1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4797ac58cSKevin Wolf * Copyright (C) 2009 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 11797ac58cSKevin Wolf #include "qemu-common.h" 12797ac58cSKevin Wolf #include "block/block_int.h" 13797ac58cSKevin Wolf #include "cmd.h" 14797ac58cSKevin Wolf 15797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 16797ac58cSKevin Wolf 17797ac58cSKevin Wolf int qemuio_misalign; 18797ac58cSKevin Wolf 19c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 20c2cdf5c5SKevin Wolf static int ncmds; 21c2cdf5c5SKevin Wolf 22c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 23c2cdf5c5SKevin Wolf { 24c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 25c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 26c2cdf5c5SKevin Wolf } 27c2cdf5c5SKevin Wolf 28c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 29c2cdf5c5SKevin Wolf { 30c2cdf5c5SKevin Wolf cmdtab = g_realloc(cmdtab, ++ncmds * sizeof(*cmdtab)); 31c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 32c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 33c2cdf5c5SKevin Wolf } 34c2cdf5c5SKevin Wolf 35c2cdf5c5SKevin Wolf int qemuio_command_usage(const cmdinfo_t *ci) 36c2cdf5c5SKevin Wolf { 37c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 38c2cdf5c5SKevin Wolf return 0; 39c2cdf5c5SKevin Wolf } 40c2cdf5c5SKevin Wolf 41c2cdf5c5SKevin Wolf static int init_check_command(BlockDriverState *bs, const cmdinfo_t *ct) 42c2cdf5c5SKevin Wolf { 43c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 44c2cdf5c5SKevin Wolf return 1; 45c2cdf5c5SKevin Wolf } 46c2cdf5c5SKevin Wolf if (!(ct->flags & CMD_NOFILE_OK) && !bs) { 47c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 48c2cdf5c5SKevin Wolf return 0; 49c2cdf5c5SKevin Wolf } 50c2cdf5c5SKevin Wolf return 1; 51c2cdf5c5SKevin Wolf } 52c2cdf5c5SKevin Wolf 53c2cdf5c5SKevin Wolf static int command(const cmdinfo_t *ct, int argc, char **argv) 54c2cdf5c5SKevin Wolf { 55c2cdf5c5SKevin Wolf char *cmd = argv[0]; 56c2cdf5c5SKevin Wolf 57c2cdf5c5SKevin Wolf if (!init_check_command(qemuio_bs, ct)) { 58c2cdf5c5SKevin Wolf return 0; 59c2cdf5c5SKevin Wolf } 60c2cdf5c5SKevin Wolf 61c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 62c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 63c2cdf5c5SKevin Wolf fprintf(stderr, 64c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 65c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 66c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 67c2cdf5c5SKevin Wolf fprintf(stderr, 68c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 69c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 70c2cdf5c5SKevin Wolf } else { 71c2cdf5c5SKevin Wolf fprintf(stderr, 72c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 73c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 74c2cdf5c5SKevin Wolf } 75c2cdf5c5SKevin Wolf return 0; 76c2cdf5c5SKevin Wolf } 77c2cdf5c5SKevin Wolf optind = 0; 78c2cdf5c5SKevin Wolf return ct->cfunc(qemuio_bs, argc, argv); 79c2cdf5c5SKevin Wolf } 80c2cdf5c5SKevin Wolf 81c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 82c2cdf5c5SKevin Wolf { 83c2cdf5c5SKevin Wolf cmdinfo_t *ct; 84c2cdf5c5SKevin Wolf 85c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 86c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 87c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 88c2cdf5c5SKevin Wolf { 89c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 90c2cdf5c5SKevin Wolf } 91c2cdf5c5SKevin Wolf } 92c2cdf5c5SKevin Wolf return NULL; 93c2cdf5c5SKevin Wolf } 94c2cdf5c5SKevin Wolf 95c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 96c2cdf5c5SKevin Wolf { 97c2cdf5c5SKevin Wolf int c = 0; 98c2cdf5c5SKevin Wolf char *p; 99c2cdf5c5SKevin Wolf char **rval = g_malloc0(sizeof(char *)); 100c2cdf5c5SKevin Wolf char **tmp; 101c2cdf5c5SKevin Wolf 102c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 103c2cdf5c5SKevin Wolf if (!*p) { 104c2cdf5c5SKevin Wolf continue; 105c2cdf5c5SKevin Wolf } 106c2cdf5c5SKevin Wolf c++; 107c2cdf5c5SKevin Wolf tmp = g_realloc(rval, sizeof(*rval) * (c + 1)); 108c2cdf5c5SKevin Wolf if (!tmp) { 109c2cdf5c5SKevin Wolf g_free(rval); 110c2cdf5c5SKevin Wolf rval = NULL; 111c2cdf5c5SKevin Wolf c = 0; 112c2cdf5c5SKevin Wolf break; 113c2cdf5c5SKevin Wolf } else { 114c2cdf5c5SKevin Wolf rval = tmp; 115c2cdf5c5SKevin Wolf } 116c2cdf5c5SKevin Wolf rval[c - 1] = p; 117c2cdf5c5SKevin Wolf rval[c] = NULL; 118c2cdf5c5SKevin Wolf } 119c2cdf5c5SKevin Wolf *count = c; 120c2cdf5c5SKevin Wolf return rval; 121c2cdf5c5SKevin Wolf } 122c2cdf5c5SKevin Wolf 123797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 124797ac58cSKevin Wolf { 125797ac58cSKevin Wolf char *end; 126797ac58cSKevin Wolf return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B); 127797ac58cSKevin Wolf } 128797ac58cSKevin Wolf 129*0b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 130*0b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 131*0b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 132*0b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 133*0b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 134*0b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 135*0b613881SKevin Wolf 136*0b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 137*0b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 138*0b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 139*0b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 140*0b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 141*0b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 142*0b613881SKevin Wolf 143*0b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 144*0b613881SKevin Wolf { 145*0b613881SKevin Wolf char *trim; 146*0b613881SKevin Wolf const char *suffix; 147*0b613881SKevin Wolf 148*0b613881SKevin Wolf if (value >= EXABYTES(1)) { 149*0b613881SKevin Wolf suffix = " EiB"; 150*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 151*0b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 152*0b613881SKevin Wolf suffix = " PiB"; 153*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 154*0b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 155*0b613881SKevin Wolf suffix = " TiB"; 156*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 157*0b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 158*0b613881SKevin Wolf suffix = " GiB"; 159*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 160*0b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 161*0b613881SKevin Wolf suffix = " MiB"; 162*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 163*0b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 164*0b613881SKevin Wolf suffix = " KiB"; 165*0b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 166*0b613881SKevin Wolf } else { 167*0b613881SKevin Wolf suffix = " bytes"; 168*0b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 169*0b613881SKevin Wolf } 170*0b613881SKevin Wolf 171*0b613881SKevin Wolf trim = strstr(str, ".000"); 172*0b613881SKevin Wolf if (trim) { 173*0b613881SKevin Wolf strcpy(trim, suffix); 174*0b613881SKevin Wolf } else { 175*0b613881SKevin Wolf strcat(str, suffix); 176*0b613881SKevin Wolf } 177*0b613881SKevin Wolf } 178*0b613881SKevin Wolf 179*0b613881SKevin Wolf 180*0b613881SKevin Wolf 181*0b613881SKevin Wolf static struct timeval tsub(struct timeval t1, struct timeval t2) 182*0b613881SKevin Wolf { 183*0b613881SKevin Wolf t1.tv_usec -= t2.tv_usec; 184*0b613881SKevin Wolf if (t1.tv_usec < 0) { 185*0b613881SKevin Wolf t1.tv_usec += 1000000; 186*0b613881SKevin Wolf t1.tv_sec--; 187*0b613881SKevin Wolf } 188*0b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 189*0b613881SKevin Wolf return t1; 190*0b613881SKevin Wolf } 191*0b613881SKevin Wolf 192*0b613881SKevin Wolf static double tdiv(double value, struct timeval tv) 193*0b613881SKevin Wolf { 194*0b613881SKevin Wolf return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); 195*0b613881SKevin Wolf } 196*0b613881SKevin Wolf 197*0b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 198*0b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 199*0b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 200*0b613881SKevin Wolf 201*0b613881SKevin Wolf enum { 202*0b613881SKevin Wolf DEFAULT_TIME = 0x0, 203*0b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 204*0b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 205*0b613881SKevin Wolf }; 206*0b613881SKevin Wolf 207*0b613881SKevin Wolf static void timestr(struct timeval *tv, char *ts, size_t size, int format) 208*0b613881SKevin Wolf { 209*0b613881SKevin Wolf double usec = (double)tv->tv_usec / 1000000.0; 210*0b613881SKevin Wolf 211*0b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 212*0b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 213*0b613881SKevin Wolf snprintf(ts, size, "%u:%02u.%02u", 214*0b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 215*0b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 216*0b613881SKevin Wolf (unsigned int) (usec * 100)); 217*0b613881SKevin Wolf return; 218*0b613881SKevin Wolf } 219*0b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 220*0b613881SKevin Wolf } 221*0b613881SKevin Wolf 222*0b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 223*0b613881SKevin Wolf snprintf(ts, size, "%u:%02u:%02u.%02u", 224*0b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 225*0b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 226*0b613881SKevin Wolf (unsigned int) SECONDS(tv->tv_sec), 227*0b613881SKevin Wolf (unsigned int) (usec * 100)); 228*0b613881SKevin Wolf } else { 229*0b613881SKevin Wolf snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000)); 230*0b613881SKevin Wolf } 231*0b613881SKevin Wolf } 232*0b613881SKevin Wolf 233797ac58cSKevin Wolf /* 234797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 235797ac58cSKevin Wolf * 236797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 237797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 238797ac58cSKevin Wolf */ 239797ac58cSKevin Wolf static int parse_pattern(const char *arg) 240797ac58cSKevin Wolf { 241797ac58cSKevin Wolf char *endptr = NULL; 242797ac58cSKevin Wolf long pattern; 243797ac58cSKevin Wolf 244797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 245797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 246797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 247797ac58cSKevin Wolf return -1; 248797ac58cSKevin Wolf } 249797ac58cSKevin Wolf 250797ac58cSKevin Wolf return pattern; 251797ac58cSKevin Wolf } 252797ac58cSKevin Wolf 253797ac58cSKevin Wolf /* 254797ac58cSKevin Wolf * Memory allocation helpers. 