6:29 a.m.
Now that we have pointers to store disk source information and thus can
easily exchange the structs behind we need a function to copy all the
data.
---
src/libvirt_private.syms | 1 +
src/util/virstoragefile.c | 194 ++++++++++++++++++++++++++++++++++++++++++++--
src/util/virstoragefile.h | 3 +
3 files changed, 190 insertions(+), 8 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 29e9db9..918b6d2 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1919,6 +1919,7 @@ virStorageNetHostTransportTypeToString;
virStorageNetProtocolTypeToString;
virStorageSourceBackingStoreClear;
virStorageSourceClear;
+virStorageSourceCopy;
virStorageSourceFree;
virStorageSourceGetActualType;
virStorageSourceGetSecurityLabelDef;
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 9208b77..3037435 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -1719,6 +1719,189 @@ virStorageSourceGetSecurityLabelDef(virStorageSourcePtr src,
}
+static void
+virStorageSourceSeclabelsClear(virStorageSourcePtr def)
+{
+ size_t i;
+
+ if (def->seclabels) {
+ for (i = 0; i < def->nseclabels; i++)
+ virSecurityDeviceLabelDefFree(def->seclabels[i]);
+ VIR_FREE(def->seclabels);
+ }
+}
+
+
+static int
+virStorageSourceSeclabelsCopy(virStorageSourcePtr to,
+ const virStorageSource *from)
+{
+ size_t i;
+
+ if (from->nseclabels == 0)
+ return 0;
+
+ if (VIR_ALLOC_N(to->seclabels, from->nseclabels) < 0)
+ return -1;
+ to->nseclabels = from->nseclabels;
+
+ for (i = 0; i < to->nseclabels; i++) {
+ if (!(to->seclabels[i] =
virSecurityDeviceLabelDefCopy(from->seclabels[i])))
+ goto error;
+ }
+
+ return 0;
+
+ error:
+ virStorageSourceSeclabelsClear(to);
+ return -1;
+}
+
+
+static virStorageTimestampsPtr
+virStorageTimestampsCopy(const virStorageTimestamps *src)
+{
+ virStorageTimestampsPtr ret;
+
+ if (VIR_ALLOC(ret) < 0)
+ return NULL;
+
+ memcpy(ret, src, sizeof(*src));
+
+ return ret;
+}
+
+
+static virStoragePermsPtr
+virStoragePermsCopy(const virStoragePerms *src)
+{
+ virStoragePermsPtr ret;
+
+ if (VIR_ALLOC(ret) < 0)
+ return NULL;
+
+ ret->mode = src->mode;
+ ret->uid = src->uid;
+ ret->gid = src->gid;
+
+ if (VIR_STRDUP(ret->label, src->label))
+ goto error;
+
+ return ret;
+
+ error:
+ virStoragePermsFree(ret);
+ return NULL;
+}
+
+
+static virStorageSourcePoolDefPtr
+virStorageSourcePoolDefCopy(const virStorageSourcePoolDef *src)
+{
+ virStorageSourcePoolDefPtr ret;
+
+ if (VIR_ALLOC(ret) < 0)
+ return NULL;
+
+ ret->voltype = src->voltype;
+ ret->pooltype = src->pooltype;
+ ret->actualtype = src->actualtype;
+ ret->mode = src->mode;
+
+ if (VIR_STRDUP(ret->pool, src->pool) < 0 ||
+ VIR_STRDUP(ret->volume, src->volume) < 0)
+ goto error;
+
+ return ret;
+
+ error:
+ virStorageSourcePoolDefFree(ret);
+ return NULL;
+}
+
+
+/**
+ * virStorageSourcePtr:
+ *
+ * Deep-copies a virStorageSource structure. If @backing chain is true
+ * then also copies the backing chain recursively, otherwise just
+ * the top element is copied. This function doesn't copy the
+ * storage driver access structure and thus the struct needs to be initialized
+ * separately.
