Patrick Williams | 691668f | 2023-11-01 08:19:10 -0500 | [diff] [blame] | 1 | /* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later */ |
Andrew Jeffery | ef47e2f | 2023-07-20 09:53:19 +0930 | [diff] [blame] | 2 | #include "array.h" |
Andrew Jeffery | b0c1d20 | 2023-11-07 22:08:44 +1030 | [diff] [blame] | 3 | |
| 4 | #include <libpldm/base.h> |
| 5 | #include <libpldm/bios.h> |
| 6 | #include <libpldm/bios_table.h> |
| 7 | #include <libpldm/utils.h> |
| 8 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 9 | #include <assert.h> |
| 10 | #include <endian.h> |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 11 | #include <limits.h> |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 12 | #include <stdbool.h> |
| 13 | #include <stdint.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 17 | #define POINTER_CHECK(pointer) \ |
| 18 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 19 | if ((pointer) == NULL) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 20 | return PLDM_ERROR_INVALID_DATA; \ |
| 21 | } while (0) |
| 22 | |
| 23 | #define ATTR_TYPE_EXPECT(type, expected) \ |
| 24 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 25 | if ((type) != (expected) && (type) != ((expected) | 0x80)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 26 | return PLDM_ERROR_INVALID_DATA; \ |
| 27 | } while (0) |
| 28 | |
| 29 | #define BUFFER_SIZE_EXPECT(current_size, expected_size) \ |
| 30 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 31 | if ((current_size) < (expected_size)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 32 | return PLDM_ERROR_INVALID_LENGTH; \ |
| 33 | } while (0) |
| 34 | |
| 35 | #define MEMBER_SIZE(type, member) sizeof(((struct type *)0)->member) |
| 36 | |
| 37 | static void set_errmsg(const char **errmsg, const char *msg) |
| 38 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 39 | if (errmsg != NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 40 | *errmsg = msg; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 41 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 42 | } |
| 43 | |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 44 | static int get_bios_string_handle(uint16_t *val) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 45 | { |
| 46 | static uint16_t handle = 0; |
| 47 | assert(handle != UINT16_MAX); |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 48 | if (handle == UINT16_MAX) { |
| 49 | return PLDM_ERROR_INVALID_DATA; |
| 50 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 51 | |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 52 | *val = handle++; |
| 53 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 54 | } |
| 55 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 56 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 57 | size_t pldm_bios_table_string_entry_encode_length(uint16_t string_length) |
| 58 | { |
| 59 | return sizeof(struct pldm_bios_string_table_entry) - |
| 60 | MEMBER_SIZE(pldm_bios_string_table_entry, name) + string_length; |
| 61 | } |
| 62 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 63 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | e48fdd6 | 2024-06-25 00:36:20 +0930 | [diff] [blame] | 64 | int pldm_bios_table_string_entry_encode(void *entry, size_t entry_length, |
| 65 | const char *str, uint16_t str_length) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 66 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 67 | if (str_length == 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 68 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 69 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 70 | POINTER_CHECK(entry); |
| 71 | POINTER_CHECK(str); |
| 72 | size_t length = pldm_bios_table_string_entry_encode_length(str_length); |
| 73 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 74 | struct pldm_bios_string_table_entry *string_entry = entry; |
Andrew Jeffery | a873eca | 2023-06-26 17:25:37 +0930 | [diff] [blame] | 75 | uint16_t handle; |
| 76 | int rc = get_bios_string_handle(&handle); |
| 77 | if (rc != PLDM_SUCCESS) { |
| 78 | return rc; |
| 79 | } |
| 80 | string_entry->string_handle = htole16(handle); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 81 | string_entry->string_length = htole16(str_length); |
| 82 | memcpy(string_entry->name, str, str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 83 | return PLDM_SUCCESS; |
| 84 | } |
| 85 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 86 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 87 | uint16_t pldm_bios_table_string_entry_decode_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 88 | const struct pldm_bios_string_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 89 | { |
| 90 | return le16toh(entry->string_handle); |
| 91 | } |
| 92 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 93 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 94 | uint16_t pldm_bios_table_string_entry_decode_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 95 | const struct pldm_bios_string_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 96 | { |
| 97 | return le16toh(entry->string_length); |
| 98 | } |
| 99 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 100 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 8c37ab3 | 2024-06-25 15:34:27 +0930 | [diff] [blame] | 101 | int pldm_bios_table_string_entry_decode_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 102 | const struct pldm_bios_string_table_entry *entry, char *buffer, |
| 103 | size_t size) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 104 | { |
| 105 | POINTER_CHECK(entry); |
| 106 | POINTER_CHECK(buffer); |
Andrew Jeffery | 98c1e69 | 2023-06-14 14:41:19 +0930 | [diff] [blame] | 107 | if (size == 0) { |
| 108 | return PLDM_ERROR_INVALID_LENGTH; |
| 109 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 110 | size_t length = |
| 111 | pldm_bios_table_string_entry_decode_string_length(entry); |
| 112 | length = length < (size - 1) ? length : (size - 1); |
| 113 | memcpy(buffer, entry->name, length); |
| 114 | buffer[length] = 0; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 115 | return PLDM_SUCCESS; |
| 116 | } |
| 117 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 118 | static ssize_t string_table_entry_length(const void *table_entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 119 | { |
| 120 | const struct pldm_bios_string_table_entry *entry = table_entry; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 121 | size_t len = sizeof(*entry) - sizeof(entry->name) + |
| 122 | pldm_bios_table_string_entry_decode_string_length(entry); |
| 123 | if (len > SSIZE_MAX) { |
| 124 | return -1; |
| 125 | } |
| 126 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 127 | } |
| 128 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 129 | static int get_bios_attr_handle(uint16_t *val) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 130 | { |
| 131 | static uint16_t handle = 0; |
| 132 | assert(handle != UINT16_MAX); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 133 | if (handle == UINT16_MAX) { |
| 134 | return PLDM_ERROR_INVALID_DATA; |
| 135 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 136 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 137 | *val = handle++; |
| 138 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 139 | } |
| 140 | |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 141 | static int attr_table_entry_encode_header(void *entry, size_t length, |
| 142 | uint8_t attr_type, |
| 143 | uint16_t string_handle) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 144 | { |
| 145 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 146 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 147 | assert(sizeof(*attr_entry) <= length); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 148 | if (sizeof(*attr_entry) > length) { |
| 149 | return PLDM_ERROR_INVALID_LENGTH; |
| 150 | } |
| 151 | |
| 152 | uint16_t handle; |
| 153 | int rc = get_bios_attr_handle(&handle); |
| 154 | if (rc != PLDM_SUCCESS) { |
| 155 | return rc; |
| 156 | } |
| 157 | |
| 158 | attr_entry->attr_handle = htole16(handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 159 | attr_entry->attr_type = attr_type; |
