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Commit | Line | Data |
---|---|---|
797ac58c KW |
1 | /* |
2 | * Command line utility to exercise the QEMU I/O path. | |
3 | * | |
093ea232 | 4 | * Copyright (C) 2009-2016 Red Hat, Inc. |
797ac58c KW |
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 | ||
80c71a24 | 11 | #include "qemu/osdep.h" |
da34e65c | 12 | #include "qapi/error.h" |
dc900c35 | 13 | #include "qapi/qmp/qdict.h" |
3d21994f | 14 | #include "qemu-io.h" |
4c7b7e9b HR |
15 | #include "sysemu/block-backend.h" |
16 | #include "block/block.h" | |
17 | #include "block/block_int.h" /* for info_f() */ | |
a8d8ecb7 | 18 | #include "block/qapi.h" |
d49b6836 | 19 | #include "qemu/error-report.h" |
6a1751b7 | 20 | #include "qemu/main-loop.h" |
922a01a0 | 21 | #include "qemu/option.h" |
cd33d02a | 22 | #include "qemu/timer.h" |
f348b6d1 | 23 | #include "qemu/cutils.h" |
5df022cf | 24 | #include "qemu/memalign.h" |
797ac58c KW |
25 | |
26 | #define CMD_NOFILE_OK 0x01 | |
27 | ||
f9883880 | 28 | bool qemuio_misalign; |
797ac58c | 29 | |
c2cdf5c5 KW |
30 | static cmdinfo_t *cmdtab; |
31 | static int ncmds; | |
32 | ||
33 | static int compare_cmdname(const void *a, const void *b) | |
34 | { | |
35 | return strcmp(((const cmdinfo_t *)a)->name, | |
36 | ((const cmdinfo_t *)b)->name); | |
37 | } | |
38 | ||
39 | void qemuio_add_command(const cmdinfo_t *ci) | |
40 | { | |
6aabeb58 PM |
41 | /* ci->perm assumes a file is open, but the GLOBAL and NOFILE_OK |
42 | * flags allow it not to be, so that combination is invalid. | |
43 | * Catch it now rather than letting it manifest as a crash if a | |
44 | * particular set of command line options are used. | |
45 | */ | |
46 | assert(ci->perm == 0 || | |
47 | (ci->flags & (CMD_FLAG_GLOBAL | CMD_NOFILE_OK)) == 0); | |
02c4f26b | 48 | cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); |
c2cdf5c5 KW |
49 | cmdtab[ncmds - 1] = *ci; |
50 | qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); | |
51 | } | |
52 | ||
b444d0e9 | 53 | void qemuio_command_usage(const cmdinfo_t *ci) |
c2cdf5c5 KW |
54 | { |
55 | printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); | |
c2cdf5c5 KW |
56 | } |
57 | ||
4c7b7e9b | 58 | static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) |
c2cdf5c5 KW |
59 | { |
60 | if (ct->flags & CMD_FLAG_GLOBAL) { | |
61 | return 1; | |
62 | } | |
4c7b7e9b | 63 | if (!(ct->flags & CMD_NOFILE_OK) && !blk) { |
c2cdf5c5 KW |
64 | fprintf(stderr, "no file open, try 'help open'\n"); |
65 | return 0; | |
66 | } | |
67 | return 1; | |
68 | } | |
69 | ||
b32d7a39 HR |
70 | static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, |
71 | char **argv) | |
c2cdf5c5 KW |
72 | { |
73 | char *cmd = argv[0]; | |
74 | ||
4c7b7e9b | 75 | if (!init_check_command(blk, ct)) { |
b32d7a39 | 76 | return -EINVAL; |
c2cdf5c5 KW |
77 | } |
78 | ||
79 | if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { | |
80 | if (ct->argmax == -1) { | |
81 | fprintf(stderr, | |
82 | "bad argument count %d to %s, expected at least %d arguments\n", | |
83 | argc-1, cmd, ct->argmin); | |
84 | } else if (ct->argmin == ct->argmax) { | |
85 | fprintf(stderr, | |
86 | "bad argument count %d to %s, expected %d arguments\n", | |
87 | argc-1, cmd, ct->argmin); | |
88 | } else { | |
89 | fprintf(stderr, | |
90 | "bad argument count %d to %s, expected between %d and %d arguments\n", | |
91 | argc-1, cmd, ct->argmin, ct->argmax); | |
92 | } | |
b32d7a39 | 93 | return -EINVAL; |
c2cdf5c5 | 94 | } |
887354bd | 95 | |
8eaf1018 VSO |
96 | /* |
97 | * Request additional permissions if necessary for this command. The caller | |
887354bd | 98 | * is responsible for restoring the original permissions afterwards if this |
8eaf1018 VSO |
99 | * is what it wants. |
100 | * | |
101 | * Coverity thinks that blk may be NULL in the following if condition. It's | |
102 | * not so: in init_check_command() we fail if blk is NULL for command with | |
103 | * both CMD_FLAG_GLOBAL and CMD_NOFILE_OK flags unset. And in | |
104 | * qemuio_add_command() we assert that command with non-zero .perm field | |
105 | * doesn't set this flags. So, the following assertion is to silence | |
106 | * Coverity: | |
107 | */ | |
108 | assert(blk || !ct->perm); | |
887354bd KW |
109 | if (ct->perm && blk_is_available(blk)) { |
110 | uint64_t orig_perm, orig_shared_perm; | |
111 | blk_get_perm(blk, &orig_perm, &orig_shared_perm); | |
112 | ||
113 | if (ct->perm & ~orig_perm) { | |
114 | uint64_t new_perm; | |
115 | Error *local_err = NULL; | |
116 | int ret; | |
117 | ||
118 | new_perm = orig_perm | ct->perm; | |
119 | ||
120 | ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err); | |
121 | if (ret < 0) { | |
122 | error_report_err(local_err); | |
b32d7a39 | 123 | return ret; |
887354bd KW |
124 | } |
125 | } | |
126 | } | |
127 | ||
d339d766 | 128 | qemu_reset_optind(); |
b32d7a39 | 129 | return ct->cfunc(blk, argc, argv); |
c2cdf5c5 KW |
130 | } |
131 | ||
132 | static const cmdinfo_t *find_command(const char *cmd) | |
133 | { | |
134 | cmdinfo_t *ct; | |
135 | ||
136 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { | |
137 | if (strcmp(ct->name, cmd) == 0 || | |
138 | (ct->altname && strcmp(ct->altname, cmd) == 0)) | |
139 | { | |
140 | return (const cmdinfo_t *)ct; | |
141 | } | |
142 | } | |
143 | return NULL; | |
144 | } | |
145 | ||
4694020d SH |
146 | /* Invoke fn() for commands with a matching prefix */ |
147 | void qemuio_complete_command(const char *input, | |
148 | void (*fn)(const char *cmd, void *opaque), | |
149 | void *opaque) | |
150 | { | |
151 | cmdinfo_t *ct; | |
152 | size_t input_len = strlen(input); | |
153 | ||
154 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { | |
155 | if (strncmp(input, ct->name, input_len) == 0) { | |
156 | fn(ct->name, opaque); | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
c2cdf5c5 KW |
161 | static char **breakline(char *input, int *count) |
162 | { | |
163 | int c = 0; | |
164 | char *p; | |
5839e53b | 165 | char **rval = g_new0(char *, 1); |
c2cdf5c5 KW |
166 | |
167 | while (rval && (p = qemu_strsep(&input, " ")) != NULL) { | |
168 | if (!*p) { | |
169 | continue; | |
170 | } | |
171 | c++; | |
08193dd5 | 172 | rval = g_renew(char *, rval, (c + 1)); |
c2cdf5c5 KW |
173 | rval[c - 1] = p; |
174 | rval[c] = NULL; | |
175 | } | |
176 | *count = c; | |
177 | return rval; | |
178 | } | |
179 | ||
797ac58c KW |
180 | static int64_t cvtnum(const char *s) |
181 | { | |
f17fd4fd | 182 | int err; |
f46bfdbf | 183 | uint64_t value; |
ef5a7885 | 184 | |
f17fd4fd MA |
185 | err = qemu_strtosz(s, NULL, &value); |
186 | if (err < 0) { | |
187 | return err; | |
188 | } | |
f46bfdbf MA |
189 | if (value > INT64_MAX) { |
190 | return -ERANGE; | |
191 | } | |
f17fd4fd | 192 | return value; |
797ac58c KW |
193 | } |
194 | ||
a9ecfa00 JS |
195 | static void print_cvtnum_err(int64_t rc, const char *arg) |
196 | { | |
197 | switch (rc) { | |
198 | case -EINVAL: | |
199 | printf("Parsing error: non-numeric argument," | |
200 | " or extraneous/unrecognized suffix -- %s\n", arg); | |
201 | break; | |
202 | case -ERANGE: | |
203 | printf("Parsing error: argument too large -- %s\n", arg); | |
204 | break; | |
205 | default: | |
206 | printf("Parsing error: %s\n", arg); | |
207 | } | |
208 | } | |
209 | ||
0b613881 KW |
210 | #define EXABYTES(x) ((long long)(x) << 60) |
211 | #define PETABYTES(x) ((long long)(x) << 50) | |
212 | #define TERABYTES(x) ((long long)(x) << 40) | |
213 | #define GIGABYTES(x) ((long long)(x) << 30) | |
214 | #define MEGABYTES(x) ((long long)(x) << 20) | |
215 | #define KILOBYTES(x) ((long long)(x) << 10) | |
216 | ||
217 | #define TO_EXABYTES(x) ((x) / EXABYTES(1)) | |
218 | #define TO_PETABYTES(x) ((x) / PETABYTES(1)) | |
219 | #define TO_TERABYTES(x) ((x) / TERABYTES(1)) | |
220 | #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) | |
221 | #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) | |
222 | #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) | |
223 | ||
224 | static void cvtstr(double value, char *str, size_t size) | |
225 | { | |
226 | char *trim; | |
227 | const char *suffix; | |
228 | ||
229 | if (value >= EXABYTES(1)) { | |
230 | suffix = " EiB"; | |
231 | snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); | |
232 | } else if (value >= PETABYTES(1)) { | |
233 | suffix = " PiB"; | |
234 | snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); | |
235 | } else if (value >= TERABYTES(1)) { | |
236 | suffix = " TiB"; | |
237 | snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); | |
238 | } else if (value >= GIGABYTES(1)) { | |
239 | suffix = " GiB"; | |
240 | snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); | |
241 | } else if (value >= MEGABYTES(1)) { | |
242 | suffix = " MiB"; | |
243 | snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); | |
244 | } else if (value >= KILOBYTES(1)) { | |
245 | suffix = " KiB"; | |
246 | snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); | |
247 | } else { | |
248 | suffix = " bytes"; | |
249 | snprintf(str, size - 6, "%f", value); | |
250 | } | |
251 | ||
252 | trim = strstr(str, ".000"); | |
253 | if (trim) { | |
254 | strcpy(trim, suffix); | |
255 | } else { | |
256 | strcat(str, suffix); | |
257 | } | |
258 | } | |
259 | ||
260 | ||
261 | ||
50290c00 | 262 | static struct timespec tsub(struct timespec t1, struct timespec t2) |
0b613881 | 263 | { |
50290c00 AB |
264 | t1.tv_nsec -= t2.tv_nsec; |
265 | if (t1.tv_nsec < 0) { | |
266 | t1.tv_nsec += NANOSECONDS_PER_SECOND; | |
0b613881 KW |
267 | t1.tv_sec--; |
268 | } | |
269 | t1.tv_sec -= t2.tv_sec; | |
270 | return t1; | |
271 | } | |
272 | ||
50290c00 | 273 | static double tdiv(double value, struct timespec tv) |
0b613881 | 274 | { |
50290c00 AB |
275 | double seconds = tv.tv_sec + (tv.tv_nsec / 1e9); |
276 | return value / seconds; | |
0b613881 KW |
277 | } |
278 | ||
279 | #define HOURS(sec) ((sec) / (60 * 60)) | |
280 | #define MINUTES(sec) (((sec) % (60 * 60)) / 60) | |
281 | #define SECONDS(sec) ((sec) % 60) | |
282 | ||
283 | enum { | |
284 | DEFAULT_TIME = 0x0, | |
285 | TERSE_FIXED_TIME = 0x1, | |
286 | VERBOSE_FIXED_TIME = 0x2, | |
287 | }; | |
288 | ||
50290c00 | 289 | static void timestr(struct timespec *tv, char *ts, size_t size, int format) |
0b613881 | 290 | { |
50290c00 | 291 | double frac_sec = tv->tv_nsec / 1e9; |
0b613881 KW |
292 | |
293 | if (format & TERSE_FIXED_TIME) { | |
294 | if (!HOURS(tv->tv_sec)) { | |
50290c00 AB |
295 | snprintf(ts, size, "%u:%05.2f", |
296 | (unsigned int) MINUTES(tv->tv_sec), | |
297 | SECONDS(tv->tv_sec) + frac_sec); | |
0b613881 KW |
298 | return; |
299 | } | |
300 | format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ | |
301 | } | |
302 | ||
303 | if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { | |
50290c00 | 304 | snprintf(ts, size, "%u:%02u:%05.2f", |
0b613881 KW |
305 | (unsigned int) HOURS(tv->tv_sec), |
306 | (unsigned int) MINUTES(tv->tv_sec), | |
