commit
6a931a3926
GPG Key ID:
D87CBBC16D2E4A72
@ -0,0 +1,37 @@
|
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From d138dbf60588b73a8ee9499540c82a8950ba9432 Mon Sep 17 00:00:00 2001
|
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From: Aleš Matěj <amatej@redhat.com>
|
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Date: Tue, 27 Jun 2023 07:24:28 +0200
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Subject: [PATCH] filterAdvisory: match installed_solvables sort with lower_bound (RhBug:2212838)
|
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|
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`std::lower_bound` expects that the range it operates on is sorted by
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the provided comparator.
|
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`lower_bound()` is used on `installed_solvables` twice, first with
|
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comparator `NameSolvableComparator` and later with
|
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`SolvableCompareAdvisoryPkgNameArch` to cover both we need to sort
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`installed_solvables` by name and arch.
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Otherwise this can lead to problems if multiple architectures of a pkg
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are installed.
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For: https://bugzilla.redhat.com/show_bug.cgi?id=2212838
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---
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libdnf/sack/query.cpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/libdnf/sack/query.cpp b/libdnf/sack/query.cpp
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index b7b1560..7937770 100644
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--- a/libdnf/sack/query.cpp
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+++ b/libdnf/sack/query.cpp
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@@ -1903,7 +1903,7 @@ Query::Impl::filterAdvisory(const Filter & f, Map *m, int keyname)
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while ((installed_id = installed.pImpl->result->next(installed_id)) != -1) {
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installed_solvables.push_back(pool_id2solvable(pool, installed_id));
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}
|
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- std::sort(installed_solvables.begin(), installed_solvables.end(), NameSolvableComparator);
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+ std::sort(installed_solvables.begin(), installed_solvables.end(), NameArchSolvableComparator);
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Query obsoletes(sack, ExcludeFlags::IGNORE_EXCLUDES);
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obsoletes.addFilter(HY_PKG, HY_EQ, resultPset);
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--
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libgit2 1.6.4
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@ -0,0 +1,99 @@
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From c32ce1071807176eb31d884d4185b20d944a28b9 Mon Sep 17 00:00:00 2001
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From: Aleš Matěj <amatej@redhat.com>
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Date: Mon, 25 Sep 2023 08:24:40 +0200
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Subject: [PATCH] Avoid reinstalling installonly packages marked for ERASE
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Without this patch reinstalling installonly pkg marked for ERASE might
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be a valid smallest solution to our job.
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For example when user wants to install through a provide we select all
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packages that provide it and put them inside a `job install oneof ...`
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if one of the providers is also marked for ERASE due to installonly
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limit libsolv might decide to reinstall it.
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To make sure it doesn't happen mark the available package also as ERASE.
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https://github.com/openSUSE/libsolv/issues/540
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https://issues.redhat.com/browse/RHEL-1253
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(https://bugzilla.redhat.com/show_bug.cgi?id=2163474)
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---
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libdnf/goal/Goal.cpp | 35 +++++++++++++++++++++++++++++++++--
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1 file changed, 33 insertions(+), 2 deletions(-)
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diff --git a/libdnf/goal/Goal.cpp b/libdnf/goal/Goal.cpp
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index b771030..6939d8a 100644
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--- a/libdnf/goal/Goal.cpp
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+++ b/libdnf/goal/Goal.cpp
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@@ -639,6 +639,12 @@ erase_flags2libsolv(int flags)
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return ret;
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}
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+static bool
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+NameSolvableComparator(const Solvable * first, const Solvable * second)
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+{
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+ return first->name < second->name;
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+}
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+
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Goal::Goal(const Goal & goal_src) : pImpl(new Impl(*goal_src.pImpl)) {}
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Goal::Impl::Impl(const Goal::Impl & goal_src)
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@@ -1324,10 +1330,24 @@ Goal::Impl::limitInstallonlyPackages(Solver *solv, Queue *job)
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for (int i = 0; i < onlies->count; ++i) {
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Id p, pp;
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IdQueue q, installing;
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+ std::vector<Solvable *> available_unused_providers;
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+ // Add all providers of installonly provides that are marked for install
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+ // to `q` IdQueue those that are not marked for install and are not already
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+ // installed are added to available_unused_providers.
