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 { 140f17fd4fdSMarkus Armbruster int err; 141*f46bfdbfSMarkus Armbruster uint64_t value; 142ef5a7885SJohn Snow 143f17fd4fdSMarkus Armbruster err = qemu_strtosz(s, NULL, &value); 144f17fd4fdSMarkus Armbruster if (err < 0) { 145f17fd4fdSMarkus Armbruster return err; 146f17fd4fdSMarkus Armbruster } 147*f46bfdbfSMarkus Armbruster if (value > INT64_MAX) { 148*f46bfdbfSMarkus Armbruster return -ERANGE; 149*f46bfdbfSMarkus Armbruster } 150f17fd4fdSMarkus Armbruster return value; 151797ac58cSKevin Wolf } 152797ac58cSKevin Wolf 153a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 154a9ecfa00SJohn Snow { 155a9ecfa00SJohn Snow switch (rc) { 156a9ecfa00SJohn Snow case -EINVAL: 157a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 158a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 159a9ecfa00SJohn Snow break; 160a9ecfa00SJohn Snow case -ERANGE: 161a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 162a9ecfa00SJohn Snow break; 163a9ecfa00SJohn Snow default: 164a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 165a9ecfa00SJohn Snow } 166a9ecfa00SJohn Snow } 167a9ecfa00SJohn Snow 1680b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 1690b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 1700b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 1710b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 1720b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 1730b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 1740b613881SKevin Wolf 1750b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 1760b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 1770b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 1780b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 1790b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 1800b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 1810b613881SKevin Wolf 1820b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 1830b613881SKevin Wolf { 1840b613881SKevin Wolf char *trim; 1850b613881SKevin Wolf const char *suffix; 1860b613881SKevin Wolf 1870b613881SKevin Wolf if (value >= EXABYTES(1)) { 1880b613881SKevin Wolf suffix = " EiB"; 1890b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 1900b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 1910b613881SKevin Wolf suffix = " PiB"; 1920b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 1930b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 1940b613881SKevin Wolf suffix = " TiB"; 1950b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 1960b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 1970b613881SKevin Wolf suffix = " GiB"; 1980b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 1990b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 2000b613881SKevin Wolf suffix = " MiB"; 2010b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2020b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2030b613881SKevin Wolf suffix = " KiB"; 2040b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2050b613881SKevin Wolf } else { 2060b613881SKevin Wolf suffix = " bytes"; 2070b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2080b613881SKevin Wolf } 2090b613881SKevin Wolf 2100b613881SKevin Wolf trim = strstr(str, ".000"); 2110b613881SKevin Wolf if (trim) { 2120b613881SKevin Wolf strcpy(trim, suffix); 2130b613881SKevin Wolf } else { 2140b613881SKevin Wolf strcat(str, suffix); 2150b613881SKevin Wolf } 2160b613881SKevin Wolf } 2170b613881SKevin Wolf 2180b613881SKevin Wolf 2190b613881SKevin Wolf 2200b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2210b613881SKevin Wolf { 2220b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2230b613881SKevin Wolf if (t1.tv_usec < 0) { 2240b613881SKevin Wolf t1.tv_usec += 1000000; 2250b613881SKevin Wolf t1.tv_sec--; 2260b613881SKevin Wolf } 2270b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2280b613881SKevin Wolf return t1; 2290b613881SKevin Wolf } 2300b613881SKevin Wolf 2310b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2320b613881SKevin Wolf { 2330b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2340b613881SKevin Wolf } 2350b613881SKevin Wolf 2360b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2370b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2380b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2390b613881SKevin Wolf 2400b613881SKevin Wolf enum { 2410b613881SKevin Wolf DEFAULT_TIME = 0x0, 2420b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2430b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2440b613881SKevin Wolf }; 2450b613881SKevin Wolf 2460b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2470b613881SKevin Wolf { 2480b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2490b613881SKevin Wolf 2500b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2510b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2520b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2530b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2540b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2550b613881SKevin Wolf (unsigned int) (usec * 100)); 2560b613881SKevin Wolf return; 2570b613881SKevin Wolf } 2580b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2590b613881SKevin Wolf } 2600b613881SKevin Wolf 2610b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2620b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2630b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2640b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2650b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2660b613881SKevin Wolf (unsigned int) (usec * 100)); 2670b613881SKevin Wolf } else { 2680b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 2690b613881SKevin Wolf } 2700b613881SKevin Wolf } 2710b613881SKevin Wolf 272797ac58cSKevin Wolf /* 273797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 274797ac58cSKevin Wolf * 275797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 276797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 277797ac58cSKevin Wolf */ 278797ac58cSKevin Wolf static int parse_pattern(const char *arg) 279797ac58cSKevin Wolf { 280797ac58cSKevin Wolf char *endptr = NULL; 281797ac58cSKevin Wolf long pattern; 282797ac58cSKevin Wolf 283797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 284797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 285797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 286797ac58cSKevin Wolf return -1; 287797ac58cSKevin Wolf } 288797ac58cSKevin Wolf 289797ac58cSKevin Wolf return pattern; 290797ac58cSKevin Wolf } 291797ac58cSKevin Wolf 292797ac58cSKevin Wolf /* 293797ac58cSKevin Wolf * Memory allocation helpers. 294797ac58cSKevin Wolf * 295797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 296797ac58cSKevin Wolf * that is specified on the command line. 297797ac58cSKevin Wolf */ 298797ac58cSKevin Wolf 299797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3004c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 301797ac58cSKevin Wolf { 302797ac58cSKevin Wolf void *buf; 303797ac58cSKevin Wolf 304797ac58cSKevin Wolf if (qemuio_misalign) { 305797ac58cSKevin Wolf len += MISALIGN_OFFSET; 306797ac58cSKevin Wolf } 3074c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 308797ac58cSKevin Wolf memset(buf, pattern, len); 309797ac58cSKevin Wolf if (qemuio_misalign) { 310797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 311797ac58cSKevin Wolf } 312797ac58cSKevin Wolf return buf; 313797ac58cSKevin Wolf } 314797ac58cSKevin Wolf 315797ac58cSKevin Wolf static void qemu_io_free(void *p) 316797ac58cSKevin Wolf { 317797ac58cSKevin Wolf if (qemuio_misalign) { 318797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 319797ac58cSKevin Wolf } 320797ac58cSKevin Wolf qemu_vfree(p); 321797ac58cSKevin Wolf } 322797ac58cSKevin Wolf 3239b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 324797ac58cSKevin Wolf { 3259b0beaf3SJohn Snow uint64_t i; 3269b0beaf3SJohn Snow int j; 327797ac58cSKevin Wolf const uint8_t *p; 328797ac58cSKevin Wolf 329797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 330797ac58cSKevin Wolf const uint8_t *s = p; 331797ac58cSKevin Wolf 332797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 333797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 334797ac58cSKevin Wolf printf("%02x ", *p); 335797ac58cSKevin Wolf } 336797ac58cSKevin Wolf printf(" "); 337797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 338797ac58cSKevin Wolf if (isalnum(*s)) { 339797ac58cSKevin Wolf printf("%c", *s); 340797ac58cSKevin Wolf } else { 341797ac58cSKevin Wolf printf("."); 342797ac58cSKevin Wolf } 343797ac58cSKevin Wolf } 344797ac58cSKevin Wolf printf("\n"); 345797ac58cSKevin Wolf } 346797ac58cSKevin Wolf } 347797ac58cSKevin Wolf 348797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 349dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 350797ac58cSKevin Wolf { 351797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 352797ac58cSKevin Wolf 353797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 354797ac58cSKevin Wolf if (!Cflag) { 355797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 356797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3579b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 358797ac58cSKevin Wolf op, total, count, offset); 359797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 360797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 361797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3629b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 363797ac58cSKevin Wolf total, cnt, ts, 364797ac58cSKevin Wolf tdiv((double)total, *t), 365797ac58cSKevin Wolf tdiv((double)cnt, *t)); 366797ac58cSKevin Wolf } 367797ac58cSKevin Wolf } 368797ac58cSKevin Wolf 369797ac58cSKevin Wolf /* 370797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 371797ac58cSKevin Wolf * vector matching it. 372797ac58cSKevin Wolf */ 373797ac58cSKevin Wolf static void * 3744c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 375797ac58cSKevin Wolf int pattern) 376797ac58cSKevin Wolf { 377797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 378797ac58cSKevin Wolf size_t count = 0; 379797ac58cSKevin Wolf void *buf = NULL; 380797ac58cSKevin Wolf void *p; 381797ac58cSKevin Wolf int i; 382797ac58cSKevin Wolf 383797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 384797ac58cSKevin Wolf char *arg = argv[i]; 385797ac58cSKevin Wolf int64_t len; 386797ac58cSKevin Wolf 387797ac58cSKevin Wolf len = cvtnum(arg); 388797ac58cSKevin Wolf if (len < 0) { 389a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 390797ac58cSKevin Wolf goto fail; 391797ac58cSKevin Wolf } 392797ac58cSKevin Wolf 3933026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 3943026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 3953026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 3963026c468SAlberto Garcia goto fail; 3973026c468SAlberto Garcia } 3983026c468SAlberto Garcia 