3 files changed, 39 insertions, 5 deletions

diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index e0e9dbcd7..05e750a53 100644
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -27,6 +27,9 @@ else
                                     if [ -e "$(TARGET_RECOVERY_ROOT_OUT)/sbin/fgrep" ]; then \
                                     rm $(TARGET_RECOVERY_ROOT_OUT)/sbin/fgrep; fi; ln -sr $(TARGET_RECOVERY_ROOT_OUT)/sbin/grep $(TARGET_RECOVERY_ROOT_OUT)/sbin/fgrep;
         RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/toybox
+        ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 23; echo $$?),0)
+            RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/dd
+        endif
         ifneq ($(wildcard external/zip/Android.mk),)
             RELINK_SOURCE_FILES += $(TARGET_OUT_OPTIONAL_EXECUTABLES)/zip
         endif
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 7d1b60251..6698491b3 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -43,8 +43,7 @@ endif
 ifeq ($(TW_USE_TOOLBOX), true)
     ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 22; echo $$?),0)
         # These are the only toolbox tools in M. The rest are now in toybox.
-        BSD_TOOLS := \
-            $(if $(filter $(PLATFORM_SDK_VERSION), 23 24), du)
+        BSD_TOOLS :=
 
         OUR_TOOLS := \
             newfs_msdos
@@ -60,9 +59,10 @@ ifeq ($(TW_USE_TOOLBOX), true)
                 stop
         endif
 
-        ifneq (,$(filter $(PLATFORM_SDK_VERSION), 23))
+        ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 24; echo $$?),0)
             BSD_TOOLS += \
                 dd \
+                du \
 
             OUR_TOOLS += \
                 df \
@@ -165,6 +165,7 @@ ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 27; echo $$?),0)
     OUR_TOOLS += getevent
     LOCAL_C_INCLUDES += $(TWRP_TOOLBOX_PATH)
     LOCAL_WHOLE_STATIC_LIBRARIES += libtoolbox_dd
+
     ifneq ($(TW_USE_TOOLBOX), true)
         OUR_TOOLS += newfs_msdos
     endif
@@ -288,6 +289,37 @@ $(TOOLS_H): PRIVATE_CUSTOM_TOOL = echo "/* file generated automatically */" > $@
 $(TOOLS_H):
 	$(transform-generated-source)
 
+
+ifeq ($(TW_USE_TOOLBOX), true)
+    ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 23; echo $$?),0)
+        include $(CLEAR_VARS)
+        LOCAL_MODULE := dd_twrp
+        LOCAL_MODULE_STEM := dd
+        LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin
+        LOCAL_MODULE_TAGS := optional
+        LOCAL_CFLAGS := -include bsd-compatibility.h -DNO_CONV -Wno-unused-parameter
+        LOCAL_C_INCLUDES := system/core/toolbox/upstream-netbsd/include/ system/core/toolbox/upstream-netbsd/bin/dd system/core/toolbox
+
+        LOCAL_SHARED_LIBRARIES := \
+	        libcutils \
+
+        LOCAL_SRC_FILES += \
+            upstream-netbsd/bin/dd/args.c \
+            upstream-netbsd/bin/dd/conv.c \
+            upstream-netbsd/bin/dd/dd.c \
+            upstream-netbsd/bin/dd/dd_hostops.c \
+            upstream-netbsd/bin/dd/misc.c \
+            upstream-netbsd/bin/dd/position.c \
+            upstream-netbsd/lib/libc/gen/getbsize.c \
+            upstream-netbsd/lib/libc/gen/humanize_number.c \
+            upstream-netbsd/lib/libc/stdlib/strsuftoll.c \
+            upstream-netbsd/lib/libc/string/swab.c \
+            upstream-netbsd/lib/libutil/raise_default_signal.c
+
+        include $(BUILD_EXECUTABLE)
+    endif
+endif
+
 # toolbox setenforce is used during init in non-symlink form, so it was
 # required to be included as part of the suite above. if busybox already
 # provides setenforce, we can omit the toolbox symlink
diff --git a/toybox/Android.mk b/toybox/Android.mk
index c21a27235..5f6edec3f 100644
--- a/toybox/Android.mk
+++ b/toybox/Android.mk
@@ -485,7 +485,6 @@ ALL_TOOLS += \
     arp \
     base64 \
     chattr \
-    dd \
     df \
     diff \
     flock \
@@ -547,7 +546,7 @@ ALL_TOOLS += \
     gzip \
     gunzip \
     zcat
-ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 27; echo $$?),0)
+ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 25; echo $$?),0)
 ALL_TOOLS += \
     fmt \
     start \