ed34a7fcf2
ioctl(2) commands only have meaning in the context of a file descriptor so translating them in the syscall layer is incorrect. The new handler users an accessor to retrieve/construct a pointer from the last member of the passed structure and relies on type punning to access the other member which requires no translation. Unlike r339174 this change supports both places FIODGNAME is handled. Reviewed by: kib Obtained from: CheriBSD Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D17475
248 lines
6.4 KiB
C
248 lines
6.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2008 David E. O'Brien
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* All rights reserved.
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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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* 3. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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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/capsicum.h>
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#include <sys/cdio.h>
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#include <sys/fcntl.h>
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#include <sys/filio.h>
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#include <sys/file.h>
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#include <sys/ioccom.h>
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#include <sys/malloc.h>
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#include <sys/memrange.h>
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#include <sys/pciio.h>
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#include <sys/proc.h>
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#include <sys/syscall.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysctl.h>
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#include <sys/sysent.h>
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#include <sys/sysproto.h>
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#include <sys/systm.h>
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#include <sys/uio.h>
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#include <compat/freebsd32/freebsd32.h>
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#include <compat/freebsd32/freebsd32_ioctl.h>
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#include <compat/freebsd32/freebsd32_misc.h>
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#include <compat/freebsd32/freebsd32_proto.h>
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CTASSERT(sizeof(struct mem_range_op32) == 12);
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static int
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freebsd32_ioctl_memrange(struct thread *td,
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struct freebsd32_ioctl_args *uap, struct file *fp)
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{
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struct mem_range_op mro;
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struct mem_range_op32 mro32;
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int error;
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u_long com;
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if ((error = copyin(uap->data, &mro32, sizeof(mro32))) != 0)
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return (error);
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PTRIN_CP(mro32, mro, mo_desc);
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CP(mro32, mro, mo_arg[0]);
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CP(mro32, mro, mo_arg[1]);
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com = 0;
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switch (uap->com) {
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case MEMRANGE_GET32:
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com = MEMRANGE_GET;
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break;
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case MEMRANGE_SET32:
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com = MEMRANGE_SET;
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break;
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default:
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panic("%s: unknown MEMRANGE %#x", __func__, uap->com);
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}
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if ((error = fo_ioctl(fp, com, (caddr_t)&mro, td->td_ucred, td)) != 0)
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return (error);
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if ( (com & IOC_OUT) ) {
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CP(mro, mro32, mo_arg[0]);
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CP(mro, mro32, mo_arg[1]);
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error = copyout(&mro32, uap->data, sizeof(mro32));
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}
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return (error);
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}
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static int
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freebsd32_ioctl_barmmap(struct thread *td,
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struct freebsd32_ioctl_args *uap, struct file *fp)
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{
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struct pci_bar_mmap32 pbm32;
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struct pci_bar_mmap pbm;
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int error;
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error = copyin(uap->data, &pbm32, sizeof(pbm32));
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if (error != 0)
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return (error);
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PTRIN_CP(pbm32, pbm, pbm_map_base);
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CP(pbm32, pbm, pbm_sel);
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CP(pbm32, pbm, pbm_reg);
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CP(pbm32, pbm, pbm_flags);
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CP(pbm32, pbm, pbm_memattr);
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pbm.pbm_bar_length = PAIR32TO64(uint64_t, pbm32.pbm_bar_length);
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error = fo_ioctl(fp, PCIOCBARMMAP, (caddr_t)&pbm, td->td_ucred, td);
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if (error == 0) {
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PTROUT_CP(pbm, pbm32, pbm_map_base);
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CP(pbm, pbm32, pbm_map_length);
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#if BYTE_ORDER == LITTLE_ENDIAN
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pbm32.pbm_bar_length1 = pbm.pbm_bar_length;
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pbm32.pbm_bar_length2 = pbm.pbm_bar_length >> 32;
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#else
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pbm32.pbm_bar_length1 = pbm.pbm_bar_length >> 32;
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pbm32.pbm_bar_length2 = pbm.pbm_bar_length;
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#endif
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CP(pbm, pbm32, pbm_bar_off);
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error = copyout(&pbm32, uap->data, sizeof(pbm32));
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}
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return (error);
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}
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static int
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freebsd32_ioctl_sg(struct thread *td,
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struct freebsd32_ioctl_args *uap, struct file *fp)
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{
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struct sg_io_hdr io;
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struct sg_io_hdr32 io32;
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int error;
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if ((error = copyin(uap->data, &io32, sizeof(io32))) != 0)
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return (error);
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CP(io32, io, interface_id);
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CP(io32, io, dxfer_direction);
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CP(io32, io, cmd_len);
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CP(io32, io, mx_sb_len);
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CP(io32, io, iovec_count);
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CP(io32, io, dxfer_len);
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PTRIN_CP(io32, io, dxferp);
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PTRIN_CP(io32, io, cmdp);
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PTRIN_CP(io32, io, sbp);
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CP(io32, io, timeout);
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CP(io32, io, flags);
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CP(io32, io, pack_id);
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PTRIN_CP(io32, io, usr_ptr);
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CP(io32, io, status);
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CP(io32, io, masked_status);
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CP(io32, io, msg_status);
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CP(io32, io, sb_len_wr);
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CP(io32, io, host_status);
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CP(io32, io, driver_status);
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CP(io32, io, resid);
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CP(io32, io, duration);
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CP(io32, io, info);
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if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
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return (error);
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CP(io, io32, interface_id);
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CP(io, io32, dxfer_direction);
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CP(io, io32, cmd_len);
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CP(io, io32, mx_sb_len);
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CP(io, io32, iovec_count);
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CP(io, io32, dxfer_len);
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PTROUT_CP(io, io32, dxferp);
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PTROUT_CP(io, io32, cmdp);
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PTROUT_CP(io, io32, sbp);
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CP(io, io32, timeout);
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CP(io, io32, flags);
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CP(io, io32, pack_id);
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PTROUT_CP(io, io32, usr_ptr);
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CP(io, io32, status);
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CP(io, io32, masked_status);
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CP(io, io32, msg_status);
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CP(io, io32, sb_len_wr);
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CP(io, io32, host_status);
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CP(io, io32, driver_status);
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CP(io, io32, resid);
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CP(io, io32, duration);
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CP(io, io32, info);
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error = copyout(&io32, uap->data, sizeof(io32));
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return (error);
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}
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int
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freebsd32_ioctl(struct thread *td, struct freebsd32_ioctl_args *uap)
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{
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struct ioctl_args ap /*{
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int fd;
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u_long com;
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caddr_t data;
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}*/ ;
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struct file *fp;
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cap_rights_t rights;
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int error;
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error = fget(td, uap->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
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if (error != 0)
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return (error);
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if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
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fdrop(fp, td);
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return (EBADF);
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}
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switch (uap->com) {
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case MEMRANGE_GET32: /* FALLTHROUGH */
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case MEMRANGE_SET32:
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error = freebsd32_ioctl_memrange(td, uap, fp);
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break;
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case SG_IO_32:
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error = freebsd32_ioctl_sg(td, uap, fp);
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break;
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case PCIOCBARMMAP_32:
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error = freebsd32_ioctl_barmmap(td, uap, fp);
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break;
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default:
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fdrop(fp, td);
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ap.fd = uap->fd;
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ap.com = uap->com;
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PTRIN_CP(*uap, ap, data);
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return sys_ioctl(td, &ap);
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}
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fdrop(fp, td);
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return (error);
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}
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