embox

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/**
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 * @file
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 * @brief
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 *
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 * @author Aleksey Zhmulin
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 * @date 17.07.23
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 */
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#include <stddef.h>
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#include <lib/libds/msg_buff.h>
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#include <lib/libds/ring_buff.h>
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size_t msg_buff_space(struct msg_buff *buf) {
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	size_t space;
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	space = ring_buff_get_space(&buf->rbuf);
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	if (space < sizeof(size_t)) {
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		space = 0;
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	}
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	else {
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		space -= sizeof(size_t);
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	}
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	return space;
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}
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