50290c00 | 307 | SECONDS(tv->tv_sec) + frac_sec); |
0b613881 | 308 | } else { |
50290c00 | 309 | snprintf(ts, size, "%05.2f sec", frac_sec); |
0b613881 KW |
310 | } |
311 | } | |
312 | ||
797ac58c KW |
313 | /* |
314 | * Parse the pattern argument to various sub-commands. | |
315 | * | |
316 | * Because the pattern is used as an argument to memset it must evaluate | |
317 | * to an unsigned integer that fits into a single byte. | |
318 | */ | |
319 | static int parse_pattern(const char *arg) | |
320 | { | |
321 | char *endptr = NULL; | |
322 | long pattern; | |
323 | ||
324 | pattern = strtol(arg, &endptr, 0); | |
325 | if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { | |
326 | printf("%s is not a valid pattern byte\n", arg); | |
327 | return -1; | |
328 | } | |
329 | ||
330 | return pattern; | |
331 | } | |
332 | ||
333 | /* | |
334 | * Memory allocation helpers. | |
335 | * | |
336 | * Make sure memory is aligned by default, or purposefully misaligned if | |
337 | * that is specified on the command line. | |
338 | */ | |
339 | ||
340 | #define MISALIGN_OFFSET 16 | |
4c7b7e9b | 341 | static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) |
797ac58c KW |
342 | { |
343 | void *buf; | |
344 | ||
345 | if (qemuio_misalign) { | |
346 | len += MISALIGN_OFFSET; | |
347 | } | |
4c7b7e9b | 348 | buf = blk_blockalign(blk, len); |
797ac58c KW |
349 | memset(buf, pattern, len); |
350 | if (qemuio_misalign) { | |
351 | buf += MISALIGN_OFFSET; | |
352 | } | |
353 | return buf; | |
354 | } | |
355 | ||
356 | static void qemu_io_free(void *p) | |
357 | { | |
358 | if (qemuio_misalign) { | |
359 | p -= MISALIGN_OFFSET; | |
360 | } | |
361 | qemu_vfree(p); | |
362 | } | |
363 | ||
4d731510 DP |
364 | /* |
365 | * qemu_io_alloc_from_file() | |
366 | * | |
367 | * Allocates the buffer and populates it with the content of the given file | |
368 | * up to @len bytes. If the file length is less than @len, then the buffer | |
369 | * is populated with the file content cyclically. | |
370 | * | |
371 | * @blk - the block backend where the buffer content is going to be written to | |
372 | * @len - the buffer length | |
373 | * @file_name - the file to read the content from | |
374 | * | |
375 | * Returns: the buffer pointer on success | |
376 | * NULL on error | |
377 | */ | |
378 | static void *qemu_io_alloc_from_file(BlockBackend *blk, size_t len, | |
379 | const char *file_name) | |
380 | { | |
381 | char *buf, *buf_origin; | |
382 | FILE *f = fopen(file_name, "r"); | |
383 | int pattern_len; | |
384 | ||
385 | if (!f) { | |
386 | perror(file_name); | |
387 | return NULL; | |
388 | } | |
389 | ||
390 | if (qemuio_misalign) { | |
391 | len += MISALIGN_OFFSET; | |
392 | } | |
393 | ||
394 | buf_origin = buf = blk_blockalign(blk, len); | |
395 | ||
396 | if (qemuio_misalign) { | |
397 | buf_origin += MISALIGN_OFFSET; | |
398 | buf += MISALIGN_OFFSET; | |
399 | len -= MISALIGN_OFFSET; | |
400 | } | |
401 | ||
402 | pattern_len = fread(buf_origin, 1, len, f); | |
403 | ||
404 | if (ferror(f)) { | |
405 | perror(file_name); | |
406 | goto error; | |
407 | } | |
408 | ||
409 | if (pattern_len == 0) { | |
410 | fprintf(stderr, "%s: file is empty\n", file_name); | |
411 | goto error; | |
412 | } | |
413 | ||
414 | fclose(f); | |
c8e68b43 | 415 | f = NULL; |
4d731510 DP |
416 | |
417 | if (len > pattern_len) { | |
418 | len -= pattern_len; | |
419 | buf += pattern_len; | |
420 | ||
421 | while (len > 0) { | |
422 | size_t len_to_copy = MIN(pattern_len, len); | |
423 | ||
424 | memcpy(buf, buf_origin, len_to_copy); | |
425 | ||
426 | len -= len_to_copy; | |
427 | buf += len_to_copy; | |
428 | } | |
429 | } | |
430 | ||
431 | return buf_origin; | |
432 | ||
433 | error: | |
434 | qemu_io_free(buf_origin); | |
c8e68b43 KW |
435 | if (f) { |
436 | fclose(f); | |
437 | } | |
4d731510 DP |
438 | return NULL; |
439 | } | |
440 | ||
9b0beaf3 | 441 | static void dump_buffer(const void *buffer, int64_t offset, int64_t len) |
797ac58c | 442 | { |
9b0beaf3 JS |
443 | uint64_t i; |
444 | int j; | |
797ac58c KW |
445 | const uint8_t *p; |
446 | ||
447 | for (i = 0, p = buffer; i < len; i += 16) { | |
448 | const uint8_t *s = p; | |
449 | ||
450 | printf("%08" PRIx64 ": ", offset + i); | |
451 | for (j = 0; j < 16 && i + j < len; j++, p++) { | |
452 | printf("%02x ", *p); | |
453 | } | |
454 | printf(" "); | |
455 | for (j = 0; j < 16 && i + j < len; j++, s++) { | |
456 | if (isalnum(*s)) { | |
457 | printf("%c", *s); | |
458 | } else { | |
459 | printf("."); | |
460 | } | |
461 | } | |
462 | printf("\n"); | |
463 | } | |
464 | } | |
465 | ||
50290c00 | 466 | static void print_report(const char *op, struct timespec *t, int64_t offset, |
dc38852a | 467 | int64_t count, int64_t total, int cnt, bool Cflag) |
797ac58c KW |
468 | { |
469 | char s1[64], s2[64], ts[64]; | |
470 | ||
471 | timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); | |
472 | if (!Cflag) { | |
473 | cvtstr((double)total, s1, sizeof(s1)); | |
474 | cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); | |
9b0beaf3 | 475 | printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", |
797ac58c KW |
476 | op, total, count, offset); |
477 | printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", | |
478 | s1, cnt, ts, s2, tdiv((double)cnt, *t)); | |
479 | } else {/* bytes,ops,time,bytes/sec,ops/sec */ | |
9b0beaf3 | 480 | printf("%"PRId64",%d,%s,%.3f,%.3f\n", |
797ac58c KW |
481 | total, cnt, ts, |
482 | tdiv((double)total, *t), | |
483 | tdiv((double)cnt, *t)); | |
484 | } | |
485 | } | |
486 | ||
487 | /* | |
488 | * Parse multiple length statements for vectored I/O, and construct an I/O | |
489 | * vector matching it. | |
490 | */ | |
491 | static void * | |
4c7b7e9b | 492 | create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, |
797ac58c KW |
493 | int pattern) |
494 | { | |
495 | size_t *sizes = g_new0(size_t, nr_iov); | |
496 | size_t count = 0; | |
497 | void *buf = NULL; | |
498 | void *p; | |
499 | int i; | |
500 | ||
501 | for (i = 0; i < nr_iov; i++) { | |
502 | char *arg = argv[i]; | |
503 | int64_t len; | |
504 | ||
505 | len = cvtnum(arg); | |
506 | if (len < 0) { | |
a9ecfa00 | 507 | print_cvtnum_err(len, arg); |
797ac58c KW |
508 | goto fail; |
509 | } | |
510 | ||
3026c468 AG |
511 | if (len > BDRV_REQUEST_MAX_BYTES) { |
512 | printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, | |
513 | (uint64_t)BDRV_REQUEST_MAX_BYTES); | |
514 | goto fail; | |
515 | } | |
516 | ||
517 | if (count > BDRV_REQUEST_MAX_BYTES - len) { | |
518 | printf("The total number of bytes exceed the maximum size %" PRIu64 | |
519 | "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); | |
797ac58c KW |
520 | goto fail; |
521 | } | |
522 | ||
797ac58c KW |
523 | sizes[i] = len; |
524 | count += len; | |
525 | } | |
526 | ||
527 | qemu_iovec_init(qiov, nr_iov); | |
528 | ||
4c7b7e9b | 529 | buf = p = qemu_io_alloc(blk, count, pattern); |
797ac58c KW |
530 | |
531 | for (i = 0; i < nr_iov; i++) { | |
532 | qemu_iovec_add(qiov, p, sizes[i]); | |
533 | p += sizes[i]; | |
534 | } | |
535 | ||
536 | fail: | |
537 | g_free(sizes); | |
538 | return buf; | |
539 | } | |
540 | ||
9b0beaf3 | 541 | static int do_pread(BlockBackend *blk, char *buf, int64_t offset, |
f5a5ca79 | 542 | int64_t bytes, int64_t *total) |
797ac58c | 543 | { |
bf5b16fa AF |
544 | int ret; |
545 | ||
f5a5ca79 | 546 | if (bytes > INT_MAX) { |
9b0beaf3 JS |
547 | return -ERANGE; |
548 | } | |
549 | ||
a9262f55 | 550 | ret = blk_pread(blk, offset, bytes, (uint8_t *)buf, 0); |
bf5b16fa AF |
551 | if (ret < 0) { |
552 | return ret; | |
797ac58c | 553 | } |
bf5b16fa | 554 | *total = bytes; |
797ac58c KW |
555 | return 1; |
556 | } | |
557 | ||
9b0beaf3 | 558 | static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, |
f5a5ca79 | 559 | int64_t bytes, int flags, int64_t *total) |
797ac58c | 560 | { |
bf5b16fa AF |
561 | int ret; |
562 | ||
f5a5ca79 | 563 | if (bytes > INT_MAX) { |
9b0beaf3 JS |
564 | return -ERANGE; |
565 | } | |
566 | ||
a9262f55 | 567 | ret = blk_pwrite(blk, offset, bytes, (uint8_t *)buf, flags); |
bf5b16fa AF |
568 | if (ret < 0) { |
569 | return ret; | |
797ac58c | 570 | } |
bf5b16fa | 571 | *total = bytes; |
797ac58c KW |
572 | return 1; |
573 | } | |
574 | ||
264dcbb2 | 575 | static int do_pwrite_zeroes(BlockBackend *blk, int64_t offset, |
f5a5ca79 | 576 | int64_t bytes, int flags, int64_t *total) |
797ac58c | 577 | { |
264dcbb2 PB |
578 | int ret = blk_pwrite_zeroes(blk, offset, bytes, |
579 | flags | BDRV_REQ_ZERO_WRITE); | |
580 | ||
581 | if (ret < 0) { | |
582 | return ret; | |
797ac58c | 583 | } |
264dcbb2 PB |
584 | *total = bytes; |
585 | return 1; | |
797ac58c KW |
586 | } |
587 | ||
4c7b7e9b | 588 | static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, |
f5a5ca79 | 589 | int64_t bytes, int64_t *total) |
797ac58c KW |
590 | { |
591 | int ret; | |
592 | ||
41ae31e3 | 593 | if (bytes > BDRV_REQUEST_MAX_BYTES) { |
9b0beaf3 JS |
594 | return -ERANGE; |
595 | } | |
596 | ||
0cadf2c8 | 597 | ret = blk_pwrite_compressed(blk, offset, bytes, buf); |
797ac58c KW |
598 | if (ret < 0) { |
599 | return ret; | |
600 | } | |
f5a5ca79 | 601 | *total = bytes; |
797ac58c KW |
602 | return 1; |
603 | } | |
604 | ||
4c7b7e9b | 605 | static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, |
9b0beaf3 | 606 | int64_t count, int64_t *total) |
797ac58c | 607 | { |
9b0beaf3 JS |
608 | if (count > INT_MAX) { |
609 | return -ERANGE; | |
610 | } | |
611 | ||
4c7b7e9b | 612 | *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); |
797ac58c KW |
613 | if (*total < 0) { |
614 | return *total; | |
615 | } | |
616 | return 1; | |
617 | } | |
618 | ||
4c7b7e9b | 619 | static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, |
9b0beaf3 | 620 | int64_t count, int64_t *total) |
797ac58c | 621 | { |
9b0beaf3 JS |
622 | if (count > INT_MAX) { |
623 | return -ERANGE; | |
624 | } | |
625 | ||
4c7b7e9b | 626 | *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); |
797ac58c KW |
627 | if (*total < 0) { |
628 | return *total; | |
629 | } | |
630 | return 1; | |
631 | } | |
632 | ||
633 | #define NOT_DONE 0x7fffffff | |
634 | static void aio_rw_done(void *opaque, int ret) | |
635 | { | |
636 | *(int *)opaque = ret; | |
637 | } | |
638 | ||
4c7b7e9b | 639 | static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, |
797ac58c KW |
640 | int64_t offset, int *total) |
641 | { | |
642 | int async_ret = NOT_DONE; | |
643 | ||
7b3f9712 | 644 | blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); |
797ac58c KW |
645 | while (async_ret == NOT_DONE) { |
646 | main_loop_wait(false); | |
647 | } | |
648 | ||
649 | *total = qiov->size; | |
650 | return async_ret < 0 ? async_ret : 1; | |
651 | } | |
652 | ||
4c7b7e9b | 653 | static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, |
770e0e0e | 654 | int64_t offset, int flags, int *total) |
797ac58c KW |
655 | { |
656 | int async_ret = NOT_DONE; | |
657 | ||
