1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4093ea232SEric Blake * Copyright (C) 2009-2016 Red Hat, Inc. 5797ac58cSKevin Wolf * Copyright (c) 2003-2005 Silicon Graphics, Inc. 6797ac58cSKevin Wolf * 7797ac58cSKevin Wolf * This work is licensed under the terms of the GNU GPL, version 2 or later. 8797ac58cSKevin Wolf * See the COPYING file in the top-level directory. 9797ac58cSKevin Wolf */ 10797ac58cSKevin Wolf 1180c71a24SPeter Maydell #include "qemu/osdep.h" 12da34e65cSMarkus Armbruster #include "qapi/error.h" 133d21994fSKevin Wolf #include "qemu-io.h" 144c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 154c7b7e9bSMax Reitz #include "block/block.h" 164c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 17a8d8ecb7SMax Reitz #include "block/qapi.h" 18d49b6836SMarkus Armbruster #include "qemu/error-report.h" 196a1751b7SAlex Bligh #include "qemu/main-loop.h" 20922a01a0SMarkus Armbruster #include "qemu/option.h" 21cd33d02aSKevin Wolf #include "qemu/timer.h" 22f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 23797ac58cSKevin Wolf 24797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 25797ac58cSKevin Wolf 26f9883880SStefan Weil bool qemuio_misalign; 27797ac58cSKevin Wolf 28c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 29c2cdf5c5SKevin Wolf static int ncmds; 30c2cdf5c5SKevin Wolf 31c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 32c2cdf5c5SKevin Wolf { 33c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 34c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 35c2cdf5c5SKevin Wolf } 36c2cdf5c5SKevin Wolf 37c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 38c2cdf5c5SKevin Wolf { 396aabeb58SPeter Maydell /* ci->perm assumes a file is open, but the GLOBAL and NOFILE_OK 406aabeb58SPeter Maydell * flags allow it not to be, so that combination is invalid. 416aabeb58SPeter Maydell * Catch it now rather than letting it manifest as a crash if a 426aabeb58SPeter Maydell * particular set of command line options are used. 436aabeb58SPeter Maydell */ 446aabeb58SPeter Maydell assert(ci->perm == 0 || 456aabeb58SPeter Maydell (ci->flags & (CMD_FLAG_GLOBAL | CMD_NOFILE_OK)) == 0); 4602c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 47c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 48c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 49c2cdf5c5SKevin Wolf } 50c2cdf5c5SKevin Wolf 51*b444d0e9SMax Reitz void qemuio_command_usage(const cmdinfo_t *ci) 52c2cdf5c5SKevin Wolf { 53c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 54c2cdf5c5SKevin Wolf } 55c2cdf5c5SKevin Wolf 564c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 57c2cdf5c5SKevin Wolf { 58c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 59c2cdf5c5SKevin Wolf return 1; 60c2cdf5c5SKevin Wolf } 614c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 62c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 63c2cdf5c5SKevin Wolf return 0; 64c2cdf5c5SKevin Wolf } 65c2cdf5c5SKevin Wolf return 1; 66c2cdf5c5SKevin Wolf } 67c2cdf5c5SKevin Wolf 68*b444d0e9SMax Reitz static void command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 693d21994fSKevin Wolf char **argv) 70c2cdf5c5SKevin Wolf { 71c2cdf5c5SKevin Wolf char *cmd = argv[0]; 72c2cdf5c5SKevin Wolf 734c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 74*b444d0e9SMax Reitz return; 75c2cdf5c5SKevin Wolf } 76c2cdf5c5SKevin Wolf 77c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 78c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 79c2cdf5c5SKevin Wolf fprintf(stderr, 80c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 81c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 82c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 83c2cdf5c5SKevin Wolf fprintf(stderr, 84c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 85c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 86c2cdf5c5SKevin Wolf } else { 87c2cdf5c5SKevin Wolf fprintf(stderr, 88c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 89c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 90c2cdf5c5SKevin Wolf } 91*b444d0e9SMax Reitz return; 92c2cdf5c5SKevin Wolf } 93887354bdSKevin Wolf 94887354bdSKevin Wolf /* Request additional permissions if necessary for this command. The caller 95887354bdSKevin Wolf * is responsible for restoring the original permissions afterwards if this 96887354bdSKevin Wolf * is what it wants. */ 97887354bdSKevin Wolf if (ct->perm && blk_is_available(blk)) { 98887354bdSKevin Wolf uint64_t orig_perm, orig_shared_perm; 99887354bdSKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 100887354bdSKevin Wolf 101887354bdSKevin Wolf if (ct->perm & ~orig_perm) { 102887354bdSKevin Wolf uint64_t new_perm; 103887354bdSKevin Wolf Error *local_err = NULL; 104887354bdSKevin Wolf int ret; 105887354bdSKevin Wolf 106887354bdSKevin Wolf new_perm = orig_perm | ct->perm; 107887354bdSKevin Wolf 108887354bdSKevin Wolf ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err); 109887354bdSKevin Wolf if (ret < 0) { 110887354bdSKevin Wolf error_report_err(local_err); 111*b444d0e9SMax Reitz return; 112887354bdSKevin Wolf } 113887354bdSKevin Wolf } 114887354bdSKevin Wolf } 115887354bdSKevin Wolf 116c2cdf5c5SKevin Wolf optind = 0; 117*b444d0e9SMax Reitz ct->cfunc(blk, argc, argv); 118c2cdf5c5SKevin Wolf } 119c2cdf5c5SKevin Wolf 120c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 121c2cdf5c5SKevin Wolf { 122c2cdf5c5SKevin Wolf cmdinfo_t *ct; 123c2cdf5c5SKevin Wolf 124c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 125c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 126c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 127c2cdf5c5SKevin Wolf { 128c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 129c2cdf5c5SKevin Wolf } 130c2cdf5c5SKevin Wolf } 131c2cdf5c5SKevin Wolf return NULL; 132c2cdf5c5SKevin Wolf } 133c2cdf5c5SKevin Wolf 1344694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1354694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1364694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1374694020dSStefan Hajnoczi void *opaque) 1384694020dSStefan Hajnoczi { 1394694020dSStefan Hajnoczi cmdinfo_t *ct; 1404694020dSStefan Hajnoczi size_t input_len = strlen(input); 1414694020dSStefan Hajnoczi 1424694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1434694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1444694020dSStefan Hajnoczi fn(ct->name, opaque); 1454694020dSStefan Hajnoczi } 1464694020dSStefan Hajnoczi } 1474694020dSStefan Hajnoczi } 1484694020dSStefan Hajnoczi 149c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 150c2cdf5c5SKevin Wolf { 151c2cdf5c5SKevin Wolf int c = 0; 152c2cdf5c5SKevin Wolf char *p; 1535839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 154c2cdf5c5SKevin Wolf 155c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 156c2cdf5c5SKevin Wolf if (!*p) { 157c2cdf5c5SKevin Wolf continue; 158c2cdf5c5SKevin Wolf } 159c2cdf5c5SKevin Wolf c++; 16008193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 161c2cdf5c5SKevin Wolf rval[c - 1] = p; 162c2cdf5c5SKevin Wolf rval[c] = NULL; 163c2cdf5c5SKevin Wolf } 164c2cdf5c5SKevin Wolf *count = c; 165c2cdf5c5SKevin Wolf return rval; 166c2cdf5c5SKevin Wolf } 167c2cdf5c5SKevin Wolf 168797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 169797ac58cSKevin Wolf { 170f17fd4fdSMarkus Armbruster int err; 171f46bfdbfSMarkus Armbruster uint64_t value; 172ef5a7885SJohn Snow 173f17fd4fdSMarkus Armbruster err = qemu_strtosz(s, NULL, &value); 174f17fd4fdSMarkus Armbruster if (err < 0) { 175f17fd4fdSMarkus Armbruster return err; 176f17fd4fdSMarkus Armbruster } 177f46bfdbfSMarkus Armbruster if (value > INT64_MAX) { 178f46bfdbfSMarkus Armbruster return -ERANGE; 179f46bfdbfSMarkus Armbruster } 180f17fd4fdSMarkus Armbruster return value; 181797ac58cSKevin Wolf } 182797ac58cSKevin Wolf 183a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 184a9ecfa00SJohn Snow { 185a9ecfa00SJohn Snow switch (rc) { 186a9ecfa00SJohn Snow case -EINVAL: 187a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 188a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 189a9ecfa00SJohn Snow break; 190a9ecfa00SJohn Snow case -ERANGE: 191a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 192a9ecfa00SJohn Snow break; 193a9ecfa00SJohn Snow default: 194a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 195a9ecfa00SJohn Snow } 196a9ecfa00SJohn Snow } 197a9ecfa00SJohn Snow 1980b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 1990b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 2000b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 2010b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 2020b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 2030b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 2040b613881SKevin Wolf 2050b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 2060b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 2070b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 2080b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 2090b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 2100b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 2110b613881SKevin Wolf 2120b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 2130b613881SKevin Wolf { 2140b613881SKevin Wolf char *trim; 2150b613881SKevin Wolf const char *suffix; 2160b613881SKevin Wolf 2170b613881SKevin Wolf if (value >= EXABYTES(1)) { 2180b613881SKevin Wolf suffix = " EiB"; 2190b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 2200b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 2210b613881SKevin Wolf suffix = " PiB"; 2220b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 2230b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 2240b613881SKevin Wolf suffix = " TiB"; 2250b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 2260b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 2270b613881SKevin Wolf suffix = " GiB"; 2280b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 2290b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 2300b613881SKevin Wolf suffix = " MiB"; 2310b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2320b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2330b613881SKevin Wolf suffix = " KiB"; 2340b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2350b613881SKevin Wolf } else { 2360b613881SKevin Wolf suffix = " bytes"; 2370b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2380b613881SKevin Wolf } 2390b613881SKevin Wolf 2400b613881SKevin Wolf trim = strstr(str, ".000"); 2410b613881SKevin Wolf if (trim) { 2420b613881SKevin Wolf strcpy(trim, suffix); 2430b613881SKevin Wolf } else { 2440b613881SKevin Wolf strcat(str, suffix); 2450b613881SKevin Wolf } 2460b613881SKevin Wolf } 2470b613881SKevin Wolf 2480b613881SKevin Wolf 2490b613881SKevin Wolf 2500b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2510b613881SKevin Wolf { 2520b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2530b613881SKevin Wolf if (t1.tv_usec < 0) { 2540b613881SKevin Wolf t1.tv_usec += 1000000; 2550b613881SKevin Wolf t1.tv_sec--; 2560b613881SKevin Wolf } 2570b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2580b613881SKevin Wolf return t1; 2590b613881SKevin Wolf } 2600b613881SKevin Wolf 2610b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2620b613881SKevin Wolf { 2630b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2640b613881SKevin Wolf } 2650b613881SKevin Wolf 2660b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2670b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2680b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2690b613881SKevin Wolf 2700b613881SKevin Wolf enum { 2710b613881SKevin Wolf DEFAULT_TIME = 0x0, 2720b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2730b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2740b613881SKevin Wolf }; 2750b613881SKevin Wolf 2760b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2770b613881SKevin Wolf { 2780b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2790b613881SKevin Wolf 