| 160 | attr_entry->string_handle = htole16(string_handle); |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 161 | |
| 162 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 163 | } |
| 164 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 165 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 166 | uint16_t pldm_bios_table_attr_entry_decode_attribute_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 167 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 168 | { |
| 169 | return le16toh(entry->attr_handle); |
| 170 | } |
| 171 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 172 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 173 | uint8_t pldm_bios_table_attr_entry_decode_attribute_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 174 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 175 | { |
| 176 | return entry->attr_type; |
| 177 | } |
| 178 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 179 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 180 | uint16_t pldm_bios_table_attr_entry_decode_string_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 181 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 182 | { |
| 183 | return le16toh(entry->string_handle); |
| 184 | } |
| 185 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 186 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 187 | size_t pldm_bios_table_attr_entry_enum_encode_length(uint8_t pv_num, |
| 188 | uint8_t def_num) |
| 189 | { |
| 190 | return sizeof(struct pldm_bios_attr_table_entry) - |
| 191 | MEMBER_SIZE(pldm_bios_attr_table_entry, metadata) + |
| 192 | sizeof(pv_num) + pv_num * sizeof(uint16_t) + sizeof(def_num) + |
| 193 | def_num; |
| 194 | } |
| 195 | |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 196 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 7126b1d | 2024-06-25 15:48:34 +0930 | [diff] [blame] | 197 | int pldm_bios_table_attr_entry_enum_encode( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 198 | void *entry, size_t entry_length, |
| 199 | const struct pldm_bios_table_attr_entry_enum_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 200 | { |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 201 | POINTER_CHECK(entry); |
| 202 | POINTER_CHECK(info); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 203 | size_t length = pldm_bios_table_attr_entry_enum_encode_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 204 | info->pv_num, info->def_num); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 205 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 206 | uint8_t attr_type = info->read_only ? PLDM_BIOS_ENUMERATION_READ_ONLY : |
| 207 | PLDM_BIOS_ENUMERATION; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 208 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 209 | info->name_handle); |
| 210 | if (rc != PLDM_SUCCESS) { |
| 211 | return rc; |
| 212 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 213 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 214 | attr_entry->metadata[0] = info->pv_num; |
| 215 | uint16_t *pv_hdls = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 216 | (uint16_t *)(attr_entry->metadata + 1 /* sizeof(pv num) */); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 217 | size_t i; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 218 | for (i = 0; i < info->pv_num; i++) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 219 | pv_hdls[i] = htole16(info->pv_handle[i]); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 220 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 221 | attr_entry->metadata[1 + info->pv_num * sizeof(uint16_t)] = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 222 | info->def_num; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 223 | memcpy(attr_entry->metadata + 1 /* sizeof(pv num) */ + |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 224 | info->pv_num * sizeof(uint16_t) + 1 /* sizeof(def num)*/, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 225 | info->def_index, info->def_num); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 226 | return PLDM_SUCCESS; |
| 227 | } |
| 228 | |
| 229 | #define ATTR_TYPE_EXPECT(type, expected) \ |
| 230 | do { \ |
Andrew Jeffery | 0a05b12 | 2023-04-05 14:03:36 +0930 | [diff] [blame] | 231 | if ((type) != (expected) && (type) != ((expected) | 0x80)) \ |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 232 | return PLDM_ERROR_INVALID_DATA; \ |
| 233 | } while (0) |
| 234 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 235 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | b06882f | 2024-06-25 15:52:02 +0930 | [diff] [blame] | 236 | int pldm_bios_table_attr_entry_enum_decode_pv_num( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 237 | const struct pldm_bios_attr_table_entry *entry, uint8_t *pv_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 238 | { |
| 239 | POINTER_CHECK(entry); |
| 240 | POINTER_CHECK(pv_num); |
| 241 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 242 | *pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 243 | return PLDM_SUCCESS; |
| 244 | } |
| 245 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 246 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 46673f4 | 2024-06-25 16:02:25 +0930 | [diff] [blame] | 247 | int pldm_bios_table_attr_entry_enum_decode_def_num( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 248 | const struct pldm_bios_attr_table_entry *entry, uint8_t *def_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 249 | { |
Andrew Jeffery | 46673f4 | 2024-06-25 16:02:25 +0930 | [diff] [blame] | 250 | uint8_t pv_num; |
| 251 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 252 | POINTER_CHECK(entry); |
| 253 | POINTER_CHECK(def_num); |
| 254 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
Andrew Jeffery | 46673f4 | 2024-06-25 16:02:25 +0930 | [diff] [blame] | 255 | pv_num = entry->metadata[0]; |
| 256 | *def_num = entry->metadata[sizeof(uint8_t) + sizeof(uint16_t) * pv_num]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 257 | return PLDM_SUCCESS; |
| 258 | } |
| 259 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 260 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 82b4d3b | 2024-06-25 16:22:36 +0930 | [diff] [blame] | 261 | int pldm_bios_table_attr_entry_enum_decode_pv_hdls( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 262 | const struct pldm_bios_attr_table_entry *entry, uint16_t *pv_hdls, |
| 263 | uint8_t pv_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 264 | { |
| 265 | POINTER_CHECK(entry); |
| 266 | POINTER_CHECK(pv_hdls); |
| 267 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_ENUMERATION); |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 268 | uint8_t num = entry->metadata[0]; |
| 269 | num = num < pv_num ? num : pv_num; |
| 270 | size_t i; |
| 271 | for (i = 0; i < num; i++) { |
| 272 | uint16_t *hdl = (uint16_t *)(entry->metadata + sizeof(uint8_t) + |
| 273 | i * sizeof(uint16_t)); |
| 274 | pv_hdls[i] = le16toh(*hdl); |
| 275 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 276 | return PLDM_SUCCESS; |
| 277 | } |
| 278 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 279 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 280 | uint8_t pldm_bios_table_attr_entry_enum_decode_def_indices( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 281 | const struct pldm_bios_attr_table_entry *entry, uint8_t *def_indices, |
| 282 | uint8_t def_num) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 283 | { |
Andrew Jeffery | 46673f4 | 2024-06-25 16:02:25 +0930 | [diff] [blame] | 284 | uint8_t num = 0; |
| 285 | |
| 286 | /* TODO: Fix the API to propagate errors */ |
| 287 | pldm_bios_table_attr_entry_enum_decode_def_num(entry, &num); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 288 | num = num < def_num ? num : def_num; |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 289 | uint8_t pv_num = entry->metadata[0]; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 290 | const uint8_t *p = entry->metadata + |
| 291 | sizeof(uint8_t) /* number of possible values*/ |
| 292 | + pv_num * sizeof(uint16_t) /* possible values */ |
| 293 | + sizeof(uint8_t); /* number of default values */ |
| 294 | memcpy(def_indices, p, num); |
