1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4093ea232SEric Blake * Copyright (C) 2009-2016 Red Hat, Inc. 5797ac58cSKevin Wolf * Copyright (c) 2003-2005 Silicon Graphics, Inc. 6797ac58cSKevin Wolf * 7797ac58cSKevin Wolf * This work is licensed under the terms of the GNU GPL, version 2 or later. 8797ac58cSKevin Wolf * See the COPYING file in the top-level directory. 9797ac58cSKevin Wolf */ 10797ac58cSKevin Wolf 1180c71a24SPeter Maydell #include "qemu/osdep.h" 12da34e65cSMarkus Armbruster #include "qapi/error.h" 133d21994fSKevin Wolf #include "qemu-io.h" 144c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 154c7b7e9bSMax Reitz #include "block/block.h" 164c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 17a8d8ecb7SMax Reitz #include "block/qapi.h" 18d49b6836SMarkus Armbruster #include "qemu/error-report.h" 196a1751b7SAlex Bligh #include "qemu/main-loop.h" 20cd33d02aSKevin Wolf #include "qemu/timer.h" 21a91f9584SFam Zheng #include "sysemu/block-backend.h" 22f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 23797ac58cSKevin Wolf 24797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 25797ac58cSKevin Wolf 26f9883880SStefan Weil bool qemuio_misalign; 27797ac58cSKevin Wolf 28c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 29c2cdf5c5SKevin Wolf static int ncmds; 30c2cdf5c5SKevin Wolf 31c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 32c2cdf5c5SKevin Wolf { 33c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 34c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 35c2cdf5c5SKevin Wolf } 36c2cdf5c5SKevin Wolf 37c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 38c2cdf5c5SKevin Wolf { 3902c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 40c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 41c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 42c2cdf5c5SKevin Wolf } 43c2cdf5c5SKevin Wolf 44c2cdf5c5SKevin Wolf int qemuio_command_usage(const cmdinfo_t *ci) 45c2cdf5c5SKevin Wolf { 46c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 47c2cdf5c5SKevin Wolf return 0; 48c2cdf5c5SKevin Wolf } 49c2cdf5c5SKevin Wolf 504c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 51c2cdf5c5SKevin Wolf { 52c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 53c2cdf5c5SKevin Wolf return 1; 54c2cdf5c5SKevin Wolf } 554c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 56c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 57c2cdf5c5SKevin Wolf return 0; 58c2cdf5c5SKevin Wolf } 59c2cdf5c5SKevin Wolf return 1; 60c2cdf5c5SKevin Wolf } 61c2cdf5c5SKevin Wolf 624c7b7e9bSMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 633d21994fSKevin Wolf char **argv) 64c2cdf5c5SKevin Wolf { 65c2cdf5c5SKevin Wolf char *cmd = argv[0]; 66c2cdf5c5SKevin Wolf 674c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 68c2cdf5c5SKevin Wolf return 0; 69c2cdf5c5SKevin Wolf } 70c2cdf5c5SKevin Wolf 71c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 72c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 73c2cdf5c5SKevin Wolf fprintf(stderr, 74c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 75c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 76c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 77c2cdf5c5SKevin Wolf fprintf(stderr, 78c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 79c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 80c2cdf5c5SKevin Wolf } else { 81c2cdf5c5SKevin Wolf fprintf(stderr, 82c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 83c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 84c2cdf5c5SKevin Wolf } 85c2cdf5c5SKevin Wolf return 0; 86c2cdf5c5SKevin Wolf } 87c2cdf5c5SKevin Wolf optind = 0; 884c7b7e9bSMax Reitz return ct->cfunc(blk, argc, argv); 89c2cdf5c5SKevin Wolf } 90c2cdf5c5SKevin Wolf 91c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 92c2cdf5c5SKevin Wolf { 93c2cdf5c5SKevin Wolf cmdinfo_t *ct; 94c2cdf5c5SKevin Wolf 95c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 96c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 97c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 98c2cdf5c5SKevin Wolf { 99c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 100c2cdf5c5SKevin Wolf } 101c2cdf5c5SKevin Wolf } 102c2cdf5c5SKevin Wolf return NULL; 103c2cdf5c5SKevin Wolf } 104c2cdf5c5SKevin Wolf 1054694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1064694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1074694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1084694020dSStefan Hajnoczi void *opaque) 1094694020dSStefan Hajnoczi { 1104694020dSStefan Hajnoczi cmdinfo_t *ct; 1114694020dSStefan Hajnoczi size_t input_len = strlen(input); 1124694020dSStefan Hajnoczi 1134694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1144694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1154694020dSStefan Hajnoczi fn(ct->name, opaque); 1164694020dSStefan Hajnoczi } 1174694020dSStefan Hajnoczi } 1184694020dSStefan Hajnoczi } 1194694020dSStefan Hajnoczi 120c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 121c2cdf5c5SKevin Wolf { 122c2cdf5c5SKevin Wolf int c = 0; 123c2cdf5c5SKevin Wolf char *p; 1245839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 125c2cdf5c5SKevin Wolf 126c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 127c2cdf5c5SKevin Wolf if (!*p) { 128c2cdf5c5SKevin Wolf continue; 129c2cdf5c5SKevin Wolf } 130c2cdf5c5SKevin Wolf c++; 13108193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 132c2cdf5c5SKevin Wolf rval[c - 1] = p; 133c2cdf5c5SKevin Wolf rval[c] = NULL; 134c2cdf5c5SKevin Wolf } 135c2cdf5c5SKevin Wolf *count = c; 136c2cdf5c5SKevin Wolf return rval; 137c2cdf5c5SKevin Wolf } 138c2cdf5c5SKevin Wolf 139797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 140797ac58cSKevin Wolf { 141797ac58cSKevin Wolf char *end; 142ef5a7885SJohn Snow int64_t ret; 143ef5a7885SJohn Snow 144ef5a7885SJohn Snow ret = qemu_strtosz_suffix(s, &end, QEMU_STRTOSZ_DEFSUFFIX_B); 145ef5a7885SJohn Snow if (*end != '\0') { 146ef5a7885SJohn Snow /* Detritus at the end of the string */ 147ef5a7885SJohn Snow return -EINVAL; 148ef5a7885SJohn Snow } 149ef5a7885SJohn Snow return ret; 150797ac58cSKevin Wolf } 151797ac58cSKevin Wolf 152a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 153a9ecfa00SJohn Snow { 154a9ecfa00SJohn Snow switch (rc) { 155a9ecfa00SJohn Snow case -EINVAL: 156a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 157a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 158a9ecfa00SJohn Snow break; 159a9ecfa00SJohn Snow case -ERANGE: 160a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 161a9ecfa00SJohn Snow break; 162a9ecfa00SJohn Snow default: 163a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 164a9ecfa00SJohn Snow } 165a9ecfa00SJohn Snow } 166a9ecfa00SJohn Snow 1670b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 1680b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 1690b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 1700b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 1710b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 1720b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 1730b613881SKevin Wolf 1740b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 1750b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 1760b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 1770b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 1780b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 1790b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 1800b613881SKevin Wolf 1810b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 1820b613881SKevin Wolf { 1830b613881SKevin Wolf char *trim; 1840b613881SKevin Wolf const char *suffix; 1850b613881SKevin Wolf 1860b613881SKevin Wolf if (value >= EXABYTES(1)) { 1870b613881SKevin Wolf suffix = " EiB"; 1880b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 1890b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 1900b613881SKevin Wolf suffix = " PiB"; 1910b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 1920b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 1930b613881SKevin Wolf suffix = " TiB"; 1940b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 1950b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 1960b613881SKevin Wolf suffix = " GiB"; 1970b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 1980b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 1990b613881SKevin Wolf suffix = " MiB"; 2000b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2010b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2020b613881SKevin Wolf suffix = " KiB"; 2030b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2040b613881SKevin Wolf } else { 2050b613881SKevin Wolf suffix = " bytes"; 2060b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2070b613881SKevin Wolf } 2080b613881SKevin Wolf 2090b613881SKevin Wolf trim = strstr(str, ".000"); 2100b613881SKevin Wolf if (trim) { 2110b613881SKevin Wolf strcpy(trim, suffix); 2120b613881SKevin Wolf } else { 2130b613881SKevin Wolf strcat(str, suffix); 2140b613881SKevin Wolf } 2150b613881SKevin Wolf } 2160b613881SKevin Wolf 2170b613881SKevin Wolf 2180b613881SKevin Wolf 2190b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2200b613881SKevin Wolf { 2210b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2220b613881SKevin Wolf if (t1.tv_usec < 0) { 2230b613881SKevin Wolf t1.tv_usec += 1000000; 2240b613881SKevin Wolf t1.tv_sec--; 2250b613881SKevin Wolf } 2260b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2270b613881SKevin Wolf return t1; 2280b613881SKevin Wolf } 2290b613881SKevin Wolf 2300b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2310b613881SKevin Wolf { 2320b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2330b613881SKevin Wolf } 2340b613881SKevin Wolf 2350b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2360b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2370b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2380b613881SKevin Wolf 2390b613881SKevin Wolf enum { 2400b613881SKevin Wolf DEFAULT_TIME = 0x0, 2410b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2420b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2430b613881SKevin Wolf }; 2440b613881SKevin Wolf 2450b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2460b613881SKevin Wolf { 2470b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2480b613881SKevin Wolf 2490b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2500b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2510b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2520b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2530b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2540b613881SKevin Wolf (unsigned int) (usec * 100)); 2550b613881SKevin Wolf return; 2560b613881SKevin Wolf } 2570b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2580b613881SKevin Wolf } 2590b613881SKevin Wolf 2600b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2610b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2620b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2630b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2640b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2650b613881SKevin Wolf (unsigned int) (usec * 100)); 2660b613881SKevin Wolf } else { 2670b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 2680b613881SKevin Wolf } 2690b613881SKevin Wolf } 2700b613881SKevin Wolf 271797ac58cSKevin Wolf /* 272797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 273797ac58cSKevin Wolf * 274797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 275797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 276797ac58cSKevin Wolf */ 277797ac58cSKevin Wolf static int parse_pattern(const char *arg) 278797ac58cSKevin Wolf { 279797ac58cSKevin Wolf char *endptr = NULL; 280797ac58cSKevin Wolf long pattern; 281797ac58cSKevin Wolf 282797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 283797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 284797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 285797ac58cSKevin Wolf return -1; 286797ac58cSKevin Wolf } 287797ac58cSKevin Wolf 288797ac58cSKevin Wolf return pattern; 289797ac58cSKevin Wolf } 290797ac58cSKevin Wolf 291797ac58cSKevin Wolf /* 292797ac58cSKevin Wolf * Memory allocation helpers. 