android: recovery: try to mount sdcard as exfat

Signed-off-by: hmz007 <hmz007@gmail.com>

bootable/recovery/recovery_utils/roots.cpp

@@ -94,8 +94,8 @@ int ensure_path_mounted(const std::string& path) {
   }
   else{
     printf("ensure_path_mounted sdcard, path=%s \n", path.c_str());
-	v = volume_for_mount_point(path);
-	if (!v) {
+    v = volume_for_mount_point(path);
+    if (!v) {
       printf("ensure_path_mounted No fstab entry for path=%s \n", path.c_str());
       return -1;
     }
@@ -135,17 +135,24 @@ int ensure_path_mounted(const std::string& path) {
       if(NULL == blk_device){
         blk_device = (v->blk_device).c_str();
       }
-      int result = mount((v->blk_device).c_str(), (v->mount_point).c_str(), (v->fs_type).c_str(),
+
+      LOG(ERROR) << "trying mount "<< v->blk_device << " to exfat.";
+      int result = mount((v->blk_device).c_str(), (v->mount_point).c_str(), (char*)"exfat",
+                     MS_NOATIME | MS_NODEV | MS_NODIRATIME, (char*)"");
+      if (result == 0) return 0;
+
+      result = mount((v->blk_device).c_str(), (v->mount_point).c_str(), (v->fs_type).c_str(),
                          MS_NOATIME | MS_NODEV | MS_NODIRATIME, (char*)"shortname=mixed,utf8");
       if (result == 0) return 0;
       printf("v->blk_device is %s\n",(v->blk_device).c_str());
       printf("v->blk_device is %s to vfat.\n",(v->blk_device).c_str());
-      LOG(ERROR) << "trying mount fs"<< blk_device << " to vfat.";
+      LOG(ERROR) << "trying mount "<< blk_device << " to vfat.";
       if (blk_device !=nullptr){
           result = mount(blk_device, (v->mount_point).c_str(), (v->fs_type).c_str(),
                          MS_NOATIME | MS_NODEV | MS_NODIRATIME, (char*)"shortname=mixed,utf8");
           if (result == 0) return 0;
       }
+
       printf("blk_device is %s\n",blk_device);
       LOG(ERROR) << "trying mount "<< v->blk_device << " to ntfs.";
       printf("v->blk_device is %s to ntfs.\n",(v->blk_device).c_str());
@@ -168,7 +175,7 @@ int ensure_path_mounted(const std::string& path) {
                        MS_NOATIME | MS_NODEV | MS_NODIRATIME, (char*)"shortname=mixed,utf8");
         if (result == 0) return 0;
 
-        LOG(ERROR) << "tring mount " << sec_dev << " ntfs.";
+        LOG(ERROR) << "trying mount " << sec_dev << " ntfs.";
         printf("v->blk_device is %s to ntfs.\n",sec_dev);
         result = mount(sec_dev, (v->mount_point).c_str(), (char*)"ntfs",
                        MS_NOATIME | MS_NODEV | MS_NODIRATIME, "");