/*- * Copyright (c) 2017 Ruslan Bukin * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #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);