2800b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2810b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2820b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2830b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2840b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2850b613881SKevin Wolf (unsigned int) (usec * 100)); 2860b613881SKevin Wolf return; 2870b613881SKevin Wolf } 2880b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2890b613881SKevin Wolf } 2900b613881SKevin Wolf 2910b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2920b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2930b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2940b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2950b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2960b613881SKevin Wolf (unsigned int) (usec * 100)); 2970b613881SKevin Wolf } else { 2980b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 2990b613881SKevin Wolf } 3000b613881SKevin Wolf } 3010b613881SKevin Wolf 302797ac58cSKevin Wolf /* 303797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 304797ac58cSKevin Wolf * 305797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 306797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 307797ac58cSKevin Wolf */ 308797ac58cSKevin Wolf static int parse_pattern(const char *arg) 309797ac58cSKevin Wolf { 310797ac58cSKevin Wolf char *endptr = NULL; 311797ac58cSKevin Wolf long pattern; 312797ac58cSKevin Wolf 313797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 314797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 315797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 316797ac58cSKevin Wolf return -1; 317797ac58cSKevin Wolf } 318797ac58cSKevin Wolf 319797ac58cSKevin Wolf return pattern; 320797ac58cSKevin Wolf } 321797ac58cSKevin Wolf 322797ac58cSKevin Wolf /* 323797ac58cSKevin Wolf * Memory allocation helpers. 324797ac58cSKevin Wolf * 325797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 326797ac58cSKevin Wolf * that is specified on the command line. 327797ac58cSKevin Wolf */ 328797ac58cSKevin Wolf 329797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3304c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 331797ac58cSKevin Wolf { 332797ac58cSKevin Wolf void *buf; 333797ac58cSKevin Wolf 334797ac58cSKevin Wolf if (qemuio_misalign) { 335797ac58cSKevin Wolf len += MISALIGN_OFFSET; 336797ac58cSKevin Wolf } 3374c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 338797ac58cSKevin Wolf memset(buf, pattern, len); 339797ac58cSKevin Wolf if (qemuio_misalign) { 340797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 341797ac58cSKevin Wolf } 342797ac58cSKevin Wolf return buf; 343797ac58cSKevin Wolf } 344797ac58cSKevin Wolf 345797ac58cSKevin Wolf static void qemu_io_free(void *p) 346797ac58cSKevin Wolf { 347797ac58cSKevin Wolf if (qemuio_misalign) { 348797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 349797ac58cSKevin Wolf } 350797ac58cSKevin Wolf qemu_vfree(p); 351797ac58cSKevin Wolf } 352797ac58cSKevin Wolf 3539b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 354797ac58cSKevin Wolf { 3559b0beaf3SJohn Snow uint64_t i; 3569b0beaf3SJohn Snow int j; 357797ac58cSKevin Wolf const uint8_t *p; 358797ac58cSKevin Wolf 359797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 360797ac58cSKevin Wolf const uint8_t *s = p; 361797ac58cSKevin Wolf 362797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 363797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 364797ac58cSKevin Wolf printf("%02x ", *p); 365797ac58cSKevin Wolf } 366797ac58cSKevin Wolf printf(" "); 367797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 368797ac58cSKevin Wolf if (isalnum(*s)) { 369797ac58cSKevin Wolf printf("%c", *s); 370797ac58cSKevin Wolf } else { 371797ac58cSKevin Wolf printf("."); 372797ac58cSKevin Wolf } 373797ac58cSKevin Wolf } 374797ac58cSKevin Wolf printf("\n"); 375797ac58cSKevin Wolf } 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf 378797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 379dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 380797ac58cSKevin Wolf { 381797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 382797ac58cSKevin Wolf 383797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 384797ac58cSKevin Wolf if (!Cflag) { 385797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 386797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3879b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 388797ac58cSKevin Wolf op, total, count, offset); 389797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 390797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 391797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3929b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 393797ac58cSKevin Wolf total, cnt, ts, 394797ac58cSKevin Wolf tdiv((double)total, *t), 395797ac58cSKevin Wolf tdiv((double)cnt, *t)); 396797ac58cSKevin Wolf } 397797ac58cSKevin Wolf } 398797ac58cSKevin Wolf 399797ac58cSKevin Wolf /* 400797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 401797ac58cSKevin Wolf * vector matching it. 402797ac58cSKevin Wolf */ 403797ac58cSKevin Wolf static void * 4044c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 405797ac58cSKevin Wolf int pattern) 406797ac58cSKevin Wolf { 407797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 408797ac58cSKevin Wolf size_t count = 0; 409797ac58cSKevin Wolf void *buf = NULL; 410797ac58cSKevin Wolf void *p; 411797ac58cSKevin Wolf int i; 412797ac58cSKevin Wolf 413797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 414797ac58cSKevin Wolf char *arg = argv[i]; 415797ac58cSKevin Wolf int64_t len; 416797ac58cSKevin Wolf 417797ac58cSKevin Wolf len = cvtnum(arg); 418797ac58cSKevin Wolf if (len < 0) { 419a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 420797ac58cSKevin Wolf goto fail; 421797ac58cSKevin Wolf } 422797ac58cSKevin Wolf 4233026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 4243026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 4253026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 4263026c468SAlberto Garcia goto fail; 4273026c468SAlberto Garcia } 4283026c468SAlberto Garcia 4293026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 4303026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 4313026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 432797ac58cSKevin Wolf goto fail; 433797ac58cSKevin Wolf } 434797ac58cSKevin Wolf 435797ac58cSKevin Wolf sizes[i] = len; 436797ac58cSKevin Wolf count += len; 437797ac58cSKevin Wolf } 438797ac58cSKevin Wolf 439797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 440797ac58cSKevin Wolf 4414c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 442797ac58cSKevin Wolf 443797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 444797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 445797ac58cSKevin Wolf p += sizes[i]; 446797ac58cSKevin Wolf } 447797ac58cSKevin Wolf 448797ac58cSKevin Wolf fail: 449797ac58cSKevin Wolf g_free(sizes); 450797ac58cSKevin Wolf return buf; 451797ac58cSKevin Wolf } 452797ac58cSKevin Wolf 4539b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 454f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 455797ac58cSKevin Wolf { 456f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4579b0beaf3SJohn Snow return -ERANGE; 4589b0beaf3SJohn Snow } 4599b0beaf3SJohn Snow 460f5a5ca79SManos Pitsidianakis *total = blk_pread(blk, offset, (uint8_t *)buf, bytes); 461797ac58cSKevin Wolf if (*total < 0) { 462797ac58cSKevin Wolf return *total; 463797ac58cSKevin Wolf } 464797ac58cSKevin Wolf return 1; 465797ac58cSKevin Wolf } 466797ac58cSKevin Wolf 4679b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 468f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 469797ac58cSKevin Wolf { 470f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4719b0beaf3SJohn Snow return -ERANGE; 4729b0beaf3SJohn Snow } 4739b0beaf3SJohn Snow 474f5a5ca79SManos Pitsidianakis *total = blk_pwrite(blk, offset, (uint8_t *)buf, bytes, flags); 475797ac58cSKevin Wolf if (*total < 0) { 476797ac58cSKevin Wolf return *total; 477797ac58cSKevin Wolf } 478797ac58cSKevin Wolf return 1; 479797ac58cSKevin Wolf } 480797ac58cSKevin Wolf 481797ac58cSKevin Wolf typedef struct { 4824c7b7e9bSMax Reitz BlockBackend *blk; 483797ac58cSKevin Wolf int64_t offset; 484f5a5ca79SManos Pitsidianakis int64_t bytes; 4859b0beaf3SJohn Snow int64_t *total; 486770e0e0eSEric Blake int flags; 487797ac58cSKevin Wolf int ret; 488797ac58cSKevin Wolf bool done; 489797ac58cSKevin Wolf } CoWriteZeroes; 490797ac58cSKevin Wolf 491d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 492797ac58cSKevin Wolf { 493797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 494797ac58cSKevin Wolf 495f5a5ca79SManos Pitsidianakis data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->bytes, 496770e0e0eSEric Blake data->flags); 497797ac58cSKevin Wolf data->done = true; 498797ac58cSKevin Wolf if (data->ret < 0) { 499797ac58cSKevin Wolf *data->total = data->ret; 500797ac58cSKevin Wolf return; 501797ac58cSKevin Wolf } 502797ac58cSKevin Wolf 503f5a5ca79SManos Pitsidianakis *data->total = data->bytes; 504797ac58cSKevin Wolf } 505797ac58cSKevin Wolf 506d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 507f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 508797ac58cSKevin Wolf { 509797ac58cSKevin Wolf Coroutine *co; 510797ac58cSKevin Wolf CoWriteZeroes data = { 5114c7b7e9bSMax Reitz .blk = blk, 512797ac58cSKevin Wolf .offset = offset, 513f5a5ca79SManos Pitsidianakis .bytes = bytes, 514797ac58cSKevin Wolf .total = total, 515770e0e0eSEric Blake .flags = flags, 516797ac58cSKevin Wolf .done = false, 517797ac58cSKevin Wolf }; 518797ac58cSKevin Wolf 519f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5209b0beaf3SJohn Snow return -ERANGE; 5219b0beaf3SJohn Snow } 5229b0beaf3SJohn Snow 5230b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 524324ec3e4SFam Zheng bdrv_coroutine_enter(blk_bs(blk), co); 525797ac58cSKevin Wolf while (!data.done) { 5264c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 527797ac58cSKevin Wolf } 528797ac58cSKevin Wolf if (data.ret < 0) { 529797ac58cSKevin Wolf return data.ret; 530797ac58cSKevin Wolf } else { 531797ac58cSKevin Wolf return 1; 532797ac58cSKevin Wolf } 533797ac58cSKevin Wolf } 534797ac58cSKevin Wolf 5354c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 536f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 537797ac58cSKevin Wolf { 538797ac58cSKevin Wolf int ret; 539797ac58cSKevin Wolf 540f5a5ca79SManos Pitsidianakis if (bytes >> 9 > BDRV_REQUEST_MAX_SECTORS) { 5419b0beaf3SJohn Snow return -ERANGE; 5429b0beaf3SJohn Snow } 5439b0beaf3SJohn Snow 544f5a5ca79SManos Pitsidianakis ret = blk_pwrite_compressed(blk, offset, buf, bytes); 545797ac58cSKevin Wolf if (ret < 0) { 546797ac58cSKevin Wolf return ret; 547797ac58cSKevin Wolf } 548f5a5ca79SManos Pitsidianakis *total = bytes; 549797ac58cSKevin Wolf return 1; 550797ac58cSKevin Wolf } 551797ac58cSKevin Wolf 5524c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5539b0beaf3SJohn Snow int64_t count, int64_t *total) 554797ac58cSKevin Wolf { 5559b0beaf3SJohn Snow if (count > INT_MAX) { 5569b0beaf3SJohn Snow return -ERANGE; 5579b0beaf3SJohn Snow } 5589b0beaf3SJohn Snow 5594c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 560797ac58cSKevin Wolf if (*total < 0) { 561797ac58cSKevin Wolf return *total; 562797ac58cSKevin Wolf } 563797ac58cSKevin Wolf return 1; 564797ac58cSKevin Wolf } 565797ac58cSKevin Wolf 5664c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5679b0beaf3SJohn Snow int64_t count, int64_t *total) 568797ac58cSKevin Wolf { 5699b0beaf3SJohn Snow if (count > INT_MAX) { 5709b0beaf3SJohn Snow return -ERANGE; 5719b0beaf3SJohn Snow } 5729b0beaf3SJohn Snow 5734c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 574797ac58cSKevin Wolf if (*total < 0) { 575797ac58cSKevin Wolf return *total; 576797ac58cSKevin Wolf } 577797ac58cSKevin Wolf return 1; 578797ac58cSKevin Wolf } 579797ac58cSKevin Wolf 