Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
| 2 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 3 | #include <assert.h> |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 4 | #include <getopt.h> |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 5 | #include <stdbool.h> |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 6 | #include <stdint.h> |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <string.h> |
| 10 | #include <unistd.h> |
| 11 | |
| 12 | #include <common.h> |
| 13 | #include <commonlib/bsd/elog.h> |
| 14 | #include <flashrom.h> |
| 15 | |
| 16 | #include "eventlog.h" |
| 17 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 18 | /* Only refers to the data max size. The "-1" is the checksum byte */ |
| 19 | #define ELOG_MAX_EVENT_DATA_SIZE (ELOG_MAX_EVENT_SIZE - sizeof(struct event_header) - 1) |
| 20 | |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 21 | enum elogtool_return { |
| 22 | ELOGTOOL_EXIT_SUCCESS = 0, |
| 23 | ELOGTOOL_EXIT_BAD_ARGS, |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 24 | ELOGTOOL_EXIT_READ_ERROR, |
| 25 | ELOGTOOL_EXIT_WRITE_ERROR, |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 26 | ELOGTOOL_EXIT_NOT_ENOUGH_MEMORY, |
| 27 | ELOGTOOL_EXIT_INVALID_ELOG_FORMAT, |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 28 | ELOGTOOL_EXIT_NOT_ENOUGH_BUFFER_SPACE, |
| 29 | }; |
| 30 | |
| 31 | static int cmd_list(const struct buffer *); |
| 32 | static int cmd_clear(const struct buffer *); |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 33 | static int cmd_add(const struct buffer *); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 34 | |
| 35 | static const struct { |
| 36 | const char *name; |
| 37 | int (*func)(const struct buffer *buf); |
| 38 | /* Whether it requires to write the buffer back */ |
| 39 | bool write_back; |
| 40 | } cmds[] = { |
| 41 | {"list", cmd_list, false}, |
| 42 | {"clear", cmd_clear, true}, |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 43 | {"add", cmd_add, true}, |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 44 | }; |
| 45 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 46 | static char **cmd_argv; /* Command arguments */ |
| 47 | static char *argv0; /* Used as invoked_as */ |
| 48 | |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 49 | static struct option long_options[] = { |
| 50 | {"file", required_argument, 0, 'f'}, |
| 51 | {"help", no_argument, 0, 'h'}, |
| 52 | {NULL, 0, 0, 0}, |
| 53 | }; |
| 54 | |
| 55 | static void usage(char *invoked_as) |
| 56 | { |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 57 | fprintf(stderr, "elogtool: edit elog events\n\n" |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 58 | "USAGE:\n" |
| 59 | "\t%s COMMAND [-f <filename>]\n\n" |
| 60 | "where, COMMAND is:\n" |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 61 | " list lists all the event logs in human readable format\n" |
| 62 | " clear clears all the event logs\n" |
| 63 | " add <event_type> [event_data] add an entry to the event log\n" |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 64 | "\n" |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 65 | "ARGS\n" |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 66 | "-f, --file <filename> File that holds event log partition.\n" |
| 67 | " If empty it will try to read/write from/to\n" |
| 68 | " the " ELOG_RW_REGION_NAME " using flashrom.\n" |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 69 | "-h, --help Print this help\n", |
| 70 | invoked_as); |
| 71 | } |
| 72 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 73 | /* |
| 74 | * If filename is empty, read RW_ELOG from flashrom. |
| 75 | * Otherwise read the RW_ELOG from a file. |
