1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/******************************************************************************
* xl_block.h
*
* Shared definitions between all levels of XenoLinux Virtual block devices.
*/
#ifndef __XL_BLOCK_H__
#define __XL_BLOCK_H__
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/hdreg.h>
#include <linux/blkdev.h>
#include <linux/major.h>
#include <asm/hypervisor-ifs/hypervisor-if.h>
#include <asm/hypervisor-ifs/vbd.h>
#include <asm/io.h>
#include <asm/atomic.h>
#include <asm/uaccess.h>
#if 0
#define DPRINTK(_f, _a...) printk ( KERN_ALERT _f , ## _a )
#else
#define DPRINTK(_f, _a...) ((void)0)
#endif
#if 0
#define DPRINTK_IOCTL(_f, _a...) printk ( KERN_ALERT _f , ## _a )
#else
#define DPRINTK_IOCTL(_f, _a...) ((void)0)
#endif
/* Private gendisk->flags[] values. */
#define GENHD_FL_XENO 2 /* Is unit a Xen block device? */
#define GENHD_FL_VIRT_PARTNS 4 /* Are unit partitions virtual? */
/*
* We have one of these per vbd, whether ide, scsi or 'other'.
* They hang in an array off the gendisk structure. We may end up putting
* all kinds of interesting stuff here :-)
*/
typedef struct xl_disk {
int usage;
} xl_disk_t;
/* Generic layer. */
extern int xenolinux_control_msg(int operration, char *buffer, int size);
extern int xenolinux_block_open(struct inode *inode, struct file *filep);
extern int xenolinux_block_release(struct inode *inode, struct file *filep);
extern int xenolinux_block_ioctl(struct inode *inode, struct file *filep,
unsigned command, unsigned long argument);
extern int xenolinux_block_check(kdev_t dev);
extern int xenolinux_block_revalidate(kdev_t dev);
extern void do_xlblk_request (request_queue_t *rq);
/* Virtual block-device subsystem. */
extern int xlvbd_init(xen_disk_info_t *xdi);
extern void xlvbd_cleanup(void);
#endif /* __XL_BLOCK_H__ */
|