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FOR_PKG_PROVIDES(p, pp, onlies->elements[i])
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- if (solver_get_decisionlevel(solv, p) > 0)
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+ // According to libsolv-bindings the decision level is positive for installs
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+ // and negative for conflicts (conflicts with another package or dependency
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+ // conflicts = dependencies cannot be met).
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+ if (solver_get_decisionlevel(solv, p) > 0) {
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q.pushBack(p);
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+ } else {
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+ Solvable *s = pool_id2solvable(pool, p);
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+ if (s->repo != pool->installed) {
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+ available_unused_providers.push_back(s);
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+ }
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+ }
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+
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if (q.size() <= (int) dnf_sack_get_installonly_limit(sack)) {
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continue;
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}
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@@ -1345,17 +1365,28 @@ Goal::Impl::limitInstallonlyPackages(Solver *solv, Queue *job)
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|
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struct InstallonliesSortCallback s_cb = {pool, dnf_sack_running_kernel(sack)};
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solv_sort(q.data(), q.size(), sizeof(q[0]), sort_packages, &s_cb);
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+ std::sort(available_unused_providers.begin(), available_unused_providers.end(), NameSolvableComparator);
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IdQueue same_names;
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while (q.size() > 0) {
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same_name_subqueue(pool, q.getQueue(), same_names.getQueue());
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if (same_names.size() <= (int) dnf_sack_get_installonly_limit(sack))
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continue;
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reresolve = 1;
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for (int j = 0; j < same_names.size(); ++j) {
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Id id = same_names[j];
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Id action = SOLVER_ERASE;
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- if (j < (int) dnf_sack_get_installonly_limit(sack))
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+ if (j < (int) dnf_sack_get_installonly_limit(sack)) {
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action = SOLVER_INSTALL;
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+ } else {
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+ // We want to avoid reinstalling packages marked for ERASE, therefore
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+ // if some unused provider is also available we need to mark it ERASE as well.
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+ Solvable *s = pool_id2solvable(pool, id);
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+ auto low = std::lower_bound(available_unused_providers.begin(), available_unused_providers.end(), s, NameSolvableComparator);
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+ while (low != available_unused_providers.end() && (*low)->name == s->name) {
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+ queue_push2(job, SOLVER_ERASE | SOLVER_SOLVABLE, pool_solvable2id(pool, *low));
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+ ++low;
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+ }
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+ }
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queue_push2(job, action | SOLVER_SOLVABLE, id);
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}
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}
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--
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libgit2 1.6.4
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@ -0,0 +1,335 @@
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From 8752006f5f9c11bca3f04c99b463fd167caf0ddd Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
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Date: Wed, 4 Oct 2023 16:38:12 +0200
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Subject: [PATCH] PGP: Set a default creation SELinux labels on GnuPG
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directories
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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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libdnf used to precreate the directory in /run/user to make sure
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a GnuPG agent executed by GPGME library places its socket there.
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The directories there are normally created and removed by systemd
|
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(logind PAM session). libdnf created them for a case when a package
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manager is invoked out of systemd session, before the super user logs
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in. E.g. by a timer job to cache repository metadata.
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|
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A problem was when this out-of-session process was a SELinux-confined
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process creating files with its own SELinux label different from a DNF
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program. Then the directory was created with a SELinux label different
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from the one expected by systemd and when logging out a corresponding
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user, the mismatching label clashed with systemd.
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The same issue was with temporary GnuPG home directories created by
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libdnf under /tmp.
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This patch fixes both the isseus by restoring a SELinux label of those
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directories to the label defined in a default SELinux file context
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database.
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Obviously the database cannot have a record for a nonspecific
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/tmp/tmpdir.XXXXXX (a mkdtemp() template) directory names. Therefore
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I changed their names to more specific /tmp/libdnf.XXXXXX. Once
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a SELinux policy updates the database, directories under /tmp will get
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a correct label.
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There is yet another problem with accessing /var/cache/dnf/*/pubring,
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but that seems to be pure SELinux policy problem.
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This patch adds a new -DENABLE_SELINUX=OFF CMake option to disable the
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new dependency on libselinux. A default behavior is to support SELinux.
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Implementation details:
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I used selabel_lookup() + setfscreatecon() + mkdtemp()
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+ setfscreatecon() sequence instead of mkdtemp()
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+ selinux_restorecon() sequence because the later polutes stderr if
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a SELinux policy does not define the default context. One could
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supress stderr messages with selinux_set_callback(), but its effect
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cannot be restored.
