1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4093ea232SEric Blake * Copyright (C) 2009-2016 Red Hat, Inc. 5797ac58cSKevin Wolf * Copyright (c) 2003-2005 Silicon Graphics, Inc. 6797ac58cSKevin Wolf * 7797ac58cSKevin Wolf * This work is licensed under the terms of the GNU GPL, version 2 or later. 8797ac58cSKevin Wolf * See the COPYING file in the top-level directory. 9797ac58cSKevin Wolf */ 10797ac58cSKevin Wolf 1180c71a24SPeter Maydell #include "qemu/osdep.h" 12da34e65cSMarkus Armbruster #include "qapi/error.h" 13dc900c35SAlberto Garcia #include "qapi/qmp/qdict.h" 143d21994fSKevin Wolf #include "qemu-io.h" 154c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 164c7b7e9bSMax Reitz #include "block/block.h" 174c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 18a8d8ecb7SMax Reitz #include "block/qapi.h" 19d49b6836SMarkus Armbruster #include "qemu/error-report.h" 206a1751b7SAlex Bligh #include "qemu/main-loop.h" 21922a01a0SMarkus Armbruster #include "qemu/option.h" 22cd33d02aSKevin Wolf #include "qemu/timer.h" 23f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 24797ac58cSKevin Wolf 25797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 26797ac58cSKevin Wolf 27f9883880SStefan Weil bool qemuio_misalign; 28797ac58cSKevin Wolf 29c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 30c2cdf5c5SKevin Wolf static int ncmds; 31c2cdf5c5SKevin Wolf 32c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 33c2cdf5c5SKevin Wolf { 34c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 35c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 36c2cdf5c5SKevin Wolf } 37c2cdf5c5SKevin Wolf 38c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 39c2cdf5c5SKevin Wolf { 406aabeb58SPeter Maydell /* ci->perm assumes a file is open, but the GLOBAL and NOFILE_OK 416aabeb58SPeter Maydell * flags allow it not to be, so that combination is invalid. 426aabeb58SPeter Maydell * Catch it now rather than letting it manifest as a crash if a 436aabeb58SPeter Maydell * particular set of command line options are used. 446aabeb58SPeter Maydell */ 456aabeb58SPeter Maydell assert(ci->perm == 0 || 466aabeb58SPeter Maydell (ci->flags & (CMD_FLAG_GLOBAL | CMD_NOFILE_OK)) == 0); 4702c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 48c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 49c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 50c2cdf5c5SKevin Wolf } 51c2cdf5c5SKevin Wolf 52b444d0e9SMax Reitz void qemuio_command_usage(const cmdinfo_t *ci) 53c2cdf5c5SKevin Wolf { 54c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 55c2cdf5c5SKevin Wolf } 56c2cdf5c5SKevin Wolf 574c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 58c2cdf5c5SKevin Wolf { 59c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 60c2cdf5c5SKevin Wolf return 1; 61c2cdf5c5SKevin Wolf } 624c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 63c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 64c2cdf5c5SKevin Wolf return 0; 65c2cdf5c5SKevin Wolf } 66c2cdf5c5SKevin Wolf return 1; 67c2cdf5c5SKevin Wolf } 68c2cdf5c5SKevin Wolf 69b32d7a39SMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 703d21994fSKevin Wolf char **argv) 71c2cdf5c5SKevin Wolf { 72c2cdf5c5SKevin Wolf char *cmd = argv[0]; 73c2cdf5c5SKevin Wolf 744c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 75b32d7a39SMax Reitz return -EINVAL; 76c2cdf5c5SKevin Wolf } 77c2cdf5c5SKevin Wolf 78c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 79c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 80c2cdf5c5SKevin Wolf fprintf(stderr, 81c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 82c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 83c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 84c2cdf5c5SKevin Wolf fprintf(stderr, 85c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 86c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 87c2cdf5c5SKevin Wolf } else { 88c2cdf5c5SKevin Wolf fprintf(stderr, 89c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 90c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 91c2cdf5c5SKevin Wolf } 92b32d7a39SMax Reitz return -EINVAL; 93c2cdf5c5SKevin Wolf } 94887354bdSKevin Wolf 95887354bdSKevin Wolf /* Request additional permissions if necessary for this command. The caller 96887354bdSKevin Wolf * is responsible for restoring the original permissions afterwards if this 97887354bdSKevin Wolf * is what it wants. */ 98887354bdSKevin Wolf if (ct->perm && blk_is_available(blk)) { 99887354bdSKevin Wolf uint64_t orig_perm, orig_shared_perm; 100887354bdSKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 101887354bdSKevin Wolf 102887354bdSKevin Wolf if (ct->perm & ~orig_perm) { 103887354bdSKevin Wolf uint64_t new_perm; 104887354bdSKevin Wolf Error *local_err = NULL; 105887354bdSKevin Wolf int ret; 106887354bdSKevin Wolf 107887354bdSKevin Wolf new_perm = orig_perm | ct->perm; 108887354bdSKevin Wolf 109887354bdSKevin Wolf ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err); 110887354bdSKevin Wolf if (ret < 0) { 111887354bdSKevin Wolf error_report_err(local_err); 112b32d7a39SMax Reitz return ret; 113887354bdSKevin Wolf } 114887354bdSKevin Wolf } 115887354bdSKevin Wolf } 116887354bdSKevin Wolf 117d339d766SRichard W.M. Jones qemu_reset_optind(); 118b32d7a39SMax Reitz return ct->cfunc(blk, argc, argv); 119c2cdf5c5SKevin Wolf } 120c2cdf5c5SKevin Wolf 121c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 122c2cdf5c5SKevin Wolf { 123c2cdf5c5SKevin Wolf cmdinfo_t *ct; 124c2cdf5c5SKevin Wolf 125c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 126c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 127c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 128c2cdf5c5SKevin Wolf { 129c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 130c2cdf5c5SKevin Wolf } 131c2cdf5c5SKevin Wolf } 132c2cdf5c5SKevin Wolf return NULL; 133c2cdf5c5SKevin Wolf } 134c2cdf5c5SKevin Wolf 1354694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1364694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1374694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1384694020dSStefan Hajnoczi void *opaque) 1394694020dSStefan Hajnoczi { 1404694020dSStefan Hajnoczi cmdinfo_t *ct; 1414694020dSStefan Hajnoczi size_t input_len = strlen(input); 1424694020dSStefan Hajnoczi 1434694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1444694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1454694020dSStefan Hajnoczi fn(ct->name, opaque); 1464694020dSStefan Hajnoczi } 1474694020dSStefan Hajnoczi } 1484694020dSStefan Hajnoczi } 1494694020dSStefan Hajnoczi 150c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 151c2cdf5c5SKevin Wolf { 152c2cdf5c5SKevin Wolf int c = 0; 153c2cdf5c5SKevin Wolf char *p; 1545839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 155c2cdf5c5SKevin Wolf 156c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 157c2cdf5c5SKevin Wolf if (!*p) { 158c2cdf5c5SKevin Wolf continue; 159c2cdf5c5SKevin Wolf } 160c2cdf5c5SKevin Wolf c++; 16108193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 162c2cdf5c5SKevin Wolf rval[c - 1] = p; 163c2cdf5c5SKevin Wolf rval[c] = NULL; 164c2cdf5c5SKevin Wolf } 165c2cdf5c5SKevin Wolf *count = c; 166c2cdf5c5SKevin Wolf return rval; 167c2cdf5c5SKevin Wolf } 168c2cdf5c5SKevin Wolf 169797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 170797ac58cSKevin Wolf { 171f17fd4fdSMarkus Armbruster int err; 172f46bfdbfSMarkus Armbruster uint64_t value; 173ef5a7885SJohn Snow 174f17fd4fdSMarkus Armbruster err = qemu_strtosz(s, NULL, &value); 175f17fd4fdSMarkus Armbruster if (err < 0) { 176f17fd4fdSMarkus Armbruster return err; 177f17fd4fdSMarkus Armbruster } 178f46bfdbfSMarkus Armbruster if (value > INT64_MAX) { 179f46bfdbfSMarkus Armbruster return -ERANGE; 180f46bfdbfSMarkus Armbruster } 181f17fd4fdSMarkus Armbruster return value; 182797ac58cSKevin Wolf } 183797ac58cSKevin Wolf 184a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 185a9ecfa00SJohn Snow { 186a9ecfa00SJohn Snow switch (rc) { 187a9ecfa00SJohn Snow case -EINVAL: 188a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 189a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 190a9ecfa00SJohn Snow break; 191a9ecfa00SJohn Snow case -ERANGE: 192a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 193a9ecfa00SJohn Snow break; 194a9ecfa00SJohn Snow default: 195a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 196a9ecfa00SJohn Snow } 197a9ecfa00SJohn Snow } 198a9ecfa00SJohn Snow 1990b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 2000b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 2010b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 2020b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 2030b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 2040b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 2050b613881SKevin Wolf 2060b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 2070b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 2080b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 2090b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 2100b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 2110b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 2120b613881SKevin Wolf 2130b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 2140b613881SKevin Wolf { 2150b613881SKevin Wolf char *trim; 2160b613881SKevin Wolf const char *suffix; 2170b613881SKevin Wolf 2180b613881SKevin Wolf if (value >= EXABYTES(1)) { 2190b613881SKevin Wolf suffix = " EiB"; 2200b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 2210b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 2220b613881SKevin Wolf suffix = " PiB"; 2230b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 2240b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 2250b613881SKevin Wolf suffix = " TiB"; 2260b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 2270b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 2280b613881SKevin Wolf suffix = " GiB"; 2290b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 2300b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 2310b613881SKevin Wolf suffix = " MiB"; 2320b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2330b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2340b613881SKevin Wolf suffix = " KiB"; 2350b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2360b613881SKevin Wolf } else { 2370b613881SKevin Wolf suffix = " bytes"; 2380b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2390b613881SKevin Wolf } 2400b613881SKevin Wolf 2410b613881SKevin Wolf trim = strstr(str, ".000"); 2420b613881SKevin Wolf if (trim) { 2430b613881SKevin Wolf strcpy(trim, suffix); 2440b613881SKevin Wolf } else { 2450b613881SKevin Wolf strcat(str, suffix); 2460b613881SKevin Wolf } 2470b613881SKevin Wolf } 2480b613881SKevin Wolf 2490b613881SKevin Wolf 2500b613881SKevin Wolf 2510b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 2520b613881SKevin Wolf { 2530b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 2540b613881SKevin Wolf if (t1.tv_usec < 0) { 2550b613881SKevin Wolf t1.tv_usec += 1000000; 2560b613881SKevin Wolf t1.tv_sec--; 2570b613881SKevin Wolf } 2580b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2590b613881SKevin Wolf return t1; 2600b613881SKevin Wolf } 2610b613881SKevin Wolf 2620b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 2630b613881SKevin Wolf { 2640b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 2650b613881SKevin Wolf } 2660b613881SKevin Wolf 2670b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2680b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2690b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2700b613881SKevin Wolf 2710b613881SKevin Wolf enum { 2720b613881SKevin Wolf DEFAULT_TIME = 0x0, 2730b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2740b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2750b613881SKevin Wolf }; 2760b613881SKevin Wolf 2770b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 2780b613881SKevin Wolf { 2790b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 2800b613881SKevin Wolf 2810b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2820b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 2830b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 2840b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2850b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2860b613881SKevin Wolf (unsigned int) (usec * 100)); 2870b613881SKevin Wolf return; 2880b613881SKevin Wolf } 2890b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 2900b613881SKevin Wolf } 2910b613881SKevin Wolf 2920b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 2930b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 2940b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 2950b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 2960b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 2970b613881SKevin Wolf (unsigned int) (usec * 100)); 2980b613881SKevin Wolf } else { 2990b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 3000b613881SKevin Wolf } 3010b613881SKevin Wolf } 3020b613881SKevin Wolf 303797ac58cSKevin Wolf /* 304797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 305797ac58cSKevin Wolf * 306797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 307797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 308797ac58cSKevin Wolf */ 309797ac58cSKevin Wolf static int parse_pattern(const char *arg) 310797ac58cSKevin Wolf { 311797ac58cSKevin Wolf char *endptr = NULL; 312797ac58cSKevin Wolf long pattern; 313797ac58cSKevin Wolf 314797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 315797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 316797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 317797ac58cSKevin Wolf return -1; 318797ac58cSKevin Wolf } 319797ac58cSKevin Wolf 320797ac58cSKevin Wolf return pattern; 321797ac58cSKevin Wolf } 322797ac58cSKevin Wolf 323797ac58cSKevin Wolf /* 324797ac58cSKevin Wolf * Memory allocation helpers. 