From e070dd2df0f98fa28389855628a5af3c87d01a6c Mon Sep 17 00:00:00 2001 From: Chris PeBenito Date: Oct 04 2006 17:25:34 +0000 Subject: - Move range transitions to modules. - Make number of MLS sensitivities, and number of MLS and MCS categories configurable as build options. --- diff --git a/Changelog b/Changelog index c87f076..8021b3e 100644 --- a/Changelog +++ b/Changelog @@ -1,3 +1,6 @@ +- Move range transitions to modules. +- Make number of MLS sensitivities, and number of MLS and MCS + categories configurable as build options. - Add role infrastructure. - Debian updates from Erich Schubert. - Add nscd_socket_use() to auth_use_nsswitch(). diff --git a/Makefile b/Makefile index 5382fc4..423612f 100644 --- a/Makefile +++ b/Makefile @@ -208,11 +208,16 @@ ifeq ($(DIRECT_INITRC),y) M4PARAM += -D direct_sysadm_daemon endif +# default MLS/MCS sensitivity and category settings. +MLS_SENS ?= 16 +MLS_CATS ?= 256 +MCS_CATS ?= 256 + ifeq ($(QUIET),y) verbose = @ endif -M4PARAM += -D hide_broken_symptoms +M4PARAM += -D mls_num_sens=$(MLS_SENS) -D mls_num_cats=$(MLS_CATS) -D mcs_num_cats=$(MCS_CATS) -D hide_broken_symptoms # we need exuberant ctags; unfortunately it is named # differently on different distros @@ -454,7 +459,15 @@ $(userpath)/local.users: config/local.users ######################################## # -# Appconfig files +# Build Appconfig files +# +$(tmpdir)/initrc_context: $(appconf)/initrc_context + @mkdir -p $(tmpdir) + $(verbose) $(M4) $(M4PARAM) $(m4support) $^ | $(GREP) '^[a-z]' > $@ + +######################################## +# +# Install Appconfig files # install-appconfig: $(appfiles) @@ -485,7 +498,7 @@ $(appdir)/userhelper_context: $(appconf)/userhelper_context @mkdir -p $(appdir) $(verbose) $(INSTALL) -m 644 $< $@ -$(appdir)/initrc_context: $(appconf)/initrc_context +$(appdir)/initrc_context: $(tmpdir)/initrc_context @mkdir -p $(appdir) $(verbose) $(INSTALL) -m 644 $< $@ @@ -527,6 +540,9 @@ endif $(verbose) echo "MONOLITHIC ?= n" >> $(headerdir)/build.conf $(verbose) echo "DIRECT_INITRC ?= $(DIRECT_INITRC)" >> $(headerdir)/build.conf $(verbose) echo "POLY ?= $(POLY)" >> $(headerdir)/build.conf + $(verbose) echo "override MLS_SENS := $(MLS_SENS)" >> $(headerdir)/build.conf + $(verbose) echo "override MLS_CATS := $(MLS_CATS)" >> $(headerdir)/build.conf + $(verbose) echo "override MCS_CATS := $(MCS_CATS)" >> $(headerdir)/build.conf $(verbose) $(INSTALL) -m 644 $(support)/Makefile.devel $(headerdir)/Makefile ######################################## diff --git a/Rules.modular b/Rules.modular index 63e60f8..e2d6686 100644 --- a/Rules.modular +++ b/Rules.modular @@ -88,15 +88,19 @@ $(builddir)%.pp: $(tmpdir)/%.mod $(tmpdir)/%.mod.fc # # Create a base module package # -$(base_pkg): $(base_mod) $(base_fc) $(users_extra) $(seusers) $(net_contexts) +$(base_pkg): $(base_mod) $(base_fc) $(users_extra) $(tmpdir)/seusers $(net_contexts) @echo "Creating $(NAME) base module package" @test -d $(builddir) || mkdir -p $(builddir) - $(verbose) $(SEMOD_PKG) -o $@ -m $(base_mod) -f $(base_fc) -u $(users_extra) -s $(seusers) -n $(net_contexts) + $(verbose) $(SEMOD_PKG) -o $@ -m $(base_mod) -f $(base_fc) -u $(users_extra) -s $(tmpdir)/seusers -n $(net_contexts) $(base_mod): $(base_conf) @echo "Compiling $(NAME) base module" $(verbose) $(CHECKMODULE) $^ -o $@ +$(tmpdir)/seusers: $(seusers) + @mkdir -p $(tmpdir) + $(verbose) $(M4) $(M4PARAM) $(m4support) $^ | $(GREP) '^[a-z_]' > $@ + $(users_extra): $(m4support) $(user_files) @test -d $(tmpdir) || mkdir -p $(tmpdir) $(verbose) $(M4) $(M4PARAM) -D users_extra $^ | \ diff --git a/build.conf b/build.conf index 7bfd7e7..5e721ea 100644 --- a/build.conf +++ b/build.conf @@ -46,6 +46,20 @@ MONOLITHIC=y # Enable polyinstantiated directory support. POLY=n +# Number of MLS Sensitivities +# The sensitivities will be s0 to s(MLS_SENS-1). +# Dominance will be in increasing numerical order +# with s0 being lowest. +MLS_SENS=16 + +# Number of MLS Categories +# The categories will be c0 to c(MLS_CATS-1). +MLS_CATS=256 + +# Number of MCS Categories +# The categories will be c0 to c(MLS_CATS-1). +MCS_CATS=256 + # Set this to y to only display status messages # during build. QUIET=n diff --git a/config/appconfig-strict-mcs/seusers b/config/appconfig-strict-mcs/seusers index c400c79..ce614b4 100644 --- a/config/appconfig-strict-mcs/seusers +++ b/config/appconfig-strict-mcs/seusers @@ -1,2 +1,2 @@ -root:root:s0-s0:c0.c255 +root:root:s0-mcs_systemhigh __default__:user_u:s0 diff --git a/config/appconfig-strict-mls/initrc_context b/config/appconfig-strict-mls/initrc_context index 5435ea4..4598f92 100644 --- a/config/appconfig-strict-mls/initrc_context +++ b/config/appconfig-strict-mls/initrc_context @@ -1 +1 @@ -system_u:system_r:initrc_t:s0-s15:c0.c255 +system_u:system_r:initrc_t:s0-mls_systemhigh diff --git a/config/appconfig-strict-mls/seusers b/config/appconfig-strict-mls/seusers index 9a0516d..4e500b0 100644 --- a/config/appconfig-strict-mls/seusers +++ b/config/appconfig-strict-mls/seusers @@ -1,2 +1,2 @@ -root:root:s0-s15:c0.c255 +root:root:s0-mls_systemhigh __default__:user_u:s0 diff --git a/config/appconfig-targeted-mcs/seusers b/config/appconfig-targeted-mcs/seusers index c400c79..ce614b4 100644 --- a/config/appconfig-targeted-mcs/seusers +++ b/config/appconfig-targeted-mcs/seusers @@ -1,2 +1,2 @@ -root:root:s0-s0:c0.c255 +root:root:s0-mcs_systemhigh __default__:user_u:s0 diff --git a/config/appconfig-targeted-mls/initrc_context b/config/appconfig-targeted-mls/initrc_context index 63a0923..13645ea 100644 --- a/config/appconfig-targeted-mls/initrc_context +++ b/config/appconfig-targeted-mls/initrc_context @@ -1 +1 @@ -user_u:system_r:initrc_t:s0-s15:c0.c255 +user_u:system_r:initrc_t:s0-mls_systemhigh diff --git a/config/appconfig-targeted-mls/seusers b/config/appconfig-targeted-mls/seusers index 9a0516d..4e500b0 100644 --- a/config/appconfig-targeted-mls/seusers +++ b/config/appconfig-targeted-mls/seusers @@ -1,2 +1,2 @@ -root:root:s0-s15:c0.c255 +root:root:s0-mls_systemhigh __default__:user_u:s0 diff --git a/policy/mcs b/policy/mcs index d51cf97..aeb24bd 100644 --- a/policy/mcs +++ b/policy/mcs @@ -2,32 +2,23 @@ ifdef(`enable_mcs',` # # Define sensitivities # -# Each sensitivity has a name and zero or more aliases. -# # MCS is single-sensitivity. -# -sensitivity s0; - -# -# Define the ordering of the sensitivity levels (least to greatest) -# -dominance { s0 } +gen_sens(1) # # Define