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Commit | Line | Data |
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797ac58c KW |
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 | ||
11 | #include "qemu-common.h" | |
12 | #include "block/block_int.h" | |
13 | #include "cmd.h" | |
14 | ||
15 | #define CMD_NOFILE_OK 0x01 | |
16 | ||
17 | int qemuio_misalign; | |
18 | ||
19 | static int64_t cvtnum(const char *s) | |
20 | { | |
21 | char *end; | |
22 | return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B); | |
23 | } | |
24 | ||
25 | /* | |
26 | * Parse the pattern argument to various sub-commands. | |
27 | * | |
28 | * Because the pattern is used as an argument to memset it must evaluate | |
29 | * to an unsigned integer that fits into a single byte. | |
30 | */ | |
31 | static int parse_pattern(const char *arg) | |
32 | { | |
33 | char *endptr = NULL; | |
34 | long pattern; | |
35 | ||
36 | pattern = strtol(arg, &endptr, 0); | |
37 | if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { | |
38 | printf("%s is not a valid pattern byte\n", arg); | |
39 | return -1; | |
40 | } | |
41 | ||
42 | return pattern; | |
43 | } | |
44 | ||
45 | /* | |
46 | * Memory allocation helpers. | |
47 | * | |
48 | * Make sure memory is aligned by default, or purposefully misaligned if | |
49 | * that is specified on the command line. | |
50 | */ | |
51 | ||
52 | #define MISALIGN_OFFSET 16 | |
53 | static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern) | |
54 | { | |
55 | void *buf; | |
56 | ||
57 | if (qemuio_misalign) { | |
58 | len += MISALIGN_OFFSET; | |
59 | } | |
60 | buf = qemu_blockalign(bs, len); | |
61 | memset(buf, pattern, len); | |
62 | if (qemuio_misalign) { | |
63 | buf += MISALIGN_OFFSET; | |
64 | } | |
65 | return buf; | |
66 | } | |
67 | ||
68 | static void qemu_io_free(void *p) | |
69 | { | |
70 | if (qemuio_misalign) { | |
71 | p -= MISALIGN_OFFSET; | |
72 | } | |
73 | qemu_vfree(p); | |
74 | } | |
75 | ||
76 | static void dump_buffer(const void *buffer, int64_t offset, int len) | |
77 | { | |
78 | int i, j; | |
79 | const uint8_t *p; | |
80 | ||
81 | for (i = 0, p = buffer; i < len; i += 16) { | |
82 | const uint8_t *s = p; | |
83 | ||
84 | printf("%08" PRIx64 ": ", offset + i); | |
85 | for (j = 0; j < 16 && i + j < len; j++, p++) { | |
86 | printf("%02x ", *p); | |
87 | } | |
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 | } | |
96 | printf("\n"); | |
97 | } | |
98 | } | |
99 | ||
100 | static void 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 %" PRId64 "\n", | |
110 | op, total, count, 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(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov, | |
127 | int pattern) | |
128 | { | |
129 | size_t *sizes = g_new0(size_t, nr_iov); | |
130 | size_t count = 0; | |
131 | void *buf = NULL; | |
132 | void *p; | |
133 | int i; | |
134 | ||
135 | for (i = 0; i < nr_iov; i++) { | |
136 | char *arg = argv[i]; | |
137 | int64_t len; | |
138 | ||
139 | len = cvtnum(arg); | |
140 | if (len < 0) { | |
141 | printf("non-numeric length argument -- %s\n", arg); | |
142 | goto fail; | |
143 | } | |
144 | ||
145 | /* should be SIZE_T_MAX, but that doesn't exist */ | |
146 | if (len > INT_MAX) { | |
147 | printf("too large length argument -- %s\n", arg); | |
148 | goto fail; | |
149 | } | |
150 | ||
151 | if (len & 0x1ff) { | |
152 | printf("length argument %" PRId64 | |
153 | " is not sector aligned\n", len); | |
154 | goto fail; | |
155 | } | |
156 | ||
157 | sizes[i] = len; | |
158 | count += len; | |
159 | } | |
160 | ||
161 | qemu_iovec_init(qiov, nr_iov); | |
162 | ||
163 | buf = p = qemu_io_alloc(bs, count, pattern); | |
164 | ||
165 | for (i = 0; i < nr_iov; i++) { | |
166 | qemu_iovec_add(qiov, p, sizes[i]); | |
167 | p += sizes[i]; | |
168 | } | |
169 | ||
170 | fail: | |
171 | g_free(sizes); | |
172 | return buf; | |
173 | } | |
174 | ||
175 | static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count, | |
176 | int *total) | |
177 | { | |
178 | int ret; | |
179 | ||
180 | ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
181 | if (ret < 0) { | |
182 | return ret; | |
183 | } | |
184 | *total = count; | |
185 | return 1; | |
186 | } | |
187 | ||
188 | static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count, | |
189 | int *total) | |
190 | { | |
191 | int ret; | |
192 | ||
193 | ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
194 | if (ret < 0) { | |
195 | return ret; | |
196 | } | |
197 | *total = count; | |
198 | return 1; | |
199 | } | |
200 | ||
201 | static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count, | |
202 | int *total) | |
203 | { | |
204 | *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); | |
205 | if (*total < 0) { | |
206 | return *total; | |
207 | } | |
208 | return 1; | |
209 | } | |
210 | ||
211 | static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count, | |
212 | int *total) | |
213 | { | |
214 | *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); | |
215 | if (*total < 0) { | |
216 | return *total; | |
217 | } | |
218 | return 1; | |
219 | } | |
220 | ||
221 | typedef struct { | |
222 | BlockDriverState *bs; | |
223 | int64_t offset; | |
224 | int count; | |
225 | int *total; | |
226 | int ret; | |
227 | bool done; | |
228 | } CoWriteZeroes; | |
229 | ||
230 | static void coroutine_fn co_write_zeroes_entry(void *opaque) | |
231 | { | |
232 | CoWriteZeroes *data = opaque; | |
233 | ||
234 | data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, | |
235 | data->count / BDRV_SECTOR_SIZE); | |
236 | data->done = true; | |
237 | if (data->ret < 0) { | |
238 | *data->total = data->ret; | |
239 | return; | |
240 | } | |
241 | ||
242 | *data->total = data->count; | |
243 | } | |
244 | ||
245 | static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count, | |
246 | int *total) | |
247 | { | |
248 | Coroutine *co; | |
249 | CoWriteZeroes data = { | |
250 | .bs = bs, | |
251 | .offset = offset, | |
252 | .count = count, | |
253 | .total = total, | |
254 | .done = false, | |
255 | }; | |
256 | ||
257 | co = qemu_coroutine_create(co_write_zeroes_entry); | |
258 | qemu_coroutine_enter(co, &data); | |
259 | while (!data.done) { | |
260 | qemu_aio_wait(); | |
261 | } | |
262 | if (data.ret < 0) { | |
263 | return data.ret; | |
264 | } else { | |
265 | return 1; | |
266 | } | |
267 | } | |
268 | ||
269 | static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset, | |
270 | int count, int *total) | |
271 | { | |
272 | int ret; | |
273 | ||
274 | ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
275 | if (ret < 0) { | |
276 | return ret; | |
277 | } | |
278 | *total = count; | |
279 | return 1; | |
280 | } | |
281 | ||
282 | static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset, | |
283 | int count, int *total) | |
284 | { | |
285 | *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); | |
286 | if (*total < 0) { | |
287 | return *total; | |
288 | } | |
