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From 71aa3b75eb2f6e01c0c8e0d1bc5c0d29e310d3fd Mon Sep 17 00:00:00 2001
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Message-Id: <71aa3b75eb2f6e01c0c8e0d1bc5c0d29e310d3fd@dist-git>
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From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
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Date: Fri, 9 Jun 2017 12:48:54 +0200
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Subject: [PATCH] Use a separate buffer for <filesystem><driver>
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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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Format the attributes in a separate buffer and only
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print the element if it's not empty.
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(cherry picked from commit 8d704e6cf7da60156a0b25b165d4780e99a0fa2f)
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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https://bugzilla.redhat.com/show_bug.cgi?id=1283251
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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 src/conf/domain_conf.c | 12 +++++++++---
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 1 file changed, 9 insertions(+), 3 deletions(-)
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diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
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index 242a79a7e7..e004559f9f 100644
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--- a/src/conf/domain_conf.c
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+++ b/src/conf/domain_conf.c
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@@ -21504,6 +21504,7 @@ virDomainFSDefFormat(virBufferPtr buf,
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     const char *fsdriver = virDomainFSDriverTypeToString(def->fsdriver);
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     const char *wrpolicy = virDomainFSWrpolicyTypeToString(def->wrpolicy);
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     const char *src = def->src->path;
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+    virBuffer driverBuf = VIR_BUFFER_INITIALIZER;
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     if (!type) {
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         virReportError(VIR_ERR_INTERNAL_ERROR,
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@@ -21523,16 +21524,21 @@ virDomainFSDefFormat(virBufferPtr buf,
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                       type, accessmode);
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     virBufferAdjustIndent(buf, 2);
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     if (def->fsdriver) {
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-        virBufferAsprintf(buf, "
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+        virBufferAsprintf(&driverBuf, " type='%s'", fsdriver);
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         if (def->format)
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-            virBufferAsprintf(buf, " format='%s'",
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+            virBufferAsprintf(&driverBuf, " format='%s'",
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                               virStorageFileFormatTypeToString(def->format));
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         /* Don't generate anything if wrpolicy is set to default */
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         if (def->wrpolicy)
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-            virBufferAsprintf(buf, " wrpolicy='%s'", wrpolicy);
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+            virBufferAsprintf(&driverBuf, " wrpolicy='%s'", wrpolicy);
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+    }
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+
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+    if (virBufferUse(&driverBuf)) {
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+        virBufferAddLit(buf, "
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+        virBufferAddBuffer(buf, &driverBuf);
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         virBufferAddLit(buf, "/>\n");
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     }
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-- 
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2.13.1
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