Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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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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* 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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