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Merge branch 'c9' into a9

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eabdullin 2024-09-03 16:58:50 +03:00
commit 9e0bee5d6e
2 changed files with 100 additions and 2 deletions
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93
SOURCES/0009-repo-Don-t-try-to-perform-labeling-if-SELinux-is-dis.patch Normal file
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@ -0,0 +1,93 @@
From a0a32b4c2e2a03ff6ffcb6b7285905ec50892798 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 16f15195..10b88813 100644
--- a/libdnf/repo/Repo.cpp
+++ b/libdnf/repo/Repo.cpp
@@ -679,34 +679,36 @@ 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

9
SPECS/libdnf.spec
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@ -58,7 +58,7 @@
Name: libdnf
Version: %{libdnf_major_version}.%{libdnf_minor_version}.%{libdnf_micro_version}
Release: 8%{?dist}.alma.1
Release: 8%{?dist}.1.alma.1
Summary: Library providing simplified C and Python API to libsolv
License: LGPLv2+
URL: https://github.com/rpm-software-management/libdnf
@ -71,6 +71,7 @@ Patch5: 0005-filterAdvisory-installed_solvables-sort-RhBug2212838.patch
Patch6: 0006-hawkeysubject-get_best_selectors-only-obsol-oflatest.patch
Patch7: 0007-Avoid-reinstal-installonly-packages-marked-for-ERASE.patch
Patch8: 0008-PGP-Set-a-default-creation-SELinux-labels-on-GnuPG-d.patch
Patch9: 0009-repo-Don-t-try-to-perform-labeling-if-SELinux-is-dis.patch
# Almalinux patches
@ -323,9 +324,13 @@ popd
%endif
%changelog
* Thu Mar 28 2024 Eduard Abdullin <eabdullin@almalinux.org> - 0.69.0-8.alma.1
* Tue Sep 03 2024 Eduard Abdullin <eabdullin@almalinux.org> - 0.69.0-8.1.alma.1
- Added patch for almalinux bugtracker
* Fri Jun 21 2024 Petr Pisar <ppisar@redhat.com> - 0.69.0-8.1
- Do not set a default SELinux creation context if SELinux appears to be
disabled (RHEL-39796)
* Wed Oct 25 2023 Petr Pisar <ppisar@redhat.com> - 0.69.0-8
- Set default SELinux labels on GnuPG directories (RHEL-11238)