1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4093ea232SEric Blake * Copyright (C) 2009-2016 Red Hat, Inc. 5797ac58cSKevin Wolf * Copyright (c) 2003-2005 Silicon Graphics, Inc. 6797ac58cSKevin Wolf * 7797ac58cSKevin Wolf * This work is licensed under the terms of the GNU GPL, version 2 or later. 8797ac58cSKevin Wolf * See the COPYING file in the top-level directory. 9797ac58cSKevin Wolf */ 10797ac58cSKevin Wolf 1180c71a24SPeter Maydell #include "qemu/osdep.h" 12da34e65cSMarkus Armbruster #include "qapi/error.h" 133d21994fSKevin Wolf #include "qemu-io.h" 144c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 154c7b7e9bSMax Reitz #include "block/block.h" 164c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 17a8d8ecb7SMax Reitz #include "block/qapi.h" 18d49b6836SMarkus Armbruster #include "qemu/error-report.h" 196a1751b7SAlex Bligh #include "qemu/main-loop.h" 20cd33d02aSKevin Wolf #include "qemu/timer.h" 21f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 22797ac58cSKevin Wolf 23797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 24797ac58cSKevin Wolf 25f9883880SStefan Weil bool qemuio_misalign; 26797ac58cSKevin Wolf 27c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 28c2cdf5c5SKevin Wolf static int ncmds; 29c2cdf5c5SKevin Wolf 30c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 31c2cdf5c5SKevin Wolf { 32c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 33c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 34c2cdf5c5SKevin Wolf } 35c2cdf5c5SKevin Wolf 36c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 37c2cdf5c5SKevin Wolf { 3802c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 39c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 40c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 41c2cdf5c5SKevin Wolf } 42c2cdf5c5SKevin Wolf 43c2cdf5c5SKevin Wolf int qemuio_command_usage(const cmdinfo_t *ci) 44c2cdf5c5SKevin Wolf { 45c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 46c2cdf5c5SKevin Wolf return 0; 47c2cdf5c5SKevin Wolf } 48c2cdf5c5SKevin Wolf 494c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 50c2cdf5c5SKevin Wolf { 51c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 52c2cdf5c5SKevin Wolf return 1; 53c2cdf5c5SKevin Wolf } 544c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 55c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 56c2cdf5c5SKevin Wolf return 0; 57c2cdf5c5SKevin Wolf } 58c2cdf5c5SKevin Wolf return 1; 59c2cdf5c5SKevin Wolf } 60c2cdf5c5SKevin Wolf 614c7b7e9bSMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 623d21994fSKevin Wolf char **argv) 63c2cdf5c5SKevin Wolf { 64c2cdf5c5SKevin Wolf char *cmd = argv[0]; 65c2cdf5c5SKevin Wolf 664c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 67c2cdf5c5SKevin Wolf return 0; 68c2cdf5c5SKevin Wolf } 69c2cdf5c5SKevin Wolf 70c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 71c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 72c2cdf5c5SKevin Wolf fprintf(stderr, 73c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 74c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 75c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 76c2cdf5c5SKevin Wolf fprintf(stderr, 77c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 78c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 79c2cdf5c5SKevin Wolf } else { 80c2cdf5c5SKevin Wolf fprintf(stderr, 81c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 82c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 83c2cdf5c5SKevin Wolf } 84c2cdf5c5SKevin Wolf return 0; 85c2cdf5c5SKevin Wolf } 86c2cdf5c5SKevin Wolf optind = 0; 874c7b7e9bSMax Reitz return ct->cfunc(blk, argc, argv); 88c2cdf5c5SKevin Wolf } 89c2cdf5c5SKevin Wolf 90c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 91c2cdf5c5SKevin Wolf { 92c2cdf5c5SKevin Wolf cmdinfo_t *ct; 93c2cdf5c5SKevin Wolf 94c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 95c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 96c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 97c2cdf5c5SKevin Wolf { 98c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 99c2cdf5c5SKevin Wolf } 100c2cdf5c5SKevin Wolf } 101c2cdf5c5SKevin Wolf return NULL; 102c2cdf5c5SKevin Wolf } 103c2cdf5c5SKevin Wolf 1044694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1054694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1064694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1074694020dSStefan Hajnoczi void *opaque) 1084694020dSStefan Hajnoczi { 1094694020dSStefan Hajnoczi cmdinfo_t *ct; 1104694020dSStefan Hajnoczi size_t input_len = strlen(input); 1114694020dSStefan Hajnoczi 1124694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1134694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1144694020dSStefan Hajnoczi fn(ct->name, opaque); 1154694020dSStefan Hajnoczi } 1164694020dSStefan Hajnoczi } 1174694020dSStefan Hajnoczi } 1184694020dSStefan Hajnoczi 119c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 120c2cdf5c5SKevin Wolf { 121c2cdf5c5SKevin Wolf int c = 0; 122c2cdf5c5SKevin Wolf char *p; 1235839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 124c2cdf5c5SKevin Wolf 125c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 126c2cdf5c5SKevin Wolf if (!*p) { 127c2cdf5c5SKevin Wolf continue; 128c2cdf5c5SKevin Wolf } 129c2cdf5c5SKevin Wolf c++; 13008193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 131c2cdf5c5SKevin Wolf rval[c - 1] = p; 132c2cdf5c5SKevin Wolf rval[c] = NULL; 133c2cdf5c5SKevin Wolf } 134c2cdf5c5SKevin Wolf *count = c; 135c2cdf5c5SKevin Wolf return rval; 136c2cdf5c5SKevin Wolf } 137c2cdf5c5SKevin Wolf 138797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 139797ac58cSKevin Wolf { 140797ac58cSKevin Wolf char *end; 141ef5a7885SJohn Snow int64_t ret; 142ef5a7885SJohn Snow 143ef5a7885SJohn Snow ret = qemu_strtosz_suffix(s, &end, QEMU_STRTOSZ_DEFSUFFIX_B); 144ef5a7885SJohn Snow if (*end != '\0') { 145ef5a7885SJohn Snow /* Detritus at the end of the string */ 146ef5a7885SJohn Snow return -EINVAL; 147ef5a7885SJohn Snow } 148ef5a7885SJohn Snow return ret; 149797ac58cSKevin Wolf } 150797ac58cSKevin Wolf 151a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 152a9ecfa00SJohn Snow { 153a9ecfa00SJohn Snow switch (rc) { 154a9ecfa00SJohn Snow case -EINVAL: 155a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 156a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 157a9ecfa00SJohn Snow break; 158a9ecfa00SJohn Snow case -ERANGE: 159a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 160a9ecfa00SJohn Snow break; 161a9ecfa00SJohn Snow default: 162a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 163a9ecfa00SJohn Snow } 164a9ecfa00SJohn Snow } 165a9ecfa00SJohn Snow 1660b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 1670b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 1680b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 1690b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 1700b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 1710b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 1720b613881SKevin Wolf 1730b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 1740b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 1750b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 1760b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 1770b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 1780b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 1790b613881SKevin Wolf 1800b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 1810b613881SKevin Wolf { 1820b613881SKevin Wolf char *trim; 1830b613881SKevin Wolf const char *suffix; 1840b613881SKevin Wolf 1850b613881SKevin Wolf if (value >= EXABYTES(1)) { 1860b613881SKevin Wolf suffix = " EiB"; 1870b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 1880b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 1890b613881SKevin Wolf suffix = " PiB"; 1900b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 1910b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 1920b613881SKevin Wolf suffix = " TiB"; 1930b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 1940b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 1950b613881SKevin Wolf suffix = " GiB"; 1960b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 1970b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 1980b613881SKevin Wolf suffix = " MiB"; 1990b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2000b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2010b613881SKevin Wolf suffix = " KiB"; 2020b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2030b613881SKevin Wolf } else { 2040b613881SKevin Wolf suffix = " bytes"; 2050b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2060b613881SKevin Wolf } 2070b613881SKevin Wolf 2080b613881SKevin Wolf trim = strstr(str, ".000"); 2090b613881SKevin Wolf if (trim) { 2100b613881SKevin Wolf strcpy(trim, suffix); 2110b613881SKevin Wolf } else { 2120b613881SKevin Wolf strcat(str, suffix); 2130b613881SKevin Wolf } 2140b613881SKevin Wolf } 2150b613881SKevin Wolf 2160b613881SKevin Wolf 2170b613881SKevin Wolf 2180b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2190b613881SKevin Wolf { 2200b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2210b613881SKevin Wolf if (t1.tv_usec < 0) { 2220b613881SKevin Wolf t1.tv_usec += 1000000; 2230b613881SKevin Wolf t1.tv_sec--; 2240b613881SKevin Wolf } 2250b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2260b613881SKevin Wolf return t1; 2270b613881SKevin Wolf } 2280b613881SKevin Wolf 2290b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2300b613881SKevin Wolf { 2310b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2320b613881SKevin Wolf } 2330b613881SKevin Wolf 2340b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2350b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2360b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2370b613881SKevin Wolf 2380b613881SKevin Wolf enum { 2390b613881SKevin Wolf DEFAULT_TIME = 0x0, 2400b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2410b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2420b613881SKevin Wolf }; 2430b613881SKevin Wolf 2440b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2450b613881SKevin Wolf { 2460b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2470b613881SKevin Wolf 2480b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2490b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2500b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2510b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2520b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2530b613881SKevin Wolf (unsigned int) (usec * 100)); 2540b613881SKevin Wolf return; 2550b613881SKevin Wolf } 2560b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2570b613881SKevin Wolf } 2580b613881SKevin Wolf 2590b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2600b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2610b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2620b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2630b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2640b613881SKevin Wolf (unsigned int) (usec * 100)); 2650b613881SKevin Wolf } else { 2660b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 2670b613881SKevin Wolf } 2680b613881SKevin Wolf } 2690b613881SKevin Wolf 270797ac58cSKevin Wolf /* 271797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 272797ac58cSKevin Wolf * 273797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 274797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 275797ac58cSKevin Wolf */ 276797ac58cSKevin Wolf static int parse_pattern(const char *arg) 277797ac58cSKevin Wolf { 278797ac58cSKevin Wolf char *endptr = NULL; 279797ac58cSKevin Wolf long pattern; 280797ac58cSKevin Wolf 281797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 282797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 283797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 284797ac58cSKevin Wolf return -1; 285797ac58cSKevin Wolf } 286797ac58cSKevin Wolf 287797ac58cSKevin Wolf return pattern; 288797ac58cSKevin Wolf } 289797ac58cSKevin Wolf 290797ac58cSKevin Wolf /* 291797ac58cSKevin Wolf * Memory allocation helpers. 