| 76 | * It fails if the ELOG header is invalid. |
| 77 | * On success, buffer must be freed by caller. |
| 78 | */ |
| 79 | static int elog_read(struct buffer *buffer, const char *filename) |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 80 | { |
| 81 | if (filename == NULL) { |
| 82 | uint8_t *buf; |
| 83 | uint32_t buf_size; |
| 84 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 85 | if (flashrom_read(FLASHROM_PROGRAMMER_INTERNAL_AP, ELOG_RW_REGION_NAME, |
| 86 | &buf, &buf_size) != VB2_SUCCESS) { |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 87 | fprintf(stderr, "Could not read RW_ELOG region using flashrom\n"); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 88 | return ELOGTOOL_EXIT_READ_ERROR; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 89 | } |
| 90 | buffer_init(buffer, NULL, buf, buf_size); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 91 | } else if (buffer_from_file(buffer, filename) != 0) { |
| 92 | fprintf(stderr, "Could not read input file: %s\n", filename); |
| 93 | return ELOGTOOL_EXIT_READ_ERROR; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 94 | } |
| 95 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 96 | if (elog_verify_header(buffer_get(buffer)) != CB_SUCCESS) { |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 97 | fprintf(stderr, "FATAL: Invalid elog header\n"); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 98 | buffer_delete(buffer); |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 99 | return ELOGTOOL_EXIT_INVALID_ELOG_FORMAT; |
| 100 | } |
| 101 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 102 | return ELOGTOOL_EXIT_SUCCESS; |
| 103 | } |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 104 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 105 | /* |
| 106 | * If filename is NULL, it saves the buffer using flashrom. |
| 107 | * Otherwise, it saves the buffer in the given filename. |
| 108 | */ |
| 109 | static int elog_write(struct buffer *buf, const char *filename) |
| 110 | { |
| 111 | if (filename == NULL) { |
| 112 | if (flashrom_write(FLASHROM_PROGRAMMER_INTERNAL_AP, ELOG_RW_REGION_NAME, |
| 113 | buffer_get(buf), buffer_size(buf)) != VB2_SUCCESS) { |
| 114 | fprintf(stderr, |
| 115 | "Failed to write to RW_ELOG region using flashrom\n"); |
| 116 | return ELOGTOOL_EXIT_WRITE_ERROR; |
| 117 | } |
| 118 | return ELOGTOOL_EXIT_SUCCESS; |
| 119 | } |
| 120 | |
| 121 | if (buffer_write_file(buf, filename) != 0) { |
| 122 | fprintf(stderr, "Failed to write to file %s\n", filename); |
| 123 | return ELOGTOOL_EXIT_WRITE_ERROR; |
| 124 | } |
| 125 | return ELOGTOOL_EXIT_SUCCESS; |
| 126 | } |
| 127 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 128 | /* Buffer offset must point to a valid event_header struct */ |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 129 | static size_t next_available_event_offset(const struct buffer *buf) |
| 130 | { |
| 131 | const struct event_header *event; |
| 132 | struct buffer copy, *iter = © |
| 133 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 134 | assert(buffer_offset(buf) >= sizeof(struct elog_header)); |
| 135 | |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 136 | buffer_clone(iter, buf); |
| 137 | |
| 138 | while (buffer_size(iter) >= sizeof(struct event_header)) { |
| 139 | event = buffer_get(iter); |
| 140 | if (event->type == ELOG_TYPE_EOL || event->length == 0) |
| 141 | break; |
| 142 | |
| 143 | assert(event->length <= buffer_size(iter)); |
| 144 | buffer_seek(iter, event->length); |
| 145 | } |
| 146 | |
| 147 | return buffer_offset(iter) - buffer_offset(buf); |
| 148 | } |
| 149 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 150 | /* |
