Introduce load_exports action.
The action reads a file with individual `export` actions declared on
each line, and calls `setenv` for each.
See go/updatable-classpath for details on how this is going to be used.
Bug: 180105615
Test: manual
Change-Id: I5390e52cf8ffd9c3babf31ed854eeecc727351eb
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 6b7d1e9..dcc9582 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -292,6 +292,38 @@
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 @@
{"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}}},