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" 20*922a01a0SMarkus 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 51c2cdf5c5SKevin Wolf int qemuio_command_usage(const cmdinfo_t *ci) 52c2cdf5c5SKevin Wolf { 53c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 54c2cdf5c5SKevin Wolf return 0; 55c2cdf5c5SKevin Wolf } 56c2cdf5c5SKevin Wolf 574c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 58c2cdf5c5SKevin Wolf { 59c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 60c2cdf5c5SKevin Wolf return 1; 61c2cdf5c5SKevin Wolf } 624c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 63c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 64c2cdf5c5SKevin Wolf return 0; 65c2cdf5c5SKevin Wolf } 66c2cdf5c5SKevin Wolf return 1; 67c2cdf5c5SKevin Wolf } 68c2cdf5c5SKevin Wolf 694c7b7e9bSMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 703d21994fSKevin Wolf char **argv) 71c2cdf5c5SKevin Wolf { 72c2cdf5c5SKevin Wolf char *cmd = argv[0]; 73c2cdf5c5SKevin Wolf 744c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 75c2cdf5c5SKevin Wolf return 0; 76c2cdf5c5SKevin Wolf } 77c2cdf5c5SKevin Wolf 78c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 79c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 80c2cdf5c5SKevin Wolf fprintf(stderr, 81c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 82c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 83c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 84c2cdf5c5SKevin Wolf fprintf(stderr, 85c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 86c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 87c2cdf5c5SKevin Wolf } else { 88c2cdf5c5SKevin Wolf fprintf(stderr, 89c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 90c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 91c2cdf5c5SKevin Wolf } 92c2cdf5c5SKevin Wolf return 0; 93c2cdf5c5SKevin Wolf } 94887354bdSKevin Wolf 95887354bdSKevin Wolf /* Request additional permissions if necessary for this command. The caller 96887354bdSKevin Wolf * is responsible for restoring the original permissions afterwards if this 97887354bdSKevin Wolf * is what it wants. */ 98887354bdSKevin Wolf if (ct->perm && blk_is_available(blk)) { 99887354bdSKevin Wolf uint64_t orig_perm, orig_shared_perm; 100887354bdSKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 101887354bdSKevin Wolf 102887354bdSKevin Wolf if (ct->perm & ~orig_perm) { 103887354bdSKevin Wolf uint64_t new_perm; 104887354bdSKevin Wolf Error *local_err = NULL; 105887354bdSKevin Wolf int ret; 106887354bdSKevin Wolf 107887354bdSKevin Wolf new_perm = orig_perm | ct->perm; 108887354bdSKevin Wolf 109887354bdSKevin Wolf ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err); 110887354bdSKevin Wolf if (ret < 0) { 111887354bdSKevin Wolf error_report_err(local_err); 112887354bdSKevin Wolf return 0; 113887354bdSKevin Wolf } 114887354bdSKevin Wolf } 115887354bdSKevin Wolf } 116887354bdSKevin Wolf 117c2cdf5c5SKevin Wolf optind = 0; 1184c7b7e9bSMax Reitz return ct->cfunc(blk, argc, argv); 119c2cdf5c5SKevin Wolf } 120c2cdf5c5SKevin Wolf 121c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 122c2cdf5c5SKevin Wolf { 123c2cdf5c5SKevin Wolf cmdinfo_t *ct; 124c2cdf5c5SKevin Wolf 125c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 126c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 127c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 128c2cdf5c5SKevin Wolf { 129c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 130c2cdf5c5SKevin Wolf } 131c2cdf5c5SKevin Wolf } 132c2cdf5c5SKevin Wolf return NULL; 133c2cdf5c5SKevin Wolf } 134c2cdf5c5SKevin Wolf 1354694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1364694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1374694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1384694020dSStefan Hajnoczi void *opaque) 1394694020dSStefan Hajnoczi { 1404694020dSStefan Hajnoczi cmdinfo_t *ct; 1414694020dSStefan Hajnoczi size_t input_len = strlen(input); 1424694020dSStefan Hajnoczi 1434694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1444694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1454694020dSStefan Hajnoczi fn(ct->name, opaque); 1464694020dSStefan Hajnoczi } 1474694020dSStefan Hajnoczi } 1484694020dSStefan Hajnoczi } 1494694020dSStefan Hajnoczi 150c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 151c2cdf5c5SKevin Wolf { 152c2cdf5c5SKevin Wolf int c = 0; 153c2cdf5c5SKevin Wolf char *p; 1545839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 155c2cdf5c5SKevin Wolf 156c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 157c2cdf5c5SKevin Wolf if (!*p) { 158c2cdf5c5SKevin Wolf continue; 159c2cdf5c5SKevin Wolf } 160c2cdf5c5SKevin Wolf c++; 16108193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 162c2cdf5c5SKevin Wolf rval[c - 1] = p; 163c2cdf5c5SKevin Wolf rval[c] = NULL; 164c2cdf5c5SKevin Wolf } 165c2cdf5c5SKevin Wolf *count = c; 166c2cdf5c5SKevin Wolf return rval; 167c2cdf5c5SKevin Wolf } 168c2cdf5c5SKevin Wolf 169797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 170797ac58cSKevin Wolf { 171f17fd4fdSMarkus Armbruster int err; 172f46bfdbfSMarkus Armbruster uint64_t value; 173ef5a7885SJohn Snow 174f17fd4fdSMarkus Armbruster err = qemu_strtosz(s, NULL, &value); 175f17fd4fdSMarkus Armbruster if (err < 0) { 176f17fd4fdSMarkus Armbruster return err; 177f17fd4fdSMarkus Armbruster } 178f46bfdbfSMarkus Armbruster if (value > INT64_MAX) { 179f46bfdbfSMarkus Armbruster return -ERANGE; 180f46bfdbfSMarkus Armbruster } 181f17fd4fdSMarkus Armbruster return value; 182797ac58cSKevin Wolf } 183797ac58cSKevin Wolf 184a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 185a9ecfa00SJohn Snow { 186a9ecfa00SJohn Snow switch (rc) { 187a9ecfa00SJohn Snow case -EINVAL: 188a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 189a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 190a9ecfa00SJohn Snow break; 191a9ecfa00SJohn Snow case -ERANGE: 192a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 193a9ecfa00SJohn Snow break; 194a9ecfa00SJohn Snow default: 195a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 196a9ecfa00SJohn Snow } 197a9ecfa00SJohn Snow } 198a9ecfa00SJohn Snow 1990b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 2000b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 2010b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 2020b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 2030b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 2040b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 2050b613881SKevin Wolf 2060b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 2070b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 2080b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 2090b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 2100b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 2110b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 2120b613881SKevin Wolf 2130b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 2140b613881SKevin Wolf { 2150b613881SKevin Wolf char *trim; 2160b613881SKevin Wolf const char *suffix; 2170b613881SKevin Wolf 2180b613881SKevin Wolf if (value >= EXABYTES(1)) { 2190b613881SKevin Wolf suffix = " EiB"; 2200b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 2210b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 2220b613881SKevin Wolf suffix = " PiB"; 2230b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 2240b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 2250b613881SKevin Wolf suffix = " TiB"; 2260b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 2270b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 2280b613881SKevin Wolf suffix = " GiB"; 2290b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 2300b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 2310b613881SKevin Wolf suffix = " MiB"; 2320b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2330b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2340b613881SKevin Wolf suffix = " KiB"; 2350b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2360b613881SKevin Wolf } else { 2370b613881SKevin Wolf suffix = " bytes"; 2380b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2390b613881SKevin Wolf } 2400b613881SKevin Wolf 2410b613881SKevin Wolf trim = strstr(str, ".000"); 2420b613881SKevin Wolf if (trim) { 2430b613881SKevin Wolf strcpy(trim, suffix); 2440b613881SKevin Wolf } else { 2450b613881SKevin Wolf strcat(str, suffix); 2460b613881SKevin Wolf } 2470b613881SKevin Wolf } 2480b613881SKevin Wolf 2490b613881SKevin Wolf 2500b613881SKevin Wolf 2510b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2520b613881SKevin Wolf { 2530b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2540b613881SKevin Wolf if (t1.tv_usec < 0) { 2550b613881SKevin Wolf t1.tv_usec += 1000000; 2560b613881SKevin Wolf t1.tv_sec--; 2570b613881SKevin Wolf } 2580b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2590b613881SKevin Wolf return t1; 2600b613881SKevin Wolf } 2610b613881SKevin Wolf 2620b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2630b613881SKevin Wolf { 2640b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2650b613881SKevin Wolf } 2660b613881SKevin Wolf 2670b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2680b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2690b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2700b613881SKevin Wolf 2710b613881SKevin Wolf enum { 2720b613881SKevin Wolf DEFAULT_TIME = 0x0, 2730b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2740b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2750b613881SKevin Wolf }; 2760b613881SKevin Wolf 2770b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2780b613881SKevin Wolf { 2790b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2800b613881SKevin Wolf 2810b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2820b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2830b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2840b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2850b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2860b613881SKevin Wolf (unsigned int) (usec * 100)); 2870b613881SKevin Wolf return; 2880b613881SKevin Wolf } 2890b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2900b613881SKevin Wolf } 2910b613881SKevin Wolf 2920b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2930b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2940b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2950b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2960b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2970b613881SKevin Wolf (unsigned int) (usec * 100)); 2980b613881SKevin Wolf } else { 2990b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 3000b613881SKevin Wolf } 3010b613881SKevin Wolf } 3020b613881SKevin Wolf 303797ac58cSKevin Wolf /* 304797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 305797ac58cSKevin Wolf * 306797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 307797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 308797ac58cSKevin Wolf */ 309797ac58cSKevin Wolf static int parse_pattern(const char *arg) 310797ac58cSKevin Wolf { 311797ac58cSKevin Wolf char *endptr = NULL; 312797ac58cSKevin Wolf long pattern; 313797ac58cSKevin Wolf 314797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 315797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 316797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 317797ac58cSKevin Wolf return -1; 318797ac58cSKevin Wolf } 319797ac58cSKevin Wolf 320797ac58cSKevin Wolf return pattern; 321797ac58cSKevin Wolf } 322797ac58cSKevin Wolf 323797ac58cSKevin Wolf /* 324797ac58cSKevin Wolf * Memory allocation helpers. 