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" 13dc900c35SAlberto Garcia #include "qapi/qmp/qdict.h" 143d21994fSKevin Wolf #include "qemu-io.h" 154c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 164c7b7e9bSMax Reitz #include "block/block.h" 174c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 18a8d8ecb7SMax Reitz #include "block/qapi.h" 19d49b6836SMarkus Armbruster #include "qemu/error-report.h" 206a1751b7SAlex Bligh #include "qemu/main-loop.h" 21922a01a0SMarkus Armbruster #include "qemu/option.h" 22cd33d02aSKevin Wolf #include "qemu/timer.h" 23f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 24797ac58cSKevin Wolf 25797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 26797ac58cSKevin Wolf 27f9883880SStefan Weil bool qemuio_misalign; 28797ac58cSKevin Wolf 29c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 30c2cdf5c5SKevin Wolf static int ncmds; 31c2cdf5c5SKevin Wolf 32c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 33c2cdf5c5SKevin Wolf { 34c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 35c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 36c2cdf5c5SKevin Wolf } 37c2cdf5c5SKevin Wolf 38c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 39c2cdf5c5SKevin Wolf { 406aabeb58SPeter Maydell /* ci->perm assumes a file is open, but the GLOBAL and NOFILE_OK 416aabeb58SPeter Maydell * flags allow it not to be, so that combination is invalid. 426aabeb58SPeter Maydell * Catch it now rather than letting it manifest as a crash if a 436aabeb58SPeter Maydell * particular set of command line options are used. 446aabeb58SPeter Maydell */ 456aabeb58SPeter Maydell assert(ci->perm == 0 || 466aabeb58SPeter Maydell (ci->flags & (CMD_FLAG_GLOBAL | CMD_NOFILE_OK)) == 0); 4702c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 48c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 49c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 50c2cdf5c5SKevin Wolf } 51c2cdf5c5SKevin Wolf 52b444d0e9SMax Reitz void qemuio_command_usage(const cmdinfo_t *ci) 53c2cdf5c5SKevin Wolf { 54c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 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 69b32d7a39SMax 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)) { 75b32d7a39SMax Reitz return -EINVAL; 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 } 92b32d7a39SMax Reitz return -EINVAL; 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); 112b32d7a39SMax Reitz return ret; 113887354bdSKevin Wolf } 114887354bdSKevin Wolf } 115887354bdSKevin Wolf } 116887354bdSKevin Wolf 117d339d766SRichard W.M. Jones qemu_reset_optind(); 118b32d7a39SMax 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 251*50290c00SAlex Bennée static struct timespec tsub(struct timespec t1, struct timespec t2) 2520b613881SKevin Wolf { 253*50290c00SAlex Bennée t1.tv_nsec -= t2.tv_nsec; 254*50290c00SAlex Bennée if (t1.tv_nsec < 0) { 255*50290c00SAlex Bennée t1.tv_nsec += NANOSECONDS_PER_SECOND; 2560b613881SKevin Wolf t1.tv_sec--; 2570b613881SKevin Wolf } 2580b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2590b613881SKevin Wolf return t1; 2600b613881SKevin Wolf } 2610b613881SKevin Wolf 262*50290c00SAlex Bennée static double tdiv(double value, struct timespec tv) 2630b613881SKevin Wolf { 264*50290c00SAlex Bennée double seconds = tv.tv_sec + (tv.tv_nsec / 1e9); 265*50290c00SAlex Bennée return value / seconds; 2660b613881SKevin Wolf } 2670b613881SKevin Wolf 2680b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2690b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2700b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2710b613881SKevin Wolf 2720b613881SKevin Wolf enum { 2730b613881SKevin Wolf DEFAULT_TIME = 0x0, 2740b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2750b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2760b613881SKevin Wolf }; 2770b613881SKevin Wolf 278*50290c00SAlex Bennée static void timestr(struct timespec *tv, char *ts, size_t size, int format) 2790b613881SKevin Wolf { 280*50290c00SAlex Bennée double frac_sec = tv->tv_nsec / 1e9; 2810b613881SKevin Wolf 2820b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2830b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 284*50290c00SAlex Bennée snprintf(ts, size, "%u:%05.2f", 2850b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 286*50290c00SAlex Bennée SECONDS(tv->tv_sec) + frac_sec); 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) { 293*50290c00SAlex Bennée snprintf(ts, size, "%u:%02u:%05.2f", 2940b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2950b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 296*50290c00SAlex Bennée SECONDS(tv->tv_sec) + frac_sec); 2970b613881SKevin Wolf } else { 298*50290c00SAlex Bennée snprintf(ts, size, "%05.2f sec", frac_sec); 2990b613881SKevin Wolf } 3000b613881SKevin Wolf } 3010b613881SKevin Wolf 302797ac58cSKevin Wolf /* 303797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 304797ac58cSKevin Wolf * 305797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 306797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 307797ac58cSKevin Wolf */ 308797ac58cSKevin Wolf static int parse_pattern(const char *arg) 309797ac58cSKevin Wolf { 310797ac58cSKevin Wolf char *endptr = NULL; 311797ac58cSKevin Wolf long pattern; 312797ac58cSKevin Wolf 313797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 314797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 315797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 316797ac58cSKevin Wolf return -1; 317797ac58cSKevin Wolf } 318797ac58cSKevin Wolf 319797ac58cSKevin Wolf return pattern; 320797ac58cSKevin Wolf } 321797ac58cSKevin Wolf 322797ac58cSKevin Wolf /* 323797ac58cSKevin Wolf * Memory allocation helpers. 324797ac58cSKevin Wolf * 325797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 326797ac58cSKevin Wolf * that is specified on the command line. 327797ac58cSKevin Wolf */ 328797ac58cSKevin Wolf 329797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3304c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 331797ac58cSKevin Wolf { 332797ac58cSKevin Wolf void *buf; 333797ac58cSKevin Wolf 334797ac58cSKevin Wolf if (qemuio_misalign) { 335797ac58cSKevin Wolf len += MISALIGN_OFFSET; 336797ac58cSKevin Wolf } 3374c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 338797ac58cSKevin Wolf memset(buf, pattern, len); 339797ac58cSKevin Wolf if (qemuio_misalign) { 340797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 341797ac58cSKevin Wolf } 342797ac58cSKevin Wolf return buf; 343797ac58cSKevin Wolf } 344797ac58cSKevin Wolf 345797ac58cSKevin Wolf static void qemu_io_free(void *p) 346797ac58cSKevin Wolf { 347797ac58cSKevin Wolf if (qemuio_misalign) { 348797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 349797ac58cSKevin Wolf } 350797ac58cSKevin Wolf qemu_vfree(p); 351797ac58cSKevin Wolf } 352797ac58cSKevin Wolf 3539b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 354797ac58cSKevin Wolf { 3559b0beaf3SJohn Snow uint64_t i; 3569b0beaf3SJohn Snow int j; 357797ac58cSKevin Wolf const uint8_t *p; 358797ac58cSKevin Wolf 359797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 360797ac58cSKevin Wolf const uint8_t *s = p; 361797ac58cSKevin Wolf 362797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 363797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 364797ac58cSKevin Wolf printf("%02x ", *p); 365797ac58cSKevin Wolf } 366797ac58cSKevin Wolf printf(" "); 367797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 368797ac58cSKevin Wolf if (isalnum(*s)) { 369797ac58cSKevin Wolf printf("%c", *s); 370797ac58cSKevin Wolf } else { 371797ac58cSKevin Wolf printf("."); 372797ac58cSKevin Wolf } 373797ac58cSKevin Wolf } 374797ac58cSKevin Wolf printf("\n"); 375797ac58cSKevin Wolf } 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf 378*50290c00SAlex Bennée static void print_report(const char *op, struct timespec *t, int64_t offset, 379dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 380797ac58cSKevin Wolf { 381797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 382797ac58cSKevin Wolf 383797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 384797ac58cSKevin Wolf if (!Cflag) { 385797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 386797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3879b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 388797ac58cSKevin Wolf op, total, count, offset); 389797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 390797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 391797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3929b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 393797ac58cSKevin Wolf total, cnt, ts, 394797ac58cSKevin Wolf tdiv((double)total, *t), 395797ac58cSKevin Wolf tdiv((double)cnt, *t)); 396797ac58cSKevin Wolf } 397797ac58cSKevin Wolf } 398797ac58cSKevin Wolf 399797ac58cSKevin Wolf /* 400797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 401797ac58cSKevin Wolf * vector matching it. 402797ac58cSKevin Wolf */ 403797ac58cSKevin Wolf static void * 4044c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 405797ac58cSKevin Wolf int pattern) 406797ac58cSKevin Wolf { 407797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 408797ac58cSKevin Wolf size_t count = 0; 409797ac58cSKevin Wolf void *buf = NULL; 410797ac58cSKevin Wolf void *p; 411797ac58cSKevin Wolf int i; 412797ac58cSKevin Wolf 413797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 414797ac58cSKevin Wolf char *arg = argv[i]; 415797ac58cSKevin Wolf int64_t len; 416797ac58cSKevin Wolf 417797ac58cSKevin Wolf len = cvtnum(arg); 418797ac58cSKevin Wolf if (len < 0) { 419a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 420797ac58cSKevin Wolf goto fail; 421797ac58cSKevin Wolf } 422797ac58cSKevin Wolf 4233026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 4243026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 4253026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 4263026c468SAlberto Garcia goto fail; 4273026c468SAlberto Garcia } 4283026c468SAlberto Garcia 4293026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 4303026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 4313026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 432797ac58cSKevin Wolf goto fail; 433797ac58cSKevin Wolf } 434797ac58cSKevin Wolf 435797ac58cSKevin Wolf sizes[i] = len; 436797ac58cSKevin Wolf count += len; 437797ac58cSKevin Wolf } 438797ac58cSKevin Wolf 439797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 440797ac58cSKevin Wolf 4414c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 442797ac58cSKevin Wolf 443797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 444797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 445797ac58cSKevin Wolf p += sizes[i]; 446797ac58cSKevin Wolf } 447797ac58cSKevin Wolf 448797ac58cSKevin Wolf fail: 449797ac58cSKevin Wolf g_free(sizes); 450797ac58cSKevin Wolf return buf; 451797ac58cSKevin Wolf } 452797ac58cSKevin Wolf 4539b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 454f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 455797ac58cSKevin Wolf { 456f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4579b0beaf3SJohn Snow return -ERANGE; 4589b0beaf3SJohn Snow } 4599b0beaf3SJohn Snow 460f5a5ca79SManos Pitsidianakis *total = blk_pread(blk, offset, (uint8_t *)buf, bytes); 461797ac58cSKevin Wolf if (*total < 0) { 462797ac58cSKevin Wolf return *total; 463797ac58cSKevin Wolf } 464797ac58cSKevin Wolf return 1; 465797ac58cSKevin