770e0e0e | 658 | blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); |
797ac58c KW |
659 | while (async_ret == NOT_DONE) { |
660 | main_loop_wait(false); | |
661 | } | |
662 | ||
663 | *total = qiov->size; | |
664 | return async_ret < 0 ? async_ret : 1; | |
665 | } | |
666 | ||
797ac58c KW |
667 | static void read_help(void) |
668 | { | |
669 | printf( | |
670 | "\n" | |
671 | " reads a range of bytes from the given offset\n" | |
672 | "\n" | |
673 | " Example:\n" | |
674 | " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" | |
675 | "\n" | |
676 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
677 | " standard output stream (with -v option) for subsequent inspection.\n" | |
678 | " -b, -- read from the VM state rather than the virtual disk\n" | |
679 | " -C, -- report statistics in a machine parsable format\n" | |
680 | " -l, -- length for pattern verification (only with -P)\n" | |
093ea232 | 681 | " -p, -- ignored for backwards compatibility\n" |
797ac58c KW |
682 | " -P, -- use a pattern to verify read data\n" |
683 | " -q, -- quiet mode, do not show I/O statistics\n" | |
684 | " -s, -- start offset for pattern verification (only with -P)\n" | |
685 | " -v, -- dump buffer to standard output\n" | |
686 | "\n"); | |
687 | } | |
688 | ||
b32d7a39 | 689 | static int read_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
690 | |
691 | static const cmdinfo_t read_cmd = { | |
692 | .name = "read", | |
693 | .altname = "r", | |
694 | .cfunc = read_f, | |
695 | .argmin = 2, | |
696 | .argmax = -1, | |
093ea232 | 697 | .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", |
797ac58c KW |
698 | .oneline = "reads a number of bytes at a specified offset", |
699 | .help = read_help, | |
700 | }; | |
701 | ||
b32d7a39 | 702 | static int read_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 703 | { |
50290c00 | 704 | struct timespec t1, t2; |
093ea232 | 705 | bool Cflag = false, qflag = false, vflag = false; |
dc38852a | 706 | bool Pflag = false, sflag = false, lflag = false, bflag = false; |
b32d7a39 | 707 | int c, cnt, ret; |
797ac58c KW |
708 | char *buf; |
709 | int64_t offset; | |
9b0beaf3 | 710 | int64_t count; |
797ac58c | 711 | /* Some compilers get confused and warn if this is not initialized. */ |
9b0beaf3 JS |
712 | int64_t total = 0; |
713 | int pattern = 0; | |
714 | int64_t pattern_offset = 0, pattern_count = 0; | |
797ac58c | 715 | |
b062ad86 | 716 | while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { |
797ac58c KW |
717 | switch (c) { |
718 | case 'b': | |
dc38852a | 719 | bflag = true; |
797ac58c KW |
720 | break; |
721 | case 'C': | |
dc38852a | 722 | Cflag = true; |
797ac58c KW |
723 | break; |
724 | case 'l': | |
dc38852a | 725 | lflag = true; |
797ac58c KW |
726 | pattern_count = cvtnum(optarg); |
727 | if (pattern_count < 0) { | |
a9ecfa00 | 728 | print_cvtnum_err(pattern_count, optarg); |
b32d7a39 | 729 | return pattern_count; |
797ac58c KW |
730 | } |
731 | break; | |
732 | case 'p': | |
093ea232 | 733 | /* Ignored for backwards compatibility */ |
797ac58c KW |
734 | break; |
735 | case 'P': | |
dc38852a | 736 | Pflag = true; |
797ac58c KW |
737 | pattern = parse_pattern(optarg); |
738 | if (pattern < 0) { | |
b32d7a39 | 739 | return -EINVAL; |
797ac58c KW |
740 | } |
741 | break; | |
742 | case 'q': | |
dc38852a | 743 | qflag = true; |
797ac58c KW |
744 | break; |
745 | case 's': | |
dc38852a | 746 | sflag = true; |
797ac58c KW |
747 | pattern_offset = cvtnum(optarg); |
748 | if (pattern_offset < 0) { | |
a9ecfa00 | 749 | print_cvtnum_err(pattern_offset, optarg); |
b32d7a39 | 750 | return pattern_offset; |
797ac58c KW |
751 | } |
752 | break; | |
753 | case 'v': | |
dc38852a | 754 | vflag = true; |
797ac58c KW |
755 | break; |
756 | default: | |
b444d0e9 | 757 | qemuio_command_usage(&read_cmd); |
b32d7a39 | 758 | return -EINVAL; |
797ac58c KW |
759 | } |
760 | } | |
761 | ||
762 | if (optind != argc - 2) { | |
b444d0e9 | 763 | qemuio_command_usage(&read_cmd); |
b32d7a39 | 764 | return -EINVAL; |
797ac58c KW |
765 | } |
766 | ||
797ac58c KW |
767 | offset = cvtnum(argv[optind]); |
768 | if (offset < 0) { | |
a9ecfa00 | 769 | print_cvtnum_err(offset, argv[optind]); |
b32d7a39 | 770 | return offset; |
797ac58c KW |
771 | } |
772 | ||
773 | optind++; | |
774 | count = cvtnum(argv[optind]); | |
775 | if (count < 0) { | |
a9ecfa00 | 776 | print_cvtnum_err(count, argv[optind]); |
b32d7a39 | 777 | return count; |
3026c468 | 778 | } else if (count > BDRV_REQUEST_MAX_BYTES) { |
9b0beaf3 | 779 | printf("length cannot exceed %" PRIu64 ", given %s\n", |
3026c468 | 780 | (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); |
b32d7a39 | 781 | return -EINVAL; |
797ac58c KW |
782 | } |
783 | ||
784 | if (!Pflag && (lflag || sflag)) { | |
b444d0e9 | 785 | qemuio_command_usage(&read_cmd); |
b32d7a39 | 786 | return -EINVAL; |
797ac58c KW |
787 | } |
788 | ||
789 | if (!lflag) { | |
790 | pattern_count = count - pattern_offset; | |
791 | } | |
792 | ||
793 | if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { | |
794 | printf("pattern verification range exceeds end of read data\n"); | |
b32d7a39 | 795 | return -EINVAL; |
797ac58c KW |
796 | } |
797 | ||
093ea232 | 798 | if (bflag) { |
1bce6b4c EB |
799 | if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { |
800 | printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", | |
797ac58c | 801 | offset); |
b32d7a39 | 802 | return -EINVAL; |
797ac58c | 803 | } |
1bce6b4c EB |
804 | if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { |
805 | printf("%"PRId64" is not a sector-aligned value for 'count'\n", | |
797ac58c | 806 | count); |
b32d7a39 | 807 | return -EINVAL; |
797ac58c KW |
808 | } |
809 | } | |
810 | ||
4c7b7e9b | 811 | buf = qemu_io_alloc(blk, count, 0xab); |
797ac58c | 812 | |
50290c00 | 813 | clock_gettime(CLOCK_MONOTONIC, &t1); |
7b3f9712 | 814 | if (bflag) { |
b32d7a39 | 815 | ret = do_load_vmstate(blk, buf, offset, count, &total); |
797ac58c | 816 | } else { |
b32d7a39 | 817 | ret = do_pread(blk, buf, offset, count, &total); |
797ac58c | 818 | } |
50290c00 | 819 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c | 820 | |
b32d7a39 HR |
821 | if (ret < 0) { |
822 | printf("read failed: %s\n", strerror(-ret)); | |
797ac58c KW |
823 | goto out; |
824 | } | |
b32d7a39 HR |
825 | cnt = ret; |
826 | ||
827 | ret = 0; | |
797ac58c KW |
828 | |
829 | if (Pflag) { | |
830 | void *cmp_buf = g_malloc(pattern_count); | |
831 | memset(cmp_buf, pattern, pattern_count); | |
832 | if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { | |
833 | printf("Pattern verification failed at offset %" | |
9b0beaf3 | 834 | PRId64 ", %"PRId64" bytes\n", |
797ac58c | 835 | offset + pattern_offset, pattern_count); |
b32d7a39 | 836 | ret = -EINVAL; |
797ac58c KW |
837 | } |
838 | g_free(cmp_buf); | |
839 | } | |
840 | ||
841 | if (qflag) { | |
842 | goto out; | |
843 | } | |
844 | ||
845 | if (vflag) { | |
846 | dump_buffer(buf, offset, count); | |
847 | } | |
848 | ||
849 | /* Finally, report back -- -C gives a parsable format */ | |
850 | t2 = tsub(t2, t1); | |
851 | print_report("read", &t2, offset, count, total, cnt, Cflag); | |
852 | ||
853 | out: | |
854 | qemu_io_free(buf); | |
b32d7a39 | 855 | return ret; |
797ac58c KW |
856 | } |
857 | ||
858 | static void readv_help(void) | |
859 | { | |
860 | printf( | |
861 | "\n" | |
862 | " reads a range of bytes from the given offset into multiple buffers\n" | |
863 | "\n" | |
864 | " Example:\n" | |
865 | " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
866 | "\n" | |
867 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
868 | " standard output stream (with -v option) for subsequent inspection.\n" | |
869 | " Uses multiple iovec buffers if more than one byte range is specified.\n" | |
870 | " -C, -- report statistics in a machine parsable format\n" | |
871 | " -P, -- use a pattern to verify read data\n" | |
872 | " -v, -- dump buffer to standard output\n" | |
873 | " -q, -- quiet mode, do not show I/O statistics\n" | |
874 | "\n"); | |
875 | } | |
876 | ||
b32d7a39 | 877 | static int readv_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
878 | |
879 | static const cmdinfo_t readv_cmd = { | |
880 | .name = "readv", | |
881 | .cfunc = readv_f, | |
882 | .argmin = 2, | |
883 | .argmax = -1, | |
093ea232 | 884 | .args = "[-Cqv] [-P pattern] off len [len..]", |
797ac58c KW |
885 | .oneline = "reads a number of bytes at a specified offset", |
886 | .help = readv_help, | |
887 | }; | |
888 | ||
b32d7a39 | 889 | static int readv_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 890 | { |
50290c00 | 891 | struct timespec t1, t2; |
dc38852a | 892 | bool Cflag = false, qflag = false, vflag = false; |
b32d7a39 | 893 | int c, cnt, ret; |
797ac58c KW |
894 | char *buf; |
895 | int64_t offset; | |
896 | /* Some compilers get confused and warn if this is not initialized. */ | |
897 | int total = 0; | |
898 | int nr_iov; | |
899 | QEMUIOVector qiov; | |
900 | int pattern = 0; | |
dc38852a | 901 | bool Pflag = false; |
797ac58c | 902 | |
b062ad86 | 903 | while ((c = getopt(argc, argv, "CP:qv")) != -1) { |
797ac58c KW |
904 | switch (c) { |
905 | case 'C': | |
dc38852a | 906 | Cflag = true; |
797ac58c KW |
907 | break; |
908 | case 'P': | |
dc38852a | 909 | Pflag = true; |
797ac58c KW |
910 | pattern = parse_pattern(optarg); |
911 | if (pattern < 0) { | |
b32d7a39 | 912 | return -EINVAL; |
797ac58c KW |
913 | } |
914 | break; | |
915 | case 'q': | |
dc38852a | 916 | qflag = true; |
797ac58c KW |
917 | break; |
918 | case 'v': | |
dc38852a | 919 | vflag = true; |
797ac58c KW |
920 | break; |
921 | default: | |
b444d0e9 | 922 | qemuio_command_usage(&readv_cmd); |
b32d7a39 | 923 | return -EINVAL; |
797ac58c KW |
924 | } |
925 | } | |
926 | ||
927 | if (optind > argc - 2) { | |
b444d0e9 | 928 | qemuio_command_usage(&readv_cmd); |
b32d7a39 | 929 | return -EINVAL; |
797ac58c KW |
930 | } |
931 | ||
932 | ||
933 | offset = cvtnum(argv[optind]); | |
934 | if (offset < 0) { | |
a9ecfa00 | 935 | print_cvtnum_err(offset, argv[optind]); |
b32d7a39 | 936 | return offset; |
797ac58c KW |
937 | } |
938 | optind++; | |
939 | ||
797ac58c | 940 | nr_iov = argc - optind; |
4c7b7e9b | 941 | buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); |
797ac58c | 942 | if (buf == NULL) { |
b32d7a39 | 943 | return -EINVAL; |
797ac58c KW |
944 | } |
945 | ||
50290c00 | 946 | clock_gettime(CLOCK_MONOTONIC, &t1); |
b32d7a39 | 947 | ret = do_aio_readv(blk, &qiov, offset, &total); |
50290c00 | 948 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c | 949 | |
b32d7a39 HR |
950 | if (ret < 0) { |
951 | printf("readv failed: %s\n", strerror(-ret)); | |
797ac58c KW |
952 | goto out; |
953 | } | |
b32d7a39 HR |
954 | cnt = ret; |
955 | ||
956 | ret = 0; | |
797ac58c KW |
957 | |
958 | if (Pflag) { | |
959 | void *cmp_buf = g_malloc(qiov.size); | |
960 | memset(cmp_buf, pattern, qiov.size); | |
961 | if (memcmp(buf, cmp_buf, qiov.size)) { | |
