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From 45fb61b56bbd74f365b71e9e35bf953dc045833e Mon Sep 17 00:00:00 2001
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Message-Id: <45fb61b56bbd74f365b71e9e35bf953dc045833e@dist-git>
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From: Jiri Denemark <jdenemar@redhat.com>
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Date: Thu, 22 Nov 2018 16:28:56 +0100
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Subject: [PATCH] virsh: Strip XML declaration when extracting CPU XMLs
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Since commit v4.3.0-336-gc84726fbdd all
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{hypervisor-,}cpu-{baseline,compare} commands use a generic
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vshExtractCPUDefXMLs helper for extracting individual CPU definitions
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from the provided input file. The helper wraps the input file in a
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<container> element so that several independent elements can be easily
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parsed from the file. This works fine except when the file starts with
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XML declaration () because the XML declaration
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cannot be put inside any element. In fact it has to be at the very
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beginning of the XML document without any preceding white space
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characters. We can just simply skip the XML declaration.
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https://bugzilla.redhat.com/show_bug.cgi?id=1592737
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit fcd1c865e168bdb9763b19e790c15e80aa29be66)
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https://bugzilla.redhat.com/show_bug.cgi?id=1659048
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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tools/virsh-host.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/tools/virsh-host.c b/tools/virsh-host.c
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index 16f504bafe..b7f86bdd91 100644
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--- a/tools/virsh-host.c
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+++ b/tools/virsh-host.c
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@@ -1130,13 +1130,20 @@ vshExtractCPUDefXMLs(vshControl *ctl,
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xmlDocPtr xml = NULL;
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xmlXPathContextPtr ctxt = NULL;
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xmlNodePtr *nodes = NULL;
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+ char *doc;
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size_t i;
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int n;
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if (virFileReadAll(xmlFile, VSH_MAX_XML_FILE, &buffer) < 0)
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goto error;
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- if (virAsprintf(&xmlStr, "<container>%s</container>", buffer) < 0)
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+ /* Strip possible XML declaration */
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+ if (STRPREFIX(buffer, "")))
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+ doc += 2;
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+ else
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+ doc = buffer;
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+
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+ if (virAsprintf(&xmlStr, "<container>%s</container>", doc) < 0)
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goto error;
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if (!(xml = virXMLParseStringCtxt(xmlStr, xmlFile, &ctxt)))
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--
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2.20.1
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