Re: [PATCH 1/3] ext4: add EXT4_IOC_GETCRTIME ioctl

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

[Index of Archives]     [Reiser Filesystem Development]     [Ceph FS]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite National Park]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]     [Linux Media]

  Powered by Linux