1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4797ac58cSKevin Wolf * Copyright (C) 2009 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 113d21994fSKevin Wolf #include "qemu-io.h" 124c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 134c7b7e9bSMax Reitz #include "block/block.h" 144c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 15a8d8ecb7SMax Reitz #include "block/qapi.h" 16d49b6836SMarkus Armbruster #include "qemu/error-report.h" 176a1751b7SAlex Bligh #include "qemu/main-loop.h" 18cd33d02aSKevin Wolf #include "qemu/timer.h" 19a91f9584SFam Zheng #include "sysemu/block-backend.h" 20797ac58cSKevin Wolf 21797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 22797ac58cSKevin Wolf 23f9883880SStefan Weil bool qemuio_misalign; 24797ac58cSKevin Wolf 25c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 26c2cdf5c5SKevin Wolf static int ncmds; 27c2cdf5c5SKevin Wolf 28c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 29c2cdf5c5SKevin Wolf { 30c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 31c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 32c2cdf5c5SKevin Wolf } 33c2cdf5c5SKevin Wolf 34c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 35c2cdf5c5SKevin Wolf { 3602c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 37c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 38c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 39c2cdf5c5SKevin Wolf } 40c2cdf5c5SKevin Wolf 41c2cdf5c5SKevin Wolf int qemuio_command_usage(const cmdinfo_t *ci) 42c2cdf5c5SKevin Wolf { 43c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 44c2cdf5c5SKevin Wolf return 0; 45c2cdf5c5SKevin Wolf } 46c2cdf5c5SKevin Wolf 474c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 48c2cdf5c5SKevin Wolf { 49c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 50c2cdf5c5SKevin Wolf return 1; 51c2cdf5c5SKevin Wolf } 524c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 53c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 54c2cdf5c5SKevin Wolf return 0; 55c2cdf5c5SKevin Wolf } 56c2cdf5c5SKevin Wolf return 1; 57c2cdf5c5SKevin Wolf } 58c2cdf5c5SKevin Wolf 594c7b7e9bSMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 603d21994fSKevin Wolf char **argv) 61c2cdf5c5SKevin Wolf { 62c2cdf5c5SKevin Wolf char *cmd = argv[0]; 63c2cdf5c5SKevin Wolf 644c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 65c2cdf5c5SKevin Wolf return 0; 66c2cdf5c5SKevin Wolf } 67c2cdf5c5SKevin Wolf 68c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 69c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 70c2cdf5c5SKevin Wolf fprintf(stderr, 71c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 72c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 73c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 74c2cdf5c5SKevin Wolf fprintf(stderr, 75c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 76c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 77c2cdf5c5SKevin Wolf } else { 78c2cdf5c5SKevin Wolf fprintf(stderr, 79c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 80c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 81c2cdf5c5SKevin Wolf } 82c2cdf5c5SKevin Wolf return 0; 83c2cdf5c5SKevin Wolf } 84c2cdf5c5SKevin Wolf optind = 0; 854c7b7e9bSMax Reitz return ct->cfunc(blk, argc, argv); 86c2cdf5c5SKevin Wolf } 87c2cdf5c5SKevin Wolf 88c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 89c2cdf5c5SKevin Wolf { 90c2cdf5c5SKevin Wolf cmdinfo_t *ct; 91c2cdf5c5SKevin Wolf 92c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 93c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 94c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 95c2cdf5c5SKevin Wolf { 96c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 97c2cdf5c5SKevin Wolf } 98c2cdf5c5SKevin Wolf } 99c2cdf5c5SKevin Wolf return NULL; 100c2cdf5c5SKevin Wolf } 101c2cdf5c5SKevin Wolf 1024694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1034694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1044694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1054694020dSStefan Hajnoczi void *opaque) 1064694020dSStefan Hajnoczi { 1074694020dSStefan Hajnoczi cmdinfo_t *ct; 1084694020dSStefan Hajnoczi size_t input_len = strlen(input); 1094694020dSStefan Hajnoczi 1104694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1114694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1124694020dSStefan Hajnoczi fn(ct->name, opaque); 1134694020dSStefan Hajnoczi } 1144694020dSStefan Hajnoczi } 1154694020dSStefan Hajnoczi } 1164694020dSStefan Hajnoczi 117c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 118c2cdf5c5SKevin Wolf { 119c2cdf5c5SKevin Wolf int c = 0; 120c2cdf5c5SKevin Wolf char *p; 1215839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 122c2cdf5c5SKevin Wolf 123c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 124c2cdf5c5SKevin Wolf if (!*p) { 125c2cdf5c5SKevin Wolf continue; 126c2cdf5c5SKevin Wolf } 127c2cdf5c5SKevin Wolf c++; 12808193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 129c2cdf5c5SKevin Wolf rval[c - 1] = p; 130c2cdf5c5SKevin Wolf rval[c] = NULL; 131c2cdf5c5SKevin Wolf } 132c2cdf5c5SKevin Wolf *count = c; 133c2cdf5c5SKevin Wolf return rval; 134c2cdf5c5SKevin Wolf } 135c2cdf5c5SKevin Wolf 136797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 137797ac58cSKevin Wolf { 138797ac58cSKevin Wolf char *end; 139797ac58cSKevin Wolf return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B); 140797ac58cSKevin Wolf } 141797ac58cSKevin Wolf 1420b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 1430b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 1440b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 1450b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 1460b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 1470b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 1480b613881SKevin Wolf 1490b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 1500b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 1510b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 1520b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 1530b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 1540b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 1550b613881SKevin Wolf 1560b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 1570b613881SKevin Wolf { 1580b613881SKevin Wolf char *trim; 1590b613881SKevin Wolf const char *suffix; 1600b613881SKevin Wolf 1610b613881SKevin Wolf if (value >= EXABYTES(1)) { 1620b613881SKevin Wolf suffix = " EiB"; 1630b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 1640b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 1650b613881SKevin Wolf suffix = " PiB"; 1660b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 1670b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 1680b613881SKevin Wolf suffix = " TiB"; 1690b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 1700b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 1710b613881SKevin Wolf suffix = " GiB"; 1720b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 1730b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 1740b613881SKevin Wolf suffix = " MiB"; 1750b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 1760b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 1770b613881SKevin Wolf suffix = " KiB"; 1780b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 1790b613881SKevin Wolf } else { 1800b613881SKevin Wolf suffix = " bytes"; 1810b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 1820b613881SKevin Wolf } 1830b613881SKevin Wolf 1840b613881SKevin Wolf trim = strstr(str, ".000"); 1850b613881SKevin Wolf if (trim) { 1860b613881SKevin Wolf strcpy(trim, suffix); 1870b613881SKevin Wolf } else { 1880b613881SKevin Wolf strcat(str, suffix); 1890b613881SKevin Wolf } 1900b613881SKevin Wolf } 1910b613881SKevin Wolf 1920b613881SKevin Wolf 1930b613881SKevin Wolf 1940b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 1950b613881SKevin Wolf { 1960b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 1970b613881SKevin Wolf if (t1.tv_usec < 0) { 1980b613881SKevin Wolf t1.tv_usec += 1000000; 1990b613881SKevin Wolf t1.tv_sec--; 2000b613881SKevin Wolf } 2010b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2020b613881SKevin Wolf return t1; 2030b613881SKevin Wolf } 2040b613881SKevin Wolf 2050b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2060b613881SKevin Wolf { 2070b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2080b613881SKevin Wolf } 2090b613881SKevin Wolf 2100b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2110b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2120b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2130b613881SKevin Wolf 2140b613881SKevin Wolf enum { 2150b613881SKevin Wolf DEFAULT_TIME = 0x0, 2160b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2170b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2180b613881SKevin Wolf }; 2190b613881SKevin Wolf 2200b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2210b613881SKevin Wolf { 2220b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2230b613881SKevin Wolf 2240b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2250b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2260b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2270b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2280b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2290b613881SKevin Wolf (unsigned int) (usec * 100)); 2300b613881SKevin Wolf return; 2310b613881SKevin Wolf } 2320b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2330b613881SKevin Wolf } 2340b613881SKevin Wolf 2350b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2360b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2370b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2380b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2390b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2400b613881SKevin Wolf (unsigned int) (usec * 100)); 2410b613881SKevin Wolf } else { 2420b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 2430b613881SKevin Wolf } 2440b613881SKevin Wolf } 2450b613881SKevin Wolf 246797ac58cSKevin Wolf /* 247797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 248797ac58cSKevin Wolf * 249797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 250797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 251797ac58cSKevin Wolf */ 252797ac58cSKevin Wolf static int parse_pattern(const char *arg) 253797ac58cSKevin Wolf { 254797ac58cSKevin Wolf char *endptr = NULL; 255797ac58cSKevin Wolf long pattern; 256797ac58cSKevin Wolf 257797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 258797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 259797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 260797ac58cSKevin Wolf return -1; 261797ac58cSKevin Wolf } 262797ac58cSKevin Wolf 263797ac58cSKevin Wolf return pattern; 264797ac58cSKevin Wolf } 265797ac58cSKevin Wolf 266797ac58cSKevin Wolf /* 267797ac58cSKevin Wolf * Memory allocation helpers. 