Merge "Introduce load_exports action." (7f9fabad) · Commits · e / os / android_system_core

init/README.md

+5 −0

Original line number	Diff line number	Diff line
		@@ -523,6 +523,11 @@ instance. \
		`interface_start aidl/aidl_lazy_test_1` will start the AIDL service that
		provides the `aidl_lazy_test_1` interface.

		`load_exports <path>`
		> Open the file at _path_ and export global environment variables declared
		there. Each line must be in the format `export <name> <value>`, as described
		above.

		`load_system_props`
		> (This action is deprecated and no-op.)

init/builtins.cpp

+33 −0

Original line number	Diff line number	Diff line
		@@ -292,6 +292,38 @@ static Result<void> do_export(const BuiltinArguments& args) {
		return {};
		}

		static Result<void> do_load_exports(const BuiltinArguments& args) {
		auto file_contents = ReadFile(args[1]);
		if (!file_contents.ok()) {
		return Error() << "Could not read input file '" << args[1]
		<< "': " << file_contents.error();
		}

		auto lines = Split(*file_contents, "\n");
		for (const auto& line : lines) {
		if (line.empty()) {
		continue;
		}

		auto env = Split(line, " ");

		if (env.size() != 3) {
		return ErrnoError() << "Expected a line as `export <name> <value>`, found: `" << line
		<< "`";
		}

		if (env[0] != "export") {
		return ErrnoError() << "Unknown action: '" << env[0] << "', expected 'export'";
		}

		if (setenv(env[1].c_str(), env[2].c_str(), 1) == -1) {
		return ErrnoError() << "Failed to export '" << line << "' from " << args[1];
		}
		}

		return {};
		}

		static Result<void> do_hostname(const BuiltinArguments& args) {
		if (auto result = WriteFile("/proc/sys/kernel/hostname", args[1]); !result.ok()) {
		return Error() << "Unable to write to /proc/sys/kernel/hostname: " << result.error();
		@@ -1404,6 +1436,7 @@ const BuiltinFunctionMap& GetBuiltinFunctionMap() {
		{"interface_restart", {1, 1, {false, do_interface_restart}}},
		{"interface_start", {1, 1, {false, do_interface_start}}},
		{"interface_stop", {1, 1, {false, do_interface_stop}}},
		{"load_exports", {1, 1, {false, do_load_exports}}},
		{"load_persist_props", {0, 0, {false, do_load_persist_props}}},
		{"load_system_props", {0, 0, {false, do_load_system_props}}},
		{"loglevel", {1, 1, {false, do_loglevel}}},