325797ac58cSKevin Wolf * 326797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 327797ac58cSKevin Wolf * that is specified on the command line. 328797ac58cSKevin Wolf */ 329797ac58cSKevin Wolf 330797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3314c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 332797ac58cSKevin Wolf { 333797ac58cSKevin Wolf void *buf; 334797ac58cSKevin Wolf 335797ac58cSKevin Wolf if (qemuio_misalign) { 336797ac58cSKevin Wolf len += MISALIGN_OFFSET; 337797ac58cSKevin Wolf } 3384c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 339797ac58cSKevin Wolf memset(buf, pattern, len); 340797ac58cSKevin Wolf if (qemuio_misalign) { 341797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 342797ac58cSKevin Wolf } 343797ac58cSKevin Wolf return buf; 344797ac58cSKevin Wolf } 345797ac58cSKevin Wolf 346797ac58cSKevin Wolf static void qemu_io_free(void *p) 347797ac58cSKevin Wolf { 348797ac58cSKevin Wolf if (qemuio_misalign) { 349797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 350797ac58cSKevin Wolf } 351797ac58cSKevin Wolf qemu_vfree(p); 352797ac58cSKevin Wolf } 353797ac58cSKevin Wolf 3549b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 355797ac58cSKevin Wolf { 3569b0beaf3SJohn Snow uint64_t i; 3579b0beaf3SJohn Snow int j; 358797ac58cSKevin Wolf const uint8_t *p; 359797ac58cSKevin Wolf 360797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 361797ac58cSKevin Wolf const uint8_t *s = p; 362797ac58cSKevin Wolf 363797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 364797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 365797ac58cSKevin Wolf printf("%02x ", *p); 366797ac58cSKevin Wolf } 367797ac58cSKevin Wolf printf(" "); 368797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 369797ac58cSKevin Wolf if (isalnum(*s)) { 370797ac58cSKevin Wolf printf("%c", *s); 371797ac58cSKevin Wolf } else { 372797ac58cSKevin Wolf printf("."); 373797ac58cSKevin Wolf } 374797ac58cSKevin Wolf } 375797ac58cSKevin Wolf printf("\n"); 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf } 378797ac58cSKevin Wolf 379797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 380dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 381797ac58cSKevin Wolf { 382797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 383797ac58cSKevin Wolf 384797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 385797ac58cSKevin Wolf if (!Cflag) { 386797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 387797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 3889b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 389797ac58cSKevin Wolf op, total, count, offset); 390797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 391797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 392797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 3939b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 394797ac58cSKevin Wolf total, cnt, ts, 395797ac58cSKevin Wolf tdiv((double)total, *t), 396797ac58cSKevin Wolf tdiv((double)cnt, *t)); 397797ac58cSKevin Wolf } 398797ac58cSKevin Wolf } 399797ac58cSKevin Wolf 400797ac58cSKevin Wolf /* 401797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 402797ac58cSKevin Wolf * vector matching it. 403797ac58cSKevin Wolf */ 404797ac58cSKevin Wolf static void * 4054c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 406797ac58cSKevin Wolf int pattern) 407797ac58cSKevin Wolf { 408797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 409797ac58cSKevin Wolf size_t count = 0; 410797ac58cSKevin Wolf void *buf = NULL; 411797ac58cSKevin Wolf void *p; 412797ac58cSKevin Wolf int i; 413797ac58cSKevin Wolf 414797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 415797ac58cSKevin Wolf char *arg = argv[i]; 416797ac58cSKevin Wolf int64_t len; 417797ac58cSKevin Wolf 418797ac58cSKevin Wolf len = cvtnum(arg); 419797ac58cSKevin Wolf if (len < 0) { 420a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 421797ac58cSKevin Wolf goto fail; 422797ac58cSKevin Wolf } 423797ac58cSKevin Wolf 4243026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 4253026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 4263026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 4273026c468SAlberto Garcia goto fail; 4283026c468SAlberto Garcia } 4293026c468SAlberto Garcia 4303026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 4313026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 4323026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 433797ac58cSKevin Wolf goto fail; 434797ac58cSKevin Wolf } 435797ac58cSKevin Wolf 436797ac58cSKevin Wolf sizes[i] = len; 437797ac58cSKevin Wolf count += len; 438797ac58cSKevin Wolf } 439797ac58cSKevin Wolf 440797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 441797ac58cSKevin Wolf 4424c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 443797ac58cSKevin Wolf 444797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 445797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 446797ac58cSKevin Wolf p += sizes[i]; 447797ac58cSKevin Wolf } 448797ac58cSKevin Wolf 449797ac58cSKevin Wolf fail: 450797ac58cSKevin Wolf g_free(sizes); 451797ac58cSKevin Wolf return buf; 452797ac58cSKevin Wolf } 453797ac58cSKevin Wolf 4549b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 455f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 456797ac58cSKevin Wolf { 457f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4589b0beaf3SJohn Snow return -ERANGE; 4599b0beaf3SJohn Snow } 4609b0beaf3SJohn Snow 461f5a5ca79SManos Pitsidianakis *total = blk_pread(blk, offset, (uint8_t *)buf, bytes); 462797ac58cSKevin Wolf if (*total < 0) { 463797ac58cSKevin Wolf return *total; 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf return 1; 466797ac58cSKevin Wolf } 467797ac58cSKevin Wolf 4689b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 469f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 470797ac58cSKevin Wolf { 471f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 4729b0beaf3SJohn Snow return -ERANGE; 4739b0beaf3SJohn Snow } 4749b0beaf3SJohn Snow 475f5a5ca79SManos Pitsidianakis *total = blk_pwrite(blk, offset, (uint8_t *)buf, bytes, flags); 476797ac58cSKevin Wolf if (*total < 0) { 477797ac58cSKevin Wolf return *total; 478797ac58cSKevin Wolf } 479797ac58cSKevin Wolf return 1; 480797ac58cSKevin Wolf } 481797ac58cSKevin Wolf 482797ac58cSKevin Wolf typedef struct { 4834c7b7e9bSMax Reitz BlockBackend *blk; 484797ac58cSKevin Wolf int64_t offset; 485f5a5ca79SManos Pitsidianakis int64_t bytes; 4869b0beaf3SJohn Snow int64_t *total; 487770e0e0eSEric Blake int flags; 488797ac58cSKevin Wolf int ret; 489797ac58cSKevin Wolf bool done; 490797ac58cSKevin Wolf } CoWriteZeroes; 491797ac58cSKevin Wolf 492d004bd52SEric Blake static void coroutine_fn co_pwrite_zeroes_entry(void *opaque) 493797ac58cSKevin Wolf { 494797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 495797ac58cSKevin Wolf 496f5a5ca79SManos Pitsidianakis data->ret = blk_co_pwrite_zeroes(data->blk, data->offset, data->bytes, 497770e0e0eSEric Blake data->flags); 498797ac58cSKevin Wolf data->done = true; 499797ac58cSKevin Wolf if (data->ret < 0) { 500797ac58cSKevin Wolf *data->total = data->ret; 501797ac58cSKevin Wolf return; 502797ac58cSKevin Wolf } 503797ac58cSKevin Wolf 504f5a5ca79SManos Pitsidianakis *data->total = data->bytes; 505797ac58cSKevin Wolf } 506797ac58cSKevin Wolf 507d004bd52SEric Blake static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, 508f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 509797ac58cSKevin Wolf { 510797ac58cSKevin Wolf Coroutine *co; 511797ac58cSKevin Wolf CoWriteZeroes data = { 5124c7b7e9bSMax Reitz .blk = blk, 513797ac58cSKevin Wolf .offset = offset, 514f5a5ca79SManos Pitsidianakis .bytes = bytes, 515797ac58cSKevin Wolf .total = total, 516770e0e0eSEric Blake .flags = flags, 517797ac58cSKevin Wolf .done = false, 518797ac58cSKevin Wolf }; 519797ac58cSKevin Wolf 520f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5219b0beaf3SJohn Snow return -ERANGE; 5229b0beaf3SJohn Snow } 5239b0beaf3SJohn Snow 5240b8b8753SPaolo Bonzini co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data); 525324ec3e4SFam Zheng bdrv_coroutine_enter(blk_bs(blk), co); 526797ac58cSKevin Wolf while (!data.done) { 5274c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 528797ac58cSKevin Wolf } 529797ac58cSKevin Wolf if (data.ret < 0) { 530797ac58cSKevin Wolf return data.ret; 531797ac58cSKevin Wolf } else { 532797ac58cSKevin Wolf return 1; 533797ac58cSKevin Wolf } 534797ac58cSKevin Wolf } 535797ac58cSKevin Wolf 5364c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 537f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 538797ac58cSKevin Wolf { 539797ac58cSKevin Wolf int ret; 540797ac58cSKevin Wolf 541f5a5ca79SManos Pitsidianakis if (bytes >> 9 > BDRV_REQUEST_MAX_SECTORS) { 5429b0beaf3SJohn Snow return -ERANGE; 5439b0beaf3SJohn Snow } 5449b0beaf3SJohn Snow 545f5a5ca79SManos Pitsidianakis ret = blk_pwrite_compressed(blk, offset, buf, bytes); 546797ac58cSKevin Wolf if (ret < 0) { 547797ac58cSKevin Wolf return ret; 548797ac58cSKevin Wolf } 549f5a5ca79SManos Pitsidianakis *total = bytes; 550797ac58cSKevin Wolf return 1; 551797ac58cSKevin Wolf } 552797ac58cSKevin Wolf 5534c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5549b0beaf3SJohn Snow int64_t count, int64_t *total) 555797ac58cSKevin Wolf { 5569b0beaf3SJohn Snow if (count > INT_MAX) { 5579b0beaf3SJohn Snow return -ERANGE; 5589b0beaf3SJohn Snow } 5599b0beaf3SJohn Snow 5604c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 561797ac58cSKevin Wolf if (*total < 0) { 562797ac58cSKevin Wolf return *total; 563797ac58cSKevin Wolf } 564797ac58cSKevin Wolf return 1; 565797ac58cSKevin Wolf } 566797ac58cSKevin Wolf 5674c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 5689b0beaf3SJohn Snow int64_t count, int64_t *total) 569797ac58cSKevin Wolf { 5709b0beaf3SJohn Snow if (count > INT_MAX) { 5719b0beaf3SJohn Snow return -ERANGE; 5729b0beaf3SJohn Snow } 5739b0beaf3SJohn Snow 5744c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 575797ac58cSKevin Wolf if (*total < 0) { 576797ac58cSKevin Wolf return *total; 577797ac58cSKevin Wolf } 578797ac58cSKevin Wolf return 1; 579797ac58cSKevin Wolf } 580797ac58cSKevin Wolf 581797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 582797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 583797ac58cSKevin Wolf { 584797ac58cSKevin Wolf *(int *)opaque = ret; 585797ac58cSKevin Wolf } 586797ac58cSKevin Wolf 5874c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 588797ac58cSKevin Wolf int64_t offset, int *total) 589797ac58cSKevin Wolf { 590797ac58cSKevin Wolf int async_ret = NOT_DONE; 591797ac58cSKevin Wolf 5927b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 593797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 594797ac58cSKevin Wolf main_loop_wait(false); 595797ac58cSKevin Wolf } 596797ac58cSKevin Wolf 597797ac58cSKevin Wolf *total = qiov->size; 598797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 599797ac58cSKevin Wolf } 600797ac58cSKevin Wolf 6014c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 