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#ifndef LINUX_DNBD_CLISERV_H
#define LINUX_DNBD_CLISERV_H 1
#ifndef MODULE
#include <stdint.h>
#endif
#ifdef DNBD_USERSPACE
#include <bits/types.h>
#include <netinet/in.h>
#include <endian.h>
#include <byteswap.h>
/* host byte order <-> network byte order */
#if __BYTE_ORDER == __BIG_ENDIAN
#define ntohll(x) (x)
#else
#define ntohll(x) bswap_64(x)
#endif
#else
#include <linux/in.h>
#endif
#include <linux/types.h>
/* some constants */
#define DNBD_VERSION "0.9.0"
#define DNBD_PORT 5001
#define DNBD_MAGIC 0x19051979
#define DNBD_MAJOR 0
#define DNBD_UIDLEN 20
/* states */
#define DNBD_STATE_LOADED 1<<0
#define DNBD_STATE_CONFIGURED 1<<1
#define DNBD_STATE_RUNNING 1<<2
/* define ioctls */
#define DNBD_IOCTL_TYPE 0xac
#define DNBD_SET_SOCK _IO( DNBD_IOCTL_TYPE, 0)
#define DNBD_SET_GROUPNET _IO( DNBD_IOCTL_TYPE, 1)
#define DNBD_SET_BLKSIZE _IO( DNBD_IOCTL_TYPE, 2)
#define DNBD_SET_CAPACITY _IO( DNBD_IOCTL_TYPE, 3)
#define DNBD_SET_SERVERID _IO( DNBD_IOCTL_TYPE, 4)
#define DNBD_SET_CACHE _IO( DNBD_IOCTL_TYPE, 5)
#define DNBD_DO_IT _IO( DNBD_IOCTL_TYPE, 6)
#define DNBD_DISCONNECT _IO( DNBD_IOCTL_TYPE, 7)
/* define communication between server and client */
#define DNBD_CMD_MASK 0x07
#define DNBD_CMD_INIT 0x01
#define DNBD_CMD_READ 0x02
#define DNBD_CMD_HB 0x03
#define DNBD_CMD_CLI 0x08
#define DNBD_CMD_SRV 0x10
#define DNBD_TMR_OUT 0x0a
/* do not allign variables to 32bit etc.*/
#pragma pack(1)
struct dnbd_request {
uint32_t magic;
uint16_t id;
uint16_t cmd;
uint64_t pos;
uint16_t time;
uint16_t len;
};
#pragma pack()
#pragma pack(1)
struct dnbd_reply {
uint32_t magic;
uint16_t id;
uint16_t cmd;
uint64_t pos;
uint16_t time;
};
#pragma pack()
#pragma pack(1)
struct dnbd_reply_init {
uint32_t magic;
uint16_t id;
uint16_t cmd;
uint64_t capacity;
uint16_t time;
uint16_t blksize;
};
#pragma pack()
typedef struct dnbd_reply dnbd_reply_t;
typedef struct dnbd_reply_init dnbd_reply_init_t;
typedef struct dnbd_request dnbd_request_t;
struct dnbd_file {
const char *name;
int len;
};
#endif /* LINUX_DNBD_CLISERV_H */
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