1 files changed, 54 insertions, 38 deletions

diff --git a/scripts/selinux/install_policy.sh b/scripts/selinux/install_policy.sh
index 0b86c47baf7d..2dccf141241d 100755
--- a/scripts/selinux/install_policy.sh
+++ b/scripts/selinux/install_policy.sh
@@ -1,30 +1,61 @@
 #!/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
 
-cd mdp
-
 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}'`
 
-./mdp policy.conf file_contexts
-$CP -o policy.$VERS policy.conf
+ENABLED=`which selinuxenabled`
+if [ $? -eq 1 ]; then
+        echo "Could not find selinuxenabled"
+        echo "Do you have libselinux-utils installed?"
+        exit 1
+fi
+
+if selinuxenabled; then
+    echo "SELinux is already enabled"
+    echo "This prevents safely relabeling all files."
+    echo "Boot with selinux=0 on the kernel command-line or"
+    echo "SELINUX=disabled in /etc/selinux/config."
+    exit 1
+fi
+
+cd mdp
+./mdp -m policy.conf file_contexts
+$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
 cp policy.$VERS /etc/selinux/dummy/policy
@@ -33,37 +64,22 @@ FC_FILE=/etc/selinux/dummy/contexts/files/file_contexts
 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 | \
+        egrep "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