268797ac58cSKevin Wolf * 269797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 270797ac58cSKevin Wolf * that is specified on the command line. 271797ac58cSKevin Wolf */ 272797ac58cSKevin Wolf 273797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 2744c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 275797ac58cSKevin Wolf { 276797ac58cSKevin Wolf void *buf; 277797ac58cSKevin Wolf 278797ac58cSKevin Wolf if (qemuio_misalign) { 279797ac58cSKevin Wolf len += MISALIGN_OFFSET; 280797ac58cSKevin Wolf } 2814c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 282797ac58cSKevin Wolf memset(buf, pattern, len); 283797ac58cSKevin Wolf if (qemuio_misalign) { 284797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 285797ac58cSKevin Wolf } 286797ac58cSKevin Wolf return buf; 287797ac58cSKevin Wolf } 288797ac58cSKevin Wolf 289797ac58cSKevin Wolf static void qemu_io_free(void *p) 290797ac58cSKevin Wolf { 291797ac58cSKevin Wolf if (qemuio_misalign) { 292797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 293797ac58cSKevin Wolf } 294797ac58cSKevin Wolf qemu_vfree(p); 295797ac58cSKevin Wolf } 296797ac58cSKevin Wolf 297797ac58cSKevin Wolf static void dump_buffer(const void *buffer, int64_t offset, int len) 298797ac58cSKevin Wolf { 299797ac58cSKevin Wolf int i, j; 300797ac58cSKevin Wolf const uint8_t *p; 301797ac58cSKevin Wolf 302797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 303797ac58cSKevin Wolf const uint8_t *s = p; 304797ac58cSKevin Wolf 305797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 306797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 307797ac58cSKevin Wolf printf("%02x ", *p); 308797ac58cSKevin Wolf } 309797ac58cSKevin Wolf printf(" "); 310797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 311797ac58cSKevin Wolf if (isalnum(*s)) { 312797ac58cSKevin Wolf printf("%c", *s); 313797ac58cSKevin Wolf } else { 314797ac58cSKevin Wolf printf("."); 315797ac58cSKevin Wolf } 316797ac58cSKevin Wolf } 317797ac58cSKevin Wolf printf("\n"); 318797ac58cSKevin Wolf } 319797ac58cSKevin Wolf } 320797ac58cSKevin Wolf 321797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 322797ac58cSKevin Wolf int count, int total, int cnt, int Cflag) 323797ac58cSKevin Wolf { 324797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 325797ac58cSKevin Wolf 326797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 327797ac58cSKevin Wolf if (!Cflag) { 328797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 329797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 330797ac58cSKevin Wolf printf("%s %d/%d bytes at offset %" PRId64 "\n", 331797ac58cSKevin Wolf op, total, count, offset); 332797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 333797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 334797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 335797ac58cSKevin Wolf printf("%d,%d,%s,%.3f,%.3f\n", 336797ac58cSKevin Wolf total, cnt, ts, 337797ac58cSKevin Wolf tdiv((double)total, *t), 338797ac58cSKevin Wolf tdiv((double)cnt, *t)); 339797ac58cSKevin Wolf } 340797ac58cSKevin Wolf } 341797ac58cSKevin Wolf 342797ac58cSKevin Wolf /* 343797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 344797ac58cSKevin Wolf * vector matching it. 345797ac58cSKevin Wolf */ 346797ac58cSKevin Wolf static void * 3474c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 348797ac58cSKevin Wolf int pattern) 349797ac58cSKevin Wolf { 350797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 351797ac58cSKevin Wolf size_t count = 0; 352797ac58cSKevin Wolf void *buf = NULL; 353797ac58cSKevin Wolf void *p; 354797ac58cSKevin Wolf int i; 355797ac58cSKevin Wolf 356797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 357797ac58cSKevin Wolf char *arg = argv[i]; 358797ac58cSKevin Wolf int64_t len; 359797ac58cSKevin Wolf 360797ac58cSKevin Wolf len = cvtnum(arg); 361797ac58cSKevin Wolf if (len < 0) { 362797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", arg); 363797ac58cSKevin Wolf goto fail; 364797ac58cSKevin Wolf } 365797ac58cSKevin Wolf 366797ac58cSKevin Wolf /* should be SIZE_T_MAX, but that doesn't exist */ 367797ac58cSKevin Wolf if (len > INT_MAX) { 368797ac58cSKevin Wolf printf("too large length argument -- %s\n", arg); 369797ac58cSKevin Wolf goto fail; 370797ac58cSKevin Wolf } 371797ac58cSKevin Wolf 372797ac58cSKevin Wolf if (len & 0x1ff) { 373797ac58cSKevin Wolf printf("length argument %" PRId64 374797ac58cSKevin Wolf " is not sector aligned\n", len); 375797ac58cSKevin Wolf goto fail; 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf 378797ac58cSKevin Wolf sizes[i] = len; 379797ac58cSKevin Wolf count += len; 380797ac58cSKevin Wolf } 381797ac58cSKevin Wolf 382797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 383797ac58cSKevin Wolf 3844c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 385797ac58cSKevin Wolf 386797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 387797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 388797ac58cSKevin Wolf p += sizes[i]; 389797ac58cSKevin Wolf } 390797ac58cSKevin Wolf 391797ac58cSKevin Wolf fail: 392797ac58cSKevin Wolf g_free(sizes); 393797ac58cSKevin Wolf return buf; 394797ac58cSKevin Wolf } 395797ac58cSKevin Wolf 3964c7b7e9bSMax Reitz static int do_read(BlockBackend *blk, char *buf, int64_t offset, int count, 397797ac58cSKevin Wolf int *total) 398797ac58cSKevin Wolf { 399797ac58cSKevin Wolf int ret; 400797ac58cSKevin Wolf 4014c7b7e9bSMax Reitz ret = blk_read(blk, offset >> 9, (uint8_t *)buf, count >> 9); 402797ac58cSKevin Wolf if (ret < 0) { 403797ac58cSKevin Wolf return ret; 404797ac58cSKevin Wolf } 405797ac58cSKevin Wolf *total = count; 406797ac58cSKevin Wolf return 1; 407797ac58cSKevin Wolf } 408797ac58cSKevin Wolf 4094c7b7e9bSMax Reitz static int do_write(BlockBackend *blk, char *buf, int64_t offset, int count, 410797ac58cSKevin Wolf int *total) 411797ac58cSKevin Wolf { 412797ac58cSKevin Wolf int ret; 413797ac58cSKevin Wolf 4144c7b7e9bSMax Reitz ret = blk_write(blk, offset >> 9, (uint8_t *)buf, count >> 9); 415797ac58cSKevin Wolf if (ret < 0) { 416797ac58cSKevin Wolf return ret; 417797ac58cSKevin Wolf } 418797ac58cSKevin Wolf *total = count; 419797ac58cSKevin Wolf return 1; 420797ac58cSKevin Wolf } 421797ac58cSKevin Wolf 4224c7b7e9bSMax Reitz static int do_pread(BlockBackend *blk, char *buf, int64_t offset, int count, 423797ac58cSKevin Wolf int *total) 424797ac58cSKevin Wolf { 4254c7b7e9bSMax Reitz *total = blk_pread(blk, offset, (uint8_t *)buf, count); 426797ac58cSKevin Wolf if (*total < 0) { 427797ac58cSKevin Wolf return *total; 428797ac58cSKevin Wolf } 429797ac58cSKevin Wolf return 1; 430797ac58cSKevin Wolf } 431797ac58cSKevin Wolf 4324c7b7e9bSMax Reitz static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, int count, 433797ac58cSKevin Wolf int *total) 434797ac58cSKevin Wolf { 4354c7b7e9bSMax Reitz *total = blk_pwrite(blk, offset, (uint8_t *)buf, count); 436797ac58cSKevin Wolf if (*total < 0) { 437797ac58cSKevin Wolf return *total; 438797ac58cSKevin Wolf } 439797ac58cSKevin Wolf return 1; 440797ac58cSKevin Wolf } 441797ac58cSKevin Wolf 442797ac58cSKevin Wolf typedef struct { 4434c7b7e9bSMax Reitz BlockBackend *blk; 444797ac58cSKevin Wolf int64_t offset; 445797ac58cSKevin Wolf int count; 446797ac58cSKevin Wolf int *total; 447797ac58cSKevin Wolf int ret; 448797ac58cSKevin Wolf bool done; 449797ac58cSKevin Wolf } CoWriteZeroes; 450797ac58cSKevin Wolf 451797ac58cSKevin Wolf static void coroutine_fn co_write_zeroes_entry(void *opaque) 452797ac58cSKevin Wolf { 453797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 454797ac58cSKevin Wolf 4554c7b7e9bSMax Reitz data->ret = blk_co_write_zeroes(data->blk, data->offset / BDRV_SECTOR_SIZE, 456aa7bfbffSPeter Lieven data->count / BDRV_SECTOR_SIZE, 0); 457797ac58cSKevin Wolf data->done = true; 458797ac58cSKevin Wolf if (data->ret < 0) { 459797ac58cSKevin Wolf *data->total = data->ret; 460797ac58cSKevin Wolf return; 461797ac58cSKevin Wolf } 462797ac58cSKevin Wolf 463797ac58cSKevin Wolf *data->total = data->count; 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf 4664c7b7e9bSMax Reitz static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int count, 467797ac58cSKevin Wolf int *total) 468797ac58cSKevin Wolf { 469797ac58cSKevin Wolf Coroutine *co; 470797ac58cSKevin Wolf CoWriteZeroes data = { 4714c7b7e9bSMax Reitz .blk = blk, 472797ac58cSKevin Wolf .offset = offset, 473797ac58cSKevin Wolf .count = count, 474797ac58cSKevin Wolf .total = total, 475797ac58cSKevin Wolf .done = false, 476797ac58cSKevin Wolf }; 477797ac58cSKevin Wolf 478797ac58cSKevin Wolf co = qemu_coroutine_create(co_write_zeroes_entry); 479797ac58cSKevin Wolf qemu_coroutine_enter(co, &data); 480797ac58cSKevin Wolf while (!data.done) { 4814c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 482797ac58cSKevin Wolf } 483797ac58cSKevin Wolf if (data.ret < 0) { 484797ac58cSKevin Wolf return data.ret; 485797ac58cSKevin Wolf } else { 486797ac58cSKevin Wolf return 1; 487797ac58cSKevin Wolf } 488797ac58cSKevin Wolf } 489797ac58cSKevin Wolf 4904c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 491797ac58cSKevin Wolf int count, int *total) 492797ac58cSKevin Wolf { 493797ac58cSKevin Wolf int ret; 494797ac58cSKevin Wolf 4954c7b7e9bSMax Reitz ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9); 496797ac58cSKevin Wolf if (ret < 0) { 497797ac58cSKevin Wolf return ret; 498797ac58cSKevin Wolf } 499797ac58cSKevin Wolf *total = count; 500797ac58cSKevin Wolf return 1; 501797ac58cSKevin Wolf } 502797ac58cSKevin Wolf 5034c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 504797ac58cSKevin Wolf int count, int *total) 505797ac58cSKevin Wolf { 5064c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 507797ac58cSKevin Wolf if (*total < 0) { 508797ac58cSKevin Wolf return *total; 509797ac58cSKevin Wolf } 510797ac58cSKevin Wolf return 1; 511797ac58cSKevin Wolf } 512797ac58cSKevin Wolf 5134c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 514797ac58cSKevin Wolf int count, int *total) 515797ac58cSKevin Wolf { 5164c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 517797ac58cSKevin Wolf if (*total < 0) { 518797ac58cSKevin Wolf return *total; 519797ac58cSKevin Wolf } 520797ac58cSKevin Wolf return 1; 521797ac58cSKevin Wolf } 522797ac58cSKevin Wolf 523797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 524797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 525797ac58cSKevin Wolf { 526797ac58cSKevin Wolf *(int *)opaque = ret; 527797ac58cSKevin Wolf } 528797ac58cSKevin Wolf 5294c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 530797ac58cSKevin Wolf int64_t offset, int *total) 531797ac58cSKevin Wolf { 532797ac58cSKevin Wolf int async_ret = NOT_DONE; 533797ac58cSKevin Wolf 5344c7b7e9bSMax Reitz blk_aio_readv(blk, offset >> 9, qiov, qiov->size >> 9, 535797ac58cSKevin Wolf aio_rw_done, &async_ret); 536797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 537797ac58cSKevin Wolf main_loop_wait(false); 538797ac58cSKevin Wolf } 539797ac58cSKevin Wolf 540797ac58cSKevin Wolf *total = qiov->size; 541797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 542797ac58cSKevin Wolf } 543797ac58cSKevin Wolf 5444c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 545797ac58cSKevin Wolf int64_t offset, int *total) 546797ac58cSKevin Wolf { 547797ac58cSKevin Wolf int async_ret = NOT_DONE; 548797ac58cSKevin Wolf 5494c7b7e9bSMax Reitz blk_aio_writev(blk, offset >> 9, qiov, qiov->size >> 9, 550797ac58cSKevin Wolf aio_rw_done, &async_ret); 551797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 552797ac58cSKevin Wolf main_loop_wait(false); 553797ac58cSKevin Wolf } 554797ac58cSKevin Wolf 555797ac58cSKevin Wolf *total = qiov->size; 556797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 557797ac58cSKevin Wolf } 558797ac58cSKevin Wolf 559797ac58cSKevin Wolf struct multiwrite_async_ret { 560797ac58cSKevin Wolf int num_done; 561797ac58cSKevin Wolf int error; 562797ac58cSKevin Wolf }; 563797ac58cSKevin Wolf 564797ac58cSKevin Wolf static void multiwrite_cb(void *opaque, int ret) 565797ac58cSKevin Wolf { 566797ac58cSKevin Wolf struct multiwrite_async_ret *async_ret = opaque; 567797ac58cSKevin Wolf 568797ac58cSKevin Wolf async_ret->num_done++; 569797ac58cSKevin Wolf if (ret < 0) { 570797ac58cSKevin Wolf async_ret->error = ret; 571797ac58cSKevin Wolf } 572797ac58cSKevin Wolf } 573797ac58cSKevin Wolf 5744c7b7e9bSMax Reitz static int do_aio_multiwrite(BlockBackend *blk, BlockRequest* reqs, 575797ac58cSKevin Wolf int num_reqs, int *total) 576797ac58cSKevin Wolf { 577797ac58cSKevin Wolf int i, ret; 578797ac58cSKevin Wolf struct multiwrite_async_ret async_ret = { 579797ac58cSKevin Wolf .num_done = 0, 580797ac58cSKevin Wolf .error = 0, 581797ac58cSKevin Wolf }; 582797ac58cSKevin Wolf 583797ac58cSKevin Wolf *total = 0; 584797ac58cSKevin Wolf for (i = 0; i < num_reqs; i++) { 585797ac58cSKevin Wolf reqs[i].cb = multiwrite_cb; 586797ac58cSKevin Wolf reqs[i].opaque = &async_ret; 587797ac58cSKevin Wolf *total += reqs[i].qiov->size; 588797ac58cSKevin Wolf } 589797ac58cSKevin Wolf 5904c7b7e9bSMax Reitz ret = blk_aio_multiwrite(blk, reqs, num_reqs); 591797ac58cSKevin Wolf if (ret < 0) { 592797ac58cSKevin Wolf return ret; 593797ac58cSKevin Wolf } 594797ac58cSKevin Wolf 595797ac58cSKevin Wolf while (async_ret.num_done < num_reqs) { 596797ac58cSKevin Wolf main_loop_wait(false); 597797ac58cSKevin Wolf } 598797ac58cSKevin Wolf 599797ac58cSKevin Wolf return async_ret.error < 0 ? async_ret.error : 1; 600797ac58cSKevin Wolf } 601797ac58cSKevin Wolf 602797ac58cSKevin Wolf static void read_help(void) 603797ac58cSKevin Wolf { 604797ac58cSKevin Wolf printf( 605797ac58cSKevin Wolf "\n" 606797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 607797ac58cSKevin Wolf "\n" 608797ac58cSKevin Wolf " Example:\n" 609797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 610797ac58cSKevin Wolf "\n" 611797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 612797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 613797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 614797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 615797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 6164c7b7e9bSMax Reitz " -p, -- use blk_pread to read the file\n" 617797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 618797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 619797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 620797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 621797ac58cSKevin Wolf "\n"); 622797ac58cSKevin Wolf } 623797ac58cSKevin Wolf 6244c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 625797ac58cSKevin Wolf 626797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 627797ac58cSKevin Wolf .name = "read", 628797ac58cSKevin Wolf .altname = "r", 629797ac58cSKevin Wolf .cfunc = read_f, 630797ac58cSKevin Wolf .argmin = 2, 631797ac58cSKevin Wolf .argmax = -1, 632797ac58cSKevin Wolf .