init: use platform sepolicy version indicated by /vendor.
am: 692c3e4d38
Change-Id: I81874aea3896c1156295616f12c211e9423d5ca7
diff --git a/init/init.cpp b/init/init.cpp
index 033336c..8b74da0 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -740,6 +740,18 @@
return true;
}
+static bool selinux_get_vendor_mapping_version(std::string* plat_vers) {
+ if (!read_first_line("/vendor/etc/selinux/plat_sepolicy_vers.txt", plat_vers)) {
+ PLOG(ERROR) << "Failed to read /vendor/etc/selinux/plat_sepolicy_vers.txt";
+ return false;
+ }
+ if (plat_vers->empty()) {
+ LOG(ERROR) << "No version present in plat_sepolicy_vers.txt";
+ return false;
+ }
+ return true;
+}
+
static constexpr const char plat_policy_cil_file[] = "/system/etc/selinux/plat_sepolicy.cil";
static bool selinux_is_split_policy_device() { return access(plat_policy_cil_file, R_OK) != -1; }
@@ -794,6 +806,12 @@
return false;
}
+ // Determine which mapping file to include
+ std::string vend_plat_vers;
+ if (!selinux_get_vendor_mapping_version(&vend_plat_vers)) {
+ return false;
+ }
+ std::string mapping_file("/system/etc/selinux/mapping/" + vend_plat_vers + ".cil");
// clang-format off
const char* compile_args[] = {
"/system/bin/secilc",
@@ -801,7 +819,7 @@
"-M", "true",
// Target the highest policy language version supported by the kernel
"-c", std::to_string(max_policy_version).c_str(),
- "/system/etc/selinux/mapping_sepolicy.cil",
+ mapping_file.c_str(),
"/vendor/etc/selinux/nonplat_sepolicy.cil",
"-o", compiled_sepolicy,
// We don't care about file_contexts output by the compiler