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, 5591321e008SStefan Hajnoczi int64_t bytes, BdrvRequestFlags 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, 5761321e008SStefan Hajnoczi int64_t bytes, BdrvRequestFlags flags, 5771321e008SStefan Hajnoczi int64_t *total) 578797ac58cSKevin Wolf { 579264dcbb2SPaolo Bonzini int ret = blk_pwrite_zeroes(blk, offset, bytes, 580264dcbb2SPaolo Bonzini flags | BDRV_REQ_ZERO_WRITE); 581797ac58cSKevin Wolf 582264dcbb2SPaolo Bonzini if (ret < 0) { 583264dcbb2SPaolo Bonzini return ret; 584797ac58cSKevin Wolf } 585264dcbb2SPaolo Bonzini *total = bytes; 586797ac58cSKevin Wolf return 1; 587797ac58cSKevin Wolf } 588797ac58cSKevin Wolf 5894c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 590f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 591797ac58cSKevin Wolf { 592797ac58cSKevin Wolf int ret; 593797ac58cSKevin Wolf 59441ae31e3SAlberto Garcia if (bytes > BDRV_REQUEST_MAX_BYTES) { 5959b0beaf3SJohn Snow return -ERANGE; 5969b0beaf3SJohn Snow } 5979b0beaf3SJohn Snow 5980cadf2c8SAlberto Faria ret = blk_pwrite_compressed(blk, offset, bytes, buf); 599797ac58cSKevin Wolf if (ret < 0) { 600797ac58cSKevin Wolf return ret; 601797ac58cSKevin Wolf } 602f5a5ca79SManos Pitsidianakis *total = bytes; 603797ac58cSKevin Wolf return 1; 604797ac58cSKevin Wolf } 605797ac58cSKevin Wolf 6064c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6079b0beaf3SJohn Snow int64_t count, int64_t *total) 608797ac58cSKevin Wolf { 6099b0beaf3SJohn Snow if (count > INT_MAX) { 6109b0beaf3SJohn Snow return -ERANGE; 6119b0beaf3SJohn Snow } 6129b0beaf3SJohn Snow 6134c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 614797ac58cSKevin Wolf if (*total < 0) { 615797ac58cSKevin Wolf return *total; 616797ac58cSKevin Wolf } 617797ac58cSKevin Wolf return 1; 618797ac58cSKevin Wolf } 619797ac58cSKevin Wolf 6204c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6219b0beaf3SJohn Snow int64_t count, int64_t *total) 622797ac58cSKevin Wolf { 6239b0beaf3SJohn Snow if (count > INT_MAX) { 6249b0beaf3SJohn Snow return -ERANGE; 6259b0beaf3SJohn Snow } 6269b0beaf3SJohn Snow 6274c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 628797ac58cSKevin Wolf if (*total < 0) { 629797ac58cSKevin Wolf return *total; 630797ac58cSKevin Wolf } 631797ac58cSKevin Wolf return 1; 632797ac58cSKevin Wolf } 633797ac58cSKevin Wolf 634797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 635797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 636797ac58cSKevin Wolf { 637797ac58cSKevin Wolf *(int *)opaque = ret; 638797ac58cSKevin Wolf } 639797ac58cSKevin Wolf 6404c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 641797ac58cSKevin Wolf int64_t offset, int *total) 642797ac58cSKevin Wolf { 643797ac58cSKevin Wolf int async_ret = NOT_DONE; 644797ac58cSKevin Wolf 6457b3f9712SEric Blake blk_aio_preadv(blk, offset, qiov, 0, aio_rw_done, &async_ret); 646797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 647797ac58cSKevin Wolf main_loop_wait(false); 648797ac58cSKevin Wolf } 649797ac58cSKevin Wolf 650797ac58cSKevin Wolf *total = qiov->size; 651797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 652797ac58cSKevin Wolf } 653797ac58cSKevin Wolf 6544c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 6551321e008SStefan Hajnoczi int64_t offset, BdrvRequestFlags flags, int *total) 656797ac58cSKevin Wolf { 657797ac58cSKevin Wolf int async_ret = NOT_DONE; 658797ac58cSKevin Wolf 659770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 660797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 661797ac58cSKevin Wolf main_loop_wait(false); 662797ac58cSKevin Wolf } 663797ac58cSKevin Wolf 664797ac58cSKevin Wolf *total = qiov->size; 665797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 