3993026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 4003026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 4013026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 402797ac58cSKevin Wolf goto fail; 403797ac58cSKevin Wolf } 404797ac58cSKevin Wolf 405797ac58cSKevin Wolf sizes[i] = len; 406797ac58cSKevin Wolf count += len; 407797ac58cSKevin Wolf } 408797ac58cSKevin Wolf 409797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 410797ac58cSKevin Wolf 4114c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 412797ac58cSKevin Wolf 413797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 414797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 415797ac58cSKevin Wolf p += sizes[i]; 416797ac58cSKevin Wolf } 417797ac58cSKevin Wolf 418797ac58cSKevin Wolf fail: 419797ac58cSKevin Wolf g_free(sizes); 420797ac58cSKevin Wolf return buf; 421797ac58cSKevin Wolf } 422797ac58cSKevin Wolf 4239b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 4249b0beaf3SJohn Snow int64_t count, int64_t *total) 425797ac58cSKevin Wolf { 4269b0beaf3SJohn Snow if (count > INT_MAX) { 4279b0beaf3SJohn Snow return -ERANGE; 4289b0beaf3SJohn Snow } 4299b0beaf3SJohn Snow 4304c7b7e9bSMax Reitz *total = blk_pread(blk, offset, (uint8_t *)buf, count); 431797ac58cSKevin Wolf if (*total < 0) { 432797ac58cSKevin Wolf return *total; 433797ac58cSKevin Wolf } 434797ac58cSKevin Wolf return 1; 435797ac58cSKevin Wolf } 436797ac58cSKevin Wolf 4379b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 438770e0e0eSEric Blake int64_t count, int flags, int64_t *total) 439797ac58cSKevin Wolf { 4409b0beaf3SJohn Snow if (count > INT_MAX) { 4419b0beaf3SJohn Snow return -ERANGE; 4429b0beaf3SJohn Snow } 4439b0beaf3SJohn Snow 444770e0e0eSEric Blake *total = blk_pwrite(blk, offset, (uint8_t *)buf, count, flags); 445797ac58cSKevin Wolf if (*total < 0) { 446797ac58cSKevin Wolf return *total; 447797ac58cSKevin Wolf } 448797ac58cSKevin Wolf return 1; 449797ac58cSKevin Wolf } 450797ac58cSKevin Wolf 451797ac58cSKevin Wolf typedef struct { 4524c7b7e9bSMax Reitz BlockBackend *blk; 453797ac58cSKevin Wolf int64_t offset; 4549b0beaf3SJohn Snow int64_t count; 4559b0beaf3SJohn Snow int64_t *total; 456770e0e0eSEric Blake int flags; 457797ac58cSKevin Wolf int ret; 458797ac58cSKevin Wolf bool done; 459797ac58cSKevin Wolf } CoWriteZeroes; 460797ac58cSKevin Wolf 461d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 462797ac58cSKevin Wolf { 463797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 464797ac58cSKevin Wolf 465d004bd52SEric Blake data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->count, 466770e0e0eSEric Blake data->flags); 467797ac58cSKevin Wolf data->done = true; 468797ac58cSKevin Wolf if (data->ret < 0) { 469797ac58cSKevin Wolf *data->total = data->ret; 470797ac58cSKevin Wolf return; 471797ac58cSKevin Wolf } 472797ac58cSKevin Wolf 473797ac58cSKevin Wolf *data->total = data->count; 474797ac58cSKevin Wolf } 475797ac58cSKevin Wolf 476d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 477d004bd52SEric Blake int64_t count, int flags, int64_t *total) 478797ac58cSKevin Wolf { 479797ac58cSKevin Wolf Coroutine *co; 480797ac58cSKevin Wolf CoWriteZeroes data = { 4814c7b7e9bSMax Reitz .blk = blk, 482797ac58cSKevin Wolf .offset = offset, 483797ac58cSKevin Wolf .count = count, 484797ac58cSKevin Wolf .total = total, 485770e0e0eSEric Blake .flags = flags, 486797ac58cSKevin Wolf .done = false, 487797ac58cSKevin Wolf }; 488797ac58cSKevin Wolf 489a3674679SMax Reitz if (count > INT_MAX) { 4909b0beaf3SJohn Snow return -ERANGE; 4919b0beaf3SJohn Snow } 4929b0beaf3SJohn Snow 4930b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 4940b8b8753SPaolo Bonzini qemu_coroutine_enter(co); 495797ac58cSKevin Wolf while (!data.done) { 4964c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 497797ac58cSKevin Wolf } 498797ac58cSKevin Wolf if (data.ret < 0) { 499797ac58cSKevin Wolf return data.ret; 500797ac58cSKevin Wolf } else { 501797ac58cSKevin Wolf return 1; 502797ac58cSKevin Wolf } 503797ac58cSKevin Wolf } 504797ac58cSKevin Wolf 5054c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 5069b0beaf3SJohn Snow int64_t count, int64_t *total) 507797ac58cSKevin Wolf { 508797ac58cSKevin Wolf int ret; 509797ac58cSKevin Wolf 510a3674679SMax Reitz if (count >> 9 > BDRV_REQUEST_MAX_SECTORS) { 5119b0beaf3SJohn Snow return -ERANGE; 5129b0beaf3SJohn Snow } 5139b0beaf3SJohn Snow 514fe5c1355SPavel Butsykin ret = blk_pwrite_compressed(blk, offset, buf, count); 515797ac58cSKevin Wolf if (ret < 0) { 516797ac58cSKevin Wolf return ret; 517797ac58cSKevin Wolf } 518797ac58cSKevin Wolf *total = count; 519797ac58cSKevin Wolf return 1; 520797ac58cSKevin Wolf } 521797ac58cSKevin Wolf 5224c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5239b0beaf3SJohn Snow int64_t count, int64_t *total) 524797ac58cSKevin Wolf { 5259b0beaf3SJohn Snow if (count > INT_MAX) { 5269b0beaf3SJohn Snow return -ERANGE; 5279b0beaf3SJohn Snow } 5289b0beaf3SJohn Snow 5294c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 530797ac58cSKevin Wolf if (*total < 0) { 531797ac58cSKevin Wolf return *total; 532797ac58cSKevin Wolf } 533797ac58cSKevin Wolf return 1; 534797ac58cSKevin Wolf } 535797ac58cSKevin Wolf 5364c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5379b0beaf3SJohn Snow int64_t count, int64_t *total) 538797ac58cSKevin Wolf { 5399b0beaf3SJohn Snow if (count > INT_MAX) { 5409b0beaf3SJohn Snow return -ERANGE; 5419b0beaf3SJohn Snow } 5429b0beaf3SJohn Snow 5434c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 544797ac58cSKevin Wolf if (*total < 0) { 545797ac58cSKevin Wolf return *total; 546797ac58cSKevin Wolf } 547797ac58cSKevin Wolf return 1; 548797ac58cSKevin Wolf } 549797ac58cSKevin Wolf 550797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 551797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 552797ac58cSKevin Wolf { 553797ac58cSKevin Wolf *(int *)opaque = ret; 554797ac58cSKevin Wolf } 555797ac58cSKevin Wolf 5564c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 557797ac58cSKevin Wolf int64_t offset, int *total) 558797ac58cSKevin Wolf { 559797ac58cSKevin Wolf int async_ret = NOT_DONE; 560797ac58cSKevin Wolf 5617b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 562797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 563797ac58cSKevin Wolf main_loop_wait(false); 564797ac58cSKevin Wolf } 565797ac58cSKevin Wolf 566797ac58cSKevin Wolf *total = qiov->size; 567797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 568797ac58cSKevin Wolf } 569797ac58cSKevin Wolf 5704c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 571770e0e0eSEric Blake int64_t offset, int flags, int *total) 572797ac58cSKevin Wolf { 573797ac58cSKevin Wolf int async_ret = NOT_DONE; 574797ac58cSKevin Wolf 575770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 576797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 577797ac58cSKevin Wolf main_loop_wait(false); 578797ac58cSKevin Wolf } 579797ac58cSKevin Wolf 580797ac58cSKevin Wolf *total = qiov->size; 581797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 582797ac58cSKevin Wolf } 583797ac58cSKevin Wolf 584797ac58cSKevin Wolf static void read_help(void) 585797ac58cSKevin Wolf { 586797ac58cSKevin Wolf printf( 587797ac58cSKevin Wolf "\n" 588797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 589797ac58cSKevin Wolf "\n" 590797ac58cSKevin Wolf " Example:\n" 591797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 592797ac58cSKevin Wolf "\n" 593797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 594797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 595797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 596797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 597797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 598093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 599797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 600797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 601797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 602797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 603797ac58cSKevin Wolf "\n"); 604797ac58cSKevin Wolf } 605797ac58cSKevin Wolf 6064c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 607797ac58cSKevin Wolf 608797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 609797ac58cSKevin Wolf .name = "read", 610797ac58cSKevin Wolf .altname = "r", 611797ac58cSKevin Wolf .cfunc = read_f, 612797ac58cSKevin Wolf .argmin = 2, 613797ac58cSKevin Wolf .argmax = -1, 614093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 615797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 616797ac58cSKevin Wolf .help = read_help, 617797ac58cSKevin Wolf }; 618797ac58cSKevin Wolf 6194c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 620797ac58cSKevin Wolf { 621797ac58cSKevin Wolf struct timeval t1, t2; 622093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 623dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 624797ac58cSKevin Wolf int c, cnt; 625797ac58cSKevin Wolf char *buf; 626797ac58cSKevin Wolf int64_t offset; 6279b0beaf3SJohn Snow int64_t count; 628797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6299b0beaf3SJohn Snow int64_t total = 0; 6309b0beaf3SJohn Snow int pattern = 0; 6319b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 632797ac58cSKevin Wolf 633b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 634797ac58cSKevin Wolf switch (c) { 635797ac58cSKevin Wolf case 'b': 636dc38852aSEric Blake bflag = true; 637797ac58cSKevin Wolf break; 638797ac58cSKevin Wolf case 'C': 639dc38852aSEric Blake Cflag = true; 640797ac58cSKevin Wolf break; 641797ac58cSKevin Wolf case 'l': 642dc38852aSEric Blake lflag = true; 643797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 644797ac58cSKevin Wolf if (pattern_count < 0) { 645a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 646797ac58cSKevin Wolf return 0; 647797ac58cSKevin Wolf } 648797ac58cSKevin Wolf break; 649797ac58cSKevin Wolf case 'p': 650093ea232SEric Blake /* Ignored for backwards compatibility */ 651797ac58cSKevin Wolf break; 652797ac58cSKevin Wolf case 'P': 653dc38852aSEric Blake Pflag = true; 654797ac58cSKevin Wolf pattern = parse_pattern(optarg); 655797ac58cSKevin Wolf if (pattern < 0) { 656797ac58cSKevin Wolf return 0; 657797ac58cSKevin Wolf } 658797ac58cSKevin Wolf break; 659797ac58cSKevin Wolf case 'q': 660dc38852aSEric Blake qflag = true; 661797ac58cSKevin Wolf break; 662797ac58cSKevin Wolf case 's': 663dc38852aSEric Blake sflag = true; 664797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 665797ac58cSKevin Wolf if (pattern_offset < 0) { 666a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 667797ac58cSKevin Wolf return 0; 668797ac58cSKevin Wolf } 669797ac58cSKevin Wolf break; 670797ac58cSKevin Wolf case 'v': 671dc38852aSEric Blake vflag = true; 672797ac58cSKevin Wolf break; 673797ac58cSKevin Wolf default: 674c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 