auto import from //depot/cupcake/@135843
diff --git a/libc/bionic/logd_write.c b/libc/bionic/logd_write.c
new file mode 100644
index 0000000..7c3608b
--- /dev/null
+++ b/libc/bionic/logd_write.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <time.h>
+#include <stdio.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <fcntl.h>
+
+#include <cutils/logger.h>
+#include "logd.h"
+
+#include <pthread.h>
+
+#define LOG_BUF_SIZE 1024
+
+typedef enum {
+ LOG_ID_MAIN = 0,
+ LOG_ID_RADIO,
+ LOG_ID_MAX
+} log_id_t;
+
+static int __write_to_log_init(log_id_t, struct iovec *vec);
+static int (*write_to_log)(log_id_t, struct iovec *vec) = __write_to_log_init;
+static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static int log_fds[(int)LOG_ID_MAX] = { -1, -1 };
+
+static int __write_to_log_null(log_id_t log_fd, struct iovec *vec)
+{
+ return -1;
+}
+
+static int __write_to_log_kernel(log_id_t log_id, struct iovec *vec)
+{
+ ssize_t ret;
+ int log_fd;
+
+ if ((int)log_id >= 0 && (int)log_id < (int)LOG_ID_MAX) {
+ log_fd = log_fds[(int)log_id];
+ } else {
+ return EBADF;
+ }
+
+ do {
+ ret = writev(log_fd, vec, 3);
+ } while (ret < 0 && errno == EINTR);
+
+ return ret;
+}
+
+static int __write_to_log_init(log_id_t log_id, struct iovec *vec)
+{
+ pthread_mutex_lock(&log_init_lock);
+
+ if (write_to_log == __write_to_log_init) {
+ log_fds[LOG_ID_MAIN] = open("/dev/"LOGGER_LOG_MAIN, O_WRONLY);
+ log_fds[LOG_ID_RADIO] = open("/dev/"LOGGER_LOG_RADIO, O_WRONLY);
+
+ write_to_log = __write_to_log_kernel;
+
+ if (log_fds[LOG_ID_MAIN] < 0 || log_fds[LOG_ID_RADIO] < 0) {
+ close(log_fds[LOG_ID_MAIN]);
+ close(log_fds[LOG_ID_RADIO]);
+ log_fds[LOG_ID_MAIN] = -1;
+ log_fds[LOG_ID_RADIO] = -1;
+ write_to_log = __write_to_log_null;
+ }
+ }
+
+ pthread_mutex_unlock(&log_init_lock);
+
+ return write_to_log(log_id, vec);
+}
+
+static int __android_log_write(int prio, const char *tag, const char *msg)
+{
+ struct iovec vec[3];
+ log_id_t log_id = LOG_ID_MAIN;
+
+ if (!tag)
+ tag = "";
+
+ if (!strcmp(tag, "HTC_RIL"))
+ log_id = LOG_ID_RADIO;
+
+ vec[0].iov_base = (unsigned char *) &prio;
+ vec[0].iov_len = 1;
+ vec[1].iov_base = (void *) tag;
+ vec[1].iov_len = strlen(tag) + 1;
+ vec[2].iov_base = (void *) msg;
+ vec[2].iov_len = strlen(msg) + 1;
+
+ return write_to_log(log_id, vec);
+}
+
+
+static int __android_log_vprint(int prio, const char *tag, const char *fmt,
+ va_list ap)
+{
+ char buf[LOG_BUF_SIZE];
+
+ vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
+
+ return __android_log_write(prio, tag, buf);
+}
+
+int __libc_android_log_print(int prio, const char *tag, const char *fmt, ...)
+{
+ va_list ap;
+ char buf[LOG_BUF_SIZE];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
+ va_end(ap);
+
+ return __android_log_write(prio, tag, buf);
+}
+
+int __libc_android_log_assert(const char *cond, const char *tag,
+ const char *fmt, ...)
+{
+ va_list ap;
+ char buf[LOG_BUF_SIZE];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
+ va_end(ap);
+
+ __android_log_write(ANDROID_LOG_FATAL, tag, buf);
+
+ exit(1);
+
+ return -1;
+}