580797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 581797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 582797ac58cSKevin Wolf { 583797ac58cSKevin Wolf *(int *)opaque = ret; 584797ac58cSKevin Wolf } 585797ac58cSKevin Wolf 5864c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 587797ac58cSKevin Wolf int64_t offset, int *total) 588797ac58cSKevin Wolf { 589797ac58cSKevin Wolf int async_ret = NOT_DONE; 590797ac58cSKevin Wolf 5917b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 592797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 593797ac58cSKevin Wolf main_loop_wait(false); 594797ac58cSKevin Wolf } 595797ac58cSKevin Wolf 596797ac58cSKevin Wolf *total = qiov->size; 597797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 598797ac58cSKevin Wolf } 599797ac58cSKevin Wolf 6004c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 601770e0e0eSEric Blake int64_t offset, int flags, int *total) 602797ac58cSKevin Wolf { 603797ac58cSKevin Wolf int async_ret = NOT_DONE; 604797ac58cSKevin Wolf 605770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 606797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 607797ac58cSKevin Wolf main_loop_wait(false); 608797ac58cSKevin Wolf } 609797ac58cSKevin Wolf 610797ac58cSKevin Wolf *total = qiov->size; 611797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 612797ac58cSKevin Wolf } 613797ac58cSKevin Wolf 614797ac58cSKevin Wolf static void read_help(void) 615797ac58cSKevin Wolf { 616797ac58cSKevin Wolf printf( 617797ac58cSKevin Wolf "\n" 618797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 619797ac58cSKevin Wolf "\n" 620797ac58cSKevin Wolf " Example:\n" 621797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 622797ac58cSKevin Wolf "\n" 623797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 624797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 625797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 626797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 627797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 628093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 629797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 630797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 631797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 632797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 633797ac58cSKevin Wolf "\n"); 634797ac58cSKevin Wolf } 635797ac58cSKevin Wolf 636*b444d0e9SMax Reitz static void read_f(BlockBackend *blk, int argc, char **argv); 637797ac58cSKevin Wolf 638797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 639797ac58cSKevin Wolf .name = "read", 640797ac58cSKevin Wolf .altname = "r", 641797ac58cSKevin Wolf .cfunc = read_f, 642797ac58cSKevin Wolf .argmin = 2, 643797ac58cSKevin Wolf .argmax = -1, 644093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 645797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 646797ac58cSKevin Wolf .help = read_help, 647797ac58cSKevin Wolf }; 648797ac58cSKevin Wolf 649*b444d0e9SMax Reitz static void read_f(BlockBackend *blk, int argc, char **argv) 650797ac58cSKevin Wolf { 651797ac58cSKevin Wolf struct timeval t1, t2; 652093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 653dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 654797ac58cSKevin Wolf int c, cnt; 655797ac58cSKevin Wolf char *buf; 656797ac58cSKevin Wolf int64_t offset; 6579b0beaf3SJohn Snow int64_t count; 658797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6599b0beaf3SJohn Snow int64_t total = 0; 6609b0beaf3SJohn Snow int pattern = 0; 6619b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 662797ac58cSKevin Wolf 663b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 664797ac58cSKevin Wolf switch (c) { 665797ac58cSKevin Wolf case 'b': 666dc38852aSEric Blake bflag = true; 667797ac58cSKevin Wolf break; 668797ac58cSKevin Wolf case 'C': 669dc38852aSEric Blake Cflag = true; 670797ac58cSKevin Wolf break; 671797ac58cSKevin Wolf case 'l': 672dc38852aSEric Blake lflag = true; 673797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 674797ac58cSKevin Wolf if (pattern_count < 0) { 675a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 676*b444d0e9SMax Reitz return; 677797ac58cSKevin Wolf } 678797ac58cSKevin Wolf break; 679797ac58cSKevin Wolf case 'p': 680093ea232SEric Blake /* Ignored for backwards compatibility */ 681797ac58cSKevin Wolf break; 682797ac58cSKevin Wolf case 'P': 683dc38852aSEric Blake Pflag = true; 684797ac58cSKevin Wolf pattern = parse_pattern(optarg); 685797ac58cSKevin Wolf if (pattern < 0) { 686*b444d0e9SMax Reitz return; 687797ac58cSKevin Wolf } 688797ac58cSKevin Wolf break; 689797ac58cSKevin Wolf case 'q': 690dc38852aSEric Blake qflag = true; 691797ac58cSKevin Wolf break; 692797ac58cSKevin Wolf case 's': 693dc38852aSEric Blake sflag = true; 694797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 695797ac58cSKevin Wolf if (pattern_offset < 0) { 696a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 697*b444d0e9SMax Reitz return; 698797ac58cSKevin Wolf } 699797ac58cSKevin Wolf break; 700797ac58cSKevin Wolf case 'v': 701dc38852aSEric Blake vflag = true; 702797ac58cSKevin Wolf break; 703797ac58cSKevin Wolf default: 704*b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 705*b444d0e9SMax Reitz return; 706797ac58cSKevin Wolf } 707797ac58cSKevin Wolf } 708797ac58cSKevin Wolf 709797ac58cSKevin Wolf if (optind != argc - 2) { 710*b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 711*b444d0e9SMax Reitz return; 712797ac58cSKevin Wolf } 713797ac58cSKevin Wolf 714797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 715797ac58cSKevin Wolf if (offset < 0) { 716a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 717*b444d0e9SMax Reitz return; 718797ac58cSKevin Wolf } 719797ac58cSKevin Wolf 720797ac58cSKevin Wolf optind++; 721797ac58cSKevin Wolf count = cvtnum(argv[optind]); 722797ac58cSKevin Wolf if (count < 0) { 723a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 724*b444d0e9SMax Reitz return; 7253026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7269b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7273026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 728*b444d0e9SMax Reitz return; 729797ac58cSKevin Wolf } 730797ac58cSKevin Wolf 731797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 732*b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 733*b444d0e9SMax Reitz return; 734797ac58cSKevin Wolf } 735797ac58cSKevin Wolf 736797ac58cSKevin Wolf if (!lflag) { 737797ac58cSKevin Wolf pattern_count = count - pattern_offset; 738797ac58cSKevin Wolf } 739797ac58cSKevin Wolf 740797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 741797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 742*b444d0e9SMax Reitz return; 743797ac58cSKevin Wolf } 744797ac58cSKevin Wolf 745093ea232SEric Blake if (bflag) { 7461bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 7471bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 748797ac58cSKevin Wolf offset); 749*b444d0e9SMax Reitz return; 750797ac58cSKevin Wolf } 7511bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 7521bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 753797ac58cSKevin Wolf count); 754*b444d0e9SMax Reitz return; 755797ac58cSKevin Wolf } 756797ac58cSKevin Wolf } 757797ac58cSKevin Wolf 7584c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 759797ac58cSKevin Wolf 760797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7617b3f9712SEric Blake if (bflag) { 7624c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 763797ac58cSKevin Wolf } else { 7647b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 765797ac58cSKevin Wolf } 766797ac58cSKevin Wolf gettimeofday(&t2, NULL); 767797ac58cSKevin Wolf 768797ac58cSKevin Wolf if (cnt < 0) { 769797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 770797ac58cSKevin Wolf goto out; 771797ac58cSKevin Wolf } 772797ac58cSKevin Wolf 773797ac58cSKevin Wolf if (Pflag) { 774797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 775797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 776797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 777797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7789b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 779797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 780797ac58cSKevin Wolf } 781797ac58cSKevin Wolf g_free(cmp_buf); 782797ac58cSKevin Wolf } 783797ac58cSKevin Wolf 784797ac58cSKevin Wolf if (qflag) { 785797ac58cSKevin Wolf goto out; 786797ac58cSKevin Wolf } 787797ac58cSKevin Wolf 788797ac58cSKevin Wolf if (vflag) { 789797ac58cSKevin Wolf dump_buffer(buf, offset, count); 790797ac58cSKevin Wolf } 791797ac58cSKevin Wolf 792797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 793797ac58cSKevin Wolf t2 = tsub(t2, t1); 794797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 795797ac58cSKevin Wolf 796797ac58cSKevin Wolf out: 797797ac58cSKevin Wolf qemu_io_free(buf); 798797ac58cSKevin Wolf } 799797ac58cSKevin Wolf 800797ac58cSKevin Wolf static void readv_help(void) 801797ac58cSKevin Wolf { 802797ac58cSKevin Wolf printf( 803797ac58cSKevin Wolf "\n" 804797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 805797ac58cSKevin Wolf "\n" 806797ac58cSKevin Wolf " Example:\n" 807797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 808797ac58cSKevin Wolf "\n" 809797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 810797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 811797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 812797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 813797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 814797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 815797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 816797ac58cSKevin Wolf "\n"); 817797ac58cSKevin Wolf } 818797ac58cSKevin Wolf 819*b444d0e9SMax Reitz static void readv_f(BlockBackend *blk, int argc, char **argv); 820797ac58cSKevin Wolf 821797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 822797ac58cSKevin Wolf .name = "readv", 823797ac58cSKevin Wolf .cfunc = readv_f, 824797ac58cSKevin Wolf .argmin = 2, 825797ac58cSKevin Wolf .argmax = -1, 826797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 827797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 828797ac58cSKevin Wolf .help = readv_help, 829797ac58cSKevin Wolf }; 830797ac58cSKevin Wolf 831*b444d0e9SMax Reitz static void readv_f(BlockBackend *blk, int argc, char **argv) 832797ac58cSKevin Wolf { 833797ac58cSKevin Wolf struct timeval t1, t2; 834dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 835797ac58cSKevin Wolf int c, cnt; 836797ac58cSKevin Wolf char *buf; 837797ac58cSKevin Wolf int64_t offset; 838797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 839797ac58cSKevin Wolf int total = 0; 840797ac58cSKevin Wolf int nr_iov; 841797ac58cSKevin Wolf QEMUIOVector qiov; 842797ac58cSKevin Wolf int pattern = 0; 843dc38852aSEric Blake bool Pflag = false; 844797ac58cSKevin Wolf 845b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 846797ac58cSKevin Wolf switch (c) { 847797ac58cSKevin Wolf case 'C': 848dc38852aSEric Blake Cflag = true; 849797ac58cSKevin Wolf break; 850797ac58cSKevin Wolf case 'P': 851dc38852aSEric Blake Pflag = true; 852797ac58cSKevin Wolf pattern = parse_pattern(optarg); 853797ac58cSKevin Wolf if (pattern < 0) { 854*b444d0e9SMax Reitz return; 855797ac58cSKevin Wolf } 856797ac58cSKevin Wolf break; 857797ac58cSKevin Wolf case 'q': 858dc38852aSEric Blake qflag = true; 859797ac58cSKevin Wolf break; 860797ac58cSKevin Wolf case 'v': 861dc38852aSEric Blake vflag = true; 862797ac58cSKevin Wolf break; 863797ac58cSKevin Wolf default: 864*b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 865*b444d0e9SMax Reitz return; 866797ac58cSKevin Wolf } 867797ac58cSKevin Wolf } 868797ac58cSKevin Wolf 869797ac58cSKevin Wolf if (optind > argc - 2) { 870*b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 871*b444d0e9SMax Reitz return; 872797ac58cSKevin Wolf } 873797ac58cSKevin Wolf 874797ac58cSKevin Wolf 