Manually merge commit 'b406ffa' into stage-aosp-master

* commit 'b406ffa':
  Add support for creating ext4 images with mke2fs

BUG:33304034

Android.mk

@@ -71,6 +71,16 @@ common_static_libraries := \
 vold_conlyflags := -std=c11
 vold_cflags := -Werror -Wall -Wno-missing-field-initializers -Wno-unused-variable -Wno-unused-parameter
 
+required_modules :=
+ifeq ($(TARGET_USERIMAGES_USE_EXT4), true)
+  ifeq ($(TARGET_USES_MKE2FS), true)
+    vold_cflags += -DTARGET_USES_MKE2FS
+    required_modules += mke2fs
+  else
+    required_modules += make_ext4fs
+  endif
+endif
+
 include $(CLEAR_VARS)
 
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
@@ -83,6 +93,7 @@ LOCAL_STATIC_LIBRARIES := $(common_static_libraries)
 LOCAL_MODULE_TAGS := eng tests
 LOCAL_CFLAGS := $(vold_cflags)
 LOCAL_CONLYFLAGS := $(vold_conlyflags)
+LOCAL_REQUIRED_MODULES := $(required_modules)
 
 include $(BUILD_STATIC_LIBRARY)
 
@@ -109,6 +120,7 @@ endif
 
 LOCAL_SHARED_LIBRARIES := $(common_shared_libraries)
 LOCAL_STATIC_LIBRARIES := $(common_static_libraries)
+LOCAL_REQUIRED_MODULES := $(required_modules)
 
 include $(BUILD_EXECUTABLE)
 

cryptfs.c

@@ -2185,6 +2185,19 @@ static int cryptfs_enable_wipe(char *crypto_blkdev, off64_t size, int type)
     int rc = -1;
 
     if (type == EXT4_FS) {
+#ifdef TARGET_USES_MKE2FS
+        args[0] = "/system/bin/mke2fs";
+        args[1] = "-M";
+        args[2] = "/data";
+        args[3] = "-b";
+        args[4] = "4096";
+        args[5] = "-t";
+        args[6] = "ext4";
+        args[7] = crypto_blkdev;
+        snprintf(size_str, sizeof(size_str), "%" PRId64, size / (4096 / 512));
+        args[8] = size_str;
+        num_args = 9;
+#else
         args[0] = "/system/bin/make_ext4fs";
         args[1] = "-a";
         args[2] = "/data";
@@ -2193,6 +2206,7 @@ static int cryptfs_enable_wipe(char *crypto_blkdev, off64_t size, int type)
         args[4] = size_str;
         args[5] = crypto_blkdev;
         num_args = 6;
+#endif
         SLOGI("Making empty filesystem with command %s %s %s %s %s %s\n",
               args[0], args[1], args[2], args[3], args[4], args[5]);
     } else if (type == F2FS_FS) {

fs/Ext4.cpp

@@ -55,7 +55,11 @@ namespace vold {
 namespace ext4 {
 
 static const char* kResizefsPath = "/system/bin/resize2fs";
+#ifdef TARGET_USES_MKE2FS
+static const char* kMkfsPath = "/system/bin/mke2fs";
+#else
 static const char* kMkfsPath = "/system/bin/make_ext4fs";
+#endif
 static const char* kFsckPath = "/system/bin/e2fsck";
 
 bool IsSupported() {
@@ -165,6 +169,25 @@ status_t Format(const std::string& source, unsigned long numSectors,
         const std::string& target) {
     std::vector<std::string> cmd;
     cmd.push_back(kMkfsPath);
+
+#ifdef TARGET_USES_MKE2FS
+    cmd.push_back("-b");
+    cmd.push_back("4096");
+
+    cmd.push_back("-t");
+    cmd.push_back("ext4");
+
+    cmd.push_back("-M");
+    cmd.push_back(target);
+
+    cmd.push_back("-O");
+    cmd.push_back("^has_journal");
+
+    cmd.push_back(source);
+
+    if (numSectors)
+        cmd.push_back(StringPrintf("%lu", numSectors * (4096 / 512)));
+#else
     cmd.push_back("-J");
 
     cmd.push_back("-a");
@@ -178,6 +201,7 @@ status_t Format(const std::string& source, unsigned long numSectors,
     // Always generate a real UUID
     cmd.push_back("-u");
     cmd.push_back(source);
+#endif
 
     return ForkExecvp(cmd);
 }