183 lines
3.6 KiB
C
183 lines
3.6 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*
|
|
* @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Miscellaneous trivial functions.
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
|
|
/*
|
|
* Return error for operation not supported
|
|
* on a specific object or file type.
|
|
*/
|
|
int
|
|
eopnotsupp()
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* Generic null operation, always returns success.
|
|
*/
|
|
int
|
|
nullop()
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
#include <sys/conf.h>
|
|
|
|
/*
|
|
* Unsupported devswitch functions (e.g. for writing to read-only device).
|
|
* XXX may belong elsewhere.
|
|
*/
|
|
|
|
int
|
|
noopen(dev, flags, fmt, td)
|
|
dev_t dev;
|
|
int flags;
|
|
int fmt;
|
|
struct thread *td;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
noclose(dev, flags, fmt, td)
|
|
dev_t dev;
|
|
int flags;
|
|
int fmt;
|
|
struct thread *td;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
noread(dev, uio, ioflag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int ioflag;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
nowrite(dev, uio, ioflag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int ioflag;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
noioctl(dev, cmd, data, flags, td)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
int flags;
|
|
struct thread *td;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
nokqfilter(dev, kn)
|
|
dev_t dev;
|
|
struct knote *kn;
|
|
{
|
|
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
nommap(dev, offset, paddr, nprot)
|
|
dev_t dev;
|
|
vm_offset_t offset;
|
|
vm_offset_t *paddr;
|
|
int nprot;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
int
|
|
nodump(void *arg, void *virtual __unused, vm_offset_t physical __unused, off_t offset __unused, size_t length __unused)
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
/*
|
|
* Null devswitch functions (for when the operation always succeeds).
|
|
* XXX may belong elsewhere.
|
|
* XXX not all are here (e.g., seltrue() isn't).
|
|
*/
|
|
|
|
/*
|
|
* XXX this is probably bogus. Any device that uses it isn't checking the
|
|
* minor number.
|
|
*/
|
|
int
|
|
nullopen(dev, flags, fmt, td)
|
|
dev_t dev;
|
|
int flags;
|
|
int fmt;
|
|
struct thread *td;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
nullclose(dev, flags, fmt, td)
|
|
dev_t dev;
|
|
int flags;
|
|
int fmt;
|
|
struct thread *td;
|
|
{
|
|
|
|
return (0);
|
|
}
|