root / qemu-io.c @ 660f11be
History | View | Annotate | Download (30.4 kB)
| 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 |
#include <sys/types.h> |
| 11 |
#include <stdarg.h> |
| 12 |
#include <stdio.h> |
| 13 |
#include <getopt.h> |
| 14 |
|
| 15 |
#include "qemu-common.h" |
| 16 |
#include "block_int.h" |
| 17 |
#include "cmd.h" |
| 18 |
|
| 19 |
#define VERSION "0.0.1" |
| 20 |
|
| 21 |
#define CMD_NOFILE_OK 0x01 |
| 22 |
|
| 23 |
char *progname;
|
| 24 |
static BlockDriverState *bs;
|
| 25 |
|
| 26 |
static int misalign; |
| 27 |
|
| 28 |
/*
|
| 29 |
* Parse the pattern argument to various sub-commands.
|
| 30 |
*
|
| 31 |
* Because the pattern is used as an argument to memset it must evaluate
|
| 32 |
* to an unsigned integer that fits into a single byte.
|
| 33 |
*/
|
| 34 |
static int parse_pattern(const char *arg) |
| 35 |
{
|
| 36 |
char *endptr = NULL; |
| 37 |
long pattern;
|
| 38 |
|
| 39 |
pattern = strtol(arg, &endptr, 0);
|
| 40 |
if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
| 41 |
printf("%s is not a valid pattern byte\n", arg);
|
| 42 |
return -1; |
| 43 |
} |
| 44 |
|
| 45 |
return pattern;
|
| 46 |
} |
| 47 |
|
| 48 |
/*
|
| 49 |
* Memory allocation helpers.
|
| 50 |
*
|
| 51 |
* Make sure memory is aligned by default, or purposefully misaligned if
|
| 52 |
* that is specified on the command line.
|
| 53 |
*/
|
| 54 |
|
| 55 |
#define MISALIGN_OFFSET 16 |
| 56 |
static void *qemu_io_alloc(size_t len, int pattern) |
| 57 |
{
|
| 58 |
void *buf;
|
| 59 |
|
| 60 |
if (misalign)
|
| 61 |
len += MISALIGN_OFFSET; |
| 62 |
buf = qemu_memalign(512, len);
|
| 63 |
memset(buf, pattern, len); |
| 64 |
if (misalign)
|
| 65 |
buf += MISALIGN_OFFSET; |
| 66 |
return buf;
|
| 67 |
} |
| 68 |
|
| 69 |
static void qemu_io_free(void *p) |
| 70 |
{
|
| 71 |
if (misalign)
|
| 72 |
p -= MISALIGN_OFFSET; |
| 73 |
qemu_vfree(p); |
| 74 |
} |
| 75 |
|
| 76 |
static void |
| 77 |
dump_buffer(const void *buffer, int64_t offset, int len) |
| 78 |
{
|
| 79 |
int i, j;
|
| 80 |
const uint8_t *p;
|
| 81 |
|
| 82 |
for (i = 0, p = buffer; i < len; i += 16) { |
| 83 |
const uint8_t *s = p;
|
| 84 |
|
| 85 |
printf("%08llx: ", (unsigned long long)offset + i); |
| 86 |
for (j = 0; j < 16 && i + j < len; j++, p++) |
| 87 |
printf("%02x ", *p);
|
| 88 |
printf(" ");
|
| 89 |
for (j = 0; j < 16 && i + j < len; j++, s++) { |
| 90 |
if (isalnum(*s))
|
| 91 |
printf("%c", *s);
|
| 92 |
else
|
| 93 |
printf(".");
|
| 94 |
} |
| 95 |
printf("\n");
|
| 96 |
} |
| 97 |
} |
| 98 |
|
| 99 |
static void |
| 100 |
print_report(const char *op, struct timeval *t, int64_t offset, |
| 101 |
int count, int total, int cnt, int Cflag) |
| 102 |
{
|
| 103 |
char s1[64], s2[64], ts[64]; |
| 104 |
|
| 105 |
timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
| 106 |
if (!Cflag) {
|
| 107 |
cvtstr((double)total, s1, sizeof(s1)); |
| 108 |
cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
| 109 |
printf("%s %d/%d bytes at offset %lld\n",
|
| 110 |
op, total, count, (long long)offset); |
| 111 |
printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
|
| 112 |
s1, cnt, ts, s2, tdiv((double)cnt, *t));
|
| 113 |
} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
| 114 |
printf("%d,%d,%s,%.3f,%.3f\n",
|
| 115 |
total, cnt, ts, |
| 116 |
tdiv((double)total, *t),
|
| 117 |
tdiv((double)cnt, *t));
|
| 118 |
} |
| 119 |
} |
| 120 |
|
| 121 |
/*
|
| 122 |
* Parse multiple length statements for vectored I/O, and construct an I/O
|
| 123 |
* vector matching it.
|
| 124 |
*/
|
| 125 |
static void * |
| 126 |
create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) |
| 127 |
{
|
| 128 |
size_t *sizes = calloc(nr_iov, sizeof(size_t));
|
| 129 |
size_t count = 0;
|
| 130 |
void *buf, *p;
|
| 131 |
int i;
|
| 132 |
|
| 133 |
for (i = 0; i < nr_iov; i++) { |
| 134 |
char *arg = argv[i];
|
| 135 |
long long len; |
| 136 |
|
| 137 |
len = cvtnum(arg); |
| 138 |
if (len < 0) { |
| 139 |
printf("non-numeric length argument -- %s\n", arg);
|
| 140 |
return NULL; |
| 141 |
} |
| 142 |
|
| 143 |
/* should be SIZE_T_MAX, but that doesn't exist */
|
| 144 |
if (len > UINT_MAX) {
|
| 145 |
printf("too large length argument -- %s\n", arg);
|
| 146 |
return NULL; |
| 147 |
} |
| 148 |
|
| 149 |
if (len & 0x1ff) { |
| 150 |
printf("length argument %lld is not sector aligned\n",
|
| 151 |
len); |
| 152 |
return NULL; |
| 153 |
} |
| 154 |
|
| 155 |
sizes[i] = len; |
| 156 |
count += len; |
| 157 |
} |
| 158 |
|
| 159 |
qemu_iovec_init(qiov, nr_iov); |
| 160 |
|
| 161 |
buf = p = qemu_io_alloc(count, pattern); |
| 162 |
|
| 163 |
for (i = 0; i < nr_iov; i++) { |
| 164 |
qemu_iovec_add(qiov, p, sizes[i]); |
| 165 |
p += sizes[i]; |
| 166 |
} |
| 167 |
|
| 168 |
free(sizes); |
| 169 |
return buf;
|
| 170 |
} |
| 171 |
|
| 172 |
static int do_read(char *buf, int64_t offset, int count, int *total) |
| 173 |
{
|
| 174 |
int ret;
|
| 175 |
|
| 176 |
ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 177 |
if (ret < 0) |
| 178 |
return ret;
|
| 179 |
*total = count; |
| 180 |
return 1; |
| 181 |
} |
| 182 |
|
| 183 |
static int do_write(char *buf, int64_t offset, int count, int *total) |
| 184 |
{
|
| 185 |
int ret;
|
| 186 |
|
| 187 |
ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 188 |
if (ret < 0) |
| 189 |
return ret;
|
| 190 |
*total = count; |
| 191 |
return 1; |
| 192 |
} |
| 193 |
|
| 194 |
static int do_pread(char *buf, int64_t offset, int count, int *total) |
