From: Russell King <rmk@arm.linux.org.uk>
To: Brian Gerst <bgerst@didntduck.org>
Cc: blesson paul <blessonpaul@msn.com>, linux-kernel@vger.kernel.org
Subject: Re: put_user_byte()
Date: Sat, 13 Apr 2002 09:57:28 +0100 [thread overview]
Message-ID: <20020413095728.A19090@flint.arm.linux.org.uk> (raw)
In-Reply-To: <F38uSbh29cM3oryKFRJ00031d09@hotmail.com> <3CB56D05.6040702@didntduck.org>
On Thu, Apr 11, 2002 at 07:01:25AM -0400, Brian Gerst wrote:
> Use put_user(val, uaddr).
Correct.
> val must be of type unsigned char (or casted to it).
put_user does not care what value you pass it as val. It only cares
about the type of uaddr. The following are all equivalent as far as
the size of the data type written to user space:
put_user((int)foo, (char *)bar);
put_user((char)foo, (char *)bar);
put_user((long)foo, (char *)bar);
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
prev parent reply other threads:[~2002-04-13 8:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-11 5:54 put_user_byte() blesson paul
2002-04-11 11:01 ` put_user_byte() Brian Gerst
2002-04-13 8:57 ` Russell King [this message]
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