292797ac58cSKevin Wolf * 293797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 294797ac58cSKevin Wolf * that is specified on the command line. 295797ac58cSKevin Wolf */ 296797ac58cSKevin Wolf 297797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 2984c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 299797ac58cSKevin Wolf { 300797ac58cSKevin Wolf void *buf; 301797ac58cSKevin Wolf 302797ac58cSKevin Wolf if (qemuio_misalign) { 303797ac58cSKevin Wolf len += MISALIGN_OFFSET; 304797ac58cSKevin Wolf } 3054c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 306797ac58cSKevin Wolf memset(buf, pattern, len); 307797ac58cSKevin Wolf if (qemuio_misalign) { 308797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 309797ac58cSKevin Wolf } 310797ac58cSKevin Wolf return buf; 311797ac58cSKevin Wolf } 312797ac58cSKevin Wolf 313797ac58cSKevin Wolf static void qemu_io_free(void *p) 314797ac58cSKevin Wolf { 315797ac58cSKevin Wolf if (qemuio_misalign) { 316797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 317797ac58cSKevin Wolf } 318797ac58cSKevin Wolf qemu_vfree(p); 319797ac58cSKevin Wolf } 320797ac58cSKevin Wolf 3219b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 322797ac58cSKevin Wolf { 3239b0beaf3SJohn Snow uint64_t i; 3249b0beaf3SJohn Snow int j; 325797ac58cSKevin Wolf const uint8_t *p; 326797ac58cSKevin Wolf 327797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 328797ac58cSKevin Wolf const uint8_t *s = p; 329797ac58cSKevin Wolf 330797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 331797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 332797ac58cSKevin Wolf printf("%02x ", *p); 333797ac58cSKevin Wolf } 334797ac58cSKevin Wolf printf(" "); 335797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 336797ac58cSKevin Wolf if (isalnum(*s)) { 337797ac58cSKevin Wolf printf("%c", *s); 338797ac58cSKevin Wolf } else { 339797ac58cSKevin Wolf printf("."); 340797ac58cSKevin Wolf } 341797ac58cSKevin Wolf } 342797ac58cSKevin Wolf printf("\n"); 343797ac58cSKevin Wolf } 344797ac58cSKevin Wolf } 345797ac58cSKevin Wolf 346797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 347dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 348797ac58cSKevin Wolf { 349797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 350797ac58cSKevin Wolf 351797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 352797ac58cSKevin Wolf if (!Cflag) { 353797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 354797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3559b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 356797ac58cSKevin Wolf op, total, count, offset); 357797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 358797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 359797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3609b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 361797ac58cSKevin Wolf total, cnt, ts, 362797ac58cSKevin Wolf tdiv((double)total, *t), 363797ac58cSKevin Wolf tdiv((double)cnt, *t)); 364797ac58cSKevin Wolf } 365797ac58cSKevin Wolf } 366797ac58cSKevin Wolf 367797ac58cSKevin Wolf /* 368797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 369797ac58cSKevin Wolf * vector matching it. 370797ac58cSKevin Wolf */ 371797ac58cSKevin Wolf static void * 3724c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 373797ac58cSKevin Wolf int pattern) 374797ac58cSKevin Wolf { 375797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 376797ac58cSKevin Wolf size_t count = 0; 377797ac58cSKevin Wolf void *buf = NULL; 378797ac58cSKevin Wolf void *p; 379797ac58cSKevin Wolf int i; 380797ac58cSKevin Wolf 381797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 382797ac58cSKevin Wolf char *arg = argv[i]; 383797ac58cSKevin Wolf int64_t len; 384797ac58cSKevin Wolf 385797ac58cSKevin Wolf len = cvtnum(arg); 386797ac58cSKevin Wolf if (len < 0) { 387a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 388797ac58cSKevin Wolf goto fail; 389797ac58cSKevin Wolf } 390797ac58cSKevin Wolf 391*3026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 392*3026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 393*3026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 394*3026c468SAlberto Garcia goto fail; 395*3026c468SAlberto Garcia } 396*3026c468SAlberto Garcia 397*3026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 398*3026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 399*3026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 400797ac58cSKevin Wolf goto fail; 401797ac58cSKevin Wolf } 402797ac58cSKevin Wolf 403797ac58cSKevin Wolf sizes[i] = len; 404797ac58cSKevin Wolf count += len; 405797ac58cSKevin Wolf } 406797ac58cSKevin Wolf 407797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 408797ac58cSKevin Wolf 4094c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 410797ac58cSKevin Wolf 411797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 412797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 413797ac58cSKevin Wolf p += sizes[i]; 414797ac58cSKevin Wolf } 415797ac58cSKevin Wolf 416797ac58cSKevin Wolf fail: 417797ac58cSKevin Wolf g_free(sizes); 418797ac58cSKevin Wolf return buf; 419797ac58cSKevin Wolf } 420797ac58cSKevin Wolf 4219b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 4229b0beaf3SJohn Snow int64_t count, int64_t *total) 423797ac58cSKevin Wolf { 4249b0beaf3SJohn Snow if (count > INT_MAX) { 4259b0beaf3SJohn Snow return -ERANGE; 4269b0beaf3SJohn Snow } 4279b0beaf3SJohn Snow 4284c7b7e9bSMax Reitz *total = blk_pread(blk, offset, (uint8_t *)buf, count); 429797ac58cSKevin Wolf if (*total < 0) { 430797ac58cSKevin Wolf return *total; 431797ac58cSKevin Wolf } 432797ac58cSKevin Wolf return 1; 433797ac58cSKevin Wolf } 434797ac58cSKevin Wolf 4359b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 436770e0e0eSEric Blake int64_t count, int flags, int64_t *total) 437797ac58cSKevin Wolf { 4389b0beaf3SJohn Snow if (count > INT_MAX) { 4399b0beaf3SJohn Snow return -ERANGE; 4409b0beaf3SJohn Snow } 4419b0beaf3SJohn Snow 442770e0e0eSEric Blake *total = blk_pwrite(blk, offset, (uint8_t *)buf, count, flags); 443797ac58cSKevin Wolf if (*total < 0) { 444797ac58cSKevin Wolf return *total; 445797ac58cSKevin Wolf } 446797ac58cSKevin Wolf return 1; 447797ac58cSKevin Wolf } 448797ac58cSKevin Wolf 449797ac58cSKevin Wolf typedef struct { 4504c7b7e9bSMax Reitz BlockBackend *blk; 451797ac58cSKevin Wolf int64_t offset; 4529b0beaf3SJohn Snow int64_t count; 4539b0beaf3SJohn Snow int64_t *total; 454770e0e0eSEric Blake int flags; 455797ac58cSKevin Wolf int ret; 456797ac58cSKevin Wolf bool done; 457797ac58cSKevin Wolf } CoWriteZeroes; 458797ac58cSKevin Wolf 459d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 460797ac58cSKevin Wolf { 461797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 462797ac58cSKevin Wolf 463d004bd52SEric Blake data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->count, 464770e0e0eSEric Blake data->flags); 465797ac58cSKevin Wolf data->done = true; 466797ac58cSKevin Wolf if (data->ret < 0) { 467797ac58cSKevin Wolf *data->total = data->ret; 468797ac58cSKevin Wolf return; 469797ac58cSKevin Wolf } 470797ac58cSKevin Wolf 471797ac58cSKevin Wolf *data->total = data->count; 472797ac58cSKevin Wolf } 473797ac58cSKevin Wolf 474d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 475d004bd52SEric Blake int64_t count, int flags, int64_t *total) 476797ac58cSKevin Wolf { 477797ac58cSKevin Wolf Coroutine *co; 478797ac58cSKevin Wolf CoWriteZeroes data = { 4794c7b7e9bSMax Reitz .blk = blk, 480797ac58cSKevin Wolf .offset = offset, 481797ac58cSKevin Wolf .count = count, 482797ac58cSKevin Wolf .total = total, 483770e0e0eSEric Blake .flags = flags, 484797ac58cSKevin Wolf .done = false, 485797ac58cSKevin Wolf }; 486797ac58cSKevin Wolf 487a3674679SMax Reitz if (count > INT_MAX) { 4889b0beaf3SJohn Snow return -ERANGE; 4899b0beaf3SJohn Snow } 4909b0beaf3SJohn Snow 4910b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 4920b8b8753SPaolo Bonzini qemu_coroutine_enter(co); 493797ac58cSKevin Wolf while (!data.done) { 4944c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 495797ac58cSKevin Wolf } 496797ac58cSKevin Wolf if (data.ret < 0) { 497797ac58cSKevin Wolf return data.ret; 498797ac58cSKevin Wolf } else { 499797ac58cSKevin Wolf return 1; 500797ac58cSKevin Wolf } 501797ac58cSKevin Wolf } 502797ac58cSKevin Wolf 5034c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 5049b0beaf3SJohn Snow int64_t count, int64_t *total) 505797ac58cSKevin Wolf { 506797ac58cSKevin Wolf int ret; 507797ac58cSKevin Wolf 508a3674679SMax Reitz if (count >> 9 > BDRV_REQUEST_MAX_SECTORS) { 5099b0beaf3SJohn Snow return -ERANGE; 5109b0beaf3SJohn Snow } 5119b0beaf3SJohn Snow 512fe5c1355SPavel Butsykin ret = blk_pwrite_compressed(blk, offset, buf, count); 513797ac58cSKevin Wolf if (ret < 0) { 514797ac58cSKevin Wolf return ret; 515797ac58cSKevin Wolf } 516797ac58cSKevin Wolf *total = count; 517797ac58cSKevin Wolf return 1; 518797ac58cSKevin Wolf } 519797ac58cSKevin Wolf 5204c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5219b0beaf3SJohn Snow int64_t count, int64_t *total) 522797ac58cSKevin Wolf { 5239b0beaf3SJohn Snow if (count > INT_MAX) { 5249b0beaf3SJohn Snow return -ERANGE; 5259b0beaf3SJohn Snow } 5269b0beaf3SJohn Snow 5274c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 528797ac58cSKevin Wolf if (*total < 0) { 529797ac58cSKevin Wolf return *total; 530797ac58cSKevin Wolf } 531797ac58cSKevin Wolf return 1; 532797ac58cSKevin Wolf } 533797ac58cSKevin Wolf 5344c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5359b0beaf3SJohn Snow int64_t count, int64_t *total) 536797ac58cSKevin Wolf { 5379b0beaf3SJohn Snow if (count > INT_MAX) { 5389b0beaf3SJohn Snow return -ERANGE; 5399b0beaf3SJohn Snow } 5409b0beaf3SJohn Snow 5414c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 542797ac58cSKevin Wolf if (*total < 0) { 543797ac58cSKevin Wolf return *total; 544797ac58cSKevin Wolf } 545797ac58cSKevin Wolf return 1; 546797ac58cSKevin Wolf } 547797ac58cSKevin Wolf 548797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 549797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 550797ac58cSKevin Wolf { 551797ac58cSKevin Wolf *(int *)opaque = ret; 552797ac58cSKevin Wolf } 553797ac58cSKevin Wolf 5544c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 555797ac58cSKevin Wolf int64_t offset, int *total) 556797ac58cSKevin Wolf { 557797ac58cSKevin Wolf int async_ret = NOT_DONE; 558797ac58cSKevin Wolf 5597b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 560797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 561797ac58cSKevin Wolf main_loop_wait(false); 562797ac58cSKevin Wolf } 563797ac58cSKevin Wolf 564797ac58cSKevin Wolf *total = qiov->size; 565797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 566797ac58cSKevin Wolf } 567797ac58cSKevin Wolf 5684c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 569770e0e0eSEric Blake int64_t offset, int flags, int *total) 570797ac58cSKevin Wolf { 571797ac58cSKevin Wolf int async_ret = NOT_DONE; 572797ac58cSKevin Wolf 573770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 