| 195 |
{
|
| 196 |
*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
| 197 |
if (*total < 0) |
| 198 |
return *total;
|
| 199 |
return 1; |
| 200 |
} |
| 201 |
|
| 202 |
static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
| 203 |
{
|
| 204 |
*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
| 205 |
if (*total < 0) |
| 206 |
return *total;
|
| 207 |
return 1; |
| 208 |
} |
| 209 |
|
| 210 |
static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
| 211 |
{
|
| 212 |
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
| 213 |
if (*total < 0) |
| 214 |
return *total;
|
| 215 |
return 1; |
| 216 |
} |
| 217 |
|
| 218 |
static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
| 219 |
{
|
| 220 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
| 221 |
if (*total < 0) |
| 222 |
return *total;
|
| 223 |
return 1; |
| 224 |
} |
| 225 |
|
| 226 |
#define NOT_DONE 0x7fffffff |
| 227 |
static void aio_rw_done(void *opaque, int ret) |
| 228 |
{
|
| 229 |
*(int *)opaque = ret;
|
| 230 |
} |
| 231 |
|
| 232 |
static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
| 233 |
{
|
| 234 |
BlockDriverAIOCB *acb; |
| 235 |
int async_ret = NOT_DONE;
|
| 236 |
|
| 237 |
acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
| 238 |
aio_rw_done, &async_ret); |
| 239 |
if (!acb)
|
| 240 |
return -EIO;
|
| 241 |
|
| 242 |
while (async_ret == NOT_DONE)
|
| 243 |
qemu_aio_wait(); |
| 244 |
|
| 245 |
*total = qiov->size; |
| 246 |
return async_ret < 0 ? async_ret : 1; |
| 247 |
} |
| 248 |
|
| 249 |
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
| 250 |
{
|
| 251 |
BlockDriverAIOCB *acb; |
| 252 |
int async_ret = NOT_DONE;
|
| 253 |
|
| 254 |
acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
| 255 |
aio_rw_done, &async_ret); |
| 256 |
if (!acb)
|
| 257 |
return -EIO;
|
| 258 |
|
| 259 |
while (async_ret == NOT_DONE)
|
| 260 |
qemu_aio_wait(); |
| 261 |
|
| 262 |
*total = qiov->size; |
| 263 |
return async_ret < 0 ? async_ret : 1; |
| 264 |
} |
| 265 |
|
| 266 |
|
| 267 |
static const cmdinfo_t read_cmd; |
| 268 |
|
| 269 |
static void |
| 270 |
read_help(void)
|
| 271 |
{
|
| 272 |
printf( |
| 273 |
"\n"
|
| 274 |
" reads a range of bytes from the given offset\n"
|
| 275 |
"\n"
|
| 276 |
" Example:\n"
|
| 277 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
| 278 |
"\n"
|
| 279 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 280 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 281 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
| 282 |
" -C, -- report statistics in a machine parsable format\n"
|
| 283 |
" -l, -- length for pattern verification (only with -P)\n"
|
| 284 |
" -p, -- use bdrv_pread to read the file\n"
|
| 285 |
" -P, -- use a pattern to verify read data\n"
|
| 286 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 287 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
| 288 |
" -v, -- dump buffer to standard output\n"
|
| 289 |
"\n");
|
| 290 |
} |
| 291 |
|
| 292 |
static int |
| 293 |
read_f(int argc, char **argv) |
| 294 |
{
|
| 295 |
struct timeval t1, t2;
|
| 296 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
| 297 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
| 298 |
int c, cnt;
|
| 299 |
char *buf;
|
| 300 |
int64_t offset; |
| 301 |
int count;
|
| 302 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 303 |
int total = 0; |
| 304 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
| 305 |
|
| 306 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
| 307 |
switch (c) {
|
| 308 |
case 'b': |
| 309 |
bflag = 1;
|
| 310 |
break;
|
| 311 |
case 'C': |
| 312 |
Cflag = 1;
|
| 313 |
break;
|
| 314 |
case 'l': |
| 315 |
lflag = 1;
|
| 316 |
pattern_count = cvtnum(optarg); |
| 317 |
if (pattern_count < 0) { |
| 318 |
printf("non-numeric length argument -- %s\n", optarg);
|
| 319 |
return 0; |
| 320 |
} |
| 321 |
break;
|
| 322 |
case 'p': |
| 323 |
pflag = 1;
|
| 324 |
break;
|
| 325 |
case 'P': |
| 326 |
Pflag = 1;
|
| 327 |
pattern = parse_pattern(optarg); |
| 328 |
if (pattern < 0) |
| 329 |
return 0; |
| 330 |
break;
|
| 331 |
case 'q': |
| 332 |
qflag = 1;
|
| 333 |
break;
|
| 334 |
case 's': |
| 335 |
sflag = 1;
|
| 336 |
pattern_offset = cvtnum(optarg); |
| 337 |
if (pattern_offset < 0) { |
| 338 |
printf("non-numeric length argument -- %s\n", optarg);
|
| 339 |
return 0; |
| 340 |
} |
| 341 |
break;
|
| 342 |
case 'v': |
| 343 |
vflag = 1;
|
| 344 |
break;
|
| 345 |
default:
|
| 346 |
return command_usage(&read_cmd);
|
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
if (optind != argc - 2) |
| 351 |
return command_usage(&read_cmd);
|
| 352 |
|
| 353 |
if (bflag && pflag) {
|
| 354 |
printf("-b and -p cannot be specified at the same time\n");
|
| 355 |
return 0; |
| 356 |
} |
| 357 |
|
| 358 |
offset = cvtnum(argv[optind]); |
| 359 |
if (offset < 0) { |
| 360 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 361 |
return 0; |
| 362 |
} |
| 363 |
|
| 364 |
optind++; |
| 365 |
count = cvtnum(argv[optind]); |
| 366 |
if (count < 0) { |
| 367 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 368 |
return 0; |
| 369 |
} |
| 370 |
|
| 371 |
if (!Pflag && (lflag || sflag)) {
|
| 372 |
return command_usage(&read_cmd);
|
| 373 |
} |
| 374 |
|
| 375 |
if (!lflag) {
|
| 376 |
pattern_count = count - pattern_offset; |
| 377 |
} |
| 378 |
|
| 379 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
