74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015-2018 The strace developers.
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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_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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