675797ac58cSKevin Wolf } 676797ac58cSKevin Wolf } 677797ac58cSKevin Wolf 678797ac58cSKevin Wolf if (optind != argc - 2) { 679c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 680797ac58cSKevin Wolf } 681797ac58cSKevin Wolf 682797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 683797ac58cSKevin Wolf if (offset < 0) { 684a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 685797ac58cSKevin Wolf return 0; 686797ac58cSKevin Wolf } 687797ac58cSKevin Wolf 688797ac58cSKevin Wolf optind++; 689797ac58cSKevin Wolf count = cvtnum(argv[optind]); 690797ac58cSKevin Wolf if (count < 0) { 691a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 692797ac58cSKevin Wolf return 0; 6933026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 6949b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 6953026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 6969b0beaf3SJohn Snow return 0; 697797ac58cSKevin Wolf } 698797ac58cSKevin Wolf 699797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 700c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 701797ac58cSKevin Wolf } 702797ac58cSKevin Wolf 703797ac58cSKevin Wolf if (!lflag) { 704797ac58cSKevin Wolf pattern_count = count - pattern_offset; 705797ac58cSKevin Wolf } 706797ac58cSKevin Wolf 707797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 708797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 709797ac58cSKevin Wolf return 0; 710797ac58cSKevin Wolf } 711797ac58cSKevin Wolf 712093ea232SEric Blake if (bflag) { 713797ac58cSKevin Wolf if (offset & 0x1ff) { 714797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 715797ac58cSKevin Wolf offset); 716797ac58cSKevin Wolf return 0; 717797ac58cSKevin Wolf } 718797ac58cSKevin Wolf if (count & 0x1ff) { 7199b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 720797ac58cSKevin Wolf count); 721797ac58cSKevin Wolf return 0; 722797ac58cSKevin Wolf } 723797ac58cSKevin Wolf } 724797ac58cSKevin Wolf 7254c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 726797ac58cSKevin Wolf 727797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7287b3f9712SEric Blake if (bflag) { 7294c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 730797ac58cSKevin Wolf } else { 7317b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 732797ac58cSKevin Wolf } 733797ac58cSKevin Wolf gettimeofday(&t2, NULL); 734797ac58cSKevin Wolf 735797ac58cSKevin Wolf if (cnt < 0) { 736797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 737797ac58cSKevin Wolf goto out; 738797ac58cSKevin Wolf } 739797ac58cSKevin Wolf 740797ac58cSKevin Wolf if (Pflag) { 741797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 742797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 743797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 744797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7459b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 746797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 747797ac58cSKevin Wolf } 748797ac58cSKevin Wolf g_free(cmp_buf); 749797ac58cSKevin Wolf } 750797ac58cSKevin Wolf 751797ac58cSKevin Wolf if (qflag) { 752797ac58cSKevin Wolf goto out; 753797ac58cSKevin Wolf } 754797ac58cSKevin Wolf 755797ac58cSKevin Wolf if (vflag) { 756797ac58cSKevin Wolf dump_buffer(buf, offset, count); 757797ac58cSKevin Wolf } 758797ac58cSKevin Wolf 759797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 760797ac58cSKevin Wolf t2 = tsub(t2, t1); 761797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 762797ac58cSKevin Wolf 763797ac58cSKevin Wolf out: 764797ac58cSKevin Wolf qemu_io_free(buf); 765797ac58cSKevin Wolf 766797ac58cSKevin Wolf return 0; 767797ac58cSKevin Wolf } 768797ac58cSKevin Wolf 769797ac58cSKevin Wolf static void readv_help(void) 770797ac58cSKevin Wolf { 771797ac58cSKevin Wolf printf( 772797ac58cSKevin Wolf "\n" 773797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 774797ac58cSKevin Wolf "\n" 775797ac58cSKevin Wolf " Example:\n" 776797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 777797ac58cSKevin Wolf "\n" 778797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 779797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 780797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 781797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 782797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 783797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 784797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 785797ac58cSKevin Wolf "\n"); 786797ac58cSKevin Wolf } 787797ac58cSKevin Wolf 7884c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 789797ac58cSKevin Wolf 790797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 791797ac58cSKevin Wolf .name = "readv", 792797ac58cSKevin Wolf .cfunc = readv_f, 793797ac58cSKevin Wolf .argmin = 2, 794797ac58cSKevin Wolf .argmax = -1, 795797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 796797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 797797ac58cSKevin Wolf .help = readv_help, 798797ac58cSKevin Wolf }; 799797ac58cSKevin Wolf 8004c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 801797ac58cSKevin Wolf { 802797ac58cSKevin Wolf struct timeval t1, t2; 803dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 804797ac58cSKevin Wolf int c, cnt; 805797ac58cSKevin Wolf char *buf; 806797ac58cSKevin Wolf int64_t offset; 807797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 808797ac58cSKevin Wolf int total = 0; 809797ac58cSKevin Wolf int nr_iov; 810797ac58cSKevin Wolf QEMUIOVector qiov; 811797ac58cSKevin Wolf int pattern = 0; 812dc38852aSEric Blake bool Pflag = false; 813797ac58cSKevin Wolf 814b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 815797ac58cSKevin Wolf switch (c) { 816797ac58cSKevin Wolf case 'C': 817dc38852aSEric Blake Cflag = true; 818797ac58cSKevin Wolf break; 819797ac58cSKevin Wolf case 'P': 820dc38852aSEric Blake Pflag = true; 821797ac58cSKevin Wolf pattern = parse_pattern(optarg); 822797ac58cSKevin Wolf if (pattern < 0) { 823797ac58cSKevin Wolf return 0; 824797ac58cSKevin Wolf } 825797ac58cSKevin Wolf break; 826797ac58cSKevin Wolf case 'q': 827dc38852aSEric Blake qflag = true; 828797ac58cSKevin Wolf break; 829797ac58cSKevin Wolf case 'v': 830dc38852aSEric Blake vflag = true; 831797ac58cSKevin Wolf break; 832797ac58cSKevin Wolf default: 833c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 834797ac58cSKevin Wolf } 835797ac58cSKevin Wolf } 836797ac58cSKevin Wolf 837797ac58cSKevin Wolf if (optind > argc - 2) { 838c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 839797ac58cSKevin Wolf } 840797ac58cSKevin Wolf 841797ac58cSKevin Wolf 842797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 843797ac58cSKevin Wolf if (offset < 0) { 844a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 845797ac58cSKevin Wolf return 0; 846797ac58cSKevin Wolf } 847797ac58cSKevin Wolf optind++; 848797ac58cSKevin Wolf 849797ac58cSKevin Wolf nr_iov = argc - optind; 8504c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 851797ac58cSKevin Wolf if (buf == NULL) { 852797ac58cSKevin Wolf return 0; 853797ac58cSKevin Wolf } 854797ac58cSKevin Wolf 855797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8564c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 857797ac58cSKevin Wolf gettimeofday(&t2, NULL); 858797ac58cSKevin Wolf 859797ac58cSKevin Wolf if (cnt < 0) { 860797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 861797ac58cSKevin Wolf goto out; 862797ac58cSKevin Wolf } 863797ac58cSKevin Wolf 864797ac58cSKevin Wolf if (Pflag) { 865797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 866797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 867797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 868797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 869797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 870797ac58cSKevin Wolf } 871797ac58cSKevin Wolf g_free(cmp_buf); 872797ac58cSKevin Wolf } 873797ac58cSKevin Wolf 874797ac58cSKevin Wolf if (qflag) { 875797ac58cSKevin Wolf goto out; 876797ac58cSKevin Wolf } 877797ac58cSKevin Wolf 878797ac58cSKevin Wolf if (vflag) { 879797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 880797ac58cSKevin Wolf } 881797ac58cSKevin Wolf 882797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 883797ac58cSKevin Wolf t2 = tsub(t2, t1); 884797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 885797ac58cSKevin Wolf 886797ac58cSKevin Wolf out: 887797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 888797ac58cSKevin Wolf qemu_io_free(buf); 889797ac58cSKevin Wolf return 0; 890797ac58cSKevin Wolf } 891797ac58cSKevin Wolf 892797ac58cSKevin Wolf static void write_help(void) 893797ac58cSKevin Wolf { 894797ac58cSKevin Wolf printf( 895797ac58cSKevin Wolf "\n" 896797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 897797ac58cSKevin Wolf "\n" 898797ac58cSKevin Wolf " Example:\n" 899797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 900797ac58cSKevin Wolf "\n" 901797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 902797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 903797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9044c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 905770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 906093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 907797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 908797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 909797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 910c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 911d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 912797ac58cSKevin Wolf "\n"); 913797ac58cSKevin Wolf } 914797ac58cSKevin Wolf 9154c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 916797ac58cSKevin Wolf 917797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 918797ac58cSKevin Wolf .name = "write", 919797ac58cSKevin Wolf .altname = "w", 920797ac58cSKevin Wolf .cfunc = write_f, 921797ac58cSKevin Wolf .argmin = 2, 922797ac58cSKevin Wolf .argmax = -1, 923c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 924797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 925797ac58cSKevin Wolf .help = write_help, 926797ac58cSKevin Wolf }; 927797ac58cSKevin Wolf 9284c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 929797ac58cSKevin Wolf { 930797ac58cSKevin Wolf struct timeval t1, t2; 931093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 932dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 933770e0e0eSEric Blake int flags = 0; 934797ac58cSKevin Wolf int c, cnt; 935797ac58cSKevin Wolf char *buf = NULL; 936797ac58cSKevin Wolf int64_t offset; 9379b0beaf3SJohn Snow int64_t count; 938797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9399b0beaf3SJohn Snow int64_t total = 0; 940797ac58cSKevin Wolf int pattern = 0xcd; 941797ac58cSKevin Wolf 942c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 943797ac58cSKevin Wolf switch (c) { 944797ac58cSKevin Wolf case 'b': 945dc38852aSEric