325797ac58cSKevin Wolf * 326797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 327797ac58cSKevin Wolf * that is specified on the command line. 328797ac58cSKevin Wolf */ 329797ac58cSKevin Wolf 330797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3314c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 332797ac58cSKevin Wolf { 333797ac58cSKevin Wolf void *buf; 334797ac58cSKevin Wolf 335797ac58cSKevin Wolf if (qemuio_misalign) { 336797ac58cSKevin Wolf len += MISALIGN_OFFSET; 337797ac58cSKevin Wolf } 3384c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 339797ac58cSKevin Wolf memset(buf, pattern, len); 340797ac58cSKevin Wolf if (qemuio_misalign) { 341797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 342797ac58cSKevin Wolf } 343797ac58cSKevin Wolf return buf; 344797ac58cSKevin Wolf } 345797ac58cSKevin Wolf 346797ac58cSKevin Wolf static void qemu_io_free(void *p) 347797ac58cSKevin Wolf { 348797ac58cSKevin Wolf if (qemuio_misalign) { 349797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 350797ac58cSKevin Wolf } 351797ac58cSKevin Wolf qemu_vfree(p); 352797ac58cSKevin Wolf } 353797ac58cSKevin Wolf 3549b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 355797ac58cSKevin Wolf { 3569b0beaf3SJohn Snow uint64_t i; 3579b0beaf3SJohn Snow int j; 358797ac58cSKevin Wolf const uint8_t *p; 359797ac58cSKevin Wolf 360797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 361797ac58cSKevin Wolf const uint8_t *s = p; 362797ac58cSKevin Wolf 363797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 364797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 365797ac58cSKevin Wolf printf("%02x ", *p); 366797ac58cSKevin Wolf } 367797ac58cSKevin Wolf printf(" "); 368797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 369797ac58cSKevin Wolf if (isalnum(*s)) { 370797ac58cSKevin Wolf printf("%c", *s); 371797ac58cSKevin Wolf } else { 372797ac58cSKevin Wolf printf("."); 373797ac58cSKevin Wolf } 374797ac58cSKevin Wolf } 375797ac58cSKevin Wolf printf("\n"); 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf } 378797ac58cSKevin Wolf 379797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 380dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 381797ac58cSKevin Wolf { 382797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 383797ac58cSKevin Wolf 384797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 385797ac58cSKevin Wolf if (!Cflag) { 386797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 387797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3889b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 389797ac58cSKevin Wolf op, total, count, offset); 390797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 391797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 392797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3939b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 394797ac58cSKevin Wolf total, cnt, ts, 395797ac58cSKevin Wolf tdiv((double)total, *t), 396797ac58cSKevin Wolf tdiv((double)cnt, *t)); 397797ac58cSKevin Wolf } 398797ac58cSKevin Wolf } 399797ac58cSKevin Wolf 400797ac58cSKevin Wolf /* 401797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 402797ac58cSKevin Wolf * vector matching it. 403797ac58cSKevin Wolf */ 404797ac58cSKevin Wolf static void * 4054c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 406797ac58cSKevin Wolf int pattern) 407797ac58cSKevin Wolf { 408797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 409797ac58cSKevin Wolf size_t count = 0; 410797ac58cSKevin Wolf void *buf = NULL; 411797ac58cSKevin Wolf void *p; 412797ac58cSKevin Wolf int i; 413797ac58cSKevin Wolf 414797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 415797ac58cSKevin Wolf char *arg = argv[i]; 416797ac58cSKevin Wolf int64_t len; 417797ac58cSKevin Wolf 418797ac58cSKevin Wolf len = cvtnum(arg); 419797ac58cSKevin Wolf if (len < 0) { 420a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 421797ac58cSKevin Wolf goto fail; 422797ac58cSKevin Wolf } 423797ac58cSKevin Wolf 4243026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 4253026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 4263026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 4273026c468SAlberto Garcia goto fail; 4283026c468SAlberto Garcia } 4293026c468SAlberto Garcia 4303026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 4313026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 4323026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 433797ac58cSKevin Wolf goto fail; 434797ac58cSKevin Wolf } 435797ac58cSKevin Wolf 436797ac58cSKevin Wolf sizes[i] = len; 437797ac58cSKevin Wolf count += len; 438797ac58cSKevin Wolf } 439797ac58cSKevin Wolf 440797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 441797ac58cSKevin Wolf 4424c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 443797ac58cSKevin Wolf 444797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 445797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 446797ac58cSKevin Wolf p += sizes[i]; 447797ac58cSKevin Wolf } 448797ac58cSKevin Wolf 449797ac58cSKevin Wolf fail: 450797ac58cSKevin Wolf g_free(sizes); 451797ac58cSKevin Wolf return buf; 452797ac58cSKevin Wolf } 453797ac58cSKevin Wolf 4549b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 455f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 456797ac58cSKevin Wolf { 457f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4589b0beaf3SJohn Snow return -ERANGE; 4599b0beaf3SJohn Snow } 4609b0beaf3SJohn Snow 461f5a5ca79SManos Pitsidianakis *total = blk_pread(blk, offset, (uint8_t *)buf, bytes); 462797ac58cSKevin Wolf if (*total < 0) { 463797ac58cSKevin Wolf return *total; 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf return 1; 466797ac58cSKevin Wolf } 467797ac58cSKevin Wolf 4689b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 469f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 470797ac58cSKevin Wolf { 471f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4729b0beaf3SJohn Snow return -ERANGE; 4739b0beaf3SJohn Snow } 4749b0beaf3SJohn Snow 475f5a5ca79SManos Pitsidianakis *total = blk_pwrite(blk, offset, (uint8_t *)buf, bytes, flags); 476797ac58cSKevin Wolf if (*total < 0) { 477797ac58cSKevin Wolf return *total; 478797ac58cSKevin Wolf } 479797ac58cSKevin Wolf return 1; 480797ac58cSKevin Wolf } 481797ac58cSKevin Wolf 482797ac58cSKevin Wolf typedef struct { 4834c7b7e9bSMax Reitz BlockBackend *blk; 484797ac58cSKevin Wolf int64_t offset; 485f5a5ca79SManos Pitsidianakis int64_t bytes; 4869b0beaf3SJohn Snow int64_t *total; 487770e0e0eSEric Blake int flags; 488797ac58cSKevin Wolf int ret; 489797ac58cSKevin Wolf bool done; 490797ac58cSKevin Wolf } CoWriteZeroes; 491797ac58cSKevin Wolf 492d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 493797ac58cSKevin Wolf { 494797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 495797ac58cSKevin Wolf 496f5a5ca79SManos Pitsidianakis data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->bytes, 497770e0e0eSEric Blake data->flags); 498797ac58cSKevin Wolf data->done = true; 499797ac58cSKevin Wolf if (data->ret < 0) { 500797ac58cSKevin Wolf *data->total = data->ret; 501797ac58cSKevin Wolf return; 502797ac58cSKevin Wolf } 503797ac58cSKevin Wolf 504f5a5ca79SManos Pitsidianakis *data->total = data->bytes; 505797ac58cSKevin Wolf } 506797ac58cSKevin Wolf 507d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 508f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 509797ac58cSKevin Wolf { 510797ac58cSKevin Wolf Coroutine *co; 511797ac58cSKevin Wolf CoWriteZeroes data = { 5124c7b7e9bSMax Reitz .blk = blk, 513797ac58cSKevin Wolf .offset = offset, 514f5a5ca79SManos Pitsidianakis .bytes = bytes, 515797ac58cSKevin Wolf .total = total, 516770e0e0eSEric Blake .flags = flags, 517797ac58cSKevin Wolf .done = false, 518797ac58cSKevin Wolf }; 519797ac58cSKevin Wolf 520f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5219b0beaf3SJohn Snow return -ERANGE; 5229b0beaf3SJohn Snow } 5239b0beaf3SJohn Snow 5240b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 525324ec3e4SFam Zheng bdrv_coroutine_enter(blk_bs(blk), co); 526797ac58cSKevin Wolf while (!data.done) { 5274c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 528797ac58cSKevin Wolf } 529797ac58cSKevin Wolf if (data.ret < 0) { 530797ac58cSKevin Wolf return data.ret; 531797ac58cSKevin Wolf } else { 532797ac58cSKevin Wolf return 1; 533797ac58cSKevin Wolf } 534797ac58cSKevin Wolf } 535797ac58cSKevin Wolf 5364c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 537f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 538797ac58cSKevin Wolf { 539797ac58cSKevin Wolf int ret; 540797ac58cSKevin Wolf 541f5a5ca79SManos Pitsidianakis if (bytes >> 9 > BDRV_REQUEST_MAX_SECTORS) { 5429b0beaf3SJohn Snow return -ERANGE; 5439b0beaf3SJohn Snow } 5449b0beaf3SJohn Snow 545f5a5ca79SManos Pitsidianakis ret = blk_pwrite_compressed(blk, offset, buf, bytes); 546797ac58cSKevin Wolf if (ret < 0) { 547797ac58cSKevin Wolf return ret; 548797ac58cSKevin Wolf } 549f5a5ca79SManos Pitsidianakis *total = bytes; 550797ac58cSKevin Wolf return 1; 551797ac58cSKevin Wolf } 552797ac58cSKevin Wolf 5534c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5549b0beaf3SJohn Snow int64_t count, int64_t *total) 555797ac58cSKevin Wolf { 5569b0beaf3SJohn Snow if (count > INT_MAX) { 5579b0beaf3SJohn Snow return -ERANGE; 5589b0beaf3SJohn Snow } 5599b0beaf3SJohn Snow 5604c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 561797ac58cSKevin Wolf if (*total < 0) { 562797ac58cSKevin Wolf return *total; 563797ac58cSKevin Wolf } 564797ac58cSKevin Wolf return 1; 565797ac58cSKevin Wolf } 566797ac58cSKevin Wolf 5674c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5689b0beaf3SJohn Snow int64_t count, int64_t *total) 569797ac58cSKevin Wolf { 5709b0beaf3SJohn Snow if (count > INT_MAX) { 5719b0beaf3SJohn Snow return -ERANGE; 5729b0beaf3SJohn Snow } 5739b0beaf3SJohn Snow 5744c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 575797ac58cSKevin Wolf if (*total < 0) { 576797ac58cSKevin Wolf return *total; 577797ac58cSKevin Wolf } 578797ac58cSKevin Wolf return 1; 579797ac58cSKevin Wolf } 580797ac58cSKevin Wolf 581797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 582797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 583797ac58cSKevin Wolf { 584797ac58cSKevin Wolf *(int *)opaque = ret; 585797ac58cSKevin Wolf } 586797ac58cSKevin Wolf 5874c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 588797ac58cSKevin Wolf int64_t offset, int *total) 589797ac58cSKevin Wolf { 590797ac58cSKevin Wolf int async_ret = NOT_DONE; 591797ac58cSKevin Wolf 5927b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 593797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 594797ac58cSKevin Wolf main_loop_wait(false); 595797ac58cSKevin Wolf } 596797ac58cSKevin Wolf 597797ac58cSKevin Wolf *total = qiov->size; 598797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 599797ac58cSKevin Wolf } 600797ac58cSKevin Wolf 6014c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 