NetBSD/sys/compat/svr4/svr4_filio.c

/*	$NetBSD: svr4_filio.c,v 1.13 2004/10/27 19:29:57 david Exp $	 */

/*-
 * Copyright (c) 1994 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * 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 NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: svr4_filio.c,v 1.13 2004/10/27 19:29:57 david Exp $");

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/termios.h>
#include <sys/tty.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <net/if.h>
#include <sys/malloc.h>

#include <sys/sa.h>
#include <sys/syscallargs.h>

#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_lwp.h>
#include <compat/svr4/svr4_ucontext.h>
#include <compat/svr4/svr4_syscallargs.h>
#include <compat/svr4/svr4_stropts.h>
#include <compat/svr4/svr4_ioctl.h>
#include <compat/svr4/svr4_filio.h>


int
svr4_fil_ioctl(fp, l, retval, fd, cmd, data)
	struct file *fp;
	struct lwp *l;
	register_t *retval;
	int fd;
	u_long cmd;
	caddr_t data;
{
	struct proc *p = l->l_proc;
	int error;
	int num;
	struct filedesc *fdp = p->p_fd;
	int (*ctl)(struct file *, u_long, void *, struct proc *) =
			fp->f_ops->fo_ioctl;

	*retval = 0;

	if ((fp = fd_getfile(fdp, fd)) == NULL)
                return EBADF;
	switch (cmd) {
	case SVR4_FIOCLEX:
		fdp->fd_ofileflags[fd] |= UF_EXCLOSE;
		return 0;

	case SVR4_FIONCLEX:
		fdp->fd_ofileflags[fd] &= ~UF_EXCLOSE;
		return 0;

	case SVR4_FIOGETOWN:
	case SVR4_FIOSETOWN:
	case SVR4_FIOASYNC:
	case SVR4_FIONBIO:
	case SVR4_FIONREAD:
		if ((error = copyin(data, &num, sizeof(num))) != 0)
			return error;

		switch (cmd) {
		case SVR4_FIOGETOWN:	cmd = FIOGETOWN; break;
		case SVR4_FIOSETOWN:	cmd = FIOSETOWN; break;
		case SVR4_FIOASYNC:	cmd = FIOASYNC;  break;
		case SVR4_FIONBIO:	cmd = FIONBIO;   break;
		case SVR4_FIONREAD:	cmd = FIONREAD;  break;
		}

		error = (*ctl)(fp, cmd, (caddr_t) &num, p);

		if (error)
			return error;

		return copyout(&num, data, sizeof(num));

	default:
		DPRINTF(("Unknown svr4 filio %lx\n", cmd));
		return 0;	/* ENOSYS really */
	}
}