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 static void read_help(void) 578797ac58cSKevin Wolf { 579797ac58cSKevin Wolf printf( 580797ac58cSKevin Wolf "\n" 581797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 582797ac58cSKevin Wolf "\n" 583797ac58cSKevin Wolf " Example:\n" 584797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 585797ac58cSKevin Wolf "\n" 586797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 587797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 588797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 589797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 590797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 591093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 592797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 593797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 594797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 595797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 596797ac58cSKevin Wolf "\n"); 597797ac58cSKevin Wolf } 598797ac58cSKevin Wolf 5994c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 600797ac58cSKevin Wolf 601797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 602797ac58cSKevin Wolf .name = "read", 603797ac58cSKevin Wolf .altname = "r", 604797ac58cSKevin Wolf .cfunc = read_f, 605797ac58cSKevin Wolf .argmin = 2, 606797ac58cSKevin Wolf .argmax = -1, 607093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 608797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 609797ac58cSKevin Wolf .help = read_help, 610797ac58cSKevin Wolf }; 611797ac58cSKevin Wolf 6124c7b7e9bSMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 613797ac58cSKevin Wolf { 614797ac58cSKevin Wolf struct timeval t1, t2; 615093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 616dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 617797ac58cSKevin Wolf int c, cnt; 618797ac58cSKevin Wolf char *buf; 619797ac58cSKevin Wolf int64_t offset; 6209b0beaf3SJohn Snow int64_t count; 621797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6229b0beaf3SJohn Snow int64_t total = 0; 6239b0beaf3SJohn Snow int pattern = 0; 6249b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 625797ac58cSKevin Wolf 626b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 627797ac58cSKevin Wolf switch (c) { 628797ac58cSKevin Wolf case 'b': 629dc38852aSEric Blake bflag = true; 630797ac58cSKevin Wolf break; 631797ac58cSKevin Wolf case 'C': 632dc38852aSEric Blake Cflag = true; 633797ac58cSKevin Wolf break; 634797ac58cSKevin Wolf case 'l': 635dc38852aSEric Blake lflag = true; 636797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 637797ac58cSKevin Wolf if (pattern_count < 0) { 638a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 639797ac58cSKevin Wolf return 0; 640797ac58cSKevin Wolf } 641797ac58cSKevin Wolf break; 642797ac58cSKevin Wolf case 'p': 643093ea232SEric Blake /* Ignored for backwards compatibility */ 644797ac58cSKevin Wolf break; 645797ac58cSKevin Wolf case 'P': 646dc38852aSEric Blake Pflag = true; 647797ac58cSKevin Wolf pattern = parse_pattern(optarg); 648797ac58cSKevin Wolf if (pattern < 0) { 649797ac58cSKevin Wolf return 0; 650797ac58cSKevin Wolf } 651797ac58cSKevin Wolf break; 652797ac58cSKevin Wolf case 'q': 653dc38852aSEric Blake qflag = true; 654797ac58cSKevin Wolf break; 655797ac58cSKevin Wolf case 's': 656dc38852aSEric Blake sflag = true; 657797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 658797ac58cSKevin Wolf if (pattern_offset < 0) { 659a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 660797ac58cSKevin Wolf return 0; 661797ac58cSKevin Wolf } 662797ac58cSKevin Wolf break; 663797ac58cSKevin Wolf case 'v': 664dc38852aSEric Blake vflag = true; 665797ac58cSKevin Wolf break; 666797ac58cSKevin Wolf default: 667c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 668797ac58cSKevin Wolf } 669797ac58cSKevin Wolf } 670797ac58cSKevin Wolf 671797ac58cSKevin Wolf if (optind != argc - 2) { 672c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 673797ac58cSKevin Wolf } 674797ac58cSKevin Wolf 675797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 676797ac58cSKevin Wolf if (offset < 0) { 677a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 678797ac58cSKevin Wolf return 0; 679797ac58cSKevin Wolf } 680797ac58cSKevin Wolf 681797ac58cSKevin Wolf optind++; 682797ac58cSKevin Wolf count = cvtnum(argv[optind]); 683797ac58cSKevin Wolf if (count < 0) { 684a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 685797ac58cSKevin Wolf return 0; 6869b0beaf3SJohn Snow } else if (count > SIZE_MAX) { 6879b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 6889b0beaf3SJohn Snow (uint64_t) SIZE_MAX, argv[optind]); 6899b0beaf3SJohn Snow return 0; 690797ac58cSKevin Wolf } 691797ac58cSKevin Wolf 692797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 693c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 694797ac58cSKevin Wolf } 695797ac58cSKevin Wolf 696797ac58cSKevin Wolf if (!lflag) { 697797ac58cSKevin Wolf pattern_count = count - pattern_offset; 698797ac58cSKevin Wolf } 699797ac58cSKevin Wolf 700797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 701797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 702797ac58cSKevin Wolf return 0; 703797ac58cSKevin Wolf } 704797ac58cSKevin Wolf 705093ea232SEric Blake if (bflag) { 706797ac58cSKevin Wolf if (offset & 0x1ff) { 707797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 708797ac58cSKevin Wolf offset); 709797ac58cSKevin Wolf return 0; 710797ac58cSKevin Wolf } 711797ac58cSKevin Wolf if (count & 0x1ff) { 7129b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 713797ac58cSKevin Wolf count); 714797ac58cSKevin Wolf return 0; 715797ac58cSKevin Wolf } 716797ac58cSKevin Wolf } 717797ac58cSKevin Wolf 7184c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 719797ac58cSKevin Wolf 720797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7217b3f9712SEric Blake if (bflag) { 7224c7b7e9bSMax Reitz cnt = do_load_vmstate(blk, buf, offset, count, &total); 723797ac58cSKevin Wolf } else { 7247b3f9712SEric Blake cnt = do_pread(blk, buf, offset, count, &total); 725797ac58cSKevin Wolf } 726797ac58cSKevin Wolf gettimeofday(&t2, NULL); 727797ac58cSKevin Wolf 728797ac58cSKevin Wolf if (cnt < 0) { 729797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 730797ac58cSKevin Wolf goto out; 731797ac58cSKevin Wolf } 732797ac58cSKevin Wolf 733797ac58cSKevin Wolf if (Pflag) { 734797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 735797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 736797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 737797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7389b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 739797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 740797ac58cSKevin Wolf } 741797ac58cSKevin Wolf g_free(cmp_buf); 742797ac58cSKevin Wolf } 743797ac58cSKevin Wolf 744797ac58cSKevin Wolf if (qflag) { 745797ac58cSKevin Wolf goto out; 746797ac58cSKevin Wolf } 747797ac58cSKevin Wolf 748797ac58cSKevin Wolf if (vflag) { 749797ac58cSKevin Wolf dump_buffer(buf, offset, count); 750797ac58cSKevin Wolf } 751797ac58cSKevin Wolf 752797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 753797ac58cSKevin Wolf t2 = tsub(t2, t1); 754797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 755797ac58cSKevin Wolf 756797ac58cSKevin Wolf out: 757797ac58cSKevin Wolf qemu_io_free(buf); 758797ac58cSKevin Wolf 759797ac58cSKevin Wolf return 0; 760797ac58cSKevin Wolf } 761797ac58cSKevin Wolf 762797ac58cSKevin Wolf static void readv_help(void) 763797ac58cSKevin Wolf { 764797ac58cSKevin Wolf printf( 765797ac58cSKevin Wolf "\n" 766797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 767797ac58cSKevin Wolf "\n" 768797ac58cSKevin Wolf " Example:\n" 769797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 770797ac58cSKevin Wolf "\n" 771797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 772797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 773797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 774797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 775797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 776797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 777797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 778797ac58cSKevin Wolf "\n"); 779797ac58cSKevin Wolf } 780797ac58cSKevin Wolf 7814c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 782797ac58cSKevin Wolf 783797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 784797ac58cSKevin Wolf .name = "readv", 785797ac58cSKevin Wolf .cfunc = readv_f, 786797ac58cSKevin Wolf .argmin = 2, 787797ac58cSKevin