hide file or directory in android kernel >= 3.11
S1: In you kernel project,including the two files.
S2: Using hide_file() function to hide the dir or file
S3: Using unhide_file() function to unhide the dir or file
Thanks reference : http://www.freebuf.com/articles/system/107829.html
https://github.com/NoviceLive/research-rootkit/blob/master/2-fundamentals/fshid/fshid.c