FreeBSD/Linux Kernel Cross Reference
sys/amd64/sgx/sgx_linux.c

     /*-
      * Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com>
      * All rights reserved.
      *
      * This software was developed by BAE Systems, the University of Cambridge
      * Computer Laboratory, and Memorial University under DARPA/AFRL contract
      * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
      * (TC) research program.
      *
     * 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/systm.h>
    #include <sys/capsicum.h>
    #include <sys/conf.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/file.h>
    #include <sys/proc.h>
    
    #include <machine/sgx.h>
    #include <machine/../linux/linux.h>
    #include <machine/../linux/linux_proto.h>
    #include <compat/linux/linux_ioctl.h>
    
    #include <amd64/sgx/sgxvar.h>
    
    #include <sys/ioccom.h>
    
    #define SGX_LINUX_IOCTL_MIN     (SGX_IOC_ENCLAVE_CREATE & 0xffff)
    #define SGX_LINUX_IOCTL_MAX     (SGX_IOC_ENCLAVE_INIT & 0xffff)
    
    static int
    sgx_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
    {
            uint8_t data[SGX_IOCTL_MAX_DATA_LEN];
            cap_rights_t rights;
            struct file *fp;
            u_long cmd;
            int error;
            int len;
    
            error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL),
                &fp);
            if (error != 0)
                    return (error);
    
            cmd = args->cmd;
    
            args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
            if ((cmd & LINUX_IOC_IN) != 0)
                    args->cmd |= IOC_IN;
            if ((cmd & LINUX_IOC_OUT) != 0)
                    args->cmd |= IOC_OUT;
    
            len = IOCPARM_LEN(cmd);
            if (len > SGX_IOCTL_MAX_DATA_LEN) {
                    error = EINVAL;
                    goto out;
            }
    
            if ((cmd & LINUX_IOC_IN) != 0) {
                    error = copyin((void *)args->arg, data, len);
                    if (error != 0)
                            goto out;
            }
    
            error = fo_ioctl(fp, args->cmd, (caddr_t)data, td->td_ucred, td);
    out:
            fdrop(fp, td);
            return (error);
    }
    
    static struct linux_ioctl_handler sgx_linux_handler = {
            sgx_linux_ioctl,
            SGX_LINUX_IOCTL_MIN,
           SGX_LINUX_IOCTL_MAX,
   };
   
   SYSINIT(sgx_linux_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
       linux_ioctl_register_handler, &sgx_linux_handler);
   SYSUNINIT(sgx_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
       linux_ioctl_unregister_handler, &sgx_linux_handler);
   
   static int
   sgx_linux_modevent(module_t mod, int type, void *data)
   {
   
           return (0);
   }
   
   DEV_MODULE(sgx_linux, sgx_linux_modevent, NULL);
   MODULE_DEPEND(sgx_linux, linux64, 1, 1, 1);

Cache object: 9bc1cc4f43f3fac0e9468e89c90ecf8a