1797ac58cSKevin Wolf /* 2797ac58cSKevin Wolf * Command line utility to exercise the QEMU I/O path. 3797ac58cSKevin Wolf * 4093ea232SEric Blake * Copyright (C) 2009-2016 Red Hat, Inc. 5797ac58cSKevin Wolf * Copyright (c) 2003-2005 Silicon Graphics, Inc. 6797ac58cSKevin Wolf * 7797ac58cSKevin Wolf * This work is licensed under the terms of the GNU GPL, version 2 or later. 8797ac58cSKevin Wolf * See the COPYING file in the top-level directory. 9797ac58cSKevin Wolf */ 10797ac58cSKevin Wolf 1180c71a24SPeter Maydell #include "qemu/osdep.h" 12da34e65cSMarkus Armbruster #include "qapi/error.h" 13dc900c35SAlberto Garcia #include "qapi/qmp/qdict.h" 143d21994fSKevin Wolf #include "qemu-io.h" 154c7b7e9bSMax Reitz #include "sysemu/block-backend.h" 164c7b7e9bSMax Reitz #include "block/block.h" 174c7b7e9bSMax Reitz #include "block/block_int.h" /* for info_f() */ 18a8d8ecb7SMax Reitz #include "block/qapi.h" 19d49b6836SMarkus Armbruster #include "qemu/error-report.h" 206a1751b7SAlex Bligh #include "qemu/main-loop.h" 21922a01a0SMarkus Armbruster #include "qemu/option.h" 22cd33d02aSKevin Wolf #include "qemu/timer.h" 23f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 245df022cfSPeter Maydell #include "qemu/memalign.h" 25797ac58cSKevin Wolf 26797ac58cSKevin Wolf #define CMD_NOFILE_OK 0x01 27797ac58cSKevin Wolf 28f9883880SStefan Weil bool qemuio_misalign; 29797ac58cSKevin Wolf 30c2cdf5c5SKevin Wolf static cmdinfo_t *cmdtab; 31c2cdf5c5SKevin Wolf static int ncmds; 32c2cdf5c5SKevin Wolf 33c2cdf5c5SKevin Wolf static int compare_cmdname(const void *a, const void *b) 34c2cdf5c5SKevin Wolf { 35c2cdf5c5SKevin Wolf return strcmp(((const cmdinfo_t *)a)->name, 36c2cdf5c5SKevin Wolf ((const cmdinfo_t *)b)->name); 37c2cdf5c5SKevin Wolf } 38c2cdf5c5SKevin Wolf 39c2cdf5c5SKevin Wolf void qemuio_add_command(const cmdinfo_t *ci) 40c2cdf5c5SKevin Wolf { 416aabeb58SPeter Maydell /* ci->perm assumes a file is open, but the GLOBAL and NOFILE_OK 426aabeb58SPeter Maydell * flags allow it not to be, so that combination is invalid. 436aabeb58SPeter Maydell * Catch it now rather than letting it manifest as a crash if a 446aabeb58SPeter Maydell * particular set of command line options are used. 456aabeb58SPeter Maydell */ 466aabeb58SPeter Maydell assert(ci->perm == 0 || 476aabeb58SPeter Maydell (ci->flags & (CMD_FLAG_GLOBAL | CMD_NOFILE_OK)) == 0); 4802c4f26bSMarkus Armbruster cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds); 49c2cdf5c5SKevin Wolf cmdtab[ncmds - 1] = *ci; 50c2cdf5c5SKevin Wolf qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname); 51c2cdf5c5SKevin Wolf } 52c2cdf5c5SKevin Wolf 53b444d0e9SMax Reitz void qemuio_command_usage(const cmdinfo_t *ci) 54c2cdf5c5SKevin Wolf { 55c2cdf5c5SKevin Wolf printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); 56c2cdf5c5SKevin Wolf } 57c2cdf5c5SKevin Wolf 584c7b7e9bSMax Reitz static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct) 59c2cdf5c5SKevin Wolf { 60c2cdf5c5SKevin Wolf if (ct->flags & CMD_FLAG_GLOBAL) { 61c2cdf5c5SKevin Wolf return 1; 62c2cdf5c5SKevin Wolf } 634c7b7e9bSMax Reitz if (!(ct->flags & CMD_NOFILE_OK) && !blk) { 64c2cdf5c5SKevin Wolf fprintf(stderr, "no file open, try 'help open'\n"); 65c2cdf5c5SKevin Wolf return 0; 66c2cdf5c5SKevin Wolf } 67c2cdf5c5SKevin Wolf return 1; 68c2cdf5c5SKevin Wolf } 69c2cdf5c5SKevin Wolf 70b32d7a39SMax Reitz static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc, 713d21994fSKevin Wolf char **argv) 72c2cdf5c5SKevin Wolf { 73c2cdf5c5SKevin Wolf char *cmd = argv[0]; 74c2cdf5c5SKevin Wolf 754c7b7e9bSMax Reitz if (!init_check_command(blk, ct)) { 76b32d7a39SMax Reitz return -EINVAL; 77c2cdf5c5SKevin Wolf } 78c2cdf5c5SKevin Wolf 79c2cdf5c5SKevin Wolf if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) { 80c2cdf5c5SKevin Wolf if (ct->argmax == -1) { 81c2cdf5c5SKevin Wolf fprintf(stderr, 82c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected at least %d arguments\n", 83c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 84c2cdf5c5SKevin Wolf } else if (ct->argmin == ct->argmax) { 85c2cdf5c5SKevin Wolf fprintf(stderr, 86c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected %d arguments\n", 87c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin); 88c2cdf5c5SKevin Wolf } else { 89c2cdf5c5SKevin Wolf fprintf(stderr, 90c2cdf5c5SKevin Wolf "bad argument count %d to %s, expected between %d and %d arguments\n", 91c2cdf5c5SKevin Wolf argc-1, cmd, ct->argmin, ct->argmax); 92c2cdf5c5SKevin Wolf } 93b32d7a39SMax Reitz return -EINVAL; 94c2cdf5c5SKevin Wolf } 95887354bdSKevin Wolf 968eaf1018SVladimir Sementsov-Ogievskiy /* 978eaf1018SVladimir Sementsov-Ogievskiy * Request additional permissions if necessary for this command. The caller 98887354bdSKevin Wolf * is responsible for restoring the original permissions afterwards if this 998eaf1018SVladimir Sementsov-Ogievskiy * is what it wants. 1008eaf1018SVladimir Sementsov-Ogievskiy * 1018eaf1018SVladimir Sementsov-Ogievskiy * Coverity thinks that blk may be NULL in the following if condition. It's 1028eaf1018SVladimir Sementsov-Ogievskiy * not so: in init_check_command() we fail if blk is NULL for command with 1038eaf1018SVladimir Sementsov-Ogievskiy * both CMD_FLAG_GLOBAL and CMD_NOFILE_OK flags unset. And in 1048eaf1018SVladimir Sementsov-Ogievskiy * qemuio_add_command() we assert that command with non-zero .perm field 1058eaf1018SVladimir Sementsov-Ogievskiy * doesn't set this flags. So, the following assertion is to silence 1068eaf1018SVladimir Sementsov-Ogievskiy * Coverity: 1078eaf1018SVladimir Sementsov-Ogievskiy */ 1088eaf1018SVladimir Sementsov-Ogievskiy assert(blk || !ct->perm); 109887354bdSKevin Wolf if (ct->perm && blk_is_available(blk)) { 110887354bdSKevin Wolf uint64_t orig_perm, orig_shared_perm; 111887354bdSKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 112887354bdSKevin Wolf 113887354bdSKevin Wolf if (ct->perm & ~orig_perm) { 114887354bdSKevin Wolf uint64_t new_perm; 115887354bdSKevin Wolf Error *local_err = NULL; 116887354bdSKevin Wolf int ret; 117887354bdSKevin Wolf 118887354bdSKevin Wolf new_perm = orig_perm | ct->perm; 119887354bdSKevin Wolf 120887354bdSKevin Wolf ret = blk_set_perm(blk, new_perm, orig_shared_perm, &local_err); 121887354bdSKevin Wolf if (ret < 0) { 122887354bdSKevin Wolf error_report_err(local_err); 123b32d7a39SMax Reitz return ret; 124887354bdSKevin Wolf } 125887354bdSKevin Wolf } 126887354bdSKevin Wolf } 127887354bdSKevin Wolf 128d339d766SRichard W.M. Jones qemu_reset_optind(); 129b32d7a39SMax Reitz return ct->cfunc(blk, argc, argv); 130c2cdf5c5SKevin Wolf } 131c2cdf5c5SKevin Wolf 132c2cdf5c5SKevin Wolf static const cmdinfo_t *find_command(const char *cmd) 133c2cdf5c5SKevin Wolf { 134c2cdf5c5SKevin Wolf cmdinfo_t *ct; 135c2cdf5c5SKevin Wolf 136c2cdf5c5SKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 137c2cdf5c5SKevin Wolf if (strcmp(ct->name, cmd) == 0 || 138c2cdf5c5SKevin Wolf (ct->altname && strcmp(ct->altname, cmd) == 0)) 139c2cdf5c5SKevin Wolf { 140c2cdf5c5SKevin Wolf return (const cmdinfo_t *)ct; 141c2cdf5c5SKevin Wolf } 142c2cdf5c5SKevin Wolf } 143c2cdf5c5SKevin Wolf return NULL; 144c2cdf5c5SKevin Wolf } 145c2cdf5c5SKevin Wolf 1464694020dSStefan Hajnoczi /* Invoke fn() for commands with a matching prefix */ 1474694020dSStefan Hajnoczi void qemuio_complete_command(const char *input, 1484694020dSStefan Hajnoczi void (*fn)(const char *cmd, void *opaque), 1494694020dSStefan Hajnoczi void *opaque) 1504694020dSStefan Hajnoczi { 1514694020dSStefan Hajnoczi cmdinfo_t *ct; 1524694020dSStefan Hajnoczi size_t input_len = strlen(input); 1534694020dSStefan Hajnoczi 1544694020dSStefan Hajnoczi for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 1554694020dSStefan Hajnoczi if (strncmp(input, ct->name, input_len) == 0) { 1564694020dSStefan Hajnoczi fn(ct->name, opaque); 1574694020dSStefan Hajnoczi } 1584694020dSStefan Hajnoczi } 1594694020dSStefan Hajnoczi } 1604694020dSStefan Hajnoczi 161c2cdf5c5SKevin Wolf static char **breakline(char *input, int *count) 162c2cdf5c5SKevin Wolf { 163c2cdf5c5SKevin Wolf int c = 0; 164c2cdf5c5SKevin Wolf char *p; 1655839e53bSMarkus Armbruster char **rval = g_new0(char *, 1); 166c2cdf5c5SKevin Wolf 167c2cdf5c5SKevin Wolf while (rval && (p = qemu_strsep(&input, " ")) != NULL) { 168c2cdf5c5SKevin Wolf if (!*p) { 169c2cdf5c5SKevin Wolf continue; 170c2cdf5c5SKevin Wolf } 171c2cdf5c5SKevin Wolf c++; 17208193dd5SMarkus Armbruster rval = g_renew(char *, rval, (c + 1)); 173c2cdf5c5SKevin Wolf rval[c - 1] = p; 174c2cdf5c5SKevin Wolf rval[c] = NULL; 175c2cdf5c5SKevin Wolf } 176c2cdf5c5SKevin Wolf *count = c; 177c2cdf5c5SKevin Wolf return rval; 178c2cdf5c5SKevin Wolf } 179c2cdf5c5SKevin Wolf 180797ac58cSKevin Wolf static int64_t cvtnum(const char *s) 181797ac58cSKevin Wolf { 182f17fd4fdSMarkus Armbruster int err; 183f46bfdbfSMarkus Armbruster uint64_t value; 184ef5a7885SJohn Snow 185f17fd4fdSMarkus Armbruster err = qemu_strtosz(s, NULL, &value); 186f17fd4fdSMarkus Armbruster if (err < 0) { 187f17fd4fdSMarkus Armbruster return err; 188f17fd4fdSMarkus Armbruster } 189f46bfdbfSMarkus Armbruster if (value > INT64_MAX) { 190f46bfdbfSMarkus Armbruster return -ERANGE; 191f46bfdbfSMarkus Armbruster } 192f17fd4fdSMarkus Armbruster return value; 193797ac58cSKevin Wolf } 194797ac58cSKevin Wolf 195a9ecfa00SJohn Snow static void print_cvtnum_err(int64_t rc, const char *arg) 196a9ecfa00SJohn Snow { 197a9ecfa00SJohn Snow switch (rc) { 198a9ecfa00SJohn Snow case -EINVAL: 199a9ecfa00SJohn Snow printf("Parsing error: non-numeric argument," 200a9ecfa00SJohn Snow " or extraneous/unrecognized suffix -- %s\n", arg); 201a9ecfa00SJohn Snow break; 202a9ecfa00SJohn Snow case -ERANGE: 203a9ecfa00SJohn Snow printf("Parsing error: argument too large -- %s\n", arg); 204a9ecfa00SJohn Snow break; 205a9ecfa00SJohn Snow default: 206a9ecfa00SJohn Snow printf("Parsing error: %s\n", arg); 207a9ecfa00SJohn Snow } 208a9ecfa00SJohn Snow } 209a9ecfa00SJohn Snow 2100b613881SKevin Wolf #define EXABYTES(x) ((long long)(x) << 60) 2110b613881SKevin Wolf #define PETABYTES(x) ((long long)(x) << 50) 2120b613881SKevin Wolf #define TERABYTES(x) ((long long)(x) << 40) 2130b613881SKevin Wolf #define GIGABYTES(x) ((long long)(x) << 30) 2140b613881SKevin Wolf #define MEGABYTES(x) ((long long)(x) << 20) 2150b613881SKevin Wolf #define KILOBYTES(x) ((long long)(x) << 10) 2160b613881SKevin Wolf 2170b613881SKevin Wolf #define TO_EXABYTES(x) ((x) / EXABYTES(1)) 2180b613881SKevin Wolf #define TO_PETABYTES(x) ((x) / PETABYTES(1)) 2190b613881SKevin Wolf #define TO_TERABYTES(x) ((x) / TERABYTES(1)) 2200b613881SKevin Wolf #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) 2210b613881SKevin Wolf #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) 2220b613881SKevin Wolf #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) 2230b613881SKevin Wolf 2240b613881SKevin Wolf static void cvtstr(double value, char *str, size_t size) 2250b613881SKevin Wolf { 2260b613881SKevin Wolf char *trim; 2270b613881SKevin Wolf const char *suffix; 2280b613881SKevin Wolf 2290b613881SKevin Wolf if (value >= EXABYTES(1)) { 2300b613881SKevin Wolf suffix = " EiB"; 2310b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_EXABYTES(value)); 2320b613881SKevin Wolf } else if (value >= PETABYTES(1)) { 2330b613881SKevin Wolf suffix = " PiB"; 2340b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_PETABYTES(value)); 2350b613881SKevin Wolf } else if (value >= TERABYTES(1)) { 2360b613881SKevin Wolf suffix = " TiB"; 2370b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_TERABYTES(value)); 2380b613881SKevin Wolf } else if (value >= GIGABYTES(1)) { 2390b613881SKevin Wolf suffix = " GiB"; 2400b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value)); 2410b613881SKevin Wolf } else if (value >= MEGABYTES(1)) { 2420b613881SKevin Wolf suffix = " MiB"; 2430b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value)); 2440b613881SKevin Wolf } else if (value >= KILOBYTES(1)) { 2450b613881SKevin Wolf suffix = " KiB"; 2460b613881SKevin Wolf snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value)); 2470b613881SKevin Wolf } else { 2480b613881SKevin Wolf suffix = " bytes"; 2490b613881SKevin Wolf snprintf(str, size - 6, "%f", value); 2500b613881SKevin Wolf } 2510b613881SKevin Wolf 2520b613881SKevin Wolf trim = strstr(str, ".000"); 2530b613881SKevin Wolf if (trim) { 2540b613881SKevin Wolf strcpy(trim, suffix); 2550b613881SKevin Wolf } else { 2560b613881SKevin Wolf strcat(str, suffix); 2570b613881SKevin Wolf } 2580b613881SKevin Wolf } 2590b613881SKevin Wolf 2600b613881SKevin Wolf 2610b613881SKevin Wolf 26250290c00SAlex Bennée static struct timespec tsub(struct timespec t1, struct timespec t2) 2630b613881SKevin Wolf { 26450290c00SAlex Bennée t1.tv_nsec -= t2.tv_nsec; 26550290c00SAlex Bennée if (t1.tv_nsec < 0) { 26650290c00SAlex Bennée t1.tv_nsec += NANOSECONDS_PER_SECOND; 2670b613881SKevin Wolf t1.tv_sec--; 2680b613881SKevin Wolf } 2690b613881SKevin Wolf t1.tv_sec -= t2.tv_sec; 2700b613881SKevin Wolf return t1; 2710b613881SKevin Wolf } 2720b613881SKevin Wolf 27350290c00SAlex Bennée static double tdiv(double value, struct timespec tv) 2740b613881SKevin Wolf { 27550290c00SAlex Bennée double seconds = tv.tv_sec + (tv.tv_nsec / 1e9); 27650290c00SAlex Bennée return value / seconds; 2770b613881SKevin Wolf } 2780b613881SKevin Wolf 2790b613881SKevin Wolf #define HOURS(sec) ((sec) / (60 * 60)) 2800b613881SKevin Wolf #define MINUTES(sec) (((sec) % (60 * 60)) / 60) 2810b613881SKevin Wolf #define SECONDS(sec) ((sec) % 60) 2820b613881SKevin Wolf 2830b613881SKevin Wolf enum { 2840b613881SKevin Wolf DEFAULT_TIME = 0x0, 2850b613881SKevin Wolf TERSE_FIXED_TIME = 0x1, 2860b613881SKevin Wolf VERBOSE_FIXED_TIME = 0x2, 2870b613881SKevin Wolf }; 2880b613881SKevin Wolf 28950290c00SAlex Bennée static void timestr(struct timespec *tv, char *ts, size_t size, int format) 2900b613881SKevin Wolf { 29150290c00SAlex Bennée double frac_sec = tv->tv_nsec / 1e9; 2920b613881SKevin Wolf 2930b613881SKevin Wolf if (format & TERSE_FIXED_TIME) { 2940b613881SKevin Wolf if (!HOURS(tv->tv_sec)) { 29550290c00SAlex Bennée snprintf(ts, size, "%u:%05.2f", 2960b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 29750290c00SAlex Bennée SECONDS(tv->tv_sec) + frac_sec); 2980b613881SKevin Wolf return; 2990b613881SKevin Wolf } 3000b613881SKevin Wolf format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ 3010b613881SKevin Wolf } 3020b613881SKevin Wolf 3030b613881SKevin Wolf if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { 30450290c00SAlex Bennée snprintf(ts, size, "%u:%02u:%05.2f", 3050b613881SKevin Wolf (unsigned int) HOURS(tv->tv_sec), 3060b613881SKevin Wolf (unsigned int) MINUTES(tv->tv_sec), 30750290c00SAlex Bennée SECONDS(tv->tv_sec) + frac_sec); 3080b613881SKevin Wolf } else { 30950290c00SAlex Bennée snprintf(ts, size, "%05.2f sec", frac_sec); 3100b613881SKevin Wolf } 3110b613881SKevin Wolf } 3120b613881SKevin Wolf 313797ac58cSKevin Wolf /* 314797ac58cSKevin Wolf * Parse the pattern argument to various sub-commands. 