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| 1 | +/* |
| 2 | + * Copyright (c) 2024, The OpenThread Authors. |
| 3 | + * All rights reserved. |
| 4 | + * |
| 5 | + * Redistribution and use in source and binary forms, with or without |
| 6 | + * modification, are permitted provided that the following conditions are met: |
| 7 | + * 1. Redistributions of source code must retain the above copyright |
| 8 | + * notice, this list of conditions and the following disclaimer. |
| 9 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | + * notice, this list of conditions and the following disclaimer in the |
| 11 | + * documentation and/or other materials provided with the distribution. |
| 12 | + * 3. Neither the name of the copyright holder nor the |
| 13 | + * names of its contributors may be used to endorse or promote products |
| 14 | + * derived from this software without specific prior written permission. |
| 15 | + * |
| 16 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 17 | + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 20 | + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | + * POSSIBILITY OF SUCH DAMAGE. |
| 27 | + */ |
| 28 | + |
| 29 | +#ifndef PSA_INTERNAL_TRUSTED_STORAGE_H__ |
| 30 | +#define PSA_INTERNAL_TRUSTED_STORAGE_H__ |
| 31 | + |
| 32 | +#include <stdint.h> |
| 33 | + |
| 34 | +#ifdef __cplusplus |
| 35 | +extern "C" { |
| 36 | +#endif |
| 37 | + |
| 38 | +#include "psa/error.h" |
| 39 | + |
| 40 | +/** \brief Flags used when creating a data entry |
| 41 | + */ |
| 42 | +typedef uint32_t psa_storage_create_flags_t; |
| 43 | + |
| 44 | +/** \brief A type for UIDs used for identifying data |
| 45 | + */ |
| 46 | +typedef uint64_t psa_storage_uid_t; |
| 47 | + |
| 48 | +#define PSA_STORAGE_FLAG_NONE 0 /**< No flags to pass */ |
| 49 | +#define PSA_STORAGE_FLAG_WRITE_ONCE (1 << 0) /**< The data associated with the uid will not be able to be modified or deleted. Intended to be used to set bits in `psa_storage_create_flags_t`*/ |
| 50 | + |
| 51 | +/** |
| 52 | + * \brief A container for metadata associated with a specific uid |
| 53 | + */ |
| 54 | +struct psa_storage_info_t { |
| 55 | + uint32_t size; /**< The size of the data associated with a uid **/ |
| 56 | + psa_storage_create_flags_t flags; /**< The flags set when the uid was created **/ |
| 57 | +}; |
| 58 | + |
| 59 | +/** Flag indicating that \ref psa_storage_create and \ref psa_storage_set_extended are supported */ |
| 60 | +#define PSA_STORAGE_SUPPORT_SET_EXTENDED (1 << 0) |
| 61 | + |
| 62 | +#define PSA_ITS_API_VERSION_MAJOR 1 /**< The major version number of the PSA ITS API. It will be incremented on significant updates that may include breaking changes */ |
| 63 | +#define PSA_ITS_API_VERSION_MINOR 1 /**< The minor version number of the PSA ITS API. It will be incremented in small updates that are unlikely to include breaking changes */ |
| 64 | + |
| 65 | +/** |
| 66 | + * \brief Create a new or modify an existing uid/value pair |
| 67 | + * |
| 68 | + * \param[in] aUid The identifier for the data |
| 69 | + * \param[in] aDataLength The size in bytes of the data in `p_data` |
| 70 | + * \param[in] aData A buffer containing the data |
| 71 | + * \param[in] aCreateFlags The flags that the data will be stored with |
| 72 | + * |
| 73 | + * \return A status indicating the success/failure of the operation |
| 74 | + * |
| 75 | + * \retval #PSA_SUCCESS The operation completed successfully |
| 76 | + * \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided `uid` value was already created with PSA_STORAGE_FLAG_WRITE_ONCE |
| 77 | + * \retval #PSA_ERROR_NOT_SUPPORTED The operation failed because one or more of the flags provided in `create_flags` is not supported or is not valid |