602770e0e0eSEric Blake int64_t offset, int flags, int *total) 603797ac58cSKevin Wolf { 604797ac58cSKevin Wolf int async_ret = NOT_DONE; 605797ac58cSKevin Wolf 606770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 607797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 608797ac58cSKevin Wolf main_loop_wait(false); 609797ac58cSKevin Wolf } 610797ac58cSKevin Wolf 611797ac58cSKevin Wolf *total = qiov->size; 612797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 613797ac58cSKevin Wolf } 614797ac58cSKevin Wolf 615797ac58cSKevin Wolf static void read_help(void) 616797ac58cSKevin Wolf { 617797ac58cSKevin Wolf printf( 618797ac58cSKevin Wolf "\n" 619797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 620797ac58cSKevin Wolf "\n" 621797ac58cSKevin Wolf " Example:\n" 622797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 623797ac58cSKevin Wolf "\n" 624797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 625797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 626797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 627797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 628797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 629093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 630797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 631797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 632797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 633797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 634797ac58cSKevin Wolf "\n"); 635797ac58cSKevin Wolf } 636797ac58cSKevin Wolf 6374c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 638797ac58cSKevin Wolf 639797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 640797ac58cSKevin Wolf .name = "read", 641797ac58cSKevin Wolf .altname = "r", 642797ac58cSKevin Wolf .cfunc = read_f, 643797ac58cSKevin Wolf .argmin = 2, 644797ac58cSKevin Wolf .argmax = -1, 645093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 646797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 647797ac58cSKevin Wolf .help = read_help, 648797ac58cSKevin Wolf }; 649797ac58cSKevin Wolf 6504c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 651797ac58cSKevin Wolf { 652797ac58cSKevin Wolf struct timeval t1, t2; 653093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 654dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 655797ac58cSKevin Wolf int c, cnt; 656797ac58cSKevin Wolf char *buf; 657797ac58cSKevin Wolf int64_t offset; 6589b0beaf3SJohn Snow int64_t count; 659797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6609b0beaf3SJohn Snow int64_t total = 0; 6619b0beaf3SJohn Snow int pattern = 0; 6629b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 663797ac58cSKevin Wolf 664b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 665797ac58cSKevin Wolf switch (c) { 666797ac58cSKevin Wolf case 'b': 667dc38852aSEric Blake bflag = true; 668797ac58cSKevin Wolf break; 669797ac58cSKevin Wolf case 'C': 670dc38852aSEric Blake Cflag = true; 671797ac58cSKevin Wolf break; 672797ac58cSKevin Wolf case 'l': 673dc38852aSEric Blake lflag = true; 674797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 675797ac58cSKevin Wolf if (pattern_count < 0) { 676a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 677797ac58cSKevin Wolf return 0; 678797ac58cSKevin Wolf } 679797ac58cSKevin Wolf break; 680797ac58cSKevin Wolf case 'p': 681093ea232SEric Blake /* Ignored for backwards compatibility */ 682797ac58cSKevin Wolf break; 683797ac58cSKevin Wolf case 'P': 684dc38852aSEric Blake Pflag = true; 685797ac58cSKevin Wolf pattern = parse_pattern(optarg); 686797ac58cSKevin Wolf if (pattern < 0) { 687797ac58cSKevin Wolf return 0; 688797ac58cSKevin Wolf } 689797ac58cSKevin Wolf break; 690797ac58cSKevin Wolf case 'q': 691dc38852aSEric Blake qflag = true; 692797ac58cSKevin Wolf break; 693797ac58cSKevin Wolf case 's': 694dc38852aSEric Blake sflag = true; 695797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 696797ac58cSKevin Wolf if (pattern_offset < 0) { 697a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 698797ac58cSKevin Wolf return 0; 699797ac58cSKevin Wolf } 700797ac58cSKevin Wolf break; 701797ac58cSKevin Wolf case 'v': 702dc38852aSEric Blake vflag = true; 703797ac58cSKevin Wolf break; 704797ac58cSKevin Wolf default: 705c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 706797ac58cSKevin Wolf } 707797ac58cSKevin Wolf } 708797ac58cSKevin Wolf 709797ac58cSKevin Wolf if (optind != argc - 2) { 710c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 711797ac58cSKevin Wolf } 712797ac58cSKevin Wolf 713797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 714797ac58cSKevin Wolf if (offset < 0) { 715a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 716797ac58cSKevin Wolf return 0; 717797ac58cSKevin Wolf } 718797ac58cSKevin Wolf 719797ac58cSKevin Wolf optind++; 720797ac58cSKevin Wolf count = cvtnum(argv[optind]); 721797ac58cSKevin Wolf if (count < 0) { 722a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 723797ac58cSKevin Wolf return 0; 7243026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7259b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7263026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 7279b0beaf3SJohn Snow return 0; 728797ac58cSKevin Wolf } 729797ac58cSKevin Wolf 730797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 731c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 732797ac58cSKevin Wolf } 733797ac58cSKevin Wolf 734797ac58cSKevin Wolf if (!lflag) { 735797ac58cSKevin Wolf pattern_count = count - pattern_offset; 736797ac58cSKevin Wolf } 737797ac58cSKevin Wolf 738797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 739797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 740797ac58cSKevin Wolf return 0; 741797ac58cSKevin Wolf } 742797ac58cSKevin Wolf 743093ea232SEric Blake if (bflag) { 7441bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 7451bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 746797ac58cSKevin Wolf offset); 747797ac58cSKevin Wolf return 0; 748797ac58cSKevin Wolf } 7491bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 7501bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 751797ac58cSKevin Wolf count); 752797ac58cSKevin Wolf return 0; 753797ac58cSKevin Wolf } 754797ac58cSKevin Wolf } 755797ac58cSKevin Wolf 7564c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 757797ac58cSKevin Wolf 758797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7597b3f9712SEric Blake if (bflag) { 7604c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 761797ac58cSKevin Wolf } else { 7627b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 763797ac58cSKevin Wolf } 764797ac58cSKevin Wolf gettimeofday(&t2, NULL); 765797ac58cSKevin Wolf 766797ac58cSKevin Wolf if (cnt < 0) { 767797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 768797ac58cSKevin Wolf goto out; 769797ac58cSKevin Wolf } 770797ac58cSKevin Wolf 771797ac58cSKevin Wolf if (Pflag) { 772797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 773797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 774797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 775797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7769b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 777797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 778797ac58cSKevin Wolf } 779797ac58cSKevin Wolf g_free(cmp_buf); 780797ac58cSKevin Wolf } 781797ac58cSKevin Wolf 782797ac58cSKevin Wolf if (qflag) { 783797ac58cSKevin Wolf goto out; 784797ac58cSKevin Wolf } 785797ac58cSKevin Wolf 786797ac58cSKevin Wolf if (vflag) { 787797ac58cSKevin Wolf dump_buffer(buf, offset, count); 788797ac58cSKevin Wolf } 789797ac58cSKevin Wolf 790797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 791797ac58cSKevin Wolf t2 = tsub(t2, t1); 792797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 793797ac58cSKevin Wolf 794797ac58cSKevin Wolf out: 795797ac58cSKevin Wolf qemu_io_free(buf); 796797ac58cSKevin Wolf 797797ac58cSKevin Wolf return 0; 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 8194c7b7e9bSMax Reitz static int 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 8314c7b7e9bSMax Reitz static int 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) { 854797ac58cSKevin Wolf return 0; 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: 864c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 865797ac58cSKevin Wolf } 866797ac58cSKevin Wolf } 867797ac58cSKevin Wolf 868797ac58cSKevin Wolf if (optind > argc - 2) { 869c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 870797ac58cSKevin Wolf } 871797ac58cSKevin Wolf 872797ac58cSKevin Wolf 873797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 874797ac58cSKevin Wolf if (offset < 0) { 875a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 876797ac58cSKevin Wolf return 0; 877797ac58cSKevin Wolf } 878797ac58cSKevin Wolf optind++; 879797ac58cSKevin Wolf 880797ac58cSKevin Wolf nr_iov = argc - optind; 8814c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 882797ac58cSKevin Wolf if (buf == NULL) { 883797ac58cSKevin Wolf return 0; 884797ac58cSKevin Wolf } 885797ac58cSKevin Wolf 886797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8874c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 888797ac58cSKevin Wolf gettimeofday(&t2, NULL); 889797ac58cSKevin Wolf 890797ac58cSKevin Wolf if (cnt < 0) { 891797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 892797ac58cSKevin Wolf goto out; 893797ac58cSKevin Wolf } 894797ac58cSKevin Wolf 895797ac58cSKevin Wolf if (Pflag) { 896797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 897797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 898797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 899797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 900797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 901797ac58cSKevin Wolf } 902797ac58cSKevin Wolf g_free(cmp_buf); 903797ac58cSKevin Wolf } 904797ac58cSKevin Wolf 905797ac58cSKevin Wolf if (qflag) { 906797ac58cSKevin Wolf goto out; 907797ac58cSKevin Wolf } 908797ac58cSKevin Wolf 909797ac58cSKevin Wolf if (vflag) { 910797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 911797ac58cSKevin Wolf } 912797ac58cSKevin Wolf 913797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 914797ac58cSKevin Wolf t2 = tsub(t2, t1); 915797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 916797ac58cSKevin Wolf 917797ac58cSKevin Wolf out: 918797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 919797ac58cSKevin Wolf qemu_io_free(buf); 920797ac58cSKevin Wolf return 0; 921797ac58cSKevin Wolf } 922797ac58cSKevin Wolf 923797ac58cSKevin Wolf static void write_help(void) 924797ac58cSKevin Wolf { 925797ac58cSKevin Wolf printf( 926797ac58cSKevin Wolf "\n" 927797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 928797ac58cSKevin Wolf "\n" 929797ac58cSKevin Wolf " Example:\n" 930797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 931797ac58cSKevin Wolf "\n" 932797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 933797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 934797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9354c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 936770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 937093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 