574797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 575797ac58cSKevin Wolf main_loop_wait(false); 576797ac58cSKevin Wolf } 577797ac58cSKevin Wolf 578797ac58cSKevin Wolf *total = qiov->size; 579797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 580797ac58cSKevin Wolf } 581797ac58cSKevin Wolf 582797ac58cSKevin Wolf static void read_help(void) 583797ac58cSKevin Wolf { 584797ac58cSKevin Wolf printf( 585797ac58cSKevin Wolf "\n" 586797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 587797ac58cSKevin Wolf "\n" 588797ac58cSKevin Wolf " Example:\n" 589797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 590797ac58cSKevin Wolf "\n" 591797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 592797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 593797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 594797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 595797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 596093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 597797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 598797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 599797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 600797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 601797ac58cSKevin Wolf "\n"); 602797ac58cSKevin Wolf } 603797ac58cSKevin Wolf 6044c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 605797ac58cSKevin Wolf 606797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 607797ac58cSKevin Wolf .name = "read", 608797ac58cSKevin Wolf .altname = "r", 609797ac58cSKevin Wolf .cfunc = read_f, 610797ac58cSKevin Wolf .argmin = 2, 611797ac58cSKevin Wolf .argmax = -1, 612093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 613797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 614797ac58cSKevin Wolf .help = read_help, 615797ac58cSKevin Wolf }; 616797ac58cSKevin Wolf 6174c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 618797ac58cSKevin Wolf { 619797ac58cSKevin Wolf struct timeval t1, t2; 620093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 621dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 622797ac58cSKevin Wolf int c, cnt; 623797ac58cSKevin Wolf char *buf; 624797ac58cSKevin Wolf int64_t offset; 6259b0beaf3SJohn Snow int64_t count; 626797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6279b0beaf3SJohn Snow int64_t total = 0; 6289b0beaf3SJohn Snow int pattern = 0; 6299b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 630797ac58cSKevin Wolf 631b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 632797ac58cSKevin Wolf switch (c) { 633797ac58cSKevin Wolf case 'b': 634dc38852aSEric Blake bflag = true; 635797ac58cSKevin Wolf break; 636797ac58cSKevin Wolf case 'C': 637dc38852aSEric Blake Cflag = true; 638797ac58cSKevin Wolf break; 639797ac58cSKevin Wolf case 'l': 640dc38852aSEric Blake lflag = true; 641797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 642797ac58cSKevin Wolf if (pattern_count < 0) { 643a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 644797ac58cSKevin Wolf return 0; 645797ac58cSKevin Wolf } 646797ac58cSKevin Wolf break; 647797ac58cSKevin Wolf case 'p': 648093ea232SEric Blake /* Ignored for backwards compatibility */ 649797ac58cSKevin Wolf break; 650797ac58cSKevin Wolf case 'P': 651dc38852aSEric Blake Pflag = true; 652797ac58cSKevin Wolf pattern = parse_pattern(optarg); 653797ac58cSKevin Wolf if (pattern < 0) { 654797ac58cSKevin Wolf return 0; 655797ac58cSKevin Wolf } 656797ac58cSKevin Wolf break; 657797ac58cSKevin Wolf case 'q': 658dc38852aSEric Blake qflag = true; 659797ac58cSKevin Wolf break; 660797ac58cSKevin Wolf case 's': 661dc38852aSEric Blake sflag = true; 662797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 663797ac58cSKevin Wolf if (pattern_offset < 0) { 664a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 665797ac58cSKevin Wolf return 0; 666797ac58cSKevin Wolf } 667797ac58cSKevin Wolf break; 668797ac58cSKevin Wolf case 'v': 669dc38852aSEric Blake vflag = true; 670797ac58cSKevin Wolf break; 671797ac58cSKevin Wolf default: 672c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 673797ac58cSKevin Wolf } 674797ac58cSKevin Wolf } 675797ac58cSKevin Wolf 676797ac58cSKevin Wolf if (optind != argc - 2) { 677c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 678797ac58cSKevin Wolf } 679797ac58cSKevin Wolf 680797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 681797ac58cSKevin Wolf if (offset < 0) { 682a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 683797ac58cSKevin Wolf return 0; 684797ac58cSKevin Wolf } 685797ac58cSKevin Wolf 686797ac58cSKevin Wolf optind++; 687797ac58cSKevin Wolf count = cvtnum(argv[optind]); 688797ac58cSKevin Wolf if (count < 0) { 689a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 690797ac58cSKevin Wolf return 0; 691*3026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 6929b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 693*3026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 6949b0beaf3SJohn Snow return 0; 695797ac58cSKevin Wolf } 696797ac58cSKevin Wolf 697797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 698c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 699797ac58cSKevin Wolf } 700797ac58cSKevin Wolf 701797ac58cSKevin Wolf if (!lflag) { 702797ac58cSKevin Wolf pattern_count = count - pattern_offset; 703797ac58cSKevin Wolf } 704797ac58cSKevin Wolf 705797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 706797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 707797ac58cSKevin Wolf return 0; 708797ac58cSKevin Wolf } 709797ac58cSKevin Wolf 710093ea232SEric Blake if (bflag) { 711797ac58cSKevin Wolf if (offset & 0x1ff) { 712797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 713797ac58cSKevin Wolf offset); 714797ac58cSKevin Wolf return 0; 715797ac58cSKevin Wolf } 716797ac58cSKevin Wolf if (count & 0x1ff) { 7179b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 718797ac58cSKevin Wolf count); 719797ac58cSKevin Wolf return 0; 720797ac58cSKevin Wolf } 721797ac58cSKevin Wolf } 722797ac58cSKevin Wolf 7234c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 724797ac58cSKevin Wolf 725797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7267b3f9712SEric Blake if (bflag) { 7274c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 728797ac58cSKevin Wolf } else { 7297b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 730797ac58cSKevin Wolf } 731797ac58cSKevin Wolf gettimeofday(&t2, NULL); 732797ac58cSKevin Wolf 733797ac58cSKevin Wolf if (cnt < 0) { 734797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 735797ac58cSKevin Wolf goto out; 736797ac58cSKevin Wolf } 737797ac58cSKevin Wolf 738797ac58cSKevin Wolf if (Pflag) { 739797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 740797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 741797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 742797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7439b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 744797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 745797ac58cSKevin Wolf } 746797ac58cSKevin Wolf g_free(cmp_buf); 747797ac58cSKevin Wolf } 748797ac58cSKevin Wolf 749797ac58cSKevin Wolf if (qflag) { 750797ac58cSKevin Wolf goto out; 751797ac58cSKevin Wolf } 752797ac58cSKevin Wolf 753797ac58cSKevin Wolf if (vflag) { 754797ac58cSKevin Wolf dump_buffer(buf, offset, count); 755797ac58cSKevin Wolf } 756797ac58cSKevin Wolf 757797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 758797ac58cSKevin Wolf t2 = tsub(t2, t1); 759797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 760797ac58cSKevin Wolf 761797ac58cSKevin Wolf out: 762797ac58cSKevin Wolf qemu_io_free(buf); 763797ac58cSKevin Wolf 764797ac58cSKevin Wolf return 0; 765797ac58cSKevin Wolf } 766797ac58cSKevin Wolf 767797ac58cSKevin Wolf static void readv_help(void) 768797ac58cSKevin Wolf { 769797ac58cSKevin Wolf printf( 770797ac58cSKevin Wolf "\n" 771797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 772797ac58cSKevin Wolf "\n" 773797ac58cSKevin Wolf " Example:\n" 774797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 775797ac58cSKevin Wolf "\n" 776797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 777797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 778797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 779797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 780797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 781797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 782797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 783797ac58cSKevin Wolf "\n"); 784797ac58cSKevin Wolf } 785797ac58cSKevin Wolf 7864c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 787797ac58cSKevin Wolf 788797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 789797ac58cSKevin Wolf .name = "readv", 790797ac58cSKevin Wolf .cfunc = readv_f, 791797ac58cSKevin Wolf .argmin = 2, 792797ac58cSKevin Wolf .argmax = -1, 793797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 794797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 795797ac58cSKevin Wolf .help = readv_help, 796797ac58cSKevin Wolf }; 797797ac58cSKevin Wolf 7984c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 799797ac58cSKevin Wolf { 800797ac58cSKevin Wolf struct timeval t1, t2; 801dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 802797ac58cSKevin Wolf int c, cnt; 803797ac58cSKevin Wolf char *buf; 804797ac58cSKevin Wolf int64_t offset; 805797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 806797ac58cSKevin Wolf int total = 0; 807797ac58cSKevin Wolf int nr_iov; 808797ac58cSKevin Wolf QEMUIOVector qiov; 809797ac58cSKevin Wolf int pattern = 0; 810dc38852aSEric Blake bool Pflag = false; 811797ac58cSKevin Wolf 812b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 813797ac58cSKevin Wolf switch (c) { 814797ac58cSKevin Wolf case 'C': 815dc38852aSEric Blake Cflag = true; 816797ac58cSKevin Wolf break; 817797ac58cSKevin Wolf case 'P': 818dc38852aSEric Blake Pflag = true; 819797ac58cSKevin Wolf pattern = parse_pattern(optarg); 820797ac58cSKevin Wolf if (pattern < 0) { 821797ac58cSKevin Wolf return 0; 822797ac58cSKevin Wolf } 823797ac58cSKevin Wolf break; 824797ac58cSKevin Wolf case 'q': 825dc38852aSEric Blake qflag = true; 826797ac58cSKevin Wolf break; 827797ac58cSKevin Wolf case 'v': 828dc38852aSEric Blake vflag = true; 829797ac58cSKevin Wolf break; 830797ac58cSKevin Wolf default: 831c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 832797ac58cSKevin Wolf } 833797ac58cSKevin Wolf } 834797ac58cSKevin Wolf 835797ac58cSKevin Wolf if (optind > argc - 2) { 836c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 837797ac58cSKevin Wolf } 838797ac58cSKevin Wolf 839797ac58cSKevin Wolf 840797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 841797ac58cSKevin Wolf if (offset < 0) { 842a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 843797ac58cSKevin Wolf return 0; 844797ac58cSKevin Wolf } 845797ac58cSKevin Wolf optind++; 846797ac58cSKevin Wolf 847797ac58cSKevin Wolf nr_iov = argc - optind; 8484c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 849797ac58cSKevin Wolf if (buf == NULL) { 850797ac58cSKevin Wolf return 0; 851797ac58cSKevin Wolf } 852797ac58cSKevin Wolf 853797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8544c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 855797ac58cSKevin Wolf gettimeofday(&t2, NULL); 856797ac58cSKevin Wolf 857797ac58cSKevin Wolf if (cnt < 0) { 858797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 859797ac58cSKevin Wolf goto out; 860797ac58cSKevin Wolf } 861797ac58cSKevin Wolf 862797ac58cSKevin Wolf if (Pflag) { 863797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 864797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 865797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 866797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 867797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 868797ac58cSKevin Wolf } 869797ac58cSKevin Wolf g_free(cmp_buf); 870797ac58cSKevin Wolf } 871797ac58cSKevin Wolf 872797ac58cSKevin Wolf if (qflag) { 873797ac58cSKevin Wolf goto out; 874797ac58cSKevin Wolf } 875797ac58cSKevin Wolf 876797ac58cSKevin Wolf if (vflag) { 877797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 878797ac58cSKevin Wolf } 879797ac58cSKevin Wolf 880797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 881797ac58cSKevin Wolf t2 = tsub(t2, t1); 882797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 883797ac58cSKevin Wolf 884797ac58cSKevin Wolf out: 885797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 886797ac58cSKevin Wolf qemu_io_free(buf); 887797ac58cSKevin Wolf return 0; 888797ac58cSKevin Wolf } 889797ac58cSKevin Wolf 890797ac58cSKevin Wolf static void write_help(void) 891797ac58cSKevin Wolf { 892797ac58cSKevin Wolf printf( 893797ac58cSKevin Wolf "\n" 894797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 895797ac58cSKevin Wolf "\n" 896797ac58cSKevin Wolf " Example:\n" 897797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 898797ac58cSKevin Wolf "\n" 899797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 900797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 901797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9024c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 903770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 904093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 905797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 906797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 907797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 908c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 909d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 910797ac58cSKevin Wolf "\n"); 911797ac58cSKevin Wolf } 912797ac58cSKevin Wolf 9134c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 914797ac58cSKevin Wolf 915797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 916797ac58cSKevin Wolf .name = "write", 917797ac58cSKevin Wolf .altname = "w", 918797ac58cSKevin Wolf .cfunc = write_f, 919797ac58cSKevin Wolf .argmin = 2, 920797ac58cSKevin Wolf .argmax = -1, 921c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 922797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 923797ac58cSKevin Wolf .help = write_help, 924797ac58cSKevin Wolf }; 925797ac58cSKevin Wolf 9264c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 927797ac58cSKevin Wolf { 928797ac58cSKevin Wolf struct timeval t1, t2; 929093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 930dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 931770e0e0eSEric Blake int flags = 0; 932797ac58cSKevin Wolf int c, cnt; 933797ac58cSKevin Wolf char *buf = NULL; 934797ac58cSKevin Wolf int64_t offset; 9359b0beaf3SJohn Snow int64_t count; 936797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9379b0beaf3SJohn Snow int64_t total = 0; 938797ac58cSKevin Wolf int pattern = 0xcd; 939797ac58cSKevin Wolf 940c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 941797ac58cSKevin Wolf switch (c) { 942797ac58cSKevin Wolf case 'b': 943dc38852aSEric Blake bflag = true; 944797ac58cSKevin Wolf break; 945797ac58cSKevin Wolf case 'c': 946dc38852aSEric Blake cflag = true; 947797ac58cSKevin Wolf break; 948797ac58cSKevin Wolf case 'C': 949dc38852aSEric Blake Cflag = true; 950797ac58cSKevin Wolf break; 951770e0e0eSEric Blake case 'f': 952770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 953770e0e0eSEric Blake break; 954797ac58cSKevin Wolf case 'p': 955093ea232SEric Blake /* Ignored for backwards compatibility */ 956797ac58cSKevin Wolf break; 957797ac58cSKevin Wolf case 'P': 958dc38852aSEric Blake Pflag = true; 959797ac58cSKevin Wolf pattern = parse_pattern(optarg); 960797ac58cSKevin Wolf if (pattern < 0) { 961797ac58cSKevin Wolf return 0; 962797ac58cSKevin Wolf } 963797ac58cSKevin Wolf break; 964797ac58cSKevin Wolf case 'q': 965dc38852aSEric Blake qflag = true; 966797ac58cSKevin Wolf break; 967c2e001ccSEric Blake case 'u': 968c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 969c2e001ccSEric Blake break; 970797ac58cSKevin Wolf case 'z': 971dc38852aSEric Blake zflag = true; 972797ac58cSKevin Wolf break; 973797ac58cSKevin Wolf default: 974c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 975797ac58cSKevin Wolf } 976797ac58cSKevin Wolf } 977797ac58cSKevin Wolf 978797ac58cSKevin Wolf if (optind != argc - 2) { 979c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 980797ac58cSKevin Wolf } 981797ac58cSKevin Wolf 982093ea232SEric Blake if (bflag && zflag) { 983093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 984797ac58cSKevin Wolf return 0; 985797ac58cSKevin Wolf } 986797ac58cSKevin Wolf 987770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 988770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 989770e0e0eSEric Blake return 0; 990770e0e0eSEric Blake } 991770e0e0eSEric Blake 992c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 993c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 994c2e001ccSEric Blake return 0; 995c2e001ccSEric Blake } 996c2e001ccSEric Blake 997797ac58cSKevin Wolf if (zflag && Pflag) { 998797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 999797ac58cSKevin Wolf return 0; 1000797ac58cSKevin Wolf } 1001797ac58cSKevin Wolf 1002797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1003797ac58cSKevin Wolf if (offset < 0) { 1004a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1005797ac58cSKevin Wolf return 0; 1006797ac58cSKevin Wolf } 1007797ac58cSKevin Wolf 1008797ac58cSKevin Wolf optind++; 1009797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1010797ac58cSKevin Wolf if (count < 0) { 1011a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1012797ac58cSKevin Wolf return 0; 1013*3026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10149b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 1015*3026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 10169b0beaf3SJohn Snow return 0; 1017797ac58cSKevin Wolf } 1018797ac58cSKevin Wolf 1019093ea232SEric Blake if (bflag || cflag) { 1020797ac58cSKevin Wolf if (offset & 0x1ff) { 1021797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1022797ac58cSKevin Wolf offset); 1023797ac58cSKevin Wolf return 0; 1024797ac58cSKevin Wolf } 1025797ac58cSKevin Wolf 1026797ac58cSKevin Wolf if (count & 0x1ff) { 10279b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 1028797ac58cSKevin Wolf count); 1029797ac58cSKevin Wolf return 0; 1030797ac58cSKevin Wolf } 1031797ac58cSKevin Wolf } 1032797ac58cSKevin Wolf 1033797ac58cSKevin Wolf if (!zflag) { 10344c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1035797ac58cSKevin Wolf } 1036797ac58cSKevin Wolf 1037797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10387b3f9712SEric Blake if (bflag) { 10394c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1040797ac58cSKevin Wolf } else if (zflag) { 1041d004bd52SEric Blake cnt = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1042797ac58cSKevin Wolf } else if (cflag) { 10434c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1044797ac58cSKevin Wolf } else { 1045770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1046797ac58cSKevin Wolf } 1047797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1048797ac58cSKevin Wolf 1049797ac58cSKevin Wolf if (cnt < 0) { 1050797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1051797ac58cSKevin Wolf goto out; 1052797ac58cSKevin Wolf } 1053797ac58cSKevin Wolf 1054797ac58cSKevin Wolf if (qflag) { 1055797ac58cSKevin Wolf goto out; 1056797ac58cSKevin Wolf } 1057797ac58cSKevin Wolf 1058797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1059797ac58cSKevin Wolf t2 = tsub(t2, t1); 1060797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1061797ac58cSKevin Wolf 1062797ac58cSKevin Wolf out: 1063797ac58cSKevin Wolf if (!zflag) { 1064797ac58cSKevin Wolf qemu_io_free(buf); 1065797ac58cSKevin Wolf } 1066797ac58cSKevin Wolf 1067797ac58cSKevin Wolf return 0; 1068797ac58cSKevin Wolf } 1069797ac58cSKevin Wolf 1070797ac58cSKevin Wolf static void 1071797ac58cSKevin Wolf writev_help(void) 1072797ac58cSKevin Wolf { 1073797ac58cSKevin Wolf printf( 1074797ac58cSKevin Wolf "\n" 1075797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1076797ac58cSKevin Wolf "\n" 1077797ac58cSKevin Wolf " Example:\n" 10786e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1079797ac58cSKevin Wolf "\n" 1080797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1081797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1082797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1083797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1084770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1085797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1086797ac58cSKevin Wolf "\n"); 1087797ac58cSKevin Wolf } 1088797ac58cSKevin Wolf 10894c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1090797ac58cSKevin Wolf 1091797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1092797ac58cSKevin Wolf .name = "writev", 1093797ac58cSKevin Wolf .cfunc = writev_f, 1094797ac58cSKevin Wolf .argmin = 2, 1095797ac58cSKevin Wolf .argmax = -1, 1096770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1097797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1098797ac58cSKevin Wolf .help = writev_help, 1099797ac58cSKevin Wolf }; 1100797ac58cSKevin Wolf 11014c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1102797ac58cSKevin Wolf { 1103797ac58cSKevin Wolf struct timeval t1, t2; 1104dc38852aSEric Blake bool Cflag = false, qflag = false; 1105770e0e0eSEric Blake int flags = 0; 1106797ac58cSKevin Wolf int c, cnt; 1107797ac58cSKevin Wolf char *buf; 1108797ac58cSKevin Wolf int64_t offset; 1109797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1110797ac58cSKevin Wolf int total = 0; 1111797ac58cSKevin Wolf int nr_iov; 1112797ac58cSKevin Wolf int pattern = 0xcd; 1113797ac58cSKevin Wolf QEMUIOVector qiov; 1114797ac58cSKevin Wolf 11154ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1116797ac58cSKevin Wolf switch (c) { 1117797ac58cSKevin Wolf case 'C': 1118dc38852aSEric Blake Cflag = true; 1119797ac58cSKevin Wolf break; 1120770e0e0eSEric Blake case 'f': 1121770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1122770e0e0eSEric Blake break; 1123797ac58cSKevin Wolf case 'q': 1124dc38852aSEric Blake qflag = true; 1125797ac58cSKevin Wolf break; 1126797ac58cSKevin Wolf case 'P': 1127797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1128797ac58cSKevin Wolf if (pattern < 0) { 1129797ac58cSKevin Wolf return 0; 1130797ac58cSKevin Wolf } 1131797ac58cSKevin Wolf break; 1132797ac58cSKevin Wolf default: 1133c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1134797ac58cSKevin Wolf } 1135797ac58cSKevin Wolf } 1136797ac58cSKevin Wolf 1137797ac58cSKevin Wolf if (optind > argc - 2) { 1138c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1139797ac58cSKevin Wolf } 1140797ac58cSKevin Wolf 1141797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1142797ac58cSKevin Wolf if (offset < 0) { 1143a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1144797ac58cSKevin Wolf return 0; 1145797ac58cSKevin Wolf } 1146797ac58cSKevin Wolf optind++; 1147797ac58cSKevin Wolf 1148797ac58cSKevin Wolf nr_iov = argc - optind; 