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I also kept the sequence in one function and reused it for creating
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/run/user/$PID directories because the code is simpler than spliting
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the function into three parts.
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https://issues.redhat.com/browse/RHEL-6421
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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CMakeLists.txt | 7 +++
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libdnf.spec | 11 +++-
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libdnf/CMakeLists.txt | 4 ++
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libdnf/repo/Repo.cpp | 121 +++++++++++++++++++++++++++++++++++++-----
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4 files changed, 129 insertions(+), 14 deletions(-)
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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index d895b2bf..e5829e6a 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -34,6 +34,7 @@ option(WITH_MAN "Enables hawkey man page generation" ON)
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option(WITH_ZCHUNK "Build with zchunk support" ON)
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option(ENABLE_RHSM_SUPPORT "Build with Red Hat Subscription Manager support?" OFF)
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option(ENABLE_SOLV_URPMREORDER "Build with support for URPM-like solution reordering?" OFF)
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+option(ENABLE_SELINUX "Restore SELinux labels on GnuPG directories" ON)
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# build options - debugging
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@@ -83,6 +84,12 @@ if(ENABLE_RHSM_SUPPORT)
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include_directories(${RHSM_INCLUDE_DIRS})
|
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endif()
|
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|
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+if(ENABLE_SELINUX)
|
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+ pkg_check_modules(SELINUX REQUIRED libselinux)
|
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+ include_directories(${SELINUX_INCLUDE_DIRS})
|
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+ add_definitions(-DENABLE_SELINUX=1)
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+endif()
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+
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# glibc: check if fnmatch.h has FNM_CASEFOLD symbol
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include(CheckSymbolExists)
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diff --git a/libdnf.spec b/libdnf.spec
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index aa51dd28..df482f54 100644
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--- a/libdnf.spec
|
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+++ b/libdnf.spec
|
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@@ -42,6 +42,8 @@
|
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%bcond_with rhsm
|
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%endif
|
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|
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+%bcond_without selinux
|
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+
|
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%if 0%{?rhel}
|
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%bcond_with zchunk
|
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%else
|
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@@ -84,6 +86,9 @@ BuildRequires: pkgconfig(sqlite3)