293797ac58cSKevin Wolf * 294797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 295797ac58cSKevin Wolf * that is specified on the command line. 296797ac58cSKevin Wolf */ 297797ac58cSKevin Wolf 298797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 2994c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 300797ac58cSKevin Wolf { 301797ac58cSKevin Wolf void *buf; 302797ac58cSKevin Wolf 303797ac58cSKevin Wolf if (qemuio_misalign) { 304797ac58cSKevin Wolf len += MISALIGN_OFFSET; 305797ac58cSKevin Wolf } 3064c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 307797ac58cSKevin Wolf memset(buf, pattern, len); 308797ac58cSKevin Wolf if (qemuio_misalign) { 309797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 310797ac58cSKevin Wolf } 311797ac58cSKevin Wolf return buf; 312797ac58cSKevin Wolf } 313797ac58cSKevin Wolf 314797ac58cSKevin Wolf static void qemu_io_free(void *p) 315797ac58cSKevin Wolf { 316797ac58cSKevin Wolf if (qemuio_misalign) { 317797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 318797ac58cSKevin Wolf } 319797ac58cSKevin Wolf qemu_vfree(p); 320797ac58cSKevin Wolf } 321797ac58cSKevin Wolf 3229b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 323797ac58cSKevin Wolf { 3249b0beaf3SJohn Snow uint64_t i; 3259b0beaf3SJohn Snow int j; 326797ac58cSKevin Wolf const uint8_t *p; 327797ac58cSKevin Wolf 328797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 329797ac58cSKevin Wolf const uint8_t *s = p; 330797ac58cSKevin Wolf 331797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 332797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 333797ac58cSKevin Wolf printf("%02x ", *p); 334797ac58cSKevin Wolf } 335797ac58cSKevin Wolf printf(" "); 336797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 337797ac58cSKevin Wolf if (isalnum(*s)) { 338797ac58cSKevin Wolf printf("%c", *s); 339797ac58cSKevin Wolf } else { 340797ac58cSKevin Wolf printf("."); 341797ac58cSKevin Wolf } 342797ac58cSKevin Wolf } 343797ac58cSKevin Wolf printf("\n"); 344797ac58cSKevin Wolf } 345797ac58cSKevin Wolf } 346797ac58cSKevin Wolf 347797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 348dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 349797ac58cSKevin Wolf { 350797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 351797ac58cSKevin Wolf 352797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 353797ac58cSKevin Wolf if (!Cflag) { 354797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 355797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3569b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 357797ac58cSKevin Wolf op, total, count, offset); 358797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 359797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 360797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3619b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 362797ac58cSKevin Wolf total, cnt, ts, 363797ac58cSKevin Wolf tdiv((double)total, *t), 364797ac58cSKevin Wolf tdiv((double)cnt, *t)); 365797ac58cSKevin Wolf } 366797ac58cSKevin Wolf } 367797ac58cSKevin Wolf 368797ac58cSKevin Wolf /* 369797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 370797ac58cSKevin Wolf * vector matching it. 371797ac58cSKevin Wolf */ 372797ac58cSKevin Wolf static void * 3734c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 374797ac58cSKevin Wolf int pattern) 375797ac58cSKevin Wolf { 376797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 377797ac58cSKevin Wolf size_t count = 0; 378797ac58cSKevin Wolf void *buf = NULL; 379797ac58cSKevin Wolf void *p; 380797ac58cSKevin Wolf int i; 381797ac58cSKevin Wolf 382797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 383797ac58cSKevin Wolf char *arg = argv[i]; 384797ac58cSKevin Wolf int64_t len; 385797ac58cSKevin Wolf 386797ac58cSKevin Wolf len = cvtnum(arg); 387797ac58cSKevin Wolf if (len < 0) { 388a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 389797ac58cSKevin Wolf goto fail; 390797ac58cSKevin Wolf } 391797ac58cSKevin Wolf 392797ac58cSKevin Wolf /* should be SIZE_T_MAX, but that doesn't exist */ 393797ac58cSKevin Wolf if (len > INT_MAX) { 394a9ecfa00SJohn Snow printf("Argument '%s' exceeds maximum size %d\n", arg, INT_MAX); 395797ac58cSKevin Wolf goto fail; 396797ac58cSKevin Wolf } 397797ac58cSKevin Wolf 398797ac58cSKevin Wolf sizes[i] = len; 399797ac58cSKevin Wolf count += len; 400797ac58cSKevin Wolf } 401797ac58cSKevin Wolf 402797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 403797ac58cSKevin Wolf 4044c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 405797ac58cSKevin Wolf 406797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 407797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 408797ac58cSKevin Wolf p += sizes[i]; 409797ac58cSKevin Wolf } 410797ac58cSKevin Wolf 411797ac58cSKevin Wolf fail: 412797ac58cSKevin Wolf g_free(sizes); 413797ac58cSKevin Wolf return buf; 414797ac58cSKevin Wolf } 415797ac58cSKevin Wolf 4169b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 4179b0beaf3SJohn Snow int64_t count, int64_t *total) 418797ac58cSKevin Wolf { 4199b0beaf3SJohn Snow if (count > INT_MAX) { 4209b0beaf3SJohn Snow return -ERANGE; 4219b0beaf3SJohn Snow } 4229b0beaf3SJohn Snow 4234c7b7e9bSMax Reitz *total = blk_pread(blk, offset, (uint8_t *)buf, count); 424797ac58cSKevin Wolf if (*total < 0) { 425797ac58cSKevin Wolf return *total; 426797ac58cSKevin Wolf } 427797ac58cSKevin Wolf return 1; 428797ac58cSKevin Wolf } 429797ac58cSKevin Wolf 4309b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 431770e0e0eSEric Blake int64_t count, int flags, int64_t *total) 432797ac58cSKevin Wolf { 4339b0beaf3SJohn Snow if (count > INT_MAX) { 4349b0beaf3SJohn Snow return -ERANGE; 4359b0beaf3SJohn Snow } 4369b0beaf3SJohn Snow 437770e0e0eSEric Blake *total = blk_pwrite(blk, offset, (uint8_t *)buf, count, flags); 438797ac58cSKevin Wolf if (*total < 0) { 439797ac58cSKevin Wolf return *total; 440797ac58cSKevin Wolf } 441797ac58cSKevin Wolf return 1; 442797ac58cSKevin Wolf } 443797ac58cSKevin Wolf 444797ac58cSKevin Wolf typedef struct { 4454c7b7e9bSMax Reitz BlockBackend *blk; 446797ac58cSKevin Wolf int64_t offset; 4479b0beaf3SJohn Snow int64_t count; 4489b0beaf3SJohn Snow int64_t *total; 449770e0e0eSEric Blake int flags; 450797ac58cSKevin Wolf int ret; 451797ac58cSKevin Wolf bool done; 452797ac58cSKevin Wolf } CoWriteZeroes; 453797ac58cSKevin Wolf 454797ac58cSKevin Wolf static void coroutine_fn co_write_zeroes_entry(void *opaque) 455797ac58cSKevin Wolf { 456797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 457797ac58cSKevin Wolf 458770e0e0eSEric Blake data->ret = blk_co_write_zeroes(data->blk, data->offset, data->count, 459770e0e0eSEric Blake data->flags); 460797ac58cSKevin Wolf data->done = true; 461797ac58cSKevin Wolf if (data->ret < 0) { 462797ac58cSKevin Wolf *data->total = data->ret; 463797ac58cSKevin Wolf return; 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf 466797ac58cSKevin Wolf *data->total = data->count; 467797ac58cSKevin Wolf } 468797ac58cSKevin Wolf 4699b0beaf3SJohn Snow static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int64_t count, 470770e0e0eSEric Blake int flags, int64_t *total) 471797ac58cSKevin Wolf { 472797ac58cSKevin Wolf Coroutine *co; 473797ac58cSKevin Wolf CoWriteZeroes data = { 4744c7b7e9bSMax Reitz .blk = blk, 475797ac58cSKevin Wolf .offset = offset, 476797ac58cSKevin Wolf .count = count, 477797ac58cSKevin Wolf .total = total, 478770e0e0eSEric Blake .flags = flags, 479797ac58cSKevin Wolf .done = false, 480797ac58cSKevin Wolf }; 481797ac58cSKevin Wolf 4829b0beaf3SJohn Snow if (count >> BDRV_SECTOR_BITS > INT_MAX) { 4839b0beaf3SJohn Snow return -ERANGE; 4849b0beaf3SJohn Snow } 4859b0beaf3SJohn Snow 486797ac58cSKevin Wolf co = qemu_coroutine_create(co_write_zeroes_entry); 487797ac58cSKevin Wolf qemu_coroutine_enter(co, &data); 488797ac58cSKevin Wolf while (!data.done) { 4894c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 490797ac58cSKevin Wolf } 491797ac58cSKevin Wolf if (data.ret < 0) { 492797ac58cSKevin Wolf return data.ret; 493797ac58cSKevin Wolf } else { 494797ac58cSKevin Wolf return 1; 495797ac58cSKevin Wolf } 496797ac58cSKevin Wolf } 497797ac58cSKevin Wolf 4984c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 4999b0beaf3SJohn Snow int64_t count, int64_t *total) 500797ac58cSKevin Wolf { 501797ac58cSKevin Wolf int ret; 502797ac58cSKevin Wolf 5039b0beaf3SJohn Snow if (count >> 9 > INT_MAX) { 5049b0beaf3SJohn Snow return -ERANGE; 5059b0beaf3SJohn Snow } 5069b0beaf3SJohn Snow 5074c7b7e9bSMax Reitz ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9); 508797ac58cSKevin Wolf if (ret < 0) { 509797ac58cSKevin Wolf return ret; 510797ac58cSKevin Wolf } 511797ac58cSKevin Wolf *total = count; 512797ac58cSKevin Wolf return 1; 513797ac58cSKevin Wolf } 514797ac58cSKevin Wolf 5154c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5169b0beaf3SJohn Snow int64_t count, int64_t *total) 517797ac58cSKevin Wolf { 5189b0beaf3SJohn Snow if (count > INT_MAX) { 5199b0beaf3SJohn Snow return -ERANGE; 5209b0beaf3SJohn Snow } 5219b0beaf3SJohn Snow 5224c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 523797ac58cSKevin Wolf if (*total < 0) { 524797ac58cSKevin Wolf return *total; 525797ac58cSKevin Wolf } 526797ac58cSKevin Wolf return 1; 527797ac58cSKevin Wolf } 528797ac58cSKevin Wolf 5294c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5309b0beaf3SJohn Snow int64_t count, int64_t *total) 531797ac58cSKevin Wolf { 5329b0beaf3SJohn Snow if (count > INT_MAX) { 5339b0beaf3SJohn Snow return -ERANGE; 5349b0beaf3SJohn Snow } 5359b0beaf3SJohn Snow 5364c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 537797ac58cSKevin Wolf if (*total < 0) { 538797ac58cSKevin Wolf return *total; 539797ac58cSKevin Wolf } 540797ac58cSKevin Wolf return 1; 541797ac58cSKevin Wolf } 542797ac58cSKevin Wolf 543797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 544797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 545797ac58cSKevin Wolf { 546797ac58cSKevin Wolf *(int *)opaque = ret; 547797ac58cSKevin Wolf } 548797ac58cSKevin Wolf 5494c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 550797ac58cSKevin Wolf int64_t offset, int *total) 551797ac58cSKevin Wolf { 552797ac58cSKevin Wolf int async_ret = NOT_DONE; 553797ac58cSKevin Wolf 5547b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 555797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 556797ac58cSKevin Wolf main_loop_wait(false); 557797ac58cSKevin Wolf } 558797ac58cSKevin Wolf 559797ac58cSKevin Wolf *total = qiov->size; 560797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 561797ac58cSKevin Wolf } 562797ac58cSKevin Wolf 5634c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 564770e0e0eSEric Blake int64_t offset, int flags, int *total) 565797ac58cSKevin Wolf { 566797ac58cSKevin Wolf int async_ret = NOT_DONE; 567797ac58cSKevin Wolf 568770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 569797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 570797ac58cSKevin Wolf main_loop_wait(false); 571797ac58cSKevin Wolf } 572797ac58cSKevin Wolf 573797ac58cSKevin Wolf *total = qiov->size; 574797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 575797ac58cSKevin Wolf } 576797ac58cSKevin Wolf 577797ac58cSKevin Wolf struct multiwrite_async_ret { 578797ac58cSKevin Wolf int num_done; 579797ac58cSKevin Wolf int error; 580797ac58cSKevin Wolf }; 581797ac58cSKevin Wolf 582797ac58cSKevin Wolf static void multiwrite_cb(void *opaque, int ret) 583797ac58cSKevin Wolf { 584797ac58cSKevin Wolf struct multiwrite_async_ret *async_ret = opaque; 585797ac58cSKevin Wolf 586797ac58cSKevin Wolf async_ret->num_done++; 587797ac58cSKevin Wolf if (ret < 0) { 588797ac58cSKevin Wolf async_ret->error = ret; 589797ac58cSKevin Wolf } 590797ac58cSKevin Wolf } 591797ac58cSKevin Wolf 5924c7b7e9bSMax Reitz static int do_aio_multiwrite(BlockBackend *blk, BlockRequest* reqs, 593797ac58cSKevin Wolf int num_reqs, int *total) 594797ac58cSKevin Wolf { 595797ac58cSKevin Wolf int i, ret; 596797ac58cSKevin Wolf struct multiwrite_async_ret async_ret = { 597797ac58cSKevin Wolf .num_done = 0, 598797ac58cSKevin Wolf .error = 0, 599797ac58cSKevin Wolf }; 600797ac58cSKevin Wolf 601797ac58cSKevin Wolf *total = 0; 602797ac58cSKevin Wolf for (i = 0; i < num_reqs; i++) { 603797ac58cSKevin Wolf reqs[i].cb = multiwrite_cb; 