- symlink(2)
 - 
EPERM: The file system containing newpath does not support the creation
of symbolic links.
 - statfs(2), statvfs(2)
 - 
ENOSYS: The file system does not support this call.
 - fsync(2)
 - 
EINVAL: fd is bound to a special file which does  not  support  synchronization.
  
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