602770e0e0eSEric Blake int64_t offset, int flags, int *total) 603797ac58cSKevin Wolf { 604797ac58cSKevin Wolf int async_ret = NOT_DONE; 605797ac58cSKevin Wolf 606770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 607797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 608797ac58cSKevin Wolf main_loop_wait(false); 609797ac58cSKevin Wolf } 610797ac58cSKevin Wolf 611797ac58cSKevin Wolf *total = qiov->size; 612797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 613797ac58cSKevin Wolf } 614797ac58cSKevin Wolf 615797ac58cSKevin Wolf static void read_help(void) 616797ac58cSKevin Wolf { 617797ac58cSKevin Wolf printf( 618797ac58cSKevin Wolf "\n" 619797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 620797ac58cSKevin Wolf "\n" 621797ac58cSKevin Wolf " Example:\n" 622797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 623797ac58cSKevin Wolf "\n" 624797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 625797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 626797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 627797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 628797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 629093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 630797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 631797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 632797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 633797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 634797ac58cSKevin Wolf "\n"); 635797ac58cSKevin Wolf } 636797ac58cSKevin Wolf 637b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 638797ac58cSKevin Wolf 639797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 640797ac58cSKevin Wolf .name = "read", 641797ac58cSKevin Wolf .altname = "r", 642797ac58cSKevin Wolf .cfunc = read_f, 643797ac58cSKevin Wolf .argmin = 2, 644797ac58cSKevin Wolf .argmax = -1, 645093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 646797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 647797ac58cSKevin Wolf .help = read_help, 648797ac58cSKevin Wolf }; 649797ac58cSKevin Wolf 650b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 651797ac58cSKevin Wolf { 652797ac58cSKevin Wolf struct timeval t1, t2; 653093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 654dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 655b32d7a39SMax Reitz int c, cnt, ret; 656797ac58cSKevin Wolf char *buf; 657797ac58cSKevin Wolf int64_t offset; 6589b0beaf3SJohn Snow int64_t count; 659797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 6609b0beaf3SJohn Snow int64_t total = 0; 6619b0beaf3SJohn Snow int pattern = 0; 6629b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 663797ac58cSKevin Wolf 664b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 665797ac58cSKevin Wolf switch (c) { 666797ac58cSKevin Wolf case 'b': 667dc38852aSEric Blake bflag = true; 668797ac58cSKevin Wolf break; 669797ac58cSKevin Wolf case 'C': 670dc38852aSEric Blake Cflag = true; 671797ac58cSKevin Wolf break; 672797ac58cSKevin Wolf case 'l': 673dc38852aSEric Blake lflag = true; 674797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 675797ac58cSKevin Wolf if (pattern_count < 0) { 676a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 677b32d7a39SMax Reitz return pattern_count; 678797ac58cSKevin Wolf } 679797ac58cSKevin Wolf break; 680797ac58cSKevin Wolf case 'p': 681093ea232SEric Blake /* Ignored for backwards compatibility */ 682797ac58cSKevin Wolf break; 683797ac58cSKevin Wolf case 'P': 684dc38852aSEric Blake Pflag = true; 685797ac58cSKevin Wolf pattern = parse_pattern(optarg); 686797ac58cSKevin Wolf if (pattern < 0) { 687b32d7a39SMax Reitz return -EINVAL; 688797ac58cSKevin Wolf } 689797ac58cSKevin Wolf break; 690797ac58cSKevin Wolf case 'q': 691dc38852aSEric Blake qflag = true; 692797ac58cSKevin Wolf break; 693797ac58cSKevin Wolf case 's': 694dc38852aSEric Blake sflag = true; 695797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 696797ac58cSKevin Wolf if (pattern_offset < 0) { 697a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 698b32d7a39SMax Reitz return pattern_offset; 699797ac58cSKevin Wolf } 700797ac58cSKevin Wolf break; 701797ac58cSKevin Wolf case 'v': 702dc38852aSEric Blake vflag = true; 703797ac58cSKevin Wolf break; 704797ac58cSKevin Wolf default: 705b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 706b32d7a39SMax Reitz return -EINVAL; 707797ac58cSKevin Wolf } 708797ac58cSKevin Wolf } 709797ac58cSKevin Wolf 710797ac58cSKevin Wolf if (optind != argc - 2) { 711b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 712b32d7a39SMax Reitz return -EINVAL; 713797ac58cSKevin Wolf } 714797ac58cSKevin Wolf 715797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 716797ac58cSKevin Wolf if (offset < 0) { 717a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 718b32d7a39SMax Reitz return offset; 719797ac58cSKevin Wolf } 720797ac58cSKevin Wolf 721797ac58cSKevin Wolf optind++; 722797ac58cSKevin Wolf count = cvtnum(argv[optind]); 723797ac58cSKevin Wolf if (count < 0) { 724a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 725b32d7a39SMax Reitz return count; 7263026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7279b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7283026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 729b32d7a39SMax Reitz return -EINVAL; 730797ac58cSKevin Wolf } 731797ac58cSKevin Wolf 732797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 733b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 734b32d7a39SMax Reitz return -EINVAL; 735797ac58cSKevin Wolf } 736797ac58cSKevin Wolf 737797ac58cSKevin Wolf if (!lflag) { 738797ac58cSKevin Wolf pattern_count = count - pattern_offset; 739797ac58cSKevin Wolf } 740797ac58cSKevin Wolf 741797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 742797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 743b32d7a39SMax Reitz return -EINVAL; 744797ac58cSKevin Wolf } 745797ac58cSKevin Wolf 746093ea232SEric Blake if (bflag) { 7471bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 7481bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 749797ac58cSKevin Wolf offset); 750b32d7a39SMax Reitz return -EINVAL; 751797ac58cSKevin Wolf } 7521bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 7531bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 754797ac58cSKevin Wolf count); 755b32d7a39SMax Reitz return -EINVAL; 756797ac58cSKevin Wolf } 757797ac58cSKevin Wolf } 758797ac58cSKevin Wolf 7594c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 760797ac58cSKevin Wolf 761797ac58cSKevin Wolf gettimeofday(&t1, NULL); 7627b3f9712SEric Blake if (bflag) { 763b32d7a39SMax Reitz ret = do_load_vmstate(blk, buf, offset, count, &total); 764797ac58cSKevin Wolf } else { 765b32d7a39SMax Reitz ret = do_pread(blk, buf, offset, count, &total); 766797ac58cSKevin Wolf } 767797ac58cSKevin Wolf gettimeofday(&t2, NULL); 768797ac58cSKevin Wolf 769b32d7a39SMax Reitz if (ret < 0) { 770b32d7a39SMax Reitz printf("read failed: %s\n", strerror(-ret)); 771797ac58cSKevin Wolf goto out; 772797ac58cSKevin Wolf } 773b32d7a39SMax Reitz cnt = ret; 774b32d7a39SMax Reitz 775b32d7a39SMax Reitz ret = 0; 776797ac58cSKevin Wolf 777797ac58cSKevin Wolf if (Pflag) { 778797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 779797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 780797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 781797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 7829b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 783797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 784b32d7a39SMax Reitz ret = -EINVAL; 785797ac58cSKevin Wolf } 786797ac58cSKevin Wolf g_free(cmp_buf); 787797ac58cSKevin Wolf } 788797ac58cSKevin Wolf 789797ac58cSKevin Wolf if (qflag) { 790797ac58cSKevin Wolf goto out; 791797ac58cSKevin Wolf } 792797ac58cSKevin Wolf 793797ac58cSKevin Wolf if (vflag) { 794797ac58cSKevin Wolf dump_buffer(buf, offset, count); 795797ac58cSKevin Wolf } 796797ac58cSKevin Wolf 797797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 798797ac58cSKevin Wolf t2 = tsub(t2, t1); 799797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 800797ac58cSKevin Wolf 801797ac58cSKevin Wolf out: 802797ac58cSKevin Wolf qemu_io_free(buf); 803b32d7a39SMax Reitz return ret; 804797ac58cSKevin Wolf } 805797ac58cSKevin Wolf 806797ac58cSKevin Wolf static void readv_help(void) 807797ac58cSKevin Wolf { 808797ac58cSKevin Wolf printf( 809797ac58cSKevin Wolf "\n" 810797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 811797ac58cSKevin Wolf "\n" 812797ac58cSKevin Wolf " Example:\n" 813797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 814797ac58cSKevin Wolf "\n" 815797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 816797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 817797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 818797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 819797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 820797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 821797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 822797ac58cSKevin Wolf "\n"); 823797ac58cSKevin Wolf } 824797ac58cSKevin Wolf 825b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 826797ac58cSKevin Wolf 827797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 828797ac58cSKevin Wolf .name = "readv", 829797ac58cSKevin Wolf .cfunc = readv_f, 830797ac58cSKevin Wolf .argmin = 2, 831797ac58cSKevin Wolf .argmax = -1, 832797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 833797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 834797ac58cSKevin Wolf .help = readv_help, 835797ac58cSKevin Wolf }; 836797ac58cSKevin Wolf 837b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 838797ac58cSKevin Wolf { 839797ac58cSKevin Wolf struct timeval t1, t2; 840dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 841b32d7a39SMax Reitz int c, cnt, ret; 842797ac58cSKevin Wolf char *buf; 843797ac58cSKevin Wolf int64_t offset; 844797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 845797ac58cSKevin Wolf int total = 0; 846797ac58cSKevin Wolf int nr_iov; 847797ac58cSKevin Wolf QEMUIOVector qiov; 848797ac58cSKevin Wolf int pattern = 0; 849dc38852aSEric Blake bool Pflag = false; 850797ac58cSKevin Wolf 851b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 852797ac58cSKevin Wolf switch (c) { 853797ac58cSKevin Wolf case 'C': 854dc38852aSEric Blake Cflag = true; 855797ac58cSKevin Wolf break; 856797ac58cSKevin Wolf case 'P': 857dc38852aSEric Blake Pflag = true; 858797ac58cSKevin Wolf pattern = parse_pattern(optarg); 859797ac58cSKevin Wolf if (pattern < 0) { 860b32d7a39SMax Reitz return -EINVAL; 861797ac58cSKevin Wolf } 862797ac58cSKevin Wolf break; 863797ac58cSKevin Wolf case 'q': 864dc38852aSEric Blake qflag = true; 865797ac58cSKevin Wolf break; 866797ac58cSKevin Wolf case 'v': 867dc38852aSEric Blake vflag = true; 868797ac58cSKevin Wolf break; 869797ac58cSKevin Wolf default: 870b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 871b32d7a39SMax Reitz return -EINVAL; 872797ac58cSKevin Wolf } 873797ac58cSKevin Wolf } 874797ac58cSKevin Wolf 875797ac58cSKevin Wolf if (optind > argc - 2) { 876b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 877b32d7a39SMax Reitz return -EINVAL; 878797ac58cSKevin Wolf } 879797ac58cSKevin Wolf 880797ac58cSKevin Wolf 881797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 882797ac58cSKevin Wolf if (offset < 0) { 883a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 884b32d7a39SMax Reitz return offset; 885797ac58cSKevin Wolf } 886797ac58cSKevin Wolf optind++; 887797ac58cSKevin Wolf 888797ac58cSKevin Wolf nr_iov = argc - optind; 8894c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 890797ac58cSKevin Wolf if (buf == NULL) { 891b32d7a39SMax Reitz return -EINVAL; 892797ac58cSKevin Wolf } 893797ac58cSKevin Wolf 894797ac58cSKevin Wolf gettimeofday(&t1, NULL); 895b32d7a39SMax Reitz ret = do_aio_readv(blk, &qiov, offset, &total); 896797ac58cSKevin Wolf gettimeofday(&t2, NULL); 897797ac58cSKevin Wolf 898b32d7a39SMax Reitz if (ret < 0) { 899b32d7a39SMax Reitz printf("readv failed: %s\n", strerror(-ret)); 900797ac58cSKevin Wolf goto out; 901797ac58cSKevin Wolf } 902b32d7a39SMax Reitz cnt = ret; 903b32d7a39SMax Reitz 904b32d7a39SMax Reitz ret = 0; 905797ac58cSKevin Wolf 906797ac58cSKevin Wolf if (Pflag) { 907797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 908797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 909797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 