| | {code} |
| | /******************************************************************************* |
| | |
| | vdrive.c |
| | |
| |  | Purpose: main source of Virtual Disk Drive |
| | |
| | Author: SB, RSJ Software GmbH |
| | |
| | Date: 10/2006 |
| | |
| | (c) Copyright 2006 by RSJ Software GmbH, Germering. All rights reserved. |
| | |
| | *******************************************************************************/ |
| | |
| | |
| | /*------ includes ------------------------------------------------------------*/ |
| | #include <stdlib.h> |
| | #include <windows.h> |
| | |
| | #include "abstractvd.h" |
| | #include "avdioctl.h" |
| | |
| | /*------ typedefs ------------------------------------------------------------*/ |
| | /******************************************************************************* |
| | |
| | VDRIVE_HANDLE |
| | |
| | *******************************************************************************/ |
| | typedef struct { |
| | AVD_HANDLE fileHandle; |
| | UINT64 fileSize; |
| | wchar_t fileName[_MAX_PATH+1]; |
| | } VDRIVE_HANDLE; |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdOpen() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdOpen(void *RequestContext, |
| | void **ImplContext, |
| | const wchar_t *Parms) |
| | { |
| | VDRIVE_HANDLE *vdhandle; |
| | AVD_RET avd_ret; |
| | wchar_t *cfsize; |
| | UINT64 fsize; |
| | wchar_t *fname_end; |
| | size_t fname_len; |
| | wchar_t *s; |
| | wchar_t parm_copy[2 * _MAX_PATH + 1]; |
| | |
 | | |
| | if (Parms == NULL || wcslen(Parms) > 2 * _MAX_PATH) { |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | wcscpy(parm_copy, Parms); |
| | |
| | fname_end = wcschr(parm_copy, ';'); |
| | if (fname_end) { |
| | *fname_end = 0x00; |
| | fname_len = wcslen(parm_copy); |
| | cfsize = fname_end + 1; |
| | } |
| | | fname_len = wcslen(parm_copy); |
| | |
| | if (fname_len > _MAX_PATH || cfsize == NULL || *cfsize == 0x00) { |
| | | if (fname_len > _MAX_PATH) { |
| | AvdDebugMessage(2, "AvdOpen(): Invalid Parms"); |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | /* determine filesize */ |
| | s = cfsize; |
| | while (*s != 0x00 && (*s < '0' || *s > '9')) { |
| | s++; |
| | } |
| | fsize = 0; |
| | |
| | while (*s != 0x00 && *s >= '0' && *s <= '9') { |
| | fsize = (UINT64) (10 * fsize + (*s - '0')) ; |
| | s++; |
| | } |
| | |
| | if ((avd_ret = AvdMemoryAlloc(&vdhandle, sizeof(VDRIVE_HANDLE))) != AVD_OK) { |
| | return(avd_ret); |
| | } |
| | |
| | wcscpy(vdhandle->fileName, parm_copy); |
| | |
| | if ((avd_ret = AvdFileOpen(&vdhandle->fileHandle, |
| | vdhandle->fileName)) != AVD_OK) { |
| | AvdDebugMessage(2, "AvdFileOpen() returned %d\n", (int) avd_ret); |
| | AvdMemoryFree(vdhandle); |
| | return(avd_ret); |
| | } |
| | |
| | vdhandle->fileSize = fsize * 1024 * 1024; |
| | |
| | AvdFileSizeGet(vdhandle->fileHandle, |
| | &(vdhandle->fileSize)); |
| | |
| | |
| | if ((avd_ret = AvdFileSizeSet(vdhandle->fileHandle, |
| | vdhandle->fileSize)) != AVD_OK) { |
| | AvdDebugMessage(2, |
| | "AvdFileSizeSet (%d) returned %d\n", |
| | (int) vdhandle->fileSize, |
| | (int) avd_ret); |
| | AvdFileClose(vdhandle->fileHandle); |
| | AvdMemoryFree(vdhandle); |
| | return(avd_ret); |
| | } |
| | |
| | *ImplContext = (void *) vdhandle; |
| | |
| | return(AVD_OK); |
| | } |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdClose() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdClose(void *RequestContext, void *ImplContext) |
| | { |
| | VDRIVE_HANDLE *vdhandle = (VDRIVE_HANDLE *) ImplContext; |
| | |
| | if (vdhandle == NULL) { |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | if (vdhandle->fileHandle) { |
| | AvdFileClose(vdhandle->fileHandle); |
| | } |
| | |
| | AvdMemoryFree(vdhandle); |
| | |
| | return(AVD_OK); |
| | } |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdGetMediaSize() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdGetMediaSize(void *RequestContext, |
| | void *ImplContext, |
| | UINT64 *MediaSize) |
| | | UINT64 *MediaSize, |
| | unsigned short *SectorsPerTrack, |
| | BOOLEAN *Writable) |
| | { |
| | VDRIVE_HANDLE *vdhandle = (VDRIVE_HANDLE *) ImplContext; |
| | |
| | if (vdhandle == NULL || |
| | !vdhandle->fileHandle) { |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | *MediaSize = vdhandle->fileSize; |
| | *Writable = TRUE; |
| | *SectorsPerTrack = 32; |
| | |
| | return(AVD_OK); |
| | } |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdRead() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdRead(void *RequestContext, |
| | void *ImplContext, |
| | unsigned char *Buffer, |
| | UINT64 Offset, |
| | size_t Length, |
| | size_t *BytesRead) |
| | { |
| | VDRIVE_HANDLE *vdhandle = (VDRIVE_HANDLE *) ImplContext; |
| | |
| | if (vdhandle == NULL || |
| | !vdhandle->fileHandle) { |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | return(AvdFileRead(Buffer, vdhandle->fileHandle, Offset, Length, BytesRead)); |
| | } |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdWrite() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdWrite(void *RequestContext, |
| | void *ImplContext, |
| | unsigned char *Buffer, |
| | UINT64 Offset, |
| | size_t Length, |
| | size_t *BytesWritten) |
| | { |
| | VDRIVE_HANDLE *vdhandle = (VDRIVE_HANDLE *) ImplContext; |
| | |
| | if (vdhandle == NULL || |
| | !vdhandle->fileHandle) { |
| | return(AVD_INVALID_PARAMETER); |
| | } |
| | |
| | return(AvdFileWrite(Buffer, vdhandle->fileHandle, Offset, Length, BytesWritten)); |
| | } |
| | |
| | |
| | /******************************************************************************* |
| | |
| | AvdCommmandInvoke() |
| | |
| | *******************************************************************************/ |
| | AVD_RET AVD_LINK AvdCommandInvoke (void *RequestContext, |
| | void *ImplContext, |
| | void *Request, |
| | size_t RequestLength, |
| | void *Response, |
| | size_t MaxResponseLen, |
| | size_t *ActualResponseLen) |
| | { |
| | *ActualResponseLen = 0; |
| | |
| | return(AVD_OK); |
| | } |
| | {code} |
