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39 lines
827 B
39 lines
827 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_STDDEF_H |
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#define _LINUX_STDDEF_H |
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#include <uapi/linux/stddef.h> |
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#undef NULL |
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#define NULL ((void *)0) |
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enum { |
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false = 0, |
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true = 1 |
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}; |
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#undef offsetof |
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#ifdef __compiler_offsetof |
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#define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) |
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#else |
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#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) |
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#endif |
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/** |
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* sizeof_field(TYPE, MEMBER) |
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* |
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* @TYPE: The structure containing the field of interest |
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* @MEMBER: The field to return the size of |
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*/ |
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#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER)) |
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/** |
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* offsetofend(TYPE, MEMBER) |
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* |
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* @TYPE: The type of the structure |
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* @MEMBER: The member within the structure to get the end offset of |
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*/ |
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#define offsetofend(TYPE, MEMBER) \ |
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(offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER)) |
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#endif
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