| 295 | return num; |
| 296 | } |
| 297 | |
| 298 | /** @brief Get length of an enum attribute entry |
| 299 | */ |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 300 | static ssize_t attr_table_entry_length_enum(const void *arg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 301 | { |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 302 | const struct pldm_bios_attr_table_entry *entry = arg; |
| 303 | uint8_t pv_num = entry->metadata[0]; |
Andrew Jeffery | 46673f4 | 2024-06-25 16:02:25 +0930 | [diff] [blame] | 304 | uint8_t def_num = 0; |
| 305 | |
| 306 | /* TODO: Fix the API to propagate errors */ |
| 307 | pldm_bios_table_attr_entry_enum_decode_def_num(entry, &def_num); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 308 | size_t len = |
| 309 | pldm_bios_table_attr_entry_enum_encode_length(pv_num, def_num); |
| 310 | if (len > SSIZE_MAX) { |
| 311 | return -1; |
| 312 | } |
| 313 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | struct attr_table_string_entry_fields { |
| 317 | uint8_t string_type; |
| 318 | uint16_t min_length; |
| 319 | uint16_t max_length; |
| 320 | uint16_t def_length; |
| 321 | uint8_t def_string[1]; |
| 322 | } __attribute__((packed)); |
| 323 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 324 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 325 | size_t pldm_bios_table_attr_entry_string_encode_length(uint16_t def_str_len) |
| 326 | { |
| 327 | return sizeof(struct pldm_bios_attr_table_entry) - |
| 328 | MEMBER_SIZE(pldm_bios_attr_table_entry, metadata) + |
| 329 | sizeof(struct attr_table_string_entry_fields) - |
| 330 | MEMBER_SIZE(attr_table_string_entry_fields, def_string) + |
| 331 | def_str_len; |
| 332 | } |
| 333 | |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 334 | #define PLDM_STRING_TYPE_MAX 5 |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 335 | #define PLDM_STRING_TYPE_VENDOR 0xff |
| 336 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 337 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 338 | int pldm_bios_table_attr_entry_string_info_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 339 | const struct pldm_bios_table_attr_entry_string_info *info, |
| 340 | const char **errmsg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 341 | { |
| 342 | if (info->min_length > info->max_length) { |
| 343 | set_errmsg(errmsg, "MinimumStingLength should not be greater " |
| 344 | "than MaximumStringLength"); |
| 345 | return PLDM_ERROR_INVALID_DATA; |
| 346 | } |
| 347 | if (info->min_length == info->max_length && |
| 348 | info->def_length != info->min_length) { |
| 349 | set_errmsg(errmsg, "Wrong DefaultStringLength"); |
| 350 | return PLDM_ERROR_INVALID_DATA; |
| 351 | } |
| 352 | if (info->def_length > info->max_length || |
| 353 | info->def_length < info->min_length) { |
| 354 | set_errmsg(errmsg, "Wrong DefaultStringLength"); |
| 355 | return PLDM_ERROR_INVALID_DATA; |
| 356 | } |
| 357 | if (info->string_type > PLDM_STRING_TYPE_MAX && |
| 358 | info->string_type != PLDM_STRING_TYPE_VENDOR) { |
| 359 | set_errmsg(errmsg, "Wrong StringType"); |
| 360 | return PLDM_ERROR_INVALID_DATA; |
| 361 | } |
Andrew Jeffery | df02e36 | 2023-06-14 14:52:25 +0930 | [diff] [blame] | 362 | if (info->def_string && info->def_length != strlen(info->def_string)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 363 | set_errmsg(errmsg, "Length of DefaultString should be equal to " |
| 364 | "DefaultStringLength"); |
| 365 | return PLDM_ERROR_INVALID_DATA; |
| 366 | } |
| 367 | |
| 368 | return PLDM_SUCCESS; |
| 369 | } |
| 370 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 371 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | f6be493 | 2024-06-25 16:44:06 +0930 | [diff] [blame] | 372 | int pldm_bios_table_attr_entry_string_encode( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 373 | void *entry, size_t entry_length, |
| 374 | const struct pldm_bios_table_attr_entry_string_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 375 | { |
| 376 | POINTER_CHECK(entry); |
| 377 | POINTER_CHECK(info); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 378 | size_t length = pldm_bios_table_attr_entry_string_encode_length( |
| 379 | info->def_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 380 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 381 | if (pldm_bios_table_attr_entry_string_info_check(info, NULL) != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 382 | PLDM_SUCCESS) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 383 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 384 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 385 | uint8_t attr_type = info->read_only ? PLDM_BIOS_STRING_READ_ONLY : |
| 386 | PLDM_BIOS_STRING; |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 387 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 388 | info->name_handle); |
| 389 | if (rc != PLDM_SUCCESS) { |
| 390 | return rc; |
| 391 | } |
Andrew Jeffery | 6409c8a | 2023-06-14 11:38:31 +0930 | [diff] [blame] | 392 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 393 | struct attr_table_string_entry_fields *attr_fields = |
| 394 | (struct attr_table_string_entry_fields *)attr_entry->metadata; |
| 395 | attr_fields->string_type = info->string_type; |
| 396 | attr_fields->min_length = htole16(info->min_length); |
| 397 | attr_fields->max_length = htole16(info->max_length); |
| 398 | attr_fields->def_length = htole16(info->def_length); |
| 399 | if (info->def_length != 0 && info->def_string != NULL) { |
| 400 | memcpy(attr_fields->def_string, info->def_string, |
| 401 | info->def_length); |
| 402 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 403 | return PLDM_SUCCESS; |
| 404 | } |
| 405 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 406 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | c668ffc | 2024-06-25 16:50:08 +0930 | [diff] [blame^] | 407 | int pldm_bios_table_attr_entry_string_decode_def_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 408 | const struct pldm_bios_attr_table_entry *entry, |
| 409 | uint16_t *def_string_length) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 410 | { |
| 411 | POINTER_CHECK(entry); |
| 412 | POINTER_CHECK(def_string_length); |
| 413 | ATTR_TYPE_EXPECT(entry->attr_type, PLDM_BIOS_STRING); |
Andrew Jeffery | c668ffc | 2024-06-25 16:50:08 +0930 | [diff] [blame^] | 414 | struct attr_table_string_entry_fields *fields = |
| 415 | (struct attr_table_string_entry_fields *)entry->metadata; |
| 416 | *def_string_length = le16toh(fields->def_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 417 | return PLDM_SUCCESS; |
| 418 | } |
| 419 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 420 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 421 | uint8_t pldm_bios_table_attr_entry_string_decode_string_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 422 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 423 | { |
| 424 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 425 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 426 | return fields->string_type; |
| 427 | } |
| 428 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 429 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 430 | uint16_t pldm_bios_table_attr_entry_string_decode_max_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 431 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 432 | { |
| 433 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 434 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 435 | return le16toh(fields->max_length); |
| 436 | } |
| 437 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 438 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 439 | uint16_t pldm_bios_table_attr_entry_string_decode_min_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 440 | const struct pldm_bios_attr_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 441 | { |
| 442 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 443 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 444 | return le16toh(fields->min_length); |
| 445 | } |
