6b3a9a0f3d
semantic patch: @@ expression rights, r; @@ - cap_rights_init(&rights, r) + cap_rights_init_one(&rights, r)
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*-
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* Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* This software was developed by BAE Systems, the University of Cambridge
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* Computer Laboratory, and Memorial University under DARPA/AFRL contract
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* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
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* (TC) research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/capsicum.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/file.h>
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#include <sys/proc.h>
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#include <machine/sgx.h>
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#include <machine/../linux/linux.h>
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#include <machine/../linux/linux_proto.h>
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#include <compat/linux/linux_ioctl.h>
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#include <amd64/sgx/sgxvar.h>
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#include <sys/ioccom.h>
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#define SGX_LINUX_IOCTL_MIN (SGX_IOC_ENCLAVE_CREATE & 0xffff)
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#define SGX_LINUX_IOCTL_MAX (SGX_IOC_ENCLAVE_INIT & 0xffff)
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static int
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sgx_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
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{
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uint8_t data[SGX_IOCTL_MAX_DATA_LEN];
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cap_rights_t rights;
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struct file *fp;
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u_long cmd;
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int error;
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int len;
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error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL),
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&fp);
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if (error != 0)
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return (error);
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cmd = args->cmd;
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args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
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if ((cmd & LINUX_IOC_IN) != 0)
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args->cmd |= IOC_IN;
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if ((cmd & LINUX_IOC_OUT) != 0)
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args->cmd |= IOC_OUT;
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len = IOCPARM_LEN(cmd);
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if (len > SGX_IOCTL_MAX_DATA_LEN) {
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error = EINVAL;
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goto out;
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}
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if ((cmd & LINUX_IOC_IN) != 0) {
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error = copyin((void *)args->arg, data, len);
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if (error != 0)
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goto out;
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}
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error = fo_ioctl(fp, args->cmd, (caddr_t)data, td->td_ucred, td);
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out:
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fdrop(fp, td);
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return (error);
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}
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static struct linux_ioctl_handler sgx_linux_handler = {
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sgx_linux_ioctl,
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SGX_LINUX_IOCTL_MIN,
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SGX_LINUX_IOCTL_MAX,
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};
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SYSINIT(sgx_linux_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_ioctl_register_handler, &sgx_linux_handler);
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SYSUNINIT(sgx_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_ioctl_unregister_handler, &sgx_linux_handler);
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static int
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sgx_linux_modevent(module_t mod, int type, void *data)
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{
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return (0);
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}
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DEV_MODULE(sgx_linux, sgx_linux_modevent, NULL);
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MODULE_DEPEND(sgx_linux, linux64, 1, 1, 1);
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