289 | return 1; | |
290 | } | |
291 | ||
292 | static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset, | |
293 | int count, int *total) | |
294 | { | |
295 | *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); | |
296 | if (*total < 0) { | |
297 | return *total; | |
298 | } | |
299 | return 1; | |
300 | } | |
301 | ||
302 | #define NOT_DONE 0x7fffffff | |
303 | static void aio_rw_done(void *opaque, int ret) | |
304 | { | |
305 | *(int *)opaque = ret; | |
306 | } | |
307 | ||
308 | static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov, | |
309 | int64_t offset, int *total) | |
310 | { | |
311 | int async_ret = NOT_DONE; | |
312 | ||
313 | bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, | |
314 | aio_rw_done, &async_ret); | |
315 | while (async_ret == NOT_DONE) { | |
316 | main_loop_wait(false); | |
317 | } | |
318 | ||
319 | *total = qiov->size; | |
320 | return async_ret < 0 ? async_ret : 1; | |
321 | } | |
322 | ||
323 | static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov, | |
324 | int64_t offset, int *total) | |
325 | { | |
326 | int async_ret = NOT_DONE; | |
327 | ||
328 | bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, | |
329 | aio_rw_done, &async_ret); | |
330 | while (async_ret == NOT_DONE) { | |
331 | main_loop_wait(false); | |
332 | } | |
333 | ||
334 | *total = qiov->size; | |
335 | return async_ret < 0 ? async_ret : 1; | |
336 | } | |
337 | ||
338 | struct multiwrite_async_ret { | |
339 | int num_done; | |
340 | int error; | |
341 | }; | |
342 | ||
343 | static void multiwrite_cb(void *opaque, int ret) | |
344 | { | |
345 | struct multiwrite_async_ret *async_ret = opaque; | |
346 | ||
347 | async_ret->num_done++; | |
348 | if (ret < 0) { | |
349 | async_ret->error = ret; | |
350 | } | |
351 | } | |
352 | ||
353 | static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs, | |
354 | int num_reqs, int *total) | |
355 | { | |
356 | int i, ret; | |
357 | struct multiwrite_async_ret async_ret = { | |
358 | .num_done = 0, | |
359 | .error = 0, | |
360 | }; | |
361 | ||
362 | *total = 0; | |
363 | for (i = 0; i < num_reqs; i++) { | |
364 | reqs[i].cb = multiwrite_cb; | |
365 | reqs[i].opaque = &async_ret; | |
366 | *total += reqs[i].qiov->size; | |
367 | } | |
368 | ||
369 | ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); | |
370 | if (ret < 0) { | |
371 | return ret; | |
372 | } | |
373 | ||
374 | while (async_ret.num_done < num_reqs) { | |
375 | main_loop_wait(false); | |
376 | } | |
377 | ||
378 | return async_ret.error < 0 ? async_ret.error : 1; | |
379 | } | |
380 | ||
381 | static void read_help(void) | |
382 | { | |
383 | printf( | |
384 | "\n" | |
385 | " reads a range of bytes from the given offset\n" | |
386 | "\n" | |
387 | " Example:\n" | |
388 | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" | |
389 | "\n" | |
390 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
391 | " standard output stream (with -v option) for subsequent inspection.\n" | |
392 | " -b, -- read from the VM state rather than the virtual disk\n" | |
393 | " -C, -- report statistics in a machine parsable format\n" | |
394 | " -l, -- length for pattern verification (only with -P)\n" | |
395 | " -p, -- use bdrv_pread to read the file\n" | |
396 | " -P, -- use a pattern to verify read data\n" | |
397 | " -q, -- quiet mode, do not show I/O statistics\n" | |
398 | " -s, -- start offset for pattern verification (only with -P)\n" | |
399 | " -v, -- dump buffer to standard output\n" | |
400 | "\n"); | |
401 | } | |
402 | ||
403 | static int read_f(BlockDriverState *bs, int argc, char **argv); | |
404 | ||
405 | static const cmdinfo_t read_cmd = { | |
406 | .name = "read", | |
407 | .altname = "r", | |
408 | .cfunc = read_f, | |
409 | .argmin = 2, | |
410 | .argmax = -1, | |
411 | .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len", | |
412 | .oneline = "reads a number of bytes at a specified offset", | |
413 | .help = read_help, | |
414 | }; | |
415 | ||
416 | static int read_f(BlockDriverState *bs, int argc, char **argv) | |
417 | { | |
418 | struct timeval t1, t2; | |
419 | int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; | |
420 | int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; | |
421 | int c, cnt; | |
422 | char *buf; | |
423 | int64_t offset; | |
424 | int count; | |
425 | /* Some compilers get confused and warn if this is not initialized. */ | |
426 | int total = 0; | |
427 | int pattern = 0, pattern_offset = 0, pattern_count = 0; | |
428 | ||
429 | while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { | |
430 | switch (c) { | |
431 | case 'b': | |
432 | bflag = 1; | |
433 | break; | |
434 | case 'C': | |
435 | Cflag = 1; | |
436 | break; | |
437 | case 'l': | |
438 | lflag = 1; | |
439 | pattern_count = cvtnum(optarg); | |
440 | if (pattern_count < 0) { | |
441 | printf("non-numeric length argument -- %s\n", optarg); | |
442 | return 0; | |
443 | } | |
444 | break; | |
445 | case 'p': | |
446 | pflag = 1; | |
447 | break; | |
448 | case 'P': | |
449 | Pflag = 1; | |
450 | pattern = parse_pattern(optarg); | |
451 | if (pattern < 0) { | |
452 | return 0; | |
453 | } | |
454 | break; | |
455 | case 'q': | |
456 | qflag = 1; | |
457 | break; | |
458 | case 's': | |
459 | sflag = 1; | |
460 | pattern_offset = cvtnum(optarg); | |
461 | if (pattern_offset < 0) { | |
462 | printf("non-numeric length argument -- %s\n", optarg); | |
463 | return 0; | |
464 | } | |
465 | break; | |
466 | case 'v': | |
467 | vflag = 1; | |
468 | break; | |
469 | default: | |
470 | return command_usage(&read_cmd); | |
471 | } | |
472 | } | |
473 | ||
474 | if (optind != argc - 2) { | |
475 | return command_usage(&read_cmd); | |
476 | } | |
477 | ||
478 | if (bflag && pflag) { | |
479 | printf("-b and -p cannot be specified at the same time\n"); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | offset = cvtnum(argv[optind]); | |
484 | if (offset < 0) { | |
485 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | optind++; | |
490 | count = cvtnum(argv[optind]); | |
491 | if (count < 0) { | |
492 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
493 | return 0; | |
494 | } | |
495 | ||
496 | if (!Pflag && (lflag || sflag)) { | |
497 | return command_usage(&read_cmd); | |
498 | } | |
499 | ||
500 | if (!lflag) { | |
501 | pattern_count = count - pattern_offset; | |
502 | } | |
503 | ||
504 | if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { | |
505 | printf("pattern verification range exceeds end of read data\n"); | |
506 | return 0; | |
507 | } | |
508 | ||
509 | if (!pflag) { | |
510 | if (offset & 0x1ff) { | |
511 | printf("offset %" PRId64 " is not sector aligned\n", | |
512 | offset); | |
513 | return 0; | |
514 | } | |
515 | if (count & 0x1ff) { | |
516 | printf("count %d is not sector aligned\n", | |
517 | count); | |
518 | return 0; | |
519 | } | |
520 | } | |
521 | ||
522 | buf = qemu_io_alloc(bs, count, 0xab); | |
523 | ||
524 | gettimeofday(&t1, NULL); | |
