struct g_geom *d_geom;
62 struct devstat *d_devstat;
69 struct bio_queue_head *d_queue;
74 disk_close_t *d_close;
75 disk_strategy_t *d_strategy;
76 disk_ioctl_t *d_ioctl;
79 /* Info fields from driver to geom_disk.c. Valid when open */
87 char d_ident[DISK_IDENT_SIZE];
89 /* Fields private to the driver */
93 #define DISKFLAG_NEEDSGIANT 0x1
94 #define DISKFLAG_OPEN 0x2
95 #define DISKFLAG_CANDELETE 0x4
96 #define DISKFLAG_CANFLUSHCACHE 0x8
98 struct disk *disk_alloc(void);
99 void disk_create(struct disk *disk, int version);
100 void disk_destroy(struct disk *disk);
101 void disk_gone(struct disk *disk);
103 #define DISK_VERSION_00 0x58561059
104 #define DISK_VERSION_01 0x5856105a
105 #define DISK_VERSION DISK_VERSION_01
108 #endif /* _GEOM_GEOM_DISK_H_ */