diff --git a/adb/client/auth.cpp b/adb/client/auth.cpp
index 3eee426..ed6a9a8 100644
--- a/adb/client/auth.cpp
+++ b/adb/client/auth.cpp
@@ -53,6 +53,25 @@
     *new std::map<std::string, std::shared_ptr<RSA>>;
 static std::map<int, std::string>& g_monitored_paths = *new std::map<int, std::string>;
 
+static std::string get_user_info() {
+    std::string hostname;
+    if (getenv("HOSTNAME")) hostname = getenv("HOSTNAME");
+#if !defined(_WIN32)
+    char buf[64];
+    if (hostname.empty() && gethostname(buf, sizeof(buf)) != -1) hostname = buf;
+#endif
+    if (hostname.empty()) hostname = "unknown";
+
+    std::string username;
+    if (getenv("LOGNAME")) username = getenv("LOGNAME");
+#if !defined(_WIN32)
+    if (username.empty() && getlogin()) username = getlogin();
+#endif
+    if (username.empty()) hostname = "unknown";
+
+    return " " + username + "@" + hostname;
+}
+
 static bool calculate_public_key(std::string* out, RSA* private_key) {
     uint8_t binary_key_data[ANDROID_PUBKEY_ENCODED_SIZE];
     if (!android_pubkey_encode(private_key, binary_key_data, sizeof(binary_key_data))) {
@@ -70,6 +89,7 @@
     size_t actual_length = EVP_EncodeBlock(reinterpret_cast<uint8_t*>(out->data()), binary_key_data,
                                            sizeof(binary_key_data));
     out->resize(actual_length);
+    out->append(get_user_info());
     return true;
 }
 
@@ -79,6 +99,7 @@
     mode_t old_mask;
     FILE *f = nullptr;
     int ret = 0;
+    std::string pubkey;
 
     EVP_PKEY* pkey = EVP_PKEY_new();
     BIGNUM* exponent = BN_new();
@@ -92,6 +113,11 @@
     RSA_generate_key_ex(rsa, 2048, exponent, nullptr);
     EVP_PKEY_set1_RSA(pkey, rsa);
 
+    if (!calculate_public_key(&pubkey, rsa)) {
+        LOG(ERROR) << "failed to calculate public key";
+        goto out;
+    }
+
     old_mask = umask(077);
 
     f = fopen(file.c_str(), "w");
@@ -104,7 +130,12 @@
     umask(old_mask);
 
     if (!PEM_write_PrivateKey(f, pkey, nullptr, nullptr, 0, nullptr, nullptr)) {
-        D("Failed to write key");
+        LOG(ERROR) << "Failed to write key";
+        goto out;
+    }
+
+    if (!android::base::WriteStringToFile(pubkey, file + ".pub")) {
+        PLOG(ERROR) << "failed to write public key";
         goto out;
     }
 
diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index 552df41..e2a17c5 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -904,12 +904,12 @@
         }
         buf[8] = '\0';
 
-        if (strcmp(kSideloadServiceExitSuccess, buf) == 0 ||
-            strcmp(kSideloadServiceExitFailure, buf) == 0) {
+        if (strcmp(kMinadbdServicesExitSuccess, buf) == 0 ||
+            strcmp(kMinadbdServicesExitFailure, buf) == 0) {
             printf("\rTotal xfer: %.2fx%*s\n",
                    static_cast<double>(xfer) / (sb.st_size ? sb.st_size : 1),
                    static_cast<int>(strlen(filename) + 10), "");
-            if (strcmp(kSideloadServiceExitFailure, buf) == 0) {
+            if (strcmp(kMinadbdServicesExitFailure, buf) == 0) {
                 return 1;
             }
             return 0;
@@ -961,6 +961,33 @@
     }
 }
 
