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virsh-snapshot: Refactor some details in virsh snapshot-create-as

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This patch simplifies the creation of XML, some error paths and adds
correct approach to check for virBuffer errors.
This commit is contained in:
Peter Krempa 2013-02-11 14:00:36 +01:00
parent 8cdd5faf46
commit 02b0d3f3ac
1 changed files with 8 additions and 11 deletions
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19
tools/virsh-snapshot.c
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@ -427,19 +427,16 @@ cmdSnapshotCreateAs(vshControl *ctl, const vshCmd *cmd)
if (vshCommandOptBool(cmd, "live"))
flags |= VIR_DOMAIN_SNAPSHOT_CREATE_LIVE;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0 ||
vshCommandOptStringReq(ctl, cmd, "description", &desc) < 0)
goto cleanup;
virBufferAddLit(&buf, "<domainsnapshot>\n");
if (name)
virBufferEscapeString(&buf, " <name>%s</name>\n", name);
if (desc)
virBufferEscapeString(&buf, " <description>%s</description>\n", desc);
virBufferEscapeString(&buf, " <name>%s</name>\n", name);
virBufferEscapeString(&buf, " <description>%s</description>\n", desc);
if (vshCommandOptStringReq(ctl, cmd, "memspec", &memspec) < 0)
goto cleanup;
@ -457,12 +454,13 @@ cmdSnapshotCreateAs(vshControl *ctl, const vshCmd *cmd)
}
virBufferAddLit(&buf, "</domainsnapshot>\n");
buffer = virBufferContentAndReset(&buf);
if (buffer == NULL) {
if (virBufferError(&buf)) {
vshError(ctl, "%s", _("Out of memory"));
goto cleanup;
}
buffer = virBufferContentAndReset(&buf);
if (vshCommandOptBool(cmd, "print-xml")) {
vshPrint(ctl, "%s\n", buffer);
ret = true;
@ -474,8 +472,7 @@ cmdSnapshotCreateAs(vshControl *ctl, const vshCmd *cmd)
cleanup:
virBufferFreeAndReset(&buf);
VIR_FREE(buffer);
if (dom)
virDomainFree(dom);
virDomainFree(dom);
return ret;
}