315797ac58cSKevin Wolf * 316797ac58cSKevin Wolf * Because the pattern is used as an argument to memset it must evaluate 317797ac58cSKevin Wolf * to an unsigned integer that fits into a single byte. 318797ac58cSKevin Wolf */ 319797ac58cSKevin Wolf static int parse_pattern(const char *arg) 320797ac58cSKevin Wolf { 321797ac58cSKevin Wolf char *endptr = NULL; 322797ac58cSKevin Wolf long pattern; 323797ac58cSKevin Wolf 324797ac58cSKevin Wolf pattern = strtol(arg, &endptr, 0); 325797ac58cSKevin Wolf if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { 326797ac58cSKevin Wolf printf("%s is not a valid pattern byte\n", arg); 327797ac58cSKevin Wolf return -1; 328797ac58cSKevin Wolf } 329797ac58cSKevin Wolf 330797ac58cSKevin Wolf return pattern; 331797ac58cSKevin Wolf } 332797ac58cSKevin Wolf 333797ac58cSKevin Wolf /* 334797ac58cSKevin Wolf * Memory allocation helpers. 335797ac58cSKevin Wolf * 336797ac58cSKevin Wolf * Make sure memory is aligned by default, or purposefully misaligned if 337797ac58cSKevin Wolf * that is specified on the command line. 338797ac58cSKevin Wolf */ 339797ac58cSKevin Wolf 340797ac58cSKevin Wolf #define MISALIGN_OFFSET 16 3414c7b7e9bSMax Reitz static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern) 342797ac58cSKevin Wolf { 343797ac58cSKevin Wolf void *buf; 344797ac58cSKevin Wolf 345797ac58cSKevin Wolf if (qemuio_misalign) { 346797ac58cSKevin Wolf len += MISALIGN_OFFSET; 347797ac58cSKevin Wolf } 3484c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 349797ac58cSKevin Wolf memset(buf, pattern, len); 350797ac58cSKevin Wolf if (qemuio_misalign) { 351797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 352797ac58cSKevin Wolf } 353797ac58cSKevin Wolf return buf; 354797ac58cSKevin Wolf } 355797ac58cSKevin Wolf 356797ac58cSKevin Wolf static void qemu_io_free(void *p) 357797ac58cSKevin Wolf { 358797ac58cSKevin Wolf if (qemuio_misalign) { 359797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 360797ac58cSKevin Wolf } 361797ac58cSKevin Wolf qemu_vfree(p); 362797ac58cSKevin Wolf } 363797ac58cSKevin Wolf 3644d731510SDenis Plotnikov /* 3654d731510SDenis Plotnikov * qemu_io_alloc_from_file() 3664d731510SDenis Plotnikov * 3674d731510SDenis Plotnikov * Allocates the buffer and populates it with the content of the given file 3684d731510SDenis Plotnikov * up to @len bytes. If the file length is less than @len, then the buffer 3694d731510SDenis Plotnikov * is populated with the file content cyclically. 3704d731510SDenis Plotnikov * 3714d731510SDenis Plotnikov * @blk - the block backend where the buffer content is going to be written to 3724d731510SDenis Plotnikov * @len - the buffer length 3734d731510SDenis Plotnikov * @file_name - the file to read the content from 3744d731510SDenis Plotnikov * 3754d731510SDenis Plotnikov * Returns: the buffer pointer on success 3764d731510SDenis Plotnikov * NULL on error 3774d731510SDenis Plotnikov */ 3784d731510SDenis Plotnikov static void *qemu_io_alloc_from_file(BlockBackend *blk, size_t len, 3794d731510SDenis Plotnikov const char *file_name) 3804d731510SDenis Plotnikov { 3814d731510SDenis Plotnikov char *buf, *buf_origin; 3824d731510SDenis Plotnikov FILE *f = fopen(file_name, "r"); 3834d731510SDenis Plotnikov int pattern_len; 3844d731510SDenis Plotnikov 3854d731510SDenis Plotnikov if (!f) { 3864d731510SDenis Plotnikov perror(file_name); 3874d731510SDenis Plotnikov return NULL; 3884d731510SDenis Plotnikov } 3894d731510SDenis Plotnikov 3904d731510SDenis Plotnikov if (qemuio_misalign) { 3914d731510SDenis Plotnikov len += MISALIGN_OFFSET; 3924d731510SDenis Plotnikov } 3934d731510SDenis Plotnikov 3944d731510SDenis Plotnikov buf_origin = buf = blk_blockalign(blk, len); 3954d731510SDenis Plotnikov 3964d731510SDenis Plotnikov if (qemuio_misalign) { 3974d731510SDenis Plotnikov buf_origin += MISALIGN_OFFSET; 3984d731510SDenis Plotnikov buf += MISALIGN_OFFSET; 3994d731510SDenis Plotnikov len -= MISALIGN_OFFSET; 4004d731510SDenis Plotnikov } 4014d731510SDenis Plotnikov 4024d731510SDenis Plotnikov pattern_len = fread(buf_origin, 1, len, f); 4034d731510SDenis Plotnikov 4044d731510SDenis Plotnikov if (ferror(f)) { 4054d731510SDenis Plotnikov perror(file_name); 4064d731510SDenis Plotnikov goto error; 4074d731510SDenis Plotnikov } 4084d731510SDenis Plotnikov 4094d731510SDenis Plotnikov if (pattern_len == 0) { 4104d731510SDenis Plotnikov fprintf(stderr, "%s: file is empty\n", file_name); 4114d731510SDenis Plotnikov goto error; 4124d731510SDenis Plotnikov } 4134d731510SDenis Plotnikov 4144d731510SDenis Plotnikov fclose(f); 415c8e68b43SKevin Wolf f = NULL; 4164d731510SDenis Plotnikov 4174d731510SDenis Plotnikov if (len > pattern_len) { 4184d731510SDenis Plotnikov len -= pattern_len; 4194d731510SDenis Plotnikov buf += pattern_len; 4204d731510SDenis Plotnikov 4214d731510SDenis Plotnikov while (len > 0) { 4224d731510SDenis Plotnikov size_t len_to_copy = MIN(pattern_len, len); 4234d731510SDenis Plotnikov 4244d731510SDenis Plotnikov memcpy(buf, buf_origin, len_to_copy); 4254d731510SDenis Plotnikov 4264d731510SDenis Plotnikov len -= len_to_copy; 4274d731510SDenis Plotnikov buf += len_to_copy; 4284d731510SDenis Plotnikov } 4294d731510SDenis Plotnikov } 4304d731510SDenis Plotnikov 4314d731510SDenis Plotnikov return buf_origin; 4324d731510SDenis Plotnikov 4334d731510SDenis Plotnikov error: 4344d731510SDenis Plotnikov qemu_io_free(buf_origin); 435c8e68b43SKevin Wolf if (f) { 436c8e68b43SKevin Wolf fclose(f); 437c8e68b43SKevin Wolf } 4384d731510SDenis Plotnikov return NULL; 4394d731510SDenis Plotnikov } 4404d731510SDenis Plotnikov 4419b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 442797ac58cSKevin Wolf { 4439b0beaf3SJohn Snow uint64_t i; 4449b0beaf3SJohn Snow int j; 445797ac58cSKevin Wolf const uint8_t *p; 446797ac58cSKevin Wolf 447797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 448797ac58cSKevin Wolf const uint8_t *s = p; 449797ac58cSKevin Wolf 450797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 451797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 452797ac58cSKevin Wolf printf("%02x ", *p); 453797ac58cSKevin Wolf } 454797ac58cSKevin Wolf printf(" "); 455797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 456797ac58cSKevin Wolf if (isalnum(*s)) { 457797ac58cSKevin Wolf printf("%c", *s); 458797ac58cSKevin Wolf } else { 459797ac58cSKevin Wolf printf("."); 460797ac58cSKevin Wolf } 461797ac58cSKevin Wolf } 462797ac58cSKevin Wolf printf("\n"); 463797ac58cSKevin Wolf } 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf 46650290c00SAlex Bennée static void print_report(const char *op, struct timespec *t, int64_t offset, 467dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 468797ac58cSKevin Wolf { 469797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 470797ac58cSKevin Wolf 471797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 472797ac58cSKevin Wolf if (!Cflag) { 473797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 474797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 4759b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 476797ac58cSKevin Wolf op, total, count, offset); 477797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 478797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 479797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 4809b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 481797ac58cSKevin Wolf total, cnt, ts, 482797ac58cSKevin Wolf tdiv((double)total, *t), 483797ac58cSKevin Wolf tdiv((double)cnt, *t)); 484797ac58cSKevin Wolf } 485797ac58cSKevin Wolf } 486797ac58cSKevin Wolf 487797ac58cSKevin Wolf /* 488797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 489797ac58cSKevin Wolf * vector matching it. 490797ac58cSKevin Wolf */ 491797ac58cSKevin Wolf static void * 4924c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 493797ac58cSKevin Wolf int pattern) 494797ac58cSKevin Wolf { 495797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 496797ac58cSKevin Wolf size_t count = 0; 497797ac58cSKevin Wolf void *buf = NULL; 498797ac58cSKevin Wolf void *p; 499797ac58cSKevin Wolf int i; 500797ac58cSKevin Wolf 501797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 502797ac58cSKevin Wolf char *arg = argv[i]; 503797ac58cSKevin Wolf int64_t len; 504797ac58cSKevin Wolf 505797ac58cSKevin Wolf len = cvtnum(arg); 506797ac58cSKevin Wolf if (len < 0) { 507a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 508797ac58cSKevin Wolf goto fail; 509797ac58cSKevin Wolf } 510797ac58cSKevin Wolf 5113026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 5123026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 5133026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 5143026c468SAlberto Garcia goto fail; 5153026c468SAlberto Garcia } 5163026c468SAlberto Garcia 5173026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 5183026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 5193026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 520797ac58cSKevin Wolf goto fail; 521797ac58cSKevin Wolf } 522797ac58cSKevin Wolf 523797ac58cSKevin Wolf sizes[i] = len; 524797ac58cSKevin Wolf count += len; 525797ac58cSKevin Wolf } 526797ac58cSKevin Wolf 527797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 528797ac58cSKevin Wolf 5294c7b7e9bSMax Reitz buf = p = qemu_io_alloc(blk, count, pattern); 530797ac58cSKevin Wolf 531797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 532797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 533797ac58cSKevin Wolf p += sizes[i]; 534797ac58cSKevin Wolf } 535797ac58cSKevin Wolf 536797ac58cSKevin Wolf fail: 537797ac58cSKevin Wolf g_free(sizes); 538797ac58cSKevin Wolf return buf; 539797ac58cSKevin Wolf } 540797ac58cSKevin Wolf 5419b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 542f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 543797ac58cSKevin Wolf { 544bf5b16faSAlberto Faria int ret; 545bf5b16faSAlberto Faria 546f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5479b0beaf3SJohn Snow return -ERANGE; 5489b0beaf3SJohn Snow } 5499b0beaf3SJohn Snow 550a9262f55SAlberto Faria ret = blk_pread(blk, offset, bytes, (uint8_t *)buf, 0); 551bf5b16faSAlberto Faria if (ret < 0) { 552bf5b16faSAlberto Faria return ret; 553797ac58cSKevin Wolf } 554bf5b16faSAlberto Faria *total = bytes; 555797ac58cSKevin Wolf return 1; 556797ac58cSKevin Wolf } 557797ac58cSKevin Wolf 5589b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 559f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 560797ac58cSKevin Wolf { 561bf5b16faSAlberto Faria int ret; 562bf5b16faSAlberto Faria 563f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5649b0beaf3SJohn Snow return -ERANGE; 5659b0beaf3SJohn Snow } 5669b0beaf3SJohn Snow 567a9262f55SAlberto Faria ret = blk_pwrite(blk, offset, bytes, (uint8_t *)buf, flags); 568bf5b16faSAlberto Faria if (ret < 0) { 569bf5b16faSAlberto Faria return ret; 570797ac58cSKevin Wolf } 571bf5b16faSAlberto Faria *total = bytes; 572797ac58cSKevin Wolf return 1; 573797ac58cSKevin Wolf } 574797ac58cSKevin Wolf 575264dcbb2SPaolo Bonzini static int do_pwrite_zeroes(BlockBackend *blk, int64_t offset, 576f5a5ca79SManos Pitsidianakis int64_t bytes, int flags, int64_t *total) 577797ac58cSKevin Wolf { 578264dcbb2SPaolo Bonzini int ret = blk_pwrite_zeroes(blk, offset, bytes, 579264dcbb2SPaolo Bonzini flags | BDRV_REQ_ZERO_WRITE); 580797ac58cSKevin Wolf 581264dcbb2SPaolo Bonzini if (ret < 0) { 582264dcbb2SPaolo Bonzini return ret; 583797ac58cSKevin Wolf } 584264dcbb2SPaolo Bonzini *total = bytes; 585797ac58cSKevin Wolf return 1; 586797ac58cSKevin Wolf } 587797ac58cSKevin Wolf 