Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Command line utility to exercise the QEMU I/O path. |
| 3 | * |
| 4 | * Copyright (C) 2009 Red Hat, Inc. |
| 5 | * Copyright (c) 2003-2005 Silicon Graphics, Inc. |
| 6 | * |
| 7 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 8 | * See the COPYING file in the top-level directory. |
| 9 | */ |
| 10 | |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 11 | #include "qemu-io.h" |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 12 | #include "block/block_int.h" |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 13 | |
| 14 | #define CMD_NOFILE_OK 0x01 |
| 15 | |
| 16 | int qemuio_misalign; |
| 17 | |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 18 | static cmdinfo_t *cmdtab; |
| 19 | static int ncmds; |
| 20 | |
| 21 | static int compare_cmdname(const void *a, const void *b) |
| 22 | { |
| 23 | return strcmp(((const cmdinfo_t *)a)->name, |
| 24 | ((const cmdinfo_t *)b)->name); |
| 25 | } |
| 26 | |
| 27 | void qemuio_add_command(const cmdinfo_t *ci) |
| 28 | { |
| 29 | cmdtab = g_realloc(cmdtab, ++ncmds * sizeof(*cmdtab)); |
| 30 | cmdtab[ncmds - 1] = *ci; |
| 31 | qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); |
| 32 | } |
| 33 | |
| 34 | int qemuio_command_usage(const cmdinfo_t *ci) |
| 35 | { |
| 36 | printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); |
| 37 | return 0; |
| 38 | } |
| 39 | |
| 40 | static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct) |
| 41 | { |
| 42 | if (ct->flags & CMD_FLAG_GLOBAL) { |
| 43 | return 1; |
| 44 | } |
| 45 | if (!(ct->flags & CMD_NOFILE_OK) && !bs) { |
| 46 | fprintf(stderr, "no file open, try 'help open'\n"); |
| 47 | return 0; |
| 48 | } |
| 49 | return 1; |
| 50 | } |
| 51 | |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 52 | static int command(BlockDriverState *bs, const cmdinfo_t *ct, int argc, |
| 53 | char **argv) |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 54 | { |
| 55 | char *cmd = argv[0]; |
| 56 | |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 57 | if (!init_check_command(bs, ct)) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { |
| 62 | if (ct->argmax == -1) { |
| 63 | fprintf(stderr, |
| 64 | "bad argument count %d to %s, expected at least %d arguments\n", |
| 65 | argc-1, cmd, ct->argmin); |
| 66 | } else if (ct->argmin == ct->argmax) { |
| 67 | fprintf(stderr, |
| 68 | "bad argument count %d to %s, expected %d arguments\n", |
| 69 | argc-1, cmd, ct->argmin); |
| 70 | } else { |
| 71 | fprintf(stderr, |
| 72 | "bad argument count %d to %s, expected between %d and %d arguments\n", |
| 73 | argc-1, cmd, ct->argmin, ct->argmax); |
| 74 | } |
| 75 | return 0; |
| 76 | } |
| 77 | optind = 0; |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 78 | return ct->cfunc(bs, argc, argv); |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | static const cmdinfo_t *find_command(const char *cmd) |
| 82 | { |
| 83 | cmdinfo_t *ct; |
| 84 | |
| 85 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { |
| 86 | if (strcmp(ct->name, cmd) == 0 || |
| 87 | (ct->altname && strcmp(ct->altname, cmd) == 0)) |
| 88 | { |
| 89 | return (const cmdinfo_t *)ct; |
| 90 | } |
| 91 | } |
| 92 | return NULL; |
| 93 | } |
| 94 | |
| 95 | static char **breakline(char *input, int *count) |
| 96 | { |
| 97 | int c = 0; |
| 98 | char *p; |
| 99 | char **rval = g_malloc0(sizeof(char *)); |
| 100 | char **tmp; |
| 101 | |
| 102 | while (rval && (p = qemu_strsep(&input, " ")) != NULL) { |
| 103 | if (!*p) { |
| 104 | continue; |
| 105 | } |
| 106 | c++; |
| 107 | tmp = g_realloc(rval, sizeof(*rval) * (c + 1)); |
| 108 | if (!tmp) { |
| 109 | g_free(rval); |
| 110 | rval = NULL; |
| 111 | c = 0; |
| 112 | break; |
| 113 | } else { |
| 114 | rval = tmp; |
| 115 | } |
| 116 | rval[c - 1] = p; |
| 117 | rval[c] = NULL; |
| 118 | } |
| 119 | *count = c; |
| 120 | return rval; |
| 121 | } |
| 122 | |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 123 | static int64_t cvtnum(const char *s) |
| 124 | { |
| 125 | char *end; |
| 126 | return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B); |
| 127 | } |
| 128 | |
Kevin Wolf | 0b61388 | 2013-06-05 14:19:38 +0200 | [diff] [blame] | 129 | #define EXABYTES(x) ((long long)(x) << 60) |
| 130 | #define PETABYTES(x) ((long long)(x) << 50) |
| 131 | #define TERABYTES(x) ((long long)(x) << 40) |
| 132 | #define GIGABYTES(x) ((long long)(x) << 30) |
| 133 | #define MEGABYTES(x) ((long long)(x) << 20) |
| 134 | #define KILOBYTES(x) ((long long)(x) << 10) |
| 135 | |
| 136 | #define TO_EXABYTES(x) ((x) / EXABYTES(1)) |
| 137 | #define TO_PETABYTES(x) ((x) / PETABYTES(1)) |
| 138 | #define TO_TERABYTES(x) ((x) / TERABYTES(1)) |
| 139 | #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) |
| 140 | #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) |
| 141 | #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) |
| 142 | |
| 143 | static void cvtstr(double value, char *str, size_t size) |
| 144 | { |
| 145 | char *trim; |
| 146 | const char *suffix; |
| 147 | |
| 148 | if (value >= EXABYTES(1)) { |
| 149 | suffix = " EiB"; |
| 150 | snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); |
| 151 | } else if (value >= PETABYTES(1)) { |
| 152 | suffix = " PiB"; |
| 153 | snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); |
| 154 | } else if (value >= TERABYTES(1)) { |
| 155 | suffix = " TiB"; |
| 156 | snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); |
| 157 | } else if (value >= GIGABYTES(1)) { |
| 158 | suffix = " GiB"; |
| 159 | snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); |
| 160 | } else if (value >= MEGABYTES(1)) { |
| 161 | suffix = " MiB"; |
| 162 | snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); |
| 163 | } else if (value >= KILOBYTES(1)) { |
| 164 | suffix = " KiB"; |
| 165 | snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); |
| 166 | } else { |
| 167 | suffix = " bytes"; |
| 168 | snprintf(str, size - 6, "%f", value); |
| 169 | } |
| 170 | |
| 171 | trim = strstr(str, ".000"); |
| 172 | if (trim) { |
| 173 | strcpy(trim, suffix); |
| 174 | } else { |
| 175 | strcat(str, suffix); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | |
| 180 | |
| 181 | static struct timeval tsub(struct timeval t1, struct timeval t2) |
| 182 | { |
| 183 | t1.tv_usec -= t2.tv_usec; |
| 184 | if (t1.tv_usec < 0) { |
| 185 | t1.tv_usec += 1000000; |
| 186 | t1.tv_sec--; |
| 187 | } |
| 188 | t1.tv_sec -= t2.tv_sec; |
| 189 | return t1; |
| 190 | } |
| 191 | |
| 192 | static double tdiv(double value, struct timeval tv) |
| 193 | { |
| 194 | return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
| 195 | } |
| 196 | |
| 197 | #define HOURS(sec) ((sec) / (60 * 60)) |
| 198 | #define MINUTES(sec) (((sec) % (60 * 60)) / 60) |
| 199 | #define SECONDS(sec) ((sec) % 60) |
| 200 | |
| 201 | enum { |
| 202 | DEFAULT_TIME = 0x0, |
| 203 | TERSE_FIXED_TIME = 0x1, |
| 204 | VERBOSE_FIXED_TIME = 0x2, |
| 205 | }; |
| 206 | |
| 207 | static void timestr(struct timeval *tv, char *ts, size_t size, int format) |
| 208 | { |
| 209 | double usec = (double)tv->tv_usec / 1000000.0; |
| 210 | |
| 211 | if (format & TERSE_FIXED_TIME) { |
| 212 | if (!HOURS(tv->tv_sec)) { |
| 213 | snprintf(ts, size, "%u:%02u.%02u", |
| 214 | (unsigned int) MINUTES(tv->tv_sec), |
| 215 | (unsigned int) SECONDS(tv->tv_sec), |
| 216 | (unsigned int) (usec * 100)); |
| 217 | return; |
| 218 | } |
| 219 | format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ |
| 220 | } |
| 221 | |
| 222 | if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { |
| 223 | snprintf(ts, size, "%u:%02u:%02u.%02u", |
| 224 | (unsigned int) HOURS(tv->tv_sec), |
| 225 | (unsigned int) MINUTES(tv->tv_sec), |
| 226 | (unsigned int) SECONDS(tv->tv_sec), |
| 227 | (unsigned int) (usec * 100)); |
| 228 | } else { |
| 229 | snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); |
| 230 | } |
| 231 | } |
| 232 | |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 233 | /* |
| 234 | * Parse the pattern argument to various sub-commands. |
| 235 | * |
| 236 | * Because the pattern is used as an argument to memset it must evaluate |
| 237 | * to an unsigned integer that fits into a single byte. |
| 238 | */ |
| 239 | static int parse_pattern(const char *arg) |
