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Commit | Line | Data |
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e3aff4f6 AL |
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 | * Memory allocation helpers. | |
30 | * | |
31 | * Make sure memory is aligned by default, or purposefully misaligned if | |
32 | * that is specified on the command line. | |
33 | */ | |
34 | ||
35 | #define MISALIGN_OFFSET 16 | |
36 | static void *qemu_io_alloc(size_t len, int pattern) | |
37 | { | |
38 | void *buf; | |
39 | ||
40 | if (misalign) | |
41 | len += MISALIGN_OFFSET; | |
42 | buf = qemu_memalign(512, len); | |
43 | memset(buf, pattern, len); | |
44 | if (misalign) | |
45 | buf += MISALIGN_OFFSET; | |
46 | return buf; | |
47 | } | |
48 | ||
49 | static void qemu_io_free(void *p) | |
50 | { | |
51 | if (misalign) | |
52 | p -= MISALIGN_OFFSET; | |
53 | qemu_vfree(p); | |
54 | } | |
55 | ||
56 | static void | |
57 | dump_buffer(char *buffer, int64_t offset, int len) | |
58 | { | |
59 | int i, j; | |
60 | char *p; | |
61 | ||
62 | for (i = 0, p = buffer; i < len; i += 16) { | |
63 | char *s = p; | |
64 | ||
65 | printf("%08llx: ", (unsigned long long)offset + i); | |
66 | for (j = 0; j < 16 && i + j < len; j++, p++) | |
67 | printf("%02x ", *p); | |
68 | printf(" "); | |
69 | for (j = 0; j < 16 && i + j < len; j++, s++) { | |
70 | if (isalnum((int)*s)) | |
71 | printf("%c", *s); | |
72 | else | |
73 | printf("."); | |
74 | } | |
75 | printf("\n"); | |
76 | } | |
77 | } | |
78 | ||
79 | static void | |
80 | print_report(const char *op, struct timeval *t, int64_t offset, | |
81 | int count, int total, int cnt, int Cflag) | |
82 | { | |
83 | char s1[64], s2[64], ts[64]; | |
84 | ||
85 | timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); | |
86 | if (!Cflag) { | |
87 | cvtstr((double)total, s1, sizeof(s1)); | |
88 | cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); | |
89 | printf("%s %d/%d bytes at offset %lld\n", | |
90 | op, total, count, (long long)offset); | |
91 | printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", | |
92 | s1, cnt, ts, s2, tdiv((double)cnt, *t)); | |
93 | } else {/* bytes,ops,time,bytes/sec,ops/sec */ | |
94 | printf("%d,%d,%s,%.3f,%.3f\n", | |
95 | total, cnt, ts, | |
96 | tdiv((double)total, *t), | |
97 | tdiv((double)cnt, *t)); | |
98 | } | |
99 | } | |
100 | ||
101 | static int do_read(char *buf, int64_t offset, int count, int *total) | |
102 | { | |
103 | int ret; | |
104 | ||
105 | ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
106 | if (ret < 0) | |
107 | return ret; | |
108 | *total = count; | |
109 | return 1; | |
110 | } | |
111 | ||
112 | static int do_write(char *buf, int64_t offset, int count, int *total) | |
113 | { | |
114 | int ret; | |
115 | ||
116 | ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); | |
117 | if (ret < 0) | |
118 | return ret; | |
119 | *total = count; | |
120 | return 1; | |
121 | } | |
122 | ||
123 | static int do_pread(char *buf, int64_t offset, int count, int *total) | |
124 | { | |
125 | *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); | |
126 | if (*total < 0) | |
127 | return *total; | |
128 | return 1; | |
129 | } | |
130 | ||
131 | static int do_pwrite(char *buf, int64_t offset, int count, int *total) | |
132 | { | |
133 | *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); | |
134 | if (*total < 0) | |
135 | return *total; | |
136 | return 1; | |
137 | } | |
138 | ||
139 | #define NOT_DONE 0x7fffffff | |
140 | static void aio_rw_done(void *opaque, int ret) | |
141 | { | |
142 | *(int *)opaque = ret; | |
143 | } | |
144 | ||