Blake bflag = true; 946797ac58cSKevin Wolf break; 947797ac58cSKevin Wolf case 'c': 948dc38852aSEric Blake cflag = true; 949797ac58cSKevin Wolf break; 950797ac58cSKevin Wolf case 'C': 951dc38852aSEric Blake Cflag = true; 952797ac58cSKevin Wolf break; 953770e0e0eSEric Blake case 'f': 954770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 955770e0e0eSEric Blake break; 956797ac58cSKevin Wolf case 'p': 957093ea232SEric Blake /* Ignored for backwards compatibility */ 958797ac58cSKevin Wolf break; 959797ac58cSKevin Wolf case 'P': 960dc38852aSEric Blake Pflag = true; 961797ac58cSKevin Wolf pattern = parse_pattern(optarg); 962797ac58cSKevin Wolf if (pattern < 0) { 963797ac58cSKevin Wolf return 0; 964797ac58cSKevin Wolf } 965797ac58cSKevin Wolf break; 966797ac58cSKevin Wolf case 'q': 967dc38852aSEric Blake qflag = true; 968797ac58cSKevin Wolf break; 969c2e001ccSEric Blake case 'u': 970c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 971c2e001ccSEric Blake break; 972797ac58cSKevin Wolf case 'z': 973dc38852aSEric Blake zflag = true; 974797ac58cSKevin Wolf break; 975797ac58cSKevin Wolf default: 976c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 977797ac58cSKevin Wolf } 978797ac58cSKevin Wolf } 979797ac58cSKevin Wolf 980797ac58cSKevin Wolf if (optind != argc - 2) { 981c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 982797ac58cSKevin Wolf } 983797ac58cSKevin Wolf 984093ea232SEric Blake if (bflag && zflag) { 985093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 986797ac58cSKevin Wolf return 0; 987797ac58cSKevin Wolf } 988797ac58cSKevin Wolf 989770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 990770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 991770e0e0eSEric Blake return 0; 992770e0e0eSEric Blake } 993770e0e0eSEric Blake 994c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 995c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 996c2e001ccSEric Blake return 0; 997c2e001ccSEric Blake } 998c2e001ccSEric Blake 999797ac58cSKevin Wolf if (zflag && Pflag) { 1000797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1001797ac58cSKevin Wolf return 0; 1002797ac58cSKevin Wolf } 1003797ac58cSKevin Wolf 1004797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1005797ac58cSKevin Wolf if (offset < 0) { 1006a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1007797ac58cSKevin Wolf return 0; 1008797ac58cSKevin Wolf } 1009797ac58cSKevin Wolf 1010797ac58cSKevin Wolf optind++; 1011797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1012797ac58cSKevin Wolf if (count < 0) { 1013a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1014797ac58cSKevin Wolf return 0; 10153026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10169b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10173026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 10189b0beaf3SJohn Snow return 0; 1019797ac58cSKevin Wolf } 1020797ac58cSKevin Wolf 1021093ea232SEric Blake if (bflag || cflag) { 1022797ac58cSKevin Wolf if (offset & 0x1ff) { 1023797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1024797ac58cSKevin Wolf offset); 1025797ac58cSKevin Wolf return 0; 1026797ac58cSKevin Wolf } 1027797ac58cSKevin Wolf 1028797ac58cSKevin Wolf if (count & 0x1ff) { 10299b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 1030797ac58cSKevin Wolf count); 1031797ac58cSKevin Wolf return 0; 1032797ac58cSKevin Wolf } 1033797ac58cSKevin Wolf } 1034797ac58cSKevin Wolf 1035797ac58cSKevin Wolf if (!zflag) { 10364c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1037797ac58cSKevin Wolf } 1038797ac58cSKevin Wolf 1039797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10407b3f9712SEric Blake if (bflag) { 10414c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1042797ac58cSKevin Wolf } else if (zflag) { 1043d004bd52SEric Blake cnt = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1044797ac58cSKevin Wolf } else if (cflag) { 10454c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1046797ac58cSKevin Wolf } else { 1047770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1048797ac58cSKevin Wolf } 1049797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1050797ac58cSKevin Wolf 1051797ac58cSKevin Wolf if (cnt < 0) { 1052797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1053797ac58cSKevin Wolf goto out; 1054797ac58cSKevin Wolf } 1055797ac58cSKevin Wolf 1056797ac58cSKevin Wolf if (qflag) { 1057797ac58cSKevin Wolf goto out; 1058797ac58cSKevin Wolf } 1059797ac58cSKevin Wolf 1060797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1061797ac58cSKevin Wolf t2 = tsub(t2, t1); 1062797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1063797ac58cSKevin Wolf 1064797ac58cSKevin Wolf out: 1065797ac58cSKevin Wolf if (!zflag) { 1066797ac58cSKevin Wolf qemu_io_free(buf); 1067797ac58cSKevin Wolf } 1068797ac58cSKevin Wolf 1069797ac58cSKevin Wolf return 0; 1070797ac58cSKevin Wolf } 1071797ac58cSKevin Wolf 1072797ac58cSKevin Wolf static void 1073797ac58cSKevin Wolf writev_help(void) 1074797ac58cSKevin Wolf { 1075797ac58cSKevin Wolf printf( 1076797ac58cSKevin Wolf "\n" 1077797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1078797ac58cSKevin Wolf "\n" 1079797ac58cSKevin Wolf " Example:\n" 10806e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1081797ac58cSKevin Wolf "\n" 1082797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1083797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1084797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1085797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1086770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1087797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1088797ac58cSKevin Wolf "\n"); 1089797ac58cSKevin Wolf } 1090797ac58cSKevin Wolf 10914c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1092797ac58cSKevin Wolf 1093797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1094797ac58cSKevin Wolf .name = "writev", 1095797ac58cSKevin Wolf .cfunc = writev_f, 1096797ac58cSKevin Wolf .argmin = 2, 1097797ac58cSKevin Wolf .argmax = -1, 1098770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1099797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1100797ac58cSKevin Wolf .help = writev_help, 1101797ac58cSKevin Wolf }; 1102797ac58cSKevin Wolf 11034c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1104797ac58cSKevin Wolf { 1105797ac58cSKevin Wolf struct timeval t1, t2; 1106dc38852aSEric Blake bool Cflag = false, qflag = false; 1107770e0e0eSEric Blake int flags = 0; 1108797ac58cSKevin Wolf int c, cnt; 1109797ac58cSKevin Wolf char *buf; 1110797ac58cSKevin Wolf int64_t offset; 1111797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1112797ac58cSKevin Wolf int total = 0; 1113797ac58cSKevin Wolf int nr_iov; 1114797ac58cSKevin Wolf int pattern = 0xcd; 1115797ac58cSKevin Wolf QEMUIOVector qiov; 1116797ac58cSKevin Wolf 11174ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1118797ac58cSKevin Wolf switch (c) { 1119797ac58cSKevin Wolf case 'C': 1120dc38852aSEric Blake Cflag = true; 1121797ac58cSKevin Wolf break; 1122770e0e0eSEric Blake case 'f': 1123770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1124770e0e0eSEric Blake break; 1125797ac58cSKevin Wolf case 'q': 1126dc38852aSEric Blake qflag = true; 1127797ac58cSKevin Wolf break; 1128797ac58cSKevin Wolf case 'P': 1129797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1130797ac58cSKevin Wolf if (pattern < 0) { 1131797ac58cSKevin Wolf return 0; 1132797ac58cSKevin Wolf } 1133797ac58cSKevin Wolf break; 1134797ac58cSKevin Wolf default: 1135c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1136797ac58cSKevin Wolf } 1137797ac58cSKevin Wolf } 1138797ac58cSKevin Wolf 1139797ac58cSKevin Wolf if (optind > argc - 2) { 1140c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1141797ac58cSKevin Wolf } 1142797ac58cSKevin Wolf 1143797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1144797ac58cSKevin Wolf if (offset < 0) { 1145a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1146797ac58cSKevin Wolf return 0; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf optind++; 1149797ac58cSKevin Wolf 1150797ac58cSKevin Wolf nr_iov = argc - optind; 11514c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1152797ac58cSKevin Wolf if (buf == NULL) { 1153797ac58cSKevin Wolf return 0; 1154797ac58cSKevin Wolf } 1155797ac58cSKevin Wolf 1156797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1157770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1158797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1159797ac58cSKevin Wolf 1160797ac58cSKevin Wolf if (cnt < 0) { 1161797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1162797ac58cSKevin Wolf goto out; 1163797ac58cSKevin Wolf } 1164797ac58cSKevin Wolf 1165797ac58cSKevin Wolf if (qflag) { 1166797ac58cSKevin Wolf goto out; 1167797ac58cSKevin Wolf } 1168797ac58cSKevin Wolf 1169797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1170797ac58cSKevin Wolf t2 = tsub(t2, t1); 1171797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1172797ac58cSKevin Wolf out: 1173797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1174797ac58cSKevin Wolf qemu_io_free(buf); 1175797ac58cSKevin Wolf return 0; 1176797ac58cSKevin Wolf } 1177797ac58cSKevin Wolf 1178797ac58cSKevin Wolf struct aio_ctx { 11794c7b7e9bSMax Reitz BlockBackend *blk; 1180797ac58cSKevin Wolf QEMUIOVector qiov; 1181797ac58cSKevin Wolf int64_t offset; 1182797ac58cSKevin Wolf char *buf; 1183dc38852aSEric Blake bool qflag; 1184dc38852aSEric Blake bool vflag; 1185dc38852aSEric Blake bool Cflag; 1186dc38852aSEric Blake bool Pflag; 1187dc38852aSEric Blake bool zflag; 1188a91f9584SFam Zheng BlockAcctCookie acct; 1189797ac58cSKevin Wolf int pattern; 1190797ac58cSKevin Wolf struct timeval t1; 1191797ac58cSKevin Wolf }; 1192797ac58cSKevin Wolf 1193797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1194797ac58cSKevin Wolf { 1195797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1196797ac58cSKevin Wolf struct timeval t2; 1197797ac58cSKevin Wolf 1198797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1199797ac58cSKevin Wolf 1200797ac58cSKevin Wolf 1201797ac58cSKevin Wolf if (ret < 0) { 1202797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1203556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1204797ac58cSKevin Wolf goto out; 1205797ac58cSKevin Wolf } 1206797ac58cSKevin Wolf 12074c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1208a91f9584SFam Zheng 1209797ac58cSKevin Wolf if (ctx->qflag) { 1210797ac58cSKevin Wolf goto out; 1211797ac58cSKevin Wolf } 1212797ac58cSKevin Wolf 1213797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1214797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1215797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1216797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1217797ac58cSKevin Wolf out: 12185ceb7765SKevin Wolf if (!ctx->zflag) { 1219797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1220797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12215ceb7765SKevin