libvirt/src/vbox/vbox_uniformed_api.h
Taowei 7e052265c9 vbox: Rewrite vboxDomainSave
All vbox objects are child objects from the nsISupports in vbox's
C++ API version. Since the CAPI is generated from the C++ API, I
kept their relationship here, by the definitations below:

typedef struct nsISupports nsISupports;
typedef nsISupports IVirtualBox;
typedef nsISupports ISession;
and so on...

So, when calling the API from nsISupports, we don't need to do
typecasting, and things work still work well.
2014-08-15 09:25:09 +02:00

237 lines
8.3 KiB
C

/*
* Copyright 2014, Taowei Luo (uaedante@gmail.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef VBOX_UNIFORMED_API_H
# define VBOX_UNIFORMED_API_H
# include "internal.h"
/* This file may be used in three place. That is vbox_tmpl.c,
* vbox_common.c and vbox_driver.c. The vboxUniformedAPI and some
* types used for vboxUniformedAPI is defined here.
*
* The vbox_tmpl.c is the only place where the driver knows the inside
* architecture of those vbox structs(vboxObj, vboxSession,
* pFuncs, vboxCallback and vboxQueue). The file should be included
* after the currect vbox_CAPI_v*.h, then we can use the vbox structs
* in vboxGlobalData. The vbox_tmpl.c should implement functions
* defined in vboxUniformedAPI.
*
* In vbox_driver.c, it is used to define the struct vboxUniformedAPI.
* The vbox_driver.c collects vboxUniformedAPI for all versions.
* Then vboxRegister calls the vboxRegisterUniformedAPI to register.
* Note: In vbox_driver.c, the vbox structs in vboxGlobalData is
* defined by vbox_CAPI_v2.2.h.
*
* The vbox_common.c, it is used to generate common codes for all vbox
* versions. Bacause the same member varible's offset in a vbox struct
* may change between different vbox versions. The vbox_common.c
* shouldn't directly use struct's member varibles defined in
* vbox_CAPI_v*.h. To make things safety, we include the
* vbox_common.h in vbox_common.c. In this case, we treat structs
* defined by vbox as a void*. The common codes don't concern about
* the inside of this structs(actually, we can't, in the common level).
* With the help of vboxUniformed API, we call VirtualBox's API and
* implement the vbox driver in a high level.
*
* In conclusion:
* * In vbox_tmpl.c, this file is included after vbox_CAPI_v*.h
* * In vbox_driver.c, this file is included after vbox_glue.h
* * In vbox_common.c, this file is included after vbox_common.h
*
*/
/* Extracted define from vbox_tmpl.c */
# ifdef WIN32
struct _vboxIID_v2_x_WIN32 {
/* IID is represented by a GUID value. */
GUID value;
};
# endif /* !WIN32 */
struct _vboxIID_v2_x {
/* IID is represented by a pointer to a nsID. */
nsID *value;
/* backing is used in cases where we need to create or copy an IID.
* We cannot allocate memory that can be freed by ComUnallocMem.
* Therefore, we use this stack allocated nsID instead. */
nsID backing;
};
struct _vboxIID_v3_x {
/* IID is represented by a UTF-16 encoded UUID in string form. */
PRUnichar *value;
/* owner indicates if we own the value and need to free it. */
bool owner;
};
typedef union {
# ifdef WIN32
struct _vboxIID_v2_x_WIN32 vboxIID_v2_x_WIN32;
# endif /* !WIN32 */
struct _vboxIID_v2_x vboxIID_v2_x;
struct _vboxIID_v3_x vboxIID_v3_x;
} vboxIIDUnion;
typedef union {
nsresult uResultCode;
PRInt32 resultCode;
} resultCodeUnion;
typedef struct {
virMutex lock;
unsigned long version;
virCapsPtr caps;
virDomainXMLOptionPtr xmlopt;
IVirtualBox *vboxObj;
ISession *vboxSession;
/** Our version specific API table pointer. */
PCVBOXXPCOM pFuncs;
/* The next is used for domainEvent */
# if defined(VBOX_API_VERSION) && VBOX_API_VERSION > 2002000 && VBOX_API_VERSION < 4000000
/* Async event handling */
virObjectEventStatePtr domainEvents;
int fdWatch;
IVirtualBoxCallback *vboxCallback;
nsIEventQueue *vboxQueue;
int volatile vboxCallBackRefCount;
/* pointer back to the connection */
virConnectPtr conn;
# else /* VBOX_API_VERSION <= 2002000 || VBOX_API_VERSION >= 4000000 || VBOX_API_VERSION undefined */
virObjectEventStatePtr domainEvents;