Wolf } 466797ac58cSKevin Wolf 4679b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 468f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 469797ac58cSKevin Wolf { 470f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4719b0beaf3SJohn Snow return -ERANGE; 4729b0beaf3SJohn Snow } 4739b0beaf3SJohn Snow 474f5a5ca79SManos Pitsidianakis *total = blk_pwrite(blk, offset, (uint8_t *)buf, bytes, flags); 475797ac58cSKevin Wolf if (*total < 0) { 476797ac58cSKevin Wolf return *total; 477797ac58cSKevin Wolf } 478797ac58cSKevin Wolf return 1; 479797ac58cSKevin Wolf } 480797ac58cSKevin Wolf 481797ac58cSKevin Wolf typedef struct { 4824c7b7e9bSMax Reitz BlockBackend *blk; 483797ac58cSKevin Wolf int64_t offset; 484f5a5ca79SManos Pitsidianakis int64_t bytes; 4859b0beaf3SJohn Snow int64_t *total; 486770e0e0eSEric Blake int flags; 487797ac58cSKevin Wolf int ret; 488797ac58cSKevin Wolf bool done; 489797ac58cSKevin Wolf } CoWriteZeroes; 490797ac58cSKevin Wolf 491d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 492797ac58cSKevin Wolf { 493797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 494797ac58cSKevin Wolf 495f5a5ca79SManos Pitsidianakis data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->bytes, 496770e0e0eSEric Blake data->flags); 497797ac58cSKevin Wolf data->done = true; 498797ac58cSKevin Wolf if (data->ret < 0) { 499797ac58cSKevin Wolf *data->total = data->ret; 500797ac58cSKevin Wolf return; 501797ac58cSKevin Wolf } 502797ac58cSKevin Wolf 503f5a5ca79SManos Pitsidianakis *data->total = data->bytes; 504797ac58cSKevin Wolf } 505797ac58cSKevin Wolf 506d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 507f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 508797ac58cSKevin Wolf { 509797ac58cSKevin Wolf Coroutine *co; 510797ac58cSKevin Wolf CoWriteZeroes data = { 5114c7b7e9bSMax Reitz .blk = blk, 512797ac58cSKevin Wolf .offset = offset, 513f5a5ca79SManos Pitsidianakis .bytes = bytes, 514797ac58cSKevin Wolf .total = total, 515770e0e0eSEric Blake .flags = flags, 516797ac58cSKevin Wolf .done = false, 517797ac58cSKevin Wolf }; 518797ac58cSKevin Wolf 519f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5209b0beaf3SJohn Snow return -ERANGE; 5219b0beaf3SJohn Snow } 5229b0beaf3SJohn Snow 5230b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 524324ec3e4SFam Zheng bdrv_coroutine_enter(blk_bs(blk), co); 525797ac58cSKevin Wolf while (!data.done) { 5264c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 527797ac58cSKevin Wolf } 528797ac58cSKevin Wolf if (data.ret < 0) { 529797ac58cSKevin Wolf return data.ret; 530797ac58cSKevin Wolf } else { 531797ac58cSKevin Wolf return 1; 532797ac58cSKevin Wolf } 533797ac58cSKevin Wolf } 534797ac58cSKevin Wolf 5354c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 536f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 537797ac58cSKevin Wolf { 538797ac58cSKevin Wolf int ret; 539797ac58cSKevin Wolf 54041ae31e3SAlberto Garcia if (bytes > BDRV_REQUEST_MAX_BYTES) { 5419b0beaf3SJohn Snow return -ERANGE; 5429b0beaf3SJohn Snow } 5439b0beaf3SJohn Snow 544f5a5ca79SManos Pitsidianakis ret = blk_pwrite_compressed(blk, offset, buf, bytes); 545797ac58cSKevin Wolf if (ret < 0) { 546797ac58cSKevin Wolf return ret; 547797ac58cSKevin Wolf } 548f5a5ca79SManos Pitsidianakis *total = bytes; 549797ac58cSKevin Wolf return 1; 550797ac58cSKevin Wolf } 551797ac58cSKevin Wolf 5524c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5539b0beaf3SJohn Snow int64_t count, int64_t *total) 554797ac58cSKevin Wolf { 5559b0beaf3SJohn Snow if (count > INT_MAX) { 5569b0beaf3SJohn Snow return -ERANGE; 5579b0beaf3SJohn Snow } 5589b0beaf3SJohn Snow 5594c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 560797ac58cSKevin Wolf if (*total < 0) { 561797ac58cSKevin Wolf return *total; 562797ac58cSKevin Wolf } 563797ac58cSKevin Wolf return 1; 564797ac58cSKevin Wolf } 565797ac58cSKevin Wolf 5664c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5679b0beaf3SJohn Snow int64_t count, int64_t *total) 568797ac58cSKevin Wolf { 5699b0beaf3SJohn Snow if (count > INT_MAX) { 5709b0beaf3SJohn Snow return -ERANGE; 5719b0beaf3SJohn Snow } 5729b0beaf3SJohn Snow 5734c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 574797ac58cSKevin Wolf if (*total < 0) { 575797ac58cSKevin Wolf return *total; 576797ac58cSKevin Wolf } 577797ac58cSKevin Wolf return 1; 578797ac58cSKevin Wolf } 579797ac58cSKevin Wolf 580797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 581797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 582797ac58cSKevin Wolf { 583797ac58cSKevin Wolf *(int *)opaque = ret; 584797ac58cSKevin Wolf } 585797ac58cSKevin Wolf 5864c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 587797ac58cSKevin Wolf int64_t offset, int *total) 588797ac58cSKevin Wolf { 589797ac58cSKevin Wolf int async_ret = NOT_DONE; 590797ac58cSKevin Wolf 5917b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 592797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 593797ac58cSKevin Wolf main_loop_wait(false); 594797ac58cSKevin Wolf } 595797ac58cSKevin Wolf 596797ac58cSKevin Wolf *total = qiov->size; 597797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 598797ac58cSKevin Wolf } 599797ac58cSKevin Wolf 6004c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 601770e0e0eSEric Blake int64_t offset, int flags, int *total) 602797ac58cSKevin Wolf { 603797ac58cSKevin Wolf int async_ret = NOT_DONE; 604797ac58cSKevin Wolf 605770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 606797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 607797ac58cSKevin Wolf main_loop_wait(false); 608797ac58cSKevin Wolf } 609797ac58cSKevin Wolf 610797ac58cSKevin Wolf *total = qiov->size; 611797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 612797ac58cSKevin Wolf } 613797ac58cSKevin Wolf 614797ac58cSKevin Wolf static void read_help(void) 615797ac58cSKevin Wolf { 616797ac58cSKevin Wolf printf( 617797ac58cSKevin Wolf "\n" 618797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 619797ac58cSKevin Wolf "\n" 620797ac58cSKevin Wolf " Example:\n" 621797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 622797ac58cSKevin Wolf "\n" 623797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 624797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 625797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 626797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 627797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 628093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 629797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 630797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 631797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 632797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 633797ac58cSKevin Wolf "\n"); 634797ac58cSKevin Wolf } 635797ac58cSKevin Wolf 636b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 637797ac58cSKevin Wolf 638797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 639797ac58cSKevin Wolf .name = "read", 640797ac58cSKevin Wolf .altname = "r", 641797ac58cSKevin Wolf .cfunc = read_f, 642797ac58cSKevin Wolf .argmin = 2, 643797ac58cSKevin Wolf .argmax = -1, 644093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 645797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 646797ac58cSKevin Wolf .help = read_help, 647797ac58cSKevin Wolf }; 648797ac58cSKevin Wolf 649b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 650797ac58cSKevin Wolf { 651*50290c00SAlex Bennée struct timespec t1, t2; 652093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 653dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 654b32d7a39SMax Reitz int c, cnt, ret; 655797ac58cSKevin Wolf char *buf; 656797ac58cSKevin Wolf int64_t offset; 6579b0beaf3SJohn Snow int64_t count; 658797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6599b0beaf3SJohn Snow int64_t total = 0; 6609b0beaf3SJohn Snow int pattern = 0; 6619b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 662797ac58cSKevin Wolf 663b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 664797ac58cSKevin Wolf switch (c) { 665797ac58cSKevin Wolf case 'b': 666dc38852aSEric Blake bflag = true; 667797ac58cSKevin Wolf break; 668797ac58cSKevin Wolf case 'C': 669dc38852aSEric Blake Cflag = true; 670797ac58cSKevin Wolf break; 671797ac58cSKevin Wolf case 'l': 672dc38852aSEric Blake lflag = true; 673797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 674797ac58cSKevin Wolf if (pattern_count < 0) { 675a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 676b32d7a39SMax Reitz return pattern_count; 677797ac58cSKevin Wolf } 678797ac58cSKevin Wolf break; 679797ac58cSKevin Wolf case 'p': 680093ea232SEric Blake /* Ignored for backwards compatibility */ 681797ac58cSKevin Wolf break; 682797ac58cSKevin Wolf case 'P': 683dc38852aSEric Blake Pflag = true; 684797ac58cSKevin Wolf pattern = parse_pattern(optarg); 685797ac58cSKevin Wolf if (pattern < 0) { 686b32d7a39SMax Reitz return -EINVAL; 687797ac58cSKevin Wolf } 688797ac58cSKevin Wolf break; 689797ac58cSKevin Wolf case 'q': 690dc38852aSEric Blake qflag = true; 691797ac58cSKevin Wolf break; 692797ac58cSKevin Wolf case 's': 693dc38852aSEric Blake sflag = true; 694797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 695797ac58cSKevin Wolf if (pattern_offset < 0) { 696a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 697b32d7a39SMax Reitz return pattern_offset; 698797ac58cSKevin Wolf } 699797ac58cSKevin Wolf break; 700797ac58cSKevin Wolf case 'v': 701dc38852aSEric Blake vflag = true; 702797ac58cSKevin Wolf break; 703797ac58cSKevin Wolf default: 704b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 705b32d7a39SMax Reitz return -EINVAL; 706797ac58cSKevin Wolf } 707797ac58cSKevin Wolf } 708797ac58cSKevin Wolf 709797ac58cSKevin Wolf if (optind != argc - 2) { 710b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 711b32d7a39SMax Reitz return -EINVAL; 712797ac58cSKevin Wolf } 713797ac58cSKevin Wolf 714797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 715797ac58cSKevin Wolf if (offset < 0) { 716a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 717b32d7a39SMax Reitz return offset; 718797ac58cSKevin Wolf } 719797ac58cSKevin Wolf 720797ac58cSKevin Wolf optind++; 721797ac58cSKevin Wolf count = cvtnum(argv[optind]); 722797ac58cSKevin Wolf if (count < 0) { 723a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 724b32d7a39SMax Reitz return count; 7253026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7269b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7273026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 728b32d7a39SMax Reitz return -EINVAL; 729797ac58cSKevin Wolf } 730797ac58cSKevin Wolf 731797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 732b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 733b32d7a39SMax Reitz return -EINVAL; 734797ac58cSKevin Wolf } 735797ac58cSKevin Wolf 736797ac58cSKevin Wolf if (!lflag) { 737797ac58cSKevin Wolf pattern_count = count - pattern_offset; 738797ac58cSKevin Wolf } 739797ac58cSKevin Wolf 740797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 741797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 742b32d7a39SMax Reitz return -EINVAL; 743797ac58cSKevin Wolf } 744797ac58cSKevin Wolf 745093ea232SEric Blake if (bflag) { 7461bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 7471bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 748797ac58cSKevin Wolf offset); 749b32d7a39SMax Reitz return -EINVAL; 750797ac58cSKevin