| 240 | { |
| 241 | char *endptr = NULL; |
| 242 | long pattern; |
| 243 | |
| 244 | pattern = strtol(arg, &endptr, 0); |
| 245 | if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
| 246 | printf("%s is not a valid pattern byte\n", arg); |
| 247 | return -1; |
| 248 | } |
| 249 | |
| 250 | return pattern; |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Memory allocation helpers. |
| 255 | * |
| 256 | * Make sure memory is aligned by default, or purposefully misaligned if |
| 257 | * that is specified on the command line. |
| 258 | */ |
| 259 | |
| 260 | #define MISALIGN_OFFSET 16 |
| 261 | static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern) |
| 262 | { |
| 263 | void *buf; |
| 264 | |
| 265 | if (qemuio_misalign) { |
| 266 | len += MISALIGN_OFFSET; |
| 267 | } |
| 268 | buf = qemu_blockalign(bs, len); |
| 269 | memset(buf, pattern, len); |
| 270 | if (qemuio_misalign) { |
| 271 | buf += MISALIGN_OFFSET; |
| 272 | } |
| 273 | return buf; |
| 274 | } |
| 275 | |
| 276 | static void qemu_io_free(void *p) |
| 277 | { |
| 278 | if (qemuio_misalign) { |
| 279 | p -= MISALIGN_OFFSET; |
| 280 | } |
| 281 | qemu_vfree(p); |
| 282 | } |
| 283 | |
| 284 | static void dump_buffer(const void *buffer, int64_t offset, int len) |
| 285 | { |
| 286 | int i, j; |
| 287 | const uint8_t *p; |
| 288 | |
| 289 | for (i = 0, p = buffer; i < len; i += 16) { |
| 290 | const uint8_t *s = p; |
| 291 | |
| 292 | printf("%08" PRIx64 ": ", offset + i); |
| 293 | for (j = 0; j < 16 && i + j < len; j++, p++) { |
| 294 | printf("%02x ", *p); |
| 295 | } |
| 296 | printf(" "); |
| 297 | for (j = 0; j < 16 && i + j < len; j++, s++) { |
| 298 | if (isalnum(*s)) { |
| 299 | printf("%c", *s); |
| 300 | } else { |
| 301 | printf("."); |
| 302 | } |
| 303 | } |
| 304 | printf("\n"); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | static void print_report(const char *op, struct timeval *t, int64_t offset, |
| 309 | int count, int total, int cnt, int Cflag) |
| 310 | { |
| 311 | char s1[64], s2[64], ts[64]; |
| 312 | |
| 313 | timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
| 314 | if (!Cflag) { |
| 315 | cvtstr((double)total, s1, sizeof(s1)); |
| 316 | cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
| 317 | printf("%s %d/%d bytes at offset %" PRId64 "\n", |
| 318 | op, total, count, offset); |
| 319 | printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", |
| 320 | s1, cnt, ts, s2, tdiv((double)cnt, *t)); |
| 321 | } else {/* bytes,ops,time,bytes/sec,ops/sec */ |
| 322 | printf("%d,%d,%s,%.3f,%.3f\n", |
| 323 | total, cnt, ts, |
| 324 | tdiv((double)total, *t), |
| 325 | tdiv((double)cnt, *t)); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Parse multiple length statements for vectored I/O, and construct an I/O |
| 331 | * vector matching it. |
| 332 | */ |
| 333 | static void * |
| 334 | create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov, |
| 335 | int pattern) |
| 336 | { |
| 337 | size_t *sizes = g_new0(size_t, nr_iov); |
| 338 | size_t count = 0; |
| 339 | void *buf = NULL; |
| 340 | void *p; |
| 341 | int i; |
| 342 | |
| 343 | for (i = 0; i < nr_iov; i++) { |
| 344 | char *arg = argv[i]; |
| 345 | int64_t len; |
| 346 | |
| 347 | len = cvtnum(arg); |
| 348 | if (len < 0) { |
| 349 | printf("non-numeric length argument -- %s\n", arg); |
| 350 | goto fail; |
| 351 | } |
| 352 | |
| 353 | /* should be SIZE_T_MAX, but that doesn't exist */ |
| 354 | if (len > INT_MAX) { |
| 355 | printf("too large length argument -- %s\n", arg); |
| 356 | goto fail; |
| 357 | } |
| 358 | |
| 359 | if (len & 0x1ff) { |
| 360 | printf("length argument %" PRId64 |
| 361 | " is not sector aligned\n", len); |
| 362 | goto fail; |
| 363 | } |
| 364 | |
| 365 | sizes[i] = len; |
| 366 | count += len; |
| 367 | } |
| 368 | |
| 369 | qemu_iovec_init(qiov, nr_iov); |
| 370 | |
| 371 | buf = p = qemu_io_alloc(bs, count, pattern); |
| 372 | |
| 373 | for (i = 0; i < nr_iov; i++) { |
| 374 | qemu_iovec_add(qiov, p, sizes[i]); |
| 375 | p += sizes[i]; |
| 376 | } |
| 377 | |
| 378 | fail: |
| 379 | g_free(sizes); |
| 380 | return buf; |
| 381 | } |
| 382 | |
| 383 | static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count, |
| 384 | int *total) |
| 385 | { |
| 386 | int ret; |
| 387 | |
| 388 | ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 389 | if (ret < 0) { |
| 390 | return ret; |
| 391 | } |
| 392 | *total = count; |
| 393 | return 1; |
| 394 | } |
| 395 | |
| 396 | static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count, |
| 397 | int *total) |
| 398 | { |
| 399 | int ret; |
| 400 | |
| 401 | ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 402 | if (ret < 0) { |
| 403 | return ret; |
| 404 | } |
| 405 | *total = count; |
| 406 | return 1; |
| 407 | } |
| 408 | |
| 409 | static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count, |
| 410 | int *total) |
| 411 | { |
| 412 | *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
| 413 | if (*total < 0) { |
| 414 | return *total; |
| 415 | } |
| 416 | return 1; |
| 417 | } |
| 418 | |
| 419 | static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count, |
| 420 | int *total) |
| 421 | { |
| 422 | *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
| 423 | if (*total < 0) { |
| 424 | return *total; |
| 425 | } |
| 426 | return 1; |
| 427 | } |
| 428 | |
| 429 | typedef struct { |
| 430 | BlockDriverState *bs; |
| 431 | int64_t offset; |
| 432 | int count; |
| 433 | int *total; |
| 434 | int ret; |
| 435 | bool done; |
| 436 | } CoWriteZeroes; |
| 437 | |
| 438 | static void coroutine_fn co_write_zeroes_entry(void *opaque) |
| 439 | { |
| 440 | CoWriteZeroes *data = opaque; |
| 441 | |
| 442 | data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, |
| 443 | data->count / BDRV_SECTOR_SIZE); |
| 444 | data->done = true; |
| 445 | if (data->ret < 0) { |
| 446 | *data->total = data->ret; |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | *data->total = data->count; |
| 451 | } |
| 452 | |
| 453 | static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count, |
| 454 | int *total) |
| 455 | { |
| 456 | Coroutine *co; |
| 457 | CoWriteZeroes data = { |
| 458 | .bs = bs, |
| 459 | .offset = offset, |
| 460 | .count = count, |
| 461 | .total = total, |
| 462 | .done = false, |
| 463 | }; |
| 464 | |
| 465 | co = qemu_coroutine_create(co_write_zeroes_entry); |
| 466 | qemu_coroutine_enter(co, &data); |
| 467 | while (!data.done) { |
| 468 | qemu_aio_wait(); |
| 469 | } |
| 470 | if (data.ret < 0) { |
| 471 | return data.ret; |
| 472 | } else { |
| 473 | return 1; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset, |
| 478 | int count, int *total) |
| 479 | { |
| 480 | int ret; |
| 481 | |
| 482 | ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 483 | if (ret < 0) { |
| 484 | return ret; |
| 485 | } |
| 486 | *total = count; |
| 487 | return 1; |
| 488 | } |
| 489 | |
| 490 | static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
| 491 | int count, int *total) |
| 492 | { |
| 493 | *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
| 494 | if (*total < 0) { |
| 495 | return *total; |
| 496 | } |
| 497 | return 1; |
| 498 | } |
| 499 | |
| 500 | static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset, |
| 501 | int count, int *total) |
| 502 | { |
| 503 | *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
| 504 | if (*total < 0) { |
| 505 | return *total; |
| 506 | } |
| 507 | return 1; |
| 508 | } |
| 509 | |
| 510 | #define NOT_DONE 0x7fffffff |
| 511 | static void aio_rw_done(void *opaque, int ret) |
| 512 | { |
| 513 | *(int *)opaque = ret; |
| 514 | } |
| 515 | |
| 516 | static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov, |
| 517 | int64_t offset, int *total) |
| 518 | { |
| 519 | int async_ret = NOT_DONE; |
| 520 | |
| 521 | bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
| 522 | aio_rw_done, &async_ret); |
| 523 | while (async_ret == NOT_DONE) { |
| 524 | main_loop_wait(false); |
| 525 | } |
| 526 | |
| 527 | *total = qiov->size; |
| 528 | return async_ret < 0 ? async_ret : 1; |
| 529 | } |
| 530 | |
| 531 | static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov, |
| 532 | int64_t offset, int *total) |
| 533 | { |
| 534 | int async_ret = NOT_DONE; |
| 535 | |