Wolf } 1222797ac58cSKevin Wolf g_free(ctx); 1223797ac58cSKevin Wolf } 1224797ac58cSKevin Wolf 1225797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1226797ac58cSKevin Wolf { 1227797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1228797ac58cSKevin Wolf struct timeval t2; 1229797ac58cSKevin Wolf 1230797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1231797ac58cSKevin Wolf 1232797ac58cSKevin Wolf if (ret < 0) { 1233797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1234556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1235797ac58cSKevin Wolf goto out; 1236797ac58cSKevin Wolf } 1237797ac58cSKevin Wolf 1238797ac58cSKevin Wolf if (ctx->Pflag) { 1239797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1240797ac58cSKevin Wolf 1241797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1242797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1243797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1244797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1245797ac58cSKevin Wolf } 1246797ac58cSKevin Wolf g_free(cmp_buf); 1247797ac58cSKevin Wolf } 1248797ac58cSKevin Wolf 12494c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1250a91f9584SFam Zheng 1251797ac58cSKevin Wolf if (ctx->qflag) { 1252797ac58cSKevin Wolf goto out; 1253797ac58cSKevin Wolf } 1254797ac58cSKevin Wolf 1255797ac58cSKevin Wolf if (ctx->vflag) { 1256797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1257797ac58cSKevin Wolf } 1258797ac58cSKevin Wolf 1259797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1260797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1261797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1262797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1263797ac58cSKevin Wolf out: 1264797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1265797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1266797ac58cSKevin Wolf g_free(ctx); 1267797ac58cSKevin Wolf } 1268797ac58cSKevin Wolf 1269797ac58cSKevin Wolf static void aio_read_help(void) 1270797ac58cSKevin Wolf { 1271797ac58cSKevin Wolf printf( 1272797ac58cSKevin Wolf "\n" 1273797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1274797ac58cSKevin Wolf "\n" 1275797ac58cSKevin Wolf " Example:\n" 1276797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1277797ac58cSKevin Wolf "\n" 1278797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1279797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1280797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1281797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1282797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1283797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 128437546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1285797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1286797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1287797ac58cSKevin Wolf "\n"); 1288797ac58cSKevin Wolf } 1289797ac58cSKevin Wolf 12904c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1291797ac58cSKevin Wolf 1292797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1293797ac58cSKevin Wolf .name = "aio_read", 1294797ac58cSKevin Wolf .cfunc = aio_read_f, 1295797ac58cSKevin Wolf .argmin = 2, 1296797ac58cSKevin Wolf .argmax = -1, 129737546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1298797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1299797ac58cSKevin Wolf .help = aio_read_help, 1300797ac58cSKevin Wolf }; 1301797ac58cSKevin Wolf 13024c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1303797ac58cSKevin Wolf { 1304797ac58cSKevin Wolf int nr_iov, c; 1305797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1306797ac58cSKevin Wolf 13074c7b7e9bSMax Reitz ctx->blk = blk; 130837546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1309797ac58cSKevin Wolf switch (c) { 1310797ac58cSKevin Wolf case 'C': 1311dc38852aSEric Blake ctx->Cflag = true; 1312797ac58cSKevin Wolf break; 1313797ac58cSKevin Wolf case 'P': 1314dc38852aSEric Blake ctx->Pflag = true; 1315797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1316797ac58cSKevin Wolf if (ctx->pattern < 0) { 1317797ac58cSKevin Wolf g_free(ctx); 1318797ac58cSKevin Wolf return 0; 1319797ac58cSKevin Wolf } 1320797ac58cSKevin Wolf break; 132137546ff2SEric Blake case 'i': 132237546ff2SEric Blake printf("injecting invalid read request\n"); 132337546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 132437546ff2SEric Blake g_free(ctx); 132537546ff2SEric Blake return 0; 1326797ac58cSKevin Wolf case 'q': 1327dc38852aSEric Blake ctx->qflag = true; 1328797ac58cSKevin Wolf break; 1329797ac58cSKevin Wolf case 'v': 1330dc38852aSEric Blake ctx->vflag = true; 1331797ac58cSKevin Wolf break; 1332797ac58cSKevin Wolf default: 1333797ac58cSKevin Wolf g_free(ctx); 1334c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1335797ac58cSKevin Wolf } 1336797ac58cSKevin Wolf } 1337797ac58cSKevin Wolf 1338797ac58cSKevin Wolf if (optind > argc - 2) { 1339797ac58cSKevin Wolf g_free(ctx); 1340c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1341797ac58cSKevin Wolf } 1342797ac58cSKevin Wolf 1343797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1344797ac58cSKevin Wolf if (ctx->offset < 0) { 1345a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1346797ac58cSKevin Wolf g_free(ctx); 1347797ac58cSKevin Wolf return 0; 1348797ac58cSKevin Wolf } 1349797ac58cSKevin Wolf optind++; 1350797ac58cSKevin Wolf 1351797ac58cSKevin Wolf nr_iov = argc - optind; 13524c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1353797ac58cSKevin Wolf if (ctx->buf == NULL) { 1354556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1355797ac58cSKevin Wolf g_free(ctx); 1356797ac58cSKevin Wolf return 0; 1357797ac58cSKevin Wolf } 1358797ac58cSKevin Wolf 1359797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 13604c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 13614c7b7e9bSMax Reitz BLOCK_ACCT_READ); 13627b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1363797ac58cSKevin Wolf return 0; 1364797ac58cSKevin Wolf } 1365797ac58cSKevin Wolf 1366797ac58cSKevin Wolf static void aio_write_help(void) 1367797ac58cSKevin Wolf { 1368797ac58cSKevin Wolf printf( 1369797ac58cSKevin Wolf "\n" 1370797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1371797ac58cSKevin Wolf " from multiple buffers\n" 1372797ac58cSKevin Wolf "\n" 1373797ac58cSKevin Wolf " Example:\n" 1374797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1375797ac58cSKevin Wolf "\n" 1376797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1377797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1378797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1379797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1380797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1381797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1382770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 138337546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1384797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1385c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1386d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1387797ac58cSKevin Wolf "\n"); 1388797ac58cSKevin Wolf } 1389797ac58cSKevin Wolf 13904c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1391797ac58cSKevin Wolf 1392797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1393797ac58cSKevin Wolf .name = "aio_write", 1394797ac58cSKevin Wolf .cfunc = aio_write_f, 1395797ac58cSKevin Wolf .argmin = 2, 1396797ac58cSKevin Wolf .argmax = -1, 139737546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1398797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1399797ac58cSKevin Wolf .help = aio_write_help, 1400797ac58cSKevin Wolf }; 1401797ac58cSKevin Wolf 14024c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1403797ac58cSKevin Wolf { 1404797ac58cSKevin Wolf int nr_iov, c; 1405797ac58cSKevin Wolf int pattern = 0xcd; 1406797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1407770e0e0eSEric Blake int flags = 0; 1408797ac58cSKevin Wolf 14094c7b7e9bSMax Reitz ctx->blk = blk; 141037546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1411797ac58cSKevin Wolf switch (c) { 1412797ac58cSKevin Wolf case 'C': 1413dc38852aSEric Blake ctx->Cflag = true; 1414797ac58cSKevin Wolf break; 1415770e0e0eSEric Blake case 'f': 1416770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1417770e0e0eSEric Blake break; 1418797ac58cSKevin Wolf case 'q': 1419dc38852aSEric Blake ctx->qflag = true; 1420797ac58cSKevin Wolf break; 1421c2e001ccSEric Blake case 'u': 1422c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1423c2e001ccSEric Blake break; 1424797ac58cSKevin Wolf case 'P': 1425797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1426797ac58cSKevin Wolf if (pattern < 0) { 1427797ac58cSKevin Wolf g_free(ctx); 1428797ac58cSKevin Wolf return 0; 1429797ac58cSKevin Wolf } 1430797ac58cSKevin Wolf break; 143137546ff2SEric Blake case 'i': 143237546ff2SEric Blake printf("injecting invalid write request\n"); 143337546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 143437546ff2SEric Blake g_free(ctx); 143537546ff2SEric Blake return 0; 14365ceb7765SKevin Wolf case 'z': 1437dc38852aSEric Blake ctx->zflag = true; 14385ceb7765SKevin Wolf break; 1439797ac58cSKevin Wolf default: 1440797ac58cSKevin Wolf g_free(ctx); 1441c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1442797ac58cSKevin Wolf } 1443797ac58cSKevin Wolf } 1444797ac58cSKevin Wolf 1445797ac58cSKevin Wolf if (optind > argc - 2) { 1446797ac58cSKevin Wolf g_free(ctx); 1447c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1448797ac58cSKevin Wolf } 1449797ac58cSKevin Wolf 14505ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 14515ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 14525ceb7765SKevin Wolf g_free(ctx); 14535ceb7765SKevin Wolf return 0; 14545ceb7765SKevin Wolf } 14555ceb7765SKevin Wolf 1456c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1457c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 14584ca1d340SEric Blake g_free(ctx); 1459c2e001ccSEric Blake return 0; 1460c2e001ccSEric Blake } 1461c2e001ccSEric Blake 14625ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 14635ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 14645ceb7765SKevin Wolf g_free(ctx); 14655ceb7765SKevin Wolf return 0; 14665ceb7765SKevin Wolf } 14675ceb7765SKevin Wolf 1468797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1469797ac58cSKevin Wolf if (ctx->offset < 0) { 1470a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1471797ac58cSKevin Wolf g_free(ctx); 1472797ac58cSKevin Wolf return 0; 1473797ac58cSKevin Wolf } 1474797ac58cSKevin Wolf optind++; 1475797ac58cSKevin Wolf 14765ceb7765SKevin Wolf if (ctx->zflag) { 14775ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 14785ceb7765SKevin Wolf if (count < 0) { 14795ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 