[libvirt] [PATCH v2 02/11] snapshot: Give virDomainSnapshotDefFormat its own flags
Eric Blake
eblake at redhat.com
Sat Feb 23 21:24:36 UTC 2019
virDomainSnapshotDefFormat currently takes two sets of knobs:
an 'unsigned int flags' argument that can currently just be
VIR_DOMAIN_DEF_FORMAT_SECURE, and an 'int internal' argument used as
a bool to determine whether to output an additional element. It
then reuses the 'flags' knob to call into virDomainDefFormatInternal(),
which takes a different set of flags. In fact, prior to commit 0ecd6851
(1.2.12), the 'flags' argument actually took the public
VIR_DOMAIN_XML_SECURE, which was even more confusing. Let's borrow
from the style of that earlier commit, by introducing a function
for translating from the public flags (VIR_DOMAIN_SNAPSHOT_XML_SECURE
was just recently introduced) into a new enum specific to snapshot
formatting, and adjust all callers to use snapshot-specific enum
values when formatting, and where the formatter now uses a new
variable 'domainflags' to make it obvious when we are translating
from snapshot flags back to domain flags. We don't even have to
use the conversion function for drivers that don't accept the
public VIR_DOMAIN_SNAPSHOT_XML_SECURE flag.
Signed-off-by: Eric Blake <eblake at redhat.com>
---
src/conf/snapshot_conf.h | 10 ++++++++--
src/conf/snapshot_conf.c | 28 ++++++++++++++++++++++------
src/esx/esx_driver.c | 1 -
src/libvirt_private.syms | 1 +
src/qemu/qemu_domain.c | 3 +--
src/qemu/qemu_driver.c | 3 +--
src/test/test_driver.c | 3 +--
src/vbox/vbox_common.c | 5 ++---
src/vz/vz_driver.c | 3 +--
tests/domainsnapshotxml2xmltest.c | 16 +++++++++-------
10 files changed, 46 insertions(+), 27 deletions(-)
diff --git a/src/conf/snapshot_conf.h b/src/conf/snapshot_conf.h
index 7a175dfc96..4d6e6134a3 100644
--- a/src/conf/snapshot_conf.h
+++ b/src/conf/snapshot_conf.h
@@ -101,6 +101,13 @@ typedef enum {
VIR_DOMAIN_SNAPSHOT_PARSE_OFFLINE = 1 << 3,
} virDomainSnapshotParseFlags;
+typedef enum {
+ VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE = 1 << 0,
+ VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL = 1 << 1,
+} virDomainSnapshotFormatFlags;
+
+unsigned int virDomainSnapshotFormatConvertXMLFlags(unsigned int flags);
+
virDomainSnapshotDefPtr virDomainSnapshotDefParseString(const char *xmlStr,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
@@ -115,8 +122,7 @@ char *virDomainSnapshotDefFormat(const char *uuidstr,
virDomainSnapshotDefPtr def,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
- unsigned int flags,
- int internal);
+ unsigned int flags);
int virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr snapshot,
int default_snapshot,
bool require_match);
diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c
index 3372c4df86..652d963f84 100644
--- a/src/conf/snapshot_conf.c
+++ b/src/conf/snapshot_conf.c
@@ -652,6 +652,19 @@ virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr def,
return ret;
}
+/* Converts public VIR_DOMAIN_SNAPSHOT_XML_* into
+ * VIR_DOMAIN_SNAPSHOT_FORMAT_* flags, and silently ignores any other
+ * flags. */
+unsigned int virDomainSnapshotFormatConvertXMLFlags(unsigned int flags)
+{
+ unsigned int formatFlags = 0;
+
+ if (flags & VIR_DOMAIN_SNAPSHOT_XML_SECURE)
+ formatFlags |= VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE;
+
