Fwd: Suggestion to keep the type of a file or directory in the stat field st_rdev.

François Revol revol at free.fr
Tue Mar 13 16:49:38 PDT 2012

On -10/01/-28163 20:59, Trans wrote:
> On Tue, Mar 13, 2012 at 6:42 AM, Stef Bon <stefbon at gmail.com> wrote:
>> Hi,
>> I've posted a suggestion about making the reading of directories
>> faster when the fileystem is considered to be slow. Recent versions of
>> the KDE dir listning calls, do not lookup the mimetype and .directory
>> files when dealing with a remote or FUSE filesystem. Below is the
>> message about storing information in the st.st_rdev field, which is
>> not used for "normal" files and directories. I did not get a reply
>> there, so I better post it here. What about it?
> BIG FAT +1
> I have thought for a long time now that file systems are way behind the
> times without a type field.

Depending how and where you want this, it will cause trouble...

a) it's not in POSIX.
b) we don't all agree on mime types for directories and other things...
BeOS used application/x-vnd.Be-directory since long before any desktop
on GNU/Linux even considered using mime types...

Are you meaning on a single host, or including in networked fs ? (BTW,
NFSv4 supposedly has some xattr features, but I don't think anyone used
it yet)


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