| 151 | * Shrinks buffer by ~bytes_to_shrink, then appends a LOG_CLEAR event, |
| 152 | * and finally fills the remaining area with EOL events. |
| 153 | * Buffer offset must point to a valid event_header struct. |
| 154 | */ |
| 155 | static int shrink_buffer(const struct buffer *buf, size_t bytes_to_shrink) |
| 156 | { |
| 157 | struct buffer copy, *iter = © |
| 158 | const struct event_header *event; |
| 159 | uint32_t cleared; |
| 160 | int remaining; |
| 161 | uint8_t *data; |
| 162 | |
| 163 | assert(buffer_offset(buf) >= sizeof(struct elog_header)); |
| 164 | |
| 165 | buffer_clone(©, buf); |
| 166 | |
| 167 | /* Save copy of first event for later */ |
| 168 | data = buffer_get(buf); |
| 169 | |
| 170 | /* Set buffer offset pointing to the event right after bytes_to_shrink */ |
| 171 | while (buffer_offset(iter) < bytes_to_shrink) { |
| 172 | event = buffer_get(iter); |
| 173 | assert(!(event->type == ELOG_TYPE_EOL || event->length == 0)); |
| 174 | |
| 175 | buffer_seek(iter, event->length); |
| 176 | } |
| 177 | |
| 178 | /* Must be relative to the buffer offset */ |
| 179 | cleared = buffer_offset(iter) - buffer_offset(buf); |
| 180 | remaining = buffer_size(iter); |
| 181 | |
| 182 | /* Overlapping copy */ |
| 183 | memmove(data, data + cleared, remaining); |
| 184 | memset(data + remaining, ELOG_TYPE_EOL, cleared); |
| 185 | |
| 186 | /* Re-init copy to have a clean offset. Needed for init_event() */ |
| 187 | buffer_clone(©, buf); |
| 188 | buffer_seek(©, next_available_event_offset(©)); |
| 189 | |
| 190 | if (!eventlog_init_event(©, ELOG_TYPE_LOG_CLEAR, &cleared, sizeof(cleared))) |
| 191 | return ELOGTOOL_EXIT_NOT_ENOUGH_BUFFER_SPACE; |
| 192 | |
| 193 | return ELOGTOOL_EXIT_SUCCESS; |
| 194 | } |
| 195 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 196 | static int cmd_list(const struct buffer *buf) |
| 197 | { |
| 198 | const struct event_header *event; |
| 199 | unsigned int count = 0; |
| 200 | |
| 201 | /* Point to the first event */ |
| 202 | event = buffer_get(buf) + sizeof(struct elog_header); |
| 203 | |
| 204 | while ((const void *)(event) < buffer_end(buf)) { |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 205 | if (event->type == ELOG_TYPE_EOL || event->length == 0) |
| 206 | break; |
| 207 | |
| 208 | eventlog_print_event(event, count); |
| 209 | event = elog_get_next_event(event); |
| 210 | count++; |
| 211 | } |
| 212 | |
| 213 | return ELOGTOOL_EXIT_SUCCESS; |
| 214 | } |
| 215 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 216 | /* |
| 217 | * Clears the elog events from the given buffer, which is a valid RW_ELOG region. |
| 218 | * A LOG_CLEAR event is appended. |
| 219 | */ |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 220 | static int cmd_clear(const struct buffer *buf) |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 221 | { |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 222 | uint32_t used_data_size; |
| 223 | struct buffer copy; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 224 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 225 | /* Clone the buffer to avoid changing the offset of the original buffer */ |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 226 | buffer_clone(©, buf); |
| 227 | buffer_seek(©, sizeof(struct elog_header)); |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 228 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 229 | /* |
| 230 | * Calculate the size of the "used" buffer, needed for ELOG_TYPE_LOG_CLEAR. |
| 231 | * Then overwrite the entire buffer with ELOG_TYPE_EOL. |
| 232 | * Finally insert a LOG_CLEAR event into the buffer. |
| 233 | */ |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 234 | used_data_size = next_available_event_offset(©); |
