proto: const char __user *filename, uid_t user, gid_t group
parms: filename, user, group
errors:
  - EACCES
  - EFAULT
  - ELOOP
  - ENAMETOOLONG
  - ENOENT
  - ENOMEM
  - ENOTDIR
  - EPERM
  - EROFS
profiles:
  - fs
