diff --git a/adb/Android.mk b/adb/Android.mk
index 8d38077..4f19d47 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -208,10 +208,11 @@
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT_SBIN)
 LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_SBIN_UNSTRIPPED)
-LOCAL_C_INCLUDES += system/extras/ext4_utils system/core/fs_mgr/include
+LOCAL_C_INCLUDES += system/extras/ext4_utils
 
 LOCAL_STATIC_LIBRARIES := \
     libadbd \
+    libbase \
     libfs_mgr \
     liblog \
     libcutils \
diff --git a/adb/commandline.cpp b/adb/commandline.cpp
index 3330baa..f9ca5ed 100644
--- a/adb/commandline.cpp
+++ b/adb/commandline.cpp
@@ -209,7 +209,11 @@
         "  adb get-devpath              - prints: <device-path>\n"
         "  adb status-window            - continuously print device status for a specified device\n"
         "  adb remount                  - remounts the /system, /vendor (if present) and /oem (if present) partitions on the device read-write\n"
-        "  adb reboot [bootloader|recovery] - reboots the device, optionally into the bootloader or recovery program\n"
+        "  adb reboot [bootloader|recovery]\n"
+        "                               - reboots the device, optionally into the bootloader or recovery program.\n"
+        "  adb reboot sideload          - reboots the device into the sideload mode in recovery program (adb root required).\n"
+        "  adb reboot sideload-auto-reboot\n"
+        "                               - reboots into the sideload mode, then reboots automatically after the sideload regardless of the result.\n"
         "  adb reboot-bootloader        - reboots the device into the bootloader\n"
         "  adb root                     - restarts the adbd daemon with root permissions\n"
         "  adb unroot                   - restarts the adbd daemon without root permissions\n"
@@ -1126,6 +1130,17 @@
     }
 }
 
+static int adb_connect_command(const char* command) {
+    int fd = adb_connect(command);
+    if (fd != -1) {
+        read_and_dump(fd);
+        adb_close(fd);
+        return 0;
+    }
+    fprintf(stderr, "Error: %s\n", adb_error());
+    return 1;
+}
+
 int adb_commandline(int argc, const char **argv)
 {
     char buf[4096];
@@ -1475,20 +1490,14 @@
              !strcmp(argv[0], "disable-verity") ||
              !strcmp(argv[0], "enable-verity")) {
         char command[100];
-        if (!strcmp(argv[0], "reboot-bootloader"))
+        if (!strcmp(argv[0], "reboot-bootloader")) {
             snprintf(command, sizeof(command), "reboot:bootloader");
-        else if (argc > 1)
+        } else if (argc > 1) {
             snprintf(command, sizeof(command), "%s:%s", argv[0], argv[1]);
-        else
+        } else {
             snprintf(command, sizeof(command), "%s:", argv[0]);
-        int fd = adb_connect(command);
-        if (fd >= 0) {
-            read_and_dump(fd);
-            adb_close(fd);
-            return 0;
         }
-        fprintf(stderr,"error: %s\n", adb_error());
-        return 1;
+        return adb_connect_command(command);
     }
     else if (!strcmp(argv[0], "bugreport")) {
         if (argc != 1) return usage();
@@ -1713,15 +1722,7 @@
         return adb_auth_keygen(argv[1]);
     }
     else if (!strcmp(argv[0], "jdwp")) {
-        int  fd = adb_connect("jdwp");
-        if (fd >= 0) {
-            read_and_dump(fd);
-            adb_close(fd);
-            return 0;
-        } else {
-            fprintf(stderr, "error: %s\n", adb_error());
-            return -1;
-        }
+        return adb_connect_command("jdwp");
     }
     /* "adb /?" is a common idiom under Windows */
     else if (!strcmp(argv[0], "help") || !strcmp(argv[0], "/?")) {
diff --git a/adb/services.cpp b/adb/services.cpp
index abf8ea5..12eb406 100644
--- a/adb/services.cpp
+++ b/adb/services.cpp
@@ -32,6 +32,7 @@
 #endif
 
 #if !ADB_HOST
+#include "base/file.h"
 #include "cutils/android_reboot.h"
 #include "cutils/properties.h"
 #endif
@@ -132,31 +133,72 @@
     adb_close(fd);
 }
 
-void reboot_service(int fd, void *arg)
-{
+static bool reboot_service_impl(int fd, const char* arg) {
+    const char* reboot_arg = arg;
+    bool auto_reboot = false;
+
+    if (strcmp(reboot_arg, "sideload-auto-reboot") == 0) {
+        auto_reboot = true;
+        reboot_arg = "sideload";
+    }
+
     char buf[100];
-    char property_val[PROPERTY_VALUE_MAX];
-    int ret;
+    // It reboots into sideload mode by setting "--sideload" or "--sideload_auto_reboot"
+    // in the command file.
+    if (strcmp(reboot_arg, "sideload") == 0) {
+        if (getuid() != 0) {
+            snprintf(buf, sizeof(buf), "'adb root' is required for 'adb reboot sideload'.\n");
+            WriteStringFully(fd, buf);
+            return false;
+        }
+
+        const char* const recovery_dir = "/cache/recovery";
+        const char* const command_file = "/cache/recovery/command";
+        // Ensure /cache/recovery exists.
+        if (adb_mkdir(recovery_dir, 0770) == -1 && errno != EEXIST) {
+            D("Failed to create directory '%s': %s\n", recovery_dir, strerror(errno));
+            return false;
+        }
+
+        bool write_status = android::base::WriteStringToFile(
+                auto_reboot ? "--sideload_auto_reboot" : "--sideload", command_file);
+        if (!write_status) {
+            return false;
+        }
+
+        reboot_arg = "recovery";
+    }
 
     sync();
 
-    ret = snprintf(property_val, sizeof(property_val), "reboot,%s", (char *) arg);
-    if (ret >= (int) sizeof(property_val)) {
+    char property_val[PROPERTY_VALUE_MAX];
+    int ret = snprintf(property_val, sizeof(property_val), "reboot,%s", reboot_arg);
+    if (ret >= static_cast<int>(sizeof(property_val))) {
         snprintf(buf, sizeof(buf), "reboot string too long. length=%d\n", ret);
-        WriteFdExactly(fd, buf, strlen(buf));
-        goto cleanup;
+        WriteStringFully(fd, buf);
+        return false;
     }
 
     ret = property_set(ANDROID_RB_PROPERTY, property_val);
     if (ret < 0) {
         snprintf(buf, sizeof(buf), "reboot failed: %d\n", ret);
-        WriteFdExactly(fd, buf, strlen(buf));
-        goto cleanup;
+        WriteStringFully(fd, buf);
+        return false;
     }
-    // Don't return early. Give the reboot command time to take effect
-    // to avoid messing up scripts which do "adb reboot && adb wait-for-device"
-    while(1) { pause(); }
-cleanup:
+
+    return true;
+}
+
+void reboot_service(int fd, void* arg)
+{
+    if (reboot_service_impl(fd, static_cast<const char*>(arg))) {
+        // Don't return early. Give the reboot command time to take effect
+        // to avoid messing up scripts which do "adb reboot && adb wait-for-device"
+        while (1) {
+            pause();
+        }
+    }
+
     free(arg);
     adb_close(fd);
 }