| 536 | bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
| 537 | aio_rw_done, &async_ret); |
| 538 | while (async_ret == NOT_DONE) { |
| 539 | main_loop_wait(false); |
| 540 | } |
| 541 | |
| 542 | *total = qiov->size; |
| 543 | return async_ret < 0 ? async_ret : 1; |
| 544 | } |
| 545 | |
| 546 | struct multiwrite_async_ret { |
| 547 | int num_done; |
| 548 | int error; |
| 549 | }; |
| 550 | |
| 551 | static void multiwrite_cb(void *opaque, int ret) |
| 552 | { |
| 553 | struct multiwrite_async_ret *async_ret = opaque; |
| 554 | |
| 555 | async_ret->num_done++; |
| 556 | if (ret < 0) { |
| 557 | async_ret->error = ret; |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs, |
| 562 | int num_reqs, int *total) |
| 563 | { |
| 564 | int i, ret; |
| 565 | struct multiwrite_async_ret async_ret = { |
| 566 | .num_done = 0, |
| 567 | .error = 0, |
| 568 | }; |
| 569 | |
| 570 | *total = 0; |
| 571 | for (i = 0; i < num_reqs; i++) { |
| 572 | reqs[i].cb = multiwrite_cb; |
| 573 | reqs[i].opaque = &async_ret; |
| 574 | *total += reqs[i].qiov->size; |
| 575 | } |
| 576 | |
| 577 | ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
| 578 | if (ret < 0) { |
| 579 | return ret; |
| 580 | } |
| 581 | |
| 582 | while (async_ret.num_done < num_reqs) { |
| 583 | main_loop_wait(false); |
| 584 | } |
| 585 | |
| 586 | return async_ret.error < 0 ? async_ret.error : 1; |
| 587 | } |
| 588 | |
| 589 | static void read_help(void) |
| 590 | { |
| 591 | printf( |
| 592 | "\n" |
| 593 | " reads a range of bytes from the given offset\n" |
| 594 | "\n" |
| 595 | " Example:\n" |
| 596 | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" |
| 597 | "\n" |
| 598 | " Reads a segment of the currently open file, optionally dumping it to the\n" |
| 599 | " standard output stream (with -v option) for subsequent inspection.\n" |
| 600 | " -b, -- read from the VM state rather than the virtual disk\n" |
| 601 | " -C, -- report statistics in a machine parsable format\n" |
| 602 | " -l, -- length for pattern verification (only with -P)\n" |
| 603 | " -p, -- use bdrv_pread to read the file\n" |
| 604 | " -P, -- use a pattern to verify read data\n" |
| 605 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 606 | " -s, -- start offset for pattern verification (only with -P)\n" |
| 607 | " -v, -- dump buffer to standard output\n" |
| 608 | "\n"); |
| 609 | } |
| 610 | |
| 611 | static int read_f(BlockDriverState *bs, int argc, char **argv); |
| 612 | |
| 613 | static const cmdinfo_t read_cmd = { |
| 614 | .name = "read", |
| 615 | .altname = "r", |
| 616 | .cfunc = read_f, |
| 617 | .argmin = 2, |
| 618 | .argmax = -1, |
| 619 | .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len", |
| 620 | .oneline = "reads a number of bytes at a specified offset", |
| 621 | .help = read_help, |
| 622 | }; |
| 623 | |
| 624 | static int read_f(BlockDriverState *bs, int argc, char **argv) |
| 625 | { |
| 626 | struct timeval t1, t2; |
| 627 | int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
| 628 | int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
| 629 | int c, cnt; |
| 630 | char *buf; |
| 631 | int64_t offset; |
| 632 | int count; |
| 633 | /* Some compilers get confused and warn if this is not initialized. */ |
| 634 | int total = 0; |
| 635 | int pattern = 0, pattern_offset = 0, pattern_count = 0; |
| 636 | |
| 637 | while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
| 638 | switch (c) { |
| 639 | case 'b': |
| 640 | bflag = 1; |
| 641 | break; |
| 642 | case 'C': |
| 643 | Cflag = 1; |
| 644 | break; |
| 645 | case 'l': |
| 646 | lflag = 1; |
| 647 | pattern_count = cvtnum(optarg); |
| 648 | if (pattern_count < 0) { |
| 649 | printf("non-numeric length argument -- %s\n", optarg); |
| 650 | return 0; |
| 651 | } |
| 652 | break; |
| 653 | case 'p': |
| 654 | pflag = 1; |
| 655 | break; |
| 656 | case 'P': |
| 657 | Pflag = 1; |
| 658 | pattern = parse_pattern(optarg); |
| 659 | if (pattern < 0) { |
| 660 | return 0; |
| 661 | } |
| 662 | break; |
| 663 | case 'q': |
| 664 | qflag = 1; |
| 665 | break; |
| 666 | case 's': |
| 667 | sflag = 1; |
| 668 | pattern_offset = cvtnum(optarg); |
| 669 | if (pattern_offset < 0) { |
| 670 | printf("non-numeric length argument -- %s\n", optarg); |
| 671 | return 0; |
| 672 | } |
| 673 | break; |
| 674 | case 'v': |
| 675 | vflag = 1; |
| 676 | break; |
| 677 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 678 | return qemuio_command_usage(&read_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 679 | } |
| 680 | } |
| 681 | |
| 682 | if (optind != argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 683 | return qemuio_command_usage(&read_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | if (bflag && pflag) { |
| 687 | printf("-b and -p cannot be specified at the same time\n"); |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | offset = cvtnum(argv[optind]); |
| 692 | if (offset < 0) { |
| 693 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | optind++; |
| 698 | count = cvtnum(argv[optind]); |
| 699 | if (count < 0) { |
| 700 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | if (!Pflag && (lflag || sflag)) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 705 | return qemuio_command_usage(&read_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 706 | } |
| 707 | |
| 708 | if (!lflag) { |
| 709 | pattern_count = count - pattern_offset; |
| 710 | } |
| 711 | |
| 712 | if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
| 713 | printf("pattern verification range exceeds end of read data\n"); |
| 714 | return 0; |
| 715 | } |
| 716 | |
| 717 | if (!pflag) { |
| 718 | if (offset & 0x1ff) { |
| 719 | printf("offset %" PRId64 " is not sector aligned\n", |
| 720 | offset); |
| 721 | return 0; |
| 722 | } |
| 723 | if (count & 0x1ff) { |
| 724 | printf("count %d is not sector aligned\n", |
| 725 | count); |
| 726 | return 0; |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | buf = qemu_io_alloc(bs, count, 0xab); |
| 731 | |
| 732 | gettimeofday(&t1, NULL); |
| 733 | if (pflag) { |
| 734 | cnt = do_pread(bs, buf, offset, count, &total); |
| 735 | } else if (bflag) { |
| 736 | cnt = do_load_vmstate(bs, buf, offset, count, &total); |
| 737 | } else { |
| 738 | cnt = do_read(bs, buf, offset, count, &total); |
| 739 | } |
| 740 | gettimeofday(&t2, NULL); |
| 741 | |
| 742 | if (cnt < 0) { |
| 743 | printf("read failed: %s\n", strerror(-cnt)); |
| 744 | goto out; |
| 745 | } |
| 746 | |
| 747 | if (Pflag) { |
| 748 | void *cmp_buf = g_malloc(pattern_count); |
| 749 | memset(cmp_buf, pattern, pattern_count); |
| 750 | if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { |
| 751 | printf("Pattern verification failed at offset %" |
| 752 | PRId64 ", %d bytes\n", |
| 753 | offset + pattern_offset, pattern_count); |
| 754 | } |
| 755 | g_free(cmp_buf); |
| 756 | } |
| 757 | |
| 758 | if (qflag) { |
| 759 | goto out; |
| 760 | } |
| 761 | |
| 762 | if (vflag) { |
| 763 | dump_buffer(buf, offset, count); |
| 764 | } |
| 765 | |
| 766 | /* Finally, report back -- -C gives a parsable format */ |
| 767 | t2 = tsub(t2, t1); |
| 768 | print_report("read", &t2, offset, count, total, cnt, Cflag); |
| 769 | |
| 770 | out: |
| 771 | qemu_io_free(buf); |
| 772 | |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | static void readv_help(void) |
| 777 | { |
| 778 | printf( |
| 779 | "\n" |
| 780 | " reads a range of bytes from the given offset into multiple buffers\n" |
| 781 | "\n" |
| 782 | " Example:\n" |
| 783 | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" |
| 784 | "\n" |
| 785 | " Reads a segment of the currently open file, optionally dumping it to the\n" |
| 786 | " standard output stream (with -v option) for subsequent inspection.\n" |
| 787 | " Uses multiple iovec buffers if more than one byte range is specified.\n" |
| 788 | " -C, -- report statistics in a machine parsable format\n" |
| 789 | " -P, -- use a pattern to verify read data\n" |
| 790 | " -v, -- dump buffer to standard output\n" |
| 791 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 792 | "\n"); |
| 793 | } |
| 794 | |
| 795 | static int readv_f(BlockDriverState *bs, int argc, char **argv); |
| 796 | |
| 797 | static const cmdinfo_t readv_cmd = { |
| 798 | .name = "readv", |