| 380 |
printf("pattern verfication range exceeds end of read data\n");
|
| 381 |
return 0; |
| 382 |
} |
| 383 |
|
| 384 |
if (!pflag)
|
| 385 |
if (offset & 0x1ff) { |
| 386 |
printf("offset %lld is not sector aligned\n",
|
| 387 |
(long long)offset); |
| 388 |
return 0; |
| 389 |
|
| 390 |
if (count & 0x1ff) { |
| 391 |
printf("count %d is not sector aligned\n",
|
| 392 |
count); |
| 393 |
return 0; |
| 394 |
} |
| 395 |
} |
| 396 |
|
| 397 |
buf = qemu_io_alloc(count, 0xab);
|
| 398 |
|
| 399 |
gettimeofday(&t1, NULL);
|
| 400 |
if (pflag)
|
| 401 |
cnt = do_pread(buf, offset, count, &total); |
| 402 |
else if (bflag) |
| 403 |
cnt = do_load_vmstate(buf, offset, count, &total); |
| 404 |
else
|
| 405 |
cnt = do_read(buf, offset, count, &total); |
| 406 |
gettimeofday(&t2, NULL);
|
| 407 |
|
| 408 |
if (cnt < 0) { |
| 409 |
printf("read failed: %s\n", strerror(-cnt));
|
| 410 |
goto out;
|
| 411 |
} |
| 412 |
|
| 413 |
if (Pflag) {
|
| 414 |
void* cmp_buf = malloc(pattern_count);
|
| 415 |
memset(cmp_buf, pattern, pattern_count); |
| 416 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
| 417 |
printf("Pattern verification failed at offset %lld, "
|
| 418 |
"%d bytes\n",
|
| 419 |
(long long) offset + pattern_offset, pattern_count); |
| 420 |
} |
| 421 |
free(cmp_buf); |
| 422 |
} |
| 423 |
|
| 424 |
if (qflag)
|
| 425 |
goto out;
|
| 426 |
|
| 427 |
if (vflag)
|
| 428 |
dump_buffer(buf, offset, count); |
| 429 |
|
| 430 |
/* Finally, report back -- -C gives a parsable format */
|
| 431 |
t2 = tsub(t2, t1); |
| 432 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
| 433 |
|
| 434 |
out:
|
| 435 |
qemu_io_free(buf); |
| 436 |
|
| 437 |
return 0; |
| 438 |
} |
| 439 |
|
| 440 |
static const cmdinfo_t read_cmd = { |
| 441 |
.name = "read",
|
| 442 |
.altname = "r",
|
| 443 |
.cfunc = read_f, |
| 444 |
.argmin = 2,
|
| 445 |
.argmax = -1,
|
| 446 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
| 447 |
.oneline = "reads a number of bytes at a specified offset",
|
| 448 |
.help = read_help, |
| 449 |
}; |
| 450 |
|
| 451 |
static const cmdinfo_t readv_cmd; |
| 452 |
|
| 453 |
static void |
| 454 |
readv_help(void)
|
| 455 |
{
|
| 456 |
printf( |
| 457 |
"\n"
|
| 458 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
| 459 |
"\n"
|
| 460 |
" Example:\n"
|
| 461 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
| 462 |
"\n"
|
| 463 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 464 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 465 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
| 466 |
" -C, -- report statistics in a machine parsable format\n"
|
| 467 |
" -P, -- use a pattern to verify read data\n"
|
| 468 |
" -v, -- dump buffer to standard output\n"
|
| 469 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 470 |
"\n");
|
| 471 |
} |
| 472 |
|
| 473 |
static int |
| 474 |
readv_f(int argc, char **argv) |
| 475 |
{
|
| 476 |
struct timeval t1, t2;
|
| 477 |
int Cflag = 0, qflag = 0, vflag = 0; |
| 478 |
int c, cnt;
|
| 479 |
char *buf;
|
| 480 |
int64_t offset; |
| 481 |
int total;
|
| 482 |
int nr_iov;
|
| 483 |
QEMUIOVector qiov; |
| 484 |
int pattern = 0; |
| 485 |
int Pflag = 0; |
| 486 |
|
| 487 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 488 |
switch (c) {
|
| 489 |
case 'C': |
| 490 |
Cflag = 1;
|
| 491 |
break;
|
| 492 |
case 'P': |
| 493 |
Pflag = 1;
|
| 494 |
pattern = parse_pattern(optarg); |
| 495 |
if (pattern < 0) |
| 496 |
return 0; |
| 497 |
break;
|
| 498 |
case 'q': |
| 499 |
qflag = 1;
|
| 500 |
break;
|
| 501 |
case 'v': |
| 502 |
vflag = 1;
|
| 503 |
break;
|
| 504 |
default:
|
| 505 |
return command_usage(&readv_cmd);
|
| 506 |
} |
| 507 |
} |
| 508 |
|
| 509 |
if (optind > argc - 2) |
| 510 |
return command_usage(&readv_cmd);
|
| 511 |
|
| 512 |
|
| 513 |
offset = cvtnum(argv[optind]); |
| 514 |
if (offset < 0) { |
| 515 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 516 |
return 0; |
| 517 |
} |
| 518 |
optind++; |
| 519 |
|
| 520 |
if (offset & 0x1ff) { |
| 521 |
printf("offset %lld is not sector aligned\n",
|
| 522 |
(long long)offset); |
| 523 |
return 0; |
| 524 |
} |
| 525 |
|
| 526 |
nr_iov = argc - optind; |
| 527 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
| 528 |
|
| 529 |
gettimeofday(&t1, NULL);
|
| 530 |
cnt = do_aio_readv(&qiov, offset, &total); |
| 531 |
gettimeofday(&t2, NULL);
|
| 532 |
|
| 533 |
if (cnt < 0) { |
| 534 |
printf("readv failed: %s\n", strerror(-cnt));
|
| 535 |
goto out;
|
| 536 |
} |
| 537 |
|
| 538 |
if (Pflag) {
|
| 539 |
void* cmp_buf = malloc(qiov.size);
|
| 540 |
memset(cmp_buf, pattern, qiov.size); |
| 541 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
| 542 |
printf("Pattern verification failed at offset %lld, "
|
| 543 |
"%zd bytes\n",
|
| 544 |
(long long) offset, qiov.size); |
| 545 |
} |
| 546 |
free(cmp_buf); |
| 547 |
} |
| 548 |
|
| 549 |
if (qflag)
|
| 550 |
goto out;
|
| 551 |
|
| 552 |
if (vflag)
|
| 553 |
dump_buffer(buf, offset, qiov.size); |
| 554 |
|
| 555 |
/* Finally, report back -- -C gives a parsable format */
|
| 556 |
t2 = tsub(t2, t1); |
| 557 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
| 558 |
|
| 559 |
out:
|
| 560 |
qemu_io_free(buf); |
| 561 |
return 0; |
| 562 |
} |
| 563 |
|
| 564 |
static const cmdinfo_t readv_cmd = { |
| 565 |
.name = "readv",
|
| 566 |
.cfunc = readv_f, |
| 567 |
.argmin = 2,
|
| 568 |
.argmax = -1,
|