255797ac58cSKevin Wolf * 256797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 257797ac58cSKevin Wolf * that is specified on the command line. 258797ac58cSKevin Wolf */ 259797ac58cSKevin Wolf 260797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 261797ac58cSKevin Wolf static void *qemu_io_alloc(BlockDriverState *bs, size_t len, int pattern) 262797ac58cSKevin Wolf { 263797ac58cSKevin Wolf void *buf; 264797ac58cSKevin Wolf 265797ac58cSKevin Wolf if (qemuio_misalign) { 266797ac58cSKevin Wolf len += MISALIGN_OFFSET; 267797ac58cSKevin Wolf } 268797ac58cSKevin Wolf buf = qemu_blockalign(bs, len); 269797ac58cSKevin Wolf memset(buf, pattern, len); 270797ac58cSKevin Wolf if (qemuio_misalign) { 271797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 272797ac58cSKevin Wolf } 273797ac58cSKevin Wolf return buf; 274797ac58cSKevin Wolf } 275797ac58cSKevin Wolf 276797ac58cSKevin Wolf static void qemu_io_free(void *p) 277797ac58cSKevin Wolf { 278797ac58cSKevin Wolf if (qemuio_misalign) { 279797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 280797ac58cSKevin Wolf } 281797ac58cSKevin Wolf qemu_vfree(p); 282797ac58cSKevin Wolf } 283797ac58cSKevin Wolf 284797ac58cSKevin Wolf static void dump_buffer(const void *buffer, int64_t offset, int len) 285797ac58cSKevin Wolf { 286797ac58cSKevin Wolf int i, j; 287797ac58cSKevin Wolf const uint8_t *p; 288797ac58cSKevin Wolf 289797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 290797ac58cSKevin Wolf const uint8_t *s = p; 291797ac58cSKevin Wolf 292797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 293797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 294797ac58cSKevin Wolf printf("%02x ", *p); 295797ac58cSKevin Wolf } 296797ac58cSKevin Wolf printf(" "); 297797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 298797ac58cSKevin Wolf if (isalnum(*s)) { 299797ac58cSKevin Wolf printf("%c", *s); 300797ac58cSKevin Wolf } else { 301797ac58cSKevin Wolf printf("."); 302797ac58cSKevin Wolf } 303797ac58cSKevin Wolf } 304797ac58cSKevin Wolf printf("\n"); 305797ac58cSKevin Wolf } 306797ac58cSKevin Wolf } 307797ac58cSKevin Wolf 308797ac58cSKevin Wolf static void print_report(const char *op, struct timeval *t, int64_t offset, 309797ac58cSKevin Wolf int count, int total, int cnt, int Cflag) 310797ac58cSKevin Wolf { 311797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 312797ac58cSKevin Wolf 313797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 314797ac58cSKevin Wolf if (!Cflag) { 315797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 316797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 317797ac58cSKevin Wolf printf("%s %d/%d bytes at offset %" PRId64 "\n", 318797ac58cSKevin Wolf op, total, count, offset); 319797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 320797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 321797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 322797ac58cSKevin Wolf printf("%d,%d,%s,%.3f,%.3f\n", 323797ac58cSKevin Wolf total, cnt, ts, 324797ac58cSKevin Wolf tdiv((double)total, *t), 325797ac58cSKevin Wolf tdiv((double)cnt, *t)); 326797ac58cSKevin Wolf } 327797ac58cSKevin Wolf } 328797ac58cSKevin Wolf 329797ac58cSKevin Wolf /* 330797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 331797ac58cSKevin Wolf * vector matching it. 332797ac58cSKevin Wolf */ 333797ac58cSKevin Wolf static void * 334797ac58cSKevin Wolf create_iovec(BlockDriverState *bs, QEMUIOVector *qiov, char **argv, int nr_iov, 335797ac58cSKevin Wolf int pattern) 336797ac58cSKevin Wolf { 337797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 338797ac58cSKevin Wolf size_t count = 0; 339797ac58cSKevin Wolf void *buf = NULL; 340797ac58cSKevin Wolf void *p; 341797ac58cSKevin Wolf int i; 342797ac58cSKevin Wolf 343797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 344797ac58cSKevin Wolf char *arg = argv[i]; 345797ac58cSKevin Wolf int64_t len; 346797ac58cSKevin Wolf 347797ac58cSKevin Wolf len = cvtnum(arg); 348797ac58cSKevin Wolf if (len < 0) { 349797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", arg); 350797ac58cSKevin Wolf goto fail; 351797ac58cSKevin Wolf } 352797ac58cSKevin Wolf 353797ac58cSKevin Wolf /* should be SIZE_T_MAX, but that doesn't exist */ 354797ac58cSKevin Wolf if (len > INT_MAX) { 355797ac58cSKevin Wolf printf("too large length argument -- %s\n", arg); 356797ac58cSKevin Wolf goto fail; 357797ac58cSKevin Wolf } 358797ac58cSKevin Wolf 359797ac58cSKevin Wolf if (len & 0x1ff) { 360797ac58cSKevin Wolf printf("length argument %" PRId64 361797ac58cSKevin Wolf " is not sector aligned\n", len); 362797ac58cSKevin Wolf goto fail; 363797ac58cSKevin Wolf } 364797ac58cSKevin Wolf 365797ac58cSKevin Wolf sizes[i] = len; 366797ac58cSKevin Wolf count += len; 367797ac58cSKevin Wolf } 368797ac58cSKevin Wolf 369797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 370797ac58cSKevin Wolf 371797ac58cSKevin Wolf buf = p = qemu_io_alloc(bs, count, pattern); 372797ac58cSKevin Wolf 373797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 374797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 375797ac58cSKevin Wolf p += sizes[i]; 376797ac58cSKevin Wolf } 377797ac58cSKevin Wolf 378797ac58cSKevin Wolf fail: 379797ac58cSKevin Wolf g_free(sizes); 380797ac58cSKevin Wolf return buf; 381797ac58cSKevin Wolf } 382797ac58cSKevin Wolf 383797ac58cSKevin Wolf static int do_read(BlockDriverState *bs, char *buf, int64_t offset, int count, 384797ac58cSKevin Wolf int *total) 385797ac58cSKevin Wolf { 386797ac58cSKevin Wolf int ret; 387797ac58cSKevin Wolf 388797ac58cSKevin Wolf ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); 389797ac58cSKevin Wolf if (ret < 0) { 390797ac58cSKevin Wolf return ret; 391797ac58cSKevin Wolf } 392797ac58cSKevin Wolf *total = count; 393797ac58cSKevin Wolf return 1; 394797ac58cSKevin Wolf } 395797ac58cSKevin Wolf 396797ac58cSKevin Wolf static int do_write(BlockDriverState *bs, char *buf, int64_t offset, int count, 397797ac58cSKevin Wolf int *total) 398797ac58cSKevin Wolf { 399797ac58cSKevin Wolf int ret; 400797ac58cSKevin Wolf 401797ac58cSKevin Wolf ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); 402797ac58cSKevin Wolf if (ret < 0) { 403797ac58cSKevin Wolf return ret; 404797ac58cSKevin Wolf } 405797ac58cSKevin Wolf *total = count; 406797ac58cSKevin Wolf return 1; 407797ac58cSKevin Wolf } 408797ac58cSKevin Wolf 409797ac58cSKevin Wolf static int do_pread(BlockDriverState *bs, char *buf, int64_t offset, int count, 410797ac58cSKevin Wolf int *total) 411797ac58cSKevin Wolf { 412797ac58cSKevin Wolf *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); 413797ac58cSKevin Wolf if (*total < 0) { 414797ac58cSKevin Wolf return *total; 415797ac58cSKevin Wolf } 416797ac58cSKevin Wolf return 1; 417797ac58cSKevin Wolf } 418797ac58cSKevin Wolf 419797ac58cSKevin Wolf static int do_pwrite(BlockDriverState *bs, char *buf, int64_t offset, int count, 420797ac58cSKevin Wolf int *total) 421797ac58cSKevin Wolf { 422797ac58cSKevin Wolf *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); 423797ac58cSKevin Wolf if (*total < 0) { 424797ac58cSKevin Wolf return *total; 425797ac58cSKevin Wolf } 426797ac58cSKevin Wolf return 1; 427797ac58cSKevin Wolf } 428797ac58cSKevin Wolf 429797ac58cSKevin Wolf typedef struct { 430797ac58cSKevin Wolf BlockDriverState *bs; 431797ac58cSKevin Wolf int64_t offset; 432797ac58cSKevin Wolf int count; 433797ac58cSKevin Wolf int *total; 434797ac58cSKevin Wolf int ret; 435797ac58cSKevin Wolf bool done; 436797ac58cSKevin Wolf } CoWriteZeroes; 437797ac58cSKevin Wolf 438797ac58cSKevin Wolf static void coroutine_fn co_write_zeroes_entry(void *opaque) 439797ac58cSKevin Wolf { 440797ac58cSKevin Wolf CoWriteZeroes *data = opaque; 441797ac58cSKevin Wolf 442797ac58cSKevin Wolf data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, 443797ac58cSKevin Wolf data->count / BDRV_SECTOR_SIZE); 444797ac58cSKevin Wolf data->done = true; 445797ac58cSKevin Wolf if (data->ret < 0) { 446797ac58cSKevin Wolf *data->total = data->ret; 447797ac58cSKevin Wolf return; 448797ac58cSKevin Wolf } 449797ac58cSKevin Wolf 450797ac58cSKevin Wolf *data->total = data->count; 451797ac58cSKevin Wolf } 452797ac58cSKevin Wolf 453797ac58cSKevin Wolf static int do_co_write_zeroes(BlockDriverState *bs, int64_t offset, int count, 454797ac58cSKevin Wolf int *total) 455797ac58cSKevin Wolf { 456797ac58cSKevin Wolf Coroutine *co; 457797ac58cSKevin Wolf CoWriteZeroes data = { 458797ac58cSKevin Wolf .bs = bs, 459797ac58cSKevin Wolf .offset = offset, 460797ac58cSKevin Wolf .count = count, 461797ac58cSKevin Wolf .total = total, 462797ac58cSKevin Wolf .done = false, 463797ac58cSKevin Wolf }; 464797ac58cSKevin Wolf 465797ac58cSKevin Wolf co = qemu_coroutine_create(co_write_zeroes_entry); 466797ac58cSKevin Wolf qemu_coroutine_enter(co, &data); 467797ac58cSKevin Wolf while (!data.done) { 468797ac58cSKevin Wolf qemu_aio_wait(); 469797ac58cSKevin Wolf } 470797ac58cSKevin Wolf if (data.ret < 0) { 471797ac58cSKevin Wolf return data.ret; 472797ac58cSKevin Wolf } else { 473797ac58cSKevin Wolf return 1; 474797ac58cSKevin Wolf } 475797ac58cSKevin Wolf } 476797ac58cSKevin Wolf 477797ac58cSKevin Wolf static int do_write_compressed(BlockDriverState *bs, char *buf, int64_t offset, 478797ac58cSKevin Wolf int count, int *total) 479797ac58cSKevin Wolf { 480797ac58cSKevin Wolf int ret; 481797ac58cSKevin Wolf 482797ac58cSKevin Wolf ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); 483797ac58cSKevin Wolf if (ret < 0) { 484797ac58cSKevin Wolf return ret; 485797ac58cSKevin Wolf } 486797ac58cSKevin Wolf *total = count; 487797ac58cSKevin Wolf return 1; 488797ac58cSKevin Wolf } 489797ac58cSKevin Wolf 490797ac58cSKevin Wolf static int do_load_vmstate(BlockDriverState *bs, char *buf, int64_t offset, 491797ac58cSKevin Wolf int count, int *total) 492797ac58cSKevin Wolf { 493797ac58cSKevin Wolf *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); 494797ac58cSKevin Wolf if (*total < 0) { 495797ac58cSKevin Wolf return *total; 496797ac58cSKevin Wolf } 497797ac58cSKevin Wolf return 1; 498797ac58cSKevin Wolf } 499797ac58cSKevin Wolf 500797ac58cSKevin Wolf static int do_save_vmstate(BlockDriverState *bs, char *buf, int64_t offset, 501797ac58cSKevin Wolf int count, int *total) 502797ac58cSKevin Wolf { 503797ac58cSKevin Wolf *total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); 504797ac58cSKevin Wolf if (*total < 0) { 505797ac58cSKevin Wolf return *total; 506797ac58cSKevin Wolf } 507797ac58cSKevin Wolf return 1; 508797ac58cSKevin Wolf } 509797ac58cSKevin Wolf 510797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 511797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 512797ac58cSKevin Wolf { 513797ac58cSKevin Wolf *(int *)opaque = ret; 514797ac58cSKevin Wolf } 515797ac58cSKevin Wolf 516797ac58cSKevin Wolf static int do_aio_readv(BlockDriverState *bs, QEMUIOVector *qiov, 517797ac58cSKevin Wolf int64_t offset, int *total) 518797ac58cSKevin Wolf { 519797ac58cSKevin Wolf int async_ret = NOT_DONE; 520797ac58cSKevin Wolf 521797ac58cSKevin Wolf bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, 522797ac58cSKevin Wolf aio_rw_done, &async_ret); 523797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 524797ac58cSKevin Wolf main_loop_wait(false); 525797ac58cSKevin Wolf } 526797ac58cSKevin Wolf 527797ac58cSKevin Wolf *total = qiov->size; 528797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 529797ac58cSKevin Wolf } 530797ac58cSKevin Wolf 531797ac58cSKevin Wolf static int do_aio_writev(BlockDriverState *bs, QEMUIOVector *qiov, 532797ac58cSKevin Wolf int64_t offset, int *total) 533797ac58cSKevin Wolf { 534797ac58cSKevin Wolf int async_ret = NOT_DONE; 535797ac58cSKevin Wolf 536797ac58cSKevin Wolf bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, 537797ac58cSKevin Wolf aio_rw_done, &async_ret); 538797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 539797ac58cSKevin Wolf main_loop_wait(false); 540797ac58cSKevin Wolf } 541797ac58cSKevin Wolf 542797ac58cSKevin Wolf *total = qiov->size; 543797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 544797ac58cSKevin Wolf } 545797ac58cSKevin Wolf 546797ac58cSKevin Wolf struct multiwrite_async_ret { 547797ac58cSKevin Wolf int num_done; 548797ac58cSKevin Wolf int error; 549797ac58cSKevin Wolf }; 550797ac58cSKevin Wolf 551797ac58cSKevin Wolf static void multiwrite_cb(void *opaque, int ret) 552797ac58cSKevin Wolf { 553797ac58cSKevin Wolf struct multiwrite_async_ret *async_ret = opaque; 554797ac58cSKevin Wolf 555797ac58cSKevin Wolf async_ret->num_done++; 556797ac58cSKevin Wolf if (ret < 0) { 557797ac58cSKevin Wolf async_ret->error = ret; 558797ac58cSKevin Wolf } 559797ac58cSKevin Wolf } 560797ac58cSKevin Wolf 561797ac58cSKevin Wolf static int do_aio_multiwrite(BlockDriverState *bs, BlockRequest* reqs, 562797ac58cSKevin Wolf int num_reqs, int *total) 563797ac58cSKevin Wolf { 564797ac58cSKevin Wolf int i, ret; 565797ac58cSKevin Wolf struct multiwrite_async_ret async_ret = { 566797ac58cSKevin Wolf .num_done = 0, 567797ac58cSKevin Wolf .error = 0, 568797ac58cSKevin Wolf }; 569797ac58cSKevin Wolf 570797ac58cSKevin Wolf *total = 0; 571797ac58cSKevin Wolf for (i = 0; i < num_reqs; i++) { 572797ac58cSKevin Wolf reqs[i].cb = multiwrite_cb; 573797ac58cSKevin Wolf reqs[i].opaque = &async_ret; 574797ac58cSKevin Wolf *total += reqs[i].qiov->size; 575797ac58cSKevin Wolf } 576797ac58cSKevin Wolf 577797ac58cSKevin Wolf ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); 578797ac58cSKevin Wolf if (ret < 0) { 579797ac58cSKevin Wolf return ret; 580797ac58cSKevin Wolf } 581797ac58cSKevin Wolf 582797ac58cSKevin Wolf while (async_ret.num_done < num_reqs) { 583797ac58cSKevin Wolf main_loop_wait(false); 584797ac58cSKevin Wolf } 585797ac58cSKevin Wolf 586797ac58cSKevin Wolf return async_ret.error < 0 ? async_ret.error : 1; 587797ac58cSKevin Wolf } 588797ac58cSKevin Wolf 589797ac58cSKevin Wolf static void read_help(void) 590797ac58cSKevin Wolf { 591797ac58cSKevin Wolf printf( 592797ac58cSKevin Wolf "\n" 593797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 594797ac58cSKevin Wolf "\n" 595797ac58cSKevin Wolf " Example:\n" 596797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 597797ac58cSKevin Wolf "\n" 598797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 599797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 600797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 601797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 602797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 603797ac58cSKevin Wolf " -p, -- use bdrv_pread to read the file\n" 604797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 605797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 606797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 607797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 608797ac58cSKevin Wolf "\n"); 609797ac58cSKevin Wolf } 610797ac58cSKevin Wolf 611797ac58cSKevin Wolf static int read_f(BlockDriverState *bs, int argc, char **argv); 612797ac58cSKevin Wolf 613797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 614797ac58cSKevin Wolf .name = "read", 615797ac58cSKevin Wolf .altname = "r", 616797ac58cSKevin Wolf .cfunc = read_f, 617797ac58cSKevin Wolf .argmin = 2, 618797ac58cSKevin Wolf .argmax = -1, 619797ac58cSKevin Wolf .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len", 620797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 621797ac58cSKevin Wolf .help = read_help, 622797ac58cSKevin Wolf }; 623797ac58cSKevin Wolf 624797ac58cSKevin Wolf static int read_f(BlockDriverState *bs, int argc, char **argv) 625797ac58cSKevin Wolf { 626797ac58cSKevin Wolf struct timeval t1, t2; 627797ac58cSKevin Wolf int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; 628797ac58cSKevin Wolf int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; 629797ac58cSKevin Wolf int c, cnt; 630797ac58cSKevin Wolf char *buf; 631797ac58cSKevin Wolf int64_t offset; 632797ac58cSKevin Wolf int count; 633797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 634797ac58cSKevin Wolf int total = 0; 635797ac58cSKevin Wolf int pattern = 0, pattern_offset = 0, pattern_count = 0; 636797ac58cSKevin Wolf 637797ac58cSKevin Wolf while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { 638797ac58cSKevin Wolf switch (c) { 639797ac58cSKevin Wolf case 'b': 640797ac58cSKevin Wolf bflag = 1; 641797ac58cSKevin Wolf break; 642797ac58cSKevin Wolf case 'C': 643797ac58cSKevin Wolf Cflag = 1; 644797ac58cSKevin Wolf break; 645797ac58cSKevin Wolf case 'l': 646797ac58cSKevin Wolf lflag = 1; 647797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 648797ac58cSKevin Wolf if (pattern_count < 0) { 649797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", optarg); 650797ac58cSKevin Wolf return 0; 651797ac58cSKevin Wolf } 652797ac58cSKevin Wolf break; 653797ac58cSKevin Wolf case 'p': 654797ac58cSKevin Wolf pflag = 1; 655797ac58cSKevin Wolf break; 656797ac58cSKevin Wolf case 'P': 657797ac58cSKevin Wolf Pflag = 1; 658797ac58cSKevin Wolf pattern = parse_pattern(optarg); 659797ac58cSKevin Wolf if (pattern < 0) { 660797ac58cSKevin Wolf return 0; 661797ac58cSKevin Wolf } 662797ac58cSKevin Wolf break; 663797ac58cSKevin Wolf case 'q': 664797ac58cSKevin Wolf qflag = 1; 665797ac58cSKevin Wolf break; 666797ac58cSKevin Wolf case 's': 667797ac58cSKevin Wolf sflag = 1; 668797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 669797ac58cSKevin Wolf if (pattern_offset < 0) { 670797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", optarg); 671797ac58cSKevin Wolf return 0; 672797ac58cSKevin Wolf } 673797ac58cSKevin Wolf break; 674797ac58cSKevin Wolf case 'v': 675797ac58cSKevin Wolf vflag = 1; 676797ac58cSKevin Wolf break; 677797ac58cSKevin Wolf default: 678c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 679797ac58cSKevin Wolf } 680797ac58cSKevin Wolf } 681797ac58cSKevin Wolf 682797ac58cSKevin Wolf if (optind != argc - 2) { 683c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 684797ac58cSKevin Wolf } 685797ac58cSKevin Wolf 686797ac58cSKevin Wolf if (bflag && pflag) { 687797ac58cSKevin Wolf printf("-b and -p cannot be specified at the same time\n"); 688797ac58cSKevin Wolf return 0; 689797ac58cSKevin Wolf } 690797ac58cSKevin Wolf 691797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 692797ac58cSKevin Wolf if (offset < 0) { 693797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 694797ac58cSKevin Wolf return 0; 695797ac58cSKevin Wolf } 696797ac58cSKevin Wolf 697797ac58cSKevin Wolf optind++; 698797ac58cSKevin Wolf count = cvtnum(argv[optind]); 699797ac58cSKevin Wolf if (count < 0) { 700797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 701797ac58cSKevin Wolf return 0; 702797ac58cSKevin Wolf } 703797ac58cSKevin Wolf 704797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 705c2cdf5c5SKevin Wolf return qemuio_command_usage(&read_cmd); 706797ac58cSKevin Wolf } 707797ac58cSKevin Wolf 708797ac58cSKevin Wolf if (!lflag) { 709797ac58cSKevin Wolf pattern_count = count - pattern_offset; 710797ac58cSKevin Wolf } 711797ac58cSKevin Wolf 712797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 713797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 714797ac58cSKevin Wolf return 0; 715797ac58cSKevin Wolf } 716797ac58cSKevin Wolf 717797ac58cSKevin Wolf if (!pflag) { 718797ac58cSKevin Wolf if (offset & 0x1ff) { 719797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 720797ac58cSKevin Wolf offset); 721797ac58cSKevin Wolf return 0; 722797ac58cSKevin Wolf } 723797ac58cSKevin Wolf if (count & 0x1ff) { 724797ac58cSKevin Wolf printf("count %d is not sector aligned\n", 725797ac58cSKevin Wolf count); 726797ac58cSKevin Wolf return 0; 727797ac58cSKevin Wolf } 728797ac58cSKevin Wolf } 729797ac58cSKevin Wolf 730797ac58cSKevin Wolf buf = qemu_io_alloc(bs, count, 0xab); 731797ac58cSKevin Wolf 732797ac58cSKevin Wolf gettimeofday(&t1, NULL); 733797ac58cSKevin Wolf if (pflag) { 734797ac58cSKevin Wolf cnt = do_pread(bs, buf, offset, count, &total); 735797ac58cSKevin Wolf } else if (bflag) { 736797ac58cSKevin Wolf cnt = do_load_vmstate(bs, buf, offset, count, &total); 737797ac58cSKevin Wolf } else { 738797ac58cSKevin Wolf cnt = do_read(bs, buf, offset, count, &total); 739797ac58cSKevin Wolf } 740797ac58cSKevin Wolf gettimeofday(&t2, NULL); 741797ac58cSKevin Wolf 742797ac58cSKevin Wolf if (cnt < 0) { 743797ac58cSKevin Wolf printf("read failed: %s\n", strerror(-cnt)); 744797ac58cSKevin Wolf goto out; 745797ac58cSKevin Wolf } 746797ac58cSKevin Wolf 747797ac58cSKevin Wolf if (Pflag) { 748797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 749797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 750797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 751797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 752797ac58cSKevin Wolf PRId64 ", %d bytes\n", 753797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 754797ac58cSKevin Wolf } 755797ac58cSKevin Wolf g_free(cmp_buf); 756797ac58cSKevin Wolf } 757797ac58cSKevin Wolf 758797ac58cSKevin Wolf if (qflag) { 759797ac58cSKevin Wolf goto out; 760797ac58cSKevin Wolf } 761797ac58cSKevin Wolf 762797ac58cSKevin Wolf if (vflag) { 763797ac58cSKevin Wolf dump_buffer(buf, offset, count); 764797ac58cSKevin Wolf } 765797ac58cSKevin Wolf 766797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 767797ac58cSKevin Wolf t2 = tsub(t2, t1); 768797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 769797ac58cSKevin Wolf 770797ac58cSKevin Wolf out: 771797ac58cSKevin Wolf qemu_io_free(buf); 772797ac58cSKevin Wolf 773797ac58cSKevin Wolf return 0; 774797ac58cSKevin Wolf } 775797ac58cSKevin Wolf 776797ac58cSKevin Wolf static void readv_help(void) 777797ac58cSKevin Wolf { 778797ac58cSKevin Wolf printf( 779797ac58cSKevin Wolf "\n" 780797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 781797ac58cSKevin Wolf "\n" 782797ac58cSKevin Wolf " Example:\n" 783797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 784797ac58cSKevin Wolf "\n" 785797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 786797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 787797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 788797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 789797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 790797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 791797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 792797ac58cSKevin Wolf "\n"); 793797ac58cSKevin Wolf } 794797ac58cSKevin Wolf 795797ac58cSKevin Wolf static int readv_f(BlockDriverState *bs, int argc, char **argv); 796797ac58cSKevin Wolf 797797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 