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authorScott Murray <scott.murray@konsulko.com>2022-07-25 14:23:13 -0400
committerJan-Simon Moeller <jsmoeller@linuxfoundation.org>2022-07-27 12:31:58 +0000
commit2ea9cbefb8e0923f2f58e7e8022f3e134977a87a (patch)
treed9440b8d8ccfaa496086842eef5ca7d588b58a17 /meta-agl-core/recipes-kernel/linux
parent6c9fa75459cf86576c47411fc239e0d7896d483c (diff)
Add SELinux feature
Add agl-selinux feature to enable SELinux support. Notes: - SELinux is in permissive mode by default for now, and using the targeted policy by default. - The linux-yocto specific bbappend in meta-selinux is masked out in favor of adding a more universal kernel configuration fragment with AGL's own scheme. - SELinux specific recipes and bbappends are added via a meta-selinux dynamic-layers addition in meta-agl-core to keep using meta-selinux optional. This will avoid issues with the Yocto autobuilder testing of meta-agl-core. - To avoid the effectively hard-coded autorelabel on first boot, a bbappend is added to the selinux-autorelabel recipe to remove the flag creation. In the off chance that a build happens on a filesystem without xattr support, the logic in the selinux-image bbclass will still touch the /.autorelabel flag and trigger relabeling. - A systemd unit and script are added with a new systemd-selinux-relabel recipe to handle relabeling of some systemd generated files that do not get handled during root filesystem construction. Some of these can be addressed by some upstream tweaks, but /etc/machine-id will always need special handling unless there is a shift to using read-only or stateless root by default. With this workaround we still avoid doing a full relabel and reboot on first boot, which helps simplify CI. Bug-AGL: SPEC-4332 Signed-off-by: Scott Murray <scott.murray@konsulko.com> Change-Id: Ibf469e11eb3a67709074cc6794b3d12cd5071a90 Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/27790 Tested-by: Jenkins Job builder account ci-image-build: Jenkins Job builder account ci-image-boot-test: Jenkins Job builder account Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Diffstat (limited to 'meta-agl-core/recipes-kernel/linux')
-rw-r--r--meta-agl-core/recipes-kernel/linux/linux-agl-config.inc1
-rw-r--r--meta-agl-core/recipes-kernel/linux/linux/selinux.cfg18
2 files changed, 19 insertions, 0 deletions
diff --git a/meta-agl-core/recipes-kernel/linux/linux-agl-config.inc b/meta-agl-core/recipes-kernel/linux/linux-agl-config.inc
index 81cf0189d..b3ac7373e 100644
--- a/meta-agl-core/recipes-kernel/linux/linux-agl-config.inc
+++ b/meta-agl-core/recipes-kernel/linux/linux-agl-config.inc
@@ -39,6 +39,7 @@ AGL_KCONFIG_FRAGMENTS += " \
can-bus.cfg \
fanotify.cfg \
overlayfs.cfg \
+ ${@bb.utils.contains('DISTRO_FEATURES', 'selinux', 'selinux.cfg', '', d)} \
"
AGL_KCONFIG_FRAGMENTS += " ${@bb.utils.contains('AGL_XEN_GUEST_WANTED','1','xen_domu.cfg','',d)}"
diff --git a/meta-agl-core/recipes-kernel/linux/linux/selinux.cfg b/meta-agl-core/recipes-kernel/linux/linux/selinux.cfg
new file mode 100644
index 000000000..86330f110
--- /dev/null
+++ b/meta-agl-core/recipes-kernel/linux/linux/selinux.cfg
@@ -0,0 +1,18 @@
+CONFIG_AUDIT=y
+CONFIG_AUDIT_GENERIC=y
+CONFIG_NETWORK_SECMARK=y
+CONFIG_EXT2_FS_SECURITY=y
+CONFIG_EXT3_FS_SECURITY=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_JFS_SECURITY=y
+CONFIG_REISERFS_FS_SECURITY=y
+CONFIG_JFFS2_FS_SECURITY=y
+CONFIG_SECURITY=y
+CONFIG_SECURITYFS=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SECURITY_SELINUX_BOOTPARAM=y
+CONFIG_SECURITY_SELINUX_DISABLE=y
+CONFIG_SECURITY_SELINUX_DEVELOP=y
+CONFIG_SECURITY_SELINUX_AVC_STATS=y
+CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1