mirror of
https://github.com/Ai-Thinker-Open/Ai-Thinker-Open_RTL8710BX_ALIOS_SDK.git
synced 2025-03-19 11:12:55 +00:00
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
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/*
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* Copyright (C) 2015-2017 Alibaba Group Holding Limited
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*/
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#ifndef AOS_KV_H
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#define AOS_KV_H
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#include <aos/types.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* Add a new KV pair.
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*
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* @param[in] key the key of the KV pair.
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* @param[in] value the value of the KV pair.
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* @param[in] len the length of the value.
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* @param[in] sync save the KV pair to flash right now (should always be 1).
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*
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* @return 0 on success, negative error on failure.
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*/
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int aos_kv_set(const char *key, const void *value, int len, int sync);
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/**
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* Get the KV pair's value stored in buffer by its key.
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*
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* @note: the buffer_len should be larger than the real length of the value,
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* otherwise buffer would be NULL.
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*
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* @param[in] key the key of the KV pair to get.
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* @param[out] buffer the memory to store the value.
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* @param[in-out] buffer_len in: the length of the input buffer.
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* out: the real length of the value.
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*
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* @return 0 on success, negative error on failure.
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*/
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int aos_kv_get(const char *key, void *buffer, int *buffer_len);
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/**
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* Delete the KV pair by its key.
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*
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* @param[in] key the key of the KV pair to delete.
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*
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* @return 0 on success, negative error on failure.
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*/
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int aos_kv_del(const char *key);
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/**
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* Delete the KV pair by key's prefix.
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*
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* @param[in] key the key's prefix of the KV pair to delete.
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*
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* @return 0 on success, negative error on failure.
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*/
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int aos_kv_del_by_prefix(const char *prefix);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AOS_KV_H */
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