| 446 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 447 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 448 | uint16_t pldm_bios_table_attr_entry_string_decode_def_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 449 | const struct pldm_bios_attr_table_entry *entry, char *buffer, |
| 450 | size_t size) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 451 | { |
Andrew Jeffery | c668ffc | 2024-06-25 16:50:08 +0930 | [diff] [blame^] | 452 | uint16_t length = 0; |
| 453 | int rc; |
| 454 | |
| 455 | if (!entry || !buffer || size == 0) { |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | /* TODO: Rework the API to propagate the error */ |
| 460 | rc = pldm_bios_table_attr_entry_string_decode_def_string_length( |
| 461 | entry, &length); |
| 462 | if (rc != PLDM_SUCCESS) { |
| 463 | return 0; |
| 464 | } |
| 465 | |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 466 | length = length < (size - 1) ? length : (size - 1); |
| 467 | struct attr_table_string_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 468 | (struct attr_table_string_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 469 | memcpy(buffer, fields->def_string, length); |
| 470 | buffer[length] = 0; |
| 471 | return length; |
| 472 | } |
| 473 | |
| 474 | /** @brief Get length of a string attribute entry |
| 475 | */ |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 476 | static ssize_t attr_table_entry_length_string(const void *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 477 | { |
Andrew Jeffery | c668ffc | 2024-06-25 16:50:08 +0930 | [diff] [blame^] | 478 | uint16_t def_str_len = 0; |
| 479 | |
| 480 | /* TODO: Rework the API to propagate the error */ |
| 481 | pldm_bios_table_attr_entry_string_decode_def_string_length( |
| 482 | entry, &def_str_len); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 483 | size_t len = |
| 484 | pldm_bios_table_attr_entry_string_encode_length(def_str_len); |
| 485 | if (len > SSIZE_MAX) { |
| 486 | return -1; |
| 487 | } |
| 488 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | struct attr_table_integer_entry_fields { |
| 492 | uint64_t lower_bound; |
| 493 | uint64_t upper_bound; |
| 494 | uint32_t scalar_increment; |
| 495 | uint64_t default_value; |
| 496 | } __attribute__((packed)); |
| 497 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 498 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 319304f | 2023-04-05 13:53:18 +0930 | [diff] [blame] | 499 | size_t pldm_bios_table_attr_entry_integer_encode_length(void) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 500 | { |
| 501 | return sizeof(struct pldm_bios_attr_table_entry) - 1 + |
| 502 | sizeof(struct attr_table_integer_entry_fields); |
| 503 | } |
| 504 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 505 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 506 | int pldm_bios_table_attr_entry_integer_info_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 507 | const struct pldm_bios_table_attr_entry_integer_info *info, |
| 508 | const char **errmsg) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 509 | { |
| 510 | if (info->lower_bound == info->upper_bound) { |
| 511 | if (info->default_value != info->lower_bound) { |
| 512 | set_errmsg(errmsg, "Wrong DefaultValue"); |
| 513 | return PLDM_ERROR_INVALID_DATA; |
| 514 | } |
| 515 | if (info->scalar_increment != 0) { |
| 516 | set_errmsg(errmsg, "Wrong ScalarIncrement"); |
| 517 | return PLDM_ERROR_INVALID_DATA; |
| 518 | } |
| 519 | return PLDM_SUCCESS; |
| 520 | } |
| 521 | if (info->lower_bound > info->upper_bound) { |
| 522 | set_errmsg(errmsg, |
| 523 | "LowerBound should not be greater than UpperBound"); |
| 524 | return PLDM_ERROR_INVALID_DATA; |
| 525 | } |
| 526 | if (info->default_value > info->upper_bound || |
| 527 | info->default_value < info->lower_bound) { |
| 528 | set_errmsg(errmsg, "Wrong DefaultValue"); |
| 529 | return PLDM_ERROR_INVALID_DATA; |
| 530 | } |
| 531 | if (info->scalar_increment == 0) { |
| 532 | set_errmsg(errmsg, "ScalarIncrement should not be zero when " |
| 533 | "lower_bound != upper_bound"); |
| 534 | return PLDM_ERROR_INVALID_DATA; |
| 535 | } |
| 536 | if ((info->default_value - info->lower_bound) % |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 537 | info->scalar_increment != |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 538 | 0) { |
| 539 | set_errmsg(errmsg, "Wrong DefaultValue or ScalarIncrement"); |
| 540 | return PLDM_ERROR_INVALID_DATA; |
| 541 | } |
| 542 | return PLDM_SUCCESS; |
| 543 | } |
| 544 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 545 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 546 | int pldm_bios_table_attr_entry_integer_encode_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 547 | void *entry, size_t entry_length, |
| 548 | const struct pldm_bios_table_attr_entry_integer_info *info) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 549 | { |
| 550 | POINTER_CHECK(entry); |
| 551 | POINTER_CHECK(info); |
| 552 | size_t length = pldm_bios_table_attr_entry_integer_encode_length(); |
| 553 | BUFFER_SIZE_EXPECT(entry_length, length); |
| 554 | if (pldm_bios_table_attr_entry_integer_info_check(info, NULL) != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 555 | PLDM_SUCCESS) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 556 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 557 | } |
Andrew Jeffery | fe0f01d | 2023-06-27 11:51:58 +0930 | [diff] [blame] | 558 | uint8_t attr_type = info->read_only ? PLDM_BIOS_INTEGER_READ_ONLY : |
| 559 | PLDM_BIOS_INTEGER; |
| 560 | int rc = attr_table_entry_encode_header(entry, entry_length, attr_type, |
| 561 | info->name_handle); |
| 562 | if (rc != PLDM_SUCCESS) { |
| 563 | return rc; |
| 564 | } |
| 565 | struct pldm_bios_attr_table_entry *attr_entry = entry; |
| 566 | struct attr_table_integer_entry_fields *attr_fields = |
| 567 | (struct attr_table_integer_entry_fields *)attr_entry->metadata; |
| 568 | attr_fields->lower_bound = htole64(info->lower_bound); |
| 569 | attr_fields->upper_bound = htole64(info->upper_bound); |
| 570 | attr_fields->scalar_increment = htole32(info->scalar_increment); |
| 571 | attr_fields->default_value = htole64(info->default_value); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 572 | return PLDM_SUCCESS; |
| 573 | } |
| 574 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 575 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 576 | void pldm_bios_table_attr_entry_integer_decode( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 577 | const struct pldm_bios_attr_table_entry *entry, uint64_t *lower, |
| 578 | uint64_t *upper, uint32_t *scalar, uint64_t *def) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 579 | { |
| 580 | struct attr_table_integer_entry_fields *fields = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 581 | (struct attr_table_integer_entry_fields *)entry->metadata; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 582 | *lower = le64toh(fields->lower_bound); |
| 583 | *upper = le64toh(fields->upper_bound); |
| 584 | *scalar = le32toh(fields->scalar_increment); |
| 585 | *def = le64toh(fields->default_value); |
| 586 | } |
| 587 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 588 | static ssize_t attr_table_entry_length_integer(const void *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 589 | { |
| 590 | (void)entry; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 591 | size_t len = pldm_bios_table_attr_entry_integer_encode_length(); |
| 592 | if (len > SSIZE_MAX) { |
| 593 | return -1; |
| 594 | } |
| 595 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | struct table_entry_length { |
| 599 | uint8_t attr_type; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 600 | ssize_t (*entry_length_handler)(const void *); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 601 | }; |
| 602 | |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 603 | static const struct table_entry_length * |
| 604 | find_table_entry_length_by_type(uint8_t attr_type, |
| 605 | const struct table_entry_length *handlers, |
| 606 | size_t count) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 607 | { |
| 608 | size_t i; |
| 609 | for (i = 0; i < count; i++) { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 610 | if (attr_type == handlers[i].attr_type) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 611 | return &handlers[i]; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 612 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 613 | } |