962 | printf("Pattern verification failed at offset %" | |
cf67b692 | 963 | PRId64 ", %zu bytes\n", offset, qiov.size); |
b32d7a39 | 964 | ret = -EINVAL; |
797ac58c KW |
965 | } |
966 | g_free(cmp_buf); | |
967 | } | |
968 | ||
969 | if (qflag) { | |
970 | goto out; | |
971 | } | |
972 | ||
973 | if (vflag) { | |
974 | dump_buffer(buf, offset, qiov.size); | |
975 | } | |
976 | ||
977 | /* Finally, report back -- -C gives a parsable format */ | |
978 | t2 = tsub(t2, t1); | |
979 | print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); | |
980 | ||
981 | out: | |
982 | qemu_iovec_destroy(&qiov); | |
983 | qemu_io_free(buf); | |
b32d7a39 | 984 | return ret; |
797ac58c KW |
985 | } |
986 | ||
987 | static void write_help(void) | |
988 | { | |
989 | printf( | |
990 | "\n" | |
991 | " writes a range of bytes from the given offset\n" | |
992 | "\n" | |
993 | " Example:\n" | |
994 | " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" | |
995 | "\n" | |
996 | " Writes into a segment of the currently open file, using a buffer\n" | |
997 | " filled with a set pattern (0xcdcdcdcd).\n" | |
998 | " -b, -- write to the VM state rather than the virtual disk\n" | |
4c7b7e9b | 999 | " -c, -- write compressed data with blk_write_compressed\n" |
770e0e0e | 1000 | " -f, -- use Force Unit Access semantics\n" |
c6e3f520 | 1001 | " -n, -- with -z, don't allow slow fallback\n" |
093ea232 | 1002 | " -p, -- ignored for backwards compatibility\n" |
797ac58c | 1003 | " -P, -- use different pattern to fill file\n" |
4d731510 | 1004 | " -s, -- use a pattern file to fill the write buffer\n" |
797ac58c KW |
1005 | " -C, -- report statistics in a machine parsable format\n" |
1006 | " -q, -- quiet mode, do not show I/O statistics\n" | |
c2e001cc | 1007 | " -u, -- with -z, allow unmapping\n" |
264dcbb2 | 1008 | " -z, -- write zeroes using blk_pwrite_zeroes\n" |
797ac58c KW |
1009 | "\n"); |
1010 | } | |
1011 | ||
b32d7a39 | 1012 | static int write_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
1013 | |
1014 | static const cmdinfo_t write_cmd = { | |
1015 | .name = "write", | |
1016 | .altname = "w", | |
1017 | .cfunc = write_f, | |
887354bd | 1018 | .perm = BLK_PERM_WRITE, |
797ac58c KW |
1019 | .argmin = 2, |
1020 | .argmax = -1, | |
4d731510 | 1021 | .args = "[-bcCfnquz] [-P pattern | -s source_file] off len", |
797ac58c KW |
1022 | .oneline = "writes a number of bytes at a specified offset", |
1023 | .help = write_help, | |
1024 | }; | |
1025 | ||
b32d7a39 | 1026 | static int write_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1027 | { |
50290c00 | 1028 | struct timespec t1, t2; |
093ea232 | 1029 | bool Cflag = false, qflag = false, bflag = false; |
4d731510 | 1030 | bool Pflag = false, zflag = false, cflag = false, sflag = false; |
770e0e0e | 1031 | int flags = 0; |
b32d7a39 | 1032 | int c, cnt, ret; |
797ac58c KW |
1033 | char *buf = NULL; |
1034 | int64_t offset; | |
9b0beaf3 | 1035 | int64_t count; |
797ac58c | 1036 | /* Some compilers get confused and warn if this is not initialized. */ |
9b0beaf3 | 1037 | int64_t total = 0; |
797ac58c | 1038 | int pattern = 0xcd; |
4d731510 | 1039 | const char *file_name = NULL; |
797ac58c | 1040 | |
4d731510 | 1041 | while ((c = getopt(argc, argv, "bcCfnpP:qs:uz")) != -1) { |
797ac58c KW |
1042 | switch (c) { |
1043 | case 'b': | |
dc38852a | 1044 | bflag = true; |
797ac58c KW |
1045 | break; |
1046 | case 'c': | |
dc38852a | 1047 | cflag = true; |
797ac58c KW |
1048 | break; |
1049 | case 'C': | |
dc38852a | 1050 | Cflag = true; |
797ac58c | 1051 | break; |
770e0e0e EB |
1052 | case 'f': |
1053 | flags |= BDRV_REQ_FUA; | |
1054 | break; | |
c6e3f520 KW |
1055 | case 'n': |
1056 | flags |= BDRV_REQ_NO_FALLBACK; | |
1057 | break; | |
797ac58c | 1058 | case 'p': |
093ea232 | 1059 | /* Ignored for backwards compatibility */ |
797ac58c KW |
1060 | break; |
1061 | case 'P': | |
dc38852a | 1062 | Pflag = true; |
797ac58c KW |
1063 | pattern = parse_pattern(optarg); |
1064 | if (pattern < 0) { | |
b32d7a39 | 1065 | return -EINVAL; |
797ac58c KW |
1066 | } |
1067 | break; | |
1068 | case 'q': | |
dc38852a | 1069 | qflag = true; |
797ac58c | 1070 | break; |
4d731510 DP |
1071 | case 's': |
1072 | sflag = true; | |
1073 | file_name = optarg; | |
1074 | break; | |
c2e001cc EB |
1075 | case 'u': |
1076 | flags |= BDRV_REQ_MAY_UNMAP; | |
1077 | break; | |
797ac58c | 1078 | case 'z': |
dc38852a | 1079 | zflag = true; |
797ac58c KW |
1080 | break; |
1081 | default: | |
b444d0e9 | 1082 | qemuio_command_usage(&write_cmd); |
b32d7a39 | 1083 | return -EINVAL; |
797ac58c KW |
1084 | } |
1085 | } | |
1086 | ||
1087 | if (optind != argc - 2) { | |
b444d0e9 | 1088 | qemuio_command_usage(&write_cmd); |
b32d7a39 | 1089 | return -EINVAL; |
797ac58c KW |
1090 | } |
1091 | ||
093ea232 EB |
1092 | if (bflag && zflag) { |
1093 | printf("-b and -z cannot be specified at the same time\n"); | |
b32d7a39 | 1094 | return -EINVAL; |
797ac58c KW |
1095 | } |
1096 | ||
770e0e0e EB |
1097 | if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { |
1098 | printf("-f and -b or -c cannot be specified at the same time\n"); | |
b32d7a39 | 1099 | return -EINVAL; |
770e0e0e EB |
1100 | } |
1101 | ||
c6e3f520 KW |
1102 | if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { |
1103 | printf("-n requires -z to be specified\n"); | |
1104 | return -EINVAL; | |
1105 | } | |
1106 | ||
c2e001cc EB |
1107 | if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { |
1108 | printf("-u requires -z to be specified\n"); | |
b32d7a39 | 1109 | return -EINVAL; |
c2e001cc EB |
1110 | } |
1111 | ||
4d731510 DP |
1112 | if (zflag + Pflag + sflag > 1) { |
1113 | printf("Only one of -z, -P, and -s " | |
1114 | "can be specified at the same time\n"); | |
b32d7a39 | 1115 | return -EINVAL; |
797ac58c KW |
1116 | } |
1117 | ||
1118 | offset = cvtnum(argv[optind]); | |
1119 | if (offset < 0) { | |
a9ecfa00 | 1120 | print_cvtnum_err(offset, argv[optind]); |
b32d7a39 | 1121 | return offset; |
797ac58c KW |
1122 | } |
1123 | ||
1124 | optind++; | |
1125 | count = cvtnum(argv[optind]); | |
1126 | if (count < 0) { | |
a9ecfa00 | 1127 | print_cvtnum_err(count, argv[optind]); |
b32d7a39 | 1128 | return count; |
395aecd0 EB |
1129 | } else if (count > BDRV_REQUEST_MAX_BYTES && |
1130 | !(flags & BDRV_REQ_NO_FALLBACK)) { | |
1131 | printf("length cannot exceed %" PRIu64 " without -n, given %s\n", | |
3026c468 | 1132 | (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); |
b32d7a39 | 1133 | return -EINVAL; |
797ac58c KW |
1134 | } |
1135 | ||
093ea232 | 1136 | if (bflag || cflag) { |
1bce6b4c EB |
1137 | if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { |
1138 | printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", | |
797ac58c | 1139 | offset); |
b32d7a39 | 1140 | return -EINVAL; |
797ac58c KW |
1141 | } |
1142 | ||
1bce6b4c EB |
1143 | if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { |
1144 | printf("%"PRId64" is not a sector-aligned value for 'count'\n", | |
797ac58c | 1145 | count); |
b32d7a39 | 1146 | return -EINVAL; |
797ac58c KW |
1147 | } |
1148 | } | |
1149 | ||
1150 | if (!zflag) { | |
4d731510 DP |
1151 | if (sflag) { |
1152 | buf = qemu_io_alloc_from_file(blk, count, file_name); | |
1153 | if (!buf) { | |
1154 | return -EINVAL; | |
1155 | } | |
1156 | } else { | |
1157 | buf = qemu_io_alloc(blk, count, pattern); | |
1158 | } | |
797ac58c KW |
1159 | } |
1160 | ||
50290c00 | 1161 | clock_gettime(CLOCK_MONOTONIC, &t1); |
7b3f9712 | 1162 | if (bflag) { |
b32d7a39 | 1163 | ret = do_save_vmstate(blk, buf, offset, count, &total); |
797ac58c | 1164 | } else if (zflag) { |
264dcbb2 | 1165 | ret = do_pwrite_zeroes(blk, offset, count, flags, &total); |
797ac58c | 1166 | } else if (cflag) { |
b32d7a39 | 1167 | ret = do_write_compressed(blk, buf, offset, count, &total); |
797ac58c | 1168 | } else { |
b32d7a39 | 1169 | ret = do_pwrite(blk, buf, offset, count, flags, &total); |
797ac58c | 1170 | } |
50290c00 | 1171 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c | 1172 | |
b32d7a39 HR |
1173 | if (ret < 0) { |
1174 | printf("write failed: %s\n", strerror(-ret)); | |
797ac58c KW |
1175 | goto out; |
1176 | } | |
b32d7a39 HR |
1177 | cnt = ret; |
1178 | ||
1179 | ret = 0; | |
797ac58c KW |
1180 | |
1181 | if (qflag) { | |
1182 | goto out; | |
1183 | } | |
1184 | ||
1185 | /* Finally, report back -- -C gives a parsable format */ | |
1186 | t2 = tsub(t2, t1); | |
1187 | print_report("wrote", &t2, offset, count, total, cnt, Cflag); | |
1188 | ||
1189 | out: | |
1190 | if (!zflag) { | |
1191 | qemu_io_free(buf); | |
1192 | } | |
b32d7a39 | 1193 | return ret; |
797ac58c KW |
1194 | } |
1195 | ||
1196 | static void | |
1197 | writev_help(void) | |
1198 | { | |
1199 | printf( | |
1200 | "\n" | |
1201 | " writes a range of bytes from the given offset source from multiple buffers\n" | |
1202 | "\n" | |
1203 | " Example:\n" | |
6e6507c0 | 1204 | " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" |
797ac58c KW |
1205 | "\n" |
1206 | " Writes into a segment of the currently open file, using a buffer\n" | |
1207 | " filled with a set pattern (0xcdcdcdcd).\n" | |
1208 | " -P, -- use different pattern to fill file\n" | |
1209 | " -C, -- report statistics in a machine parsable format\n" | |
770e0e0e | 1210 | " -f, -- use Force Unit Access semantics\n" |
797ac58c KW |
1211 | " -q, -- quiet mode, do not show I/O statistics\n" |
1212 | "\n"); | |
1213 | } | |
1214 | ||
b32d7a39 | 1215 | static int writev_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
1216 | |
1217 | static const cmdinfo_t writev_cmd = { | |
1218 | .name = "writev", | |
1219 | .cfunc = writev_f, | |
887354bd | 1220 | .perm = BLK_PERM_WRITE, |
797ac58c KW |
1221 | .argmin = 2, |
1222 | .argmax = -1, | |
770e0e0e | 1223 | .args = "[-Cfq] [-P pattern] off len [len..]", |
797ac58c KW |
1224 | .oneline = "writes a number of bytes at a specified offset", |
1225 | .help = writev_help, | |
1226 | }; | |
1227 | ||
b32d7a39 | 1228 | static int writev_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1229 | { |
50290c00 | 1230 | struct timespec t1, t2; |
dc38852a | 1231 | bool Cflag = false, qflag = false; |
770e0e0e | 1232 | int flags = 0; |
b32d7a39 | 1233 | int c, cnt, ret; |
797ac58c KW |
1234 | char *buf; |
1235 | int64_t offset; | |
1236 | /* Some compilers get confused and warn if this is not initialized. */ | |
1237 | int total = 0; | |
1238 | int nr_iov; | |
1239 | int pattern = 0xcd; | |
1240 | QEMUIOVector qiov; | |
1241 | ||
4ca1d340 | 1242 | while ((c = getopt(argc, argv, "CfqP:")) != -1) { |
797ac58c KW |
1243 | switch (c) { |
1244 | case 'C': | |
dc38852a | 1245 | Cflag = true; |
797ac58c | 1246 | break; |
770e0e0e EB |
1247 | case 'f': |
1248 | flags |= BDRV_REQ_FUA; | |
1249 | break; | |
797ac58c | 1250 | case 'q': |
dc38852a | 1251 | qflag = true; |
797ac58c KW |
1252 | break; |
1253 | case 'P': | |
1254 | pattern = parse_pattern(optarg); | |
1255 | if (pattern < 0) { | |