|
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BuildRequires: pkgconfig(json-c)
|
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BuildRequires: pkgconfig(cppunit)
|
||||
BuildRequires: pkgconfig(libcrypto)
|
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+%if %{with selinux}
|
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+BuildRequires: pkgconfig(libselinux)
|
||||
+%endif
|
||||
BuildRequires: pkgconfig(modulemd-2.0) >= %{libmodulemd_version}
|
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BuildRequires: pkgconfig(smartcols)
|
||||
BuildRequires: gettext
|
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@@ -205,7 +210,8 @@ pushd build-py2
|
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%define __builddir build-py2
|
||||
%endif
|
||||
%cmake -DPYTHON_DESIRED:FILEPATH=%{__python2} -DWITH_MAN=OFF ../ %{!?with_zchunk:-DWITH_ZCHUNK=OFF} %{!?with_valgrind:-DDISABLE_VALGRIND=1} %{_cmake_opts} -DLIBDNF_MAJOR_VERSION=%{libdnf_major_version} -DLIBDNF_MINOR_VERSION=%{libdnf_minor_version} -DLIBDNF_MICRO_VERSION=%{libdnf_micro_version} \
|
||||
- -DWITH_SANITIZERS=%{?with_sanitizers:ON}%{!?with_sanitizers:OFF}
|
||||
+ -DWITH_SANITIZERS=%{?with_sanitizers:ON}%{!?with_sanitizers:OFF} \
|
||||
+ -DENABLE_SELINUX=%{?with_selinux:ON}%{!?with_selinux:OFF}
|
||||
%make_build
|
||||
popd
|
||||
%endif
|
||||
@@ -219,7 +225,8 @@ pushd build-py3
|
||||
%define __builddir build-py3
|
||||
%endif
|
||||
%cmake -DPYTHON_DESIRED:FILEPATH=%{__python3} -DWITH_GIR=0 -DWITH_MAN=0 -Dgtkdoc=0 ../ %{!?with_zchunk:-DWITH_ZCHUNK=OFF} %{!?with_valgrind:-DDISABLE_VALGRIND=1} %{_cmake_opts} -DLIBDNF_MAJOR_VERSION=%{libdnf_major_version} -DLIBDNF_MINOR_VERSION=%{libdnf_minor_version} -DLIBDNF_MICRO_VERSION=%{libdnf_micro_version} \
|
||||
- -DWITH_SANITIZERS=%{?with_sanitizers:ON}%{!?with_sanitizers:OFF}
|
||||
+ -DWITH_SANITIZERS=%{?with_sanitizers:ON}%{!?with_sanitizers:OFF} \
|
||||
+ -DENABLE_SELINUX=%{?with_selinux:ON}%{!?with_selinux:OFF}
|
||||
%make_build
|
||||
popd
|
||||
%endif
|
||||
diff --git a/libdnf/CMakeLists.txt b/libdnf/CMakeLists.txt
|
||||
index 998a6f94..10b15230 100644
|
||||
--- a/libdnf/CMakeLists.txt
|
||||
+++ b/libdnf/CMakeLists.txt
|
||||
@@ -89,6 +89,10 @@ if(ENABLE_RHSM_SUPPORT)
|
||||
target_link_libraries(libdnf ${RHSM_LIBRARIES})
|
||||
endif()
|
||||
|
||||
+if(ENABLE_SELINUX)
|
||||
+ target_link_libraries(libdnf ${SELINUX_LIBRARIES})
|
||||
+endif()
|
||||
+
|
||||
set(DNF_SO_VERSION 2)
|
||||
set_target_properties(libdnf PROPERTIES OUTPUT_NAME "dnf")
|
||||
set_target_properties(libdnf PROPERTIES SOVERSION ${DNF_SO_VERSION})
|
||||
diff --git a/libdnf/repo/Repo.cpp b/libdnf/repo/Repo.cpp
|
||||
index d61a24a5..68b82ccc 100644
|
||||
--- a/libdnf/repo/Repo.cpp
|
||||
+++ b/libdnf/repo/Repo.cpp
|
||||
@@ -51,6 +51,11 @@
|
||||
|
||||
#include <gpgme.h>
|
||||
|
||||
+#if ENABLE_SELINUX
|
||||
+#include <selinux/selinux.h>
|
||||
+#include <selinux/label.h>
|
||||
+#endif
|
||||
+
|
||||
#include <solv/chksum.h>
|
||||
#include <solv/repo.h>
|
||||
#include <solv/util.h>
|
||||
@@ -649,6 +654,78 @@ std::unique_ptr<LrHandle> Repo::Impl::lrHandleInitRemote(const char *destdir)
|
||||
return h;
|
||||
}
|
||||
|
||||
+/*
|
||||
+ * @brief Create a temporary directory.
|
||||
+ *
|
||||
+ * Creates a temporary directory with 0700 mode attempting to set a proper
|
||||
+ * SELinux file context. Encountered errors are logged at debug level to
|
||||
+ * a global logger.
|
||||
+ *
|
||||
+ * @param name_template As an input value it is a template according to
|
||||
+ * mkdtemp(3). As an output value it will contain the created directory name.
|
||||
+ *
|
||||
+ * @return 0 if the directory was created, -1 if it wasn't. SELinux failures
|
||||
+ * are not considered an error.