Wolf } 7511bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 7521bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 753797ac58cSKevin Wolf count); 754b32d7a39SMax Reitz return -EINVAL; 755797ac58cSKevin Wolf } 756797ac58cSKevin Wolf } 757797ac58cSKevin Wolf 7584c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 759797ac58cSKevin Wolf 760*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 7617b3f9712SEric Blake if (bflag) { 762b32d7a39SMax Reitz ret = do_load_vmstate(blk, buf, offset, count, &total); 763797ac58cSKevin Wolf } else { 764b32d7a39SMax Reitz ret = do_pread(blk, buf, offset, count, &total); 765797ac58cSKevin Wolf } 766*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 767797ac58cSKevin Wolf 768b32d7a39SMax Reitz if (ret < 0) { 769b32d7a39SMax Reitz printf("read failed: %s\n", strerror(-ret)); 770797ac58cSKevin Wolf goto out; 771797ac58cSKevin Wolf } 772b32d7a39SMax Reitz cnt = ret; 773b32d7a39SMax Reitz 774b32d7a39SMax Reitz ret = 0; 775797ac58cSKevin Wolf 776797ac58cSKevin Wolf if (Pflag) { 777797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 778797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 779797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 780797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7819b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 782797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 783b32d7a39SMax Reitz ret = -EINVAL; 784797ac58cSKevin Wolf } 785797ac58cSKevin Wolf g_free(cmp_buf); 786797ac58cSKevin Wolf } 787797ac58cSKevin Wolf 788797ac58cSKevin Wolf if (qflag) { 789797ac58cSKevin Wolf goto out; 790797ac58cSKevin Wolf } 791797ac58cSKevin Wolf 792797ac58cSKevin Wolf if (vflag) { 793797ac58cSKevin Wolf dump_buffer(buf, offset, count); 794797ac58cSKevin Wolf } 795797ac58cSKevin Wolf 796797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 797797ac58cSKevin Wolf t2 = tsub(t2, t1); 798797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 799797ac58cSKevin Wolf 800797ac58cSKevin Wolf out: 801797ac58cSKevin Wolf qemu_io_free(buf); 802b32d7a39SMax Reitz return ret; 803797ac58cSKevin Wolf } 804797ac58cSKevin Wolf 805797ac58cSKevin Wolf static void readv_help(void) 806797ac58cSKevin Wolf { 807797ac58cSKevin Wolf printf( 808797ac58cSKevin Wolf "\n" 809797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 810797ac58cSKevin Wolf "\n" 811797ac58cSKevin Wolf " Example:\n" 812797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 813797ac58cSKevin Wolf "\n" 814797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 815797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 816797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 817797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 818797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 819797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 820797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 821797ac58cSKevin Wolf "\n"); 822797ac58cSKevin Wolf } 823797ac58cSKevin Wolf 824b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 825797ac58cSKevin Wolf 826797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 827797ac58cSKevin Wolf .name = "readv", 828797ac58cSKevin Wolf .cfunc = readv_f, 829797ac58cSKevin Wolf .argmin = 2, 830797ac58cSKevin Wolf .argmax = -1, 831797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 832797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 833797ac58cSKevin Wolf .help = readv_help, 834797ac58cSKevin Wolf }; 835797ac58cSKevin Wolf 836b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 837797ac58cSKevin Wolf { 838*50290c00SAlex Bennée struct timespec t1, t2; 839dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 840b32d7a39SMax Reitz int c, cnt, ret; 841797ac58cSKevin Wolf char *buf; 842797ac58cSKevin Wolf int64_t offset; 843797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 844797ac58cSKevin Wolf int total = 0; 845797ac58cSKevin Wolf int nr_iov; 846797ac58cSKevin Wolf QEMUIOVector qiov; 847797ac58cSKevin Wolf int pattern = 0; 848dc38852aSEric Blake bool Pflag = false; 849797ac58cSKevin Wolf 850b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 851797ac58cSKevin Wolf switch (c) { 852797ac58cSKevin Wolf case 'C': 853dc38852aSEric Blake Cflag = true; 854797ac58cSKevin Wolf break; 855797ac58cSKevin Wolf case 'P': 856dc38852aSEric Blake Pflag = true; 857797ac58cSKevin Wolf pattern = parse_pattern(optarg); 858797ac58cSKevin Wolf if (pattern < 0) { 859b32d7a39SMax Reitz return -EINVAL; 860797ac58cSKevin Wolf } 861797ac58cSKevin Wolf break; 862797ac58cSKevin Wolf case 'q': 863dc38852aSEric Blake qflag = true; 864797ac58cSKevin Wolf break; 865797ac58cSKevin Wolf case 'v': 866dc38852aSEric Blake vflag = true; 867797ac58cSKevin Wolf break; 868797ac58cSKevin Wolf default: 869b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 870b32d7a39SMax Reitz return -EINVAL; 871797ac58cSKevin Wolf } 872797ac58cSKevin Wolf } 873797ac58cSKevin Wolf 874797ac58cSKevin Wolf if (optind > argc - 2) { 875b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 876b32d7a39SMax Reitz return -EINVAL; 877797ac58cSKevin Wolf } 878797ac58cSKevin Wolf 879797ac58cSKevin Wolf 880797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 881797ac58cSKevin Wolf if (offset < 0) { 882a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 883b32d7a39SMax Reitz return offset; 884797ac58cSKevin Wolf } 885797ac58cSKevin Wolf optind++; 886797ac58cSKevin Wolf 887797ac58cSKevin Wolf nr_iov = argc - optind; 8884c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 889797ac58cSKevin Wolf if (buf == NULL) { 890b32d7a39SMax Reitz return -EINVAL; 891797ac58cSKevin Wolf } 892797ac58cSKevin Wolf 893*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 894b32d7a39SMax Reitz ret = do_aio_readv(blk, &qiov, offset, &total); 895*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 896797ac58cSKevin Wolf 897b32d7a39SMax Reitz if (ret < 0) { 898b32d7a39SMax Reitz printf("readv failed: %s\n", strerror(-ret)); 899797ac58cSKevin Wolf goto out; 900797ac58cSKevin Wolf } 901b32d7a39SMax Reitz cnt = ret; 902b32d7a39SMax Reitz 903b32d7a39SMax Reitz ret = 0; 904797ac58cSKevin Wolf 905797ac58cSKevin Wolf if (Pflag) { 906797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 907797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 908797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 909797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 910cf67b692SStefan Weil PRId64 ", %zu bytes\n", offset, qiov.size); 911b32d7a39SMax Reitz ret = -EINVAL; 912797ac58cSKevin Wolf } 913797ac58cSKevin Wolf g_free(cmp_buf); 914797ac58cSKevin Wolf } 915797ac58cSKevin Wolf 916797ac58cSKevin Wolf if (qflag) { 917797ac58cSKevin Wolf goto out; 918797ac58cSKevin Wolf } 919797ac58cSKevin Wolf 920797ac58cSKevin Wolf if (vflag) { 921797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 922797ac58cSKevin Wolf } 923797ac58cSKevin Wolf 924797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 925797ac58cSKevin Wolf t2 = tsub(t2, t1); 926797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 927797ac58cSKevin Wolf 928797ac58cSKevin Wolf out: 929797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 930797ac58cSKevin Wolf qemu_io_free(buf); 931b32d7a39SMax Reitz return ret; 932797ac58cSKevin Wolf } 933797ac58cSKevin Wolf 934797ac58cSKevin Wolf static void write_help(void) 935797ac58cSKevin Wolf { 936797ac58cSKevin Wolf printf( 937797ac58cSKevin Wolf "\n" 938797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 939797ac58cSKevin Wolf "\n" 940797ac58cSKevin Wolf " Example:\n" 941797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 942797ac58cSKevin Wolf "\n" 943797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 944797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 945797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9464c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 947770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 948c6e3f520SKevin Wolf " -n, -- with -z, don't allow slow fallback\n" 949093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 950797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 951797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 952797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 953c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 954d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 955797ac58cSKevin Wolf "\n"); 956797ac58cSKevin Wolf } 957797ac58cSKevin Wolf 958b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 959797ac58cSKevin Wolf 960797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 961797ac58cSKevin Wolf .name = "write", 962797ac58cSKevin Wolf .altname = "w", 963797ac58cSKevin Wolf .cfunc = write_f, 964887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 965797ac58cSKevin Wolf .argmin = 2, 966797ac58cSKevin Wolf .argmax = -1, 967c6e3f520SKevin Wolf .args = "[-bcCfnquz] [-P pattern] off len", 968797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 969797ac58cSKevin Wolf .help = write_help, 970797ac58cSKevin Wolf }; 971797ac58cSKevin Wolf 972b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 973797ac58cSKevin Wolf { 974*50290c00SAlex Bennée struct timespec t1, t2; 975093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 976dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 977770e0e0eSEric Blake int flags = 0; 978b32d7a39SMax Reitz int c, cnt, ret; 979797ac58cSKevin Wolf char *buf = NULL; 980797ac58cSKevin Wolf int64_t offset; 9819b0beaf3SJohn Snow int64_t count; 982797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9839b0beaf3SJohn Snow int64_t total = 0; 984797ac58cSKevin Wolf int pattern = 0xcd; 985797ac58cSKevin Wolf 986c6e3f520SKevin Wolf while ((c = getopt(argc, argv, "bcCfnpP:quz")) != -1) { 987797ac58cSKevin Wolf switch (c) { 988797ac58cSKevin Wolf case 'b': 989dc38852aSEric Blake bflag = true; 990797ac58cSKevin Wolf break; 991797ac58cSKevin Wolf case 'c': 992dc38852aSEric Blake cflag = true; 993797ac58cSKevin Wolf break; 994797ac58cSKevin Wolf case 'C': 995dc38852aSEric Blake Cflag = true; 996797ac58cSKevin Wolf break; 997770e0e0eSEric Blake case 'f': 998770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 999770e0e0eSEric Blake break; 1000c6e3f520SKevin Wolf case 'n': 1001c6e3f520SKevin Wolf flags |= BDRV_REQ_NO_FALLBACK; 1002c6e3f520SKevin Wolf break; 1003797ac58cSKevin Wolf case 'p': 1004093ea232SEric Blake /* Ignored for backwards compatibility */ 1005797ac58cSKevin Wolf break; 1006797ac58cSKevin Wolf case 'P': 1007dc38852aSEric Blake Pflag = true; 1008797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1009797ac58cSKevin Wolf if (pattern < 0) { 1010b32d7a39SMax Reitz return -EINVAL; 1011797ac58cSKevin Wolf } 1012797ac58cSKevin Wolf break; 1013797ac58cSKevin Wolf case 'q': 1014dc38852aSEric Blake qflag = true; 1015797ac58cSKevin Wolf break; 1016c2e001ccSEric Blake case 'u': 1017c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1018c2e001ccSEric Blake break; 1019797ac58cSKevin Wolf case 'z': 1020dc38852aSEric Blake zflag = true; 1021797ac58cSKevin Wolf break; 1022797ac58cSKevin Wolf default: 1023b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1024b32d7a39SMax Reitz return -EINVAL; 1025797ac58cSKevin Wolf } 1026797ac58cSKevin Wolf } 1027797ac58cSKevin Wolf 1028797ac58cSKevin Wolf if (optind != argc - 2) { 1029b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1030b32d7a39SMax Reitz return -EINVAL; 1031797ac58cSKevin Wolf } 1032797ac58cSKevin