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9d350f08c0
Sometimes we want to roll-back to a previous firmware version. To do so we need a higher riotbot version numbers still. Add an update command to the riotboot_gen_hdr tool so that an existing firmware image can be re-rolled out with a new version number.
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Copyright (C) 2017 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License v2. See the file LICENSE for more details.
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*/
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#ifndef COMMON_H
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#define COMMON_H
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Write len bytes of a given buffer into a file
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*
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* @param[in] filename name of the file to be written
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* @param[in] buf a pointer to the buffer which needs to be written
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* @param[in] len the number of bytes from buf to be written
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*
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*/
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int to_file(const char *filename, const void *buf, size_t len);
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/**
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* @brief Read len bytes from a given file into a buffer
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*
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* @param[in] filename name of the file to be read
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* @param[out] buf a pointer to the buffer to store the content
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* @param[out] len the number of bytes to be read
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*
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* @return Number of bytes read, or negative error
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*/
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int from_file(const char *filename, const void *buf, size_t len);
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#ifdef __cplusplus
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} /* end extern "C" */
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#endif
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#endif /* COMMON_H */
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