On 7/8/2017 9:01 PM, Theodore Ts'o wrote:
> On Sat, Jul 08, 2017 at 12:44:54PM -0700, Linus Torvalds wrote:
>> Yeah, I think attributes are likely much better than some random crazy
>> ioctl interface. They can be listed with generic tools, and have
>> various scripting interfaces in ways that ioct
On Sat, Jul 08, 2017 at 12:44:54PM -0700, Linus Torvalds wrote:
> Yeah, I think attributes are likely much better than some random crazy
> ioctl interface. They can be listed with generic tools, and have
> various scripting interfaces in ways that ioctl's do not sanely have.
I personally don't hav
On Thu, Jul 6, 2017 at 11:27 AM, Andreas Dilger wrote:
>
> IMHO, xattrs are a fairly reasonable interface for accessing
> filesystem-specific
> attributes of a file that do not have generic equivalents on other
> filesystems.
> I can't see there being much value to having AFS-specific syscalls,
On Jul 6, 2017, at 10:14 AM, David Howells wrote:
>
> Christoph Hellwig wrote:
>
>> NAK. Don't overload xattrs with magic behavior just to avoid the need
>> to do proper syscalls or ioctls.
>
> How? This has to work on non-files, files you can't open and mountpoints.
> You can't do an ioctl(
Christoph Hellwig wrote:
> NAK. Don't overload xattrs with magic behavior just to avoid the need
> to do proper syscalls or ioctls.
How? This has to work on non-files, files you can't open and mountpoints.
You can't do an ioctl() on a file opened O_PATH:
if (unlikely(f->f_flags & O_PA
NAK. Don't overload xattrs with magic behavior just to avoid the need
to do proper syscalls or ioctls. This makes them harder to discover,
audit and security fix.
On Thu, Jul 06, 2017 at 03:50:27PM +0100, David Howells wrote:
> Add xattrs to allow the user to get/set metadata in lieu of having p
Add xattrs to allow the user to get/set metadata in lieu of having pioctl()
available. The following xattrs are now available:
(*) afs.cell
The name of the cell in which the vnode's volume resides.
(*) afs.fid
The volume ID, vnode ID and vnode uniquifier of the file as three hex
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