604797ac58cSKevin Wolf reqs[i].opaque = &async_ret; 605797ac58cSKevin Wolf *total += reqs[i].qiov->size; 606797ac58cSKevin Wolf } 607797ac58cSKevin Wolf 6084c7b7e9bSMax Reitz ret = blk_aio_multiwrite(blk, reqs, num_reqs); 609797ac58cSKevin Wolf if (ret < 0) { 610797ac58cSKevin Wolf return ret; 611797ac58cSKevin Wolf } 612797ac58cSKevin Wolf 613797ac58cSKevin Wolf while (async_ret.num_done < num_reqs) { 614797ac58cSKevin Wolf main_loop_wait(false); 615797ac58cSKevin Wolf } 616797ac58cSKevin Wolf 617797ac58cSKevin Wolf return async_ret.error < 0 ? async_ret.error : 1; 618797ac58cSKevin Wolf } 619797ac58cSKevin Wolf 620797ac58cSKevin Wolf static void read_help(void) 621797ac58cSKevin Wolf { 622797ac58cSKevin Wolf printf( 623797ac58cSKevin Wolf "\n" 624797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 625797ac58cSKevin Wolf "\n" 626797ac58cSKevin Wolf " Example:\n" 627797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 628797ac58cSKevin Wolf "\n" 629797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 630797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 631797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 632797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 633797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 634093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 635797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 636797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 637797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 638797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 639797ac58cSKevin Wolf "\n"); 640797ac58cSKevin Wolf } 641797ac58cSKevin Wolf 6424c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 643797ac58cSKevin Wolf 644797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 645797ac58cSKevin Wolf .name = "read", 646797ac58cSKevin Wolf .altname = "r", 647797ac58cSKevin Wolf .cfunc = read_f, 648797ac58cSKevin Wolf .argmin = 2, 649797ac58cSKevin Wolf .argmax = -1, 650093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 651797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 652797ac58cSKevin Wolf .help = read_help, 653797ac58cSKevin Wolf }; 654797ac58cSKevin Wolf 6554c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 656797ac58cSKevin Wolf { 657797ac58cSKevin Wolf struct timeval t1, t2; 658093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 659dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 660797ac58cSKevin Wolf int c, cnt; 661797ac58cSKevin Wolf char *buf; 662797ac58cSKevin Wolf int64_t offset; 6639b0beaf3SJohn Snow int64_t count; 664797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6659b0beaf3SJohn Snow int64_t total = 0; 6669b0beaf3SJohn Snow int pattern = 0; 6679b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 668797ac58cSKevin Wolf 669b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 670797ac58cSKevin Wolf switch (c) { 671797ac58cSKevin Wolf case 'b': 672dc38852aSEric Blake bflag = true; 673797ac58cSKevin Wolf break; 674797ac58cSKevin Wolf case 'C': 675dc38852aSEric Blake Cflag = true; 676797ac58cSKevin Wolf break; 677797ac58cSKevin Wolf case 'l': 678dc38852aSEric Blake lflag = true; 679797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 680797ac58cSKevin Wolf if (pattern_count < 0) { 681a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 682797ac58cSKevin Wolf return 0; 683797ac58cSKevin Wolf } 684797ac58cSKevin Wolf break; 685797ac58cSKevin Wolf case 'p': 686093ea232SEric Blake /* Ignored for backwards compatibility */ 687797ac58cSKevin Wolf break; 688797ac58cSKevin Wolf case 'P': 689dc38852aSEric Blake Pflag = true; 690797ac58cSKevin Wolf pattern = parse_pattern(optarg); 691797ac58cSKevin Wolf if (pattern < 0) { 692797ac58cSKevin Wolf return 0; 693797ac58cSKevin Wolf } 694797ac58cSKevin Wolf break; 695797ac58cSKevin Wolf case 'q': 696dc38852aSEric Blake qflag = true; 697797ac58cSKevin Wolf break; 698797ac58cSKevin Wolf case 's': 699dc38852aSEric Blake sflag = true; 700797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 701797ac58cSKevin Wolf if (pattern_offset < 0) { 702a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 703797ac58cSKevin Wolf return 0; 704797ac58cSKevin Wolf } 705797ac58cSKevin Wolf break; 706797ac58cSKevin Wolf case 'v': 707dc38852aSEric Blake vflag = true; 708797ac58cSKevin Wolf break; 709797ac58cSKevin Wolf default: 710c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 711797ac58cSKevin Wolf } 712797ac58cSKevin Wolf } 713797ac58cSKevin Wolf 714797ac58cSKevin Wolf if (optind != argc - 2) { 715c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 716797ac58cSKevin Wolf } 717797ac58cSKevin Wolf 718797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 719797ac58cSKevin Wolf if (offset < 0) { 720a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 721797ac58cSKevin Wolf return 0; 722797ac58cSKevin Wolf } 723797ac58cSKevin Wolf 724797ac58cSKevin Wolf optind++; 725797ac58cSKevin Wolf count = cvtnum(argv[optind]); 726797ac58cSKevin Wolf if (count < 0) { 727a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 728797ac58cSKevin Wolf return 0; 7299b0beaf3SJohn Snow } else if (count > SIZE_MAX) { 7309b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7319b0beaf3SJohn Snow (uint64_t) SIZE_MAX, argv[optind]); 7329b0beaf3SJohn Snow return 0; 733797ac58cSKevin Wolf } 734797ac58cSKevin Wolf 735797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 736c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 737797ac58cSKevin Wolf } 738797ac58cSKevin Wolf 739797ac58cSKevin Wolf if (!lflag) { 740797ac58cSKevin Wolf pattern_count = count - pattern_offset; 741797ac58cSKevin Wolf } 742797ac58cSKevin Wolf 743797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 744797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 745797ac58cSKevin Wolf return 0; 746797ac58cSKevin Wolf } 747797ac58cSKevin Wolf 748093ea232SEric Blake if (bflag) { 749797ac58cSKevin Wolf if (offset & 0x1ff) { 750797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 751797ac58cSKevin Wolf offset); 752797ac58cSKevin Wolf return 0; 753797ac58cSKevin Wolf } 754797ac58cSKevin Wolf if (count & 0x1ff) { 7559b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 756797ac58cSKevin Wolf count); 757797ac58cSKevin Wolf return 0; 758797ac58cSKevin Wolf } 759797ac58cSKevin Wolf } 760797ac58cSKevin Wolf 7614c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 762797ac58cSKevin Wolf 763797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7647b3f9712SEric Blake if (bflag) { 7654c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 766797ac58cSKevin Wolf } else { 7677b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 768797ac58cSKevin Wolf } 769797ac58cSKevin Wolf gettimeofday(&t2, NULL); 770797ac58cSKevin Wolf 771797ac58cSKevin Wolf if (cnt < 0) { 772797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 773797ac58cSKevin Wolf goto out; 774797ac58cSKevin Wolf } 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); 783797ac58cSKevin Wolf } 784797ac58cSKevin Wolf g_free(cmp_buf); 785797ac58cSKevin Wolf } 786797ac58cSKevin Wolf 787797ac58cSKevin Wolf if (qflag) { 788797ac58cSKevin Wolf goto out; 789797ac58cSKevin Wolf } 790797ac58cSKevin Wolf 791797ac58cSKevin Wolf if (vflag) { 792797ac58cSKevin Wolf dump_buffer(buf, offset, count); 793797ac58cSKevin Wolf } 794797ac58cSKevin Wolf 795797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 796797ac58cSKevin Wolf t2 = tsub(t2, t1); 797797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 798797ac58cSKevin Wolf 799797ac58cSKevin Wolf out: 800797ac58cSKevin Wolf qemu_io_free(buf); 801797ac58cSKevin Wolf 802797ac58cSKevin Wolf return 0; 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 8244c7b7e9bSMax 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 8364c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 837797ac58cSKevin Wolf { 838797ac58cSKevin Wolf struct timeval t1, t2; 839dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 840797ac58cSKevin Wolf int c, cnt; 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) { 859797ac58cSKevin Wolf return 0; 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: 869c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 870797ac58cSKevin Wolf } 871797ac58cSKevin Wolf } 872797ac58cSKevin Wolf 873797ac58cSKevin Wolf if (optind > argc - 2) { 874c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 875797ac58cSKevin Wolf } 876797ac58cSKevin Wolf 877797ac58cSKevin Wolf 878797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 879797ac58cSKevin Wolf if (offset < 0) { 880a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 881797ac58cSKevin Wolf return 0; 882797ac58cSKevin Wolf } 883797ac58cSKevin Wolf optind++; 884797ac58cSKevin Wolf 885797ac58cSKevin Wolf nr_iov = argc - optind; 8864c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 887797ac58cSKevin Wolf if (buf == NULL) { 888797ac58cSKevin Wolf return 0; 889797ac58cSKevin Wolf } 890797ac58cSKevin Wolf 891797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8924c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 893797ac58cSKevin Wolf gettimeofday(&t2, NULL); 894797ac58cSKevin Wolf 895797ac58cSKevin Wolf if (cnt < 0) { 896797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 897797ac58cSKevin Wolf goto out; 898797ac58cSKevin Wolf } 899797ac58cSKevin Wolf 900797ac58cSKevin Wolf if (Pflag) { 901797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 902797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 903797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 904797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 905797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 906797ac58cSKevin Wolf } 907797ac58cSKevin Wolf g_free(cmp_buf); 908797ac58cSKevin Wolf } 909797ac58cSKevin Wolf 910797ac58cSKevin Wolf if (qflag) { 911797ac58cSKevin Wolf goto out; 912797ac58cSKevin Wolf } 913797ac58cSKevin Wolf 914797ac58cSKevin Wolf if (vflag) { 915797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 916797ac58cSKevin Wolf } 917797ac58cSKevin Wolf 918797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 919797ac58cSKevin Wolf t2 = tsub(t2, t1); 920797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 921797ac58cSKevin Wolf 922797ac58cSKevin Wolf out: 923797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 924797ac58cSKevin Wolf qemu_io_free(buf); 925797ac58cSKevin Wolf return 0; 926797ac58cSKevin Wolf } 927797ac58cSKevin Wolf 928797ac58cSKevin Wolf static void write_help(void) 929797ac58cSKevin Wolf { 930797ac58cSKevin Wolf printf( 931797ac58cSKevin Wolf "\n" 932797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 933797ac58cSKevin Wolf "\n" 934797ac58cSKevin Wolf " Example:\n" 935797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 936797ac58cSKevin Wolf "\n" 937797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 938797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 939797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9404c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 941770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 942093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 943797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 944797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 945797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 946*c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 9474c7b7e9bSMax Reitz " -z, -- write zeroes using blk_co_write_zeroes\n" 948797ac58cSKevin Wolf "\n"); 949797ac58cSKevin Wolf } 950797ac58cSKevin Wolf 9514c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 952797ac58cSKevin Wolf 953797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 954797ac58cSKevin Wolf .name = "write", 955797ac58cSKevin Wolf .altname = "w", 956797ac58cSKevin Wolf .cfunc = write_f, 957797ac58cSKevin Wolf .argmin = 2, 958797ac58cSKevin Wolf .argmax = -1, 959*c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 960797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 961797ac58cSKevin Wolf .help = write_help, 962797ac58cSKevin Wolf }; 963797ac58cSKevin Wolf 9644c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 965797ac58cSKevin Wolf { 966797ac58cSKevin Wolf struct timeval t1, t2; 967093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 968dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 969770e0e0eSEric Blake int flags = 0; 970797ac58cSKevin Wolf int c, cnt; 971797ac58cSKevin Wolf char *buf = NULL; 972797ac58cSKevin Wolf int64_t offset; 9739b0beaf3SJohn Snow int64_t count; 974797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9759b0beaf3SJohn Snow int64_t total = 0; 976797ac58cSKevin Wolf int pattern = 0xcd; 977797ac58cSKevin Wolf 978*c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 979797ac58cSKevin Wolf switch (c) { 980797ac58cSKevin Wolf case 'b': 981dc38852aSEric Blake bflag = true; 982797ac58cSKevin Wolf break; 983797ac58cSKevin Wolf case 'c': 984dc38852aSEric Blake cflag = true; 985797ac58cSKevin Wolf break; 986797ac58cSKevin Wolf case 'C': 987dc38852aSEric Blake Cflag = true; 988797ac58cSKevin Wolf break; 989770e0e0eSEric Blake case 'f': 990770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 991770e0e0eSEric Blake break; 992797ac58cSKevin Wolf case 'p': 993093ea232SEric Blake /* Ignored for backwards compatibility */ 994797ac58cSKevin Wolf break; 995797ac58cSKevin Wolf case 'P': 996dc38852aSEric Blake Pflag = true; 997797ac58cSKevin Wolf pattern = parse_pattern(optarg); 998797ac58cSKevin Wolf if (pattern < 0) { 999797ac58cSKevin Wolf return 0; 1000797ac58cSKevin Wolf } 1001797ac58cSKevin Wolf break; 1002797ac58cSKevin Wolf case 'q': 1003dc38852aSEric Blake qflag = true; 1004797ac58cSKevin Wolf break; 1005*c2e001ccSEric Blake case 'u': 1006*c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1007*c2e001ccSEric Blake break; 1008797ac58cSKevin Wolf case 'z': 1009dc38852aSEric Blake zflag = true; 1010797ac58cSKevin Wolf break; 1011797ac58cSKevin Wolf default: 1012c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 1013797ac58cSKevin Wolf } 1014797ac58cSKevin Wolf } 1015797ac58cSKevin Wolf 1016797ac58cSKevin Wolf if (optind != argc - 2) { 1017c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 1018797ac58cSKevin Wolf } 1019797ac58cSKevin Wolf 1020093ea232SEric Blake if (bflag && zflag) { 1021093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1022797ac58cSKevin Wolf return 0; 1023797ac58cSKevin Wolf } 1024797ac58cSKevin Wolf 1025770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1026770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1027770e0e0eSEric Blake return 0; 1028770e0e0eSEric Blake } 1029770e0e0eSEric Blake 1030*c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1031*c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1032*c2e001ccSEric Blake return 0; 1033*c2e001ccSEric Blake } 1034*c2e001ccSEric Blake 1035797ac58cSKevin Wolf if (zflag && Pflag) { 1036797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1037797ac58cSKevin Wolf return 0; 1038797ac58cSKevin Wolf } 1039797ac58cSKevin Wolf 1040797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1041797ac58cSKevin Wolf if (offset < 0) { 1042a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1043797ac58cSKevin Wolf return 0; 1044797ac58cSKevin Wolf } 1045797ac58cSKevin Wolf 1046797ac58cSKevin Wolf optind++; 1047797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1048797ac58cSKevin Wolf if (count < 0) { 1049a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1050797ac58cSKevin Wolf return 0; 10519b0beaf3SJohn Snow } else if (count > SIZE_MAX) { 10529b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10539b0beaf3SJohn Snow (uint64_t) SIZE_MAX, argv[optind]); 10549b0beaf3SJohn Snow return 0; 1055797ac58cSKevin Wolf } 1056797ac58cSKevin Wolf 1057093ea232SEric Blake if (bflag || cflag) { 1058797ac58cSKevin Wolf if (offset & 0x1ff) { 1059797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1060797ac58cSKevin Wolf offset); 1061797ac58cSKevin Wolf return 0; 1062797ac58cSKevin Wolf } 1063797ac58cSKevin Wolf 1064797ac58cSKevin Wolf if (count & 0x1ff) { 10659b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 1066797ac58cSKevin Wolf count); 1067797ac58cSKevin Wolf return 0; 1068797ac58cSKevin Wolf } 1069797ac58cSKevin Wolf } 1070797ac58cSKevin Wolf 1071797ac58cSKevin Wolf if (!zflag) { 10724c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1073797ac58cSKevin Wolf } 1074797ac58cSKevin Wolf 1075797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10767b3f9712SEric Blake if (bflag) { 10774c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1078797ac58cSKevin Wolf } else if (zflag) { 1079770e0e0eSEric Blake cnt = do_co_write_zeroes(blk, offset, count, flags, &total); 1080797ac58cSKevin Wolf } else if (cflag) { 10814c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1082797ac58cSKevin Wolf } else { 1083770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1084797ac58cSKevin Wolf } 1085797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1086797ac58cSKevin Wolf 1087797ac58cSKevin Wolf if (cnt < 0) { 1088797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1089797ac58cSKevin Wolf goto out; 1090797ac58cSKevin Wolf } 1091797ac58cSKevin Wolf 1092797ac58cSKevin Wolf if (qflag) { 1093797ac58cSKevin Wolf goto out; 1094797ac58cSKevin Wolf } 1095797ac58cSKevin Wolf 1096797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1097797ac58cSKevin Wolf t2 = tsub(t2, t1); 1098797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1099797ac58cSKevin Wolf 1100797ac58cSKevin Wolf out: 1101797ac58cSKevin Wolf if (!zflag) { 1102797ac58cSKevin Wolf qemu_io_free(buf); 1103797ac58cSKevin Wolf } 1104797ac58cSKevin Wolf 1105797ac58cSKevin Wolf return 0; 1106797ac58cSKevin Wolf } 1107797ac58cSKevin Wolf 1108797ac58cSKevin Wolf static void 1109797ac58cSKevin Wolf writev_help(void) 1110797ac58cSKevin Wolf { 1111797ac58cSKevin Wolf printf( 1112797ac58cSKevin Wolf "\n" 1113797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1114797ac58cSKevin Wolf "\n" 1115797ac58cSKevin Wolf " Example:\n" 11166e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1117797ac58cSKevin Wolf "\n" 1118797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1119797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1120797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1121797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1122770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1123797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1124797ac58cSKevin Wolf "\n"); 1125797ac58cSKevin Wolf } 1126797ac58cSKevin Wolf 11274c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1128797ac58cSKevin Wolf 1129797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1130797ac58cSKevin Wolf .name = "writev", 1131797ac58cSKevin Wolf .cfunc = writev_f, 1132797ac58cSKevin Wolf .argmin = 2, 1133797ac58cSKevin Wolf .argmax = -1, 1134770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1135797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1136797ac58cSKevin Wolf .help = writev_help, 1137797ac58cSKevin Wolf }; 1138797ac58cSKevin Wolf 11394c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1140797ac58cSKevin Wolf { 1141797ac58cSKevin Wolf struct timeval t1, t2; 1142dc38852aSEric Blake bool Cflag = false, qflag = false; 1143770e0e0eSEric Blake int flags = 0; 1144797ac58cSKevin Wolf int c, cnt; 1145797ac58cSKevin Wolf char *buf; 1146797ac58cSKevin Wolf int64_t offset; 1147797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1148797ac58cSKevin Wolf int total = 0; 1149797ac58cSKevin Wolf int nr_iov; 1150797ac58cSKevin Wolf int pattern = 0xcd; 1151797ac58cSKevin Wolf QEMUIOVector qiov; 1152797ac58cSKevin Wolf 1153b062ad86SEric Blake while ((c = getopt(argc, argv, "CqP:")) != -1) { 1154797ac58cSKevin Wolf switch (c) { 1155797ac58cSKevin Wolf case 'C': 1156dc38852aSEric Blake Cflag = true; 1157797ac58cSKevin Wolf break; 1158770e0e0eSEric Blake case 'f': 1159770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1160770e0e0eSEric Blake break; 1161797ac58cSKevin Wolf case 'q': 1162dc38852aSEric Blake qflag = true; 1163797ac58cSKevin Wolf break; 1164797ac58cSKevin Wolf case 'P': 1165797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1166797ac58cSKevin Wolf if (pattern < 0) { 1167797ac58cSKevin Wolf return 0; 1168797ac58cSKevin Wolf } 1169797ac58cSKevin Wolf break; 1170797ac58cSKevin Wolf default: 1171c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1172797ac58cSKevin Wolf } 1173797ac58cSKevin Wolf } 1174797ac58cSKevin Wolf 1175797ac58cSKevin Wolf if (optind > argc - 2) { 1176c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1177797ac58cSKevin Wolf } 1178797ac58cSKevin Wolf 1179797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1180797ac58cSKevin Wolf if (offset < 0) { 1181a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1182797ac58cSKevin Wolf return 0; 1183797ac58cSKevin Wolf } 1184797ac58cSKevin Wolf optind++; 1185797ac58cSKevin Wolf 1186797ac58cSKevin Wolf nr_iov = argc - optind; 11874c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1188797ac58cSKevin Wolf if (buf == NULL) { 1189797ac58cSKevin Wolf return 0; 1190797ac58cSKevin Wolf } 1191797ac58cSKevin Wolf 1192797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1193770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1194797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1195797ac58cSKevin Wolf 1196797ac58cSKevin Wolf if (cnt < 0) { 1197797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1198797ac58cSKevin Wolf goto out; 1199797ac58cSKevin Wolf } 1200797ac58cSKevin Wolf 1201797ac58cSKevin Wolf if (qflag) { 1202797ac58cSKevin Wolf goto out; 1203797ac58cSKevin Wolf } 1204797ac58cSKevin Wolf 1205797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1206797ac58cSKevin Wolf t2 = tsub(t2, t1); 1207797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1208797ac58cSKevin Wolf out: 1209797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1210797ac58cSKevin Wolf qemu_io_free(buf); 1211797ac58cSKevin Wolf return 0; 1212797ac58cSKevin Wolf } 1213797ac58cSKevin Wolf 1214797ac58cSKevin Wolf static void multiwrite_help(void) 1215797ac58cSKevin Wolf { 1216797ac58cSKevin Wolf printf( 1217797ac58cSKevin Wolf "\n" 1218797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers,\n" 1219797ac58cSKevin Wolf " in a batch of requests that may be merged by qemu\n" 1220797ac58cSKevin Wolf "\n" 1221797ac58cSKevin Wolf " Example:\n" 1222797ac58cSKevin Wolf " 'multiwrite 512 1k 1k ; 4k 1k'\n" 1223797ac58cSKevin Wolf " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" 1224797ac58cSKevin Wolf "\n" 1225797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1226797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" 1227797ac58cSKevin Wolf " by one for each request contained in the multiwrite command.