| 235 | memset(buffer_get(©), ELOG_TYPE_EOL, buffer_size(©)); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 236 | |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 237 | if (!eventlog_init_event(©, ELOG_TYPE_LOG_CLEAR, |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 238 | &used_data_size, sizeof(used_data_size))) |
| 239 | return ELOGTOOL_EXIT_NOT_ENOUGH_BUFFER_SPACE; |
| 240 | |
| 241 | return ELOGTOOL_EXIT_SUCCESS; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 242 | } |
| 243 | |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 244 | static void cmd_add_usage(void) |
| 245 | { |
| 246 | usage(argv0); |
| 247 | |
| 248 | fprintf(stderr, "\n\nSpecific to ADD command:\n" |
| 249 | "\n" |
| 250 | "<event_type>: an hexadecimal number (0-255). Prefix '0x' is optional\n" |
| 251 | "[event_data]: (optional) a series of hexadecimal numbers. Must be:\n" |
| 252 | " - len(event_data) %% 2 == 0\n" |
Ricardo Quesada | e48043b | 2021-09-20 17:17:07 -0700 | [diff] [blame] | 253 | " - len(event_data) in bytes <= %zu\n" |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 254 | "\n" |
| 255 | "Example:\n" |
| 256 | "%s add 0x16 01ABF0 # 01ABF0 is actually three bytes: 0x01, 0xAB and 0xF0\n" |
| 257 | "%s add 17 # 17 is in hexa\n", |
| 258 | ELOG_MAX_EVENT_DATA_SIZE, argv0, argv0 |
| 259 | ); |
| 260 | } |
| 261 | |
| 262 | static int cmd_add_parse_args(uint8_t *type, uint8_t *data, size_t *data_size) |
| 263 | { |
| 264 | char byte[3] = {0}; |
| 265 | int argc = 0; |
| 266 | char *endptr; |
| 267 | long value; |
| 268 | int len; |
| 269 | |
| 270 | while (cmd_argv[argc] != NULL) |
| 271 | argc++; |
| 272 | |
| 273 | if (argc != 1 && argc != 2) |
| 274 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 275 | |
| 276 | /* Force type to be an hexa value to be consistent with the data values */ |
| 277 | value = strtol(cmd_argv[0], NULL, 16); |
| 278 | if (value > 255) { |
| 279 | fprintf(stderr, "Error: Event type should be between 0-0xff; " |
| 280 | "got: 0x%04lx\n", value); |
| 281 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 282 | } |
| 283 | |
| 284 | *type = value; |
| 285 | |
| 286 | if (argc == 1) |
| 287 | return ELOGTOOL_EXIT_SUCCESS; |
| 288 | |
| 289 | /* Assuming argc == 2 */ |
| 290 | len = strlen(cmd_argv[1]); |
| 291 | |
| 292 | /* Needs 2 bytes per number */ |
| 293 | if (len % 2 != 0) { |
| 294 | fprintf(stderr, |
| 295 | "Error: Event data length should be an even number; got: %d\n", len); |
| 296 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 297 | } |
| 298 | |
| 299 | *data_size = len / 2; |
| 300 | |
| 301 | if (*data_size > ELOG_MAX_EVENT_DATA_SIZE) { |
| 302 | fprintf(stderr, |
Ricardo Quesada | e48043b | 2021-09-20 17:17:07 -0700 | [diff] [blame] | 303 | "Error: Event data length (in bytes) should be <= %zu; got: %zu\n", |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 304 | ELOG_MAX_EVENT_DATA_SIZE, *data_size); |
| 305 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 306 | } |
| 307 | |
| 308 | for (unsigned int i = 0; i < *data_size; i++) { |
| 309 | byte[0] = *cmd_argv[1]++; |
| 310 | byte[1] = *cmd_argv[1]++; |
| 311 | data[i] = strtol(byte, &endptr, 16); |
| 312 | if (endptr != &byte[2]) { |
| 313 | fprintf(stderr, "Error: Event data length contains invalid data. " |
| 314 | "Only hexa digits are valid\n"); |
| 315 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | return ELOGTOOL_EXIT_SUCCESS; |
| 320 | } |
| 321 | |
| 322 | /* Appends an elog entry to EventLog buffer. */ |
| 323 | static int cmd_add(const struct buffer *buf) |
| 324 | { |
| 325 | uint8_t data[ELOG_MAX_EVENT_DATA_SIZE]; |
| 326 | size_t data_size = 0; |
| 327 | struct buffer copy; |
| 328 | uint8_t type = 0; |
| 329 | size_t next_event; |
