Support for ocontexts per device.

ocontexts was split up into 4 files:
1.fs_use
2.genfs_contexts
3.initial_sid_contexts
4.port_contexts

Each file has their respective declerations in them.
Devices, in their respective device directory, can now specify sepolicy.fs_use, sepolicy.genfs_contexts, sepolicy.port_contexts, and sepolicy.initial_sid_contexts. These declerations will be added right behind their respective sepolicy counterparts in the concatenated configuration file.

Android.mk

@@ -16,6 +16,10 @@ LOCAL_POLICY_DIRS := $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/ device/*/$(TARGET
 LOCAL_POLICY_FC := $(wildcard $(addsuffix sepolicy.fc, $(LOCAL_POLICY_DIRS)))
 LOCAL_POLICY_TE := $(wildcard $(addsuffix sepolicy.te, $(LOCAL_POLICY_DIRS)))
 LOCAL_POLICY_PC := $(wildcard $(addsuffix sepolicy.pc, $(LOCAL_POLICY_DIRS)))
+LOCAL_POLICY_FS_USE := $(wildcard $(addsuffix sepolicy.fs_use, $(LOCAL_POLICY_DIRS)))
+LOCAL_POLICY_PORT_CONTEXTS := $(wildcard $(addsuffix sepolicy.port_contexts, $(LOCAL_POLICY_DIRS)))
+LOCAL_POLICY_GENFS_CONTEXTS := $(wildcard $(addsuffix sepolicy.genfs_contexts, $(LOCAL_POLICY_DIRS)))
+LOCAL_POLICY_INITIAL_SID_CONTEXTS := $(wildcard $(addsuffix sepolicy.initial_sid_contexts, $(LOCAL_POLICY_DIRS)))
 
 ##################################
 include $(CLEAR_VARS)
@@ -31,7 +35,7 @@ include $(BUILD_SYSTEM)/base_rules.mk
 sepolicy_policy.conf := $(intermediates)/policy.conf
 $(sepolicy_policy.conf): PRIVATE_MLS_SENS := $(MLS_SENS)
 $(sepolicy_policy.conf): PRIVATE_MLS_CATS := $(MLS_CATS)
-$(sepolicy_policy.conf) : $(wildcard $(addprefix $(LOCAL_PATH)/,security_classes initial_sids access_vectors global_macros mls_macros mls policy_capabilities te_macros attributes *.te) $(LOCAL_POLICY_TE) $(addprefix $(LOCAL_PATH)/, roles users ocontexts))
+$(sepolicy_policy.conf) : $(wildcard $(addprefix $(LOCAL_PATH)/,security_classes initial_sids access_vectors global_macros mls_macros mls policy_capabilities te_macros attributes *.te) $(LOCAL_POLICY_TE) $(addprefix $(LOCAL_PATH)/, roles users initial_sid_contexts) $(LOCAL_POLICY_INITIAL_SID_CONTEXTS) $(addprefix $(LOCAL_PATH)/,fs_use) $(LOCAL_POLICY_FS_USE) $(addprefix $(LOCAL_PATH)/,genfs_contexts) $(LOCAL_POLICY_GENFS_CONTEXTS) $(addprefix $(LOCAL_PATH)/,port_contexts) $(LOCAL_POLICY_PORT_CONTEXTS))
 	@mkdir -p $(dir $@)
 	$(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) -s $^ > $@
 

fs_use

+# Label inodes via getxattr.
+fs_use_xattr yaffs2 u:object_r:labeledfs:s0;
+fs_use_xattr jffs2 u:object_r:labeledfs:s0;
+fs_use_xattr ext2 u:object_r:labeledfs:s0;
+fs_use_xattr ext3 u:object_r:labeledfs:s0;
+fs_use_xattr ext4 u:object_r:labeledfs:s0;
+fs_use_xattr xfs u:object_r:labeledfs:s0;
+fs_use_xattr btrfs u:object_r:labeledfs:s0;
+
+# Label inodes from task label.
+fs_use_task pipefs u:object_r:pipefs:s0;
+fs_use_task sockfs u:object_r:sockfs:s0;
+
+# Label inodes from combination of task label and fs label.
+# Define type_transition rules if you want per-domain types.
+fs_use_trans devpts u:object_r:devpts:s0;
+fs_use_trans tmpfs u:object_r:tmpfs:s0;
+fs_use_trans devtmpfs u:object_r:device:s0;
+fs_use_trans shm u:object_r:shm:s0;
+fs_use_trans mqueue u:object_r:mqueue:s0;
+