875797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 876797ac58cSKevin Wolf if (offset < 0) { 877a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 878*b444d0e9SMax Reitz return; 879797ac58cSKevin Wolf } 880797ac58cSKevin Wolf optind++; 881797ac58cSKevin Wolf 882797ac58cSKevin Wolf nr_iov = argc - optind; 8834c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 884797ac58cSKevin Wolf if (buf == NULL) { 885*b444d0e9SMax Reitz return; 886797ac58cSKevin Wolf } 887797ac58cSKevin Wolf 888797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8894c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 890797ac58cSKevin Wolf gettimeofday(&t2, NULL); 891797ac58cSKevin Wolf 892797ac58cSKevin Wolf if (cnt < 0) { 893797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 894797ac58cSKevin Wolf goto out; 895797ac58cSKevin Wolf } 896797ac58cSKevin Wolf 897797ac58cSKevin Wolf if (Pflag) { 898797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 899797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 900797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 901797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 902797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 903797ac58cSKevin Wolf } 904797ac58cSKevin Wolf g_free(cmp_buf); 905797ac58cSKevin Wolf } 906797ac58cSKevin Wolf 907797ac58cSKevin Wolf if (qflag) { 908797ac58cSKevin Wolf goto out; 909797ac58cSKevin Wolf } 910797ac58cSKevin Wolf 911797ac58cSKevin Wolf if (vflag) { 912797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 913797ac58cSKevin Wolf } 914797ac58cSKevin Wolf 915797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 916797ac58cSKevin Wolf t2 = tsub(t2, t1); 917797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 918797ac58cSKevin Wolf 919797ac58cSKevin Wolf out: 920797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 921797ac58cSKevin Wolf qemu_io_free(buf); 922797ac58cSKevin Wolf } 923797ac58cSKevin Wolf 924797ac58cSKevin Wolf static void write_help(void) 925797ac58cSKevin Wolf { 926797ac58cSKevin Wolf printf( 927797ac58cSKevin Wolf "\n" 928797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 929797ac58cSKevin Wolf "\n" 930797ac58cSKevin Wolf " Example:\n" 931797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 932797ac58cSKevin Wolf "\n" 933797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 934797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 935797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9364c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 937770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 938093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 939797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 940797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 941797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 942c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 943d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 944797ac58cSKevin Wolf "\n"); 945797ac58cSKevin Wolf } 946797ac58cSKevin Wolf 947*b444d0e9SMax Reitz static void write_f(BlockBackend *blk, int argc, char **argv); 948797ac58cSKevin Wolf 949797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 950797ac58cSKevin Wolf .name = "write", 951797ac58cSKevin Wolf .altname = "w", 952797ac58cSKevin Wolf .cfunc = write_f, 953887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 954797ac58cSKevin Wolf .argmin = 2, 955797ac58cSKevin Wolf .argmax = -1, 956c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 957797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 958797ac58cSKevin Wolf .help = write_help, 959797ac58cSKevin Wolf }; 960797ac58cSKevin Wolf 961*b444d0e9SMax Reitz static void write_f(BlockBackend *blk, int argc, char **argv) 962797ac58cSKevin Wolf { 963797ac58cSKevin Wolf struct timeval t1, t2; 964093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 965dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 966770e0e0eSEric Blake int flags = 0; 967797ac58cSKevin Wolf int c, cnt; 968797ac58cSKevin Wolf char *buf = NULL; 969797ac58cSKevin Wolf int64_t offset; 9709b0beaf3SJohn Snow int64_t count; 971797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9729b0beaf3SJohn Snow int64_t total = 0; 973797ac58cSKevin Wolf int pattern = 0xcd; 974797ac58cSKevin Wolf 975c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 976797ac58cSKevin Wolf switch (c) { 977797ac58cSKevin Wolf case 'b': 978dc38852aSEric Blake bflag = true; 979797ac58cSKevin Wolf break; 980797ac58cSKevin Wolf case 'c': 981dc38852aSEric Blake cflag = true; 982797ac58cSKevin Wolf break; 983797ac58cSKevin Wolf case 'C': 984dc38852aSEric Blake Cflag = true; 985797ac58cSKevin Wolf break; 986770e0e0eSEric Blake case 'f': 987770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 988770e0e0eSEric Blake break; 989797ac58cSKevin Wolf case 'p': 990093ea232SEric Blake /* Ignored for backwards compatibility */ 991797ac58cSKevin Wolf break; 992797ac58cSKevin Wolf case 'P': 993dc38852aSEric Blake Pflag = true; 994797ac58cSKevin Wolf pattern = parse_pattern(optarg); 995797ac58cSKevin Wolf if (pattern < 0) { 996*b444d0e9SMax Reitz return; 997797ac58cSKevin Wolf } 998797ac58cSKevin Wolf break; 999797ac58cSKevin Wolf case 'q': 1000dc38852aSEric Blake qflag = true; 1001797ac58cSKevin Wolf break; 1002c2e001ccSEric Blake case 'u': 1003c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1004c2e001ccSEric Blake break; 1005797ac58cSKevin Wolf case 'z': 1006dc38852aSEric Blake zflag = true; 1007797ac58cSKevin Wolf break; 1008797ac58cSKevin Wolf default: 1009*b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1010*b444d0e9SMax Reitz return; 1011797ac58cSKevin Wolf } 1012797ac58cSKevin Wolf } 1013797ac58cSKevin Wolf 1014797ac58cSKevin Wolf if (optind != argc - 2) { 1015*b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1016*b444d0e9SMax Reitz return; 1017797ac58cSKevin Wolf } 1018797ac58cSKevin Wolf 1019093ea232SEric Blake if (bflag && zflag) { 1020093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1021*b444d0e9SMax Reitz return; 1022797ac58cSKevin Wolf } 1023797ac58cSKevin Wolf 1024770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1025770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1026*b444d0e9SMax Reitz return; 1027770e0e0eSEric Blake } 1028770e0e0eSEric Blake 1029c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1030c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1031*b444d0e9SMax Reitz return; 1032c2e001ccSEric Blake } 1033c2e001ccSEric Blake 1034797ac58cSKevin Wolf if (zflag && Pflag) { 1035797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1036*b444d0e9SMax Reitz return; 1037797ac58cSKevin Wolf } 1038797ac58cSKevin Wolf 1039797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1040797ac58cSKevin Wolf if (offset < 0) { 1041a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1042*b444d0e9SMax Reitz return; 1043797ac58cSKevin Wolf } 1044797ac58cSKevin Wolf 1045797ac58cSKevin Wolf optind++; 1046797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1047797ac58cSKevin Wolf if (count < 0) { 1048a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1049*b444d0e9SMax Reitz return; 10503026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10519b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10523026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1053*b444d0e9SMax Reitz return; 1054797ac58cSKevin Wolf } 1055797ac58cSKevin Wolf 1056093ea232SEric Blake if (bflag || cflag) { 10571bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 10581bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1059797ac58cSKevin Wolf offset); 1060*b444d0e9SMax Reitz return; 1061797ac58cSKevin Wolf } 1062797ac58cSKevin Wolf 10631bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 10641bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1065797ac58cSKevin Wolf count); 1066*b444d0e9SMax Reitz return; 1067797ac58cSKevin Wolf } 1068797ac58cSKevin Wolf } 1069797ac58cSKevin Wolf 1070797ac58cSKevin Wolf if (!zflag) { 10714c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1072797ac58cSKevin Wolf } 1073797ac58cSKevin Wolf 1074797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10757b3f9712SEric Blake if (bflag) { 10764c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1077797ac58cSKevin Wolf } else if (zflag) { 1078d004bd52SEric Blake cnt = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1079797ac58cSKevin Wolf } else if (cflag) { 10804c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1081797ac58cSKevin Wolf } else { 1082770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1083797ac58cSKevin Wolf } 1084797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1085797ac58cSKevin Wolf 1086797ac58cSKevin Wolf if (cnt < 0) { 1087797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1088797ac58cSKevin Wolf goto out; 1089797ac58cSKevin Wolf } 1090797ac58cSKevin Wolf 1091797ac58cSKevin Wolf if (qflag) { 1092797ac58cSKevin Wolf goto out; 1093797ac58cSKevin Wolf } 1094797ac58cSKevin Wolf 1095797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1096797ac58cSKevin Wolf t2 = tsub(t2, t1); 1097797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1098797ac58cSKevin Wolf 1099797ac58cSKevin Wolf out: 1100797ac58cSKevin Wolf if (!zflag) { 1101797ac58cSKevin Wolf qemu_io_free(buf); 1102797ac58cSKevin Wolf } 1103797ac58cSKevin Wolf } 1104797ac58cSKevin Wolf 1105797ac58cSKevin Wolf static void 1106797ac58cSKevin Wolf writev_help(void) 1107797ac58cSKevin Wolf { 1108797ac58cSKevin Wolf printf( 1109797ac58cSKevin Wolf "\n" 1110797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1111797ac58cSKevin Wolf "\n" 1112797ac58cSKevin Wolf " Example:\n" 11136e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1114797ac58cSKevin Wolf "\n" 1115797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1116797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1117797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1118797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1119770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1120797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1121797ac58cSKevin Wolf "\n"); 1122797ac58cSKevin Wolf } 1123797ac58cSKevin Wolf 1124*b444d0e9SMax Reitz static void writev_f(BlockBackend *blk, int argc, char **argv); 1125797ac58cSKevin Wolf 1126797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1127797ac58cSKevin Wolf .name = "writev", 1128797ac58cSKevin Wolf .cfunc = writev_f, 1129887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1130797ac58cSKevin Wolf .argmin = 2, 1131797ac58cSKevin Wolf .argmax = -1, 1132770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1133797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1134797ac58cSKevin Wolf .help = writev_help, 1135797ac58cSKevin Wolf }; 1136797ac58cSKevin Wolf 1137*b444d0e9SMax Reitz static void writev_f(BlockBackend *blk, int argc, char **argv) 1138797ac58cSKevin Wolf { 1139797ac58cSKevin Wolf struct timeval t1, t2; 1140dc38852aSEric Blake bool Cflag = false, qflag = false; 1141770e0e0eSEric Blake int flags = 0; 1142797ac58cSKevin Wolf int c, cnt; 1143797ac58cSKevin Wolf char *buf; 1144797ac58cSKevin Wolf int64_t offset; 1145797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1146797ac58cSKevin Wolf int total = 0; 1147797ac58cSKevin Wolf int nr_iov; 1148797ac58cSKevin Wolf int pattern = 0xcd; 1149797ac58cSKevin Wolf QEMUIOVector qiov; 1150797ac58cSKevin Wolf 11514ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1152797ac58cSKevin Wolf switch (c) { 1153797ac58cSKevin Wolf case 'C': 1154dc38852aSEric Blake Cflag = true; 1155797ac58cSKevin Wolf break; 1156770e0e0eSEric Blake case 'f': 1157770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1158770e0e0eSEric Blake break; 1159797ac58cSKevin Wolf case 'q': 1160dc38852aSEric Blake qflag = true; 1161797ac58cSKevin Wolf break; 1162797ac58cSKevin Wolf case 'P': 1163797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1164797ac58cSKevin Wolf if (pattern < 0) { 1165*b444d0e9SMax Reitz