910797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 911cf67b692SStefan Weil PRId64 ", %zu bytes\n", offset, qiov.size); 912b32d7a39SMax Reitz ret = -EINVAL; 913797ac58cSKevin Wolf } 914797ac58cSKevin Wolf g_free(cmp_buf); 915797ac58cSKevin Wolf } 916797ac58cSKevin Wolf 917797ac58cSKevin Wolf if (qflag) { 918797ac58cSKevin Wolf goto out; 919797ac58cSKevin Wolf } 920797ac58cSKevin Wolf 921797ac58cSKevin Wolf if (vflag) { 922797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 923797ac58cSKevin Wolf } 924797ac58cSKevin Wolf 925797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 926797ac58cSKevin Wolf t2 = tsub(t2, t1); 927797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 928797ac58cSKevin Wolf 929797ac58cSKevin Wolf out: 930797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 931797ac58cSKevin Wolf qemu_io_free(buf); 932b32d7a39SMax Reitz return ret; 933797ac58cSKevin Wolf } 934797ac58cSKevin Wolf 935797ac58cSKevin Wolf static void write_help(void) 936797ac58cSKevin Wolf { 937797ac58cSKevin Wolf printf( 938797ac58cSKevin Wolf "\n" 939797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 940797ac58cSKevin Wolf "\n" 941797ac58cSKevin Wolf " Example:\n" 942797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 943797ac58cSKevin Wolf "\n" 944797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 945797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 946797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9474c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 948770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 949*c6e3f520SKevin Wolf " -n, -- with -z, don't allow slow fallback\n" 950093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 951797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 952797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 953797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 954c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 955d004bd52SEric Blake " -z, -- write zeroes using blk_co_pwrite_zeroes\n" 956797ac58cSKevin Wolf "\n"); 957797ac58cSKevin Wolf } 958797ac58cSKevin Wolf 959b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 960797ac58cSKevin Wolf 961797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 962797ac58cSKevin Wolf .name = "write", 963797ac58cSKevin Wolf .altname = "w", 964797ac58cSKevin Wolf .cfunc = write_f, 965887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 966797ac58cSKevin Wolf .argmin = 2, 967797ac58cSKevin Wolf .argmax = -1, 968*c6e3f520SKevin Wolf .args = "[-bcCfnquz] [-P pattern] off len", 969797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 970797ac58cSKevin Wolf .help = write_help, 971797ac58cSKevin Wolf }; 972797ac58cSKevin Wolf 973b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 974797ac58cSKevin Wolf { 975797ac58cSKevin Wolf struct timeval t1, t2; 976093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 977dc38852aSEric Blake bool Pflag = false, zflag = false, cflag = false; 978770e0e0eSEric Blake int flags = 0; 979b32d7a39SMax Reitz int c, cnt, ret; 980797ac58cSKevin Wolf char *buf = NULL; 981797ac58cSKevin Wolf int64_t offset; 9829b0beaf3SJohn Snow int64_t count; 983797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 9849b0beaf3SJohn Snow int64_t total = 0; 985797ac58cSKevin Wolf int pattern = 0xcd; 986797ac58cSKevin Wolf 987*c6e3f520SKevin Wolf while ((c = getopt(argc, argv, "bcCfnpP:quz")) != -1) { 988797ac58cSKevin Wolf switch (c) { 989797ac58cSKevin Wolf case 'b': 990dc38852aSEric Blake bflag = true; 991797ac58cSKevin Wolf break; 992797ac58cSKevin Wolf case 'c': 993dc38852aSEric Blake cflag = true; 994797ac58cSKevin Wolf break; 995797ac58cSKevin Wolf case 'C': 996dc38852aSEric Blake Cflag = true; 997797ac58cSKevin Wolf break; 998770e0e0eSEric Blake case 'f': 999770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1000770e0e0eSEric Blake break; 1001*c6e3f520SKevin Wolf case 'n': 1002*c6e3f520SKevin Wolf flags |= BDRV_REQ_NO_FALLBACK; 1003*c6e3f520SKevin Wolf break; 1004797ac58cSKevin Wolf case 'p': 1005093ea232SEric Blake /* Ignored for backwards compatibility */ 1006797ac58cSKevin Wolf break; 1007797ac58cSKevin Wolf case 'P': 1008dc38852aSEric Blake Pflag = true; 1009797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1010797ac58cSKevin Wolf if (pattern < 0) { 1011b32d7a39SMax Reitz return -EINVAL; 1012797ac58cSKevin Wolf } 1013797ac58cSKevin Wolf break; 1014797ac58cSKevin Wolf case 'q': 1015dc38852aSEric Blake qflag = true; 1016797ac58cSKevin Wolf break; 1017c2e001ccSEric Blake case 'u': 1018c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1019c2e001ccSEric Blake break; 1020797ac58cSKevin Wolf case 'z': 1021dc38852aSEric Blake zflag = true; 1022797ac58cSKevin Wolf break; 1023797ac58cSKevin Wolf default: 1024b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1025b32d7a39SMax Reitz return -EINVAL; 1026797ac58cSKevin Wolf } 1027797ac58cSKevin Wolf } 1028797ac58cSKevin Wolf 1029797ac58cSKevin Wolf if (optind != argc - 2) { 1030b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1031b32d7a39SMax Reitz return -EINVAL; 1032797ac58cSKevin Wolf } 1033797ac58cSKevin Wolf 1034093ea232SEric Blake if (bflag && zflag) { 1035093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1036b32d7a39SMax Reitz return -EINVAL; 1037797ac58cSKevin Wolf } 1038797ac58cSKevin Wolf 1039770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1040770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1041b32d7a39SMax Reitz return -EINVAL; 1042770e0e0eSEric Blake } 1043770e0e0eSEric Blake 1044*c6e3f520SKevin Wolf if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { 1045*c6e3f520SKevin Wolf printf("-n requires -z to be specified\n"); 1046*c6e3f520SKevin Wolf return -EINVAL; 1047*c6e3f520SKevin Wolf } 1048*c6e3f520SKevin Wolf 1049c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1050c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1051b32d7a39SMax Reitz return -EINVAL; 1052c2e001ccSEric Blake } 1053c2e001ccSEric Blake 1054797ac58cSKevin Wolf if (zflag && Pflag) { 1055797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 1056b32d7a39SMax Reitz return -EINVAL; 1057797ac58cSKevin Wolf } 1058797ac58cSKevin Wolf 1059797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1060797ac58cSKevin Wolf if (offset < 0) { 1061a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1062b32d7a39SMax Reitz return offset; 1063797ac58cSKevin Wolf } 1064797ac58cSKevin Wolf 1065797ac58cSKevin Wolf optind++; 1066797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1067797ac58cSKevin Wolf if (count < 0) { 1068a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1069b32d7a39SMax Reitz return count; 10703026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 10719b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 10723026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1073b32d7a39SMax Reitz return -EINVAL; 1074797ac58cSKevin Wolf } 1075797ac58cSKevin Wolf 1076093ea232SEric Blake if (bflag || cflag) { 10771bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 10781bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1079797ac58cSKevin Wolf offset); 1080b32d7a39SMax Reitz return -EINVAL; 1081797ac58cSKevin Wolf } 1082797ac58cSKevin Wolf 10831bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 10841bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1085797ac58cSKevin Wolf count); 1086b32d7a39SMax Reitz return -EINVAL; 1087797ac58cSKevin Wolf } 1088797ac58cSKevin Wolf } 1089797ac58cSKevin Wolf 1090797ac58cSKevin Wolf if (!zflag) { 10914c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1092797ac58cSKevin Wolf } 1093797ac58cSKevin Wolf 1094797ac58cSKevin Wolf gettimeofday(&t1, NULL); 10957b3f9712SEric Blake if (bflag) { 1096b32d7a39SMax Reitz ret = do_save_vmstate(blk, buf, offset, count, &total); 1097797ac58cSKevin Wolf } else if (zflag) { 1098b32d7a39SMax Reitz ret = do_co_pwrite_zeroes(blk, offset, count, flags, &total); 1099797ac58cSKevin Wolf } else if (cflag) { 1100b32d7a39SMax Reitz ret = do_write_compressed(blk, buf, offset, count, &total); 1101797ac58cSKevin Wolf } else { 1102b32d7a39SMax Reitz ret = do_pwrite(blk, buf, offset, count, flags, &total); 1103797ac58cSKevin Wolf } 1104797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1105797ac58cSKevin Wolf 1106b32d7a39SMax Reitz if (ret < 0) { 1107b32d7a39SMax Reitz printf("write failed: %s\n", strerror(-ret)); 1108797ac58cSKevin Wolf goto out; 1109797ac58cSKevin Wolf } 1110b32d7a39SMax Reitz cnt = ret; 1111b32d7a39SMax Reitz 1112b32d7a39SMax Reitz ret = 0; 1113797ac58cSKevin Wolf 1114797ac58cSKevin Wolf if (qflag) { 1115797ac58cSKevin Wolf goto out; 1116797ac58cSKevin Wolf } 1117797ac58cSKevin Wolf 1118797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1119797ac58cSKevin Wolf t2 = tsub(t2, t1); 1120797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1121797ac58cSKevin Wolf 1122797ac58cSKevin Wolf out: 1123797ac58cSKevin Wolf if (!zflag) { 1124797ac58cSKevin Wolf qemu_io_free(buf); 1125797ac58cSKevin Wolf } 1126b32d7a39SMax Reitz return ret; 1127797ac58cSKevin Wolf } 1128797ac58cSKevin Wolf 1129797ac58cSKevin Wolf static void 1130797ac58cSKevin Wolf writev_help(void) 1131797ac58cSKevin Wolf { 1132797ac58cSKevin Wolf printf( 1133797ac58cSKevin Wolf "\n" 1134797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1135797ac58cSKevin Wolf "\n" 1136797ac58cSKevin Wolf " Example:\n" 11376e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1138797ac58cSKevin Wolf "\n" 1139797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1140797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1141797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1142797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1143770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1144797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1145797ac58cSKevin Wolf "\n"); 1146797ac58cSKevin Wolf } 1147797ac58cSKevin Wolf 1148b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1149797ac58cSKevin Wolf 1150797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1151797ac58cSKevin Wolf .name = "writev", 1152797ac58cSKevin Wolf .cfunc = writev_f, 1153887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1154797ac58cSKevin Wolf .argmin = 2, 1155797ac58cSKevin Wolf .argmax = -1, 1156770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1157797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1158797ac58cSKevin Wolf .help = writev_help, 1159797ac58cSKevin Wolf }; 1160797ac58cSKevin Wolf 1161b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1162797ac58cSKevin Wolf { 1163797ac58cSKevin Wolf struct timeval t1, t2; 1164dc38852aSEric Blake bool Cflag = false, qflag = false; 1165770e0e0eSEric Blake int flags = 0; 1166b32d7a39SMax Reitz int c, cnt, ret; 1167797ac58cSKevin Wolf char *buf; 1168797ac58cSKevin Wolf int64_t offset; 1169797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1170797ac58cSKevin Wolf int total = 0; 1171797ac58cSKevin Wolf int nr_iov; 1172797ac58cSKevin Wolf int pattern = 0xcd; 1173797ac58cSKevin Wolf QEMUIOVector qiov; 1174797ac58cSKevin Wolf 11754ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1176797ac58cSKevin Wolf switch (c) { 1177797ac58cSKevin Wolf case 'C': 1178dc38852aSEric Blake Cflag = true; 1179797ac58cSKevin Wolf break; 1180770e0e0eSEric Blake case 'f': 1181770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1182770e0e0eSEric Blake break; 1183797ac58cSKevin Wolf case 'q': 1184dc38852aSEric Blake qflag = true; 1185797ac58cSKevin Wolf break; 1186797ac58cSKevin Wolf case 'P': 1187797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1188797ac58cSKevin Wolf if (pattern < 0) { 1189b32d7a39SMax Reitz return -EINVAL; 1190797ac58cSKevin Wolf } 1191797ac58cSKevin Wolf break; 1192797ac58cSKevin Wolf default: 1193b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1194b32d7a39SMax Reitz return -EINVAL; 1195797ac58cSKevin Wolf } 1196797ac58cSKevin Wolf } 1197797ac58cSKevin Wolf 1198797ac58cSKevin Wolf if (optind > argc - 2) { 1199b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1200b32d7a39SMax Reitz return -EINVAL; 1201797ac58cSKevin Wolf } 1202797ac58cSKevin Wolf 1203797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1204797ac58cSKevin Wolf if (offset < 0) { 1205a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1206b32d7a39SMax Reitz return offset; 1207797ac58cSKevin Wolf } 1208797ac58cSKevin Wolf optind++; 1209797ac58cSKevin Wolf 1210797ac58cSKevin Wolf nr_iov = argc - optind; 12114c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1212797ac58cSKevin