| 78 | + * \retval #PSA_ERROR_INSUFFICIENT_STORAGE The operation failed because there was insufficient space on the storage medium |
| 79 | + * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) |
| 80 | + * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_data`) |
| 81 | + * is invalid, for example is `NULL` or references memory the caller cannot access |
| 82 | + */ |
| 83 | +psa_status_t psa_its_set(psa_storage_uid_t aUid, |
| 84 | + uint32_t aDataLength, |
| 85 | + const void *aData, |
| 86 | + psa_storage_create_flags_t aCreateFlags); |
| 87 | + |
| 88 | +/** |
| 89 | + * \brief Retrieve the value associated with a provided uid |
| 90 | + * |
| 91 | + * \param[in] aUid The uid value |
| 92 | + * \param[in] aDataOffset The starting offset of the data requested |
| 93 | + * \param[in] aDataLength The amount of data requested (and the minimum allocated size of the `p_data` buffer) |
| 94 | + * \param[out] aData The buffer where the data will be placed upon successful completion |
| 95 | + * \param[out] aDataLengthOut The amount of data returned in the p_data buffer |
| 96 | + * |
| 97 | + * |
| 98 | + * \return A status indicating the success/failure of the operation |
| 99 | + * |
| 100 | + * \retval #PSA_SUCCESS The operation completed successfully |
| 101 | + * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided `uid` value was not found in the storage |
| 102 | + * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) |
| 103 | + * \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted |
| 104 | + * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_data`, `p_data_length`) |
| 105 | + * is invalid. For example is `NULL` or references memory the caller cannot access. |
| 106 | + * In addition, this can also happen if an invalid offset was provided. |
| 107 | + */ |
| 108 | +psa_status_t psa_its_get(psa_storage_uid_t aUid, |
| 109 | + uint32_t aDataOffset, |
| 110 | + uint32_t aDataLength, |
| 111 | + void *aData, |
| 112 | + size_t *aDataLengthOut); |
| 113 | + |
| 114 | +/** |
| 115 | + * \brief Retrieve the metadata about the provided uid |
| 116 | + * |
| 117 | + * \param[in] aUid The uid value |
| 118 | + * \param[out] aInfo A pointer to the `psa_storage_info_t` struct that will be populated with the metadata |
| 119 | + * |
| 120 | + * \return A status indicating the success/failure of the operation |
| 121 | + * |
| 122 | + * \retval #PSA_SUCCESS The operation completed successfully |
| 123 | + * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided uid value was not found in the storage |
| 124 | + * \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted |
| 125 | + * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_info`) |
| 126 | + * is invalid, for example is `NULL` or references memory the caller cannot access |
| 127 | + */ |
| 128 | +psa_status_t psa_its_get_info(psa_storage_uid_t aUid, |
| 129 | + struct psa_storage_info_t *aInfo); |
| 130 | + |
| 131 | +/** |
| 132 | + * \brief Remove the provided key and its associated data from the storage |
| 133 | + * |
| 134 | + * \param[in] aUid The uid value |
| 135 | + * |
| 136 | + * \return A status indicating the success/failure of the operation |
| 137 | + * |
| 138 | + * \retval #PSA_SUCCESS The operation completed successfully |
| 139 | + * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided key value was not found in the storage |
| 140 | + * \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided key value was created with PSA_STORAGE_FLAG_WRITE_ONCE |
| 141 | + * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) |
| 142 | + */ |
| 143 | +psa_status_t psa_its_remove(psa_storage_uid_t aUid); |
| 144 | + |
| 145 | +#ifdef __cplusplus |
| 146 | +} |
| 147 | +#endif |
| 148 | + |
| 149 | +#endif /* PSA_INTERNAL_TRUSTED_STORAGE_H__ */ |
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