| 799 | .cfunc = readv_f, |
| 800 | .argmin = 2, |
| 801 | .argmax = -1, |
| 802 | .args = "[-Cqv] [-P pattern ] off len [len..]", |
| 803 | .oneline = "reads a number of bytes at a specified offset", |
| 804 | .help = readv_help, |
| 805 | }; |
| 806 | |
| 807 | static int readv_f(BlockDriverState *bs, int argc, char **argv) |
| 808 | { |
| 809 | struct timeval t1, t2; |
| 810 | int Cflag = 0, qflag = 0, vflag = 0; |
| 811 | int c, cnt; |
| 812 | char *buf; |
| 813 | int64_t offset; |
| 814 | /* Some compilers get confused and warn if this is not initialized. */ |
| 815 | int total = 0; |
| 816 | int nr_iov; |
| 817 | QEMUIOVector qiov; |
| 818 | int pattern = 0; |
| 819 | int Pflag = 0; |
| 820 | |
| 821 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 822 | switch (c) { |
| 823 | case 'C': |
| 824 | Cflag = 1; |
| 825 | break; |
| 826 | case 'P': |
| 827 | Pflag = 1; |
| 828 | pattern = parse_pattern(optarg); |
| 829 | if (pattern < 0) { |
| 830 | return 0; |
| 831 | } |
| 832 | break; |
| 833 | case 'q': |
| 834 | qflag = 1; |
| 835 | break; |
| 836 | case 'v': |
| 837 | vflag = 1; |
| 838 | break; |
| 839 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 840 | return qemuio_command_usage(&readv_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 841 | } |
| 842 | } |
| 843 | |
| 844 | if (optind > argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 845 | return qemuio_command_usage(&readv_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | |
| 849 | offset = cvtnum(argv[optind]); |
| 850 | if (offset < 0) { |
| 851 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 852 | return 0; |
| 853 | } |
| 854 | optind++; |
| 855 | |
| 856 | if (offset & 0x1ff) { |
| 857 | printf("offset %" PRId64 " is not sector aligned\n", |
| 858 | offset); |
| 859 | return 0; |
| 860 | } |
| 861 | |
| 862 | nr_iov = argc - optind; |
| 863 | buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab); |
| 864 | if (buf == NULL) { |
| 865 | return 0; |
| 866 | } |
| 867 | |
| 868 | gettimeofday(&t1, NULL); |
| 869 | cnt = do_aio_readv(bs, &qiov, offset, &total); |
| 870 | gettimeofday(&t2, NULL); |
| 871 | |
| 872 | if (cnt < 0) { |
| 873 | printf("readv failed: %s\n", strerror(-cnt)); |
| 874 | goto out; |
| 875 | } |
| 876 | |
| 877 | if (Pflag) { |
| 878 | void *cmp_buf = g_malloc(qiov.size); |
| 879 | memset(cmp_buf, pattern, qiov.size); |
| 880 | if (memcmp(buf, cmp_buf, qiov.size)) { |
| 881 | printf("Pattern verification failed at offset %" |
| 882 | PRId64 ", %zd bytes\n", offset, qiov.size); |
| 883 | } |
| 884 | g_free(cmp_buf); |
| 885 | } |
| 886 | |
| 887 | if (qflag) { |
| 888 | goto out; |
| 889 | } |
| 890 | |
| 891 | if (vflag) { |
| 892 | dump_buffer(buf, offset, qiov.size); |
| 893 | } |
| 894 | |
| 895 | /* Finally, report back -- -C gives a parsable format */ |
| 896 | t2 = tsub(t2, t1); |
| 897 | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); |
| 898 | |
| 899 | out: |
| 900 | qemu_iovec_destroy(&qiov); |
| 901 | qemu_io_free(buf); |
| 902 | return 0; |
| 903 | } |
| 904 | |
| 905 | static void write_help(void) |
| 906 | { |
| 907 | printf( |
| 908 | "\n" |
| 909 | " writes a range of bytes from the given offset\n" |
| 910 | "\n" |
| 911 | " Example:\n" |
| 912 | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" |
| 913 | "\n" |
| 914 | " Writes into a segment of the currently open file, using a buffer\n" |
| 915 | " filled with a set pattern (0xcdcdcdcd).\n" |
| 916 | " -b, -- write to the VM state rather than the virtual disk\n" |
| 917 | " -c, -- write compressed data with bdrv_write_compressed\n" |
| 918 | " -p, -- use bdrv_pwrite to write the file\n" |
| 919 | " -P, -- use different pattern to fill file\n" |
| 920 | " -C, -- report statistics in a machine parsable format\n" |
| 921 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 922 | " -z, -- write zeroes using bdrv_co_write_zeroes\n" |
| 923 | "\n"); |
| 924 | } |
| 925 | |
| 926 | static int write_f(BlockDriverState *bs, int argc, char **argv); |
| 927 | |
| 928 | static const cmdinfo_t write_cmd = { |
| 929 | .name = "write", |
| 930 | .altname = "w", |
| 931 | .cfunc = write_f, |
| 932 | .argmin = 2, |
| 933 | .argmax = -1, |
| 934 | .args = "[-bcCpqz] [-P pattern ] off len", |
| 935 | .oneline = "writes a number of bytes at a specified offset", |
| 936 | .help = write_help, |
| 937 | }; |
| 938 | |
| 939 | static int write_f(BlockDriverState *bs, int argc, char **argv) |
| 940 | { |
| 941 | struct timeval t1, t2; |
| 942 | int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; |
| 943 | int cflag = 0; |
| 944 | int c, cnt; |
| 945 | char *buf = NULL; |
| 946 | int64_t offset; |
| 947 | int count; |
| 948 | /* Some compilers get confused and warn if this is not initialized. */ |
| 949 | int total = 0; |
| 950 | int pattern = 0xcd; |
| 951 | |
| 952 | while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { |
| 953 | switch (c) { |
| 954 | case 'b': |
| 955 | bflag = 1; |
| 956 | break; |
| 957 | case 'c': |
| 958 | cflag = 1; |
| 959 | break; |
| 960 | case 'C': |
| 961 | Cflag = 1; |
| 962 | break; |
| 963 | case 'p': |
| 964 | pflag = 1; |
| 965 | break; |
| 966 | case 'P': |
| 967 | Pflag = 1; |
| 968 | pattern = parse_pattern(optarg); |
| 969 | if (pattern < 0) { |
| 970 | return 0; |
| 971 | } |
| 972 | break; |
| 973 | case 'q': |
| 974 | qflag = 1; |
| 975 | break; |
| 976 | case 'z': |
| 977 | zflag = 1; |
| 978 | break; |
| 979 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 980 | return qemuio_command_usage(&write_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 981 | } |
| 982 | } |
| 983 | |
| 984 | if (optind != argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 985 | return qemuio_command_usage(&write_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 986 | } |
| 987 | |
| 988 | if (bflag + pflag + zflag > 1) { |
| 989 | printf("-b, -p, or -z cannot be specified at the same time\n"); |
| 990 | return 0; |
| 991 | } |
| 992 | |
| 993 | if (zflag && Pflag) { |
| 994 | printf("-z and -P cannot be specified at the same time\n"); |
| 995 | return 0; |
| 996 | } |
| 997 | |
| 998 | offset = cvtnum(argv[optind]); |
| 999 | if (offset < 0) { |
| 1000 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | optind++; |
| 1005 | count = cvtnum(argv[optind]); |
| 1006 | if (count < 0) { |
| 1007 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1008 | return 0; |
| 1009 | } |
| 1010 | |
| 1011 | if (!pflag) { |
| 1012 | if (offset & 0x1ff) { |
| 1013 | printf("offset %" PRId64 " is not sector aligned\n", |
| 1014 | offset); |
| 1015 | return 0; |
| 1016 | } |
| 1017 | |
| 1018 | if (count & 0x1ff) { |
| 1019 | printf("count %d is not sector aligned\n", |
| 1020 | count); |
| 1021 | return 0; |
| 1022 | } |
| 1023 | } |
| 1024 | |
| 1025 | if (!zflag) { |
| 1026 | buf = qemu_io_alloc(bs, count, pattern); |
| 1027 | } |
| 1028 | |
| 1029 | gettimeofday(&t1, NULL); |
| 1030 | if (pflag) { |
| 1031 | cnt = do_pwrite(bs, buf, offset, count, &total); |
| 1032 | } else if (bflag) { |
| 1033 | cnt = do_save_vmstate(bs, buf, offset, count, &total); |
| 1034 | } else if (zflag) { |
| 1035 | cnt = do_co_write_zeroes(bs, offset, count, &total); |
| 1036 | } else if (cflag) { |
| 1037 | cnt = do_write_compressed(bs, buf, offset, count, &total); |
| 1038 | } else { |
| 1039 | cnt = do_write(bs, buf, offset, count, &total); |
| 1040 | } |
| 1041 | gettimeofday(&t2, NULL); |
| 1042 | |
| 1043 | if (cnt < 0) { |
| 1044 | printf("write failed: %s\n", strerror(-cnt)); |
| 1045 | goto out; |
| 1046 | } |
| 1047 | |
| 1048 | if (qflag) { |
| 1049 | goto out; |
| 1050 | } |
| 1051 | |
| 1052 | /* Finally, report back -- -C gives a parsable format */ |
| 1053 | t2 = tsub(t2, t1); |
| 1054 | print_report("wrote", &t2, offset, count, total, cnt, Cflag); |
| 1055 | |
| 1056 | out: |
| 1057 | if (!zflag) { |
| 1058 | qemu_io_free(buf); |
| 1059 | } |
| 1060 | |
| 1061 | return 0; |
| 1062 | } |
| 1063 | |
| 1064 | static void |
| 1065 | writev_help(void) |
| 1066 | { |
| 1067 | printf( |
| 1068 | "\n" |
| 1069 | " writes a range of bytes from the given offset source from multiple buffers\n" |
| 1070 | "\n" |
| 1071 | " Example:\n" |
| 1072 | " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" |
| 1073 | "\n" |