the categories # -# Each category has a name and zero or more aliases. -# +# Generate declarations -# generate declarations for c0 to c255 -gen_cats(256) +gen_cats(mcs_num_cats) # # Each MCS level specifies a sensitivity and zero or more categories which may # be associated with that sensitivity. # -level s0:c0.c255; + +gen_levels(1,mcs_num_cats) # # Define the MCS policy diff --git a/policy/mls b/policy/mls index 5a136d1..9398d84 100644 --- a/policy/mls +++ b/policy/mls @@ -2,62 +2,26 @@ ifdef(`enable_mls',` # # Define sensitivities # -# Each sensitivity has a name and zero or more aliases. -# -sensitivity s0; -sensitivity s1; -sensitivity s2; -sensitivity s3; -sensitivity s4; -sensitivity s5; -sensitivity s6; -sensitivity s7; -sensitivity s8; -sensitivity s9; -sensitivity s10; -sensitivity s11; -sensitivity s12; -sensitivity s13; -sensitivity s14; -sensitivity s15; - -# -# Define the ordering of the sensitivity levels (least to greatest) -# -dominance { s0 s1 s2 s3 s4 s5 s6 s7 s8 s9 s10 s11 s12 s13 s14 s15 } +# Domination of sensitivities is in increasin +# numerical order, with s0 being the lowest +gen_sens(mls_num_sens) # # Define the categories # -# Each category has a name and zero or more aliases. -# - -# generate declarations for c0 to c255 -gen_cats(256) +# Generate declarations +gen_cats(mls_num_cats) # # Each MLS level specifies a sensitivity and zero or more categories which may # be associated with that sensitivity. # -level s0:c0.c255; -level s1:c0.c255; -level s2:c0.c255; -level s3:c0.c255; -level s4:c0.c255; -level s5:c0.c255; -level s6:c0.c255; -level s7:c0.c255; -level s8:c0.c255; -level s9:c0.c255; -level s10:c0.c255; -level s11:c0.c255; -level s12:c0.c255; -level s13:c0.c255; -level s14:c0.c255; -level s15:c0.c255; +# Generate levels from all sensitivities +# with all categories +gen_levels(mls_num_sens,mls_num_cats) # # Define the MLS policy diff --git a/policy/modules/kernel/corenetwork.te.in b/policy/modules/kernel/corenetwork.te.in index d3e7246..610cd10 100644 --- a/policy/modules/kernel/corenetwork.te.in +++ b/policy/modules/kernel/corenetwork.te.in @@ -165,15 +165,15 @@ portcon udp 1-1023 gen_context(system_u:object_r:reserved_port_t, s0) # nodes in net_contexts or net_contexts.mls. # type node_t, node_type; -sid node gen_context(system_u:object_r:node_t,s0 - s15:c0.c255) +sid node gen_context(system_u:object_r:node_t,s0 - mls_systemhigh) network_node(compat_ipv4, s0, ::, ffff:ffff:ffff:ffff:ffff:ffff::) network_node(inaddr_any, s0, 0.0.0.0, 255.255.255.255) type node_internal_t, node_type; dnl network_node(internal, s0, , ) # no nodecon for this in current strict policy network_node(link_local, s0, fe80::, ffff:ffff:ffff:ffff::, ) -network_node(lo, s0 - s15:c0.c255, 127.0.0.1, 255.255.255.255) +network_node(lo, s0 - mls_systemhigh, 127.0.0.1, 255.255.255.255) network_node(mapped_ipv4, s0, ::ffff:0000:0000, ffff:ffff:ffff:ffff:ffff:ffff::) -network_node(multicast, s0 - s15:c0.c255, ff00::, ff00::) +network_node(multicast, s0 - mls_systemhigh, ff00::, ff00::) network_node(site_local, s0, fec0::, ffc0::) network_node(unspec, s0, ::, ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff) @@ -186,10 +186,10 @@ network_node(unspec, s0, ::, ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff) # netif_t is the default type of network interfaces. # type netif_t, netif_type; -sid netif gen_context(system_u:object_r:netif_t,s0 - s15:c0.c255) +sid netif gen_context(system_u:object_r:netif_t,s0 - mls_systemhigh) build_option(`enable_mls',` -network_interface(lo, lo,s0 - s15:c0.c255) +network_interface(lo, lo,s0 - mls_systemhigh) ') ######################################## diff --git a/policy/modules/kernel/devices.fc b/policy/modules/kernel/devices.fc index 7ded82b..9967dc0 100644 --- a/policy/modules/kernel/devices.fc +++ b/policy/modules/kernel/devices.fc @@ -25,10 +25,10 @@ /dev/i915 -c gen_context(system_u:object_r:dri_device_t,s0) /dev/irlpt[0-9]+ -c gen_context(system_u:object_r:printer_device_t,s0) /dev/js.* -c gen_context(system_u:object_r:mouse_device_t,s0) -/dev/kmem -c gen_context(system_u:object_r:memory_device_t,s15:c0.c255) +/dev/kmem -c gen_context(system_u:object_r:memory_device_t,mls_systemhigh) /dev/logibm -c gen_context(system_u:object_r:mouse_device_t,s0) /dev/lp.* -c gen_context(system_u:object_r:printer_device_t,s0) -/dev/mem -c gen_context(system_u:object_r:memory_device_t,s15:c0.c255) +/dev/mem -c gen_context(system_u:object_r:memory_device_t,mls_systemhigh) /dev/mice -c gen_context(system_u:object_r:mouse_device_t,s0) /dev/microcode -c gen_context(system_u:object_r:cpu_device_t,s0) /dev/midi.* -c gen_context(system_u:object_r:sound_device_t,s0) @@ -37,11 +37,11 @@ /dev/mpu401.* -c gen_context(system_u:object_r:sound_device_t,s0) /dev/null -c gen_context(system_u:object_r:null_device_t,s0) /dev/nvidia.* -c gen_context(system_u:object_r:xserver_misc_device_t,s0) -/dev/nvram -c gen_context(system_u:object_r:nvram_device_t,s15:c0.c255) +/dev/nvram -c gen_context(system_u:object_r:nvram_device_t,mls_systemhigh) /dev/par.* -c gen_context(system_u:object_r:printer_device_t,s0) /dev/patmgr[01] -c gen_context(system_u:object_r:sound_device_t,s0) /dev/pmu -c gen_context(system_u:object_r:power_device_t,s0) -/dev/port -c gen_context(system_u:object_r:memory_device_t,s15:c0.c255) +/dev/port -c gen_context(system_u:object_r:memory_device_t,mls_systemhigh) /dev/(misc/)?psaux -c gen_context(system_u:object_r:mouse_device_t,s0) /dev/rmidi.* -c gen_context(system_u:object_r:sound_device_t,s0) /dev/radeon -c gen_context(system_u:object_r:dri_device_t,s0) diff --git a/policy/modules/kernel/files.fc b/policy/modules/kernel/files.fc index 1433644..3fd01d9 100644 --- a/policy/modules/kernel/files.fc +++ b/policy/modules/kernel/files.fc @@ -29,7 +29,7 @@ ifdef(`distro_suse',` /boot -d gen_context(system_u:object_r:boot_t,s0) /boot/.* gen_context(system_u:object_r:boot_t,s0) /boot/\.journal <> -/boot/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/boot/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /boot/lost\+found/.* <> /boot/System\.map(-.*)? -- gen_context(system_u:object_r:system_map_t,s0) @@ -92,9 +92,9 @@ ifdef(`distro_suse',` # HOME_ROOT # expanded by genhomedircon # -HOME_ROOT -d gen_context(system_u:object_r:home_root_t,s0-s15:c0.c255) +HOME_ROOT -d gen_context(system_u:object_r:home_root_t,s0-mls_systemhigh) HOME_ROOT/\.journal <> -HOME_ROOT/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +HOME_ROOT/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) HOME_ROOT/lost\+found/.