return; 1166797ac58cSKevin Wolf } 1167797ac58cSKevin Wolf break; 1168797ac58cSKevin Wolf default: 1169*b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1170*b444d0e9SMax Reitz return; 1171797ac58cSKevin Wolf } 1172797ac58cSKevin Wolf } 1173797ac58cSKevin Wolf 1174797ac58cSKevin Wolf if (optind > argc - 2) { 1175*b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1176*b444d0e9SMax Reitz return; 1177797ac58cSKevin Wolf } 1178797ac58cSKevin Wolf 1179797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1180797ac58cSKevin Wolf if (offset < 0) { 1181a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1182*b444d0e9SMax Reitz return; 1183797ac58cSKevin Wolf } 1184797ac58cSKevin Wolf optind++; 1185797ac58cSKevin Wolf 1186797ac58cSKevin Wolf nr_iov = argc - optind; 11874c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1188797ac58cSKevin Wolf if (buf == NULL) { 1189*b444d0e9SMax Reitz return; 1190797ac58cSKevin Wolf } 1191797ac58cSKevin Wolf 1192797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1193770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1194797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1195797ac58cSKevin Wolf 1196797ac58cSKevin Wolf if (cnt < 0) { 1197797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1198797ac58cSKevin Wolf goto out; 1199797ac58cSKevin Wolf } 1200797ac58cSKevin Wolf 1201797ac58cSKevin Wolf if (qflag) { 1202797ac58cSKevin Wolf goto out; 1203797ac58cSKevin Wolf } 1204797ac58cSKevin Wolf 1205797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1206797ac58cSKevin Wolf t2 = tsub(t2, t1); 1207797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1208797ac58cSKevin Wolf out: 1209797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1210797ac58cSKevin Wolf qemu_io_free(buf); 1211797ac58cSKevin Wolf } 1212797ac58cSKevin Wolf 1213797ac58cSKevin Wolf struct aio_ctx { 12144c7b7e9bSMax Reitz BlockBackend *blk; 1215797ac58cSKevin Wolf QEMUIOVector qiov; 1216797ac58cSKevin Wolf int64_t offset; 1217797ac58cSKevin Wolf char *buf; 1218dc38852aSEric Blake bool qflag; 1219dc38852aSEric Blake bool vflag; 1220dc38852aSEric Blake bool Cflag; 1221dc38852aSEric Blake bool Pflag; 1222dc38852aSEric Blake bool zflag; 1223a91f9584SFam Zheng BlockAcctCookie acct; 1224797ac58cSKevin Wolf int pattern; 1225797ac58cSKevin Wolf struct timeval t1; 1226797ac58cSKevin Wolf }; 1227797ac58cSKevin Wolf 1228797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1229797ac58cSKevin Wolf { 1230797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1231797ac58cSKevin Wolf struct timeval t2; 1232797ac58cSKevin Wolf 1233797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1234797ac58cSKevin Wolf 1235797ac58cSKevin Wolf 1236797ac58cSKevin Wolf if (ret < 0) { 1237797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1238556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1239797ac58cSKevin Wolf goto out; 1240797ac58cSKevin Wolf } 1241797ac58cSKevin Wolf 12424c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1243a91f9584SFam Zheng 1244797ac58cSKevin Wolf if (ctx->qflag) { 1245797ac58cSKevin Wolf goto out; 1246797ac58cSKevin Wolf } 1247797ac58cSKevin Wolf 1248797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1249797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1250797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1251797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1252797ac58cSKevin Wolf out: 12535ceb7765SKevin Wolf if (!ctx->zflag) { 1254797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1255797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12565ceb7765SKevin Wolf } 1257797ac58cSKevin Wolf g_free(ctx); 1258797ac58cSKevin Wolf } 1259797ac58cSKevin Wolf 1260797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1261797ac58cSKevin Wolf { 1262797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1263797ac58cSKevin Wolf struct timeval t2; 1264797ac58cSKevin Wolf 1265797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1266797ac58cSKevin Wolf 1267797ac58cSKevin Wolf if (ret < 0) { 1268797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1269556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1270797ac58cSKevin Wolf goto out; 1271797ac58cSKevin Wolf } 1272797ac58cSKevin Wolf 1273797ac58cSKevin Wolf if (ctx->Pflag) { 1274797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1275797ac58cSKevin Wolf 1276797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1277797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1278797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1279797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1280797ac58cSKevin Wolf } 1281797ac58cSKevin Wolf g_free(cmp_buf); 1282797ac58cSKevin Wolf } 1283797ac58cSKevin Wolf 12844c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1285a91f9584SFam Zheng 1286797ac58cSKevin Wolf if (ctx->qflag) { 1287797ac58cSKevin Wolf goto out; 1288797ac58cSKevin Wolf } 1289797ac58cSKevin Wolf 1290797ac58cSKevin Wolf if (ctx->vflag) { 1291797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1292797ac58cSKevin Wolf } 1293797ac58cSKevin Wolf 1294797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1295797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1296797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1297797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1298797ac58cSKevin Wolf out: 1299797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1300797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1301797ac58cSKevin Wolf g_free(ctx); 1302797ac58cSKevin Wolf } 1303797ac58cSKevin Wolf 1304797ac58cSKevin Wolf static void aio_read_help(void) 1305797ac58cSKevin Wolf { 1306797ac58cSKevin Wolf printf( 1307797ac58cSKevin Wolf "\n" 1308797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1309797ac58cSKevin Wolf "\n" 1310797ac58cSKevin Wolf " Example:\n" 1311797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1312797ac58cSKevin Wolf "\n" 1313797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1314797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1315797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1316797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1317797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1318797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 131937546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1320797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1321797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1322797ac58cSKevin Wolf "\n"); 1323797ac58cSKevin Wolf } 1324797ac58cSKevin Wolf 1325*b444d0e9SMax Reitz static void aio_read_f(BlockBackend *blk, int argc, char **argv); 1326797ac58cSKevin Wolf 1327797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1328797ac58cSKevin Wolf .name = "aio_read", 1329797ac58cSKevin Wolf .cfunc = aio_read_f, 1330797ac58cSKevin Wolf .argmin = 2, 1331797ac58cSKevin Wolf .argmax = -1, 133237546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1333797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1334797ac58cSKevin Wolf .help = aio_read_help, 1335797ac58cSKevin Wolf }; 1336797ac58cSKevin Wolf 1337*b444d0e9SMax Reitz static void aio_read_f(BlockBackend *blk, int argc, char **argv) 1338797ac58cSKevin Wolf { 1339797ac58cSKevin Wolf int nr_iov, c; 1340797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1341797ac58cSKevin Wolf 13424c7b7e9bSMax Reitz ctx->blk = blk; 134337546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1344797ac58cSKevin Wolf switch (c) { 1345797ac58cSKevin Wolf case 'C': 1346dc38852aSEric Blake ctx->Cflag = true; 1347797ac58cSKevin Wolf break; 1348797ac58cSKevin Wolf case 'P': 1349dc38852aSEric Blake ctx->Pflag = true; 1350797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1351797ac58cSKevin Wolf if (ctx->pattern < 0) { 1352797ac58cSKevin Wolf g_free(ctx); 1353*b444d0e9SMax Reitz return; 1354797ac58cSKevin Wolf } 1355797ac58cSKevin Wolf break; 135637546ff2SEric Blake case 'i': 135737546ff2SEric Blake printf("injecting invalid read request\n"); 135837546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 135937546ff2SEric Blake g_free(ctx); 1360*b444d0e9SMax Reitz return; 1361797ac58cSKevin Wolf case 'q': 1362dc38852aSEric Blake ctx->qflag = true; 1363797ac58cSKevin Wolf break; 1364797ac58cSKevin Wolf case 'v': 1365dc38852aSEric Blake ctx->vflag = true; 1366797ac58cSKevin Wolf break; 1367797ac58cSKevin Wolf default: 1368797ac58cSKevin Wolf g_free(ctx); 1369*b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1370*b444d0e9SMax Reitz return; 1371797ac58cSKevin Wolf } 1372797ac58cSKevin Wolf } 1373797ac58cSKevin Wolf 1374797ac58cSKevin Wolf if (optind > argc - 2) { 1375797ac58cSKevin Wolf g_free(ctx); 1376*b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1377*b444d0e9SMax Reitz return; 1378797ac58cSKevin Wolf } 1379797ac58cSKevin Wolf 1380797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1381797ac58cSKevin Wolf if (ctx->offset < 0) { 1382a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1383797ac58cSKevin Wolf g_free(ctx); 1384*b444d0e9SMax Reitz return; 1385797ac58cSKevin Wolf } 1386797ac58cSKevin Wolf optind++; 1387797ac58cSKevin Wolf 1388797ac58cSKevin Wolf nr_iov = argc - optind; 13894c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1390797ac58cSKevin Wolf if (ctx->buf == NULL) { 1391556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1392797ac58cSKevin Wolf g_free(ctx); 1393*b444d0e9SMax Reitz return; 1394797ac58cSKevin Wolf } 1395797ac58cSKevin Wolf 1396797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 13974c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 13984c7b7e9bSMax Reitz BLOCK_ACCT_READ); 13997b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1400797ac58cSKevin Wolf } 1401797ac58cSKevin Wolf 1402797ac58cSKevin Wolf static void aio_write_help(void) 1403797ac58cSKevin Wolf { 1404797ac58cSKevin Wolf printf( 1405797ac58cSKevin Wolf "\n" 1406797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1407797ac58cSKevin Wolf " from multiple buffers\n" 1408797ac58cSKevin Wolf "\n" 1409797ac58cSKevin Wolf " Example:\n" 1410797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1411797ac58cSKevin Wolf "\n" 1412797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1413797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1414797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1415797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1416797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1417797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1418770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 141937546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1420797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1421c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1422d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1423797ac58cSKevin Wolf "\n"); 1424797ac58cSKevin Wolf } 1425797ac58cSKevin Wolf 1426*b444d0e9SMax Reitz static void aio_write_f(BlockBackend *blk, int argc, char **argv); 1427797ac58cSKevin Wolf 1428797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1429797ac58cSKevin Wolf .name = "aio_write", 1430797ac58cSKevin Wolf .cfunc = aio_write_f, 1431887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1432797ac58cSKevin Wolf .argmin = 2, 1433797ac58cSKevin Wolf .argmax = -1, 143437546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1435797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1436797ac58cSKevin Wolf .help = aio_write_help, 1437797ac58cSKevin Wolf }; 1438797ac58cSKevin Wolf 1439*b444d0e9SMax Reitz static void aio_write_f(BlockBackend *blk, int argc, char **argv) 1440797ac58cSKevin Wolf { 1441797ac58cSKevin Wolf int nr_iov, c; 1442797ac58cSKevin Wolf int pattern = 0xcd; 1443797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1444770e0e0eSEric Blake int flags = 0; 1445797ac58cSKevin Wolf 14464c7b7e9bSMax Reitz ctx->blk = blk; 144737546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1448797ac58cSKevin Wolf switch (c) { 1449797ac58cSKevin Wolf case 'C': 