938797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 939797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 940797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 941c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 942d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 943797ac58cSKevin Wolf "\n"); 944797ac58cSKevin Wolf } 945797ac58cSKevin Wolf 9464c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 947797ac58cSKevin Wolf 948797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 949797ac58cSKevin Wolf .name = "write", 950797ac58cSKevin Wolf .altname = "w", 951797ac58cSKevin Wolf .cfunc = write_f, 952887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 953797ac58cSKevin Wolf .argmin = 2, 954797ac58cSKevin Wolf .argmax = -1, 955c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 956797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 957797ac58cSKevin Wolf .help = write_help, 958797ac58cSKevin Wolf }; 959797ac58cSKevin Wolf 9604c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 961797ac58cSKevin Wolf { 962797ac58cSKevin Wolf struct timeval t1, t2; 963093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 964dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 965770e0e0eSEric Blake int flags = 0; 966797ac58cSKevin Wolf int c, cnt; 967797ac58cSKevin Wolf char *buf = NULL; 968797ac58cSKevin Wolf int64_t offset; 9699b0beaf3SJohn Snow int64_t count; 970797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9719b0beaf3SJohn Snow int64_t total = 0; 972797ac58cSKevin Wolf int pattern = 0xcd; 973797ac58cSKevin Wolf 974c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 975797ac58cSKevin Wolf switch (c) { 976797ac58cSKevin Wolf case 'b': 977dc38852aSEric Blake bflag = true; 978797ac58cSKevin Wolf break; 979797ac58cSKevin Wolf case 'c': 980dc38852aSEric Blake cflag = true; 981797ac58cSKevin Wolf break; 982797ac58cSKevin Wolf case 'C': 983dc38852aSEric Blake Cflag = true; 984797ac58cSKevin Wolf break; 985770e0e0eSEric Blake case 'f': 986770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 987770e0e0eSEric Blake break; 988797ac58cSKevin Wolf case 'p': 989093ea232SEric Blake /* Ignored for backwards compatibility */ 990797ac58cSKevin Wolf break; 991797ac58cSKevin Wolf case 'P': 992dc38852aSEric Blake Pflag = true; 993797ac58cSKevin Wolf pattern = parse_pattern(optarg); 994797ac58cSKevin Wolf if (pattern < 0) { 995797ac58cSKevin Wolf return 0; 996797ac58cSKevin Wolf } 997797ac58cSKevin Wolf break; 998797ac58cSKevin Wolf case 'q': 999dc38852aSEric Blake qflag = true; 1000797ac58cSKevin Wolf break; 1001c2e001ccSEric Blake case 'u': 1002c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1003c2e001ccSEric Blake break; 1004797ac58cSKevin Wolf case 'z': 1005dc38852aSEric Blake zflag = true; 1006797ac58cSKevin Wolf break; 1007797ac58cSKevin Wolf default: 1008c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 1009797ac58cSKevin Wolf } 1010797ac58cSKevin Wolf } 1011797ac58cSKevin Wolf 1012797ac58cSKevin Wolf if (optind != argc - 2) { 1013c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 1014797ac58cSKevin Wolf } 1015797ac58cSKevin Wolf 1016093ea232SEric Blake if (bflag && zflag) { 1017093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1018797ac58cSKevin Wolf return 0; 1019797ac58cSKevin Wolf } 1020797ac58cSKevin Wolf 1021770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1022770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1023770e0e0eSEric Blake return 0; 1024770e0e0eSEric Blake } 1025770e0e0eSEric Blake 1026c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1027c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1028c2e001ccSEric Blake return 0; 1029c2e001ccSEric Blake } 1030c2e001ccSEric Blake 1031797ac58cSKevin Wolf if (zflag && Pflag) { 1032797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1033797ac58cSKevin Wolf return 0; 1034797ac58cSKevin Wolf } 1035797ac58cSKevin Wolf 1036797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1037797ac58cSKevin Wolf if (offset < 0) { 1038a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1039797ac58cSKevin Wolf return 0; 1040797ac58cSKevin Wolf } 1041797ac58cSKevin Wolf 1042797ac58cSKevin Wolf optind++; 1043797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1044797ac58cSKevin Wolf if (count < 0) { 1045a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1046797ac58cSKevin Wolf return 0; 10473026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10489b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10493026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 10509b0beaf3SJohn Snow return 0; 1051797ac58cSKevin Wolf } 1052797ac58cSKevin Wolf 1053093ea232SEric Blake if (bflag || cflag) { 10541bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 10551bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1056797ac58cSKevin Wolf offset); 1057797ac58cSKevin Wolf return 0; 1058797ac58cSKevin Wolf } 1059797ac58cSKevin Wolf 10601bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 10611bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1062797ac58cSKevin Wolf count); 1063797ac58cSKevin Wolf return 0; 1064797ac58cSKevin Wolf } 1065797ac58cSKevin Wolf } 1066797ac58cSKevin Wolf 1067797ac58cSKevin Wolf if (!zflag) { 10684c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1069797ac58cSKevin Wolf } 1070797ac58cSKevin Wolf 1071797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10727b3f9712SEric Blake if (bflag) { 10734c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1074797ac58cSKevin Wolf } else if (zflag) { 1075d004bd52SEric Blake cnt = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1076797ac58cSKevin Wolf } else if (cflag) { 10774c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1078797ac58cSKevin Wolf } else { 1079770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1080797ac58cSKevin Wolf } 1081797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1082797ac58cSKevin Wolf 1083797ac58cSKevin Wolf if (cnt < 0) { 1084797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1085797ac58cSKevin Wolf goto out; 1086797ac58cSKevin Wolf } 1087797ac58cSKevin Wolf 1088797ac58cSKevin Wolf if (qflag) { 1089797ac58cSKevin Wolf goto out; 1090797ac58cSKevin Wolf } 1091797ac58cSKevin Wolf 1092797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1093797ac58cSKevin Wolf t2 = tsub(t2, t1); 1094797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1095797ac58cSKevin Wolf 1096797ac58cSKevin Wolf out: 1097797ac58cSKevin Wolf if (!zflag) { 1098797ac58cSKevin Wolf qemu_io_free(buf); 1099797ac58cSKevin Wolf } 1100797ac58cSKevin Wolf 1101797ac58cSKevin Wolf return 0; 1102797ac58cSKevin Wolf } 1103797ac58cSKevin Wolf 1104797ac58cSKevin Wolf static void 1105797ac58cSKevin Wolf writev_help(void) 1106797ac58cSKevin Wolf { 1107797ac58cSKevin Wolf printf( 1108797ac58cSKevin Wolf "\n" 1109797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1110797ac58cSKevin Wolf "\n" 1111797ac58cSKevin Wolf " Example:\n" 11126e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1113797ac58cSKevin Wolf "\n" 1114797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1115797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1116797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1117797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1118770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1119797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1120797ac58cSKevin Wolf "\n"); 1121797ac58cSKevin Wolf } 1122797ac58cSKevin Wolf 11234c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1124797ac58cSKevin Wolf 1125797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1126797ac58cSKevin Wolf .name = "writev", 1127797ac58cSKevin Wolf .cfunc = writev_f, 1128887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1129797ac58cSKevin Wolf .argmin = 2, 1130797ac58cSKevin Wolf .argmax = -1, 1131770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1132797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1133797ac58cSKevin Wolf .help = writev_help, 1134797ac58cSKevin Wolf }; 1135797ac58cSKevin Wolf 11364c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1137797ac58cSKevin Wolf { 1138797ac58cSKevin Wolf struct timeval t1, t2; 1139dc38852aSEric Blake bool Cflag = false, qflag = false; 1140770e0e0eSEric Blake int flags = 0; 1141797ac58cSKevin Wolf int c, cnt; 1142797ac58cSKevin Wolf char *buf; 1143797ac58cSKevin Wolf int64_t offset; 1144797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1145797ac58cSKevin Wolf int total = 0; 1146797ac58cSKevin Wolf int nr_iov; 1147797ac58cSKevin Wolf int pattern = 0xcd; 1148797ac58cSKevin Wolf QEMUIOVector qiov; 1149797ac58cSKevin Wolf 11504ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1151797ac58cSKevin Wolf switch (c) { 1152797ac58cSKevin Wolf case 'C': 1153dc38852aSEric Blake Cflag = true; 1154797ac58cSKevin Wolf break; 1155770e0e0eSEric Blake case 'f': 1156770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1157770e0e0eSEric Blake break; 1158797ac58cSKevin Wolf case 'q': 1159dc38852aSEric Blake qflag = true; 1160797ac58cSKevin Wolf break; 1161797ac58cSKevin Wolf case 'P': 1162797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1163797ac58cSKevin Wolf if (pattern < 0) { 1164797ac58cSKevin Wolf return 0; 1165797ac58cSKevin Wolf } 1166797ac58cSKevin Wolf break; 1167797ac58cSKevin Wolf default: 1168c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1169797ac58cSKevin Wolf } 1170797ac58cSKevin Wolf } 1171797ac58cSKevin Wolf 1172797ac58cSKevin Wolf if (optind > argc - 2) { 1173c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1174797ac58cSKevin Wolf } 1175797ac58cSKevin Wolf 1176797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1177797ac58cSKevin Wolf if (offset < 0) { 1178a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1179797ac58cSKevin Wolf return 0; 1180797ac58cSKevin Wolf } 1181797ac58cSKevin Wolf optind++; 1182797ac58cSKevin Wolf 1183797ac58cSKevin Wolf nr_iov = argc - optind; 11844c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1185797ac58cSKevin Wolf if (buf == NULL) { 1186797ac58cSKevin Wolf return 0; 1187797ac58cSKevin Wolf } 1188797ac58cSKevin Wolf 1189797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1190770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1191797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1192797ac58cSKevin Wolf 1193797ac58cSKevin Wolf if (cnt < 0) { 1194797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1195797ac58cSKevin Wolf goto out; 1196797ac58cSKevin Wolf } 1197797ac58cSKevin Wolf 1198797ac58cSKevin Wolf if (qflag) { 1199797ac58cSKevin Wolf goto out; 1200797ac58cSKevin Wolf } 1201797ac58cSKevin Wolf 1202797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1203797ac58cSKevin Wolf t2 = tsub(t2, t1); 1204797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1205797ac58cSKevin Wolf out: 1206797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1207797ac58cSKevin Wolf qemu_io_free(buf); 1208797ac58cSKevin Wolf return 0; 1209797ac58cSKevin Wolf } 1210797ac58cSKevin Wolf 1211797ac58cSKevin Wolf struct aio_ctx { 12124c7b7e9bSMax Reitz BlockBackend *blk; 1213797ac58cSKevin Wolf QEMUIOVector qiov; 1214797ac58cSKevin Wolf int64_t offset; 1215797ac58cSKevin Wolf char *buf; 1216dc38852aSEric Blake bool qflag; 1217dc38852aSEric Blake bool vflag; 