Wolf 1033093ea232SEric Blake if (bflag && zflag) { 1034093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1035b32d7a39SMax Reitz return -EINVAL; 1036797ac58cSKevin Wolf } 1037797ac58cSKevin Wolf 1038770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1039770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1040b32d7a39SMax Reitz return -EINVAL; 1041770e0e0eSEric Blake } 1042770e0e0eSEric Blake 1043c6e3f520SKevin Wolf if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { 1044c6e3f520SKevin Wolf printf("-n requires -z to be specified\n"); 1045c6e3f520SKevin Wolf return -EINVAL; 1046c6e3f520SKevin Wolf } 1047c6e3f520SKevin Wolf 1048c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1049c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1050b32d7a39SMax Reitz return -EINVAL; 1051c2e001ccSEric Blake } 1052c2e001ccSEric Blake 1053797ac58cSKevin Wolf if (zflag && Pflag) { 1054797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1055b32d7a39SMax Reitz return -EINVAL; 1056797ac58cSKevin Wolf } 1057797ac58cSKevin Wolf 1058797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1059797ac58cSKevin Wolf if (offset < 0) { 1060a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1061b32d7a39SMax Reitz return offset; 1062797ac58cSKevin Wolf } 1063797ac58cSKevin Wolf 1064797ac58cSKevin Wolf optind++; 1065797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1066797ac58cSKevin Wolf if (count < 0) { 1067a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1068b32d7a39SMax Reitz return count; 10693026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10709b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10713026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1072b32d7a39SMax Reitz return -EINVAL; 1073797ac58cSKevin Wolf } 1074797ac58cSKevin Wolf 1075093ea232SEric Blake if (bflag || cflag) { 10761bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 10771bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1078797ac58cSKevin Wolf offset); 1079b32d7a39SMax Reitz return -EINVAL; 1080797ac58cSKevin Wolf } 1081797ac58cSKevin Wolf 10821bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 10831bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1084797ac58cSKevin Wolf count); 1085b32d7a39SMax Reitz return -EINVAL; 1086797ac58cSKevin Wolf } 1087797ac58cSKevin Wolf } 1088797ac58cSKevin Wolf 1089797ac58cSKevin Wolf if (!zflag) { 10904c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1091797ac58cSKevin Wolf } 1092797ac58cSKevin Wolf 1093*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 10947b3f9712SEric Blake if (bflag) { 1095b32d7a39SMax Reitz ret = do_save_vmstate(blk, buf, offset, count, &total); 1096797ac58cSKevin Wolf } else if (zflag) { 1097b32d7a39SMax Reitz ret = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1098797ac58cSKevin Wolf } else if (cflag) { 1099b32d7a39SMax Reitz ret = do_write_compressed(blk, buf, offset, count, &total); 1100797ac58cSKevin Wolf } else { 1101b32d7a39SMax Reitz ret = do_pwrite(blk, buf, offset, count, flags, &total); 1102797ac58cSKevin Wolf } 1103*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1104797ac58cSKevin Wolf 1105b32d7a39SMax Reitz if (ret < 0) { 1106b32d7a39SMax Reitz printf("write failed: %s\n", strerror(-ret)); 1107797ac58cSKevin Wolf goto out; 1108797ac58cSKevin Wolf } 1109b32d7a39SMax Reitz cnt = ret; 1110b32d7a39SMax Reitz 1111b32d7a39SMax Reitz ret = 0; 1112797ac58cSKevin Wolf 1113797ac58cSKevin Wolf if (qflag) { 1114797ac58cSKevin Wolf goto out; 1115797ac58cSKevin Wolf } 1116797ac58cSKevin Wolf 1117797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1118797ac58cSKevin Wolf t2 = tsub(t2, t1); 1119797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1120797ac58cSKevin Wolf 1121797ac58cSKevin Wolf out: 1122797ac58cSKevin Wolf if (!zflag) { 1123797ac58cSKevin Wolf qemu_io_free(buf); 1124797ac58cSKevin Wolf } 1125b32d7a39SMax Reitz return ret; 1126797ac58cSKevin Wolf } 1127797ac58cSKevin Wolf 1128797ac58cSKevin Wolf static void 1129797ac58cSKevin Wolf writev_help(void) 1130797ac58cSKevin Wolf { 1131797ac58cSKevin Wolf printf( 1132797ac58cSKevin Wolf "\n" 1133797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1134797ac58cSKevin Wolf "\n" 1135797ac58cSKevin Wolf " Example:\n" 11366e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1137797ac58cSKevin Wolf "\n" 1138797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1139797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1140797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1141797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1142770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1143797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1144797ac58cSKevin Wolf "\n"); 1145797ac58cSKevin Wolf } 1146797ac58cSKevin Wolf 1147b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1148797ac58cSKevin Wolf 1149797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1150797ac58cSKevin Wolf .name = "writev", 1151797ac58cSKevin Wolf .cfunc = writev_f, 1152887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1153797ac58cSKevin Wolf .argmin = 2, 1154797ac58cSKevin Wolf .argmax = -1, 1155770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1156797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1157797ac58cSKevin Wolf .help = writev_help, 1158797ac58cSKevin Wolf }; 1159797ac58cSKevin Wolf 1160b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1161797ac58cSKevin Wolf { 1162*50290c00SAlex Bennée struct timespec t1, t2; 1163dc38852aSEric Blake bool Cflag = false, qflag = false; 1164770e0e0eSEric Blake int flags = 0; 1165b32d7a39SMax Reitz int c, cnt, ret; 1166797ac58cSKevin Wolf char *buf; 1167797ac58cSKevin Wolf int64_t offset; 1168797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1169797ac58cSKevin Wolf int total = 0; 1170797ac58cSKevin Wolf int nr_iov; 1171797ac58cSKevin Wolf int pattern = 0xcd; 1172797ac58cSKevin Wolf QEMUIOVector qiov; 1173797ac58cSKevin Wolf 11744ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1175797ac58cSKevin Wolf switch (c) { 1176797ac58cSKevin Wolf case 'C': 1177dc38852aSEric Blake Cflag = true; 1178797ac58cSKevin Wolf break; 1179770e0e0eSEric Blake case 'f': 1180770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1181770e0e0eSEric Blake break; 1182797ac58cSKevin Wolf case 'q': 1183dc38852aSEric Blake qflag = true; 1184797ac58cSKevin Wolf break; 1185797ac58cSKevin Wolf case 'P': 1186797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1187797ac58cSKevin Wolf if (pattern < 0) { 1188b32d7a39SMax Reitz return -EINVAL; 1189797ac58cSKevin Wolf } 1190797ac58cSKevin Wolf break; 1191797ac58cSKevin Wolf default: 1192b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1193b32d7a39SMax Reitz return -EINVAL; 1194797ac58cSKevin Wolf } 1195797ac58cSKevin Wolf } 1196797ac58cSKevin Wolf 1197797ac58cSKevin Wolf if (optind > argc - 2) { 1198b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1199b32d7a39SMax Reitz return -EINVAL; 1200797ac58cSKevin Wolf } 1201797ac58cSKevin Wolf 1202797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1203797ac58cSKevin Wolf if (offset < 0) { 1204a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1205b32d7a39SMax Reitz return offset; 1206797ac58cSKevin Wolf } 1207797ac58cSKevin Wolf optind++; 1208797ac58cSKevin Wolf 1209797ac58cSKevin Wolf nr_iov = argc - optind; 12104c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1211797ac58cSKevin Wolf if (buf == NULL) { 1212b32d7a39SMax Reitz return -EINVAL; 1213797ac58cSKevin Wolf } 1214797ac58cSKevin Wolf 1215*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1216b32d7a39SMax Reitz ret = do_aio_writev(blk, &qiov, offset, flags, &total); 1217*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1218797ac58cSKevin Wolf 1219b32d7a39SMax Reitz if (ret < 0) { 1220b32d7a39SMax Reitz printf("writev failed: %s\n", strerror(-ret)); 1221797ac58cSKevin Wolf goto out; 1222797ac58cSKevin Wolf } 1223b32d7a39SMax Reitz cnt = ret; 1224b32d7a39SMax Reitz 1225b32d7a39SMax Reitz ret = 0; 1226797ac58cSKevin Wolf 1227797ac58cSKevin Wolf if (qflag) { 1228797ac58cSKevin Wolf goto out; 1229797ac58cSKevin Wolf } 1230797ac58cSKevin Wolf 1231797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1232797ac58cSKevin Wolf t2 = tsub(t2, t1); 1233797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1234797ac58cSKevin Wolf out: 1235797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1236797ac58cSKevin Wolf qemu_io_free(buf); 1237b32d7a39SMax Reitz return ret; 1238797ac58cSKevin Wolf } 1239797ac58cSKevin Wolf 1240797ac58cSKevin Wolf struct aio_ctx { 12414c7b7e9bSMax Reitz BlockBackend *blk; 1242797ac58cSKevin Wolf QEMUIOVector qiov; 1243797ac58cSKevin Wolf int64_t offset; 1244797ac58cSKevin Wolf char *buf; 1245dc38852aSEric Blake bool qflag; 1246dc38852aSEric Blake bool vflag; 1247dc38852aSEric Blake bool Cflag; 1248dc38852aSEric Blake bool Pflag; 1249dc38852aSEric Blake bool zflag; 1250a91f9584SFam Zheng BlockAcctCookie acct; 1251797ac58cSKevin Wolf int pattern; 1252*50290c00SAlex Bennée struct timespec t1; 1253797ac58cSKevin Wolf }; 1254797ac58cSKevin Wolf 1255797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1256797ac58cSKevin Wolf { 1257797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1258*50290c00SAlex Bennée struct timespec t2; 1259797ac58cSKevin Wolf 1260*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1261797ac58cSKevin Wolf 1262797ac58cSKevin Wolf 1263797ac58cSKevin Wolf if (ret < 0) { 1264797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1265556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1266797ac58cSKevin Wolf goto out; 1267797ac58cSKevin Wolf } 1268797ac58cSKevin Wolf 12694c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1270a91f9584SFam Zheng 1271797ac58cSKevin Wolf if (ctx->qflag) { 1272797ac58cSKevin Wolf goto out; 1273797ac58cSKevin Wolf } 1274797ac58cSKevin Wolf 1275797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1276797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1277797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1278797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1279797ac58cSKevin Wolf out: 12805ceb7765SKevin Wolf if (!ctx->zflag) { 1281797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1282797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12835ceb7765SKevin Wolf } 1284797ac58cSKevin Wolf g_free(ctx); 1285797ac58cSKevin Wolf } 1286797ac58cSKevin Wolf 1287797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1288797ac58cSKevin Wolf { 1289797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1290*50290c00SAlex Bennée struct timespec t2; 1291797ac58cSKevin Wolf 1292*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1293797ac58cSKevin Wolf 1294797ac58cSKevin Wolf if (ret < 0) { 1295797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1296556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1297797ac58cSKevin Wolf goto out; 1298797ac58cSKevin Wolf } 1299797ac58cSKevin Wolf 1300797ac58cSKevin Wolf if (ctx->Pflag) { 1301797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1302797ac58cSKevin Wolf 1303797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1304797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1305797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1306cf67b692SStefan Weil PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); 1307797ac58cSKevin Wolf } 1308797ac58cSKevin Wolf g_free(cmp_buf); 1309797ac58cSKevin Wolf } 1310797ac58cSKevin Wolf 