* <> # @@ -112,7 +112,7 @@ HOME_ROOT/lost\+found/.* <> # # /lost+found # -/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /lost\+found/.* <> # @@ -176,11 +176,11 @@ HOME_ROOT/lost\+found/.* <> # # /tmp # -/tmp -d gen_context(system_u:object_r:tmp_t,s0-s15:c0.c255) +/tmp -d gen_context(system_u:object_r:tmp_t,s0-mls_systemhigh) /tmp/.* <> /tmp/\.journal <> -/tmp/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/tmp/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /tmp/lost\+found/.* <> # @@ -200,12 +200,12 @@ HOME_ROOT/lost\+found/.* <> /usr/local/etc(/.*)? gen_context(system_u:object_r:etc_t,s0) -/usr/local/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/usr/local/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /usr/local/lost\+found/.* <> /usr/local/src(/.*)? gen_context(system_u:object_r:src_t,s0) -/usr/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/usr/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /usr/lost\+found/.* <> /usr/share(/.*)?/lib(64)?(/.*)? gen_context(system_u:object_r:usr_t,s0) @@ -213,7 +213,7 @@ HOME_ROOT/lost\+found/.* <> /usr/src(/.*)? gen_context(system_u:object_r:src_t,s0) /usr/src/kernels/.+/lib(/.*)? gen_context(system_u:object_r:usr_t,s0) -/usr/tmp -d gen_context(system_u:object_r:tmp_t,s0-s15:c0.c255) +/usr/tmp -d gen_context(system_u:object_r:tmp_t,s0-mls_systemhigh) /usr/tmp/.* <> # @@ -233,18 +233,18 @@ HOME_ROOT/lost\+found/.* <> /var/lock(/.*)? gen_context(system_u:object_r:var_lock_t,s0) -/var/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/var/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /var/lost\+found/.* <> -/var/run -d gen_context(system_u:object_r:var_run_t,s0-s15:c0.c255) +/var/run -d gen_context(system_u:object_r:var_run_t,s0-mls_systemhigh) /var/run/.* gen_context(system_u:object_r:var_run_t,s0) /var/run/.*\.*pid <> /var/spool(/.*)? gen_context(system_u:object_r:var_spool_t,s0) /var/spool/postfix/etc(/.*)? gen_context(system_u:object_r:etc_t,s0) -/var/tmp -d gen_context(system_u:object_r:tmp_t,s0-s15:c0.c255) +/var/tmp -d gen_context(system_u:object_r:tmp_t,s0-mls_systemhigh) /var/tmp/.* <> -/var/tmp/lost\+found -d gen_context(system_u:object_r:lost_found_t,s15:c0.c255) +/var/tmp/lost\+found -d gen_context(system_u:object_r:lost_found_t,mls_systemhigh) /var/tmp/lost\+found/.* <> /var/tmp/vi\.recover -d gen_context(system_u:object_r:tmp_t,s0) diff --git a/policy/modules/kernel/kernel.if b/policy/modules/kernel/kernel.if index 11e0807..13da037 100644 --- a/policy/modules/kernel/kernel.if +++ b/policy/modules/kernel/kernel.if @@ -37,6 +37,45 @@ interface(`kernel_domtrans_to',` ######################################## ## +## Allows to start userland processes +## by transitioning to the specified domain, +## with a range transition. +## +## +## +## The process type entered by kernel. +## +## +## +## +## The executable type for the entrypoint. +## +## +## +## +## Range for the domain. +## +## +# +interface(`kernel_ranged_domtrans_to',` + gen_require(` + type kernel_t; + ') + + + kernel_domtrans_to($1,$2) + + ifdef(`enable_mcs',` + range_transition kernel_t $2:process $3; + ') + + ifdef(`enable_mls',` + range_transition kernel_t $2:process $3; + ') +') + +######################################## +## ## Allows the kernel to mount filesystems on ## the specified directory type. ## diff --git a/policy/modules/kernel/kernel.te b/policy/modules/kernel/kernel.te index 5fe4843..b343642 100644 --- a/policy/modules/kernel/kernel.te +++ b/policy/modules/kernel/kernel.te @@ -39,7 +39,7 @@ type kernel_t, can_load_kernmodule; domain_base_type(kernel_t) mls_rangetrans_source(kernel_t) role system_r types kernel_t; -sid kernel gen_context(system_u:system_r:kernel_t,s15:c0.c255) +sid kernel gen_context(system_u:system_r:kernel_t,mls_systemhigh) # # DebugFS @@ -62,13 +62,13 @@ genfscon proc /sysvipc gen_context(system_u:object_r:proc_t,s0) # kernel message interface type proc_kmsg_t, proc_type; -genfscon proc /kmsg gen_context(system_u:object_r:proc_kmsg_t,s15:c0.c255) +genfscon proc /kmsg gen_context(system_u:object_r:proc_kmsg_t,mls_systemhigh) neverallow ~{ can_receive_kernel_messages kern_unconfined } proc_kmsg_t:file ~getattr; # /proc kcore: inaccessible type proc_kcore_t, proc_type; neverallow ~kern_unconfined proc_kcore_t:file ~getattr; -genfscon proc /kcore gen_context(system_u:object_r:proc_kcore_t,s15:c0.c255) +genfscon proc /kcore gen_context(system_u:object_r:proc_kcore_t,mls_systemhigh) type proc_mdstat_t, proc_type; genfscon proc /mdstat gen_context(system_u:object_r:proc_mdstat_t,s0) @@ -136,18 +136,18 @@ genfscon proc /sys/dev gen_context(system_u:object_r:sysctl_dev_t,s0) # have labels that are no longer valid are treated as having this type. # type unlabeled_t; -sid unlabeled gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) +sid unlabeled gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) # These initial sids are no longer used, and can be removed: -sid any_socket gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) +sid any_socket gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) sid file_labels gen_context(system_u:object_r:unlabeled_t,s0) -sid icmp_socket gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) -sid igmp_packet gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) +sid icmp_socket gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) +sid igmp_packet gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) sid init gen_context(system_u:object_r:unlabeled_t,s0) -sid kmod gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) -sid netmsg gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) -sid policy gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) -sid scmp_packet gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) +sid kmod gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) +sid netmsg gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) +sid policy gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) +sid scmp_packet gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) sid sysctl_modprobe gen_context(system_u:object_r:unlabeled_t,s0) sid sysctl_fs gen_context(system_u:object_r:unlabeled_t,s0) sid sysctl_kernel gen_context(system_u:object_r:unlabeled_t,s0) @@ -155,7 +155,7 @@ sid sysctl_net gen_context(system_u:object_r:unlabeled_t,s0) sid