1218dc38852aSEric Blake bool Cflag; 1219dc38852aSEric Blake bool Pflag; 1220dc38852aSEric Blake bool zflag; 1221a91f9584SFam Zheng BlockAcctCookie acct; 1222797ac58cSKevin Wolf int pattern; 1223797ac58cSKevin Wolf struct timeval t1; 1224797ac58cSKevin Wolf }; 1225797ac58cSKevin Wolf 1226797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1227797ac58cSKevin Wolf { 1228797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1229797ac58cSKevin Wolf struct timeval t2; 1230797ac58cSKevin Wolf 1231797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1232797ac58cSKevin Wolf 1233797ac58cSKevin Wolf 1234797ac58cSKevin Wolf if (ret < 0) { 1235797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1236556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1237797ac58cSKevin Wolf goto out; 1238797ac58cSKevin Wolf } 1239797ac58cSKevin Wolf 12404c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1241a91f9584SFam Zheng 1242797ac58cSKevin Wolf if (ctx->qflag) { 1243797ac58cSKevin Wolf goto out; 1244797ac58cSKevin Wolf } 1245797ac58cSKevin Wolf 1246797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1247797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1248797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1249797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1250797ac58cSKevin Wolf out: 12515ceb7765SKevin Wolf if (!ctx->zflag) { 1252797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1253797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12545ceb7765SKevin Wolf } 1255797ac58cSKevin Wolf g_free(ctx); 1256797ac58cSKevin Wolf } 1257797ac58cSKevin Wolf 1258797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1259797ac58cSKevin Wolf { 1260797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1261797ac58cSKevin Wolf struct timeval t2; 1262797ac58cSKevin Wolf 1263797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1264797ac58cSKevin Wolf 1265797ac58cSKevin Wolf if (ret < 0) { 1266797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1267556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1268797ac58cSKevin Wolf goto out; 1269797ac58cSKevin Wolf } 1270797ac58cSKevin Wolf 1271797ac58cSKevin Wolf if (ctx->Pflag) { 1272797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1273797ac58cSKevin Wolf 1274797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1275797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1276797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1277797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1278797ac58cSKevin Wolf } 1279797ac58cSKevin Wolf g_free(cmp_buf); 1280797ac58cSKevin Wolf } 1281797ac58cSKevin Wolf 12824c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1283a91f9584SFam Zheng 1284797ac58cSKevin Wolf if (ctx->qflag) { 1285797ac58cSKevin Wolf goto out; 1286797ac58cSKevin Wolf } 1287797ac58cSKevin Wolf 1288797ac58cSKevin Wolf if (ctx->vflag) { 1289797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1290797ac58cSKevin Wolf } 1291797ac58cSKevin Wolf 1292797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1293797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1294797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1295797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1296797ac58cSKevin Wolf out: 1297797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1298797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1299797ac58cSKevin Wolf g_free(ctx); 1300797ac58cSKevin Wolf } 1301797ac58cSKevin Wolf 1302797ac58cSKevin Wolf static void aio_read_help(void) 1303797ac58cSKevin Wolf { 1304797ac58cSKevin Wolf printf( 1305797ac58cSKevin Wolf "\n" 1306797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1307797ac58cSKevin Wolf "\n" 1308797ac58cSKevin Wolf " Example:\n" 1309797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1310797ac58cSKevin Wolf "\n" 1311797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1312797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1313797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1314797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1315797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1316797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 131737546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1318797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1319797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1320797ac58cSKevin Wolf "\n"); 1321797ac58cSKevin Wolf } 1322797ac58cSKevin Wolf 13234c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1324797ac58cSKevin Wolf 1325797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1326797ac58cSKevin Wolf .name = "aio_read", 1327797ac58cSKevin Wolf .cfunc = aio_read_f, 1328797ac58cSKevin Wolf .argmin = 2, 1329797ac58cSKevin Wolf .argmax = -1, 133037546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1331797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1332797ac58cSKevin Wolf .help = aio_read_help, 1333797ac58cSKevin Wolf }; 1334797ac58cSKevin Wolf 13354c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1336797ac58cSKevin Wolf { 1337797ac58cSKevin Wolf int nr_iov, c; 1338797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1339797ac58cSKevin Wolf 13404c7b7e9bSMax Reitz ctx->blk = blk; 134137546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1342797ac58cSKevin Wolf switch (c) { 1343797ac58cSKevin Wolf case 'C': 1344dc38852aSEric Blake ctx->Cflag = true; 1345797ac58cSKevin Wolf break; 1346797ac58cSKevin Wolf case 'P': 1347dc38852aSEric Blake ctx->Pflag = true; 1348797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1349797ac58cSKevin Wolf if (ctx->pattern < 0) { 1350797ac58cSKevin Wolf g_free(ctx); 1351797ac58cSKevin Wolf return 0; 1352797ac58cSKevin Wolf } 1353797ac58cSKevin Wolf break; 135437546ff2SEric Blake case 'i': 135537546ff2SEric Blake printf("injecting invalid read request\n"); 135637546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 135737546ff2SEric Blake g_free(ctx); 135837546ff2SEric Blake return 0; 1359797ac58cSKevin Wolf case 'q': 1360dc38852aSEric Blake ctx->qflag = true; 1361797ac58cSKevin Wolf break; 1362797ac58cSKevin Wolf case 'v': 1363dc38852aSEric Blake ctx->vflag = true; 1364797ac58cSKevin Wolf break; 1365797ac58cSKevin Wolf default: 1366797ac58cSKevin Wolf g_free(ctx); 1367c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1368797ac58cSKevin Wolf } 1369797ac58cSKevin Wolf } 1370797ac58cSKevin Wolf 1371797ac58cSKevin Wolf if (optind > argc - 2) { 1372797ac58cSKevin Wolf g_free(ctx); 1373c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1374797ac58cSKevin Wolf } 1375797ac58cSKevin Wolf 1376797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1377797ac58cSKevin Wolf if (ctx->offset < 0) { 1378a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1379797ac58cSKevin Wolf g_free(ctx); 1380797ac58cSKevin Wolf return 0; 1381797ac58cSKevin Wolf } 1382797ac58cSKevin Wolf optind++; 1383797ac58cSKevin Wolf 1384797ac58cSKevin Wolf nr_iov = argc - optind; 13854c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1386797ac58cSKevin Wolf if (ctx->buf == NULL) { 1387556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1388797ac58cSKevin Wolf g_free(ctx); 1389797ac58cSKevin Wolf return 0; 1390797ac58cSKevin Wolf } 1391797ac58cSKevin Wolf 1392797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 13934c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 13944c7b7e9bSMax Reitz BLOCK_ACCT_READ); 13957b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1396797ac58cSKevin Wolf return 0; 1397797ac58cSKevin Wolf } 1398797ac58cSKevin Wolf 1399797ac58cSKevin Wolf static void aio_write_help(void) 1400797ac58cSKevin Wolf { 1401797ac58cSKevin Wolf printf( 1402797ac58cSKevin Wolf "\n" 1403797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1404797ac58cSKevin Wolf " from multiple buffers\n" 1405797ac58cSKevin Wolf "\n" 1406797ac58cSKevin Wolf " Example:\n" 1407797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1408797ac58cSKevin Wolf "\n" 1409797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1410797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1411797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1412797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1413797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1414797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1415770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 141637546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1417797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1418c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1419d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1420797ac58cSKevin Wolf "\n"); 1421797ac58cSKevin Wolf } 1422797ac58cSKevin Wolf 14234c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1424797ac58cSKevin Wolf 1425797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1426797ac58cSKevin Wolf .name = "aio_write", 1427797ac58cSKevin Wolf .cfunc = aio_write_f, 1428887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1429797ac58cSKevin Wolf .argmin = 2, 1430797ac58cSKevin Wolf .argmax = -1, 143137546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1432797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1433797ac58cSKevin Wolf .help = aio_write_help, 1434797ac58cSKevin Wolf }; 1435797ac58cSKevin Wolf 14364c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1437797ac58cSKevin Wolf { 1438797ac58cSKevin Wolf int nr_iov, c; 1439797ac58cSKevin Wolf int pattern = 0xcd; 1440797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1441770e0e0eSEric Blake int flags = 0; 1442797ac58cSKevin Wolf 14434c7b7e9bSMax Reitz ctx->blk = blk; 144437546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1445797ac58cSKevin Wolf switch (c) { 1446797ac58cSKevin Wolf case 'C': 1447dc38852aSEric Blake ctx->Cflag = true; 1448797ac58cSKevin Wolf break; 1449770e0e0eSEric Blake case 'f': 1450770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1451770e0e0eSEric Blake break; 1452797ac58cSKevin Wolf case 'q': 1453dc38852aSEric Blake ctx->qflag = true; 1454797ac58cSKevin Wolf break; 1455c2e001ccSEric Blake case 'u': 1456c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1457c2e001ccSEric Blake break; 1458797ac58cSKevin Wolf case 'P': 1459797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1460797ac58cSKevin Wolf if (pattern < 0) { 1461797ac58cSKevin Wolf g_free(ctx); 1462797ac58cSKevin Wolf return 0; 1463797ac58cSKevin Wolf } 1464797ac58cSKevin Wolf break; 146537546ff2SEric Blake case 'i': 146637546ff2SEric Blake printf("injecting invalid write request\n"); 146737546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 146837546ff2SEric Blake g_free(ctx); 146937546ff2SEric Blake return 0; 14705ceb7765SKevin Wolf case 'z': 1471dc38852aSEric Blake ctx->zflag = true; 14725ceb7765SKevin Wolf break; 1473797ac58cSKevin Wolf default: 1474797ac58cSKevin Wolf g_free(ctx); 1475c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1476797ac58cSKevin Wolf } 1477797ac58cSKevin Wolf } 1478797ac58cSKevin Wolf 1479797ac58cSKevin Wolf if (optind > argc - 2) { 1480797ac58cSKevin Wolf g_free(ctx); 1481c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1482797ac58cSKevin Wolf } 1483797ac58cSKevin Wolf 14845ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 14855ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 