1450dc38852aSEric Blake ctx->Cflag = true; 1451797ac58cSKevin Wolf break; 1452770e0e0eSEric Blake case 'f': 1453770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1454770e0e0eSEric Blake break; 1455797ac58cSKevin Wolf case 'q': 1456dc38852aSEric Blake ctx->qflag = true; 1457797ac58cSKevin Wolf break; 1458c2e001ccSEric Blake case 'u': 1459c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1460c2e001ccSEric Blake break; 1461797ac58cSKevin Wolf case 'P': 1462797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1463797ac58cSKevin Wolf if (pattern < 0) { 1464797ac58cSKevin Wolf g_free(ctx); 1465*b444d0e9SMax Reitz return; 1466797ac58cSKevin Wolf } 1467797ac58cSKevin Wolf break; 146837546ff2SEric Blake case 'i': 146937546ff2SEric Blake printf("injecting invalid write request\n"); 147037546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 147137546ff2SEric Blake g_free(ctx); 1472*b444d0e9SMax Reitz return; 14735ceb7765SKevin Wolf case 'z': 1474dc38852aSEric Blake ctx->zflag = true; 14755ceb7765SKevin Wolf break; 1476797ac58cSKevin Wolf default: 1477797ac58cSKevin Wolf g_free(ctx); 1478*b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1479*b444d0e9SMax Reitz return; 1480797ac58cSKevin Wolf } 1481797ac58cSKevin Wolf } 1482797ac58cSKevin Wolf 1483797ac58cSKevin Wolf if (optind > argc - 2) { 1484797ac58cSKevin Wolf g_free(ctx); 1485*b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1486*b444d0e9SMax Reitz return; 1487797ac58cSKevin Wolf } 1488797ac58cSKevin Wolf 14895ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 14905ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 14915ceb7765SKevin Wolf g_free(ctx); 1492*b444d0e9SMax Reitz return; 14935ceb7765SKevin Wolf } 14945ceb7765SKevin Wolf 1495c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1496c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 14974ca1d340SEric Blake g_free(ctx); 1498*b444d0e9SMax Reitz return; 1499c2e001ccSEric Blake } 1500c2e001ccSEric Blake 15015ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 15025ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 15035ceb7765SKevin Wolf g_free(ctx); 1504*b444d0e9SMax Reitz return; 15055ceb7765SKevin Wolf } 15065ceb7765SKevin Wolf 1507797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1508797ac58cSKevin Wolf if (ctx->offset < 0) { 1509a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1510797ac58cSKevin Wolf g_free(ctx); 1511*b444d0e9SMax Reitz return; 1512797ac58cSKevin Wolf } 1513797ac58cSKevin Wolf optind++; 1514797ac58cSKevin Wolf 15155ceb7765SKevin Wolf if (ctx->zflag) { 15165ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 15175ceb7765SKevin Wolf if (count < 0) { 15185ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 15190e01b76eSKevin Wolf g_free(ctx); 1520*b444d0e9SMax Reitz return; 15215ceb7765SKevin Wolf } 15225ceb7765SKevin Wolf 15235ceb7765SKevin Wolf ctx->qiov.size = count; 1524d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1525770e0e0eSEric Blake ctx); 15265ceb7765SKevin Wolf } else { 1527797ac58cSKevin Wolf nr_iov = argc - optind; 15285ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 15295ceb7765SKevin Wolf pattern); 1530797ac58cSKevin Wolf if (ctx->buf == NULL) { 1531556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1532797ac58cSKevin Wolf g_free(ctx); 1533*b444d0e9SMax Reitz return; 1534797ac58cSKevin Wolf } 1535797ac58cSKevin Wolf 1536797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 15374c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15384c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 15395ceb7765SKevin Wolf 1540770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1541770e0e0eSEric Blake ctx); 15425ceb7765SKevin Wolf } 1543797ac58cSKevin Wolf } 1544797ac58cSKevin Wolf 1545*b444d0e9SMax Reitz static void aio_flush_f(BlockBackend *blk, int argc, char **argv) 1546797ac58cSKevin Wolf { 1547556c2b60SAlberto Garcia BlockAcctCookie cookie; 1548556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15494c7b7e9bSMax Reitz blk_drain_all(); 1550556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1551797ac58cSKevin Wolf } 1552797ac58cSKevin Wolf 1553797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1554797ac58cSKevin Wolf .name = "aio_flush", 1555797ac58cSKevin Wolf .cfunc = aio_flush_f, 1556797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1557797ac58cSKevin Wolf }; 1558797ac58cSKevin Wolf 1559*b444d0e9SMax Reitz static void flush_f(BlockBackend *blk, int argc, char **argv) 1560797ac58cSKevin Wolf { 15614c7b7e9bSMax Reitz blk_flush(blk); 1562797ac58cSKevin Wolf } 1563797ac58cSKevin Wolf 1564797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1565797ac58cSKevin Wolf .name = "flush", 1566797ac58cSKevin Wolf .altname = "f", 1567797ac58cSKevin Wolf .cfunc = flush_f, 1568797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1569797ac58cSKevin Wolf }; 1570797ac58cSKevin Wolf 1571*b444d0e9SMax Reitz static void truncate_f(BlockBackend *blk, int argc, char **argv) 1572797ac58cSKevin Wolf { 1573ed3d2ec9SMax Reitz Error *local_err = NULL; 1574797ac58cSKevin Wolf int64_t offset; 1575797ac58cSKevin Wolf int ret; 1576797ac58cSKevin Wolf 1577797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1578797ac58cSKevin Wolf if (offset < 0) { 1579a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1580*b444d0e9SMax Reitz return; 1581797ac58cSKevin Wolf } 1582797ac58cSKevin Wolf 15833a691c50SMax Reitz ret = blk_truncate(blk, offset, PREALLOC_MODE_OFF, &local_err); 1584797ac58cSKevin Wolf if (ret < 0) { 1585ed3d2ec9SMax Reitz error_report_err(local_err); 1586*b444d0e9SMax Reitz return; 1587797ac58cSKevin Wolf } 1588797ac58cSKevin Wolf } 1589797ac58cSKevin Wolf 1590797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1591797ac58cSKevin Wolf .name = "truncate", 1592797ac58cSKevin Wolf .altname = "t", 1593797ac58cSKevin Wolf .cfunc = truncate_f, 1594887354bdSKevin Wolf .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 1595797ac58cSKevin Wolf .argmin = 1, 1596797ac58cSKevin Wolf .argmax = 1, 1597797ac58cSKevin Wolf .args = "off", 1598797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1599797ac58cSKevin Wolf }; 1600797ac58cSKevin Wolf 1601*b444d0e9SMax Reitz static void length_f(BlockBackend *blk, int argc, char **argv) 1602797ac58cSKevin Wolf { 1603797ac58cSKevin Wolf int64_t size; 1604797ac58cSKevin Wolf char s1[64]; 1605797ac58cSKevin Wolf 16064c7b7e9bSMax Reitz size = blk_getlength(blk); 1607797ac58cSKevin Wolf if (size < 0) { 1608797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1609*b444d0e9SMax Reitz return; 1610797ac58cSKevin Wolf } 1611797ac58cSKevin Wolf 1612797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1613797ac58cSKevin Wolf printf("%s\n", s1); 1614797ac58cSKevin Wolf } 1615797ac58cSKevin Wolf 1616797ac58cSKevin Wolf 1617797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1618797ac58cSKevin Wolf .name = "length", 1619797ac58cSKevin Wolf .altname = "l", 1620797ac58cSKevin Wolf .cfunc = length_f, 1621797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1622797ac58cSKevin Wolf }; 1623797ac58cSKevin Wolf 1624797ac58cSKevin Wolf 1625*b444d0e9SMax Reitz static void info_f(BlockBackend *blk, int argc, char **argv) 1626797ac58cSKevin Wolf { 16274c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1628797ac58cSKevin Wolf BlockDriverInfo bdi; 1629a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1630797ac58cSKevin Wolf char s1[64], s2[64]; 1631797ac58cSKevin Wolf int ret; 1632797ac58cSKevin Wolf 1633797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1634797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1635797ac58cSKevin Wolf } 1636797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1637797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1638797ac58cSKevin Wolf } 1639797ac58cSKevin Wolf 1640797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1641797ac58cSKevin Wolf if (ret) { 1642*b444d0e9SMax Reitz return; 1643797ac58cSKevin Wolf } 1644797ac58cSKevin Wolf 1645797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1646797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1647797ac58cSKevin Wolf 1648797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1649797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1650797ac58cSKevin Wolf 1651a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1652a8d8ecb7SMax Reitz if (spec_info) { 1653a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1654a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1655a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1656a8d8ecb7SMax Reitz } 1657797ac58cSKevin Wolf } 1658797ac58cSKevin Wolf 1659797ac58cSKevin Wolf 1660797ac58cSKevin Wolf 1661797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1662797ac58cSKevin Wolf .name = "info", 1663797ac58cSKevin Wolf .altname = "i", 1664797ac58cSKevin Wolf .cfunc = info_f, 1665797ac58cSKevin Wolf .oneline = "prints information about the current file", 1666797ac58cSKevin Wolf }; 1667797ac58cSKevin Wolf 1668797ac58cSKevin Wolf static void discard_help(void) 1669797ac58cSKevin Wolf { 1670797ac58cSKevin Wolf printf( 1671797ac58cSKevin Wolf "\n" 1672797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1673797ac58cSKevin Wolf "\n" 1674797ac58cSKevin Wolf " Example:\n" 1675797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1676797ac58cSKevin Wolf "\n" 1677797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1678797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1679797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1680797ac58cSKevin Wolf "\n"); 1681797ac58cSKevin Wolf } 1682797ac58cSKevin Wolf 1683*b444d0e9SMax Reitz static void discard_f(BlockBackend *blk, int argc, char **argv); 1684797ac58cSKevin Wolf 1685797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1686797ac58cSKevin Wolf .name = "discard", 1687797ac58cSKevin Wolf .altname = "d", 1688797ac58cSKevin Wolf .cfunc = discard_f, 1689887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1690797ac58cSKevin Wolf .argmin = 2, 1691797ac58cSKevin Wolf .argmax = -1, 1692797ac58cSKevin Wolf .args = "[-Cq] off len", 1693797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1694797ac58cSKevin Wolf .help = discard_help, 1695797ac58cSKevin Wolf }; 1696797ac58cSKevin Wolf 1697*b444d0e9SMax Reitz static void discard_f(BlockBackend *blk, int argc, char **argv) 1698797ac58cSKevin Wolf { 1699797ac58cSKevin Wolf struct timeval t1, t2; 1700dc38852aSEric Blake bool Cflag = false, qflag = false; 1701797ac58cSKevin Wolf int c, ret; 1702f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1703797ac58cSKevin Wolf 1704b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1705797ac58cSKevin Wolf switch (c) { 1706797ac58cSKevin Wolf case 'C': 1707dc38852aSEric Blake Cflag = true; 1708797ac58cSKevin Wolf break; 1709797ac58cSKevin Wolf case 'q': 1710dc38852aSEric Blake qflag = true; 1711797ac58cSKevin Wolf break; 1712797ac58cSKevin Wolf default: 1713*b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1714*b444d0e9SMax Reitz return; 1715797ac58cSKevin Wolf } 1716797ac58cSKevin Wolf } 1717797ac58cSKevin Wolf 1718797ac58cSKevin Wolf if (optind != argc - 2) { 1719*b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1720*b444d0e9SMax Reitz return; 1721797ac58cSKevin Wolf } 1722797ac58cSKevin Wolf 1723797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1724797ac58cSKevin Wolf if (offset < 0) { 1725a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1726*b444d0e9SMax Reitz return; 1727797ac58cSKevin Wolf } 1728797ac58cSKevin Wolf 1729797ac58cSKevin Wolf optind++; 1730f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1731f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1732f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1733*b444d0e9SMax Reitz return; 1734f5a5ca79SManos Pitsidianakis } else if (bytes >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) { 17359b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 1736a3674679SMax Reitz (uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS, 