b32d7a39 | 1256 | return -EINVAL; |
797ac58c KW |
1257 | } |
1258 | break; | |
1259 | default: | |
b444d0e9 | 1260 | qemuio_command_usage(&writev_cmd); |
b32d7a39 | 1261 | return -EINVAL; |
797ac58c KW |
1262 | } |
1263 | } | |
1264 | ||
1265 | if (optind > argc - 2) { | |
b444d0e9 | 1266 | qemuio_command_usage(&writev_cmd); |
b32d7a39 | 1267 | return -EINVAL; |
797ac58c KW |
1268 | } |
1269 | ||
1270 | offset = cvtnum(argv[optind]); | |
1271 | if (offset < 0) { | |
a9ecfa00 | 1272 | print_cvtnum_err(offset, argv[optind]); |
b32d7a39 | 1273 | return offset; |
797ac58c KW |
1274 | } |
1275 | optind++; | |
1276 | ||
797ac58c | 1277 | nr_iov = argc - optind; |
4c7b7e9b | 1278 | buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); |
797ac58c | 1279 | if (buf == NULL) { |
b32d7a39 | 1280 | return -EINVAL; |
797ac58c KW |
1281 | } |
1282 | ||
50290c00 | 1283 | clock_gettime(CLOCK_MONOTONIC, &t1); |
b32d7a39 | 1284 | ret = do_aio_writev(blk, &qiov, offset, flags, &total); |
50290c00 | 1285 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c | 1286 | |
b32d7a39 HR |
1287 | if (ret < 0) { |
1288 | printf("writev failed: %s\n", strerror(-ret)); | |
797ac58c KW |
1289 | goto out; |
1290 | } | |
b32d7a39 HR |
1291 | cnt = ret; |
1292 | ||
1293 | ret = 0; | |
797ac58c KW |
1294 | |
1295 | if (qflag) { | |
1296 | goto out; | |
1297 | } | |
1298 | ||
1299 | /* Finally, report back -- -C gives a parsable format */ | |
1300 | t2 = tsub(t2, t1); | |
1301 | print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); | |
1302 | out: | |
1303 | qemu_iovec_destroy(&qiov); | |
1304 | qemu_io_free(buf); | |
b32d7a39 | 1305 | return ret; |
797ac58c KW |
1306 | } |
1307 | ||
797ac58c | 1308 | struct aio_ctx { |
4c7b7e9b | 1309 | BlockBackend *blk; |
797ac58c KW |
1310 | QEMUIOVector qiov; |
1311 | int64_t offset; | |
1312 | char *buf; | |
dc38852a EB |
1313 | bool qflag; |
1314 | bool vflag; | |
1315 | bool Cflag; | |
1316 | bool Pflag; | |
1317 | bool zflag; | |
a91f9584 | 1318 | BlockAcctCookie acct; |
797ac58c | 1319 | int pattern; |
50290c00 | 1320 | struct timespec t1; |
797ac58c KW |
1321 | }; |
1322 | ||
1323 | static void aio_write_done(void *opaque, int ret) | |
1324 | { | |
1325 | struct aio_ctx *ctx = opaque; | |
50290c00 | 1326 | struct timespec t2; |
797ac58c | 1327 | |
50290c00 | 1328 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c KW |
1329 | |
1330 | ||
1331 | if (ret < 0) { | |
1332 | printf("aio_write failed: %s\n", strerror(-ret)); | |
556c2b60 | 1333 | block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); |
797ac58c KW |
1334 | goto out; |
1335 | } | |
1336 | ||
4c7b7e9b | 1337 | block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); |
a91f9584 | 1338 | |
797ac58c KW |
1339 | if (ctx->qflag) { |
1340 | goto out; | |
1341 | } | |
1342 | ||
1343 | /* Finally, report back -- -C gives a parsable format */ | |
1344 | t2 = tsub(t2, ctx->t1); | |
1345 | print_report("wrote", &t2, ctx->offset, ctx->qiov.size, | |
1346 | ctx->qiov.size, 1, ctx->Cflag); | |
1347 | out: | |
5ceb7765 KW |
1348 | if (!ctx->zflag) { |
1349 | qemu_io_free(ctx->buf); | |
1350 | qemu_iovec_destroy(&ctx->qiov); | |
1351 | } | |
797ac58c KW |
1352 | g_free(ctx); |
1353 | } | |
1354 | ||
1355 | static void aio_read_done(void *opaque, int ret) | |
1356 | { | |
1357 | struct aio_ctx *ctx = opaque; | |
50290c00 | 1358 | struct timespec t2; |
797ac58c | 1359 | |
50290c00 | 1360 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c KW |
1361 | |
1362 | if (ret < 0) { | |
1363 | printf("readv failed: %s\n", strerror(-ret)); | |
556c2b60 | 1364 | block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); |
797ac58c KW |
1365 | goto out; |
1366 | } | |
1367 | ||
1368 | if (ctx->Pflag) { | |
1369 | void *cmp_buf = g_malloc(ctx->qiov.size); | |
1370 | ||
1371 | memset(cmp_buf, ctx->pattern, ctx->qiov.size); | |
1372 | if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { | |
1373 | printf("Pattern verification failed at offset %" | |
cf67b692 | 1374 | PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); |
797ac58c KW |
1375 | } |
1376 | g_free(cmp_buf); | |
1377 | } | |
1378 | ||
4c7b7e9b | 1379 | block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); |
a91f9584 | 1380 | |
797ac58c KW |
1381 | if (ctx->qflag) { |
1382 | goto out; | |
1383 | } | |
1384 | ||
1385 | if (ctx->vflag) { | |
1386 | dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); | |
1387 | } | |
1388 | ||
1389 | /* Finally, report back -- -C gives a parsable format */ | |
1390 | t2 = tsub(t2, ctx->t1); | |
1391 | print_report("read", &t2, ctx->offset, ctx->qiov.size, | |
1392 | ctx->qiov.size, 1, ctx->Cflag); | |
1393 | out: | |
1394 | qemu_io_free(ctx->buf); | |
1395 | qemu_iovec_destroy(&ctx->qiov); | |
1396 | g_free(ctx); | |
1397 | } | |
1398 | ||
1399 | static void aio_read_help(void) | |
1400 | { | |
1401 | printf( | |
1402 | "\n" | |
1403 | " asynchronously reads a range of bytes from the given offset\n" | |
1404 | "\n" | |
1405 | " Example:\n" | |
1406 | " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" | |
1407 | "\n" | |
1408 | " Reads a segment of the currently open file, optionally dumping it to the\n" | |
1409 | " standard output stream (with -v option) for subsequent inspection.\n" | |
1410 | " The read is performed asynchronously and the aio_flush command must be\n" | |
1411 | " used to ensure all outstanding aio requests have been completed.\n" | |
b32d7a39 HR |
1412 | " Note that due to its asynchronous nature, this command will be\n" |
1413 | " considered successful once the request is submitted, independently\n" | |
1414 | " of potential I/O errors or pattern mismatches.\n" | |
797ac58c KW |
1415 | " -C, -- report statistics in a machine parsable format\n" |
1416 | " -P, -- use a pattern to verify read data\n" | |
37546ff2 | 1417 | " -i, -- treat request as invalid, for exercising stats\n" |
797ac58c KW |
1418 | " -v, -- dump buffer to standard output\n" |
1419 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1420 | "\n"); | |
1421 | } | |
1422 | ||
b32d7a39 | 1423 | static int aio_read_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
1424 | |
1425 | static const cmdinfo_t aio_read_cmd = { | |
1426 | .name = "aio_read", | |
1427 | .cfunc = aio_read_f, | |
1428 | .argmin = 2, | |
1429 | .argmax = -1, | |
37546ff2 | 1430 | .args = "[-Ciqv] [-P pattern] off len [len..]", |
797ac58c KW |
1431 | .oneline = "asynchronously reads a number of bytes", |
1432 | .help = aio_read_help, | |
1433 | }; | |
1434 | ||
b32d7a39 | 1435 | static int aio_read_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
1436 | { |
1437 | int nr_iov, c; | |
1438 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
1439 | ||
4c7b7e9b | 1440 | ctx->blk = blk; |
37546ff2 | 1441 | while ((c = getopt(argc, argv, "CP:iqv")) != -1) { |
797ac58c KW |
1442 | switch (c) { |
1443 | case 'C': | |
dc38852a | 1444 | ctx->Cflag = true; |
797ac58c KW |
1445 | break; |
1446 | case 'P': | |
dc38852a | 1447 | ctx->Pflag = true; |
797ac58c KW |
1448 | ctx->pattern = parse_pattern(optarg); |
1449 | if (ctx->pattern < 0) { | |
1450 | g_free(ctx); | |
b32d7a39 | 1451 | return -EINVAL; |
797ac58c KW |
1452 | } |
1453 | break; | |
37546ff2 EB |
1454 | case 'i': |
1455 | printf("injecting invalid read request\n"); | |
1456 | block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); | |
1457 | g_free(ctx); | |
b32d7a39 | 1458 | return 0; |
797ac58c | 1459 | case 'q': |
dc38852a | 1460 | ctx->qflag = true; |
797ac58c KW |
1461 | break; |
1462 | case 'v': | |
dc38852a | 1463 | ctx->vflag = true; |
797ac58c KW |
1464 | break; |
1465 | default: | |
1466 | g_free(ctx); | |
b444d0e9 | 1467 | qemuio_command_usage(&aio_read_cmd); |
b32d7a39 | 1468 | return -EINVAL; |
797ac58c KW |
1469 | } |
1470 | } | |
1471 | ||
1472 | if (optind > argc - 2) { | |
1473 | g_free(ctx); | |
b444d0e9 | 1474 | qemuio_command_usage(&aio_read_cmd); |
b32d7a39 | 1475 | return -EINVAL; |
797ac58c KW |
1476 | } |
1477 | ||
1478 | ctx->offset = cvtnum(argv[optind]); | |
1479 | if (ctx->offset < 0) { | |
b32d7a39 HR |
1480 | int ret = ctx->offset; |
1481 | print_cvtnum_err(ret, argv[optind]); | |
797ac58c | 1482 | g_free(ctx); |
b32d7a39 | 1483 | return ret; |
797ac58c KW |
1484 | } |
1485 | optind++; | |
1486 | ||
797ac58c | 1487 | nr_iov = argc - optind; |
4c7b7e9b | 1488 | ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); |
797ac58c | 1489 | if (ctx->buf == NULL) { |
556c2b60 | 1490 | block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); |
797ac58c | 1491 | g_free(ctx); |
b32d7a39 | 1492 | return -EINVAL; |
797ac58c KW |
1493 | } |
1494 | ||
50290c00 | 1495 | clock_gettime(CLOCK_MONOTONIC, &ctx->t1); |
4c7b7e9b HR |
1496 | block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, |
1497 | BLOCK_ACCT_READ); | |
7b3f9712 | 1498 | blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); |
b32d7a39 | 1499 | return 0; |
797ac58c KW |
1500 | } |
1501 | ||
1502 | static void aio_write_help(void) | |
1503 | { | |
1504 | printf( | |
1505 | "\n" | |
1506 | " asynchronously writes a range of bytes from the given offset source\n" | |
1507 | " from multiple buffers\n" | |
1508 | "\n" | |
1509 | " Example:\n" | |
1510 | " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" | |
1511 | "\n" | |
1512 | " Writes into a segment of the currently open file, using a buffer\n" | |
1513 | " filled with a set pattern (0xcdcdcdcd).\n" | |
1514 | " The write is performed asynchronously and the aio_flush command must be\n" | |
1515 | " used to ensure all outstanding aio requests have been completed.\n" | |
b32d7a39 HR |
1516 | " Note that due to its asynchronous nature, this command will be\n" |
1517 | " considered successful once the request is submitted, independently\n" | |
1518 | " of potential I/O errors or pattern mismatches.\n" | |
797ac58c KW |
1519 | " -P, -- use different pattern to fill file\n" |
1520 | " -C, -- report statistics in a machine parsable format\n" | |
770e0e0e | 1521 | " -f, -- use Force Unit Access semantics\n" |
37546ff2 | 1522 | " -i, -- treat request as invalid, for exercising stats\n" |
797ac58c | 1523 | " -q, -- quiet mode, do not show I/O statistics\n" |
c2e001cc | 1524 | " -u, -- with -z, allow unmapping\n" |
d004bd52 | 1525 | " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" |
797ac58c KW |
1526 | "\n"); |
1527 | } | |
1528 | ||
b32d7a39 | 1529 | static int aio_write_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
1530 | |
1531 | static const cmdinfo_t aio_write_cmd = { | |
1532 | .name = "aio_write", | |
1533 | .cfunc = aio_write_f, | |
887354bd | 1534 | .perm = BLK_PERM_WRITE, |
797ac58c KW |
1535 | .argmin = 2, |
1536 | .argmax = -1, | |
37546ff2 | 1537 | .args = "[-Cfiquz] [-P pattern] off len [len..]", |
797ac58c KW |
1538 | .oneline = "asynchronously writes a number of bytes", |
1539 | .help = aio_write_help, | |
1540 | }; | |
1541 | ||
b32d7a39 | 1542 | static int aio_write_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