145 | static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) | |
146 | { | |
147 | BlockDriverAIOCB *acb; | |
148 | int async_ret = NOT_DONE; | |
149 | ||
150 | acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, | |
151 | aio_rw_done, &async_ret); | |
152 | if (!acb) | |
153 | return -EIO; | |
154 | ||
155 | while (async_ret == NOT_DONE) | |
156 | qemu_aio_wait(); | |
157 | ||
158 | *total = qiov->size; | |
159 | return async_ret < 0 ? async_ret : 1; | |
160 | } | |
161 | ||
162 | static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) | |
163 | { | |
164 | BlockDriverAIOCB *acb; | |
165 | int async_ret = NOT_DONE; | |
166 | ||
167 | acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, | |
168 | aio_rw_done, &async_ret); | |
169 | if (!acb) | |
170 | return -EIO; | |
171 | ||
172 | while (async_ret == NOT_DONE) | |
173 | qemu_aio_wait(); | |
174 | ||
175 | *total = qiov->size >> 9; | |
176 | return async_ret < 0 ? async_ret : 1; | |
177 | } | |
178 | ||
179 | ||
180 | static const cmdinfo_t read_cmd; | |
181 | ||
182 | static void | |
183 | read_help(void) | |
184 | { | |
185 | printf( | |
186 | "\n" | |
187 | " reads a range of bytes from the given offset\n" | |
188 | "\n" | |
189 | " Example:\n" | |
190 | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" | |
191 | "\n" | |
192 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
193 | " standard output stream (with -v option) for subsequent inspection.\n" | |
194 | " -p, -- use bdrv_pread to read the file\n" | |
195 | " -C, -- report statistics in a machine parsable format\n" | |
196 | " -v, -- dump buffer to standard output\n" | |
197 | " -q, -- quite mode, do not show I/O statistics\n" | |
198 | "\n"); | |
199 | } | |
200 | ||
201 | static int | |
202 | read_f(int argc, char **argv) | |
203 | { | |
204 | struct timeval t1, t2; | |
205 | int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; | |
206 | int c, cnt; | |
207 | char *buf; | |
208 | int64_t offset; | |
209 | int count, total; | |
210 | ||
211 | while ((c = getopt(argc, argv, "Cpqv")) != EOF) { | |
212 | switch (c) { | |
213 | case 'C': | |
214 | Cflag = 1; | |
215 | break; | |
216 | case 'p': | |
217 | pflag = 1; | |
218 | break; | |
219 | case 'q': | |
220 | qflag = 1; | |
221 | break; | |
222 | case 'v': | |
223 | vflag = 1; | |
224 | break; | |
225 | default: | |
226 | return command_usage(&read_cmd); | |
227 | } | |
228 | } | |
229 | ||
230 | if (optind != argc - 2) | |
231 | return command_usage(&read_cmd); | |
232 | ||
233 | offset = cvtnum(argv[optind]); | |
234 | if (offset < 0) { | |
235 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
236 | return 0; | |
237 | } | |
238 | ||
239 | optind++; | |
240 | count = cvtnum(argv[optind]); | |
241 | if (count < 0) { | |
242 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
243 | return 0; | |
244 | } | |
245 | ||
246 | if (!pflag) | |
247 | if (offset & 0x1ff) { | |
248 | printf("offset %lld is not sector aligned\n", | |
249 | (long long)offset); | |
250 | return 0; | |
251 | ||
252 | if (count & 0x1ff) { | |
253 | printf("count %d is not sector aligned\n", | |
254 | count); | |
255 | return 0; | |
256 | } | |
257 | } | |
258 | ||
259 | buf = qemu_io_alloc(count, 0xab); | |
260 | ||
261 | gettimeofday(&t1, NULL); | |
262 | if (pflag) | |
263 | cnt = do_pread(buf, offset, count, &total); | |
264 | else | |
265 | cnt = do_read(buf, offset, count, &total); | |
266 | gettimeofday(&t2, NULL); | |
267 | ||
268 | if (cnt < 0) { | |
269 | printf("read failed: %s\n", strerror(-cnt)); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | if (qflag) | |
274 | return 0; | |
275 | ||
276 | if (vflag) | |
