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From a144c29831a39ed303d6ea8d2ae91e1c36d64c84 Mon Sep 17 00:00:00 2001
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Message-Id: <a144c29831a39ed303d6ea8d2ae91e1c36d64c84.1559799452.git.pmatilai@redhat.com>
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From: Panu Matilainen <pmatilai@redhat.com>
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Date: Wed, 15 May 2019 13:51:19 +0300
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Subject: [PATCH] Fix packages getting erased on failed update with dnf
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(RhBug:1620275)
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When adding update elements, we set the erase element to depend on the
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install element, but if an API user adds the same erasure manually
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after adding the update, we know its a duplicate erasure and filter
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it out, BUT we zero out the dependent element in the process. And
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if installing the update now fails, we end up removing the whole package
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due to that missing dependent element.
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This never happens with rpm itself so we can't easily test it, but is
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100% reproducable with dnf (at least dnf 3-4). Apparently it adds all
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erasures by itself (which is kind of understandable I guess, perhaps
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we should better allow this in the API)
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---
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lib/depends.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/lib/depends.c b/lib/depends.c
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index 6e9866eae..f8a6084ab 100644
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--- a/lib/depends.c
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+++ b/lib/depends.c
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@@ -121,7 +121,8 @@ static int removePackage(rpmts ts, Header h, rpmte depends)
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/* Filter out duplicate erasures. */
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if (packageHashGetEntry(tsmem->removedPackages, dboffset, &pp, NULL, NULL)) {
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- rpmteSetDependsOn(pp[0], depends);
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+ if (depends)
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+ rpmteSetDependsOn(pp[0], depends);
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return 0;
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}
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--
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2.21.0
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