798797ac58cSKevin Wolf .name = "readv", 799797ac58cSKevin Wolf .cfunc = readv_f, 800797ac58cSKevin Wolf .argmin = 2, 801797ac58cSKevin Wolf .argmax = -1, 802797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern ] off len [len..]", 803797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 804797ac58cSKevin Wolf .help = readv_help, 805797ac58cSKevin Wolf }; 806797ac58cSKevin Wolf 807797ac58cSKevin Wolf static int readv_f(BlockDriverState *bs, int argc, char **argv) 808797ac58cSKevin Wolf { 809797ac58cSKevin Wolf struct timeval t1, t2; 810797ac58cSKevin Wolf int Cflag = 0, qflag = 0, vflag = 0; 811797ac58cSKevin Wolf int c, cnt; 812797ac58cSKevin Wolf char *buf; 813797ac58cSKevin Wolf int64_t offset; 814797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 815797ac58cSKevin Wolf int total = 0; 816797ac58cSKevin Wolf int nr_iov; 817797ac58cSKevin Wolf QEMUIOVector qiov; 818797ac58cSKevin Wolf int pattern = 0; 819797ac58cSKevin Wolf int Pflag = 0; 820797ac58cSKevin Wolf 821797ac58cSKevin Wolf while ((c = getopt(argc, argv, "CP:qv")) != EOF) { 822797ac58cSKevin Wolf switch (c) { 823797ac58cSKevin Wolf case 'C': 824797ac58cSKevin Wolf Cflag = 1; 825797ac58cSKevin Wolf break; 826797ac58cSKevin Wolf case 'P': 827797ac58cSKevin Wolf Pflag = 1; 828797ac58cSKevin Wolf pattern = parse_pattern(optarg); 829797ac58cSKevin Wolf if (pattern < 0) { 830797ac58cSKevin Wolf return 0; 831797ac58cSKevin Wolf } 832797ac58cSKevin Wolf break; 833797ac58cSKevin Wolf case 'q': 834797ac58cSKevin Wolf qflag = 1; 835797ac58cSKevin Wolf break; 836797ac58cSKevin Wolf case 'v': 837797ac58cSKevin Wolf vflag = 1; 838797ac58cSKevin Wolf break; 839797ac58cSKevin Wolf default: 840c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 841797ac58cSKevin Wolf } 842797ac58cSKevin Wolf } 843797ac58cSKevin Wolf 844797ac58cSKevin Wolf if (optind > argc - 2) { 845c2cdf5c5SKevin Wolf return qemuio_command_usage(&readv_cmd); 846797ac58cSKevin Wolf } 847797ac58cSKevin Wolf 848797ac58cSKevin Wolf 849797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 850797ac58cSKevin Wolf if (offset < 0) { 851797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 852797ac58cSKevin Wolf return 0; 853797ac58cSKevin Wolf } 854797ac58cSKevin Wolf optind++; 855797ac58cSKevin Wolf 856797ac58cSKevin Wolf if (offset & 0x1ff) { 857797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 858797ac58cSKevin Wolf offset); 859797ac58cSKevin Wolf return 0; 860797ac58cSKevin Wolf } 861797ac58cSKevin Wolf 862797ac58cSKevin Wolf nr_iov = argc - optind; 863797ac58cSKevin Wolf buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, 0xab); 864797ac58cSKevin Wolf if (buf == NULL) { 865797ac58cSKevin Wolf return 0; 866797ac58cSKevin Wolf } 867797ac58cSKevin Wolf 868797ac58cSKevin Wolf gettimeofday(&t1, NULL); 869797ac58cSKevin Wolf cnt = do_aio_readv(bs, &qiov, offset, &total); 870797ac58cSKevin Wolf gettimeofday(&t2, NULL); 871797ac58cSKevin Wolf 872797ac58cSKevin Wolf if (cnt < 0) { 873797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-cnt)); 874797ac58cSKevin Wolf goto out; 875797ac58cSKevin Wolf } 876797ac58cSKevin Wolf 877797ac58cSKevin Wolf if (Pflag) { 878797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 879797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 880797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 881797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 882797ac58cSKevin Wolf PRId64 ", %zd bytes\n", offset, qiov.size); 883797ac58cSKevin Wolf } 884797ac58cSKevin Wolf g_free(cmp_buf); 885797ac58cSKevin Wolf } 886797ac58cSKevin Wolf 887797ac58cSKevin Wolf if (qflag) { 888797ac58cSKevin Wolf goto out; 889797ac58cSKevin Wolf } 890797ac58cSKevin Wolf 891797ac58cSKevin Wolf if (vflag) { 892797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 893797ac58cSKevin Wolf } 894797ac58cSKevin Wolf 895797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 896797ac58cSKevin Wolf t2 = tsub(t2, t1); 897797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 898797ac58cSKevin Wolf 899797ac58cSKevin Wolf out: 900797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 901797ac58cSKevin Wolf qemu_io_free(buf); 902797ac58cSKevin Wolf return 0; 903797ac58cSKevin Wolf } 904797ac58cSKevin Wolf 905797ac58cSKevin Wolf static void write_help(void) 906797ac58cSKevin Wolf { 907797ac58cSKevin Wolf printf( 908797ac58cSKevin Wolf "\n" 909797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 910797ac58cSKevin Wolf "\n" 911797ac58cSKevin Wolf " Example:\n" 912797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 913797ac58cSKevin Wolf "\n" 914797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 915797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 916797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 917797ac58cSKevin Wolf " -c, -- write compressed data with bdrv_write_compressed\n" 918797ac58cSKevin Wolf " -p, -- use bdrv_pwrite to write the file\n" 919797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 920797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 921797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 922797ac58cSKevin Wolf " -z, -- write zeroes using bdrv_co_write_zeroes\n" 923797ac58cSKevin Wolf "\n"); 924797ac58cSKevin Wolf } 925797ac58cSKevin Wolf 926797ac58cSKevin Wolf static int write_f(BlockDriverState *bs, int argc, char **argv); 927797ac58cSKevin Wolf 928797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 929797ac58cSKevin Wolf .name = "write", 930797ac58cSKevin Wolf .altname = "w", 931797ac58cSKevin Wolf .cfunc = write_f, 932797ac58cSKevin Wolf .argmin = 2, 933797ac58cSKevin Wolf .argmax = -1, 934797ac58cSKevin Wolf .args = "[-bcCpqz] [-P pattern ] off len", 935797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 936797ac58cSKevin Wolf .help = write_help, 937797ac58cSKevin Wolf }; 938797ac58cSKevin Wolf 939797ac58cSKevin Wolf static int write_f(BlockDriverState *bs, int argc, char **argv) 940797ac58cSKevin Wolf { 941797ac58cSKevin Wolf struct timeval t1, t2; 942797ac58cSKevin Wolf int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; 943797ac58cSKevin Wolf int cflag = 0; 944797ac58cSKevin Wolf int c, cnt; 945797ac58cSKevin Wolf char *buf = NULL; 946797ac58cSKevin Wolf int64_t offset; 947797ac58cSKevin Wolf int count; 948797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 949797ac58cSKevin Wolf int total = 0; 950797ac58cSKevin Wolf int pattern = 0xcd; 951797ac58cSKevin Wolf 952797ac58cSKevin Wolf while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { 953797ac58cSKevin Wolf switch (c) { 954797ac58cSKevin Wolf case 'b': 955797ac58cSKevin Wolf bflag = 1; 956797ac58cSKevin Wolf break; 957797ac58cSKevin Wolf case 'c': 958797ac58cSKevin Wolf cflag = 1; 959797ac58cSKevin Wolf break; 960797ac58cSKevin Wolf case 'C': 961797ac58cSKevin Wolf Cflag = 1; 962797ac58cSKevin Wolf break; 963797ac58cSKevin Wolf case 'p': 964797ac58cSKevin Wolf pflag = 1; 965797ac58cSKevin Wolf break; 966797ac58cSKevin Wolf case 'P': 967797ac58cSKevin Wolf Pflag = 1; 968797ac58cSKevin Wolf pattern = parse_pattern(optarg); 969797ac58cSKevin Wolf if (pattern < 0) { 970797ac58cSKevin Wolf return 0; 971797ac58cSKevin Wolf } 972797ac58cSKevin Wolf break; 973797ac58cSKevin Wolf case 'q': 974797ac58cSKevin Wolf qflag = 1; 975797ac58cSKevin Wolf break; 976797ac58cSKevin Wolf case 'z': 977797ac58cSKevin Wolf zflag = 1; 978797ac58cSKevin Wolf break; 979797ac58cSKevin Wolf default: 980c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 981797ac58cSKevin Wolf } 982797ac58cSKevin Wolf } 983797ac58cSKevin Wolf 984797ac58cSKevin Wolf if (optind != argc - 2) { 985c2cdf5c5SKevin Wolf return qemuio_command_usage(&write_cmd); 986797ac58cSKevin Wolf } 987797ac58cSKevin Wolf 988797ac58cSKevin Wolf if (bflag + pflag + zflag > 1) { 989797ac58cSKevin Wolf printf("-b, -p, or -z cannot be specified at the same time\n"); 990797ac58cSKevin Wolf return 0; 991797ac58cSKevin Wolf } 992797ac58cSKevin Wolf 993797ac58cSKevin Wolf if (zflag && Pflag) { 994797ac58cSKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 995797ac58cSKevin Wolf return 0; 996797ac58cSKevin Wolf } 997797ac58cSKevin Wolf 998797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 999797ac58cSKevin Wolf if (offset < 0) { 1000797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1001797ac58cSKevin Wolf return 0; 1002797ac58cSKevin Wolf } 1003797ac58cSKevin Wolf 1004797ac58cSKevin Wolf optind++; 1005797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1006797ac58cSKevin Wolf if (count < 0) { 1007797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1008797ac58cSKevin Wolf return 0; 1009797ac58cSKevin Wolf } 1010797ac58cSKevin Wolf 1011797ac58cSKevin Wolf if (!pflag) { 1012797ac58cSKevin Wolf if (offset & 0x1ff) { 1013797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1014797ac58cSKevin Wolf offset); 1015797ac58cSKevin Wolf return 0; 1016797ac58cSKevin Wolf } 1017797ac58cSKevin Wolf 1018797ac58cSKevin Wolf if (count & 0x1ff) { 1019797ac58cSKevin Wolf printf("count %d is not sector aligned\n", 1020797ac58cSKevin Wolf count); 1021797ac58cSKevin Wolf return 0; 1022797ac58cSKevin Wolf } 1023797ac58cSKevin Wolf } 1024797ac58cSKevin Wolf 1025797ac58cSKevin Wolf if (!zflag) { 1026797ac58cSKevin Wolf buf = qemu_io_alloc(bs, count, pattern); 1027797ac58cSKevin Wolf } 1028797ac58cSKevin Wolf 1029797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1030797ac58cSKevin Wolf if (pflag) { 1031797ac58cSKevin Wolf cnt = do_pwrite(bs, buf, offset, count, &total); 1032797ac58cSKevin Wolf } else if (bflag) { 1033797ac58cSKevin Wolf cnt = do_save_vmstate(bs, buf, offset, count, &total); 1034797ac58cSKevin Wolf } else if (zflag) { 1035797ac58cSKevin Wolf cnt = do_co_write_zeroes(bs, offset, count, &total); 1036797ac58cSKevin Wolf } else if (cflag) { 1037797ac58cSKevin Wolf cnt = do_write_compressed(bs, buf, offset, count, &total); 1038797ac58cSKevin Wolf } else { 1039797ac58cSKevin Wolf cnt = do_write(bs, buf, offset, count, &total); 1040797ac58cSKevin Wolf } 1041797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1042797ac58cSKevin Wolf 1043797ac58cSKevin Wolf if (cnt < 0) { 1044797ac58cSKevin Wolf printf("write failed: %s\n", strerror(-cnt)); 1045797ac58cSKevin Wolf goto out; 1046797ac58cSKevin Wolf } 1047797ac58cSKevin Wolf 1048797ac58cSKevin Wolf if (qflag) { 1049797ac58cSKevin Wolf goto out; 1050797ac58cSKevin Wolf } 1051797ac58cSKevin Wolf 1052797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1053797ac58cSKevin Wolf t2 = tsub(t2, t1); 1054797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1055797ac58cSKevin Wolf 1056797ac58cSKevin Wolf out: 1057797ac58cSKevin Wolf if (!zflag) { 1058797ac58cSKevin Wolf qemu_io_free(buf); 1059797ac58cSKevin Wolf } 1060797ac58cSKevin Wolf 1061797ac58cSKevin Wolf return 0; 1062797ac58cSKevin Wolf } 1063797ac58cSKevin Wolf 1064797ac58cSKevin Wolf static void 1065797ac58cSKevin Wolf writev_help(void) 1066797ac58cSKevin Wolf { 1067797ac58cSKevin Wolf printf( 1068797ac58cSKevin Wolf "\n" 1069797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1070797ac58cSKevin