525 | if (pflag) { | |
526 | cnt = do_pread(bs, buf, offset, count, &total); | |
527 | } else if (bflag) { | |
528 | cnt = do_load_vmstate(bs, buf, offset, count, &total); | |
529 | } else { | |
530 | cnt = do_read(bs, buf, offset, count, &total); | |
531 | } | |
532 | gettimeofday(&t2, NULL); | |
533 | ||
534 | if (cnt < 0) { | |
535 | printf("read failed: %s\n", strerror(-cnt)); | |
536 | goto out; | |
537 | } | |
538 | ||
539 | if (Pflag) { | |
540 | void *cmp_buf = g_malloc(pattern_count); | |
541 | memset(cmp_buf, pattern, pattern_count); | |
542 | if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { | |
543 | printf("Pattern verification failed at offset %" | |
544 | PRId64 ", %d bytes\n", | |
545 | offset + pattern_offset, pattern_count); | |
546 | } | |
547 | g_free(cmp_buf); | |
548 | } | |
549 | ||
550 | if (qflag) { | |
551 | goto out; | |
552 | } | |
553 | ||
554 | if (vflag) { | |
555 | dump_buffer(buf, offset, count); | |
556 | } | |
557 | ||
558 | /* Finally, report back -- -C gives a parsable format */ | |
559 | t2 = tsub(t2, t1); | |
560 | print_report("read", &t2, offset, count, total, cnt, Cflag); | |
561 | ||
562 | out: | |
563 | qemu_io_free(buf); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static void readv_help(void) | |
569 | { | |
570 | printf( | |
571 | "\n" | |
572 | " reads a range of bytes from the given offset into multiple buffers\n" | |
573 | "\n" | |
574 | " Example:\n" | |
575 | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
576 | "\n" | |
577 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
578 | " standard output stream (with -v option) for subsequent inspection.\n" | |
579 | " Uses multiple iovec buffers if more than one byte range is specified.\n" | |
580 | " -C, -- report statistics in a machine parsable format\n" | |
581 | " -P, -- use a pattern to verify read data\n" | |
582 | " -v, -- dump buffer to standard output\n" | |
583 | " -q, -- quiet mode, do not show I/O statistics\n" | |
584 | "\n"); | |
585 | } | |
586 | ||
587 | static int readv_f(BlockDriverState *bs, int argc, char **argv); | |
588 | ||
589 | static const cmdinfo_t readv_cmd = { | |
590 | .name = "readv", | |
591 | .cfunc = readv_f, | |
592 | .argmin = 2, | |
593 | .argmax = -1, | |
594 | .args = "[-Cqv] [-P pattern ] off len [len..]", | |
595 | .oneline = "reads a number of bytes at a specified offset", | |
596 | .help = readv_help, | |
597 | }; | |
598 | ||
599 | static int readv_f(BlockDriverState *bs, int argc, char **argv) | |
600 | { | |
601 | struct timeval t1, t2; | |
602 | int Cflag = 0, qflag = 0, vflag = 0; | |
603 | int c, cnt; | |
604 | char *buf; | |
605 | int64_t offset; | |
606 | /* Some compilers get confused and warn if this is not initialized. */ | |
607 | int total = 0; | |
608 | int nr_iov; | |
609 | QEMUIOVector qiov; | |
610 | int pattern = 0; | |
611 | int Pflag = 0; | |
612 | ||
613 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { | |
614 | switch (c) { | |
615 | case 'C': | |
616 | Cflag = 1; | |
617 | break; | |
618 | case 'P': | |
619 | Pflag = 1; | |
620 | pattern = parse_pattern(optarg); | |
621 | if (pattern < 0) { | |
622 | return 0; | |
623 | } | |
624 | break; | |
625 | case 'q': | |
626 | qflag = 1; | |
627 | break; | |
628 | case 'v': | |
629 | vflag = 1; | |
630 | break; | |
631 | default: | |
632 | return command_usage(&readv_cmd); | |
633 | } | |
634 | } | |
635 | ||
636 | if (optind > argc - 2) { | |
637 | return command_usage(&readv_cmd); | |
638 | } | |
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 | optind++; | |
647 | ||
648 | if (offset & 0x1ff) { | |
649 | printf("offset %" PRId64 " is not sector aligned\n", | |
650 | offset); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | nr_iov = argc - optind; | |
655 | buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab); | |
656 | if (buf == NULL) { | |
657 | return 0; | |
658 | } | |
659 | ||
660 | gettimeofday(&t1, NULL); | |
661 | cnt = do_aio_readv(bs, &qiov, offset, &total); | |
662 | gettimeofday(&t2, NULL); | |
663 | ||
664 | if (cnt < 0) { | |
665 | printf("readv failed: %s\n", strerror(-cnt)); | |
666 | goto out; | |
667 | } | |
668 | ||
669 | if (Pflag) { | |
670 | void *cmp_buf = g_malloc(qiov.size); | |
671 | memset(cmp_buf, pattern, qiov.size); | |
672 | if (memcmp(buf, cmp_buf, qiov.size)) { | |
673 | printf("Pattern verification failed at offset %" | |
674 | PRId64 ", %zd bytes\n", offset, qiov.size); | |
675 | } | |
676 | g_free(cmp_buf); | |
677 | } | |
678 | ||
679 | if (qflag) { | |
680 | goto out; | |
681 | } | |
682 | ||
683 | if (vflag) { | |
684 | dump_buffer(buf, offset, qiov.size); | |
685 | } | |
686 | ||
687 | /* Finally, report back -- -C gives a parsable format */ | |
688 | t2 = tsub(t2, t1); | |
689 | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); | |
690 | ||
691 | out: | |
692 | qemu_iovec_destroy(&qiov); | |
693 | qemu_io_free(buf); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | static void write_help(void) | |
698 | { | |
699 | printf( | |
700 | "\n" | |
701 | " writes a range of bytes from the given offset\n" | |
702 | "\n" | |
703 | " Example:\n" | |
704 | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" | |
705 | "\n" | |
706 | " Writes into a segment of the currently open file, using a buffer\n" | |
707 | " filled with a set pattern (0xcdcdcdcd).\n" | |
708 | " -b, -- write to the VM state rather than the virtual disk\n" | |
709 | " -c, -- write compressed data with bdrv_write_compressed\n" | |
710 | " -p, -- use bdrv_pwrite to write the file\n" | |
711 | " -P, -- use different pattern to fill file\n" | |
712 | " -C, -- report statistics in a machine parsable format\n" | |
713 | " -q, -- quiet mode, do not show I/O statistics\n" | |
714 | " -z, -- write zeroes using bdrv_co_write_zeroes\n" | |
715 | "\n"); | |
716 | } | |
717 | ||
718 | static int write_f(BlockDriverState *bs, int argc, char **argv); | |
719 | ||
720 | static const cmdinfo_t write_cmd = { | |
721 | .name = "write", | |
722 | .altname = "w", | |
723 | .cfunc = write_f, | |
724 | .argmin = 2, | |
725 | .argmax = -1, | |
726 | .args = "[-bcCpqz] [-P pattern ] off len", | |
727 | .oneline = "writes a number of bytes at a specified offset", | |
728 | .help = write_help, | |
729 | }; | |
730 | ||
731 | static int write_f(BlockDriverState *bs, int argc, char **argv) | |
732 | { | |
733 | struct timeval t1, t2; | |
734 | int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; | |
735 | int cflag = 0; | |
736 | int c, cnt; | |
737 | char *buf = NULL; | |
738 | int64_t offset; | |
739 | int count; | |
740 | /* Some compilers get confused and warn if this is not initialized. */ | |
741 | int total = 0; | |
742 | int pattern = 0xcd; | |
743 | ||
744 | while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { | |
745 | switch (c) { | |
746 | case 'b': | |
747 | bflag = 1; | |
748 | break; | |
749 | case 'c': | |
750 | cflag = 1; | |
751 | break; | |
752 | case 'C': | |
