NetBSD/sys/compat/svr4/svr4_filio.c

/*	$NetBSD: svr4_filio.c,v 1.21 2008/04/28 20:23:45 martin Exp $	 */

/*-
 * Copyright (c) 1994, 2008 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.
 *
 * 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 1.21 2008/04/28 20:23:45 martin 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/mount.h>
#include <net/if.h>
#include <sys/malloc.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(file_t *fp, struct lwp *l, register_t *retval, int fd, u_long cmd, void *data)
{
	struct proc *p = l->l_proc;
	int error;
	int num;
	filedesc_t *fdp = p->p_fd;
	fdfile_t *ff;
	int (*ctl)(file_t *, u_long,  void *) = fp->f_ops->fo_ioctl;

	*retval = 0;
	error = 0;

	if ((fp = fd_getfile(fd)) == NULL)
                return EBADF;
	ff = fdp->fd_ofiles[fd];
	switch (cmd) {
	case SVR4_FIOCLEX:
		ff->ff_exclose = 1;
		fdp->fd_exclose = 1;
		break;

	case SVR4_FIONCLEX:
		ff->ff_exclose = 0;
		break;

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

		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, &num);
		if (error == 0)
			error = copyout(&num, data, sizeof(num));
		break;

	default:
		DPRINTF(("Unknown svr4 filio %lx\n", cmd));
		break;
	}
	fd_putfile(fd);
	return error;
}