|
||||
+ */
|
||||
+static int create_temporary_directory(char *name_template) {
|
||||
+ auto logger(Log::getLogger());
|
||||
+ int retval = 0;
|
||||
+#if ENABLE_SELINUX
|
||||
+ char *old_default_context = NULL;
|
||||
+ char *new_default_context = NULL;
|
||||
+ int old_default_context_was_retrieved= 0;
|
||||
+ struct selabel_handle *labeling_handle = NULL;
|
||||
+
|
||||
+ /* A purpose of this piece of code is to deal with applications whose
|
||||
+ * security policy overrides a file context for temporary files but don't
|
||||
+ * know that libdnf executes GnuPG which expects a default file context. */
|
||||
+ if (0 == getfscreatecon(&old_default_context)) {
|
||||
+ old_default_context_was_retrieved = 1;
|
||||
+ } else {
|
||||
+ logger->debug(tfm::format("Failed to retrieve a default SELinux context"));
|
||||
+ }
|
||||
+
|
||||
+ labeling_handle = selabel_open(SELABEL_CTX_FILE, NULL, 0);
|
||||
+ if (NULL == labeling_handle) {
|
||||
+ logger->debug(tfm::format("Failed to open a SELinux labeling handle: %s",
|
||||
+ strerror(errno)));
|
||||
+ } else {
|
||||
+ if (selabel_lookup(labeling_handle, &new_default_context, name_template, 0700)) {
|
||||
+ /* Here we could hard-code "system_u:object_r:user_tmp_t:s0", but
|
||||
+ * that value should be really defined in default file context
|
||||
+ * SELinux policy. Only log that the policy is incpomplete. */
|
||||
+ logger->debug(tfm::format("Failed to look up a default SELinux label for \"%s\"",
|
||||
+ name_template));
|
||||
+ } else {
|
||||
+ if (setfscreatecon(new_default_context)) {
|
||||
+ logger->debug(tfm::format("Failed to set default SELinux context to \"%s\"",
|
||||
+ new_default_context));
|
||||
+ }
|
||||
+ freecon(new_default_context);
|
||||
+ }
|
||||
+ selabel_close(labeling_handle);
|
||||
+ }
|
||||
+#endif
|
||||
+
|
||||
+ /* mkdtemp() assures 0700 mode. */
|
||||
+ if (NULL == mkdtemp(name_template)) {
|
||||
+ logger->debug(tfm::format("Failed to create a directory \"%s\": %s",
|
||||
+ name_template, strerror(errno)));
|
||||
+ retval = -1;
|
||||
+ }
|
||||
+
|
||||
+#if ENABLE_SELINUX
|
||||
+ if (old_default_context_was_retrieved) {
|
||||
+ if (setfscreatecon(old_default_context)) {
|
||||
+ logger->debug(tfm::format("Failed to restore a default SELinux context"));
|
||||
+ }
|
||||
+ }
|
||||
+ freecon(old_default_context);
|
||||
+#endif
|
||||
+
|
||||
+ return retval;
|
||||
+}
|
||||
+
|
||||
static void gpgImportKey(gpgme_ctx_t context, int keyFd)
|
||||
{
|
||||
auto logger(Log::getLogger());
|
||||
@@ -703,8 +780,8 @@ static std::vector<Key> rawkey2infos(int fd) {
|
||||
std::unique_ptr<std::remove_pointer<gpgme_ctx_t>::type> context(ctx);
|
||||
|
||||
// set GPG home dir
|
||||
- char tmpdir[] = "/tmp/tmpdir.XXXXXX";
|
||||
- mkdtemp(tmpdir);
|
||||
+ char tmpdir[] = "/tmp/libdnf.XXXXXX";
|
||||
+ create_temporary_directory(tmpdir);
|
||||
Finalizer tmpDirRemover([&tmpdir](){
|
||||
dnf_remove_recursive(tmpdir, NULL);
|
||||
});
|
||||
@@ -853,6 +930,13 @@ std::vector<Key> Repo::Impl::retrieve(const std::string & url)
|
||||
* would cause a race condition with calling gpgme_release(), see [2], [3],
|
||||
* [4].
|
||||
*
|
||||
+ * Current solution precreating /run/user/$UID showed problematic when this
|
||||
+ * library was used out of a systemd-logind session from a programm with an
|
||||
+ * unexpected SELinux context. Then /run/user/$UID, normally maintained by
|
||||
+ * systemd, was assigned a SELinux label unexpected by systemd causing errors
|
||||
+ * on a user logout [5]. We remedy it by restoring the label according to
|
||||
+ * a file context policy.
|
||||
+ *
|
||||
* Since the agent doesn't clean up its sockets properly, by creating this
|
||||
* directory we make sure they are in a place that is not causing trouble with
|
||||
* container images.
