c4b30791ff
- buf_to_iov() does not use buflen parameter, allowing out of bound read. - buf_to_iov() leaks memory if seek argument > 0. - iov_to_buf() doesn't need to reallocate buffer for every segment. - there is no point to use size_t for iov counts, int is more then enough. - some iov function arguments can be constified. - pci_vtscsi_request_handle() used truncate_iov() incorrectly, allowing getting out of buffer and possibly corrupting data. - pci_vtscsi_controlq_notify() written returned status at wrong offset. - pci_vtscsi_controlq_notify() leaked one buffer per event. Reported by: wg Reviewed by: araujo MFC after: 1 week Sponsored by: iXsystems, Inc. Differential Revision: https://reviews.freebsd.org/D18465
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2016 Jakub Klama <jceel@FreeBSD.org>.
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* Copyright (c) 2018 Alexander Motin <mav@FreeBSD.org>
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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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* in this position and unchanged.
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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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* $FreeBSD$
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*/
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#ifndef _IOV_H_
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#define _IOV_H_
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void seek_iov(const struct iovec *iov1, int niov1, struct iovec *iov2,
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int *niov2, size_t seek);
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void truncate_iov(struct iovec *iov, int *niov, size_t length);
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size_t count_iov(const struct iovec *iov, int niov);
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ssize_t iov_to_buf(const struct iovec *iov, int niov, void **buf);
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ssize_t buf_to_iov(const void *buf, size_t buflen, struct iovec *iov, int niov,
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size_t seek);
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#endif /* _IOV_H_ */
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