5884c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 589f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 590797ac58cSKevin Wolf { 591797ac58cSKevin Wolf int ret; 592797ac58cSKevin Wolf 59341ae31e3SAlberto Garcia if (bytes > BDRV_REQUEST_MAX_BYTES) { 5949b0beaf3SJohn Snow return -ERANGE; 5959b0beaf3SJohn Snow } 5969b0beaf3SJohn Snow 5970cadf2c8SAlberto Faria ret = blk_pwrite_compressed(blk, offset, bytes, buf); 598797ac58cSKevin Wolf if (ret < 0) { 599797ac58cSKevin Wolf return ret; 600797ac58cSKevin Wolf } 601f5a5ca79SManos Pitsidianakis *total = bytes; 602797ac58cSKevin Wolf return 1; 603797ac58cSKevin Wolf } 604797ac58cSKevin Wolf 6054c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6069b0beaf3SJohn Snow int64_t count, int64_t *total) 607797ac58cSKevin Wolf { 6089b0beaf3SJohn Snow if (count > INT_MAX) { 6099b0beaf3SJohn Snow return -ERANGE; 6109b0beaf3SJohn Snow } 6119b0beaf3SJohn Snow 6124c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 613797ac58cSKevin Wolf if (*total < 0) { 614797ac58cSKevin Wolf return *total; 615797ac58cSKevin Wolf } 616797ac58cSKevin Wolf return 1; 617797ac58cSKevin Wolf } 618797ac58cSKevin Wolf 6194c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6209b0beaf3SJohn Snow int64_t count, int64_t *total) 621797ac58cSKevin Wolf { 6229b0beaf3SJohn Snow if (count > INT_MAX) { 6239b0beaf3SJohn Snow return -ERANGE; 6249b0beaf3SJohn Snow } 6259b0beaf3SJohn Snow 6264c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 627797ac58cSKevin Wolf if (*total < 0) { 628797ac58cSKevin Wolf return *total; 629797ac58cSKevin Wolf } 630797ac58cSKevin Wolf return 1; 631797ac58cSKevin Wolf } 632797ac58cSKevin Wolf 633797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 634797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 635797ac58cSKevin Wolf { 636797ac58cSKevin Wolf *(int *)opaque = ret; 637797ac58cSKevin Wolf } 638797ac58cSKevin Wolf 6394c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 640797ac58cSKevin Wolf int64_t offset, int *total) 641797ac58cSKevin Wolf { 642797ac58cSKevin Wolf int async_ret = NOT_DONE; 643797ac58cSKevin Wolf 6447b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 645797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 646797ac58cSKevin Wolf main_loop_wait(false); 647797ac58cSKevin Wolf } 648797ac58cSKevin Wolf 649797ac58cSKevin Wolf *total = qiov->size; 650797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 651797ac58cSKevin Wolf } 652797ac58cSKevin Wolf 6534c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 654770e0e0eSEric Blake int64_t offset, int flags, int *total) 655797ac58cSKevin Wolf { 656797ac58cSKevin Wolf int async_ret = NOT_DONE; 657797ac58cSKevin Wolf 658770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 659797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 660797ac58cSKevin Wolf main_loop_wait(false); 661797ac58cSKevin Wolf } 662797ac58cSKevin Wolf 663797ac58cSKevin Wolf *total = qiov->size; 664797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 665797ac58cSKevin Wolf } 666797ac58cSKevin Wolf 667797ac58cSKevin Wolf static void read_help(void) 668797ac58cSKevin Wolf { 669797ac58cSKevin Wolf printf( 670797ac58cSKevin Wolf "\n" 671797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 672797ac58cSKevin Wolf "\n" 673797ac58cSKevin Wolf " Example:\n" 674797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 675797ac58cSKevin Wolf "\n" 676797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 677797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 678797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 679797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 680797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 681093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 682797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 683797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 684797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 685797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 686797ac58cSKevin Wolf "\n"); 687797ac58cSKevin Wolf } 688797ac58cSKevin Wolf 689b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 690797ac58cSKevin Wolf 691797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 692797ac58cSKevin Wolf .name = "read", 693797ac58cSKevin Wolf .altname = "r", 694797ac58cSKevin Wolf .cfunc = read_f, 695797ac58cSKevin Wolf .argmin = 2, 696797ac58cSKevin Wolf .argmax = -1, 697093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 698797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 699797ac58cSKevin Wolf .help = read_help, 700797ac58cSKevin Wolf }; 701797ac58cSKevin Wolf 702b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 703797ac58cSKevin Wolf { 70450290c00SAlex Bennée struct timespec t1, t2; 705093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 706dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 707b32d7a39SMax Reitz int c, cnt, ret; 708797ac58cSKevin Wolf char *buf; 709797ac58cSKevin Wolf int64_t offset; 7109b0beaf3SJohn Snow int64_t count; 711797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 7129b0beaf3SJohn Snow int64_t total = 0; 7139b0beaf3SJohn Snow int pattern = 0; 7149b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 715797ac58cSKevin Wolf 716b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 717797ac58cSKevin Wolf switch (c) { 718797ac58cSKevin Wolf case 'b': 719dc38852aSEric Blake bflag = true; 720797ac58cSKevin Wolf break; 721797ac58cSKevin Wolf case 'C': 722dc38852aSEric Blake Cflag = true; 723797ac58cSKevin Wolf break; 724797ac58cSKevin Wolf case 'l': 725dc38852aSEric Blake lflag = true; 726797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 727797ac58cSKevin Wolf if (pattern_count < 0) { 728a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 729b32d7a39SMax Reitz return pattern_count; 730797ac58cSKevin Wolf } 731797ac58cSKevin Wolf break; 732797ac58cSKevin Wolf case 'p': 733093ea232SEric Blake /* Ignored for backwards compatibility */ 734797ac58cSKevin Wolf break; 735797ac58cSKevin Wolf case 'P': 736dc38852aSEric Blake Pflag = true; 737797ac58cSKevin Wolf pattern = parse_pattern(optarg); 738797ac58cSKevin Wolf if (pattern < 0) { 739b32d7a39SMax Reitz return -EINVAL; 740797ac58cSKevin Wolf } 741797ac58cSKevin Wolf break; 742797ac58cSKevin Wolf case 'q': 743dc38852aSEric Blake qflag = true; 744797ac58cSKevin Wolf break; 745797ac58cSKevin Wolf case 's': 746dc38852aSEric Blake sflag = true; 747797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 748797ac58cSKevin Wolf if (pattern_offset < 0) { 749a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 750b32d7a39SMax Reitz return pattern_offset; 751797ac58cSKevin Wolf } 752797ac58cSKevin Wolf break; 753797ac58cSKevin Wolf case 'v': 754dc38852aSEric Blake vflag = true; 755797ac58cSKevin Wolf break; 756797ac58cSKevin Wolf default: 757b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 758b32d7a39SMax Reitz return -EINVAL; 759797ac58cSKevin Wolf } 760797ac58cSKevin Wolf } 761797ac58cSKevin Wolf 762797ac58cSKevin Wolf if (optind != argc - 2) { 763b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 764b32d7a39SMax Reitz return -EINVAL; 765797ac58cSKevin Wolf } 766797ac58cSKevin Wolf 767797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 768797ac58cSKevin Wolf if (offset < 0) { 769a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 770b32d7a39SMax Reitz return offset; 771797ac58cSKevin Wolf } 772797ac58cSKevin Wolf 773797ac58cSKevin Wolf optind++; 774797ac58cSKevin Wolf count = cvtnum(argv[optind]); 775797ac58cSKevin Wolf if (count < 0) { 776a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 777b32d7a39SMax Reitz return count; 7783026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7799b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7803026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 781b32d7a39SMax Reitz return -EINVAL; 782797ac58cSKevin Wolf } 783797ac58cSKevin Wolf 784797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 785b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 786b32d7a39SMax Reitz return -EINVAL; 787797ac58cSKevin Wolf } 788797ac58cSKevin Wolf 789797ac58cSKevin Wolf if (!lflag) { 790797ac58cSKevin Wolf pattern_count = count - pattern_offset; 791797ac58cSKevin Wolf } 792797ac58cSKevin Wolf 793797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 794797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 795b32d7a39SMax Reitz return -EINVAL; 796797ac58cSKevin Wolf } 797797ac58cSKevin Wolf 798093ea232SEric Blake if (bflag) { 7991bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 8001bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 801797ac58cSKevin Wolf offset); 802b32d7a39SMax Reitz return -EINVAL; 803797ac58cSKevin Wolf } 8041bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 8051bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 806797ac58cSKevin Wolf count); 807b32d7a39SMax Reitz return -EINVAL; 808797ac58cSKevin Wolf } 809797ac58cSKevin Wolf } 810797ac58cSKevin Wolf 8114c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 812797ac58cSKevin Wolf 81350290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 8147b3f9712SEric Blake if (bflag) { 815b32d7a39SMax Reitz ret = do_load_vmstate(blk, buf, offset, count, &total); 816797ac58cSKevin Wolf } else { 817b32d7a39SMax Reitz ret = do_pread(blk, buf, offset, count, &total); 818797ac58cSKevin Wolf } 81950290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 820797ac58cSKevin Wolf 821b32d7a39SMax Reitz if (ret < 0) { 822b32d7a39SMax Reitz printf("read failed: %s\n", strerror(-ret)); 823797ac58cSKevin Wolf goto out; 824797ac58cSKevin Wolf } 825b32d7a39SMax Reitz cnt = ret; 826b32d7a39SMax Reitz 827b32d7a39SMax Reitz ret = 0; 828797ac58cSKevin Wolf 829797ac58cSKevin Wolf if (Pflag) { 830797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 831797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 832797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 833797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 8349b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 835797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 836b32d7a39SMax Reitz ret = -EINVAL; 837797ac58cSKevin Wolf } 838797ac58cSKevin Wolf g_free(cmp_buf); 839797ac58cSKevin Wolf } 840797ac58cSKevin Wolf 841797ac58cSKevin Wolf if (qflag) { 842797ac58cSKevin Wolf goto out; 843797ac58cSKevin Wolf } 844797ac58cSKevin Wolf 845797ac58cSKevin Wolf if (vflag) { 846797ac58cSKevin Wolf dump_buffer(buf, offset, count); 847797ac58cSKevin Wolf } 848797ac58cSKevin Wolf 849797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 850797ac58cSKevin Wolf t2 = tsub(t2, t1); 851797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 852797ac58cSKevin Wolf 853797ac58cSKevin Wolf out: 854797ac58cSKevin Wolf qemu_io_free(buf); 855b32d7a39SMax Reitz return ret; 856797ac58cSKevin Wolf } 857797ac58cSKevin Wolf 858797ac58cSKevin Wolf static void readv_help(void) 859797ac58cSKevin Wolf { 860797ac58cSKevin Wolf printf( 861797ac58cSKevin Wolf "\n" 862797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 863797ac58cSKevin Wolf "\n" 864797ac58cSKevin Wolf " Example:\n" 865797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 866797ac58cSKevin Wolf "\n" 867797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 868797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 869797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 870797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 871797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 872797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 873797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 874797ac58cSKevin Wolf "\n"); 875797ac58cSKevin Wolf } 876797ac58cSKevin Wolf 877b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 878797ac58cSKevin Wolf 879797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 880797ac58cSKevin Wolf .name = "readv", 881797ac58cSKevin Wolf .cfunc = readv_f, 882797ac58cSKevin Wolf .argmin = 2, 883797ac58cSKevin Wolf .argmax = -1, 884797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 885797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 886797ac58cSKevin Wolf .help = readv_help, 887797ac58cSKevin Wolf }; 888797ac58cSKevin Wolf 889b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 890797ac58cSKevin Wolf { 89150290c00SAlex Bennée struct timespec t1, t2; 892dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 893b32d7a39SMax Reitz int c, cnt, ret; 894797ac58cSKevin Wolf char *buf; 895797ac58cSKevin Wolf int64_t offset; 896797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 897797ac58cSKevin Wolf int total = 0; 898797ac58cSKevin Wolf int nr_iov; 899797ac58cSKevin Wolf QEMUIOVector qiov; 900797ac58cSKevin Wolf int pattern = 0; 901dc38852aSEric Blake bool Pflag = false; 902797ac58cSKevin Wolf 903b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 904797ac58cSKevin Wolf switch (c) { 905797ac58cSKevin Wolf case 'C': 906dc38852aSEric Blake Cflag = true; 907797ac58cSKevin Wolf break; 908797ac58cSKevin Wolf case 'P': 909dc38852aSEric Blake Pflag = true; 910797ac58cSKevin Wolf pattern = parse_pattern(optarg); 911797ac58cSKevin Wolf if (pattern < 0) { 912b32d7a39SMax Reitz return -EINVAL; 913797ac58cSKevin Wolf } 914797ac58cSKevin Wolf break; 915797ac58cSKevin