| 1074 | " Writes into a segment of the currently open file, using a buffer\n" |
| 1075 | " filled with a set pattern (0xcdcdcdcd).\n" |
| 1076 | " -P, -- use different pattern to fill file\n" |
| 1077 | " -C, -- report statistics in a machine parsable format\n" |
| 1078 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 1079 | "\n"); |
| 1080 | } |
| 1081 | |
| 1082 | static int writev_f(BlockDriverState *bs, int argc, char **argv); |
| 1083 | |
| 1084 | static const cmdinfo_t writev_cmd = { |
| 1085 | .name = "writev", |
| 1086 | .cfunc = writev_f, |
| 1087 | .argmin = 2, |
| 1088 | .argmax = -1, |
| 1089 | .args = "[-Cq] [-P pattern ] off len [len..]", |
| 1090 | .oneline = "writes a number of bytes at a specified offset", |
| 1091 | .help = writev_help, |
| 1092 | }; |
| 1093 | |
| 1094 | static int writev_f(BlockDriverState *bs, int argc, char **argv) |
| 1095 | { |
| 1096 | struct timeval t1, t2; |
| 1097 | int Cflag = 0, qflag = 0; |
| 1098 | int c, cnt; |
| 1099 | char *buf; |
| 1100 | int64_t offset; |
| 1101 | /* Some compilers get confused and warn if this is not initialized. */ |
| 1102 | int total = 0; |
| 1103 | int nr_iov; |
| 1104 | int pattern = 0xcd; |
| 1105 | QEMUIOVector qiov; |
| 1106 | |
| 1107 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 1108 | switch (c) { |
| 1109 | case 'C': |
| 1110 | Cflag = 1; |
| 1111 | break; |
| 1112 | case 'q': |
| 1113 | qflag = 1; |
| 1114 | break; |
| 1115 | case 'P': |
| 1116 | pattern = parse_pattern(optarg); |
| 1117 | if (pattern < 0) { |
| 1118 | return 0; |
| 1119 | } |
| 1120 | break; |
| 1121 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1122 | return qemuio_command_usage(&writev_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | if (optind > argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1127 | return qemuio_command_usage(&writev_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | offset = cvtnum(argv[optind]); |
| 1131 | if (offset < 0) { |
| 1132 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1133 | return 0; |
| 1134 | } |
| 1135 | optind++; |
| 1136 | |
| 1137 | if (offset & 0x1ff) { |
| 1138 | printf("offset %" PRId64 " is not sector aligned\n", |
| 1139 | offset); |
| 1140 | return 0; |
| 1141 | } |
| 1142 | |
| 1143 | nr_iov = argc - optind; |
| 1144 | buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern); |
| 1145 | if (buf == NULL) { |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | gettimeofday(&t1, NULL); |
| 1150 | cnt = do_aio_writev(bs, &qiov, offset, &total); |
| 1151 | gettimeofday(&t2, NULL); |
| 1152 | |
| 1153 | if (cnt < 0) { |
| 1154 | printf("writev failed: %s\n", strerror(-cnt)); |
| 1155 | goto out; |
| 1156 | } |
| 1157 | |
| 1158 | if (qflag) { |
| 1159 | goto out; |
| 1160 | } |
| 1161 | |
| 1162 | /* Finally, report back -- -C gives a parsable format */ |
| 1163 | t2 = tsub(t2, t1); |
| 1164 | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); |
| 1165 | out: |
| 1166 | qemu_iovec_destroy(&qiov); |
| 1167 | qemu_io_free(buf); |
| 1168 | return 0; |
| 1169 | } |
| 1170 | |
| 1171 | static void multiwrite_help(void) |
| 1172 | { |
| 1173 | printf( |
| 1174 | "\n" |
| 1175 | " writes a range of bytes from the given offset source from multiple buffers,\n" |
| 1176 | " in a batch of requests that may be merged by qemu\n" |
| 1177 | "\n" |
| 1178 | " Example:\n" |
| 1179 | " 'multiwrite 512 1k 1k ; 4k 1k'\n" |
| 1180 | " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" |
| 1181 | "\n" |
| 1182 | " Writes into a segment of the currently open file, using a buffer\n" |
| 1183 | " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" |
| 1184 | " by one for each request contained in the multiwrite command.\n" |
| 1185 | " -P, -- use different pattern to fill file\n" |
| 1186 | " -C, -- report statistics in a machine parsable format\n" |
| 1187 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 1188 | "\n"); |
| 1189 | } |
| 1190 | |
| 1191 | static int multiwrite_f(BlockDriverState *bs, int argc, char **argv); |
| 1192 | |
| 1193 | static const cmdinfo_t multiwrite_cmd = { |
| 1194 | .name = "multiwrite", |
| 1195 | .cfunc = multiwrite_f, |
| 1196 | .argmin = 2, |
| 1197 | .argmax = -1, |
| 1198 | .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", |
| 1199 | .oneline = "issues multiple write requests at once", |
| 1200 | .help = multiwrite_help, |
| 1201 | }; |
| 1202 | |
| 1203 | static int multiwrite_f(BlockDriverState *bs, int argc, char **argv) |
| 1204 | { |
| 1205 | struct timeval t1, t2; |
| 1206 | int Cflag = 0, qflag = 0; |
| 1207 | int c, cnt; |
| 1208 | char **buf; |
| 1209 | int64_t offset, first_offset = 0; |
| 1210 | /* Some compilers get confused and warn if this is not initialized. */ |
| 1211 | int total = 0; |
| 1212 | int nr_iov; |
| 1213 | int nr_reqs; |
| 1214 | int pattern = 0xcd; |
| 1215 | QEMUIOVector *qiovs; |
| 1216 | int i; |
| 1217 | BlockRequest *reqs; |
| 1218 | |
| 1219 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 1220 | switch (c) { |
| 1221 | case 'C': |
| 1222 | Cflag = 1; |
| 1223 | break; |
| 1224 | case 'q': |
| 1225 | qflag = 1; |
| 1226 | break; |
| 1227 | case 'P': |
| 1228 | pattern = parse_pattern(optarg); |
| 1229 | if (pattern < 0) { |
| 1230 | return 0; |
| 1231 | } |
| 1232 | break; |
| 1233 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1234 | return qemuio_command_usage(&writev_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | if (optind > argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1239 | return qemuio_command_usage(&writev_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | nr_reqs = 1; |
| 1243 | for (i = optind; i < argc; i++) { |
| 1244 | if (!strcmp(argv[i], ";")) { |
| 1245 | nr_reqs++; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | reqs = g_malloc0(nr_reqs * sizeof(*reqs)); |
| 1250 | buf = g_malloc0(nr_reqs * sizeof(*buf)); |
| 1251 | qiovs = g_malloc(nr_reqs * sizeof(*qiovs)); |
| 1252 | |
| 1253 | for (i = 0; i < nr_reqs && optind < argc; i++) { |
| 1254 | int j; |
| 1255 | |
| 1256 | /* Read the offset of the request */ |
| 1257 | offset = cvtnum(argv[optind]); |
| 1258 | if (offset < 0) { |
| 1259 | printf("non-numeric offset argument -- %s\n", argv[optind]); |
| 1260 | goto out; |
| 1261 | } |
| 1262 | optind++; |
| 1263 | |
| 1264 | if (offset & 0x1ff) { |
| 1265 | printf("offset %lld is not sector aligned\n", |
| 1266 | (long long)offset); |
| 1267 | goto out; |
| 1268 | } |
| 1269 | |
| 1270 | if (i == 0) { |
| 1271 | first_offset = offset; |
| 1272 | } |
| 1273 | |
| 1274 | /* Read lengths for qiov entries */ |
| 1275 | for (j = optind; j < argc; j++) { |
| 1276 | if (!strcmp(argv[j], ";")) { |
| 1277 | break; |
| 1278 | } |
| 1279 | } |
| 1280 | |
| 1281 | nr_iov = j - optind; |
| 1282 | |
| 1283 | /* Build request */ |
| 1284 | buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern); |
| 1285 | if (buf[i] == NULL) { |
| 1286 | goto out; |
| 1287 | } |
| 1288 | |
| 1289 | reqs[i].qiov = &qiovs[i]; |
| 1290 | reqs[i].sector = offset >> 9; |
| 1291 | reqs[i].nb_sectors = reqs[i].qiov->size >> 9; |
| 1292 | |
| 1293 | optind = j + 1; |
| 1294 | |
| 1295 | pattern++; |
| 1296 | } |
| 1297 | |
| 1298 | /* If there were empty requests at the end, ignore them */ |
| 1299 | nr_reqs = i; |
| 1300 | |
| 1301 | gettimeofday(&t1, NULL); |
| 1302 | cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total); |
| 1303 | gettimeofday(&t2, NULL); |
| 1304 | |
| 1305 | if (cnt < 0) { |
| 1306 | printf("aio_multiwrite failed: %s\n", strerror(-cnt)); |
| 1307 | goto out; |
| 1308 | } |
| 1309 | |
| 1310 | if (qflag) { |
| 1311 | goto out; |
| 1312 | } |
| 1313 | |
| 1314 | /* Finally, report back -- -C gives a parsable format */ |
| 1315 | t2 = tsub(t2, t1); |
| 1316 | print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); |
| 1317 | out: |
| 1318 | for (i = 0; i < nr_reqs; i++) { |
| 1319 | qemu_io_free(buf[i]); |
| 1320 | if (reqs[i].qiov != NULL) { |
| 1321 | qemu_iovec_destroy(&qiovs[i]); |
| 1322 | } |
| 1323 | } |
| 1324 | g_free(buf); |
| 1325 | g_free(reqs); |
| 1326 | g_free(qiovs); |
| 1327 | return 0; |
| 1328 | } |
| 1329 | |
| 1330 | struct aio_ctx { |
| 1331 | QEMUIOVector qiov; |
| 1332 | int64_t offset; |
| 1333 | char *buf; |
| 1334 | int qflag; |
| 1335 | int vflag; |