Wolf .argmax = -1, 788797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 789797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 790797ac58cSKevin Wolf .help = readv_help, 791797ac58cSKevin Wolf }; 792797ac58cSKevin Wolf 7934c7b7e9bSMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 794797ac58cSKevin Wolf { 795797ac58cSKevin Wolf struct timeval t1, t2; 796dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 797797ac58cSKevin Wolf int c, cnt; 798797ac58cSKevin Wolf char *buf; 799797ac58cSKevin Wolf int64_t offset; 800797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 801797ac58cSKevin Wolf int total = 0; 802797ac58cSKevin Wolf int nr_iov; 803797ac58cSKevin Wolf QEMUIOVector qiov; 804797ac58cSKevin Wolf int pattern = 0; 805dc38852aSEric Blake bool Pflag = false; 806797ac58cSKevin Wolf 807b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 808797ac58cSKevin Wolf switch (c) { 809797ac58cSKevin Wolf case 'C': 810dc38852aSEric Blake Cflag = true; 811797ac58cSKevin Wolf break; 812797ac58cSKevin Wolf case 'P': 813dc38852aSEric Blake Pflag = true; 814797ac58cSKevin Wolf pattern = parse_pattern(optarg); 815797ac58cSKevin Wolf if (pattern < 0) { 816797ac58cSKevin Wolf return 0; 817797ac58cSKevin Wolf } 818797ac58cSKevin Wolf break; 819797ac58cSKevin Wolf case 'q': 820dc38852aSEric Blake qflag = true; 821797ac58cSKevin Wolf break; 822797ac58cSKevin Wolf case 'v': 823dc38852aSEric Blake vflag = true; 824797ac58cSKevin Wolf break; 825797ac58cSKevin Wolf default: 826c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 827797ac58cSKevin Wolf } 828797ac58cSKevin Wolf } 829797ac58cSKevin Wolf 830797ac58cSKevin Wolf if (optind > argc - 2) { 831c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 832797ac58cSKevin Wolf } 833797ac58cSKevin Wolf 834797ac58cSKevin Wolf 835797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 836797ac58cSKevin Wolf if (offset < 0) { 837a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 838797ac58cSKevin Wolf return 0; 839797ac58cSKevin Wolf } 840797ac58cSKevin Wolf optind++; 841797ac58cSKevin Wolf 842797ac58cSKevin Wolf nr_iov = argc - optind; 8434c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 844797ac58cSKevin Wolf if (buf == NULL) { 845797ac58cSKevin Wolf return 0; 846797ac58cSKevin Wolf } 847797ac58cSKevin Wolf 848797ac58cSKevin Wolf gettimeofday(&t1, NULL); 8494c7b7e9bSMax Reitz cnt = do_aio_readv(blk, &qiov, offset, &total); 850797ac58cSKevin Wolf gettimeofday(&t2, NULL); 851797ac58cSKevin Wolf 852797ac58cSKevin Wolf if (cnt < 0) { 853797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 854797ac58cSKevin Wolf goto out; 855797ac58cSKevin Wolf } 856797ac58cSKevin Wolf 857797ac58cSKevin Wolf if (Pflag) { 858797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 859797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 860797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 861797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 862797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 863797ac58cSKevin Wolf } 864797ac58cSKevin Wolf g_free(cmp_buf); 865797ac58cSKevin Wolf } 866797ac58cSKevin Wolf 867797ac58cSKevin Wolf if (qflag) { 868797ac58cSKevin Wolf goto out; 869797ac58cSKevin Wolf } 870797ac58cSKevin Wolf 871797ac58cSKevin Wolf if (vflag) { 872797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 873797ac58cSKevin Wolf } 874797ac58cSKevin Wolf 875797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 876797ac58cSKevin Wolf t2 = tsub(t2, t1); 877797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 878797ac58cSKevin Wolf 879797ac58cSKevin Wolf out: 880797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 881797ac58cSKevin Wolf qemu_io_free(buf); 882797ac58cSKevin Wolf return 0; 883797ac58cSKevin Wolf } 884797ac58cSKevin Wolf 885797ac58cSKevin Wolf static void write_help(void) 886797ac58cSKevin Wolf { 887797ac58cSKevin Wolf printf( 888797ac58cSKevin Wolf "\n" 889797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 890797ac58cSKevin Wolf "\n" 891797ac58cSKevin Wolf " Example:\n" 892797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 893797ac58cSKevin Wolf "\n" 894797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 895797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 896797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 8974c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 898770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 899093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 900797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 901797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 902797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 903c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 9044c7b7e9bSMax Reitz " -z, -- write zeroes using blk_co_write_zeroes\n" 905797ac58cSKevin Wolf "\n"); 906797ac58cSKevin Wolf } 907797ac58cSKevin Wolf 9084c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 909797ac58cSKevin Wolf 910797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 911797ac58cSKevin Wolf .name = "write", 912797ac58cSKevin Wolf .altname = "w", 913797ac58cSKevin Wolf .cfunc = write_f, 914797ac58cSKevin Wolf .argmin = 2, 915797ac58cSKevin Wolf .argmax = -1, 916c2e001ccSEric Blake .args = "[-bcCfquz] [-P pattern] off len", 917797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 918797ac58cSKevin Wolf .help = write_help, 919797ac58cSKevin Wolf }; 920797ac58cSKevin Wolf 9214c7b7e9bSMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 922797ac58cSKevin Wolf { 923797ac58cSKevin Wolf struct timeval t1, t2; 924093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 925dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 926770e0e0eSEric Blake int flags = 0; 927797ac58cSKevin Wolf int c, cnt; 928797ac58cSKevin Wolf char *buf = NULL; 929797ac58cSKevin Wolf int64_t offset; 9309b0beaf3SJohn Snow int64_t count; 931797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9329b0beaf3SJohn Snow int64_t total = 0; 933797ac58cSKevin Wolf int pattern = 0xcd; 934797ac58cSKevin Wolf 935c2e001ccSEric Blake while ((c = getopt(argc, argv, "bcCfpP:quz")) != -1) { 936797ac58cSKevin Wolf switch (c) { 937797ac58cSKevin Wolf case 'b': 938dc38852aSEric Blake bflag = true; 939797ac58cSKevin Wolf break; 940797ac58cSKevin Wolf case 'c': 941dc38852aSEric Blake cflag = true; 942797ac58cSKevin Wolf break; 943797ac58cSKevin Wolf case 'C': 944dc38852aSEric Blake Cflag = true; 945797ac58cSKevin Wolf break; 946770e0e0eSEric Blake case 'f': 947770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 948770e0e0eSEric Blake break; 949797ac58cSKevin Wolf case 'p': 950093ea232SEric Blake /* Ignored for backwards compatibility */ 951797ac58cSKevin Wolf break; 952797ac58cSKevin Wolf case 'P': 953dc38852aSEric Blake Pflag = true; 954797ac58cSKevin Wolf pattern = parse_pattern(optarg); 955797ac58cSKevin Wolf if (pattern < 0) { 956797ac58cSKevin Wolf return 0; 957797ac58cSKevin Wolf } 958797ac58cSKevin Wolf break; 959797ac58cSKevin Wolf case 'q': 960dc38852aSEric Blake qflag = true; 961797ac58cSKevin Wolf break; 962c2e001ccSEric Blake case 'u': 963c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 964c2e001ccSEric Blake break; 965797ac58cSKevin Wolf case 'z': 966dc38852aSEric Blake zflag = true; 967797ac58cSKevin Wolf break; 968797ac58cSKevin Wolf default: 969c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 970797ac58cSKevin Wolf } 971797ac58cSKevin Wolf } 972797ac58cSKevin Wolf 973797ac58cSKevin Wolf if (optind != argc - 2) { 974c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 975797ac58cSKevin Wolf } 976797ac58cSKevin Wolf 977093ea232SEric Blake if (bflag && zflag) { 978093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 979797ac58cSKevin Wolf return 0; 980797ac58cSKevin Wolf } 981797ac58cSKevin Wolf 982770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 983770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 984770e0e0eSEric Blake return 0; 985770e0e0eSEric Blake } 986770e0e0eSEric Blake 987c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 988c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 989c2e001ccSEric Blake return 0; 990c2e001ccSEric Blake } 991c2e001ccSEric Blake 992797ac58cSKevin Wolf if (zflag && Pflag) { 993797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 994797ac58cSKevin Wolf return 0; 995797ac58cSKevin Wolf } 996797ac58cSKevin Wolf 997797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 998797ac58cSKevin Wolf if (offset < 0) { 999a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1000797ac58cSKevin Wolf return 0; 1001797ac58cSKevin Wolf } 1002797ac58cSKevin Wolf 