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From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Cc: "'Richard W . M . Jones'" <rjones@redhat.com>
Subject: [PATCH v2 1/7] fedora: Install pasta as hard link to ensure SELinux file context match
Date: Wed, 16 Aug 2023 20:17:24 +0200	[thread overview]
Message-ID: <20230816181730.2165306-2-sbrivio@redhat.com> (raw)
In-Reply-To: <20230816181730.2165306-1-sbrivio@redhat.com>

The Makefile installs symbolic links by default, which actually
worked at some point (not by design) with SELinux, but at least on
recent kernel versions it doesn't anymore: override pasta (and
pasta.avx2) with hard links.

Otherwise, even if the links are labeled as pasta_exec_t, SELinux
will "resolve" them to passt_exec_t, and we'll have pasta running as
passt_t instead of pasta_t.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 contrib/fedora/passt.spec | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/contrib/fedora/passt.spec b/contrib/fedora/passt.spec
index 8d28ef6..d0c6895 100644
--- a/contrib/fedora/passt.spec
+++ b/contrib/fedora/passt.spec
@@ -54,10 +54,17 @@ This package adds SELinux enforcement to passt(1) and pasta(1).
 %make_build VERSION="%{version}-%{release}.%{_arch}"
 
 %install
+
 %make_install DESTDIR=%{buildroot} prefix=%{_prefix} bindir=%{_bindir} mandir=%{_mandir} docdir=%{_docdir}/%{name}
+# The Makefile creates symbolic links for pasta, but we need hard links for
+# SELinux file contexts to work as intended. Same with pasta.avx2 if present.
+ln -f %{buildroot}%{_bindir}/passt %{buildroot}%{_bindir}/pasta
 %ifarch x86_64
+ln -f %{buildroot}%{_bindir}/passt.avx2 %{buildroot}%{_bindir}/pasta.avx2
+
 ln -sr %{buildroot}%{_mandir}/man1/passt.1 %{buildroot}%{_mandir}/man1/passt.avx2.1
 ln -sr %{buildroot}%{_mandir}/man1/pasta.1 %{buildroot}%{_mandir}/man1/pasta.avx2.1
+install -p -m 755 %{buildroot}%{_bindir}/passt.avx2 %{buildroot}%{_bindir}/pasta.avx2
 %endif
 
 pushd contrib/selinux
-- 
@@ -54,10 +54,17 @@ This package adds SELinux enforcement to passt(1) and pasta(1).
 %make_build VERSION="%{version}-%{release}.%{_arch}"
 
 %install
+
 %make_install DESTDIR=%{buildroot} prefix=%{_prefix} bindir=%{_bindir} mandir=%{_mandir} docdir=%{_docdir}/%{name}
+# The Makefile creates symbolic links for pasta, but we need hard links for
+# SELinux file contexts to work as intended. Same with pasta.avx2 if present.
+ln -f %{buildroot}%{_bindir}/passt %{buildroot}%{_bindir}/pasta
 %ifarch x86_64
+ln -f %{buildroot}%{_bindir}/passt.avx2 %{buildroot}%{_bindir}/pasta.avx2
+
 ln -sr %{buildroot}%{_mandir}/man1/passt.1 %{buildroot}%{_mandir}/man1/passt.avx2.1
 ln -sr %{buildroot}%{_mandir}/man1/pasta.1 %{buildroot}%{_mandir}/man1/pasta.avx2.1
+install -p -m 755 %{buildroot}%{_bindir}/passt.avx2 %{buildroot}%{_bindir}/pasta.avx2
 %endif
 
 pushd contrib/selinux
-- 
2.39.2


  reply	other threads:[~2023-08-16 18:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-16 18:17 [PATCH v2 0/7] Extensive bandaging for SELinux policy issues, old and new Stefano Brivio
2023-08-16 18:17 ` Stefano Brivio [this message]
2023-08-17  7:53   ` [PATCH v2 1/7] fedora: Install pasta as hard link to ensure SELinux file context match Richard W.M. Jones
2023-08-17 10:53     ` Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 2/7] selinux: Use explicit paths for binaries in file context Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 3/7] selinux: Fix user namespace creation after breaking kernel change Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 4/7] selinux: Update policy to fix user/group settings Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 5/7] selinux: Add rules for sysctl and /proc/net accesses Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 6/7] selinux: Allow pasta_t to read nsfs entries Stefano Brivio
2023-08-16 18:17 ` [PATCH v2 7/7] selinux: Fix domain transitions for typical commands pasta might run Stefano Brivio

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