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len", 633797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 634797ac58cSKevin Wolf .help = read_help, 635797ac58cSKevin Wolf }; 636797ac58cSKevin Wolf 6374c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 638797ac58cSKevin Wolf { 639797ac58cSKevin Wolf struct timeval t1, t2; 640797ac58cSKevin Wolf int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; 641797ac58cSKevin Wolf int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; 642797ac58cSKevin Wolf int c, cnt; 643797ac58cSKevin Wolf char *buf; 644797ac58cSKevin Wolf int64_t offset; 645797ac58cSKevin Wolf int count; 646797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 647797ac58cSKevin Wolf int total = 0; 648797ac58cSKevin Wolf int pattern = 0, pattern_offset = 0, pattern_count = 0; 649797ac58cSKevin Wolf 650b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 651797ac58cSKevin Wolf switch (c) { 652797ac58cSKevin Wolf case 'b': 653797ac58cSKevin Wolf bflag = 1; 654797ac58cSKevin Wolf break; 655797ac58cSKevin Wolf case 'C': 656797ac58cSKevin Wolf Cflag = 1; 657797ac58cSKevin Wolf break; 658797ac58cSKevin Wolf case 'l': 659797ac58cSKevin Wolf lflag = 1; 660797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 661797ac58cSKevin Wolf if (pattern_count < 0) { 662797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", optarg); 663797ac58cSKevin Wolf return 0; 664797ac58cSKevin Wolf } 665797ac58cSKevin Wolf break; 666797ac58cSKevin Wolf case 'p': 667797ac58cSKevin Wolf pflag = 1; 668797ac58cSKevin Wolf break; 669797ac58cSKevin Wolf case 'P': 670797ac58cSKevin Wolf Pflag = 1; 671797ac58cSKevin Wolf pattern = parse_pattern(optarg); 672797ac58cSKevin Wolf if (pattern < 0) { 673797ac58cSKevin Wolf return 0; 674797ac58cSKevin Wolf } 675797ac58cSKevin Wolf break; 676797ac58cSKevin Wolf case 'q': 677797ac58cSKevin Wolf qflag = 1; 678797ac58cSKevin Wolf break; 679797ac58cSKevin Wolf case 's': 680797ac58cSKevin Wolf sflag = 1; 681797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 682797ac58cSKevin Wolf if (pattern_offset < 0) { 683797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", optarg); 684797ac58cSKevin Wolf return 0; 685797ac58cSKevin Wolf } 686797ac58cSKevin Wolf break; 687797ac58cSKevin Wolf case 'v': 688797ac58cSKevin Wolf vflag = 1; 689797ac58cSKevin Wolf break; 690797ac58cSKevin Wolf default: 691c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 692797ac58cSKevin Wolf } 693797ac58cSKevin Wolf } 694797ac58cSKevin Wolf 695797ac58cSKevin Wolf if (optind != argc - 2) { 696c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 697797ac58cSKevin Wolf } 698797ac58cSKevin Wolf 699797ac58cSKevin Wolf if (bflag && pflag) { 700797ac58cSKevin Wolf printf("-b and -p cannot be specified at the same time\n"); 701797ac58cSKevin Wolf return 0; 702797ac58cSKevin Wolf } 703797ac58cSKevin Wolf 704797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 705797ac58cSKevin Wolf if (offset < 0) { 706797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 707797ac58cSKevin Wolf return 0; 708797ac58cSKevin Wolf } 709797ac58cSKevin Wolf 710797ac58cSKevin Wolf optind++; 711797ac58cSKevin Wolf count = cvtnum(argv[optind]); 712797ac58cSKevin Wolf if (count < 0) { 713797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 714797ac58cSKevin Wolf return 0; 715797ac58cSKevin Wolf } 716797ac58cSKevin Wolf 717797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 718c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 719797ac58cSKevin Wolf } 720797ac58cSKevin Wolf 721797ac58cSKevin Wolf if (!lflag) { 722797ac58cSKevin Wolf pattern_count = count - pattern_offset; 723797ac58cSKevin Wolf } 724797ac58cSKevin Wolf 725797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 726797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 727797ac58cSKevin Wolf return 0; 728797ac58cSKevin Wolf } 729797ac58cSKevin Wolf 730797ac58cSKevin Wolf if (!pflag) { 731797ac58cSKevin Wolf if (offset & 0x1ff) { 732797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 733797ac58cSKevin Wolf offset); 734797ac58cSKevin Wolf return 0; 735797ac58cSKevin Wolf } 736797ac58cSKevin Wolf if (count & 0x1ff) { 737797ac58cSKevin Wolf printf("count %d is not sector aligned\n", 738797ac58cSKevin Wolf count); 739797ac58cSKevin Wolf return 0; 740797ac58cSKevin Wolf } 741797ac58cSKevin Wolf } 742797ac58cSKevin Wolf 7434c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 744797ac58cSKevin Wolf 745797ac58cSKevin Wolf gettimeofday(&t1, NULL); 746797ac58cSKevin Wolf if (pflag) { 7474c7b7e9bSMax Reitz cnt = do_pread(blk, buf, offset, count, &total); 748797ac58cSKevin Wolf } else if (bflag) { 7494c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 750797ac58cSKevin Wolf } else { 7514c7b7e9bSMax Reitz cnt = do_read(blk, buf, offset, count, &total); 752797ac58cSKevin Wolf } 753797ac58cSKevin Wolf gettimeofday(&t2, NULL); 754797ac58cSKevin Wolf 755797ac58cSKevin Wolf if (cnt < 0) { 756797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 757797ac58cSKevin Wolf goto out; 758797ac58cSKevin Wolf } 759797ac58cSKevin Wolf 760797ac58cSKevin Wolf if (Pflag) { 761797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 762797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 763797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 764797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 765797ac58cSKevin Wolf PRId64 ", %d bytes\n", 766797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 767797ac58cSKevin Wolf } 768797ac58cSKevin Wolf g_free(cmp_buf); 769797ac58cSKevin Wolf } 770797ac58cSKevin Wolf 771797ac58cSKevin Wolf if (qflag) { 772797ac58cSKevin Wolf goto out; 773797ac58cSKevin Wolf } 774797ac58cSKevin Wolf 775797ac58cSKevin Wolf if (vflag) { 776797ac58cSKevin Wolf dump_buffer(buf, offset, count); 777797ac58cSKevin Wolf } 778797ac58cSKevin Wolf 779797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 780797ac58cSKevin Wolf t2 = tsub(t2, t1); 781797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 782797ac58cSKevin Wolf 783797ac58cSKevin Wolf out: 784797ac58cSKevin Wolf qemu_io_free(buf); 785797ac58cSKevin Wolf 786797ac58cSKevin Wolf return 0; 787797ac58cSKevin Wolf } 788797ac58cSKevin Wolf 789797ac58cSKevin Wolf static void readv_help(void) 790797ac58cSKevin Wolf { 791797ac58cSKevin Wolf printf( 792797ac58cSKevin Wolf "\n" 793797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 794797ac58cSKevin Wolf "\n" 795797ac58cSKevin Wolf " Example:\n" 796797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 797797ac58cSKevin Wolf "\n" 798797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 799797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 800797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 801797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 802797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 803797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 804797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 805797ac58cSKevin Wolf "\n"); 806797ac58cSKevin Wolf } 807797ac58cSKevin Wolf 8084c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 809797ac58cSKevin Wolf 810797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 811797ac58cSKevin Wolf .name = "readv", 812797ac58cSKevin Wolf .cfunc = readv_f, 813797ac58cSKevin Wolf .argmin = 2, 814797ac58cSKevin Wolf .argmax = -1, 815797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern ] off len [len..]", 816797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 817797ac58cSKevin Wolf .help = readv_help, 818797ac58cSKevin Wolf }; 819797ac58cSKevin Wolf 8204c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 821797ac58cSKevin Wolf { 822797ac58cSKevin Wolf struct timeval t1, t2; 823797ac58cSKevin Wolf int Cflag = 0, qflag = 0, vflag = 0; 824797ac58cSKevin Wolf int c, cnt; 825797ac58cSKevin Wolf char *buf; 826797ac58cSKevin Wolf int64_t offset; 827797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 828797ac58cSKevin Wolf int total = 0; 829797ac58cSKevin Wolf int nr_iov; 830797ac58cSKevin Wolf QEMUIOVector qiov; 831797ac58cSKevin Wolf int pattern = 0; 832797ac58cSKevin Wolf int Pflag = 0; 833797ac58cSKevin Wolf 834b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 835797ac58cSKevin Wolf switch (c) { 836797ac58cSKevin Wolf case 'C': 837797ac58cSKevin Wolf Cflag = 1; 838797ac58cSKevin Wolf break; 839797ac58cSKevin Wolf case 'P': 840797ac58cSKevin Wolf Pflag = 1; 841797ac58cSKevin Wolf pattern = parse_pattern(optarg); 842797ac58cSKevin Wolf if (pattern < 0) { 843797ac58cSKevin Wolf return 0; 844797ac58cSKevin Wolf } 845797ac58cSKevin Wolf break; 846797ac58cSKevin Wolf case 'q': 847797ac58cSKevin Wolf qflag = 1; 848797ac58cSKevin Wolf break; 849797ac58cSKevin Wolf case 'v': 850797ac58cSKevin Wolf vflag = 1; 851797ac58cSKevin Wolf break; 852797ac58cSKevin Wolf default: 853c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 854797ac58cSKevin Wolf } 855797ac58cSKevin Wolf } 856797ac58cSKevin Wolf 857797ac58cSKevin Wolf if (optind > argc - 2) { 858c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 859797ac58cSKevin Wolf } 860797ac58cSKevin Wolf 861797ac58cSKevin Wolf 862797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 863797ac58cSKevin Wolf if (offset < 0) { 864797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 865797ac58cSKevin Wolf return 0; 866797ac58cSKevin Wolf } 867797ac58cSKevin Wolf optind++; 868797ac58cSKevin Wolf 869797ac58cSKevin Wolf if (offset & 0x1ff) { 870797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 871797ac58cSKevin Wolf offset); 872797ac58cSKevin Wolf return 0; 873797ac58cSKevin Wolf } 874797ac58cSKevin Wolf 875797ac58cSKevin Wolf nr_iov = argc - optind; 8764c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 877797ac58cSKevin Wolf if (buf == NULL) { 878797ac58cSKevin Wolf return 0; 879797ac58cSKevin Wolf } 880797ac58cSKevin Wolf 881797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8824c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 883797ac58cSKevin Wolf gettimeofday(&t2, NULL); 884797ac58cSKevin Wolf 885797ac58cSKevin Wolf if (cnt < 0) { 886797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 887797ac58cSKevin Wolf goto out; 888797ac58cSKevin Wolf } 889797ac58cSKevin Wolf 890797ac58cSKevin