753 | Cflag = 1; | |
754 | break; | |
755 | case 'p': | |
756 | pflag = 1; | |
757 | break; | |
758 | case 'P': | |
759 | Pflag = 1; | |
760 | pattern = parse_pattern(optarg); | |
761 | if (pattern < 0) { | |
762 | return 0; | |
763 | } | |
764 | break; | |
765 | case 'q': | |
766 | qflag = 1; | |
767 | break; | |
768 | case 'z': | |
769 | zflag = 1; | |
770 | break; | |
771 | default: | |
772 | return command_usage(&write_cmd); | |
773 | } | |
774 | } | |
775 | ||
776 | if (optind != argc - 2) { | |
777 | return command_usage(&write_cmd); | |
778 | } | |
779 | ||
780 | if (bflag + pflag + zflag > 1) { | |
781 | printf("-b, -p, or -z cannot be specified at the same time\n"); | |
782 | return 0; | |
783 | } | |
784 | ||
785 | if (zflag && Pflag) { | |
786 | printf("-z and -P cannot be specified at the same time\n"); | |
787 | return 0; | |
788 | } | |
789 | ||
790 | offset = cvtnum(argv[optind]); | |
791 | if (offset < 0) { | |
792 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
793 | return 0; | |
794 | } | |
795 | ||
796 | optind++; | |
797 | count = cvtnum(argv[optind]); | |
798 | if (count < 0) { | |
799 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | if (!pflag) { | |
804 | if (offset & 0x1ff) { | |
805 | printf("offset %" PRId64 " is not sector aligned\n", | |
806 | offset); | |
807 | return 0; | |
808 | } | |
809 | ||
810 | if (count & 0x1ff) { | |
811 | printf("count %d is not sector aligned\n", | |
812 | count); | |
813 | return 0; | |
814 | } | |
815 | } | |
816 | ||
817 | if (!zflag) { | |
818 | buf = qemu_io_alloc(bs, count, pattern); | |
819 | } | |
820 | ||
821 | gettimeofday(&t1, NULL); | |
822 | if (pflag) { | |
823 | cnt = do_pwrite(bs, buf, offset, count, &total); | |
824 | } else if (bflag) { | |
825 | cnt = do_save_vmstate(bs, buf, offset, count, &total); | |
826 | } else if (zflag) { | |
827 | cnt = do_co_write_zeroes(bs, offset, count, &total); | |
828 | } else if (cflag) { | |
829 | cnt = do_write_compressed(bs, buf, offset, count, &total); | |
830 | } else { | |
831 | cnt = do_write(bs, buf, offset, count, &total); | |
832 | } | |
833 | gettimeofday(&t2, NULL); | |
834 | ||
835 | if (cnt < 0) { | |
836 | printf("write failed: %s\n", strerror(-cnt)); | |
837 | goto out; | |
838 | } | |
839 | ||
840 | if (qflag) { | |
841 | goto out; | |
842 | } | |
843 | ||
844 | /* Finally, report back -- -C gives a parsable format */ | |
845 | t2 = tsub(t2, t1); | |
846 | print_report("wrote", &t2, offset, count, total, cnt, Cflag); | |
847 | ||
848 | out: | |
849 | if (!zflag) { | |
850 | qemu_io_free(buf); | |
851 | } | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | static void | |
857 | writev_help(void) | |
858 | { | |
859 | printf( | |
860 | "\n" | |
861 | " writes a range of bytes from the given offset source from multiple buffers\n" | |
862 | "\n" | |
863 | " Example:\n" | |
864 | " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
865 | "\n" | |
866 | " Writes into a segment of the currently open file, using a buffer\n" | |
867 | " filled with a set pattern (0xcdcdcdcd).\n" | |
868 | " -P, -- use different pattern to fill file\n" | |
869 | " -C, -- report statistics in a machine parsable format\n" | |
870 | " -q, -- quiet mode, do not show I/O statistics\n" | |
871 | "\n"); | |
872 | } | |
873 | ||
874 | static int writev_f(BlockDriverState *bs, int argc, char **argv); | |
875 | ||
876 | static const cmdinfo_t writev_cmd = { | |
877 | .name = "writev", | |
878 | .cfunc = writev_f, | |
879 | .argmin = 2, | |
880 | .argmax = -1, | |
881 | .args = "[-Cq] [-P pattern ] off len [len..]", | |
882 | .oneline = "writes a number of bytes at a specified offset", | |
883 | .help = writev_help, | |
884 | }; | |
885 | ||
886 | static int writev_f(BlockDriverState *bs, int argc, char **argv) | |
887 | { | |
888 | struct timeval t1, t2; | |
889 | int Cflag = 0, qflag = 0; | |
890 | int c, cnt; | |
891 | char *buf; | |
892 | int64_t offset; | |
893 | /* Some compilers get confused and warn if this is not initialized. */ | |
894 | int total = 0; | |
895 | int nr_iov; | |
896 | int pattern = 0xcd; | |
897 | QEMUIOVector qiov; | |
898 | ||
899 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
900 | switch (c) { | |
901 | case 'C': | |
902 | Cflag = 1; | |
903 | break; | |
904 | case 'q': | |
905 | qflag = 1; | |
906 | break; | |
907 | case 'P': | |
908 | pattern = parse_pattern(optarg); | |
909 | if (pattern < 0) { | |
910 | return 0; | |
911 | } | |
912 | break; | |
913 | default: | |
914 | return command_usage(&writev_cmd); | |
915 | } | |
916 | } | |
917 | ||
918 | if (optind > argc - 2) { | |
919 | return command_usage(&writev_cmd); | |
920 | } | |
921 | ||
922 | offset = cvtnum(argv[optind]); | |
923 | if (offset < 0) { | |
924 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
925 | return 0; | |
926 | } | |
927 | optind++; | |
928 | ||
929 | if (offset & 0x1ff) { | |
930 | printf("offset %" PRId64 " is not sector aligned\n", | |
931 | offset); | |
932 | return 0; | |
933 | } | |
934 | ||
935 | nr_iov = argc - optind; | |
936 | buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern); | |
937 | if (buf == NULL) { | |
938 | return 0; | |
939 | } | |
940 | ||
941 | gettimeofday(&t1, NULL); | |
942 | cnt = do_aio_writev(bs, &qiov, offset, &total); | |
943 | gettimeofday(&t2, NULL); | |
944 | ||
945 | if (cnt < 0) { | |
946 | printf("writev failed: %s\n", strerror(-cnt)); | |
947 | goto out; | |
948 | } | |
949 | ||
950 | if (qflag) { | |
951 | goto out; | |
952 | } | |
953 | ||
954 | /* Finally, report back -- -C gives a parsable format */ | |
955 | t2 = tsub(t2, t1); | |
956 | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); | |
957 | out: | |
958 | qemu_iovec_destroy(&qiov); | |
959 | qemu_io_free(buf); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | static void multiwrite_help(void) | |
964 | { | |
965 | printf( | |
966 | "\n" | |
967 | " writes a range of bytes from the given offset source from multiple buffers,\n" | |
968 | " in a batch of requests that may be merged by qemu\n" | |
969 | "\n" | |
970 | " Example:\n" | |
971 | " 'multiwrite 512 1k 1k ; 4k 1k'\n" | |
972 | " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" | |
973 | "\n" | |
974 | " Writes into a segment of the currently open file, using a buffer\n" | |
975 | " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" | |
976 | " by one for each request contained in the multiwrite command.\n" | |
977 | " -P, -- use different pattern to fill file\n" | |
978 | " -C, -- report statistics in a machine parsable format\n" | |
979 | " -q, -- quiet mode, do not show I/O statistics\n" | |
980 | "\n"); | |
981 | } | |
982 | ||
983 | static int multiwrite_f(BlockDriverState *bs, int argc, char **argv); | |
984 | ||
985 | static const cmdinfo_t multiwrite_cmd = { | |
986 | .name = "multiwrite", | |
987 | .cfunc = multiwrite_f, | |
988 | .argmin = 2, | |
989 | .argmax = -1, | |
990 | .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", | |