| 569 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
| 570 |
.oneline = "reads a number of bytes at a specified offset",
|
| 571 |
.help = readv_help, |
| 572 |
}; |
| 573 |
|
| 574 |
static const cmdinfo_t write_cmd; |
| 575 |
|
| 576 |
static void |
| 577 |
write_help(void)
|
| 578 |
{
|
| 579 |
printf( |
| 580 |
"\n"
|
| 581 |
" writes a range of bytes from the given offset\n"
|
| 582 |
"\n"
|
| 583 |
" Example:\n"
|
| 584 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
| 585 |
"\n"
|
| 586 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 587 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 588 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
| 589 |
" -p, -- use bdrv_pwrite to write the file\n"
|
| 590 |
" -P, -- use different pattern to fill file\n"
|
| 591 |
" -C, -- report statistics in a machine parsable format\n"
|
| 592 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 593 |
"\n");
|
| 594 |
} |
| 595 |
|
| 596 |
static int |
| 597 |
write_f(int argc, char **argv) |
| 598 |
{
|
| 599 |
struct timeval t1, t2;
|
| 600 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
| 601 |
int c, cnt;
|
| 602 |
char *buf;
|
| 603 |
int64_t offset; |
| 604 |
int count;
|
| 605 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 606 |
int total = 0; |
| 607 |
int pattern = 0xcd; |
| 608 |
|
| 609 |
while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
| 610 |
switch (c) {
|
| 611 |
case 'b': |
| 612 |
bflag = 1;
|
| 613 |
break;
|
| 614 |
case 'C': |
| 615 |
Cflag = 1;
|
| 616 |
break;
|
| 617 |
case 'p': |
| 618 |
pflag = 1;
|
| 619 |
break;
|
| 620 |
case 'P': |
| 621 |
pattern = parse_pattern(optarg); |
| 622 |
if (pattern < 0) |
| 623 |
return 0; |
| 624 |
break;
|
| 625 |
case 'q': |
| 626 |
qflag = 1;
|
| 627 |
break;
|
| 628 |
default:
|
| 629 |
return command_usage(&write_cmd);
|
| 630 |
} |
| 631 |
} |
| 632 |
|
| 633 |
if (optind != argc - 2) |
| 634 |
return command_usage(&write_cmd);
|
| 635 |
|
| 636 |
if (bflag && pflag) {
|
| 637 |
printf("-b and -p cannot be specified at the same time\n");
|
| 638 |
return 0; |
| 639 |
} |
| 640 |
|
| 641 |
offset = cvtnum(argv[optind]); |
| 642 |
if (offset < 0) { |
| 643 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 644 |
return 0; |
| 645 |
} |
| 646 |
|
| 647 |
optind++; |
| 648 |
count = cvtnum(argv[optind]); |
| 649 |
if (count < 0) { |
| 650 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 651 |
return 0; |
| 652 |
} |
| 653 |
|
| 654 |
if (!pflag) {
|
| 655 |
if (offset & 0x1ff) { |
| 656 |
printf("offset %lld is not sector aligned\n",
|
| 657 |
(long long)offset); |
| 658 |
return 0; |
| 659 |
} |
| 660 |
|
| 661 |
if (count & 0x1ff) { |
| 662 |
printf("count %d is not sector aligned\n",
|
| 663 |
count); |
| 664 |
return 0; |
| 665 |
} |
| 666 |
} |
| 667 |
|
| 668 |
buf = qemu_io_alloc(count, pattern); |
| 669 |
|
| 670 |
gettimeofday(&t1, NULL);
|
| 671 |
if (pflag)
|
| 672 |
cnt = do_pwrite(buf, offset, count, &total); |
| 673 |
else if (bflag) |
| 674 |
cnt = do_save_vmstate(buf, offset, count, &total); |
| 675 |
else
|
| 676 |
cnt = do_write(buf, offset, count, &total); |
| 677 |
gettimeofday(&t2, NULL);
|
| 678 |
|
| 679 |
if (cnt < 0) { |
| 680 |
printf("write failed: %s\n", strerror(-cnt));
|
| 681 |
goto out;
|
| 682 |
} |
| 683 |
|
| 684 |
if (qflag)
|
| 685 |
goto out;
|
| 686 |
|
| 687 |
/* Finally, report back -- -C gives a parsable format */
|
| 688 |
t2 = tsub(t2, t1); |
| 689 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
| 690 |
|
| 691 |
out:
|
| 692 |
qemu_io_free(buf); |
| 693 |
|
| 694 |
return 0; |
| 695 |
} |
| 696 |
|
| 697 |
static const cmdinfo_t write_cmd = { |
| 698 |
.name = "write",
|
| 699 |
.altname = "w",
|
| 700 |
.cfunc = write_f, |
| 701 |
.argmin = 2,
|
| 702 |
.argmax = -1,
|
| 703 |
.args = "[-abCpq] [-P pattern ] off len",
|
| 704 |
.oneline = "writes a number of bytes at a specified offset",
|
| 705 |
.help = write_help, |
| 706 |
}; |
| 707 |
|
| 708 |
static const cmdinfo_t writev_cmd; |
| 709 |
|
| 710 |
static void |
| 711 |
writev_help(void)
|
| 712 |
{
|
| 713 |
printf( |
| 714 |
"\n"
|
| 715 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
| 716 |
"\n"
|
| 717 |
" Example:\n"
|
| 718 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
| 719 |
"\n"
|
| 720 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 721 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 722 |
" -P, -- use different pattern to fill file\n"
|
| 723 |
" -C, -- report statistics in a machine parsable format\n"
|
| 724 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 725 |
"\n");
|
| 726 |
} |
| 727 |
|
| 728 |
static int |
| 729 |
writev_f(int argc, char **argv) |
| 730 |
{
|
| 731 |
struct timeval t1, t2;
|
| 732 |
int Cflag = 0, qflag = 0; |
| 733 |
int c, cnt;
|
| 734 |
char *buf;
|
| 735 |
int64_t offset; |
| 736 |
int total;
|
| 737 |
int nr_iov;
|
| 738 |
int pattern = 0xcd; |
| 739 |
QEMUIOVector qiov; |
| 740 |
|
| 741 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 742 |
switch (c) {
|
| 743 |
case 'C': |
| 744 |
Cflag = 1;
|
| 745 |
break;
|
| 746 |
case 'q': |
| 747 |
qflag = 1;
|
| 748 |
break;
|
| 749 |
case 'P': |
| 750 |
pattern = parse_pattern(optarg); |
| 751 |
if (pattern < 0) |
| 752 |
return 0; |
| 753 |
break;
|
| 754 |
default:
|
| 755 |
return command_usage(&writev_cmd);
|
| 756 |
} |
| 757 |
} |
| 758 |
|
| 759 |
if (optind > argc - 2) |
| 760 |