Wolf "\n" 1071797ac58cSKevin Wolf " Example:\n" 1072797ac58cSKevin Wolf " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1073797ac58cSKevin Wolf "\n" 1074797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1075797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1076797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1077797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1078797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1079797ac58cSKevin Wolf "\n"); 1080797ac58cSKevin Wolf } 1081797ac58cSKevin Wolf 1082797ac58cSKevin Wolf static int writev_f(BlockDriverState *bs, int argc, char **argv); 1083797ac58cSKevin Wolf 1084797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1085797ac58cSKevin Wolf .name = "writev", 1086797ac58cSKevin Wolf .cfunc = writev_f, 1087797ac58cSKevin Wolf .argmin = 2, 1088797ac58cSKevin Wolf .argmax = -1, 1089797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..]", 1090797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1091797ac58cSKevin Wolf .help = writev_help, 1092797ac58cSKevin Wolf }; 1093797ac58cSKevin Wolf 1094797ac58cSKevin Wolf static int writev_f(BlockDriverState *bs, int argc, char **argv) 1095797ac58cSKevin Wolf { 1096797ac58cSKevin Wolf struct timeval t1, t2; 1097797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1098797ac58cSKevin Wolf int c, cnt; 1099797ac58cSKevin Wolf char *buf; 1100797ac58cSKevin Wolf int64_t offset; 1101797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1102797ac58cSKevin Wolf int total = 0; 1103797ac58cSKevin Wolf int nr_iov; 1104797ac58cSKevin Wolf int pattern = 0xcd; 1105797ac58cSKevin Wolf QEMUIOVector qiov; 1106797ac58cSKevin Wolf 1107797ac58cSKevin Wolf while ((c = getopt(argc, argv, "CqP:")) != EOF) { 1108797ac58cSKevin Wolf switch (c) { 1109797ac58cSKevin Wolf case 'C': 1110797ac58cSKevin Wolf Cflag = 1; 1111797ac58cSKevin Wolf break; 1112797ac58cSKevin Wolf case 'q': 1113797ac58cSKevin Wolf qflag = 1; 1114797ac58cSKevin Wolf break; 1115797ac58cSKevin Wolf case 'P': 1116797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1117797ac58cSKevin Wolf if (pattern < 0) { 1118797ac58cSKevin Wolf return 0; 1119797ac58cSKevin Wolf } 1120797ac58cSKevin Wolf break; 1121797ac58cSKevin Wolf default: 1122c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1123797ac58cSKevin Wolf } 1124797ac58cSKevin Wolf } 1125797ac58cSKevin Wolf 1126797ac58cSKevin Wolf if (optind > argc - 2) { 1127c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1128797ac58cSKevin Wolf } 1129797ac58cSKevin Wolf 1130797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1131797ac58cSKevin Wolf if (offset < 0) { 1132797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1133797ac58cSKevin Wolf return 0; 1134797ac58cSKevin Wolf } 1135797ac58cSKevin Wolf optind++; 1136797ac58cSKevin Wolf 1137797ac58cSKevin Wolf if (offset & 0x1ff) { 1138797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1139797ac58cSKevin Wolf offset); 1140797ac58cSKevin Wolf return 0; 1141797ac58cSKevin Wolf } 1142797ac58cSKevin Wolf 1143797ac58cSKevin Wolf nr_iov = argc - optind; 1144797ac58cSKevin Wolf buf = create_iovec(bs, &qiov, &argv[optind], nr_iov, pattern); 1145797ac58cSKevin Wolf if (buf == NULL) { 1146797ac58cSKevin Wolf return 0; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf 1149797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1150797ac58cSKevin Wolf cnt = do_aio_writev(bs, &qiov, offset, &total); 1151797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1152797ac58cSKevin Wolf 1153797ac58cSKevin Wolf if (cnt < 0) { 1154797ac58cSKevin Wolf printf("writev failed: %s\n", strerror(-cnt)); 1155797ac58cSKevin Wolf goto out; 1156797ac58cSKevin Wolf } 1157797ac58cSKevin Wolf 1158797ac58cSKevin Wolf if (qflag) { 1159797ac58cSKevin Wolf goto out; 1160797ac58cSKevin Wolf } 1161797ac58cSKevin Wolf 1162797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1163797ac58cSKevin Wolf t2 = tsub(t2, t1); 1164797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1165797ac58cSKevin Wolf out: 1166797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1167797ac58cSKevin Wolf qemu_io_free(buf); 1168797ac58cSKevin Wolf return 0; 1169797ac58cSKevin Wolf } 1170797ac58cSKevin Wolf 1171797ac58cSKevin Wolf static void multiwrite_help(void) 1172797ac58cSKevin Wolf { 1173797ac58cSKevin Wolf printf( 1174797ac58cSKevin Wolf "\n" 1175797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers,\n" 1176797ac58cSKevin Wolf " in a batch of requests that may be merged by qemu\n" 1177797ac58cSKevin Wolf "\n" 1178797ac58cSKevin Wolf " Example:\n" 1179797ac58cSKevin Wolf " 'multiwrite 512 1k 1k ; 4k 1k'\n" 1180797ac58cSKevin Wolf " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n" 1181797ac58cSKevin Wolf "\n" 1182797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1183797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n" 1184797ac58cSKevin Wolf " by one for each request contained in the multiwrite command.\n" 1185797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1186797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1187797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1188797ac58cSKevin Wolf "\n"); 1189797ac58cSKevin Wolf } 1190797ac58cSKevin Wolf 1191797ac58cSKevin Wolf static int multiwrite_f(BlockDriverState *bs, int argc, char **argv); 1192797ac58cSKevin Wolf 1193797ac58cSKevin Wolf static const cmdinfo_t multiwrite_cmd = { 1194797ac58cSKevin Wolf .name = "multiwrite", 1195797ac58cSKevin Wolf .cfunc = multiwrite_f, 1196797ac58cSKevin Wolf .argmin = 2, 1197797ac58cSKevin Wolf .argmax = -1, 1198797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]", 1199797ac58cSKevin Wolf .oneline = "issues multiple write requests at once", 1200797ac58cSKevin Wolf .help = multiwrite_help, 1201797ac58cSKevin Wolf }; 1202797ac58cSKevin Wolf 1203797ac58cSKevin Wolf static int multiwrite_f(BlockDriverState *bs, int argc, char **argv) 1204797ac58cSKevin Wolf { 1205797ac58cSKevin Wolf struct timeval t1, t2; 1206797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1207797ac58cSKevin Wolf int c, cnt; 1208797ac58cSKevin Wolf char **buf; 1209797ac58cSKevin Wolf int64_t offset, first_offset = 0; 1210797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1211797ac58cSKevin Wolf int total = 0; 1212797ac58cSKevin Wolf int nr_iov; 1213797ac58cSKevin Wolf int nr_reqs; 1214797ac58cSKevin Wolf int pattern = 0xcd; 1215797ac58cSKevin Wolf QEMUIOVector *qiovs; 1216797ac58cSKevin Wolf int i; 1217797ac58cSKevin Wolf BlockRequest *reqs; 1218797ac58cSKevin Wolf 1219797ac58cSKevin Wolf while ((c = getopt(argc, argv, "CqP:")) != EOF) { 1220797ac58cSKevin Wolf switch (c) { 1221797ac58cSKevin Wolf case 'C': 1222797ac58cSKevin Wolf Cflag = 1; 1223797ac58cSKevin Wolf break; 1224797ac58cSKevin Wolf case 'q': 1225797ac58cSKevin Wolf qflag = 1; 1226797ac58cSKevin Wolf break; 1227797ac58cSKevin Wolf case 'P': 1228797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1229797ac58cSKevin Wolf if (pattern < 0) { 1230797ac58cSKevin Wolf return 0; 1231797ac58cSKevin Wolf } 1232797ac58cSKevin Wolf break; 1233797ac58cSKevin Wolf default: 1234c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1235797ac58cSKevin Wolf } 1236797ac58cSKevin Wolf } 1237797ac58cSKevin Wolf 1238797ac58cSKevin Wolf if (optind > argc - 2) { 1239c2cdf5c5SKevin Wolf return qemuio_command_usage(&writev_cmd); 1240797ac58cSKevin Wolf } 1241797ac58cSKevin Wolf 1242797ac58cSKevin Wolf nr_reqs = 1; 1243797ac58cSKevin Wolf for (i = optind; i < argc; i++) { 1244797ac58cSKevin Wolf if (!strcmp(argv[i], ";")) { 1245797ac58cSKevin Wolf nr_reqs++; 1246797ac58cSKevin Wolf } 1247797ac58cSKevin Wolf } 1248797ac58cSKevin Wolf 1249797ac58cSKevin Wolf reqs = g_malloc0(nr_reqs * sizeof(*reqs)); 1250797ac58cSKevin Wolf buf = g_malloc0(nr_reqs * sizeof(*buf)); 1251797ac58cSKevin Wolf qiovs = g_malloc(nr_reqs * sizeof(*qiovs)); 1252797ac58cSKevin Wolf 1253797ac58cSKevin Wolf for (i = 0; i < nr_reqs && optind < argc; i++) { 1254797ac58cSKevin Wolf int j; 1255797ac58cSKevin Wolf 1256797ac58cSKevin Wolf /* Read the offset of the request */ 1257797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1258797ac58cSKevin Wolf if (offset < 0) { 1259797ac58cSKevin Wolf printf("non-numeric offset argument -- %s\n", argv[optind]); 1260797ac58cSKevin Wolf goto out; 1261797ac58cSKevin Wolf } 1262797ac58cSKevin Wolf optind++; 1263797ac58cSKevin Wolf 1264797ac58cSKevin Wolf if (offset & 0x1ff) { 1265797ac58cSKevin Wolf printf("offset %lld is not sector aligned\n", 1266797ac58cSKevin Wolf (long long)offset); 1267797ac58cSKevin Wolf goto out; 1268797ac58cSKevin Wolf } 1269797ac58cSKevin Wolf 1270797ac58cSKevin Wolf if (i == 0) { 1271797ac58cSKevin Wolf first_offset = offset; 1272797ac58cSKevin Wolf } 1273797ac58cSKevin Wolf 1274797ac58cSKevin Wolf /* Read lengths for qiov entries */ 1275797ac58cSKevin Wolf for (j = optind; j < argc; j++) { 1276797ac58cSKevin Wolf if (!strcmp(argv[j], ";")) { 1277797ac58cSKevin Wolf break; 1278797ac58cSKevin Wolf } 1279797ac58cSKevin Wolf } 1280797ac58cSKevin Wolf 1281797ac58cSKevin Wolf nr_iov = j - optind; 1282797ac58cSKevin Wolf 1283797ac58cSKevin Wolf /* Build request */ 1284797ac58cSKevin Wolf buf[i] = create_iovec(bs, &qiovs[i], &argv[optind], nr_iov, pattern); 1285797ac58cSKevin Wolf if (buf[i] == NULL) { 1286797ac58cSKevin Wolf goto out; 1287797ac58cSKevin Wolf } 1288797ac58cSKevin Wolf 1289797ac58cSKevin Wolf reqs[i].qiov = &qiovs[i]; 1290797ac58cSKevin Wolf reqs[i].sector = offset >> 9; 1291797ac58cSKevin Wolf reqs[i].nb_sectors = reqs[i].qiov->size >> 9; 1292797ac58cSKevin Wolf 1293797ac58cSKevin Wolf optind = j + 1; 1294797ac58cSKevin Wolf 1295797ac58cSKevin Wolf pattern++; 1296797ac58cSKevin Wolf } 1297797ac58cSKevin Wolf 1298797ac58cSKevin Wolf /* If there were empty requests at the end, ignore them */ 1299797ac58cSKevin Wolf nr_reqs = i; 1300797ac58cSKevin Wolf 1301797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1302797ac58cSKevin Wolf cnt = do_aio_multiwrite(bs, reqs, nr_reqs, &total); 1303797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1304797ac58cSKevin Wolf 1305797ac58cSKevin Wolf if (cnt < 0) { 1306797ac58cSKevin Wolf printf("aio_multiwrite failed: %s\n", strerror(-cnt)); 1307797ac58cSKevin Wolf goto out; 1308797ac58cSKevin Wolf } 1309797ac58cSKevin Wolf 1310797ac58cSKevin Wolf if (qflag) { 1311797ac58cSKevin Wolf goto out; 1312797ac58cSKevin Wolf } 1313797ac58cSKevin Wolf 1314797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1315797ac58cSKevin Wolf t2 = tsub(t2, t1); 1316797ac58cSKevin Wolf print_report("wrote", &t2, first_offset, total, total, cnt, Cflag); 1317797ac58cSKevin Wolf out: 1318797ac58cSKevin Wolf for (i = 0; i < nr_reqs; i++) { 1319797ac58cSKevin Wolf qemu_io_free(buf[i]); 1320797ac58cSKevin Wolf if (reqs[i].qiov != NULL) { 1321797ac58cSKevin Wolf qemu_iovec_destroy(&qiovs[i]); 1322797ac58cSKevin Wolf } 1323797ac58cSKevin Wolf } 1324797ac58cSKevin Wolf g_free(buf); 1325797ac58cSKevin Wolf g_free(reqs); 1326797ac58cSKevin Wolf g_free(qiovs); 