Wolf if (buf == NULL) { 1213b32d7a39SMax Reitz return -EINVAL; 1214797ac58cSKevin Wolf } 1215797ac58cSKevin Wolf 1216797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1217b32d7a39SMax Reitz ret = do_aio_writev(blk, &qiov, offset, flags, &total); 1218797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1219797ac58cSKevin Wolf 1220b32d7a39SMax Reitz if (ret < 0) { 1221b32d7a39SMax Reitz printf("writev failed: %s\n", strerror(-ret)); 1222797ac58cSKevin Wolf goto out; 1223797ac58cSKevin Wolf } 1224b32d7a39SMax Reitz cnt = ret; 1225b32d7a39SMax Reitz 1226b32d7a39SMax Reitz ret = 0; 1227797ac58cSKevin Wolf 1228797ac58cSKevin Wolf if (qflag) { 1229797ac58cSKevin Wolf goto out; 1230797ac58cSKevin Wolf } 1231797ac58cSKevin Wolf 1232797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1233797ac58cSKevin Wolf t2 = tsub(t2, t1); 1234797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1235797ac58cSKevin Wolf out: 1236797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1237797ac58cSKevin Wolf qemu_io_free(buf); 1238b32d7a39SMax Reitz return ret; 1239797ac58cSKevin Wolf } 1240797ac58cSKevin Wolf 1241797ac58cSKevin Wolf struct aio_ctx { 12424c7b7e9bSMax Reitz BlockBackend *blk; 1243797ac58cSKevin Wolf QEMUIOVector qiov; 1244797ac58cSKevin Wolf int64_t offset; 1245797ac58cSKevin Wolf char *buf; 1246dc38852aSEric Blake bool qflag; 1247dc38852aSEric Blake bool vflag; 1248dc38852aSEric Blake bool Cflag; 1249dc38852aSEric Blake bool Pflag; 1250dc38852aSEric Blake bool zflag; 1251a91f9584SFam Zheng BlockAcctCookie acct; 1252797ac58cSKevin Wolf int pattern; 1253797ac58cSKevin Wolf struct timeval t1; 1254797ac58cSKevin Wolf }; 1255797ac58cSKevin Wolf 1256797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1257797ac58cSKevin Wolf { 1258797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1259797ac58cSKevin Wolf struct timeval t2; 1260797ac58cSKevin Wolf 1261797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1262797ac58cSKevin Wolf 1263797ac58cSKevin Wolf 1264797ac58cSKevin Wolf if (ret < 0) { 1265797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1266556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1267797ac58cSKevin Wolf goto out; 1268797ac58cSKevin Wolf } 1269797ac58cSKevin Wolf 12704c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1271a91f9584SFam Zheng 1272797ac58cSKevin Wolf if (ctx->qflag) { 1273797ac58cSKevin Wolf goto out; 1274797ac58cSKevin Wolf } 1275797ac58cSKevin Wolf 1276797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1277797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1278797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1279797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1280797ac58cSKevin Wolf out: 12815ceb7765SKevin Wolf if (!ctx->zflag) { 1282797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1283797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 12845ceb7765SKevin Wolf } 1285797ac58cSKevin Wolf g_free(ctx); 1286797ac58cSKevin Wolf } 1287797ac58cSKevin Wolf 1288797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1289797ac58cSKevin Wolf { 1290797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1291797ac58cSKevin Wolf struct timeval t2; 1292797ac58cSKevin Wolf 1293797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1294797ac58cSKevin Wolf 1295797ac58cSKevin Wolf if (ret < 0) { 1296797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1297556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1298797ac58cSKevin Wolf goto out; 1299797ac58cSKevin Wolf } 1300797ac58cSKevin Wolf 1301797ac58cSKevin Wolf if (ctx->Pflag) { 1302797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1303797ac58cSKevin Wolf 1304797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1305797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1306797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1307cf67b692SStefan Weil PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); 1308797ac58cSKevin Wolf } 1309797ac58cSKevin Wolf g_free(cmp_buf); 1310797ac58cSKevin Wolf } 1311797ac58cSKevin Wolf 13124c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1313a91f9584SFam Zheng 1314797ac58cSKevin Wolf if (ctx->qflag) { 1315797ac58cSKevin Wolf goto out; 1316797ac58cSKevin Wolf } 1317797ac58cSKevin Wolf 1318797ac58cSKevin Wolf if (ctx->vflag) { 1319797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1320797ac58cSKevin Wolf } 1321797ac58cSKevin Wolf 1322797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1323797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1324797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1325797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1326797ac58cSKevin Wolf out: 1327797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1328797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1329797ac58cSKevin Wolf g_free(ctx); 1330797ac58cSKevin Wolf } 1331797ac58cSKevin Wolf 1332797ac58cSKevin Wolf static void aio_read_help(void) 1333797ac58cSKevin Wolf { 1334797ac58cSKevin Wolf printf( 1335797ac58cSKevin Wolf "\n" 1336797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1337797ac58cSKevin Wolf "\n" 1338797ac58cSKevin Wolf " Example:\n" 1339797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1340797ac58cSKevin Wolf "\n" 1341797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1342797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1343797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1344797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1345b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1346b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1347b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1348797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1349797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 135037546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1351797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1352797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1353797ac58cSKevin Wolf "\n"); 1354797ac58cSKevin Wolf } 1355797ac58cSKevin Wolf 1356b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1357797ac58cSKevin Wolf 1358797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1359797ac58cSKevin Wolf .name = "aio_read", 1360797ac58cSKevin Wolf .cfunc = aio_read_f, 1361797ac58cSKevin Wolf .argmin = 2, 1362797ac58cSKevin Wolf .argmax = -1, 136337546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1364797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1365797ac58cSKevin Wolf .help = aio_read_help, 1366797ac58cSKevin Wolf }; 1367797ac58cSKevin Wolf 1368b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1369797ac58cSKevin Wolf { 1370797ac58cSKevin Wolf int nr_iov, c; 1371797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1372797ac58cSKevin Wolf 13734c7b7e9bSMax Reitz ctx->blk = blk; 137437546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1375797ac58cSKevin Wolf switch (c) { 1376797ac58cSKevin Wolf case 'C': 1377dc38852aSEric Blake ctx->Cflag = true; 1378797ac58cSKevin Wolf break; 1379797ac58cSKevin Wolf case 'P': 1380dc38852aSEric Blake ctx->Pflag = true; 1381797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1382797ac58cSKevin Wolf if (ctx->pattern < 0) { 1383797ac58cSKevin Wolf g_free(ctx); 1384b32d7a39SMax Reitz return -EINVAL; 1385797ac58cSKevin Wolf } 1386797ac58cSKevin Wolf break; 138737546ff2SEric Blake case 'i': 138837546ff2SEric Blake printf("injecting invalid read request\n"); 138937546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 139037546ff2SEric Blake g_free(ctx); 1391b32d7a39SMax Reitz return 0; 1392797ac58cSKevin Wolf case 'q': 1393dc38852aSEric Blake ctx->qflag = true; 1394797ac58cSKevin Wolf break; 1395797ac58cSKevin Wolf case 'v': 1396dc38852aSEric Blake ctx->vflag = true; 1397797ac58cSKevin Wolf break; 1398797ac58cSKevin Wolf default: 1399797ac58cSKevin Wolf g_free(ctx); 1400b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1401b32d7a39SMax Reitz return -EINVAL; 1402797ac58cSKevin Wolf } 1403797ac58cSKevin Wolf } 1404797ac58cSKevin Wolf 1405797ac58cSKevin Wolf if (optind > argc - 2) { 1406797ac58cSKevin Wolf g_free(ctx); 1407b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1408b32d7a39SMax Reitz return -EINVAL; 1409797ac58cSKevin Wolf } 1410797ac58cSKevin Wolf 1411797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1412797ac58cSKevin Wolf if (ctx->offset < 0) { 1413b32d7a39SMax Reitz int ret = ctx->offset; 1414b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1415797ac58cSKevin Wolf g_free(ctx); 1416b32d7a39SMax Reitz return ret; 1417797ac58cSKevin Wolf } 1418797ac58cSKevin Wolf optind++; 1419797ac58cSKevin Wolf 1420797ac58cSKevin Wolf nr_iov = argc - optind; 14214c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1422797ac58cSKevin Wolf if (ctx->buf == NULL) { 1423556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1424797ac58cSKevin Wolf g_free(ctx); 1425b32d7a39SMax Reitz return -EINVAL; 1426797ac58cSKevin Wolf } 1427797ac58cSKevin Wolf 1428797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 14294c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14304c7b7e9bSMax Reitz BLOCK_ACCT_READ); 14317b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1432b32d7a39SMax Reitz return 0; 1433797ac58cSKevin Wolf } 1434797ac58cSKevin Wolf 1435797ac58cSKevin Wolf static void aio_write_help(void) 1436797ac58cSKevin Wolf { 1437797ac58cSKevin Wolf printf( 1438797ac58cSKevin Wolf "\n" 1439797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1440797ac58cSKevin Wolf " from multiple buffers\n" 1441797ac58cSKevin Wolf "\n" 1442797ac58cSKevin Wolf " Example:\n" 1443797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1444797ac58cSKevin Wolf "\n" 1445797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1446797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1447797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1448797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1449b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1450b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1451b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1452797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1453797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1454770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 145537546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1456797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1457c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1458d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1459797ac58cSKevin Wolf "\n"); 1460797ac58cSKevin Wolf } 1461797ac58cSKevin Wolf 1462b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1463797ac58cSKevin Wolf 1464797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1465797ac58cSKevin Wolf .name = "aio_write", 1466797ac58cSKevin Wolf .cfunc = aio_write_f, 1467887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1468797ac58cSKevin Wolf .argmin = 2, 1469797ac58cSKevin Wolf .argmax = -1, 147037546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1471797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1472797ac58cSKevin Wolf .help = aio_write_help, 1473797ac58cSKevin Wolf }; 1474797ac58cSKevin Wolf 1475b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1476797ac58cSKevin Wolf { 1477797ac58cSKevin Wolf int nr_iov, c; 1478797ac58cSKevin Wolf int pattern = 0xcd; 1479797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1480770e0e0eSEric Blake int flags = 0; 1481797ac58cSKevin Wolf 14824c7b7e9bSMax Reitz ctx->blk = blk; 148337546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1484797ac58cSKevin Wolf switch (c) { 1485797ac58cSKevin Wolf case 'C': 1486dc38852aSEric Blake ctx->Cflag = true; 1487797ac58cSKevin Wolf break; 1488770e0e0eSEric Blake case 'f': 1489770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1490770e0e0eSEric Blake break; 1491797ac58cSKevin Wolf case 'q': 1492dc38852aSEric Blake ctx->qflag = true; 1493797ac58cSKevin Wolf break; 1494c2e001ccSEric Blake case 'u': 1495c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1496c2e001ccSEric Blake break; 1497797ac58cSKevin Wolf case 'P': 1498797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1499797ac58cSKevin Wolf if (pattern < 0) { 1500797ac58cSKevin Wolf g_free(ctx); 1501b32d7a39SMax Reitz return -EINVAL; 1502797ac58cSKevin Wolf } 1503797ac58cSKevin Wolf break; 150437546ff2SEric Blake case 'i': 150537546ff2SEric Blake printf("injecting invalid write request\n"); 150637546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 