| 1336 | int Cflag; |
| 1337 | int Pflag; |
| 1338 | int pattern; |
| 1339 | struct timeval t1; |
| 1340 | }; |
| 1341 | |
| 1342 | static void aio_write_done(void *opaque, int ret) |
| 1343 | { |
| 1344 | struct aio_ctx *ctx = opaque; |
| 1345 | struct timeval t2; |
| 1346 | |
| 1347 | gettimeofday(&t2, NULL); |
| 1348 | |
| 1349 | |
| 1350 | if (ret < 0) { |
| 1351 | printf("aio_write failed: %s\n", strerror(-ret)); |
| 1352 | goto out; |
| 1353 | } |
| 1354 | |
| 1355 | if (ctx->qflag) { |
| 1356 | goto out; |
| 1357 | } |
| 1358 | |
| 1359 | /* Finally, report back -- -C gives a parsable format */ |
| 1360 | t2 = tsub(t2, ctx->t1); |
| 1361 | print_report("wrote", &t2, ctx->offset, ctx->qiov.size, |
| 1362 | ctx->qiov.size, 1, ctx->Cflag); |
| 1363 | out: |
| 1364 | qemu_io_free(ctx->buf); |
| 1365 | qemu_iovec_destroy(&ctx->qiov); |
| 1366 | g_free(ctx); |
| 1367 | } |
| 1368 | |
| 1369 | static void aio_read_done(void *opaque, int ret) |
| 1370 | { |
| 1371 | struct aio_ctx *ctx = opaque; |
| 1372 | struct timeval t2; |
| 1373 | |
| 1374 | gettimeofday(&t2, NULL); |
| 1375 | |
| 1376 | if (ret < 0) { |
| 1377 | printf("readv failed: %s\n", strerror(-ret)); |
| 1378 | goto out; |
| 1379 | } |
| 1380 | |
| 1381 | if (ctx->Pflag) { |
| 1382 | void *cmp_buf = g_malloc(ctx->qiov.size); |
| 1383 | |
| 1384 | memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
| 1385 | if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { |
| 1386 | printf("Pattern verification failed at offset %" |
| 1387 | PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); |
| 1388 | } |
| 1389 | g_free(cmp_buf); |
| 1390 | } |
| 1391 | |
| 1392 | if (ctx->qflag) { |
| 1393 | goto out; |
| 1394 | } |
| 1395 | |
| 1396 | if (ctx->vflag) { |
| 1397 | dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
| 1398 | } |
| 1399 | |
| 1400 | /* Finally, report back -- -C gives a parsable format */ |
| 1401 | t2 = tsub(t2, ctx->t1); |
| 1402 | print_report("read", &t2, ctx->offset, ctx->qiov.size, |
| 1403 | ctx->qiov.size, 1, ctx->Cflag); |
| 1404 | out: |
| 1405 | qemu_io_free(ctx->buf); |
| 1406 | qemu_iovec_destroy(&ctx->qiov); |
| 1407 | g_free(ctx); |
| 1408 | } |
| 1409 | |
| 1410 | static void aio_read_help(void) |
| 1411 | { |
| 1412 | printf( |
| 1413 | "\n" |
| 1414 | " asynchronously reads a range of bytes from the given offset\n" |
| 1415 | "\n" |
| 1416 | " Example:\n" |
| 1417 | " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" |
| 1418 | "\n" |
| 1419 | " Reads a segment of the currently open file, optionally dumping it to the\n" |
| 1420 | " standard output stream (with -v option) for subsequent inspection.\n" |
| 1421 | " The read is performed asynchronously and the aio_flush command must be\n" |
| 1422 | " used to ensure all outstanding aio requests have been completed.\n" |
| 1423 | " -C, -- report statistics in a machine parsable format\n" |
| 1424 | " -P, -- use a pattern to verify read data\n" |
| 1425 | " -v, -- dump buffer to standard output\n" |
| 1426 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 1427 | "\n"); |
| 1428 | } |
| 1429 | |
| 1430 | static int aio_read_f(BlockDriverState *bs, int argc, char **argv); |
| 1431 | |
| 1432 | static const cmdinfo_t aio_read_cmd = { |
| 1433 | .name = "aio_read", |
| 1434 | .cfunc = aio_read_f, |
| 1435 | .argmin = 2, |
| 1436 | .argmax = -1, |
| 1437 | .args = "[-Cqv] [-P pattern ] off len [len..]", |
| 1438 | .oneline = "asynchronously reads a number of bytes", |
| 1439 | .help = aio_read_help, |
| 1440 | }; |
| 1441 | |
| 1442 | static int aio_read_f(BlockDriverState *bs, int argc, char **argv) |
| 1443 | { |
| 1444 | int nr_iov, c; |
| 1445 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
| 1446 | |
| 1447 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 1448 | switch (c) { |
| 1449 | case 'C': |
| 1450 | ctx->Cflag = 1; |
| 1451 | break; |
| 1452 | case 'P': |
| 1453 | ctx->Pflag = 1; |
| 1454 | ctx->pattern = parse_pattern(optarg); |
| 1455 | if (ctx->pattern < 0) { |
| 1456 | g_free(ctx); |
| 1457 | return 0; |
| 1458 | } |
| 1459 | break; |
| 1460 | case 'q': |
| 1461 | ctx->qflag = 1; |
| 1462 | break; |
| 1463 | case 'v': |
| 1464 | ctx->vflag = 1; |
| 1465 | break; |
| 1466 | default: |
| 1467 | g_free(ctx); |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1468 | return qemuio_command_usage(&aio_read_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | if (optind > argc - 2) { |
| 1473 | g_free(ctx); |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1474 | return qemuio_command_usage(&aio_read_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1475 | } |
| 1476 | |
| 1477 | ctx->offset = cvtnum(argv[optind]); |
| 1478 | if (ctx->offset < 0) { |
| 1479 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1480 | g_free(ctx); |
| 1481 | return 0; |
| 1482 | } |
| 1483 | optind++; |
| 1484 | |
| 1485 | if (ctx->offset & 0x1ff) { |
| 1486 | printf("offset %" PRId64 " is not sector aligned\n", |
| 1487 | ctx->offset); |
| 1488 | g_free(ctx); |
| 1489 | return 0; |
| 1490 | } |
| 1491 | |
| 1492 | nr_iov = argc - optind; |
| 1493 | ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab); |
| 1494 | if (ctx->buf == NULL) { |
| 1495 | g_free(ctx); |
| 1496 | return 0; |
| 1497 | } |
| 1498 | |
| 1499 | gettimeofday(&ctx->t1, NULL); |
| 1500 | bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov, |
| 1501 | ctx->qiov.size >> 9, aio_read_done, ctx); |
| 1502 | return 0; |
| 1503 | } |
| 1504 | |
| 1505 | static void aio_write_help(void) |
| 1506 | { |
| 1507 | printf( |
| 1508 | "\n" |
| 1509 | " asynchronously writes a range of bytes from the given offset source\n" |
| 1510 | " from multiple buffers\n" |
| 1511 | "\n" |
| 1512 | " Example:\n" |
| 1513 | " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" |
| 1514 | "\n" |
| 1515 | " Writes into a segment of the currently open file, using a buffer\n" |
| 1516 | " filled with a set pattern (0xcdcdcdcd).\n" |
| 1517 | " The write is performed asynchronously and the aio_flush command must be\n" |
| 1518 | " used to ensure all outstanding aio requests have been completed.\n" |
| 1519 | " -P, -- use different pattern to fill file\n" |
| 1520 | " -C, -- report statistics in a machine parsable format\n" |
| 1521 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 1522 | "\n"); |
| 1523 | } |
| 1524 | |
| 1525 | static int aio_write_f(BlockDriverState *bs, int argc, char **argv); |
| 1526 | |
| 1527 | static const cmdinfo_t aio_write_cmd = { |
| 1528 | .name = "aio_write", |
| 1529 | .cfunc = aio_write_f, |
| 1530 | .argmin = 2, |
| 1531 | .argmax = -1, |
| 1532 | .args = "[-Cq] [-P pattern ] off len [len..]", |
| 1533 | .oneline = "asynchronously writes a number of bytes", |
| 1534 | .help = aio_write_help, |
| 1535 | }; |
| 1536 | |
| 1537 | static int aio_write_f(BlockDriverState *bs, int argc, char **argv) |
| 1538 | { |
| 1539 | int nr_iov, c; |
| 1540 | int pattern = 0xcd; |
| 1541 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
| 1542 | |
| 1543 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 1544 | switch (c) { |
| 1545 | case 'C': |
| 1546 | ctx->Cflag = 1; |
| 1547 | break; |
| 1548 | case 'q': |
| 1549 | ctx->qflag = 1; |
| 1550 | break; |
| 1551 | case 'P': |
| 1552 | pattern = parse_pattern(optarg); |
| 1553 | if (pattern < 0) { |
| 1554 | g_free(ctx); |
| 1555 | return 0; |
| 1556 | } |
| 1557 | break; |
| 1558 | default: |
| 1559 | g_free(ctx); |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1560 | return qemuio_command_usage(&aio_write_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1561 | } |
| 1562 | } |
| 1563 | |
| 1564 | if (optind > argc - 2) { |
| 1565 | g_free(ctx); |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1566 | return qemuio_command_usage(&aio_write_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | ctx->offset = cvtnum(argv[optind]); |
| 1570 | if (ctx->offset < 0) { |
| 1571 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1572 | g_free(ctx); |
| 1573 | return 0; |
| 1574 | } |
| 1575 | optind++; |
| 1576 | |
| 1577 | if (ctx->offset & 0x1ff) { |
| 1578 | printf("offset %" PRId64 " is not sector aligned\n", |
| 1579 | ctx->offset); |
| 1580 | g_free(ctx); |
| 1581 | return 0; |
| 1582 | } |
| 1583 | |
