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35 lines
673 B
35 lines
673 B
4 months ago
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* erofs-utils/include/erofs/err.h
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*
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* Copyright (C) 2018 HUAWEI, Inc.
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* http://www.huawei.com/
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* Created by Li Guifu <bluce.liguifu@huawei.com>
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*/
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#ifndef __EROFS_ERR_H
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#define __EROFS_ERR_H
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#include <errno.h>
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#define MAX_ERRNO (4095)
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#define IS_ERR_VALUE(x) \
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((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
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static inline void *ERR_PTR(long error)
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{
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return (void *)error;
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}
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static inline int IS_ERR(const void *ptr)
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{
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return IS_ERR_VALUE((unsigned long)ptr);
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}
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static inline long PTR_ERR(const void *ptr)
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{
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return (long) ptr;
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}
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#endif
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