17379b0beaf3SJohn Snow argv[optind]); 1738*b444d0e9SMax Reitz return; 1739797ac58cSKevin Wolf } 1740797ac58cSKevin Wolf 1741797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1742f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 1743797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1744797ac58cSKevin Wolf 1745797ac58cSKevin Wolf if (ret < 0) { 1746797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1747*b444d0e9SMax Reitz return; 1748797ac58cSKevin Wolf } 1749797ac58cSKevin Wolf 1750797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1751797ac58cSKevin Wolf if (!qflag) { 1752797ac58cSKevin Wolf t2 = tsub(t2, t1); 1753f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1754797ac58cSKevin Wolf } 1755797ac58cSKevin Wolf } 1756797ac58cSKevin Wolf 1757*b444d0e9SMax Reitz static void alloc_f(BlockBackend *blk, int argc, char **argv) 1758797ac58cSKevin Wolf { 17594c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1760d6a644bbSEric Blake int64_t offset, start, remaining, count; 1761797ac58cSKevin Wolf char s1[64]; 1762d6a644bbSEric Blake int ret; 1763d6a644bbSEric Blake int64_t num, sum_alloc; 1764797ac58cSKevin Wolf 1765d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1766797ac58cSKevin Wolf if (offset < 0) { 1767a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1768*b444d0e9SMax Reitz return; 1769797ac58cSKevin Wolf } 1770797ac58cSKevin Wolf 1771797ac58cSKevin Wolf if (argc == 3) { 17724401fdc7SEric Blake count = cvtnum(argv[2]); 17734401fdc7SEric Blake if (count < 0) { 17744401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1775*b444d0e9SMax Reitz return; 1776797ac58cSKevin Wolf } 1777797ac58cSKevin Wolf } else { 17784401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1779797ac58cSKevin Wolf } 1780797ac58cSKevin Wolf 1781d6a644bbSEric Blake remaining = count; 1782797ac58cSKevin Wolf sum_alloc = 0; 1783797ac58cSKevin Wolf while (remaining) { 1784d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1785d663640cSPaolo Bonzini if (ret < 0) { 1786d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1787*b444d0e9SMax Reitz return; 1788d663640cSPaolo Bonzini } 1789d6a644bbSEric Blake offset += num; 1790797ac58cSKevin Wolf remaining -= num; 1791797ac58cSKevin Wolf if (ret) { 1792797ac58cSKevin Wolf sum_alloc += num; 1793797ac58cSKevin Wolf } 1794797ac58cSKevin Wolf if (num == 0) { 1795d6a644bbSEric Blake count -= remaining; 1796797ac58cSKevin Wolf remaining = 0; 1797797ac58cSKevin Wolf } 1798797ac58cSKevin Wolf } 1799797ac58cSKevin Wolf 1800d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1801797ac58cSKevin Wolf 18024401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1803d6a644bbSEric Blake sum_alloc, count, s1); 1804797ac58cSKevin Wolf } 1805797ac58cSKevin Wolf 1806797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1807797ac58cSKevin Wolf .name = "alloc", 1808797ac58cSKevin Wolf .altname = "a", 1809797ac58cSKevin Wolf .argmin = 1, 1810797ac58cSKevin Wolf .argmax = 2, 1811797ac58cSKevin Wolf .cfunc = alloc_f, 18124401fdc7SEric Blake .args = "offset [count]", 18134401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1814797ac58cSKevin Wolf }; 1815797ac58cSKevin Wolf 1816797ac58cSKevin Wolf 1817d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1818d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1819797ac58cSKevin Wolf { 1820d6a644bbSEric Blake int64_t num; 1821d6a644bbSEric Blake int num_checked; 1822797ac58cSKevin Wolf int ret, firstret; 1823797ac58cSKevin Wolf 1824d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1825d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 1826797ac58cSKevin Wolf if (ret < 0) { 1827797ac58cSKevin Wolf return ret; 1828797ac58cSKevin Wolf } 1829797ac58cSKevin Wolf 1830797ac58cSKevin Wolf firstret = ret; 1831797ac58cSKevin Wolf *pnum = num; 1832797ac58cSKevin Wolf 1833d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1834d6a644bbSEric Blake offset += num; 1835d6a644bbSEric Blake bytes -= num; 1836797ac58cSKevin Wolf 1837d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1838d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 18394b25bbc4SMax Reitz if (ret == firstret && num) { 1840797ac58cSKevin Wolf *pnum += num; 1841797ac58cSKevin Wolf } else { 1842797ac58cSKevin Wolf break; 1843797ac58cSKevin Wolf } 1844797ac58cSKevin Wolf } 1845797ac58cSKevin Wolf 1846797ac58cSKevin Wolf return firstret; 1847797ac58cSKevin Wolf } 1848797ac58cSKevin Wolf 1849*b444d0e9SMax Reitz static void map_f(BlockBackend *blk, int argc, char **argv) 1850797ac58cSKevin Wolf { 1851d6a644bbSEric Blake int64_t offset, bytes; 18526f3c90afSEric Blake char s1[64], s2[64]; 1853797ac58cSKevin Wolf int64_t num; 1854797ac58cSKevin Wolf int ret; 1855797ac58cSKevin Wolf const char *retstr; 1856797ac58cSKevin Wolf 1857797ac58cSKevin Wolf offset = 0; 1858d6a644bbSEric Blake bytes = blk_getlength(blk); 1859d6a644bbSEric Blake if (bytes < 0) { 1860d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 1861*b444d0e9SMax Reitz return; 18624c7b7e9bSMax Reitz } 18634c7b7e9bSMax Reitz 1864d6a644bbSEric Blake while (bytes) { 1865d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 1866797ac58cSKevin Wolf if (ret < 0) { 1867797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1868*b444d0e9SMax Reitz return; 18694b25bbc4SMax Reitz } else if (!num) { 18704b25bbc4SMax Reitz error_report("Unexpected end of image"); 1871*b444d0e9SMax Reitz return; 1872797ac58cSKevin Wolf } 1873797ac58cSKevin Wolf 1874797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1875d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 1876d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 18776f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 1878d6a644bbSEric Blake s1, num, retstr, s2, offset); 1879797ac58cSKevin Wolf 1880797ac58cSKevin Wolf offset += num; 1881d6a644bbSEric Blake bytes -= num; 1882d6a644bbSEric Blake } 1883797ac58cSKevin Wolf } 1884797ac58cSKevin Wolf 1885797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1886797ac58cSKevin Wolf .name = "map", 1887797ac58cSKevin Wolf .argmin = 0, 1888797ac58cSKevin Wolf .argmax = 0, 1889797ac58cSKevin Wolf .cfunc = map_f, 1890797ac58cSKevin Wolf .args = "", 1891797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1892797ac58cSKevin Wolf }; 1893797ac58cSKevin Wolf 18945bbd2e59SKevin Wolf static void reopen_help(void) 18955bbd2e59SKevin Wolf { 18965bbd2e59SKevin Wolf printf( 18975bbd2e59SKevin Wolf "\n" 18985bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 18995bbd2e59SKevin Wolf "\n" 19005bbd2e59SKevin Wolf " Example:\n" 19015bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 19025bbd2e59SKevin Wolf "\n" 19035bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 1904ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 19055bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 19065bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 19075bbd2e59SKevin Wolf "\n"); 19085bbd2e59SKevin Wolf } 19095bbd2e59SKevin Wolf 1910*b444d0e9SMax Reitz static void reopen_f(BlockBackend *blk, int argc, char **argv); 19115bbd2e59SKevin Wolf 19125bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 19135bbd2e59SKevin Wolf .name = "reopen", 19145bbd2e59SKevin Wolf .merge_lists = true, 19155bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 19165bbd2e59SKevin Wolf .desc = { 19175bbd2e59SKevin Wolf /* no elements => accept any params */ 19185bbd2e59SKevin Wolf { /* end of list */ } 19195bbd2e59SKevin Wolf }, 19205bbd2e59SKevin Wolf }; 19215bbd2e59SKevin Wolf 19225bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19235bbd2e59SKevin Wolf .name = "reopen", 19245bbd2e59SKevin Wolf .argmin = 0, 19255bbd2e59SKevin Wolf .argmax = -1, 19265bbd2e59SKevin Wolf .cfunc = reopen_f, 1927ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 19285bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19295bbd2e59SKevin Wolf .help = reopen_help, 19305bbd2e59SKevin Wolf }; 19315bbd2e59SKevin Wolf 1932*b444d0e9SMax Reitz static void reopen_f(BlockBackend *blk, int argc, char **argv) 19335bbd2e59SKevin Wolf { 19345bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19355bbd2e59SKevin Wolf QemuOpts *qopts; 19365bbd2e59SKevin Wolf QDict *opts; 19375bbd2e59SKevin Wolf int c; 19385bbd2e59SKevin Wolf int flags = bs->open_flags; 193919dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 1940ea92203cSKevin Wolf bool has_rw_option = false; 19415bbd2e59SKevin Wolf 19425bbd2e59SKevin Wolf BlockReopenQueue *brq; 19435bbd2e59SKevin Wolf Error *local_err = NULL; 19445bbd2e59SKevin Wolf 1945ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 19465bbd2e59SKevin Wolf switch (c) { 19475bbd2e59SKevin Wolf case 'c': 194819dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 19495bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 1950*b444d0e9SMax Reitz return; 19515bbd2e59SKevin Wolf } 19525bbd2e59SKevin Wolf break; 19535bbd2e59SKevin Wolf case 'o': 19545bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 19555bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 1956*b444d0e9SMax Reitz return; 19575bbd2e59SKevin Wolf } 19585bbd2e59SKevin Wolf break; 19595bbd2e59SKevin Wolf case 'r': 1960ea92203cSKevin Wolf if (has_rw_option) { 1961ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 1962*b444d0e9SMax Reitz return; 1963ea92203cSKevin Wolf } 19645bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 1965ea92203cSKevin Wolf has_rw_option = true; 1966ea92203cSKevin Wolf break; 1967ea92203cSKevin Wolf case 'w': 1968ea92203cSKevin Wolf if (has_rw_option) { 1969ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 1970*b444d0e9SMax Reitz return; 1971ea92203cSKevin Wolf } 1972ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 1973ea92203cSKevin Wolf has_rw_option = true; 19745bbd2e59SKevin Wolf break; 19755bbd2e59SKevin Wolf default: 19765bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 1977*b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 1978*b444d0e9SMax Reitz return; 19795bbd2e59SKevin Wolf } 19805bbd2e59SKevin Wolf } 19815bbd2e59SKevin Wolf 19825bbd2e59SKevin Wolf if (optind != argc) { 19835bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 1984*b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 1985*b444d0e9SMax Reitz return; 19865bbd2e59SKevin Wolf } 19875bbd2e59SKevin Wolf 198819dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 198919dbecdcSKevin Wolf blk_get_attached_dev(blk)) 199019dbecdcSKevin Wolf { 199119dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 199219dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 1993*b444d0e9SMax Reitz return; 199419dbecdcSKevin Wolf } 199519dbecdcSKevin Wolf 1996f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 1997f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 1998f3adefb2SKevin Wolf 1999f3adefb2SKevin Wolf bdrv_drain(bs); 2000f3adefb2SKevin Wolf 2001f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2002f3adefb2SKevin Wolf blk_set_perm(blk, 2003f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2004f3adefb2SKevin Wolf orig_shared_perm, 2005f3adefb2SKevin Wolf &error_abort); 2006f3adefb2SKevin Wolf } 2007f3adefb2SKevin Wolf 20085bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 20095bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 20105bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 20115bbd2e59SKevin Wolf 20121a63a907SKevin Wolf bdrv_subtree_drained_begin(bs); 20135bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 2014720150f3SPaolo Bonzini bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err); 20151a63a907SKevin Wolf bdrv_subtree_drained_end(bs); 20161a63a907SKevin Wolf 20175bbd2e59SKevin Wolf if (local_err) { 20185bbd2e59SKevin Wolf error_report_err(local_err); 201919dbecdcSKevin Wolf } else { 202019dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 20215bbd2e59SKevin Wolf } 20225bbd2e59SKevin Wolf } 20235bbd2e59SKevin Wolf 2024*b444d0e9SMax Reitz static void break_f(BlockBackend *blk, int argc, char **argv) 2025797ac58cSKevin Wolf { 