277 | dump_buffer(buf, offset, count); | |
278 | ||
279 | /* Finally, report back -- -C gives a parsable format */ | |
280 | t2 = tsub(t2, t1); | |
281 | print_report("read", &t2, offset, count, total, cnt, Cflag); | |
282 | ||
283 | qemu_io_free(buf); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | static const cmdinfo_t read_cmd = { | |
289 | .name = "read", | |
290 | .altname = "r", | |
291 | .cfunc = read_f, | |
292 | .argmin = 2, | |
293 | .argmax = -1, | |
294 | .args = "[-aCpqv] off len", | |
295 | .oneline = "reads a number of bytes at a specified offset", | |
296 | .help = read_help, | |
297 | }; | |
298 | ||
299 | static const cmdinfo_t readv_cmd; | |
300 | ||
301 | static void | |
302 | readv_help(void) | |
303 | { | |
304 | printf( | |
305 | "\n" | |
306 | " reads a range of bytes from the given offset into multiple buffers\n" | |
307 | "\n" | |
308 | " Example:\n" | |
309 | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
310 | "\n" | |
311 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
312 | " standard output stream (with -v option) for subsequent inspection.\n" | |
313 | " Uses multiple iovec buffers if more than one byte range is specified.\n" | |
314 | " -C, -- report statistics in a machine parsable format\n" | |
315 | " -v, -- dump buffer to standard output\n" | |
316 | " -q, -- quite mode, do not show I/O statistics\n" | |
317 | "\n"); | |
318 | } | |
319 | ||
320 | static int | |
321 | readv_f(int argc, char **argv) | |
322 | { | |
323 | struct timeval t1, t2; | |
324 | int Cflag = 0, qflag = 0, vflag = 0; | |
325 | int c, cnt; | |
326 | char *buf, *p; | |
327 | int64_t offset; | |
328 | int count = 0, total; | |
329 | int nr_iov, i; | |
330 | QEMUIOVector qiov; | |
331 | ||
332 | while ((c = getopt(argc, argv, "Cqv")) != EOF) { | |
333 | switch (c) { | |
334 | case 'C': | |
335 | Cflag = 1; | |
336 | break; | |
337 | case 'q': | |
338 | qflag = 1; | |
339 | break; | |
340 | case 'v': | |
341 | vflag = 1; | |
342 | break; | |
343 | default: | |
344 | return command_usage(&readv_cmd); | |
345 | } | |
346 | } | |
347 | ||
348 | if (optind > argc - 2) | |
349 | return command_usage(&readv_cmd); | |
350 | ||
351 | ||
352 | offset = cvtnum(argv[optind]); | |
353 | if (offset < 0) { | |
354 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
355 | return 0; | |
356 | } | |
357 | optind++; | |
358 | ||
359 | if (offset & 0x1ff) { | |
360 | printf("offset %lld is not sector aligned\n", | |
361 | (long long)offset); | |
362 | return 0; | |
363 | } | |
364 | ||
365 | if (count & 0x1ff) { | |
366 | printf("count %d is not sector aligned\n", | |
367 | count); | |
368 | return 0; | |
369 | } | |
370 | ||
371 | for (i = optind; i < argc; i++) { | |
372 | size_t len; | |
373 | ||
374 | len = cvtnum(argv[i]); | |
375 | if (len < 0) { | |
376 | printf("non-numeric length argument -- %s\n", argv[i]); | |
377 | return 0; | |
378 | } | |
379 | count += len; | |
380 | } | |
381 | ||
382 | nr_iov = argc - optind; | |
383 | qemu_iovec_init(&qiov, nr_iov); | |
384 | buf = p = qemu_io_alloc(count, 0xab); | |
385 | for (i = 0; i < nr_iov; i++) { | |
386 | size_t len; | |
387 | ||
388 | len = cvtnum(argv[optind]); | |
389 | if (len < 0) { | |
390 | printf("non-numeric length argument -- %s\n", | |
391 | argv[optind]); | |
392 | return 0; | |
393 | } | |
394 | ||
395 | qemu_iovec_add(&qiov, p, len); | |
396 | p += len; | |
397 | optind++; | |
398 | } | |
399 | ||
400 | gettimeofday(&t1, NULL); | |
401 | cnt = do_aio_readv(&qiov, offset, &total); | |
402 | gettimeofday(&t2, NULL); | |
403 | ||
404 | if (cnt < 0) { | |