14865ceb7765SKevin Wolf g_free(ctx); 14875ceb7765SKevin Wolf return 0; 14885ceb7765SKevin Wolf } 14895ceb7765SKevin Wolf 1490c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1491c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 14924ca1d340SEric Blake g_free(ctx); 1493c2e001ccSEric Blake return 0; 1494c2e001ccSEric Blake } 1495c2e001ccSEric Blake 14965ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 14975ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 14985ceb7765SKevin Wolf g_free(ctx); 14995ceb7765SKevin Wolf return 0; 15005ceb7765SKevin Wolf } 15015ceb7765SKevin Wolf 1502797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1503797ac58cSKevin Wolf if (ctx->offset < 0) { 1504a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1505797ac58cSKevin Wolf g_free(ctx); 1506797ac58cSKevin Wolf return 0; 1507797ac58cSKevin Wolf } 1508797ac58cSKevin Wolf optind++; 1509797ac58cSKevin Wolf 15105ceb7765SKevin Wolf if (ctx->zflag) { 15115ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 15125ceb7765SKevin Wolf if (count < 0) { 15135ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 15140e01b76eSKevin Wolf g_free(ctx); 15155ceb7765SKevin Wolf return 0; 15165ceb7765SKevin Wolf } 15175ceb7765SKevin Wolf 15185ceb7765SKevin Wolf ctx->qiov.size = count; 1519d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1520770e0e0eSEric Blake ctx); 15215ceb7765SKevin Wolf } else { 1522797ac58cSKevin Wolf nr_iov = argc - optind; 15235ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 15245ceb7765SKevin Wolf pattern); 1525797ac58cSKevin Wolf if (ctx->buf == NULL) { 1526556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1527797ac58cSKevin Wolf g_free(ctx); 1528797ac58cSKevin Wolf return 0; 1529797ac58cSKevin Wolf } 1530797ac58cSKevin Wolf 1531797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 15324c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15334c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 15345ceb7765SKevin Wolf 1535770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1536770e0e0eSEric Blake ctx); 15375ceb7765SKevin Wolf } 1538797ac58cSKevin Wolf return 0; 1539797ac58cSKevin Wolf } 1540797ac58cSKevin Wolf 15414c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1542797ac58cSKevin Wolf { 1543556c2b60SAlberto Garcia BlockAcctCookie cookie; 1544556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15454c7b7e9bSMax Reitz blk_drain_all(); 1546556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1547797ac58cSKevin Wolf return 0; 1548797ac58cSKevin Wolf } 1549797ac58cSKevin Wolf 1550797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1551797ac58cSKevin Wolf .name = "aio_flush", 1552797ac58cSKevin Wolf .cfunc = aio_flush_f, 1553797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1554797ac58cSKevin Wolf }; 1555797ac58cSKevin Wolf 15564c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1557797ac58cSKevin Wolf { 15584c7b7e9bSMax Reitz blk_flush(blk); 1559797ac58cSKevin Wolf return 0; 1560797ac58cSKevin Wolf } 1561797ac58cSKevin Wolf 1562797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1563797ac58cSKevin Wolf .name = "flush", 1564797ac58cSKevin Wolf .altname = "f", 1565797ac58cSKevin Wolf .cfunc = flush_f, 1566797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1567797ac58cSKevin Wolf }; 1568797ac58cSKevin Wolf 15694c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1570797ac58cSKevin Wolf { 1571ed3d2ec9SMax Reitz Error *local_err = NULL; 1572797ac58cSKevin Wolf int64_t offset; 1573797ac58cSKevin Wolf int ret; 1574797ac58cSKevin Wolf 1575797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1576797ac58cSKevin Wolf if (offset < 0) { 1577a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1578797ac58cSKevin Wolf return 0; 1579797ac58cSKevin Wolf } 1580797ac58cSKevin Wolf 15813a691c50SMax Reitz ret = blk_truncate(blk, offset, PREALLOC_MODE_OFF, &local_err); 1582797ac58cSKevin Wolf if (ret < 0) { 1583ed3d2ec9SMax Reitz error_report_err(local_err); 1584797ac58cSKevin Wolf return 0; 1585797ac58cSKevin Wolf } 1586797ac58cSKevin Wolf 1587797ac58cSKevin Wolf return 0; 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 16014c7b7e9bSMax Reitz static int 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)); 1609797ac58cSKevin Wolf return 0; 1610797ac58cSKevin Wolf } 1611797ac58cSKevin Wolf 1612797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1613797ac58cSKevin Wolf printf("%s\n", s1); 1614797ac58cSKevin Wolf return 0; 1615797ac58cSKevin Wolf } 1616797ac58cSKevin Wolf 1617797ac58cSKevin Wolf 1618797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1619797ac58cSKevin Wolf .name = "length", 1620797ac58cSKevin Wolf .altname = "l", 1621797ac58cSKevin Wolf .cfunc = length_f, 1622797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1623797ac58cSKevin Wolf }; 1624797ac58cSKevin Wolf 1625797ac58cSKevin Wolf 16264c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1627797ac58cSKevin Wolf { 16284c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1629797ac58cSKevin Wolf BlockDriverInfo bdi; 1630a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1631797ac58cSKevin Wolf char s1[64], s2[64]; 1632797ac58cSKevin Wolf int ret; 1633797ac58cSKevin Wolf 1634797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1635797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1636797ac58cSKevin Wolf } 1637797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1638797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1639797ac58cSKevin Wolf } 1640797ac58cSKevin Wolf 1641797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1642797ac58cSKevin Wolf if (ret) { 1643797ac58cSKevin Wolf return 0; 1644797ac58cSKevin Wolf } 1645797ac58cSKevin Wolf 1646797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1647797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1648797ac58cSKevin Wolf 1649797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1650797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1651797ac58cSKevin Wolf 1652a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1653a8d8ecb7SMax Reitz if (spec_info) { 1654a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1655a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1656a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1657a8d8ecb7SMax Reitz } 1658a8d8ecb7SMax Reitz 1659797ac58cSKevin Wolf return 0; 1660797ac58cSKevin Wolf } 1661797ac58cSKevin Wolf 1662797ac58cSKevin Wolf 1663797ac58cSKevin Wolf 1664797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1665797ac58cSKevin Wolf .name = "info", 1666797ac58cSKevin Wolf .altname = "i", 1667797ac58cSKevin Wolf .cfunc = info_f, 1668797ac58cSKevin Wolf .oneline = "prints information about the current file", 1669797ac58cSKevin Wolf }; 1670797ac58cSKevin Wolf 1671797ac58cSKevin Wolf static void discard_help(void) 1672797ac58cSKevin Wolf { 1673797ac58cSKevin Wolf printf( 1674797ac58cSKevin Wolf "\n" 1675797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1676797ac58cSKevin Wolf "\n" 1677797ac58cSKevin Wolf " Example:\n" 1678797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1679797ac58cSKevin Wolf "\n" 1680797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1681797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1682797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1683797ac58cSKevin Wolf "\n"); 1684797ac58cSKevin Wolf } 1685797ac58cSKevin Wolf 16864c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1687797ac58cSKevin Wolf 1688797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1689797ac58cSKevin Wolf .name = "discard", 1690797ac58cSKevin Wolf .altname = "d", 1691797ac58cSKevin Wolf .cfunc = discard_f, 1692887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1693797ac58cSKevin Wolf .argmin = 2, 1694797ac58cSKevin Wolf .argmax = -1, 1695797ac58cSKevin Wolf .args = "[-Cq] off len", 1696797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1697797ac58cSKevin Wolf .help = discard_help, 1698797ac58cSKevin Wolf }; 1699797ac58cSKevin Wolf 17004c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1701797ac58cSKevin Wolf { 1702797ac58cSKevin Wolf struct timeval t1, t2; 1703dc38852aSEric Blake bool Cflag = false, qflag = false; 1704797ac58cSKevin Wolf int c, ret; 1705f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1706797ac58cSKevin Wolf 1707b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1708797ac58cSKevin Wolf switch (c) { 1709797ac58cSKevin Wolf case 'C': 1710dc38852aSEric Blake Cflag = true; 1711797ac58cSKevin Wolf break; 1712797ac58cSKevin Wolf case 'q': 1713dc38852aSEric Blake qflag = true; 1714797ac58cSKevin Wolf break; 1715797ac58cSKevin Wolf default: 1716c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1717797ac58cSKevin Wolf } 1718797ac58cSKevin Wolf } 1719797ac58cSKevin Wolf 1720797ac58cSKevin Wolf if (optind != argc - 2) { 1721c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1722797ac58cSKevin Wolf } 1723797ac58cSKevin Wolf 1724797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1725797ac58cSKevin Wolf if (offset < 0) { 1726a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1727797ac58cSKevin Wolf return 0; 1728797ac58cSKevin Wolf } 1729797ac58cSKevin Wolf 1730797ac58cSKevin Wolf optind++; 1731f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1732f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1733f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1734797ac58cSKevin Wolf return 0; 1735f5a5ca79SManos Pitsidianakis } else if (bytes >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) { 17369b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 1737a3674679SMax Reitz (uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS, 17389b0beaf3SJohn Snow argv[optind]); 17399b0beaf3SJohn Snow return 0; 1740797ac58cSKevin Wolf } 1741797ac58cSKevin Wolf 1742797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1743f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 1744797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1745797ac58cSKevin Wolf 1746797ac58cSKevin Wolf if (ret < 0) { 1747797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1748797ac58cSKevin Wolf goto out; 1749797ac58cSKevin Wolf } 1750797ac58cSKevin Wolf 1751797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1752797ac58cSKevin Wolf if (!qflag) { 1753797ac58cSKevin Wolf t2 = tsub(t2, t1); 1754f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1755797ac58cSKevin Wolf } 1756797ac58cSKevin Wolf 1757797ac58cSKevin Wolf out: 1758797ac58cSKevin Wolf return 0; 1759797ac58cSKevin Wolf } 1760797ac58cSKevin Wolf 17614c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1762797ac58cSKevin Wolf { 17634c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1764d6a644bbSEric Blake int64_t offset, start, remaining, count; 1765797ac58cSKevin Wolf char s1[64]; 1766d6a644bbSEric Blake int ret; 1767d6a644bbSEric Blake int64_t num, sum_alloc; 1768797ac58cSKevin Wolf 1769d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1770797ac58cSKevin Wolf if (offset < 0) { 1771a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1772797ac58cSKevin Wolf return 0; 1773797ac58cSKevin Wolf } 1774797ac58cSKevin Wolf 1775797ac58cSKevin Wolf if (argc == 3) { 17764401fdc7SEric Blake count = cvtnum(argv[2]); 17774401fdc7SEric Blake if (count < 0) { 17784401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1779797ac58cSKevin