From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/scripts/selinux/install_policy.sh | 96 ++++++++++++++++++++++++++++--------------------
1 files changed, 56 insertions(+), 40 deletions(-)
diff --git a/kernel/scripts/selinux/install_policy.sh b/kernel/scripts/selinux/install_policy.sh
index 0b86c47..20af56c 100755
--- a/kernel/scripts/selinux/install_policy.sh
+++ b/kernel/scripts/selinux/install_policy.sh
@@ -1,29 +1,60 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
+set -e
if [ `id -u` -ne 0 ]; then
echo "$0: must be root to install the selinux policy"
exit 1
fi
+
SF=`which setfiles`
if [ $? -eq 1 ]; then
- if [ -f /sbin/setfiles ]; then
- SF="/usr/setfiles"
- else
- echo "no selinux tools installed: setfiles"
- exit 1
- fi
+ echo "Could not find setfiles"
+ echo "Do you have policycoreutils installed?"
+ exit 1
+fi
+
+CP=`which checkpolicy`
+if [ $? -eq 1 ]; then
+ echo "Could not find checkpolicy"
+ echo "Do you have checkpolicy installed?"
+ exit 1
+fi
+VERS=`$CP -V | awk '{print $1}'`
+
+ENABLED=`which selinuxenabled`
+if [ $? -eq 1 ]; then
+ echo "Could not find selinuxenabled"
+ echo "Do you have libselinux-utils installed?"
+ exit 1
+fi
+
+if selinuxenabled; then
+ echo "SELinux is already enabled"
+ echo "This prevents safely relabeling all files."
+ echo "Boot with selinux=0 on the kernel command-line or"
+ echo "SELINUX=disabled in /etc/selinux/config."
+ exit 1
fi
cd mdp
-
-CP=`which checkpolicy`
-VERS=`$CP -V | awk '{print $1}'`
-
-./mdp policy.conf file_contexts
-$CP -o policy.$VERS policy.conf
+./mdp -m policy.conf file_contexts
+$CP -U allow -M -o policy.$VERS policy.conf
mkdir -p /etc/selinux/dummy/policy
mkdir -p /etc/selinux/dummy/contexts/files
+
+echo "__default__:user_u:s0" > /etc/selinux/dummy/seusers
+echo "base_r:base_t:s0" > /etc/selinux/dummy/contexts/failsafe_context
+echo "base_r:base_t:s0 base_r:base_t:s0" > /etc/selinux/dummy/default_contexts
+cat > /etc/selinux/dummy/contexts/x_contexts <<EOF
+client * user_u:base_r:base_t:s0
+property * user_u:object_r:base_t:s0
+extension * user_u:object_r:base_t:s0
+selection * user_u:object_r:base_t:s0
+event * user_u:object_r:base_t:s0
+EOF
+touch /etc/selinux/dummy/contexts/virtual_domain_context
+touch /etc/selinux/dummy/contexts/virtual_image_context
cp file_contexts /etc/selinux/dummy/contexts/files
cp dbus_contexts /etc/selinux/dummy/contexts
@@ -33,37 +64,22 @@
if [ ! -d /etc/selinux ]; then
mkdir -p /etc/selinux
fi
-if [ ! -f /etc/selinux/config ]; then
- cat > /etc/selinux/config << EOF
-SELINUX=enforcing
+if [ -f /etc/selinux/config ]; then
+ echo "/etc/selinux/config exists, moving to /etc/selinux/config.bak."
+ mv /etc/selinux/config /etc/selinux/config.bak
+fi
+echo "Creating new /etc/selinux/config for dummy policy."
+cat > /etc/selinux/config << EOF
+SELINUX=permissive
SELINUXTYPE=dummy
EOF
-else
- TYPE=`cat /etc/selinux/config | grep "^SELINUXTYPE" | tail -1 | awk -F= '{ print $2 '}`
- if [ "eq$TYPE" != "eqdummy" ]; then
- selinuxenabled
- if [ $? -eq 0 ]; then
- echo "SELinux already enabled with a non-dummy policy."
- echo "Exiting. Please install policy by hand if that"
- echo "is what you REALLY want."
- exit 1
- fi
- mv /etc/selinux/config /etc/selinux/config.mdpbak
- grep -v "^SELINUXTYPE" /etc/selinux/config.mdpbak >> /etc/selinux/config
- echo "SELINUXTYPE=dummy" >> /etc/selinux/config
- fi
-fi
cd /etc/selinux/dummy/contexts/files
-$SF file_contexts /
+$SF -F file_contexts /
-mounts=`cat /proc/$$/mounts | egrep "ext2|ext3|xfs|jfs|ext4|ext4dev|gfs2" | awk '{ print $2 '}`
-$SF file_contexts $mounts
+mounts=`cat /proc/$$/mounts | \
+ grep -E "ext[234]|jfs|xfs|reiserfs|jffs2|gfs2|btrfs|f2fs|ocfs2" | \
+ awk '{ print $2 '}`
+$SF -F file_contexts $mounts
-
-dodev=`cat /proc/$$/mounts | grep "/dev "`
-if [ "eq$dodev" != "eq" ]; then
- mount --move /dev /mnt
- $SF file_contexts /dev
- mount --move /mnt /dev
-fi
+echo "-F" > /.autorelabel
--
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