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.
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) 2015-2017 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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