Wolf case 'q': 916dc38852aSEric Blake qflag = true; 917797ac58cSKevin Wolf break; 918797ac58cSKevin Wolf case 'v': 919dc38852aSEric Blake vflag = true; 920797ac58cSKevin Wolf break; 921797ac58cSKevin Wolf default: 922b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 923b32d7a39SMax Reitz return -EINVAL; 924797ac58cSKevin Wolf } 925797ac58cSKevin Wolf } 926797ac58cSKevin Wolf 927797ac58cSKevin Wolf if (optind > argc - 2) { 928b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 929b32d7a39SMax Reitz return -EINVAL; 930797ac58cSKevin Wolf } 931797ac58cSKevin Wolf 932797ac58cSKevin Wolf 933797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 934797ac58cSKevin Wolf if (offset < 0) { 935a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 936b32d7a39SMax Reitz return offset; 937797ac58cSKevin Wolf } 938797ac58cSKevin Wolf optind++; 939797ac58cSKevin Wolf 940797ac58cSKevin Wolf nr_iov = argc - optind; 9414c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 942797ac58cSKevin Wolf if (buf == NULL) { 943b32d7a39SMax Reitz return -EINVAL; 944797ac58cSKevin Wolf } 945797ac58cSKevin Wolf 94650290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 947b32d7a39SMax Reitz ret = do_aio_readv(blk, &qiov, offset, &total); 94850290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 949797ac58cSKevin Wolf 950b32d7a39SMax Reitz if (ret < 0) { 951b32d7a39SMax Reitz printf("readv failed: %s\n", strerror(-ret)); 952797ac58cSKevin Wolf goto out; 953797ac58cSKevin Wolf } 954b32d7a39SMax Reitz cnt = ret; 955b32d7a39SMax Reitz 956b32d7a39SMax Reitz ret = 0; 957797ac58cSKevin Wolf 958797ac58cSKevin Wolf if (Pflag) { 959797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 960797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 961797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 962797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 963cf67b692SStefan Weil PRId64 ", %zu bytes\n", offset, qiov.size); 964b32d7a39SMax Reitz ret = -EINVAL; 965797ac58cSKevin Wolf } 966797ac58cSKevin Wolf g_free(cmp_buf); 967797ac58cSKevin Wolf } 968797ac58cSKevin Wolf 969797ac58cSKevin Wolf if (qflag) { 970797ac58cSKevin Wolf goto out; 971797ac58cSKevin Wolf } 972797ac58cSKevin Wolf 973797ac58cSKevin Wolf if (vflag) { 974797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 975797ac58cSKevin Wolf } 976797ac58cSKevin Wolf 977797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 978797ac58cSKevin Wolf t2 = tsub(t2, t1); 979797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 980797ac58cSKevin Wolf 981797ac58cSKevin Wolf out: 982797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 983797ac58cSKevin Wolf qemu_io_free(buf); 984b32d7a39SMax Reitz return ret; 985797ac58cSKevin Wolf } 986797ac58cSKevin Wolf 987797ac58cSKevin Wolf static void write_help(void) 988797ac58cSKevin Wolf { 989797ac58cSKevin Wolf printf( 990797ac58cSKevin Wolf "\n" 991797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 992797ac58cSKevin Wolf "\n" 993797ac58cSKevin Wolf " Example:\n" 994797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 995797ac58cSKevin Wolf "\n" 996797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 997797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 998797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 9994c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 1000770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1001c6e3f520SKevin Wolf " -n, -- with -z, don't allow slow fallback\n" 1002093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 1003797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 10044d731510SDenis Plotnikov " -s, -- use a pattern file to fill the write buffer\n" 1005797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1006797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1007c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1008264dcbb2SPaolo Bonzini " -z, -- write zeroes using blk_pwrite_zeroes\n" 1009797ac58cSKevin Wolf "\n"); 1010797ac58cSKevin Wolf } 1011797ac58cSKevin Wolf 1012b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 1013797ac58cSKevin Wolf 1014797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 1015797ac58cSKevin Wolf .name = "write", 1016797ac58cSKevin Wolf .altname = "w", 1017797ac58cSKevin Wolf .cfunc = write_f, 1018887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1019797ac58cSKevin Wolf .argmin = 2, 1020797ac58cSKevin Wolf .argmax = -1, 10214d731510SDenis Plotnikov .args = "[-bcCfnquz] [-P pattern | -s source_file] off len", 1022797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1023797ac58cSKevin Wolf .help = write_help, 1024797ac58cSKevin Wolf }; 1025797ac58cSKevin Wolf 1026b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 1027797ac58cSKevin Wolf { 102850290c00SAlex Bennée struct timespec t1, t2; 1029093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 10304d731510SDenis Plotnikov bool Pflag = false, zflag = false, cflag = false, sflag = false; 1031770e0e0eSEric Blake int flags = 0; 1032b32d7a39SMax Reitz int c, cnt, ret; 1033797ac58cSKevin Wolf char *buf = NULL; 1034797ac58cSKevin Wolf int64_t offset; 10359b0beaf3SJohn Snow int64_t count; 1036797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 10379b0beaf3SJohn Snow int64_t total = 0; 1038797ac58cSKevin Wolf int pattern = 0xcd; 10394d731510SDenis Plotnikov const char *file_name = NULL; 1040797ac58cSKevin Wolf 10414d731510SDenis Plotnikov while ((c = getopt(argc, argv, "bcCfnpP:qs:uz")) != -1) { 1042797ac58cSKevin Wolf switch (c) { 1043797ac58cSKevin Wolf case 'b': 1044dc38852aSEric Blake bflag = true; 1045797ac58cSKevin Wolf break; 1046797ac58cSKevin Wolf case 'c': 1047dc38852aSEric Blake cflag = true; 1048797ac58cSKevin Wolf break; 1049797ac58cSKevin Wolf case 'C': 1050dc38852aSEric Blake Cflag = true; 1051797ac58cSKevin Wolf break; 1052770e0e0eSEric Blake case 'f': 1053770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1054770e0e0eSEric Blake break; 1055c6e3f520SKevin Wolf case 'n': 1056c6e3f520SKevin Wolf flags |= BDRV_REQ_NO_FALLBACK; 1057c6e3f520SKevin Wolf break; 1058797ac58cSKevin Wolf case 'p': 1059093ea232SEric Blake /* Ignored for backwards compatibility */ 1060797ac58cSKevin Wolf break; 1061797ac58cSKevin Wolf case 'P': 1062dc38852aSEric Blake Pflag = true; 1063797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1064797ac58cSKevin Wolf if (pattern < 0) { 1065b32d7a39SMax Reitz return -EINVAL; 1066797ac58cSKevin Wolf } 1067797ac58cSKevin Wolf break; 1068797ac58cSKevin Wolf case 'q': 1069dc38852aSEric Blake qflag = true; 1070797ac58cSKevin Wolf break; 10714d731510SDenis Plotnikov case 's': 10724d731510SDenis Plotnikov sflag = true; 10734d731510SDenis Plotnikov file_name = optarg; 10744d731510SDenis Plotnikov break; 1075c2e001ccSEric Blake case 'u': 1076c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1077c2e001ccSEric Blake break; 1078797ac58cSKevin Wolf case 'z': 1079dc38852aSEric Blake zflag = true; 1080797ac58cSKevin Wolf break; 1081797ac58cSKevin Wolf default: 1082b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1083b32d7a39SMax Reitz return -EINVAL; 1084797ac58cSKevin Wolf } 1085797ac58cSKevin Wolf } 1086797ac58cSKevin Wolf 1087797ac58cSKevin Wolf if (optind != argc - 2) { 1088b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1089b32d7a39SMax Reitz return -EINVAL; 1090797ac58cSKevin Wolf } 1091797ac58cSKevin Wolf 1092093ea232SEric Blake if (bflag && zflag) { 1093093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1094b32d7a39SMax Reitz return -EINVAL; 1095797ac58cSKevin Wolf } 1096797ac58cSKevin Wolf 1097770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1098770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1099b32d7a39SMax Reitz return -EINVAL; 1100770e0e0eSEric Blake } 1101770e0e0eSEric Blake 1102c6e3f520SKevin Wolf if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { 1103c6e3f520SKevin Wolf printf("-n requires -z to be specified\n"); 1104c6e3f520SKevin Wolf return -EINVAL; 1105c6e3f520SKevin Wolf } 1106c6e3f520SKevin Wolf 1107c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1108c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1109b32d7a39SMax Reitz return -EINVAL; 1110c2e001ccSEric Blake } 1111c2e001ccSEric Blake 11124d731510SDenis Plotnikov if (zflag + Pflag + sflag > 1) { 11134d731510SDenis Plotnikov printf("Only one of -z, -P, and -s " 11144d731510SDenis Plotnikov "can be specified at the same time\n"); 1115b32d7a39SMax Reitz return -EINVAL; 1116797ac58cSKevin Wolf } 1117797ac58cSKevin Wolf 1118797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1119797ac58cSKevin Wolf if (offset < 0) { 1120a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1121b32d7a39SMax Reitz return offset; 1122797ac58cSKevin Wolf } 1123797ac58cSKevin Wolf 1124797ac58cSKevin Wolf optind++; 1125797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1126797ac58cSKevin Wolf if (count < 0) { 1127a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1128b32d7a39SMax Reitz return count; 1129395aecd0SEric Blake } else if (count > BDRV_REQUEST_MAX_BYTES && 1130395aecd0SEric Blake !(flags & BDRV_REQ_NO_FALLBACK)) { 1131395aecd0SEric Blake printf("length cannot exceed %" PRIu64 " without -n, given %s\n", 11323026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1133b32d7a39SMax Reitz return -EINVAL; 1134797ac58cSKevin Wolf } 1135797ac58cSKevin Wolf 1136093ea232SEric Blake if (bflag || cflag) { 11371bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 11381bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1139797ac58cSKevin Wolf offset); 1140b32d7a39SMax Reitz return -EINVAL; 1141797ac58cSKevin Wolf } 1142797ac58cSKevin Wolf 11431bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 11441bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1145797ac58cSKevin Wolf count); 1146b32d7a39SMax Reitz return -EINVAL; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf } 1149797ac58cSKevin Wolf 1150797ac58cSKevin Wolf if (!zflag) { 11514d731510SDenis Plotnikov if (sflag) { 11524d731510SDenis Plotnikov buf = qemu_io_alloc_from_file(blk, count, file_name); 11534d731510SDenis Plotnikov if (!buf) { 11544d731510SDenis Plotnikov return -EINVAL; 11554d731510SDenis Plotnikov } 11564d731510SDenis Plotnikov } else { 11574c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1158797ac58cSKevin Wolf } 11594d731510SDenis Plotnikov } 1160797ac58cSKevin Wolf 116150290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 11627b3f9712SEric Blake if (bflag) { 1163b32d7a39SMax Reitz ret = do_save_vmstate(blk, buf, offset, count, &total); 1164797ac58cSKevin Wolf } else if (zflag) { 1165264dcbb2SPaolo Bonzini ret = do_pwrite_zeroes(blk, offset, count, flags, &total); 1166797ac58cSKevin Wolf } else if (cflag) { 1167b32d7a39SMax Reitz ret = do_write_compressed(blk, buf, offset, count, &total); 1168797ac58cSKevin Wolf } else { 1169b32d7a39SMax Reitz ret = do_pwrite(blk, buf, offset, count, flags, &total); 1170797ac58cSKevin Wolf } 117150290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1172797ac58cSKevin Wolf 1173b32d7a39SMax Reitz if (ret < 0) { 1174b32d7a39SMax Reitz printf("write failed: %s\n", strerror(-ret)); 1175797ac58cSKevin Wolf goto out; 1176797ac58cSKevin Wolf } 1177b32d7a39SMax Reitz cnt = ret; 1178b32d7a39SMax Reitz 1179b32d7a39SMax Reitz ret = 0; 1180797ac58cSKevin Wolf 1181797ac58cSKevin Wolf if (qflag) { 1182797ac58cSKevin Wolf goto out; 1183797ac58cSKevin Wolf } 1184797ac58cSKevin Wolf 1185797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1186797ac58cSKevin Wolf t2 = tsub(t2, t1); 1187797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1188797ac58cSKevin Wolf 1189797ac58cSKevin Wolf out: 1190797ac58cSKevin Wolf if (!zflag) { 1191797ac58cSKevin Wolf qemu_io_free(buf); 1192797ac58cSKevin Wolf } 1193b32d7a39SMax Reitz return ret; 1194797ac58cSKevin Wolf } 1195797ac58cSKevin Wolf 1196797ac58cSKevin Wolf static void 1197797ac58cSKevin Wolf writev_help(void) 1198797ac58cSKevin Wolf { 1199797ac58cSKevin Wolf printf( 1200797ac58cSKevin Wolf "\n" 1201797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1202797ac58cSKevin Wolf "\n" 1203797ac58cSKevin Wolf " Example:\n" 12046e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1205797ac58cSKevin Wolf "\n" 1206797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1207797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1208797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1209797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1210770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1211797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1212797ac58cSKevin Wolf "\n"); 1213797ac58cSKevin Wolf } 1214797ac58cSKevin Wolf 1215b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1216797ac58cSKevin Wolf 1217797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1218797ac58cSKevin Wolf .name = "writev", 1219797ac58cSKevin Wolf .cfunc = writev_f, 1220887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1221797ac58cSKevin Wolf .argmin = 2, 1222797ac58cSKevin Wolf .argmax = -1, 1223770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1224797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1225797ac58cSKevin Wolf .help = writev_help, 1226797ac58cSKevin Wolf }; 1227797ac58cSKevin Wolf 1228b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1229797ac58cSKevin