11494c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1150797ac58cSKevin Wolf if (buf == NULL) { 1151797ac58cSKevin Wolf return 0; 1152797ac58cSKevin Wolf } 1153797ac58cSKevin Wolf 1154797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1155770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1156797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1157797ac58cSKevin Wolf 1158797ac58cSKevin Wolf if (cnt < 0) { 1159797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1160797ac58cSKevin Wolf goto out; 1161797ac58cSKevin Wolf } 1162797ac58cSKevin Wolf 1163797ac58cSKevin Wolf if (qflag) { 1164797ac58cSKevin Wolf goto out; 1165797ac58cSKevin Wolf } 1166797ac58cSKevin Wolf 1167797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1168797ac58cSKevin Wolf t2 = tsub(t2, t1); 1169797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1170797ac58cSKevin Wolf out: 1171797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1172797ac58cSKevin Wolf qemu_io_free(buf); 1173797ac58cSKevin Wolf return 0; 1174797ac58cSKevin Wolf } 1175797ac58cSKevin Wolf 1176797ac58cSKevin Wolf struct aio_ctx { 11774c7b7e9bSMax Reitz BlockBackend *blk; 1178797ac58cSKevin Wolf QEMUIOVector qiov; 1179797ac58cSKevin Wolf int64_t offset; 1180797ac58cSKevin Wolf char *buf; 1181dc38852aSEric Blake bool qflag; 1182dc38852aSEric Blake bool vflag; 1183dc38852aSEric Blake bool Cflag; 1184dc38852aSEric Blake bool Pflag; 1185dc38852aSEric Blake bool zflag; 1186a91f9584SFam Zheng BlockAcctCookie acct; 1187797ac58cSKevin Wolf int pattern; 1188797ac58cSKevin Wolf struct timeval t1; 1189797ac58cSKevin Wolf }; 1190797ac58cSKevin Wolf 1191797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1192797ac58cSKevin Wolf { 1193797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1194797ac58cSKevin Wolf struct timeval t2; 1195797ac58cSKevin Wolf 1196797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1197797ac58cSKevin Wolf 1198797ac58cSKevin Wolf 1199797ac58cSKevin Wolf if (ret < 0) { 1200797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1201556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1202797ac58cSKevin Wolf goto out; 1203797ac58cSKevin Wolf } 1204797ac58cSKevin Wolf 12054c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1206a91f9584SFam Zheng 1207797ac58cSKevin Wolf if (ctx->qflag) { 1208797ac58cSKevin Wolf goto out; 1209797ac58cSKevin Wolf } 1210797ac58cSKevin Wolf 1211797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1212797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1213797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1214797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1215797ac58cSKevin Wolf out: 12165ceb7765SKevin Wolf if (!ctx->zflag) { 1217797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1218797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12195ceb7765SKevin Wolf } 1220797ac58cSKevin Wolf g_free(ctx); 1221797ac58cSKevin Wolf } 1222797ac58cSKevin Wolf 1223797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1224797ac58cSKevin Wolf { 1225797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1226797ac58cSKevin Wolf struct timeval t2; 1227797ac58cSKevin Wolf 1228797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1229797ac58cSKevin Wolf 1230797ac58cSKevin Wolf if (ret < 0) { 1231797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1232556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1233797ac58cSKevin Wolf goto out; 1234797ac58cSKevin Wolf } 1235797ac58cSKevin Wolf 1236797ac58cSKevin Wolf if (ctx->Pflag) { 1237797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1238797ac58cSKevin Wolf 1239797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1240797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1241797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1242797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1243797ac58cSKevin Wolf } 1244797ac58cSKevin Wolf g_free(cmp_buf); 1245797ac58cSKevin Wolf } 1246797ac58cSKevin Wolf 12474c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1248a91f9584SFam Zheng 1249797ac58cSKevin Wolf if (ctx->qflag) { 1250797ac58cSKevin Wolf goto out; 1251797ac58cSKevin Wolf } 1252797ac58cSKevin Wolf 1253797ac58cSKevin Wolf if (ctx->vflag) { 1254797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1255797ac58cSKevin Wolf } 1256797ac58cSKevin Wolf 1257797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1258797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1259797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1260797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1261797ac58cSKevin Wolf out: 1262797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1263797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1264797ac58cSKevin Wolf g_free(ctx); 1265797ac58cSKevin Wolf } 1266797ac58cSKevin Wolf 1267797ac58cSKevin Wolf static void aio_read_help(void) 1268797ac58cSKevin Wolf { 1269797ac58cSKevin Wolf printf( 1270797ac58cSKevin Wolf "\n" 1271797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1272797ac58cSKevin Wolf "\n" 1273797ac58cSKevin Wolf " Example:\n" 1274797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1275797ac58cSKevin Wolf "\n" 1276797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1277797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1278797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1279797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1280797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1281797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 128237546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1283797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1284797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1285797ac58cSKevin Wolf "\n"); 1286797ac58cSKevin Wolf } 1287797ac58cSKevin Wolf 12884c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1289797ac58cSKevin Wolf 1290797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1291797ac58cSKevin Wolf .name = "aio_read", 1292797ac58cSKevin Wolf .cfunc = aio_read_f, 1293797ac58cSKevin Wolf .argmin = 2, 1294797ac58cSKevin Wolf .argmax = -1, 129537546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1296797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1297797ac58cSKevin Wolf .help = aio_read_help, 1298797ac58cSKevin Wolf }; 1299797ac58cSKevin Wolf 13004c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1301797ac58cSKevin Wolf { 1302797ac58cSKevin Wolf int nr_iov, c; 1303797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1304797ac58cSKevin Wolf 13054c7b7e9bSMax Reitz ctx->blk = blk; 130637546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1307797ac58cSKevin Wolf switch (c) { 1308797ac58cSKevin Wolf case 'C': 1309dc38852aSEric Blake ctx->Cflag = true; 1310797ac58cSKevin Wolf break; 1311797ac58cSKevin Wolf case 'P': 1312dc38852aSEric Blake ctx->Pflag = true; 1313797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1314797ac58cSKevin Wolf if (ctx->pattern < 0) { 1315797ac58cSKevin Wolf g_free(ctx); 1316797ac58cSKevin Wolf return 0; 1317797ac58cSKevin Wolf } 1318797ac58cSKevin Wolf break; 131937546ff2SEric Blake case 'i': 132037546ff2SEric Blake printf("injecting invalid read request\n"); 132137546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 132237546ff2SEric Blake g_free(ctx); 132337546ff2SEric Blake return 0; 1324797ac58cSKevin Wolf case 'q': 1325dc38852aSEric Blake ctx->qflag = true; 1326797ac58cSKevin Wolf break; 1327797ac58cSKevin Wolf case 'v': 1328dc38852aSEric Blake ctx->vflag = true; 1329797ac58cSKevin Wolf break; 1330797ac58cSKevin Wolf default: 1331797ac58cSKevin Wolf g_free(ctx); 1332c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1333797ac58cSKevin Wolf } 1334797ac58cSKevin Wolf } 1335797ac58cSKevin Wolf 1336797ac58cSKevin Wolf if (optind > argc - 2) { 1337797ac58cSKevin Wolf g_free(ctx); 1338c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1339797ac58cSKevin Wolf } 1340797ac58cSKevin Wolf 1341797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1342797ac58cSKevin Wolf if (ctx->offset < 0) { 1343a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1344797ac58cSKevin Wolf g_free(ctx); 1345797ac58cSKevin Wolf return 0; 1346797ac58cSKevin Wolf } 1347797ac58cSKevin Wolf optind++; 1348797ac58cSKevin Wolf 1349797ac58cSKevin Wolf nr_iov = argc - optind; 13504c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1351797ac58cSKevin Wolf if (ctx->buf == NULL) { 1352556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1353797ac58cSKevin Wolf g_free(ctx); 1354797ac58cSKevin Wolf return 0; 1355797ac58cSKevin Wolf } 1356797ac58cSKevin Wolf 1357797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 13584c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 13594c7b7e9bSMax Reitz BLOCK_ACCT_READ); 13607b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1361797ac58cSKevin Wolf return 0; 1362797ac58cSKevin Wolf } 1363797ac58cSKevin Wolf 1364797ac58cSKevin Wolf static void aio_write_help(void) 1365797ac58cSKevin Wolf { 1366797ac58cSKevin Wolf printf( 1367797ac58cSKevin Wolf "\n" 1368797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1369797ac58cSKevin Wolf " from multiple buffers\n" 1370797ac58cSKevin Wolf "\n" 1371797ac58cSKevin Wolf " Example:\n" 1372797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1373797ac58cSKevin Wolf "\n" 1374797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1375797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1376797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1377797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1378797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1379797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1380770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 138137546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1382797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1383c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1384d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1385797ac58cSKevin Wolf "\n"); 1386797ac58cSKevin Wolf } 1387797ac58cSKevin Wolf 13884c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1389797ac58cSKevin Wolf 1390797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1391797ac58cSKevin Wolf .name = "aio_write", 1392797ac58cSKevin Wolf .cfunc = aio_write_f, 1393797ac58cSKevin Wolf .argmin = 2, 1394797ac58cSKevin Wolf .argmax = -1, 139537546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1396797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1397797ac58cSKevin Wolf .help = aio_write_help, 1398797ac58cSKevin Wolf }; 1399797ac58cSKevin Wolf 14004c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1401797ac58cSKevin Wolf { 1402797ac58cSKevin Wolf int nr_iov, c; 1403797ac58cSKevin Wolf int pattern = 0xcd; 1404797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1405770e0e0eSEric Blake int flags = 0; 1406797ac58cSKevin Wolf 14074c7b7e9bSMax Reitz ctx->blk = blk; 140837546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1409797ac58cSKevin Wolf switch (c) { 1410797ac58cSKevin Wolf case 'C': 1411dc38852aSEric Blake ctx->Cflag = true; 1412797ac58cSKevin Wolf break; 1413770e0e0eSEric Blake case 'f': 1414770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1415770e0e0eSEric Blake break; 1416797ac58cSKevin Wolf case 'q': 1417dc38852aSEric Blake ctx->qflag = true; 1418797ac58cSKevin Wolf break; 1419c2e001ccSEric Blake case 'u': 1420c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1421c2e001ccSEric Blake break; 1422797ac58cSKevin Wolf case 'P': 1423797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1424797ac58cSKevin Wolf if (pattern < 0) { 1425797ac58cSKevin Wolf g_free(ctx); 