| 1584 | nr_iov = argc - optind; |
| 1585 | ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern); |
| 1586 | if (ctx->buf == NULL) { |
| 1587 | g_free(ctx); |
| 1588 | return 0; |
| 1589 | } |
| 1590 | |
| 1591 | gettimeofday(&ctx->t1, NULL); |
| 1592 | bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov, |
| 1593 | ctx->qiov.size >> 9, aio_write_done, ctx); |
| 1594 | return 0; |
| 1595 | } |
| 1596 | |
| 1597 | static int aio_flush_f(BlockDriverState *bs, int argc, char **argv) |
| 1598 | { |
| 1599 | bdrv_drain_all(); |
| 1600 | return 0; |
| 1601 | } |
| 1602 | |
| 1603 | static const cmdinfo_t aio_flush_cmd = { |
| 1604 | .name = "aio_flush", |
| 1605 | .cfunc = aio_flush_f, |
| 1606 | .oneline = "completes all outstanding aio requests" |
| 1607 | }; |
| 1608 | |
| 1609 | static int flush_f(BlockDriverState *bs, int argc, char **argv) |
| 1610 | { |
| 1611 | bdrv_flush(bs); |
| 1612 | return 0; |
| 1613 | } |
| 1614 | |
| 1615 | static const cmdinfo_t flush_cmd = { |
| 1616 | .name = "flush", |
| 1617 | .altname = "f", |
| 1618 | .cfunc = flush_f, |
| 1619 | .oneline = "flush all in-core file state to disk", |
| 1620 | }; |
| 1621 | |
| 1622 | static int truncate_f(BlockDriverState *bs, int argc, char **argv) |
| 1623 | { |
| 1624 | int64_t offset; |
| 1625 | int ret; |
| 1626 | |
| 1627 | offset = cvtnum(argv[1]); |
| 1628 | if (offset < 0) { |
| 1629 | printf("non-numeric truncate argument -- %s\n", argv[1]); |
| 1630 | return 0; |
| 1631 | } |
| 1632 | |
| 1633 | ret = bdrv_truncate(bs, offset); |
| 1634 | if (ret < 0) { |
| 1635 | printf("truncate: %s\n", strerror(-ret)); |
| 1636 | return 0; |
| 1637 | } |
| 1638 | |
| 1639 | return 0; |
| 1640 | } |
| 1641 | |
| 1642 | static const cmdinfo_t truncate_cmd = { |
| 1643 | .name = "truncate", |
| 1644 | .altname = "t", |
| 1645 | .cfunc = truncate_f, |
| 1646 | .argmin = 1, |
| 1647 | .argmax = 1, |
| 1648 | .args = "off", |
| 1649 | .oneline = "truncates the current file at the given offset", |
| 1650 | }; |
| 1651 | |
| 1652 | static int length_f(BlockDriverState *bs, int argc, char **argv) |
| 1653 | { |
| 1654 | int64_t size; |
| 1655 | char s1[64]; |
| 1656 | |
| 1657 | size = bdrv_getlength(bs); |
| 1658 | if (size < 0) { |
| 1659 | printf("getlength: %s\n", strerror(-size)); |
| 1660 | return 0; |
| 1661 | } |
| 1662 | |
| 1663 | cvtstr(size, s1, sizeof(s1)); |
| 1664 | printf("%s\n", s1); |
| 1665 | return 0; |
| 1666 | } |
| 1667 | |
| 1668 | |
| 1669 | static const cmdinfo_t length_cmd = { |
| 1670 | .name = "length", |
| 1671 | .altname = "l", |
| 1672 | .cfunc = length_f, |
| 1673 | .oneline = "gets the length of the current file", |
| 1674 | }; |
| 1675 | |
| 1676 | |
| 1677 | static int info_f(BlockDriverState *bs, int argc, char **argv) |
| 1678 | { |
| 1679 | BlockDriverInfo bdi; |
| 1680 | char s1[64], s2[64]; |
| 1681 | int ret; |
| 1682 | |
| 1683 | if (bs->drv && bs->drv->format_name) { |
| 1684 | printf("format name: %s\n", bs->drv->format_name); |
| 1685 | } |
| 1686 | if (bs->drv && bs->drv->protocol_name) { |
| 1687 | printf("format name: %s\n", bs->drv->protocol_name); |
| 1688 | } |
| 1689 | |
| 1690 | ret = bdrv_get_info(bs, &bdi); |
| 1691 | if (ret) { |
| 1692 | return 0; |
| 1693 | } |
| 1694 | |
| 1695 | cvtstr(bdi.cluster_size, s1, sizeof(s1)); |
| 1696 | cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); |
| 1697 | |
| 1698 | printf("cluster size: %s\n", s1); |
| 1699 | printf("vm state offset: %s\n", s2); |
| 1700 | |
| 1701 | return 0; |
| 1702 | } |
| 1703 | |
| 1704 | |
| 1705 | |
| 1706 | static const cmdinfo_t info_cmd = { |
| 1707 | .name = "info", |
| 1708 | .altname = "i", |
| 1709 | .cfunc = info_f, |
| 1710 | .oneline = "prints information about the current file", |
| 1711 | }; |
| 1712 | |
| 1713 | static void discard_help(void) |
| 1714 | { |
| 1715 | printf( |
| 1716 | "\n" |
| 1717 | " discards a range of bytes from the given offset\n" |
| 1718 | "\n" |
| 1719 | " Example:\n" |
| 1720 | " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" |
| 1721 | "\n" |
| 1722 | " Discards a segment of the currently open file.\n" |
| 1723 | " -C, -- report statistics in a machine parsable format\n" |
| 1724 | " -q, -- quiet mode, do not show I/O statistics\n" |
| 1725 | "\n"); |
| 1726 | } |
| 1727 | |
| 1728 | static int discard_f(BlockDriverState *bs, int argc, char **argv); |
| 1729 | |
| 1730 | static const cmdinfo_t discard_cmd = { |
| 1731 | .name = "discard", |
| 1732 | .altname = "d", |
| 1733 | .cfunc = discard_f, |
| 1734 | .argmin = 2, |
| 1735 | .argmax = -1, |
| 1736 | .args = "[-Cq] off len", |
| 1737 | .oneline = "discards a number of bytes at a specified offset", |
| 1738 | .help = discard_help, |
| 1739 | }; |
| 1740 | |
| 1741 | static int discard_f(BlockDriverState *bs, int argc, char **argv) |
| 1742 | { |
| 1743 | struct timeval t1, t2; |
| 1744 | int Cflag = 0, qflag = 0; |
| 1745 | int c, ret; |
| 1746 | int64_t offset; |
| 1747 | int count; |
| 1748 | |
| 1749 | while ((c = getopt(argc, argv, "Cq")) != EOF) { |
| 1750 | switch (c) { |
| 1751 | case 'C': |
| 1752 | Cflag = 1; |
| 1753 | break; |
| 1754 | case 'q': |
| 1755 | qflag = 1; |
| 1756 | break; |
| 1757 | default: |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1758 | return qemuio_command_usage(&discard_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | if (optind != argc - 2) { |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 1763 | return qemuio_command_usage(&discard_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 1764 | } |
| 1765 | |
| 1766 | offset = cvtnum(argv[optind]); |
| 1767 | if (offset < 0) { |
| 1768 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1769 | return 0; |
| 1770 | } |
| 1771 | |
| 1772 | optind++; |
| 1773 | count = cvtnum(argv[optind]); |
| 1774 | if (count < 0) { |
| 1775 | printf("non-numeric length argument -- %s\n", argv[optind]); |
| 1776 | return 0; |
| 1777 | } |
| 1778 | |
| 1779 | gettimeofday(&t1, NULL); |
| 1780 | ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, |
| 1781 | count >> BDRV_SECTOR_BITS); |
| 1782 | gettimeofday(&t2, NULL); |
| 1783 | |
| 1784 | if (ret < 0) { |
| 1785 | printf("discard failed: %s\n", strerror(-ret)); |
| 1786 | goto out; |
| 1787 | } |
| 1788 | |
| 1789 | /* Finally, report back -- -C gives a parsable format */ |
| 1790 | if (!qflag) { |
| 1791 | t2 = tsub(t2, t1); |
| 1792 | print_report("discard", &t2, offset, count, count, 1, Cflag); |
| 1793 | } |
| 1794 | |
| 1795 | out: |
| 1796 | return 0; |
| 1797 | } |
| 1798 | |
| 1799 | static int alloc_f(BlockDriverState *bs, int argc, char **argv) |
| 1800 | { |
| 1801 | int64_t offset, sector_num; |
| 1802 | int nb_sectors, remaining; |
| 1803 | char s1[64]; |
| 1804 | int num, sum_alloc; |
| 1805 | int ret; |
| 1806 | |
| 1807 | offset = cvtnum(argv[1]); |
| 1808 | if (offset < 0) { |
| 1809 | printf("non-numeric offset argument -- %s\n", argv[1]); |
| 1810 | return 0; |
| 1811 | } else if (offset & 0x1ff) { |
| 1812 | printf("offset %" PRId64 " is not sector aligned\n", |
| 1813 | offset); |
| 1814 | return 0; |
| 1815 | } |
| 1816 | |
| 1817 | if (argc == 3) { |
| 1818 | nb_sectors = cvtnum(argv[2]); |
| 1819 | if (nb_sectors < 0) { |
| 1820 | printf("non-numeric length argument -- %s\n", argv[2]); |
| 1821 | return 0; |
| 1822 | } |
| 1823 | } else { |
| 1824 | nb_sectors = 1; |
| 1825 | } |
| 1826 | |
| 1827 | remaining = nb_sectors; |
| 1828 | sum_alloc = 0; |
| 1829 | sector_num = offset >> 9; |
| 1830 | while (remaining) { |
| 1831 | ret = bdrv_is_allocated(bs, sector_num, remaining, &num); |
| 1832 | sector_num += num; |
| 1833 | remaining -= num; |
| 1834 | if (ret) { |
| 1835 | sum_alloc += num; |
| 1836 | } |
| 1837 | if (num == 0) { |
| 1838 | nb_sectors -= remaining; |
| 1839 | remaining = 0; |
| 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | cvtstr(offset, s1, sizeof(s1)); |
| 1844 | |
| 1845 | printf("%d/%d sectors allocated at offset %s\n", |
| 1846 | sum_alloc, nb_sectors, s1); |
| 1847 | return 0; |
| 1848 | } |
| 1849 | |
| 1850 | static const cmdinfo_t alloc_cmd = { |
| 1851 | .name = "alloc", |
| 1852 | .altname = "a", |
| 1853 | .argmin = 1, |
| 1854 | .argmax = 2, |
| 1855 | .cfunc = alloc_f, |
| 1856 | .args = "off [sectors]", |
| 1857 | .oneline = "checks if a sector is present in the file", |