Wolf { 123050290c00SAlex Bennée struct timespec t1, t2; 1231dc38852aSEric Blake bool Cflag = false, qflag = false; 1232770e0e0eSEric Blake int flags = 0; 1233b32d7a39SMax Reitz int c, cnt, ret; 1234797ac58cSKevin Wolf char *buf; 1235797ac58cSKevin Wolf int64_t offset; 1236797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1237797ac58cSKevin Wolf int total = 0; 1238797ac58cSKevin Wolf int nr_iov; 1239797ac58cSKevin Wolf int pattern = 0xcd; 1240797ac58cSKevin Wolf QEMUIOVector qiov; 1241797ac58cSKevin Wolf 12424ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1243797ac58cSKevin Wolf switch (c) { 1244797ac58cSKevin Wolf case 'C': 1245dc38852aSEric Blake Cflag = true; 1246797ac58cSKevin Wolf break; 1247770e0e0eSEric Blake case 'f': 1248770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1249770e0e0eSEric Blake break; 1250797ac58cSKevin Wolf case 'q': 1251dc38852aSEric Blake qflag = true; 1252797ac58cSKevin Wolf break; 1253797ac58cSKevin Wolf case 'P': 1254797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1255797ac58cSKevin Wolf if (pattern < 0) { 1256b32d7a39SMax Reitz return -EINVAL; 1257797ac58cSKevin Wolf } 1258797ac58cSKevin Wolf break; 1259797ac58cSKevin Wolf default: 1260b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1261b32d7a39SMax Reitz return -EINVAL; 1262797ac58cSKevin Wolf } 1263797ac58cSKevin Wolf } 1264797ac58cSKevin Wolf 1265797ac58cSKevin Wolf if (optind > argc - 2) { 1266b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1267b32d7a39SMax Reitz return -EINVAL; 1268797ac58cSKevin Wolf } 1269797ac58cSKevin Wolf 1270797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1271797ac58cSKevin Wolf if (offset < 0) { 1272a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1273b32d7a39SMax Reitz return offset; 1274797ac58cSKevin Wolf } 1275797ac58cSKevin Wolf optind++; 1276797ac58cSKevin Wolf 1277797ac58cSKevin Wolf nr_iov = argc - optind; 12784c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1279797ac58cSKevin Wolf if (buf == NULL) { 1280b32d7a39SMax Reitz return -EINVAL; 1281797ac58cSKevin Wolf } 1282797ac58cSKevin Wolf 128350290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1284b32d7a39SMax Reitz ret = do_aio_writev(blk, &qiov, offset, flags, &total); 128550290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1286797ac58cSKevin Wolf 1287b32d7a39SMax Reitz if (ret < 0) { 1288b32d7a39SMax Reitz printf("writev failed: %s\n", strerror(-ret)); 1289797ac58cSKevin Wolf goto out; 1290797ac58cSKevin Wolf } 1291b32d7a39SMax Reitz cnt = ret; 1292b32d7a39SMax Reitz 1293b32d7a39SMax Reitz ret = 0; 1294797ac58cSKevin Wolf 1295797ac58cSKevin Wolf if (qflag) { 1296797ac58cSKevin Wolf goto out; 1297797ac58cSKevin Wolf } 1298797ac58cSKevin Wolf 1299797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1300797ac58cSKevin Wolf t2 = tsub(t2, t1); 1301797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1302797ac58cSKevin Wolf out: 1303797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1304797ac58cSKevin Wolf qemu_io_free(buf); 1305b32d7a39SMax Reitz return ret; 1306797ac58cSKevin Wolf } 1307797ac58cSKevin Wolf 1308797ac58cSKevin Wolf struct aio_ctx { 13094c7b7e9bSMax Reitz BlockBackend *blk; 1310797ac58cSKevin Wolf QEMUIOVector qiov; 1311797ac58cSKevin Wolf int64_t offset; 1312797ac58cSKevin Wolf char *buf; 1313dc38852aSEric Blake bool qflag; 1314dc38852aSEric Blake bool vflag; 1315dc38852aSEric Blake bool Cflag; 1316dc38852aSEric Blake bool Pflag; 1317dc38852aSEric Blake bool zflag; 1318a91f9584SFam Zheng BlockAcctCookie acct; 1319797ac58cSKevin Wolf int pattern; 132050290c00SAlex Bennée struct timespec t1; 1321797ac58cSKevin Wolf }; 1322797ac58cSKevin Wolf 1323797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1324797ac58cSKevin Wolf { 1325797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 132650290c00SAlex Bennée struct timespec t2; 1327797ac58cSKevin Wolf 132850290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1329797ac58cSKevin Wolf 1330797ac58cSKevin Wolf 1331797ac58cSKevin Wolf if (ret < 0) { 1332797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1333556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1334797ac58cSKevin Wolf goto out; 1335797ac58cSKevin Wolf } 1336797ac58cSKevin Wolf 13374c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1338a91f9584SFam Zheng 1339797ac58cSKevin Wolf if (ctx->qflag) { 1340797ac58cSKevin Wolf goto out; 1341797ac58cSKevin Wolf } 1342797ac58cSKevin Wolf 1343797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1344797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1345797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1346797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1347797ac58cSKevin Wolf out: 13485ceb7765SKevin Wolf if (!ctx->zflag) { 1349797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1350797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 13515ceb7765SKevin Wolf } 1352797ac58cSKevin Wolf g_free(ctx); 1353797ac58cSKevin Wolf } 1354797ac58cSKevin Wolf 1355797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1356797ac58cSKevin Wolf { 1357797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 135850290c00SAlex Bennée struct timespec t2; 1359797ac58cSKevin Wolf 136050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1361797ac58cSKevin Wolf 1362797ac58cSKevin Wolf if (ret < 0) { 1363797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1364556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1365797ac58cSKevin Wolf goto out; 1366797ac58cSKevin Wolf } 1367797ac58cSKevin Wolf 1368797ac58cSKevin Wolf if (ctx->Pflag) { 1369797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1370797ac58cSKevin Wolf 1371797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1372797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1373797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1374cf67b692SStefan Weil PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); 1375797ac58cSKevin Wolf } 1376797ac58cSKevin Wolf g_free(cmp_buf); 1377797ac58cSKevin Wolf } 1378797ac58cSKevin Wolf 13794c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1380a91f9584SFam Zheng 1381797ac58cSKevin Wolf if (ctx->qflag) { 1382797ac58cSKevin Wolf goto out; 1383797ac58cSKevin Wolf } 1384797ac58cSKevin Wolf 1385797ac58cSKevin Wolf if (ctx->vflag) { 1386797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1387797ac58cSKevin Wolf } 1388797ac58cSKevin Wolf 1389797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1390797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1391797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1392797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1393797ac58cSKevin Wolf out: 1394797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1395797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1396797ac58cSKevin Wolf g_free(ctx); 1397797ac58cSKevin Wolf } 1398797ac58cSKevin Wolf 1399797ac58cSKevin Wolf static void aio_read_help(void) 1400797ac58cSKevin Wolf { 1401797ac58cSKevin Wolf printf( 1402797ac58cSKevin Wolf "\n" 1403797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1404797ac58cSKevin Wolf "\n" 1405797ac58cSKevin Wolf " Example:\n" 1406797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1407797ac58cSKevin Wolf "\n" 1408797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1409797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1410797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1411797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1412b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1413b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1414b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1415797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1416797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 141737546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1418797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1419797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1420797ac58cSKevin Wolf "\n"); 1421797ac58cSKevin Wolf } 1422797ac58cSKevin Wolf 1423b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1424797ac58cSKevin Wolf 1425797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1426797ac58cSKevin Wolf .name = "aio_read", 1427797ac58cSKevin Wolf .cfunc = aio_read_f, 1428797ac58cSKevin Wolf .argmin = 2, 1429797ac58cSKevin Wolf .argmax = -1, 143037546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1431797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1432797ac58cSKevin Wolf .help = aio_read_help, 1433797ac58cSKevin Wolf }; 1434797ac58cSKevin Wolf 1435b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1436797ac58cSKevin Wolf { 1437797ac58cSKevin Wolf int nr_iov, c; 1438797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1439797ac58cSKevin Wolf 14404c7b7e9bSMax Reitz ctx->blk = blk; 144137546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1442797ac58cSKevin Wolf switch (c) { 1443797ac58cSKevin Wolf case 'C': 1444dc38852aSEric Blake ctx->Cflag = true; 1445797ac58cSKevin Wolf break; 1446797ac58cSKevin Wolf case 'P': 1447dc38852aSEric Blake ctx->Pflag = true; 1448797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1449797ac58cSKevin Wolf if (ctx->pattern < 0) { 1450797ac58cSKevin Wolf g_free(ctx); 1451b32d7a39SMax Reitz return -EINVAL; 1452797ac58cSKevin Wolf } 1453797ac58cSKevin Wolf break; 145437546ff2SEric Blake case 'i': 145537546ff2SEric Blake printf("injecting invalid read request\n"); 145637546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 145737546ff2SEric Blake g_free(ctx); 1458b32d7a39SMax Reitz return 0; 1459797ac58cSKevin Wolf case 'q': 1460dc38852aSEric Blake ctx->qflag = true; 1461797ac58cSKevin Wolf break; 1462797ac58cSKevin Wolf case 'v': 1463dc38852aSEric Blake ctx->vflag = true; 1464797ac58cSKevin Wolf break; 1465797ac58cSKevin Wolf default: 1466797ac58cSKevin Wolf g_free(ctx); 1467b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1468b32d7a39SMax Reitz return -EINVAL; 1469797ac58cSKevin Wolf } 1470797ac58cSKevin Wolf } 1471797ac58cSKevin Wolf 1472797ac58cSKevin Wolf if (optind > argc - 2) { 1473797ac58cSKevin Wolf g_free(ctx); 1474b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1475b32d7a39SMax Reitz return -EINVAL; 1476797ac58cSKevin Wolf } 1477797ac58cSKevin Wolf 1478797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1479797ac58cSKevin Wolf if (ctx->offset < 0) { 1480b32d7a39SMax Reitz int ret = ctx->offset; 1481b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1482797ac58cSKevin Wolf g_free(ctx); 1483b32d7a39SMax Reitz return ret; 1484797ac58cSKevin Wolf } 1485797ac58cSKevin Wolf optind++; 1486797ac58cSKevin Wolf 1487797ac58cSKevin Wolf nr_iov = argc - optind; 14884c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1489797ac58cSKevin Wolf if (ctx->buf == NULL) { 1490556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1491797ac58cSKevin Wolf g_free(ctx); 1492b32d7a39SMax Reitz return -EINVAL; 1493797ac58cSKevin Wolf } 1494797ac58cSKevin Wolf 149550290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 14964c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14974c7b7e9bSMax Reitz BLOCK_ACCT_READ); 14987b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1499b32d7a39SMax Reitz return 0; 1500797ac58cSKevin Wolf } 1501797ac58cSKevin Wolf 1502797ac58cSKevin Wolf static void aio_write_help(void) 1503797ac58cSKevin Wolf { 1504797ac58cSKevin Wolf printf( 1505797ac58cSKevin Wolf "\n" 1506797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1507797ac58cSKevin Wolf " from multiple buffers\n" 1508797ac58cSKevin Wolf "\n" 1509797ac58cSKevin Wolf " Example:\n" 1510797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1511797ac58cSKevin Wolf "\n" 1512797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1513797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1514797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1515797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1516b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1517b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1518b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1519797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1520797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1521770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 152237546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1523797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1524c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1525d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1526797ac58cSKevin Wolf "\n"); 1527797ac58cSKevin Wolf } 1528797ac58cSKevin Wolf 1529b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1530797ac58cSKevin Wolf 1531797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1532797ac58cSKevin Wolf .name = "aio_write", 1533797ac58cSKevin Wolf .cfunc = aio_write_f, 1534887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1535797ac58cSKevin Wolf .argmin = 2, 1536797ac58cSKevin Wolf .argmax = -1, 153737546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1538797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1539797ac58cSKevin Wolf .help = aio_write_help, 1540797ac58cSKevin Wolf }; 1541797ac58cSKevin Wolf 1542b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1543797ac58cSKevin