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From 1e8e5094ee8112244c32704539202dd02866cfd6 Mon Sep 17 00:00:00 2001
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Message-Id: <1e8e5094ee8112244c32704539202dd02866cfd6@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Mon, 16 Mar 2020 22:12:33 +0100
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Subject: [PATCH] qemuDomainGetGuestInfo: don't assign NULL hostname
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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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Don't rely on error check and assign hostname only when non-NULL.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit 530ac288618b2f46e49f3ce86d4d89e7607ee3fe)
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https://bugzilla.redhat.com/show_bug.cgi?id=1812965
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Message-Id: <cb3528a36549edc5fdd23cb1e573e99fc43e9d15.1584391727.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 src/qemu/qemu_driver.c | 12 ++++++------
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 1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
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index 05e525e935..175a1961c2 100644
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--- a/src/qemu/qemu_driver.c
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+++ b/src/qemu/qemu_driver.c
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@@ -23254,14 +23254,14 @@ qemuDomainGetGuestInfo(virDomainPtr dom,
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     }
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     if (supportedTypes & VIR_DOMAIN_GUEST_INFO_HOSTNAME) {
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         rc = qemuAgentGetHostname(agent, &hostname);
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-        if (rc < 0 && !(rc == -2 && types == 0)) {
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+        if (rc < 0 && !(rc == -2 && types == 0))
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             goto exitagent;
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-        } else {
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-            if (virTypedParamsAddString(params, nparams, &maxparams, "hostname",
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-                                        hostname) < 0)
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-                goto exitagent;
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-        }
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     }
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+
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+    if (hostname &&
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+        virTypedParamsAddString(params, nparams, &maxparams, "hostname", hostname) < 0)
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+        goto exitagent;
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+
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     if (supportedTypes & VIR_DOMAIN_GUEST_INFO_FILESYSTEM) {
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         rc = qemuAgentGetFSInfo(agent, &agentfsinfo);
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         if (rc < 0) {
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-- 
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2.25.1
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