sysctl_net_unix gen_context(system_u:object_r:unlabeled_t,s0) sid sysctl_vm gen_context(system_u:object_r:unlabeled_t,s0) sid sysctl_dev gen_context(system_u:object_r:unlabeled_t,s0) -sid tcp_socket gen_context(system_u:object_r:unlabeled_t,s15:c0.c255) +sid tcp_socket gen_context(system_u:object_r:unlabeled_t,mls_systemhigh) ######################################## # diff --git a/policy/modules/kernel/mcs.te b/policy/modules/kernel/mcs.te index e75d5de..de146c1 100644 --- a/policy/modules/kernel/mcs.te +++ b/policy/modules/kernel/mcs.te @@ -9,44 +9,3 @@ policy_module(mcs,1.0.4) attribute mcskillall; attribute mcsptraceall; attribute mcssetcats; - -######################################## -# -# THIS IS A HACK -# -# Only the base module can have range_transitions, so we -# temporarily have to break encapsulation to work around this. -# - -type auditd_exec_t; -type crond_exec_t; -type cupsd_exec_t; -type getty_t; -type init_t; -type init_exec_t; -type initrc_t; -type initrc_exec_t; -type login_exec_t; -type sshd_exec_t; -type udev_exec_t; -type unconfined_t; -type xdm_exec_t; - -ifdef(`enable_mcs',` -# The eventual plan is to have a range_transition to s0 for the daemon by -# default and have the daemons which need to run with all categories be -# exceptions. But while range_transitions have to be in the base module -# this is not possible. -range_transition getty_t login_exec_t s0 - s0:c0.c255; -range_transition init_t xdm_exec_t s0 - s0:c0.c255; -range_transition initrc_t crond_exec_t s0 - s0:c0.c255; -range_transition initrc_t cupsd_exec_t s0 - s0:c0.c255; -range_transition initrc_t sshd_exec_t s0 - s0:c0.c255; -range_transition initrc_t udev_exec_t s0 - s0:c0.c255; -range_transition initrc_t setrans_exec_t s0 - s0:c0.c255; -range_transition initrc_t xdm_exec_t s0 - s0:c0.c255; -range_transition kernel_t udev_exec_t s0 - s0:c0.c255; - -# these might be targeted_policy only -range_transition unconfined_t initrc_exec_t s0; -') diff --git a/policy/modules/kernel/mls.te b/policy/modules/kernel/mls.te index 971d38e..791be1b 100644 --- a/policy/modules/kernel/mls.te +++ b/policy/modules/kernel/mls.te @@ -49,24 +49,3 @@ attribute mlsrangetrans; attribute mlsfduse; attribute mlsfdshare; - -######################################## -# -# THIS IS A HACK -# -# Only the base module can have range_transitions, so we -# temporarily have to break encapsulation to work around this. -# Other types are declared in the mcs module. -# - -type lvm_exec_t; -type run_init_t; -type setrans_exec_t; - -ifdef(`enable_mls',` -range_transition initrc_t auditd_exec_t s15:c0.c255; -range_transition kernel_t init_exec_t s0 - s15:c0.c255; -range_transition kernel_t lvm_exec_t s0 - s15:c0.c255; -range_transition initrc_t setrans_exec_t s15:c0.c255; -range_transition run_init_t initrc_exec_t s0 - s15:c0.c255; -') diff --git a/policy/modules/kernel/selinux.te b/policy/modules/kernel/selinux.te index d0e2750..9629a7f 100644 --- a/policy/modules/kernel/selinux.te +++ b/policy/modules/kernel/selinux.te @@ -19,7 +19,7 @@ attribute selinux_unconfined_type; type security_t; fs_type(security_t) mls_trusted_object(security_t) -sid security gen_context(system_u:object_r:security_t,s15:c0.c255) +sid security gen_context(system_u:object_r:security_t,mls_systemhigh) genfscon selinuxfs / gen_context(system_u:object_r:security_t,s0) neverallow ~{ selinux_unconfined_type can_load_policy } security_t:security load_policy; diff --git a/policy/modules/kernel/storage.fc b/policy/modules/kernel/storage.fc index 8d52958..ef219a5 100644 --- a/policy/modules/kernel/storage.fc +++ b/policy/modules/kernel/storage.fc @@ -5,36 +5,36 @@ /dev/n?osst[0-3].* -c gen_context(system_u:object_r:tape_device_t,s0) /dev/n?pt[0-9]+ -c gen_context(system_u:object_r:tape_device_t,s0) /dev/n?tpqic[12].* -c gen_context(system_u:object_r:tape_device_t,s0) -/dev/[shmx]d[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/[shmx]d[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/aztcd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/bpcd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/cdu.* -b gen_context(system_u:object_r:removable_device_t,s0) /dev/cm20.* -b gen_context(system_u:object_r:removable_device_t,s0) -/dev/dasd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/dm-[0-9]+ -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/dasd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/dm-[0-9]+ -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/fd[^/]+ -b gen_context(system_u:object_r:removable_device_t,s0) -/dev/flash[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/flash[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/gscd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/hitcd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/ht[0-1] -b gen_context(system_u:object_r:tape_device_t,s0) -/dev/initrd -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/jsfd -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/jsflash -c gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/loop.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/lvm -c gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/initrd -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/jsfd -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/jsflash -c gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/loop.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/lvm -c gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/mcdx? -b gen_context(system_u:object_r:removable_device_t,s0) /dev/mmcblk.* -b gen_context(system_u:object_r:removable_device_t,s0) -/dev/nb[^/]+ -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/nb[^/]+ -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/optcd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/p[fg][0-3] -b gen_context(system_u:object_r:removable_device_t,s0) /dev/pcd[0-3] -b gen_context(system_u:object_r:removable_device_t,s0) /dev/pd[a-d][^/]* -b gen_context(system_u:object_r:removable_device_t,s0) /dev/pg[0-3] -c gen_context(system_u:object_r:removable_device_t,s0) -/dev/ram.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/rawctl -c gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/rd.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/ram.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/rawctl -c gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/rd.