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From b8b376cf39d97c9f523a9867612126088b43c523 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Sat, 23 Oct 2021 19:50:52 +0100
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Subject: [PATCH] vddk: Only print vddk_library_version when we managed to load
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the library
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Because --dump-plugin calls load_library (false) it won't fail if we
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didn't manage to load the library. This results in library_version
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being 0, which we printed incorrectly.
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Resolve this problem by not printing the vddk_library_version entry in
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this case.
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Fixes: commit 8700649d147948897f3b97810a1dff37924bdd6e
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(cherry picked from commit a3fba12c3e9c2113009f556360ae0bd04c45f6bb)
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---
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plugins/vddk/nbdkit-vddk-plugin.pod | 1 +
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plugins/vddk/vddk.c | 9 ++++++++-
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2 files changed, 9 insertions(+), 1 deletion(-)
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diff --git a/plugins/vddk/nbdkit-vddk-plugin.pod b/plugins/vddk/nbdkit-vddk-plugin.pod
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index 822b96be..c56faddc 100644
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--- a/plugins/vddk/nbdkit-vddk-plugin.pod
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+++ b/plugins/vddk/nbdkit-vddk-plugin.pod
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@@ -420,6 +420,7 @@ by this build.
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=item C<vddk_library_version=...>
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The VDDK major library version: 5, 6, 7, ...
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+If this is omitted it means the library could not be loaded.
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=item C<vddk_dll=...>
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diff --git a/plugins/vddk/vddk.c b/plugins/vddk/vddk.c
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index 291283f4..96615749 100644
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--- a/plugins/vddk/vddk.c
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+++ b/plugins/vddk/vddk.c
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@@ -482,7 +482,14 @@ vddk_dump_plugin (void)
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printf ("vddk_default_libdir=%s\n", VDDK_LIBDIR);
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printf ("vddk_has_nfchostport=1\n");
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- printf ("vddk_library_version=%d\n", library_version);
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+
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+ /* Because load_library (false) we might not have loaded VDDK, in
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+ * which case we didn't set library_version. Note this cannot
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+ * happen in the normal (non-debug-plugin) path because there we use
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+ * load_library (true).
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+ */
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+ if (library_version > 0)
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+ printf ("vddk_library_version=%d\n", library_version);
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#if defined(HAVE_DLADDR)
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/* It would be nice to print the version of VDDK from the shared
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--
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2.31.1
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