freebsd-dev/sys/amd64/sgx/sgx_linux.c
Mateusz Guzik 6b3a9a0f3d Convert remaining cap_rights_init users to cap_rights_init_one
semantic patch:

@@

expression rights, r;

@@

- cap_rights_init(&rights, r)
+ cap_rights_init_one(&rights, r)
2021-01-12 13:16:10 +00:00

117 lines
3.4 KiB
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);