[Buildroot] [PATCH 1/2] linux-pam: adjust login pam file for SELinux
Bryce Ferguson
bryce.ferguson at rockwellcollins.com
Thu Dec 22 16:25:18 UTC 2016
On Tue, Dec 6, 2016 at 2:27 PM, Thomas Petazzoni
<thomas.petazzoni at free-electrons.com> wrote:
> When SELinux support is enabled, the login pam file installed by
> linux-pam should be adjusted to use the pam_selinux.so module.
>
> To achieve this in a reasonably simple manner, we introduce the SELinux
> related lines in login.pam as comments, and if SELinux support is
> enabled, turn those commented lines into real lines.
>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Performed a build with this package enabled using the qemu selinux
defconfig which is part of the outstanding v13 patchset found
here:http://patchwork.ozlabs.org/bundle/UraniumKnight/rc_selinux_v13/.
For the test, this was applied in the stead of PATCH 4/8
(http://patchwork.ozlabs.org/patch/686677/)
Tested-by: Bryce Ferguson <bryce.ferguson at rockwellcollins.com>
> ---
> package/linux-pam/linux-pam.mk | 5 +++++
> package/linux-pam/login.pam | 2 ++
> 2 files changed, 7 insertions(+)
>
> diff --git a/package/linux-pam/linux-pam.mk b/package/linux-pam/linux-pam.mk
> index 6ce3839..c8ba30f 100644
> --- a/package/linux-pam/linux-pam.mk
> +++ b/package/linux-pam/linux-pam.mk
> @@ -29,6 +29,10 @@ endif
> ifeq ($(BR2_PACKAGE_LIBSELINUX),y)
> LINUX_PAM_CONF_OPTS += --enable-selinux
> LINUX_PAM_DEPENDENCIES += libselinux
> +define LINUX_PAM_SELINUX_PAMFILE_TWEAK
> + $(SED) 's/^# \(.*pam_selinux.so.*\)$$/\1/' \
> + $(TARGET_DIR)/etc/pam.d/login
> +endef
> else
> LINUX_PAM_CONF_OPTS += --disable-selinux
> endif
> @@ -46,6 +50,7 @@ define LINUX_PAM_INSTALL_CONFIG
> $(TARGET_DIR)/etc/pam.d/login
> $(INSTALL) -m 0644 -D package/linux-pam/other.pam \
> $(TARGET_DIR)/etc/pam.d/other
> + $(LINUX_PAM_SELINUX_PAMFILE_TWEAK)
> endef
>
> LINUX_PAM_POST_INSTALL_TARGET_HOOKS += LINUX_PAM_INSTALL_CONFIG
> diff --git a/package/linux-pam/login.pam b/package/linux-pam/login.pam
> index 01f5632..5df7db6 100644
> --- a/package/linux-pam/login.pam
> +++ b/package/linux-pam/login.pam
> @@ -4,7 +4,9 @@ account required pam_unix.so
>
> password required pam_unix.so nullok
>
> +# session required pam_selinux.so close
> session required pam_limits.so
> session required pam_env.so
> session required pam_unix.so
> session optional pam_lastlog.so
> +# session required pam_selinux.so open
> --
> 2.7.4
>
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