diff options
Diffstat (limited to 'meta-security/recipes-core/smack-system-setup')
5 files changed, 81 insertions, 0 deletions
diff --git a/meta-security/recipes-core/smack-system-setup/files/55-udev-smack-default.rules b/meta-security/recipes-core/smack-system-setup/files/55-udev-smack-default.rules new file mode 100644 index 000000000..3829019de --- /dev/null +++ b/meta-security/recipes-core/smack-system-setup/files/55-udev-smack-default.rules @@ -0,0 +1,23 @@ +# do not edit this file, it will be overwritten on update + +KERNEL=="null", SECLABEL{smack}="*" +KERNEL=="zero", SECLABEL{smack}="*" +KERNEL=="console", SECLABEL{smack}="*" +KERNEL=="kmsg", SECLABEL{smack}="*" +KERNEL=="video*", SECLABEL{smack}="*" +KERNEL=="card*", SECLABEL{smack}="*" +KERNEL=="ptmx", SECLABEL{smack}="*" +KERNEL=="tty", SECLABEL{smack}="*" + +SUBSYSTEM=="graphics", GROUP="video", SECLABEL{smack}="*" +SUBSYSTEM=="drm", GROUP="video", SECLABEL{smack}="*" +SUBSYSTEM=="dvb", GROUP="video", SECLABEL{smack}="*" + +SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666", SECLABEL{smack}="*" +SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666", SECLABEL{smack}="*" +SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620", SECLABEL{smack}="*" +SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*", GROUP="tty", SECLABEL{smack}="*" +KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*", GROUP="dialout", SECLABEL{smack}="*" + +SUBSYSTEM=="input", KERNEL=="mouse*|mice|event*", MODE="0640", SECLABEL{smack}="*" +SUBSYSTEM=="input", KERNEL=="ts[0-9]*|uinput", MODE="0640", SECLABEL{smack}="*" diff --git a/meta-security/recipes-core/smack-system-setup/files/systemd-journald.service.conf b/meta-security/recipes-core/smack-system-setup/files/systemd-journald.service.conf new file mode 100644 index 000000000..7035a1410 --- /dev/null +++ b/meta-security/recipes-core/smack-system-setup/files/systemd-journald.service.conf @@ -0,0 +1,16 @@ +# Run systemd-journald with the hat ("^") Smack label. +# +# The journal daemon needs global read access to gather information +# about the services spawned by systemd. The hat label is intended +# for this purpose. The journal daemon is the only part of the +# System domain that needs read access to the User domain. Giving +# the journal daemon the hat label means that we can remove the +# System domain's read access to the User domain and we can avoid +# hard-coding a specific label name for that domain. +# +# Original author: Casey Schaufler <casey@schaufler-ca.com> +# +# This is considered a configuration change and thus distro specific. +[Service] +SmackProcessLabel=^ + diff --git a/meta-security/recipes-core/smack-system-setup/files/systemd-tmpfiles-setup.service.conf b/meta-security/recipes-core/smack-system-setup/files/systemd-tmpfiles-setup.service.conf new file mode 100644 index 000000000..db43c8c51 --- /dev/null +++ b/meta-security/recipes-core/smack-system-setup/files/systemd-tmpfiles-setup.service.conf @@ -0,0 +1,2 @@ +[Service] +ExecStartPost=/bin/sh -c '([ ! -d /var/tmp ] || chsmack -L -a \"*\" /var/tmp) && ([ ! -d /var/log ] || chsmack -L -a System::Log /var/log && chsmack -L -t /var/log)' diff --git a/meta-security/recipes-core/smack-system-setup/files/tmp.mount.conf b/meta-security/recipes-core/smack-system-setup/files/tmp.mount.conf new file mode 100644 index 000000000..388986e82 --- /dev/null +++ b/meta-security/recipes-core/smack-system-setup/files/tmp.mount.conf @@ -0,0 +1,12 @@ +# Mount /tmp publicly accessable. Based on patch by Michael Demeter <michael.demeter@intel.com>. +# Upstream systemd temporarily had SmackFileSystemRoot for this (https://github.com/systemd/systemd/pull/1664), +# but it was removed again (https://github.com/systemd/systemd/issues/1696) because +# util-linux mount will ignore smackfsroot when Smack is not active. However, +# busybox is not that intelligent. +# +# When using busybox mount, adding smackfsroot=* and booting without +# Smack (i.e. security=none), tmp.mount will fail with an error about +# "Bad mount option smackfsroot". +[Mount] +Options=smackfsroot=* + diff --git a/meta-security/recipes-core/smack-system-setup/smack-system-setup_1.bb b/meta-security/recipes-core/smack-system-setup/smack-system-setup_1.bb new file mode 100644 index 000000000..49b12ad3f --- /dev/null +++ b/meta-security/recipes-core/smack-system-setup/smack-system-setup_1.bb @@ -0,0 +1,28 @@ +DESCRIPTION = "setup of a system using smack" +LICENSE = "GPLv2" +LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6" + +SRC_URI = "\ + file://55-udev-smack-default.rules \ + file://systemd-journald.service.conf \ + file://systemd-tmpfiles-setup.service.conf \ + file://tmp.mount.conf \ +" + +RDEPENDS_${PN}_append_with-lsm-smack = " smack" + +do_install_append_with-lsm-smack() { + # tuning systemd units + install -Dm0644 ${WORKDIR}/systemd-tmpfiles-setup.service.conf \ + ${D}${systemd_unitdir}/system/systemd-tmpfiles-setup.service.d/smack.conf + install -Dm0644 ${WORKDIR}/systemd-journald.service.conf \ + ${D}${systemd_unitdir}/system/systemd-journald.service.d/smack.conf + install -Dm0644 ${WORKDIR}/tmp.mount.conf \ + ${D}${systemd_unitdir}/system/tmp.mount.d/smack.conf + + # add udev rules + install -Dm0644 ${WORKDIR}/55-udev-smack-default.rules \ + ${D}${sysconfdir}/udev/rules.d/55-udev-smack-default.rules +} + +FILES_${PN} += "${systemd_unitdir}" |