/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/param.h>
#include <sys/isa_defs.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/cred.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ttold.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/mode.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/kmem.h>
#include <sys/filio.h>
#include <sys/sunddi.h>
#include <sys/debug.h>
#include <sys/int_limits.h>
#include <sys/model.h>
/*
* I/O control.
*/
int
ioctl(int fdes, int cmd, intptr_t arg)
{
file_t *fp;
int error = 0;
vnode_t *vp;
struct vattr vattr;
int32_t flag;
int rv = 0;
if ((fp = getf(fdes)) == NULL)
return (set_errno(EBADF));
vp = fp->f_vnode;
if (vp->v_type == VREG || vp->v_type == VDIR) {
/*
* Handle these two ioctls for regular files and
* directories. All others will usually be failed
* with ENOTTY by the VFS-dependent code. System V
* always failed all ioctls on regular files, but SunOS
* supported these.
*/
switch (cmd) {
case FIONREAD: {
/*
* offset is int32_t because that is what FIONREAD
* is defined in terms of. We cap at INT_MAX as in
* other cases for this ioctl.
*/
int32_t offset;
vattr.va_mask = AT_SIZE;
error = VOP_GETATTR(vp, &vattr, 0, fp->f_cred, NULL);
if (error) {
releasef(fdes);
return (set_errno(error));
}
offset = MIN(vattr.va_size - fp->f_offset, INT_MAX);
if (copyout(&offset, (caddr_t)arg, sizeof (offset))) {
releasef(fdes);
return (set_errno(EFAULT));
}
releasef(fdes);
return (0);
}
case FIONBIO:
if (copyin((caddr_t)arg, &flag, sizeof (flag))) {
releasef(fdes);
return (set_errno(EFAULT));
}
mutex_enter(&fp->f_tlock);
if (flag)
fp->f_flag |= FNDELAY;
else
fp->f_flag &= ~FNDELAY;
mutex_exit(&fp->f_tlock);
releasef(fdes);
return (0);
default:
break;
}
}
/*
* ioctl() now passes in the model information in some high bits.
*/
flag = fp->f_flag | get_udatamodel();
error = VOP_IOCTL(fp->f_vnode, cmd, arg, flag, CRED(), &rv, NULL);
if (error != 0) {
releasef(fdes);
return (set_errno(error));
}
switch (cmd) {
case FIONBIO:
if (copyin((caddr_t)arg, &flag, sizeof (flag))) {
releasef(fdes);
return (set_errno(EFAULT));
}
mutex_enter(&fp->f_tlock);
if (flag)
fp->f_flag |= FNDELAY;
else
fp->f_flag &= ~FNDELAY;
mutex_exit(&fp->f_tlock);
break;
default:
break;
}
releasef(fdes);
return (rv);
}
/*
* Old stty and gtty. (Still.)
*/
int
stty(int fdes, intptr_t arg)
{
return (ioctl(fdes, TIOCSETP, arg));
}
int
gtty(int fdes, intptr_t arg)
{
return (ioctl(fdes, TIOCGETP, arg));
}