150737546ff2SEric Blake g_free(ctx); 1508b32d7a39SMax Reitz return 0; 15095ceb7765SKevin Wolf case 'z': 1510dc38852aSEric Blake ctx->zflag = true; 15115ceb7765SKevin Wolf break; 1512797ac58cSKevin Wolf default: 1513797ac58cSKevin Wolf g_free(ctx); 1514b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1515b32d7a39SMax Reitz return -EINVAL; 1516797ac58cSKevin Wolf } 1517797ac58cSKevin Wolf } 1518797ac58cSKevin Wolf 1519797ac58cSKevin Wolf if (optind > argc - 2) { 1520797ac58cSKevin Wolf g_free(ctx); 1521b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1522b32d7a39SMax Reitz return -EINVAL; 1523797ac58cSKevin Wolf } 1524797ac58cSKevin Wolf 15255ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 15265ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 15275ceb7765SKevin Wolf g_free(ctx); 1528b32d7a39SMax Reitz return -EINVAL; 15295ceb7765SKevin Wolf } 15305ceb7765SKevin Wolf 1531c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1532c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 15334ca1d340SEric Blake g_free(ctx); 1534b32d7a39SMax Reitz return -EINVAL; 1535c2e001ccSEric Blake } 1536c2e001ccSEric Blake 15375ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 15385ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 15395ceb7765SKevin Wolf g_free(ctx); 1540b32d7a39SMax Reitz return -EINVAL; 15415ceb7765SKevin Wolf } 15425ceb7765SKevin Wolf 1543797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1544797ac58cSKevin Wolf if (ctx->offset < 0) { 1545b32d7a39SMax Reitz int ret = ctx->offset; 1546b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1547797ac58cSKevin Wolf g_free(ctx); 1548b32d7a39SMax Reitz return ret; 1549797ac58cSKevin Wolf } 1550797ac58cSKevin Wolf optind++; 1551797ac58cSKevin Wolf 15525ceb7765SKevin Wolf if (ctx->zflag) { 15535ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 15545ceb7765SKevin Wolf if (count < 0) { 15555ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 15560e01b76eSKevin Wolf g_free(ctx); 1557b32d7a39SMax Reitz return count; 15585ceb7765SKevin Wolf } 15595ceb7765SKevin Wolf 15605ceb7765SKevin Wolf ctx->qiov.size = count; 1561d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1562770e0e0eSEric Blake ctx); 15635ceb7765SKevin Wolf } else { 1564797ac58cSKevin Wolf nr_iov = argc - optind; 15655ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 15665ceb7765SKevin Wolf pattern); 1567797ac58cSKevin Wolf if (ctx->buf == NULL) { 1568556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1569797ac58cSKevin Wolf g_free(ctx); 1570b32d7a39SMax Reitz return -EINVAL; 1571797ac58cSKevin Wolf } 1572797ac58cSKevin Wolf 1573797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 15744c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15754c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 15765ceb7765SKevin Wolf 1577770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1578770e0e0eSEric Blake ctx); 15795ceb7765SKevin Wolf } 1580b32d7a39SMax Reitz 1581b32d7a39SMax Reitz return 0; 1582797ac58cSKevin Wolf } 1583797ac58cSKevin Wolf 1584b32d7a39SMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1585797ac58cSKevin Wolf { 1586556c2b60SAlberto Garcia BlockAcctCookie cookie; 1587556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 15884c7b7e9bSMax Reitz blk_drain_all(); 1589556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1590b32d7a39SMax Reitz return 0; 1591797ac58cSKevin Wolf } 1592797ac58cSKevin Wolf 1593797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1594797ac58cSKevin Wolf .name = "aio_flush", 1595797ac58cSKevin Wolf .cfunc = aio_flush_f, 1596797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1597797ac58cSKevin Wolf }; 1598797ac58cSKevin Wolf 1599b32d7a39SMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1600797ac58cSKevin Wolf { 1601b32d7a39SMax Reitz return blk_flush(blk); 1602797ac58cSKevin Wolf } 1603797ac58cSKevin Wolf 1604797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1605797ac58cSKevin Wolf .name = "flush", 1606797ac58cSKevin Wolf .altname = "f", 1607797ac58cSKevin Wolf .cfunc = flush_f, 1608797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1609797ac58cSKevin Wolf }; 1610797ac58cSKevin Wolf 1611b32d7a39SMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1612797ac58cSKevin Wolf { 1613ed3d2ec9SMax Reitz Error *local_err = NULL; 1614797ac58cSKevin Wolf int64_t offset; 1615797ac58cSKevin Wolf int ret; 1616797ac58cSKevin Wolf 1617797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1618797ac58cSKevin Wolf if (offset < 0) { 1619a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1620b32d7a39SMax Reitz return offset; 1621797ac58cSKevin Wolf } 1622797ac58cSKevin Wolf 16233a691c50SMax Reitz ret = blk_truncate(blk, offset, PREALLOC_MODE_OFF, &local_err); 1624797ac58cSKevin Wolf if (ret < 0) { 1625ed3d2ec9SMax Reitz error_report_err(local_err); 1626b32d7a39SMax Reitz return ret; 1627797ac58cSKevin Wolf } 1628b32d7a39SMax Reitz 1629b32d7a39SMax Reitz return 0; 1630797ac58cSKevin Wolf } 1631797ac58cSKevin Wolf 1632797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1633797ac58cSKevin Wolf .name = "truncate", 1634797ac58cSKevin Wolf .altname = "t", 1635797ac58cSKevin Wolf .cfunc = truncate_f, 1636887354bdSKevin Wolf .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 1637797ac58cSKevin Wolf .argmin = 1, 1638797ac58cSKevin Wolf .argmax = 1, 1639797ac58cSKevin Wolf .args = "off", 1640797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1641797ac58cSKevin Wolf }; 1642797ac58cSKevin Wolf 1643b32d7a39SMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1644797ac58cSKevin Wolf { 1645797ac58cSKevin Wolf int64_t size; 1646797ac58cSKevin Wolf char s1[64]; 1647797ac58cSKevin Wolf 16484c7b7e9bSMax Reitz size = blk_getlength(blk); 1649797ac58cSKevin Wolf if (size < 0) { 1650797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1651b32d7a39SMax Reitz return size; 1652797ac58cSKevin Wolf } 1653797ac58cSKevin Wolf 1654797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1655797ac58cSKevin Wolf printf("%s\n", s1); 1656b32d7a39SMax Reitz return 0; 1657797ac58cSKevin Wolf } 1658797ac58cSKevin Wolf 1659797ac58cSKevin Wolf 1660797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1661797ac58cSKevin Wolf .name = "length", 1662797ac58cSKevin Wolf .altname = "l", 1663797ac58cSKevin Wolf .cfunc = length_f, 1664797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1665797ac58cSKevin Wolf }; 1666797ac58cSKevin Wolf 1667797ac58cSKevin Wolf 1668b32d7a39SMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1669797ac58cSKevin Wolf { 16704c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1671797ac58cSKevin Wolf BlockDriverInfo bdi; 1672a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 16731bf6e9caSAndrey Shinkevich Error *local_err = NULL; 1674797ac58cSKevin Wolf char s1[64], s2[64]; 1675797ac58cSKevin Wolf int ret; 1676797ac58cSKevin Wolf 1677797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1678797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1679797ac58cSKevin Wolf } 1680797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1681797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1682797ac58cSKevin Wolf } 1683797ac58cSKevin Wolf 1684797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1685797ac58cSKevin Wolf if (ret) { 1686b32d7a39SMax Reitz return ret; 1687797ac58cSKevin Wolf } 1688797ac58cSKevin Wolf 1689797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1690797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1691797ac58cSKevin Wolf 1692797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1693797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1694797ac58cSKevin Wolf 16951bf6e9caSAndrey Shinkevich spec_info = bdrv_get_specific_info(bs, &local_err); 16961bf6e9caSAndrey Shinkevich if (local_err) { 16971bf6e9caSAndrey Shinkevich error_report_err(local_err); 16981bf6e9caSAndrey Shinkevich return -EIO; 16991bf6e9caSAndrey Shinkevich } 1700a8d8ecb7SMax Reitz if (spec_info) { 1701a8d8ecb7SMax Reitz printf("Format specific information:\n"); 1702a8d8ecb7SMax Reitz bdrv_image_info_specific_dump(fprintf, stdout, spec_info); 1703a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1704a8d8ecb7SMax Reitz } 1705b32d7a39SMax Reitz 1706b32d7a39SMax Reitz return 0; 1707797ac58cSKevin Wolf } 1708797ac58cSKevin Wolf 1709797ac58cSKevin Wolf 1710797ac58cSKevin Wolf 1711797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1712797ac58cSKevin Wolf .name = "info", 1713797ac58cSKevin Wolf .altname = "i", 1714797ac58cSKevin Wolf .cfunc = info_f, 1715797ac58cSKevin Wolf .oneline = "prints information about the current file", 1716797ac58cSKevin Wolf }; 1717797ac58cSKevin Wolf 1718797ac58cSKevin Wolf static void discard_help(void) 1719797ac58cSKevin Wolf { 1720797ac58cSKevin Wolf printf( 1721797ac58cSKevin Wolf "\n" 1722797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1723797ac58cSKevin Wolf "\n" 1724797ac58cSKevin Wolf " Example:\n" 1725797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1726797ac58cSKevin Wolf "\n" 1727797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1728797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1729797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1730797ac58cSKevin Wolf "\n"); 1731797ac58cSKevin Wolf } 1732797ac58cSKevin Wolf 1733b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1734797ac58cSKevin Wolf 1735797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1736797ac58cSKevin Wolf .name = "discard", 1737797ac58cSKevin Wolf .altname = "d", 1738797ac58cSKevin Wolf .cfunc = discard_f, 1739887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1740797ac58cSKevin Wolf .argmin = 2, 1741797ac58cSKevin Wolf .argmax = -1, 1742797ac58cSKevin Wolf .args = "[-Cq] off len", 1743797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1744797ac58cSKevin Wolf .help = discard_help, 1745797ac58cSKevin Wolf }; 1746797ac58cSKevin Wolf 1747b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1748797ac58cSKevin Wolf { 1749797ac58cSKevin Wolf struct timeval t1, t2; 1750dc38852aSEric Blake bool Cflag = false, qflag = false; 1751797ac58cSKevin Wolf int c, ret; 1752f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1753797ac58cSKevin Wolf 1754b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1755797ac58cSKevin Wolf switch (c) { 1756797ac58cSKevin Wolf case 'C': 1757dc38852aSEric Blake Cflag = true; 1758797ac58cSKevin Wolf break; 1759797ac58cSKevin Wolf case 'q': 1760dc38852aSEric Blake qflag = true; 1761797ac58cSKevin Wolf break; 1762797ac58cSKevin Wolf default: 1763b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1764b32d7a39SMax Reitz return -EINVAL; 1765797ac58cSKevin Wolf } 1766797ac58cSKevin Wolf } 1767797ac58cSKevin Wolf 1768797ac58cSKevin Wolf if (optind != argc - 2) { 1769b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1770b32d7a39SMax Reitz return -EINVAL; 1771797ac58cSKevin Wolf } 1772797ac58cSKevin Wolf 1773797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1774797ac58cSKevin Wolf if (offset < 0) { 1775a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1776b32d7a39SMax Reitz return offset; 1777797ac58cSKevin Wolf } 1778797ac58cSKevin Wolf 1779797ac58cSKevin Wolf optind++; 1780f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1781f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1782f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1783b32d7a39SMax Reitz return bytes; 1784f5a5ca79SManos Pitsidianakis } else if (bytes >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) { 17859b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 1786a3674679SMax Reitz (uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS, 17879b0beaf3SJohn Snow argv[optind]); 1788b32d7a39SMax Reitz return -EINVAL; 1789797ac58cSKevin Wolf } 1790797ac58cSKevin Wolf 1791797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1792f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 1793797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1794797ac58cSKevin Wolf 1795797ac58cSKevin Wolf if (ret < 0) { 1796797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1797b32d7a39SMax Reitz return ret; 1798797ac58cSKevin Wolf } 1799797ac58cSKevin Wolf 1800797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1801797ac58cSKevin Wolf if (!qflag) { 1802797ac58cSKevin Wolf t2 = tsub(t2, t1); 1803f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1804797ac58cSKevin Wolf } 1805b32d7a39SMax Reitz 1806b32d7a39SMax Reitz return 0; 1807797ac58cSKevin Wolf } 1808797ac58cSKevin Wolf 