/**
* Internal. Free all allocated space for representing an image except pImage,
* and optionally delete the image from disk.
*/
static int rawFreeImage(PRAWIMAGE pImage, bool fDelete)
{
int rc = VINF_SUCCESS;
/* Freeing a never allocated image (e.g. because the open failed) is
* not signalled as an error. After all nothing bad happens. */
if (pImage)
{
if (pImage->pStorage)
{
/* No point updating the file that is deleted anyway. */
if (!fDelete)
{
/* For newly created images in sequential mode fill it to
* the nominal size. */
if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
&& !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
&& pImage->fCreate)
{
/* Fill rest of image with zeroes, a must for sequential
* images to reach the nominal size. */
uint64_t uOff;
void *pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE);
if (RT_LIKELY(pvBuf))
{
uOff = pImage->offAccess;
/* Write data to all image blocks. */
while (uOff < pImage->cbSize)
{
unsigned cbChunk = (unsigned)RT_MIN(pImage->cbSize - uOff,
RAW_FILL_SIZE);
rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
uOff, pvBuf, cbChunk);
if (RT_FAILURE(rc))
break;
uOff += cbChunk;
}
RTMemTmpFree(pvBuf);
}
else
rc = VERR_NO_MEMORY;
}
rawFlushImage(pImage);
}
rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
pImage->pStorage = NULL;
}
if (fDelete && pImage->pszFilename)
vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
}
LogFlowFunc(("returns %Rrc\n", rc));
return rc;
}
/** @copydoc VBOXHDDBACKEND::pfnFlush */
static int rawFlush(void *pBackendData)
{
LogFlowFunc(("pBackendData=%#p\n", pBackendData));
PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
int rc;
rc = rawFlushImage(pImage);
LogFlowFunc(("returns %Rrc\n", rc));
return rc;
}
/**
* Internal: Create a raw image.
*/
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
unsigned uImageFlags, const char *pszComment,
PCVDGEOMETRY pPCHSGeometry,
PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
PFNVDPROGRESS pfnProgress, void *pvUser,
unsigned uPercentStart, unsigned uPercentSpan)
{
int rc;
RTFOFF cbFree = 0;
int32_t fOpen;
uImageFlags |= VD_IMAGE_FLAGS_FIXED;
pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
pImage->uImageFlags = uImageFlags;
pImage->fCreate = true;
pImage->PCHSGeometry = *pPCHSGeometry;
pImage->LCHSGeometry = *pLCHSGeometry;
pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
{
rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
goto out;
}
/* Create image file. */
fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
fOpen &= ~RTFILE_O_READ;
rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
if (RT_FAILURE(rc))
{
rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
goto out;
}
if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
{
/* Check the free space on the disk and leave early if there is not
* sufficient space available. */
rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbSize))
{
rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
goto out;
}
/* Allocate & commit whole file if fixed image, it must be more
* effective than expanding file by write operations. */
rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize,
0 /* fFlags */, pfnProgress, pvUser, uPercentStart, uPercentSpan);
}
if (RT_SUCCESS(rc) && pfnProgress)
pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);
pImage->cbSize = cbSize;
rc = rawFlushImage(pImage);
out:
if (RT_SUCCESS(rc) && pfnProgress)
pfnProgress(pvUser, uPercentStart + uPercentSpan);
if (RT_FAILURE(rc))
rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
return rc;
}
/**
* Internal: Create a raw image.
*/
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
unsigned uImageFlags, const char *pszComment,
PCVDGEOMETRY pPCHSGeometry,
PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
PFNVDPROGRESS pfnProgress, void *pvUser,
unsigned uPercentStart, unsigned uPercentSpan)
{
int rc;
RTFOFF cbFree = 0;
uint64_t uOff;
void *pvBuf = NULL;
int32_t fOpen;
uImageFlags |= VD_IMAGE_FLAGS_FIXED;
pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
pImage->uImageFlags = uImageFlags;
pImage->fCreate = true;
pImage->PCHSGeometry = *pPCHSGeometry;
pImage->LCHSGeometry = *pLCHSGeometry;
pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
{
rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
goto out;
}
/* Create image file. */
fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
fOpen &= ~RTFILE_O_READ;
rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
if (RT_FAILURE(rc))
{
rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
goto out;
}
if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
{
/* Check the free space on the disk and leave early if there is not
* sufficient space available. */
rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbSize))
{
rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
goto out;
}
/* Allocate & commit whole file if fixed image, it must be more
* effective than expanding file by write operations. */
rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, cbSize);
if (RT_FAILURE(rc))
{
rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: setting image size failed for '%s'"), pImage->pszFilename);
goto out;
}
/* Fill image with zeroes. We do this for every fixed-size image since
* on some systems (for example Windows Vista), it takes ages to write
* a block near the end of a sparse file and the guest could complain
* about an ATA timeout. */
pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE);
if (!pvBuf)
{
rc = VERR_NO_MEMORY;
goto out;
}
uOff = 0;
/* Write data to all image blocks. */
while (uOff < cbSize)
{
unsigned cbChunk = (unsigned)RT_MIN(cbSize, RAW_FILL_SIZE);
rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, uOff,
pvBuf, cbChunk, NULL);
if (RT_FAILURE(rc))
{
rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: writing block failed for '%s'"), pImage->pszFilename);
goto out;
}
uOff += cbChunk;
if (pfnProgress)
{
rc = pfnProgress(pvUser,
uPercentStart + uOff * uPercentSpan * 98 / (cbSize * 100));
if (RT_FAILURE(rc))
goto out;
}
}
}
if (RT_SUCCESS(rc) && pfnProgress)
pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);
pImage->cbSize = cbSize;
rc = rawFlushImage(pImage);
out:
if (pvBuf)
RTMemTmpFree(pvBuf);
if (RT_SUCCESS(rc) && pfnProgress)
pfnProgress(pvUser, uPercentStart + uPercentSpan);
if (RT_FAILURE(rc))
rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
return rc;
}
/**
* Internal: Create a raw image.
*/
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
unsigned uImageFlags, const char *pszComment,
PCVDGEOMETRY pPCHSGeometry,
PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
PVDINTERFACEPROGRESS pIfProgress,
unsigned uPercentStart, unsigned uPercentSpan)
{
RT_NOREF1(pszComment);
int rc = VINF_SUCCESS;
pImage->fCreate = true;
pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
pImage->uImageFlags = uImageFlags | VD_IMAGE_FLAGS_FIXED;
pImage->PCHSGeometry = *pPCHSGeometry;
pImage->LCHSGeometry = *pLCHSGeometry;
pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
if (!(pImage->uImageFlags & VD_IMAGE_FLAGS_DIFF))
{
/* Create image file. */
uint32_t fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
fOpen &= ~RTFILE_O_READ;
rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
if (RT_SUCCESS(rc))
{
if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
{
RTFOFF cbFree = 0;
/* Check the free space on the disk and leave early if there is not
* sufficient space available. */
rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
if (RT_FAILURE(rc) /* ignore errors */ || ((uint64_t)cbFree >= cbSize))
{
rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize, 0 /* fFlags */,
pIfProgress, uPercentStart, uPercentSpan);
if (RT_SUCCESS(rc))
{
vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 98 / 100);
pImage->cbSize = cbSize;
rc = rawFlushImage(pImage);
}
}
else
rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
}
}
else
rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
}
else
rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
if (RT_SUCCESS(rc))
vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
if (RT_FAILURE(rc))
rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
return rc;
}