+ */
+virStorageSourcePtr
+virStorageSourceCopy(const virStorageSource *src,
+ bool backingChain)
+{
+ virStorageSourcePtr ret = NULL;
+
+ if (VIR_ALLOC(ret) < 0)
+ return NULL;
+
+ ret->type = src->type;
+ ret->protocol = src->protocol;
+ ret->format = src->format;
+ ret->allocation = src->allocation;
+ ret->capacity = src->capacity;
+ ret->readonly = src->readonly;
+ ret->shared = src->shared;
+
+ /* storage driver metadata are not copied */
+ ret->drv = NULL;
+
+ if (VIR_STRDUP(ret->path, src->path) < 0 ||
+ VIR_STRDUP(ret->volume, src->volume) < 0 ||
+ VIR_STRDUP(ret->driverName, src->driverName) < 0 ||
+ VIR_STRDUP(ret->relPath, src->relPath) < 0 ||
+ VIR_STRDUP(ret->backingStoreRaw, src->backingStoreRaw) < 0 ||
+ VIR_STRDUP(ret->compat, src->compat) < 0)
+ goto error;
+
+ if (!(ret->hosts = virStorageNetHostDefCopy(src->nhosts, src->hosts)))
+ goto error;
+ ret->nhosts = src->nhosts;
+
+ if (src->srcpool &&
+ !(ret->srcpool = virStorageSourcePoolDefCopy(src->srcpool)))
+ goto error;
+
+ if (src->features &&
+ !(ret->features = virBitmapNewCopy(src->features)))
+ goto error;
+
+ if (src->encryption &&
+ !(ret->encryption = virStorageEncryptionCopy(src->encryption)))
+ goto error;
+
+ if (src->perms &&
+ !(ret->perms = virStoragePermsCopy(src->perms)))
+ goto error;
+
+ if (src->timestamps &&
+ !(ret->timestamps = virStorageTimestampsCopy(src->timestamps)))
+ goto error;
+
+ if (virStorageSourceSeclabelsCopy(ret, src) < 0)
+ goto error;
+
+ if (src->auth &&
+ !(ret->auth = virStorageAuthDefCopy(src->auth)))
+ goto error;
+
+ if (backingChain && src->backingStore) {
+ if (!(ret->backingStore = virStorageSourceCopy(src->backingStore,
+ true)))
+ goto error;
+ }
+
+ return ret;
+
+ error:
+ virStorageSourceFree(ret);
+ return NULL;
+}
+
+
void
virStorageSourcePoolDefFree(virStorageSourcePoolDefPtr def)
{
@@ -1771,11 +1954,11 @@ virStorageSourceBackingStoreClear(virStorageSourcePtr def)
}
+
+
void
virStorageSourceClear(virStorageSourcePtr def)
{
- size_t i;
-
if (!def)
return;
@@ -1786,12 +1969,7 @@ virStorageSourceClear(virStorageSourcePtr def)
virBitmapFree(def->features);
VIR_FREE(def->compat);
virStorageEncryptionFree(def->encryption);
-
- if (def->seclabels) {
- for (i = 0; i < def->nseclabels; i++)
- virSecurityDeviceLabelDefFree(def->seclabels[i]);
- VIR_FREE(def->seclabels);
- }
+ virStorageSourceSeclabelsClear(def);
virStoragePermsFree(def->perms);
VIR_FREE(def->timestamps);
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 63950ec..5c0460b 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -349,6 +349,9 @@ bool virStorageSourceIsLocalStorage(virStorageSourcePtr src);
void virStorageSourceFree(virStorageSourcePtr def);
void virStorageSourceBackingStoreClear(virStorageSourcePtr def);
virStorageSourcePtr virStorageSourceNewFromBacking(virStorageSourcePtr parent);
+virStorageSourcePtr virStorageSourceCopy(const virStorageSource *src,
+ bool backingChain)
+ ATTRIBUTE_NONNULL(1);
typedef int
(*virStorageFileSimplifyPathReadlinkCallback)(const char *path,
--
1.9.3