991 | .oneline = "issues multiple write requests at once", | |
992 | .help = multiwrite_help, | |
993 | }; | |
994 | ||
995 | static int multiwrite_f(BlockDriverState *bs, int argc, char **argv) | |
996 | { | |
997 | struct timeval t1, t2; | |
998 | int Cflag = 0, qflag = 0; | |
999 | int c, cnt; | |
1000 | char **buf; | |
1001 | int64_t offset, first_offset = 0; | |
1002 | /* Some compilers get confused and warn if this is not initialized. */ | |
1003 | int total = 0; | |
1004 | int nr_iov; | |
1005 | int nr_reqs; | |
1006 | int pattern = 0xcd; | |
1007 | QEMUIOVector *qiovs; | |
1008 | int i; | |
1009 | BlockRequest *reqs; | |
1010 | ||
1011 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
1012 | switch (c) { | |
1013 | case 'C': | |
1014 | Cflag = 1; | |
1015 | break; | |
1016 | case 'q': | |
1017 | qflag = 1; | |
1018 | break; | |
1019 | case 'P': | |
1020 | pattern = parse_pattern(optarg); | |
1021 | if (pattern < 0) { | |
1022 | return 0; | |
1023 | } | |
1024 | break; | |
1025 | default: | |
1026 | return command_usage(&writev_cmd); | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | if (optind > argc - 2) { | |
1031 | return command_usage(&writev_cmd); | |
1032 | } | |
1033 | ||
1034 | nr_reqs = 1; | |
1035 | for (i = optind; i < argc; i++) { | |
1036 | if (!strcmp(argv[i], ";")) { | |
1037 | nr_reqs++; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | reqs = g_malloc0(nr_reqs * sizeof(*reqs)); | |
1042 | buf = g_malloc0(nr_reqs * sizeof(*buf)); | |
1043 | qiovs = g_malloc(nr_reqs * sizeof(*qiovs)); | |
1044 | ||
1045 | for (i = 0; i < nr_reqs && optind < argc; i++) { | |
1046 | int j; | |
1047 | ||
1048 | /* Read the offset of the request */ | |
1049 | offset = cvtnum(argv[optind]); | |
1050 | if (offset < 0) { | |
1051 | printf("non-numeric offset argument -- %s\n", argv[optind]); | |
1052 | goto out; | |
1053 | } | |
1054 | optind++; | |
1055 | ||
1056 | if (offset & 0x1ff) { | |
1057 | printf("offset %lld is not sector aligned\n", | |
1058 | (long long)offset); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | if (i == 0) { | |
1063 | first_offset = offset; | |
1064 | } | |
1065 | ||
1066 | /* Read lengths for qiov entries */ | |
1067 | for (j = optind; j < argc; j++) { | |
1068 | if (!strcmp(argv[j], ";")) { | |
1069 | break; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | nr_iov = j - optind; | |
1074 | ||
1075 | /* Build request */ | |
1076 | buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern); | |
1077 | if (buf[i] == NULL) { | |
1078 | goto out; | |
1079 | } | |
1080 | ||
1081 | reqs[i].qiov = &qiovs[i]; | |
1082 | reqs[i].sector = offset >> 9; | |
1083 | reqs[i].nb_sectors = reqs[i].qiov->size >> 9; | |
1084 | ||
1085 | optind = j + 1; | |
1086 | ||
1087 | pattern++; | |
1088 | } | |
1089 | ||
1090 | /* If there were empty requests at the end, ignore them */ | |
1091 | nr_reqs = i; | |
1092 | ||
1093 | gettimeofday(&t1, NULL); | |
1094 | cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total); | |
1095 | gettimeofday(&t2, NULL); | |
1096 | ||
1097 | if (cnt < 0) { | |
1098 | printf("aio_multiwrite failed: %s\n", strerror(-cnt)); | |
1099 | goto out; | |
1100 | } | |
1101 | ||
1102 | if (qflag) { | |
1103 | goto out; | |
1104 | } | |
1105 | ||
1106 | /* Finally, report back -- -C gives a parsable format */ | |
1107 | t2 = tsub(t2, t1); | |
1108 | print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); | |
1109 | out: | |
1110 | for (i = 0; i < nr_reqs; i++) { | |
1111 | qemu_io_free(buf[i]); | |
1112 | if (reqs[i].qiov != NULL) { | |
1113 | qemu_iovec_destroy(&qiovs[i]); | |
1114 | } | |
1115 | } | |
1116 | g_free(buf); | |
1117 | g_free(reqs); | |
1118 | g_free(qiovs); | |
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | struct aio_ctx { | |
1123 | QEMUIOVector qiov; | |
1124 | int64_t offset; | |
1125 | char *buf; | |
1126 | int qflag; | |
1127 | int vflag; | |
1128 | int Cflag; | |
1129 | int Pflag; | |
1130 | int pattern; | |
1131 | struct timeval t1; | |
1132 | }; | |
1133 | ||
1134 | static void aio_write_done(void *opaque, int ret) | |
1135 | { | |
1136 | struct aio_ctx *ctx = opaque; | |
1137 | struct timeval t2; | |
1138 | ||
1139 | gettimeofday(&t2, NULL); | |
1140 | ||
1141 | ||
1142 | if (ret < 0) { | |
1143 | printf("aio_write failed: %s\n", strerror(-ret)); | |
1144 | goto out; | |
1145 | } | |
1146 | ||
1147 | if (ctx->qflag) { | |
1148 | goto out; | |
1149 | } | |
1150 | ||
1151 | /* Finally, report back -- -C gives a parsable format */ | |
1152 | t2 = tsub(t2, ctx->t1); | |
1153 | print_report("wrote", &t2, ctx->offset, ctx->qiov.size, | |
1154 | ctx->qiov.size, 1, ctx->Cflag); | |
1155 | out: | |
1156 | qemu_io_free(ctx->buf); | |
1157 | qemu_iovec_destroy(&ctx->qiov); | |
1158 | g_free(ctx); | |
1159 | } | |
1160 | ||
1161 | static void aio_read_done(void *opaque, int ret) | |
1162 | { | |
1163 | struct aio_ctx *ctx = opaque; | |
1164 | struct timeval t2; | |
1165 | ||
1166 | gettimeofday(&t2, NULL); | |
1167 | ||
1168 | if (ret < 0) { | |
1169 | printf("readv failed: %s\n", strerror(-ret)); | |
1170 | goto out; | |
1171 | } | |
1172 | ||
1173 | if (ctx->Pflag) { | |
1174 | void *cmp_buf = g_malloc(ctx->qiov.size); | |
1175 | ||
1176 | memset(cmp_buf, ctx->pattern, ctx->qiov.size); | |
1177 | if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { | |
1178 | printf("Pattern verification failed at offset %" | |
1179 | PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); | |
1180 | } | |
1181 | g_free(cmp_buf); | |
1182 | } | |
1183 | ||
1184 | if (ctx->qflag) { | |
1185 | goto out; | |
1186 | } | |
1187 | ||
1188 | if (ctx->vflag) { | |
1189 | dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); | |
1190 | } | |
1191 | ||
1192 | /* Finally, report back -- -C gives a parsable format */ | |
1193 | t2 = tsub(t2, ctx->t1); | |
1194 | print_report("read", &t2, ctx->offset, ctx->qiov.size, | |
1195 | ctx->qiov.size, 1, ctx->Cflag); | |
1196 | out: | |
1197 | qemu_io_free(ctx->buf); | |
1198 | qemu_iovec_destroy(&ctx->qiov); | |
1199 | g_free(ctx); | |
1200 | } | |
1201 | ||
1202 | static void aio_read_help(void) | |
1203 | { | |
1204 | printf( | |
1205 | "\n" | |
1206 | " asynchronously reads a range of bytes from the given offset\n" | |
1207 | "\n" | |
1208 | " Example:\n" | |
1209 | " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
1210 | "\n" | |
1211 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
1212 | " standard output stream (with -v option) for subsequent inspection.\n" | |
1213 | " The read is performed asynchronously and the aio_flush command must be\n" | |
1214 | " used to ensure all outstanding aio requests have been completed.\n" | |
1215 | " -C, -- report statistics in a machine parsable format\n" | |
1216 | " -P, -- use a pattern to verify read data\n" | |
1217 | " -v, -- dump buffer to standard output\n" | |
1218 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1219 | "\n"); | |
1220 | } | |
