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util: storage: Store backing store format in virStorageSource 

We store the backing file string in the structure so we should also
store the format so that callers can be simplified.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2020-02-20 17:40:35 +01:00
parent 35d1f5bd14
commit 62539c5f7d
2 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
src/util/virstoragefile.c
View File

@ -935,15 +935,11 @@ virStorageFileGetEncryptionPayloadOffset(const struct FileEncryptionInfo *info,
static int
virStorageFileGetMetadataInternal(virStorageSourcePtr meta,
char *buf,
size_t len,
int *backingFormat)
size_t len)
{
int dummy;
int format;
size_t i;
if (!backingFormat)
backingFormat = &dummy;
VIR_DEBUG("path=%s, buf=%p, len=%zu, meta->format=%d",
meta->path, buf, len, meta->format);
@ -1009,8 +1005,10 @@ virStorageFileGetMetadataInternal(virStorageSourcePtr meta,
VIR_FREE(meta->backingStoreRaw);
if (fileTypeInfo[meta->format].getBackingStore != NULL) {
int store = fileTypeInfo[meta->format].getBackingStore(&meta->backingStoreRaw,
backingFormat,
&format,
buf, len);
meta->backingStoreRawFormat = format;
if (store == BACKING_STORE_INVALID)
return 0;
@ -1135,20 +1133,18 @@ virStorageFileGetMetadataFromBuf(const char *path,
int *backingFormat)
{
virStorageSourcePtr ret = NULL;
int dummy;
if (!backingFormat)
backingFormat = &dummy;
if (!(ret = virStorageFileMetadataNew(path, format)))
return NULL;
if (virStorageFileGetMetadataInternal(ret, buf, len,
backingFormat) < 0) {
if (virStorageFileGetMetadataInternal(ret, buf, len) < 0) {
virObjectUnref(ret);
return NULL;
}
if (backingFormat)
*backingFormat = ret->backingStoreRawFormat;
return ret;
}
@ -1211,9 +1207,12 @@ virStorageFileGetMetadataFromFD(const char *path,
return NULL;
}
if (virStorageFileGetMetadataInternal(meta, buf, len, backingFormat) < 0)
if (virStorageFileGetMetadataInternal(meta, buf, len) < 0)
return NULL;
if (backingFormat)
*backingFormat = meta->backingStoreRawFormat;
if (S_ISREG(sb.st_mode))
meta->type = VIR_STORAGE_TYPE_FILE;
else if (S_ISBLK(sb.st_mode))
@ -2293,6 +2292,7 @@ virStorageSourceCopy(const virStorageSource *src,
def->volume = g_strdup(src->volume);
def->relPath = g_strdup(src->relPath);
def->backingStoreRaw = g_strdup(src->backingStoreRaw);
def->backingStoreRawFormat = src->backingStoreRawFormat;
def->externalDataStoreRaw = g_strdup(src->externalDataStoreRaw);
def->snapshot = g_strdup(src->snapshot);
def->configFile = g_strdup(src->configFile);
@ -5000,7 +5000,6 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
unsigned int depth)
{
size_t headerLen;
int backingFormat;
int rv;
g_autofree char *buf = NULL;
g_autoptr(virStorageSource) backingStore = NULL;
@ -5018,7 +5017,7 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
&buf, &headerLen, cycle) < 0)
return -1;
if (virStorageFileGetMetadataInternal(src, buf, headerLen, &backingFormat) < 0)
if (virStorageFileGetMetadataInternal(src, buf, headerLen) < 0)
return -1;
if (src->backingStoreRaw) {
@ -5029,7 +5028,7 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
if (rv == 1)
return 0;
backingStore->format = backingFormat;
backingStore->format = src->backingStoreRawFormat;
if (backingStore->format == VIR_STORAGE_FILE_AUTO) {
/* Assuming the backing store to be raw can lead to failures. We do
@ -5180,7 +5179,7 @@ virStorageFileGetBackingStoreStr(virStorageSourcePtr src,
if (!(tmp = virStorageSourceCopy(src, false)))
return -1;
if (virStorageFileGetMetadataInternal(tmp, buf, headerLen, NULL) < 0)
if (virStorageFileGetMetadataInternal(tmp, buf, headerLen) < 0)
return -1;
*backing = g_steal_pointer(&tmp->backingStoreRaw);

1
src/util/virstoragefile.h
View File

@ -330,6 +330,7 @@ struct _virStorageSource {
/* Name of the child backing store recorded in metadata of the
* current file. */
char *backingStoreRaw;
virStorageFileFormat backingStoreRawFormat;
/* Name of the child data file recorded in metadata of the current file. */
char *externalDataStoreRaw;