1543 | { |
1544 | int nr_iov, c; | |
1545 | int pattern = 0xcd; | |
1546 | struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); | |
770e0e0e | 1547 | int flags = 0; |
797ac58c | 1548 | |
4c7b7e9b | 1549 | ctx->blk = blk; |
37546ff2 | 1550 | while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { |
797ac58c KW |
1551 | switch (c) { |
1552 | case 'C': | |
dc38852a | 1553 | ctx->Cflag = true; |
797ac58c | 1554 | break; |
770e0e0e EB |
1555 | case 'f': |
1556 | flags |= BDRV_REQ_FUA; | |
1557 | break; | |
797ac58c | 1558 | case 'q': |
dc38852a | 1559 | ctx->qflag = true; |
797ac58c | 1560 | break; |
c2e001cc EB |
1561 | case 'u': |
1562 | flags |= BDRV_REQ_MAY_UNMAP; | |
1563 | break; | |
797ac58c KW |
1564 | case 'P': |
1565 | pattern = parse_pattern(optarg); | |
1566 | if (pattern < 0) { | |
1567 | g_free(ctx); | |
b32d7a39 | 1568 | return -EINVAL; |
797ac58c KW |
1569 | } |
1570 | break; | |
37546ff2 EB |
1571 | case 'i': |
1572 | printf("injecting invalid write request\n"); | |
1573 | block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); | |
1574 | g_free(ctx); | |
b32d7a39 | 1575 | return 0; |
5ceb7765 | 1576 | case 'z': |
dc38852a | 1577 | ctx->zflag = true; |
5ceb7765 | 1578 | break; |
797ac58c KW |
1579 | default: |
1580 | g_free(ctx); | |
b444d0e9 | 1581 | qemuio_command_usage(&aio_write_cmd); |
b32d7a39 | 1582 | return -EINVAL; |
797ac58c KW |
1583 | } |
1584 | } | |
1585 | ||
1586 | if (optind > argc - 2) { | |
1587 | g_free(ctx); | |
b444d0e9 | 1588 | qemuio_command_usage(&aio_write_cmd); |
b32d7a39 | 1589 | return -EINVAL; |
797ac58c KW |
1590 | } |
1591 | ||
5ceb7765 KW |
1592 | if (ctx->zflag && optind != argc - 2) { |
1593 | printf("-z supports only a single length parameter\n"); | |
1594 | g_free(ctx); | |
b32d7a39 | 1595 | return -EINVAL; |
5ceb7765 KW |
1596 | } |
1597 | ||
c2e001cc EB |
1598 | if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { |
1599 | printf("-u requires -z to be specified\n"); | |
4ca1d340 | 1600 | g_free(ctx); |
b32d7a39 | 1601 | return -EINVAL; |
c2e001cc EB |
1602 | } |
1603 | ||
5ceb7765 KW |
1604 | if (ctx->zflag && ctx->Pflag) { |
1605 | printf("-z and -P cannot be specified at the same time\n"); | |
1606 | g_free(ctx); | |
b32d7a39 | 1607 | return -EINVAL; |
5ceb7765 KW |
1608 | } |
1609 | ||
797ac58c KW |
1610 | ctx->offset = cvtnum(argv[optind]); |
1611 | if (ctx->offset < 0) { | |
b32d7a39 HR |
1612 | int ret = ctx->offset; |
1613 | print_cvtnum_err(ret, argv[optind]); | |
797ac58c | 1614 | g_free(ctx); |
b32d7a39 | 1615 | return ret; |
797ac58c KW |
1616 | } |
1617 | optind++; | |
1618 | ||
5ceb7765 KW |
1619 | if (ctx->zflag) { |
1620 | int64_t count = cvtnum(argv[optind]); | |
1621 | if (count < 0) { | |
1622 | print_cvtnum_err(count, argv[optind]); | |
0e01b76e | 1623 | g_free(ctx); |
b32d7a39 | 1624 | return count; |
5ceb7765 | 1625 | } |
797ac58c | 1626 | |
5ceb7765 | 1627 | ctx->qiov.size = count; |
d004bd52 EB |
1628 | blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, |
1629 | ctx); | |
5ceb7765 KW |
1630 | } else { |
1631 | nr_iov = argc - optind; | |
1632 | ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, | |
1633 | pattern); | |
1634 | if (ctx->buf == NULL) { | |
1635 | block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); | |
1636 | g_free(ctx); | |
b32d7a39 | 1637 | return -EINVAL; |
5ceb7765 KW |
1638 | } |
1639 | ||
50290c00 | 1640 | clock_gettime(CLOCK_MONOTONIC, &ctx->t1); |
5ceb7765 KW |
1641 | block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, |
1642 | BLOCK_ACCT_WRITE); | |
1643 | ||
770e0e0e EB |
1644 | blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, |
1645 | ctx); | |
5ceb7765 | 1646 | } |
b32d7a39 HR |
1647 | |
1648 | return 0; | |
797ac58c KW |
1649 | } |
1650 | ||
b32d7a39 | 1651 | static int aio_flush_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1652 | { |
556c2b60 AG |
1653 | BlockAcctCookie cookie; |
1654 | block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); | |
4c7b7e9b | 1655 | blk_drain_all(); |
556c2b60 | 1656 | block_acct_done(blk_get_stats(blk), &cookie); |
b32d7a39 | 1657 | return 0; |
797ac58c KW |
1658 | } |
1659 | ||
1660 | static const cmdinfo_t aio_flush_cmd = { | |
1661 | .name = "aio_flush", | |
1662 | .cfunc = aio_flush_f, | |
1663 | .oneline = "completes all outstanding aio requests" | |
1664 | }; | |
1665 | ||
b32d7a39 | 1666 | static int flush_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1667 | { |
b32d7a39 | 1668 | return blk_flush(blk); |
797ac58c KW |
1669 | } |
1670 | ||
1671 | static const cmdinfo_t flush_cmd = { | |
1672 | .name = "flush", | |
1673 | .altname = "f", | |
1674 | .cfunc = flush_f, | |
1675 | .oneline = "flush all in-core file state to disk", | |
1676 | }; | |
1677 | ||
42ba0225 VSO |
1678 | static int truncate_f(BlockBackend *blk, int argc, char **argv); |
1679 | static const cmdinfo_t truncate_cmd = { | |
1680 | .name = "truncate", | |
1681 | .altname = "t", | |
1682 | .cfunc = truncate_f, | |
1683 | .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, | |
1684 | .argmin = 1, | |
1685 | .argmax = 3, | |
1686 | .args = "[-m prealloc_mode] off", | |
1687 | .oneline = "truncates the current file at the given offset", | |
1688 | }; | |
1689 | ||
b32d7a39 | 1690 | static int truncate_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1691 | { |
ed3d2ec9 | 1692 | Error *local_err = NULL; |
797ac58c | 1693 | int64_t offset; |
42ba0225 VSO |
1694 | int c, ret; |
1695 | PreallocMode prealloc = PREALLOC_MODE_OFF; | |
797ac58c | 1696 | |
42ba0225 VSO |
1697 | while ((c = getopt(argc, argv, "m:")) != -1) { |
1698 | switch (c) { | |
1699 | case 'm': | |
1700 | prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, | |
1701 | PREALLOC_MODE__MAX, NULL); | |
1702 | if (prealloc == PREALLOC_MODE__MAX) { | |
1703 | error_report("Invalid preallocation mode '%s'", optarg); | |
1704 | return -EINVAL; | |
1705 | } | |
1706 | break; | |
1707 | default: | |
1708 | qemuio_command_usage(&truncate_cmd); | |
1709 | return -EINVAL; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | offset = cvtnum(argv[optind]); | |
797ac58c | 1714 | if (offset < 0) { |
a9ecfa00 | 1715 | print_cvtnum_err(offset, argv[1]); |
b32d7a39 | 1716 | return offset; |
797ac58c KW |
1717 | } |
1718 | ||
e8d04f92 HR |
1719 | /* |
1720 | * qemu-io is a debugging tool, so let us be strict here and pass | |
1721 | * exact=true. It is better to err on the "emit more errors" side | |
1722 | * than to be overly permissive. | |
1723 | */ | |
42ba0225 | 1724 | ret = blk_truncate(blk, offset, false, prealloc, 0, &local_err); |
797ac58c | 1725 | if (ret < 0) { |
ed3d2ec9 | 1726 | error_report_err(local_err); |
b32d7a39 | 1727 | return ret; |
797ac58c | 1728 | } |
b32d7a39 HR |
1729 | |
1730 | return 0; | |
797ac58c KW |
1731 | } |
1732 | ||
b32d7a39 | 1733 | static int length_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
1734 | { |
1735 | int64_t size; | |
1736 | char s1[64]; | |
1737 | ||
4c7b7e9b | 1738 | size = blk_getlength(blk); |
797ac58c KW |
1739 | if (size < 0) { |
1740 | printf("getlength: %s\n", strerror(-size)); | |
b32d7a39 | 1741 | return size; |
797ac58c KW |
1742 | } |
1743 | ||
1744 | cvtstr(size, s1, sizeof(s1)); | |
1745 | printf("%s\n", s1); | |
b32d7a39 | 1746 | return 0; |
797ac58c KW |
1747 | } |
1748 | ||
1749 | ||
1750 | static const cmdinfo_t length_cmd = { | |
1751 | .name = "length", | |
1752 | .altname = "l", | |
1753 | .cfunc = length_f, | |
1754 | .oneline = "gets the length of the current file", | |
1755 | }; | |
1756 | ||
1757 | ||
b32d7a39 | 1758 | static int info_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1759 | { |
4c7b7e9b | 1760 | BlockDriverState *bs = blk_bs(blk); |
797ac58c | 1761 | BlockDriverInfo bdi; |
a8d8ecb7 | 1762 | ImageInfoSpecific *spec_info; |
1bf6e9ca | 1763 | Error *local_err = NULL; |
797ac58c KW |
1764 | char s1[64], s2[64]; |
1765 | int ret; | |
1766 | ||
1767 | if (bs->drv && bs->drv->format_name) { | |
1768 | printf("format name: %s\n", bs->drv->format_name); | |
1769 | } | |
1770 | if (bs->drv && bs->drv->protocol_name) { | |
1771 | printf("format name: %s\n", bs->drv->protocol_name); | |
1772 | } | |
1773 | ||
1774 | ret = bdrv_get_info(bs, &bdi); | |
1775 | if (ret) { | |
b32d7a39 | 1776 | return ret; |
797ac58c KW |
1777 | } |
1778 | ||
1779 | cvtstr(bdi.cluster_size, s1, sizeof(s1)); | |
1780 | cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); | |
1781 | ||
1782 | printf("cluster size: %s\n", s1); | |
1783 | printf("vm state offset: %s\n", s2); | |
1784 | ||
1bf6e9ca AS |
1785 | spec_info = bdrv_get_specific_info(bs, &local_err); |
1786 | if (local_err) { | |
1787 | error_report_err(local_err); | |
1788 | return -EIO; | |
1789 | } | |
a8d8ecb7 | 1790 | if (spec_info) { |
3716470b | 1791 | bdrv_image_info_specific_dump(spec_info, |
76c9e975 HR |
1792 | "Format specific information:\n", |
1793 | 0); | |
a8d8ecb7 HR |
1794 | qapi_free_ImageInfoSpecific(spec_info); |
1795 | } | |
b32d7a39 HR |
1796 | |
1797 | return 0; | |
797ac58c KW |
1798 | } |
1799 | ||
1800 | ||
1801 | ||
1802 | static const cmdinfo_t info_cmd = { | |
1803 | .name = "info", | |
1804 | .altname = "i", | |
1805 | .cfunc = info_f, | |
1806 | .oneline = "prints information about the current file", | |
1807 | }; | |
1808 | ||
1809 | static void discard_help(void) | |
1810 | { | |
1811 | printf( | |
1812 | "\n" | |
1813 | " discards a range of bytes from the given offset\n" | |
1814 | "\n" | |
1815 | " Example:\n" | |
1816 | " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" | |
1817 | "\n" | |
1818 | " Discards a segment of the currently open file.\n" | |
1819 | " -C, -- report statistics in a machine parsable format\n" | |
1820 | " -q, -- quiet mode, do not show I/O statistics\n" | |
1821 | "\n"); | |
1822 | } | |
1823 | ||
b32d7a39 | 1824 | static int discard_f(BlockBackend *blk, int argc, char **argv); |
797ac58c KW |
1825 | |
1826 | static const cmdinfo_t discard_cmd = { | |
1827 | .name = "discard", | |
1828 | .altname = "d", | |
1829 | .cfunc = discard_f, | |
887354bd | 1830 | .perm = BLK_PERM_WRITE, |
797ac58c KW |
1831 | .argmin = 2, |
1832 | .argmax = -1, | |
1833 | .args = "[-Cq] off len", | |
1834 | .oneline = "discards a number of bytes at a specified offset", | |
1835 | .help = discard_help, | |
1836 | }; | |
1837 | ||
b32d7a39 | 1838 | static int discard_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1839 | { |
50290c00 | 1840 | struct timespec t1, t2; |
dc38852a | 1841 | bool Cflag = false, qflag = false; |
797ac58c | 1842 | int c, ret; |
f5a5ca79 | 1843 | int64_t offset, bytes; |
797ac58c | 1844 | |
b062ad86 | 1845 | while ((c = getopt(argc, argv, "Cq")) != -1) { |
797ac58c KW |
1846 | switch (c) { |
1847 | case 'C': | |
dc38852a | 1848 | Cflag = true; |
797ac58c KW |
1849 | break; |
1850 | case 'q': | |
dc38852a | 1851 | qflag = true; |
797ac58c KW |
1852 | break; |
