From: Robert Hancock <hancockr@shaw.ca>
To: liangbowen <liangbowen@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: problem with <asm/semaphore.h>
Date: Wed, 18 Apr 2007 18:50:45 -0600 [thread overview]
Message-ID: <4626BCE5.6090109@shaw.ca> (raw)
In-Reply-To: <1176885218.597268.304370@l77g2000hsb.googlegroups.com>
liangbowen wrote:
> Hi
>
> I compiled the following code with gcc under FC2 :
>
> #include <asm/semaphore.h>
> main()
> {
> struct semaphore sum;
>
> }
>
> It doesn't compile, saying "storage size of `sem'
> isn't known".
>
> and I looked inside asm/semaphore.h, I saw:
> #ifndef I386_SEMAPHORE_H
> #define I386_SEMAPHORE_H
>
> #include <linux/linkage.h>
>
> #endif
>
> Did I missed something? Please guide me how to fix it.
>
> Sincerely
You're trying to use a kernel data structure in a user-space program.
Don't. The definitions in that header are inside #ifdef __KERNEL__ and
so the provided userspace headers remove that part.
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/
next parent reply other threads:[~2007-04-19 0:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1176885218.597268.304370@l77g2000hsb.googlegroups.com>
2007-04-19 0:50 ` Robert Hancock [this message]
[not found] ` <fa.fBTtgscoj66JCf4bIm8v290vCRo@ifi.uio.no>
[not found] ` <fa.w5cKcLCYzl2eiKiQW21MMlLALWM@ifi.uio.no>
[not found] ` <1176961482.904618.250700@e65g2000hsc.googlegroups.com>
2007-04-19 14:26 ` problem with <asm/semaphore.h> Robert Hancock
[not found] ` <fa.AvTW9UjANJ733AbQtnQmG3hvo7U@ifi.uio.no>
[not found] ` <fa.BgzkXXMJTw3V0hCHG6tJNpgDbkw@ifi.uio.no>
[not found] ` <fa.aUMayTTuQ16UFy6Q+LWR4hiTB1Q@ifi.uio.no>
[not found] ` <fa.633EuMGTHsDpCL9UutDSzsItJUQ@ifi.uio.no>
[not found] ` <1177003071.879067.80590@n76g2000hsh.googlegroups.com>
2007-04-21 22:57 ` Robert Hancock
2002-06-04 11:41 bonganilinux
2002-06-04 11:44 ` Thomas 'Dent' Mirlacher
-- strict thread matches above, loose matches on Subject: below --
2002-06-04 11:19 Hossein Mobahi
2002-06-04 11:44 ` Shanks
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