return command_usage(&writev_cmd);
|
| 761 |
|
| 762 |
offset = cvtnum(argv[optind]); |
| 763 |
if (offset < 0) { |
| 764 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 765 |
return 0; |
| 766 |
} |
| 767 |
optind++; |
| 768 |
|
| 769 |
if (offset & 0x1ff) { |
| 770 |
printf("offset %lld is not sector aligned\n",
|
| 771 |
(long long)offset); |
| 772 |
return 0; |
| 773 |
} |
| 774 |
|
| 775 |
nr_iov = argc - optind; |
| 776 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
| 777 |
|
| 778 |
gettimeofday(&t1, NULL);
|
| 779 |
cnt = do_aio_writev(&qiov, offset, &total); |
| 780 |
gettimeofday(&t2, NULL);
|
| 781 |
|
| 782 |
if (cnt < 0) { |
| 783 |
printf("writev failed: %s\n", strerror(-cnt));
|
| 784 |
goto out;
|
| 785 |
} |
| 786 |
|
| 787 |
if (qflag)
|
| 788 |
goto out;
|
| 789 |
|
| 790 |
/* Finally, report back -- -C gives a parsable format */
|
| 791 |
t2 = tsub(t2, t1); |
| 792 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
| 793 |
out:
|
| 794 |
qemu_io_free(buf); |
| 795 |
return 0; |
| 796 |
} |
| 797 |
|
| 798 |
static const cmdinfo_t writev_cmd = { |
| 799 |
.name = "writev",
|
| 800 |
.cfunc = writev_f, |
| 801 |
.argmin = 2,
|
| 802 |
.argmax = -1,
|
| 803 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
| 804 |
.oneline = "writes a number of bytes at a specified offset",
|
| 805 |
.help = writev_help, |
| 806 |
}; |
| 807 |
|
| 808 |
struct aio_ctx {
|
| 809 |
QEMUIOVector qiov; |
| 810 |
int64_t offset; |
| 811 |
char *buf;
|
| 812 |
int qflag;
|
| 813 |
int vflag;
|
| 814 |
int Cflag;
|
| 815 |
int Pflag;
|
| 816 |
int pattern;
|
| 817 |
struct timeval t1;
|
| 818 |
}; |
| 819 |
|
| 820 |
static void |
| 821 |
aio_write_done(void *opaque, int ret) |
| 822 |
{
|
| 823 |
struct aio_ctx *ctx = opaque;
|
| 824 |
struct timeval t2;
|
| 825 |
|
| 826 |
gettimeofday(&t2, NULL);
|
| 827 |
|
| 828 |
|
| 829 |
if (ret < 0) { |
| 830 |
printf("aio_write failed: %s\n", strerror(-ret));
|
| 831 |
goto out;
|
| 832 |
} |
| 833 |
|
| 834 |
if (ctx->qflag) {
|
| 835 |
goto out;
|
| 836 |
} |
| 837 |
|
| 838 |
/* Finally, report back -- -C gives a parsable format */
|
| 839 |
t2 = tsub(t2, ctx->t1); |
| 840 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
| 841 |
ctx->qiov.size, 1, ctx->Cflag);
|
| 842 |
out:
|
| 843 |
qemu_io_free(ctx->buf); |
| 844 |
free(ctx); |
| 845 |
} |
| 846 |
|
| 847 |
static const cmdinfo_t aio_read_cmd; |
| 848 |
|
| 849 |
static void |
| 850 |
aio_read_done(void *opaque, int ret) |
| 851 |
{
|
| 852 |
struct aio_ctx *ctx = opaque;
|
| 853 |
struct timeval t2;
|
| 854 |
|
| 855 |
gettimeofday(&t2, NULL);
|
| 856 |
|
| 857 |
if (ret < 0) { |
| 858 |
printf("readv failed: %s\n", strerror(-ret));
|
| 859 |
goto out;
|
| 860 |
} |
| 861 |
|
| 862 |
if (ctx->Pflag) {
|
| 863 |
void *cmp_buf = malloc(ctx->qiov.size);
|
| 864 |
|
| 865 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
| 866 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
| 867 |
printf("Pattern verification failed at offset %lld, "
|
| 868 |
"%zd bytes\n",
|
| 869 |
(long long) ctx->offset, ctx->qiov.size); |
| 870 |
} |
| 871 |
free(cmp_buf); |
| 872 |
} |
| 873 |
|
| 874 |
if (ctx->qflag) {
|
| 875 |
goto out;
|
| 876 |
} |
| 877 |
|
| 878 |
if (ctx->vflag) {
|
| 879 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
| 880 |
} |
| 881 |
|
| 882 |
/* Finally, report back -- -C gives a parsable format */
|
| 883 |
t2 = tsub(t2, ctx->t1); |
| 884 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
| 885 |
ctx->qiov.size, 1, ctx->Cflag);
|
| 886 |
out:
|
| 887 |
qemu_io_free(ctx->buf); |
| 888 |
free(ctx); |
| 889 |
} |
| 890 |
|
| 891 |
static void |
| 892 |
aio_read_help(void)
|
| 893 |
{
|
| 894 |
printf( |
| 895 |
"\n"
|
| 896 |
" asynchronously reads a range of bytes from the given offset\n"
|
| 897 |
"\n"
|
| 898 |
" Example:\n"
|
| 899 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
| 900 |
"\n"
|
| 901 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 902 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 903 |
" The read is performed asynchronously and should the aio_flush command \n"
|
| 904 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
| 905 |
" -C, -- report statistics in a machine parsable format\n"
|
| 906 |
" -P, -- use a pattern to verify read data\n"
|
| 907 |
" -v, -- dump buffer to standard output\n"
|
| 908 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 909 |
"\n");
|
| 910 |
} |
| 911 |
|
| 912 |
static int |
| 913 |
aio_read_f(int argc, char **argv) |
| 914 |
{
|
| 915 |
int nr_iov, c;
|
| 916 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
| 917 |
BlockDriverAIOCB *acb; |
| 918 |
|
| 919 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 920 |
switch (c) {
|
| 921 |
case 'C': |
| 922 |
ctx->Cflag = 1;
|
| 923 |
break;
|
| 924 |
case 'P': |
| 925 |
ctx->Pflag = 1;
|
| 926 |
ctx->pattern = parse_pattern(optarg); |
| 927 |
if (ctx->pattern < 0) |
| 928 |
return 0; |
| 929 |
break;
|
| 930 |
case 'q': |
| 931 |
ctx->qflag = 1;
|
| 932 |
break;
|
| 933 |
case 'v': |
| 934 |
ctx->vflag = 1;
|
| 935 |
break;
|
| 936 |
default:
|
| 937 |
free(ctx); |
| 938 |
return command_usage(&aio_read_cmd);
|
| 939 |
} |
| 940 |
} |
| 941 |
|
| 942 |
if (optind > argc - 2) { |
| 943 |
free(ctx); |
| 944 |
return command_usage(&aio_read_cmd);
|
| 945 |
} |
| 946 |
|
| 947 |
ctx->offset = cvtnum(argv[optind]); |
| 948 |
if (ctx->offset < 0) { |