Wolf return 0; 1780797ac58cSKevin Wolf } 1781797ac58cSKevin Wolf } else { 17824401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1783797ac58cSKevin Wolf } 1784797ac58cSKevin Wolf 1785d6a644bbSEric Blake remaining = count; 1786797ac58cSKevin Wolf sum_alloc = 0; 1787797ac58cSKevin Wolf while (remaining) { 1788d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1789d663640cSPaolo Bonzini if (ret < 0) { 1790d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1791d663640cSPaolo Bonzini return 0; 1792d663640cSPaolo Bonzini } 1793d6a644bbSEric Blake offset += num; 1794797ac58cSKevin Wolf remaining -= num; 1795797ac58cSKevin Wolf if (ret) { 1796797ac58cSKevin Wolf sum_alloc += num; 1797797ac58cSKevin Wolf } 1798797ac58cSKevin Wolf if (num == 0) { 1799d6a644bbSEric Blake count -= remaining; 1800797ac58cSKevin Wolf remaining = 0; 1801797ac58cSKevin Wolf } 1802797ac58cSKevin Wolf } 1803797ac58cSKevin Wolf 1804d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1805797ac58cSKevin Wolf 18064401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1807d6a644bbSEric Blake sum_alloc, count, s1); 1808797ac58cSKevin Wolf return 0; 1809797ac58cSKevin Wolf } 1810797ac58cSKevin Wolf 1811797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1812797ac58cSKevin Wolf .name = "alloc", 1813797ac58cSKevin Wolf .altname = "a", 1814797ac58cSKevin Wolf .argmin = 1, 1815797ac58cSKevin Wolf .argmax = 2, 1816797ac58cSKevin Wolf .cfunc = alloc_f, 18174401fdc7SEric Blake .args = "offset [count]", 18184401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1819797ac58cSKevin Wolf }; 1820797ac58cSKevin Wolf 1821797ac58cSKevin Wolf 1822d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1823d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1824797ac58cSKevin Wolf { 1825d6a644bbSEric Blake int64_t num; 1826d6a644bbSEric Blake int num_checked; 1827797ac58cSKevin Wolf int ret, firstret; 1828797ac58cSKevin Wolf 1829d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1830d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 1831797ac58cSKevin Wolf if (ret < 0) { 1832797ac58cSKevin Wolf return ret; 1833797ac58cSKevin Wolf } 1834797ac58cSKevin Wolf 1835797ac58cSKevin Wolf firstret = ret; 1836797ac58cSKevin Wolf *pnum = num; 1837797ac58cSKevin Wolf 1838d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1839d6a644bbSEric Blake offset += num; 1840d6a644bbSEric Blake bytes -= num; 1841797ac58cSKevin Wolf 1842d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1843d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 18444b25bbc4SMax Reitz if (ret == firstret && num) { 1845797ac58cSKevin Wolf *pnum += num; 1846797ac58cSKevin Wolf } else { 1847797ac58cSKevin Wolf break; 1848797ac58cSKevin Wolf } 1849797ac58cSKevin Wolf } 1850797ac58cSKevin Wolf 1851797ac58cSKevin Wolf return firstret; 1852797ac58cSKevin Wolf } 1853797ac58cSKevin Wolf 18544c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1855797ac58cSKevin Wolf { 1856d6a644bbSEric Blake int64_t offset, bytes; 18576f3c90afSEric Blake char s1[64], s2[64]; 1858797ac58cSKevin Wolf int64_t num; 1859797ac58cSKevin Wolf int ret; 1860797ac58cSKevin Wolf const char *retstr; 1861797ac58cSKevin Wolf 1862797ac58cSKevin Wolf offset = 0; 1863d6a644bbSEric Blake bytes = blk_getlength(blk); 1864d6a644bbSEric Blake if (bytes < 0) { 1865d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 18664c7b7e9bSMax Reitz return 0; 18674c7b7e9bSMax Reitz } 18684c7b7e9bSMax Reitz 1869d6a644bbSEric Blake while (bytes) { 1870d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 1871797ac58cSKevin Wolf if (ret < 0) { 1872797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1873797ac58cSKevin Wolf return 0; 18744b25bbc4SMax Reitz } else if (!num) { 18754b25bbc4SMax Reitz error_report("Unexpected end of image"); 18764b25bbc4SMax Reitz return 0; 1877797ac58cSKevin Wolf } 1878797ac58cSKevin Wolf 1879797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1880d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 1881d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 18826f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 1883d6a644bbSEric Blake s1, num, retstr, s2, offset); 1884797ac58cSKevin Wolf 1885797ac58cSKevin Wolf offset += num; 1886d6a644bbSEric Blake bytes -= num; 1887d6a644bbSEric Blake } 1888797ac58cSKevin Wolf 1889797ac58cSKevin Wolf return 0; 1890797ac58cSKevin Wolf } 1891797ac58cSKevin Wolf 1892797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1893797ac58cSKevin Wolf .name = "map", 1894797ac58cSKevin Wolf .argmin = 0, 1895797ac58cSKevin Wolf .argmax = 0, 1896797ac58cSKevin Wolf .cfunc = map_f, 1897797ac58cSKevin Wolf .args = "", 1898797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1899797ac58cSKevin Wolf }; 1900797ac58cSKevin Wolf 19015bbd2e59SKevin Wolf static void reopen_help(void) 19025bbd2e59SKevin Wolf { 19035bbd2e59SKevin Wolf printf( 19045bbd2e59SKevin Wolf "\n" 19055bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 19065bbd2e59SKevin Wolf "\n" 19075bbd2e59SKevin Wolf " Example:\n" 19085bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 19095bbd2e59SKevin Wolf "\n" 19105bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 1911ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 19125bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 19135bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 19145bbd2e59SKevin Wolf "\n"); 19155bbd2e59SKevin Wolf } 19165bbd2e59SKevin Wolf 19175bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 19185bbd2e59SKevin Wolf 19195bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 19205bbd2e59SKevin Wolf .name = "reopen", 19215bbd2e59SKevin Wolf .merge_lists = true, 19225bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 19235bbd2e59SKevin Wolf .desc = { 19245bbd2e59SKevin Wolf /* no elements => accept any params */ 19255bbd2e59SKevin Wolf { /* end of list */ } 19265bbd2e59SKevin Wolf }, 19275bbd2e59SKevin Wolf }; 19285bbd2e59SKevin Wolf 19295bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19305bbd2e59SKevin Wolf .name = "reopen", 19315bbd2e59SKevin Wolf .argmin = 0, 19325bbd2e59SKevin Wolf .argmax = -1, 19335bbd2e59SKevin Wolf .cfunc = reopen_f, 1934ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 19355bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19365bbd2e59SKevin Wolf .help = reopen_help, 19375bbd2e59SKevin Wolf }; 19385bbd2e59SKevin Wolf 19395bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 19405bbd2e59SKevin Wolf { 19415bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19425bbd2e59SKevin Wolf QemuOpts *qopts; 19435bbd2e59SKevin Wolf QDict *opts; 19445bbd2e59SKevin Wolf int c; 19455bbd2e59SKevin Wolf int flags = bs->open_flags; 194619dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 1947ea92203cSKevin Wolf bool has_rw_option = false; 19485bbd2e59SKevin Wolf 19495bbd2e59SKevin Wolf BlockReopenQueue *brq; 19505bbd2e59SKevin Wolf Error *local_err = NULL; 19515bbd2e59SKevin Wolf 1952ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 19535bbd2e59SKevin Wolf switch (c) { 19545bbd2e59SKevin Wolf case 'c': 195519dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 19565bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 19575bbd2e59SKevin Wolf return 0; 19585bbd2e59SKevin Wolf } 19595bbd2e59SKevin Wolf break; 19605bbd2e59SKevin Wolf case 'o': 19615bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 19625bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19635bbd2e59SKevin Wolf return 0; 19645bbd2e59SKevin Wolf } 19655bbd2e59SKevin Wolf break; 19665bbd2e59SKevin Wolf case 'r': 1967ea92203cSKevin Wolf if (has_rw_option) { 1968ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 1969ea92203cSKevin Wolf return 0; 1970ea92203cSKevin Wolf } 19715bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 1972ea92203cSKevin Wolf has_rw_option = true; 1973ea92203cSKevin Wolf break; 1974ea92203cSKevin Wolf case 'w': 1975ea92203cSKevin Wolf if (has_rw_option) { 1976ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 1977ea92203cSKevin Wolf return 0; 1978ea92203cSKevin Wolf } 1979ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 1980ea92203cSKevin Wolf has_rw_option = true; 19815bbd2e59SKevin Wolf break; 19825bbd2e59SKevin Wolf default: 19835bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19845bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19855bbd2e59SKevin Wolf } 19865bbd2e59SKevin Wolf } 19875bbd2e59SKevin Wolf 19885bbd2e59SKevin Wolf if (optind != argc) { 19895bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19905bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19915bbd2e59SKevin Wolf } 19925bbd2e59SKevin Wolf 199319dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 199419dbecdcSKevin Wolf blk_get_attached_dev(blk)) 199519dbecdcSKevin Wolf { 199619dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 199719dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 199819dbecdcSKevin Wolf return 0; 199919dbecdcSKevin Wolf } 200019dbecdcSKevin Wolf 2001f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2002f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2003f3adefb2SKevin Wolf 2004f3adefb2SKevin Wolf bdrv_drain(bs); 2005f3adefb2SKevin Wolf 2006f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2007f3adefb2SKevin Wolf blk_set_perm(blk, 2008f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2009f3adefb2SKevin Wolf orig_shared_perm, 2010f3adefb2SKevin Wolf &error_abort); 2011f3adefb2SKevin Wolf } 2012f3adefb2SKevin Wolf 20135bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 20145bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 20155bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 20165bbd2e59SKevin Wolf 20171a63a907SKevin Wolf bdrv_subtree_drained_begin(bs); 20185bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 2019720150f3SPaolo Bonzini bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err); 20201a63a907SKevin Wolf bdrv_subtree_drained_end(bs); 20211a63a907SKevin Wolf 20225bbd2e59SKevin Wolf if (local_err) { 20235bbd2e59SKevin Wolf error_report_err(local_err); 202419dbecdcSKevin Wolf } else { 202519dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 20265bbd2e59SKevin Wolf } 20275bbd2e59SKevin Wolf 20285bbd2e59SKevin Wolf return 0; 20295bbd2e59SKevin Wolf } 20305bbd2e59SKevin Wolf 20314c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2032797ac58cSKevin Wolf { 2033797ac58cSKevin Wolf int ret; 2034797ac58cSKevin Wolf 20354c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2036797ac58cSKevin Wolf if (ret < 0) { 2037797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2038797ac58cSKevin Wolf } 2039797ac58cSKevin Wolf 2040797ac58cSKevin Wolf return 0; 2041797ac58cSKevin Wolf } 2042797ac58cSKevin Wolf 20434c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 20444cc70e93SFam Zheng { 20454cc70e93SFam Zheng int ret; 20464cc70e93SFam Zheng 20474c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 20484cc70e93SFam Zheng if (ret < 0) { 20494cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 20504cc70e93SFam Zheng } 20514cc70e93SFam Zheng 20524cc70e93SFam Zheng return 0; 20534cc70e93SFam Zheng } 20544cc70e93SFam Zheng 2055797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2056797ac58cSKevin Wolf .name = "break", 2057797ac58cSKevin Wolf .argmin = 