|
||||
@@ -861,14 +945,27 @@ std::vector<Key> Repo::Impl::retrieve(const std::string & url)
|
||||
* [2] https://bugzilla.redhat.com/show_bug.cgi?id=1769831
|
||||
* [3] https://github.com/rpm-software-management/microdnf/issues/50
|
||||
* [4] https://bugzilla.redhat.com/show_bug.cgi?id=1781601
|
||||
+ * [5] https://issues.redhat.com/browse/RHEL-6421
|
||||
*/
|
||||
static void ensure_socket_dir_exists() {
|
||||
auto logger(Log::getLogger());
|
||||
+ char tmpdir[] = "/run/user/libdnf.XXXXXX";
|
||||
std::string dirname = "/run/user/" + std::to_string(getuid());
|
||||
- int res = mkdir(dirname.c_str(), 0700);
|
||||
- if (res != 0 && errno != EEXIST) {
|
||||
- logger->debug(tfm::format("Failed to create directory \"%s\": %d - %s",
|
||||
- dirname, errno, strerror(errno)));
|
||||
+
|
||||
+ /* create_temporary_directory() assures 0700 mode and tries its best to
|
||||
+ * correct a SELinux label. */
|
||||
+ if (create_temporary_directory(tmpdir)) {
|
||||
+ return;
|
||||
+ }
|
||||
+
|
||||
+ /* Set the desired name. */
|
||||
+ if (rename(tmpdir, dirname.c_str())) {
|
||||
+ if (errno != EEXIST && errno != ENOTEMPTY && errno != EBUSY) {
|
||||
+ logger->debug(tfm::format("Failed to rename \"%s\" directory to \"%s\": %s",
|
||||
+ tmpdir, dirname, strerror(errno)));
|
||||
+ }
|
||||
+ rmdir(tmpdir);
|
||||
+ return;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1151,8 +1248,8 @@ void Repo::Impl::addCountmeFlag(LrHandle *handle) {
|
||||
bool Repo::Impl::isMetalinkInSync()
|
||||
{
|
||||
auto logger(Log::getLogger());
|
||||
- char tmpdir[] = "/tmp/tmpdir.XXXXXX";
|
||||
- mkdtemp(tmpdir);
|
||||
+ char tmpdir[] = "/tmp/libdnf.XXXXXX";
|
||||
+ create_temporary_directory(tmpdir);
|
||||
Finalizer tmpDirRemover([&tmpdir](){
|
||||
dnf_remove_recursive(tmpdir, NULL);
|
||||
});
|
||||
@@ -1221,8 +1318,8 @@ bool Repo::Impl::isRepomdInSync()
|
||||
{
|
||||
auto logger(Log::getLogger());
|
||||
LrYumRepo *yum_repo;
|
||||
- char tmpdir[] = "/tmp/tmpdir.XXXXXX";
|
||||
- mkdtemp(tmpdir);
|
||||
+ char tmpdir[] = "/tmp/libdnf.XXXXXX";
|
||||
+ create_temporary_directory(tmpdir);
|
||||
Finalizer tmpDirRemover([&tmpdir](){
|
||||
dnf_remove_recursive(tmpdir, NULL);
|
||||
});
|
||||
@@ -1260,8 +1357,8 @@ void Repo::Impl::fetch(const std::string & destdir, std::unique_ptr<LrHandle> &&
|
||||
throw RepoError(tfm::format(_("Cannot create repo destination directory \"%s\": %s"),
|
||||
destdir, errTxt));
|
||||
}
|
||||
- auto tmpdir = destdir + "/tmpdir.XXXXXX";
|
||||
- if (!mkdtemp(&tmpdir.front())) {
|
||||
+ auto tmpdir = destdir + "/libdnf.XXXXXX";
|
||||
+ if (create_temporary_directory(&tmpdir.front())) {
|
||||
const char * errTxt = strerror(errno);
|
||||
throw RepoError(tfm::format(_("Cannot create repo temporary directory \"%s\": %s"),
|
||||
tmpdir.c_str(), errTxt));
|
||||
--
|
||||
2.41.0
|
||||
|
||||
@ -0,0 +1,93 @@
|
||||
From 8eac75556d0f53f3ba6cd12d2545bc8dbebb11f4 Mon Sep 17 00:00:00 2001
|
||||
From: Colin Walters <walters@verbum.org>
|
||||
Date: Tue, 4 Jun 2024 06:57:19 -0400
|
||||
Subject: [PATCH] repo: Don't try to perform labeling if SELinux is disabled
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
The default for container execution is that `/sys/fs/selinux`
|
||||
is not mounted, and the libselinux library function `is_selinux_enabled`
|
||||
should be used to dynamically check if the system should attempt to perform SELinux labeling.
|
||||
|
||||
This is how it's done by rpm, ostree, and systemd for example.
|
||||
|
||||
But this code unconditionally tries to label if it finds a policy,
|
||||
which breaks in an obscure corner case
|
||||
when executed inside a container that includes policy files (e.g.