| 614 | return NULL; |
| 615 | } |
| 616 | |
| 617 | static const struct table_entry_length attr_table_entries[] = { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 618 | { .attr_type = PLDM_BIOS_ENUMERATION, |
| 619 | .entry_length_handler = attr_table_entry_length_enum }, |
| 620 | { .attr_type = PLDM_BIOS_ENUMERATION_READ_ONLY, |
| 621 | .entry_length_handler = attr_table_entry_length_enum }, |
| 622 | { .attr_type = PLDM_BIOS_STRING, |
| 623 | .entry_length_handler = attr_table_entry_length_string }, |
| 624 | { .attr_type = PLDM_BIOS_STRING_READ_ONLY, |
| 625 | .entry_length_handler = attr_table_entry_length_string }, |
| 626 | { .attr_type = PLDM_BIOS_INTEGER, |
| 627 | .entry_length_handler = attr_table_entry_length_integer }, |
| 628 | { .attr_type = PLDM_BIOS_INTEGER_READ_ONLY, |
| 629 | .entry_length_handler = attr_table_entry_length_integer }, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 630 | }; |
| 631 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 632 | static ssize_t attr_table_entry_length(const void *table_entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 633 | { |
| 634 | const struct pldm_bios_attr_table_entry *entry = table_entry; |
| 635 | const struct table_entry_length *attr_table_entry = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 636 | find_table_entry_length_by_type(entry->attr_type, |
| 637 | attr_table_entries, |
| 638 | ARRAY_SIZE(attr_table_entries)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 639 | assert(attr_table_entry != NULL); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 640 | if (!attr_table_entry) { |
| 641 | return -1; |
| 642 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 643 | assert(attr_table_entry->entry_length_handler != NULL); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 644 | if (!attr_table_entry->entry_length_handler) { |
| 645 | return -1; |
| 646 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 647 | |
| 648 | return attr_table_entry->entry_length_handler(entry); |
| 649 | } |
| 650 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 651 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 652 | uint16_t pldm_bios_table_attr_value_entry_decode_attribute_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 653 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 654 | { |
| 655 | return le16toh(entry->attr_handle); |
| 656 | } |
| 657 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 658 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 659 | uint8_t pldm_bios_table_attr_value_entry_decode_attribute_type( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 660 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 661 | { |
| 662 | return entry->attr_type; |
| 663 | } |
| 664 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 665 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 666 | size_t pldm_bios_table_attr_value_entry_encode_enum_length(uint8_t count) |
| 667 | { |
| 668 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 669 | sizeof(count) + count; |
| 670 | } |
| 671 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 672 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 673 | uint8_t pldm_bios_table_attr_value_entry_enum_decode_number( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 674 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 675 | { |
| 676 | return entry->value[0]; |
| 677 | } |
| 678 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 679 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 680 | uint8_t pldm_bios_table_attr_value_entry_enum_decode_handles( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 681 | const struct pldm_bios_attr_val_table_entry *entry, uint8_t *handles, |
| 682 | uint8_t number) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 683 | { |
| 684 | uint8_t curr_num = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 685 | pldm_bios_table_attr_value_entry_enum_decode_number(entry); |
Archana Kakani | b9d951f | 2023-10-17 05:47:58 -0500 | [diff] [blame] | 686 | curr_num = number < curr_num ? number : curr_num; |
| 687 | memcpy(handles, &entry->value[1], curr_num); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 688 | |
Archana Kakani | b9d951f | 2023-10-17 05:47:58 -0500 | [diff] [blame] | 689 | return curr_num; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 690 | } |
| 691 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 692 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 693 | int pldm_bios_table_attr_value_entry_encode_enum_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 694 | void *entry, size_t entry_length, uint16_t attr_handle, |
Andrew Jeffery | 7aeb7ed | 2023-06-27 13:13:36 +0930 | [diff] [blame] | 695 | uint8_t attr_type, uint8_t count, const uint8_t *handles) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 696 | { |
| 697 | POINTER_CHECK(entry); |
Andrew Jeffery | 7aeb7ed | 2023-06-27 13:13:36 +0930 | [diff] [blame] | 698 | POINTER_CHECK(handles); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 699 | if (count != 0 && handles == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 700 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 701 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 702 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_ENUMERATION); |
| 703 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 704 | pldm_bios_table_attr_value_entry_encode_enum_length(count); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 705 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 7aeb7ed | 2023-06-27 13:13:36 +0930 | [diff] [blame] | 706 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 707 | table_entry->attr_handle = htole16(attr_handle); |
| 708 | table_entry->attr_type = attr_type; |
| 709 | table_entry->value[0] = count; |
| 710 | if (count != 0) { |
| 711 | memcpy(&table_entry->value[1], handles, count); |
| 712 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 713 | return PLDM_SUCCESS; |
| 714 | } |
| 715 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 716 | static ssize_t attr_value_table_entry_length_enum(const void *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 717 | { |
| 718 | uint8_t number = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 719 | pldm_bios_table_attr_value_entry_enum_decode_number(entry); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 720 | size_t len = |
| 721 | pldm_bios_table_attr_value_entry_encode_enum_length(number); |
| 722 | if (len > SSIZE_MAX) { |
| 723 | return -1; |
| 724 | } |
| 725 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 726 | } |
| 727 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 728 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 729 | size_t |
| 730 | pldm_bios_table_attr_value_entry_encode_string_length(uint16_t string_length) |
| 731 | { |
| 732 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 733 | sizeof(string_length) + string_length; |
| 734 | } |
| 735 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 736 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 737 | uint16_t pldm_bios_table_attr_value_entry_string_decode_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 738 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 739 | { |
| 740 | uint16_t str_length = 0; |
| 741 | memcpy(&str_length, entry->value, sizeof(str_length)); |
| 742 | return le16toh(str_length); |
| 743 | } |
| 744 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 745 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 746 | void pldm_bios_table_attr_value_entry_string_decode_string( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 747 | const struct pldm_bios_attr_val_table_entry *entry, |
| 748 | struct variable_field *current_string) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 749 | { |
| 750 | current_string->length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 751 | pldm_bios_table_attr_value_entry_string_decode_length(entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 752 | current_string->ptr = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 753 | entry->value + sizeof(uint16_t); // sizeof(CurrentStringLength) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 754 | } |