1327797ac58cSKevin Wolf return 0; 1328797ac58cSKevin Wolf } 1329797ac58cSKevin Wolf 1330797ac58cSKevin Wolf struct aio_ctx { 1331797ac58cSKevin Wolf QEMUIOVector qiov; 1332797ac58cSKevin Wolf int64_t offset; 1333797ac58cSKevin Wolf char *buf; 1334797ac58cSKevin Wolf int qflag; 1335797ac58cSKevin Wolf int vflag; 1336797ac58cSKevin Wolf int Cflag; 1337797ac58cSKevin Wolf int Pflag; 1338797ac58cSKevin Wolf int pattern; 1339797ac58cSKevin Wolf struct timeval t1; 1340797ac58cSKevin Wolf }; 1341797ac58cSKevin Wolf 1342797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1343797ac58cSKevin Wolf { 1344797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1345797ac58cSKevin Wolf struct timeval t2; 1346797ac58cSKevin Wolf 1347797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1348797ac58cSKevin Wolf 1349797ac58cSKevin Wolf 1350797ac58cSKevin Wolf if (ret < 0) { 1351797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1352797ac58cSKevin Wolf goto out; 1353797ac58cSKevin Wolf } 1354797ac58cSKevin Wolf 1355797ac58cSKevin Wolf if (ctx->qflag) { 1356797ac58cSKevin Wolf goto out; 1357797ac58cSKevin Wolf } 1358797ac58cSKevin Wolf 1359797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1360797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1361797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1362797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1363797ac58cSKevin Wolf out: 1364797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1365797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1366797ac58cSKevin Wolf g_free(ctx); 1367797ac58cSKevin Wolf } 1368797ac58cSKevin Wolf 1369797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1370797ac58cSKevin Wolf { 1371797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 1372797ac58cSKevin Wolf struct timeval t2; 1373797ac58cSKevin Wolf 1374797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1375797ac58cSKevin Wolf 1376797ac58cSKevin Wolf if (ret < 0) { 1377797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1378797ac58cSKevin Wolf goto out; 1379797ac58cSKevin Wolf } 1380797ac58cSKevin Wolf 1381797ac58cSKevin Wolf if (ctx->Pflag) { 1382797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1383797ac58cSKevin Wolf 1384797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1385797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1386797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1387797ac58cSKevin Wolf PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size); 1388797ac58cSKevin Wolf } 1389797ac58cSKevin Wolf g_free(cmp_buf); 1390797ac58cSKevin Wolf } 1391797ac58cSKevin Wolf 1392797ac58cSKevin Wolf if (ctx->qflag) { 1393797ac58cSKevin Wolf goto out; 1394797ac58cSKevin Wolf } 1395797ac58cSKevin Wolf 1396797ac58cSKevin Wolf if (ctx->vflag) { 1397797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1398797ac58cSKevin Wolf } 1399797ac58cSKevin Wolf 1400797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1401797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1402797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1403797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1404797ac58cSKevin Wolf out: 1405797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1406797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1407797ac58cSKevin Wolf g_free(ctx); 1408797ac58cSKevin Wolf } 1409797ac58cSKevin Wolf 1410797ac58cSKevin Wolf static void aio_read_help(void) 1411797ac58cSKevin Wolf { 1412797ac58cSKevin Wolf printf( 1413797ac58cSKevin Wolf "\n" 1414797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1415797ac58cSKevin Wolf "\n" 1416797ac58cSKevin Wolf " Example:\n" 1417797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1418797ac58cSKevin Wolf "\n" 1419797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1420797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1421797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1422797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1423797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1424797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 1425797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1426797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1427797ac58cSKevin Wolf "\n"); 1428797ac58cSKevin Wolf } 1429797ac58cSKevin Wolf 1430797ac58cSKevin Wolf static int aio_read_f(BlockDriverState *bs, int argc, char **argv); 1431797ac58cSKevin Wolf 1432797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1433797ac58cSKevin Wolf .name = "aio_read", 1434797ac58cSKevin Wolf .cfunc = aio_read_f, 1435797ac58cSKevin Wolf .argmin = 2, 1436797ac58cSKevin Wolf .argmax = -1, 1437797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern ] off len [len..]", 1438797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1439797ac58cSKevin Wolf .help = aio_read_help, 1440797ac58cSKevin Wolf }; 1441797ac58cSKevin Wolf 1442797ac58cSKevin Wolf static int aio_read_f(BlockDriverState *bs, int argc, char **argv) 1443797ac58cSKevin Wolf { 1444797ac58cSKevin Wolf int nr_iov, c; 1445797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1446797ac58cSKevin Wolf 1447797ac58cSKevin Wolf while ((c = getopt(argc, argv, "CP:qv")) != EOF) { 1448797ac58cSKevin Wolf switch (c) { 1449797ac58cSKevin Wolf case 'C': 1450797ac58cSKevin Wolf ctx->Cflag = 1; 1451797ac58cSKevin Wolf break; 1452797ac58cSKevin Wolf case 'P': 1453797ac58cSKevin Wolf ctx->Pflag = 1; 1454797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1455797ac58cSKevin Wolf if (ctx->pattern < 0) { 1456797ac58cSKevin Wolf g_free(ctx); 1457797ac58cSKevin Wolf return 0; 1458797ac58cSKevin Wolf } 1459797ac58cSKevin Wolf break; 1460797ac58cSKevin Wolf case 'q': 1461797ac58cSKevin Wolf ctx->qflag = 1; 1462797ac58cSKevin Wolf break; 1463797ac58cSKevin Wolf case 'v': 1464797ac58cSKevin Wolf ctx->vflag = 1; 1465797ac58cSKevin Wolf break; 1466797ac58cSKevin Wolf default: 1467797ac58cSKevin Wolf g_free(ctx); 1468c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1469797ac58cSKevin Wolf } 1470797ac58cSKevin Wolf } 1471797ac58cSKevin Wolf 1472797ac58cSKevin Wolf if (optind > argc - 2) { 1473797ac58cSKevin Wolf g_free(ctx); 1474c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_read_cmd); 1475797ac58cSKevin Wolf } 1476797ac58cSKevin Wolf 1477797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1478797ac58cSKevin Wolf if (ctx->offset < 0) { 1479797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1480797ac58cSKevin Wolf g_free(ctx); 1481797ac58cSKevin Wolf return 0; 1482797ac58cSKevin Wolf } 1483797ac58cSKevin Wolf optind++; 1484797ac58cSKevin Wolf 1485797ac58cSKevin Wolf if (ctx->offset & 0x1ff) { 1486797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1487797ac58cSKevin Wolf ctx->offset); 1488797ac58cSKevin Wolf g_free(ctx); 1489797ac58cSKevin Wolf return 0; 1490797ac58cSKevin Wolf } 1491797ac58cSKevin Wolf 1492797ac58cSKevin Wolf nr_iov = argc - optind; 1493797ac58cSKevin Wolf ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1494797ac58cSKevin Wolf if (ctx->buf == NULL) { 1495797ac58cSKevin Wolf g_free(ctx); 1496797ac58cSKevin Wolf return 0; 1497797ac58cSKevin Wolf } 1498797ac58cSKevin Wolf 1499797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 1500797ac58cSKevin Wolf bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov, 1501797ac58cSKevin Wolf ctx->qiov.size >> 9, aio_read_done, ctx); 1502797ac58cSKevin Wolf return 0; 1503797ac58cSKevin Wolf } 1504797ac58cSKevin Wolf 1505797ac58cSKevin Wolf static void aio_write_help(void) 1506797ac58cSKevin Wolf { 1507797ac58cSKevin Wolf printf( 1508797ac58cSKevin Wolf "\n" 1509797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1510797ac58cSKevin Wolf " from multiple buffers\n" 1511797ac58cSKevin Wolf "\n" 1512797ac58cSKevin Wolf " Example:\n" 1513797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1514797ac58cSKevin Wolf "\n" 1515797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1516797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1517797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1518797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1519797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1520797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1521797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1522797ac58cSKevin Wolf "\n"); 1523797ac58cSKevin Wolf } 1524797ac58cSKevin Wolf 1525797ac58cSKevin Wolf static int aio_write_f(BlockDriverState *bs, int argc, char **argv); 1526797ac58cSKevin Wolf 1527797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1528797ac58cSKevin Wolf .name = "aio_write", 1529797ac58cSKevin Wolf .cfunc = aio_write_f, 1530797ac58cSKevin Wolf .argmin = 2, 1531797ac58cSKevin Wolf .argmax = -1, 1532797ac58cSKevin Wolf .args = "[-Cq] [-P pattern ] off len [len..]", 1533797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1534797ac58cSKevin Wolf .help = aio_write_help, 1535797ac58cSKevin Wolf }; 1536797ac58cSKevin Wolf 1537797ac58cSKevin Wolf static int aio_write_f(BlockDriverState *bs, int argc, char **argv) 1538797ac58cSKevin Wolf { 1539797ac58cSKevin Wolf int nr_iov, c; 1540797ac58cSKevin Wolf int pattern = 0xcd; 1541797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1542797ac58cSKevin Wolf 1543797ac58cSKevin Wolf while ((c = getopt(argc, argv, "CqP:")) != EOF) { 1544797ac58cSKevin Wolf switch (c) { 1545797ac58cSKevin Wolf case 'C': 1546797ac58cSKevin Wolf ctx->Cflag = 1; 1547797ac58cSKevin Wolf break; 1548797ac58cSKevin Wolf case 'q': 1549797ac58cSKevin Wolf ctx->qflag = 1; 1550797ac58cSKevin Wolf break; 1551797ac58cSKevin Wolf case 'P': 1552797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1553797ac58cSKevin Wolf if (pattern < 0) { 1554797ac58cSKevin Wolf g_free(ctx); 1555797ac58cSKevin Wolf return 0; 1556797ac58cSKevin Wolf } 1557797ac58cSKevin Wolf break; 1558797ac58cSKevin Wolf default: 1559797ac58cSKevin Wolf g_free(ctx); 1560c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1561797ac58cSKevin Wolf } 1562797ac58cSKevin Wolf } 1563797ac58cSKevin Wolf 1564797ac58cSKevin Wolf if (optind > argc - 2) { 1565797ac58cSKevin Wolf g_free(ctx); 1566c2cdf5c5SKevin Wolf return qemuio_command_usage(&aio_write_cmd); 1567797ac58cSKevin Wolf } 1568797ac58cSKevin Wolf 1569797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1570797ac58cSKevin Wolf if (ctx->offset < 0) { 1571797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1572797ac58cSKevin Wolf g_free(ctx); 1573797ac58cSKevin Wolf return 0; 1574797ac58cSKevin Wolf } 1575797ac58cSKevin Wolf optind++; 1576797ac58cSKevin Wolf 1577797ac58cSKevin Wolf if (ctx->offset & 0x1ff) { 1578797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1579797ac58cSKevin Wolf ctx->offset); 1580797ac58cSKevin Wolf g_free(ctx); 1581797ac58cSKevin Wolf return 0; 1582797ac58cSKevin Wolf } 1583797ac58cSKevin Wolf 1584797ac58cSKevin Wolf nr_iov = argc - optind; 1585797ac58cSKevin Wolf ctx->buf = create_iovec(bs, &ctx->qiov, &argv[optind], nr_iov, pattern); 1586797ac58cSKevin Wolf if (ctx->buf == NULL) { 1587797ac58cSKevin Wolf g_free(ctx); 