80 lines
2.5 KiB
Groff
80 lines
2.5 KiB
Groff
.\" -*- nroff -*-
|
|
.\"
|
|
.\" Copyright (c) 1996 Doug Rabson
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This program is free software.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $Id: VOP_IOCTL.9,v 1.2 1997/03/04 06:20:42 mpp Exp $
|
|
.\"
|
|
.Dd July 24, 1996
|
|
.Os
|
|
.Dt VOP_IOCTL 9
|
|
.Sh NAME
|
|
.Nm VOP_IOCTL
|
|
.Nd device specific control
|
|
.Sh SYNOPSIS
|
|
.Fd #include <sys/param.h>
|
|
.Fd #include <sys/vnode.h>
|
|
.Ft int
|
|
.Fn VOP_IOCTL "struct vnode *vp" "u_long command" "caddr_t data" "int fflag" "struct ucred *cred" "struct proc *p"
|
|
.Sh DESCRIPTION
|
|
Manipulate a file in device dependent ways.
|
|
.Pp
|
|
Its arguments are:
|
|
.Bl -tag -width command
|
|
.It Ar vp
|
|
the vnode of the file (normally representing a device)
|
|
.It Ar command
|
|
the device specific operation to perform
|
|
.It Ar cnp
|
|
extra data for the specified operation
|
|
.It Ar fflag
|
|
some flags ???
|
|
.It Ar cred
|
|
the caller's credentials
|
|
.It Ar p
|
|
the calling process
|
|
.El
|
|
.Pp
|
|
Most filesystems do not implement this entry point.
|
|
.Sh LOCKS
|
|
The file should not be locked on entry.
|
|
.Sh RETURN VALUES
|
|
If successful, zero is returned, otherwise an appropriate error code.
|
|
.Sh PSEUDOCODE
|
|
.Bd -literal
|
|
int
|
|
vop_ioctl(struct vnode *vp, int command, caddr_t data, int fflag,
|
|
struct ucred *cred, struct proc *p)
|
|
{
|
|
return EOPNOTSUPP;
|
|
}
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr vnode 9
|
|
.Sh AUTHORS
|
|
This man page was written by Doug Rabson.
|
|
|