1003797ac58cSKevin Wolf optind++; 1004797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1005797ac58cSKevin Wolf if (count < 0) { 1006a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1007797ac58cSKevin Wolf return 0; 10089b0beaf3SJohn Snow } else if (count > SIZE_MAX) { 10099b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10109b0beaf3SJohn Snow (uint64_t) SIZE_MAX, argv[optind]); 10119b0beaf3SJohn Snow return 0; 1012797ac58cSKevin Wolf } 1013797ac58cSKevin Wolf 1014093ea232SEric Blake if (bflag || cflag) { 1015797ac58cSKevin Wolf if (offset & 0x1ff) { 1016797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1017797ac58cSKevin Wolf offset); 1018797ac58cSKevin Wolf return 0; 1019797ac58cSKevin Wolf } 1020797ac58cSKevin Wolf 1021797ac58cSKevin Wolf if (count & 0x1ff) { 10229b0beaf3SJohn Snow printf("count %"PRId64" is not sector aligned\n", 1023797ac58cSKevin Wolf count); 1024797ac58cSKevin Wolf return 0; 1025797ac58cSKevin Wolf } 1026797ac58cSKevin Wolf } 1027797ac58cSKevin Wolf 1028797ac58cSKevin Wolf if (!zflag) { 10294c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1030797ac58cSKevin Wolf } 1031797ac58cSKevin Wolf 1032797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10337b3f9712SEric Blake if (bflag) { 10344c7b7e9bSMax Reitz cnt = do_save_vmstate(blk, buf, offset, count, &total); 1035797ac58cSKevin Wolf } else if (zflag) { 1036770e0e0eSEric Blake cnt = do_co_write_zeroes(blk, offset, count, flags, &total); 1037797ac58cSKevin Wolf } else if (cflag) { 10384c7b7e9bSMax Reitz cnt = do_write_compressed(blk, buf, offset, count, &total); 1039797ac58cSKevin Wolf } else { 1040770e0e0eSEric Blake cnt = do_pwrite(blk, buf, offset, count, flags, &total); 1041797ac58cSKevin Wolf } 1042797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1043797ac58cSKevin Wolf 1044797ac58cSKevin Wolf if (cnt < 0) { 1045797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1046797ac58cSKevin Wolf goto out; 1047797ac58cSKevin Wolf } 1048797ac58cSKevin Wolf 1049797ac58cSKevin Wolf if (qflag) { 1050797ac58cSKevin Wolf goto out; 1051797ac58cSKevin Wolf } 1052797ac58cSKevin Wolf 1053797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1054797ac58cSKevin Wolf t2 = tsub(t2, t1); 1055797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1056797ac58cSKevin Wolf 1057797ac58cSKevin Wolf out: 1058797ac58cSKevin Wolf if (!zflag) { 1059797ac58cSKevin Wolf qemu_io_free(buf); 1060797ac58cSKevin Wolf } 1061797ac58cSKevin Wolf 1062797ac58cSKevin Wolf return 0; 1063797ac58cSKevin Wolf } 1064797ac58cSKevin Wolf 1065797ac58cSKevin Wolf static void 1066797ac58cSKevin Wolf writev_help(void) 1067797ac58cSKevin Wolf { 1068797ac58cSKevin Wolf printf( 1069797ac58cSKevin Wolf "\n" 1070797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1071797ac58cSKevin Wolf "\n" 1072797ac58cSKevin Wolf " Example:\n" 10736e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1074797ac58cSKevin Wolf "\n" 1075797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1076797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1077797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1078797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1079770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1080797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1081797ac58cSKevin Wolf "\n"); 1082797ac58cSKevin Wolf } 1083797ac58cSKevin Wolf 10844c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1085797ac58cSKevin Wolf 1086797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1087797ac58cSKevin Wolf .name = "writev", 1088797ac58cSKevin Wolf .cfunc = writev_f, 1089797ac58cSKevin Wolf .argmin = 2, 1090797ac58cSKevin Wolf .argmax = -1, 1091770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1092797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1093797ac58cSKevin Wolf .help = writev_help, 1094797ac58cSKevin Wolf }; 1095797ac58cSKevin Wolf 10964c7b7e9bSMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1097797ac58cSKevin Wolf { 1098797ac58cSKevin Wolf struct timeval t1, t2; 1099dc38852aSEric Blake bool Cflag = false, qflag = false; 1100770e0e0eSEric Blake int flags = 0; 1101797ac58cSKevin Wolf int c, cnt; 1102797ac58cSKevin Wolf char *buf; 1103797ac58cSKevin Wolf int64_t offset; 1104797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1105797ac58cSKevin Wolf int total = 0; 1106797ac58cSKevin Wolf int nr_iov; 1107797ac58cSKevin Wolf int pattern = 0xcd; 1108797ac58cSKevin Wolf QEMUIOVector qiov; 1109797ac58cSKevin Wolf 1110*4ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1111797ac58cSKevin Wolf switch (c) { 1112797ac58cSKevin Wolf case 'C': 1113dc38852aSEric Blake Cflag = true; 1114797ac58cSKevin Wolf break; 1115770e0e0eSEric Blake case 'f': 1116770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1117770e0e0eSEric Blake break; 1118797ac58cSKevin Wolf case 'q': 1119dc38852aSEric Blake qflag = true; 1120797ac58cSKevin Wolf break; 1121797ac58cSKevin Wolf case 'P': 1122797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1123797ac58cSKevin Wolf if (pattern < 0) { 1124797ac58cSKevin Wolf return 0; 1125797ac58cSKevin Wolf } 1126797ac58cSKevin Wolf break; 1127797ac58cSKevin Wolf default: 1128c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1129797ac58cSKevin Wolf } 1130797ac58cSKevin Wolf } 1131797ac58cSKevin Wolf 1132797ac58cSKevin Wolf if (optind > argc - 2) { 1133c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1134797ac58cSKevin Wolf } 1135797ac58cSKevin Wolf 1136797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1137797ac58cSKevin Wolf if (offset < 0) { 1138a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1139797ac58cSKevin Wolf return 0; 1140797ac58cSKevin Wolf } 1141797ac58cSKevin Wolf optind++; 1142797ac58cSKevin Wolf 1143797ac58cSKevin Wolf nr_iov = argc - optind; 11444c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1145797ac58cSKevin Wolf if (buf == NULL) { 1146797ac58cSKevin Wolf return 0; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf 1149797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1150770e0e0eSEric Blake cnt = do_aio_writev(blk, &qiov, offset, flags, &total); 1151797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1152797ac58cSKevin Wolf 1153797ac58cSKevin Wolf if (cnt < 0) { 1154797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1155797ac58cSKevin Wolf goto out; 1156797ac58cSKevin Wolf } 1157797ac58cSKevin Wolf 1158797ac58cSKevin Wolf if (qflag) { 1159797ac58cSKevin Wolf goto out; 1160797ac58cSKevin Wolf } 1161797ac58cSKevin Wolf 1162797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1163797ac58cSKevin Wolf t2 = tsub(t2, t1); 1164797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1165797ac58cSKevin Wolf out: 1166797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1167797ac58cSKevin Wolf qemu_io_free(buf); 1168797ac58cSKevin Wolf return 0; 1169797ac58cSKevin Wolf } 1170797ac58cSKevin Wolf 1171797ac58cSKevin Wolf struct aio_ctx { 11724c7b7e9bSMax Reitz BlockBackend *blk; 1173797ac58cSKevin Wolf QEMUIOVector qiov; 1174797ac58cSKevin Wolf int64_t offset; 1175797ac58cSKevin Wolf char *buf; 1176dc38852aSEric Blake bool qflag; 1177dc38852aSEric Blake bool vflag; 1178dc38852aSEric Blake bool Cflag; 1179dc38852aSEric Blake bool Pflag; 1180dc38852aSEric Blake bool zflag; 1181a91f9584SFam Zheng BlockAcctCookie acct; 1182797ac58cSKevin Wolf int pattern; 1183797ac58cSKevin Wolf struct timeval t1; 1184797ac58cSKevin Wolf }; 1185797ac58cSKevin Wolf 1186797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1187797ac58cSKevin Wolf { 1188797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1189797ac58cSKevin Wolf struct timeval t2; 1190797ac58cSKevin Wolf 1191797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1192797ac58cSKevin Wolf 1193797ac58cSKevin Wolf 1194797ac58cSKevin Wolf if (ret < 0) { 1195797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1196556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1197797ac58cSKevin Wolf goto out; 1198797ac58cSKevin Wolf } 1199797ac58cSKevin Wolf 12004c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1201a91f9584SFam Zheng 1202797ac58cSKevin Wolf if (ctx->qflag) { 1203797ac58cSKevin Wolf goto out; 1204797ac58cSKevin Wolf } 1205797ac58cSKevin Wolf 1206797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1207797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1208797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1209797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1210797ac58cSKevin Wolf out: 12115ceb7765SKevin Wolf if (!ctx->zflag) { 1212797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1213797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12145ceb7765SKevin