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Message-ID: <3ECBD681.699F5A4C@cs.princeton.edu>
Date: Wed, 21 May 2003 15:41:53 -0400
From: Yaoping Ruan <yruan@cs.princeton.edu>
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To: Vijay.Singh@nokia.com
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cc: freebsd-hackers@freebsd.org
Subject: Re: sendfile in FreeBSD 2.2
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Hi,
VOP_GETVOBJECT() macro is created by kern/vnode_if.pl and vnode_if.src. By running them you should be able to get vnode_if.c and vnode_if.h file. In vnode_if.h, you will get the macro defined as follow: (From FreeBsd 4.6)

static __inline int VOP_GETVOBJECT __P((
        struct vnode *vp,
        struct vm_object **objpp));
static __inline int VOP_GETVOBJECT(vp, objpp)
        struct vnode *vp;
        struct vm_object **objpp;
{
        struct vop_getvobject_args a;
        int rc;
        a.a_desc = VDESC(vop_getvobject);
        a.a_vp = vp;
        a.a_objpp = objpp;
        rc = VCALL(vp, VOFFSET(vop_getvobject), &a);
        return (rc);
}

Hope this helps.

- Yaoping


> Message: 19
> Date: Wed, 21 May 2003 09:32:26 -0700
> From: <Vijay.Singh@nokia.com>
> Subject: sendfile in FreeBSD 2.2
> To: <freebsd-hackers@freebsd.org>
> Message-ID:
>
> Hello. Would it be possible to port the sendfile system call to a FreeBSD 2.2 based system? Has anyone done this? I am trying to port the code from a later FreeBSD release and I have been unable to find out what the VOP_GETVOBJECT() macro does and how/what should it be replaced with for my case. Any help is appreciated.
>
> Thanks
> vijay