int fdWatch;
void *vboxCallback;
void *vboxQueue;
int volatile vboxCallBackRefCount;
virConnectPtr conn;
# endif /* VBOX_API_VERSION <= 2002000 || VBOX_API_VERSION >= 4000000 || VBOX_API_VERSION undefined */
} vboxGlobalData;
/* vboxUniformedAPI gives vbox_common.c a uniformed layer to see
* vbox API.
*/
/* Functions for pFuncs */
typedef struct {
int (*Initialize)(vboxGlobalData *data);
void (*Uninitialize)(vboxGlobalData *data);
void (*ComUnallocMem)(PCVBOXXPCOM pFuncs, void *pv);
void (*Utf16Free)(PCVBOXXPCOM pFuncs, PRUnichar *pwszString);
void (*Utf8Free)(PCVBOXXPCOM pFuncs, char *pszString);
int (*Utf16ToUtf8)(PCVBOXXPCOM pFuncs, const PRUnichar *pwszString, char **ppszString);
int (*Utf8ToUtf16)(PCVBOXXPCOM pFuncs, const char *pszString, PRUnichar **ppwszString);
} vboxUniformedPFN;
/* Functions for vboxIID */
typedef struct {
void (*vboxIIDInitialize)(vboxIIDUnion *iidu);
void (*vboxIIDUnalloc)(vboxGlobalData *data, vboxIIDUnion *iidu);
void (*vboxIIDToUUID)(vboxGlobalData *data, vboxIIDUnion *iidu, unsigned char *uuid);
void (*vboxIIDFromUUID)(vboxGlobalData *data, vboxIIDUnion *iidu, const unsigned char *uuid);
bool (*vboxIIDIsEqual)(vboxGlobalData *data, vboxIIDUnion *iidu1, vboxIIDUnion *iidu2);
void (*vboxIIDFromArrayItem)(vboxGlobalData *data, vboxIIDUnion *iidu, vboxArray *array, int idx);
void (*DEBUGIID)(const char *msg, vboxIIDUnion *iidu);
} vboxUniformedIID;
/* Functions for nsISupports */
typedef struct {
nsresult (*Release)(nsISupports *nsi);
} vboxUniformednsISupports;
/* Functions for IVirtualBox */
typedef struct {
nsresult (*GetVersion)(IVirtualBox *vboxObj, PRUnichar **versionUtf16);
nsresult (*GetMachine)(IVirtualBox *vboxObj, vboxIIDUnion *iidu, IMachine **machine);
} vboxUniformedIVirtualBox;
/* Functions for ISession */
typedef struct {
nsresult (*OpenExisting)(vboxGlobalData *data, vboxIIDUnion *iidu, IMachine *machine);
nsresult (*GetConsole)(ISession *session, IConsole **console);
nsresult (*Close)(ISession *session);
} vboxUniformedISession;
/* Functions for IConsole */
typedef struct {
nsresult (*SaveState)(IConsole *console, IProgress **progress);
} vboxUniformedIConsole;
/* Functions for IProgress */
typedef struct {
nsresult (*WaitForCompletion)(IProgress *progress, PRInt32 timeout);
nsresult (*GetResultCode)(IProgress *progress, resultCodeUnion *resultCode);
} vboxUniformedIProgress;
typedef struct {
/* vbox API version */
uint32_t APIVersion;
uint32_t XPCOMCVersion;
/* vbox APIs */
int (*initializeDomainEvent)(vboxGlobalData *data);
void (*registerGlobalData)(vboxGlobalData *data);
vboxUniformedPFN UPFN;
vboxUniformedIID UIID;
vboxUniformednsISupports nsUISupports;
vboxUniformedIVirtualBox UIVirtualBox;
vboxUniformedISession UISession;
vboxUniformedIConsole UIConsole;
vboxUniformedIProgress UIProgress;
/* vbox API features */
bool domainEventCallbacks;
bool hasStaticGlobalData;
bool getMachineForSession;
} vboxUniformedAPI;
/* libvirt API
* These API would be removed after we generate the
* vboxDriver in common code.
*/
virDrvOpenStatus vboxConnectOpen(virConnectPtr conn,
virConnectAuthPtr auth,
unsigned int flags);
int vboxConnectClose(virConnectPtr conn);
int vboxDomainSave(virDomainPtr dom, const char *path);
/* Version specified functions for installing uniformed API */
void vbox22InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox30InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox31InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox32InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox40InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox41InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox42InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox42_20InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox43InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
void vbox43_4InstallUniformedAPI(vboxUniformedAPI *pVBoxAPI);
#endif /* VBOX_UNIFORMED_API_H */