\n" 1228797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1229797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1230797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1231797ac58cSKevin Wolf "\n"); 1232797ac58cSKevin Wolf } 1233797ac58cSKevin Wolf 12344c7b7e9bSMax Reitz static int multiwrite_f(BlockBackend *blk, int argc, char **argv); 1235797ac58cSKevin Wolf 1236797ac58cSKevin Wolf static const cmdinfo_t multiwrite_cmd = { 1237797ac58cSKevin Wolf .name = "multiwrite", 1238797ac58cSKevin Wolf .cfunc = multiwrite_f, 1239797ac58cSKevin Wolf .argmin = 2, 1240797ac58cSKevin Wolf .argmax = -1, 1241797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", 1242797ac58cSKevin Wolf .oneline = "issues multiple write requests at once", 1243797ac58cSKevin Wolf .help = multiwrite_help, 1244797ac58cSKevin Wolf }; 1245797ac58cSKevin Wolf 12464c7b7e9bSMax Reitz static int multiwrite_f(BlockBackend *blk, int argc, char **argv) 1247797ac58cSKevin Wolf { 1248797ac58cSKevin Wolf struct timeval t1, t2; 1249dc38852aSEric Blake bool Cflag = false, qflag = false; 1250797ac58cSKevin Wolf int c, cnt; 1251797ac58cSKevin Wolf char **buf; 1252797ac58cSKevin Wolf int64_t offset, first_offset = 0; 1253797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1254797ac58cSKevin Wolf int total = 0; 1255797ac58cSKevin Wolf int nr_iov; 1256797ac58cSKevin Wolf int nr_reqs; 1257797ac58cSKevin Wolf int pattern = 0xcd; 1258797ac58cSKevin Wolf QEMUIOVector *qiovs; 1259797ac58cSKevin Wolf int i; 1260797ac58cSKevin Wolf BlockRequest *reqs; 1261797ac58cSKevin Wolf 1262b062ad86SEric Blake while ((c = getopt(argc, argv, "CqP:")) != -1) { 1263797ac58cSKevin Wolf switch (c) { 1264797ac58cSKevin Wolf case 'C': 1265dc38852aSEric Blake Cflag = true; 1266797ac58cSKevin Wolf break; 1267797ac58cSKevin Wolf case 'q': 1268dc38852aSEric Blake qflag = true; 1269797ac58cSKevin Wolf break; 1270797ac58cSKevin Wolf case 'P': 1271797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1272797ac58cSKevin Wolf if (pattern < 0) { 1273797ac58cSKevin Wolf return 0; 1274797ac58cSKevin Wolf } 1275797ac58cSKevin Wolf break; 1276797ac58cSKevin Wolf default: 1277c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1278797ac58cSKevin Wolf } 1279797ac58cSKevin Wolf } 1280797ac58cSKevin Wolf 1281797ac58cSKevin Wolf if (optind > argc - 2) { 1282c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1283797ac58cSKevin Wolf } 1284797ac58cSKevin Wolf 1285797ac58cSKevin Wolf nr_reqs = 1; 1286797ac58cSKevin Wolf for (i = optind; i < argc; i++) { 1287797ac58cSKevin Wolf if (!strcmp(argv[i], ";")) { 1288797ac58cSKevin Wolf nr_reqs++; 1289797ac58cSKevin Wolf } 1290797ac58cSKevin Wolf } 1291797ac58cSKevin Wolf 129202c4f26bSMarkus Armbruster reqs = g_new0(BlockRequest, nr_reqs); 129302c4f26bSMarkus Armbruster buf = g_new0(char *, nr_reqs); 129402c4f26bSMarkus Armbruster qiovs = g_new(QEMUIOVector, nr_reqs); 1295797ac58cSKevin Wolf 1296797ac58cSKevin Wolf for (i = 0; i < nr_reqs && optind < argc; i++) { 1297797ac58cSKevin Wolf int j; 1298797ac58cSKevin Wolf 1299797ac58cSKevin Wolf /* Read the offset of the request */ 1300797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1301797ac58cSKevin Wolf if (offset < 0) { 1302a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1303797ac58cSKevin Wolf goto out; 1304797ac58cSKevin Wolf } 1305797ac58cSKevin Wolf optind++; 1306797ac58cSKevin Wolf 1307797ac58cSKevin Wolf if (offset & 0x1ff) { 1308797ac58cSKevin Wolf printf("offset %lld is not sector aligned\n", 1309797ac58cSKevin Wolf (long long)offset); 1310797ac58cSKevin Wolf goto out; 1311797ac58cSKevin Wolf } 1312797ac58cSKevin Wolf 1313797ac58cSKevin Wolf if (i == 0) { 1314797ac58cSKevin Wolf first_offset = offset; 1315797ac58cSKevin Wolf } 1316797ac58cSKevin Wolf 1317797ac58cSKevin Wolf /* Read lengths for qiov entries */ 1318797ac58cSKevin Wolf for (j = optind; j < argc; j++) { 1319797ac58cSKevin Wolf if (!strcmp(argv[j], ";")) { 1320797ac58cSKevin Wolf break; 1321797ac58cSKevin Wolf } 1322797ac58cSKevin Wolf } 1323797ac58cSKevin Wolf 1324797ac58cSKevin Wolf nr_iov = j - optind; 1325797ac58cSKevin Wolf 1326797ac58cSKevin Wolf /* Build request */ 13274c7b7e9bSMax Reitz buf[i] = create_iovec(blk, &qiovs[i], &argv[optind], nr_iov, pattern); 1328797ac58cSKevin Wolf if (buf[i] == NULL) { 1329797ac58cSKevin Wolf goto out; 1330797ac58cSKevin Wolf } 1331797ac58cSKevin Wolf 1332797ac58cSKevin Wolf reqs[i].qiov = &qiovs[i]; 1333797ac58cSKevin Wolf reqs[i].sector = offset >> 9; 1334797ac58cSKevin Wolf reqs[i].nb_sectors = reqs[i].qiov->size >> 9; 1335797ac58cSKevin Wolf 1336797ac58cSKevin Wolf optind = j + 1; 1337797ac58cSKevin Wolf 1338797ac58cSKevin Wolf pattern++; 1339797ac58cSKevin Wolf } 1340797ac58cSKevin Wolf 1341797ac58cSKevin Wolf /* If there were empty requests at the end, ignore them */ 1342797ac58cSKevin Wolf nr_reqs = i; 1343797ac58cSKevin Wolf 1344797ac58cSKevin Wolf gettimeofday(&t1, NULL); 13454c7b7e9bSMax Reitz cnt = do_aio_multiwrite(blk, reqs, nr_reqs, &total); 1346797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1347797ac58cSKevin Wolf 1348797ac58cSKevin Wolf if (cnt < 0) { 1349797ac58cSKevin Wolf printf("aio_multiwrite failed: %s\n", strerror(-cnt)); 1350797ac58cSKevin Wolf goto out; 1351797ac58cSKevin Wolf } 1352797ac58cSKevin Wolf 1353797ac58cSKevin Wolf if (qflag) { 1354797ac58cSKevin Wolf goto out; 1355797ac58cSKevin Wolf } 1356797ac58cSKevin Wolf 1357797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1358797ac58cSKevin Wolf t2 = tsub(t2, t1); 1359797ac58cSKevin Wolf print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); 1360797ac58cSKevin Wolf out: 1361797ac58cSKevin Wolf for (i = 0; i < nr_reqs; i++) { 1362797ac58cSKevin Wolf qemu_io_free(buf[i]); 1363797ac58cSKevin Wolf if (reqs[i].qiov != NULL) { 1364797ac58cSKevin Wolf qemu_iovec_destroy(&qiovs[i]); 1365797ac58cSKevin Wolf } 1366797ac58cSKevin Wolf } 1367797ac58cSKevin Wolf g_free(buf); 1368797ac58cSKevin Wolf g_free(reqs); 1369797ac58cSKevin Wolf g_free(qiovs); 1370797ac58cSKevin Wolf return 0; 1371797ac58cSKevin Wolf } 1372797ac58cSKevin Wolf 1373797ac58cSKevin Wolf struct aio_ctx { 13744c7b7e9bSMax Reitz BlockBackend *blk; 1375797ac58cSKevin Wolf QEMUIOVector qiov; 1376797ac58cSKevin Wolf int64_t offset; 1377797ac58cSKevin Wolf char *buf; 1378dc38852aSEric Blake bool qflag; 1379dc38852aSEric Blake bool vflag; 1380dc38852aSEric Blake bool Cflag; 1381dc38852aSEric Blake bool Pflag; 1382dc38852aSEric Blake bool zflag; 1383a91f9584SFam Zheng BlockAcctCookie acct; 1384797ac58cSKevin Wolf int pattern; 1385797ac58cSKevin Wolf struct timeval t1; 1386797ac58cSKevin Wolf }; 1387797ac58cSKevin Wolf 1388797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1389797ac58cSKevin Wolf { 1390797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1391797ac58cSKevin Wolf struct timeval t2; 1392797ac58cSKevin Wolf 1393797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1394797ac58cSKevin Wolf 1395797ac58cSKevin Wolf 1396797ac58cSKevin Wolf if (ret < 0) { 1397797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1398556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1399797ac58cSKevin Wolf goto out; 1400797ac58cSKevin Wolf } 1401797ac58cSKevin Wolf 14024c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1403a91f9584SFam Zheng 1404797ac58cSKevin Wolf if (ctx->qflag) { 1405797ac58cSKevin Wolf goto out; 1406797ac58cSKevin Wolf } 1407797ac58cSKevin Wolf 1408797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1409797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1410797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1411797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1412797ac58cSKevin Wolf out: 14135ceb7765SKevin Wolf if (!ctx->zflag) { 1414797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1415797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 14165ceb7765SKevin Wolf } 1417797ac58cSKevin Wolf g_free(ctx); 1418797ac58cSKevin Wolf } 1419797ac58cSKevin Wolf 1420797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1421797ac58cSKevin Wolf { 1422797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1423797ac58cSKevin Wolf struct timeval t2; 1424797ac58cSKevin Wolf 1425797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1426797ac58cSKevin Wolf 1427797ac58cSKevin Wolf if (ret < 0) { 1428797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1429556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1430797ac58cSKevin Wolf goto out; 1431797ac58cSKevin Wolf } 1432797ac58cSKevin Wolf 1433797ac58cSKevin Wolf if (ctx->Pflag) { 1434797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1435797ac58cSKevin Wolf 1436797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1437797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1438797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1439797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1440797ac58cSKevin Wolf } 1441797ac58cSKevin Wolf g_free(cmp_buf); 1442797ac58cSKevin Wolf } 1443797ac58cSKevin Wolf 14444c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1445a91f9584SFam Zheng 1446797ac58cSKevin Wolf if (ctx->qflag) { 1447797ac58cSKevin Wolf goto out; 1448797ac58cSKevin Wolf } 1449797ac58cSKevin Wolf 1450797ac58cSKevin Wolf if (ctx->vflag) { 1451797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1452797ac58cSKevin Wolf } 1453797ac58cSKevin Wolf 1454797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1455797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1456797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1457797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1458797ac58cSKevin Wolf out: 1459797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1460797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1461797ac58cSKevin Wolf g_free(ctx); 1462797ac58cSKevin Wolf } 1463797ac58cSKevin Wolf 1464797ac58cSKevin Wolf static void aio_read_help(void) 1465797ac58cSKevin Wolf { 1466797ac58cSKevin Wolf printf( 1467797ac58cSKevin Wolf "\n" 1468797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1469797ac58cSKevin Wolf "\n" 1470797ac58cSKevin Wolf " Example:\n" 1471797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1472797ac58cSKevin Wolf "\n" 1473797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1474797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1475797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1476797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1477797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1478797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 1479797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1480797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1481797ac58cSKevin Wolf "\n"); 1482797ac58cSKevin Wolf } 1483797ac58cSKevin Wolf 14844c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1485797ac58cSKevin Wolf 1486797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1487797ac58cSKevin Wolf .name = "aio_read", 1488797ac58cSKevin Wolf .cfunc = aio_read_f, 1489797ac58cSKevin Wolf .argmin = 2, 1490797ac58cSKevin Wolf .argmax = -1, 1491797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 1492797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1493797ac58cSKevin Wolf .help = aio_read_help, 1494797ac58cSKevin Wolf }; 1495797ac58cSKevin Wolf 14964c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1497797ac58cSKevin Wolf { 1498797ac58cSKevin Wolf int nr_iov, c; 1499797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1500797ac58cSKevin Wolf 15014c7b7e9bSMax Reitz ctx->blk = blk; 1502b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 1503797ac58cSKevin Wolf switch (c) { 1504797ac58cSKevin Wolf case 'C': 1505dc38852aSEric Blake ctx->Cflag = true; 1506797ac58cSKevin Wolf break; 1507797ac58cSKevin Wolf case 'P': 1508dc38852aSEric Blake ctx->Pflag = true; 1509797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1510797ac58cSKevin Wolf if (ctx->pattern < 0) { 1511797ac58cSKevin Wolf g_free(ctx); 1512797ac58cSKevin Wolf return 0; 1513797ac58cSKevin Wolf } 1514797ac58cSKevin Wolf break; 1515797ac58cSKevin Wolf case 'q': 1516dc38852aSEric Blake ctx->qflag = true; 1517797ac58cSKevin Wolf break; 1518797ac58cSKevin Wolf case 'v': 1519dc38852aSEric Blake ctx->vflag = true; 1520797ac58cSKevin Wolf break; 1521797ac58cSKevin Wolf default: 1522797ac58cSKevin Wolf g_free(ctx); 1523c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1524797ac58cSKevin Wolf } 1525797ac58cSKevin Wolf } 1526797ac58cSKevin Wolf 1527797ac58cSKevin Wolf if (optind > argc - 2) { 1528797ac58cSKevin Wolf g_free(ctx); 1529c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1530797ac58cSKevin Wolf } 1531797ac58cSKevin Wolf 1532797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1533797ac58cSKevin Wolf if (ctx->offset < 0) { 1534a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1535797ac58cSKevin Wolf g_free(ctx); 1536797ac58cSKevin Wolf return 0; 1537797ac58cSKevin Wolf } 1538797ac58cSKevin Wolf optind++; 1539797ac58cSKevin Wolf 1540797ac58cSKevin Wolf nr_iov = argc - optind; 15414c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1542797ac58cSKevin Wolf if (ctx->buf == NULL) { 1543556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1544797ac58cSKevin Wolf g_free(ctx); 1545797ac58cSKevin Wolf return 0; 1546797ac58cSKevin Wolf } 1547797ac58cSKevin Wolf 1548797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 15494c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15504c7b7e9bSMax Reitz BLOCK_ACCT_READ); 15517b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1552797ac58cSKevin Wolf return 0; 1553797ac58cSKevin Wolf } 1554797ac58cSKevin Wolf 1555797ac58cSKevin Wolf static void aio_write_help(void) 1556797ac58cSKevin Wolf { 1557797ac58cSKevin Wolf printf( 1558797ac58cSKevin Wolf "\n" 1559797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1560797ac58cSKevin Wolf " from multiple buffers\n" 1561797ac58cSKevin Wolf "\n" 1562797ac58cSKevin Wolf " Example:\n" 1563797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1564797ac58cSKevin