1853 | default: | |
b444d0e9 | 1854 | qemuio_command_usage(&discard_cmd); |
b32d7a39 | 1855 | return -EINVAL; |
797ac58c KW |
1856 | } |
1857 | } | |
1858 | ||
1859 | if (optind != argc - 2) { | |
b444d0e9 | 1860 | qemuio_command_usage(&discard_cmd); |
b32d7a39 | 1861 | return -EINVAL; |
797ac58c KW |
1862 | } |
1863 | ||
1864 | offset = cvtnum(argv[optind]); | |
1865 | if (offset < 0) { | |
a9ecfa00 | 1866 | print_cvtnum_err(offset, argv[optind]); |
b32d7a39 | 1867 | return offset; |
797ac58c KW |
1868 | } |
1869 | ||
1870 | optind++; | |
f5a5ca79 MP |
1871 | bytes = cvtnum(argv[optind]); |
1872 | if (bytes < 0) { | |
1873 | print_cvtnum_err(bytes, argv[optind]); | |
b32d7a39 | 1874 | return bytes; |
41ae31e3 | 1875 | } else if (bytes > BDRV_REQUEST_MAX_BYTES) { |
9b0beaf3 | 1876 | printf("length cannot exceed %"PRIu64", given %s\n", |
41ae31e3 | 1877 | (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); |
b32d7a39 | 1878 | return -EINVAL; |
797ac58c KW |
1879 | } |
1880 | ||
50290c00 | 1881 | clock_gettime(CLOCK_MONOTONIC, &t1); |
f5a5ca79 | 1882 | ret = blk_pdiscard(blk, offset, bytes); |
50290c00 | 1883 | clock_gettime(CLOCK_MONOTONIC, &t2); |
797ac58c KW |
1884 | |
1885 | if (ret < 0) { | |
1886 | printf("discard failed: %s\n", strerror(-ret)); | |
b32d7a39 | 1887 | return ret; |
797ac58c KW |
1888 | } |
1889 | ||
1890 | /* Finally, report back -- -C gives a parsable format */ | |
1891 | if (!qflag) { | |
1892 | t2 = tsub(t2, t1); | |
f5a5ca79 | 1893 | print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); |
797ac58c | 1894 | } |
b32d7a39 HR |
1895 | |
1896 | return 0; | |
797ac58c KW |
1897 | } |
1898 | ||
b32d7a39 | 1899 | static int alloc_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1900 | { |
4c7b7e9b | 1901 | BlockDriverState *bs = blk_bs(blk); |
d6a644bb | 1902 | int64_t offset, start, remaining, count; |
797ac58c | 1903 | char s1[64]; |
d6a644bb EB |
1904 | int ret; |
1905 | int64_t num, sum_alloc; | |
797ac58c | 1906 | |
d6a644bb | 1907 | start = offset = cvtnum(argv[1]); |
797ac58c | 1908 | if (offset < 0) { |
a9ecfa00 | 1909 | print_cvtnum_err(offset, argv[1]); |
b32d7a39 | 1910 | return offset; |
797ac58c KW |
1911 | } |
1912 | ||
1913 | if (argc == 3) { | |
4401fdc7 EB |
1914 | count = cvtnum(argv[2]); |
1915 | if (count < 0) { | |
1916 | print_cvtnum_err(count, argv[2]); | |
b32d7a39 | 1917 | return count; |
797ac58c KW |
1918 | } |
1919 | } else { | |
4401fdc7 EB |
1920 | count = BDRV_SECTOR_SIZE; |
1921 | } | |
797ac58c | 1922 | |
d6a644bb | 1923 | remaining = count; |
797ac58c | 1924 | sum_alloc = 0; |
797ac58c | 1925 | while (remaining) { |
d6a644bb | 1926 | ret = bdrv_is_allocated(bs, offset, remaining, &num); |
d663640c PB |
1927 | if (ret < 0) { |
1928 | printf("is_allocated failed: %s\n", strerror(-ret)); | |
b32d7a39 | 1929 | return ret; |
d663640c | 1930 | } |
d6a644bb | 1931 | offset += num; |
797ac58c KW |
1932 | remaining -= num; |
1933 | if (ret) { | |
1934 | sum_alloc += num; | |
1935 | } | |
1936 | if (num == 0) { | |
d6a644bb | 1937 | count -= remaining; |
797ac58c KW |
1938 | remaining = 0; |
1939 | } | |
1940 | } | |
1941 | ||
d6a644bb | 1942 | cvtstr(start, s1, sizeof(s1)); |
797ac58c | 1943 | |
4401fdc7 | 1944 | printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", |
d6a644bb | 1945 | sum_alloc, count, s1); |
b32d7a39 | 1946 | return 0; |
797ac58c KW |
1947 | } |
1948 | ||
1949 | static const cmdinfo_t alloc_cmd = { | |
1950 | .name = "alloc", | |
1951 | .altname = "a", | |
1952 | .argmin = 1, | |
1953 | .argmax = 2, | |
1954 | .cfunc = alloc_f, | |
4401fdc7 EB |
1955 | .args = "offset [count]", |
1956 | .oneline = "checks if offset is allocated in the file", | |
797ac58c KW |
1957 | }; |
1958 | ||
1959 | ||
d6a644bb EB |
1960 | static int map_is_allocated(BlockDriverState *bs, int64_t offset, |
1961 | int64_t bytes, int64_t *pnum) | |
797ac58c | 1962 | { |
d6a644bb | 1963 | int64_t num; |
797ac58c KW |
1964 | int ret, firstret; |
1965 | ||
087f2fb3 | 1966 | ret = bdrv_is_allocated(bs, offset, bytes, &num); |
797ac58c KW |
1967 | if (ret < 0) { |
1968 | return ret; | |
1969 | } | |
1970 | ||
1971 | firstret = ret; | |
1972 | *pnum = num; | |
1973 | ||
d6a644bb EB |
1974 | while (bytes > 0 && ret == firstret) { |
1975 | offset += num; | |
1976 | bytes -= num; | |
797ac58c | 1977 | |
087f2fb3 | 1978 | ret = bdrv_is_allocated(bs, offset, bytes, &num); |
4b25bbc4 | 1979 | if (ret == firstret && num) { |
797ac58c KW |
1980 | *pnum += num; |
1981 | } else { | |
1982 | break; | |
1983 | } | |
1984 | } | |
1985 | ||
1986 | return firstret; | |
1987 | } | |
1988 | ||
b32d7a39 | 1989 | static int map_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 1990 | { |
d6a644bb | 1991 | int64_t offset, bytes; |
6f3c90af | 1992 | char s1[64], s2[64]; |
797ac58c KW |
1993 | int64_t num; |
1994 | int ret; | |
1995 | const char *retstr; | |
1996 | ||
1997 | offset = 0; | |
d6a644bb EB |
1998 | bytes = blk_getlength(blk); |
1999 | if (bytes < 0) { | |
2000 | error_report("Failed to query image length: %s", strerror(-bytes)); | |
b32d7a39 | 2001 | return bytes; |
4c7b7e9b HR |
2002 | } |
2003 | ||
d6a644bb EB |
2004 | while (bytes) { |
2005 | ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); | |
797ac58c KW |
2006 | if (ret < 0) { |
2007 | error_report("Failed to get allocation status: %s", strerror(-ret)); | |
b32d7a39 | 2008 | return ret; |
4b25bbc4 HR |
2009 | } else if (!num) { |
2010 | error_report("Unexpected end of image"); | |
b32d7a39 | 2011 | return -EIO; |
797ac58c KW |
2012 | } |
2013 | ||
2014 | retstr = ret ? " allocated" : "not allocated"; | |
d6a644bb EB |
2015 | cvtstr(num, s1, sizeof(s1)); |
2016 | cvtstr(offset, s2, sizeof(s2)); | |
6f3c90af | 2017 | printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", |
d6a644bb | 2018 | s1, num, retstr, s2, offset); |
797ac58c KW |
2019 | |
2020 | offset += num; | |
d6a644bb EB |
2021 | bytes -= num; |
2022 | } | |
b32d7a39 HR |
2023 | |
2024 | return 0; | |
797ac58c KW |
2025 | } |
2026 | ||
2027 | static const cmdinfo_t map_cmd = { | |
2028 | .name = "map", | |
2029 | .argmin = 0, | |
2030 | .argmax = 0, | |
2031 | .cfunc = map_f, | |
2032 | .args = "", | |
2033 | .oneline = "prints the allocated areas of a file", | |
2034 | }; | |
2035 | ||
5bbd2e59 KW |
2036 | static void reopen_help(void) |
2037 | { | |
2038 | printf( | |
2039 | "\n" | |
2040 | " Changes the open options of an already opened image\n" | |
2041 | "\n" | |
2042 | " Example:\n" | |
2043 | " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" | |
2044 | "\n" | |
2045 | " -r, -- Reopen the image read-only\n" | |
ea92203c | 2046 | " -w, -- Reopen the image read-write\n" |
5bbd2e59 KW |
2047 | " -c, -- Change the cache mode to the given value\n" |
2048 | " -o, -- Changes block driver options (cf. 'open' command)\n" | |
2049 | "\n"); | |
2050 | } | |
2051 | ||
b32d7a39 | 2052 | static int reopen_f(BlockBackend *blk, int argc, char **argv); |
5bbd2e59 KW |
2053 | |
2054 | static QemuOptsList reopen_opts = { | |
2055 | .name = "reopen", | |
2056 | .merge_lists = true, | |
2057 | .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), | |
2058 | .desc = { | |
2059 | /* no elements => accept any params */ | |
2060 | { /* end of list */ } | |
2061 | }, | |
2062 | }; | |
2063 | ||
2064 | static const cmdinfo_t reopen_cmd = { | |
2065 | .name = "reopen", | |
2066 | .argmin = 0, | |
2067 | .argmax = -1, | |
2068 | .cfunc = reopen_f, | |
ea92203c | 2069 | .args = "[(-r|-w)] [-c cache] [-o options]", |
5bbd2e59 KW |
2070 | .oneline = "reopens an image with new options", |
2071 | .help = reopen_help, | |
2072 | }; | |
2073 | ||
b32d7a39 | 2074 | static int reopen_f(BlockBackend *blk, int argc, char **argv) |
5bbd2e59 KW |
2075 | { |
2076 | BlockDriverState *bs = blk_bs(blk); | |
2077 | QemuOpts *qopts; | |
2078 | QDict *opts; | |
2079 | int c; | |
2080 | int flags = bs->open_flags; | |
19dbecdc | 2081 | bool writethrough = !blk_enable_write_cache(blk); |
ea92203c | 2082 | bool has_rw_option = false; |
dc900c35 | 2083 | bool has_cache_option = false; |
5bbd2e59 KW |
2084 | Error *local_err = NULL; |
2085 | ||
ea92203c | 2086 | while ((c = getopt(argc, argv, "c:o:rw")) != -1) { |
5bbd2e59 KW |
2087 | switch (c) { |
2088 | case 'c': | |
19dbecdc | 2089 | if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { |
5bbd2e59 | 2090 | error_report("Invalid cache option: %s", optarg); |
b32d7a39 | 2091 | return -EINVAL; |
5bbd2e59 | 2092 | } |
dc900c35 | 2093 | has_cache_option = true; |
5bbd2e59 KW |
2094 | break; |
2095 | case 'o': | |
2096 | if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { | |
2097 | qemu_opts_reset(&reopen_opts); | |
b32d7a39 | 2098 | return -EINVAL; |
5bbd2e59 KW |
2099 | } |
2100 | break; | |
2101 | case 'r': | |
ea92203c KW |
2102 | if (has_rw_option) { |
2103 | error_report("Only one -r/-w option may be given"); | |
b32d7a39 | 2104 | return -EINVAL; |
ea92203c | 2105 | } |
5bbd2e59 | 2106 | flags &= ~BDRV_O_RDWR; |
ea92203c KW |
2107 | has_rw_option = true; |
2108 | break; | |
2109 | case 'w': | |
2110 | if (has_rw_option) { | |
2111 | error_report("Only one -r/-w option may be given"); | |
b32d7a39 | 2112 | return -EINVAL; |
ea92203c KW |
2113 | } |
2114 | flags |= BDRV_O_RDWR; | |
2115 | has_rw_option = true; | |
5bbd2e59 KW |
2116 | break; |
2117 | default: | |
2118 | qemu_opts_reset(&reopen_opts); | |
b444d0e9 | 2119 | qemuio_command_usage(&reopen_cmd); |
b32d7a39 | 2120 | return -EINVAL; |
5bbd2e59 KW |
2121 | } |
2122 | } | |
2123 | ||
2124 | if (optind != argc) { | |
2125 | qemu_opts_reset(&reopen_opts); | |
b444d0e9 | 2126 | qemuio_command_usage(&reopen_cmd); |
b32d7a39 | 2127 | return -EINVAL; |
5bbd2e59 KW |
2128 | } |
2129 | ||
a8003ec4 | 2130 | if (!writethrough != blk_enable_write_cache(blk) && |
19dbecdc KW |
2131 | blk_get_attached_dev(blk)) |
2132 | { | |
2133 | error_report("Cannot change cache.writeback: Device attached"); | |
2134 | qemu_opts_reset(&reopen_opts); | |
b32d7a39 | 2135 | return -EBUSY; |
19dbecdc KW |
2136 | } |
2137 | ||
f3adefb2 KW |
2138 | if (!(flags & BDRV_O_RDWR)) { |
2139 | uint64_t orig_perm, orig_shared_perm; | |
2140 | ||
2141 | bdrv_drain(bs); | |
2142 | ||
2143 | blk_get_perm(blk, &orig_perm, &orig_shared_perm); | |
2144 | blk_set_perm(blk, | |
2145 | orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), | |
2146 | orig_shared_perm, | |
2147 | &error_abort); | |
2148 | } | |
2149 | ||
5bbd2e59 | 2150 | qopts = qemu_opts_find(&reopen_opts, NULL); |
dc900c35 | 2151 | opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); |
5bbd2e59 KW |
2152 | qemu_opts_reset(&reopen_opts); |
2153 | ||
dc900c35 AG |
2154 | if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { |
2155 | if (has_rw_option) { | |
2156 | error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); | |
2157 | qobject_unref(opts); | |
2158 | return -EINVAL; | |
2159 | } | |
2160 | } else { | |
2161 | qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); | |