Wolf } 1215797ac58cSKevin Wolf g_free(ctx); 1216797ac58cSKevin Wolf } 1217797ac58cSKevin Wolf 1218797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1219797ac58cSKevin Wolf { 1220797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1221797ac58cSKevin Wolf struct timeval t2; 1222797ac58cSKevin Wolf 1223797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1224797ac58cSKevin Wolf 1225797ac58cSKevin Wolf if (ret < 0) { 1226797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1227556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1228797ac58cSKevin Wolf goto out; 1229797ac58cSKevin Wolf } 1230797ac58cSKevin Wolf 1231797ac58cSKevin Wolf if (ctx->Pflag) { 1232797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1233797ac58cSKevin Wolf 1234797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1235797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1236797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1237797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1238797ac58cSKevin Wolf } 1239797ac58cSKevin Wolf g_free(cmp_buf); 1240797ac58cSKevin Wolf } 1241797ac58cSKevin Wolf 12424c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1243a91f9584SFam Zheng 1244797ac58cSKevin Wolf if (ctx->qflag) { 1245797ac58cSKevin Wolf goto out; 1246797ac58cSKevin Wolf } 1247797ac58cSKevin Wolf 1248797ac58cSKevin Wolf if (ctx->vflag) { 1249797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1250797ac58cSKevin Wolf } 1251797ac58cSKevin Wolf 1252797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1253797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1254797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1255797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1256797ac58cSKevin Wolf out: 1257797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1258797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1259797ac58cSKevin Wolf g_free(ctx); 1260797ac58cSKevin Wolf } 1261797ac58cSKevin Wolf 1262797ac58cSKevin Wolf static void aio_read_help(void) 1263797ac58cSKevin Wolf { 1264797ac58cSKevin Wolf printf( 1265797ac58cSKevin Wolf "\n" 1266797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1267797ac58cSKevin Wolf "\n" 1268797ac58cSKevin Wolf " Example:\n" 1269797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1270797ac58cSKevin Wolf "\n" 1271797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1272797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1273797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1274797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1275797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1276797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 1277797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1278797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1279797ac58cSKevin Wolf "\n"); 1280797ac58cSKevin Wolf } 1281797ac58cSKevin Wolf 12824c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1283797ac58cSKevin Wolf 1284797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1285797ac58cSKevin Wolf .name = "aio_read", 1286797ac58cSKevin Wolf .cfunc = aio_read_f, 1287797ac58cSKevin Wolf .argmin = 2, 1288797ac58cSKevin Wolf .argmax = -1, 1289797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 1290797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1291797ac58cSKevin Wolf .help = aio_read_help, 1292797ac58cSKevin Wolf }; 1293797ac58cSKevin Wolf 12944c7b7e9bSMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1295797ac58cSKevin Wolf { 1296797ac58cSKevin Wolf int nr_iov, c; 1297797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1298797ac58cSKevin Wolf 12994c7b7e9bSMax Reitz ctx->blk = blk; 1300b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 1301797ac58cSKevin Wolf switch (c) { 1302797ac58cSKevin Wolf case 'C': 1303dc38852aSEric Blake ctx->Cflag = true; 1304797ac58cSKevin Wolf break; 1305797ac58cSKevin Wolf case 'P': 1306dc38852aSEric Blake ctx->Pflag = true; 1307797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1308797ac58cSKevin Wolf if (ctx->pattern < 0) { 1309797ac58cSKevin Wolf g_free(ctx); 1310797ac58cSKevin Wolf return 0; 1311797ac58cSKevin Wolf } 1312797ac58cSKevin Wolf break; 1313797ac58cSKevin Wolf case 'q': 1314dc38852aSEric Blake ctx->qflag = true; 1315797ac58cSKevin Wolf break; 1316797ac58cSKevin Wolf case 'v': 1317dc38852aSEric Blake ctx->vflag = true; 1318797ac58cSKevin Wolf break; 1319797ac58cSKevin Wolf default: 1320797ac58cSKevin Wolf g_free(ctx); 1321c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1322797ac58cSKevin Wolf } 1323797ac58cSKevin Wolf } 1324797ac58cSKevin Wolf 1325797ac58cSKevin Wolf if (optind > argc - 2) { 1326797ac58cSKevin Wolf g_free(ctx); 1327c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1328797ac58cSKevin Wolf } 1329797ac58cSKevin Wolf 1330797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1331797ac58cSKevin Wolf if (ctx->offset < 0) { 1332a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1333797ac58cSKevin Wolf g_free(ctx); 1334797ac58cSKevin Wolf return 0; 1335797ac58cSKevin Wolf } 1336797ac58cSKevin Wolf optind++; 1337797ac58cSKevin Wolf 1338797ac58cSKevin Wolf nr_iov = argc - optind; 13394c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1340797ac58cSKevin Wolf if (ctx->buf == NULL) { 1341556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1342797ac58cSKevin Wolf g_free(ctx); 1343797ac58cSKevin Wolf return 0; 1344797ac58cSKevin Wolf } 1345797ac58cSKevin Wolf 1346797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 13474c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 13484c7b7e9bSMax Reitz BLOCK_ACCT_READ); 13497b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1350797ac58cSKevin Wolf return 0; 1351797ac58cSKevin Wolf } 1352797ac58cSKevin Wolf 1353797ac58cSKevin Wolf static void aio_write_help(void) 1354797ac58cSKevin Wolf { 1355797ac58cSKevin Wolf printf( 1356797ac58cSKevin Wolf "\n" 1357797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1358797ac58cSKevin Wolf " from multiple buffers\n" 1359797ac58cSKevin Wolf "\n" 1360797ac58cSKevin Wolf " Example:\n" 1361797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1362797ac58cSKevin Wolf "\n" 1363797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1364797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1365797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1366797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1367797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1368797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1369770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1370797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1371c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 13725ceb7765SKevin Wolf " -z, -- write zeroes using blk_aio_write_zeroes\n" 1373797ac58cSKevin Wolf "\n"); 1374797ac58cSKevin Wolf } 1375797ac58cSKevin Wolf 13764c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1377797ac58cSKevin Wolf 1378797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1379797ac58cSKevin Wolf .name = "aio_write", 1380797ac58cSKevin Wolf .cfunc = aio_write_f, 1381797ac58cSKevin Wolf .argmin = 2, 1382797ac58cSKevin Wolf .argmax = -1, 1383c2e001ccSEric Blake .args = "[-Cfquz] [-P pattern] off len [len..]", 1384797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1385797ac58cSKevin Wolf .help = aio_write_help, 1386797ac58cSKevin Wolf }; 1387797ac58cSKevin Wolf 13884c7b7e9bSMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1389797ac58cSKevin Wolf { 1390797ac58cSKevin Wolf int nr_iov, c; 1391797ac58cSKevin Wolf int pattern = 0xcd; 1392797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1393770e0e0eSEric Blake int flags = 0; 1394797ac58cSKevin Wolf 13954c7b7e9bSMax Reitz ctx->blk = blk; 1396*4ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:uz")) != -1) { 1397797ac58cSKevin Wolf switch (c) { 1398797ac58cSKevin Wolf case 'C': 1399dc38852aSEric Blake ctx->Cflag = true; 1400797ac58cSKevin Wolf break; 1401770e0e0eSEric Blake case 'f': 1402770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1403770e0e0eSEric Blake break; 1404797ac58cSKevin Wolf case 'q': 1405dc38852aSEric Blake ctx->qflag = true; 1406797ac58cSKevin Wolf break; 1407c2e001ccSEric Blake case 'u': 1408c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1409c2e001ccSEric Blake break; 1410797ac58cSKevin Wolf case 'P': 1411797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1412797ac58cSKevin Wolf if (pattern < 0) { 1413797ac58cSKevin Wolf g_free(ctx); 1414797ac58cSKevin Wolf return 0; 1415797ac58cSKevin Wolf } 1416797ac58cSKevin Wolf break; 14175ceb7765SKevin Wolf case 'z': 