Wolf "\n" 1565797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1566797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1567797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1568797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1569797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1570797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1571770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1572797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1573*c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 15745ceb7765SKevin Wolf " -z, -- write zeroes using blk_aio_write_zeroes\n" 1575797ac58cSKevin Wolf "\n"); 1576797ac58cSKevin Wolf } 1577797ac58cSKevin Wolf 15784c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1579797ac58cSKevin Wolf 1580797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1581797ac58cSKevin Wolf .name = "aio_write", 1582797ac58cSKevin Wolf .cfunc = aio_write_f, 1583797ac58cSKevin Wolf .argmin = 2, 1584797ac58cSKevin Wolf .argmax = -1, 1585*c2e001ccSEric Blake .args = "[-Cfquz] [-P pattern] off len [len..]", 1586797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1587797ac58cSKevin Wolf .help = aio_write_help, 1588797ac58cSKevin Wolf }; 1589797ac58cSKevin Wolf 15904c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1591797ac58cSKevin Wolf { 1592797ac58cSKevin Wolf int nr_iov, c; 1593797ac58cSKevin Wolf int pattern = 0xcd; 1594797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1595770e0e0eSEric Blake int flags = 0; 1596797ac58cSKevin Wolf 15974c7b7e9bSMax Reitz ctx->blk = blk; 1598770e0e0eSEric Blake while ((c = getopt(argc, argv, "CfqP:z")) != -1) { 1599797ac58cSKevin Wolf switch (c) { 1600797ac58cSKevin Wolf case 'C': 1601dc38852aSEric Blake ctx->Cflag = true; 1602797ac58cSKevin Wolf break; 1603770e0e0eSEric Blake case 'f': 1604770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1605770e0e0eSEric Blake break; 1606797ac58cSKevin Wolf case 'q': 1607dc38852aSEric Blake ctx->qflag = true; 1608797ac58cSKevin Wolf break; 1609*c2e001ccSEric Blake case 'u': 1610*c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1611*c2e001ccSEric Blake break; 1612797ac58cSKevin Wolf case 'P': 1613797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1614797ac58cSKevin Wolf if (pattern < 0) { 1615797ac58cSKevin Wolf g_free(ctx); 1616797ac58cSKevin Wolf return 0; 1617797ac58cSKevin Wolf } 1618797ac58cSKevin Wolf break; 16195ceb7765SKevin Wolf case 'z': 1620dc38852aSEric Blake ctx->zflag = true; 16215ceb7765SKevin Wolf break; 1622797ac58cSKevin Wolf default: 1623797ac58cSKevin Wolf g_free(ctx); 1624c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1625797ac58cSKevin Wolf } 1626797ac58cSKevin Wolf } 1627797ac58cSKevin Wolf 1628797ac58cSKevin Wolf if (optind > argc - 2) { 1629797ac58cSKevin Wolf g_free(ctx); 1630c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1631797ac58cSKevin Wolf } 1632797ac58cSKevin Wolf 16335ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 16345ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 16355ceb7765SKevin Wolf g_free(ctx); 16365ceb7765SKevin Wolf return 0; 16375ceb7765SKevin Wolf } 16385ceb7765SKevin Wolf 1639*c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1640*c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1641*c2e001ccSEric Blake return 0; 1642*c2e001ccSEric Blake } 1643*c2e001ccSEric Blake 16445ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 16455ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 16465ceb7765SKevin Wolf g_free(ctx); 16475ceb7765SKevin Wolf return 0; 16485ceb7765SKevin Wolf } 16495ceb7765SKevin Wolf 1650797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1651797ac58cSKevin Wolf if (ctx->offset < 0) { 1652a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1653797ac58cSKevin Wolf g_free(ctx); 1654797ac58cSKevin Wolf return 0; 1655797ac58cSKevin Wolf } 1656797ac58cSKevin Wolf optind++; 1657797ac58cSKevin Wolf 16585ceb7765SKevin Wolf if (ctx->zflag) { 16595ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 16605ceb7765SKevin Wolf if (count < 0) { 16615ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 16620e01b76eSKevin Wolf g_free(ctx); 16635ceb7765SKevin Wolf return 0; 16645ceb7765SKevin Wolf } 16655ceb7765SKevin Wolf 16665ceb7765SKevin Wolf ctx->qiov.size = count; 1667770e0e0eSEric Blake blk_aio_write_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1668770e0e0eSEric Blake ctx); 16695ceb7765SKevin Wolf } else { 1670797ac58cSKevin Wolf nr_iov = argc - optind; 16715ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 16725ceb7765SKevin Wolf pattern); 1673797ac58cSKevin Wolf if (ctx->buf == NULL) { 1674556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1675797ac58cSKevin Wolf g_free(ctx); 1676797ac58cSKevin Wolf return 0; 1677797ac58cSKevin Wolf } 1678797ac58cSKevin Wolf 1679797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 16804c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 16814c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 16825ceb7765SKevin Wolf 1683770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1684770e0e0eSEric Blake ctx); 16855ceb7765SKevin Wolf } 1686797ac58cSKevin Wolf return 0; 1687797ac58cSKevin Wolf } 1688797ac58cSKevin Wolf 16894c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1690797ac58cSKevin Wolf { 1691556c2b60SAlberto Garcia BlockAcctCookie cookie; 1692556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 16934c7b7e9bSMax Reitz blk_drain_all(); 1694556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1695797ac58cSKevin Wolf return 0; 1696797ac58cSKevin Wolf } 1697797ac58cSKevin Wolf 1698797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1699797ac58cSKevin Wolf .name = "aio_flush", 1700797ac58cSKevin Wolf .cfunc = aio_flush_f, 1701797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1702797ac58cSKevin Wolf }; 1703797ac58cSKevin Wolf 17044c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1705797ac58cSKevin Wolf { 17064c7b7e9bSMax Reitz blk_flush(blk); 1707797ac58cSKevin Wolf return 0; 1708797ac58cSKevin Wolf } 1709797ac58cSKevin Wolf 1710797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1711797ac58cSKevin Wolf .name = "flush", 1712797ac58cSKevin Wolf .altname = "f", 1713797ac58cSKevin Wolf .cfunc = flush_f, 1714797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1715797ac58cSKevin Wolf }; 1716797ac58cSKevin Wolf 17174c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1718797ac58cSKevin Wolf { 1719797ac58cSKevin Wolf int64_t offset; 1720797ac58cSKevin Wolf int ret; 1721797ac58cSKevin Wolf 1722797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1723797ac58cSKevin Wolf if (offset < 0) { 1724a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1725797ac58cSKevin Wolf return 0; 1726797ac58cSKevin Wolf } 1727797ac58cSKevin Wolf 17284c7b7e9bSMax Reitz ret = blk_truncate(blk, offset); 1729797ac58cSKevin Wolf if (ret < 0) { 1730797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1731797ac58cSKevin Wolf return 0; 1732797ac58cSKevin Wolf } 1733797ac58cSKevin Wolf 1734797ac58cSKevin Wolf return 0; 1735797ac58cSKevin Wolf } 1736797ac58cSKevin Wolf 1737797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1738797ac58cSKevin Wolf .name = "truncate", 1739797ac58cSKevin Wolf .altname = "t", 1740797ac58cSKevin Wolf .cfunc = truncate_f, 1741797ac58cSKevin Wolf .argmin = 1, 1742797ac58cSKevin Wolf .argmax = 1, 1743797ac58cSKevin Wolf .args = "off", 1744797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1745797ac58cSKevin Wolf }; 1746797ac58cSKevin Wolf 17474c7b7e9bSMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1748797ac58cSKevin Wolf { 1749797ac58cSKevin Wolf int64_t size; 1750797ac58cSKevin Wolf char s1[64]; 1751797ac58cSKevin Wolf 17524c7b7e9bSMax Reitz size = blk_getlength(blk); 1753797ac58cSKevin Wolf if (size < 0) { 1754797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1755797ac58cSKevin Wolf return 0; 1756797ac58cSKevin Wolf } 1757797ac58cSKevin Wolf 1758797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1759797ac58cSKevin Wolf printf("%s\n", s1); 1760797ac58cSKevin Wolf return 0; 1761797ac58cSKevin Wolf } 1762797ac58cSKevin Wolf 1763797ac58cSKevin Wolf 1764797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1765797ac58cSKevin Wolf .name = "length", 1766797ac58cSKevin Wolf .altname = "l", 1767797ac58cSKevin Wolf .cfunc = length_f, 1768797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1769797ac58cSKevin Wolf }; 1770797ac58cSKevin Wolf 1771797ac58cSKevin Wolf 17724c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1773797ac58cSKevin Wolf { 17744c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1775797ac58cSKevin Wolf BlockDriverInfo bdi; 1776a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1777797ac58cSKevin Wolf char s1[64], s2[64]; 1778797ac58cSKevin Wolf int ret; 1779797ac58cSKevin Wolf 1780797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1781797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1782797ac58cSKevin Wolf } 1783797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1784797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1785797ac58cSKevin Wolf } 1786797ac58cSKevin Wolf 1787797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1788797ac58cSKevin Wolf if (ret) { 1789797ac58cSKevin Wolf return 0; 1790797ac58cSKevin Wolf } 1791797ac58cSKevin Wolf 1792797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1793797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1794797ac58cSKevin Wolf 1795797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1796797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1797797ac58cSKevin Wolf 1798a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1799a8d8ecb7SMax Reitz if (spec_info) { 1800a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1801a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1802a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1803a8d8ecb7SMax Reitz } 1804a8d8ecb7SMax Reitz 1805797ac58cSKevin Wolf return 0; 1806797ac58cSKevin Wolf } 1807797ac58cSKevin Wolf 1808797ac58cSKevin Wolf 1809797ac58cSKevin Wolf 1810797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1811797ac58cSKevin Wolf .name = "info", 1812797ac58cSKevin Wolf .altname = "i", 1813797ac58cSKevin Wolf .cfunc = info_f, 1814797ac58cSKevin Wolf .oneline = "prints information about the current file", 1815797ac58cSKevin Wolf }; 1816797ac58cSKevin Wolf 1817797ac58cSKevin Wolf static void discard_help(void) 1818797ac58cSKevin Wolf { 1819797ac58cSKevin Wolf printf( 1820797ac58cSKevin Wolf "\n" 1821797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1822797ac58cSKevin Wolf "\n" 1823797ac58cSKevin Wolf " Example:\n" 1824797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1825797ac58cSKevin Wolf "\n" 1826797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1827797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1828797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1829797ac58cSKevin Wolf "\n"); 1830797ac58cSKevin Wolf } 1831797ac58cSKevin Wolf 18324c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1833797ac58cSKevin Wolf 1834797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1835797ac58cSKevin Wolf .name = "discard", 1836797ac58cSKevin Wolf .altname = "d", 1837797ac58cSKevin Wolf .cfunc = discard_f, 1838797ac58cSKevin Wolf .argmin = 2, 1839797ac58cSKevin Wolf .argmax = -1, 1840797ac58cSKevin Wolf .args = "[-Cq] off len", 1841797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1842797ac58cSKevin Wolf .help = discard_help, 1843797ac58cSKevin Wolf }; 1844797ac58cSKevin Wolf 18454c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1846797ac58cSKevin Wolf { 1847797ac58cSKevin Wolf struct timeval t1, t2; 1848dc38852aSEric Blake bool Cflag = false, qflag = false; 1849797ac58cSKevin Wolf int c, ret; 18509b0beaf3SJohn Snow int64_t offset, count; 1851797ac58cSKevin Wolf 1852b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1853797ac58cSKevin Wolf switch (c) { 1854797ac58cSKevin Wolf case 'C': 1855dc38852aSEric Blake Cflag = true; 1856797ac58cSKevin Wolf break; 1857797ac58cSKevin Wolf case 'q': 1858dc38852aSEric Blake qflag = true; 1859797ac58cSKevin Wolf break; 1860797ac58cSKevin Wolf default: 1861c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1862797ac58cSKevin