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) ifdef(`distro_redhat', ` -/dev/root -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/root -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) ') /dev/s(cd|r)[^/]* -b gen_context(system_u:object_r:removable_device_t,s0) /dev/sbpcd.* -b gen_context(system_u:object_r:removable_device_t,s0) @@ -42,25 +42,25 @@ ifdef(`distro_redhat', ` /dev/sjcd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/sonycd -b gen_context(system_u:object_r:removable_device_t,s0) /dev/tape.* -c gen_context(system_u:object_r:tape_device_t,s0) -/dev/ub[a-z] -b gen_context(system_u:object_r:removable_device_t,s15:c0.c255) -/dev/ubd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) -/dev/xvd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/ub[a-z] -b gen_context(system_u:object_r:removable_device_t,mls_systemhigh) +/dev/ubd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/xvd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/ataraid/.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/ataraid/.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/cciss/[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/cciss/[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/floppy/[^/]* -b gen_context(system_u:object_r:removable_device_t,s0) -/dev/i2o/hd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/i2o/hd[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/ida/[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/ida/[^/]* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/md/.* -b gen_context(system_u:object_r:fixed_disk_device_t,s0) -/dev/mapper/.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/md/.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) +/dev/mapper/.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/raw/raw[0-9]+ -c gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/raw/raw[0-9]+ -c gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) -/dev/scramdisk/.* -b gen_context(system_u:object_r:fixed_disk_device_t,s15:c0.c255) +/dev/scramdisk/.* -b gen_context(system_u:object_r:fixed_disk_device_t,mls_systemhigh) /dev/usb/rio500 -c gen_context(system_u:object_r:removable_device_t,s0) diff --git a/policy/modules/kernel/terminal.fc b/policy/modules/kernel/terminal.fc index a39e999..6fafbd9 100644 --- a/policy/modules/kernel/terminal.fc +++ b/policy/modules/kernel/terminal.fc @@ -18,7 +18,7 @@ /dev/pty/.* -c gen_context(system_u:object_r:bsdpty_device_t,s0) -/dev/pts -d gen_context(system_u:object_r:devpts_t,s0-s15:c0.c255) +/dev/pts -d gen_context(system_u:object_r:devpts_t,s0-mls_systemhigh) /dev/tts/[^/]* -c gen_context(system_u:object_r:tty_device_t,s0) diff --git a/policy/modules/services/cron.te b/policy/modules/services/cron.te index 8812f7e..fe64b35 100644 --- a/policy/modules/services/cron.te +++ b/policy/modules/services/cron.te @@ -26,11 +26,7 @@ type cron_log_t; logging_log_file(cron_log_t) type crond_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type crond_exec_t; -') +type crond_exec_t; init_daemon_domain(crond_t,crond_exec_t) domain_interactive_fd(crond_t) domain_cron_exemption_source(crond_t) @@ -67,6 +63,10 @@ ifdef(`targeted_policy',` files_type(sysadm_cron_spool_t) ') +ifdef(`enable_mcs',` + init_ranged_daemon_domain(crond_t,crond_exec_t,s0 - mcs_systemhigh) +') + ######################################## # # Cron Local policy diff --git a/policy/modules/services/cups.te b/policy/modules/services/cups.te index e0c3284..947aab2 100644 --- a/policy/modules/services/cups.te +++ b/policy/modules/services/cups.te @@ -14,11 +14,7 @@ type cupsd_config_var_run_t; files_pid_file(cupsd_config_var_run_t) type cupsd_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type cupsd_exec_t; -') +type cupsd_exec_t; init_daemon_domain(cupsd_t,cupsd_exec_t) type cupsd_etc_t; @@ -68,6 +64,10 @@ files_config_file(ptal_etc_t) type ptal_var_run_t; files_pid_file(ptal_var_run_t) +ifdef(`enable_mcs',` + init_ranged_daemon_domain(cupsd_t,cupsd_exec_t,s0 - mcs_systemhigh) +') + ######################################## # # Cups local policy diff --git a/policy/modules/services/ssh.te b/policy/modules/services/ssh.te index e24bb9d..155d2e9 100644 --- a/policy/modules/services/ssh.te +++ b/policy/modules/services/ssh.te @@ -20,11 +20,7 @@ role system_r types ssh_keygen_t; type ssh_keysign_exec_t; corecmd_executable_file(ssh_keysign_exec_t) -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type sshd_exec_t; -') +type sshd_exec_t; corecmd_executable_file(sshd_exec_t) type sshd_key_t; @@ -36,6 +32,10 @@ ifdef(`targeted_policy',` type sshd_var_run_t; files_type(sshd_var_run_t) + + ifdef(`enable_mcs',` + init_ranged_system_domain(sshd_t,sshd_exec_t,s0 - mcs_systemhigh) + ') ',` # Type for the ssh-agent executable. type ssh_agent_exec_t; @@ -55,6 +55,10 @@ ifdef(`targeted_policy',` # These rules should match the else block # of the run_ssh_inetd tunable directly above init_daemon_domain(sshd_t,sshd_exec_t) + + ifdef(`enable_mcs',` + init_ranged_daemon_domain(sshd_t,sshd_exec_t,s0 - mcs_systemhigh) + ') # ') type sshd_tmp_t; diff --git a/policy/modules/services/xserver.te b/policy/modules/services/xserver.te index 9e92fc2..52cdc69 100644 --- a/policy/modules/services/xserver.te +++ b/policy/modules/services/xserver.te @@ -26,11 +26,7 @@ fs_associate_tmpfs(xconsole_device_t) files_associate_tmp(xconsole_device_t) type xdm_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type xdm_exec_t; -') +type xdm_exec_t; auth_login_pgm_domain(xdm_t) init_domain(xdm_t,xdm_exec_t) init_daemon_domain(xdm_t,xdm_exec_t) @@ -71,6 +67,11 @@ logging_log_file(xserver_log_t) xserver_common_domain_template(xdm) init_system_domain(xdm_xserver_t,xserver_exec_t) +ifdef(`enable_mcs',` + init_ranged_domain(xdm_t,xdm_exec_t,s0 - mcs_systemhigh) + init_ranged_daemon_domain(xdm_t,xdm_exec_t,s0 - mcs_systemhigh) +') + optional_policy(` prelink_object_file(xkb_var_lib_t) ') diff --git a/policy/modules/system/authlogin.if b/policy/modules/system/authlogin.if index bdcc29b..d57861b 100644 --- a/policy/modules/system/authlogin.if +++ b/policy/modules/system/authlogin.if @@ -282,6 +282,43 @@ interface(`auth_domtrans_login_program',` ######################################## ## +## Execute a login_program in the target domain, +## with a range transition. +## +## +## +## Domain allowed access. +## +## +## +## +## The type of the login_program process. +## +## +## +## +## Range of the login