13114c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1312a91f9584SFam Zheng 1313797ac58cSKevin Wolf if (ctx->qflag) { 1314797ac58cSKevin Wolf goto out; 1315797ac58cSKevin Wolf } 1316797ac58cSKevin Wolf 1317797ac58cSKevin Wolf if (ctx->vflag) { 1318797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1319797ac58cSKevin Wolf } 1320797ac58cSKevin Wolf 1321797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1322797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1323797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1324797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1325797ac58cSKevin Wolf out: 1326797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1327797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1328797ac58cSKevin Wolf g_free(ctx); 1329797ac58cSKevin Wolf } 1330797ac58cSKevin Wolf 1331797ac58cSKevin Wolf static void aio_read_help(void) 1332797ac58cSKevin Wolf { 1333797ac58cSKevin Wolf printf( 1334797ac58cSKevin Wolf "\n" 1335797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1336797ac58cSKevin Wolf "\n" 1337797ac58cSKevin Wolf " Example:\n" 1338797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1339797ac58cSKevin Wolf "\n" 1340797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1341797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1342797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1343797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1344b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1345b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1346b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1347797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1348797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 134937546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1350797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1351797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1352797ac58cSKevin Wolf "\n"); 1353797ac58cSKevin Wolf } 1354797ac58cSKevin Wolf 1355b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1356797ac58cSKevin Wolf 1357797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1358797ac58cSKevin Wolf .name = "aio_read", 1359797ac58cSKevin Wolf .cfunc = aio_read_f, 1360797ac58cSKevin Wolf .argmin = 2, 1361797ac58cSKevin Wolf .argmax = -1, 136237546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1363797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1364797ac58cSKevin Wolf .help = aio_read_help, 1365797ac58cSKevin Wolf }; 1366797ac58cSKevin Wolf 1367b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1368797ac58cSKevin Wolf { 1369797ac58cSKevin Wolf int nr_iov, c; 1370797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1371797ac58cSKevin Wolf 13724c7b7e9bSMax Reitz ctx->blk = blk; 137337546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1374797ac58cSKevin Wolf switch (c) { 1375797ac58cSKevin Wolf case 'C': 1376dc38852aSEric Blake ctx->Cflag = true; 1377797ac58cSKevin Wolf break; 1378797ac58cSKevin Wolf case 'P': 1379dc38852aSEric Blake ctx->Pflag = true; 1380797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1381797ac58cSKevin Wolf if (ctx->pattern < 0) { 1382797ac58cSKevin Wolf g_free(ctx); 1383b32d7a39SMax Reitz return -EINVAL; 1384797ac58cSKevin Wolf } 1385797ac58cSKevin Wolf break; 138637546ff2SEric Blake case 'i': 138737546ff2SEric Blake printf("injecting invalid read request\n"); 138837546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 138937546ff2SEric Blake g_free(ctx); 1390b32d7a39SMax Reitz return 0; 1391797ac58cSKevin Wolf case 'q': 1392dc38852aSEric Blake ctx->qflag = true; 1393797ac58cSKevin Wolf break; 1394797ac58cSKevin Wolf case 'v': 1395dc38852aSEric Blake ctx->vflag = true; 1396797ac58cSKevin Wolf break; 1397797ac58cSKevin Wolf default: 1398797ac58cSKevin Wolf g_free(ctx); 1399b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1400b32d7a39SMax Reitz return -EINVAL; 1401797ac58cSKevin Wolf } 1402797ac58cSKevin Wolf } 1403797ac58cSKevin Wolf 1404797ac58cSKevin Wolf if (optind > argc - 2) { 1405797ac58cSKevin Wolf g_free(ctx); 1406b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1407b32d7a39SMax Reitz return -EINVAL; 1408797ac58cSKevin Wolf } 1409797ac58cSKevin Wolf 1410797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1411797ac58cSKevin Wolf if (ctx->offset < 0) { 1412b32d7a39SMax Reitz int ret = ctx->offset; 1413b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1414797ac58cSKevin Wolf g_free(ctx); 1415b32d7a39SMax Reitz return ret; 1416797ac58cSKevin Wolf } 1417797ac58cSKevin Wolf optind++; 1418797ac58cSKevin Wolf 1419797ac58cSKevin Wolf nr_iov = argc - optind; 14204c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1421797ac58cSKevin Wolf if (ctx->buf == NULL) { 1422556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1423797ac58cSKevin Wolf g_free(ctx); 1424b32d7a39SMax Reitz return -EINVAL; 1425797ac58cSKevin Wolf } 1426797ac58cSKevin Wolf 1427*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 14284c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14294c7b7e9bSMax Reitz BLOCK_ACCT_READ); 14307b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1431b32d7a39SMax Reitz return 0; 1432797ac58cSKevin Wolf } 1433797ac58cSKevin Wolf 1434797ac58cSKevin Wolf static void aio_write_help(void) 1435797ac58cSKevin Wolf { 1436797ac58cSKevin Wolf printf( 1437797ac58cSKevin Wolf "\n" 1438797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1439797ac58cSKevin Wolf " from multiple buffers\n" 1440797ac58cSKevin Wolf "\n" 1441797ac58cSKevin Wolf " Example:\n" 1442797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1443797ac58cSKevin Wolf "\n" 1444797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1445797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1446797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1447797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1448b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1449b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1450b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1451797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1452797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1453770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 145437546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1455797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1456c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1457d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1458797ac58cSKevin Wolf "\n"); 1459797ac58cSKevin Wolf } 1460797ac58cSKevin Wolf 1461b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1462797ac58cSKevin Wolf 1463797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1464797ac58cSKevin Wolf .name = "aio_write", 1465797ac58cSKevin Wolf .cfunc = aio_write_f, 1466887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1467797ac58cSKevin Wolf .argmin = 2, 1468797ac58cSKevin Wolf .argmax = -1, 146937546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1470797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1471797ac58cSKevin Wolf .help = aio_write_help, 1472797ac58cSKevin Wolf }; 1473797ac58cSKevin Wolf 1474b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1475797ac58cSKevin Wolf { 1476797ac58cSKevin Wolf int nr_iov, c; 1477797ac58cSKevin Wolf int pattern = 0xcd; 1478797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1479770e0e0eSEric Blake int flags = 0; 1480797ac58cSKevin Wolf 14814c7b7e9bSMax Reitz ctx->blk = blk; 148237546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1483797ac58cSKevin Wolf switch (c) { 1484797ac58cSKevin Wolf case 'C': 1485dc38852aSEric Blake ctx->Cflag = true; 1486797ac58cSKevin Wolf break; 1487770e0e0eSEric Blake case 'f': 1488770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1489770e0e0eSEric Blake break; 1490797ac58cSKevin Wolf case 'q': 1491dc38852aSEric Blake ctx->qflag = true; 1492797ac58cSKevin Wolf break; 1493c2e001ccSEric Blake case 'u': 1494c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1495c2e001ccSEric Blake break; 1496797ac58cSKevin Wolf case 'P': 1497797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1498797ac58cSKevin Wolf if (pattern < 0) { 1499797ac58cSKevin Wolf g_free(ctx); 1500b32d7a39SMax Reitz return -EINVAL; 1501797ac58cSKevin Wolf } 1502797ac58cSKevin Wolf break; 150337546ff2SEric Blake case 'i': 150437546ff2SEric Blake printf("injecting invalid write request\n"); 150537546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 150637546ff2SEric Blake g_free(ctx); 1507b32d7a39SMax Reitz return 0; 15085ceb7765SKevin Wolf case 'z': 1509dc38852aSEric Blake ctx->zflag = true; 15105ceb7765SKevin Wolf break; 1511797ac58cSKevin Wolf default: 1512797ac58cSKevin Wolf g_free(ctx); 1513b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1514b32d7a39SMax Reitz return -EINVAL; 1515797ac58cSKevin Wolf } 1516797ac58cSKevin Wolf } 1517797ac58cSKevin Wolf 1518797ac58cSKevin Wolf if (optind > argc - 2) { 1519797ac58cSKevin Wolf g_free(ctx); 1520b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1521b32d7a39SMax Reitz return -EINVAL; 1522797ac58cSKevin Wolf } 1523797ac58cSKevin Wolf 15245ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 15255ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 15265ceb7765SKevin Wolf g_free(ctx); 1527b32d7a39SMax Reitz return -EINVAL; 15285ceb7765SKevin Wolf } 15295ceb7765SKevin Wolf 1530c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1531c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 15324ca1d340SEric Blake g_free(ctx); 1533b32d7a39SMax Reitz return -EINVAL; 1534c2e001ccSEric Blake } 1535c2e001ccSEric Blake 15365ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 15375ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 15385ceb7765SKevin Wolf g_free(ctx); 1539b32d7a39SMax Reitz return -EINVAL; 15405ceb7765SKevin Wolf } 15415ceb7765SKevin Wolf 1542797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1543797ac58cSKevin Wolf if (ctx->offset < 0) { 1544b32d7a39SMax Reitz int ret = ctx->offset; 1545b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1546797ac58cSKevin Wolf g_free(ctx); 1547b32d7a39SMax Reitz return ret; 1548797ac58cSKevin Wolf } 1549797ac58cSKevin Wolf optind++; 1550797ac58cSKevin Wolf 15515ceb7765SKevin Wolf if (ctx->zflag) { 15525ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 15535ceb7765SKevin Wolf if (count < 0) { 15545ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 15550e01b76eSKevin Wolf g_free(ctx); 1556b32d7a39SMax Reitz return count; 15575ceb7765SKevin Wolf } 15585ceb7765SKevin Wolf 15595ceb7765SKevin Wolf ctx->qiov.size = count; 1560d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1561770e0e0eSEric Blake ctx); 15625ceb7765SKevin Wolf } else { 1563797ac58cSKevin Wolf nr_iov = argc - optind; 15645ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 15655ceb7765SKevin Wolf pattern); 1566797ac58cSKevin Wolf if (ctx->buf == NULL) { 1567556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1568797ac58cSKevin Wolf g_free(ctx); 1569b32d7a39SMax Reitz return -EINVAL; 1570797ac58cSKevin Wolf } 1571797ac58cSKevin Wolf 1572*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 15734c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15744c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 15755ceb7765SKevin Wolf 1576770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1577770e0e0eSEric Blake ctx); 15785ceb7765SKevin Wolf } 1579b32d7a39SMax Reitz 1580b32d7a39SMax Reitz