405 | printf("readv failed: %s\n", strerror(-cnt)); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | if (qflag) | |
410 | return 0; | |
411 | ||
412 | if (vflag) | |
413 | dump_buffer(buf, offset, qiov.size); | |
414 | ||
415 | /* Finally, report back -- -C gives a parsable format */ | |
416 | t2 = tsub(t2, t1); | |
417 | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); | |
418 | ||
419 | qemu_io_free(buf); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static const cmdinfo_t readv_cmd = { | |
425 | .name = "readv", | |
426 | .cfunc = readv_f, | |
427 | .argmin = 2, | |
428 | .argmax = -1, | |
429 | .args = "[-Cqv] off len [len..]", | |
430 | .oneline = "reads a number of bytes at a specified offset", | |
431 | .help = readv_help, | |
432 | }; | |
433 | ||
434 | static const cmdinfo_t write_cmd; | |
435 | ||
436 | static void | |
437 | write_help(void) | |
438 | { | |
439 | printf( | |
440 | "\n" | |
441 | " writes a range of bytes from the given offset\n" | |
442 | "\n" | |
443 | " Example:\n" | |
444 | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" | |
445 | "\n" | |
446 | " Writes into a segment of the currently open file, using a buffer\n" | |
447 | " filled with a set pattern (0xcdcdcdcd).\n" | |
448 | " -p, -- use bdrv_pwrite to write the file\n" | |
449 | " -P, -- use different pattern to fill file\n" | |
450 | " -C, -- report statistics in a machine parsable format\n" | |
451 | " -q, -- quite mode, do not show I/O statistics\n" | |
452 | "\n"); | |
453 | } | |
454 | ||
455 | static int | |
456 | write_f(int argc, char **argv) | |
457 | { | |
458 | struct timeval t1, t2; | |
459 | int Cflag = 0, pflag = 0, qflag = 0; | |
460 | int c, cnt; | |
461 | char *buf; | |
462 | int64_t offset; | |
463 | int count, total; | |
464 | int pattern = 0xcd; | |
465 | ||
466 | while ((c = getopt(argc, argv, "CpP:q")) != EOF) { | |
467 | switch (c) { | |
468 | case 'C': | |
469 | Cflag = 1; | |
470 | break; | |
471 | case 'p': | |
472 | pflag = 1; | |
473 | break; | |
474 | case 'P': | |
475 | pattern = atoi(optarg); | |
476 | break; | |
477 | case 'q': | |
478 | qflag = 1; | |
479 | break; | |
480 | default: | |
481 | return command_usage(&write_cmd); | |
482 | } | |
483 | } | |
484 | ||
485 | if (optind != argc - 2) | |
486 | return command_usage(&write_cmd); | |
487 | ||
488 | offset = cvtnum(argv[optind]); | |
489 | if (offset < 0) { | |
490 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
491 | return 0; | |
492 | } | |
493 | ||
494 | optind++; | |
495 | count = cvtnum(argv[optind]); | |
496 | if (count < 0) { | |
497 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
498 | return 0; | |
499 | } | |
500 | ||
501 | if (!pflag) { | |
502 | if (offset & 0x1ff) { | |
503 | printf("offset %lld is not sector aligned\n", | |
504 | (long long)offset); | |
505 | return 0; | |
506 | } | |
507 | ||
508 | if (count & 0x1ff) { | |
509 | printf("count %d is not sector aligned\n", | |
510 | count); | |
511 | return 0; | |
512 | } | |
513 | } | |
514 | ||
515 | buf = qemu_io_alloc(count, pattern); | |
516 | ||
517 | gettimeofday(&t1, NULL); | |
518 | if (pflag) | |
519 | cnt = do_pwrite(buf, offset, count, &total); | |
520 | else | |
521 | cnt = do_write(buf, offset, count, &total); | |
522 | gettimeofday(&t2, NULL); | |
523 | ||
524 | if (cnt < 0) { | |
525 | printf("write failed: %s\n", strerror(-cnt)); | |
526 | return 0; | |
527 | } | |
528 | ||
529 | if (qflag) | |
530 | return 0; | |
531 | ||
532 | /* Finally, report back -- -C gives a parsable format */ | |
533 | t2 = tsub(t2, t1); | |
534 | print_report("wrote", &t2, offset, count, total, cnt, Cflag); | |
535 | ||