1588797ac58cSKevin Wolf return 0; 1589797ac58cSKevin Wolf } 1590797ac58cSKevin Wolf 1591797ac58cSKevin Wolf gettimeofday(&ctx->t1, NULL); 1592797ac58cSKevin Wolf bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov, 1593797ac58cSKevin Wolf ctx->qiov.size >> 9, aio_write_done, ctx); 1594797ac58cSKevin Wolf return 0; 1595797ac58cSKevin Wolf } 1596797ac58cSKevin Wolf 1597797ac58cSKevin Wolf static int aio_flush_f(BlockDriverState *bs, int argc, char **argv) 1598797ac58cSKevin Wolf { 1599797ac58cSKevin Wolf bdrv_drain_all(); 1600797ac58cSKevin Wolf return 0; 1601797ac58cSKevin Wolf } 1602797ac58cSKevin Wolf 1603797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1604797ac58cSKevin Wolf .name = "aio_flush", 1605797ac58cSKevin Wolf .cfunc = aio_flush_f, 1606797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1607797ac58cSKevin Wolf }; 1608797ac58cSKevin Wolf 1609797ac58cSKevin Wolf static int flush_f(BlockDriverState *bs, int argc, char **argv) 1610797ac58cSKevin Wolf { 1611797ac58cSKevin Wolf bdrv_flush(bs); 1612797ac58cSKevin Wolf return 0; 1613797ac58cSKevin Wolf } 1614797ac58cSKevin Wolf 1615797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1616797ac58cSKevin Wolf .name = "flush", 1617797ac58cSKevin Wolf .altname = "f", 1618797ac58cSKevin Wolf .cfunc = flush_f, 1619797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1620797ac58cSKevin Wolf }; 1621797ac58cSKevin Wolf 1622797ac58cSKevin Wolf static int truncate_f(BlockDriverState *bs, int argc, char **argv) 1623797ac58cSKevin Wolf { 1624797ac58cSKevin Wolf int64_t offset; 1625797ac58cSKevin Wolf int ret; 1626797ac58cSKevin Wolf 1627797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1628797ac58cSKevin Wolf if (offset < 0) { 1629797ac58cSKevin Wolf printf("non-numeric truncate argument -- %s\n", argv[1]); 1630797ac58cSKevin Wolf return 0; 1631797ac58cSKevin Wolf } 1632797ac58cSKevin Wolf 1633797ac58cSKevin Wolf ret = bdrv_truncate(bs, offset); 1634797ac58cSKevin Wolf if (ret < 0) { 1635797ac58cSKevin Wolf printf("truncate: %s\n", strerror(-ret)); 1636797ac58cSKevin Wolf return 0; 1637797ac58cSKevin Wolf } 1638797ac58cSKevin Wolf 1639797ac58cSKevin Wolf return 0; 1640797ac58cSKevin Wolf } 1641797ac58cSKevin Wolf 1642797ac58cSKevin Wolf static const cmdinfo_t truncate_cmd = { 1643797ac58cSKevin Wolf .name = "truncate", 1644797ac58cSKevin Wolf .altname = "t", 1645797ac58cSKevin Wolf .cfunc = truncate_f, 1646797ac58cSKevin Wolf .argmin = 1, 1647797ac58cSKevin Wolf .argmax = 1, 1648797ac58cSKevin Wolf .args = "off", 1649797ac58cSKevin Wolf .oneline = "truncates the current file at the given offset", 1650797ac58cSKevin Wolf }; 1651797ac58cSKevin Wolf 1652797ac58cSKevin Wolf static int length_f(BlockDriverState *bs, int argc, char **argv) 1653797ac58cSKevin Wolf { 1654797ac58cSKevin Wolf int64_t size; 1655797ac58cSKevin Wolf char s1[64]; 1656797ac58cSKevin Wolf 1657797ac58cSKevin Wolf size = bdrv_getlength(bs); 1658797ac58cSKevin Wolf if (size < 0) { 1659797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1660797ac58cSKevin Wolf return 0; 1661797ac58cSKevin Wolf } 1662797ac58cSKevin Wolf 1663797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1664797ac58cSKevin Wolf printf("%s\n", s1); 1665797ac58cSKevin Wolf return 0; 1666797ac58cSKevin Wolf } 1667797ac58cSKevin Wolf 1668797ac58cSKevin Wolf 1669797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1670797ac58cSKevin Wolf .name = "length", 1671797ac58cSKevin Wolf .altname = "l", 1672797ac58cSKevin Wolf .cfunc = length_f, 1673797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1674797ac58cSKevin Wolf }; 1675797ac58cSKevin Wolf 1676797ac58cSKevin Wolf 1677797ac58cSKevin Wolf static int info_f(BlockDriverState *bs, int argc, char **argv) 1678797ac58cSKevin Wolf { 1679797ac58cSKevin Wolf BlockDriverInfo bdi; 1680797ac58cSKevin Wolf char s1[64], s2[64]; 1681797ac58cSKevin Wolf int ret; 1682797ac58cSKevin Wolf 1683797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1684797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1685797ac58cSKevin Wolf } 1686797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1687797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1688797ac58cSKevin Wolf } 1689797ac58cSKevin Wolf 1690797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1691797ac58cSKevin Wolf if (ret) { 1692797ac58cSKevin Wolf return 0; 1693797ac58cSKevin Wolf } 1694797ac58cSKevin Wolf 1695797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1696797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1697797ac58cSKevin Wolf 1698797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1699797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1700797ac58cSKevin Wolf 1701797ac58cSKevin Wolf return 0; 1702797ac58cSKevin Wolf } 1703797ac58cSKevin Wolf 1704797ac58cSKevin Wolf 1705797ac58cSKevin Wolf 1706797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1707797ac58cSKevin Wolf .name = "info", 1708797ac58cSKevin Wolf .altname = "i", 1709797ac58cSKevin Wolf .cfunc = info_f, 1710797ac58cSKevin Wolf .oneline = "prints information about the current file", 1711797ac58cSKevin Wolf }; 1712797ac58cSKevin Wolf 1713797ac58cSKevin Wolf static void discard_help(void) 1714797ac58cSKevin Wolf { 1715797ac58cSKevin Wolf printf( 1716797ac58cSKevin Wolf "\n" 1717797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1718797ac58cSKevin Wolf "\n" 1719797ac58cSKevin Wolf " Example:\n" 1720797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1721797ac58cSKevin Wolf "\n" 1722797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1723797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1724797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1725797ac58cSKevin Wolf "\n"); 1726797ac58cSKevin Wolf } 1727797ac58cSKevin Wolf 1728797ac58cSKevin Wolf static int discard_f(BlockDriverState *bs, int argc, char **argv); 1729797ac58cSKevin Wolf 1730797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1731797ac58cSKevin Wolf .name = "discard", 1732797ac58cSKevin Wolf .altname = "d", 1733797ac58cSKevin Wolf .cfunc = discard_f, 1734797ac58cSKevin Wolf .argmin = 2, 1735797ac58cSKevin Wolf .argmax = -1, 1736797ac58cSKevin Wolf .args = "[-Cq] off len", 1737797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1738797ac58cSKevin Wolf .help = discard_help, 1739797ac58cSKevin Wolf }; 1740797ac58cSKevin Wolf 1741797ac58cSKevin Wolf static int discard_f(BlockDriverState *bs, int argc, char **argv) 1742797ac58cSKevin Wolf { 1743797ac58cSKevin Wolf struct timeval t1, t2; 1744797ac58cSKevin Wolf int Cflag = 0, qflag = 0; 1745797ac58cSKevin Wolf int c, ret; 1746797ac58cSKevin Wolf int64_t offset; 1747797ac58cSKevin Wolf int count; 1748797ac58cSKevin Wolf 1749797ac58cSKevin Wolf while ((c = getopt(argc, argv, "Cq")) != EOF) { 1750797ac58cSKevin Wolf switch (c) { 1751797ac58cSKevin Wolf case 'C': 1752797ac58cSKevin Wolf Cflag = 1; 1753797ac58cSKevin Wolf break; 1754797ac58cSKevin Wolf case 'q': 1755797ac58cSKevin Wolf qflag = 1; 1756797ac58cSKevin Wolf break; 1757797ac58cSKevin Wolf default: 1758c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1759797ac58cSKevin Wolf } 1760797ac58cSKevin Wolf } 1761797ac58cSKevin Wolf 1762797ac58cSKevin Wolf if (optind != argc - 2) { 1763c2cdf5c5SKevin Wolf return qemuio_command_usage(&discard_cmd); 1764797ac58cSKevin Wolf } 1765797ac58cSKevin Wolf 1766797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1767797ac58cSKevin Wolf if (offset < 0) { 1768797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1769797ac58cSKevin Wolf return 0; 1770797ac58cSKevin Wolf } 1771797ac58cSKevin Wolf 1772797ac58cSKevin Wolf optind++; 1773797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1774797ac58cSKevin Wolf if (count < 0) { 1775797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[optind]); 1776797ac58cSKevin Wolf return 0; 1777797ac58cSKevin Wolf } 1778797ac58cSKevin Wolf 1779797ac58cSKevin Wolf gettimeofday(&t1, NULL); 1780797ac58cSKevin Wolf ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, 1781797ac58cSKevin Wolf count >> BDRV_SECTOR_BITS); 1782797ac58cSKevin Wolf gettimeofday(&t2, NULL); 1783797ac58cSKevin Wolf 1784797ac58cSKevin Wolf if (ret < 0) { 1785797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1786797ac58cSKevin Wolf goto out; 1787797ac58cSKevin Wolf } 1788797ac58cSKevin Wolf 1789797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1790797ac58cSKevin Wolf if (!qflag) { 1791797ac58cSKevin Wolf t2 = tsub(t2, t1); 1792797ac58cSKevin Wolf print_report("discard", &t2, offset, count, count, 1, Cflag); 1793797ac58cSKevin Wolf } 1794797ac58cSKevin Wolf 1795797ac58cSKevin Wolf out: 1796797ac58cSKevin Wolf return 0; 1797797ac58cSKevin Wolf } 1798797ac58cSKevin Wolf 1799797ac58cSKevin Wolf static int alloc_f(BlockDriverState *bs, int argc, char **argv) 1800797ac58cSKevin Wolf { 1801797ac58cSKevin Wolf int64_t offset, sector_num; 1802797ac58cSKevin Wolf int nb_sectors, remaining; 1803797ac58cSKevin Wolf char s1[64]; 1804797ac58cSKevin Wolf int num, sum_alloc; 1805797ac58cSKevin Wolf int ret; 1806797ac58cSKevin Wolf 1807797ac58cSKevin Wolf offset = cvtnum(argv[1]); 1808797ac58cSKevin Wolf if (offset < 0) { 1809797ac58cSKevin Wolf printf("non-numeric offset argument -- %s\n", argv[1]); 1810797ac58cSKevin Wolf return 0; 1811797ac58cSKevin Wolf } else if (offset & 0x1ff) { 1812797ac58cSKevin Wolf printf("offset %" PRId64 " is not sector aligned\n", 1813797ac58cSKevin Wolf offset); 1814797ac58cSKevin Wolf return 0; 1815797ac58cSKevin Wolf } 1816797ac58cSKevin Wolf 1817797ac58cSKevin Wolf if (argc == 3) { 1818797ac58cSKevin Wolf nb_sectors = cvtnum(argv[2]); 1819797ac58cSKevin Wolf if (nb_sectors < 0) { 1820797ac58cSKevin Wolf printf("non-numeric length argument -- %s\n", argv[2]); 1821797ac58cSKevin Wolf return 0; 1822797ac58cSKevin Wolf } 1823797ac58cSKevin Wolf } else { 1824797ac58cSKevin Wolf nb_sectors = 1; 1825797ac58cSKevin Wolf } 1826797ac58cSKevin Wolf 1827797ac58cSKevin Wolf remaining = nb_sectors; 1828797ac58cSKevin Wolf sum_alloc = 0; 1829797ac58cSKevin Wolf sector_num = offset >> 9; 1830797ac58cSKevin Wolf while (remaining) { 1831797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, remaining, &num); 1832797ac58cSKevin Wolf sector_num += num; 1833797ac58cSKevin Wolf remaining -= num; 1834797ac58cSKevin Wolf if (ret) { 1835797ac58cSKevin Wolf sum_alloc += num; 1836797ac58cSKevin Wolf } 1837797ac58cSKevin Wolf if (num == 0) { 1838797ac58cSKevin Wolf nb_sectors -= remaining; 1839797ac58cSKevin Wolf remaining = 0; 1840797ac58cSKevin Wolf } 1841797ac58cSKevin Wolf } 1842797ac58cSKevin Wolf 1843797ac58cSKevin Wolf cvtstr(offset, s1, sizeof(s1)); 1844797ac58cSKevin Wolf 1845797ac58cSKevin Wolf printf("%d/%d sectors allocated at offset %s\n", 1846797ac58cSKevin Wolf sum_alloc, nb_sectors, s1); 1847797ac58cSKevin Wolf return 0; 1848797ac58cSKevin Wolf } 1849797ac58cSKevin Wolf 1850797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1851797ac58cSKevin Wolf .name = "alloc", 1852797ac58cSKevin Wolf .altname = "a", 1853797ac58cSKevin Wolf .argmin = 1, 1854797ac58cSKevin