1426797ac58cSKevin Wolf return 0; 1427797ac58cSKevin Wolf } 1428797ac58cSKevin Wolf break; 142937546ff2SEric Blake case 'i': 143037546ff2SEric Blake printf("injecting invalid write request\n"); 143137546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 143237546ff2SEric Blake g_free(ctx); 143337546ff2SEric Blake return 0; 14345ceb7765SKevin Wolf case 'z': 1435dc38852aSEric Blake ctx->zflag = true; 14365ceb7765SKevin Wolf break; 1437797ac58cSKevin Wolf default: 1438797ac58cSKevin Wolf g_free(ctx); 1439c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1440797ac58cSKevin Wolf } 1441797ac58cSKevin Wolf } 1442797ac58cSKevin Wolf 1443797ac58cSKevin Wolf if (optind > argc - 2) { 1444797ac58cSKevin Wolf g_free(ctx); 1445c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1446797ac58cSKevin Wolf } 1447797ac58cSKevin Wolf 14485ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 14495ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 14505ceb7765SKevin Wolf g_free(ctx); 14515ceb7765SKevin Wolf return 0; 14525ceb7765SKevin Wolf } 14535ceb7765SKevin Wolf 1454c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1455c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 14564ca1d340SEric Blake g_free(ctx); 1457c2e001ccSEric Blake return 0; 1458c2e001ccSEric Blake } 1459c2e001ccSEric Blake 14605ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 14615ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 14625ceb7765SKevin Wolf g_free(ctx); 14635ceb7765SKevin Wolf return 0; 14645ceb7765SKevin Wolf } 14655ceb7765SKevin Wolf 1466797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1467797ac58cSKevin Wolf if (ctx->offset < 0) { 1468a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1469797ac58cSKevin Wolf g_free(ctx); 1470797ac58cSKevin Wolf return 0; 1471797ac58cSKevin Wolf } 1472797ac58cSKevin Wolf optind++; 1473797ac58cSKevin Wolf 14745ceb7765SKevin Wolf if (ctx->zflag) { 14755ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 14765ceb7765SKevin Wolf if (count < 0) { 14775ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 14780e01b76eSKevin Wolf g_free(ctx); 14795ceb7765SKevin Wolf return 0; 14805ceb7765SKevin Wolf } 14815ceb7765SKevin Wolf 14825ceb7765SKevin Wolf ctx->qiov.size = count; 1483d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1484770e0e0eSEric Blake ctx); 14855ceb7765SKevin Wolf } else { 1486797ac58cSKevin Wolf nr_iov = argc - optind; 14875ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 14885ceb7765SKevin Wolf pattern); 1489797ac58cSKevin Wolf if (ctx->buf == NULL) { 1490556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1491797ac58cSKevin Wolf g_free(ctx); 1492797ac58cSKevin Wolf return 0; 1493797ac58cSKevin Wolf } 1494797ac58cSKevin Wolf 1495797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 14964c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14974c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 14985ceb7765SKevin Wolf 1499770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1500770e0e0eSEric Blake ctx); 15015ceb7765SKevin Wolf } 1502797ac58cSKevin Wolf return 0; 1503797ac58cSKevin Wolf } 1504797ac58cSKevin Wolf 15054c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1506797ac58cSKevin Wolf { 1507556c2b60SAlberto Garcia BlockAcctCookie cookie; 1508556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15094c7b7e9bSMax Reitz blk_drain_all(); 1510556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1511797ac58cSKevin Wolf return 0; 1512797ac58cSKevin Wolf } 1513797ac58cSKevin Wolf 1514797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1515797ac58cSKevin Wolf .name = "aio_flush", 1516797ac58cSKevin Wolf .cfunc = aio_flush_f, 1517797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1518797ac58cSKevin Wolf }; 1519797ac58cSKevin Wolf 15204c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1521797ac58cSKevin Wolf { 15224c7b7e9bSMax Reitz blk_flush(blk); 1523797ac58cSKevin Wolf return 0; 1524797ac58cSKevin Wolf } 1525797ac58cSKevin Wolf 1526797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1527797ac58cSKevin Wolf .name = "flush", 1528797ac58cSKevin Wolf .altname = "f", 1529797ac58cSKevin Wolf .cfunc = flush_f, 1530797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1531797ac58cSKevin Wolf }; 1532797ac58cSKevin Wolf 15334c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1534797ac58cSKevin Wolf { 1535797ac58cSKevin Wolf int64_t offset; 1536797ac58cSKevin Wolf int ret; 1537797ac58cSKevin Wolf 1538797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1539797ac58cSKevin Wolf if (offset < 0) { 1540a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1541797ac58cSKevin Wolf return 0; 1542797ac58cSKevin Wolf } 1543797ac58cSKevin Wolf 15444c7b7e9bSMax Reitz ret = blk_truncate(blk, offset); 1545797ac58cSKevin Wolf if (ret < 0) { 1546797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1547797ac58cSKevin Wolf return 0; 1548797ac58cSKevin Wolf } 1549797ac58cSKevin Wolf 1550797ac58cSKevin Wolf return 0; 1551797ac58cSKevin Wolf } 1552797ac58cSKevin Wolf 1553797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1554797ac58cSKevin Wolf .name = "truncate", 1555797ac58cSKevin Wolf .altname = "t", 1556797ac58cSKevin Wolf .cfunc = truncate_f, 1557797ac58cSKevin Wolf .argmin = 1, 1558797ac58cSKevin Wolf .argmax = 1, 1559797ac58cSKevin Wolf .args = "off", 1560797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1561797ac58cSKevin Wolf }; 1562797ac58cSKevin Wolf 15634c7b7e9bSMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1564797ac58cSKevin Wolf { 1565797ac58cSKevin Wolf int64_t size; 1566797ac58cSKevin Wolf char s1[64]; 1567797ac58cSKevin Wolf 15684c7b7e9bSMax Reitz size = blk_getlength(blk); 1569797ac58cSKevin Wolf if (size < 0) { 1570797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1571797ac58cSKevin Wolf return 0; 1572797ac58cSKevin Wolf } 1573797ac58cSKevin Wolf 1574797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1575797ac58cSKevin Wolf printf("%s\n", s1); 1576797ac58cSKevin Wolf return 0; 1577797ac58cSKevin Wolf } 1578797ac58cSKevin Wolf 1579797ac58cSKevin Wolf 1580797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1581797ac58cSKevin Wolf .name = "length", 1582797ac58cSKevin Wolf .altname = "l", 1583797ac58cSKevin Wolf .cfunc = length_f, 1584797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1585797ac58cSKevin Wolf }; 1586797ac58cSKevin Wolf 1587797ac58cSKevin Wolf 15884c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1589797ac58cSKevin Wolf { 15904c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1591797ac58cSKevin Wolf BlockDriverInfo bdi; 1592a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1593797ac58cSKevin Wolf char s1[64], s2[64]; 1594797ac58cSKevin Wolf int ret; 1595797ac58cSKevin Wolf 1596797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1597797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1598797ac58cSKevin Wolf } 1599797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1600797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1601797ac58cSKevin Wolf } 1602797ac58cSKevin Wolf 1603797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1604797ac58cSKevin Wolf if (ret) { 1605797ac58cSKevin Wolf return 0; 1606797ac58cSKevin Wolf } 1607797ac58cSKevin Wolf 1608797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1609797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1610797ac58cSKevin Wolf 1611797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1612797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1613797ac58cSKevin Wolf 1614a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1615a8d8ecb7SMax Reitz if (spec_info) { 1616a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1617a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1618a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1619a8d8ecb7SMax Reitz } 1620a8d8ecb7SMax Reitz 1621797ac58cSKevin Wolf return 0; 1622797ac58cSKevin Wolf } 1623797ac58cSKevin Wolf 1624797ac58cSKevin Wolf 1625797ac58cSKevin Wolf 1626797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1627797ac58cSKevin Wolf .name = "info", 1628797ac58cSKevin Wolf .altname = "i", 1629797ac58cSKevin Wolf .cfunc = info_f, 1630797ac58cSKevin Wolf .oneline = "prints information about the current file", 1631797ac58cSKevin Wolf }; 1632797ac58cSKevin Wolf 1633797ac58cSKevin Wolf static void discard_help(void) 1634797ac58cSKevin Wolf { 1635797ac58cSKevin Wolf printf( 1636797ac58cSKevin Wolf "\n" 1637797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1638797ac58cSKevin Wolf "\n" 1639797ac58cSKevin Wolf " Example:\n" 1640797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1641797ac58cSKevin Wolf "\n" 1642797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1643797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1644797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1645797ac58cSKevin Wolf "\n"); 1646797ac58cSKevin Wolf } 1647797ac58cSKevin Wolf 16484c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1649797ac58cSKevin Wolf 1650797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1651797ac58cSKevin Wolf .name = "discard", 1652797ac58cSKevin Wolf .altname = "d", 1653797ac58cSKevin Wolf .cfunc = discard_f, 1654797ac58cSKevin Wolf .argmin = 2, 1655797ac58cSKevin Wolf .argmax = -1, 1656797ac58cSKevin Wolf .args = "[-Cq] off len", 1657797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1658797ac58cSKevin Wolf .help = discard_help, 1659797ac58cSKevin Wolf }; 1660797ac58cSKevin Wolf 16614c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1662797ac58cSKevin Wolf { 1663797ac58cSKevin Wolf struct timeval t1, t2; 1664dc38852aSEric Blake bool Cflag = false, qflag = false; 1665797ac58cSKevin Wolf int c, ret; 16669b0beaf3SJohn Snow int64_t offset, count; 1667797ac58cSKevin Wolf 1668b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1669797ac58cSKevin Wolf switch (c) { 1670797ac58cSKevin Wolf case 'C': 1671dc38852aSEric Blake Cflag = true; 1672797ac58cSKevin Wolf break; 1673797ac58cSKevin Wolf case 'q': 1674dc38852aSEric Blake qflag = true; 1675797ac58cSKevin Wolf break; 1676797ac58cSKevin Wolf default: 1677c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1678797ac58cSKevin Wolf } 1679797ac58cSKevin Wolf } 1680797ac58cSKevin Wolf 1681797ac58cSKevin Wolf if (optind != argc - 2) { 1682c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1683797ac58cSKevin Wolf } 1684797ac58cSKevin Wolf 1685797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1686797ac58cSKevin Wolf if (offset < 0) { 1687a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1688797ac58cSKevin Wolf return 0; 1689797ac58cSKevin Wolf } 1690797ac58cSKevin Wolf 1691797ac58cSKevin Wolf optind++; 1692797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1693797ac58cSKevin Wolf if (count < 0) { 1694a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1695797ac58cSKevin Wolf return 0; 1696a3674679SMax Reitz } else if (count >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) { 16979b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 1698a3674679SMax Reitz (uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS, 16999b0beaf3SJohn Snow argv[optind]); 17009b0beaf3SJohn Snow return 0; 1701797ac58cSKevin Wolf } 1702797ac58cSKevin Wolf 1703797ac58cSKevin Wolf gettimeofday(&t1, NULL); 17041c6c4bb7SEric Blake ret = blk_pdiscard(blk, offset, count); 1705797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1706797ac58cSKevin Wolf 1707797ac58cSKevin Wolf if (ret < 0) { 1708797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1709797ac58cSKevin Wolf goto out; 1710797ac58cSKevin Wolf } 1711797ac58cSKevin Wolf 