1418dc38852aSEric Blake ctx->zflag = true; 14195ceb7765SKevin Wolf break; 1420797ac58cSKevin Wolf default: 1421797ac58cSKevin Wolf g_free(ctx); 1422c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1423797ac58cSKevin Wolf } 1424797ac58cSKevin Wolf } 1425797ac58cSKevin Wolf 1426797ac58cSKevin Wolf if (optind > argc - 2) { 1427797ac58cSKevin Wolf g_free(ctx); 1428c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1429797ac58cSKevin Wolf } 1430797ac58cSKevin Wolf 14315ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 14325ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 14335ceb7765SKevin Wolf g_free(ctx); 14345ceb7765SKevin Wolf return 0; 14355ceb7765SKevin Wolf } 14365ceb7765SKevin Wolf 1437c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1438c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1439*4ca1d340SEric Blake g_free(ctx); 1440c2e001ccSEric Blake return 0; 1441c2e001ccSEric Blake } 1442c2e001ccSEric Blake 14435ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 14445ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 14455ceb7765SKevin Wolf g_free(ctx); 14465ceb7765SKevin Wolf return 0; 14475ceb7765SKevin Wolf } 14485ceb7765SKevin Wolf 1449797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1450797ac58cSKevin Wolf if (ctx->offset < 0) { 1451a9ecfa00SJohn Snow print_cvtnum_err(ctx->offset, argv[optind]); 1452797ac58cSKevin Wolf g_free(ctx); 1453797ac58cSKevin Wolf return 0; 1454797ac58cSKevin Wolf } 1455797ac58cSKevin Wolf optind++; 1456797ac58cSKevin Wolf 14575ceb7765SKevin Wolf if (ctx->zflag) { 14585ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 14595ceb7765SKevin Wolf if (count < 0) { 14605ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 14610e01b76eSKevin Wolf g_free(ctx); 14625ceb7765SKevin Wolf return 0; 14635ceb7765SKevin Wolf } 14645ceb7765SKevin Wolf 14655ceb7765SKevin Wolf ctx->qiov.size = count; 1466770e0e0eSEric Blake blk_aio_write_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1467770e0e0eSEric Blake ctx); 14685ceb7765SKevin Wolf } else { 1469797ac58cSKevin Wolf nr_iov = argc - optind; 14705ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 14715ceb7765SKevin Wolf pattern); 1472797ac58cSKevin Wolf if (ctx->buf == NULL) { 1473556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1474797ac58cSKevin Wolf g_free(ctx); 1475797ac58cSKevin Wolf return 0; 1476797ac58cSKevin Wolf } 1477797ac58cSKevin Wolf 1478797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 14794c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14804c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 14815ceb7765SKevin Wolf 1482770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1483770e0e0eSEric Blake ctx); 14845ceb7765SKevin Wolf } 1485797ac58cSKevin Wolf return 0; 1486797ac58cSKevin Wolf } 1487797ac58cSKevin Wolf 14884c7b7e9bSMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1489797ac58cSKevin Wolf { 1490556c2b60SAlberto Garcia BlockAcctCookie cookie; 1491556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 14924c7b7e9bSMax Reitz blk_drain_all(); 1493556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1494797ac58cSKevin Wolf return 0; 1495797ac58cSKevin Wolf } 1496797ac58cSKevin Wolf 1497797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1498797ac58cSKevin Wolf .name = "aio_flush", 1499797ac58cSKevin Wolf .cfunc = aio_flush_f, 1500797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1501797ac58cSKevin Wolf }; 1502797ac58cSKevin Wolf 15034c7b7e9bSMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1504797ac58cSKevin Wolf { 15054c7b7e9bSMax Reitz blk_flush(blk); 1506797ac58cSKevin Wolf return 0; 1507797ac58cSKevin Wolf } 1508797ac58cSKevin Wolf 1509797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1510797ac58cSKevin Wolf .name = "flush", 1511797ac58cSKevin Wolf .altname = "f", 1512797ac58cSKevin Wolf .cfunc = flush_f, 1513797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1514797ac58cSKevin Wolf }; 1515797ac58cSKevin Wolf 15164c7b7e9bSMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1517797ac58cSKevin Wolf { 1518797ac58cSKevin Wolf int64_t offset; 1519797ac58cSKevin Wolf int ret; 1520797ac58cSKevin Wolf 1521797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1522797ac58cSKevin Wolf if (offset < 0) { 1523a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1524797ac58cSKevin Wolf return 0; 1525797ac58cSKevin Wolf } 1526797ac58cSKevin Wolf 15274c7b7e9bSMax Reitz ret = blk_truncate(blk, offset); 1528797ac58cSKevin Wolf if (ret < 0) { 1529797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1530797ac58cSKevin Wolf return 0; 1531797ac58cSKevin Wolf } 1532797ac58cSKevin Wolf 1533797ac58cSKevin Wolf return 0; 1534797ac58cSKevin Wolf } 1535797ac58cSKevin Wolf 1536797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1537797ac58cSKevin Wolf .name = "truncate", 1538797ac58cSKevin Wolf .altname = "t", 1539797ac58cSKevin Wolf .cfunc = truncate_f, 1540797ac58cSKevin Wolf .argmin = 1, 1541797ac58cSKevin Wolf .argmax = 1, 1542797ac58cSKevin Wolf .args = "off", 1543797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1544797ac58cSKevin Wolf }; 1545797ac58cSKevin Wolf 15464c7b7e9bSMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1547797ac58cSKevin Wolf { 1548797ac58cSKevin Wolf int64_t size; 1549797ac58cSKevin Wolf char s1[64]; 1550797ac58cSKevin Wolf 15514c7b7e9bSMax Reitz size = blk_getlength(blk); 1552797ac58cSKevin Wolf if (size < 0) { 1553797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1554797ac58cSKevin Wolf return 0; 1555797ac58cSKevin Wolf } 1556797ac58cSKevin Wolf 1557797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1558797ac58cSKevin Wolf printf("%s\n", s1); 1559797ac58cSKevin Wolf return 0; 1560797ac58cSKevin Wolf } 1561797ac58cSKevin Wolf 1562797ac58cSKevin Wolf 1563797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1564797ac58cSKevin Wolf .name = "length", 1565797ac58cSKevin Wolf .altname = "l", 1566797ac58cSKevin Wolf .cfunc = length_f, 1567797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1568797ac58cSKevin Wolf }; 1569797ac58cSKevin Wolf 1570797ac58cSKevin Wolf 15714c7b7e9bSMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1572797ac58cSKevin Wolf { 15734c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1574797ac58cSKevin Wolf BlockDriverInfo bdi; 1575a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 1576797ac58cSKevin Wolf char s1[64], s2[64]; 1577797ac58cSKevin Wolf int ret; 1578797ac58cSKevin Wolf 1579797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1580797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1581797ac58cSKevin Wolf } 1582797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1583797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1584797ac58cSKevin Wolf } 1585797ac58cSKevin Wolf 1586797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1587797ac58cSKevin Wolf if (ret) { 1588797ac58cSKevin Wolf return 0; 1589797ac58cSKevin Wolf } 1590797ac58cSKevin Wolf 1591797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1592797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1593797ac58cSKevin Wolf 1594797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1595797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1596797ac58cSKevin Wolf 1597a8d8ecb7SMax Reitz spec_info = bdrv_get_specific_info(bs); 1598a8d8ecb7SMax Reitz if (spec_info) { 1599a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1600a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1601a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1602a8d8ecb7SMax Reitz } 1603a8d8ecb7SMax Reitz 1604797ac58cSKevin Wolf return 0; 1605797ac58cSKevin Wolf } 1606797ac58cSKevin Wolf 1607797ac58cSKevin Wolf 1608797ac58cSKevin Wolf 1609797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1610797ac58cSKevin Wolf .name = "info", 1611797ac58cSKevin Wolf .altname = "i", 1612797ac58cSKevin Wolf .cfunc = info_f, 1613797ac58cSKevin Wolf .oneline = "prints information about the current file", 1614797ac58cSKevin Wolf }; 1615797ac58cSKevin Wolf 1616797ac58cSKevin Wolf static void discard_help(void) 1617797ac58cSKevin Wolf { 1618797ac58cSKevin Wolf printf( 1619797ac58cSKevin Wolf "\n" 1620797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1621797ac58cSKevin Wolf "\n" 1622797ac58cSKevin Wolf " Example:\n" 1623797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1624797ac58cSKevin Wolf "\n" 1625797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1626797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1627797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1628797ac58cSKevin Wolf "\n"); 1629797ac58cSKevin Wolf } 1630797ac58cSKevin Wolf 