1221 | ||
1222 | static int aio_read_f(BlockDriverState *bs, int argc, char **argv); | |
1223 | ||
1224 | static const cmdinfo_t aio_read_cmd = { | |
1225 | .name = "aio_read", | |
1226 | .cfunc = aio_read_f, | |
1227 | .argmin = 2, | |
1228 | .argmax = -1, | |
1229 | .args = "[-Cqv] [-P pattern ] off len [len..]", | |
1230 | .oneline = "asynchronously reads a number of bytes", | |
1231 | .help = aio_read_help, | |
1232 | }; | |
1233 | ||
1234 | static int aio_read_f(BlockDriverState *bs, int argc, char **argv) | |
1235 | { | |
1236 | int nr_iov, c; | |
1237 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
1238 | ||
1239 | while ((c = getopt(argc, argv, "CP:qv")) != EOF) { | |
1240 | switch (c) { | |
1241 | case 'C': | |
1242 | ctx->Cflag = 1; | |
1243 | break; | |
1244 | case 'P': | |
1245 | ctx->Pflag = 1; | |
1246 | ctx->pattern = parse_pattern(optarg); | |
1247 | if (ctx->pattern < 0) { | |
1248 | g_free(ctx); | |
1249 | return 0; | |
1250 | } | |
1251 | break; | |
1252 | case 'q': | |
1253 | ctx->qflag = 1; | |
1254 | break; | |
1255 | case 'v': | |
1256 | ctx->vflag = 1; | |
1257 | break; | |
1258 | default: | |
1259 | g_free(ctx); | |
1260 | return command_usage(&aio_read_cmd); | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | if (optind > argc - 2) { | |
1265 | g_free(ctx); | |
1266 | return command_usage(&aio_read_cmd); | |
1267 | } | |
1268 | ||
1269 | ctx->offset = cvtnum(argv[optind]); | |
1270 | if (ctx->offset < 0) { | |
1271 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1272 | g_free(ctx); | |
1273 | return 0; | |
1274 | } | |
1275 | optind++; | |
1276 | ||
1277 | if (ctx->offset & 0x1ff) { | |
1278 | printf("offset %" PRId64 " is not sector aligned\n", | |
1279 | ctx->offset); | |
1280 | g_free(ctx); | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | nr_iov = argc - optind; | |
1285 | ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab); | |
1286 | if (ctx->buf == NULL) { | |
1287 | g_free(ctx); | |
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | gettimeofday(&ctx->t1, NULL); | |
1292 | bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov, | |
1293 | ctx->qiov.size >> 9, aio_read_done, ctx); | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static void aio_write_help(void) | |
1298 | { | |
1299 | printf( | |
1300 | "\n" | |
1301 | " asynchronously writes a range of bytes from the given offset source\n" | |
1302 | " from multiple buffers\n" | |
1303 | "\n" | |
1304 | " Example:\n" | |
1305 | " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
1306 | "\n" | |
1307 | " Writes into a segment of the currently open file, using a buffer\n" | |
1308 | " filled with a set pattern (0xcdcdcdcd).\n" | |
1309 | " The write is performed asynchronously and the aio_flush command must be\n" | |
1310 | " used to ensure all outstanding aio requests have been completed.\n" | |
1311 | " -P, -- use different pattern to fill file\n" | |
1312 | " -C, -- report statistics in a machine parsable format\n" | |
1313 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1314 | "\n"); | |
1315 | } | |
1316 | ||
1317 | static int aio_write_f(BlockDriverState *bs, int argc, char **argv); | |
1318 | ||
1319 | static const cmdinfo_t aio_write_cmd = { | |
1320 | .name = "aio_write", | |
1321 | .cfunc = aio_write_f, | |
1322 | .argmin = 2, | |
1323 | .argmax = -1, | |
1324 | .args = "[-Cq] [-P pattern ] off len [len..]", | |
1325 | .oneline = "asynchronously writes a number of bytes", | |
1326 | .help = aio_write_help, | |
1327 | }; | |
1328 | ||
1329 | static int aio_write_f(BlockDriverState *bs, int argc, char **argv) | |
1330 | { | |
1331 | int nr_iov, c; | |
1332 | int pattern = 0xcd; | |
1333 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
1334 | ||
1335 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
1336 | switch (c) { | |
1337 | case 'C': | |
1338 | ctx->Cflag = 1; | |
1339 | break; | |
1340 | case 'q': | |
1341 | ctx->qflag = 1; | |
1342 | break; | |
1343 | case 'P': | |
1344 | pattern = parse_pattern(optarg); | |
1345 | if (pattern < 0) { | |
1346 | g_free(ctx); | |
1347 | return 0; | |
1348 | } | |
1349 | break; | |
1350 | default: | |
1351 | g_free(ctx); | |
1352 | return command_usage(&aio_write_cmd); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | if (optind > argc - 2) { | |
1357 | g_free(ctx); | |
1358 | return command_usage(&aio_write_cmd); | |
1359 | } | |
1360 | ||
1361 | ctx->offset = cvtnum(argv[optind]); | |
1362 | if (ctx->offset < 0) { | |
1363 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1364 | g_free(ctx); | |
1365 | return 0; | |
1366 | } | |
1367 | optind++; | |
1368 | ||
1369 | if (ctx->offset & 0x1ff) { | |
1370 | printf("offset %" PRId64 " is not sector aligned\n", | |
1371 | ctx->offset); | |
1372 | g_free(ctx); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | nr_iov = argc - optind; | |
1377 | ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern); | |
1378 | if (ctx->buf == NULL) { | |
1379 | g_free(ctx); | |
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | gettimeofday(&ctx->t1, NULL); | |
1384 | bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov, | |
1385 | ctx->qiov.size >> 9, aio_write_done, ctx); | |
1386 | return 0; | |
1387 | } | |
1388 | ||
1389 | static int aio_flush_f(BlockDriverState *bs, int argc, char **argv) | |
1390 | { | |
1391 | bdrv_drain_all(); | |
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | static const cmdinfo_t aio_flush_cmd = { | |
1396 | .name = "aio_flush", | |
1397 | .cfunc = aio_flush_f, | |
1398 | .oneline = "completes all outstanding aio requests" | |
1399 | }; | |
1400 | ||
1401 | static int flush_f(BlockDriverState *bs, int argc, char **argv) | |
1402 | { | |
1403 | bdrv_flush(bs); | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | static const cmdinfo_t flush_cmd = { | |
1408 | .name = "flush", | |
1409 | .altname = "f", | |
1410 | .cfunc = flush_f, | |
1411 | .oneline = "flush all in-core file state to disk", | |
1412 | }; | |
1413 | ||
1414 | static int truncate_f(BlockDriverState *bs, int argc, char **argv) | |
1415 | { | |
1416 | int64_t offset; | |
1417 | int ret; | |
1418 | ||
1419 | offset = cvtnum(argv[1]); | |
1420 | if (offset < 0) { | |
1421 | printf("non-numeric truncate argument -- %s\n", argv[1]); | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | ret = bdrv_truncate(bs, offset); | |
1426 | if (ret < 0) { | |
1427 | printf("truncate: %s\n", strerror(-ret)); | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | static const cmdinfo_t truncate_cmd = { | |
1435 | .name = "truncate", | |
1436 | .altname = "t", | |
1437 | .cfunc = truncate_f, | |
1438 | .argmin = 1, | |
1439 | .argmax = 1, | |
1440 | .args = "off", | |
1441 | .oneline = "truncates the current file at the given offset", | |
1442 | }; | |
1443 | ||
1444 | static int length_f(BlockDriverState *bs, int argc, char **argv) | |
1445 | { | |
1446 | int64_t size; | |
1447 | char s1[64]; | |
1448 | ||