| 755 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 756 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 757 | int pldm_bios_table_attr_value_entry_encode_string_check( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 758 | void *entry, size_t entry_length, uint16_t attr_handle, |
| 759 | uint8_t attr_type, uint16_t str_length, const char *str) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 760 | { |
| 761 | POINTER_CHECK(entry); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 762 | if (str_length != 0 && str == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 763 | return PLDM_ERROR_INVALID_DATA; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 764 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 765 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_STRING); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 766 | size_t length = pldm_bios_table_attr_value_entry_encode_string_length( |
| 767 | str_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 768 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 2d66393 | 2023-06-27 14:19:15 +0930 | [diff] [blame] | 769 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 770 | table_entry->attr_handle = htole16(attr_handle); |
| 771 | table_entry->attr_type = attr_type; |
| 772 | if (str_length != 0) { |
| 773 | memcpy(table_entry->value + sizeof(str_length), str, |
| 774 | str_length); |
| 775 | } |
| 776 | str_length = htole16(str_length); |
| 777 | memcpy(table_entry->value, &str_length, sizeof(str_length)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 778 | return PLDM_SUCCESS; |
| 779 | } |
| 780 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 781 | static ssize_t attr_value_table_entry_length_string(const void *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 782 | { |
| 783 | uint16_t str_length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 784 | pldm_bios_table_attr_value_entry_string_decode_length(entry); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 785 | size_t len = pldm_bios_table_attr_value_entry_encode_string_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 786 | str_length); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 787 | if (len > SSIZE_MAX) { |
| 788 | return -1; |
| 789 | } |
| 790 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 791 | } |
| 792 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 793 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 319304f | 2023-04-05 13:53:18 +0930 | [diff] [blame] | 794 | size_t pldm_bios_table_attr_value_entry_encode_integer_length(void) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 795 | { |
| 796 | return sizeof(struct pldm_bios_attr_val_table_entry) - 1 + |
| 797 | sizeof(uint64_t); |
| 798 | } |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 799 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 800 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 801 | int pldm_bios_table_attr_value_entry_encode_integer_check(void *entry, |
| 802 | size_t entry_length, |
| 803 | uint16_t attr_handle, |
| 804 | uint8_t attr_type, |
| 805 | uint64_t cv) |
| 806 | { |
| 807 | POINTER_CHECK(entry); |
| 808 | size_t length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 809 | pldm_bios_table_attr_value_entry_encode_integer_length(); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 810 | ATTR_TYPE_EXPECT(attr_type, PLDM_BIOS_INTEGER); |
| 811 | BUFFER_SIZE_EXPECT(entry_length, length); |
Andrew Jeffery | 0088a6a | 2023-06-27 15:06:45 +0930 | [diff] [blame] | 812 | struct pldm_bios_attr_val_table_entry *table_entry = entry; |
| 813 | table_entry->attr_handle = htole16(attr_handle); |
| 814 | table_entry->attr_type = attr_type; |
| 815 | cv = htole64(cv); |
| 816 | memcpy(table_entry->value, &cv, sizeof(uint64_t)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 817 | return PLDM_SUCCESS; |
| 818 | } |
| 819 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 820 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 821 | uint64_t pldm_bios_table_attr_value_entry_integer_decode_cv( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 822 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 823 | { |
| 824 | uint64_t cv = 0; |
| 825 | memcpy(&cv, entry->value, sizeof(cv)); |
| 826 | cv = le64toh(cv); |
| 827 | return cv; |
| 828 | } |
| 829 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 830 | static ssize_t attr_value_table_entry_length_integer(const void *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 831 | { |
| 832 | (void)entry; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 833 | size_t len = pldm_bios_table_attr_value_entry_encode_integer_length(); |
| 834 | if (len > SSIZE_MAX) { |
| 835 | return -1; |
| 836 | } |
| 837 | return (ssize_t)len; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | static const struct table_entry_length attr_value_table_entries[] = { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 841 | { .attr_type = PLDM_BIOS_ENUMERATION, |
| 842 | .entry_length_handler = attr_value_table_entry_length_enum }, |
| 843 | { .attr_type = PLDM_BIOS_ENUMERATION_READ_ONLY, |
| 844 | .entry_length_handler = attr_value_table_entry_length_enum }, |
| 845 | { .attr_type = PLDM_BIOS_STRING, |
| 846 | .entry_length_handler = attr_value_table_entry_length_string }, |
| 847 | { .attr_type = PLDM_BIOS_STRING_READ_ONLY, |
| 848 | .entry_length_handler = attr_value_table_entry_length_string }, |
| 849 | { .attr_type = PLDM_BIOS_INTEGER, |
| 850 | .entry_length_handler = attr_value_table_entry_length_integer }, |
| 851 | { .attr_type = PLDM_BIOS_INTEGER_READ_ONLY, |
| 852 | .entry_length_handler = attr_value_table_entry_length_integer }, |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 853 | }; |
| 854 | |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 855 | static ssize_t attr_value_table_entry_length(const void *table_entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 856 | { |
| 857 | const struct pldm_bios_attr_val_table_entry *entry = table_entry; |
| 858 | const struct table_entry_length *entry_length = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 859 | find_table_entry_length_by_type( |
| 860 | entry->attr_type, attr_value_table_entries, |
| 861 | ARRAY_SIZE(attr_value_table_entries)); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 862 | assert(entry_length != NULL); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 863 | if (!entry_length) { |
| 864 | return -1; |
| 865 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 866 | assert(entry_length->entry_length_handler != NULL); |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 867 | if (!entry_length->entry_length_handler) { |
| 868 | return -1; |
| 869 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 870 | |
| 871 | return entry_length->entry_length_handler(entry); |
| 872 | } |
| 873 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 874 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 875 | size_t pldm_bios_table_attr_value_entry_length( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 876 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 877 | { |
| 878 | return attr_value_table_entry_length(entry); |
| 879 | } |
| 880 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 881 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 882 | uint16_t pldm_bios_table_attr_value_entry_decode_handle( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 883 | const struct pldm_bios_attr_val_table_entry *entry) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 884 | { |
| 885 | return le16toh(entry->attr_handle); |
| 886 | } |
| 887 | |
| 888 | static size_t pad_size_get(size_t size_without_pad) |
| 889 | { |
| 890 | return ((size_without_pad % 4) ? (4 - size_without_pad % 4) : 0); |
| 891 | } |
| 892 | |
| 893 | static uint8_t *pad_append(uint8_t *table_end, size_t pad_size) |
| 894 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 895 | while (pad_size--) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 896 | *table_end++ = 0; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 897 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 898 | |