536 | qemu_io_free(buf); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static const cmdinfo_t write_cmd = { | |
542 | .name = "write", | |
543 | .altname = "w", | |
544 | .cfunc = write_f, | |
545 | .argmin = 2, | |
546 | .argmax = -1, | |
547 | .args = "[-aCpq] [-P pattern ] off len", | |
548 | .oneline = "writes a number of bytes at a specified offset", | |
549 | .help = write_help, | |
550 | }; | |
551 | ||
552 | static const cmdinfo_t writev_cmd; | |
553 | ||
554 | static void | |
555 | writev_help(void) | |
556 | { | |
557 | printf( | |
558 | "\n" | |
559 | " writes a range of bytes from the given offset source from multiple buffers\n" | |
560 | "\n" | |
561 | " Example:\n" | |
562 | " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
563 | "\n" | |
564 | " Writes into a segment of the currently open file, using a buffer\n" | |
565 | " filled with a set pattern (0xcdcdcdcd).\n" | |
566 | " -P, -- use different pattern to fill file\n" | |
567 | " -C, -- report statistics in a machine parsable format\n" | |
568 | " -q, -- quite mode, do not show I/O statistics\n" | |
569 | "\n"); | |
570 | } | |
571 | ||
572 | static int | |
573 | writev_f(int argc, char **argv) | |
574 | { | |
575 | struct timeval t1, t2; | |
576 | int Cflag = 0, qflag = 0; | |
577 | int c, cnt; | |
578 | char *buf, *p; | |
579 | int64_t offset; | |
580 | int count = 0, total; | |
581 | int nr_iov, i; | |
582 | int pattern = 0xcd; | |
583 | QEMUIOVector qiov; | |
584 | ||
585 | while ((c = getopt(argc, argv, "CqP:")) != EOF) { | |
586 | switch (c) { | |
587 | case 'C': | |
588 | Cflag = 1; | |
589 | break; | |
590 | case 'q': | |
591 | qflag = 1; | |
592 | break; | |
593 | case 'P': | |
594 | pattern = atoi(optarg); | |
595 | break; | |
596 | default: | |
597 | return command_usage(&writev_cmd); | |
598 | } | |
599 | } | |
600 | ||
601 | if (optind > argc - 2) | |
602 | return command_usage(&writev_cmd); | |
603 | ||
604 | offset = cvtnum(argv[optind]); | |
605 | if (offset < 0) { | |
606 | printf("non-numeric length argument -- %s\n", argv[optind]); | |
607 | return 0; | |
608 | } | |
609 | optind++; | |
610 | ||
611 | if (offset & 0x1ff) { | |
612 | printf("offset %lld is not sector aligned\n", | |
613 | (long long)offset); | |
614 | return 0; | |
615 | } | |
616 | ||
617 | if (count & 0x1ff) { | |
618 | printf("count %d is not sector aligned\n", | |
619 | count); | |
620 | return 0; | |
621 | } | |
622 | ||
623 | ||
624 | for (i = optind; i < argc; i++) { | |
625 | size_t len; | |
626 | ||
627 | len = cvtnum(argv[optind]); | |
628 | if (len < 0) { | |
629 | printf("non-numeric length argument -- %s\n", argv[i]); | |
630 | return 0; | |
631 | } | |
632 | count += len; | |
633 | } | |
634 | ||
635 | nr_iov = argc - optind; | |
636 | qemu_iovec_init(&qiov, nr_iov); | |
637 | buf = p = qemu_io_alloc(count, 0xab); | |
638 | for (i = 0; i < nr_iov; i++) { | |
639 | size_t len; | |
640 | ||
641 | len = cvtnum(argv[optind]); | |
642 | if (len < 0) { | |
643 | printf("non-numeric length argument -- %s\n", | |
644 | argv[optind]); | |
645 | return 0; | |
646 | } | |
647 | ||
648 | qemu_iovec_add(&qiov, p, len); | |
649 | p += len; | |
650 | optind++; | |
651 | } | |
652 | ||
653 | gettimeofday(&t1, NULL); | |
654 | cnt = do_aio_writev(&qiov, offset, &total); | |
655 | gettimeofday(&t2, NULL); | |
656 | ||
657 | if (cnt < 0) { | |
658 | printf("writev failed: %s\n", strerror(-cnt)); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | if (qflag) | |
663 | return 0; | |
664 | ||
665 | /* Finally, report back -- -C gives a parsable format */ | |
666 | t2 = tsub(t2, t1); | |
667 | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); | |