1449 | size = bdrv_getlength(bs); | |
1450 | if (size < 0) { | |
1451 | printf("getlength: %s\n", strerror(-size)); | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | cvtstr(size, s1, sizeof(s1)); | |
1456 | printf("%s\n", s1); | |
1457 | return 0; | |
1458 | } | |
1459 | ||
1460 | ||
1461 | static const cmdinfo_t length_cmd = { | |
1462 | .name = "length", | |
1463 | .altname = "l", | |
1464 | .cfunc = length_f, | |
1465 | .oneline = "gets the length of the current file", | |
1466 | }; | |
1467 | ||
1468 | ||
1469 | static int info_f(BlockDriverState *bs, int argc, char **argv) | |
1470 | { | |
1471 | BlockDriverInfo bdi; | |
1472 | char s1[64], s2[64]; | |
1473 | int ret; | |
1474 | ||
1475 | if (bs->drv && bs->drv->format_name) { | |
1476 | printf("format name: %s\n", bs->drv->format_name); | |
1477 | } | |
1478 | if (bs->drv && bs->drv->protocol_name) { | |
1479 | printf("format name: %s\n", bs->drv->protocol_name); | |
1480 | } | |
1481 | ||
1482 | ret = bdrv_get_info(bs, &bdi); | |
1483 | if (ret) { | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | cvtstr(bdi.cluster_size, s1, sizeof(s1)); | |
1488 | cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); | |
1489 | ||
1490 | printf("cluster size: %s\n", s1); | |
1491 | printf("vm state offset: %s\n", s2); | |
1492 | ||
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | ||
1497 | ||
1498 | static const cmdinfo_t info_cmd = { | |
1499 | .name = "info", | |
1500 | .altname = "i", | |
1501 | .cfunc = info_f, | |
1502 | .oneline = "prints information about the current file", | |
1503 | }; | |
1504 | ||
1505 | static void discard_help(void) | |
1506 | { | |
1507 | printf( | |
1508 | "\n" | |
1509 | " discards a range of bytes from the given offset\n" | |
1510 | "\n" | |
1511 | " Example:\n" | |
1512 | " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" | |
1513 | "\n" | |
1514 | " Discards a segment of the currently open file.\n" | |
1515 | " -C, -- report statistics in a machine parsable format\n" | |
1516 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1517 | "\n"); | |
1518 | } | |
1519 | ||
1520 | static int discard_f(BlockDriverState *bs, int argc, char **argv); | |
1521 | ||
1522 | static const cmdinfo_t discard_cmd = { | |
1523 | .name = "discard", | |
1524 | .altname = "d", | |
1525 | .cfunc = discard_f, | |
1526 | .argmin = 2, | |
1527 | .argmax = -1, | |
1528 | .args = "[-Cq] off len", | |
1529 | .oneline = "discards a number of bytes at a specified offset", | |
1530 | .help = discard_help, | |
1531 | }; | |
1532 | ||
1533 | static int discard_f(BlockDriverState *bs, int argc, char **argv) | |
1534 | { | |
1535 | struct timeval t1, t2; | |
1536 | int Cflag = 0, qflag = 0; | |
1537 | int c, ret; | |
1538 | int64_t offset; | |
1539 | int count; | |
1540 | ||
1541 | while ((c = getopt(argc, argv, "Cq")) != EOF) { | |
1542 | switch (c) { | |
1543 | case 'C': | |
1544 | Cflag = 1; | |
1545 | break; | |
1546 | case 'q': | |
1547 | qflag = 1; | |
1548 | break; | |
1549 | default: | |
1550 | return command_usage(&discard_cmd); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | if (optind != argc - 2) { | |
1555 | return command_usage(&discard_cmd); | |
1556 | } | |
1557 | ||
1558 | offset = cvtnum(argv[optind]); | |
1559 | if (offset < 0) { | |
1560 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | optind++; | |
1565 | count = cvtnum(argv[optind]); | |
1566 | if (count < 0) { | |
1567 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | gettimeofday(&t1, NULL); | |
1572 | ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, | |
1573 | count >> BDRV_SECTOR_BITS); | |
1574 | gettimeofday(&t2, NULL); | |
1575 | ||
1576 | if (ret < 0) { | |
1577 | printf("discard failed: %s\n", strerror(-ret)); | |
1578 | goto out; | |
1579 | } | |
1580 | ||
1581 | /* Finally, report back -- -C gives a parsable format */ | |
1582 | if (!qflag) { | |
1583 | t2 = tsub(t2, t1); | |
1584 | print_report("discard", &t2, offset, count, count, 1, Cflag); | |
1585 | } | |
1586 | ||
1587 | out: | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | static int alloc_f(BlockDriverState *bs, int argc, char **argv) | |
1592 | { | |
1593 | int64_t offset, sector_num; | |
1594 | int nb_sectors, remaining; | |
1595 | char s1[64]; | |
1596 | int num, sum_alloc; | |
1597 | int ret; | |
1598 | ||
1599 | offset = cvtnum(argv[1]); | |
1600 | if (offset < 0) { | |
1601 | printf("non-numeric offset argument -- %s\n", argv[1]); | |
1602 | return 0; | |
1603 | } else if (offset & 0x1ff) { | |
1604 | printf("offset %" PRId64 " is not sector aligned\n", | |
1605 | offset); | |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | if (argc == 3) { | |
1610 | nb_sectors = cvtnum(argv[2]); | |
1611 | if (nb_sectors < 0) { | |
1612 | printf("non-numeric length argument -- %s\n", argv[2]); | |
1613 | return 0; | |
1614 | } | |
1615 | } else { | |
1616 | nb_sectors = 1; | |
1617 | } | |
1618 | ||
1619 | remaining = nb_sectors; | |
1620 | sum_alloc = 0; | |
1621 | sector_num = offset >> 9; | |
1622 | while (remaining) { | |
1623 | ret = bdrv_is_allocated(bs, sector_num, remaining, &num); | |
1624 | sector_num += num; | |
1625 | remaining -= num; | |
1626 | if (ret) { | |
1627 | sum_alloc += num; | |
1628 | } | |
1629 | if (num == 0) { | |
1630 | nb_sectors -= remaining; | |
1631 | remaining = 0; | |
1632 | } | |
1633 | } | |
1634 | ||
1635 | cvtstr(offset, s1, sizeof(s1)); | |
1636 | ||
1637 | printf("%d/%d sectors allocated at offset %s\n", | |
1638 | sum_alloc, nb_sectors, s1); | |
1639 | return 0; | |
1640 | } | |
1641 | ||
1642 | static const cmdinfo_t alloc_cmd = { | |
1643 | .name = "alloc", | |
1644 | .altname = "a", | |
1645 | .argmin = 1, | |
1646 | .argmax = 2, | |
1647 | .cfunc = alloc_f, | |
1648 | .args = "off [sectors]", | |
1649 | .oneline = "checks if a sector is present in the file", | |
1650 | }; | |
1651 | ||
1652 | ||
1653 | static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, | |
1654 | int64_t nb_sectors, int64_t *pnum) | |
1655 | { | |
1656 | int num, num_checked; | |
1657 | int ret, firstret; | |
1658 | ||
1659 | num_checked = MIN(nb_sectors, INT_MAX); | |
1660 | ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); | |
1661 | if (ret < 0) { | |
1662 | return ret; | |
1663 | } | |
1664 | ||
1665 | firstret = ret; | |
1666 | *pnum = num; | |
1667 | ||
1668 | while (nb_sectors > 0 && ret == firstret) { | |
1669 | sector_num += num; | |
1670 | nb_sectors -= num; | |
1671 | ||
1672 | num_checked = MIN(nb_sectors, INT_MAX); | |
1673 | ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); | |
1674 | if (ret == firstret) { | |
1675 | *pnum += num; | |
1676 | } else { | |
1677 | break; | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | return firstret; | |
1682 | } | |
1683 | ||
1684 | static int map_f(BlockDriverState *bs, int argc, char **argv) | |
1685 | { | |
1686 | int64_t offset; | |
1687 | int64_t nb_sectors; | |
1688 | char s1[64]; | |
1689 | int64_t num; | |