| 949 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 950 |
free(ctx); |
| 951 |
return 0; |
| 952 |
} |
| 953 |
optind++; |
| 954 |
|
| 955 |
if (ctx->offset & 0x1ff) { |
| 956 |
printf("offset %lld is not sector aligned\n",
|
| 957 |
(long long)ctx->offset); |
| 958 |
free(ctx); |
| 959 |
return 0; |
| 960 |
} |
| 961 |
|
| 962 |
nr_iov = argc - optind; |
| 963 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
| 964 |
|
| 965 |
gettimeofday(&ctx->t1, NULL);
|
| 966 |
acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
| 967 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
| 968 |
if (!acb) {
|
| 969 |
free(ctx->buf); |
| 970 |
free(ctx); |
| 971 |
return -EIO;
|
| 972 |
} |
| 973 |
|
| 974 |
return 0; |
| 975 |
} |
| 976 |
|
| 977 |
static const cmdinfo_t aio_read_cmd = { |
| 978 |
.name = "aio_read",
|
| 979 |
.cfunc = aio_read_f, |
| 980 |
.argmin = 2,
|
| 981 |
.argmax = -1,
|
| 982 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
| 983 |
.oneline = "asynchronously reads a number of bytes",
|
| 984 |
.help = aio_read_help, |
| 985 |
}; |
| 986 |
|
| 987 |
static const cmdinfo_t aio_write_cmd; |
| 988 |
|
| 989 |
static void |
| 990 |
aio_write_help(void)
|
| 991 |
{
|
| 992 |
printf( |
| 993 |
"\n"
|
| 994 |
" asynchronously writes a range of bytes from the given offset source \n"
|
| 995 |
" from multiple buffers\n"
|
| 996 |
"\n"
|
| 997 |
" Example:\n"
|
| 998 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
| 999 |
"\n"
|
| 1000 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 1001 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 1002 |
" The write is performed asynchronously and should the aio_flush command \n"
|
| 1003 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
| 1004 |
" -P, -- use different pattern to fill file\n"
|
| 1005 |
" -C, -- report statistics in a machine parsable format\n"
|
| 1006 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 1007 |
"\n");
|
| 1008 |
} |
| 1009 |
|
| 1010 |
|
| 1011 |
static int |
| 1012 |
aio_write_f(int argc, char **argv) |
| 1013 |
{
|
| 1014 |
int nr_iov, c;
|
| 1015 |
int pattern = 0xcd; |
| 1016 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
| 1017 |
BlockDriverAIOCB *acb; |
| 1018 |
|
| 1019 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 1020 |
switch (c) {
|
| 1021 |
case 'C': |
| 1022 |
ctx->Cflag = 1;
|
| 1023 |
break;
|
| 1024 |
case 'q': |
| 1025 |
ctx->qflag = 1;
|
| 1026 |
break;
|
| 1027 |
case 'P': |
| 1028 |
pattern = parse_pattern(optarg); |
| 1029 |
if (pattern < 0) |
| 1030 |
return 0; |
| 1031 |
break;
|
| 1032 |
default:
|
| 1033 |
free(ctx); |
| 1034 |
return command_usage(&aio_write_cmd);
|
| 1035 |
} |
| 1036 |
} |
| 1037 |
|
| 1038 |
if (optind > argc - 2) { |
| 1039 |
free(ctx); |
| 1040 |
return command_usage(&aio_write_cmd);
|
| 1041 |
} |
| 1042 |
|
| 1043 |
ctx->offset = cvtnum(argv[optind]); |
| 1044 |
if (ctx->offset < 0) { |
| 1045 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 1046 |
free(ctx); |
| 1047 |
return 0; |
| 1048 |
} |
| 1049 |
optind++; |
| 1050 |
|
| 1051 |
if (ctx->offset & 0x1ff) { |
| 1052 |
printf("offset %lld is not sector aligned\n",
|
| 1053 |
(long long)ctx->offset); |
| 1054 |
free(ctx); |
| 1055 |
return 0; |
| 1056 |
} |
| 1057 |
|
| 1058 |
nr_iov = argc - optind; |
| 1059 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
| 1060 |
|
| 1061 |
gettimeofday(&ctx->t1, NULL);
|
| 1062 |
acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
| 1063 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
| 1064 |
if (!acb) {
|
| 1065 |
free(ctx->buf); |
| 1066 |
free(ctx); |
| 1067 |
return -EIO;
|
| 1068 |
} |
| 1069 |
|
| 1070 |
return 0; |
| 1071 |
} |
| 1072 |
|
| 1073 |
static const cmdinfo_t aio_write_cmd = { |
| 1074 |
.name = "aio_write",
|
| 1075 |
.cfunc = aio_write_f, |
| 1076 |
.argmin = 2,
|
| 1077 |
.argmax = -1,
|
| 1078 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
| 1079 |
.oneline = "asynchronously writes a number of bytes",
|
| 1080 |
.help = aio_write_help, |
| 1081 |
}; |
| 1082 |
|
| 1083 |
static int |
| 1084 |
aio_flush_f(int argc, char **argv) |
| 1085 |
{
|
| 1086 |
qemu_aio_flush(); |
| 1087 |
return 0; |
| 1088 |
} |
| 1089 |
|
| 1090 |
static const cmdinfo_t aio_flush_cmd = { |
| 1091 |
.name = "aio_flush",
|
| 1092 |
.cfunc = aio_flush_f, |
| 1093 |
.oneline = "completes all outstanding aio requets"
|
| 1094 |
}; |
| 1095 |
|
| 1096 |
static int |
| 1097 |
flush_f(int argc, char **argv) |
| 1098 |
{
|
| 1099 |
bdrv_flush(bs); |
| 1100 |
return 0; |
| 1101 |
} |
| 1102 |
|
| 1103 |
static const cmdinfo_t flush_cmd = { |
| 1104 |
.name = "flush",
|
| 1105 |
.altname = "f",
|
| 1106 |
.cfunc = flush_f, |
| 1107 |
.oneline = "flush all in-core file state to disk",
|
| 1108 |
}; |
| 1109 |
|
| 1110 |
static int |
| 1111 |
truncate_f(int argc, char **argv) |
| 1112 |
{
|
| 1113 |
int64_t offset; |
| 1114 |
int ret;
|
| 1115 |
|
| 1116 |
offset = cvtnum(argv[1]);
|
| 1117 |
if (offset < 0) { |
| 1118 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
| 1119 |
return 0; |
| 1120 |
} |
| 1121 |
|
| 1122 |
ret = bdrv_truncate(bs, offset); |
| 1123 |
if (ret < 0) { |
| 1124 |
printf("truncate: %s", strerror(ret));
|
| 1125 |
return 0; |
| 1126 |
} |
| 1127 |
|
| 1128 |
return 0; |
| 1129 |
} |
| 1130 |
|
| 1131 |
static const cmdinfo_t truncate_cmd = { |
| 1132 |
.name = "truncate",
|
| 1133 |
.altname = "t",
|