Wolf .argmax = 2, 1855797ac58cSKevin Wolf .cfunc = alloc_f, 1856797ac58cSKevin Wolf .args = "off [sectors]", 1857797ac58cSKevin Wolf .oneline = "checks if a sector is present in the file", 1858797ac58cSKevin Wolf }; 1859797ac58cSKevin Wolf 1860797ac58cSKevin Wolf 1861797ac58cSKevin Wolf static int map_is_allocated(BlockDriverState *bs, int64_t sector_num, 1862797ac58cSKevin Wolf int64_t nb_sectors, int64_t *pnum) 1863797ac58cSKevin Wolf { 1864797ac58cSKevin Wolf int num, num_checked; 1865797ac58cSKevin Wolf int ret, firstret; 1866797ac58cSKevin Wolf 1867797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1868797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1869797ac58cSKevin Wolf if (ret < 0) { 1870797ac58cSKevin Wolf return ret; 1871797ac58cSKevin Wolf } 1872797ac58cSKevin Wolf 1873797ac58cSKevin Wolf firstret = ret; 1874797ac58cSKevin Wolf *pnum = num; 1875797ac58cSKevin Wolf 1876797ac58cSKevin Wolf while (nb_sectors > 0 && ret == firstret) { 1877797ac58cSKevin Wolf sector_num += num; 1878797ac58cSKevin Wolf nb_sectors -= num; 1879797ac58cSKevin Wolf 1880797ac58cSKevin Wolf num_checked = MIN(nb_sectors, INT_MAX); 1881797ac58cSKevin Wolf ret = bdrv_is_allocated(bs, sector_num, num_checked, &num); 1882797ac58cSKevin Wolf if (ret == firstret) { 1883797ac58cSKevin Wolf *pnum += num; 1884797ac58cSKevin Wolf } else { 1885797ac58cSKevin Wolf break; 1886797ac58cSKevin Wolf } 1887797ac58cSKevin Wolf } 1888797ac58cSKevin Wolf 1889797ac58cSKevin Wolf return firstret; 1890797ac58cSKevin Wolf } 1891797ac58cSKevin Wolf 1892797ac58cSKevin Wolf static int map_f(BlockDriverState *bs, int argc, char **argv) 1893797ac58cSKevin Wolf { 1894797ac58cSKevin Wolf int64_t offset; 1895797ac58cSKevin Wolf int64_t nb_sectors; 1896797ac58cSKevin Wolf char s1[64]; 1897797ac58cSKevin Wolf int64_t num; 1898797ac58cSKevin Wolf int ret; 1899797ac58cSKevin Wolf const char *retstr; 1900797ac58cSKevin Wolf 1901797ac58cSKevin Wolf offset = 0; 1902797ac58cSKevin Wolf nb_sectors = bs->total_sectors; 1903797ac58cSKevin Wolf 1904797ac58cSKevin Wolf do { 1905797ac58cSKevin Wolf ret = map_is_allocated(bs, offset, nb_sectors, &num); 1906797ac58cSKevin Wolf if (ret < 0) { 1907797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 1908797ac58cSKevin Wolf return 0; 1909797ac58cSKevin Wolf } 1910797ac58cSKevin Wolf 1911797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 1912797ac58cSKevin Wolf cvtstr(offset << 9ULL, s1, sizeof(s1)); 1913797ac58cSKevin Wolf printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s " 1914797ac58cSKevin Wolf "at offset %s (%d)\n", 1915797ac58cSKevin Wolf offset << 9ULL, num, nb_sectors, retstr, s1, ret); 1916797ac58cSKevin Wolf 1917797ac58cSKevin Wolf offset += num; 1918797ac58cSKevin Wolf nb_sectors -= num; 1919797ac58cSKevin Wolf } while (offset < bs->total_sectors); 1920797ac58cSKevin Wolf 1921797ac58cSKevin Wolf return 0; 1922797ac58cSKevin Wolf } 1923797ac58cSKevin Wolf 1924797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 1925797ac58cSKevin Wolf .name = "map", 1926797ac58cSKevin Wolf .argmin = 0, 1927797ac58cSKevin Wolf .argmax = 0, 1928797ac58cSKevin Wolf .cfunc = map_f, 1929797ac58cSKevin Wolf .args = "", 1930797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 1931797ac58cSKevin Wolf }; 1932797ac58cSKevin Wolf 1933797ac58cSKevin Wolf static int break_f(BlockDriverState *bs, int argc, char **argv) 1934797ac58cSKevin Wolf { 1935797ac58cSKevin Wolf int ret; 1936797ac58cSKevin Wolf 1937797ac58cSKevin Wolf ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); 1938797ac58cSKevin Wolf if (ret < 0) { 1939797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 1940797ac58cSKevin Wolf } 1941797ac58cSKevin Wolf 1942797ac58cSKevin Wolf return 0; 1943797ac58cSKevin Wolf } 1944797ac58cSKevin Wolf 1945797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 1946797ac58cSKevin Wolf .name = "break", 1947797ac58cSKevin Wolf .argmin = 2, 1948797ac58cSKevin Wolf .argmax = 2, 1949797ac58cSKevin Wolf .cfunc = break_f, 1950797ac58cSKevin Wolf .args = "event tag", 1951797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 1952797ac58cSKevin Wolf "request as tag", 1953797ac58cSKevin Wolf }; 1954797ac58cSKevin Wolf 1955797ac58cSKevin Wolf static int resume_f(BlockDriverState *bs, int argc, char **argv) 1956797ac58cSKevin Wolf { 1957797ac58cSKevin Wolf int ret; 1958797ac58cSKevin Wolf 1959797ac58cSKevin Wolf ret = bdrv_debug_resume(bs, argv[1]); 1960797ac58cSKevin Wolf if (ret < 0) { 1961797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 1962797ac58cSKevin Wolf } 1963797ac58cSKevin Wolf 1964797ac58cSKevin Wolf return 0; 1965797ac58cSKevin Wolf } 1966797ac58cSKevin Wolf 1967797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 1968797ac58cSKevin Wolf .name = "resume", 1969797ac58cSKevin Wolf .argmin = 1, 1970797ac58cSKevin Wolf .argmax = 1, 1971797ac58cSKevin Wolf .cfunc = resume_f, 1972797ac58cSKevin Wolf .args = "tag", 1973797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 1974797ac58cSKevin Wolf }; 1975797ac58cSKevin Wolf 1976797ac58cSKevin Wolf static int wait_break_f(BlockDriverState *bs, int argc, char **argv) 1977797ac58cSKevin Wolf { 1978797ac58cSKevin Wolf while (!bdrv_debug_is_suspended(bs, argv[1])) { 1979797ac58cSKevin Wolf qemu_aio_wait(); 1980797ac58cSKevin Wolf } 1981797ac58cSKevin Wolf 1982797ac58cSKevin Wolf return 0; 1983797ac58cSKevin Wolf } 1984797ac58cSKevin Wolf 1985797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 1986797ac58cSKevin Wolf .name = "wait_break", 1987797ac58cSKevin Wolf .argmin = 1, 1988797ac58cSKevin Wolf .argmax = 1, 1989797ac58cSKevin Wolf .cfunc = wait_break_f, 1990797ac58cSKevin Wolf .args = "tag", 1991797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 1992797ac58cSKevin Wolf }; 1993797ac58cSKevin Wolf 1994797ac58cSKevin Wolf static int abort_f(BlockDriverState *bs, int argc, char **argv) 1995797ac58cSKevin Wolf { 1996797ac58cSKevin Wolf abort(); 1997797ac58cSKevin Wolf } 1998797ac58cSKevin Wolf 1999797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2000797ac58cSKevin Wolf .name = "abort", 2001797ac58cSKevin Wolf .cfunc = abort_f, 2002797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2003797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2004797ac58cSKevin Wolf }; 2005797ac58cSKevin Wolf 2006f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2007f18a834aSKevin Wolf { 2008f18a834aSKevin Wolf if (cmd) { 2009f18a834aSKevin Wolf printf("%s ", cmd); 2010f18a834aSKevin Wolf } else { 2011f18a834aSKevin Wolf printf("%s ", ct->name); 2012f18a834aSKevin Wolf if (ct->altname) { 2013f18a834aSKevin Wolf printf("(or %s) ", ct->altname); 2014f18a834aSKevin Wolf } 2015f18a834aSKevin Wolf } 2016f18a834aSKevin Wolf 2017f18a834aSKevin Wolf if (ct->args) { 2018f18a834aSKevin Wolf printf("%s ", ct->args); 2019f18a834aSKevin Wolf } 2020f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2021f18a834aSKevin Wolf } 2022f18a834aSKevin Wolf 2023f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2024f18a834aSKevin Wolf { 2025f18a834aSKevin Wolf help_oneline(cmd, ct); 2026f18a834aSKevin Wolf if (ct->help) { 2027f18a834aSKevin Wolf ct->help(); 2028f18a834aSKevin Wolf } 2029f18a834aSKevin Wolf } 2030f18a834aSKevin Wolf 2031f18a834aSKevin Wolf static void help_all(void) 2032f18a834aSKevin Wolf { 2033f18a834aSKevin Wolf const cmdinfo_t *ct; 2034f18a834aSKevin Wolf 2035f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2036f18a834aSKevin Wolf help_oneline(ct->name, ct); 2037f18a834aSKevin Wolf } 2038f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2039f18a834aSKevin Wolf } 2040f18a834aSKevin Wolf 2041f18a834aSKevin Wolf static int help_f(BlockDriverState *bs, int argc, char **argv) 2042f18a834aSKevin Wolf { 2043f18a834aSKevin Wolf const cmdinfo_t *ct; 2044f18a834aSKevin Wolf 2045f18a834aSKevin Wolf if (argc == 1) { 2046f18a834aSKevin Wolf help_all(); 2047f18a834aSKevin Wolf return 0; 2048f18a834aSKevin Wolf } 2049f18a834aSKevin Wolf 2050f18a834aSKevin Wolf ct = find_command(argv[1]); 2051f18a834aSKevin Wolf if (ct == NULL) { 2052f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2053f18a834aSKevin Wolf return 0; 2054f18a834aSKevin Wolf } 2055f18a834aSKevin Wolf 2056f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2057f18a834aSKevin Wolf return 0; 2058f18a834aSKevin Wolf } 2059f18a834aSKevin Wolf 2060f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2061f18a834aSKevin Wolf .name = "help", 2062f18a834aSKevin Wolf .altname = "?", 2063f18a834aSKevin Wolf .cfunc = help_f, 2064f18a834aSKevin Wolf .argmin = 0, 2065f18a834aSKevin Wolf .argmax = 1, 2066f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2067f18a834aSKevin Wolf .args = "[command]", 2068f18a834aSKevin Wolf .oneline = "help for one or all commands", 2069f18a834aSKevin Wolf }; 2070f18a834aSKevin Wolf 2071dd583296SKevin Wolf bool qemuio_command(const char *cmd) 2072dd583296SKevin Wolf { 2073dd583296SKevin Wolf char *input; 2074dd583296SKevin Wolf const cmdinfo_t *ct; 2075dd583296SKevin Wolf char **v; 2076dd583296SKevin Wolf int c; 2077dd583296SKevin Wolf bool done = false; 2078dd583296SKevin Wolf 2079dd583296SKevin Wolf input = g_strdup(cmd); 2080dd583296SKevin Wolf v = breakline(input, &c); 2081dd583296SKevin Wolf if (c) { 2082dd583296SKevin Wolf ct = find_command(v[0]); 2083dd583296SKevin Wolf if (ct) { 2084dd583296SKevin Wolf done = command(ct, c, v); 2085dd583296SKevin Wolf } else { 2086dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2087dd583296SKevin Wolf } 2088dd583296SKevin Wolf } 2089dd583296SKevin Wolf g_free(input); 2090dd583296SKevin Wolf g_free(v); 2091dd583296SKevin Wolf 2092dd583296SKevin Wolf return done; 2093dd583296SKevin Wolf } 2094dd583296SKevin Wolf 2095797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2096797ac58cSKevin Wolf { 2097797ac58cSKevin Wolf /* initialize commands */ 2098c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2099c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2100c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2101c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2102c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2103c2cdf5c5SKevin Wolf qemuio_add_command(&multiwrite_cmd); 2104c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2105c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2106c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2107c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2108c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2109c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2110c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2111c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2112c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2113c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 2114c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 2115c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2116c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2117c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2118797ac58cSKevin Wolf } 2119