FreeBSD/Linux Kernel Cross Reference
sys/dev/tdfx/tdfx_linux.c

     /*-
      * Copyright (c) 2006 The FreeBSD Project
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/file.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/proc.h>
    #include <sys/systm.h>
    
    #include <dev/tdfx/tdfx_linux.h>
    
    LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX);
    
    /*
     * Linux emulation IOCTL for /dev/tdfx
     */
    static int
    linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args)
    {
       int error = 0;
       u_long cmd = args->cmd & 0xffff;
    
       /* The structure passed to ioctl has two shorts, one int
          and one void*. */
       char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)];
    
       struct file *fp;
    
       if ((error = fget(td, args->fd, &fp)) != 0)
               return (error);
       /* We simply copy the data and send it right to ioctl */
       copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio));
       error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td);
       fdrop(fp, td);
       return error;
    }
    
    static int
    tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused)
    {
    
            switch (what) {
            case MOD_LOAD:
            case MOD_UNLOAD:
                    return (0);
            }
            return (EOPNOTSUPP);
    }
    
    static moduledata_t tdfx_linux_mod = {
            "tdfx_linux",
            tdfx_linux_modevent,
            0
    };
    
    /* As in SYSCALL_MODULE */
    DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
    MODULE_VERSION(tdfx_linux, 1);
    MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1);
    MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1);

Cache object: f7086514b23c5f02ea714b5a81fc9a9c