16314c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1632797ac58cSKevin Wolf 1633797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1634797ac58cSKevin Wolf .name = "discard", 1635797ac58cSKevin Wolf .altname = "d", 1636797ac58cSKevin Wolf .cfunc = discard_f, 1637797ac58cSKevin Wolf .argmin = 2, 1638797ac58cSKevin Wolf .argmax = -1, 1639797ac58cSKevin Wolf .args = "[-Cq] off len", 1640797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1641797ac58cSKevin Wolf .help = discard_help, 1642797ac58cSKevin Wolf }; 1643797ac58cSKevin Wolf 16444c7b7e9bSMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1645797ac58cSKevin Wolf { 1646797ac58cSKevin Wolf struct timeval t1, t2; 1647dc38852aSEric Blake bool Cflag = false, qflag = false; 1648797ac58cSKevin Wolf int c, ret; 16499b0beaf3SJohn Snow int64_t offset, count; 1650797ac58cSKevin Wolf 1651b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1652797ac58cSKevin Wolf switch (c) { 1653797ac58cSKevin Wolf case 'C': 1654dc38852aSEric Blake Cflag = true; 1655797ac58cSKevin Wolf break; 1656797ac58cSKevin Wolf case 'q': 1657dc38852aSEric Blake qflag = true; 1658797ac58cSKevin Wolf break; 1659797ac58cSKevin Wolf default: 1660c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1661797ac58cSKevin Wolf } 1662797ac58cSKevin Wolf } 1663797ac58cSKevin Wolf 1664797ac58cSKevin Wolf if (optind != argc - 2) { 1665c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1666797ac58cSKevin Wolf } 1667797ac58cSKevin Wolf 1668797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1669797ac58cSKevin Wolf if (offset < 0) { 1670a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1671797ac58cSKevin Wolf return 0; 1672797ac58cSKevin Wolf } 1673797ac58cSKevin Wolf 1674797ac58cSKevin Wolf optind++; 1675797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1676797ac58cSKevin Wolf if (count < 0) { 1677a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1678797ac58cSKevin Wolf return 0; 16799b0beaf3SJohn Snow } else if (count >> BDRV_SECTOR_BITS > INT_MAX) { 16809b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 16819b0beaf3SJohn Snow (uint64_t)INT_MAX << BDRV_SECTOR_BITS, 16829b0beaf3SJohn Snow argv[optind]); 16839b0beaf3SJohn Snow return 0; 1684797ac58cSKevin Wolf } 1685797ac58cSKevin Wolf 1686797ac58cSKevin Wolf gettimeofday(&t1, NULL); 16874c7b7e9bSMax Reitz ret = blk_discard(blk, offset >> BDRV_SECTOR_BITS, 1688797ac58cSKevin Wolf count >> BDRV_SECTOR_BITS); 1689797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1690797ac58cSKevin Wolf 1691797ac58cSKevin Wolf if (ret < 0) { 1692797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1693797ac58cSKevin Wolf goto out; 1694797ac58cSKevin Wolf } 1695797ac58cSKevin Wolf 1696797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1697797ac58cSKevin Wolf if (!qflag) { 1698797ac58cSKevin Wolf t2 = tsub(t2, t1); 1699797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1700797ac58cSKevin Wolf } 1701797ac58cSKevin Wolf 1702797ac58cSKevin Wolf out: 1703797ac58cSKevin Wolf return 0; 1704797ac58cSKevin Wolf } 1705797ac58cSKevin Wolf 17064c7b7e9bSMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1707797ac58cSKevin Wolf { 17084c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 17099b0beaf3SJohn Snow int64_t offset, sector_num, nb_sectors, remaining; 1710797ac58cSKevin Wolf char s1[64]; 17119b0beaf3SJohn Snow int num, ret; 17129b0beaf3SJohn Snow int64_t sum_alloc; 1713797ac58cSKevin Wolf 1714797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1715797ac58cSKevin Wolf if (offset < 0) { 1716a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1717797ac58cSKevin Wolf return 0; 1718797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1719797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1720797ac58cSKevin Wolf offset); 1721797ac58cSKevin Wolf return 0; 1722797ac58cSKevin Wolf } 1723797ac58cSKevin Wolf 1724797ac58cSKevin Wolf if (argc == 3) { 1725797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1726797ac58cSKevin Wolf if (nb_sectors < 0) { 1727a9ecfa00SJohn Snow print_cvtnum_err(nb_sectors, argv[2]); 1728797ac58cSKevin Wolf return 0; 17299b0beaf3SJohn Snow } else if (nb_sectors > INT_MAX) { 17309b0beaf3SJohn Snow printf("length argument cannot exceed %d, given %s\n", 17319b0beaf3SJohn Snow INT_MAX, argv[2]); 17329b0beaf3SJohn Snow return 0; 1733797ac58cSKevin Wolf } 1734797ac58cSKevin Wolf } else { 1735797ac58cSKevin Wolf nb_sectors = 1; 1736797ac58cSKevin Wolf } 1737797ac58cSKevin Wolf 1738797ac58cSKevin Wolf remaining = nb_sectors; 1739797ac58cSKevin Wolf sum_alloc = 0; 1740797ac58cSKevin Wolf sector_num = offset >> 9; 1741797ac58cSKevin Wolf while (remaining) { 1742797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1743d663640cSPaolo Bonzini if (ret < 0) { 1744d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1745d663640cSPaolo Bonzini return 0; 1746d663640cSPaolo Bonzini } 1747797ac58cSKevin Wolf sector_num += num; 1748797ac58cSKevin Wolf remaining -= num; 1749797ac58cSKevin Wolf if (ret) { 1750797ac58cSKevin Wolf sum_alloc += num; 1751797ac58cSKevin Wolf } 1752797ac58cSKevin Wolf if (num == 0) { 1753797ac58cSKevin Wolf nb_sectors -= remaining; 1754797ac58cSKevin Wolf remaining = 0; 1755797ac58cSKevin Wolf } 1756797ac58cSKevin Wolf } 1757797ac58cSKevin Wolf 1758797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1759797ac58cSKevin Wolf 17609b0beaf3SJohn Snow printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n", 1761797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1762797ac58cSKevin Wolf return 0; 1763797ac58cSKevin Wolf } 1764797ac58cSKevin Wolf 1765797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1766797ac58cSKevin Wolf .name = "alloc", 1767797ac58cSKevin Wolf .altname = "a", 1768797ac58cSKevin Wolf .argmin = 1, 1769797ac58cSKevin Wolf .argmax = 2, 1770797ac58cSKevin Wolf .cfunc = alloc_f, 1771797ac58cSKevin Wolf .args = "off [sectors]", 1772797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1773797ac58cSKevin Wolf }; 1774797ac58cSKevin Wolf 1775797ac58cSKevin Wolf 1776797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1777797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1778797ac58cSKevin Wolf { 1779797ac58cSKevin Wolf int num, num_checked; 1780797ac58cSKevin Wolf int ret, firstret; 1781797ac58cSKevin Wolf 1782797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1783797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1784797ac58cSKevin Wolf if (ret < 0) { 1785797ac58cSKevin Wolf return ret; 1786797ac58cSKevin Wolf } 1787797ac58cSKevin Wolf 1788797ac58cSKevin Wolf firstret = ret; 1789797ac58cSKevin Wolf *pnum = num; 1790797ac58cSKevin Wolf 1791797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1792797ac58cSKevin Wolf sector_num += num; 1793797ac58cSKevin Wolf nb_sectors -= num; 1794797ac58cSKevin Wolf 1795797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1796797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 17974b25bbc4SMax Reitz if (ret == firstret && num) { 1798797ac58cSKevin Wolf *pnum += num; 1799797ac58cSKevin Wolf } else { 1800797ac58cSKevin Wolf break; 1801797ac58cSKevin Wolf } 1802797ac58cSKevin Wolf } 1803797ac58cSKevin Wolf 1804797ac58cSKevin Wolf return firstret; 1805797ac58cSKevin Wolf } 1806797ac58cSKevin Wolf 18074c7b7e9bSMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1808797ac58cSKevin Wolf { 1809797ac58cSKevin Wolf int64_t offset; 18104c7b7e9bSMax Reitz int64_t nb_sectors, total_sectors; 1811797ac58cSKevin Wolf char s1[64]; 1812797ac58cSKevin Wolf int64_t num; 1813797ac58cSKevin Wolf int ret; 1814797ac58cSKevin Wolf const char *retstr; 1815797ac58cSKevin Wolf 1816797ac58cSKevin Wolf offset = 0; 18174c7b7e9bSMax Reitz total_sectors = blk_nb_sectors(blk); 18184c7b7e9bSMax Reitz if (total_sectors < 0) { 18194c7b7e9bSMax Reitz error_report("Failed to query image length: %s", 18204c7b7e9bSMax Reitz strerror(-total_sectors)); 18214c7b7e9bSMax Reitz return 0; 18224c7b7e9bSMax Reitz } 18234c7b7e9bSMax Reitz 18244c7b7e9bSMax Reitz nb_sectors = total_sectors; 1825797ac58cSKevin Wolf 1826797ac58cSKevin Wolf do { 18274c7b7e9bSMax Reitz ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num); 1828797ac58cSKevin Wolf if (ret < 0) { 1829797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1830797ac58cSKevin Wolf return 0; 18314b25bbc4SMax Reitz } else if (!num) { 18324b25bbc4SMax Reitz error_report("Unexpected end of image"); 18334b25bbc4SMax Reitz return 0; 1834797ac58cSKevin Wolf } 1835797ac58cSKevin Wolf 1836797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1837797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 1838797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 