From 93e95ff085a9877e5ab981db18b2ba37409b3cb2 Mon Sep 17 00:00:00 2001
From: Zdenek Pytela <zpytela@redhat.com>
Date: Thu, 24 Sep 2020 13:12:54 +0200
Reference: https://github.com/fedora-selinux/selinux-policy/commit/93e95ff085a9877e5ab981db18b2ba37409b3cb2
Conflict: NA
Subject: [PATCH] Allow domain write to an automount unnamed pipe

With the kernel commit 13c164b1a186 ("autofs: switch to kernel_write"),
an additional LSM permission check is done when a process tries to
access a directory on an autofs volume, which has not been mounted yet,
and it results in a write operation to the automount pipe.

This commit allows any domain write to the unnamed pipe kernel uses to
communicate with automount to service the directory access request and
should be considered a temporary workaround until a different
implementation in kernel is found.

Resolves: rhbz#1874338
---
 policy/modules/kernel/domain.te | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/policy/modules/kernel/domain.te b/policy/modules/kernel/domain.te
index b883be0..c77a6fe 100644
--- a/policy/modules/kernel/domain.te
+++ b/policy/modules/kernel/domain.te
@@ -570,6 +570,12 @@ optional_policy(`
 ')
 
 optional_policy(`
+	# A workaround to handle additional permissions check
+	# introduced as an involuntary result of a kernel change
+	automount_write_pipes(domain)
+')
+
+optional_policy(`
 	sosreport_append_tmp_files(domain)
 ')
 
-- 
1.8.3.1