Wolf if (Pflag) { 891797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 892797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 893797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 894797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 895797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 896797ac58cSKevin Wolf } 897797ac58cSKevin Wolf g_free(cmp_buf); 898797ac58cSKevin Wolf } 899797ac58cSKevin Wolf 900797ac58cSKevin Wolf if (qflag) { 901797ac58cSKevin Wolf goto out; 902797ac58cSKevin Wolf } 903797ac58cSKevin Wolf 904797ac58cSKevin Wolf if (vflag) { 905797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 906797ac58cSKevin Wolf } 907797ac58cSKevin Wolf 908797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 909797ac58cSKevin Wolf t2 = tsub(t2, t1); 910797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 911797ac58cSKevin Wolf 912797ac58cSKevin Wolf out: 913797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 914797ac58cSKevin Wolf qemu_io_free(buf); 915797ac58cSKevin Wolf return 0; 916797ac58cSKevin Wolf } 917797ac58cSKevin Wolf 918797ac58cSKevin Wolf static void write_help(void) 919797ac58cSKevin Wolf { 920797ac58cSKevin Wolf printf( 921797ac58cSKevin Wolf "\n" 922797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 923797ac58cSKevin Wolf "\n" 924797ac58cSKevin Wolf " Example:\n" 925797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 926797ac58cSKevin Wolf "\n" 927797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 928797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 929797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9304c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 9314c7b7e9bSMax Reitz " -p, -- use blk_pwrite to write the file\n" 932797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 933797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 934797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 9354c7b7e9bSMax Reitz " -z, -- write zeroes using blk_co_write_zeroes\n" 936797ac58cSKevin Wolf "\n"); 937797ac58cSKevin Wolf } 938797ac58cSKevin Wolf 9394c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 940797ac58cSKevin Wolf 941797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 942797ac58cSKevin Wolf .name = "write", 943797ac58cSKevin Wolf .altname = "w", 944797ac58cSKevin Wolf .cfunc = write_f, 945797ac58cSKevin Wolf .argmin = 2, 946797ac58cSKevin Wolf .argmax = -1, 947797ac58cSKevin Wolf .args = "[-bcCpqz] [-P pattern ] off len", 948797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 949797ac58cSKevin Wolf .help = write_help, 950797ac58cSKevin Wolf }; 951797ac58cSKevin Wolf 9524c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 953797ac58cSKevin Wolf { 954797ac58cSKevin Wolf struct timeval t1, t2; 955797ac58cSKevin Wolf int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; 956797ac58cSKevin Wolf int cflag = 0; 957797ac58cSKevin Wolf int c, cnt; 958797ac58cSKevin Wolf char *buf = NULL; 959797ac58cSKevin Wolf int64_t offset; 960797ac58cSKevin Wolf int count; 961797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 962797ac58cSKevin Wolf int total = 0; 963797ac58cSKevin Wolf int pattern = 0xcd; 964797ac58cSKevin Wolf 965b062ad86SEric Blake while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) { 966797ac58cSKevin Wolf switch (c) { 967797ac58cSKevin Wolf case 'b': 968797ac58cSKevin Wolf bflag = 1; 969797ac58cSKevin Wolf break; 970797ac58cSKevin Wolf case 'c': 971797ac58cSKevin Wolf cflag = 1; 972797ac58cSKevin Wolf break; 973797ac58cSKevin Wolf case 'C': 974797ac58cSKevin Wolf Cflag = 1; 975797ac58cSKevin Wolf break; 976797ac58cSKevin Wolf case 'p': 977797ac58cSKevin Wolf pflag = 1; 978797ac58cSKevin Wolf break; 979797ac58cSKevin Wolf case 'P': 980797ac58cSKevin Wolf Pflag = 1; 981797ac58cSKevin Wolf pattern = parse_pattern(optarg); 982797ac58cSKevin Wolf if (pattern < 0) { 983797ac58cSKevin Wolf return 0; 984797ac58cSKevin Wolf } 985797ac58cSKevin Wolf break; 986797ac58cSKevin Wolf case 'q': 987797ac58cSKevin Wolf qflag = 1; 988797ac58cSKevin Wolf break; 989797ac58cSKevin Wolf case 'z': 990797ac58cSKevin Wolf zflag = 1; 991797ac58cSKevin Wolf break; 992797ac58cSKevin Wolf default: 993c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 994797ac58cSKevin Wolf } 995797ac58cSKevin Wolf } 996797ac58cSKevin Wolf 997797ac58cSKevin Wolf if (optind != argc - 2) { 998c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 999797ac58cSKevin Wolf } 1000797ac58cSKevin Wolf 1001797ac58cSKevin Wolf if (bflag + pflag + zflag > 1) { 1002797ac58cSKevin Wolf printf("-b, -p, or -z cannot be specified at the same time\n"); 1003797ac58cSKevin Wolf return 0; 1004797ac58cSKevin Wolf } 1005797ac58cSKevin Wolf 1006797ac58cSKevin Wolf if (zflag && Pflag) { 1007797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1008797ac58cSKevin Wolf return 0; 1009797ac58cSKevin Wolf } 1010797ac58cSKevin Wolf 1011797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1012797ac58cSKevin Wolf if (offset < 0) { 1013797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1014797ac58cSKevin Wolf return 0; 1015797ac58cSKevin Wolf } 1016797ac58cSKevin Wolf 1017797ac58cSKevin Wolf optind++; 1018797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1019797ac58cSKevin Wolf if (count < 0) { 1020797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1021797ac58cSKevin Wolf return 0; 1022797ac58cSKevin Wolf } 1023797ac58cSKevin Wolf 1024797ac58cSKevin Wolf if (!pflag) { 1025797ac58cSKevin Wolf if (offset & 0x1ff) { 1026797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1027797ac58cSKevin Wolf offset); 1028797ac58cSKevin Wolf return 0; 1029797ac58cSKevin Wolf } 1030797ac58cSKevin Wolf 1031797ac58cSKevin Wolf if (count & 0x1ff) { 1032797ac58cSKevin Wolf printf("count %d is not sector aligned\n", 1033797ac58cSKevin Wolf count); 1034797ac58cSKevin Wolf return 0; 1035797ac58cSKevin Wolf } 1036797ac58cSKevin Wolf } 1037797ac58cSKevin Wolf 1038797ac58cSKevin Wolf if (!zflag) { 10394c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1040797ac58cSKevin Wolf } 1041797ac58cSKevin Wolf 1042797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1043797ac58cSKevin Wolf if (pflag) { 10444c7b7e9bSMax Reitz cnt = do_pwrite(blk, buf, offset, count, &total); 1045797ac58cSKevin Wolf } else if (bflag) { 10464c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1047797ac58cSKevin Wolf } else if (zflag) { 10484c7b7e9bSMax Reitz cnt = do_co_write_zeroes(blk, offset, count, &total); 1049797ac58cSKevin Wolf } else if (cflag) { 10504c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1051797ac58cSKevin Wolf } else { 10524c7b7e9bSMax Reitz cnt = do_write(blk, buf, offset, count, &total); 1053797ac58cSKevin Wolf } 1054797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1055797ac58cSKevin Wolf 1056797ac58cSKevin Wolf if (cnt < 0) { 1057797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1058797ac58cSKevin Wolf goto out; 1059797ac58cSKevin Wolf } 1060797ac58cSKevin Wolf 1061797ac58cSKevin Wolf if (qflag) { 1062797ac58cSKevin Wolf goto out; 1063797ac58cSKevin Wolf } 1064797ac58cSKevin Wolf 1065797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1066797ac58cSKevin Wolf t2 = tsub(t2, t1); 1067797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1068797ac58cSKevin Wolf 1069797ac58cSKevin Wolf out: 1070797ac58cSKevin Wolf if (!zflag) { 1071797ac58cSKevin Wolf qemu_io_free(buf); 1072797ac58cSKevin Wolf } 1073797ac58cSKevin Wolf 1074797ac58cSKevin Wolf return 0; 1075797ac58cSKevin Wolf } 1076797ac58cSKevin Wolf 1077797ac58cSKevin Wolf static void 1078797ac58cSKevin Wolf writev_help(void) 1079797ac58cSKevin Wolf { 1080797ac58cSKevin Wolf printf( 1081797ac58cSKevin Wolf "\n" 1082797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1083797ac58cSKevin Wolf "\n" 1084797ac58cSKevin Wolf " Example:\n" 10856e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1086797ac58cSKevin Wolf "\n" 1087797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1088797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1089797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1090797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1091797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1092797ac58cSKevin Wolf "\n"); 1093797ac58cSKevin Wolf } 1094797ac58cSKevin Wolf 10954c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1096797ac58cSKevin Wolf 1097797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1098797ac58cSKevin Wolf .name = "writev", 1099797ac58cSKevin Wolf .cfunc = writev_f, 1100797ac58cSKevin Wolf .argmin = 2, 1101797ac58cSKevin Wolf .argmax = -1, 1102797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..]", 1103797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1104797ac58cSKevin Wolf .help = writev_help, 1105797ac58cSKevin Wolf }; 1106797ac58cSKevin Wolf 11074c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1108797ac58cSKevin Wolf { 1109797ac58cSKevin Wolf struct timeval t1, t2; 1110797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1111797ac58cSKevin Wolf int c, cnt; 1112797ac58cSKevin Wolf char *buf; 1113797ac58cSKevin Wolf int64_t offset; 1114797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1115797ac58cSKevin Wolf int total = 0; 1116797ac58cSKevin Wolf int nr_iov; 1117797ac58cSKevin Wolf int pattern = 0xcd; 1118797ac58cSKevin Wolf QEMUIOVector qiov; 1119797ac58cSKevin Wolf 1120b062ad86SEric Blake while ((c = getopt(argc, argv, "CqP:")) != -1) { 1121797ac58cSKevin Wolf switch (c) { 1122797ac58cSKevin Wolf case 'C': 1123797ac58cSKevin Wolf Cflag = 1; 1124797ac58cSKevin Wolf break; 1125797ac58cSKevin Wolf case 'q': 1126797ac58cSKevin Wolf qflag = 1; 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) { 1145797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1146797ac58cSKevin Wolf return 0; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf optind++; 1149797ac58cSKevin Wolf 1150797ac58cSKevin Wolf if (offset & 0x1ff) { 1151797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1152797ac58cSKevin Wolf offset); 1153797ac58cSKevin Wolf return 0; 1154797ac58cSKevin Wolf } 1155797ac58cSKevin Wolf 1156797ac58cSKevin Wolf nr_iov = argc - optind; 11574c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1158797ac58cSKevin Wolf if (buf == NULL) { 1159797ac58cSKevin Wolf return 0; 1160797ac58cSKevin Wolf } 1161797ac58cSKevin Wolf 1162797ac58cSKevin Wolf gettimeofday(&t1, NULL); 11634c7b7e9bSMax Reitz cnt = do_aio_writev(blk, &qiov, offset, &total); 1164797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1165797ac58cSKevin Wolf 1166797ac58cSKevin Wolf if (cnt < 0) { 1167797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1168797ac58cSKevin Wolf goto out; 1169797ac58cSKevin Wolf } 1170797ac58cSKevin Wolf 1171797ac58cSKevin Wolf if (qflag) { 1172797ac58cSKevin Wolf goto out; 1173797ac58cSKevin Wolf } 1174797ac58cSKevin Wolf 1175797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1176797ac58cSKevin Wolf t2 = tsub(t2, t1); 1177797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1178797ac58cSKevin Wolf out: 1179797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1180797ac58cSKevin Wolf qemu_io_free(buf); 1181797ac58cSKevin Wolf return 0; 1182797ac58cSKevin Wolf } 1183797ac58cSKevin Wolf 1184797ac58cSKevin Wolf static void multiwrite_help(void) 1185797ac58cSKevin Wolf { 1186797ac58cSKevin Wolf printf( 1187797ac58cSKevin Wolf "\n" 1188797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers,\n" 1189797ac58cSKevin Wolf " in a batch of requests that may be merged by qemu\n" 1190797ac58cSKevin Wolf "\n" 1191797ac58cSKevin Wolf " Example:\n" 1192797ac58cSKevin Wolf " 'multiwrite 512 1k 1k ; 4k 1k'\n" 1193797ac58cSKevin Wolf " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" 1194797ac58cSKevin Wolf "\n" 1195797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1196797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" 1197797ac58cSKevin Wolf " by one for each request contained in the multiwrite command.