RE: Kernel 2.x POSIX Compliance/Conformance...

[Randazzo, Michael]

I was using at sem_close(), sem_destroy90, sem_open() ...

according to Posix.4, these are defined in semaphore.h - but
are not defined in /lib/modules/<uname -r>/build/include/semaphore.h

Are Posix.4 calls only for userspace?

M.

-----Original Message-----
From: Valdis.Kletnieks@xxxxxx [mailto:Valdis.Kletnieks@xxxxxx]
Sent: Wednesday, February 04, 2004 2:41 PM
To: Randazzo, Michael
Cc: 'linux-kernel@xxxxxxxxxxxxxxx'
Subject: Re: Kernel 2.x POSIX Compliance/Conformance... 


On Wed, 04 Feb 2004 14:30:39 EST, "Randazzo, Michael" <RANDAZZO@xxxxxxxxxxx>
said:

> I have made attempts to use (Posix semaphores) in my LKM, but find 
> no POSIX support in /lib/modules/<uname -r>/build/include/unistd.h

Attempting to use syscalls intended for userspace while inside the kernel
is generally regarded as Bad Juju.

'man semctl' says:

     Under  Linux,  the  function semctl is not a system call, but is imple-
       mented via the system call ipc(2).

#define __NR_ipc                117

is what you weren't finding in unistd.h
 
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