From: "Petr Vandrovec" <VANDROVE@vc.cvut.cz>
To: "Khachaturov, Vassilii" <Vassilii.Khachaturov@comverse.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: uid_t and gid_t vs. __kernel_uid_t and __kernel_gid_t
Date: Mon, 14 May 2001 21:14:26 MET-1 [thread overview]
Message-ID: <2E927786773@vcnet.vc.cvut.cz> (raw)
On 14 May 01 at 15:00, Khachaturov, Vassilii wrote:
> I had to communicate uid/gid from an application down
> to a driver, and discovered that uid and gid in user
> space are different from those in kernel space.
ncpfs uses 'unsigned long' in its ncp_mount_data_v4, as MIPS uses
'long' type for uid/gid. Unfortunately it still needs conversions
on some archs, so maybe using u_int64_t is just best solution
(AFAIK as MIPS unsigned long is 64bit, you have to use u_int64_t
if you want same type accross architectures).
Kernel part then just checks wheter uid == (__kernel_uid_t)uid and
gives up if they differ.
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz
next reply other threads:[~2001-05-14 19:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-14 21:14 Petr Vandrovec [this message]
2001-05-16 4:33 ` Ralf Baechle
-- strict thread matches above, loose matches on Subject: below --
2001-05-14 19:37 Khachaturov, Vassilii
2001-05-14 19:49 ` Chris Wing
2001-05-14 19:27 Chris Wing
2001-05-14 19:00 Khachaturov, Vassilii
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