1839797ac58cSKevin Wolf "at offset %s (%d)\n", 1840797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 1841797ac58cSKevin Wolf 1842797ac58cSKevin Wolf offset += num; 1843797ac58cSKevin Wolf nb_sectors -= num; 18444c7b7e9bSMax Reitz } while (offset < total_sectors); 1845797ac58cSKevin Wolf 1846797ac58cSKevin Wolf return 0; 1847797ac58cSKevin Wolf } 1848797ac58cSKevin Wolf 1849797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1850797ac58cSKevin Wolf .name = "map", 1851797ac58cSKevin Wolf .argmin = 0, 1852797ac58cSKevin Wolf .argmax = 0, 1853797ac58cSKevin Wolf .cfunc = map_f, 1854797ac58cSKevin Wolf .args = "", 1855797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1856797ac58cSKevin Wolf }; 1857797ac58cSKevin Wolf 18585bbd2e59SKevin Wolf static void reopen_help(void) 18595bbd2e59SKevin Wolf { 18605bbd2e59SKevin Wolf printf( 18615bbd2e59SKevin Wolf "\n" 18625bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 18635bbd2e59SKevin Wolf "\n" 18645bbd2e59SKevin Wolf " Example:\n" 18655bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 18665bbd2e59SKevin Wolf "\n" 18675bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 18685bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 18695bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 18705bbd2e59SKevin Wolf "\n"); 18715bbd2e59SKevin Wolf } 18725bbd2e59SKevin Wolf 18735bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv); 18745bbd2e59SKevin Wolf 18755bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 18765bbd2e59SKevin Wolf .name = "reopen", 18775bbd2e59SKevin Wolf .merge_lists = true, 18785bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 18795bbd2e59SKevin Wolf .desc = { 18805bbd2e59SKevin Wolf /* no elements => accept any params */ 18815bbd2e59SKevin Wolf { /* end of list */ } 18825bbd2e59SKevin Wolf }, 18835bbd2e59SKevin Wolf }; 18845bbd2e59SKevin Wolf 18855bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 18865bbd2e59SKevin Wolf .name = "reopen", 18875bbd2e59SKevin Wolf .argmin = 0, 18885bbd2e59SKevin Wolf .argmax = -1, 18895bbd2e59SKevin Wolf .cfunc = reopen_f, 18905bbd2e59SKevin Wolf .args = "[-r] [-c cache] [-o options]", 18915bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 18925bbd2e59SKevin Wolf .help = reopen_help, 18935bbd2e59SKevin Wolf }; 18945bbd2e59SKevin Wolf 18955bbd2e59SKevin Wolf static int reopen_f(BlockBackend *blk, int argc, char **argv) 18965bbd2e59SKevin Wolf { 18975bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 18985bbd2e59SKevin Wolf QemuOpts *qopts; 18995bbd2e59SKevin Wolf QDict *opts; 19005bbd2e59SKevin Wolf int c; 19015bbd2e59SKevin Wolf int flags = bs->open_flags; 190219dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 19035bbd2e59SKevin Wolf 19045bbd2e59SKevin Wolf BlockReopenQueue *brq; 19055bbd2e59SKevin Wolf Error *local_err = NULL; 19065bbd2e59SKevin Wolf 19075bbd2e59SKevin Wolf while ((c = getopt(argc, argv, "c:o:r")) != -1) { 19085bbd2e59SKevin Wolf switch (c) { 19095bbd2e59SKevin Wolf case 'c': 191019dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 19115bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 19125bbd2e59SKevin Wolf return 0; 19135bbd2e59SKevin Wolf } 19145bbd2e59SKevin Wolf break; 19155bbd2e59SKevin Wolf case 'o': 19165bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 19175bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19185bbd2e59SKevin Wolf return 0; 19195bbd2e59SKevin Wolf } 19205bbd2e59SKevin Wolf break; 19215bbd2e59SKevin Wolf case 'r': 19225bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 19235bbd2e59SKevin Wolf break; 19245bbd2e59SKevin Wolf default: 19255bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19265bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19275bbd2e59SKevin Wolf } 19285bbd2e59SKevin Wolf } 19295bbd2e59SKevin Wolf 19305bbd2e59SKevin Wolf if (optind != argc) { 19315bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19325bbd2e59SKevin Wolf return qemuio_command_usage(&reopen_cmd); 19335bbd2e59SKevin Wolf } 19345bbd2e59SKevin Wolf 193519dbecdcSKevin Wolf if (writethrough != blk_enable_write_cache(blk) && 193619dbecdcSKevin Wolf blk_get_attached_dev(blk)) 193719dbecdcSKevin Wolf { 193819dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 193919dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 194019dbecdcSKevin Wolf return 0; 194119dbecdcSKevin Wolf } 194219dbecdcSKevin Wolf 19435bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 19445bbd2e59SKevin Wolf opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; 19455bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 19465bbd2e59SKevin Wolf 19475bbd2e59SKevin Wolf brq = bdrv_reopen_queue(NULL, bs, opts, flags); 19485bbd2e59SKevin Wolf bdrv_reopen_multiple(brq, &local_err); 19495bbd2e59SKevin Wolf if (local_err) { 19505bbd2e59SKevin Wolf error_report_err(local_err); 195119dbecdcSKevin Wolf } else { 195219dbecdcSKevin Wolf blk_set_enable_write_cache(blk, !writethrough); 19535bbd2e59SKevin Wolf } 19545bbd2e59SKevin Wolf 19555bbd2e59SKevin Wolf return 0; 19565bbd2e59SKevin Wolf } 19575bbd2e59SKevin Wolf 19584c7b7e9bSMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 1959797ac58cSKevin Wolf { 1960797ac58cSKevin Wolf int ret; 1961797ac58cSKevin Wolf 19624c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 1963797ac58cSKevin Wolf if (ret < 0) { 1964797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 1965797ac58cSKevin Wolf } 1966797ac58cSKevin Wolf 1967797ac58cSKevin Wolf return 0; 1968797ac58cSKevin Wolf } 1969797ac58cSKevin Wolf 19704c7b7e9bSMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 19714cc70e93SFam Zheng { 19724cc70e93SFam Zheng int ret; 19734cc70e93SFam Zheng 19744c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 19754cc70e93SFam Zheng if (ret < 0) { 19764cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 19774cc70e93SFam Zheng } 19784cc70e93SFam Zheng 19794cc70e93SFam Zheng return 0; 19804cc70e93SFam Zheng } 19814cc70e93SFam Zheng 1982797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 1983797ac58cSKevin Wolf .name = "break", 1984797ac58cSKevin Wolf .argmin = 2, 1985797ac58cSKevin Wolf .argmax = 2, 1986797ac58cSKevin Wolf .cfunc = break_f, 1987797ac58cSKevin Wolf .args = "event tag", 1988797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 1989797ac58cSKevin Wolf "request as tag", 1990797ac58cSKevin Wolf }; 1991797ac58cSKevin Wolf 19924cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 19934cc70e93SFam Zheng .name = "remove_break", 19944cc70e93SFam Zheng .argmin = 1, 19954cc70e93SFam Zheng .argmax = 1, 19964cc70e93SFam Zheng .cfunc = remove_break_f, 19974cc70e93SFam Zheng .args = "tag", 19984cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 19994cc70e93SFam Zheng }; 20004cc70e93SFam Zheng 20014c7b7e9bSMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2002797ac58cSKevin Wolf { 2003797ac58cSKevin Wolf int ret; 2004797ac58cSKevin Wolf 20054c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2006797ac58cSKevin Wolf if (ret < 0) { 2007797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2008797ac58cSKevin Wolf } 2009797ac58cSKevin Wolf 2010797ac58cSKevin Wolf return 0; 2011797ac58cSKevin Wolf } 2012797ac58cSKevin Wolf 2013797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2014797ac58cSKevin Wolf .name = "resume", 2015797ac58cSKevin Wolf .argmin = 1, 2016797ac58cSKevin Wolf .argmax = 1, 2017797ac58cSKevin Wolf .cfunc = resume_f, 2018797ac58cSKevin Wolf .args = "tag", 2019797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2020797ac58cSKevin Wolf }; 2021797ac58cSKevin Wolf 20224c7b7e9bSMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2023797ac58cSKevin Wolf { 20244c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 20254c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2026797ac58cSKevin Wolf } 2027797ac58cSKevin Wolf 2028797ac58cSKevin Wolf return 0; 2029797ac58cSKevin Wolf } 2030797ac58cSKevin Wolf 2031797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2032797ac58cSKevin Wolf .name = "wait_break", 2033797ac58cSKevin Wolf .argmin = 1, 2034797ac58cSKevin Wolf .argmax = 1, 2035797ac58cSKevin Wolf .cfunc = wait_break_f, 2036797ac58cSKevin Wolf .args = "tag", 2037797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2038797ac58cSKevin Wolf }; 2039797ac58cSKevin Wolf 20404c7b7e9bSMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2041797ac58cSKevin Wolf { 2042797ac58cSKevin Wolf abort(); 2043797ac58cSKevin Wolf } 2044797ac58cSKevin Wolf 2045797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2046797ac58cSKevin Wolf .name = "abort", 2047797ac58cSKevin Wolf .cfunc = abort_f, 2048797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2049797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2050797ac58cSKevin Wolf }; 2051797ac58cSKevin Wolf 20520e82dc7bSMax Reitz static void sigraise_help(void) 20530e82dc7bSMax Reitz { 20540e82dc7bSMax Reitz printf( 20550e82dc7bSMax Reitz "\n" 20560e82dc7bSMax Reitz " raises the given signal\n" 20570e82dc7bSMax Reitz "\n" 20580e82dc7bSMax Reitz " Example:\n" 20590e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 20600e82dc7bSMax Reitz "\n" 20610e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 20620e82dc7bSMax Reitz " given to sigraise.