Wolf { 1544797ac58cSKevin Wolf int nr_iov, c; 1545797ac58cSKevin Wolf int pattern = 0xcd; 1546797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1547770e0e0eSEric Blake int flags = 0; 1548797ac58cSKevin Wolf 15494c7b7e9bSMax Reitz ctx->blk = blk; 155037546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1551797ac58cSKevin Wolf switch (c) { 1552797ac58cSKevin Wolf case 'C': 1553dc38852aSEric Blake ctx->Cflag = true; 1554797ac58cSKevin Wolf break; 1555770e0e0eSEric Blake case 'f': 1556770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1557770e0e0eSEric Blake break; 1558797ac58cSKevin Wolf case 'q': 1559dc38852aSEric Blake ctx->qflag = true; 1560797ac58cSKevin Wolf break; 1561c2e001ccSEric Blake case 'u': 1562c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1563c2e001ccSEric Blake break; 1564797ac58cSKevin Wolf case 'P': 1565797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1566797ac58cSKevin Wolf if (pattern < 0) { 1567797ac58cSKevin Wolf g_free(ctx); 1568b32d7a39SMax Reitz return -EINVAL; 1569797ac58cSKevin Wolf } 1570797ac58cSKevin Wolf break; 157137546ff2SEric Blake case 'i': 157237546ff2SEric Blake printf("injecting invalid write request\n"); 157337546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 157437546ff2SEric Blake g_free(ctx); 1575b32d7a39SMax Reitz return 0; 15765ceb7765SKevin Wolf case 'z': 1577dc38852aSEric Blake ctx->zflag = true; 15785ceb7765SKevin Wolf break; 1579797ac58cSKevin Wolf default: 1580797ac58cSKevin Wolf g_free(ctx); 1581b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1582b32d7a39SMax Reitz return -EINVAL; 1583797ac58cSKevin Wolf } 1584797ac58cSKevin Wolf } 1585797ac58cSKevin Wolf 1586797ac58cSKevin Wolf if (optind > argc - 2) { 1587797ac58cSKevin Wolf g_free(ctx); 1588b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1589b32d7a39SMax Reitz return -EINVAL; 1590797ac58cSKevin Wolf } 1591797ac58cSKevin Wolf 15925ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 15935ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 15945ceb7765SKevin Wolf g_free(ctx); 1595b32d7a39SMax Reitz return -EINVAL; 15965ceb7765SKevin Wolf } 15975ceb7765SKevin Wolf 1598c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1599c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 16004ca1d340SEric Blake g_free(ctx); 1601b32d7a39SMax Reitz return -EINVAL; 1602c2e001ccSEric Blake } 1603c2e001ccSEric Blake 16045ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 16055ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 16065ceb7765SKevin Wolf g_free(ctx); 1607b32d7a39SMax Reitz return -EINVAL; 16085ceb7765SKevin Wolf } 16095ceb7765SKevin Wolf 1610797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1611797ac58cSKevin Wolf if (ctx->offset < 0) { 1612b32d7a39SMax Reitz int ret = ctx->offset; 1613b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1614797ac58cSKevin Wolf g_free(ctx); 1615b32d7a39SMax Reitz return ret; 1616797ac58cSKevin Wolf } 1617797ac58cSKevin Wolf optind++; 1618797ac58cSKevin Wolf 16195ceb7765SKevin Wolf if (ctx->zflag) { 16205ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 16215ceb7765SKevin Wolf if (count < 0) { 16225ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 16230e01b76eSKevin Wolf g_free(ctx); 1624b32d7a39SMax Reitz return count; 16255ceb7765SKevin Wolf } 16265ceb7765SKevin Wolf 16275ceb7765SKevin Wolf ctx->qiov.size = count; 1628d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1629770e0e0eSEric Blake ctx); 16305ceb7765SKevin Wolf } else { 1631797ac58cSKevin Wolf nr_iov = argc - optind; 16325ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 16335ceb7765SKevin Wolf pattern); 1634797ac58cSKevin Wolf if (ctx->buf == NULL) { 1635556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1636797ac58cSKevin Wolf g_free(ctx); 1637b32d7a39SMax Reitz return -EINVAL; 1638797ac58cSKevin Wolf } 1639797ac58cSKevin Wolf 164050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 16414c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 16424c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 16435ceb7765SKevin Wolf 1644770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1645770e0e0eSEric Blake ctx); 16465ceb7765SKevin Wolf } 1647b32d7a39SMax Reitz 1648b32d7a39SMax Reitz return 0; 1649797ac58cSKevin Wolf } 1650797ac58cSKevin Wolf 1651b32d7a39SMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1652797ac58cSKevin Wolf { 1653556c2b60SAlberto Garcia BlockAcctCookie cookie; 1654556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 16554c7b7e9bSMax Reitz blk_drain_all(); 1656556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1657b32d7a39SMax Reitz return 0; 1658797ac58cSKevin Wolf } 1659797ac58cSKevin Wolf 1660797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1661797ac58cSKevin Wolf .name = "aio_flush", 1662797ac58cSKevin Wolf .cfunc = aio_flush_f, 1663797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1664797ac58cSKevin Wolf }; 1665797ac58cSKevin Wolf 1666b32d7a39SMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1667797ac58cSKevin Wolf { 1668b32d7a39SMax Reitz return blk_flush(blk); 1669797ac58cSKevin Wolf } 1670797ac58cSKevin Wolf 1671797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1672797ac58cSKevin Wolf .name = "flush", 1673797ac58cSKevin Wolf .altname = "f", 1674797ac58cSKevin Wolf .cfunc = flush_f, 1675797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1676797ac58cSKevin Wolf }; 1677797ac58cSKevin Wolf 167842ba0225SVladimir Sementsov-Ogievskiy static int truncate_f(BlockBackend *blk, int argc, char **argv); 167942ba0225SVladimir Sementsov-Ogievskiy static const cmdinfo_t truncate_cmd = { 168042ba0225SVladimir Sementsov-Ogievskiy .name = "truncate", 168142ba0225SVladimir Sementsov-Ogievskiy .altname = "t", 168242ba0225SVladimir Sementsov-Ogievskiy .cfunc = truncate_f, 168342ba0225SVladimir Sementsov-Ogievskiy .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 168442ba0225SVladimir Sementsov-Ogievskiy .argmin = 1, 168542ba0225SVladimir Sementsov-Ogievskiy .argmax = 3, 168642ba0225SVladimir Sementsov-Ogievskiy .args = "[-m prealloc_mode] off", 168742ba0225SVladimir Sementsov-Ogievskiy .oneline = "truncates the current file at the given offset", 168842ba0225SVladimir Sementsov-Ogievskiy }; 168942ba0225SVladimir Sementsov-Ogievskiy 1690b32d7a39SMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1691797ac58cSKevin Wolf { 1692ed3d2ec9SMax Reitz Error *local_err = NULL; 1693797ac58cSKevin Wolf int64_t offset; 169442ba0225SVladimir Sementsov-Ogievskiy int c, ret; 169542ba0225SVladimir Sementsov-Ogievskiy PreallocMode prealloc = PREALLOC_MODE_OFF; 1696797ac58cSKevin Wolf 169742ba0225SVladimir Sementsov-Ogievskiy while ((c = getopt(argc, argv, "m:")) != -1) { 169842ba0225SVladimir Sementsov-Ogievskiy switch (c) { 169942ba0225SVladimir Sementsov-Ogievskiy case 'm': 170042ba0225SVladimir Sementsov-Ogievskiy prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, 170142ba0225SVladimir Sementsov-Ogievskiy PREALLOC_MODE__MAX, NULL); 170242ba0225SVladimir Sementsov-Ogievskiy if (prealloc == PREALLOC_MODE__MAX) { 170342ba0225SVladimir Sementsov-Ogievskiy error_report("Invalid preallocation mode '%s'", optarg); 170442ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 170542ba0225SVladimir Sementsov-Ogievskiy } 170642ba0225SVladimir Sementsov-Ogievskiy break; 170742ba0225SVladimir Sementsov-Ogievskiy default: 170842ba0225SVladimir Sementsov-Ogievskiy qemuio_command_usage(&truncate_cmd); 170942ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 171042ba0225SVladimir Sementsov-Ogievskiy } 171142ba0225SVladimir Sementsov-Ogievskiy } 171242ba0225SVladimir Sementsov-Ogievskiy 171342ba0225SVladimir Sementsov-Ogievskiy offset = cvtnum(argv[optind]); 1714797ac58cSKevin Wolf if (offset < 0) { 1715a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1716b32d7a39SMax Reitz return offset; 1717797ac58cSKevin Wolf } 1718797ac58cSKevin Wolf 1719e8d04f92SMax Reitz /* 1720e8d04f92SMax Reitz * qemu-io is a debugging tool, so let us be strict here and pass 1721e8d04f92SMax Reitz * exact=true. It is better to err on the "emit more errors" side 1722e8d04f92SMax Reitz * than to be overly permissive. 1723e8d04f92SMax Reitz */ 172442ba0225SVladimir Sementsov-Ogievskiy ret = blk_truncate(blk, offset, false, prealloc, 0, &local_err); 1725797ac58cSKevin Wolf if (ret < 0) { 1726ed3d2ec9SMax Reitz error_report_err(local_err); 1727b32d7a39SMax Reitz return ret; 1728797ac58cSKevin Wolf } 1729b32d7a39SMax Reitz 1730b32d7a39SMax Reitz return 0; 1731797ac58cSKevin Wolf } 1732797ac58cSKevin Wolf 1733b32d7a39SMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1734797ac58cSKevin Wolf { 1735797ac58cSKevin Wolf int64_t size; 1736797ac58cSKevin Wolf char s1[64]; 1737797ac58cSKevin Wolf 17384c7b7e9bSMax Reitz size = blk_getlength(blk); 1739797ac58cSKevin Wolf if (size < 0) { 1740797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1741b32d7a39SMax Reitz return size; 1742797ac58cSKevin Wolf } 1743797ac58cSKevin Wolf 1744797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1745797ac58cSKevin Wolf printf("%s\n", s1); 1746b32d7a39SMax Reitz return 0; 1747797ac58cSKevin Wolf } 1748797ac58cSKevin Wolf 1749797ac58cSKevin Wolf 1750797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1751797ac58cSKevin Wolf .name = "length", 1752797ac58cSKevin Wolf .altname = "l", 1753797ac58cSKevin Wolf .cfunc = length_f, 1754797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1755797ac58cSKevin Wolf }; 1756797ac58cSKevin Wolf 1757797ac58cSKevin Wolf 1758b32d7a39SMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1759797ac58cSKevin Wolf { 17604c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1761797ac58cSKevin Wolf BlockDriverInfo bdi; 1762a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 17631bf6e9caSAndrey Shinkevich Error *local_err = NULL; 1764797ac58cSKevin Wolf char s1[64], s2[64]; 1765797ac58cSKevin Wolf int ret; 1766797ac58cSKevin Wolf 1767797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1768797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1769797ac58cSKevin Wolf } 1770797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1771797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1772797ac58cSKevin Wolf } 1773797ac58cSKevin Wolf 1774797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1775797ac58cSKevin Wolf if (ret) { 1776b32d7a39SMax Reitz return ret; 1777797ac58cSKevin Wolf } 1778797ac58cSKevin Wolf 1779797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1780797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1781797ac58cSKevin Wolf 1782797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1783797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1784797ac58cSKevin Wolf 17851bf6e9caSAndrey Shinkevich spec_info = bdrv_get_specific_info(bs, &local_err); 17861bf6e9caSAndrey Shinkevich if (local_err) { 17871bf6e9caSAndrey Shinkevich error_report_err(local_err); 17881bf6e9caSAndrey Shinkevich return -EIO; 17891bf6e9caSAndrey Shinkevich } 1790a8d8ecb7SMax Reitz if (spec_info) { 17913716470bSHanna Reitz bdrv_image_info_specific_dump(spec_info, 17923716470bSHanna Reitz "Format specific information:\n"); 1793a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1794a8d8ecb7SMax Reitz } 1795b32d7a39SMax Reitz 1796b32d7a39SMax Reitz return 0; 1797797ac58cSKevin Wolf } 1798797ac58cSKevin Wolf 1799797ac58cSKevin Wolf 1800797ac58cSKevin Wolf 1801797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1802797ac58cSKevin Wolf .name = "info", 1803797ac58cSKevin Wolf .altname = "i", 1804797ac58cSKevin Wolf .cfunc = info_f, 1805797ac58cSKevin Wolf .oneline = "prints information about the current file", 1806797ac58cSKevin Wolf }; 1807797ac58cSKevin Wolf 1808797ac58cSKevin Wolf static void discard_help(void) 1809797ac58cSKevin Wolf { 1810797ac58cSKevin Wolf printf( 1811797ac58cSKevin Wolf "\n" 1812797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1813797ac58cSKevin Wolf "\n" 1814797ac58cSKevin Wolf " Example:\n" 1815797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1816797ac58cSKevin Wolf "\n" 1817797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1818797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1819797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1820797ac58cSKevin Wolf "\n"); 1821797ac58cSKevin Wolf } 1822797ac58cSKevin Wolf 1823b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1824797ac58cSKevin Wolf 1825797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1826797ac58cSKevin Wolf .name = "discard", 1827797ac58cSKevin Wolf .altname = "d", 1828797ac58cSKevin Wolf .cfunc = discard_f, 1829887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1830797ac58cSKevin Wolf .argmin = 2, 1831797ac58cSKevin Wolf .argmax = -1, 1832797ac58cSKevin Wolf .args = "[-Cq] off len", 1833797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1834797ac58cSKevin Wolf .help = discard_help, 1835797ac58cSKevin Wolf }; 1836797ac58cSKevin Wolf 1837b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1838797ac58cSKevin Wolf { 183950290c00SAlex Bennée struct timespec t1, t2; 1840dc38852aSEric Blake bool Cflag = false, qflag = false; 1841797ac58cSKevin Wolf int c, ret; 1842f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1843797ac58cSKevin Wolf 