2026797ac58cSKevin Wolf int ret; 2027797ac58cSKevin Wolf 20284c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2029797ac58cSKevin Wolf if (ret < 0) { 2030797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2031797ac58cSKevin Wolf } 2032797ac58cSKevin Wolf } 2033797ac58cSKevin Wolf 2034*b444d0e9SMax Reitz static void remove_break_f(BlockBackend *blk, int argc, char **argv) 20354cc70e93SFam Zheng { 20364cc70e93SFam Zheng int ret; 20374cc70e93SFam Zheng 20384c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 20394cc70e93SFam Zheng if (ret < 0) { 20404cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 20414cc70e93SFam Zheng } 20424cc70e93SFam Zheng } 20434cc70e93SFam Zheng 2044797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2045797ac58cSKevin Wolf .name = "break", 2046797ac58cSKevin Wolf .argmin = 2, 2047797ac58cSKevin Wolf .argmax = 2, 2048797ac58cSKevin Wolf .cfunc = break_f, 2049797ac58cSKevin Wolf .args = "event tag", 2050797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2051797ac58cSKevin Wolf "request as tag", 2052797ac58cSKevin Wolf }; 2053797ac58cSKevin Wolf 20544cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 20554cc70e93SFam Zheng .name = "remove_break", 20564cc70e93SFam Zheng .argmin = 1, 20574cc70e93SFam Zheng .argmax = 1, 20584cc70e93SFam Zheng .cfunc = remove_break_f, 20594cc70e93SFam Zheng .args = "tag", 20604cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 20614cc70e93SFam Zheng }; 20624cc70e93SFam Zheng 2063*b444d0e9SMax Reitz static void resume_f(BlockBackend *blk, int argc, char **argv) 2064797ac58cSKevin Wolf { 2065797ac58cSKevin Wolf int ret; 2066797ac58cSKevin Wolf 20674c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2068797ac58cSKevin Wolf if (ret < 0) { 2069797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2070797ac58cSKevin Wolf } 2071797ac58cSKevin Wolf } 2072797ac58cSKevin Wolf 2073797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2074797ac58cSKevin Wolf .name = "resume", 2075797ac58cSKevin Wolf .argmin = 1, 2076797ac58cSKevin Wolf .argmax = 1, 2077797ac58cSKevin Wolf .cfunc = resume_f, 2078797ac58cSKevin Wolf .args = "tag", 2079797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2080797ac58cSKevin Wolf }; 2081797ac58cSKevin Wolf 2082*b444d0e9SMax Reitz static void wait_break_f(BlockBackend *blk, int argc, char **argv) 2083797ac58cSKevin Wolf { 20844c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 20854c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2086797ac58cSKevin Wolf } 2087797ac58cSKevin Wolf } 2088797ac58cSKevin Wolf 2089797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2090797ac58cSKevin Wolf .name = "wait_break", 2091797ac58cSKevin Wolf .argmin = 1, 2092797ac58cSKevin Wolf .argmax = 1, 2093797ac58cSKevin Wolf .cfunc = wait_break_f, 2094797ac58cSKevin Wolf .args = "tag", 2095797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2096797ac58cSKevin Wolf }; 2097797ac58cSKevin Wolf 2098*b444d0e9SMax Reitz static void abort_f(BlockBackend *blk, int argc, char **argv) 2099797ac58cSKevin Wolf { 2100797ac58cSKevin Wolf abort(); 2101797ac58cSKevin Wolf } 2102797ac58cSKevin Wolf 2103797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2104797ac58cSKevin Wolf .name = "abort", 2105797ac58cSKevin Wolf .cfunc = abort_f, 2106797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2107797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2108797ac58cSKevin Wolf }; 2109797ac58cSKevin Wolf 21100e82dc7bSMax Reitz static void sigraise_help(void) 21110e82dc7bSMax Reitz { 21120e82dc7bSMax Reitz printf( 21130e82dc7bSMax Reitz "\n" 21140e82dc7bSMax Reitz " raises the given signal\n" 21150e82dc7bSMax Reitz "\n" 21160e82dc7bSMax Reitz " Example:\n" 21170e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 21180e82dc7bSMax Reitz "\n" 21190e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 21200e82dc7bSMax Reitz " given to sigraise.\n" 21210e82dc7bSMax Reitz "\n", SIGTERM); 21220e82dc7bSMax Reitz } 21230e82dc7bSMax Reitz 2124*b444d0e9SMax Reitz static void sigraise_f(BlockBackend *blk, int argc, char **argv); 21250e82dc7bSMax Reitz 21260e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 21270e82dc7bSMax Reitz .name = "sigraise", 21280e82dc7bSMax Reitz .cfunc = sigraise_f, 21290e82dc7bSMax Reitz .argmin = 1, 21300e82dc7bSMax Reitz .argmax = 1, 21310e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 21320e82dc7bSMax Reitz .args = "signal", 21330e82dc7bSMax Reitz .oneline = "raises a signal", 21340e82dc7bSMax Reitz .help = sigraise_help, 21350e82dc7bSMax Reitz }; 21360e82dc7bSMax Reitz 2137*b444d0e9SMax Reitz static void sigraise_f(BlockBackend *blk, int argc, char **argv) 21380e82dc7bSMax Reitz { 21399b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 21400e82dc7bSMax Reitz if (sig < 0) { 2141a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2142*b444d0e9SMax Reitz return; 21439b0beaf3SJohn Snow } else if (sig > NSIG) { 21449b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 21459b0beaf3SJohn Snow argv[1]); 2146*b444d0e9SMax Reitz return; 21470e82dc7bSMax Reitz } 21480e82dc7bSMax Reitz 21490e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 21500e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 21510e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 21520e82dc7bSMax Reitz fflush(stdout); 21530e82dc7bSMax Reitz fflush(stderr); 21540e82dc7bSMax Reitz 21550e82dc7bSMax Reitz raise(sig); 21560e82dc7bSMax Reitz } 21570e82dc7bSMax Reitz 2158cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2159cd33d02aSKevin Wolf { 2160cd33d02aSKevin Wolf bool *expired = opaque; 2161cd33d02aSKevin Wolf *expired = true; 2162cd33d02aSKevin Wolf } 2163cd33d02aSKevin Wolf 2164*b444d0e9SMax Reitz static void sleep_f(BlockBackend *blk, int argc, char **argv) 2165cd33d02aSKevin Wolf { 2166cd33d02aSKevin Wolf char *endptr; 2167cd33d02aSKevin Wolf long ms; 2168cd33d02aSKevin Wolf struct QEMUTimer *timer; 2169cd33d02aSKevin Wolf bool expired = false; 2170cd33d02aSKevin Wolf 2171cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2172cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2173cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2174*b444d0e9SMax Reitz return; 2175cd33d02aSKevin Wolf } 2176cd33d02aSKevin Wolf 2177cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2178cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2179cd33d02aSKevin Wolf 2180cd33d02aSKevin Wolf while (!expired) { 2181cd33d02aSKevin Wolf main_loop_wait(false); 2182cd33d02aSKevin Wolf } 2183cd33d02aSKevin Wolf 2184cd33d02aSKevin Wolf timer_free(timer); 2185cd33d02aSKevin Wolf } 2186cd33d02aSKevin Wolf 2187cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2188cd33d02aSKevin Wolf .name = "sleep", 2189cd33d02aSKevin Wolf .argmin = 1, 2190cd33d02aSKevin Wolf .argmax = 1, 2191cd33d02aSKevin Wolf .cfunc = sleep_f, 2192cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2193cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2194cd33d02aSKevin Wolf }; 2195cd33d02aSKevin Wolf 2196f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2197f18a834aSKevin Wolf { 2198f18a834aSKevin Wolf if (cmd) { 2199f18a834aSKevin Wolf printf("%s ", cmd); 2200f18a834aSKevin Wolf } else { 2201f18a834aSKevin Wolf printf("%s ", ct->name); 2202f18a834aSKevin Wolf if (ct->altname) { 2203f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2204f18a834aSKevin Wolf } 2205f18a834aSKevin Wolf } 2206f18a834aSKevin Wolf 2207f18a834aSKevin Wolf if (ct->args) { 2208f18a834aSKevin Wolf printf("%s ", ct->args); 2209f18a834aSKevin Wolf } 2210f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2211f18a834aSKevin Wolf } 2212f18a834aSKevin Wolf 2213f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2214f18a834aSKevin Wolf { 2215f18a834aSKevin Wolf help_oneline(cmd, ct); 2216f18a834aSKevin Wolf if (ct->help) { 2217f18a834aSKevin Wolf ct->help(); 2218f18a834aSKevin Wolf } 2219f18a834aSKevin Wolf } 2220f18a834aSKevin Wolf 2221f18a834aSKevin Wolf static void help_all(void) 2222f18a834aSKevin Wolf { 2223f18a834aSKevin Wolf const cmdinfo_t *ct; 2224f18a834aSKevin Wolf 2225f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2226f18a834aSKevin Wolf help_oneline(ct->name, ct); 2227f18a834aSKevin Wolf } 2228f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2229f18a834aSKevin Wolf } 2230f18a834aSKevin Wolf 2231*b444d0e9SMax Reitz static void help_f(BlockBackend *blk, int argc, char **argv) 2232f18a834aSKevin Wolf { 2233f18a834aSKevin Wolf const cmdinfo_t *ct; 2234f18a834aSKevin Wolf 2235f18a834aSKevin Wolf if (argc == 1) { 2236f18a834aSKevin Wolf help_all(); 2237*b444d0e9SMax Reitz return; 2238f18a834aSKevin Wolf } 2239f18a834aSKevin Wolf 2240f18a834aSKevin Wolf ct = find_command(argv[1]); 2241f18a834aSKevin Wolf if (ct == NULL) { 2242f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2243*b444d0e9SMax Reitz return; 2244f18a834aSKevin Wolf } 2245f18a834aSKevin Wolf 2246f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2247f18a834aSKevin Wolf } 2248f18a834aSKevin Wolf 2249f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2250f18a834aSKevin Wolf .name = "help", 2251f18a834aSKevin Wolf .altname = "?", 2252f18a834aSKevin Wolf .cfunc = help_f, 2253f18a834aSKevin Wolf .argmin = 0, 2254f18a834aSKevin Wolf .argmax = 1, 2255f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2256f18a834aSKevin Wolf .args = "[command]", 2257f18a834aSKevin Wolf .oneline = "help for one or all commands", 2258f18a834aSKevin Wolf }; 2259f18a834aSKevin Wolf 2260*b444d0e9SMax Reitz void qemuio_command(BlockBackend *blk, const char *cmd) 2261dd583296SKevin Wolf { 226215afd94aSPaolo Bonzini AioContext *ctx; 2263dd583296SKevin Wolf char *input; 2264dd583296SKevin Wolf const cmdinfo_t *ct; 2265dd583296SKevin Wolf char **v; 2266dd583296SKevin Wolf int c; 2267dd583296SKevin Wolf 2268dd583296SKevin Wolf input = g_strdup(cmd); 2269dd583296SKevin Wolf v = breakline(input, &c); 2270dd583296SKevin Wolf if (c) { 2271dd583296SKevin Wolf ct = find_command(v[0]); 2272dd583296SKevin Wolf if (ct) { 227315afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 227415afd94aSPaolo Bonzini aio_context_acquire(ctx); 2275*b444d0e9SMax Reitz command(blk, ct, c, v); 227615afd94aSPaolo Bonzini aio_context_release(ctx); 2277dd583296SKevin Wolf } else { 2278dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2279dd583296SKevin Wolf } 2280dd583296SKevin Wolf } 2281dd583296SKevin Wolf g_free(input); 2282dd583296SKevin Wolf g_free(v); 2283dd583296SKevin Wolf } 2284dd583296SKevin Wolf 2285797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2286797ac58cSKevin Wolf { 2287797ac58cSKevin Wolf /* initialize commands */ 2288c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2289c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2290c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2291c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2292c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2293c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2294c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2295c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2296c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2297c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2298c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2299c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2300c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2301c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2302c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 23035bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2304c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 23054cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2306c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2307c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2308c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2309cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 23100e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2311797ac58cSKevin Wolf } 2312