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;
+}