+static int adb_wipe_devices() {
+    auto wipe_devices_message_size = strlen(kMinadbdServicesExitSuccess);
+    std::string error;
+    unique_fd fd(adb_connect(
+            android::base::StringPrintf("rescue-wipe:userdata:%zu", wipe_devices_message_size),
+            &error));
+    if (fd < 0) {
+        fprintf(stderr, "adb: wipe device connection failed: %s\n", error.c_str());
+        return 1;
+    }
+
+    std::string message(wipe_devices_message_size, '\0');
+    if (!ReadFdExactly(fd, message.data(), wipe_devices_message_size)) {
+        fprintf(stderr, "adb: failed to read wipe result: %s\n", strerror(errno));
+        return 1;
+    }
+
+    if (message == kMinadbdServicesExitSuccess) {
+        return 0;
+    }
+
+    if (message != kMinadbdServicesExitFailure) {
+        fprintf(stderr, "adb: got unexpected message from rescue wipe %s\n", message.c_str());
+    }
+    return 1;
+}
+
 /**
  * Run ppp in "notty" mode against a resource listed as the first parameter
  * eg:
@@ -1643,6 +1670,7 @@
     } else if (!strcmp(argv[0], "rescue")) {
         // adb rescue getprop <prop>
         // adb rescue install <filename>
+        // adb rescue wipe userdata
         if (argc != 3) error_exit("rescue requires two arguments");
         if (!strcmp(argv[1], "getprop")) {
             return adb_connect_command(android::base::StringPrintf("rescue-getprop:%s", argv[2]));
@@ -1650,6 +1678,8 @@
             if (adb_sideload_install(argv[2], true /* rescue_mode */) != 0) {
                 return 1;
             }
+        } else if (!strcmp(argv[1], "wipe") && !strcmp(argv[2], "userdata")) {
+            return adb_wipe_devices();
         } else {
             error_exit("invalid rescue argument");
         }
diff --git a/adb/services.h b/adb/services.h
index 8f3919b..6fc89d7 100644
--- a/adb/services.h
+++ b/adb/services.h
@@ -23,9 +23,10 @@
 constexpr char kShellServiceArgPty[] = "pty";
 constexpr char kShellServiceArgShellProtocol[] = "v2";
 
-// Special flags sent by minadbd that indicate the end of sideload transfer and install result.
-constexpr char kSideloadServiceExitSuccess[] = "DONEDONE";
-constexpr char kSideloadServiceExitFailure[] = "FAILFAIL";
+// Special flags sent by minadbd. They indicate the end of sideload transfer and the result of
+// installation or wipe.
+constexpr char kMinadbdServicesExitSuccess[] = "DONEDONE";
+constexpr char kMinadbdServicesExitFailure[] = "FAILFAIL";
 
 unique_fd create_service_thread(const char* service_name, std::function<void(unique_fd)> func);
 #endif  // SERVICES_H_
diff --git a/liblog/logprint.cpp b/liblog/logprint.cpp
index cec5d96..6b5ea4c 100644
--- a/liblog/logprint.cpp
+++ b/liblog/logprint.cpp
@@ -33,6 +33,7 @@
 #include <string.h>
 #include <sys/param.h>
 #include <sys/types.h>
+#include <wchar.h>
 
 #include <cutils/list.h>
 #include <log/log.h>
@@ -1134,66 +1135,13 @@
 }
 
 /*
- * One utf8 character at a time
- *
- * Returns the length of the utf8 character in the buffer,
- * or -1 if illegal or truncated
- *
- * Open coded from libutils/Unicode.cpp, borrowed from utf8_length(),
- * can not remove from here because of library circular dependencies.
- * Expect one-day utf8_character_length with the same signature could
- * _also_ be part of libutils/Unicode.cpp if its usefullness needs to
- * propagate globally.
- */
-static ssize_t utf8_character_length(const char* src, size_t len) {
-  const char* cur = src;
-  const char first_char = *cur++;
-  static const uint32_t kUnicodeMaxCodepoint = 0x0010FFFF;
-  int32_t mask, to_ignore_mask;
-  size_t num_to_read;
-  uint32_t utf32;
-
-  if ((first_char & 0x80) == 0) { /* ASCII */
-    return first_char ? 1 : -1;
-  }
-
-  /*
-   * (UTF-8's character must not be like 10xxxxxx,
-   *  but 110xxxxx, 1110xxxx, ... or 1111110x)
-   */
-  if ((first_char & 0x40) == 0) {
-    return -1;
-  }
-
-  for (utf32 = 1, num_to_read = 1, mask = 0x40, to_ignore_mask = 0x80;
-       num_to_read < 5 && (first_char & mask); num_to_read++, to_ignore_mask |= mask, mask >>= 1) {
-    if (num_to_read > len) {
-      return -1;
-    }
-    if ((*cur & 0xC0) != 0x80) { /* can not be 10xxxxxx? */
-      return -1;
-    }
-    utf32 = (utf32 << 6) + (*cur++ & 0b00111111);
-  }
-  /* "first_char" must be (110xxxxx - 11110xxx) */
-  if (num_to_read >= 5) {
-    return -1;
-  }
-  to_ignore_mask |= mask;
-  utf32 |= ((~to_ignore_mask) & first_char) << (6 * (num_to_read - 1));
-  if (utf32 > kUnicodeMaxCodepoint) {
-    return -1;
-  }
-  return num_to_read;
-}
-
-/*
  * Convert to printable from message to p buffer, return string length. If p is
  * NULL, do not copy, but still return the expected string length.
  */
-static size_t convertPrintable(char* p, const char* message, size_t messageLen) {
+size_t convertPrintable(char* p, const char* message, size_t messageLen) {
   char* begin = p;
   bool print = p != NULL;
+  mbstate_t mb_state = {};
 
