69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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* Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "defs.h"
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#include DEF_MPERS_TYPE(struct_mmsghdr)
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#include "msghdr.h"
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typedef struct mmsghdr struct_mmsghdr;
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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_mmsghdr,
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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 mmsghdr *p_native = p;
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struct_mmsghdr 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_hdr.msg_name = (void *) (unsigned long)
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v_compat.msg_hdr.msg_name;
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p_native->msg_hdr.msg_namelen =
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v_compat.msg_hdr.msg_namelen;
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p_native->msg_hdr.msg_iov = (void *) (unsigned long)
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v_compat.msg_hdr.msg_iov;
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p_native->msg_hdr.msg_iovlen =
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v_compat.msg_hdr.msg_iovlen;
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p_native->msg_hdr.msg_control = (void *) (unsigned long)
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v_compat.msg_hdr.msg_control;
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p_native->msg_hdr.msg_controllen =
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v_compat.msg_hdr.msg_controllen;
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p_native->msg_hdr.msg_flags =
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v_compat.msg_hdr.msg_flags;
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p_native->msg_len =
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v_compat.msg_len;
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return sizeof(v_compat);
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}
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MPERS_PRINTER_DECL(unsigned int, sizeof_struct_mmsghdr, void)
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{
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return sizeof(struct_mmsghdr);
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}
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