668 | ||
669 | qemu_io_free(buf); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | static const cmdinfo_t writev_cmd = { | |
675 | .name = "writev", | |
676 | .cfunc = writev_f, | |
677 | .argmin = 2, | |
678 | .argmax = -1, | |
679 | .args = "[-Cq] [-P pattern ] off len [len..]", | |
680 | .oneline = "writes a number of bytes at a specified offset", | |
681 | .help = writev_help, | |
682 | }; | |
683 | ||
684 | static int | |
685 | flush_f(int argc, char **argv) | |
686 | { | |
687 | bdrv_flush(bs); | |
688 | return 0; | |
689 | } | |
690 | ||
691 | static const cmdinfo_t flush_cmd = { | |
692 | .name = "flush", | |
693 | .altname = "f", | |
694 | .cfunc = flush_f, | |
695 | .oneline = "flush all in-core file state to disk", | |
696 | }; | |
697 | ||
698 | static int | |
699 | truncate_f(int argc, char **argv) | |
700 | { | |
701 | int64_t offset; | |
702 | int ret; | |
703 | ||
704 | offset = cvtnum(argv[1]); | |
705 | if (offset < 0) { | |
706 | printf("non-numeric truncate argument -- %s\n", argv[1]); | |
707 | return 0; | |
708 | } | |
709 | ||
710 | ret = bdrv_truncate(bs, offset); | |
711 | if (ret < 0) { | |
712 | printf("truncate: %s", strerror(ret)); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
719 | static const cmdinfo_t truncate_cmd = { | |
720 | .name = "truncate", | |
721 | .altname = "t", | |
722 | .cfunc = truncate_f, | |
723 | .argmin = 1, | |
724 | .argmax = 1, | |
725 | .args = "off", | |
726 | .oneline = "truncates the current file at the given offset", | |
727 | }; | |
728 | ||
729 | static int | |
730 | length_f(int argc, char **argv) | |
731 | { | |
732 | int64_t size; | |
733 | char s1[64]; | |
734 | ||
735 | size = bdrv_getlength(bs); | |
736 | if (size < 0) { | |
737 | printf("getlength: %s", strerror(size)); | |
738 | return 0; | |
739 | } | |
740 | ||
741 | cvtstr(size, s1, sizeof(s1)); | |
742 | printf("%s\n", s1); | |
743 | return 0; | |
744 | } | |
745 | ||
746 | ||
747 | static const cmdinfo_t length_cmd = { | |
748 | .name = "length", | |
749 | .altname = "l", | |
750 | .cfunc = length_f, | |
751 | .oneline = "gets the length of the current file", | |
752 | }; | |
753 | ||
754 | ||
755 | static int | |
756 | info_f(int argc, char **argv) | |
757 | { | |
758 | BlockDriverInfo bdi; | |
759 | char s1[64], s2[64]; | |
760 | int ret; | |
761 | ||
762 | if (bs->drv && bs->drv->format_name) | |
763 | printf("format name: %s\n", bs->drv->format_name); | |
764 | if (bs->drv && bs->drv->protocol_name) | |
765 | printf("format name: %s\n", bs->drv->protocol_name); | |
766 | ||
767 | ret = bdrv_get_info(bs, &bdi); | |
768 | if (ret) | |
769 | return 0; | |
770 | ||
771 | cvtstr(bdi.cluster_size, s1, sizeof(s1)); | |
772 | cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); | |
773 | ||
774 | printf("cluster size: %s\n", s1); | |
775 | printf("vm state offset: %s\n", s2); | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | ||
781 | ||
782 | static const cmdinfo_t info_cmd = { | |
783 | .name = "info", | |
784 | .altname = "i", | |
785 | .cfunc = info_f, | |
786 | .oneline = "prints information about the current file", | |
787 | }; | |
788 | ||
789 | static int | |
790 | alloc_f(int argc, char **argv) | |
791 | { | |
792 | int64_t offset; | |
793 | int nb_sectors; | |
794 | char s1[64]; | |
795 | int num; | |
796 | int ret; | |
797 | ||
798 | offset = cvtnum(argv[1]); | |
799 | if (offset & 0x1ff) { | |
800 | printf("offset %lld is not sector aligned\n", | |
801 | (long long)offset); | |
802 | return 0; | |
803 | } | |
804 | ||
805 | if (argc == 3) | |
806 | nb_sectors = cvtnum(argv[2]); | |
807 | else | |
808 | nb_sectors = 1; | |
