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94 lines
3.2 KiB
94 lines
3.2 KiB
4 months ago
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/*
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015-2017 The strace developers.
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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_flock)
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#include DEF_MPERS_TYPE(struct_flock64)
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#include "flock.h"
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typedef struct_kernel_flock struct_flock;
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typedef struct_kernel_flock64 struct_flock64;
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#include MPERS_DEFS
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#define SIZEOF_MEMBER(type, member) \
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sizeof(((type *) NULL)->member)
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#define FLOCK_MEMBERS_EQ(type, member) \
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(SIZEOF_MEMBER(struct_kernel_flock64, member) == SIZEOF_MEMBER(type, member) \
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&& offsetof(struct_kernel_flock64, member) == offsetof(type, member))
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#define FLOCK_STRUCTS_EQ(type) \
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(sizeof(struct_kernel_flock64) == sizeof(type) \
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&& FLOCK_MEMBERS_EQ(type, l_type) \
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&& FLOCK_MEMBERS_EQ(type, l_whence) \
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&& FLOCK_MEMBERS_EQ(type, l_start) \
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&& FLOCK_MEMBERS_EQ(type, l_len) \
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&& FLOCK_MEMBERS_EQ(type, l_pid))
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MPERS_PRINTER_DECL(bool, fetch_struct_flock, struct tcb *const tcp,
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const kernel_ulong_t addr, void *const p)
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{
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struct_kernel_flock64 *pfl = p;
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struct_flock mfl;
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if (FLOCK_STRUCTS_EQ(struct_flock))
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return !umove_or_printaddr(tcp, addr, pfl);
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if (umove_or_printaddr(tcp, addr, &mfl))
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return false;
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pfl->l_type = mfl.l_type;
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pfl->l_whence = mfl.l_whence;
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pfl->l_start = mfl.l_start;
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pfl->l_len = mfl.l_len;
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pfl->l_pid = mfl.l_pid;
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return true;
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}
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MPERS_PRINTER_DECL(bool, fetch_struct_flock64, struct tcb *const tcp,
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const kernel_ulong_t addr, void *const p)
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{
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struct_kernel_flock64 *pfl = p;
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struct_flock64 mfl;
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if (FLOCK_STRUCTS_EQ(struct_flock64))
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return !umove_or_printaddr(tcp, addr, pfl);
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if (umove_or_printaddr(tcp, addr, &mfl))
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return false;
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pfl->l_type = mfl.l_type;
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pfl->l_whence = mfl.l_whence;
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pfl->l_start = mfl.l_start;
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pfl->l_len = mfl.l_len;
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pfl->l_pid = mfl.l_pid;
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return true;
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}
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