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81 lines
2.5 KiB
81 lines
2.5 KiB
/*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.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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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include DEF_MPERS_TYPE(struct_msghdr)
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#include "msghdr.h"
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typedef struct msghdr struct_msghdr;
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#include MPERS_DEFS
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/*
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* On success, return the number of fetched bytes.
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* On error, return 0;
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*
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* This function cannot use umove_or_printaddr because
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* it is called by dumpio and therefore cannot print anything.
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*/
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MPERS_PRINTER_DECL(int, fetch_struct_msghdr,
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struct tcb *const tcp, const kernel_ulong_t addr,
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void *const p)
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{
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struct msghdr *const p_native = p;
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struct_msghdr v_compat;
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if (sizeof(*p_native) == sizeof(v_compat))
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return umove(tcp, addr, p_native) ? 0 : sizeof(*p_native);
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if (umove(tcp, addr, &v_compat))
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return 0;
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p_native->msg_name = (void *) (unsigned long)
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v_compat.msg_name;
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p_native->msg_namelen =
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v_compat.msg_namelen;
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p_native->msg_iov = (void *) (unsigned long)
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v_compat.msg_iov;
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p_native->msg_iovlen =
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v_compat.msg_iovlen;
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p_native->msg_control = (void *) (unsigned long)
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v_compat.msg_control;
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p_native->msg_controllen =
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v_compat.msg_controllen;
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p_native->msg_flags =
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v_compat.msg_flags;
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return sizeof(v_compat);
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}
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