program. +## +## +# +interface(`auth_ranged_domtrans_login_program',` + gen_require(` + type login_exec_t; + ') + + auth_domtrans_login_program($1,$2) + + ifdef(`enable_mcs',` + range_transition $1 login_exec_t:process $3; + ') + + ifdef(`enable_mls',` + range_transition $1 login_exec_t:process $3; + ') +') + +######################################## +## ## Run unix_chkpwd to check a password. ## ## diff --git a/policy/modules/system/authlogin.te b/policy/modules/system/authlogin.te index bfa78ae..8599a85 100644 --- a/policy/modules/system/authlogin.te +++ b/policy/modules/system/authlogin.te @@ -11,7 +11,7 @@ attribute can_write_shadow_passwords; attribute can_relabelto_shadow_passwords; type chkpwd_exec_t; -files_type(chkpwd_exec_t) +corecmd_executable_file(chkpwd_exec_t) type faillog_t; logging_log_file(faillog_t) @@ -19,12 +19,8 @@ logging_log_file(faillog_t) type lastlog_t; logging_log_file(lastlog_t) -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type login_exec_t; -') -files_type(login_exec_t) +type login_exec_t; +corecmd_executable_file(login_exec_t) type pam_console_t; type pam_console_exec_t; diff --git a/policy/modules/system/getty.te b/policy/modules/system/getty.te index 8900a5b..7aad133 100644 --- a/policy/modules/system/getty.te +++ b/policy/modules/system/getty.te @@ -6,11 +6,7 @@ policy_module(getty,1.1.4) # Declarations # -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type getty_t; -') +type getty_t; type getty_exec_t; init_domain(getty_t,getty_exec_t) domain_interactive_fd(getty_t) diff --git a/policy/modules/system/init.if b/policy/modules/system/init.if index 22554b4..892cf02 100644 --- a/policy/modules/system/init.if +++ b/policy/modules/system/init.if @@ -44,6 +44,43 @@ interface(`init_domain',` ######################################## ## +## Create a domain which can be started by init, +## with a range transition. +## +## +## +## Type to be used as a domain. +## +## +## +## +## Type of the program to be used as an entry point to this domain. +## +## +## +## +## Range for the domain. +## +## +# +interface(`init_ranged_domain',` + gen_require(` + type init_t; + ') + + init_domain($1,$2) + + ifdef(`enable_mcs',` + range_transition init_t $2:process $3; + ') + + ifdef(`enable_mls',` + range_transition init_t $2:process $3; + ') +') + +######################################## +## ## Create a domain for long running processes ## (daemons) which can be started by init scripts. ## @@ -129,6 +166,43 @@ interface(`init_daemon_domain',` ######################################## ## +## Create a domain for long running processes +## (daemons) which can be started by init scripts. +## +## +## +## Type to be used as a domain. +## +## +## +## +## Type of the program to be used as an entry point to this domain. +## +## +## +## +## Range for the domain. +## +## +# +interface(`init_ranged_daemon_domain',` + gen_require(` + type initrc_t; + ') + + init_daemon_domain($1,$2) + + ifdef(`enable_mcs',` + range_transition initrc_t $2:process $3; + ') + + ifdef(`enable_mls',` + range_transition initrc_t $2:process $3; + ') +') + +######################################## +## ## Create a domain for short running processes ## which can be started by init scripts. ## @@ -172,6 +246,43 @@ interface(`init_system_domain',` ######################################## ## +## Create a domain for short running processes +## which can be started by init scripts. +## +## +## +## Type to be used as a domain. +## +## +## +## +## Type of the program to be used as an entry point to this domain. +## +## +## +## +## Range for the domain. +## +## +# +interface(`init_ranged_system_domain',` + gen_require(` + type initrc_t; + ') + + init_system_domain($1,$2) + + ifdef(`enable_mcs',` + range_transition initrc_t $2 $3; + ') + + ifdef(`enable_mls',` + range_transition initrc_t $2 $3; + ') +') + +######################################## +## ## Execute init (/sbin/init) with a domain transition. ## ## @@ -483,10 +594,17 @@ interface(`init_domtrans_script',` files_list_etc($1) domain_auto_trans($1,initrc_exec_t,initrc_t) - allow initrc_t $1:fd use; allow initrc_t $1:fifo_file rw_file_perms; allow initrc_t $1:process sigchld; + + ifdef(`enable_mcs',` + range_transition $1 initrc_exec_t:process s0; + ') + + ifdef(`enable_mls',` + range_transition $1 initrc_exec_t:process s0 - mls_systemhigh; + ') ') ######################################## diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te index 13ed5c9..f699558 100644 --- a/policy/modules/system/init.te +++ b/policy/modules/system/init.te @@ -22,26 +22,12 @@ attribute daemon; # # init_t is the domain of the init process. # -# real declaration moved to mls until -# range_transition works in loadable modules -# also remove the extra init_exec_t dependencies -# in init_t interfaces when the decl gets moved back here. -gen_require(` - type init_t; -') +type init_t; +type init_exec_t; domain_type(init_t) -role system_r types init_t; - -# -# init_exec_t is the type of the init program. -# -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type init_exec_t; -') -kernel_domtrans_to(init_t,init_exec_t) domain_entry_file(init_t,init_exec_t) +kernel_domtrans_to(init_t,init_exec_t) +role system_r types init_t; # # init_var_run_t is the type for /var/run/shutdown.pid. @@ -58,20 +44,11 @@ type initctl_t; files_type(initctl_t) mls_trusted_object(initctl_t) -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type initrc_t; -') +type initrc_t; +type initrc_exec_t; domain_type(initrc_t) -role system_r types initrc_t; - -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type initrc_exec_t; -') domain_entry_file(initrc_t,initrc_exec_t) +role system_r types initrc_t; type initrc_devpts_t; term_pty(initrc_devpts_t) @@ -86,6 +63,10 @@ files_tmp_file(initrc_tmp_t) type initrc_var_run_t; files_pid_file(initrc_var_run_t) +ifdef(`enable_mls',` + kernel_ranged_domtrans_to(init_t,init_exec_t,s0 - mls_systemhigh) +') + ######################################## # # Init local policy diff --git a/policy/modules/system/locallogin.if b/policy/modules/system/locallogin.if index 801aa12..364451c 100644 --- a/policy/modules/system/locallogin.if +++ b/policy/modules/system/locallogin.if @@ -16,6 +16,10 @@ interface(`locallogin_domtrans',` ') auth_domtrans_login_program($1,local_login_t) + + ifdef(`enable_mcs',` + auth_ranged_domtrans_login_program($1,local_login_t,s0 - mcs_systemhigh) + ') ') ######################################## diff --git a/policy/modules/system/logging.fc b/policy/modules/system/logging.fc index 6730fd2..2d999fd 100644 --- a/policy/modules/system/logging.fc +++ b/policy/modules/system/logging.fc @@ -1,7 +1,7 @@ /dev/log -s gen_context(system_u:object_r:devlog_t,s0) -/etc/audit(/.