2162 | } | |
2163 | ||
2164 | if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || | |
2165 | qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { | |
2166 | if (has_cache_option) { | |
2167 | error_report("Cannot set both -c and the cache options"); | |
2168 | qobject_unref(opts); | |
2169 | return -EINVAL; | |
2170 | } | |
2171 | } else { | |
2172 | qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); | |
2173 | qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); | |
2174 | } | |
2175 | ||
6cf42ca2 | 2176 | bdrv_reopen(bs, opts, true, &local_err); |
1a63a907 | 2177 | |
5bbd2e59 KW |
2178 | if (local_err) { |
2179 | error_report_err(local_err); | |
b32d7a39 | 2180 | return -EINVAL; |
5bbd2e59 | 2181 | } |
b32d7a39 HR |
2182 | |
2183 | blk_set_enable_write_cache(blk, !writethrough); | |
2184 | return 0; | |
5bbd2e59 KW |
2185 | } |
2186 | ||
b32d7a39 | 2187 | static int break_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
2188 | { |
2189 | int ret; | |
2190 | ||
4c7b7e9b | 2191 | ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); |
797ac58c KW |
2192 | if (ret < 0) { |
2193 | printf("Could not set breakpoint: %s\n", strerror(-ret)); | |
b32d7a39 | 2194 | return ret; |
797ac58c | 2195 | } |
b32d7a39 HR |
2196 | |
2197 | return 0; | |
797ac58c KW |
2198 | } |
2199 | ||
b32d7a39 | 2200 | static int remove_break_f(BlockBackend *blk, int argc, char **argv) |
4cc70e93 FZ |
2201 | { |
2202 | int ret; | |
2203 | ||
4c7b7e9b | 2204 | ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); |
4cc70e93 FZ |
2205 | if (ret < 0) { |
2206 | printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); | |
b32d7a39 | 2207 | return ret; |
4cc70e93 | 2208 | } |
b32d7a39 HR |
2209 | |
2210 | return 0; | |
4cc70e93 FZ |
2211 | } |
2212 | ||
797ac58c KW |
2213 | static const cmdinfo_t break_cmd = { |
2214 | .name = "break", | |
2215 | .argmin = 2, | |
2216 | .argmax = 2, | |
2217 | .cfunc = break_f, | |
2218 | .args = "event tag", | |
2219 | .oneline = "sets a breakpoint on event and tags the stopped " | |
2220 | "request as tag", | |
2221 | }; | |
2222 | ||
4cc70e93 FZ |
2223 | static const cmdinfo_t remove_break_cmd = { |
2224 | .name = "remove_break", | |
2225 | .argmin = 1, | |
2226 | .argmax = 1, | |
2227 | .cfunc = remove_break_f, | |
2228 | .args = "tag", | |
2229 | .oneline = "remove a breakpoint by tag", | |
2230 | }; | |
2231 | ||
b32d7a39 | 2232 | static int resume_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
2233 | { |
2234 | int ret; | |
2235 | ||
4c7b7e9b | 2236 | ret = bdrv_debug_resume(blk_bs(blk), argv[1]); |
797ac58c KW |
2237 | if (ret < 0) { |
2238 | printf("Could not resume request: %s\n", strerror(-ret)); | |
b32d7a39 | 2239 | return ret; |
797ac58c | 2240 | } |
b32d7a39 HR |
2241 | |
2242 | return 0; | |
797ac58c KW |
2243 | } |
2244 | ||
2245 | static const cmdinfo_t resume_cmd = { | |
2246 | .name = "resume", | |
2247 | .argmin = 1, | |
2248 | .argmax = 1, | |
2249 | .cfunc = resume_f, | |
2250 | .args = "tag", | |
2251 | .oneline = "resumes the request tagged as tag", | |
2252 | }; | |
2253 | ||
b32d7a39 | 2254 | static int wait_break_f(BlockBackend *blk, int argc, char **argv) |
797ac58c | 2255 | { |
4c7b7e9b HR |
2256 | while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { |
2257 | aio_poll(blk_get_aio_context(blk), true); | |
797ac58c | 2258 | } |
b32d7a39 | 2259 | return 0; |
797ac58c KW |
2260 | } |
2261 | ||
2262 | static const cmdinfo_t wait_break_cmd = { | |
2263 | .name = "wait_break", | |
2264 | .argmin = 1, | |
2265 | .argmax = 1, | |
2266 | .cfunc = wait_break_f, | |
2267 | .args = "tag", | |
2268 | .oneline = "waits for the suspension of a request", | |
2269 | }; | |
2270 | ||
b32d7a39 | 2271 | static int abort_f(BlockBackend *blk, int argc, char **argv) |
797ac58c KW |
2272 | { |
2273 | abort(); | |
2274 | } | |
2275 | ||
2276 | static const cmdinfo_t abort_cmd = { | |
2277 | .name = "abort", | |
2278 | .cfunc = abort_f, | |
2279 | .flags = CMD_NOFILE_OK, | |
2280 | .oneline = "simulate a program crash using abort(3)", | |
2281 | }; | |
2282 | ||
0e82dc7b HR |
2283 | static void sigraise_help(void) |
2284 | { | |
2285 | printf( | |
2286 | "\n" | |
2287 | " raises the given signal\n" | |
2288 | "\n" | |
2289 | " Example:\n" | |
2290 | " 'sigraise %i' - raises SIGTERM\n" | |
2291 | "\n" | |
2292 | " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" | |
2293 | " given to sigraise.\n" | |
2294 | "\n", SIGTERM); | |
2295 | } | |
2296 | ||
b32d7a39 | 2297 | static int sigraise_f(BlockBackend *blk, int argc, char **argv); |
0e82dc7b HR |
2298 | |
2299 | static const cmdinfo_t sigraise_cmd = { | |
2300 | .name = "sigraise", | |
2301 | .cfunc = sigraise_f, | |
2302 | .argmin = 1, | |
2303 | .argmax = 1, | |
2304 | .flags = CMD_NOFILE_OK, | |
2305 | .args = "signal", | |
2306 | .oneline = "raises a signal", | |
2307 | .help = sigraise_help, | |
2308 | }; | |
2309 | ||
b32d7a39 | 2310 | static int sigraise_f(BlockBackend *blk, int argc, char **argv) |
0e82dc7b | 2311 | { |
9b0beaf3 | 2312 | int64_t sig = cvtnum(argv[1]); |
0e82dc7b | 2313 | if (sig < 0) { |
a9ecfa00 | 2314 | print_cvtnum_err(sig, argv[1]); |
b32d7a39 | 2315 | return sig; |
9b0beaf3 JS |
2316 | } else if (sig > NSIG) { |
2317 | printf("signal argument '%s' is too large to be a valid signal\n", | |
2318 | argv[1]); | |
b32d7a39 | 2319 | return -EINVAL; |
0e82dc7b HR |
2320 | } |
2321 | ||
2322 | /* Using raise() to kill this process does not necessarily flush all open | |
2323 | * streams. At least stdout and stderr (although the latter should be | |
2324 | * non-buffered anyway) should be flushed, though. */ | |
2325 | fflush(stdout); | |
2326 | fflush(stderr); | |
2327 | ||
2328 | raise(sig); | |
b32d7a39 HR |
2329 | |
2330 | return 0; | |
0e82dc7b HR |
2331 | } |
2332 | ||
cd33d02a KW |
2333 | static void sleep_cb(void *opaque) |
2334 | { | |
2335 | bool *expired = opaque; | |
2336 | *expired = true; | |
2337 | } | |
2338 | ||
b32d7a39 | 2339 | static int sleep_f(BlockBackend *blk, int argc, char **argv) |
cd33d02a KW |
2340 | { |
2341 | char *endptr; | |
2342 | long ms; | |
2343 | struct QEMUTimer *timer; | |
2344 | bool expired = false; | |
2345 | ||
2346 | ms = strtol(argv[1], &endptr, 0); | |
2347 | if (ms < 0 || *endptr != '\0') { | |
2348 | printf("%s is not a valid number\n", argv[1]); | |
b32d7a39 | 2349 | return -EINVAL; |
cd33d02a KW |
2350 | } |
2351 | ||
2352 | timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); | |
2353 | timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); | |
2354 | ||
2355 | while (!expired) { | |
2356 | main_loop_wait(false); | |
2357 | } | |
2358 | ||
2359 | timer_free(timer); | |
b32d7a39 | 2360 | return 0; |
cd33d02a KW |
2361 | } |
2362 | ||
2363 | static const cmdinfo_t sleep_cmd = { | |
2364 | .name = "sleep", | |
2365 | .argmin = 1, | |
2366 | .argmax = 1, | |
2367 | .cfunc = sleep_f, | |
2368 | .flags = CMD_NOFILE_OK, | |
2369 | .oneline = "waits for the given value in milliseconds", | |
2370 | }; | |
2371 | ||
f18a834a KW |
2372 | static void help_oneline(const char *cmd, const cmdinfo_t *ct) |
2373 | { | |
da16f4b8 | 2374 | printf("%s ", cmd); |
f18a834a KW |
2375 | |
2376 | if (ct->args) { | |
2377 | printf("%s ", ct->args); | |
2378 | } | |
2379 | printf("-- %s\n", ct->oneline); | |
2380 | } | |
2381 | ||
2382 | static void help_onecmd(const char *cmd, const cmdinfo_t *ct) | |
2383 | { | |
2384 | help_oneline(cmd, ct); | |
2385 | if (ct->help) { | |
2386 | ct->help(); | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | static void help_all(void) | |
2391 | { | |
2392 | const cmdinfo_t *ct; | |
2393 | ||
2394 | for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { | |
2395 | help_oneline(ct->name, ct); | |
2396 | } | |
2397 | printf("\nUse 'help commandname' for extended help.\n"); | |
2398 | } | |
2399 | ||
b32d7a39 | 2400 | static int help_f(BlockBackend *blk, int argc, char **argv) |
f18a834a KW |
2401 | { |
2402 | const cmdinfo_t *ct; | |
2403 | ||
da16f4b8 | 2404 | if (argc < 2) { |
f18a834a | 2405 | help_all(); |
b32d7a39 | 2406 | return 0; |
f18a834a KW |
2407 | } |
2408 | ||
2409 | ct = find_command(argv[1]); | |
2410 | if (ct == NULL) { | |
2411 | printf("command %s not found\n", argv[1]); | |
b32d7a39 | 2412 | return -EINVAL; |
f18a834a KW |
2413 | } |
2414 | ||
2415 | help_onecmd(argv[1], ct); | |
b32d7a39 | 2416 | return 0; |
f18a834a KW |
2417 | } |
2418 | ||
2419 | static const cmdinfo_t help_cmd = { | |
2420 | .name = "help", | |
2421 | .altname = "?", | |
2422 | .cfunc = help_f, | |
2423 | .argmin = 0, | |
2424 | .argmax = 1, | |
2425 | .flags = CMD_FLAG_GLOBAL, | |
2426 | .args = "[command]", | |
2427 | .oneline = "help for one or all commands", | |
2428 | }; | |
2429 | ||
78632a3d VSO |
2430 | /* |
2431 | * Called with aio context of blk acquired. Or with qemu_get_aio_context() | |
2432 | * context acquired if blk is NULL. | |
2433 | */ | |
b32d7a39 | 2434 | int qemuio_command(BlockBackend *blk, const char *cmd) |
dd583296 KW |
2435 | { |
2436 | char *input; | |
2437 | const cmdinfo_t *ct; | |
2438 | char **v; | |
2439 | int c; | |
b32d7a39 | 2440 | int ret = 0; |
dd583296 KW |
2441 | |
2442 | input = g_strdup(cmd); | |
2443 | v = breakline(input, &c); | |
2444 | if (c) { | |
2445 | ct = find_command(v[0]); | |
2446 | if (ct) { | |
b32d7a39 | 2447 | ret = command(blk, ct, c, v); |
dd583296 KW |
2448 | } else { |
2449 | fprintf(stderr, "command \"%s\" not found\n", v[0]); | |
b32d7a39 | 2450 | ret = -EINVAL; |
dd583296 KW |
2451 | } |
2452 | } | |
2453 | g_free(input); | |
2454 | g_free(v); | |
b32d7a39 HR |
2455 | |
2456 | return ret; | |
dd583296 KW |
2457 | } |
2458 | ||
797ac58c KW |
2459 | static void __attribute((constructor)) init_qemuio_commands(void) |
2460 | { | |
2461 | /* initialize commands */ | |
c2cdf5c5 KW |
2462 | qemuio_add_command(&help_cmd); |
2463 | qemuio_add_command(&read_cmd); | |
2464 | qemuio_add_command(&readv_cmd); | |
2465 | qemuio_add_command(&write_cmd); | |
2466 | qemuio_add_command(&writev_cmd); | |
c2cdf5c5 KW |
2467 | qemuio_add_command(&aio_read_cmd); |
2468 | qemuio_add_command(&aio_write_cmd); | |
2469 | qemuio_add_command(&aio_flush_cmd); | |
2470 | qemuio_add_command(&flush_cmd); | |
2471 | qemuio_add_command(&truncate_cmd); | |
2472 | qemuio_add_command(&length_cmd); | |
2473 | qemuio_add_command(&info_cmd); | |
2474 | qemuio_add_command(&discard_cmd); | |
2475 | qemuio_add_command(&alloc_cmd); | |
2476 | qemuio_add_command(&map_cmd); | |
5bbd2e59 | 2477 | qemuio_add_command(&reopen_cmd); |
c2cdf5c5 | 2478 | qemuio_add_command(&break_cmd); |
4cc70e93 | 2479 | qemuio_add_command(&remove_break_cmd); |
c2cdf5c5 KW |
2480 | qemuio_add_command(&resume_cmd); |
2481 | qemuio_add_command(&wait_break_cmd); | |
2482 | qemuio_add_command(&abort_cmd); | |
cd33d02a | 2483 | qemuio_add_command(&sleep_cmd); |
0e82dc7b | 2484 | qemuio_add_command(&sigraise_cmd); |
797ac58c | 2485 | } |