1712797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1713797ac58cSKevin Wolf if (!qflag) { 1714797ac58cSKevin Wolf t2 = tsub(t2, t1); 1715797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1716797ac58cSKevin Wolf } 1717797ac58cSKevin Wolf 1718797ac58cSKevin Wolf out: 1719797ac58cSKevin Wolf return 0; 1720797ac58cSKevin Wolf } 1721797ac58cSKevin Wolf 17224c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1723797ac58cSKevin Wolf { 17244c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 17259b0beaf3SJohn Snow int64_t offset, sector_num, nb_sectors, remaining; 1726797ac58cSKevin Wolf char s1[64]; 17279b0beaf3SJohn Snow int num, ret; 17289b0beaf3SJohn Snow int64_t sum_alloc; 1729797ac58cSKevin Wolf 1730797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1731797ac58cSKevin Wolf if (offset < 0) { 1732a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1733797ac58cSKevin Wolf return 0; 1734797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1735797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1736797ac58cSKevin Wolf offset); 1737797ac58cSKevin Wolf return 0; 1738797ac58cSKevin Wolf } 1739797ac58cSKevin Wolf 1740797ac58cSKevin Wolf if (argc == 3) { 1741797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1742797ac58cSKevin Wolf if (nb_sectors < 0) { 1743a9ecfa00SJohn Snow print_cvtnum_err(nb_sectors, argv[2]); 1744797ac58cSKevin Wolf return 0; 17459b0beaf3SJohn Snow } else if (nb_sectors > INT_MAX) { 17469b0beaf3SJohn Snow printf("length argument cannot exceed %d, given %s\n", 17479b0beaf3SJohn Snow INT_MAX, argv[2]); 17489b0beaf3SJohn Snow return 0; 1749797ac58cSKevin Wolf } 1750797ac58cSKevin Wolf } else { 1751797ac58cSKevin Wolf nb_sectors = 1; 1752797ac58cSKevin Wolf } 1753797ac58cSKevin Wolf 1754797ac58cSKevin Wolf remaining = nb_sectors; 1755797ac58cSKevin Wolf sum_alloc = 0; 1756797ac58cSKevin Wolf sector_num = offset >> 9; 1757797ac58cSKevin Wolf while (remaining) { 1758797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1759d663640cSPaolo Bonzini if (ret < 0) { 1760d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1761d663640cSPaolo Bonzini return 0; 1762d663640cSPaolo Bonzini } 1763797ac58cSKevin Wolf sector_num += num; 1764797ac58cSKevin Wolf remaining -= num; 1765797ac58cSKevin Wolf if (ret) { 1766797ac58cSKevin Wolf sum_alloc += num; 1767797ac58cSKevin Wolf } 1768797ac58cSKevin Wolf if (num == 0) { 1769797ac58cSKevin Wolf nb_sectors -= remaining; 1770797ac58cSKevin Wolf remaining = 0; 1771797ac58cSKevin Wolf } 1772797ac58cSKevin Wolf } 1773797ac58cSKevin Wolf 1774797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1775797ac58cSKevin Wolf 17769b0beaf3SJohn Snow printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n", 1777797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1778797ac58cSKevin Wolf return 0; 1779797ac58cSKevin Wolf } 1780797ac58cSKevin Wolf 1781797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1782797ac58cSKevin Wolf .name = "alloc", 1783797ac58cSKevin Wolf .altname = "a", 1784797ac58cSKevin Wolf .argmin = 1, 1785797ac58cSKevin Wolf .argmax = 2, 1786797ac58cSKevin Wolf .cfunc = alloc_f, 1787797ac58cSKevin Wolf .args = "off [sectors]", 1788797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1789797ac58cSKevin Wolf }; 1790797ac58cSKevin Wolf 1791797ac58cSKevin Wolf 1792797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1793797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1794797ac58cSKevin Wolf { 1795797ac58cSKevin Wolf int num, num_checked; 1796797ac58cSKevin Wolf int ret, firstret; 1797797ac58cSKevin Wolf 1798797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1799797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1800797ac58cSKevin Wolf if (ret < 0) { 1801797ac58cSKevin Wolf return ret; 1802797ac58cSKevin Wolf } 1803797ac58cSKevin Wolf 1804797ac58cSKevin Wolf firstret = ret; 1805797ac58cSKevin Wolf *pnum = num; 1806797ac58cSKevin Wolf 1807797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1808797ac58cSKevin Wolf sector_num += num; 1809797ac58cSKevin Wolf nb_sectors -= num; 1810797ac58cSKevin Wolf 1811797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1812797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 18134b25bbc4SMax Reitz if (ret == firstret && num) { 1814797ac58cSKevin Wolf *pnum += num; 1815797ac58cSKevin Wolf } else { 1816797ac58cSKevin Wolf break; 1817797ac58cSKevin Wolf } 1818797ac58cSKevin Wolf } 1819797ac58cSKevin Wolf 1820797ac58cSKevin Wolf return firstret; 1821797ac58cSKevin Wolf } 1822797ac58cSKevin Wolf 18234c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1824797ac58cSKevin Wolf { 1825797ac58cSKevin Wolf int64_t offset; 18264c7b7e9bSMax Reitz int64_t nb_sectors, total_sectors; 1827797ac58cSKevin Wolf char s1[64]; 1828797ac58cSKevin Wolf int64_t num; 1829797ac58cSKevin Wolf int ret; 1830797ac58cSKevin Wolf const char *retstr; 1831797ac58cSKevin Wolf 1832797ac58cSKevin Wolf offset = 0; 18334c7b7e9bSMax Reitz total_sectors = blk_nb_sectors(blk); 18344c7b7e9bSMax Reitz if (total_sectors < 0) { 18354c7b7e9bSMax Reitz error_report("Failed to query image length: %s", 18364c7b7e9bSMax Reitz strerror(-total_sectors)); 18374c7b7e9bSMax Reitz return 0; 18384c7b7e9bSMax Reitz } 18394c7b7e9bSMax Reitz 18404c7b7e9bSMax Reitz nb_sectors = total_sectors; 1841797ac58cSKevin Wolf 1842797ac58cSKevin Wolf do { 18434c7b7e9bSMax Reitz ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num); 1844797ac58cSKevin Wolf if (ret < 0) { 1845797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1846797ac58cSKevin Wolf return 0; 18474b25bbc4SMax Reitz } else if (!num) { 18484b25bbc4SMax Reitz error_report("Unexpected end of image"); 18494b25bbc4SMax Reitz return 0; 1850797ac58cSKevin Wolf } 1851797ac58cSKevin Wolf 1852797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1853797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 1854797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 1855797ac58cSKevin Wolf "at offset %s (%d)\n", 1856797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 1857797ac58cSKevin Wolf 1858797ac58cSKevin Wolf offset += num; 1859797ac58cSKevin Wolf nb_sectors -= num; 18604c7b7e9bSMax Reitz } while (offset < total_sectors); 1861797ac58cSKevin Wolf 1862797ac58cSKevin Wolf return 0; 1863797ac58cSKevin Wolf } 1864797ac58cSKevin Wolf 1865797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1866797ac58cSKevin Wolf .name = "map", 1867797ac58cSKevin Wolf .argmin = 0, 1868797ac58cSKevin Wolf .argmax = 0, 1869797ac58cSKevin Wolf .cfunc = map_f, 1870797ac58cSKevin Wolf .args = "", 1871797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1872797ac58cSKevin Wolf }; 1873797ac58cSKevin Wolf 18745bbd2e59SKevin Wolf static void reopen_help(void) 18755bbd2e59SKevin Wolf { 18765bbd2e59SKevin Wolf printf( 18775bbd2e59SKevin Wolf "\n" 18785bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 18795bbd2e59SKevin Wolf "\n" 18805bbd2e59SKevin Wolf " Example:\n" 18815bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 18825bbd2e59SKevin Wolf "\n" 18835bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 18845bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 18855bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 18865bbd2e59SKevin Wolf "\n"); 18875bbd2e59SKevin Wolf } 18885bbd2e59SKevin Wolf 18895bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 18905bbd2e59SKevin Wolf 18915bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 18925bbd2e59SKevin Wolf .name = "reopen", 18935bbd2e59SKevin Wolf .merge_lists = true, 18945bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 18955bbd2e59SKevin Wolf .desc = { 18965bbd2e59SKevin Wolf /* no elements => accept any params */ 18975bbd2e59SKevin Wolf { /* end of list */ } 18985bbd2e59SKevin Wolf }, 18995bbd2e59SKevin Wolf }; 19005bbd2e59SKevin Wolf 19015bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19025bbd2e59SKevin Wolf .name = "reopen", 19035bbd2e59SKevin Wolf .argmin = 0, 19045bbd2e59SKevin Wolf .argmax = -1, 19055bbd2e59SKevin Wolf .cfunc = reopen_f, 19065bbd2e59SKevin Wolf .args = "[-r] [-c cache] [-o options]", 19075bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19085bbd2e59SKevin Wolf .help = reopen_help, 19095bbd2e59SKevin Wolf }; 19105bbd2e59SKevin Wolf 19115bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 19125bbd2e59SKevin Wolf { 19135bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19145bbd2e59SKevin Wolf QemuOpts *qopts; 19155bbd2e59SKevin Wolf QDict *opts; 19165bbd2e59SKevin Wolf int c; 19175bbd2e59SKevin Wolf int flags = bs->open_flags; 191819dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 19195bbd2e59SKevin Wolf 19205bbd2e59SKevin Wolf BlockReopenQueue *brq; 19215bbd2e59SKevin Wolf Error *local_err = NULL; 19225bbd2e59SKevin Wolf 19235bbd2e59SKevin Wolf while ((c = getopt(argc, argv, "c:o:r")) != -1) { 19245bbd2e59SKevin Wolf switch (c) { 19255bbd2e59SKevin Wolf case 'c': 192619dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 19275bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 19285bbd2e59SKevin Wolf return 0; 19295bbd2e59SKevin Wolf } 19305bbd2e59SKevin Wolf break; 19315bbd2e59SKevin Wolf case 'o': 19325bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 19335bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19345bbd2e59SKevin Wolf return 0; 19355bbd2e59SKevin Wolf } 19365bbd2e59SKevin Wolf break; 19375bbd2e59SKevin Wolf case 'r': 19385bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 19395bbd2e59SKevin Wolf break; 19405bbd2e59SKevin Wolf default: 19415bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19425bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19435bbd2e59SKevin Wolf } 19445bbd2e59SKevin Wolf } 19455bbd2e59SKevin Wolf 19465bbd2e59SKevin Wolf if (optind != argc) { 19475bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19485bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19495bbd2e59SKevin Wolf } 19505bbd2e59SKevin Wolf 195119dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 195219dbecdcSKevin Wolf blk_get_attached_dev(blk)) 195319dbecdcSKevin Wolf { 195419dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 195519dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 195619dbecdcSKevin Wolf return 0; 195719dbecdcSKevin Wolf } 195819dbecdcSKevin Wolf 19595bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 19605bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 19615bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19625bbd2e59SKevin Wolf 19635bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 1964720150f3SPaolo Bonzini bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err); 19655bbd2e59SKevin Wolf if (local_err) { 19665bbd2e59SKevin Wolf error_report_err(local_err); 196719dbecdcSKevin Wolf } else { 196819dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 19695bbd2e59SKevin Wolf } 19705bbd2e59SKevin Wolf 19715bbd2e59SKevin Wolf return 0; 19725bbd2e59SKevin Wolf } 19735bbd2e59SKevin Wolf 19744c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 1975797ac58cSKevin Wolf { 1976797ac58cSKevin Wolf int ret; 1977797ac58cSKevin Wolf 19784c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 1979797ac58cSKevin Wolf if (ret < 0) { 1980797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 1981797ac58cSKevin Wolf } 1982797ac58cSKevin Wolf 1983797ac58cSKevin Wolf return 0; 1984797ac58cSKevin Wolf } 1985797ac58cSKevin Wolf 19864c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 19874cc70e93SFam Zheng { 19884cc70e93SFam Zheng int ret; 19894cc70e93SFam Zheng 19904c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 19914cc70e93SFam Zheng if (ret < 0) { 