Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Note: this patch can get file path from root pseudo file handle, but a general infrastructure is setup for other file system too. Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: I86cd79ebb741f2f43fdd398bb7498c40687d949b