| 1134 |
.cfunc = truncate_f, |
| 1135 |
.argmin = 1,
|
| 1136 |
.argmax = 1,
|
| 1137 |
.args = "off",
|
| 1138 |
.oneline = "truncates the current file at the given offset",
|
| 1139 |
}; |
| 1140 |
|
| 1141 |
static int |
| 1142 |
length_f(int argc, char **argv) |
| 1143 |
{
|
| 1144 |
int64_t size; |
| 1145 |
char s1[64]; |
| 1146 |
|
| 1147 |
size = bdrv_getlength(bs); |
| 1148 |
if (size < 0) { |
| 1149 |
printf("getlength: %s", strerror(size));
|
| 1150 |
return 0; |
| 1151 |
} |
| 1152 |
|
| 1153 |
cvtstr(size, s1, sizeof(s1));
|
| 1154 |
printf("%s\n", s1);
|
| 1155 |
return 0; |
| 1156 |
} |
| 1157 |
|
| 1158 |
|
| 1159 |
static const cmdinfo_t length_cmd = { |
| 1160 |
.name = "length",
|
| 1161 |
.altname = "l",
|
| 1162 |
.cfunc = length_f, |
| 1163 |
.oneline = "gets the length of the current file",
|
| 1164 |
}; |
| 1165 |
|
| 1166 |
|
| 1167 |
static int |
| 1168 |
info_f(int argc, char **argv) |
| 1169 |
{
|
| 1170 |
BlockDriverInfo bdi; |
| 1171 |
char s1[64], s2[64]; |
| 1172 |
int ret;
|
| 1173 |
|
| 1174 |
if (bs->drv && bs->drv->format_name)
|
| 1175 |
printf("format name: %s\n", bs->drv->format_name);
|
| 1176 |
if (bs->drv && bs->drv->protocol_name)
|
| 1177 |
printf("format name: %s\n", bs->drv->protocol_name);
|
| 1178 |
|
| 1179 |
ret = bdrv_get_info(bs, &bdi); |
| 1180 |
if (ret)
|
| 1181 |
return 0; |
| 1182 |
|
| 1183 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
| 1184 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
| 1185 |
|
| 1186 |
printf("cluster size: %s\n", s1);
|
| 1187 |
printf("vm state offset: %s\n", s2);
|
| 1188 |
|
| 1189 |
return 0; |
| 1190 |
} |
| 1191 |
|
| 1192 |
|
| 1193 |
|
| 1194 |
static const cmdinfo_t info_cmd = { |
| 1195 |
.name = "info",
|
| 1196 |
.altname = "i",
|
| 1197 |
.cfunc = info_f, |
| 1198 |
.oneline = "prints information about the current file",
|
| 1199 |
}; |
| 1200 |
|
| 1201 |
static int |
| 1202 |
alloc_f(int argc, char **argv) |
| 1203 |
{
|
| 1204 |
int64_t offset; |
| 1205 |
int nb_sectors, remaining;
|
| 1206 |
char s1[64]; |
| 1207 |
int num, sum_alloc;
|
| 1208 |
int ret;
|
| 1209 |
|
| 1210 |
offset = cvtnum(argv[1]);
|
| 1211 |
if (offset & 0x1ff) { |
| 1212 |
printf("offset %lld is not sector aligned\n",
|
| 1213 |
(long long)offset); |
| 1214 |
return 0; |
| 1215 |
} |
| 1216 |
|
| 1217 |
if (argc == 3) |
| 1218 |
nb_sectors = cvtnum(argv[2]);
|
| 1219 |
else
|
| 1220 |
nb_sectors = 1;
|
| 1221 |
|
| 1222 |
remaining = nb_sectors; |
| 1223 |
sum_alloc = 0;
|
| 1224 |
while (remaining) {
|
| 1225 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
| 1226 |
remaining -= num; |
| 1227 |
if (ret) {
|
| 1228 |
sum_alloc += num; |
| 1229 |
} |
| 1230 |
} |
| 1231 |
|
| 1232 |
cvtstr(offset, s1, sizeof(s1));
|
| 1233 |
|
| 1234 |
if (nb_sectors == 1) |
| 1235 |
printf("sector allocated at offset %s\n", s1);
|
| 1236 |
else
|
| 1237 |
printf("%d/%d sectors allocated at offset %s\n",
|
| 1238 |
sum_alloc, nb_sectors, s1); |
| 1239 |
return 0; |
| 1240 |
} |
| 1241 |
|
| 1242 |
static const cmdinfo_t alloc_cmd = { |
| 1243 |
.name = "alloc",
|
| 1244 |
.altname = "a",
|
| 1245 |
.argmin = 1,
|
| 1246 |
.argmax = 2,
|
| 1247 |
.cfunc = alloc_f, |
| 1248 |
.args = "off [sectors]",
|
| 1249 |
.oneline = "checks if a sector is present in the file",
|
| 1250 |
}; |
| 1251 |
|
| 1252 |
static int |
| 1253 |
close_f(int argc, char **argv) |
| 1254 |
{
|
| 1255 |
bdrv_close(bs); |
| 1256 |
bs = NULL;
|
| 1257 |
return 0; |
| 1258 |
} |
| 1259 |
|
| 1260 |
static const cmdinfo_t close_cmd = { |
| 1261 |
.name = "close",
|
| 1262 |
.altname = "c",
|
| 1263 |
.cfunc = close_f, |
| 1264 |
.oneline = "close the current open file",
|
| 1265 |
}; |
| 1266 |
|
| 1267 |
static int openfile(char *name, int flags, int growable) |
| 1268 |
{
|
| 1269 |
if (bs) {
|
| 1270 |
fprintf(stderr, "file open already, try 'help close'\n");
|
| 1271 |
return 1; |
| 1272 |
} |
| 1273 |
|
| 1274 |
bs = bdrv_new("hda");
|
| 1275 |
if (!bs)
|
| 1276 |
return 1; |
| 1277 |
|
| 1278 |
if (growable) {
|
| 1279 |
flags |= BDRV_O_FILE; |
| 1280 |
} |
| 1281 |
|
| 1282 |
if (bdrv_open(bs, name, flags) == -1) { |
| 1283 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
| 1284 |
bs = NULL;
|
| 1285 |
return 1; |
| 1286 |
} |
| 1287 |
|
| 1288 |
if (growable) {
|
| 1289 |
bs->growable = 1;
|
| 1290 |
} |
| 1291 |
return 0; |
| 1292 |
} |
| 1293 |
|
| 1294 |
static void |
| 1295 |
open_help(void)
|
| 1296 |
{
|
| 1297 |
printf( |
| 1298 |
"\n"
|
| 1299 |
" opens a new file in the requested mode\n"
|
| 1300 |
"\n"
|
| 1301 |
" Example:\n"
|
| 1302 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
| 1303 |
"\n"
|
| 1304 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
| 1305 |
" -C, -- create new file if it doesn't exist\n"
|
| 1306 |
" -r, -- open file read-only\n"
|
| 1307 |
" -s, -- use snapshot file\n"
|
| 1308 |
" -n, -- disable host cache\n"
|
| 1309 |
" -g, -- allow file to grow (only applies to protocols)"
|
| 1310 |
"\n");
|
| 1311 |
} |
| 1312 |
|
| 1313 |
static const cmdinfo_t open_cmd; |
| 1314 |
|
| 1315 |
static int |
| 1316 |
open_f(int argc, char **argv) |
| 1317 |
{
|
| 1318 |
int flags = 0; |
| 1319 |
int readonly = 0; |
| 1320 |
int growable = 0; |
| 1321 |
int c;
|
| 1322 |
|
| 1323 |
while ((c = getopt(argc, argv, "snCrg")) != EOF) { |
| 1324 |
switch (c) {
|
| 1325 |
case 's': |
| 1326 |
flags |= BDRV_O_SNAPSHOT; |
| 1327 |
break;