809 | ||
810 | ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num); | |
811 | if (ret) { | |
812 | printf("is_allocated: %s", strerror(ret)); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | cvtstr(offset, s1, sizeof(s1)); | |
817 | ||
818 | if (nb_sectors == 1) | |
819 | printf("sector allocated at offset %s\n", s1); | |
820 | else | |
821 | printf("%d/%d sectors allocated at offset %s\n", | |
822 | num, nb_sectors, s1); | |
823 | return 0; | |
824 | } | |
825 | ||
826 | static const cmdinfo_t alloc_cmd = { | |
827 | .name = "alloc", | |
828 | .altname = "a", | |
829 | .argmin = 1, | |
830 | .argmax = 2, | |
831 | .cfunc = alloc_f, | |
832 | .args = "off [sectors]", | |
833 | .oneline = "checks if a sector is present in the file", | |
834 | }; | |
835 | ||
836 | static int | |
837 | close_f(int argc, char **argv) | |
838 | { | |
839 | bdrv_close(bs); | |
840 | bs = NULL; | |
841 | return 0; | |
842 | } | |
843 | ||
844 | static const cmdinfo_t close_cmd = { | |
845 | .name = "close", | |
846 | .altname = "c", | |
847 | .cfunc = close_f, | |
848 | .oneline = "close the current open file", | |
849 | }; | |
850 | ||
851 | static int openfile(char *name, int flags) | |
852 | { | |
853 | if (bs) { | |
854 | fprintf(stderr, "file open already, try 'help close'\n"); | |
855 | return 1; | |
856 | } | |
857 | ||
858 | bs = bdrv_new("hda"); | |
859 | if (!bs) | |
860 | return 1; | |
861 | ||
862 | if (bdrv_open(bs, name, flags) == -1) { | |
863 | fprintf(stderr, "%s: can't open device %s\n", progname, name); | |
864 | bs = NULL; | |
865 | return 1; | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | static void | |
872 | open_help(void) | |
873 | { | |
874 | printf( | |
875 | "\n" | |
876 | " opens a new file in the requested mode\n" | |
877 | "\n" | |
878 | " Example:\n" | |
879 | " 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n" | |
880 | "\n" | |
881 | " Opens a file for subsequent use by all of the other qemu-io commands.\n" | |
882 | " -C, -- create new file if it doesn't exist\n" | |
883 | " -r, -- open file read-only\n" | |
884 | " -s, -- use snapshot file\n" | |
885 | " -n, -- disable host cache\n" | |
886 | "\n"); | |
887 | } | |
888 | ||
889 | static const cmdinfo_t open_cmd; | |
890 | ||
891 | static int | |
892 | open_f(int argc, char **argv) | |
893 | { | |
894 | int flags = 0; | |
895 | int readonly = 0; | |
896 | int c; | |
897 | ||
898 | while ((c = getopt(argc, argv, "snCr")) != EOF) { | |
899 | switch (c) { | |
900 | case 's': | |
901 | flags |= BDRV_O_SNAPSHOT; | |
902 | break; | |
903 | case 'n': | |
904 | flags |= BDRV_O_NOCACHE; | |
905 | break; | |
906 | case 'C': | |
907 | flags |= BDRV_O_CREAT; | |
908 | break; | |
909 | case 'r': | |
910 | readonly = 1; | |
911 | break; | |
912 | default: | |
913 | return command_usage(&open_cmd); | |
914 | } | |
915 | } | |
916 | ||
917 | if (readonly) | |
918 | flags |= BDRV_O_RDONLY; | |
919 | else | |
920 | flags |= BDRV_O_RDWR; | |
921 | ||
922 | if (optind != argc - 1) | |
923 | return command_usage(&open_cmd); | |
924 | ||
925 | return openfile(argv[optind], flags); | |
926 | } | |
927 | ||
928 | static const cmdinfo_t open_cmd = { | |
929 | .name = "open", | |
930 | .altname = "o", | |
931 | .cfunc = open_f, | |
932 | .argmin = 1, | |
933 | .argmax = -1, | |
934 | .flags = CMD_NOFILE_OK, | |
935 | .args = "[-Crsn] [path]", | |
936 | .oneline = "open the file specified by path", | |
937 | .help = open_help, | |
938 | }; | |
939 | ||
940 | static int | |
941 | init_args_command( | |
942 | int index) | |
943 | { | |
944 | /* only one device allowed so far */ | |
945 | if (index >= 1) | |