1690 | int ret; | |
1691 | const char *retstr; | |
1692 | ||
1693 | offset = 0; | |
1694 | nb_sectors = bs->total_sectors; | |
1695 | ||
1696 | do { | |
1697 | ret = map_is_allocated(bs, offset, nb_sectors, &num); | |
1698 | if (ret < 0) { | |
1699 | error_report("Failed to get allocation status: %s", strerror(-ret)); | |
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | retstr = ret ? " allocated" : "not allocated"; | |
1704 | cvtstr(offset << 9ULL, s1, sizeof(s1)); | |
1705 | printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " | |
1706 | "at offset %s (%d)\n", | |
1707 | offset << 9ULL, num, nb_sectors, retstr, s1, ret); | |
1708 | ||
1709 | offset += num; | |
1710 | nb_sectors -= num; | |
1711 | } while (offset < bs->total_sectors); | |
1712 | ||
1713 | return 0; | |
1714 | } | |
1715 | ||
1716 | static const cmdinfo_t map_cmd = { | |
1717 | .name = "map", | |
1718 | .argmin = 0, | |
1719 | .argmax = 0, | |
1720 | .cfunc = map_f, | |
1721 | .args = "", | |
1722 | .oneline = "prints the allocated areas of a file", | |
1723 | }; | |
1724 | ||
1725 | static int break_f(BlockDriverState *bs, int argc, char **argv) | |
1726 | { | |
1727 | int ret; | |
1728 | ||
1729 | ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); | |
1730 | if (ret < 0) { | |
1731 | printf("Could not set breakpoint: %s\n", strerror(-ret)); | |
1732 | } | |
1733 | ||
1734 | return 0; | |
1735 | } | |
1736 | ||
1737 | static const cmdinfo_t break_cmd = { | |
1738 | .name = "break", | |
1739 | .argmin = 2, | |
1740 | .argmax = 2, | |
1741 | .cfunc = break_f, | |
1742 | .args = "event tag", | |
1743 | .oneline = "sets a breakpoint on event and tags the stopped " | |
1744 | "request as tag", | |
1745 | }; | |
1746 | ||
1747 | static int resume_f(BlockDriverState *bs, int argc, char **argv) | |
1748 | { | |
1749 | int ret; | |
1750 | ||
1751 | ret = bdrv_debug_resume(bs, argv[1]); | |
1752 | if (ret < 0) { | |
1753 | printf("Could not resume request: %s\n", strerror(-ret)); | |
1754 | } | |
1755 | ||
1756 | return 0; | |
1757 | } | |
1758 | ||
1759 | static const cmdinfo_t resume_cmd = { | |
1760 | .name = "resume", | |
1761 | .argmin = 1, | |
1762 | .argmax = 1, | |
1763 | .cfunc = resume_f, | |
1764 | .args = "tag", | |
1765 | .oneline = "resumes the request tagged as tag", | |
1766 | }; | |
1767 | ||
1768 | static int wait_break_f(BlockDriverState *bs, int argc, char **argv) | |
1769 | { | |
1770 | while (!bdrv_debug_is_suspended(bs, argv[1])) { | |
1771 | qemu_aio_wait(); | |
1772 | } | |
1773 | ||
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | static const cmdinfo_t wait_break_cmd = { | |
1778 | .name = "wait_break", | |
1779 | .argmin = 1, | |
1780 | .argmax = 1, | |
1781 | .cfunc = wait_break_f, | |
1782 | .args = "tag", | |
1783 | .oneline = "waits for the suspension of a request", | |
1784 | }; | |
1785 | ||
1786 | static int abort_f(BlockDriverState *bs, int argc, char **argv) | |
1787 | { | |
1788 | abort(); | |
1789 | } | |
1790 | ||
1791 | static const cmdinfo_t abort_cmd = { | |
1792 | .name = "abort", | |
1793 | .cfunc = abort_f, | |
1794 | .flags = CMD_NOFILE_OK, | |
1795 | .oneline = "simulate a program crash using abort(3)", | |
1796 | }; | |
1797 | ||
f18a834a KW |
1798 | static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
1799 | { | |
1800 | if (cmd) { | |
1801 | printf("%s ", cmd); | |
1802 | } else { | |
1803 | printf("%s ", ct->name); | |
1804 | if (ct->altname) { | |
1805 | printf("(or %s) ", ct->altname); | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | if (ct->args) { | |
1810 | printf("%s ", ct->args); | |
1811 | } | |
1812 | printf("-- %s\n", ct->oneline); | |
1813 | } | |
1814 | ||
1815 | static void help_onecmd(const char *cmd, const cmdinfo_t *ct) | |
1816 | { | |
1817 | help_oneline(cmd, ct); | |
1818 | if (ct->help) { | |
1819 | ct->help(); | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | static void help_all(void) | |
1824 | { | |
1825 | const cmdinfo_t *ct; | |
1826 | ||
1827 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { | |
1828 | help_oneline(ct->name, ct); | |
1829 | } | |
1830 | printf("\nUse 'help commandname' for extended help.\n"); | |
1831 | } | |
1832 | ||
1833 | static int help_f(BlockDriverState *bs, int argc, char **argv) | |
1834 | { | |
1835 | const cmdinfo_t *ct; | |
1836 | ||
1837 | if (argc == 1) { | |
1838 | help_all(); | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | ct = find_command(argv[1]); | |
1843 | if (ct == NULL) { | |
1844 | printf("command %s not found\n", argv[1]); | |
1845 | return 0; | |
1846 | } | |
1847 | ||
1848 | help_onecmd(argv[1], ct); | |
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | static const cmdinfo_t help_cmd = { | |
1853 | .name = "help", | |
1854 | .altname = "?", | |
1855 | .cfunc = help_f, | |
1856 | .argmin = 0, | |
1857 | .argmax = 1, | |
1858 | .flags = CMD_FLAG_GLOBAL, | |
1859 | .args = "[command]", | |
1860 | .oneline = "help for one or all commands", | |
1861 | }; | |
1862 | ||
797ac58c KW |
1863 | static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct) |
1864 | { | |
1865 | if (ct->flags & CMD_FLAG_GLOBAL) { | |
1866 | return 1; | |
1867 | } | |
1868 | if (!(ct->flags & CMD_NOFILE_OK) && !bs) { | |
1869 | fprintf(stderr, "no file open, try 'help open'\n"); | |
1870 | return 0; | |
1871 | } | |
1872 | return 1; | |
1873 | } | |
1874 | ||
dd583296 KW |
1875 | bool qemuio_command(const char *cmd) |
1876 | { | |
1877 | char *input; | |
1878 | const cmdinfo_t *ct; | |
1879 | char **v; | |
1880 | int c; | |
1881 | bool done = false; | |
1882 | ||
1883 | input = g_strdup(cmd); | |
1884 | v = breakline(input, &c); | |
1885 | if (c) { | |
1886 | ct = find_command(v[0]); | |
1887 | if (ct) { | |
1888 | done = command(ct, c, v); | |
1889 | } else { | |
1890 | fprintf(stderr, "command \"%s\" not found\n", v[0]); | |
1891 | } | |
1892 | } | |
1893 | g_free(input); | |
1894 | g_free(v); | |
1895 | ||
1896 | return done; | |
1897 | } | |
1898 | ||
797ac58c KW |
1899 | static void __attribute((constructor)) init_qemuio_commands(void) |
1900 | { | |
1901 | /* initialize commands */ | |
f18a834a | 1902 | add_command(&help_cmd); |
797ac58c KW |
1903 | add_command(&read_cmd); |
1904 | add_command(&readv_cmd); | |
1905 | add_command(&write_cmd); | |
1906 | add_command(&writev_cmd); | |
1907 | add_command(&multiwrite_cmd); | |
1908 | add_command(&aio_read_cmd); | |
1909 | add_command(&aio_write_cmd); | |
1910 | add_command(&aio_flush_cmd); | |
1911 | add_command(&flush_cmd); | |
1912 | add_command(&truncate_cmd); | |
1913 | add_command(&length_cmd); | |
1914 | add_command(&info_cmd); | |
1915 | add_command(&discard_cmd); | |
1916 | add_command(&alloc_cmd); | |
1917 | add_command(&map_cmd); | |
1918 | add_command(&break_cmd); | |
1919 | add_command(&resume_cmd); | |
1920 | add_command(&wait_break_cmd); | |
1921 | add_command(&abort_cmd); | |
1922 | ||
1923 | add_check_command(init_check_command); | |
1924 | } |