//ipaddress/share    /mnt/localdir    cifs   rw,file_mode=0777,dir_mode=0777,username=user,password=pass,noperm    0    0

# chmod -R 0777 /mnt/localdir
chmod: changing permissions of ‘/mnt/localdir’: Permission denied

# chcon -t samba_share_t /mnt/localdir
chcon: failed to change context of ‘/mnt/localdir’ to ‘system_u:object_r:samba_share_t:s0’: Operation not supported

drwxrwxrwx. 2 root root 4096 Jul 20 10:50 localdir