\n" 20630e82dc7bSMax Reitz "\n", SIGTERM); 20640e82dc7bSMax Reitz } 20650e82dc7bSMax Reitz 20664c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 20670e82dc7bSMax Reitz 20680e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 20690e82dc7bSMax Reitz .name = "sigraise", 20700e82dc7bSMax Reitz .cfunc = sigraise_f, 20710e82dc7bSMax Reitz .argmin = 1, 20720e82dc7bSMax Reitz .argmax = 1, 20730e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 20740e82dc7bSMax Reitz .args = "signal", 20750e82dc7bSMax Reitz .oneline = "raises a signal", 20760e82dc7bSMax Reitz .help = sigraise_help, 20770e82dc7bSMax Reitz }; 20780e82dc7bSMax Reitz 20794c7b7e9bSMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 20800e82dc7bSMax Reitz { 20819b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 20820e82dc7bSMax Reitz if (sig < 0) { 2083a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 20840e82dc7bSMax Reitz return 0; 20859b0beaf3SJohn Snow } else if (sig > NSIG) { 20869b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 20879b0beaf3SJohn Snow argv[1]); 20889b0beaf3SJohn Snow return 0; 20890e82dc7bSMax Reitz } 20900e82dc7bSMax Reitz 20910e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 20920e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 20930e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 20940e82dc7bSMax Reitz fflush(stdout); 20950e82dc7bSMax Reitz fflush(stderr); 20960e82dc7bSMax Reitz 20970e82dc7bSMax Reitz raise(sig); 20980e82dc7bSMax Reitz return 0; 20990e82dc7bSMax Reitz } 21000e82dc7bSMax Reitz 2101cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2102cd33d02aSKevin Wolf { 2103cd33d02aSKevin Wolf bool *expired = opaque; 2104cd33d02aSKevin Wolf *expired = true; 2105cd33d02aSKevin Wolf } 2106cd33d02aSKevin Wolf 21074c7b7e9bSMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2108cd33d02aSKevin Wolf { 2109cd33d02aSKevin Wolf char *endptr; 2110cd33d02aSKevin Wolf long ms; 2111cd33d02aSKevin Wolf struct QEMUTimer *timer; 2112cd33d02aSKevin Wolf bool expired = false; 2113cd33d02aSKevin Wolf 2114cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2115cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2116cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2117cd33d02aSKevin Wolf return 0; 2118cd33d02aSKevin Wolf } 2119cd33d02aSKevin Wolf 2120cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2121cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2122cd33d02aSKevin Wolf 2123cd33d02aSKevin Wolf while (!expired) { 2124cd33d02aSKevin Wolf main_loop_wait(false); 2125cd33d02aSKevin Wolf } 2126cd33d02aSKevin Wolf 2127cd33d02aSKevin Wolf timer_free(timer); 2128cd33d02aSKevin Wolf 2129cd33d02aSKevin Wolf return 0; 2130cd33d02aSKevin Wolf } 2131cd33d02aSKevin Wolf 2132cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2133cd33d02aSKevin Wolf .name = "sleep", 2134cd33d02aSKevin Wolf .argmin = 1, 2135cd33d02aSKevin Wolf .argmax = 1, 2136cd33d02aSKevin Wolf .cfunc = sleep_f, 2137cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2138cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2139cd33d02aSKevin Wolf }; 2140cd33d02aSKevin Wolf 2141f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2142f18a834aSKevin Wolf { 2143f18a834aSKevin Wolf if (cmd) { 2144f18a834aSKevin Wolf printf("%s ", cmd); 2145f18a834aSKevin Wolf } else { 2146f18a834aSKevin Wolf printf("%s ", ct->name); 2147f18a834aSKevin Wolf if (ct->altname) { 2148f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2149f18a834aSKevin Wolf } 2150f18a834aSKevin Wolf } 2151f18a834aSKevin Wolf 2152f18a834aSKevin Wolf if (ct->args) { 2153f18a834aSKevin Wolf printf("%s ", ct->args); 2154f18a834aSKevin Wolf } 2155f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2156f18a834aSKevin Wolf } 2157f18a834aSKevin Wolf 2158f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2159f18a834aSKevin Wolf { 2160f18a834aSKevin Wolf help_oneline(cmd, ct); 2161f18a834aSKevin Wolf if (ct->help) { 2162f18a834aSKevin Wolf ct->help(); 2163f18a834aSKevin Wolf } 2164f18a834aSKevin Wolf } 2165f18a834aSKevin Wolf 2166f18a834aSKevin Wolf static void help_all(void) 2167f18a834aSKevin Wolf { 2168f18a834aSKevin Wolf const cmdinfo_t *ct; 2169f18a834aSKevin Wolf 2170f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2171f18a834aSKevin Wolf help_oneline(ct->name, ct); 2172f18a834aSKevin Wolf } 2173f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2174f18a834aSKevin Wolf } 2175f18a834aSKevin Wolf 21764c7b7e9bSMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2177f18a834aSKevin Wolf { 2178f18a834aSKevin Wolf const cmdinfo_t *ct; 2179f18a834aSKevin Wolf 2180f18a834aSKevin Wolf if (argc == 1) { 2181f18a834aSKevin Wolf help_all(); 2182f18a834aSKevin Wolf return 0; 2183f18a834aSKevin Wolf } 2184f18a834aSKevin Wolf 2185f18a834aSKevin Wolf ct = find_command(argv[1]); 2186f18a834aSKevin Wolf if (ct == NULL) { 2187f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2188f18a834aSKevin Wolf return 0; 2189f18a834aSKevin Wolf } 2190f18a834aSKevin Wolf 2191f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2192f18a834aSKevin Wolf return 0; 2193f18a834aSKevin Wolf } 2194f18a834aSKevin Wolf 2195f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2196f18a834aSKevin Wolf .name = "help", 2197f18a834aSKevin Wolf .altname = "?", 2198f18a834aSKevin Wolf .cfunc = help_f, 2199f18a834aSKevin Wolf .argmin = 0, 2200f18a834aSKevin Wolf .argmax = 1, 2201f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2202f18a834aSKevin Wolf .args = "[command]", 2203f18a834aSKevin Wolf .oneline = "help for one or all commands", 2204f18a834aSKevin Wolf }; 2205f18a834aSKevin Wolf 22064c7b7e9bSMax Reitz bool qemuio_command(BlockBackend *blk, const char *cmd) 2207dd583296SKevin Wolf { 2208dd583296SKevin Wolf char *input; 2209dd583296SKevin Wolf const cmdinfo_t *ct; 2210dd583296SKevin Wolf char **v; 2211dd583296SKevin Wolf int c; 2212dd583296SKevin Wolf bool done = false; 2213dd583296SKevin Wolf 2214dd583296SKevin Wolf input = g_strdup(cmd); 2215dd583296SKevin Wolf v = breakline(input, &c); 2216dd583296SKevin Wolf if (c) { 2217dd583296SKevin Wolf ct = find_command(v[0]); 2218dd583296SKevin Wolf if (ct) { 22194c7b7e9bSMax Reitz done = command(blk, ct, c, v); 2220dd583296SKevin Wolf } else { 2221dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2222dd583296SKevin Wolf } 2223dd583296SKevin Wolf } 2224dd583296SKevin Wolf g_free(input); 2225dd583296SKevin Wolf g_free(v); 2226dd583296SKevin Wolf 2227dd583296SKevin Wolf return done; 2228dd583296SKevin Wolf } 2229dd583296SKevin Wolf 2230797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2231797ac58cSKevin Wolf { 2232797ac58cSKevin Wolf /* initialize commands */ 2233c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2234c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2235c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2236c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2237c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2238c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2239c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2240c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2241c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2242c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2243c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2244c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2245c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2246c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2247c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 22485bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2249c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 22504cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2251c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2252c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2253c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2254cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 22550e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2256797ac58cSKevin Wolf } 2257