\n" 1198797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1199797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1200797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1201797ac58cSKevin Wolf "\n"); 1202797ac58cSKevin Wolf } 1203797ac58cSKevin Wolf 12044c7b7e9bSMax Reitz static int multiwrite_f(BlockBackend *blk, int argc, char **argv); 1205797ac58cSKevin Wolf 1206797ac58cSKevin Wolf static const cmdinfo_t multiwrite_cmd = { 1207797ac58cSKevin Wolf .name = "multiwrite", 1208797ac58cSKevin Wolf .cfunc = multiwrite_f, 1209797ac58cSKevin Wolf .argmin = 2, 1210797ac58cSKevin Wolf .argmax = -1, 1211797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", 1212797ac58cSKevin Wolf .oneline = "issues multiple write requests at once", 1213797ac58cSKevin Wolf .help = multiwrite_help, 1214797ac58cSKevin Wolf }; 1215797ac58cSKevin Wolf 12164c7b7e9bSMax Reitz static int multiwrite_f(BlockBackend *blk, int argc, char **argv) 1217797ac58cSKevin Wolf { 1218797ac58cSKevin Wolf struct timeval t1, t2; 1219797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1220797ac58cSKevin Wolf int c, cnt; 1221797ac58cSKevin Wolf char **buf; 1222797ac58cSKevin Wolf int64_t offset, first_offset = 0; 1223797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1224797ac58cSKevin Wolf int total = 0; 1225797ac58cSKevin Wolf int nr_iov; 1226797ac58cSKevin Wolf int nr_reqs; 1227797ac58cSKevin Wolf int pattern = 0xcd; 1228797ac58cSKevin Wolf QEMUIOVector *qiovs; 1229797ac58cSKevin Wolf int i; 1230797ac58cSKevin Wolf BlockRequest *reqs; 1231797ac58cSKevin Wolf 1232b062ad86SEric Blake while ((c = getopt(argc, argv, "CqP:")) != -1) { 1233797ac58cSKevin Wolf switch (c) { 1234797ac58cSKevin Wolf case 'C': 1235797ac58cSKevin Wolf Cflag = 1; 1236797ac58cSKevin Wolf break; 1237797ac58cSKevin Wolf case 'q': 1238797ac58cSKevin Wolf qflag = 1; 1239797ac58cSKevin Wolf break; 1240797ac58cSKevin Wolf case 'P': 1241797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1242797ac58cSKevin Wolf if (pattern < 0) { 1243797ac58cSKevin Wolf return 0; 1244797ac58cSKevin Wolf } 1245797ac58cSKevin Wolf break; 1246797ac58cSKevin Wolf default: 1247c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1248797ac58cSKevin Wolf } 1249797ac58cSKevin Wolf } 1250797ac58cSKevin Wolf 1251797ac58cSKevin Wolf if (optind > argc - 2) { 1252c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1253797ac58cSKevin Wolf } 1254797ac58cSKevin Wolf 1255797ac58cSKevin Wolf nr_reqs = 1; 1256797ac58cSKevin Wolf for (i = optind; i < argc; i++) { 1257797ac58cSKevin Wolf if (!strcmp(argv[i], ";")) { 1258797ac58cSKevin Wolf nr_reqs++; 1259797ac58cSKevin Wolf } 1260797ac58cSKevin Wolf } 1261797ac58cSKevin Wolf 126202c4f26bSMarkus Armbruster reqs = g_new0(BlockRequest, nr_reqs); 126302c4f26bSMarkus Armbruster buf = g_new0(char *, nr_reqs); 126402c4f26bSMarkus Armbruster qiovs = g_new(QEMUIOVector, nr_reqs); 1265797ac58cSKevin Wolf 1266797ac58cSKevin Wolf for (i = 0; i < nr_reqs && optind < argc; i++) { 1267797ac58cSKevin Wolf int j; 1268797ac58cSKevin Wolf 1269797ac58cSKevin Wolf /* Read the offset of the request */ 1270797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1271797ac58cSKevin Wolf if (offset < 0) { 1272797ac58cSKevin Wolf printf("non-numeric offset argument -- %s\n", argv[optind]); 1273797ac58cSKevin Wolf goto out; 1274797ac58cSKevin Wolf } 1275797ac58cSKevin Wolf optind++; 1276797ac58cSKevin Wolf 1277797ac58cSKevin Wolf if (offset & 0x1ff) { 1278797ac58cSKevin Wolf printf("offset %lld is not sector aligned\n", 1279797ac58cSKevin Wolf (long long)offset); 1280797ac58cSKevin Wolf goto out; 1281797ac58cSKevin Wolf } 1282797ac58cSKevin Wolf 1283797ac58cSKevin Wolf if (i == 0) { 1284797ac58cSKevin Wolf first_offset = offset; 1285797ac58cSKevin Wolf } 1286797ac58cSKevin Wolf 1287797ac58cSKevin Wolf /* Read lengths for qiov entries */ 1288797ac58cSKevin Wolf for (j = optind; j < argc; j++) { 1289797ac58cSKevin Wolf if (!strcmp(argv[j], ";")) { 1290797ac58cSKevin Wolf break; 1291797ac58cSKevin Wolf } 1292797ac58cSKevin Wolf } 1293797ac58cSKevin Wolf 1294797ac58cSKevin Wolf nr_iov = j - optind; 1295797ac58cSKevin Wolf 1296797ac58cSKevin Wolf /* Build request */ 12974c7b7e9bSMax Reitz buf[i] = create_iovec(blk, &qiovs[i], &argv[optind], nr_iov, pattern); 1298797ac58cSKevin Wolf if (buf[i] == NULL) { 1299797ac58cSKevin Wolf goto out; 1300797ac58cSKevin Wolf } 1301797ac58cSKevin Wolf 1302797ac58cSKevin Wolf reqs[i].qiov = &qiovs[i]; 1303797ac58cSKevin Wolf reqs[i].sector = offset >> 9; 1304797ac58cSKevin Wolf reqs[i].nb_sectors = reqs[i].qiov->size >> 9; 1305797ac58cSKevin Wolf 1306797ac58cSKevin Wolf optind = j + 1; 1307797ac58cSKevin Wolf 1308797ac58cSKevin Wolf pattern++; 1309797ac58cSKevin Wolf } 1310797ac58cSKevin Wolf 1311797ac58cSKevin Wolf /* If there were empty requests at the end, ignore them */ 1312797ac58cSKevin Wolf nr_reqs = i; 1313797ac58cSKevin Wolf 1314797ac58cSKevin Wolf gettimeofday(&t1, NULL); 13154c7b7e9bSMax Reitz cnt = do_aio_multiwrite(blk, reqs, nr_reqs, &total); 1316797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1317797ac58cSKevin Wolf 1318797ac58cSKevin Wolf if (cnt < 0) { 1319797ac58cSKevin Wolf printf("aio_multiwrite failed: %s\n", strerror(-cnt)); 1320797ac58cSKevin Wolf goto out; 1321797ac58cSKevin Wolf } 1322797ac58cSKevin Wolf 1323797ac58cSKevin Wolf if (qflag) { 1324797ac58cSKevin Wolf goto out; 1325797ac58cSKevin Wolf } 1326797ac58cSKevin Wolf 1327797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1328797ac58cSKevin Wolf t2 = tsub(t2, t1); 1329797ac58cSKevin Wolf print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); 1330797ac58cSKevin Wolf out: 1331797ac58cSKevin Wolf for (i = 0; i < nr_reqs; i++) { 1332797ac58cSKevin Wolf qemu_io_free(buf[i]); 1333797ac58cSKevin Wolf if (reqs[i].qiov != NULL) { 1334797ac58cSKevin Wolf qemu_iovec_destroy(&qiovs[i]); 1335797ac58cSKevin Wolf } 1336797ac58cSKevin Wolf } 1337797ac58cSKevin Wolf g_free(buf); 1338797ac58cSKevin Wolf g_free(reqs); 1339797ac58cSKevin Wolf g_free(qiovs); 1340797ac58cSKevin Wolf return 0; 1341797ac58cSKevin Wolf } 1342797ac58cSKevin Wolf 1343797ac58cSKevin Wolf struct aio_ctx { 13444c7b7e9bSMax Reitz BlockBackend *blk; 1345797ac58cSKevin Wolf QEMUIOVector qiov; 1346797ac58cSKevin Wolf int64_t offset; 1347797ac58cSKevin Wolf char *buf; 1348797ac58cSKevin Wolf int qflag; 1349797ac58cSKevin Wolf int vflag; 1350797ac58cSKevin Wolf int Cflag; 1351797ac58cSKevin Wolf int Pflag; 1352a91f9584SFam Zheng BlockAcctCookie acct; 1353797ac58cSKevin Wolf int pattern; 1354797ac58cSKevin Wolf struct timeval t1; 1355797ac58cSKevin Wolf }; 1356797ac58cSKevin Wolf 1357797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1358797ac58cSKevin Wolf { 1359797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1360797ac58cSKevin Wolf struct timeval t2; 1361797ac58cSKevin Wolf 1362797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1363797ac58cSKevin Wolf 1364797ac58cSKevin Wolf 1365797ac58cSKevin Wolf if (ret < 0) { 1366797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1367797ac58cSKevin Wolf goto out; 1368797ac58cSKevin Wolf } 1369797ac58cSKevin Wolf 13704c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1371a91f9584SFam Zheng 1372797ac58cSKevin Wolf if (ctx->qflag) { 1373797ac58cSKevin Wolf goto out; 1374797ac58cSKevin Wolf } 1375797ac58cSKevin Wolf 1376797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1377797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1378797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1379797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1380797ac58cSKevin Wolf out: 1381797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1382797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1383797ac58cSKevin Wolf g_free(ctx); 1384797ac58cSKevin Wolf } 1385797ac58cSKevin Wolf 1386797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1387797ac58cSKevin Wolf { 1388797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1389797ac58cSKevin Wolf struct timeval t2; 1390797ac58cSKevin Wolf 1391797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1392797ac58cSKevin Wolf 1393797ac58cSKevin Wolf if (ret < 0) { 1394797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1395797ac58cSKevin Wolf goto out; 1396797ac58cSKevin Wolf } 1397797ac58cSKevin Wolf 1398797ac58cSKevin Wolf if (ctx->Pflag) { 1399797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1400797ac58cSKevin Wolf 1401797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1402797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1403797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1404797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1405797ac58cSKevin Wolf } 1406797ac58cSKevin Wolf g_free(cmp_buf); 1407797ac58cSKevin Wolf } 1408797ac58cSKevin Wolf 14094c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1410a91f9584SFam Zheng 1411797ac58cSKevin Wolf if (ctx->qflag) { 1412797ac58cSKevin Wolf goto out; 1413797ac58cSKevin Wolf } 1414797ac58cSKevin Wolf 1415797ac58cSKevin Wolf if (ctx->vflag) { 1416797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1417797ac58cSKevin Wolf } 1418797ac58cSKevin Wolf 1419797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1420797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1421797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1422797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1423797ac58cSKevin Wolf out: 1424797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1425797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1426797ac58cSKevin Wolf g_free(ctx); 1427797ac58cSKevin Wolf } 1428797ac58cSKevin Wolf 1429797ac58cSKevin Wolf static void aio_read_help(void) 1430797ac58cSKevin Wolf { 1431797ac58cSKevin Wolf printf( 1432797ac58cSKevin Wolf "\n" 1433797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1434797ac58cSKevin Wolf "\n" 1435797ac58cSKevin Wolf " Example:\n" 1436797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1437797ac58cSKevin Wolf "\n" 1438797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1439797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1440797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1441797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1442797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1443797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 1444797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1445797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1446797ac58cSKevin Wolf "\n"); 1447797ac58cSKevin Wolf } 1448797ac58cSKevin Wolf 14494c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1450797ac58cSKevin Wolf 1451797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1452797ac58cSKevin Wolf .name = "aio_read", 1453797ac58cSKevin Wolf .cfunc = aio_read_f, 1454797ac58cSKevin Wolf .argmin = 2, 1455797ac58cSKevin Wolf .argmax = -1, 1456797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern ] off len [len..]", 1457797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1458797ac58cSKevin Wolf .help = aio_read_help, 1459797ac58cSKevin Wolf }; 1460797ac58cSKevin Wolf 14614c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1462797ac58cSKevin Wolf { 1463797ac58cSKevin Wolf int nr_iov, c; 1464797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1465797ac58cSKevin Wolf 14664c7b7e9bSMax Reitz ctx->blk = blk; 1467b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 1468797ac58cSKevin Wolf switch (c) { 1469797ac58cSKevin Wolf case 'C': 1470797ac58cSKevin Wolf ctx->Cflag = 1; 1471797ac58cSKevin Wolf break; 1472797ac58cSKevin Wolf case 'P': 1473797ac58cSKevin Wolf ctx->Pflag = 1; 1474797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1475797ac58cSKevin Wolf if (ctx->pattern < 0) { 1476797ac58cSKevin Wolf g_free(ctx); 1477797ac58cSKevin Wolf return 0; 1478797ac58cSKevin Wolf } 1479797ac58cSKevin Wolf break; 1480797ac58cSKevin Wolf case 'q': 1481797ac58cSKevin Wolf ctx->qflag = 1; 1482797ac58cSKevin Wolf break; 1483797ac58cSKevin Wolf case 'v': 1484797ac58cSKevin Wolf ctx->vflag = 1; 1485797ac58cSKevin Wolf break; 1486797ac58cSKevin Wolf default: 