1844b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1845797ac58cSKevin Wolf switch (c) { 1846797ac58cSKevin Wolf case 'C': 1847dc38852aSEric Blake Cflag = true; 1848797ac58cSKevin Wolf break; 1849797ac58cSKevin Wolf case 'q': 1850dc38852aSEric Blake qflag = true; 1851797ac58cSKevin Wolf break; 1852797ac58cSKevin Wolf default: 1853b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1854b32d7a39SMax Reitz return -EINVAL; 1855797ac58cSKevin Wolf } 1856797ac58cSKevin Wolf } 1857797ac58cSKevin Wolf 1858797ac58cSKevin Wolf if (optind != argc - 2) { 1859b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1860b32d7a39SMax Reitz return -EINVAL; 1861797ac58cSKevin Wolf } 1862797ac58cSKevin Wolf 1863797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1864797ac58cSKevin Wolf if (offset < 0) { 1865a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1866b32d7a39SMax Reitz return offset; 1867797ac58cSKevin Wolf } 1868797ac58cSKevin Wolf 1869797ac58cSKevin Wolf optind++; 1870f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1871f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1872f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1873b32d7a39SMax Reitz return bytes; 187441ae31e3SAlberto Garcia } else if (bytes > BDRV_REQUEST_MAX_BYTES) { 18759b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 187641ae31e3SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1877b32d7a39SMax Reitz return -EINVAL; 1878797ac58cSKevin Wolf } 1879797ac58cSKevin Wolf 188050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1881f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 188250290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1883797ac58cSKevin Wolf 1884797ac58cSKevin Wolf if (ret < 0) { 1885797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1886b32d7a39SMax Reitz return ret; 1887797ac58cSKevin Wolf } 1888797ac58cSKevin Wolf 1889797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1890797ac58cSKevin Wolf if (!qflag) { 1891797ac58cSKevin Wolf t2 = tsub(t2, t1); 1892f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1893797ac58cSKevin Wolf } 1894b32d7a39SMax Reitz 1895b32d7a39SMax Reitz return 0; 1896797ac58cSKevin Wolf } 1897797ac58cSKevin Wolf 1898b32d7a39SMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1899797ac58cSKevin Wolf { 19004c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1901d6a644bbSEric Blake int64_t offset, start, remaining, count; 1902797ac58cSKevin Wolf char s1[64]; 1903d6a644bbSEric Blake int ret; 1904d6a644bbSEric Blake int64_t num, sum_alloc; 1905797ac58cSKevin Wolf 1906d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1907797ac58cSKevin Wolf if (offset < 0) { 1908a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1909b32d7a39SMax Reitz return offset; 1910797ac58cSKevin Wolf } 1911797ac58cSKevin Wolf 1912797ac58cSKevin Wolf if (argc == 3) { 19134401fdc7SEric Blake count = cvtnum(argv[2]); 19144401fdc7SEric Blake if (count < 0) { 19154401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1916b32d7a39SMax Reitz return count; 1917797ac58cSKevin Wolf } 1918797ac58cSKevin Wolf } else { 19194401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1920797ac58cSKevin Wolf } 1921797ac58cSKevin Wolf 1922d6a644bbSEric Blake remaining = count; 1923797ac58cSKevin Wolf sum_alloc = 0; 1924797ac58cSKevin Wolf while (remaining) { 1925d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1926d663640cSPaolo Bonzini if (ret < 0) { 1927d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1928b32d7a39SMax Reitz return ret; 1929d663640cSPaolo Bonzini } 1930d6a644bbSEric Blake offset += num; 1931797ac58cSKevin Wolf remaining -= num; 1932797ac58cSKevin Wolf if (ret) { 1933797ac58cSKevin Wolf sum_alloc += num; 1934797ac58cSKevin Wolf } 1935797ac58cSKevin Wolf if (num == 0) { 1936d6a644bbSEric Blake count -= remaining; 1937797ac58cSKevin Wolf remaining = 0; 1938797ac58cSKevin Wolf } 1939797ac58cSKevin Wolf } 1940797ac58cSKevin Wolf 1941d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1942797ac58cSKevin Wolf 19434401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1944d6a644bbSEric Blake sum_alloc, count, s1); 1945b32d7a39SMax Reitz return 0; 1946797ac58cSKevin Wolf } 1947797ac58cSKevin Wolf 1948797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1949797ac58cSKevin Wolf .name = "alloc", 1950797ac58cSKevin Wolf .altname = "a", 1951797ac58cSKevin Wolf .argmin = 1, 1952797ac58cSKevin Wolf .argmax = 2, 1953797ac58cSKevin Wolf .cfunc = alloc_f, 19544401fdc7SEric Blake .args = "offset [count]", 19554401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1956797ac58cSKevin Wolf }; 1957797ac58cSKevin Wolf 1958797ac58cSKevin Wolf 1959d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1960d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1961797ac58cSKevin Wolf { 1962d6a644bbSEric Blake int64_t num; 1963797ac58cSKevin Wolf int ret, firstret; 1964797ac58cSKevin Wolf 1965087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 1966797ac58cSKevin Wolf if (ret < 0) { 1967797ac58cSKevin Wolf return ret; 1968797ac58cSKevin Wolf } 1969797ac58cSKevin Wolf 1970797ac58cSKevin Wolf firstret = ret; 1971797ac58cSKevin Wolf *pnum = num; 1972797ac58cSKevin Wolf 1973d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1974d6a644bbSEric Blake offset += num; 1975d6a644bbSEric Blake bytes -= num; 1976797ac58cSKevin Wolf 1977087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 19784b25bbc4SMax Reitz if (ret == firstret && num) { 1979797ac58cSKevin Wolf *pnum += num; 1980797ac58cSKevin Wolf } else { 1981797ac58cSKevin Wolf break; 1982797ac58cSKevin Wolf } 1983797ac58cSKevin Wolf } 1984797ac58cSKevin Wolf 1985797ac58cSKevin Wolf return firstret; 1986797ac58cSKevin Wolf } 1987797ac58cSKevin Wolf 1988b32d7a39SMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1989797ac58cSKevin Wolf { 1990d6a644bbSEric Blake int64_t offset, bytes; 19916f3c90afSEric Blake char s1[64], s2[64]; 1992797ac58cSKevin Wolf int64_t num; 1993797ac58cSKevin Wolf int ret; 1994797ac58cSKevin Wolf const char *retstr; 1995797ac58cSKevin Wolf 1996797ac58cSKevin Wolf offset = 0; 1997d6a644bbSEric Blake bytes = blk_getlength(blk); 1998d6a644bbSEric Blake if (bytes < 0) { 1999d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 2000b32d7a39SMax Reitz return bytes; 20014c7b7e9bSMax Reitz } 20024c7b7e9bSMax Reitz 2003d6a644bbSEric Blake while (bytes) { 2004d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 2005797ac58cSKevin Wolf if (ret < 0) { 2006797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 2007b32d7a39SMax Reitz return ret; 20084b25bbc4SMax Reitz } else if (!num) { 20094b25bbc4SMax Reitz error_report("Unexpected end of image"); 2010b32d7a39SMax Reitz return -EIO; 2011797ac58cSKevin Wolf } 2012797ac58cSKevin Wolf 2013797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 2014d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 2015d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 20166f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 2017d6a644bbSEric Blake s1, num, retstr, s2, offset); 2018797ac58cSKevin Wolf 2019797ac58cSKevin Wolf offset += num; 2020d6a644bbSEric Blake bytes -= num; 2021d6a644bbSEric Blake } 2022b32d7a39SMax Reitz 2023b32d7a39SMax Reitz return 0; 2024797ac58cSKevin Wolf } 2025797ac58cSKevin Wolf 2026797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 2027797ac58cSKevin Wolf .name = "map", 2028797ac58cSKevin Wolf .argmin = 0, 2029797ac58cSKevin Wolf .argmax = 0, 2030797ac58cSKevin Wolf .cfunc = map_f, 2031797ac58cSKevin Wolf .args = "", 2032797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 2033797ac58cSKevin Wolf }; 2034797ac58cSKevin Wolf 20355bbd2e59SKevin Wolf static void reopen_help(void) 20365bbd2e59SKevin Wolf { 20375bbd2e59SKevin Wolf printf( 20385bbd2e59SKevin Wolf "\n" 20395bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 20405bbd2e59SKevin Wolf "\n" 20415bbd2e59SKevin Wolf " Example:\n" 20425bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 20435bbd2e59SKevin Wolf "\n" 20445bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 2045ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 20465bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 20475bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 20485bbd2e59SKevin Wolf "\n"); 20495bbd2e59SKevin Wolf } 20505bbd2e59SKevin Wolf 2051b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv); 20525bbd2e59SKevin Wolf 20535bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 20545bbd2e59SKevin Wolf .name = "reopen", 20555bbd2e59SKevin Wolf .merge_lists = true, 20565bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 20575bbd2e59SKevin Wolf .desc = { 20585bbd2e59SKevin Wolf /* no elements => accept any params */ 20595bbd2e59SKevin Wolf { /* end of list */ } 20605bbd2e59SKevin Wolf }, 20615bbd2e59SKevin Wolf }; 20625bbd2e59SKevin Wolf 20635bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 20645bbd2e59SKevin Wolf .name = "reopen", 20655bbd2e59SKevin Wolf .argmin = 0, 20665bbd2e59SKevin Wolf .argmax = -1, 20675bbd2e59SKevin Wolf .cfunc = reopen_f, 2068ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 20695bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 20705bbd2e59SKevin Wolf .help = reopen_help, 20715bbd2e59SKevin Wolf }; 20725bbd2e59SKevin Wolf 2073b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv) 20745bbd2e59SKevin Wolf { 20755bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 20765bbd2e59SKevin Wolf QemuOpts *qopts; 20775bbd2e59SKevin Wolf QDict *opts; 20785bbd2e59SKevin Wolf int c; 20795bbd2e59SKevin Wolf int flags = bs->open_flags; 208019dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 2081ea92203cSKevin Wolf bool has_rw_option = false; 2082dc900c35SAlberto Garcia bool has_cache_option = false; 20835bbd2e59SKevin Wolf Error *local_err = NULL; 20845bbd2e59SKevin Wolf 2085ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 20865bbd2e59SKevin Wolf switch (c) { 20875bbd2e59SKevin Wolf case 'c': 208819dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 20895bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2090b32d7a39SMax Reitz return -EINVAL; 20915bbd2e59SKevin Wolf } 2092dc900c35SAlberto Garcia has_cache_option = true; 20935bbd2e59SKevin Wolf break; 20945bbd2e59SKevin Wolf case 'o': 20955bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 20965bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2097b32d7a39SMax Reitz return -EINVAL; 20985bbd2e59SKevin Wolf } 20995bbd2e59SKevin Wolf break; 21005bbd2e59SKevin Wolf case 'r': 2101ea92203cSKevin Wolf if (has_rw_option) { 2102ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2103b32d7a39SMax Reitz return -EINVAL; 2104ea92203cSKevin Wolf } 21055bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2106ea92203cSKevin Wolf has_rw_option = true; 2107ea92203cSKevin Wolf break; 2108ea92203cSKevin Wolf case 'w': 2109ea92203cSKevin Wolf if (has_rw_option) { 2110ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2111b32d7a39SMax Reitz return -EINVAL; 2112ea92203cSKevin Wolf } 2113ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 2114ea92203cSKevin Wolf has_rw_option = true; 21155bbd2e59SKevin Wolf break; 21165bbd2e59SKevin Wolf default: 21175bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2118b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2119b32d7a39SMax Reitz return -EINVAL; 21205bbd2e59SKevin Wolf } 21215bbd2e59SKevin Wolf } 21225bbd2e59SKevin Wolf 21235bbd2e59SKevin Wolf if (optind != argc) { 21245bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2125b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2126b32d7a39SMax Reitz return -EINVAL; 21275bbd2e59SKevin Wolf } 21285bbd2e59SKevin Wolf 2129a8003ec4SAlberto Garcia if (!writethrough != blk_enable_write_cache(blk) && 213019dbecdcSKevin Wolf blk_get_attached_dev(blk)) 213119dbecdcSKevin Wolf { 213219dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 213319dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 2134b32d7a39SMax Reitz return -EBUSY; 213519dbecdcSKevin Wolf } 213619dbecdcSKevin Wolf 2137f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2138f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2139f3adefb2SKevin Wolf 2140f3adefb2SKevin Wolf bdrv_drain(bs); 2141f3adefb2SKevin Wolf 2142f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2143f3adefb2SKevin Wolf blk_set_perm(blk, 2144f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2145f3adefb2SKevin Wolf orig_shared_perm, 2146f3adefb2SKevin Wolf &error_abort); 2147f3adefb2SKevin Wolf } 2148f3adefb2SKevin Wolf 21495bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2150dc900c35SAlberto Garcia opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); 21515bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21525bbd2e59SKevin Wolf 2153dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { 2154dc900c35SAlberto Garcia if (has_rw_option) { 2155dc900c35SAlberto Garcia error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); 2156dc900c35SAlberto Garcia qobject_unref(opts); 2157dc900c35SAlberto Garcia return -EINVAL; 2158dc900c35SAlberto Garcia } 2159dc900c35SAlberto Garcia } else { 2160dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); 2161dc900c35SAlberto Garcia } 2162dc900c35SAlberto Garcia 2163dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || 2164dc900c35SAlberto