return 0; 1581797ac58cSKevin Wolf } 1582797ac58cSKevin Wolf 1583b32d7a39SMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1584797ac58cSKevin Wolf { 1585556c2b60SAlberto Garcia BlockAcctCookie cookie; 1586556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15874c7b7e9bSMax Reitz blk_drain_all(); 1588556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1589b32d7a39SMax Reitz return 0; 1590797ac58cSKevin Wolf } 1591797ac58cSKevin Wolf 1592797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1593797ac58cSKevin Wolf .name = "aio_flush", 1594797ac58cSKevin Wolf .cfunc = aio_flush_f, 1595797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1596797ac58cSKevin Wolf }; 1597797ac58cSKevin Wolf 1598b32d7a39SMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1599797ac58cSKevin Wolf { 1600b32d7a39SMax Reitz return blk_flush(blk); 1601797ac58cSKevin Wolf } 1602797ac58cSKevin Wolf 1603797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1604797ac58cSKevin Wolf .name = "flush", 1605797ac58cSKevin Wolf .altname = "f", 1606797ac58cSKevin Wolf .cfunc = flush_f, 1607797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1608797ac58cSKevin Wolf }; 1609797ac58cSKevin Wolf 1610b32d7a39SMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1611797ac58cSKevin Wolf { 1612ed3d2ec9SMax Reitz Error *local_err = NULL; 1613797ac58cSKevin Wolf int64_t offset; 1614797ac58cSKevin Wolf int ret; 1615797ac58cSKevin Wolf 1616797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1617797ac58cSKevin Wolf if (offset < 0) { 1618a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1619b32d7a39SMax Reitz return offset; 1620797ac58cSKevin Wolf } 1621797ac58cSKevin Wolf 16223a691c50SMax Reitz ret = blk_truncate(blk, offset, PREALLOC_MODE_OFF, &local_err); 1623797ac58cSKevin Wolf if (ret < 0) { 1624ed3d2ec9SMax Reitz error_report_err(local_err); 1625b32d7a39SMax Reitz return ret; 1626797ac58cSKevin Wolf } 1627b32d7a39SMax Reitz 1628b32d7a39SMax Reitz return 0; 1629797ac58cSKevin Wolf } 1630797ac58cSKevin Wolf 1631797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1632797ac58cSKevin Wolf .name = "truncate", 1633797ac58cSKevin Wolf .altname = "t", 1634797ac58cSKevin Wolf .cfunc = truncate_f, 1635887354bdSKevin Wolf .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 1636797ac58cSKevin Wolf .argmin = 1, 1637797ac58cSKevin Wolf .argmax = 1, 1638797ac58cSKevin Wolf .args = "off", 1639797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1640797ac58cSKevin Wolf }; 1641797ac58cSKevin Wolf 1642b32d7a39SMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1643797ac58cSKevin Wolf { 1644797ac58cSKevin Wolf int64_t size; 1645797ac58cSKevin Wolf char s1[64]; 1646797ac58cSKevin Wolf 16474c7b7e9bSMax Reitz size = blk_getlength(blk); 1648797ac58cSKevin Wolf if (size < 0) { 1649797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1650b32d7a39SMax Reitz return size; 1651797ac58cSKevin Wolf } 1652797ac58cSKevin Wolf 1653797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1654797ac58cSKevin Wolf printf("%s\n", s1); 1655b32d7a39SMax Reitz return 0; 1656797ac58cSKevin Wolf } 1657797ac58cSKevin Wolf 1658797ac58cSKevin Wolf 1659797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1660797ac58cSKevin Wolf .name = "length", 1661797ac58cSKevin Wolf .altname = "l", 1662797ac58cSKevin Wolf .cfunc = length_f, 1663797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1664797ac58cSKevin Wolf }; 1665797ac58cSKevin Wolf 1666797ac58cSKevin Wolf 1667b32d7a39SMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1668797ac58cSKevin Wolf { 16694c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1670797ac58cSKevin Wolf BlockDriverInfo bdi; 1671a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 16721bf6e9caSAndrey Shinkevich Error *local_err = NULL; 1673797ac58cSKevin Wolf char s1[64], s2[64]; 1674797ac58cSKevin Wolf int ret; 1675797ac58cSKevin Wolf 1676797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1677797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1678797ac58cSKevin Wolf } 1679797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1680797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1681797ac58cSKevin Wolf } 1682797ac58cSKevin Wolf 1683797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1684797ac58cSKevin Wolf if (ret) { 1685b32d7a39SMax Reitz return ret; 1686797ac58cSKevin Wolf } 1687797ac58cSKevin Wolf 1688797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1689797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1690797ac58cSKevin Wolf 1691797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1692797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1693797ac58cSKevin Wolf 16941bf6e9caSAndrey Shinkevich spec_info = bdrv_get_specific_info(bs, &local_err); 16951bf6e9caSAndrey Shinkevich if (local_err) { 16961bf6e9caSAndrey Shinkevich error_report_err(local_err); 16971bf6e9caSAndrey Shinkevich return -EIO; 16981bf6e9caSAndrey Shinkevich } 1699a8d8ecb7SMax Reitz if (spec_info) { 1700a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1701e1ce7d74SMarkus Armbruster bdrv_image_info_specific_dump(spec_info); 1702a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1703a8d8ecb7SMax Reitz } 1704b32d7a39SMax Reitz 1705b32d7a39SMax Reitz return 0; 1706797ac58cSKevin Wolf } 1707797ac58cSKevin Wolf 1708797ac58cSKevin Wolf 1709797ac58cSKevin Wolf 1710797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1711797ac58cSKevin Wolf .name = "info", 1712797ac58cSKevin Wolf .altname = "i", 1713797ac58cSKevin Wolf .cfunc = info_f, 1714797ac58cSKevin Wolf .oneline = "prints information about the current file", 1715797ac58cSKevin Wolf }; 1716797ac58cSKevin Wolf 1717797ac58cSKevin Wolf static void discard_help(void) 1718797ac58cSKevin Wolf { 1719797ac58cSKevin Wolf printf( 1720797ac58cSKevin Wolf "\n" 1721797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1722797ac58cSKevin Wolf "\n" 1723797ac58cSKevin Wolf " Example:\n" 1724797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1725797ac58cSKevin Wolf "\n" 1726797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1727797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1728797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1729797ac58cSKevin Wolf "\n"); 1730797ac58cSKevin Wolf } 1731797ac58cSKevin Wolf 1732b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1733797ac58cSKevin Wolf 1734797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1735797ac58cSKevin Wolf .name = "discard", 1736797ac58cSKevin Wolf .altname = "d", 1737797ac58cSKevin Wolf .cfunc = discard_f, 1738887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1739797ac58cSKevin Wolf .argmin = 2, 1740797ac58cSKevin Wolf .argmax = -1, 1741797ac58cSKevin Wolf .args = "[-Cq] off len", 1742797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1743797ac58cSKevin Wolf .help = discard_help, 1744797ac58cSKevin Wolf }; 1745797ac58cSKevin Wolf 1746b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1747797ac58cSKevin Wolf { 1748*50290c00SAlex Bennée struct timespec t1, t2; 1749dc38852aSEric Blake bool Cflag = false, qflag = false; 1750797ac58cSKevin Wolf int c, ret; 1751f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1752797ac58cSKevin Wolf 1753b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1754797ac58cSKevin Wolf switch (c) { 1755797ac58cSKevin Wolf case 'C': 1756dc38852aSEric Blake Cflag = true; 1757797ac58cSKevin Wolf break; 1758797ac58cSKevin Wolf case 'q': 1759dc38852aSEric Blake qflag = true; 1760797ac58cSKevin Wolf break; 1761797ac58cSKevin Wolf default: 1762b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1763b32d7a39SMax Reitz return -EINVAL; 1764797ac58cSKevin Wolf } 1765797ac58cSKevin Wolf } 1766797ac58cSKevin Wolf 1767797ac58cSKevin Wolf if (optind != argc - 2) { 1768b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1769b32d7a39SMax Reitz return -EINVAL; 1770797ac58cSKevin Wolf } 1771797ac58cSKevin Wolf 1772797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1773797ac58cSKevin Wolf if (offset < 0) { 1774a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1775b32d7a39SMax Reitz return offset; 1776797ac58cSKevin Wolf } 1777797ac58cSKevin Wolf 1778797ac58cSKevin Wolf optind++; 1779f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1780f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1781f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1782b32d7a39SMax Reitz return bytes; 178341ae31e3SAlberto Garcia } else if (bytes > BDRV_REQUEST_MAX_BYTES) { 17849b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 178541ae31e3SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1786b32d7a39SMax Reitz return -EINVAL; 1787797ac58cSKevin Wolf } 1788797ac58cSKevin Wolf 1789*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1790f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 1791*50290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1792797ac58cSKevin Wolf 1793797ac58cSKevin Wolf if (ret < 0) { 1794797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1795b32d7a39SMax Reitz return ret; 1796797ac58cSKevin Wolf } 1797797ac58cSKevin Wolf 1798797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1799797ac58cSKevin Wolf if (!qflag) { 1800797ac58cSKevin Wolf t2 = tsub(t2, t1); 1801f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1802797ac58cSKevin Wolf } 1803b32d7a39SMax Reitz 1804b32d7a39SMax Reitz return 0; 1805797ac58cSKevin Wolf } 1806797ac58cSKevin Wolf 1807b32d7a39SMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1808797ac58cSKevin Wolf { 18094c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1810d6a644bbSEric Blake int64_t offset, start, remaining, count; 1811797ac58cSKevin Wolf char s1[64]; 1812d6a644bbSEric Blake int ret; 1813d6a644bbSEric Blake int64_t num, sum_alloc; 1814797ac58cSKevin Wolf 1815d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1816797ac58cSKevin Wolf if (offset < 0) { 1817a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1818b32d7a39SMax Reitz return offset; 1819797ac58cSKevin Wolf } 1820797ac58cSKevin Wolf 1821797ac58cSKevin Wolf if (argc == 3) { 18224401fdc7SEric Blake count = cvtnum(argv[2]); 18234401fdc7SEric Blake if (count < 0) { 18244401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1825b32d7a39SMax Reitz return count; 1826797ac58cSKevin Wolf } 1827797ac58cSKevin Wolf } else { 18284401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1829797ac58cSKevin Wolf } 1830797ac58cSKevin Wolf 1831d6a644bbSEric Blake remaining = count; 1832797ac58cSKevin Wolf sum_alloc = 0; 1833797ac58cSKevin Wolf while (remaining) { 1834d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1835d663640cSPaolo Bonzini if (ret < 0) { 1836d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1837b32d7a39SMax Reitz return ret; 1838d663640cSPaolo Bonzini } 1839d6a644bbSEric Blake offset += num; 1840797ac58cSKevin Wolf remaining -= num; 1841797ac58cSKevin Wolf if (ret) { 1842797ac58cSKevin Wolf sum_alloc += num; 1843797ac58cSKevin Wolf } 1844797ac58cSKevin Wolf if (num == 0) { 1845d6a644bbSEric Blake count -= remaining; 1846797ac58cSKevin Wolf remaining = 0; 1847797ac58cSKevin Wolf } 1848797ac58cSKevin Wolf } 1849797ac58cSKevin Wolf 1850d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1851797ac58cSKevin Wolf 18524401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1853d6a644bbSEric Blake sum_alloc, count, s1); 1854b32d7a39SMax Reitz return 0; 1855797ac58cSKevin Wolf } 1856797ac58cSKevin Wolf 1857797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1858797ac58cSKevin