1487797ac58cSKevin Wolf g_free(ctx); 1488c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1489797ac58cSKevin Wolf } 1490797ac58cSKevin Wolf } 1491797ac58cSKevin Wolf 1492797ac58cSKevin Wolf if (optind > argc - 2) { 1493797ac58cSKevin Wolf g_free(ctx); 1494c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1495797ac58cSKevin Wolf } 1496797ac58cSKevin Wolf 1497797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1498797ac58cSKevin Wolf if (ctx->offset < 0) { 1499797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1500797ac58cSKevin Wolf g_free(ctx); 1501797ac58cSKevin Wolf return 0; 1502797ac58cSKevin Wolf } 1503797ac58cSKevin Wolf optind++; 1504797ac58cSKevin Wolf 1505797ac58cSKevin Wolf if (ctx->offset & 0x1ff) { 1506797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1507797ac58cSKevin Wolf ctx->offset); 1508797ac58cSKevin Wolf g_free(ctx); 1509797ac58cSKevin Wolf return 0; 1510797ac58cSKevin Wolf } 1511797ac58cSKevin Wolf 1512797ac58cSKevin Wolf nr_iov = argc - optind; 15134c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1514797ac58cSKevin Wolf if (ctx->buf == NULL) { 1515797ac58cSKevin Wolf g_free(ctx); 1516797ac58cSKevin Wolf return 0; 1517797ac58cSKevin Wolf } 1518797ac58cSKevin Wolf 1519797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 15204c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15214c7b7e9bSMax Reitz BLOCK_ACCT_READ); 15224c7b7e9bSMax Reitz blk_aio_readv(blk, ctx->offset >> 9, &ctx->qiov, 1523797ac58cSKevin Wolf ctx->qiov.size >> 9, aio_read_done, ctx); 1524797ac58cSKevin Wolf return 0; 1525797ac58cSKevin Wolf } 1526797ac58cSKevin Wolf 1527797ac58cSKevin Wolf static void aio_write_help(void) 1528797ac58cSKevin Wolf { 1529797ac58cSKevin Wolf printf( 1530797ac58cSKevin Wolf "\n" 1531797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1532797ac58cSKevin Wolf " from multiple buffers\n" 1533797ac58cSKevin Wolf "\n" 1534797ac58cSKevin Wolf " Example:\n" 1535797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1536797ac58cSKevin Wolf "\n" 1537797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1538797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1539797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1540797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1541797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1542797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1543797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1544797ac58cSKevin Wolf "\n"); 1545797ac58cSKevin Wolf } 1546797ac58cSKevin Wolf 15474c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1548797ac58cSKevin Wolf 1549797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1550797ac58cSKevin Wolf .name = "aio_write", 1551797ac58cSKevin Wolf .cfunc = aio_write_f, 1552797ac58cSKevin Wolf .argmin = 2, 1553797ac58cSKevin Wolf .argmax = -1, 1554797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..]", 1555797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1556797ac58cSKevin Wolf .help = aio_write_help, 1557797ac58cSKevin Wolf }; 1558797ac58cSKevin Wolf 15594c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1560797ac58cSKevin Wolf { 1561797ac58cSKevin Wolf int nr_iov, c; 1562797ac58cSKevin Wolf int pattern = 0xcd; 1563797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1564797ac58cSKevin Wolf 15654c7b7e9bSMax Reitz ctx->blk = blk; 1566b062ad86SEric Blake while ((c = getopt(argc, argv, "CqP:")) != -1) { 1567797ac58cSKevin Wolf switch (c) { 1568797ac58cSKevin Wolf case 'C': 1569797ac58cSKevin Wolf ctx->Cflag = 1; 1570797ac58cSKevin Wolf break; 1571797ac58cSKevin Wolf case 'q': 1572797ac58cSKevin Wolf ctx->qflag = 1; 1573797ac58cSKevin Wolf break; 1574797ac58cSKevin Wolf case 'P': 1575797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1576797ac58cSKevin Wolf if (pattern < 0) { 1577797ac58cSKevin Wolf g_free(ctx); 1578797ac58cSKevin Wolf return 0; 1579797ac58cSKevin Wolf } 1580797ac58cSKevin Wolf break; 1581797ac58cSKevin Wolf default: 1582797ac58cSKevin Wolf g_free(ctx); 1583c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1584797ac58cSKevin Wolf } 1585797ac58cSKevin Wolf } 1586797ac58cSKevin Wolf 1587797ac58cSKevin Wolf if (optind > argc - 2) { 1588797ac58cSKevin Wolf g_free(ctx); 1589c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1590797ac58cSKevin Wolf } 1591797ac58cSKevin Wolf 1592797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1593797ac58cSKevin Wolf if (ctx->offset < 0) { 1594797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1595797ac58cSKevin Wolf g_free(ctx); 1596797ac58cSKevin Wolf return 0; 1597797ac58cSKevin Wolf } 1598797ac58cSKevin Wolf optind++; 1599797ac58cSKevin Wolf 1600797ac58cSKevin Wolf if (ctx->offset & 0x1ff) { 1601797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1602797ac58cSKevin Wolf ctx->offset); 1603797ac58cSKevin Wolf g_free(ctx); 1604797ac58cSKevin Wolf return 0; 1605797ac58cSKevin Wolf } 1606797ac58cSKevin Wolf 1607797ac58cSKevin Wolf nr_iov = argc - optind; 16084c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, pattern); 1609797ac58cSKevin Wolf if (ctx->buf == NULL) { 1610797ac58cSKevin Wolf g_free(ctx); 1611797ac58cSKevin Wolf return 0; 1612797ac58cSKevin Wolf } 1613797ac58cSKevin Wolf 1614797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 16154c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 16164c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 16174c7b7e9bSMax Reitz blk_aio_writev(blk, ctx->offset >> 9, &ctx->qiov, 1618797ac58cSKevin Wolf ctx->qiov.size >> 9, aio_write_done, ctx); 1619797ac58cSKevin Wolf return 0; 1620797ac58cSKevin Wolf } 1621797ac58cSKevin Wolf 16224c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1623797ac58cSKevin Wolf { 16244c7b7e9bSMax Reitz blk_drain_all(); 1625797ac58cSKevin Wolf return 0; 1626797ac58cSKevin Wolf } 1627797ac58cSKevin Wolf 1628797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1629797ac58cSKevin Wolf .name = "aio_flush", 1630797ac58cSKevin Wolf .cfunc = aio_flush_f, 1631797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1632797ac58cSKevin Wolf }; 1633797ac58cSKevin Wolf 16344c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1635797ac58cSKevin Wolf { 16364c7b7e9bSMax Reitz blk_flush(blk); 1637797ac58cSKevin Wolf return 0; 1638797ac58cSKevin Wolf } 1639797ac58cSKevin Wolf 1640797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1641797ac58cSKevin Wolf .name = "flush", 1642797ac58cSKevin Wolf .altname = "f", 1643797ac58cSKevin Wolf .cfunc = flush_f, 1644797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1645797ac58cSKevin Wolf }; 1646797ac58cSKevin Wolf 16474c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1648797ac58cSKevin Wolf { 1649797ac58cSKevin Wolf int64_t offset; 1650797ac58cSKevin Wolf int ret; 1651797ac58cSKevin Wolf 1652797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1653797ac58cSKevin Wolf if (offset < 0) { 1654797ac58cSKevin Wolf printf("non-numeric truncate argument -- %s\n", argv[1]); 1655797ac58cSKevin Wolf return 0; 1656797ac58cSKevin Wolf } 1657797ac58cSKevin Wolf 16584c7b7e9bSMax Reitz ret = blk_truncate(blk, offset); 1659797ac58cSKevin Wolf if (ret < 0) { 1660797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1661797ac58cSKevin Wolf return 0; 1662797ac58cSKevin Wolf } 1663797ac58cSKevin Wolf 1664797ac58cSKevin Wolf return 0; 1665797ac58cSKevin Wolf } 1666797ac58cSKevin Wolf 1667797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1668797ac58cSKevin Wolf .name = "truncate", 1669797ac58cSKevin Wolf .altname = "t", 1670797ac58cSKevin Wolf .cfunc = truncate_f, 1671797ac58cSKevin Wolf .argmin = 1, 1672797ac58cSKevin Wolf .argmax = 1, 1673797ac58cSKevin Wolf .args = "off", 1674797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1675797ac58cSKevin Wolf }; 1676797ac58cSKevin Wolf 16774c7b7e9bSMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1678797ac58cSKevin Wolf { 1679797ac58cSKevin Wolf int64_t size; 1680797ac58cSKevin Wolf char s1[64]; 1681797ac58cSKevin Wolf 16824c7b7e9bSMax Reitz size = blk_getlength(blk); 1683797ac58cSKevin Wolf if (size < 0) { 1684797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1685797ac58cSKevin Wolf return 0; 1686797ac58cSKevin Wolf } 1687797ac58cSKevin Wolf 1688797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1689797ac58cSKevin Wolf printf("%s\n", s1); 1690797ac58cSKevin Wolf return 0; 1691797ac58cSKevin Wolf } 1692797ac58cSKevin Wolf 1693797ac58cSKevin Wolf 1694797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1695797ac58cSKevin Wolf .name = "length", 1696797ac58cSKevin Wolf .altname = "l", 1697797ac58cSKevin Wolf .cfunc = length_f, 1698797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1699797ac58cSKevin Wolf }; 1700797ac58cSKevin Wolf 1701797ac58cSKevin Wolf 17024c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1703797ac58cSKevin Wolf { 17044c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1705797ac58cSKevin Wolf BlockDriverInfo bdi; 1706a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1707797ac58cSKevin Wolf char s1[64], s2[64]; 1708797ac58cSKevin Wolf int ret; 1709797ac58cSKevin Wolf 1710797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1711797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1712797ac58cSKevin Wolf } 1713797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1714797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1715797ac58cSKevin Wolf } 1716797ac58cSKevin Wolf 1717797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1718797ac58cSKevin Wolf if (ret) { 1719797ac58cSKevin Wolf return 0; 1720797ac58cSKevin Wolf } 1721797ac58cSKevin Wolf 1722797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1723797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1724797ac58cSKevin Wolf 1725797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1726797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1727797ac58cSKevin Wolf 1728a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1729a8d8ecb7SMax Reitz if (spec_info) { 1730a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1731a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1732a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1733a8d8ecb7SMax Reitz } 1734a8d8ecb7SMax Reitz 1735797ac58cSKevin Wolf return 0; 1736797ac58cSKevin Wolf } 1737797ac58cSKevin Wolf 1738797ac58cSKevin Wolf 1739797ac58cSKevin Wolf 1740797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1741797ac58cSKevin Wolf .name = "info", 1742797ac58cSKevin Wolf .altname = "i", 1743797ac58cSKevin Wolf .cfunc = info_f, 1744797ac58cSKevin Wolf .oneline = "prints information about the current file", 1745797ac58cSKevin Wolf }; 1746797ac58cSKevin Wolf 1747797ac58cSKevin Wolf static void discard_help(void) 1748797ac58cSKevin Wolf { 1749797ac58cSKevin Wolf printf( 1750797ac58cSKevin Wolf "\n" 1751797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1752797ac58cSKevin Wolf "\n" 1753797ac58cSKevin Wolf " Example:\n" 1754797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1755797ac58cSKevin Wolf "\n" 1756797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1757797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1758797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1759797ac58cSKevin Wolf "\n"); 1760797ac58cSKevin Wolf } 1761797ac58cSKevin Wolf 17624c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1763797ac58cSKevin Wolf 1764797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1765797ac58cSKevin Wolf .name = "discard", 1766797ac58cSKevin Wolf .altname = "d", 1767797ac58cSKevin Wolf .cfunc = discard_f, 1768797ac58cSKevin Wolf .argmin = 2, 1769797ac58cSKevin Wolf .argmax = -1, 1770797ac58cSKevin Wolf .args = "[-Cq] off len", 1771797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1772797ac58cSKevin Wolf .help = discard_help, 1773797ac58cSKevin Wolf }; 1774797ac58cSKevin Wolf 17754c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1776797ac58cSKevin Wolf { 1777797ac58cSKevin Wolf struct timeval t1, t2; 1778797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1779797ac58cSKevin