Allow redirecting log to console
If $RAVENWOOD_LOG_OUT is set, redirect stdin/stdout to this file.
Example usage: RAVENWOOD_LOG_OUT=$(tty) atest RavenwoodBivalentTest
Flag: EXEMPT host test change only
Bug: 292141694
Test: RAVENWOOD_LOG_OUT=$(tty) RAVENWOOD_VERBOSE=1 atest RavenwoodBivalentTest
Change-Id: I49e4c6b8a2bd7c39dbb15ade3a2ad6303accb3db
diff --git a/ravenwood/runtime-jni/ravenwood_runtime.cpp b/ravenwood/runtime-jni/ravenwood_runtime.cpp
index 3ff0848..2a3c26e 100644
--- a/ravenwood/runtime-jni/ravenwood_runtime.cpp
+++ b/ravenwood/runtime-jni/ravenwood_runtime.cpp
@@ -173,6 +173,24 @@
throwIfMinusOne(env, "setenv", setenv(name.c_str(), value.c_str(), overwrite ? 1 : 0));
}
+static void maybeRedirectLog() {
+ auto ravenwoodLogOut = getenv("RAVENWOOD_LOG_OUT");
+ if (ravenwoodLogOut == NULL) {
+ return;
+ }
+ ALOGI("RAVENWOOD_LOG_OUT set. Redirecting output to %s", ravenwoodLogOut);
+
+ // Redirect stdin / stdout to /dev/tty.
+ int ttyFd = open(ravenwoodLogOut, O_WRONLY);
+ if (ttyFd == -1) {
+ ALOGW("$RAVENWOOD_LOG_OUT is set to %s, but failed to open: %s ", ravenwoodLogOut,
+ strerror(errno));
+ return;
+ }
+ dup2(ttyFd, 1);
+ dup2(ttyFd, 2);
+}
+
// ---- Registration ----
extern void register_android_system_OsConstants(JNIEnv* env);
@@ -192,6 +210,8 @@
};
extern "C" jint JNI_OnLoad(JavaVM* vm, void* /* reserved */) {
+ maybeRedirectLog();
+
ALOGI("%s: JNI_OnLoad", __FILE__);
JNIEnv* env = GetJNIEnvOrDie(vm);