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