Wolf int c, ret; 1780797ac58cSKevin Wolf int64_t offset; 1781797ac58cSKevin Wolf int count; 1782797ac58cSKevin Wolf 1783b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1784797ac58cSKevin Wolf switch (c) { 1785797ac58cSKevin Wolf case 'C': 1786797ac58cSKevin Wolf Cflag = 1; 1787797ac58cSKevin Wolf break; 1788797ac58cSKevin Wolf case 'q': 1789797ac58cSKevin Wolf qflag = 1; 1790797ac58cSKevin Wolf break; 1791797ac58cSKevin Wolf default: 1792c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1793797ac58cSKevin Wolf } 1794797ac58cSKevin Wolf } 1795797ac58cSKevin Wolf 1796797ac58cSKevin Wolf if (optind != argc - 2) { 1797c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1798797ac58cSKevin Wolf } 1799797ac58cSKevin Wolf 1800797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1801797ac58cSKevin Wolf if (offset < 0) { 1802797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1803797ac58cSKevin Wolf return 0; 1804797ac58cSKevin Wolf } 1805797ac58cSKevin Wolf 1806797ac58cSKevin Wolf optind++; 1807797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1808797ac58cSKevin Wolf if (count < 0) { 1809797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1810797ac58cSKevin Wolf return 0; 1811797ac58cSKevin Wolf } 1812797ac58cSKevin Wolf 1813797ac58cSKevin Wolf gettimeofday(&t1, NULL); 18144c7b7e9bSMax Reitz ret = blk_discard(blk, offset >> BDRV_SECTOR_BITS, 1815797ac58cSKevin Wolf count >> BDRV_SECTOR_BITS); 1816797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1817797ac58cSKevin Wolf 1818797ac58cSKevin Wolf if (ret < 0) { 1819797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1820797ac58cSKevin Wolf goto out; 1821797ac58cSKevin Wolf } 1822797ac58cSKevin Wolf 1823797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1824797ac58cSKevin Wolf if (!qflag) { 1825797ac58cSKevin Wolf t2 = tsub(t2, t1); 1826797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1827797ac58cSKevin Wolf } 1828797ac58cSKevin Wolf 1829797ac58cSKevin Wolf out: 1830797ac58cSKevin Wolf return 0; 1831797ac58cSKevin Wolf } 1832797ac58cSKevin Wolf 18334c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1834797ac58cSKevin Wolf { 18354c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1836797ac58cSKevin Wolf int64_t offset, sector_num; 1837797ac58cSKevin Wolf int nb_sectors, remaining; 1838797ac58cSKevin Wolf char s1[64]; 1839797ac58cSKevin Wolf int num, sum_alloc; 1840797ac58cSKevin Wolf int ret; 1841797ac58cSKevin Wolf 1842797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1843797ac58cSKevin Wolf if (offset < 0) { 1844797ac58cSKevin Wolf printf("non-numeric offset argument -- %s\n", argv[1]); 1845797ac58cSKevin Wolf return 0; 1846797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1847797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1848797ac58cSKevin Wolf offset); 1849797ac58cSKevin Wolf return 0; 1850797ac58cSKevin Wolf } 1851797ac58cSKevin Wolf 1852797ac58cSKevin Wolf if (argc == 3) { 1853797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1854797ac58cSKevin Wolf if (nb_sectors < 0) { 1855797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[2]); 1856797ac58cSKevin Wolf return 0; 1857797ac58cSKevin Wolf } 1858797ac58cSKevin Wolf } else { 1859797ac58cSKevin Wolf nb_sectors = 1; 1860797ac58cSKevin Wolf } 1861797ac58cSKevin Wolf 1862797ac58cSKevin Wolf remaining = nb_sectors; 1863797ac58cSKevin Wolf sum_alloc = 0; 1864797ac58cSKevin Wolf sector_num = offset >> 9; 1865797ac58cSKevin Wolf while (remaining) { 1866797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1867d663640cSPaolo Bonzini if (ret < 0) { 1868d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1869d663640cSPaolo Bonzini return 0; 1870d663640cSPaolo Bonzini } 1871797ac58cSKevin Wolf sector_num += num; 1872797ac58cSKevin Wolf remaining -= num; 1873797ac58cSKevin Wolf if (ret) { 1874797ac58cSKevin Wolf sum_alloc += num; 1875797ac58cSKevin Wolf } 1876797ac58cSKevin Wolf if (num == 0) { 1877797ac58cSKevin Wolf nb_sectors -= remaining; 1878797ac58cSKevin Wolf remaining = 0; 1879797ac58cSKevin Wolf } 1880797ac58cSKevin Wolf } 1881797ac58cSKevin Wolf 1882797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1883797ac58cSKevin Wolf 1884797ac58cSKevin Wolf printf("%d/%d sectors allocated at offset %s\n", 1885797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1886797ac58cSKevin Wolf return 0; 1887797ac58cSKevin Wolf } 1888797ac58cSKevin Wolf 1889797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1890797ac58cSKevin Wolf .name = "alloc", 1891797ac58cSKevin Wolf .altname = "a", 1892797ac58cSKevin Wolf .argmin = 1, 1893797ac58cSKevin Wolf .argmax = 2, 1894797ac58cSKevin Wolf .cfunc = alloc_f, 1895797ac58cSKevin Wolf .args = "off [sectors]", 1896797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1897797ac58cSKevin Wolf }; 1898797ac58cSKevin Wolf 1899797ac58cSKevin Wolf 1900797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1901797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1902797ac58cSKevin Wolf { 1903797ac58cSKevin Wolf int num, num_checked; 1904797ac58cSKevin Wolf int ret, firstret; 1905797ac58cSKevin Wolf 1906797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1907797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1908797ac58cSKevin Wolf if (ret < 0) { 1909797ac58cSKevin Wolf return ret; 1910797ac58cSKevin Wolf } 1911797ac58cSKevin Wolf 1912797ac58cSKevin Wolf firstret = ret; 1913797ac58cSKevin Wolf *pnum = num; 1914797ac58cSKevin Wolf 1915797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1916797ac58cSKevin Wolf sector_num += num; 1917797ac58cSKevin Wolf nb_sectors -= num; 1918797ac58cSKevin Wolf 1919797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1920797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 19214b25bbc4SMax Reitz if (ret == firstret && num) { 1922797ac58cSKevin Wolf *pnum += num; 1923797ac58cSKevin Wolf } else { 1924797ac58cSKevin Wolf break; 1925797ac58cSKevin Wolf } 1926797ac58cSKevin Wolf } 1927797ac58cSKevin Wolf 1928797ac58cSKevin Wolf return firstret; 1929797ac58cSKevin Wolf } 1930797ac58cSKevin Wolf 19314c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1932797ac58cSKevin Wolf { 1933797ac58cSKevin Wolf int64_t offset; 19344c7b7e9bSMax Reitz int64_t nb_sectors, total_sectors; 1935797ac58cSKevin Wolf char s1[64]; 1936797ac58cSKevin Wolf int64_t num; 1937797ac58cSKevin Wolf int ret; 1938797ac58cSKevin Wolf const char *retstr; 1939797ac58cSKevin Wolf 1940797ac58cSKevin Wolf offset = 0; 19414c7b7e9bSMax Reitz total_sectors = blk_nb_sectors(blk); 19424c7b7e9bSMax Reitz if (total_sectors < 0) { 19434c7b7e9bSMax Reitz error_report("Failed to query image length: %s", 19444c7b7e9bSMax Reitz strerror(-total_sectors)); 19454c7b7e9bSMax Reitz return 0; 19464c7b7e9bSMax Reitz } 19474c7b7e9bSMax Reitz 19484c7b7e9bSMax Reitz nb_sectors = total_sectors; 1949797ac58cSKevin Wolf 1950797ac58cSKevin Wolf do { 19514c7b7e9bSMax Reitz ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num); 1952797ac58cSKevin Wolf if (ret < 0) { 1953797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1954797ac58cSKevin Wolf return 0; 19554b25bbc4SMax Reitz } else if (!num) { 19564b25bbc4SMax Reitz error_report("Unexpected end of image"); 19574b25bbc4SMax Reitz return 0; 1958797ac58cSKevin Wolf } 1959797ac58cSKevin Wolf 1960797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1961797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 1962797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 1963797ac58cSKevin Wolf "at offset %s (%d)\n", 1964797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 1965797ac58cSKevin Wolf 1966797ac58cSKevin Wolf offset += num; 1967797ac58cSKevin Wolf nb_sectors -= num; 19684c7b7e9bSMax Reitz } while (offset < total_sectors); 1969797ac58cSKevin Wolf 1970797ac58cSKevin Wolf return 0; 1971797ac58cSKevin Wolf } 1972797ac58cSKevin Wolf 1973797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1974797ac58cSKevin Wolf .name = "map", 1975797ac58cSKevin Wolf .argmin = 0, 1976797ac58cSKevin Wolf .argmax = 0, 1977797ac58cSKevin Wolf .cfunc = map_f, 1978797ac58cSKevin Wolf .args = "", 1979797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1980797ac58cSKevin Wolf }; 1981797ac58cSKevin Wolf 1982*5bbd2e59SKevin Wolf static void reopen_help(void) 1983*5bbd2e59SKevin Wolf { 1984*5bbd2e59SKevin Wolf printf( 1985*5bbd2e59SKevin Wolf "\n" 1986*5bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 1987*5bbd2e59SKevin Wolf "\n" 1988*5bbd2e59SKevin Wolf " Example:\n" 1989*5bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 1990*5bbd2e59SKevin Wolf "\n" 1991*5bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 1992*5bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 1993*5bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 1994*5bbd2e59SKevin Wolf "\n"); 1995*5bbd2e59SKevin Wolf } 1996*5bbd2e59SKevin Wolf 1997*5bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 1998*5bbd2e59SKevin Wolf 1999*5bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 2000*5bbd2e59SKevin Wolf .name = "reopen", 2001*5bbd2e59SKevin Wolf .merge_lists = true, 2002*5bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 2003*5bbd2e59SKevin Wolf .desc = { 2004*5bbd2e59SKevin Wolf /* no elements => accept any params */ 2005*5bbd2e59SKevin Wolf { /* end of list */ } 2006*5bbd2e59SKevin Wolf }, 2007*5bbd2e59SKevin Wolf }; 2008*5bbd2e59SKevin Wolf 2009*5bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 2010*5bbd2e59SKevin Wolf .name = "reopen", 2011*5bbd2e59SKevin Wolf .argmin = 0, 2012*5bbd2e59SKevin Wolf .argmax = -1, 2013*5bbd2e59SKevin Wolf .cfunc = reopen_f, 2014*5bbd2e59SKevin Wolf .args = "[-r] [-c cache] [-o options]", 2015*5bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 2016*5bbd2e59SKevin Wolf .help = reopen_help, 2017*5bbd2e59SKevin Wolf }; 2018*5bbd2e59SKevin Wolf 2019*5bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 2020*5bbd2e59SKevin Wolf { 2021*5bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 2022*5bbd2e59SKevin Wolf QemuOpts *qopts; 2023*5bbd2e59SKevin Wolf QDict *opts; 2024*5bbd2e59SKevin Wolf int c; 2025*5bbd2e59SKevin Wolf int flags = bs->open_flags; 2026*5bbd2e59SKevin Wolf 2027*5bbd2e59SKevin Wolf BlockReopenQueue *brq; 2028*5bbd2e59SKevin Wolf Error *local_err = NULL; 2029*5bbd2e59SKevin Wolf 2030*5bbd2e59SKevin Wolf while ((c = getopt(argc, argv, "c:o:r")) != -1) { 2031*5bbd2e59SKevin Wolf switch (c) { 2032*5bbd2e59SKevin Wolf case 'c': 2033*5bbd2e59SKevin Wolf if (bdrv_parse_cache_flags(optarg, &flags) < 0) { 2034*5bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2035*5bbd2e59SKevin Wolf return 0; 2036*5bbd2e59SKevin Wolf } 2037*5bbd2e59SKevin Wolf break; 2038*5bbd2e59SKevin Wolf case 'o': 2039*5bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 2040*5bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2041*5bbd2e59SKevin Wolf return 0; 2042*5bbd2e59SKevin Wolf } 2043*5bbd2e59SKevin Wolf break; 2044*5bbd2e59SKevin Wolf case 'r': 2045*5bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2046*5bbd2e59SKevin Wolf break; 2047*5bbd2e59SKevin Wolf default: 2048*5bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2049*5bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 2050*5bbd2e59SKevin Wolf } 2051*5bbd2e59SKevin Wolf } 2052*5bbd2e59SKevin Wolf 2053*5bbd2e59SKevin Wolf if (optind != argc) { 2054*5bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2055*5bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 2056*5bbd2e59SKevin Wolf } 2057*5bbd2e59SKevin Wolf 2058*5bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2059*5bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 2060*5bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2061*5bbd2e59SKevin Wolf 2062*5bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 2063*5bbd2e59SKevin Wolf bdrv_reopen_multiple(brq, &local_err); 2064*5bbd2e59SKevin Wolf if (local_err) { 2065*5bbd2e59SKevin Wolf error_report_err(local_err); 2066*5bbd2e59SKevin Wolf } 2067*5bbd2e59SKevin Wolf 2068*5bbd2e59SKevin Wolf return 0; 2069*5bbd2e59SKevin Wolf } 