trusty_apploader: log to stderr
Print an error message to stderr on connection failure, so that the
command doesn't exit silently in case of the common user error of
forgetting to run it as root.
Bug: None
Test: Run as regular user, see "permission denied" message.
Change-Id: Ia213dedccab27e6152b5eb969fbee06d82d3d4ff
diff --git a/trusty/apploader/apploader.cpp b/trusty/apploader/apploader.cpp
index e4d9b39..c72af40 100644
--- a/trusty/apploader/apploader.cpp
+++ b/trusty/apploader/apploader.cpp
@@ -245,6 +245,8 @@
tipc_fd = tipc_connect(dev_name, APPLOADER_PORT);
if (tipc_fd < 0) {
LOG(ERROR) << "Failed to connect to Trusty app loader: " << strerror(-tipc_fd);
+ // print this to stderr too to avoid silently exiting when run as non-root
+ fprintf(stderr, "Failed to connect to Trusty app loader: %s\n", strerror(-tipc_fd));
rc = tipc_fd;
goto err_tipc_connect;
}