+ return formatFlags;
+}
+
static int
virDomainSnapshotDiskDefFormat(virBufferPtr buf,
virDomainSnapshotDiskDefPtr disk,
@@ -692,15 +705,17 @@ virDomainSnapshotDefFormat(const char *uuidstr,
virDomainSnapshotDefPtr def,
virCapsPtr caps,
virDomainXMLOptionPtr xmlopt,
- unsigned int flags,
- int internal)
+ unsigned int flags)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
size_t i;
+ int domainflags = VIR_DOMAIN_DEF_FORMAT_INACTIVE;
- virCheckFlags(VIR_DOMAIN_DEF_FORMAT_SECURE, NULL);
+ virCheckFlags(VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE |
+ VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL, NULL);
- flags |= VIR_DOMAIN_DEF_FORMAT_INACTIVE;
+ if (flags & VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE)
+ domainflags |= VIR_DOMAIN_DEF_FORMAT_SECURE;
virBufferAddLit(&buf, "<domainsnapshot>\n");
virBufferAdjustIndent(&buf, 2);
@@ -742,7 +757,8 @@ virDomainSnapshotDefFormat(const char *uuidstr,
}
if (def->dom) {
- if (virDomainDefFormatInternal(def->dom, caps, flags, &buf, xmlopt) < 0)
+ if (virDomainDefFormatInternal(def->dom, caps, domainflags, &buf,
+ xmlopt) < 0)
goto error;
} else if (uuidstr) {
virBufferAddLit(&buf, "<domain>\n");
@@ -756,7 +772,7 @@ virDomainSnapshotDefFormat(const char *uuidstr,
virDomainXMLOptionGetSaveCookie(xmlopt)) < 0)
goto error;
- if (internal)
+ if (flags & VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL)
virBufferAsprintf(&buf, "<active>%d</active>\n", def->current);
virBufferAdjustIndent(&buf, -2);
diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c
index 379c2bae73..8ddfa93847 100644
--- a/src/esx/esx_driver.c
+++ b/src/esx/esx_driver.c
@@ -4204,7 +4204,6 @@ esxDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
virUUIDFormat(snapshot->domain->uuid, uuid_string);
xml = virDomainSnapshotDefFormat(uuid_string, &def, priv->caps, priv->xmlopt,
- virDomainDefFormatConvertXMLFlags(flags),
0);
cleanup:
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index aa1b2c77be..6bfb497648 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -887,6 +887,7 @@ virDomainSnapshotFindByName;
virDomainSnapshotForEach;
virDomainSnapshotForEachChild;
virDomainSnapshotForEachDescendant;
+virDomainSnapshotFormatConvertXMLFlags;
virDomainSnapshotIsExternal;
virDomainSnapshotLocationTypeFromString;
virDomainSnapshotLocationTypeToString;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 8682b27037..84b923fbbb 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8397,8 +8397,7 @@ qemuDomainSnapshotWriteMetadata(virDomainObjPtr vm,
virUUIDFormat(vm->def->uuid, uuidstr);
newxml = virDomainSnapshotDefFormat(
uuidstr, snapshot->def, caps, xmlopt,
- virDomainDefFormatConvertXMLFlags(QEMU_DOMAIN_FORMAT_LIVE_FLAGS),
- 1);
+ VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE | VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL);
if (newxml == NULL)
return -1;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 1f37107a20..b3f4dc6f5c 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -16287,8 +16287,7 @@ qemuDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
xml = virDomainSnapshotDefFormat(uuidstr, snap->def,
driver->caps, driver->xmlopt,
- virDomainDefFormatConvertXMLFlags(flags),
- 0);
+ virDomainSnapshotFormatConvertXMLFlags(flags));
cleanup:
virDomainObjEndAPI(&vm);