14800e01b76eSKevin Wolf g_free(ctx); 14815ceb7765SKevin Wolf return 0; 14825ceb7765SKevin Wolf } 14835ceb7765SKevin Wolf 14845ceb7765SKevin Wolf ctx->qiov.size = count; 1485d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1486770e0e0eSEric Blake ctx); 14875ceb7765SKevin Wolf } else { 1488797ac58cSKevin Wolf nr_iov = argc - optind; 14895ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 14905ceb7765SKevin Wolf pattern); 1491797ac58cSKevin Wolf if (ctx->buf == NULL) { 1492556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1493797ac58cSKevin Wolf g_free(ctx); 1494797ac58cSKevin Wolf return 0; 1495797ac58cSKevin Wolf } 1496797ac58cSKevin Wolf 1497797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 14984c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14994c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 15005ceb7765SKevin Wolf 1501770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1502770e0e0eSEric Blake ctx); 15035ceb7765SKevin Wolf } 1504797ac58cSKevin Wolf return 0; 1505797ac58cSKevin Wolf } 1506797ac58cSKevin Wolf 15074c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1508797ac58cSKevin Wolf { 1509556c2b60SAlberto Garcia BlockAcctCookie cookie; 1510556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15114c7b7e9bSMax Reitz blk_drain_all(); 1512556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1513797ac58cSKevin Wolf return 0; 1514797ac58cSKevin Wolf } 1515797ac58cSKevin Wolf 1516797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1517797ac58cSKevin Wolf .name = "aio_flush", 1518797ac58cSKevin Wolf .cfunc = aio_flush_f, 1519797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1520797ac58cSKevin Wolf }; 1521797ac58cSKevin Wolf 15224c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1523797ac58cSKevin Wolf { 15244c7b7e9bSMax Reitz blk_flush(blk); 1525797ac58cSKevin Wolf return 0; 1526797ac58cSKevin Wolf } 1527797ac58cSKevin Wolf 1528797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1529797ac58cSKevin Wolf .name = "flush", 1530797ac58cSKevin Wolf .altname = "f", 1531797ac58cSKevin Wolf .cfunc = flush_f, 1532797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1533797ac58cSKevin Wolf }; 1534797ac58cSKevin Wolf 15354c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1536797ac58cSKevin Wolf { 1537797ac58cSKevin Wolf int64_t offset; 1538797ac58cSKevin Wolf int ret; 1539797ac58cSKevin Wolf 1540797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1541797ac58cSKevin Wolf if (offset < 0) { 1542a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1543797ac58cSKevin Wolf return 0; 1544797ac58cSKevin Wolf } 1545797ac58cSKevin Wolf 15464c7b7e9bSMax Reitz ret = blk_truncate(blk, offset); 1547797ac58cSKevin Wolf if (ret < 0) { 1548797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1549797ac58cSKevin Wolf return 0; 1550797ac58cSKevin Wolf } 1551797ac58cSKevin Wolf 1552797ac58cSKevin Wolf return 0; 1553797ac58cSKevin Wolf } 1554797ac58cSKevin Wolf 1555797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1556797ac58cSKevin Wolf .name = "truncate", 1557797ac58cSKevin Wolf .altname = "t", 1558797ac58cSKevin Wolf .cfunc = truncate_f, 1559797ac58cSKevin Wolf .argmin = 1, 1560797ac58cSKevin Wolf .argmax = 1, 1561797ac58cSKevin Wolf .args = "off", 1562797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1563797ac58cSKevin Wolf }; 1564797ac58cSKevin Wolf 15654c7b7e9bSMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1566797ac58cSKevin Wolf { 1567797ac58cSKevin Wolf int64_t size; 1568797ac58cSKevin Wolf char s1[64]; 1569797ac58cSKevin Wolf 15704c7b7e9bSMax Reitz size = blk_getlength(blk); 1571797ac58cSKevin Wolf if (size < 0) { 1572797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1573797ac58cSKevin Wolf return 0; 1574797ac58cSKevin Wolf } 1575797ac58cSKevin Wolf 1576797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1577797ac58cSKevin Wolf printf("%s\n", s1); 1578797ac58cSKevin Wolf return 0; 1579797ac58cSKevin Wolf } 1580797ac58cSKevin Wolf 1581797ac58cSKevin Wolf 1582797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1583797ac58cSKevin Wolf .name = "length", 1584797ac58cSKevin Wolf .altname = "l", 1585797ac58cSKevin Wolf .cfunc = length_f, 1586797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1587797ac58cSKevin Wolf }; 1588797ac58cSKevin Wolf 1589797ac58cSKevin Wolf 15904c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1591797ac58cSKevin Wolf { 15924c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1593797ac58cSKevin Wolf BlockDriverInfo bdi; 1594a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1595797ac58cSKevin Wolf char s1[64], s2[64]; 1596797ac58cSKevin Wolf int ret; 1597797ac58cSKevin Wolf 1598797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1599797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1600797ac58cSKevin Wolf } 1601797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1602797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1603797ac58cSKevin Wolf } 1604797ac58cSKevin Wolf 1605797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1606797ac58cSKevin Wolf if (ret) { 1607797ac58cSKevin Wolf return 0; 1608797ac58cSKevin Wolf } 1609797ac58cSKevin Wolf 1610797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1611797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1612797ac58cSKevin Wolf 1613797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1614797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1615797ac58cSKevin Wolf 1616a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1617a8d8ecb7SMax Reitz if (spec_info) { 1618a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1619a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1620a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1621a8d8ecb7SMax Reitz } 1622a8d8ecb7SMax Reitz 1623797ac58cSKevin Wolf return 0; 1624797ac58cSKevin Wolf } 1625797ac58cSKevin Wolf 1626797ac58cSKevin Wolf 1627797ac58cSKevin Wolf 1628797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1629797ac58cSKevin Wolf .name = "info", 1630797ac58cSKevin Wolf .altname = "i", 1631797ac58cSKevin Wolf .cfunc = info_f, 1632797ac58cSKevin Wolf .oneline = "prints information about the current file", 1633797ac58cSKevin Wolf }; 1634797ac58cSKevin Wolf 1635797ac58cSKevin Wolf static void discard_help(void) 1636797ac58cSKevin Wolf { 1637797ac58cSKevin Wolf printf( 1638797ac58cSKevin Wolf "\n" 1639797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1640797ac58cSKevin Wolf "\n" 1641797ac58cSKevin Wolf " Example:\n" 1642797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1643797ac58cSKevin Wolf "\n" 1644797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1645797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1646797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1647797ac58cSKevin Wolf "\n"); 1648797ac58cSKevin Wolf } 1649797ac58cSKevin Wolf 16504c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1651797ac58cSKevin Wolf 1652797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1653797ac58cSKevin Wolf .name = "discard", 1654797ac58cSKevin Wolf .altname = "d", 1655797ac58cSKevin Wolf .cfunc = discard_f, 1656797ac58cSKevin Wolf .argmin = 2, 1657797ac58cSKevin Wolf .argmax = -1, 1658797ac58cSKevin Wolf .args = "[-Cq] off len", 1659797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1660797ac58cSKevin Wolf .help = discard_help, 1661797ac58cSKevin Wolf }; 1662797ac58cSKevin Wolf 16634c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1664797ac58cSKevin Wolf { 1665797ac58cSKevin Wolf struct timeval t1, t2; 1666dc38852aSEric Blake bool Cflag = false, qflag = false; 1667797ac58cSKevin Wolf int c, ret; 16689b0beaf3SJohn Snow int64_t offset, count; 1669797ac58cSKevin Wolf 1670b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1671797ac58cSKevin Wolf switch (c) { 1672797ac58cSKevin Wolf case 'C': 1673dc38852aSEric Blake Cflag = true; 1674797ac58cSKevin Wolf break; 1675797ac58cSKevin Wolf case 'q': 1676dc38852aSEric Blake qflag = true; 1677797ac58cSKevin Wolf break; 1678797ac58cSKevin Wolf default: 1679c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1680797ac58cSKevin Wolf } 1681797ac58cSKevin Wolf } 1682797ac58cSKevin Wolf 1683797ac58cSKevin Wolf if (optind != argc - 2) { 1684c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1685797ac58cSKevin Wolf } 1686797ac58cSKevin Wolf 1687797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1688797ac58cSKevin Wolf if (offset < 0) { 1689a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1690797ac58cSKevin Wolf return 0; 1691797ac58cSKevin Wolf } 1692797ac58cSKevin Wolf 1693797ac58cSKevin Wolf optind++; 1694797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1695797ac58cSKevin Wolf if (count < 0) { 1696a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1697797ac58cSKevin Wolf return 0; 1698a3674679SMax Reitz } else if (count >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) { 16999b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 1700a3674679SMax Reitz (uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS, 17019b0beaf3SJohn Snow argv[optind]); 17029b0beaf3SJohn Snow return 0; 1703797ac58cSKevin Wolf } 1704797ac58cSKevin Wolf 1705797ac58cSKevin Wolf gettimeofday(&t1, NULL); 17061c6c4bb7SEric Blake ret = blk_pdiscard(blk, offset, count); 1707797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1708797ac58cSKevin Wolf 1709797ac58cSKevin Wolf if (ret < 0) { 1710797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1711797ac58cSKevin Wolf goto out; 1712797ac58cSKevin Wolf } 1713797ac58cSKevin Wolf 1714797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1715797ac58cSKevin Wolf if (!qflag) { 1716797ac58cSKevin Wolf t2 = tsub(t2, t1); 1717797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1718797ac58cSKevin Wolf } 1719797ac58cSKevin Wolf 1720797ac58cSKevin Wolf out: 1721797ac58cSKevin Wolf return 0; 1722797ac58cSKevin Wolf } 1723797ac58cSKevin Wolf 17244c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1725797ac58cSKevin Wolf { 17264c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 17279b0beaf3SJohn Snow int64_t offset, sector_num, nb_sectors, remaining; 1728797ac58cSKevin Wolf char s1[64]; 17299b0beaf3SJohn Snow int num, ret; 17309b0beaf3SJohn Snow int64_t sum_alloc; 1731797ac58cSKevin Wolf 1732797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1733797ac58cSKevin Wolf if (offset < 0) { 1734a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1735797ac58cSKevin Wolf return 0; 1736797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1737797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1738797ac58cSKevin Wolf offset); 1739797ac58cSKevin Wolf return 0; 1740797ac58cSKevin Wolf } 1741797ac58cSKevin Wolf 1742797ac58cSKevin Wolf if (argc == 3) { 1743797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1744797ac58cSKevin Wolf if (nb_sectors < 0) { 1745a9ecfa00SJohn Snow print_cvtnum_err(nb_sectors, argv[2]); 1746797ac58cSKevin Wolf