Garcia qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { 2165dc900c35SAlberto Garcia if (has_cache_option) { 2166dc900c35SAlberto Garcia error_report("Cannot set both -c and the cache options"); 2167dc900c35SAlberto Garcia qobject_unref(opts); 2168dc900c35SAlberto Garcia return -EINVAL; 2169dc900c35SAlberto Garcia } 2170dc900c35SAlberto Garcia } else { 2171dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); 2172dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); 2173dc900c35SAlberto Garcia } 2174dc900c35SAlberto Garcia 21756cf42ca2SKevin Wolf bdrv_reopen(bs, opts, true, &local_err); 21761a63a907SKevin Wolf 21775bbd2e59SKevin Wolf if (local_err) { 21785bbd2e59SKevin Wolf error_report_err(local_err); 2179b32d7a39SMax Reitz return -EINVAL; 21805bbd2e59SKevin Wolf } 21815bbd2e59SKevin Wolf 2182b32d7a39SMax Reitz blk_set_enable_write_cache(blk, !writethrough); 2183b32d7a39SMax Reitz return 0; 2184b32d7a39SMax Reitz } 2185b32d7a39SMax Reitz 2186b32d7a39SMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2187797ac58cSKevin Wolf { 2188797ac58cSKevin Wolf int ret; 2189797ac58cSKevin Wolf 21904c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2191797ac58cSKevin Wolf if (ret < 0) { 2192797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2193b32d7a39SMax Reitz return ret; 2194797ac58cSKevin Wolf } 2195797ac58cSKevin Wolf 2196b32d7a39SMax Reitz return 0; 2197b32d7a39SMax Reitz } 2198b32d7a39SMax Reitz 2199b32d7a39SMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 22004cc70e93SFam Zheng { 22014cc70e93SFam Zheng int ret; 22024cc70e93SFam Zheng 22034c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 22044cc70e93SFam Zheng if (ret < 0) { 22054cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 2206b32d7a39SMax Reitz return ret; 22074cc70e93SFam Zheng } 2208b32d7a39SMax Reitz 2209b32d7a39SMax Reitz return 0; 22104cc70e93SFam Zheng } 22114cc70e93SFam Zheng 2212797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2213797ac58cSKevin Wolf .name = "break", 2214797ac58cSKevin Wolf .argmin = 2, 2215797ac58cSKevin Wolf .argmax = 2, 2216797ac58cSKevin Wolf .cfunc = break_f, 2217797ac58cSKevin Wolf .args = "event tag", 2218797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2219797ac58cSKevin Wolf "request as tag", 2220797ac58cSKevin Wolf }; 2221797ac58cSKevin Wolf 22224cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 22234cc70e93SFam Zheng .name = "remove_break", 22244cc70e93SFam Zheng .argmin = 1, 22254cc70e93SFam Zheng .argmax = 1, 22264cc70e93SFam Zheng .cfunc = remove_break_f, 22274cc70e93SFam Zheng .args = "tag", 22284cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 22294cc70e93SFam Zheng }; 22304cc70e93SFam Zheng 2231b32d7a39SMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2232797ac58cSKevin Wolf { 2233797ac58cSKevin Wolf int ret; 2234797ac58cSKevin Wolf 22354c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2236797ac58cSKevin Wolf if (ret < 0) { 2237797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2238b32d7a39SMax Reitz return ret; 2239797ac58cSKevin Wolf } 2240b32d7a39SMax Reitz 2241b32d7a39SMax Reitz return 0; 2242797ac58cSKevin Wolf } 2243797ac58cSKevin Wolf 2244797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2245797ac58cSKevin Wolf .name = "resume", 2246797ac58cSKevin Wolf .argmin = 1, 2247797ac58cSKevin Wolf .argmax = 1, 2248797ac58cSKevin Wolf .cfunc = resume_f, 2249797ac58cSKevin Wolf .args = "tag", 2250797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2251797ac58cSKevin Wolf }; 2252797ac58cSKevin Wolf 2253b32d7a39SMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2254797ac58cSKevin Wolf { 22554c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 22564c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2257797ac58cSKevin Wolf } 2258b32d7a39SMax Reitz return 0; 2259797ac58cSKevin Wolf } 2260797ac58cSKevin Wolf 2261797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2262797ac58cSKevin Wolf .name = "wait_break", 2263797ac58cSKevin Wolf .argmin = 1, 2264797ac58cSKevin Wolf .argmax = 1, 2265797ac58cSKevin Wolf .cfunc = wait_break_f, 2266797ac58cSKevin Wolf .args = "tag", 2267797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2268797ac58cSKevin Wolf }; 2269797ac58cSKevin Wolf 2270b32d7a39SMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2271797ac58cSKevin Wolf { 2272797ac58cSKevin Wolf abort(); 2273797ac58cSKevin Wolf } 2274797ac58cSKevin Wolf 2275797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2276797ac58cSKevin Wolf .name = "abort", 2277797ac58cSKevin Wolf .cfunc = abort_f, 2278797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2279797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2280797ac58cSKevin Wolf }; 2281797ac58cSKevin Wolf 22820e82dc7bSMax Reitz static void sigraise_help(void) 22830e82dc7bSMax Reitz { 22840e82dc7bSMax Reitz printf( 22850e82dc7bSMax Reitz "\n" 22860e82dc7bSMax Reitz " raises the given signal\n" 22870e82dc7bSMax Reitz "\n" 22880e82dc7bSMax Reitz " Example:\n" 22890e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 22900e82dc7bSMax Reitz "\n" 22910e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 22920e82dc7bSMax Reitz " given to sigraise.\n" 22930e82dc7bSMax Reitz "\n", SIGTERM); 22940e82dc7bSMax Reitz } 22950e82dc7bSMax Reitz 2296b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 22970e82dc7bSMax Reitz 22980e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 22990e82dc7bSMax Reitz .name = "sigraise", 23000e82dc7bSMax Reitz .cfunc = sigraise_f, 23010e82dc7bSMax Reitz .argmin = 1, 23020e82dc7bSMax Reitz .argmax = 1, 23030e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 23040e82dc7bSMax Reitz .args = "signal", 23050e82dc7bSMax Reitz .oneline = "raises a signal", 23060e82dc7bSMax Reitz .help = sigraise_help, 23070e82dc7bSMax Reitz }; 23080e82dc7bSMax Reitz 2309b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 23100e82dc7bSMax Reitz { 23119b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 23120e82dc7bSMax Reitz if (sig < 0) { 2313a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2314b32d7a39SMax Reitz return sig; 23159b0beaf3SJohn Snow } else if (sig > NSIG) { 23169b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 23179b0beaf3SJohn Snow argv[1]); 2318b32d7a39SMax Reitz return -EINVAL; 23190e82dc7bSMax Reitz } 23200e82dc7bSMax Reitz 23210e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 23220e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 23230e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 23240e82dc7bSMax Reitz fflush(stdout); 23250e82dc7bSMax Reitz fflush(stderr); 23260e82dc7bSMax Reitz 23270e82dc7bSMax Reitz raise(sig); 2328b32d7a39SMax Reitz 2329b32d7a39SMax Reitz return 0; 23300e82dc7bSMax Reitz } 23310e82dc7bSMax Reitz 2332cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2333cd33d02aSKevin Wolf { 2334cd33d02aSKevin Wolf bool *expired = opaque; 2335cd33d02aSKevin Wolf *expired = true; 2336cd33d02aSKevin Wolf } 2337cd33d02aSKevin Wolf 2338b32d7a39SMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2339cd33d02aSKevin Wolf { 2340cd33d02aSKevin Wolf char *endptr; 2341cd33d02aSKevin Wolf long ms; 2342cd33d02aSKevin Wolf struct QEMUTimer *timer; 2343cd33d02aSKevin Wolf bool expired = false; 2344cd33d02aSKevin Wolf 2345cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2346cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2347cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2348b32d7a39SMax Reitz return -EINVAL; 2349cd33d02aSKevin Wolf } 2350cd33d02aSKevin Wolf 2351cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2352cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2353cd33d02aSKevin Wolf 2354cd33d02aSKevin Wolf while (!expired) { 2355cd33d02aSKevin Wolf main_loop_wait(false); 2356cd33d02aSKevin Wolf } 2357cd33d02aSKevin Wolf 2358cd33d02aSKevin Wolf timer_free(timer); 2359b32d7a39SMax Reitz return 0; 2360cd33d02aSKevin Wolf } 2361cd33d02aSKevin Wolf 2362cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2363cd33d02aSKevin Wolf .name = "sleep", 2364cd33d02aSKevin Wolf .argmin = 1, 2365cd33d02aSKevin Wolf .argmax = 1, 2366cd33d02aSKevin Wolf .cfunc = sleep_f, 2367cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2368cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2369cd33d02aSKevin Wolf }; 2370cd33d02aSKevin Wolf 2371f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2372f18a834aSKevin Wolf { 2373f18a834aSKevin Wolf printf("%s ", cmd); 2374f18a834aSKevin Wolf 2375f18a834aSKevin Wolf if (ct->args) { 2376f18a834aSKevin Wolf printf("%s ", ct->args); 2377f18a834aSKevin Wolf } 2378f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2379f18a834aSKevin Wolf } 2380f18a834aSKevin Wolf 2381f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2382f18a834aSKevin Wolf { 2383f18a834aSKevin Wolf help_oneline(cmd, ct); 2384f18a834aSKevin Wolf if (ct->help) { 2385f18a834aSKevin Wolf ct->help(); 2386f18a834aSKevin Wolf } 2387f18a834aSKevin Wolf } 2388f18a834aSKevin Wolf 2389f18a834aSKevin Wolf static void help_all(void) 2390f18a834aSKevin Wolf { 2391f18a834aSKevin Wolf const cmdinfo_t *ct; 2392f18a834aSKevin Wolf 2393f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2394f18a834aSKevin Wolf help_oneline(ct->name, ct); 2395f18a834aSKevin Wolf } 2396f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2397f18a834aSKevin Wolf } 2398f18a834aSKevin Wolf 2399b32d7a39SMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2400f18a834aSKevin Wolf { 2401f18a834aSKevin Wolf const cmdinfo_t *ct; 2402f18a834aSKevin Wolf 2403da16f4b8SDr. David Alan Gilbert if (argc < 2) { 2404f18a834aSKevin Wolf help_all(); 2405b32d7a39SMax Reitz return 0; 2406f18a834aSKevin Wolf } 2407f18a834aSKevin Wolf 2408f18a834aSKevin Wolf ct = find_command(argv[1]); 2409f18a834aSKevin Wolf if (ct == NULL) { 2410f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2411b32d7a39SMax Reitz return -EINVAL; 2412f18a834aSKevin Wolf } 2413f18a834aSKevin Wolf 2414f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2415b32d7a39SMax Reitz return 0; 2416f18a834aSKevin Wolf } 2417f18a834aSKevin Wolf 2418f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2419f18a834aSKevin Wolf .name = "help", 2420f18a834aSKevin Wolf .altname = "?", 2421f18a834aSKevin Wolf .cfunc = help_f, 2422f18a834aSKevin Wolf .argmin = 0, 2423f18a834aSKevin Wolf .argmax = 1, 2424f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2425f18a834aSKevin Wolf .args = "[command]", 2426f18a834aSKevin Wolf .oneline = "help for one or all commands", 2427f18a834aSKevin Wolf }; 2428f18a834aSKevin Wolf 242978632a3dSVladimir Sementsov-Ogievskiy /* 243078632a3dSVladimir Sementsov-Ogievskiy * Called with aio context of blk acquired. Or with qemu_get_aio_context() 243178632a3dSVladimir Sementsov-Ogievskiy * context acquired if blk is NULL. 243278632a3dSVladimir Sementsov-Ogievskiy */ 2433b32d7a39SMax Reitz int qemuio_command(BlockBackend *blk, const char *cmd) 2434dd583296SKevin Wolf { 2435dd583296SKevin Wolf char *input; 2436dd583296SKevin Wolf const cmdinfo_t *ct; 2437dd583296SKevin Wolf char **v; 2438dd583296SKevin Wolf int c; 2439b32d7a39SMax Reitz int ret = 0; 2440dd583296SKevin Wolf 2441dd583296SKevin Wolf input = g_strdup(cmd); 2442dd583296SKevin Wolf v = breakline(input, &c); 2443dd583296SKevin Wolf if (c) { 2444dd583296SKevin Wolf ct = find_command(v[0]); 2445dd583296SKevin Wolf if (ct) { 2446b32d7a39SMax Reitz ret = command(blk, ct, c, v); 2447dd583296SKevin Wolf } else { 2448dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2449b32d7a39SMax Reitz ret = -EINVAL; 2450dd583296SKevin Wolf } 2451dd583296SKevin Wolf } 2452dd583296SKevin Wolf g_free(input); 2453dd583296SKevin Wolf g_free(v); 2454b32d7a39SMax Reitz 2455b32d7a39SMax Reitz return ret; 2456dd583296SKevin Wolf } 2457dd583296SKevin Wolf 2458797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2459797ac58cSKevin Wolf { 2460797ac58cSKevin Wolf /* initialize commands */ 2461c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2462c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2463c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2464c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2465c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2466c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2467c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2468c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2469c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2470c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2471c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2472c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2473c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2474c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2475c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 24765bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2477c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 24784cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2479c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2480c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2481c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2482cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 24830e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2484797ac58cSKevin Wolf } 2485