7fcfe1cf74
Add the sizeof_field() macro which returns the size of a struct field. This is used by Linux kernel code including ext4. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
29 lines
553 B
C
29 lines
553 B
C
#ifndef _LINUX_STDDEF_H
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#define _LINUX_STDDEF_H
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#include <linux/compiler_types.h>
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#undef NULL
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#if defined(__cplusplus)
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#define NULL 0
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#else
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#define NULL ((void *)0)
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#endif
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#ifndef _SIZE_T
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#include <linux/types.h>
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#endif
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#undef offsetof
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#define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER)
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/**
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* sizeof_field() - Report the size of a struct field in bytes
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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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#endif
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