Merge changes from topic "e2fsprogs_vendor_ramdisk"

* changes:
  fs_config Add first_stage_ramdisk/system/bin/linker[64]
  libsparse: make vendor_ramdisk_available.
  init: don't abort if directory already exists

Author: Yifan Hong

init/first_stage_init.cpp

@@ -117,7 +117,7 @@ void PrepareSwitchRoot() {
 
     auto dst_dir = android::base::Dirname(dst);
     std::error_code ec;
-    if (!fs::create_directories(dst_dir, ec)) {
+    if (!fs::create_directories(dst_dir, ec) && !!ec) {
         LOG(FATAL) << "Cannot create " << dst_dir << ": " << ec.message();
     }
     if (rename(src, dst) != 0) {
@@ -315,7 +315,7 @@ int FirstStageMain(int argc, char** argv) {
         std::string dest = GetRamdiskPropForSecondStage();
         std::string dir = android::base::Dirname(dest);
         std::error_code ec;
-        if (!fs::create_directories(dir, ec)) {
+        if (!fs::create_directories(dir, ec) && !!ec) {
             LOG(FATAL) << "Can't mkdir " << dir << ": " << ec.message();
         }
         if (!fs::copy_file(kBootImageRamdiskProp, dest, ec)) {

libcutils/fs_config.cpp

@@ -203,9 +203,14 @@ static const struct fs_path_config android_files[] = {
                                            CAP_MASK_LONG(CAP_SETGID),
                                               "system/bin/simpleperf_app_runner" },
     { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/e2fsck" },
-    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/tune2fs" },
+#ifdef __LP64__
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/linker64" },
+#else
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/linker" },
+#endif
     { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/resize2fs" },
     { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/snapuserd" },
+    { 00755, AID_ROOT,      AID_ROOT,      0, "first_stage_ramdisk/system/bin/tune2fs" },
     // generic defaults
     { 00755, AID_ROOT,      AID_ROOT,      0, "bin/*" },
     { 00640, AID_ROOT,      AID_SHELL,     0, "fstab.*" },

libsparse/Android.bp

@@ -4,6 +4,7 @@ cc_library {
     name: "libsparse",
     host_supported: true,
     ramdisk_available: true,
+    vendor_ramdisk_available: true,
     recovery_available: true,
     unique_host_soname: true,
     vendor_available: true,