External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-07-30 13:37:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

snapshot: conf: Use common parsing and formatting functions for source

Browse Source 
Disk source elements for snapshots were using separate code from our
config parser. As snapshots can be stored on more than just regular
files, we will need the universal parser to allow us to expose a variety
of snapshot disk targets. This patch reuses the config parsers and
formatters to do the job.

This initial support only changes the code without any visible XML
change.
This commit is contained in:
Peter Krempa 2013-11-12 11:37:04 +01:00
parent 5f86d11e4a
commit 43f2ccdc73
2 changed files with 46 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
src/conf/snapshot_conf.c
View File

@ -128,27 +128,42 @@ virDomainSnapshotDiskDefParseXML(xmlNodePtr node,
}
}
cur = node->children;
while (cur) {
if (cur->type == XML_ELEMENT_NODE) {
if (!def->file &&
xmlStrEqual(cur->name, BAD_CAST "source")) {
def->file = virXMLPropString(cur, "file");
} else if (!def->format &&
xmlStrEqual(cur->name, BAD_CAST "driver")) {
char *driver = virXMLPropString(cur, "type");
def->format = virStorageFileFormatTypeFromString(driver);
if (def->format <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown disk snapshot driver '%s'"),
driver);
VIR_FREE(driver);
goto cleanup;
}
def->type = -1;
for (cur = node->children; cur; cur = cur->next) {
if (cur->type != XML_ELEMENT_NODE)
continue;
if (!def->file &&
xmlStrEqual(cur->name, BAD_CAST "source")) {
int backingtype = def->type;
if (backingtype < 0)
backingtype = VIR_DOMAIN_DISK_TYPE_FILE;
if (virDomainDiskSourceDefParse(cur,
backingtype,
&def->file,
NULL,
NULL,
NULL,
NULL) < 0)
goto cleanup;
} else if (!def->format &&
xmlStrEqual(cur->name, BAD_CAST "driver")) {
char *driver = virXMLPropString(cur, "type");
def->format = virStorageFileFormatTypeFromString(driver);
if (def->format <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown disk snapshot driver '%s'"),
driver);
VIR_FREE(driver);
goto cleanup;
}
VIR_FREE(driver);
}
cur = cur->next;
}
if (!def->snapshot && (def->file || def->format))
@ -577,6 +592,8 @@ static void
virDomainSnapshotDiskDefFormat(virBufferPtr buf,
virDomainSnapshotDiskDefPtr disk)
{
int type = disk->type;
if (!disk->name)
return;
@ -584,6 +601,10 @@ virDomainSnapshotDiskDefFormat(virBufferPtr buf,
if (disk->snapshot > 0)
virBufferAsprintf(buf, " snapshot='%s'",
virDomainSnapshotLocationTypeToString(disk->snapshot));
if (type < 0)
type = VIR_DOMAIN_DISK_TYPE_FILE;
if (!disk->file && disk->format == 0) {
virBufferAddLit(buf, "/>\n");
return;
@ -591,12 +612,14 @@ virDomainSnapshotDiskDefFormat(virBufferPtr buf,
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 6);
if (disk->format > 0)
virBufferEscapeString(buf, "<driver type='%s'/>\n",
virBufferEscapeString(buf, " <driver type='%s'/>\n",
virStorageFileFormatTypeToString(disk->format));
virBufferEscapeString(buf, "<source file='%s'/>\n", disk->file);
virBufferAdjustIndent(buf, -6);
virDomainDiskSourceDefFormatInternal(buf,
type,
disk->file,
0, 0, 0, NULL, 0, NULL, NULL, 0);
virBufferAddLit(buf, " </disk>\n");
}

1
src/conf/snapshot_conf.h
View File

@ -51,6 +51,7 @@ struct _virDomainSnapshotDiskDef {
char *name; /* name matching the <target dev='...' of the domain */
int index; /* index within snapshot->dom->disks that matches name */
int snapshot; /* enum virDomainSnapshotLocation */
int type; /* enum virDomainDiskType */
char *file; /* new source file when snapshot is external */
int format; /* enum virStorageFileFormat */
};