|
| 1328 |
case 'n': |
| 1329 |
flags |= BDRV_O_NOCACHE; |
| 1330 |
break;
|
| 1331 |
case 'C': |
| 1332 |
flags |= BDRV_O_CREAT; |
| 1333 |
break;
|
| 1334 |
case 'r': |
| 1335 |
readonly = 1;
|
| 1336 |
break;
|
| 1337 |
case 'g': |
| 1338 |
growable = 1;
|
| 1339 |
break;
|
| 1340 |
default:
|
| 1341 |
return command_usage(&open_cmd);
|
| 1342 |
} |
| 1343 |
} |
| 1344 |
|
| 1345 |
if (readonly)
|
| 1346 |
flags |= BDRV_O_RDONLY; |
| 1347 |
else
|
| 1348 |
flags |= BDRV_O_RDWR; |
| 1349 |
|
| 1350 |
if (optind != argc - 1) |
| 1351 |
return command_usage(&open_cmd);
|
| 1352 |
|
| 1353 |
return openfile(argv[optind], flags, growable);
|
| 1354 |
} |
| 1355 |
|
| 1356 |
static const cmdinfo_t open_cmd = { |
| 1357 |
.name = "open",
|
| 1358 |
.altname = "o",
|
| 1359 |
.cfunc = open_f, |
| 1360 |
.argmin = 1,
|
| 1361 |
.argmax = -1,
|
| 1362 |
.flags = CMD_NOFILE_OK, |
| 1363 |
.args = "[-Crsn] [path]",
|
| 1364 |
.oneline = "open the file specified by path",
|
| 1365 |
.help = open_help, |
| 1366 |
}; |
| 1367 |
|
| 1368 |
static int |
| 1369 |
init_args_command( |
| 1370 |
int index)
|
| 1371 |
{
|
| 1372 |
/* only one device allowed so far */
|
| 1373 |
if (index >= 1) |
| 1374 |
return 0; |
| 1375 |
return ++index;
|
| 1376 |
} |
| 1377 |
|
| 1378 |
static int |
| 1379 |
init_check_command( |
| 1380 |
const cmdinfo_t *ct)
|
| 1381 |
{
|
| 1382 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
| 1383 |
return 1; |
| 1384 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
| 1385 |
fprintf(stderr, "no file open, try 'help open'\n");
|
| 1386 |
return 0; |
| 1387 |
} |
| 1388 |
return 1; |
| 1389 |
} |
| 1390 |
|
| 1391 |
static void usage(const char *name) |
| 1392 |
{
|
| 1393 |
printf( |
| 1394 |
"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
|
| 1395 |
"QEMU Disk exerciser\n"
|
| 1396 |
"\n"
|
| 1397 |
" -C, --create create new file if it doesn't exist\n"
|
| 1398 |
" -c, --cmd command to execute\n"
|
| 1399 |
" -r, --read-only export read-only\n"
|
| 1400 |
" -s, --snapshot use snapshot file\n"
|
| 1401 |
" -n, --nocache disable host cache\n"
|
| 1402 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
| 1403 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
| 1404 |
" -h, --help display this help and exit\n"
|
| 1405 |
" -V, --version output version information and exit\n"
|
| 1406 |
"\n",
|
| 1407 |
name); |
| 1408 |
} |
| 1409 |
|
| 1410 |
|
| 1411 |
int main(int argc, char **argv) |
| 1412 |
{
|
| 1413 |
int readonly = 0; |
| 1414 |
int growable = 0; |
| 1415 |
const char *sopt = "hVc:Crsnmg"; |
| 1416 |
struct option lopt[] = {
|
| 1417 |
{ "help", 0, NULL, 'h' },
|
| 1418 |
{ "version", 0, NULL, 'V' },
|
| 1419 |
{ "offset", 1, NULL, 'o' },
|
| 1420 |
{ "cmd", 1, NULL, 'c' },
|
| 1421 |
{ "create", 0, NULL, 'C' },
|
| 1422 |
{ "read-only", 0, NULL, 'r' },
|
| 1423 |
{ "snapshot", 0, NULL, 's' },
|
| 1424 |
{ "nocache", 0, NULL, 'n' },
|
| 1425 |
{ "misalign", 0, NULL, 'm' },
|
| 1426 |
{ "growable", 0, NULL, 'g' },
|
| 1427 |
{ NULL, 0, NULL, 0 }
|
| 1428 |
}; |
| 1429 |
int c;
|
| 1430 |
int opt_index = 0; |
| 1431 |
int flags = 0; |
| 1432 |
|
| 1433 |
progname = basename(argv[0]);
|
| 1434 |
|
| 1435 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
| 1436 |
switch (c) {
|
| 1437 |
case 's': |
| 1438 |
flags |= BDRV_O_SNAPSHOT; |
| 1439 |
break;
|
| 1440 |
case 'n': |
| 1441 |
flags |= BDRV_O_NOCACHE; |
| 1442 |
break;
|
| 1443 |
case 'c': |
| 1444 |
add_user_command(optarg); |
| 1445 |
break;
|
| 1446 |
case 'C': |
| 1447 |
flags |= BDRV_O_CREAT; |
| 1448 |
break;
|
| 1449 |
case 'r': |
| 1450 |
readonly = 1;
|
| 1451 |
break;
|
| 1452 |
case 'm': |
| 1453 |
misalign = 1;
|
| 1454 |
break;
|
| 1455 |
case 'g': |
| 1456 |
growable = 1;
|
| 1457 |
break;
|
| 1458 |
case 'V': |
| 1459 |
printf("%s version %s\n", progname, VERSION);
|
| 1460 |
exit(0);
|
| 1461 |
case 'h': |
| 1462 |
usage(progname); |
| 1463 |
exit(0);
|
| 1464 |
default:
|
| 1465 |
usage(progname); |
| 1466 |
exit(1);
|
| 1467 |
} |
| 1468 |
} |
| 1469 |
|
| 1470 |
if ((argc - optind) > 1) { |
| 1471 |
usage(progname); |
| 1472 |
exit(1);
|
| 1473 |
} |
| 1474 |
|
| 1475 |
bdrv_init(); |
| 1476 |
|
| 1477 |
/* initialize commands */
|
| 1478 |
quit_init(); |
| 1479 |
help_init(); |
| 1480 |
add_command(&open_cmd); |
| 1481 |
add_command(&close_cmd); |
| 1482 |
add_command(&read_cmd); |
| 1483 |
add_command(&readv_cmd); |
| 1484 |
add_command(&write_cmd); |
| 1485 |
add_command(&writev_cmd); |
| 1486 |
add_command(&aio_read_cmd); |
| 1487 |
add_command(&aio_write_cmd); |
| 1488 |
add_command(&aio_flush_cmd); |
| 1489 |
add_command(&flush_cmd); |
| 1490 |
add_command(&truncate_cmd); |
| 1491 |
add_command(&length_cmd); |
| 1492 |
add_command(&info_cmd); |
| 1493 |
add_command(&alloc_cmd); |
| 1494 |
|
| 1495 |
add_args_command(init_args_command); |
| 1496 |
add_check_command(init_check_command); |
| 1497 |
|
| 1498 |
/* open the device */
|
| 1499 |
if (readonly)
|
| 1500 |
flags |= BDRV_O_RDONLY; |
| 1501 |
else
|
| 1502 |
flags |= BDRV_O_RDWR; |
| 1503 |
|
| 1504 |
if ((argc - optind) == 1) |
| 1505 |
openfile(argv[optind], flags, growable); |
| 1506 |
command_loop(); |
| 1507 |
|
| 1508 |
/*
|
| 1509 |
* Make sure all outstanding requests get flushed the program exits.
|
| 1510 |
*/
|
| 1511 |
qemu_aio_flush(); |
| 1512 |
|
| 1513 |
if (bs)
|
| 1514 |
bdrv_close(bs); |
| 1515 |
return 0; |
| 1516 |
} |