liblog: convert to C++
Bug: 119867234
Test: liblog, logcat, logd unit tests
Change-Id: I2a33b6fc37f9860c0041e3573bfb59ea389f623c
diff --git a/liblog/fake_writer.cpp b/liblog/fake_writer.cpp
new file mode 100644
index 0000000..46d171b
--- /dev/null
+++ b/liblog/fake_writer.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2007-2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <log/log.h>
+
+#include "config_write.h"
+#include "fake_log_device.h"
+#include "log_portability.h"
+#include "logger.h"
+
+static int fakeOpen();
+static void fakeClose();
+static int fakeWrite(log_id_t log_id, struct timespec* ts, struct iovec* vec, size_t nr);
+
+static int logFds[(int)LOG_ID_MAX] = {-1, -1, -1, -1, -1, -1};
+
+LIBLOG_HIDDEN struct android_log_transport_write fakeLoggerWrite = {
+ .node = {&fakeLoggerWrite.node, &fakeLoggerWrite.node},
+ .context.priv = &logFds,
+ .name = "fake",
+ .available = NULL,
+ .open = fakeOpen,
+ .close = fakeClose,
+ .write = fakeWrite,
+};
+
+static int fakeOpen() {
+ int i;
+
+ for (i = 0; i < LOG_ID_MAX; i++) {
+ /*
+ * Known maximum size string, plus an 8 character margin to deal with
+ * possible independent changes to android_log_id_to_name().
+ */
+ char buf[sizeof("/dev/log_security") + 8];
+ if (logFds[i] >= 0) {
+ continue;
+ }
+ snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(static_cast<log_id_t>(i)));
+ logFds[i] = fakeLogOpen(buf);
+ if (logFds[i] < 0) {
+ fprintf(stderr, "fakeLogOpen(%s) failed\n", buf);
+ }
+ }
+ return 0;
+}
+
+static void fakeClose() {
+ int i;
+
+ for (i = 0; i < LOG_ID_MAX; i++) {
+ fakeLogClose(logFds[i]);
+ logFds[i] = -1;
+ }
+}
+
+static int fakeWrite(log_id_t log_id, struct timespec*, struct iovec* vec, size_t nr) {
+ ssize_t ret;
+ size_t i;
+ int logFd, len;
+
+ if (/*(int)log_id >= 0 &&*/ (int)log_id >= (int)LOG_ID_MAX) {
+ return -EINVAL;
+ }
+
+ len = 0;
+ for (i = 0; i < nr; ++i) {
+ len += vec[i].iov_len;
+ }
+
+ if (len > LOGGER_ENTRY_MAX_PAYLOAD) {
+ len = LOGGER_ENTRY_MAX_PAYLOAD;
+ }
+
+ logFd = logFds[(int)log_id];
+ ret = TEMP_FAILURE_RETRY(fakeLogWritev(logFd, vec, nr));
+ if (ret < 0) {
+ ret = -errno;
+ } else if (ret > len) {
+ ret = len;
+ }
+
+ return ret;
+}