Wolf } 1863797ac58cSKevin Wolf } 1864797ac58cSKevin Wolf 1865797ac58cSKevin Wolf if (optind != argc - 2) { 1866c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1867797ac58cSKevin Wolf } 1868797ac58cSKevin Wolf 1869797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1870797ac58cSKevin Wolf if (offset < 0) { 1871a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1872797ac58cSKevin Wolf return 0; 1873797ac58cSKevin Wolf } 1874797ac58cSKevin Wolf 1875797ac58cSKevin Wolf optind++; 1876797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1877797ac58cSKevin Wolf if (count < 0) { 1878a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1879797ac58cSKevin Wolf return 0; 18809b0beaf3SJohn Snow } else if (count >> BDRV_SECTOR_BITS > INT_MAX) { 18819b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 18829b0beaf3SJohn Snow (uint64_t)INT_MAX << BDRV_SECTOR_BITS, 18839b0beaf3SJohn Snow argv[optind]); 18849b0beaf3SJohn Snow return 0; 1885797ac58cSKevin Wolf } 1886797ac58cSKevin Wolf 1887797ac58cSKevin Wolf gettimeofday(&t1, NULL); 18884c7b7e9bSMax Reitz ret = blk_discard(blk, offset >> BDRV_SECTOR_BITS, 1889797ac58cSKevin Wolf count >> BDRV_SECTOR_BITS); 1890797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1891797ac58cSKevin Wolf 1892797ac58cSKevin Wolf if (ret < 0) { 1893797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1894797ac58cSKevin Wolf goto out; 1895797ac58cSKevin Wolf } 1896797ac58cSKevin Wolf 1897797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1898797ac58cSKevin Wolf if (!qflag) { 1899797ac58cSKevin Wolf t2 = tsub(t2, t1); 1900797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1901797ac58cSKevin Wolf } 1902797ac58cSKevin Wolf 1903797ac58cSKevin Wolf out: 1904797ac58cSKevin Wolf return 0; 1905797ac58cSKevin Wolf } 1906797ac58cSKevin Wolf 19074c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1908797ac58cSKevin Wolf { 19094c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 19109b0beaf3SJohn Snow int64_t offset, sector_num, nb_sectors, remaining; 1911797ac58cSKevin Wolf char s1[64]; 19129b0beaf3SJohn Snow int num, ret; 19139b0beaf3SJohn Snow int64_t sum_alloc; 1914797ac58cSKevin Wolf 1915797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1916797ac58cSKevin Wolf if (offset < 0) { 1917a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1918797ac58cSKevin Wolf return 0; 1919797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1920797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1921797ac58cSKevin Wolf offset); 1922797ac58cSKevin Wolf return 0; 1923797ac58cSKevin Wolf } 1924797ac58cSKevin Wolf 1925797ac58cSKevin Wolf if (argc == 3) { 1926797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1927797ac58cSKevin Wolf if (nb_sectors < 0) { 1928a9ecfa00SJohn Snow print_cvtnum_err(nb_sectors, argv[2]); 1929797ac58cSKevin Wolf return 0; 19309b0beaf3SJohn Snow } else if (nb_sectors > INT_MAX) { 19319b0beaf3SJohn Snow printf("length argument cannot exceed %d, given %s\n", 19329b0beaf3SJohn Snow INT_MAX, argv[2]); 19339b0beaf3SJohn Snow return 0; 1934797ac58cSKevin Wolf } 1935797ac58cSKevin Wolf } else { 1936797ac58cSKevin Wolf nb_sectors = 1; 1937797ac58cSKevin Wolf } 1938797ac58cSKevin Wolf 1939797ac58cSKevin Wolf remaining = nb_sectors; 1940797ac58cSKevin Wolf sum_alloc = 0; 1941797ac58cSKevin Wolf sector_num = offset >> 9; 1942797ac58cSKevin Wolf while (remaining) { 1943797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1944d663640cSPaolo Bonzini if (ret < 0) { 1945d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1946d663640cSPaolo Bonzini return 0; 1947d663640cSPaolo Bonzini } 1948797ac58cSKevin Wolf sector_num += num; 1949797ac58cSKevin Wolf remaining -= num; 1950797ac58cSKevin Wolf if (ret) { 1951797ac58cSKevin Wolf sum_alloc += num; 1952797ac58cSKevin Wolf } 1953797ac58cSKevin Wolf if (num == 0) { 1954797ac58cSKevin Wolf nb_sectors -= remaining; 1955797ac58cSKevin Wolf remaining = 0; 1956797ac58cSKevin Wolf } 1957797ac58cSKevin Wolf } 1958797ac58cSKevin Wolf 1959797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1960797ac58cSKevin Wolf 19619b0beaf3SJohn Snow printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n", 1962797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1963797ac58cSKevin Wolf return 0; 1964797ac58cSKevin Wolf } 1965797ac58cSKevin Wolf 1966797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1967797ac58cSKevin Wolf .name = "alloc", 1968797ac58cSKevin Wolf .altname = "a", 1969797ac58cSKevin Wolf .argmin = 1, 1970797ac58cSKevin Wolf .argmax = 2, 1971797ac58cSKevin Wolf .cfunc = alloc_f, 1972797ac58cSKevin Wolf .args = "off [sectors]", 1973797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1974797ac58cSKevin Wolf }; 1975797ac58cSKevin Wolf 1976797ac58cSKevin Wolf 1977797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1978797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1979797ac58cSKevin Wolf { 1980797ac58cSKevin Wolf int num, num_checked; 1981797ac58cSKevin Wolf int ret, firstret; 1982797ac58cSKevin Wolf 1983797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1984797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1985797ac58cSKevin Wolf if (ret < 0) { 1986797ac58cSKevin Wolf return ret; 1987797ac58cSKevin Wolf } 1988797ac58cSKevin Wolf 1989797ac58cSKevin Wolf firstret = ret; 1990797ac58cSKevin Wolf *pnum = num; 1991797ac58cSKevin Wolf 1992797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1993797ac58cSKevin Wolf sector_num += num; 1994797ac58cSKevin Wolf nb_sectors -= num; 1995797ac58cSKevin Wolf 1996797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1997797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 19984b25bbc4SMax Reitz if (ret == firstret && num) { 1999797ac58cSKevin Wolf *pnum += num; 2000797ac58cSKevin Wolf } else { 2001797ac58cSKevin Wolf break; 2002797ac58cSKevin Wolf } 2003797ac58cSKevin Wolf } 2004797ac58cSKevin Wolf 2005797ac58cSKevin Wolf return firstret; 2006797ac58cSKevin Wolf } 2007797ac58cSKevin Wolf 20084c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 2009797ac58cSKevin Wolf { 2010797ac58cSKevin Wolf int64_t offset; 20114c7b7e9bSMax Reitz int64_t nb_sectors, total_sectors; 2012797ac58cSKevin Wolf char s1[64]; 2013797ac58cSKevin Wolf int64_t num; 2014797ac58cSKevin Wolf int ret; 2015797ac58cSKevin Wolf const char *retstr; 2016797ac58cSKevin Wolf 2017797ac58cSKevin Wolf offset = 0; 20184c7b7e9bSMax Reitz total_sectors = blk_nb_sectors(blk); 20194c7b7e9bSMax Reitz if (total_sectors < 0) { 20204c7b7e9bSMax Reitz error_report("Failed to query image length: %s", 20214c7b7e9bSMax Reitz strerror(-total_sectors)); 20224c7b7e9bSMax Reitz return 0; 20234c7b7e9bSMax Reitz } 20244c7b7e9bSMax Reitz 20254c7b7e9bSMax Reitz nb_sectors = total_sectors; 2026797ac58cSKevin Wolf 2027797ac58cSKevin Wolf do { 20284c7b7e9bSMax Reitz ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num); 2029797ac58cSKevin Wolf if (ret < 0) { 2030797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 2031797ac58cSKevin Wolf return 0; 20324b25bbc4SMax Reitz } else if (!num) { 20334b25bbc4SMax Reitz error_report("Unexpected end of image"); 20344b25bbc4SMax Reitz return 0; 2035797ac58cSKevin Wolf } 2036797ac58cSKevin Wolf 2037797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 2038797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 2039797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 2040797ac58cSKevin Wolf "at offset %s (%d)\n", 2041797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 2042797ac58cSKevin Wolf 2043797ac58cSKevin Wolf offset += num; 2044797ac58cSKevin Wolf nb_sectors -= num; 20454c7b7e9bSMax Reitz } while (offset < total_sectors); 2046797ac58cSKevin Wolf 2047797ac58cSKevin Wolf return 0; 2048797ac58cSKevin Wolf } 2049797ac58cSKevin Wolf 2050797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 2051797ac58cSKevin Wolf .name = "map", 2052797ac58cSKevin Wolf .argmin = 0, 2053797ac58cSKevin Wolf .argmax = 0, 2054797ac58cSKevin Wolf .cfunc = map_f, 2055797ac58cSKevin Wolf .args = "", 2056797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 2057797ac58cSKevin Wolf }; 2058797ac58cSKevin Wolf 20595bbd2e59SKevin Wolf static void reopen_help(void) 20605bbd2e59SKevin Wolf { 20615bbd2e59SKevin Wolf printf( 20625bbd2e59SKevin Wolf "\n" 20635bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 20645bbd2e59SKevin Wolf "\n" 20655bbd2e59SKevin Wolf " Example:\n" 20665bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 20675bbd2e59SKevin Wolf "\n" 20685bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 20695bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 20705bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 20715bbd2e59SKevin Wolf "\n"); 20725bbd2e59SKevin Wolf } 20735bbd2e59SKevin Wolf 20745bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 20755bbd2e59SKevin Wolf 20765bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 20775bbd2e59SKevin Wolf .name = "reopen", 20785bbd2e59SKevin Wolf .merge_lists = true, 20795bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 20805bbd2e59SKevin Wolf .desc = { 20815bbd2e59SKevin Wolf /* no elements => accept any params */ 20825bbd2e59SKevin Wolf { /* end of list */ } 20835bbd2e59SKevin Wolf }, 20845bbd2e59SKevin Wolf }; 20855bbd2e59SKevin Wolf 20865bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 20875bbd2e59SKevin Wolf .name = "reopen", 20885bbd2e59SKevin Wolf .argmin = 0, 20895bbd2e59SKevin Wolf .argmax = -1, 20905bbd2e59SKevin Wolf .cfunc = reopen_f, 20915bbd2e59SKevin Wolf .args = "[-r] [-c cache] [-o options]", 20925bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 20935bbd2e59SKevin Wolf .help = reopen_help, 20945bbd2e59SKevin Wolf }; 20955bbd2e59SKevin Wolf 20965bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 20975bbd2e59SKevin Wolf { 20985bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 20995bbd2e59SKevin Wolf QemuOpts *qopts; 21005bbd2e59SKevin Wolf QDict *opts; 21015bbd2e59SKevin Wolf int c; 21025bbd2e59SKevin Wolf int flags = bs->open_flags; 210319dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 21045bbd2e59SKevin Wolf 21055bbd2e59SKevin Wolf BlockReopenQueue *brq; 21065bbd2e59SKevin Wolf Error *local_err = NULL; 21075bbd2e59SKevin Wolf 21085bbd2e59SKevin Wolf while ((c = getopt(argc, argv, "c:o:r")) != -1) { 21095bbd2e59SKevin Wolf switch (c) { 21105bbd2e59SKevin Wolf case 'c': 211119dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 21125bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 21135bbd2e59SKevin Wolf return 0; 21145bbd2e59SKevin Wolf } 21155bbd2e59SKevin Wolf break; 21165bbd2e59SKevin Wolf case 'o': 21175bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 21185bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21195bbd2e59SKevin Wolf return 0; 21205bbd2e59SKevin Wolf } 21215bbd2e59SKevin Wolf break; 21225bbd2e59SKevin Wolf case 'r': 21235bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 21245bbd2e59SKevin Wolf break; 21255bbd2e59SKevin Wolf default: 21265bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21275bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 21285bbd2e59SKevin Wolf } 21295bbd2e59SKevin Wolf } 21305bbd2e59SKevin Wolf 21315bbd2e59SKevin Wolf if (optind != argc) { 21325bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21335bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 21345bbd2e59SKevin Wolf } 21355bbd2e59SKevin Wolf 213619dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 213719dbecdcSKevin Wolf blk_get_attached_dev(blk)) 213819dbecdcSKevin Wolf { 213919dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 214019dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 214119dbecdcSKevin Wolf return 0; 214219dbecdcSKevin Wolf } 214319dbecdcSKevin Wolf 21445bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 21455bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 21465bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21475bbd2e59SKevin Wolf 21485bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 21495bbd2e59SKevin Wolf bdrv_reopen_multiple(brq, &local_err); 21505bbd2e59SKevin Wolf if (local_err) { 21515bbd2e59SKevin Wolf error_report_err(local_err); 215219dbecdcSKevin Wolf } else { 215319dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 21545bbd2e59SKevin