| 899 | return table_end; |
| 900 | } |
| 901 | |
| 902 | static uint8_t *checksum_append(uint8_t *table_end, uint32_t checksum) |
| 903 | { |
| 904 | checksum = htole32(checksum); |
| 905 | memcpy(table_end, &checksum, sizeof(checksum)); |
| 906 | |
| 907 | return table_end + sizeof(checksum); |
| 908 | } |
| 909 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 910 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 911 | size_t pldm_bios_table_pad_checksum_size(size_t size_without_pad) |
| 912 | { |
| 913 | size_t size = pad_size_get(size_without_pad) + |
| 914 | sizeof(uint32_t) /*sizeof(checksum)*/; |
| 915 | return size; |
| 916 | } |
| 917 | |
Andrew Jeffery | 1264fbd | 2023-07-07 09:44:07 +0930 | [diff] [blame] | 918 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 044ee19 | 2023-06-28 11:26:00 +0930 | [diff] [blame] | 919 | int pldm_bios_table_append_pad_checksum_check(void *table, size_t capacity, |
| 920 | size_t *size) |
| 921 | { |
| 922 | if (!table || !size) { |
| 923 | return PLDM_ERROR_INVALID_DATA; |
| 924 | } |
| 925 | |
| 926 | size_t pad_checksum_size = pldm_bios_table_pad_checksum_size(*size); |
| 927 | size_t total_length = *size + pad_checksum_size; |
Andrew Jeffery | 044ee19 | 2023-06-28 11:26:00 +0930 | [diff] [blame] | 928 | if (capacity < total_length) { |
| 929 | return PLDM_ERROR_INVALID_LENGTH; |
| 930 | } |
| 931 | |
| 932 | uint8_t *table_end = (uint8_t *)table + *size; |
| 933 | size_t pad_size = pad_size_get(*size); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 934 | table_end = pad_append(table_end, pad_size); |
| 935 | |
Andrew Jeffery | 044ee19 | 2023-06-28 11:26:00 +0930 | [diff] [blame] | 936 | uint32_t checksum = crc32(table, *size + pad_size); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 937 | checksum_append(table_end, checksum); |
Andrew Jeffery | 044ee19 | 2023-06-28 11:26:00 +0930 | [diff] [blame] | 938 | *size = total_length; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 939 | |
Andrew Jeffery | 044ee19 | 2023-06-28 11:26:00 +0930 | [diff] [blame] | 940 | return PLDM_SUCCESS; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | struct pldm_bios_table_iter { |
| 944 | const uint8_t *table_data; |
| 945 | size_t table_len; |
| 946 | size_t current_pos; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 947 | ssize_t (*entry_length_handler)(const void *table_entry); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 948 | }; |
| 949 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 950 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 951 | struct pldm_bios_table_iter * |
| 952 | pldm_bios_table_iter_create(const void *table, size_t length, |
| 953 | enum pldm_bios_table_types type) |
| 954 | { |
| 955 | struct pldm_bios_table_iter *iter = malloc(sizeof(*iter)); |
| 956 | assert(iter != NULL); |
Andrew Jeffery | 757e81a | 2023-06-28 12:15:59 +0930 | [diff] [blame] | 957 | if (!iter) { |
| 958 | return NULL; |
| 959 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 960 | iter->table_data = table; |
| 961 | iter->table_len = length; |
| 962 | iter->current_pos = 0; |
| 963 | iter->entry_length_handler = NULL; |
| 964 | switch (type) { |
| 965 | case PLDM_BIOS_STRING_TABLE: |
| 966 | iter->entry_length_handler = string_table_entry_length; |
| 967 | break; |
| 968 | case PLDM_BIOS_ATTR_TABLE: |
| 969 | iter->entry_length_handler = attr_table_entry_length; |
| 970 | break; |
| 971 | case PLDM_BIOS_ATTR_VAL_TABLE: |
| 972 | iter->entry_length_handler = attr_value_table_entry_length; |
| 973 | break; |
| 974 | } |
| 975 | |
| 976 | return iter; |
| 977 | } |
| 978 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 979 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 980 | void pldm_bios_table_iter_free(struct pldm_bios_table_iter *iter) |
| 981 | { |
| 982 | free(iter); |
| 983 | } |
| 984 | |
| 985 | #define pad_and_check_max 7 |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 986 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 987 | bool pldm_bios_table_iter_is_end(const struct pldm_bios_table_iter *iter) |
| 988 | { |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 989 | ssize_t len; |
| 990 | |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 991 | if (iter->table_len - iter->current_pos <= pad_and_check_max) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 992 | return true; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 993 | } |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 994 | |
| 995 | len = iter->entry_length_handler(iter->table_data + iter->current_pos); |
| 996 | |
| 997 | return len < 0; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 998 | } |
| 999 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1000 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1001 | void pldm_bios_table_iter_next(struct pldm_bios_table_iter *iter) |
| 1002 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1003 | if (pldm_bios_table_iter_is_end(iter)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1004 | return; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1005 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1006 | const void *entry = iter->table_data + iter->current_pos; |
Andrew Jeffery | 73d9176 | 2023-06-28 12:19:19 +0930 | [diff] [blame] | 1007 | ssize_t rc = iter->entry_length_handler(entry); |
| 1008 | /* Prevent bad behaviour by acting as if we've hit the end of the iterator */ |
| 1009 | if (rc < 0) { |
| 1010 | return; |
| 1011 | } |
| 1012 | iter->current_pos += rc; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1013 | } |
| 1014 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1015 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1016 | const void *pldm_bios_table_iter_value(struct pldm_bios_table_iter *iter) |
| 1017 | { |
| 1018 | return iter->table_data + iter->current_pos; |
| 1019 | } |
| 1020 | |
| 1021 | typedef bool (*equal_handler)(const void *entry, const void *key); |
| 1022 | |
| 1023 | static const void * |
| 1024 | pldm_bios_table_entry_find_by_iter(struct pldm_bios_table_iter *iter, |
| 1025 | const void *key, equal_handler equal) |
| 1026 | { |
| 1027 | const void *entry; |
| 1028 | while (!pldm_bios_table_iter_is_end(iter)) { |
| 1029 | entry = pldm_bios_table_iter_value(iter); |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1030 | if (equal(entry, key)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1031 | return entry; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1032 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1033 | pldm_bios_table_iter_next(iter); |
| 1034 | } |
| 1035 | return NULL; |
| 1036 | } |
| 1037 | |
| 1038 | static const void * |
| 1039 | pldm_bios_table_entry_find_from_table(const void *table, size_t length, |
| 1040 | enum pldm_bios_table_types type, |
| 1041 | equal_handler equal, const void *key) |
| 1042 | { |
| 1043 | struct pldm_bios_table_iter *iter = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1044 | pldm_bios_table_iter_create(table, length, type); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1045 | const void *entry = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1046 | pldm_bios_table_entry_find_by_iter(iter, key, equal); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1047 | pldm_bios_table_iter_free(iter); |
| 1048 | return entry; |
| 1049 | } |
| 1050 | |
| 1051 | static bool string_table_handle_equal(const void *entry, const void *key) |
| 1052 | { |
| 1053 | const struct pldm_bios_string_table_entry *string_entry = entry; |
| 1054 | uint16_t handle = *(uint16_t *)key; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1055 | if (pldm_bios_table_string_entry_decode_handle(string_entry) == |
| 1056 | handle) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1057 | return true; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1058 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1059 | return false; |
| 1060 | } |
| 1061 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1062 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1063 | const struct pldm_bios_string_table_entry * |