19924cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 19934cc70e93SFam Zheng } 19944cc70e93SFam Zheng 19954cc70e93SFam Zheng return 0; 19964cc70e93SFam Zheng } 19974cc70e93SFam Zheng 1998797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 1999797ac58cSKevin Wolf .name = "break", 2000797ac58cSKevin Wolf .argmin = 2, 2001797ac58cSKevin Wolf .argmax = 2, 2002797ac58cSKevin Wolf .cfunc = break_f, 2003797ac58cSKevin Wolf .args = "event tag", 2004797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2005797ac58cSKevin Wolf "request as tag", 2006797ac58cSKevin Wolf }; 2007797ac58cSKevin Wolf 20084cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 20094cc70e93SFam Zheng .name = "remove_break", 20104cc70e93SFam Zheng .argmin = 1, 20114cc70e93SFam Zheng .argmax = 1, 20124cc70e93SFam Zheng .cfunc = remove_break_f, 20134cc70e93SFam Zheng .args = "tag", 20144cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 20154cc70e93SFam Zheng }; 20164cc70e93SFam Zheng 20174c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2018797ac58cSKevin Wolf { 2019797ac58cSKevin Wolf int ret; 2020797ac58cSKevin Wolf 20214c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2022797ac58cSKevin Wolf if (ret < 0) { 2023797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2024797ac58cSKevin Wolf } 2025797ac58cSKevin Wolf 2026797ac58cSKevin Wolf return 0; 2027797ac58cSKevin Wolf } 2028797ac58cSKevin Wolf 2029797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2030797ac58cSKevin Wolf .name = "resume", 2031797ac58cSKevin Wolf .argmin = 1, 2032797ac58cSKevin Wolf .argmax = 1, 2033797ac58cSKevin Wolf .cfunc = resume_f, 2034797ac58cSKevin Wolf .args = "tag", 2035797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2036797ac58cSKevin Wolf }; 2037797ac58cSKevin Wolf 20384c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2039797ac58cSKevin Wolf { 20404c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 20414c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2042797ac58cSKevin Wolf } 2043797ac58cSKevin Wolf 2044797ac58cSKevin Wolf return 0; 2045797ac58cSKevin Wolf } 2046797ac58cSKevin Wolf 2047797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2048797ac58cSKevin Wolf .name = "wait_break", 2049797ac58cSKevin Wolf .argmin = 1, 2050797ac58cSKevin Wolf .argmax = 1, 2051797ac58cSKevin Wolf .cfunc = wait_break_f, 2052797ac58cSKevin Wolf .args = "tag", 2053797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2054797ac58cSKevin Wolf }; 2055797ac58cSKevin Wolf 20564c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2057797ac58cSKevin Wolf { 2058797ac58cSKevin Wolf abort(); 2059797ac58cSKevin Wolf } 2060797ac58cSKevin Wolf 2061797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2062797ac58cSKevin Wolf .name = "abort", 2063797ac58cSKevin Wolf .cfunc = abort_f, 2064797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2065797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2066797ac58cSKevin Wolf }; 2067797ac58cSKevin Wolf 20680e82dc7bSMax Reitz static void sigraise_help(void) 20690e82dc7bSMax Reitz { 20700e82dc7bSMax Reitz printf( 20710e82dc7bSMax Reitz "\n" 20720e82dc7bSMax Reitz " raises the given signal\n" 20730e82dc7bSMax Reitz "\n" 20740e82dc7bSMax Reitz " Example:\n" 20750e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 20760e82dc7bSMax Reitz "\n" 20770e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 20780e82dc7bSMax Reitz " given to sigraise.\n" 20790e82dc7bSMax Reitz "\n", SIGTERM); 20800e82dc7bSMax Reitz } 20810e82dc7bSMax Reitz 20824c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 20830e82dc7bSMax Reitz 20840e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 20850e82dc7bSMax Reitz .name = "sigraise", 20860e82dc7bSMax Reitz .cfunc = sigraise_f, 20870e82dc7bSMax Reitz .argmin = 1, 20880e82dc7bSMax Reitz .argmax = 1, 20890e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 20900e82dc7bSMax Reitz .args = "signal", 20910e82dc7bSMax Reitz .oneline = "raises a signal", 20920e82dc7bSMax Reitz .help = sigraise_help, 20930e82dc7bSMax Reitz }; 20940e82dc7bSMax Reitz 20954c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 20960e82dc7bSMax Reitz { 20979b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 20980e82dc7bSMax Reitz if (sig < 0) { 2099a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 21000e82dc7bSMax Reitz return 0; 21019b0beaf3SJohn Snow } else if (sig > NSIG) { 21029b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 21039b0beaf3SJohn Snow argv[1]); 21049b0beaf3SJohn Snow return 0; 21050e82dc7bSMax Reitz } 21060e82dc7bSMax Reitz 21070e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 21080e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 21090e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 21100e82dc7bSMax Reitz fflush(stdout); 21110e82dc7bSMax Reitz fflush(stderr); 21120e82dc7bSMax Reitz 21130e82dc7bSMax Reitz raise(sig); 21140e82dc7bSMax Reitz return 0; 21150e82dc7bSMax Reitz } 21160e82dc7bSMax Reitz 2117cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2118cd33d02aSKevin Wolf { 2119cd33d02aSKevin Wolf bool *expired = opaque; 2120cd33d02aSKevin Wolf *expired = true; 2121cd33d02aSKevin Wolf } 2122cd33d02aSKevin Wolf 21234c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2124cd33d02aSKevin Wolf { 2125cd33d02aSKevin Wolf char *endptr; 2126cd33d02aSKevin Wolf long ms; 2127cd33d02aSKevin Wolf struct QEMUTimer *timer; 2128cd33d02aSKevin Wolf bool expired = false; 2129cd33d02aSKevin Wolf 2130cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2131cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2132cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2133cd33d02aSKevin Wolf return 0; 2134cd33d02aSKevin Wolf } 2135cd33d02aSKevin Wolf 2136cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2137cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2138cd33d02aSKevin Wolf 2139cd33d02aSKevin Wolf while (!expired) { 2140cd33d02aSKevin Wolf main_loop_wait(false); 2141cd33d02aSKevin Wolf } 2142cd33d02aSKevin Wolf 2143cd33d02aSKevin Wolf timer_free(timer); 2144cd33d02aSKevin Wolf 2145cd33d02aSKevin Wolf return 0; 2146cd33d02aSKevin Wolf } 2147cd33d02aSKevin Wolf 2148cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2149cd33d02aSKevin Wolf .name = "sleep", 2150cd33d02aSKevin Wolf .argmin = 1, 2151cd33d02aSKevin Wolf .argmax = 1, 2152cd33d02aSKevin Wolf .cfunc = sleep_f, 2153cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2154cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2155cd33d02aSKevin Wolf }; 2156cd33d02aSKevin Wolf 2157f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2158f18a834aSKevin Wolf { 2159f18a834aSKevin Wolf if (cmd) { 2160f18a834aSKevin Wolf printf("%s ", cmd); 2161f18a834aSKevin Wolf } else { 2162f18a834aSKevin Wolf printf("%s ", ct->name); 2163f18a834aSKevin Wolf if (ct->altname) { 2164f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2165f18a834aSKevin Wolf } 2166f18a834aSKevin Wolf } 2167f18a834aSKevin Wolf 2168f18a834aSKevin Wolf if (ct->args) { 2169f18a834aSKevin Wolf printf("%s ", ct->args); 2170f18a834aSKevin Wolf } 2171f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2172f18a834aSKevin Wolf } 2173f18a834aSKevin Wolf 2174f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2175f18a834aSKevin Wolf { 2176f18a834aSKevin Wolf help_oneline(cmd, ct); 2177f18a834aSKevin Wolf if (ct->help) { 2178f18a834aSKevin Wolf ct->help(); 2179f18a834aSKevin Wolf } 2180f18a834aSKevin Wolf } 2181f18a834aSKevin Wolf 2182f18a834aSKevin Wolf static void help_all(void) 2183f18a834aSKevin Wolf { 2184f18a834aSKevin Wolf const cmdinfo_t *ct; 2185f18a834aSKevin Wolf 2186f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2187f18a834aSKevin Wolf help_oneline(ct->name, ct); 2188f18a834aSKevin Wolf } 2189f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2190f18a834aSKevin Wolf } 2191f18a834aSKevin Wolf 21924c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2193f18a834aSKevin Wolf { 2194f18a834aSKevin Wolf const cmdinfo_t *ct; 2195f18a834aSKevin Wolf 2196f18a834aSKevin Wolf if (argc == 1) { 2197f18a834aSKevin Wolf help_all(); 2198f18a834aSKevin Wolf return 0; 2199f18a834aSKevin Wolf } 2200f18a834aSKevin Wolf 2201f18a834aSKevin Wolf ct = find_command(argv[1]); 2202f18a834aSKevin Wolf if (ct == NULL) { 2203f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2204f18a834aSKevin Wolf return 0; 2205f18a834aSKevin Wolf } 2206f18a834aSKevin Wolf 2207f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2208f18a834aSKevin Wolf return 0; 2209f18a834aSKevin Wolf } 2210f18a834aSKevin Wolf 2211f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2212f18a834aSKevin Wolf .name = "help", 2213f18a834aSKevin Wolf .altname = "?", 2214f18a834aSKevin Wolf .cfunc = help_f, 2215f18a834aSKevin Wolf .argmin = 0, 2216f18a834aSKevin Wolf .argmax = 1, 2217f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2218f18a834aSKevin Wolf .args = "[command]", 2219f18a834aSKevin Wolf .oneline = "help for one or all commands", 2220f18a834aSKevin Wolf }; 2221f18a834aSKevin Wolf 22224c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2223dd583296SKevin Wolf { 222415afd94aSPaolo Bonzini AioContext *ctx; 2225dd583296SKevin Wolf char *input; 2226dd583296SKevin Wolf const cmdinfo_t *ct; 2227dd583296SKevin Wolf char **v; 2228dd583296SKevin Wolf int c; 2229dd583296SKevin Wolf bool done = false; 2230dd583296SKevin Wolf 2231dd583296SKevin Wolf input = g_strdup(cmd); 2232dd583296SKevin Wolf v = breakline(input, &c); 2233dd583296SKevin Wolf if (c) { 2234dd583296SKevin Wolf ct = find_command(v[0]); 2235dd583296SKevin Wolf if (ct) { 223615afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 223715afd94aSPaolo Bonzini aio_context_acquire(ctx); 22384c7b7e9bSMax Reitz done = command(blk, ct, c, v); 223915afd94aSPaolo Bonzini aio_context_release(ctx); 2240dd583296SKevin Wolf } else { 2241dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2242dd583296SKevin Wolf } 2243dd583296SKevin Wolf } 2244dd583296SKevin Wolf g_free(input); 2245dd583296SKevin Wolf g_free(v); 2246dd583296SKevin Wolf 2247dd583296SKevin Wolf return done; 2248dd583296SKevin Wolf } 2249dd583296SKevin Wolf 2250797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2251797ac58cSKevin Wolf { 2252797ac58cSKevin Wolf /* initialize commands */ 2253c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2254c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2255c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2256c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2257c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2258c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2259c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2260c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2261c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2262c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2263c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2264c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2265c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2266c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2267c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 22685bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2269c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 22704cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2271c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2272c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2273c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2274cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 22750e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2276797ac58cSKevin Wolf } 2277