1809b32d7a39SMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1810797ac58cSKevin Wolf { 18114c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1812d6a644bbSEric Blake int64_t offset, start, remaining, count; 1813797ac58cSKevin Wolf char s1[64]; 1814d6a644bbSEric Blake int ret; 1815d6a644bbSEric Blake int64_t num, sum_alloc; 1816797ac58cSKevin Wolf 1817d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1818797ac58cSKevin Wolf if (offset < 0) { 1819a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1820b32d7a39SMax Reitz return offset; 1821797ac58cSKevin Wolf } 1822797ac58cSKevin Wolf 1823797ac58cSKevin Wolf if (argc == 3) { 18244401fdc7SEric Blake count = cvtnum(argv[2]); 18254401fdc7SEric Blake if (count < 0) { 18264401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1827b32d7a39SMax Reitz return count; 1828797ac58cSKevin Wolf } 1829797ac58cSKevin Wolf } else { 18304401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1831797ac58cSKevin Wolf } 1832797ac58cSKevin Wolf 1833d6a644bbSEric Blake remaining = count; 1834797ac58cSKevin Wolf sum_alloc = 0; 1835797ac58cSKevin Wolf while (remaining) { 1836d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1837d663640cSPaolo Bonzini if (ret < 0) { 1838d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1839b32d7a39SMax Reitz return ret; 1840d663640cSPaolo Bonzini } 1841d6a644bbSEric Blake offset += num; 1842797ac58cSKevin Wolf remaining -= num; 1843797ac58cSKevin Wolf if (ret) { 1844797ac58cSKevin Wolf sum_alloc += num; 1845797ac58cSKevin Wolf } 1846797ac58cSKevin Wolf if (num == 0) { 1847d6a644bbSEric Blake count -= remaining; 1848797ac58cSKevin Wolf remaining = 0; 1849797ac58cSKevin Wolf } 1850797ac58cSKevin Wolf } 1851797ac58cSKevin Wolf 1852d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1853797ac58cSKevin Wolf 18544401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1855d6a644bbSEric Blake sum_alloc, count, s1); 1856b32d7a39SMax Reitz return 0; 1857797ac58cSKevin Wolf } 1858797ac58cSKevin Wolf 1859797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1860797ac58cSKevin Wolf .name = "alloc", 1861797ac58cSKevin Wolf .altname = "a", 1862797ac58cSKevin Wolf .argmin = 1, 1863797ac58cSKevin Wolf .argmax = 2, 1864797ac58cSKevin Wolf .cfunc = alloc_f, 18654401fdc7SEric Blake .args = "offset [count]", 18664401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1867797ac58cSKevin Wolf }; 1868797ac58cSKevin Wolf 1869797ac58cSKevin Wolf 1870d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1871d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1872797ac58cSKevin Wolf { 1873d6a644bbSEric Blake int64_t num; 1874d6a644bbSEric Blake int num_checked; 1875797ac58cSKevin Wolf int ret, firstret; 1876797ac58cSKevin Wolf 1877d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1878d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 1879797ac58cSKevin Wolf if (ret < 0) { 1880797ac58cSKevin Wolf return ret; 1881797ac58cSKevin Wolf } 1882797ac58cSKevin Wolf 1883797ac58cSKevin Wolf firstret = ret; 1884797ac58cSKevin Wolf *pnum = num; 1885797ac58cSKevin Wolf 1886d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1887d6a644bbSEric Blake offset += num; 1888d6a644bbSEric Blake bytes -= num; 1889797ac58cSKevin Wolf 1890d6a644bbSEric Blake num_checked = MIN(bytes, BDRV_REQUEST_MAX_BYTES); 1891d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, num_checked, &num); 18924b25bbc4SMax Reitz if (ret == firstret && num) { 1893797ac58cSKevin Wolf *pnum += num; 1894797ac58cSKevin Wolf } else { 1895797ac58cSKevin Wolf break; 1896797ac58cSKevin Wolf } 1897797ac58cSKevin Wolf } 1898797ac58cSKevin Wolf 1899797ac58cSKevin Wolf return firstret; 1900797ac58cSKevin Wolf } 1901797ac58cSKevin Wolf 1902b32d7a39SMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1903797ac58cSKevin Wolf { 1904d6a644bbSEric Blake int64_t offset, bytes; 19056f3c90afSEric Blake char s1[64], s2[64]; 1906797ac58cSKevin Wolf int64_t num; 1907797ac58cSKevin Wolf int ret; 1908797ac58cSKevin Wolf const char *retstr; 1909797ac58cSKevin Wolf 1910797ac58cSKevin Wolf offset = 0; 1911d6a644bbSEric Blake bytes = blk_getlength(blk); 1912d6a644bbSEric Blake if (bytes < 0) { 1913d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 1914b32d7a39SMax Reitz return bytes; 19154c7b7e9bSMax Reitz } 19164c7b7e9bSMax Reitz 1917d6a644bbSEric Blake while (bytes) { 1918d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 1919797ac58cSKevin Wolf if (ret < 0) { 1920797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1921b32d7a39SMax Reitz return ret; 19224b25bbc4SMax Reitz } else if (!num) { 19234b25bbc4SMax Reitz error_report("Unexpected end of image"); 1924b32d7a39SMax Reitz return -EIO; 1925797ac58cSKevin Wolf } 1926797ac58cSKevin Wolf 1927797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1928d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 1929d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 19306f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 1931d6a644bbSEric Blake s1, num, retstr, s2, offset); 1932797ac58cSKevin Wolf 1933797ac58cSKevin Wolf offset += num; 1934d6a644bbSEric Blake bytes -= num; 1935d6a644bbSEric Blake } 1936b32d7a39SMax Reitz 1937b32d7a39SMax Reitz return 0; 1938797ac58cSKevin Wolf } 1939797ac58cSKevin Wolf 1940797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1941797ac58cSKevin Wolf .name = "map", 1942797ac58cSKevin Wolf .argmin = 0, 1943797ac58cSKevin Wolf .argmax = 0, 1944797ac58cSKevin Wolf .cfunc = map_f, 1945797ac58cSKevin Wolf .args = "", 1946797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1947797ac58cSKevin Wolf }; 1948797ac58cSKevin Wolf 19495bbd2e59SKevin Wolf static void reopen_help(void) 19505bbd2e59SKevin Wolf { 19515bbd2e59SKevin Wolf printf( 19525bbd2e59SKevin Wolf "\n" 19535bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 19545bbd2e59SKevin Wolf "\n" 19555bbd2e59SKevin Wolf " Example:\n" 19565bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 19575bbd2e59SKevin Wolf "\n" 19585bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 1959ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 19605bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 19615bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 19625bbd2e59SKevin Wolf "\n"); 19635bbd2e59SKevin Wolf } 19645bbd2e59SKevin Wolf 1965b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv); 19665bbd2e59SKevin Wolf 19675bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 19685bbd2e59SKevin Wolf .name = "reopen", 19695bbd2e59SKevin Wolf .merge_lists = true, 19705bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 19715bbd2e59SKevin Wolf .desc = { 19725bbd2e59SKevin Wolf /* no elements => accept any params */ 19735bbd2e59SKevin Wolf { /* end of list */ } 19745bbd2e59SKevin Wolf }, 19755bbd2e59SKevin Wolf }; 19765bbd2e59SKevin Wolf 19775bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 19785bbd2e59SKevin Wolf .name = "reopen", 19795bbd2e59SKevin Wolf .argmin = 0, 19805bbd2e59SKevin Wolf .argmax = -1, 19815bbd2e59SKevin Wolf .cfunc = reopen_f, 1982ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 19835bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 19845bbd2e59SKevin Wolf .help = reopen_help, 19855bbd2e59SKevin Wolf }; 19865bbd2e59SKevin Wolf 1987b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv) 19885bbd2e59SKevin Wolf { 19895bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 19905bbd2e59SKevin Wolf QemuOpts *qopts; 19915bbd2e59SKevin Wolf QDict *opts; 19925bbd2e59SKevin Wolf int c; 19935bbd2e59SKevin Wolf int flags = bs->open_flags; 199419dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 1995ea92203cSKevin Wolf bool has_rw_option = false; 1996dc900c35SAlberto Garcia bool has_cache_option = false; 19975bbd2e59SKevin Wolf 19985bbd2e59SKevin Wolf BlockReopenQueue *brq; 19995bbd2e59SKevin Wolf Error *local_err = NULL; 20005bbd2e59SKevin Wolf 2001ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 20025bbd2e59SKevin Wolf switch (c) { 20035bbd2e59SKevin Wolf case 'c': 200419dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 20055bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2006b32d7a39SMax Reitz return -EINVAL; 20075bbd2e59SKevin Wolf } 2008dc900c35SAlberto Garcia has_cache_option = true; 20095bbd2e59SKevin Wolf break; 20105bbd2e59SKevin Wolf case 'o': 20115bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 20125bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2013b32d7a39SMax Reitz return -EINVAL; 20145bbd2e59SKevin Wolf } 20155bbd2e59SKevin Wolf break; 20165bbd2e59SKevin Wolf case 'r': 2017ea92203cSKevin Wolf if (has_rw_option) { 2018ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2019b32d7a39SMax Reitz return -EINVAL; 2020ea92203cSKevin Wolf } 20215bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2022ea92203cSKevin Wolf has_rw_option = true; 2023ea92203cSKevin Wolf break; 2024ea92203cSKevin Wolf case 'w': 2025ea92203cSKevin Wolf if (has_rw_option) { 2026ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2027b32d7a39SMax Reitz return -EINVAL; 2028ea92203cSKevin Wolf } 2029ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 2030ea92203cSKevin Wolf has_rw_option = true; 20315bbd2e59SKevin Wolf break; 20325bbd2e59SKevin Wolf default: 20335bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2034b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2035b32d7a39SMax Reitz return -EINVAL; 20365bbd2e59SKevin Wolf } 20375bbd2e59SKevin Wolf } 20385bbd2e59SKevin Wolf 20395bbd2e59SKevin Wolf if (optind != argc) { 20405bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2041b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2042b32d7a39SMax Reitz return -EINVAL; 20435bbd2e59SKevin Wolf } 20445bbd2e59SKevin Wolf 2045a8003ec4SAlberto Garcia if (!writethrough != blk_enable_write_cache(blk) && 204619dbecdcSKevin Wolf blk_get_attached_dev(blk)) 204719dbecdcSKevin Wolf { 204819dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 204919dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 2050b32d7a39SMax Reitz return -EBUSY; 205119dbecdcSKevin Wolf } 205219dbecdcSKevin Wolf 2053f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2054f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2055f3adefb2SKevin Wolf 2056f3adefb2SKevin Wolf bdrv_drain(bs); 2057f3adefb2SKevin Wolf 2058f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2059f3adefb2SKevin Wolf blk_set_perm(blk, 2060f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2061f3adefb2SKevin Wolf orig_shared_perm, 2062f3adefb2SKevin Wolf &error_abort); 2063f3adefb2SKevin Wolf } 2064f3adefb2SKevin Wolf 20655bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2066dc900c35SAlberto Garcia opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); 20675bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 20685bbd2e59SKevin Wolf 2069dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { 2070dc900c35SAlberto Garcia if (has_rw_option) { 2071dc900c35SAlberto Garcia error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); 2072dc900c35SAlberto Garcia qobject_unref(opts); 2073dc900c35SAlberto Garcia return -EINVAL; 2074dc900c35SAlberto Garcia } 2075dc900c35SAlberto Garcia } else { 2076dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); 2077dc900c35SAlberto Garcia } 2078dc900c35SAlberto Garcia 2079dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || 2080dc900c35SAlberto Garcia qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { 2081dc900c35SAlberto Garcia if (has_cache_option) { 2082dc900c35SAlberto Garcia error_report("Cannot set both -c and the cache options"); 2083dc900c35SAlberto Garcia qobject_unref(opts); 2084dc900c35SAlberto Garcia return -EINVAL; 2085dc900c35SAlberto Garcia } 2086dc900c35SAlberto Garcia } else { 2087dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); 2088dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); 2089dc900c35SAlberto Garcia } 2090dc900c35SAlberto Garcia 20911a63a907SKevin Wolf bdrv_subtree_drained_begin(bs); 2092077e8e20SAlberto Garcia brq = bdrv_reopen_queue(NULL, bs, opts, true); 20935019aeceSAlberto Garcia bdrv_reopen_multiple(brq, &local_err); 20941a63a907SKevin Wolf bdrv_subtree_drained_end(bs); 20951a63a907SKevin Wolf 20965bbd2e59SKevin Wolf if (local_err) { 20975bbd2e59SKevin Wolf error_report_err(local_err); 2098b32d7a39SMax Reitz return -EINVAL; 20995bbd2e59SKevin Wolf } 21005bbd2e59SKevin Wolf 2101b32d7a39SMax Reitz blk_set_enable_write_cache(blk, !writethrough); 2102b32d7a39SMax Reitz return 0; 2103b32d7a39SMax Reitz } 2104b32d7a39SMax Reitz 