2070*5bbd2e59SKevin Wolf 20714c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2072797ac58cSKevin Wolf { 2073797ac58cSKevin Wolf int ret; 2074797ac58cSKevin Wolf 20754c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2076797ac58cSKevin Wolf if (ret < 0) { 2077797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2078797ac58cSKevin Wolf } 2079797ac58cSKevin Wolf 2080797ac58cSKevin Wolf return 0; 2081797ac58cSKevin Wolf } 2082797ac58cSKevin Wolf 20834c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 20844cc70e93SFam Zheng { 20854cc70e93SFam Zheng int ret; 20864cc70e93SFam Zheng 20874c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 20884cc70e93SFam Zheng if (ret < 0) { 20894cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 20904cc70e93SFam Zheng } 20914cc70e93SFam Zheng 20924cc70e93SFam Zheng return 0; 20934cc70e93SFam Zheng } 20944cc70e93SFam Zheng 2095797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2096797ac58cSKevin Wolf .name = "break", 2097797ac58cSKevin Wolf .argmin = 2, 2098797ac58cSKevin Wolf .argmax = 2, 2099797ac58cSKevin Wolf .cfunc = break_f, 2100797ac58cSKevin Wolf .args = "event tag", 2101797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2102797ac58cSKevin Wolf "request as tag", 2103797ac58cSKevin Wolf }; 2104797ac58cSKevin Wolf 21054cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 21064cc70e93SFam Zheng .name = "remove_break", 21074cc70e93SFam Zheng .argmin = 1, 21084cc70e93SFam Zheng .argmax = 1, 21094cc70e93SFam Zheng .cfunc = remove_break_f, 21104cc70e93SFam Zheng .args = "tag", 21114cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 21124cc70e93SFam Zheng }; 21134cc70e93SFam Zheng 21144c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2115797ac58cSKevin Wolf { 2116797ac58cSKevin Wolf int ret; 2117797ac58cSKevin Wolf 21184c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2119797ac58cSKevin Wolf if (ret < 0) { 2120797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2121797ac58cSKevin Wolf } 2122797ac58cSKevin Wolf 2123797ac58cSKevin Wolf return 0; 2124797ac58cSKevin Wolf } 2125797ac58cSKevin Wolf 2126797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2127797ac58cSKevin Wolf .name = "resume", 2128797ac58cSKevin Wolf .argmin = 1, 2129797ac58cSKevin Wolf .argmax = 1, 2130797ac58cSKevin Wolf .cfunc = resume_f, 2131797ac58cSKevin Wolf .args = "tag", 2132797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2133797ac58cSKevin Wolf }; 2134797ac58cSKevin Wolf 21354c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2136797ac58cSKevin Wolf { 21374c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 21384c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2139797ac58cSKevin Wolf } 2140797ac58cSKevin Wolf 2141797ac58cSKevin Wolf return 0; 2142797ac58cSKevin Wolf } 2143797ac58cSKevin Wolf 2144797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2145797ac58cSKevin Wolf .name = "wait_break", 2146797ac58cSKevin Wolf .argmin = 1, 2147797ac58cSKevin Wolf .argmax = 1, 2148797ac58cSKevin Wolf .cfunc = wait_break_f, 2149797ac58cSKevin Wolf .args = "tag", 2150797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2151797ac58cSKevin Wolf }; 2152797ac58cSKevin Wolf 21534c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2154797ac58cSKevin Wolf { 2155797ac58cSKevin Wolf abort(); 2156797ac58cSKevin Wolf } 2157797ac58cSKevin Wolf 2158797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2159797ac58cSKevin Wolf .name = "abort", 2160797ac58cSKevin Wolf .cfunc = abort_f, 2161797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2162797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2163797ac58cSKevin Wolf }; 2164797ac58cSKevin Wolf 21650e82dc7bSMax Reitz static void sigraise_help(void) 21660e82dc7bSMax Reitz { 21670e82dc7bSMax Reitz printf( 21680e82dc7bSMax Reitz "\n" 21690e82dc7bSMax Reitz " raises the given signal\n" 21700e82dc7bSMax Reitz "\n" 21710e82dc7bSMax Reitz " Example:\n" 21720e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 21730e82dc7bSMax Reitz "\n" 21740e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 21750e82dc7bSMax Reitz " given to sigraise.\n" 21760e82dc7bSMax Reitz "\n", SIGTERM); 21770e82dc7bSMax Reitz } 21780e82dc7bSMax Reitz 21794c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 21800e82dc7bSMax Reitz 21810e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 21820e82dc7bSMax Reitz .name = "sigraise", 21830e82dc7bSMax Reitz .cfunc = sigraise_f, 21840e82dc7bSMax Reitz .argmin = 1, 21850e82dc7bSMax Reitz .argmax = 1, 21860e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 21870e82dc7bSMax Reitz .args = "signal", 21880e82dc7bSMax Reitz .oneline = "raises a signal", 21890e82dc7bSMax Reitz .help = sigraise_help, 21900e82dc7bSMax Reitz }; 21910e82dc7bSMax Reitz 21924c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 21930e82dc7bSMax Reitz { 21940e82dc7bSMax Reitz int sig = cvtnum(argv[1]); 21950e82dc7bSMax Reitz if (sig < 0) { 21960e82dc7bSMax Reitz printf("non-numeric signal number argument -- %s\n", argv[1]); 21970e82dc7bSMax Reitz return 0; 21980e82dc7bSMax Reitz } 21990e82dc7bSMax Reitz 22000e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 22010e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 22020e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 22030e82dc7bSMax Reitz fflush(stdout); 22040e82dc7bSMax Reitz fflush(stderr); 22050e82dc7bSMax Reitz 22060e82dc7bSMax Reitz raise(sig); 22070e82dc7bSMax Reitz return 0; 22080e82dc7bSMax Reitz } 22090e82dc7bSMax Reitz 2210cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2211cd33d02aSKevin Wolf { 2212cd33d02aSKevin Wolf bool *expired = opaque; 2213cd33d02aSKevin Wolf *expired = true; 2214cd33d02aSKevin Wolf } 2215cd33d02aSKevin Wolf 22164c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2217cd33d02aSKevin Wolf { 2218cd33d02aSKevin Wolf char *endptr; 2219cd33d02aSKevin Wolf long ms; 2220cd33d02aSKevin Wolf struct QEMUTimer *timer; 2221cd33d02aSKevin Wolf bool expired = false; 2222cd33d02aSKevin Wolf 2223cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2224cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2225cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2226cd33d02aSKevin Wolf return 0; 2227cd33d02aSKevin Wolf } 2228cd33d02aSKevin Wolf 2229cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2230cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2231cd33d02aSKevin Wolf 2232cd33d02aSKevin Wolf while (!expired) { 2233cd33d02aSKevin Wolf main_loop_wait(false); 2234cd33d02aSKevin Wolf } 2235cd33d02aSKevin Wolf 2236cd33d02aSKevin Wolf timer_free(timer); 2237cd33d02aSKevin Wolf 2238cd33d02aSKevin Wolf return 0; 2239cd33d02aSKevin Wolf } 2240cd33d02aSKevin Wolf 2241cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2242cd33d02aSKevin Wolf .name = "sleep", 2243cd33d02aSKevin Wolf .argmin = 1, 2244cd33d02aSKevin Wolf .argmax = 1, 2245cd33d02aSKevin Wolf .cfunc = sleep_f, 2246cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2247cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2248cd33d02aSKevin Wolf }; 2249cd33d02aSKevin Wolf 2250f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2251f18a834aSKevin Wolf { 2252f18a834aSKevin Wolf if (cmd) { 2253f18a834aSKevin Wolf printf("%s ", cmd); 2254f18a834aSKevin Wolf } else { 2255f18a834aSKevin Wolf printf("%s ", ct->name); 2256f18a834aSKevin Wolf if (ct->altname) { 2257f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2258f18a834aSKevin Wolf } 2259f18a834aSKevin Wolf } 2260f18a834aSKevin Wolf 2261f18a834aSKevin Wolf if (ct->args) { 2262f18a834aSKevin Wolf printf("%s ", ct->args); 2263f18a834aSKevin Wolf } 2264f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2265f18a834aSKevin Wolf } 2266f18a834aSKevin Wolf 2267f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2268f18a834aSKevin Wolf { 2269f18a834aSKevin Wolf help_oneline(cmd, ct); 2270f18a834aSKevin Wolf if (ct->help) { 2271f18a834aSKevin Wolf ct->help(); 2272f18a834aSKevin Wolf } 2273f18a834aSKevin Wolf } 2274f18a834aSKevin Wolf 2275f18a834aSKevin Wolf static void help_all(void) 2276f18a834aSKevin Wolf { 2277f18a834aSKevin Wolf const cmdinfo_t *ct; 2278f18a834aSKevin Wolf 2279f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2280f18a834aSKevin Wolf help_oneline(ct->name, ct); 2281f18a834aSKevin Wolf } 2282f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2283f18a834aSKevin Wolf } 2284f18a834aSKevin Wolf 22854c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2286f18a834aSKevin Wolf { 2287f18a834aSKevin Wolf const cmdinfo_t *ct; 2288f18a834aSKevin Wolf 2289f18a834aSKevin Wolf if (argc == 1) { 2290f18a834aSKevin Wolf help_all(); 2291f18a834aSKevin Wolf return 0; 2292f18a834aSKevin Wolf } 2293f18a834aSKevin Wolf 2294f18a834aSKevin Wolf ct = find_command(argv[1]); 2295f18a834aSKevin Wolf if (ct == NULL) { 2296f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2297f18a834aSKevin Wolf return 0; 2298f18a834aSKevin Wolf } 2299f18a834aSKevin Wolf 2300f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2301f18a834aSKevin Wolf return 0; 2302f18a834aSKevin Wolf } 2303f18a834aSKevin Wolf 2304f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2305f18a834aSKevin Wolf .name = "help", 2306f18a834aSKevin Wolf .altname = "?", 2307f18a834aSKevin Wolf .cfunc = help_f, 2308f18a834aSKevin Wolf .argmin = 0, 2309f18a834aSKevin Wolf .argmax = 1, 2310f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2311f18a834aSKevin Wolf .args = "[command]", 2312f18a834aSKevin Wolf .oneline = "help for one or all commands", 2313f18a834aSKevin Wolf }; 2314f18a834aSKevin Wolf 23154c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2316dd583296SKevin Wolf { 2317dd583296SKevin Wolf char *input; 2318dd583296SKevin Wolf const cmdinfo_t *ct; 2319dd583296SKevin Wolf char **v; 2320dd583296SKevin Wolf int c; 2321dd583296SKevin Wolf bool done = false; 2322dd583296SKevin Wolf 2323dd583296SKevin Wolf input = g_strdup(cmd); 2324dd583296SKevin Wolf v = breakline(input, &c); 2325dd583296SKevin Wolf if (c) { 2326dd583296SKevin Wolf ct = find_command(v[0]); 2327dd583296SKevin Wolf if (ct) { 23284c7b7e9bSMax Reitz done = command(blk, ct, c, v); 2329dd583296SKevin Wolf } else { 2330dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2331dd583296SKevin Wolf } 2332dd583296SKevin Wolf } 2333dd583296SKevin Wolf g_free(input); 2334dd583296SKevin Wolf g_free(v); 2335dd583296SKevin Wolf 2336dd583296SKevin Wolf return done; 2337dd583296SKevin Wolf } 2338dd583296SKevin Wolf 2339797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2340797ac58cSKevin Wolf { 2341797ac58cSKevin Wolf /* initialize commands */ 2342c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2343c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2344c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2345c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2346c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2347c2cdf5c5SKevin Wolf qemuio_add_command(&multiwrite_cmd); 2348c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2349c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2350c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2351c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2352c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2353c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2354c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2355c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2356c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2357c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 2358*5bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2359c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 23604cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2361c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2362c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2363c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2364cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 23650e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2366797ac58cSKevin Wolf } 2367