|
||||
fedora/rhel-bootc) but when we're not using overlayfs for the backend
|
||||
(with BUILDAH_BACKEND=vfs).
|
||||
|
||||
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
||||
---
|
||||
libdnf/repo/Repo.cpp | 50 +++++++++++++++++++++++---------------------
|
||||
1 file changed, 26 insertions(+), 24 deletions(-)
|
||||
|
||||
diff --git a/libdnf/repo/Repo.cpp b/libdnf/repo/Repo.cpp
|
||||
index 68b82ccc..4f646f8c 100644
|
||||
--- a/libdnf/repo/Repo.cpp
|
||||
+++ b/libdnf/repo/Repo.cpp
|
||||
@@ -676,34 +676,36 @@ static int create_temporary_directory(char *name_template) {
|
||||
int old_default_context_was_retrieved= 0;
|
||||
struct selabel_handle *labeling_handle = NULL;
|
||||
|
||||
- /* A purpose of this piece of code is to deal with applications whose
|
||||
- * security policy overrides a file context for temporary files but don't
|
||||
- * know that libdnf executes GnuPG which expects a default file context. */
|
||||
- if (0 == getfscreatecon(&old_default_context)) {
|
||||
- old_default_context_was_retrieved = 1;
|
||||
- } else {
|
||||
- logger->debug(tfm::format("Failed to retrieve a default SELinux context"));
|
||||
- }
|
||||
+ if (is_selinux_enabled()) {
|
||||
+ /* A purpose of this piece of code is to deal with applications whose
|
||||
+ * security policy overrides a file context for temporary files but don't
|
||||
+ * know that libdnf executes GnuPG which expects a default file context. */
|
||||
+ if (0 == getfscreatecon(&old_default_context)) {
|
||||
+ old_default_context_was_retrieved = 1;
|
||||
+ } else {
|
||||
+ logger->debug(tfm::format("Failed to retrieve a default SELinux context"));
|
||||
+ }
|
||||
|
||||
- labeling_handle = selabel_open(SELABEL_CTX_FILE, NULL, 0);
|
||||
- if (NULL == labeling_handle) {
|
||||
- logger->debug(tfm::format("Failed to open a SELinux labeling handle: %s",
|
||||
- strerror(errno)));
|
||||
- } else {
|
||||
- if (selabel_lookup(labeling_handle, &new_default_context, name_template, 0700)) {
|
||||
- /* Here we could hard-code "system_u:object_r:user_tmp_t:s0", but
|
||||
- * that value should be really defined in default file context
|
||||
- * SELinux policy. Only log that the policy is incpomplete. */
|
||||
- logger->debug(tfm::format("Failed to look up a default SELinux label for \"%s\"",
|
||||
- name_template));
|
||||
+ labeling_handle = selabel_open(SELABEL_CTX_FILE, NULL, 0);
|
||||
+ if (NULL == labeling_handle) {
|
||||
+ logger->debug(tfm::format("Failed to open a SELinux labeling handle: %s",
|
||||
+ strerror(errno)));
|
||||
} else {
|
||||
- if (setfscreatecon(new_default_context)) {
|
||||
- logger->debug(tfm::format("Failed to set default SELinux context to \"%s\"",
|
||||
- new_default_context));
|
||||
+ if (selabel_lookup(labeling_handle, &new_default_context, name_template, 0700)) {
|
||||
+ /* Here we could hard-code "system_u:object_r:user_tmp_t:s0", but
|
||||
+ * that value should be really defined in default file context
|
||||
+ * SELinux policy. Only log that the policy is incpomplete. */
|
||||
+ logger->debug(tfm::format("Failed to look up a default SELinux label for \"%s\"",
|
||||
+ name_template));
|
||||
+ } else {
|
||||
+ if (setfscreatecon(new_default_context)) {
|
||||
+ logger->debug(tfm::format("Failed to set default SELinux context to \"%s\"",
|
||||
+ new_default_context));
|
||||
+ }
|
||||
+ freecon(new_default_context);
|
||||
}
|
||||
- freecon(new_default_context);
|
||||
+ selabel_close(labeling_handle);
|
||||
}
|
||||
- selabel_close(labeling_handle);
|
||||
}
|
||||
#endif
|
||||
|
||||
--
|
||||
2.45.2
|
||||
|
||||
Loading…
Reference in new issue