2105b32d7a39SMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2106797ac58cSKevin Wolf { 2107797ac58cSKevin Wolf int ret; 2108797ac58cSKevin Wolf 21094c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2110797ac58cSKevin Wolf if (ret < 0) { 2111797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2112b32d7a39SMax Reitz return ret; 2113797ac58cSKevin Wolf } 2114797ac58cSKevin Wolf 2115b32d7a39SMax Reitz return 0; 2116b32d7a39SMax Reitz } 2117b32d7a39SMax Reitz 2118b32d7a39SMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 21194cc70e93SFam Zheng { 21204cc70e93SFam Zheng int ret; 21214cc70e93SFam Zheng 21224c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 21234cc70e93SFam Zheng if (ret < 0) { 21244cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 2125b32d7a39SMax Reitz return ret; 21264cc70e93SFam Zheng } 2127b32d7a39SMax Reitz 2128b32d7a39SMax Reitz return 0; 21294cc70e93SFam Zheng } 21304cc70e93SFam Zheng 2131797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2132797ac58cSKevin Wolf .name = "break", 2133797ac58cSKevin Wolf .argmin = 2, 2134797ac58cSKevin Wolf .argmax = 2, 2135797ac58cSKevin Wolf .cfunc = break_f, 2136797ac58cSKevin Wolf .args = "event tag", 2137797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2138797ac58cSKevin Wolf "request as tag", 2139797ac58cSKevin Wolf }; 2140797ac58cSKevin Wolf 21414cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 21424cc70e93SFam Zheng .name = "remove_break", 21434cc70e93SFam Zheng .argmin = 1, 21444cc70e93SFam Zheng .argmax = 1, 21454cc70e93SFam Zheng .cfunc = remove_break_f, 21464cc70e93SFam Zheng .args = "tag", 21474cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 21484cc70e93SFam Zheng }; 21494cc70e93SFam Zheng 2150b32d7a39SMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2151797ac58cSKevin Wolf { 2152797ac58cSKevin Wolf int ret; 2153797ac58cSKevin Wolf 21544c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2155797ac58cSKevin Wolf if (ret < 0) { 2156797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2157b32d7a39SMax Reitz return ret; 2158797ac58cSKevin Wolf } 2159b32d7a39SMax Reitz 2160b32d7a39SMax Reitz return 0; 2161797ac58cSKevin Wolf } 2162797ac58cSKevin Wolf 2163797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2164797ac58cSKevin Wolf .name = "resume", 2165797ac58cSKevin Wolf .argmin = 1, 2166797ac58cSKevin Wolf .argmax = 1, 2167797ac58cSKevin Wolf .cfunc = resume_f, 2168797ac58cSKevin Wolf .args = "tag", 2169797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2170797ac58cSKevin Wolf }; 2171797ac58cSKevin Wolf 2172b32d7a39SMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2173797ac58cSKevin Wolf { 21744c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 21754c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2176797ac58cSKevin Wolf } 2177b32d7a39SMax Reitz return 0; 2178797ac58cSKevin Wolf } 2179797ac58cSKevin Wolf 2180797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2181797ac58cSKevin Wolf .name = "wait_break", 2182797ac58cSKevin Wolf .argmin = 1, 2183797ac58cSKevin Wolf .argmax = 1, 2184797ac58cSKevin Wolf .cfunc = wait_break_f, 2185797ac58cSKevin Wolf .args = "tag", 2186797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2187797ac58cSKevin Wolf }; 2188797ac58cSKevin Wolf 2189b32d7a39SMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2190797ac58cSKevin Wolf { 2191797ac58cSKevin Wolf abort(); 2192797ac58cSKevin Wolf } 2193797ac58cSKevin Wolf 2194797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2195797ac58cSKevin Wolf .name = "abort", 2196797ac58cSKevin Wolf .cfunc = abort_f, 2197797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2198797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2199797ac58cSKevin Wolf }; 2200797ac58cSKevin Wolf 22010e82dc7bSMax Reitz static void sigraise_help(void) 22020e82dc7bSMax Reitz { 22030e82dc7bSMax Reitz printf( 22040e82dc7bSMax Reitz "\n" 22050e82dc7bSMax Reitz " raises the given signal\n" 22060e82dc7bSMax Reitz "\n" 22070e82dc7bSMax Reitz " Example:\n" 22080e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 22090e82dc7bSMax Reitz "\n" 22100e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 22110e82dc7bSMax Reitz " given to sigraise.\n" 22120e82dc7bSMax Reitz "\n", SIGTERM); 22130e82dc7bSMax Reitz } 22140e82dc7bSMax Reitz 2215b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 22160e82dc7bSMax Reitz 22170e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 22180e82dc7bSMax Reitz .name = "sigraise", 22190e82dc7bSMax Reitz .cfunc = sigraise_f, 22200e82dc7bSMax Reitz .argmin = 1, 22210e82dc7bSMax Reitz .argmax = 1, 22220e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 22230e82dc7bSMax Reitz .args = "signal", 22240e82dc7bSMax Reitz .oneline = "raises a signal", 22250e82dc7bSMax Reitz .help = sigraise_help, 22260e82dc7bSMax Reitz }; 22270e82dc7bSMax Reitz 2228b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 22290e82dc7bSMax Reitz { 22309b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 22310e82dc7bSMax Reitz if (sig < 0) { 2232a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2233b32d7a39SMax Reitz return sig; 22349b0beaf3SJohn Snow } else if (sig > NSIG) { 22359b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 22369b0beaf3SJohn Snow argv[1]); 2237b32d7a39SMax Reitz return -EINVAL; 22380e82dc7bSMax Reitz } 22390e82dc7bSMax Reitz 22400e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 22410e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 22420e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 22430e82dc7bSMax Reitz fflush(stdout); 22440e82dc7bSMax Reitz fflush(stderr); 22450e82dc7bSMax Reitz 22460e82dc7bSMax Reitz raise(sig); 2247b32d7a39SMax Reitz 2248b32d7a39SMax Reitz return 0; 22490e82dc7bSMax Reitz } 22500e82dc7bSMax Reitz 2251cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2252cd33d02aSKevin Wolf { 2253cd33d02aSKevin Wolf bool *expired = opaque; 2254cd33d02aSKevin Wolf *expired = true; 2255cd33d02aSKevin Wolf } 2256cd33d02aSKevin Wolf 2257b32d7a39SMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2258cd33d02aSKevin Wolf { 2259cd33d02aSKevin Wolf char *endptr; 2260cd33d02aSKevin Wolf long ms; 2261cd33d02aSKevin Wolf struct QEMUTimer *timer; 2262cd33d02aSKevin Wolf bool expired = false; 2263cd33d02aSKevin Wolf 2264cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2265cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2266cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2267b32d7a39SMax Reitz return -EINVAL; 2268cd33d02aSKevin Wolf } 2269cd33d02aSKevin Wolf 2270cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2271cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2272cd33d02aSKevin Wolf 2273cd33d02aSKevin Wolf while (!expired) { 2274cd33d02aSKevin Wolf main_loop_wait(false); 2275cd33d02aSKevin Wolf } 2276cd33d02aSKevin Wolf 2277cd33d02aSKevin Wolf timer_free(timer); 2278b32d7a39SMax Reitz return 0; 2279cd33d02aSKevin Wolf } 2280cd33d02aSKevin Wolf 2281cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2282cd33d02aSKevin Wolf .name = "sleep", 2283cd33d02aSKevin Wolf .argmin = 1, 2284cd33d02aSKevin Wolf .argmax = 1, 2285cd33d02aSKevin Wolf .cfunc = sleep_f, 2286cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2287cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2288cd33d02aSKevin Wolf }; 2289cd33d02aSKevin Wolf 2290f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2291f18a834aSKevin Wolf { 2292f18a834aSKevin Wolf if (cmd) { 2293f18a834aSKevin Wolf printf("%s ", cmd); 2294f18a834aSKevin Wolf } else { 2295f18a834aSKevin Wolf printf("%s ", ct->name); 2296f18a834aSKevin Wolf if (ct->altname) { 2297f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2298f18a834aSKevin Wolf } 2299f18a834aSKevin Wolf } 2300f18a834aSKevin Wolf 2301f18a834aSKevin Wolf if (ct->args) { 2302f18a834aSKevin Wolf printf("%s ", ct->args); 2303f18a834aSKevin Wolf } 2304f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2305f18a834aSKevin Wolf } 2306f18a834aSKevin Wolf 2307f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2308f18a834aSKevin Wolf { 2309f18a834aSKevin Wolf help_oneline(cmd, ct); 2310f18a834aSKevin Wolf if (ct->help) { 2311f18a834aSKevin Wolf ct->help(); 2312f18a834aSKevin Wolf } 2313f18a834aSKevin Wolf } 2314f18a834aSKevin Wolf 2315f18a834aSKevin Wolf static void help_all(void) 2316f18a834aSKevin Wolf { 2317f18a834aSKevin Wolf const cmdinfo_t *ct; 2318f18a834aSKevin Wolf 2319f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2320f18a834aSKevin Wolf help_oneline(ct->name, ct); 2321f18a834aSKevin Wolf } 2322f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2323f18a834aSKevin Wolf } 2324f18a834aSKevin Wolf 2325b32d7a39SMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2326f18a834aSKevin Wolf { 2327f18a834aSKevin Wolf const cmdinfo_t *ct; 2328f18a834aSKevin Wolf 2329f18a834aSKevin Wolf if (argc == 1) { 2330f18a834aSKevin Wolf help_all(); 2331b32d7a39SMax Reitz return 0; 2332f18a834aSKevin Wolf } 2333f18a834aSKevin Wolf 2334f18a834aSKevin Wolf ct = find_command(argv[1]); 2335f18a834aSKevin Wolf if (ct == NULL) { 2336f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2337b32d7a39SMax Reitz return -EINVAL; 2338f18a834aSKevin Wolf } 2339f18a834aSKevin Wolf 2340f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2341b32d7a39SMax Reitz return 0; 2342f18a834aSKevin Wolf } 2343f18a834aSKevin Wolf 2344f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2345f18a834aSKevin Wolf .name = "help", 2346f18a834aSKevin Wolf .altname = "?", 2347f18a834aSKevin Wolf .cfunc = help_f, 2348f18a834aSKevin Wolf .argmin = 0, 2349f18a834aSKevin Wolf .argmax = 1, 2350f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2351f18a834aSKevin Wolf .args = "[command]", 2352f18a834aSKevin Wolf .oneline = "help for one or all commands", 2353f18a834aSKevin Wolf }; 2354f18a834aSKevin Wolf 2355b32d7a39SMax Reitz int qemuio_command(BlockBackend *blk, const char *cmd) 2356dd583296SKevin Wolf { 235715afd94aSPaolo Bonzini AioContext *ctx; 2358dd583296SKevin Wolf char *input; 2359dd583296SKevin Wolf const cmdinfo_t *ct; 2360dd583296SKevin Wolf char **v; 2361dd583296SKevin Wolf int c; 2362b32d7a39SMax Reitz int ret = 0; 2363dd583296SKevin Wolf 2364dd583296SKevin Wolf input = g_strdup(cmd); 2365dd583296SKevin Wolf v = breakline(input, &c); 2366dd583296SKevin Wolf if (c) { 2367dd583296SKevin Wolf ct = find_command(v[0]); 2368dd583296SKevin Wolf if (ct) { 236915afd94aSPaolo Bonzini ctx = blk ? blk_get_aio_context(blk) : qemu_get_aio_context(); 237015afd94aSPaolo Bonzini aio_context_acquire(ctx); 2371b32d7a39SMax Reitz ret = command(blk, ct, c, v); 237215afd94aSPaolo Bonzini aio_context_release(ctx); 2373dd583296SKevin Wolf } else { 2374dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2375b32d7a39SMax Reitz ret = -EINVAL; 2376dd583296SKevin Wolf } 2377dd583296SKevin Wolf } 2378dd583296SKevin Wolf g_free(input); 2379dd583296SKevin Wolf g_free(v); 2380b32d7a39SMax Reitz 2381b32d7a39SMax Reitz return ret; 2382dd583296SKevin Wolf } 2383dd583296SKevin Wolf 2384797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2385797ac58cSKevin Wolf { 2386797ac58cSKevin Wolf /* initialize commands */ 2387c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2388c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2389c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2390c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2391c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2392c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2393c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2394c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2395c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2396c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2397c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2398c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2399c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2400c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2401c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 24025bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2403c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 24044cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2405c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2406c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2407c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2408cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 24090e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2410797ac58cSKevin Wolf } 2411