| 1064 | pldm_bios_table_string_find_by_handle(const void *table, size_t length, |
| 1065 | uint16_t handle) |
| 1066 | { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1067 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1068 | PLDM_BIOS_STRING_TABLE, |
| 1069 | string_table_handle_equal, |
| 1070 | &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | struct string_equal_arg { |
| 1074 | uint16_t str_length; |
| 1075 | const char *str; |
| 1076 | }; |
| 1077 | |
| 1078 | static bool string_table_string_equal(const void *entry, const void *key) |
| 1079 | { |
| 1080 | const struct pldm_bios_string_table_entry *string_entry = entry; |
| 1081 | const struct string_equal_arg *arg = key; |
| 1082 | if (arg->str_length != |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1083 | pldm_bios_table_string_entry_decode_string_length(string_entry)) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1084 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1085 | } |
| 1086 | if (memcmp(string_entry->name, arg->str, arg->str_length) != 0) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1087 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1088 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1089 | return true; |
| 1090 | } |
| 1091 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1092 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1093 | const struct pldm_bios_string_table_entry * |
| 1094 | pldm_bios_table_string_find_by_string(const void *table, size_t length, |
| 1095 | const char *str) |
| 1096 | { |
| 1097 | uint16_t str_length = strlen(str); |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1098 | struct string_equal_arg arg = { str_length, str }; |
| 1099 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1100 | PLDM_BIOS_STRING_TABLE, |
| 1101 | string_table_string_equal, |
| 1102 | &arg); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1103 | } |
| 1104 | |
| 1105 | static bool attr_table_handle_equal(const void *entry, const void *key) |
| 1106 | { |
| 1107 | uint16_t handle = *(uint16_t *)key; |
| 1108 | return pldm_bios_table_attr_entry_decode_attribute_handle(entry) == |
| 1109 | handle; |
| 1110 | } |
| 1111 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1112 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1113 | const struct pldm_bios_attr_table_entry * |
| 1114 | pldm_bios_table_attr_find_by_handle(const void *table, size_t length, |
| 1115 | uint16_t handle) |
| 1116 | { |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1117 | return pldm_bios_table_entry_find_from_table(table, length, |
| 1118 | PLDM_BIOS_ATTR_TABLE, |
| 1119 | attr_table_handle_equal, |
| 1120 | &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1121 | } |
| 1122 | |
| 1123 | static bool attr_table_string_handle_equal(const void *entry, const void *key) |
| 1124 | { |
| 1125 | uint16_t handle = *(uint16_t *)key; |
| 1126 | return pldm_bios_table_attr_entry_decode_string_handle(entry) == handle; |
| 1127 | } |
| 1128 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1129 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1130 | const struct pldm_bios_attr_table_entry * |
| 1131 | pldm_bios_table_attr_find_by_string_handle(const void *table, size_t length, |
| 1132 | uint16_t handle) |
| 1133 | { |
| 1134 | return pldm_bios_table_entry_find_from_table( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1135 | table, length, PLDM_BIOS_ATTR_TABLE, |
| 1136 | attr_table_string_handle_equal, &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | static bool attr_value_table_handle_equal(const void *entry, const void *key) |
| 1140 | { |
| 1141 | uint16_t handle = *(uint16_t *)key; |
| 1142 | return pldm_bios_table_attr_value_entry_decode_handle(entry) == handle; |
| 1143 | } |
| 1144 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1145 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1146 | const struct pldm_bios_attr_val_table_entry * |
| 1147 | pldm_bios_table_attr_value_find_by_handle(const void *table, size_t length, |
| 1148 | uint16_t handle) |
| 1149 | { |
| 1150 | return pldm_bios_table_entry_find_from_table( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1151 | table, length, PLDM_BIOS_ATTR_VAL_TABLE, |
| 1152 | attr_value_table_handle_equal, &handle); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1153 | } |
| 1154 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1155 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1156 | int pldm_bios_table_attr_value_copy_and_update( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1157 | const void *src_table, size_t src_length, void *dest_table, |
| 1158 | size_t *dest_length, const void *entry, size_t entry_length) |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1159 | { |
| 1160 | struct pldm_bios_table_iter *iter = pldm_bios_table_iter_create( |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1161 | src_table, src_length, PLDM_BIOS_ATTR_VAL_TABLE); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1162 | |
| 1163 | int rc = PLDM_SUCCESS; |
Andrew Jeffery | fbe61d7 | 2023-04-05 20:28:23 +0930 | [diff] [blame] | 1164 | const struct pldm_bios_attr_val_table_entry *tmp; |
| 1165 | const struct pldm_bios_attr_val_table_entry *to_update = entry; |
| 1166 | size_t buffer_length = *dest_length; |
| 1167 | size_t copied_length = 0; |
| 1168 | size_t length = 0; |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1169 | while (!pldm_bios_table_iter_is_end(iter)) { |
| 1170 | tmp = pldm_bios_table_iter_attr_value_entry_value(iter); |
| 1171 | length = attr_value_table_entry_length(tmp); |
| 1172 | |
| 1173 | /* we need the tmp's entry_length here, iter_next will calculate |
| 1174 | * it too, use current_pos directly to avoid calculating it |
| 1175 | * twice */ |
| 1176 | iter->current_pos += length; |
| 1177 | if (tmp->attr_handle == to_update->attr_handle) { |
| 1178 | if (tmp->attr_type != to_update->attr_type) { |
| 1179 | rc = PLDM_ERROR_INVALID_DATA; |
| 1180 | goto out; |
| 1181 | } |
| 1182 | length = entry_length; |
| 1183 | tmp = entry; |
| 1184 | } |
| 1185 | if (copied_length + length > buffer_length) { |
| 1186 | rc = PLDM_ERROR_INVALID_LENGTH; |
| 1187 | goto out; |
| 1188 | } |
| 1189 | memcpy((uint8_t *)dest_table + copied_length, tmp, length); |
| 1190 | copied_length += length; |
| 1191 | } |
| 1192 | |
| 1193 | size_t pad_checksum_size = |
Andrew Jeffery | 37dd6a3 | 2023-05-12 16:04:06 +0930 | [diff] [blame] | 1194 | pldm_bios_table_pad_checksum_size(copied_length); |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1195 | if ((pad_checksum_size + copied_length) > buffer_length) { |
| 1196 | rc = PLDM_ERROR_INVALID_LENGTH; |
| 1197 | goto out; |
| 1198 | } |
| 1199 | |
Andrew Jeffery | 50dd159 | 2023-07-14 16:02:05 +0930 | [diff] [blame] | 1200 | rc = pldm_bios_table_append_pad_checksum_check( |
| 1201 | dest_table, buffer_length, &copied_length); |
| 1202 | if (rc == PLDM_SUCCESS) { |
| 1203 | *dest_length = copied_length; |
| 1204 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1205 | out: |
| 1206 | pldm_bios_table_iter_free(iter); |
| 1207 | return rc; |
| 1208 | } |
| 1209 | |
Andrew Jeffery | 9d2a1c6 | 2023-06-05 13:02:16 +0930 | [diff] [blame] | 1210 | LIBPLDM_ABI_STABLE |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1211 | bool pldm_bios_table_checksum(const uint8_t *table, size_t size) |
| 1212 | { |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1213 | if (table == NULL) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1214 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1215 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1216 | |
| 1217 | // 12: BIOSStringHandle(uint16) + BIOSStringLength(uint16) + |
| 1218 | // Variable(4) + checksum(uint32) |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1219 | if (size < 12) { |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1220 | return false; |
Andrew Jeffery | d2c64cb | 2023-04-05 19:51:39 +0930 | [diff] [blame] | 1221 | } |
Andrew Jeffery | 9c76679 | 2022-08-10 23:12:49 +0930 | [diff] [blame] | 1222 | |
| 1223 | uint32_t src_crc = le32toh(*(uint32_t *)(table + size - 4)); |
| 1224 | uint32_t dst_crc = crc32(table, size - 4); |
| 1225 | |
| 1226 | return src_crc == dst_crc; |
| 1227 | } |