From aee58d52ce616fc1d74c15fec01e751e9c2c1dd5 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Date: Sat, 18 Jul 2020 08:01:54 -0500 Subject: [PATCH] build: add support for SELinux to include/image.mk This allows the build process to prepare a squashfs filesystem for use with SELinux. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [rebase, add commit message] Signed-off-by: W. Michael Petullo <mike@flyn.org> --- config/Config-build.in | 10 ++++++++++ include/image.mk | 19 ++++++++++++++++++- 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/config/Config-build.in b/config/Config-build.in index 499f84690f5..fc94f4d45e0 100644 --- a/config/Config-build.in +++ b/config/Config-build.in @@ -328,4 +328,14 @@ menu "Global build settings" bool "Full" endchoice + config TARGET_ROOTFS_SECURITY_LABELS + bool "Enable rootfs security labels" + select KERNEL_SQUASHFS_XATTR + select KERNEL_EXT4_FS_SECURITY + select KERNEL_F2FS_FS_SECURITY + select KERNEL_UBIFS_FS_SECURITY + select KERNEL_JFFS2_FS_SECURITY + select PACKAGE_refpolicy + help + This option enables the usage of SELinux labels endmenu diff --git a/include/image.mk b/include/image.mk index e8c2cf7100d..3a12db36765 100644 --- a/include/image.mk +++ b/include/image.mk @@ -234,13 +234,30 @@ endef $(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S)))) $(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S)))) -define Image/mkfs/squashfs +define Image/mkfs/squashfs-common $(STAGING_DIR_HOST)/bin/mksquashfs4 $(call mkfs_target_dir,$(1)) $@ \ -nopad -noappend -root-owned \ -comp $(SQUASHFSCOMP) $(SQUASHFSOPT) \ -processors 1 endef +ifeq ($(CONFIG_TARGET_ROOTFS_SECURITY_LABELS),y) +define Image/mkfs/squashfs + echo "LD_LIBRARY_PATH=\$$LD_LIBRARY_PATH:$(STAGING_DIR_HOSTPKG)/lib" \ + "$(STAGING_DIR_HOSTPKG)/sbin/setfiles -r" \ + "$(call mkfs_target_dir,$(1))" \ + "$(call mkfs_target_dir,$(1))/etc/selinux/targeted/contexts/files/file_contexts " \ + "$(call mkfs_target_dir,$(1))" > $@.fakeroot-script + echo "$(Image/mkfs/squashfs-common)" >> $@.fakeroot-script + chmod +x $@.fakeroot-script + $(STAGING_DIR_HOST)/bin/fakeroot $@.fakeroot-script +endef +else +define Image/mkfs/squashfs + $(call Image/mkfs/squashfs-common,$(1)) +endef +endif + # $(1): board name # $(2): rootfs type # $(3): kernel image -- GitLab