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index ce0df1f8e3..a6a67d42e2 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -6209,8 +6209,7 @@ testDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
xml = virDomainSnapshotDefFormat(uuidstr, snap->def, privconn->caps,
privconn->xmlopt,
- virDomainDefFormatConvertXMLFlags(flags),
- 0);
+ virDomainSnapshotFormatConvertXMLFlags(flags));
cleanup:
virDomainObjEndAPI(&vm);
diff --git a/src/vbox/vbox_common.c b/src/vbox/vbox_common.c
index d95fe7c7ae..1efd357b49 100644
--- a/src/vbox/vbox_common.c
+++ b/src/vbox/vbox_common.c
@@ -5373,7 +5373,7 @@ vboxSnapshotRedefine(virDomainPtr dom,
VIR_FREE(currentSnapshotXmlFilePath);
if (virAsprintf(¤tSnapshotXmlFilePath, "%s%s.xml", machineLocationPath, snapshotMachineDesc->currentSnapshot) < 0)
goto cleanup;
- char *snapshotContent = virDomainSnapshotDefFormat(NULL, def, data->caps, data->xmlopt, VIR_DOMAIN_DEF_FORMAT_SECURE, 0);
+ char *snapshotContent = virDomainSnapshotDefFormat(NULL, def, data->caps, data->xmlopt, VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE);
if (snapshotContent == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to get snapshot content"));
@@ -6321,8 +6321,7 @@ static char *vboxDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
virUUIDFormat(dom->uuid, uuidstr);
memcpy(def->dom->uuid, dom->uuid, VIR_UUID_BUFLEN);
ret = virDomainSnapshotDefFormat(uuidstr, def, data->caps, data->xmlopt,
- virDomainDefFormatConvertXMLFlags(flags),
- 0);
+ 0);
cleanup:
virDomainSnapshotDefFree(def);
diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index 2d2eaf88a6..066d617524 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -2291,8 +2291,7 @@ vzDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot, unsigned int flags)
xml = virDomainSnapshotDefFormat(uuidstr, snap->def, privconn->driver->caps,
privconn->driver->xmlopt,
- virDomainDefFormatConvertXMLFlags(flags),
- 0);
+ virDomainSnapshotFormatConvertXMLFlags(flags));
cleanup:
virDomainSnapshotObjListFree(snapshots);
diff --git a/tests/domainsnapshotxml2xmltest.c b/tests/domainsnapshotxml2xmltest.c
index 2a07fe0789..9eb71780fc 100644
--- a/tests/domainsnapshotxml2xmltest.c
+++ b/tests/domainsnapshotxml2xmltest.c
@@ -78,13 +78,16 @@ testCompareXMLToXMLFiles(const char *inxml,
char *actual = NULL;
int ret = -1;
virDomainSnapshotDefPtr def = NULL;
- unsigned int flags = VIR_DOMAIN_SNAPSHOT_PARSE_DISKS;
+ unsigned int parseflags = VIR_DOMAIN_SNAPSHOT_PARSE_DISKS;
+ unsigned int formatflags = VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE;
- if (internal)
- flags |= VIR_DOMAIN_SNAPSHOT_PARSE_INTERNAL;
+ if (internal) {
+ parseflags |= VIR_DOMAIN_SNAPSHOT_PARSE_INTERNAL;
+ formatflags |= VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL;
+ }
if (redefine)
- flags |= VIR_DOMAIN_SNAPSHOT_PARSE_REDEFINE;
+ parseflags |= VIR_DOMAIN_SNAPSHOT_PARSE_REDEFINE;
if (virTestLoadFile(inxml, &inXmlData) < 0)
goto cleanup;
@@ -94,13 +97,12 @@ testCompareXMLToXMLFiles(const char *inxml,
if (!(def = virDomainSnapshotDefParseString(inXmlData, driver.caps,
driver.xmlopt,
- flags)))
+ parseflags)))
goto cleanup;
if (!(actual = virDomainSnapshotDefFormat(uuid, def, driver.caps,
driver.xmlopt,
- VIR_DOMAIN_DEF_FORMAT_SECURE,
- internal)))
+ formatflags)))
goto cleanup;
if (!redefine) {
--
2.20.1
More information about the libvir-list
mailing list