return 0; 17479b0beaf3SJohn Snow } else if (nb_sectors > INT_MAX) { 17489b0beaf3SJohn Snow printf("length argument cannot exceed %d, given %s\n", 17499b0beaf3SJohn Snow INT_MAX, argv[2]); 17509b0beaf3SJohn Snow return 0; 1751797ac58cSKevin Wolf } 1752797ac58cSKevin Wolf } else { 1753797ac58cSKevin Wolf nb_sectors = 1; 1754797ac58cSKevin Wolf } 1755797ac58cSKevin Wolf 1756797ac58cSKevin Wolf remaining = nb_sectors; 1757797ac58cSKevin Wolf sum_alloc = 0; 1758797ac58cSKevin Wolf sector_num = offset >> 9; 1759797ac58cSKevin Wolf while (remaining) { 1760797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1761d663640cSPaolo Bonzini if (ret < 0) { 1762d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1763d663640cSPaolo Bonzini return 0; 1764d663640cSPaolo Bonzini } 1765797ac58cSKevin Wolf sector_num += num; 1766797ac58cSKevin Wolf remaining -= num; 1767797ac58cSKevin Wolf if (ret) { 1768797ac58cSKevin Wolf sum_alloc += num; 1769797ac58cSKevin Wolf } 1770797ac58cSKevin Wolf if (num == 0) { 1771797ac58cSKevin Wolf nb_sectors -= remaining; 1772797ac58cSKevin Wolf remaining = 0; 1773797ac58cSKevin Wolf } 1774797ac58cSKevin Wolf } 1775797ac58cSKevin Wolf 1776797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1777797ac58cSKevin Wolf 17789b0beaf3SJohn Snow printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n", 1779797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1780797ac58cSKevin Wolf return 0; 1781797ac58cSKevin Wolf } 1782797ac58cSKevin Wolf 1783797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1784797ac58cSKevin Wolf .name = "alloc", 1785797ac58cSKevin Wolf .altname = "a", 1786797ac58cSKevin Wolf .argmin = 1, 1787797ac58cSKevin Wolf .argmax = 2, 1788797ac58cSKevin Wolf .cfunc = alloc_f, 1789797ac58cSKevin Wolf .args = "off [sectors]", 1790797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1791797ac58cSKevin Wolf }; 1792797ac58cSKevin Wolf 1793797ac58cSKevin Wolf 1794797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1795797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1796797ac58cSKevin Wolf { 1797797ac58cSKevin Wolf int num, num_checked; 1798797ac58cSKevin Wolf int ret, firstret; 1799797ac58cSKevin Wolf 1800797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1801797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1802797ac58cSKevin Wolf if (ret < 0) { 1803797ac58cSKevin Wolf return ret; 1804797ac58cSKevin Wolf } 1805797ac58cSKevin Wolf 1806797ac58cSKevin Wolf firstret = ret; 1807797ac58cSKevin Wolf *pnum = num; 1808797ac58cSKevin Wolf 1809797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1810797ac58cSKevin Wolf sector_num += num; 1811797ac58cSKevin Wolf nb_sectors -= num; 1812797ac58cSKevin Wolf 1813797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1814797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 18154b25bbc4SMax Reitz if (ret == firstret && num) { 1816797ac58cSKevin Wolf *pnum += num; 1817797ac58cSKevin Wolf } else { 1818797ac58cSKevin Wolf break; 1819797ac58cSKevin Wolf } 1820797ac58cSKevin Wolf } 1821797ac58cSKevin Wolf 1822797ac58cSKevin Wolf return firstret; 1823797ac58cSKevin Wolf } 1824797ac58cSKevin Wolf 18254c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1826797ac58cSKevin Wolf { 1827797ac58cSKevin Wolf int64_t offset; 18284c7b7e9bSMax Reitz int64_t nb_sectors, total_sectors; 1829797ac58cSKevin Wolf char s1[64]; 1830797ac58cSKevin Wolf int64_t num; 1831797ac58cSKevin Wolf int ret; 1832797ac58cSKevin Wolf const char *retstr; 1833797ac58cSKevin Wolf 1834797ac58cSKevin Wolf offset = 0; 18354c7b7e9bSMax Reitz total_sectors = blk_nb_sectors(blk); 18364c7b7e9bSMax Reitz if (total_sectors < 0) { 18374c7b7e9bSMax Reitz error_report("Failed to query image length: %s", 18384c7b7e9bSMax Reitz strerror(-total_sectors)); 18394c7b7e9bSMax Reitz return 0; 18404c7b7e9bSMax Reitz } 18414c7b7e9bSMax Reitz 18424c7b7e9bSMax Reitz nb_sectors = total_sectors; 1843797ac58cSKevin Wolf 1844797ac58cSKevin Wolf do { 18454c7b7e9bSMax Reitz ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num); 1846797ac58cSKevin Wolf if (ret < 0) { 1847797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1848797ac58cSKevin Wolf return 0; 18494b25bbc4SMax Reitz } else if (!num) { 18504b25bbc4SMax Reitz error_report("Unexpected end of image"); 18514b25bbc4SMax Reitz return 0; 1852797ac58cSKevin Wolf } 1853797ac58cSKevin Wolf 1854797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1855797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 1856797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 1857797ac58cSKevin Wolf "at offset %s (%d)\n", 1858797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 1859797ac58cSKevin Wolf 1860797ac58cSKevin Wolf offset += num; 1861797ac58cSKevin Wolf nb_sectors -= num; 18624c7b7e9bSMax Reitz } while (offset < total_sectors); 1863797ac58cSKevin Wolf 1864797ac58cSKevin Wolf return 0; 1865797ac58cSKevin Wolf } 1866797ac58cSKevin Wolf 1867797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1868797ac58cSKevin Wolf .name = "map", 1869797ac58cSKevin Wolf .argmin = 0, 1870797ac58cSKevin Wolf .argmax = 0, 1871797ac58cSKevin Wolf .cfunc = map_f, 1872797ac58cSKevin Wolf .args = "", 1873797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1874797ac58cSKevin Wolf }; 1875797ac58cSKevin Wolf 18765bbd2e59SKevin Wolf static void reopen_help(void) 18775bbd2e59SKevin Wolf { 18785bbd2e59SKevin Wolf printf( 18795bbd2e59SKevin Wolf "\n" 18805bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 18815bbd2e59SKevin Wolf "\n" 18825bbd2e59SKevin Wolf " Example:\n" 18835bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 18845bbd2e59SKevin Wolf "\n" 18855bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 18865bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 18875bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 18885bbd2e59SKevin Wolf "\n"); 18895bbd2e59SKevin Wolf } 18905bbd2e59SKevin Wolf 18915bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 18925bbd2e59SKevin Wolf 18935bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 18945bbd2e59SKevin Wolf .name = "reopen", 18955bbd2e59SKevin Wolf .merge_lists = true, 18965bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 18975bbd2e59SKevin Wolf .desc = { 18985bbd2e59SKevin Wolf /* no elements => accept any params */ 18995bbd2e59SKevin Wolf { /* end of list */ } 19005bbd2e59SKevin Wolf }, 19015bbd2e59SKevin Wolf }; 19025bbd2e59SKevin Wolf 19035bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19045bbd2e59SKevin Wolf .name = "reopen", 19055bbd2e59SKevin Wolf .argmin = 0, 19065bbd2e59SKevin Wolf .argmax = -1, 19075bbd2e59SKevin Wolf .cfunc = reopen_f, 19085bbd2e59SKevin Wolf .args = "[-r] [-c cache] [-o options]", 19095bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19105bbd2e59SKevin Wolf .help = reopen_help, 19115bbd2e59SKevin Wolf }; 19125bbd2e59SKevin Wolf 19135bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 19145bbd2e59SKevin Wolf { 19155bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19165bbd2e59SKevin Wolf QemuOpts *qopts; 19175bbd2e59SKevin Wolf QDict *opts; 19185bbd2e59SKevin Wolf int c; 19195bbd2e59SKevin Wolf int flags = bs->open_flags; 192019dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 19215bbd2e59SKevin Wolf 19225bbd2e59SKevin Wolf BlockReopenQueue *brq; 19235bbd2e59SKevin Wolf Error *local_err = NULL; 19245bbd2e59SKevin Wolf 19255bbd2e59SKevin Wolf while ((c = getopt(argc, argv, "c:o:r")) != -1) { 19265bbd2e59SKevin Wolf switch (c) { 19275bbd2e59SKevin Wolf case 'c': 192819dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 19295bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 19305bbd2e59SKevin Wolf return 0; 19315bbd2e59SKevin Wolf } 19325bbd2e59SKevin Wolf break; 19335bbd2e59SKevin Wolf case 'o': 19345bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 19355bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19365bbd2e59SKevin Wolf return 0; 19375bbd2e59SKevin Wolf } 19385bbd2e59SKevin Wolf break; 19395bbd2e59SKevin Wolf case 'r': 19405bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 19415bbd2e59SKevin Wolf break; 19425bbd2e59SKevin Wolf default: 19435bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19445bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19455bbd2e59SKevin Wolf } 19465bbd2e59SKevin Wolf } 19475bbd2e59SKevin Wolf 19485bbd2e59SKevin Wolf if (optind != argc) { 19495bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19505bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19515bbd2e59SKevin Wolf } 19525bbd2e59SKevin Wolf 195319dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 195419dbecdcSKevin Wolf blk_get_attached_dev(blk)) 195519dbecdcSKevin Wolf { 195619dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 195719dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 195819dbecdcSKevin Wolf return 0; 195919dbecdcSKevin Wolf } 196019dbecdcSKevin Wolf 19615bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 19625bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 19635bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19645bbd2e59SKevin Wolf 19655bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 1966720150f3SPaolo Bonzini bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err); 19675bbd2e59SKevin Wolf if (local_err) { 19685bbd2e59SKevin Wolf error_report_err(local_err); 196919dbecdcSKevin Wolf } else { 197019dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 19715bbd2e59SKevin Wolf } 19725bbd2e59SKevin Wolf 19735bbd2e59SKevin Wolf return 0; 19745bbd2e59SKevin Wolf } 19755bbd2e59SKevin Wolf 19764c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 1977797ac58cSKevin Wolf { 1978797ac58cSKevin Wolf int ret; 1979797ac58cSKevin Wolf 19804c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 1981797ac58cSKevin Wolf if (ret < 0) { 1982797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 1983797ac58cSKevin Wolf } 1984797ac58cSKevin Wolf 1985797ac58cSKevin Wolf return 0; 1986797ac58cSKevin Wolf } 1987797ac58cSKevin Wolf 19884c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 19894cc70e93SFam Zheng { 19904cc70e93SFam Zheng int ret; 19914cc70e93SFam Zheng 19924c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 19934cc70e93SFam Zheng if (ret < 0) { 19944cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 19954cc70e93SFam Zheng } 19964cc70e93SFam Zheng 19974cc70e93SFam Zheng return 0; 19984cc70e93SFam Zheng } 19994cc70e93SFam Zheng 2000797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2001797ac58cSKevin Wolf .name = "break", 2002797ac58cSKevin Wolf .argmin = 2, 2003797ac58cSKevin Wolf .argmax = 2, 2004797ac58cSKevin Wolf .cfunc = break_f, 2005797ac58cSKevin Wolf .args = "event tag", 2006797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2007797ac58cSKevin Wolf "request as tag", 2008797ac58cSKevin Wolf }; 2009797ac58cSKevin Wolf 20104cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 20114cc70e93SFam Zheng .name = "remove_break", 