| 1858 | }; |
| 1859 | |
| 1860 | |
| 1861 | static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, |
| 1862 | int64_t nb_sectors, int64_t *pnum) |
| 1863 | { |
| 1864 | int num, num_checked; |
| 1865 | int ret, firstret; |
| 1866 | |
| 1867 | num_checked = MIN(nb_sectors, INT_MAX); |
| 1868 | ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
| 1869 | if (ret < 0) { |
| 1870 | return ret; |
| 1871 | } |
| 1872 | |
| 1873 | firstret = ret; |
| 1874 | *pnum = num; |
| 1875 | |
| 1876 | while (nb_sectors > 0 && ret == firstret) { |
| 1877 | sector_num += num; |
| 1878 | nb_sectors -= num; |
| 1879 | |
| 1880 | num_checked = MIN(nb_sectors, INT_MAX); |
| 1881 | ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); |
| 1882 | if (ret == firstret) { |
| 1883 | *pnum += num; |
| 1884 | } else { |
| 1885 | break; |
| 1886 | } |
| 1887 | } |
| 1888 | |
| 1889 | return firstret; |
| 1890 | } |
| 1891 | |
| 1892 | static int map_f(BlockDriverState *bs, int argc, char **argv) |
| 1893 | { |
| 1894 | int64_t offset; |
| 1895 | int64_t nb_sectors; |
| 1896 | char s1[64]; |
| 1897 | int64_t num; |
| 1898 | int ret; |
| 1899 | const char *retstr; |
| 1900 | |
| 1901 | offset = 0; |
| 1902 | nb_sectors = bs->total_sectors; |
| 1903 | |
| 1904 | do { |
| 1905 | ret = map_is_allocated(bs, offset, nb_sectors, &num); |
| 1906 | if (ret < 0) { |
| 1907 | error_report("Failed to get allocation status: %s", strerror(-ret)); |
| 1908 | return 0; |
| 1909 | } |
| 1910 | |
| 1911 | retstr = ret ? " allocated" : "not allocated"; |
| 1912 | cvtstr(offset << 9ULL, s1, sizeof(s1)); |
| 1913 | printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " |
| 1914 | "at offset %s (%d)\n", |
| 1915 | offset << 9ULL, num, nb_sectors, retstr, s1, ret); |
| 1916 | |
| 1917 | offset += num; |
| 1918 | nb_sectors -= num; |
| 1919 | } while (offset < bs->total_sectors); |
| 1920 | |
| 1921 | return 0; |
| 1922 | } |
| 1923 | |
| 1924 | static const cmdinfo_t map_cmd = { |
| 1925 | .name = "map", |
| 1926 | .argmin = 0, |
| 1927 | .argmax = 0, |
| 1928 | .cfunc = map_f, |
| 1929 | .args = "", |
| 1930 | .oneline = "prints the allocated areas of a file", |
| 1931 | }; |
| 1932 | |
| 1933 | static int break_f(BlockDriverState *bs, int argc, char **argv) |
| 1934 | { |
| 1935 | int ret; |
| 1936 | |
| 1937 | ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); |
| 1938 | if (ret < 0) { |
| 1939 | printf("Could not set breakpoint: %s\n", strerror(-ret)); |
| 1940 | } |
| 1941 | |
| 1942 | return 0; |
| 1943 | } |
| 1944 | |
| 1945 | static const cmdinfo_t break_cmd = { |
| 1946 | .name = "break", |
| 1947 | .argmin = 2, |
| 1948 | .argmax = 2, |
| 1949 | .cfunc = break_f, |
| 1950 | .args = "event tag", |
| 1951 | .oneline = "sets a breakpoint on event and tags the stopped " |
| 1952 | "request as tag", |
| 1953 | }; |
| 1954 | |
| 1955 | static int resume_f(BlockDriverState *bs, int argc, char **argv) |
| 1956 | { |
| 1957 | int ret; |
| 1958 | |
| 1959 | ret = bdrv_debug_resume(bs, argv[1]); |
| 1960 | if (ret < 0) { |
| 1961 | printf("Could not resume request: %s\n", strerror(-ret)); |
| 1962 | } |
| 1963 | |
| 1964 | return 0; |
| 1965 | } |
| 1966 | |
| 1967 | static const cmdinfo_t resume_cmd = { |
| 1968 | .name = "resume", |
| 1969 | .argmin = 1, |
| 1970 | .argmax = 1, |
| 1971 | .cfunc = resume_f, |
| 1972 | .args = "tag", |
| 1973 | .oneline = "resumes the request tagged as tag", |
| 1974 | }; |
| 1975 | |
| 1976 | static int wait_break_f(BlockDriverState *bs, int argc, char **argv) |
| 1977 | { |
| 1978 | while (!bdrv_debug_is_suspended(bs, argv[1])) { |
| 1979 | qemu_aio_wait(); |
| 1980 | } |
| 1981 | |
| 1982 | return 0; |
| 1983 | } |
| 1984 | |
| 1985 | static const cmdinfo_t wait_break_cmd = { |
| 1986 | .name = "wait_break", |
| 1987 | .argmin = 1, |
| 1988 | .argmax = 1, |
| 1989 | .cfunc = wait_break_f, |
| 1990 | .args = "tag", |
| 1991 | .oneline = "waits for the suspension of a request", |
| 1992 | }; |
| 1993 | |
| 1994 | static int abort_f(BlockDriverState *bs, int argc, char **argv) |
| 1995 | { |
| 1996 | abort(); |
| 1997 | } |
| 1998 | |
| 1999 | static const cmdinfo_t abort_cmd = { |
| 2000 | .name = "abort", |
| 2001 | .cfunc = abort_f, |
| 2002 | .flags = CMD_NOFILE_OK, |
| 2003 | .oneline = "simulate a program crash using abort(3)", |
| 2004 | }; |
| 2005 | |
Kevin Wolf | f18a834 | 2013-06-05 14:19:33 +0200 | [diff] [blame] | 2006 | static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
| 2007 | { |
| 2008 | if (cmd) { |
| 2009 | printf("%s ", cmd); |
| 2010 | } else { |
| 2011 | printf("%s ", ct->name); |
| 2012 | if (ct->altname) { |
| 2013 | printf("(or %s) ", ct->altname); |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | if (ct->args) { |
| 2018 | printf("%s ", ct->args); |
| 2019 | } |
| 2020 | printf("-- %s\n", ct->oneline); |
| 2021 | } |
| 2022 | |
| 2023 | static void help_onecmd(const char *cmd, const cmdinfo_t *ct) |
| 2024 | { |
| 2025 | help_oneline(cmd, ct); |
| 2026 | if (ct->help) { |
| 2027 | ct->help(); |
| 2028 | } |
| 2029 | } |
| 2030 | |
| 2031 | static void help_all(void) |
| 2032 | { |
| 2033 | const cmdinfo_t *ct; |
| 2034 | |
| 2035 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { |
| 2036 | help_oneline(ct->name, ct); |
| 2037 | } |
| 2038 | printf("\nUse 'help commandname' for extended help.\n"); |
| 2039 | } |
| 2040 | |
| 2041 | static int help_f(BlockDriverState *bs, int argc, char **argv) |
| 2042 | { |
| 2043 | const cmdinfo_t *ct; |
| 2044 | |
| 2045 | if (argc == 1) { |
| 2046 | help_all(); |
| 2047 | return 0; |
| 2048 | } |
| 2049 | |
| 2050 | ct = find_command(argv[1]); |
| 2051 | if (ct == NULL) { |
| 2052 | printf("command %s not found\n", argv[1]); |
| 2053 | return 0; |
| 2054 | } |
| 2055 | |
| 2056 | help_onecmd(argv[1], ct); |
| 2057 | return 0; |
| 2058 | } |
| 2059 | |
| 2060 | static const cmdinfo_t help_cmd = { |
| 2061 | .name = "help", |
| 2062 | .altname = "?", |
| 2063 | .cfunc = help_f, |
| 2064 | .argmin = 0, |
| 2065 | .argmax = 1, |
| 2066 | .flags = CMD_FLAG_GLOBAL, |
| 2067 | .args = "[command]", |
| 2068 | .oneline = "help for one or all commands", |
| 2069 | }; |
| 2070 | |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 2071 | bool qemuio_command(BlockDriverState *bs, const char *cmd) |
Kevin Wolf | dd58329 | 2013-06-05 14:19:32 +0200 | [diff] [blame] | 2072 | { |
| 2073 | char *input; |
| 2074 | const cmdinfo_t *ct; |
| 2075 | char **v; |
| 2076 | int c; |
| 2077 | bool done = false; |
| 2078 | |
| 2079 | input = g_strdup(cmd); |
| 2080 | v = breakline(input, &c); |
| 2081 | if (c) { |
| 2082 | ct = find_command(v[0]); |
| 2083 | if (ct) { |
Kevin Wolf | 3d21994 | 2013-06-05 14:19:39 +0200 | [diff] [blame] | 2084 | done = command(bs, ct, c, v); |
Kevin Wolf | dd58329 | 2013-06-05 14:19:32 +0200 | [diff] [blame] | 2085 | } else { |
| 2086 | fprintf(stderr, "command \"%s\" not found\n", v[0]); |
| 2087 | } |
| 2088 | } |
| 2089 | g_free(input); |
| 2090 | g_free(v); |
| 2091 | |
| 2092 | return done; |
| 2093 | } |
| 2094 | |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 2095 | static void __attribute((constructor)) init_qemuio_commands(void) |
| 2096 | { |
| 2097 | /* initialize commands */ |
Kevin Wolf | c2cdf5c | 2013-06-05 14:19:36 +0200 | [diff] [blame] | 2098 | qemuio_add_command(&help_cmd); |
| 2099 | qemuio_add_command(&read_cmd); |
| 2100 | qemuio_add_command(&readv_cmd); |
| 2101 | qemuio_add_command(&write_cmd); |
| 2102 | qemuio_add_command(&writev_cmd); |
| 2103 | qemuio_add_command(&multiwrite_cmd); |
| 2104 | qemuio_add_command(&aio_read_cmd); |
| 2105 | qemuio_add_command(&aio_write_cmd); |
| 2106 | qemuio_add_command(&aio_flush_cmd); |
| 2107 | qemuio_add_command(&flush_cmd); |
| 2108 | qemuio_add_command(&truncate_cmd); |
| 2109 | qemuio_add_command(&length_cmd); |
| 2110 | qemuio_add_command(&info_cmd); |
| 2111 | qemuio_add_command(&discard_cmd); |
| 2112 | qemuio_add_command(&alloc_cmd); |
| 2113 | qemuio_add_command(&map_cmd); |
| 2114 | qemuio_add_command(&break_cmd); |
| 2115 | qemuio_add_command(&resume_cmd); |
| 2116 | qemuio_add_command(&wait_break_cmd); |
| 2117 | qemuio_add_command(&abort_cmd); |
Kevin Wolf | 797ac58 | 2013-06-05 14:19:31 +0200 | [diff] [blame] | 2118 | } |