   while (messageLen) {
     char buf[6];
@@ -1201,11 +1149,10 @@
     if ((size_t)len > messageLen) {
       len = messageLen;
     }
-    len = utf8_character_length(message, len);
+    len = mbrtowc(nullptr, message, len, &mb_state);
 
     if (len < 0) {
-      snprintf(buf, sizeof(buf), ((messageLen > 1) && isdigit(message[1])) ? "\\%03o" : "\\%o",
-               *message & 0377);
+      snprintf(buf, sizeof(buf), "\\x%02X", static_cast<unsigned char>(*message));
       len = 1;
     } else {
       buf[0] = '\0';
@@ -1225,7 +1172,7 @@
         } else if (*message == '\\') {
           strcpy(buf, "\\\\");
         } else if ((*message < ' ') || (*message & 0x80)) {
-          snprintf(buf, sizeof(buf), "\\%o", *message & 0377);
+          snprintf(buf, sizeof(buf), "\\x%02X", static_cast<unsigned char>(*message));
         }
       }
       if (!buf[0]) {
diff --git a/liblog/tests/Android.bp b/liblog/tests/Android.bp
index 50755ce..d9d1a21 100644
--- a/liblog/tests/Android.bp
+++ b/liblog/tests/Android.bp
@@ -62,6 +62,7 @@
         "log_system_test.cpp",
         "log_time_test.cpp",
         "log_wrap_test.cpp",
+        "logprint_test.cpp",
     ],
     shared_libs: [
         "libcutils",
diff --git a/liblog/tests/logprint_test.cpp b/liblog/tests/logprint_test.cpp
new file mode 100644
index 0000000..7ca02ac
--- /dev/null
+++ b/liblog/tests/logprint_test.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2019 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 <gtest/gtest.h>
+
+size_t convertPrintable(char* p, const char* message, size_t messageLen);
+
+TEST(liblog, convertPrintable_ascii) {
+  auto input = "easy string, output same";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+  EXPECT_STREQ(input, output);
+}
+
+TEST(liblog, convertPrintable_escapes) {
+  // Note that \t is not escaped.
+  auto input = "escape\a\b\t\v\f\r\\";
+  auto expected_output = "escape\\a\\b\t\\v\\f\\r\\\\";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
+
+TEST(liblog, convertPrintable_validutf8) {
+  auto input = u8"¢ह€𐍈";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(input));
+  EXPECT_STREQ(input, output);
+}
+
+TEST(liblog, convertPrintable_invalidutf8) {
+  auto input = "\x80\xC2\x01\xE0\xA4\x06\xE0\x06\xF0\x90\x8D\x06\xF0\x90\x06\xF0\x0E";
+  auto expected_output =
+      "\\x80\\xC2\\x01\\xE0\\xA4\\x06\\xE0\\x06\\xF0\\x90\\x8D\\x06\\xF0\\x90\\x06\\xF0\\x0E";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
+
+TEST(liblog, convertPrintable_mixed) {
+  auto input =
+      u8"\x80\xC2¢ह€𐍈\x01\xE0\xA4\x06¢ह€𐍈\xE0\x06\a\b\xF0\x90¢ह€𐍈\x8D\x06\xF0\t\t\x90\x06\xF0\x0E";
+  auto expected_output =
+      u8"\\x80\\xC2¢ह€𐍈\\x01\\xE0\\xA4\\x06¢ह€𐍈\\xE0\\x06\\a\\b\\xF0\\x90¢ह€𐍈\\x8D\\x06\\xF0\t\t"
+      u8"\\x90\\x06\\xF0\\x0E";
+  auto output_size = convertPrintable(nullptr, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+
+  char output[output_size];
+
+  output_size = convertPrintable(output, input, strlen(input));
+  EXPECT_EQ(output_size, strlen(expected_output));
+  EXPECT_STREQ(expected_output, output);
+}
diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index 5cc0857..e460b1a 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -220,7 +220,9 @@
       }
     }
 
-    if (!initialized_ && !InitPublicNamespace(library_path.c_str(), error_msg)) {
+    // Initialize the anonymous namespace with the first non-empty library path.
+    if (!library_path.empty() && !initialized_ &&
+        !InitPublicNamespace(library_path.c_str(), error_msg)) {
       return nullptr;
     }