20124cc70e93SFam Zheng .argmin = 1, 20134cc70e93SFam Zheng .argmax = 1, 20144cc70e93SFam Zheng .cfunc = remove_break_f, 20154cc70e93SFam Zheng .args = "tag", 20164cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 20174cc70e93SFam Zheng }; 20184cc70e93SFam Zheng 20194c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2020797ac58cSKevin Wolf { 2021797ac58cSKevin Wolf int ret; 2022797ac58cSKevin Wolf 20234c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2024797ac58cSKevin Wolf if (ret < 0) { 2025797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2026797ac58cSKevin Wolf } 2027797ac58cSKevin Wolf 2028797ac58cSKevin Wolf return 0; 2029797ac58cSKevin Wolf } 2030797ac58cSKevin Wolf 2031797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2032797ac58cSKevin Wolf .name = "resume", 2033797ac58cSKevin Wolf .argmin = 1, 2034797ac58cSKevin Wolf .argmax = 1, 2035797ac58cSKevin Wolf .cfunc = resume_f, 2036797ac58cSKevin Wolf .args = "tag", 2037797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2038797ac58cSKevin Wolf }; 2039797ac58cSKevin Wolf 20404c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2041797ac58cSKevin Wolf { 20424c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 20434c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2044797ac58cSKevin Wolf } 2045797ac58cSKevin Wolf 2046797ac58cSKevin Wolf return 0; 2047797ac58cSKevin Wolf } 2048797ac58cSKevin Wolf 2049797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2050797ac58cSKevin Wolf .name = "wait_break", 2051797ac58cSKevin Wolf .argmin = 1, 2052797ac58cSKevin Wolf .argmax = 1, 2053797ac58cSKevin Wolf .cfunc = wait_break_f, 2054797ac58cSKevin Wolf .args = "tag", 2055797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2056797ac58cSKevin Wolf }; 2057797ac58cSKevin Wolf 20584c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2059797ac58cSKevin Wolf { 2060797ac58cSKevin Wolf abort(); 2061797ac58cSKevin Wolf } 2062797ac58cSKevin Wolf 2063797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2064797ac58cSKevin Wolf .name = "abort", 2065797ac58cSKevin Wolf .cfunc = abort_f, 2066797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2067797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2068797ac58cSKevin Wolf }; 2069797ac58cSKevin Wolf 20700e82dc7bSMax Reitz static void sigraise_help(void) 20710e82dc7bSMax Reitz { 20720e82dc7bSMax Reitz printf( 20730e82dc7bSMax Reitz "\n" 20740e82dc7bSMax Reitz " raises the given signal\n" 20750e82dc7bSMax Reitz "\n" 20760e82dc7bSMax Reitz " Example:\n" 20770e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 20780e82dc7bSMax Reitz "\n" 20790e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 20800e82dc7bSMax Reitz " given to sigraise.\n" 20810e82dc7bSMax Reitz "\n", SIGTERM); 20820e82dc7bSMax Reitz } 20830e82dc7bSMax Reitz 20844c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 20850e82dc7bSMax Reitz 20860e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 20870e82dc7bSMax Reitz .name = "sigraise", 20880e82dc7bSMax Reitz .cfunc = sigraise_f, 20890e82dc7bSMax Reitz .argmin = 1, 20900e82dc7bSMax Reitz .argmax = 1, 20910e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 20920e82dc7bSMax Reitz .args = "signal", 20930e82dc7bSMax Reitz .oneline = "raises a signal", 20940e82dc7bSMax Reitz .help = sigraise_help, 20950e82dc7bSMax Reitz }; 20960e82dc7bSMax Reitz 20974c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 20980e82dc7bSMax Reitz { 20999b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 21000e82dc7bSMax Reitz if (sig < 0) { 2101a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 21020e82dc7bSMax Reitz return 0; 21039b0beaf3SJohn Snow } else if (sig > NSIG) { 21049b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 21059b0beaf3SJohn Snow argv[1]); 21069b0beaf3SJohn Snow return 0; 21070e82dc7bSMax Reitz } 21080e82dc7bSMax Reitz 21090e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 21100e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 21110e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 21120e82dc7bSMax Reitz fflush(stdout); 21130e82dc7bSMax Reitz fflush(stderr); 21140e82dc7bSMax Reitz 21150e82dc7bSMax Reitz raise(sig); 21160e82dc7bSMax Reitz return 0; 21170e82dc7bSMax Reitz } 21180e82dc7bSMax Reitz 2119cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2120cd33d02aSKevin Wolf { 2121cd33d02aSKevin Wolf bool *expired = opaque; 2122cd33d02aSKevin Wolf *expired = true; 2123cd33d02aSKevin Wolf } 2124cd33d02aSKevin Wolf 21254c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2126cd33d02aSKevin Wolf { 2127cd33d02aSKevin Wolf char *endptr; 2128cd33d02aSKevin Wolf long ms; 2129cd33d02aSKevin Wolf struct QEMUTimer *timer; 2130cd33d02aSKevin Wolf bool expired = false; 2131cd33d02aSKevin Wolf 2132cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2133cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2134cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2135cd33d02aSKevin Wolf return 0; 2136cd33d02aSKevin Wolf } 2137cd33d02aSKevin Wolf 2138cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2139cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2140cd33d02aSKevin Wolf 2141cd33d02aSKevin Wolf while (!expired) { 2142cd33d02aSKevin Wolf main_loop_wait(false); 2143cd33d02aSKevin Wolf } 2144cd33d02aSKevin Wolf 2145cd33d02aSKevin Wolf timer_free(timer); 2146cd33d02aSKevin Wolf 2147cd33d02aSKevin Wolf return 0; 2148cd33d02aSKevin Wolf } 2149cd33d02aSKevin Wolf 2150cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2151cd33d02aSKevin Wolf .name = "sleep", 2152cd33d02aSKevin Wolf .argmin = 1, 2153cd33d02aSKevin Wolf .argmax = 1, 2154cd33d02aSKevin Wolf .cfunc = sleep_f, 2155cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2156cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2157cd33d02aSKevin Wolf }; 2158cd33d02aSKevin Wolf 2159f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2160f18a834aSKevin Wolf { 2161f18a834aSKevin Wolf if (cmd) { 2162f18a834aSKevin Wolf printf("%s ", cmd); 2163f18a834aSKevin Wolf } else { 2164f18a834aSKevin Wolf printf("%s ", ct->name); 2165f18a834aSKevin Wolf if (ct->altname) { 2166f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2167f18a834aSKevin Wolf } 2168f18a834aSKevin Wolf } 2169f18a834aSKevin Wolf 2170f18a834aSKevin Wolf if (ct->args) { 2171f18a834aSKevin Wolf printf("%s ", ct->args); 2172f18a834aSKevin Wolf } 2173f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2174f18a834aSKevin Wolf } 2175f18a834aSKevin Wolf 2176f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2177f18a834aSKevin Wolf { 2178f18a834aSKevin Wolf help_oneline(cmd, ct); 2179f18a834aSKevin Wolf if (ct->help) { 2180f18a834aSKevin Wolf ct->help(); 2181f18a834aSKevin Wolf } 2182f18a834aSKevin Wolf } 2183f18a834aSKevin Wolf 2184f18a834aSKevin Wolf static void help_all(void) 2185f18a834aSKevin Wolf { 2186f18a834aSKevin Wolf const cmdinfo_t *ct; 2187f18a834aSKevin Wolf 2188f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2189f18a834aSKevin Wolf help_oneline(ct->name, ct); 2190f18a834aSKevin Wolf } 2191f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2192f18a834aSKevin Wolf } 2193f18a834aSKevin Wolf 21944c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2195f18a834aSKevin Wolf { 2196f18a834aSKevin Wolf const cmdinfo_t *ct; 2197f18a834aSKevin Wolf 2198f18a834aSKevin Wolf if (argc == 1) { 2199f18a834aSKevin Wolf help_all(); 2200f18a834aSKevin Wolf return 0; 2201f18a834aSKevin Wolf } 2202f18a834aSKevin Wolf 2203f18a834aSKevin Wolf ct = find_command(argv[1]); 2204f18a834aSKevin Wolf if (ct == NULL) { 2205f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2206f18a834aSKevin Wolf return 0; 2207f18a834aSKevin Wolf } 2208f18a834aSKevin Wolf 2209f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2210f18a834aSKevin Wolf return 0; 2211f18a834aSKevin Wolf } 2212f18a834aSKevin Wolf 2213f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2214f18a834aSKevin Wolf .name = "help", 2215f18a834aSKevin Wolf .altname = "?", 2216f18a834aSKevin Wolf .cfunc = help_f, 2217f18a834aSKevin Wolf .argmin = 0, 2218f18a834aSKevin Wolf .argmax = 1, 2219f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2220f18a834aSKevin Wolf .args = "[command]", 2221f18a834aSKevin Wolf .oneline = "help for one or all commands", 2222f18a834aSKevin Wolf }; 2223f18a834aSKevin Wolf 22244c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2225dd583296SKevin Wolf { 222615afd94aSPaolo Bonzini AioContext *ctx; 2227dd583296SKevin Wolf char *input; 2228dd583296SKevin Wolf const cmdinfo_t *ct; 2229dd583296SKevin Wolf char **v; 2230dd583296SKevin Wolf int c; 2231dd583296SKevin Wolf bool done = false; 2232dd583296SKevin Wolf 2233dd583296SKevin Wolf input = g_strdup(cmd); 2234dd583296SKevin Wolf v = breakline(input, &c); 2235dd583296SKevin Wolf if (c) { 2236dd583296SKevin Wolf ct = find_command(v[0]); 2237dd583296SKevin Wolf if (ct) { 223815afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 223915afd94aSPaolo Bonzini aio_context_acquire(ctx); 22404c7b7e9bSMax Reitz done = command(blk, ct, c, v); 224115afd94aSPaolo Bonzini aio_context_release(ctx); 2242dd583296SKevin Wolf } else { 2243dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2244dd583296SKevin Wolf } 2245dd583296SKevin Wolf } 2246dd583296SKevin Wolf g_free(input); 2247dd583296SKevin Wolf g_free(v); 2248dd583296SKevin Wolf 2249dd583296SKevin Wolf return done; 2250dd583296SKevin Wolf } 2251dd583296SKevin Wolf 2252797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2253797ac58cSKevin Wolf { 2254797ac58cSKevin Wolf /* initialize commands */ 2255c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2256c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2257c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2258c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2259c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2260c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2261c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2262c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2263c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2264c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2265c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2266c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2267c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2268c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2269c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 22705bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2271c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 22724cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2273c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2274c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2275c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2276cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 22770e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2278797ac58cSKevin Wolf } 2279