946 | return 0; | |
947 | return ++index; | |
948 | } | |
949 | ||
950 | static int | |
951 | init_check_command( | |
952 | const cmdinfo_t *ct) | |
953 | { | |
954 | if (ct->flags & CMD_FLAG_GLOBAL) | |
955 | return 1; | |
956 | if (!(ct->flags & CMD_NOFILE_OK) && !bs) { | |
957 | fprintf(stderr, "no file open, try 'help open'\n"); | |
958 | return 0; | |
959 | } | |
960 | return 1; | |
961 | } | |
962 | ||
963 | static void usage(const char *name) | |
964 | { | |
965 | printf( | |
966 | "Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n" | |
967 | "QEMU Disk excerciser\n" | |
968 | "\n" | |
969 | " -C, --create create new file if it doesn't exist\n" | |
970 | " -c, --cmd command to execute\n" | |
971 | " -r, --read-only export read-only\n" | |
972 | " -s, --snapshot use snapshot file\n" | |
973 | " -n, --nocache disable host cache\n" | |
974 | " -m, --misalign misalign allocations for O_DIRECT\n" | |
975 | " -h, --help display this help and exit\n" | |
976 | " -V, --version output version information and exit\n" | |
977 | "\n", | |
978 | name); | |
979 | } | |
980 | ||
981 | ||
982 | int main(int argc, char **argv) | |
983 | { | |
984 | int readonly = 0; | |
985 | const char *sopt = "hVc:Crsnm"; | |
986 | struct option lopt[] = { | |
987 | { "help", 0, 0, 'h' }, | |
988 | { "version", 0, 0, 'V' }, | |
989 | { "offset", 1, 0, 'o' }, | |
990 | { "cmd", 1, 0, 'c' }, | |
991 | { "create", 0, 0, 'C' }, | |
992 | { "read-only", 0, 0, 'r' }, | |
993 | { "snapshot", 0, 0, 's' }, | |
994 | { "nocache", 0, 0, 'n' }, | |
995 | { "misalign", 0, 0, 'm' }, | |
996 | { NULL, 0, 0, 0 } | |
997 | }; | |
998 | int c; | |
999 | int opt_index = 0; | |
1000 | int flags = 0; | |
1001 | ||
1002 | progname = basename(argv[0]); | |
1003 | ||
1004 | while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { | |
1005 | switch (c) { | |
1006 | case 's': | |
1007 | flags |= BDRV_O_SNAPSHOT; | |
1008 | break; | |
1009 | case 'n': | |
1010 | flags |= BDRV_O_NOCACHE; | |
1011 | break; | |
1012 | case 'c': | |
1013 | add_user_command(optarg); | |
1014 | break; | |
1015 | case 'C': | |
1016 | flags |= BDRV_O_CREAT; | |
1017 | break; | |
1018 | case 'r': | |
1019 | readonly = 1; | |
1020 | break; | |
1021 | case 'm': | |
1022 | misalign = 1; | |
1023 | break; | |
1024 | case 'V': | |
1025 | printf("%s version %s\n", progname, VERSION); | |
1026 | exit(0); | |
1027 | case 'h': | |
1028 | usage(progname); | |
1029 | exit(0); | |
1030 | default: | |
1031 | usage(progname); | |
1032 | exit(1); | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | if ((argc - optind) > 1) { | |
1037 | usage(progname); | |
1038 | exit(1); | |
1039 | } | |
1040 | ||
1041 | bdrv_init(); | |
1042 | ||
1043 | /* initialize commands */ | |
1044 | quit_init(); | |
1045 | help_init(); | |
1046 | add_command(&open_cmd); | |
1047 | add_command(&close_cmd); | |
1048 | add_command(&read_cmd); | |
1049 | add_command(&readv_cmd); | |
1050 | add_command(&write_cmd); | |
1051 | add_command(&writev_cmd); | |
1052 | add_command(&flush_cmd); | |
1053 | add_command(&truncate_cmd); | |
1054 | add_command(&length_cmd); | |
1055 | add_command(&info_cmd); | |
1056 | add_command(&alloc_cmd); | |
1057 | ||
1058 | add_args_command(init_args_command); | |
1059 | add_check_command(init_check_command); | |
1060 | ||
1061 | /* open the device */ | |
1062 | if (readonly) | |
1063 | flags |= BDRV_O_RDONLY; | |
1064 | else | |
1065 | flags |= BDRV_O_RDWR; | |
1066 | ||
1067 | if ((argc - optind) == 1) | |
1068 | openfile(argv[optind], flags); | |
1069 | command_loop(); | |
1070 | ||
1071 | if (bs) | |
1072 | bdrv_close(bs); | |
1073 | return 0; | |
1074 | } |