2, 2058797ac58cSKevin Wolf .argmax = 2, 2059797ac58cSKevin Wolf .cfunc = break_f, 2060797ac58cSKevin Wolf .args = "event tag", 2061797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2062797ac58cSKevin Wolf "request as tag", 2063797ac58cSKevin Wolf }; 2064797ac58cSKevin Wolf 20654cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 20664cc70e93SFam Zheng .name = "remove_break", 20674cc70e93SFam Zheng .argmin = 1, 20684cc70e93SFam Zheng .argmax = 1, 20694cc70e93SFam Zheng .cfunc = remove_break_f, 20704cc70e93SFam Zheng .args = "tag", 20714cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 20724cc70e93SFam Zheng }; 20734cc70e93SFam Zheng 20744c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2075797ac58cSKevin Wolf { 2076797ac58cSKevin Wolf int ret; 2077797ac58cSKevin Wolf 20784c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2079797ac58cSKevin Wolf if (ret < 0) { 2080797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2081797ac58cSKevin Wolf } 2082797ac58cSKevin Wolf 2083797ac58cSKevin Wolf return 0; 2084797ac58cSKevin Wolf } 2085797ac58cSKevin Wolf 2086797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2087797ac58cSKevin Wolf .name = "resume", 2088797ac58cSKevin Wolf .argmin = 1, 2089797ac58cSKevin Wolf .argmax = 1, 2090797ac58cSKevin Wolf .cfunc = resume_f, 2091797ac58cSKevin Wolf .args = "tag", 2092797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2093797ac58cSKevin Wolf }; 2094797ac58cSKevin Wolf 20954c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2096797ac58cSKevin Wolf { 20974c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 20984c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2099797ac58cSKevin Wolf } 2100797ac58cSKevin Wolf 2101797ac58cSKevin Wolf return 0; 2102797ac58cSKevin Wolf } 2103797ac58cSKevin Wolf 2104797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2105797ac58cSKevin Wolf .name = "wait_break", 2106797ac58cSKevin Wolf .argmin = 1, 2107797ac58cSKevin Wolf .argmax = 1, 2108797ac58cSKevin Wolf .cfunc = wait_break_f, 2109797ac58cSKevin Wolf .args = "tag", 2110797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2111797ac58cSKevin Wolf }; 2112797ac58cSKevin Wolf 21134c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2114797ac58cSKevin Wolf { 2115797ac58cSKevin Wolf abort(); 2116797ac58cSKevin Wolf } 2117797ac58cSKevin Wolf 2118797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2119797ac58cSKevin Wolf .name = "abort", 2120797ac58cSKevin Wolf .cfunc = abort_f, 2121797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2122797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2123797ac58cSKevin Wolf }; 2124797ac58cSKevin Wolf 21250e82dc7bSMax Reitz static void sigraise_help(void) 21260e82dc7bSMax Reitz { 21270e82dc7bSMax Reitz printf( 21280e82dc7bSMax Reitz "\n" 21290e82dc7bSMax Reitz " raises the given signal\n" 21300e82dc7bSMax Reitz "\n" 21310e82dc7bSMax Reitz " Example:\n" 21320e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 21330e82dc7bSMax Reitz "\n" 21340e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 21350e82dc7bSMax Reitz " given to sigraise.\n" 21360e82dc7bSMax Reitz "\n", SIGTERM); 21370e82dc7bSMax Reitz } 21380e82dc7bSMax Reitz 21394c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 21400e82dc7bSMax Reitz 21410e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 21420e82dc7bSMax Reitz .name = "sigraise", 21430e82dc7bSMax Reitz .cfunc = sigraise_f, 21440e82dc7bSMax Reitz .argmin = 1, 21450e82dc7bSMax Reitz .argmax = 1, 21460e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 21470e82dc7bSMax Reitz .args = "signal", 21480e82dc7bSMax Reitz .oneline = "raises a signal", 21490e82dc7bSMax Reitz .help = sigraise_help, 21500e82dc7bSMax Reitz }; 21510e82dc7bSMax Reitz 21524c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 21530e82dc7bSMax Reitz { 21549b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 21550e82dc7bSMax Reitz if (sig < 0) { 2156a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 21570e82dc7bSMax Reitz return 0; 21589b0beaf3SJohn Snow } else if (sig > NSIG) { 21599b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 21609b0beaf3SJohn Snow argv[1]); 21619b0beaf3SJohn Snow return 0; 21620e82dc7bSMax Reitz } 21630e82dc7bSMax Reitz 21640e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 21650e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 21660e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 21670e82dc7bSMax Reitz fflush(stdout); 21680e82dc7bSMax Reitz fflush(stderr); 21690e82dc7bSMax Reitz 21700e82dc7bSMax Reitz raise(sig); 21710e82dc7bSMax Reitz return 0; 21720e82dc7bSMax Reitz } 21730e82dc7bSMax Reitz 2174cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2175cd33d02aSKevin Wolf { 2176cd33d02aSKevin Wolf bool *expired = opaque; 2177cd33d02aSKevin Wolf *expired = true; 2178cd33d02aSKevin Wolf } 2179cd33d02aSKevin Wolf 21804c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2181cd33d02aSKevin Wolf { 2182cd33d02aSKevin Wolf char *endptr; 2183cd33d02aSKevin Wolf long ms; 2184cd33d02aSKevin Wolf struct QEMUTimer *timer; 2185cd33d02aSKevin Wolf bool expired = false; 2186cd33d02aSKevin Wolf 2187cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2188cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2189cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2190cd33d02aSKevin Wolf return 0; 2191cd33d02aSKevin Wolf } 2192cd33d02aSKevin Wolf 2193cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2194cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2195cd33d02aSKevin Wolf 2196cd33d02aSKevin Wolf while (!expired) { 2197cd33d02aSKevin Wolf main_loop_wait(false); 2198cd33d02aSKevin Wolf } 2199cd33d02aSKevin Wolf 2200cd33d02aSKevin Wolf timer_free(timer); 2201cd33d02aSKevin Wolf 2202cd33d02aSKevin Wolf return 0; 2203cd33d02aSKevin Wolf } 2204cd33d02aSKevin Wolf 2205cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2206cd33d02aSKevin Wolf .name = "sleep", 2207cd33d02aSKevin Wolf .argmin = 1, 2208cd33d02aSKevin Wolf .argmax = 1, 2209cd33d02aSKevin Wolf .cfunc = sleep_f, 2210cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2211cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2212cd33d02aSKevin Wolf }; 2213cd33d02aSKevin Wolf 2214f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2215f18a834aSKevin Wolf { 2216f18a834aSKevin Wolf if (cmd) { 2217f18a834aSKevin Wolf printf("%s ", cmd); 2218f18a834aSKevin Wolf } else { 2219f18a834aSKevin Wolf printf("%s ", ct->name); 2220f18a834aSKevin Wolf if (ct->altname) { 2221f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2222f18a834aSKevin Wolf } 2223f18a834aSKevin Wolf } 2224f18a834aSKevin Wolf 2225f18a834aSKevin Wolf if (ct->args) { 2226f18a834aSKevin Wolf printf("%s ", ct->args); 2227f18a834aSKevin Wolf } 2228f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2229f18a834aSKevin Wolf } 2230f18a834aSKevin Wolf 2231f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2232f18a834aSKevin Wolf { 2233f18a834aSKevin Wolf help_oneline(cmd, ct); 2234f18a834aSKevin Wolf if (ct->help) { 2235f18a834aSKevin Wolf ct->help(); 2236f18a834aSKevin Wolf } 2237f18a834aSKevin Wolf } 2238f18a834aSKevin Wolf 2239f18a834aSKevin Wolf static void help_all(void) 2240f18a834aSKevin Wolf { 2241f18a834aSKevin Wolf const cmdinfo_t *ct; 2242f18a834aSKevin Wolf 2243f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2244f18a834aSKevin Wolf help_oneline(ct->name, ct); 2245f18a834aSKevin Wolf } 2246f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2247f18a834aSKevin Wolf } 2248f18a834aSKevin Wolf 22494c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2250f18a834aSKevin Wolf { 2251f18a834aSKevin Wolf const cmdinfo_t *ct; 2252f18a834aSKevin Wolf 2253f18a834aSKevin Wolf if (argc == 1) { 2254f18a834aSKevin Wolf help_all(); 2255f18a834aSKevin Wolf return 0; 2256f18a834aSKevin Wolf } 2257f18a834aSKevin Wolf 2258f18a834aSKevin Wolf ct = find_command(argv[1]); 2259f18a834aSKevin Wolf if (ct == NULL) { 2260f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2261f18a834aSKevin Wolf return 0; 2262f18a834aSKevin Wolf } 2263f18a834aSKevin Wolf 2264f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2265f18a834aSKevin Wolf return 0; 2266f18a834aSKevin Wolf } 2267f18a834aSKevin Wolf 2268f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2269f18a834aSKevin Wolf .name = "help", 2270f18a834aSKevin Wolf .altname = "?", 2271f18a834aSKevin Wolf .cfunc = help_f, 2272f18a834aSKevin Wolf .argmin = 0, 2273f18a834aSKevin Wolf .argmax = 1, 2274f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2275f18a834aSKevin Wolf .args = "[command]", 2276f18a834aSKevin Wolf .oneline = "help for one or all commands", 2277f18a834aSKevin Wolf }; 2278f18a834aSKevin Wolf 22794c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2280dd583296SKevin Wolf { 228115afd94aSPaolo Bonzini AioContext *ctx; 2282dd583296SKevin Wolf char *input; 2283dd583296SKevin Wolf const cmdinfo_t *ct; 2284dd583296SKevin Wolf char **v; 2285dd583296SKevin Wolf int c; 2286dd583296SKevin Wolf bool done = false; 2287dd583296SKevin Wolf 2288dd583296SKevin Wolf input = g_strdup(cmd); 2289dd583296SKevin Wolf v = breakline(input, &c); 2290dd583296SKevin Wolf if (c) { 2291dd583296SKevin Wolf ct = find_command(v[0]); 2292dd583296SKevin Wolf if (ct) { 229315afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 229415afd94aSPaolo Bonzini aio_context_acquire(ctx); 22954c7b7e9bSMax Reitz done = command(blk, ct, c, v); 229615afd94aSPaolo Bonzini aio_context_release(ctx); 2297dd583296SKevin Wolf } else { 2298dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2299dd583296SKevin Wolf } 2300dd583296SKevin Wolf } 2301dd583296SKevin Wolf g_free(input); 2302dd583296SKevin Wolf g_free(v); 2303dd583296SKevin Wolf 2304dd583296SKevin Wolf return done; 2305dd583296SKevin Wolf } 2306dd583296SKevin Wolf 2307797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2308797ac58cSKevin Wolf { 2309797ac58cSKevin Wolf /* initialize commands */ 2310c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2311c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2312c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2313c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2314c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2315c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2316c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2317c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2318c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2319c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2320c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2321c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2322c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2323c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2324c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 23255bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2326c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 23274cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2328c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2329c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2330c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2331cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 23320e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2333797ac58cSKevin Wolf } 2334