On Wed, Aug 06, 2008 at 05:09:07PM +0800, Li Zefan wrote: > + case EXT4_IOC_GETCRTIME: > + return put_user(ei->i_crtime, (struct timespec __user *)arg); > + I'm worried about writing a struct timespec directly to user space, because the kernel's idea of what is struct timespec might not be the same as the userspace's understanding of struct timespec --- specifically, because of the question of the width of time_t might be different in the kernel and in userspace on different architectures. I think we would be better off explicitly defining a structure, or just returning the seconds and nanoseconds in explicit primitive types. Regards, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html