genfs_contexts

+# Label inodes with the fs label.
+genfscon rootfs / u:object_r:rootfs:s0
+# proc labeling can be further refined (longest matching prefix).
+genfscon proc / u:object_r:proc:s0
+genfscon proc /net/xt_qtaguid/ctrl u:object_r:qtaguid:s0
+# selinuxfs booleans can be individually labeled.
+genfscon selinuxfs / u:object_r:selinuxfs:s0
+genfscon cgroup / u:object_r:cgroup:s0
+# sysfs labels can be set by userspace.
+genfscon sysfs / u:object_r:sysfs:s0
+genfscon inotifyfs / u:object_r:inotify:s0
+genfscon vfat / u:object_r:sdcard:s0
+genfscon debugfs / u:object_r:debugfs:s0
+genfscon fuse / u:object_r:sdcard:s0

ocontexts → initial_sid_contexts

@@ -24,46 +24,4 @@ sid sysctl_dev u:object_r:unlabeled:s0
 sid kmod u:object_r:unlabeled:s0
 sid policy u:object_r:unlabeled:s0
 sid scmp_packet u:object_r:unlabeled:s0
-sid devnull u:object_r:null_device:s0
 
-# Label inodes via getxattr.
-fs_use_xattr yaffs2 u:object_r:labeledfs:s0;
-fs_use_xattr jffs2 u:object_r:labeledfs:s0;
-fs_use_xattr ext2 u:object_r:labeledfs:s0;
-fs_use_xattr ext3 u:object_r:labeledfs:s0;
-fs_use_xattr ext4 u:object_r:labeledfs:s0;
-fs_use_xattr xfs u:object_r:labeledfs:s0;
-fs_use_xattr btrfs u:object_r:labeledfs:s0;
-
-# Label inodes from task label.
-fs_use_task pipefs u:object_r:pipefs:s0;
-fs_use_task sockfs u:object_r:sockfs:s0;
-
-# Label inodes from combination of task label and fs label.
-# Define type_transition rules if you want per-domain types.
-fs_use_trans devpts u:object_r:devpts:s0;
-fs_use_trans tmpfs u:object_r:tmpfs:s0;
-fs_use_trans devtmpfs u:object_r:device:s0;
-fs_use_trans shm u:object_r:shm:s0;
-fs_use_trans mqueue u:object_r:mqueue:s0;
-
-# Label inodes with the fs label.
-genfscon rootfs / u:object_r:rootfs:s0
-# proc labeling can be further refined (longest matching prefix).
-genfscon proc / u:object_r:proc:s0
-genfscon proc /net/xt_qtaguid/ctrl u:object_r:qtaguid:s0
-# These proc entries are for the CSR GPS chip
-# XXX Can we label these as device specific?
-genfscon proc /mcspi1_cs3_ctrl u:object_r:gps_control:s0
-# selinuxfs booleans can be individually labeled.
-genfscon selinuxfs / u:object_r:selinuxfs:s0
-genfscon cgroup / u:object_r:cgroup:s0
-# sysfs labels can be set by userspace.
-genfscon sysfs / u:object_r:sysfs:s0
-genfscon inotifyfs / u:object_r:inotify:s0
-genfscon vfat / u:object_r:sdcard:s0
-genfscon debugfs / u:object_r:debugfs:s0
-genfscon fuse / u:object_r:sdcard:s0
-
-# portcon statements go here, e.g.
-# portcon tcp 80 u:object_r:http_port:s0

port_contexts

+# portcon statements go here, e.g.
+# portcon tcp 80 u:object_r:http_port:s0
+