*)? gen_context(system_u:object_r:auditd_etc_t,s15:c0.c255) +/etc/audit(/.*)? gen_context(system_u:object_r:auditd_etc_t,mls_systemhigh) /sbin/auditctl -- gen_context(system_u:object_r:auditctl_exec_t,s0) /sbin/auditd -- gen_context(system_u:object_r:auditd_exec_t,s0) @@ -24,11 +24,11 @@ ifdef(`distro_suse', ` /var/axfrdns/log/main(/.*)? gen_context(system_u:object_r:var_log_t,s0) /var/dnscache/log/main(/.*)? gen_context(system_u:object_r:var_log_t,s0) -/var/log -d gen_context(system_u:object_r:var_log_t,s0-s15:c0.c255) +/var/log -d gen_context(system_u:object_r:var_log_t,s0-mls_systemhigh) /var/log/.* gen_context(system_u:object_r:var_log_t,s0) -/var/log/audit\.log -- gen_context(system_u:object_r:auditd_log_t,s15:c0.c255) +/var/log/audit\.log -- gen_context(system_u:object_r:auditd_log_t,mls_systemhigh) -/var/log/audit(/.*)? gen_context(system_u:object_r:auditd_log_t,s15:c0.c255) +/var/log/audit(/.*)? gen_context(system_u:object_r:auditd_log_t,mls_systemhigh) /var/run/audit_events -s gen_context(system_u:object_r:auditd_var_run_t,s0) /var/run/auditd\.pid -- gen_context(system_u:object_r:auditd_var_run_t,s0) diff --git a/policy/modules/system/logging.te b/policy/modules/system/logging.te index 836b25c..27bcc91 100644 --- a/policy/modules/system/logging.te +++ b/policy/modules/system/logging.te @@ -21,11 +21,7 @@ files_security_file(auditd_log_t) files_mountpoint(auditd_log_t) type auditd_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type auditd_exec_t; -') +type auditd_exec_t; init_daemon_domain(auditd_t,auditd_exec_t) type auditd_var_run_t; @@ -58,6 +54,10 @@ files_pid_file(syslogd_var_run_t) type var_log_t; logging_log_file(var_log_t) +ifdef(`enable_mls',` + init_ranged_daemon_domain(auditd_t,auditd_exec_t,mls_systemhigh) +') + ######################################## # # Auditd local policy diff --git a/policy/modules/system/lvm.te b/policy/modules/system/lvm.te index 114e1d8..ea5e36e 100644 --- a/policy/modules/system/lvm.te +++ b/policy/modules/system/lvm.te @@ -14,11 +14,7 @@ type clvmd_var_run_t; files_pid_file(clvmd_var_run_t) type lvm_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type lvm_exec_t; -') +type lvm_exec_t; init_system_domain(lvm_t,lvm_exec_t) # needs privowner because it assigns the identity system_u to device nodes # but runs as the identity of the sysadmin diff --git a/policy/modules/system/selinuxutil.fc b/policy/modules/system/selinuxutil.fc index 2e6f4c7..8cb0707 100644 --- a/policy/modules/system/selinuxutil.fc +++ b/policy/modules/system/selinuxutil.fc @@ -6,12 +6,12 @@ /etc/selinux(/.*)? gen_context(system_u:object_r:selinux_config_t,s0) /etc/selinux/([^/]*/)?contexts(/.*)? gen_context(system_u:object_r:default_context_t,s0) /etc/selinux/([^/]*/)?contexts/files(/.*)? gen_context(system_u:object_r:file_context_t,s0) -/etc/selinux/([^/]*/)?policy(/.*)? gen_context(system_u:object_r:policy_config_t,s15:c0.c255) -/etc/selinux/([^/]*/)?seusers -- gen_context(system_u:object_r:selinux_config_t,s15:c0.c255) +/etc/selinux/([^/]*/)?policy(/.*)? gen_context(system_u:object_r:policy_config_t,mls_systemhigh) +/etc/selinux/([^/]*/)?seusers -- gen_context(system_u:object_r:selinux_config_t,mls_systemhigh) /etc/selinux/([^/]*/)?modules/(active|tmp|previous)(/.*)? gen_context(system_u:object_r:semanage_store_t,s0) /etc/selinux/([^/]*/)?modules/semanage\.read\.LOCK -- gen_context(system_u:object_r:semanage_read_lock_t,s0) /etc/selinux/([^/]*/)?modules/semanage\.trans\.LOCK -- gen_context(system_u:object_r:semanage_trans_lock_t,s0) -/etc/selinux/([^/]*/)?users(/.*)? -- gen_context(system_u:object_r:selinux_config_t,s15:c0.c255) +/etc/selinux/([^/]*/)?users(/.*)? -- gen_context(system_u:object_r:selinux_config_t,mls_systemhigh) # # /root diff --git a/policy/modules/system/selinuxutil.te b/policy/modules/system/selinuxutil.te index ba03328..601ad2e 100644 --- a/policy/modules/system/selinuxutil.te +++ b/policy/modules/system/selinuxutil.te @@ -94,11 +94,7 @@ role system_r types restorecond_t; type restorecond_var_run_t; files_pid_file(restorecond_var_run_t) -# real declaration moved to mls until -# range transitions work in modules -gen_require(` - type run_init_t; -') +type run_init_t; type run_init_exec_t; domain_type(run_init_t) domain_entry_file(run_init_t,run_init_exec_t) diff --git a/policy/modules/system/setrans.fc b/policy/modules/system/setrans.fc index 71c374f..1cc3d19 100644 --- a/policy/modules/system/setrans.fc +++ b/policy/modules/system/setrans.fc @@ -1,3 +1,3 @@ /sbin/mcstransd -- gen_context(system_u:object_r:setrans_exec_t,s0) -/var/run/setrans(/.*)? gen_context(system_u:object_r:setrans_var_run_t,s15:c0.c255) +/var/run/setrans(/.*)? gen_context(system_u:object_r:setrans_var_run_t,mls_systemhigh) diff --git a/policy/modules/system/setrans.te b/policy/modules/system/setrans.te index a42a0de..f742082 100644 --- a/policy/modules/system/setrans.te +++ b/policy/modules/system/setrans.te @@ -7,17 +7,21 @@ policy_module(setrans,1.0.3) # type setrans_t; -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type setrans_exec_t; -') +type setrans_exec_t; init_daemon_domain(setrans_t, setrans_exec_t) type setrans_var_run_t; files_pid_file(setrans_var_run_t) mls_trusted_object(setrans_var_run_t) +ifdef(`enable_mcs',` + init_ranged_daemon_domain(setrans_t, setrans_exec_t,s0 - mcs_systemhigh) +') + +ifdef(`enable_mls',` + init_ranged_daemon_domain(setrans_t, setrans_exec_t,mls_systemhigh) +') + ######################################## # # setrans local policy diff --git a/policy/modules/system/udev.te b/policy/modules/system/udev.te index 591e191..9e7edf5 100644 --- a/policy/modules/system/udev.te +++ b/policy/modules/system/udev.te @@ -6,13 +6,8 @@ policy_module(udev,1.3.6) # Declarations # -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type udev_exec_t; -') - type udev_t; +type udev_exec_t; type udev_helper_exec_t; kernel_domtrans_to(udev_t,udev_exec_t) domain_obj_id_change_exemption(udev_t) @@ -34,6 +29,11 @@ files_type(udev_tbl_t) type udev_var_run_t; files_pid_file(udev_var_run_t) +ifdef(`enable_mcs',` + kernel_ranged_domtrans_to(udev_t,udev_exec_t,s0 - mcs_systemhigh) + init_ranged_daemon_domain(udev_t,udev_exec_t,s0 - mcs_systemhigh) +') + ######################################## # # Local policy diff --git a/policy/modules/system/unconfined.te b/policy/modules/system/unconfined.te index 0e4271f..74f6c1b 100644 --- a/policy/modules/system/unconfined.te +++ b/policy/modules/system/unconfined.te @@ -6,11 +6,7 @@ policy_module(unconfined,1.3.15) # Declarations # -# real declaration moved to mls until -# range_transition works in loadable modules -gen_require(` - type unconfined_t; -') +type unconfined_t; type unconfined_exec_t; init_system_domain(unconfined_t,unconfined_exec_t) diff --git a/policy/modules/system/userdomain.fc b/policy/modules/system/userdomain.fc index 177b096..a7146d8 100644 --- a/policy/modules/system/userdomain.fc +++ b/policy/modules/system/userdomain.fc @@ -1,5 +1,5 @@ ifdef(`strict_policy',` -HOME_DIR -d gen_context(system_u:object_r:ROLE_home_dir_t,s0-s15:c0.c255) +HOME_DIR -d gen_context(system_u:object_r:ROLE_home_dir_t,s0-mls_systemhigh) HOME_DIR/.+ gen_context(system_u:object_r:ROLE_home_t,s0) /tmp/gconfd-USER -d gen_context(system_u:object_r:ROLE_tmp_t,s0) diff --git a/policy/support/loadable_module.spt b/policy/support/loadable_module.spt index 9970be4..1719673 100644 --- a/policy/support/loadable_module.spt +++ b/policy/support/loadable_module.spt @@ -15,6 +15,16 @@ define(`policy_module',` require { role system_r; all_kernel_class_perms + + ifdef(`enable_mcs',` + sensitivity s0; + category c0, c`'decr(mcs_num_cats); + ') + + ifdef(`enable_mls',` + sensitivity s0, s`'decr(mls_num_sens); + category c0, c`'decr(mls_num_cats); + ') } ') ') diff --git a/policy/support/misc_macros.spt b/policy/support/misc_macros.spt index 94e209f..e6924e6 100644 --- a/policy/support/misc_macros.spt +++ b/policy/support/misc_macros.spt @@ -76,16 +76,3 @@ define(`can_exec',`allow $1 $2:file { rx_file_perms execute_no_trans };') define(`gen_bool',` bool $1 dflt_or_overr(`$1'_conf,$2); ') - -######################################## -# -# gen_cats(N) -# -# declares categores c0 to c(N-1) -# -define(`decl_cats',`dnl -category c$1; -ifelse(`$1',`$2',,`decl_cats(incr($1),$2)')dnl -') - -define(`gen_cats',`decl_cats(0,decr($1))') diff --git a/policy/support/mls_mcs_macros.spt b/policy/support/mls_mcs_macros.spt new file mode 100644 index 0000000..7593e20 --- /dev/null +++ b/policy/support/mls_mcs_macros.spt @@ -0,0 +1,57 @@ +######################################## +# +# gen_cats(N) +# +# declares categores c0 to c(N-1) +# +define(`decl_cats',`dnl +category c$1; +ifelse(`$1',`$2',,`decl_cats(incr($1),$2)')dnl +') + +define(`gen_cats',`decl_cats(0,decr($1))') + +######################################## +# +# gen_sens(N) +# +# declares sensitivites s0 to s(N-1) with dominance +# in increasing numeric order with s0 lowest, s(N-1) highest +# +define(`decl_sens',`dnl +sensitivity s$1; +ifelse(`$1',`$2',,`decl_sens(incr($1),$2)')dnl +') + +define(`gen_dominance',`s$1 ifelse(`$1',`$2',,`gen_dominance(incr($1),$2)')') + +define(`gen_sens',` +# Each sensitivity has a name and zero or more aliases. +decl_sens(0,decr($1)) + +# Define the ordering of the sensitivity levels (least to greatest) +dominance { gen_dominance(0,decr($1)) } +') + +######################################## +# +# gen_levels(N,M) +# +# levels from s0 to (N-1) with categories c0 to (M-1) +# +define(`decl_levels',`dnl +level s$1:c0.c$3; +ifelse(`$1',`$2',,`decl_levels(incr($1),$2,$3)')dnl +') + +define(`gen_levels',`decl_levels(0,decr($1),decr($2))') + +######################################## +# +# Basic level names for system low and high +# +define(`mls_systemlow',`s0') +define(`mls_systemhigh',`s`'decr(mls_num_sens):c0.c`'decr(mls_num_cats)') +define(`mcs_systemlow',`s0') +define(`mcs_systemhigh',`s0:c0.c`'decr(mcs_num_cats)') +define(`mcs_allcats',`c0.c`'decr(mcs_num_cats)') diff --git a/policy/users b/policy/users index fecd3c3..e2053ab 100644 --- a/policy/users +++ b/policy/users @@ -16,7 +16,7 @@ # and a user process should never be assigned the system user # identity. # -gen_user(system_u,, system_r, s0, s0 - s15:c0.c255, c0.c255) +gen_user(system_u,, system_r, s0, s0 - mls_systemhigh, mcs_allcats) # # user_u is a generic user identity for Linux users who have no @@ -26,11 +26,11 @@ gen_user(system_u,, system_r, s0, s0 - s15:c0.c255, c0.c255) # permit any access to such users, then remove this entry. # ifdef(`targeted_policy',` -gen_user(user_u, user, user_r sysadm_r system_r, s0, s0 - s15:c0.c255, c0.c255) +gen_user(user_u, user, user_r sysadm_r system_r, s0, s0 - mls_systemhigh, mcs_allcats) ',` gen_user(user_u, user, user_r, s0, s0) -gen_user(staff_u, staff, staff_r sysadm_r ifdef(`enable_mls',`secadm_r auditadm_r'), s0, s0 - s15:c0.c255, c0.c255) -gen_user(sysadm_u, sysadm, sysadm_r, s0, s0 - s15:c0.c255, c0.c255) +gen_user(staff_u, staff, staff_r sysadm_r ifdef(`enable_mls',`secadm_r auditadm_r'), s0, s0 - mls_systemhigh, mcs_allcats) +gen_user(sysadm_u, sysadm, sysadm_r, s0, s0 - mls_systemhigh, mcs_allcats) ') # @@ -41,11 +41,11 @@ gen_user(sysadm_u, sysadm, sysadm_r, s0, s0 - s15:c0.c255, c0.c255) # not in the sysadm_r. # ifdef(`targeted_policy',` - gen_user(root, user, user_r sysadm_r system_r, s0, s0 - s15:c0.c255, c0.c255) + gen_user(root, user, user_r sysadm_r system_r, s0, s0 - mls_systemhigh, mcs_allcats) ',` ifdef(`direct_sysadm_daemon',` - gen_user(root, sysadm, sysadm_r staff_r ifdef(`enable_mls',`secadm_r auditadm_r') system_r, s0, s0 - s15:c0.c255, c0.c255) + gen_user(root, sysadm, sysadm_r staff_r ifdef(`enable_mls',`secadm_r auditadm_r') system_r, s0, s0 - mls_systemhigh, mcs_allcats) ',` - gen_user(root, sysadm, sysadm_r staff_r ifdef(`enable_mls',`secadm_r auditadm_r'), s0, s0 - s15:c0.c255, c0.c255) + gen_user(root, sysadm, sysadm_r staff_r ifdef(`enable_mls',`secadm_r auditadm_r'), s0, s0 - mls_systemhigh, mcs_allcats) ') ') diff --git a/support/Makefile.devel b/support/Makefile.devel index 38664f9..57fec44 100644 --- a/support/Makefile.devel +++ b/support/Makefile.devel @@ -76,11 +76,16 @@ ifeq ($(DIRECT_INITRC),y) M4PARAM += -D direct_sysadm_daemon endif +# default MLS/MCS sensitivity and category settings. +MLS_SENS ?= 16 +MLS_CATS ?= 256 +MCS_CATS ?= 256 + ifeq ($(QUIET),y) verbose := @ endif -M4PARAM += -D hide_broken_symptoms +M4PARAM += -D hide_broken_symptoms -D mls_num_sens=$(MLS_SENS) -D mls_num_cats=$(MLS_CATS) -D mcs_num_cats=$(MCS_CATS) # policy headers m4support = $(wildcard $(HEADERDIR)/support/*.spt)