| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _TOOLS_LINUX_CONTAINER_OF_H |
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| 3 | #define _TOOLS_LINUX_CONTAINER_OF_H |
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| 4 | |
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| 5 | #ifndef container_of |
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| 6 | /** |
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| 7 | * container_of - cast a member of a structure out to the containing structure |
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| 8 | * @ptr: the pointer to the member. |
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| 9 | * @type: the type of the container struct this is embedded in. |
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| 10 | * @member: the name of the member within the struct. |
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| 11 | * |
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| 12 | */ |
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| 13 | #define container_of(ptr, type, member) ({ \ |
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| 14 | const typeof(((type *)0)->member) * __mptr = (ptr); \ |
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| 15 | (type *)((char *)__mptr - offsetof(type, member)); }) |
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| 16 | #endif |
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| 17 | |
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| 18 | #endif /* _TOOLS_LINUX_CONTAINER_OF_H */ |
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| 19 | |
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