Re: [PATCH] to allow sys_pread64 and sys_pwrite64 to be used from modules

From: Luke Kenneth Casson Leighton
Date: Wed Sep 29 2004 - 12:42:45 EST


scratch that: i found that vfs_read along with filp_open and filp_close
would do the job.

having a ball :)

On Wed, Sep 29, 2004 at 01:58:35PM +0100, Luke Kenneth Casson Leighton wrote:
> i do not know if this does any damage (and i'm going to find out!)
>
> i seek to use these two functions from an experimental kernel module: i
> get warnings about "symbol not found" without this patch:
>
>
> Index: fs/read_write.c
> ===================================================================
> RCS file: /cvsroot/selinux/nsa/linux-2.6/fs/read_write.c,v
> retrieving revision 1.1.1.6
> diff -u -3 -p -u -r1.1.1.6 read_write.c
> --- fs/read_write.c 18 Jun 2004 19:30:06 -0000 1.1.1.6
> +++ fs/read_write.c 29 Sep 2004 12:45:31 -0000
> @@ -318,6 +318,7 @@ asmlinkage ssize_t sys_pread64(unsigned
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(sys_pread64);
>
> asmlinkage ssize_t sys_pwrite64(unsigned int fd, const char __user *buf,
> size_t count, loff_t pos)
> @@ -337,6 +338,7 @@ asmlinkage ssize_t sys_pwrite64(unsigned
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(sys_pwrite64);
>
> /*
> * Reduce an iovec's length in-place. Return the resulting number of segments
>
>
> --
> --
> Truth, honesty and respect are rare commodities that all spring from
> the same well: Love. If you love yourself and everyone and everything
> around you, funnily and coincidentally enough, life gets a lot better.
> --
> <a href="http://lkcl.net";> lkcl.net </a> <br />
> <a href="mailto:lkcl@xxxxxxxx";> lkcl@xxxxxxxx </a> <br />
>

--
--
Truth, honesty and respect are rare commodities that all spring from
the same well: Love. If you love yourself and everyone and everything
around you, funnily and coincidentally enough, life gets a lot better.
--
<a href="http://lkcl.net";> lkcl.net </a> <br />
<a href="mailto:lkcl@xxxxxxxx";> lkcl@xxxxxxxx </a> <br />

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