Wolf } 21555bbd2e59SKevin Wolf 21565bbd2e59SKevin Wolf return 0; 21575bbd2e59SKevin Wolf } 21585bbd2e59SKevin Wolf 21594c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2160797ac58cSKevin Wolf { 2161797ac58cSKevin Wolf int ret; 2162797ac58cSKevin Wolf 21634c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2164797ac58cSKevin Wolf if (ret < 0) { 2165797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2166797ac58cSKevin Wolf } 2167797ac58cSKevin Wolf 2168797ac58cSKevin Wolf return 0; 2169797ac58cSKevin Wolf } 2170797ac58cSKevin Wolf 21714c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 21724cc70e93SFam Zheng { 21734cc70e93SFam Zheng int ret; 21744cc70e93SFam Zheng 21754c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 21764cc70e93SFam Zheng if (ret < 0) { 21774cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 21784cc70e93SFam Zheng } 21794cc70e93SFam Zheng 21804cc70e93SFam Zheng return 0; 21814cc70e93SFam Zheng } 21824cc70e93SFam Zheng 2183797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2184797ac58cSKevin Wolf .name = "break", 2185797ac58cSKevin Wolf .argmin = 2, 2186797ac58cSKevin Wolf .argmax = 2, 2187797ac58cSKevin Wolf .cfunc = break_f, 2188797ac58cSKevin Wolf .args = "event tag", 2189797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2190797ac58cSKevin Wolf "request as tag", 2191797ac58cSKevin Wolf }; 2192797ac58cSKevin Wolf 21934cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 21944cc70e93SFam Zheng .name = "remove_break", 21954cc70e93SFam Zheng .argmin = 1, 21964cc70e93SFam Zheng .argmax = 1, 21974cc70e93SFam Zheng .cfunc = remove_break_f, 21984cc70e93SFam Zheng .args = "tag", 21994cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 22004cc70e93SFam Zheng }; 22014cc70e93SFam Zheng 22024c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2203797ac58cSKevin Wolf { 2204797ac58cSKevin Wolf int ret; 2205797ac58cSKevin Wolf 22064c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2207797ac58cSKevin Wolf if (ret < 0) { 2208797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2209797ac58cSKevin Wolf } 2210797ac58cSKevin Wolf 2211797ac58cSKevin Wolf return 0; 2212797ac58cSKevin Wolf } 2213797ac58cSKevin Wolf 2214797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2215797ac58cSKevin Wolf .name = "resume", 2216797ac58cSKevin Wolf .argmin = 1, 2217797ac58cSKevin Wolf .argmax = 1, 2218797ac58cSKevin Wolf .cfunc = resume_f, 2219797ac58cSKevin Wolf .args = "tag", 2220797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2221797ac58cSKevin Wolf }; 2222797ac58cSKevin Wolf 22234c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2224797ac58cSKevin Wolf { 22254c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 22264c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2227797ac58cSKevin Wolf } 2228797ac58cSKevin Wolf 2229797ac58cSKevin Wolf return 0; 2230797ac58cSKevin Wolf } 2231797ac58cSKevin Wolf 2232797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2233797ac58cSKevin Wolf .name = "wait_break", 2234797ac58cSKevin Wolf .argmin = 1, 2235797ac58cSKevin Wolf .argmax = 1, 2236797ac58cSKevin Wolf .cfunc = wait_break_f, 2237797ac58cSKevin Wolf .args = "tag", 2238797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2239797ac58cSKevin Wolf }; 2240797ac58cSKevin Wolf 22414c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2242797ac58cSKevin Wolf { 2243797ac58cSKevin Wolf abort(); 2244797ac58cSKevin Wolf } 2245797ac58cSKevin Wolf 2246797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2247797ac58cSKevin Wolf .name = "abort", 2248797ac58cSKevin Wolf .cfunc = abort_f, 2249797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2250797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2251797ac58cSKevin Wolf }; 2252797ac58cSKevin Wolf 22530e82dc7bSMax Reitz static void sigraise_help(void) 22540e82dc7bSMax Reitz { 22550e82dc7bSMax Reitz printf( 22560e82dc7bSMax Reitz "\n" 22570e82dc7bSMax Reitz " raises the given signal\n" 22580e82dc7bSMax Reitz "\n" 22590e82dc7bSMax Reitz " Example:\n" 22600e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 22610e82dc7bSMax Reitz "\n" 22620e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 22630e82dc7bSMax Reitz " given to sigraise.\n" 22640e82dc7bSMax Reitz "\n", SIGTERM); 22650e82dc7bSMax Reitz } 22660e82dc7bSMax Reitz 22674c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 22680e82dc7bSMax Reitz 22690e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 22700e82dc7bSMax Reitz .name = "sigraise", 22710e82dc7bSMax Reitz .cfunc = sigraise_f, 22720e82dc7bSMax Reitz .argmin = 1, 22730e82dc7bSMax Reitz .argmax = 1, 22740e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 22750e82dc7bSMax Reitz .args = "signal", 22760e82dc7bSMax Reitz .oneline = "raises a signal", 22770e82dc7bSMax Reitz .help = sigraise_help, 22780e82dc7bSMax Reitz }; 22790e82dc7bSMax Reitz 22804c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 22810e82dc7bSMax Reitz { 22829b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 22830e82dc7bSMax Reitz if (sig < 0) { 2284a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 22850e82dc7bSMax Reitz return 0; 22869b0beaf3SJohn Snow } else if (sig > NSIG) { 22879b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 22889b0beaf3SJohn Snow argv[1]); 22899b0beaf3SJohn Snow return 0; 22900e82dc7bSMax Reitz } 22910e82dc7bSMax Reitz 22920e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 22930e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 22940e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 22950e82dc7bSMax Reitz fflush(stdout); 22960e82dc7bSMax Reitz fflush(stderr); 22970e82dc7bSMax Reitz 22980e82dc7bSMax Reitz raise(sig); 22990e82dc7bSMax Reitz return 0; 23000e82dc7bSMax Reitz } 23010e82dc7bSMax Reitz 2302cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2303cd33d02aSKevin Wolf { 2304cd33d02aSKevin Wolf bool *expired = opaque; 2305cd33d02aSKevin Wolf *expired = true; 2306cd33d02aSKevin Wolf } 2307cd33d02aSKevin Wolf 23084c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2309cd33d02aSKevin Wolf { 2310cd33d02aSKevin Wolf char *endptr; 2311cd33d02aSKevin Wolf long ms; 2312cd33d02aSKevin Wolf struct QEMUTimer *timer; 2313cd33d02aSKevin Wolf bool expired = false; 2314cd33d02aSKevin Wolf 2315cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2316cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2317cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2318cd33d02aSKevin Wolf return 0; 2319cd33d02aSKevin Wolf } 2320cd33d02aSKevin Wolf 2321cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2322cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2323cd33d02aSKevin Wolf 2324cd33d02aSKevin Wolf while (!expired) { 2325cd33d02aSKevin Wolf main_loop_wait(false); 2326cd33d02aSKevin Wolf } 2327cd33d02aSKevin Wolf 2328cd33d02aSKevin Wolf timer_free(timer); 2329cd33d02aSKevin Wolf 2330cd33d02aSKevin Wolf return 0; 2331cd33d02aSKevin Wolf } 2332cd33d02aSKevin Wolf 2333cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2334cd33d02aSKevin Wolf .name = "sleep", 2335cd33d02aSKevin Wolf .argmin = 1, 2336cd33d02aSKevin Wolf .argmax = 1, 2337cd33d02aSKevin Wolf .cfunc = sleep_f, 2338cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2339cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2340cd33d02aSKevin Wolf }; 2341cd33d02aSKevin Wolf 2342f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2343f18a834aSKevin Wolf { 2344f18a834aSKevin Wolf if (cmd) { 2345f18a834aSKevin Wolf printf("%s ", cmd); 2346f18a834aSKevin Wolf } else { 2347f18a834aSKevin Wolf printf("%s ", ct->name); 2348f18a834aSKevin Wolf if (ct->altname) { 2349f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2350f18a834aSKevin Wolf } 2351f18a834aSKevin Wolf } 2352f18a834aSKevin Wolf 2353f18a834aSKevin Wolf if (ct->args) { 2354f18a834aSKevin Wolf printf("%s ", ct->args); 2355f18a834aSKevin Wolf } 2356f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2357f18a834aSKevin Wolf } 2358f18a834aSKevin Wolf 2359f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2360f18a834aSKevin Wolf { 2361f18a834aSKevin Wolf help_oneline(cmd, ct); 2362f18a834aSKevin Wolf if (ct->help) { 2363f18a834aSKevin Wolf ct->help(); 2364f18a834aSKevin Wolf } 2365f18a834aSKevin Wolf } 2366f18a834aSKevin Wolf 2367f18a834aSKevin Wolf static void help_all(void) 2368f18a834aSKevin Wolf { 2369f18a834aSKevin Wolf const cmdinfo_t *ct; 2370f18a834aSKevin Wolf 2371f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2372f18a834aSKevin Wolf help_oneline(ct->name, ct); 2373f18a834aSKevin Wolf } 2374f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2375f18a834aSKevin Wolf } 2376f18a834aSKevin Wolf 23774c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2378f18a834aSKevin Wolf { 2379f18a834aSKevin Wolf const cmdinfo_t *ct; 2380f18a834aSKevin Wolf 2381f18a834aSKevin Wolf if (argc == 1) { 2382f18a834aSKevin Wolf help_all(); 2383f18a834aSKevin Wolf return 0; 2384f18a834aSKevin Wolf } 2385f18a834aSKevin Wolf 2386f18a834aSKevin Wolf ct = find_command(argv[1]); 2387f18a834aSKevin Wolf if (ct == NULL) { 2388f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2389f18a834aSKevin Wolf return 0; 2390f18a834aSKevin Wolf } 2391f18a834aSKevin Wolf 2392f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2393f18a834aSKevin Wolf return 0; 2394f18a834aSKevin Wolf } 2395f18a834aSKevin Wolf 2396f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2397f18a834aSKevin Wolf .name = "help", 2398f18a834aSKevin Wolf .altname = "?", 2399f18a834aSKevin Wolf .cfunc = help_f, 2400f18a834aSKevin Wolf .argmin = 0, 2401f18a834aSKevin Wolf .argmax = 1, 2402f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2403f18a834aSKevin Wolf .args = "[command]", 2404f18a834aSKevin Wolf .oneline = "help for one or all commands", 2405f18a834aSKevin Wolf }; 2406f18a834aSKevin Wolf 24074c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2408dd583296SKevin Wolf { 2409dd583296SKevin Wolf char *input; 2410dd583296SKevin Wolf const cmdinfo_t *ct; 2411dd583296SKevin Wolf char **v; 2412dd583296SKevin Wolf int c; 2413dd583296SKevin Wolf bool done = false; 2414dd583296SKevin Wolf 2415dd583296SKevin Wolf input = g_strdup(cmd); 2416dd583296SKevin Wolf v = breakline(input, &c); 2417dd583296SKevin Wolf if (c) { 2418dd583296SKevin Wolf ct = find_command(v[0]); 2419dd583296SKevin Wolf if (ct) { 24204c7b7e9bSMax Reitz done = command(blk, ct, c, v); 2421dd583296SKevin Wolf } else { 2422dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2423dd583296SKevin Wolf } 2424dd583296SKevin Wolf } 2425dd583296SKevin Wolf g_free(input); 2426dd583296SKevin Wolf g_free(v); 2427dd583296SKevin Wolf 2428dd583296SKevin Wolf return done; 2429dd583296SKevin Wolf } 2430dd583296SKevin Wolf 2431797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2432797ac58cSKevin Wolf { 2433797ac58cSKevin Wolf /* initialize commands */ 2434c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2435c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2436c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2437c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2438c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2439c2cdf5c5SKevin Wolf qemuio_add_command(&multiwrite_cmd); 2440c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2441c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2442c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2443c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2444c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2445c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2446c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2447c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2448c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2449c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 24505bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2451c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 24524cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2453c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2454c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2455c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2456cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 24570e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2458797ac58cSKevin Wolf } 2459