From c674dfb5848845afa1de64cab1e94693c54f741e Mon Sep 17 00:00:00 2001
From: Tao Bao <tbao@google.com>
Date: Thu, 20 Dec 2018 14:25:15 -0800
Subject: Use dynamically linked f2fs executables.

It also reduces the space cost for devices using f2fs (e.g. crosshatch).
/sbin/mkfs.f2fs   722560 => /system/bin/make_f2fs   49568
/sbin/sload.f2fs 1182456 => /system/bin/sload_f2fs 150032

Test: Build and boot recovery on crosshatch. Factory reset.
Test: Install a non-A/B OTA package that formats a f2fs partition.
Change-Id: Ibe70c8d91a1d07e1c78ff9eac19b1f7955800161
---
 Android.mk          |  4 ++--
 CleanSpec.mk        |  1 +
 roots.cpp           | 32 +++++++++++++-------------------
 updater/install.cpp |  9 +++++----
 4 files changed, 21 insertions(+), 25 deletions(-)

diff --git a/Android.mk b/Android.mk
index 7be123069..429c52dbf 100644
--- a/Android.mk
+++ b/Android.mk
@@ -58,8 +58,8 @@ LOCAL_MODULE := recovery_deps
 ifeq ($(TARGET_USERIMAGES_USE_F2FS),true)
 ifeq ($(HOST_OS),linux)
 LOCAL_REQUIRED_MODULES += \
-    sload.f2fs \
-    mkfs.f2fs
+    make_f2fs.recovery \
+    sload_f2fs.recovery
 endif
 endif
 
diff --git a/CleanSpec.mk b/CleanSpec.mk
index e2d97d42b..fec823e7e 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -49,3 +49,4 @@
 # ************************************************
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES/recovery_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libminui_intermediates/import_includes)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/sbin)
diff --git a/roots.cpp b/roots.cpp
index 6db0ca519..290be477c 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -223,34 +223,28 @@ int format_volume(const std::string& volume, const std::string& directory) {
 
   // Has to be f2fs because we checked earlier.
   static constexpr int kSectorSize = 4096;
-  std::string cmd("/sbin/mkfs.f2fs");
-  // clang-format off
   std::vector<std::string> make_f2fs_cmd = {
-    cmd,
-    "-g", "android",
+    "/system/bin/make_f2fs",
+    "-g",
+    "android",
     v->blk_device,
   };
-  // clang-format on
   if (length >= kSectorSize) {
     make_f2fs_cmd.push_back(std::to_string(length / kSectorSize));
   }
 
-  int result = exec_cmd(make_f2fs_cmd);
-  if (result == 0 && !directory.empty()) {
-    cmd = "/sbin/sload.f2fs";
-    // clang-format off
+  if (exec_cmd(make_f2fs_cmd) != 0) {
+    PLOG(ERROR) << "format_volume: Failed to make_f2fs on " << v->blk_device;
+    return -1;
+  }
+  if (!directory.empty()) {
     std::vector<std::string> sload_f2fs_cmd = {
-      cmd,
-      "-f", directory,
-      "-t", volume,
-      v->blk_device,
+      "/system/bin/sload_f2fs", "-f", directory, "-t", volume, v->blk_device,
     };
-    // clang-format on
-    result = exec_cmd(sload_f2fs_cmd);
-  }
-  if (result != 0) {
-    PLOG(ERROR) << "format_volume: Failed " << cmd << " on " << v->blk_device;
-    return -1;
+    if (exec_cmd(sload_f2fs_cmd) != 0) {
+      PLOG(ERROR) << "format_volume: Failed to sload_f2fs on " << v->blk_device;
+      return -1;
+    }
   }
   return 0;
 }
diff --git a/updater/install.cpp b/updater/install.cpp
index 0e1028bd1..20a204a83 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -482,18 +482,19 @@ Value* FormatFn(const char* name, State* state, const std::vector<std::unique_pt
       return StringValue("");
     }
     std::vector<std::string> f2fs_args = {
-      "/sbin/mkfs.f2fs", "-g", "android", "-w", "512", location
+      "/system/bin/make_f2fs", "-g", "android", "-w", "512", location
     };
     if (size >= 512) {
       f2fs_args.push_back(std::to_string(size / 512));
     }
     if (auto status = exec_cmd(f2fs_args); status != 0) {
-      LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
+      LOG(ERROR) << name << ": make_f2fs failed (" << status << ") on " << location;
       return StringValue("");
     }
 
-    if (auto status = exec_cmd({ "/sbin/sload.f2fs", "-t", mount_point, location }); status != 0) {
-      LOG(ERROR) << name << ": sload.f2fs failed (" << status << ") on " << location;
+    if (auto status = exec_cmd({ "/system/bin/sload_f2fs", "-t", mount_point, location });
+        status != 0) {
+      LOG(ERROR) << name << ": sload_f2fs failed (" << status << ") on " << location;
       return StringValue("");
     }
 
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