Wolf .name = "alloc", 1859797ac58cSKevin Wolf .altname = "a", 1860797ac58cSKevin Wolf .argmin = 1, 1861797ac58cSKevin Wolf .argmax = 2, 1862797ac58cSKevin Wolf .cfunc = alloc_f, 18634401fdc7SEric Blake .args = "offset [count]", 18644401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1865797ac58cSKevin Wolf }; 1866797ac58cSKevin Wolf 1867797ac58cSKevin Wolf 1868d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1869d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1870797ac58cSKevin Wolf { 1871d6a644bbSEric Blake int64_t num; 1872d6a644bbSEric Blake int num_checked; 1873797ac58cSKevin Wolf int ret, firstret; 1874797ac58cSKevin Wolf 1875d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1876d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 1877797ac58cSKevin Wolf if (ret < 0) { 1878797ac58cSKevin Wolf return ret; 1879797ac58cSKevin Wolf } 1880797ac58cSKevin Wolf 1881797ac58cSKevin Wolf firstret = ret; 1882797ac58cSKevin Wolf *pnum = num; 1883797ac58cSKevin Wolf 1884d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1885d6a644bbSEric Blake offset += num; 1886d6a644bbSEric Blake bytes -= num; 1887797ac58cSKevin Wolf 1888d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1889d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 18904b25bbc4SMax Reitz if (ret == firstret && num) { 1891797ac58cSKevin Wolf *pnum += num; 1892797ac58cSKevin Wolf } else { 1893797ac58cSKevin Wolf break; 1894797ac58cSKevin Wolf } 1895797ac58cSKevin Wolf } 1896797ac58cSKevin Wolf 1897797ac58cSKevin Wolf return firstret; 1898797ac58cSKevin Wolf } 1899797ac58cSKevin Wolf 1900b32d7a39SMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1901797ac58cSKevin Wolf { 1902d6a644bbSEric Blake int64_t offset, bytes; 19036f3c90afSEric Blake char s1[64], s2[64]; 1904797ac58cSKevin Wolf int64_t num; 1905797ac58cSKevin Wolf int ret; 1906797ac58cSKevin Wolf const char *retstr; 1907797ac58cSKevin Wolf 1908797ac58cSKevin Wolf offset = 0; 1909d6a644bbSEric Blake bytes = blk_getlength(blk); 1910d6a644bbSEric Blake if (bytes < 0) { 1911d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 1912b32d7a39SMax Reitz return bytes; 19134c7b7e9bSMax Reitz } 19144c7b7e9bSMax Reitz 1915d6a644bbSEric Blake while (bytes) { 1916d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 1917797ac58cSKevin Wolf if (ret < 0) { 1918797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1919b32d7a39SMax Reitz return ret; 19204b25bbc4SMax Reitz } else if (!num) { 19214b25bbc4SMax Reitz error_report("Unexpected end of image"); 1922b32d7a39SMax Reitz return -EIO; 1923797ac58cSKevin Wolf } 1924797ac58cSKevin Wolf 1925797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1926d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 1927d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 19286f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 1929d6a644bbSEric Blake s1, num, retstr, s2, offset); 1930797ac58cSKevin Wolf 1931797ac58cSKevin Wolf offset += num; 1932d6a644bbSEric Blake bytes -= num; 1933d6a644bbSEric Blake } 1934b32d7a39SMax Reitz 1935b32d7a39SMax Reitz return 0; 1936797ac58cSKevin Wolf } 1937797ac58cSKevin Wolf 1938797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1939797ac58cSKevin Wolf .name = "map", 1940797ac58cSKevin Wolf .argmin = 0, 1941797ac58cSKevin Wolf .argmax = 0, 1942797ac58cSKevin Wolf .cfunc = map_f, 1943797ac58cSKevin Wolf .args = "", 1944797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1945797ac58cSKevin Wolf }; 1946797ac58cSKevin Wolf 19475bbd2e59SKevin Wolf static void reopen_help(void) 19485bbd2e59SKevin Wolf { 19495bbd2e59SKevin Wolf printf( 19505bbd2e59SKevin Wolf "\n" 19515bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 19525bbd2e59SKevin Wolf "\n" 19535bbd2e59SKevin Wolf " Example:\n" 19545bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 19555bbd2e59SKevin Wolf "\n" 19565bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 1957ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 19585bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 19595bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 19605bbd2e59SKevin Wolf "\n"); 19615bbd2e59SKevin Wolf } 19625bbd2e59SKevin Wolf 1963b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv); 19645bbd2e59SKevin Wolf 19655bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 19665bbd2e59SKevin Wolf .name = "reopen", 19675bbd2e59SKevin Wolf .merge_lists = true, 19685bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 19695bbd2e59SKevin Wolf .desc = { 19705bbd2e59SKevin Wolf /* no elements => accept any params */ 19715bbd2e59SKevin Wolf { /* end of list */ } 19725bbd2e59SKevin Wolf }, 19735bbd2e59SKevin Wolf }; 19745bbd2e59SKevin Wolf 19755bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19765bbd2e59SKevin Wolf .name = "reopen", 19775bbd2e59SKevin Wolf .argmin = 0, 19785bbd2e59SKevin Wolf .argmax = -1, 19795bbd2e59SKevin Wolf .cfunc = reopen_f, 1980ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 19815bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19825bbd2e59SKevin Wolf .help = reopen_help, 19835bbd2e59SKevin Wolf }; 19845bbd2e59SKevin Wolf 1985b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv) 19865bbd2e59SKevin Wolf { 19875bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19885bbd2e59SKevin Wolf QemuOpts *qopts; 19895bbd2e59SKevin Wolf QDict *opts; 19905bbd2e59SKevin Wolf int c; 19915bbd2e59SKevin Wolf int flags = bs->open_flags; 199219dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 1993ea92203cSKevin Wolf bool has_rw_option = false; 1994dc900c35SAlberto Garcia bool has_cache_option = false; 19955bbd2e59SKevin Wolf 19965bbd2e59SKevin Wolf BlockReopenQueue *brq; 19975bbd2e59SKevin Wolf Error *local_err = NULL; 19985bbd2e59SKevin Wolf 1999ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 20005bbd2e59SKevin Wolf switch (c) { 20015bbd2e59SKevin Wolf case 'c': 200219dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 20035bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2004b32d7a39SMax Reitz return -EINVAL; 20055bbd2e59SKevin Wolf } 2006dc900c35SAlberto Garcia has_cache_option = true; 20075bbd2e59SKevin Wolf break; 20085bbd2e59SKevin Wolf case 'o': 20095bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 20105bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2011b32d7a39SMax Reitz return -EINVAL; 20125bbd2e59SKevin Wolf } 20135bbd2e59SKevin Wolf break; 20145bbd2e59SKevin Wolf case 'r': 2015ea92203cSKevin Wolf if (has_rw_option) { 2016ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2017b32d7a39SMax Reitz return -EINVAL; 2018ea92203cSKevin Wolf } 20195bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2020ea92203cSKevin Wolf has_rw_option = true; 2021ea92203cSKevin Wolf break; 2022ea92203cSKevin Wolf case 'w': 2023ea92203cSKevin Wolf if (has_rw_option) { 2024ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2025b32d7a39SMax Reitz return -EINVAL; 2026ea92203cSKevin Wolf } 2027ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 2028ea92203cSKevin Wolf has_rw_option = true; 20295bbd2e59SKevin Wolf break; 20305bbd2e59SKevin Wolf default: 20315bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2032b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2033b32d7a39SMax Reitz return -EINVAL; 20345bbd2e59SKevin Wolf } 20355bbd2e59SKevin Wolf } 20365bbd2e59SKevin Wolf 20375bbd2e59SKevin Wolf if (optind != argc) { 20385bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2039b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2040b32d7a39SMax Reitz return -EINVAL; 20415bbd2e59SKevin Wolf } 20425bbd2e59SKevin Wolf 2043a8003ec4SAlberto Garcia if (!writethrough != blk_enable_write_cache(blk) && 204419dbecdcSKevin Wolf blk_get_attached_dev(blk)) 204519dbecdcSKevin Wolf { 204619dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 204719dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 2048b32d7a39SMax Reitz return -EBUSY; 204919dbecdcSKevin Wolf } 205019dbecdcSKevin Wolf 2051f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2052f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2053f3adefb2SKevin Wolf 2054f3adefb2SKevin Wolf bdrv_drain(bs); 2055f3adefb2SKevin Wolf 2056f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2057f3adefb2SKevin Wolf blk_set_perm(blk, 2058f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2059f3adefb2SKevin Wolf orig_shared_perm, 2060f3adefb2SKevin Wolf &error_abort); 2061f3adefb2SKevin Wolf } 2062f3adefb2SKevin Wolf 20635bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2064dc900c35SAlberto Garcia opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); 20655bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 20665bbd2e59SKevin Wolf 2067dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { 2068dc900c35SAlberto Garcia if (has_rw_option) { 2069dc900c35SAlberto Garcia error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); 2070dc900c35SAlberto Garcia qobject_unref(opts); 2071dc900c35SAlberto Garcia return -EINVAL; 2072dc900c35SAlberto Garcia } 2073dc900c35SAlberto Garcia } else { 2074dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); 2075dc900c35SAlberto Garcia } 2076dc900c35SAlberto Garcia 2077dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || 2078dc900c35SAlberto Garcia qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { 2079dc900c35SAlberto Garcia if (has_cache_option) { 2080dc900c35SAlberto Garcia error_report("Cannot set both -c and the cache options"); 2081dc900c35SAlberto Garcia qobject_unref(opts); 2082dc900c35SAlberto Garcia return -EINVAL; 2083dc900c35SAlberto Garcia } 2084dc900c35SAlberto Garcia } else { 2085dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); 2086dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); 2087dc900c35SAlberto Garcia } 2088dc900c35SAlberto Garcia 20891a63a907SKevin Wolf bdrv_subtree_drained_begin(bs); 2090077e8e20SAlberto Garcia brq = bdrv_reopen_queue(NULL, bs, opts, true); 20915019aeceSAlberto Garcia bdrv_reopen_multiple(brq, &local_err); 20921a63a907SKevin Wolf bdrv_subtree_drained_end(bs); 20931a63a907SKevin Wolf 20945bbd2e59SKevin Wolf if (local_err) { 20955bbd2e59SKevin Wolf error_report_err(local_err); 2096b32d7a39SMax Reitz return -EINVAL; 20975bbd2e59SKevin Wolf } 20985bbd2e59SKevin Wolf 2099b32d7a39SMax Reitz blk_set_enable_write_cache(blk, !writethrough); 2100b32d7a39SMax Reitz return 0; 2101b32d7a39SMax Reitz } 2102b32d7a39SMax Reitz 2103b32d7a39SMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2104797ac58cSKevin Wolf { 2105797ac58cSKevin Wolf int ret; 2106797ac58cSKevin Wolf 21074c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2108797ac58cSKevin Wolf if (ret < 0) { 2109797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2110b32d7a39SMax Reitz return ret; 2111797ac58cSKevin Wolf } 2112797ac58cSKevin Wolf 2113b32d7a39SMax Reitz return 0; 2114b32d7a39SMax Reitz } 2115b32d7a39SMax Reitz 2116b32d7a39SMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 21174cc70e93SFam Zheng { 21184cc70e93SFam Zheng int ret; 21194cc70e93SFam Zheng 21204c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 21214cc70e93SFam Zheng if (ret < 0) { 21224cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 2123b32d7a39SMax Reitz return ret; 21244cc70e93SFam Zheng } 2125b32d7a39SMax Reitz 2126b32d7a39SMax Reitz return 0; 21274cc70e93SFam Zheng } 21284cc70e93SFam Zheng 2129797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2130797ac58cSKevin Wolf .name = "break", 2131797ac58cSKevin Wolf .argmin = 2, 2132797ac58cSKevin Wolf .argmax = 2, 2133797ac58cSKevin Wolf .cfunc = break_f, 2134797ac58cSKevin Wolf .args = "event tag", 2135797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2136797ac58cSKevin Wolf "request as tag", 2137797ac58cSKevin Wolf }; 2138797ac58cSKevin Wolf 21394cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 21404cc70e93SFam Zheng .name = "remove_break", 21414cc70e93SFam Zheng .argmin = 1, 21424cc70e93SFam Zheng .argmax = 1, 21434cc70e93SFam Zheng .cfunc = remove_break_f, 21444cc70e93SFam Zheng .args = "tag", 21454cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 21464cc70e93SFam Zheng }; 21474cc70e93SFam Zheng 2148b32d7a39SMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2149797ac58cSKevin Wolf { 2150797ac58cSKevin Wolf int ret; 2151797ac58cSKevin Wolf 21524c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2153797ac58cSKevin Wolf if (ret < 0) { 2154797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2155b32d7a39SMax Reitz return ret; 2156797ac58cSKevin Wolf } 2157b32d7a39SMax Reitz 2158b32d7a39SMax Reitz return 0; 2159797ac58cSKevin Wolf } 2160797ac58cSKevin Wolf 2161797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2162797ac58cSKevin Wolf .name = "resume", 2163797ac58cSKevin Wolf .argmin = 1, 2164797ac58cSKevin Wolf .argmax = 1, 2165797ac58cSKevin Wolf .cfunc = resume_f, 2166797ac58cSKevin Wolf .args = "tag", 2167797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2168797ac58cSKevin Wolf }; 2169797ac58cSKevin Wolf 2170b32d7a39SMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2171797ac58cSKevin Wolf { 21724c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 21734c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2174797ac58cSKevin Wolf } 2175b32d7a39SMax Reitz return 0; 2176797ac58cSKevin Wolf } 2177797ac58cSKevin Wolf 2178797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2179797ac58cSKevin Wolf .name = "wait_break", 2180797ac58cSKevin Wolf .argmin = 1, 2181797ac58cSKevin Wolf .argmax = 1, 2182797ac58cSKevin Wolf .cfunc = wait_break_f, 2183797ac58cSKevin Wolf .args = "tag", 2184797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2185797ac58cSKevin Wolf }; 2186797ac58cSKevin Wolf 2187b32d7a39SMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2188797ac58cSKevin Wolf { 2189797ac58cSKevin Wolf abort(); 2190797ac58cSKevin Wolf } 2191797ac58cSKevin Wolf 2192797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2193797ac58cSKevin Wolf .name = "abort", 2194797ac58cSKevin Wolf .cfunc = abort_f, 2195797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2196797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2197797ac58cSKevin Wolf }; 2198797ac58cSKevin Wolf 21990e82dc7bSMax Reitz static void sigraise_help(void) 22000e82dc7bSMax Reitz { 22010e82dc7bSMax Reitz printf( 22020e82dc7bSMax Reitz "\n" 22030e82dc7bSMax Reitz " raises the given signal\n" 22040e82dc7bSMax Reitz "\n" 22050e82dc7bSMax Reitz " Example:\n" 22060e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 22070e82dc7bSMax Reitz "\n" 22080e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 22090e82dc7bSMax Reitz " given to sigraise.\n" 22100e82dc7bSMax Reitz "\n", SIGTERM); 22110e82dc7bSMax Reitz } 22120e82dc7bSMax Reitz 2213b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 22140e82dc7bSMax Reitz 22150e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 22160e82dc7bSMax Reitz .name = "sigraise", 22170e82dc7bSMax Reitz .cfunc = sigraise_f, 22180e82dc7bSMax Reitz .argmin = 1, 22190e82dc7bSMax Reitz .argmax = 1, 22200e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 22210e82dc7bSMax Reitz .args = "signal", 22220e82dc7bSMax Reitz .oneline = "raises a signal", 22230e82dc7bSMax Reitz .help = sigraise_help, 22240e82dc7bSMax Reitz }; 22250e82dc7bSMax Reitz 2226b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 22270e82dc7bSMax Reitz { 22289b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 22290e82dc7bSMax Reitz if (sig < 0) { 2230a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2231b32d7a39SMax Reitz return sig; 22329b0beaf3SJohn Snow } else if (sig > NSIG) { 22339b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 22349b0beaf3SJohn Snow argv[1]); 2235b32d7a39SMax Reitz return -EINVAL; 22360e82dc7bSMax Reitz } 22370e82dc7bSMax Reitz 22380e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 22390e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 22400e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 22410e82dc7bSMax Reitz fflush(stdout); 22420e82dc7bSMax Reitz fflush(stderr); 22430e82dc7bSMax Reitz 22440e82dc7bSMax Reitz raise(sig); 2245b32d7a39SMax Reitz 2246b32d7a39SMax Reitz return 0; 22470e82dc7bSMax Reitz } 22480e82dc7bSMax Reitz 2249cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2250cd33d02aSKevin Wolf { 2251cd33d02aSKevin Wolf bool *expired = opaque; 2252cd33d02aSKevin Wolf *expired = true; 2253cd33d02aSKevin Wolf } 2254cd33d02aSKevin Wolf 2255b32d7a39SMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2256cd33d02aSKevin Wolf { 2257cd33d02aSKevin Wolf char *endptr; 2258cd33d02aSKevin Wolf long ms; 2259cd33d02aSKevin Wolf struct QEMUTimer *timer; 2260cd33d02aSKevin Wolf bool expired = false; 2261cd33d02aSKevin Wolf 2262cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2263cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2264cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2265b32d7a39SMax Reitz return -EINVAL; 2266cd33d02aSKevin Wolf } 2267cd33d02aSKevin Wolf 2268cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2269cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2270cd33d02aSKevin Wolf 2271cd33d02aSKevin Wolf while (!expired) { 2272cd33d02aSKevin Wolf main_loop_wait(false); 2273cd33d02aSKevin Wolf } 2274cd33d02aSKevin Wolf 2275cd33d02aSKevin Wolf timer_free(timer); 2276b32d7a39SMax Reitz return 0; 2277cd33d02aSKevin Wolf } 2278cd33d02aSKevin Wolf 2279cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2280cd33d02aSKevin Wolf .name = "sleep", 2281cd33d02aSKevin Wolf .argmin = 1, 2282cd33d02aSKevin Wolf .argmax = 1, 2283cd33d02aSKevin Wolf .cfunc = sleep_f, 2284cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2285cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2286cd33d02aSKevin Wolf }; 2287cd33d02aSKevin Wolf 2288f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2289f18a834aSKevin Wolf { 2290f18a834aSKevin Wolf if (cmd) { 2291f18a834aSKevin Wolf printf("%s ", cmd); 2292f18a834aSKevin Wolf } else { 2293f18a834aSKevin Wolf printf("%s ", ct->name); 2294f18a834aSKevin Wolf if (ct->altname) { 2295f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2296f18a834aSKevin Wolf } 2297f18a834aSKevin Wolf } 2298f18a834aSKevin Wolf 2299f18a834aSKevin Wolf if (ct->args) { 2300f18a834aSKevin Wolf printf("%s ", ct->args); 2301f18a834aSKevin Wolf } 2302f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2303f18a834aSKevin Wolf } 2304f18a834aSKevin Wolf 2305f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2306f18a834aSKevin Wolf { 2307f18a834aSKevin Wolf help_oneline(cmd, ct); 2308f18a834aSKevin Wolf if (ct->help) { 2309f18a834aSKevin Wolf ct->help(); 2310f18a834aSKevin Wolf } 2311f18a834aSKevin Wolf } 2312f18a834aSKevin Wolf 2313f18a834aSKevin Wolf static void help_all(void) 2314f18a834aSKevin Wolf { 2315f18a834aSKevin Wolf const cmdinfo_t *ct; 2316f18a834aSKevin Wolf 2317f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2318f18a834aSKevin Wolf help_oneline(ct->name, ct); 2319f18a834aSKevin Wolf } 2320f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2321f18a834aSKevin Wolf } 2322f18a834aSKevin Wolf 2323b32d7a39SMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2324f18a834aSKevin Wolf { 2325f18a834aSKevin Wolf const cmdinfo_t *ct; 2326f18a834aSKevin Wolf 2327f18a834aSKevin Wolf if (argc == 1) { 2328f18a834aSKevin Wolf help_all(); 2329b32d7a39SMax Reitz return 0; 2330f18a834aSKevin Wolf } 2331f18a834aSKevin Wolf 2332f18a834aSKevin Wolf ct = find_command(argv[1]); 2333f18a834aSKevin Wolf if (ct == NULL) { 2334f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2335b32d7a39SMax Reitz return -EINVAL; 2336f18a834aSKevin Wolf } 2337f18a834aSKevin Wolf 2338f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2339b32d7a39SMax Reitz return 0; 2340f18a834aSKevin Wolf } 2341f18a834aSKevin Wolf 2342f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2343f18a834aSKevin Wolf .name = "help", 2344f18a834aSKevin Wolf .altname = "?", 2345f18a834aSKevin Wolf .cfunc = help_f, 2346f18a834aSKevin Wolf .argmin = 0, 2347f18a834aSKevin Wolf .argmax = 1, 2348f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2349f18a834aSKevin Wolf .args = "[command]", 2350f18a834aSKevin Wolf .oneline = "help for one or all commands", 2351f18a834aSKevin Wolf }; 2352f18a834aSKevin Wolf 2353b32d7a39SMax Reitz int qemuio_command(BlockBackend *blk, const char *cmd) 2354dd583296SKevin Wolf { 235515afd94aSPaolo Bonzini AioContext *ctx; 2356dd583296SKevin Wolf char *input; 2357dd583296SKevin Wolf const cmdinfo_t *ct; 2358dd583296SKevin Wolf char **v; 2359dd583296SKevin Wolf int c; 2360b32d7a39SMax Reitz int ret = 0; 2361dd583296SKevin Wolf 2362dd583296SKevin Wolf input = g_strdup(cmd); 2363dd583296SKevin Wolf v = breakline(input, &c); 2364dd583296SKevin Wolf if (c) { 2365dd583296SKevin Wolf ct = find_command(v[0]); 2366dd583296SKevin Wolf if (ct) { 236715afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 236815afd94aSPaolo Bonzini aio_context_acquire(ctx); 2369b32d7a39SMax Reitz ret = command(blk, ct, c, v); 237015afd94aSPaolo Bonzini aio_context_release(ctx); 2371dd583296SKevin Wolf } else { 2372dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2373b32d7a39SMax Reitz ret = -EINVAL; 2374dd583296SKevin Wolf } 2375dd583296SKevin Wolf } 2376dd583296SKevin Wolf g_free(input); 2377dd583296SKevin Wolf g_free(v); 2378b32d7a39SMax Reitz 2379b32d7a39SMax Reitz return ret; 2380dd583296SKevin Wolf } 2381dd583296SKevin Wolf 2382797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2383797ac58cSKevin Wolf { 2384797ac58cSKevin Wolf /* initialize commands */ 2385c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2386c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2387c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2388c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2389c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2390c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2391c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2392c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2393c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2394c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2395c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2396c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2397c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2398c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2399c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 24005bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2401c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 24024cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2403c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2404c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2405c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2406cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 24070e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2408797ac58cSKevin Wolf } 2409