| 330 | size_t threshold; |
| 331 | int ret; |
| 332 | |
| 333 | if (cmd_add_parse_args(&type, data, &data_size) != ELOGTOOL_EXIT_SUCCESS) { |
| 334 | cmd_add_usage(); |
| 335 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 336 | } |
| 337 | |
| 338 | buffer_clone(©, buf); |
| 339 | buffer_seek(©, sizeof(struct elog_header)); |
| 340 | |
| 341 | threshold = buffer_size(©) * 3 / 4; |
| 342 | next_event = next_available_event_offset(©); |
| 343 | |
| 344 | if (next_event > threshold) { |
| 345 | /* Shrink ~ 1/4 of the size */ |
| 346 | ret = shrink_buffer(©, buffer_size(buf) - threshold); |
| 347 | if (ret != ELOGTOOL_EXIT_SUCCESS) |
| 348 | return ret; |
| 349 | next_event = next_available_event_offset(©); |
| 350 | } |
| 351 | |
| 352 | buffer_seek(©, next_event); |
| 353 | |
| 354 | if (!eventlog_init_event(©, type, data, data_size)) |
| 355 | return ELOGTOOL_EXIT_NOT_ENOUGH_BUFFER_SPACE; |
| 356 | |
| 357 | return ELOGTOOL_EXIT_SUCCESS; |
| 358 | } |
| 359 | |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 360 | int main(int argc, char **argv) |
| 361 | { |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 362 | char *filename = NULL; |
| 363 | struct buffer buf; |
| 364 | unsigned int i; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 365 | int argflag; |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 366 | int ret; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 367 | |
| 368 | if (argc < 2) { |
| 369 | usage(argv[0]); |
| 370 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 371 | } |
| 372 | |
| 373 | while (1) { |
| 374 | int option_index; |
| 375 | argflag = getopt_long(argc, argv, "hf:", long_options, &option_index); |
| 376 | if (argflag == -1) |
| 377 | break; |
| 378 | |
| 379 | switch (argflag) { |
| 380 | case 'h': |
| 381 | case '?': |
| 382 | usage(argv[0]); |
| 383 | return ELOGTOOL_EXIT_SUCCESS; |
| 384 | |
| 385 | case 'f': |
| 386 | if (!optarg) { |
| 387 | usage(argv[0]); |
| 388 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 389 | } |
| 390 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 391 | filename = optarg; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 392 | break; |
| 393 | |
| 394 | default: |
| 395 | break; |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | /* At least one command must be available. */ |
| 400 | if (optind >= argc) { |
| 401 | usage(argv[0]); |
| 402 | return ELOGTOOL_EXIT_BAD_ARGS; |
| 403 | } |
| 404 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 405 | /* Returned buffer must be freed. */ |
| 406 | ret = elog_read(&buf, filename); |
| 407 | if (ret) |
| 408 | return ret; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 409 | |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 410 | for (i = 0; i < ARRAY_SIZE(cmds); i++) { |
| 411 | if (!strcmp(cmds[i].name, argv[optind])) { |
Ricardo Quesada | 683b294d | 2021-09-03 17:47:43 -0700 | [diff] [blame] | 412 | /* For commands that parse their own arguments. */ |
| 413 | cmd_argv = &argv[optind+1]; |
| 414 | argv0 = argv[0]; |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 415 | ret = cmds[i].func(&buf); |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 420 | if (i == ARRAY_SIZE(cmds)) { |
| 421 | usage(argv[0]); |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 422 | ret = ELOGTOOL_EXIT_BAD_ARGS; |
Ricardo Quesada | a2bf94d | 2021-09-03 17:30:31 -0700 | [diff] [blame] | 423 | } |
Ricardo Quesada | 49a96a9 | 2021-08-16 11:25:52 -0700 | [diff] [blame] | 424 | |
| 425 | if (!ret && cmds[i].write_back) |
| 426 | ret = elog_write(&buf, filename); |
| 427 | |
| 428 | buffer_delete(&buf); |
| 429 | |
| 430 | return ret; |
Ricardo Quesada | c2cf394 | 2021-07-16 16:49:04 -0700 | [diff] [blame] | 431 | } |