666797ac58cSKevin Wolf } 667797ac58cSKevin Wolf 668797ac58cSKevin Wolf static void read_help(void) 669797ac58cSKevin Wolf { 670797ac58cSKevin Wolf printf( 671797ac58cSKevin Wolf "\n" 672797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 673797ac58cSKevin Wolf "\n" 674797ac58cSKevin Wolf " Example:\n" 675797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 676797ac58cSKevin Wolf "\n" 677797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 678797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 679797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 680797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 681797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 682093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 683797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 684797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 685797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 686797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 687797ac58cSKevin Wolf "\n"); 688797ac58cSKevin Wolf } 689797ac58cSKevin Wolf 690b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 691797ac58cSKevin Wolf 692797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 693797ac58cSKevin Wolf .name = "read", 694797ac58cSKevin Wolf .altname = "r", 695797ac58cSKevin Wolf .cfunc = read_f, 696797ac58cSKevin Wolf .argmin = 2, 697797ac58cSKevin Wolf .argmax = -1, 698093ea232SEric Blake .args = "[-abCqv] [-P pattern [-s off] [-l len]] off len", 699797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 700797ac58cSKevin Wolf .help = read_help, 701797ac58cSKevin Wolf }; 702797ac58cSKevin Wolf 703b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 704797ac58cSKevin Wolf { 70550290c00SAlex Bennée struct timespec t1, t2; 706093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 707dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 708b32d7a39SMax Reitz int c, cnt, ret; 709797ac58cSKevin Wolf char *buf; 710797ac58cSKevin Wolf int64_t offset; 7119b0beaf3SJohn Snow int64_t count; 712797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 7139b0beaf3SJohn Snow int64_t total = 0; 7149b0beaf3SJohn Snow int pattern = 0; 7159b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 716797ac58cSKevin Wolf 717b062ad86SEric Blake while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) { 718797ac58cSKevin Wolf switch (c) { 719797ac58cSKevin Wolf case 'b': 720dc38852aSEric Blake bflag = true; 721797ac58cSKevin Wolf break; 722797ac58cSKevin Wolf case 'C': 723dc38852aSEric Blake Cflag = true; 724797ac58cSKevin Wolf break; 725797ac58cSKevin Wolf case 'l': 726dc38852aSEric Blake lflag = true; 727797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 728797ac58cSKevin Wolf if (pattern_count < 0) { 729a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 730b32d7a39SMax Reitz return pattern_count; 731797ac58cSKevin Wolf } 732797ac58cSKevin Wolf break; 733797ac58cSKevin Wolf case 'p': 734093ea232SEric Blake /* Ignored for backwards compatibility */ 735797ac58cSKevin Wolf break; 736797ac58cSKevin Wolf case 'P': 737dc38852aSEric Blake Pflag = true; 738797ac58cSKevin Wolf pattern = parse_pattern(optarg); 739797ac58cSKevin Wolf if (pattern < 0) { 740b32d7a39SMax Reitz return -EINVAL; 741797ac58cSKevin Wolf } 742797ac58cSKevin Wolf break; 743797ac58cSKevin Wolf case 'q': 744dc38852aSEric Blake qflag = true; 745797ac58cSKevin Wolf break; 746797ac58cSKevin Wolf case 's': 747dc38852aSEric Blake sflag = true; 748797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 749797ac58cSKevin Wolf if (pattern_offset < 0) { 750a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 751b32d7a39SMax Reitz return pattern_offset; 752797ac58cSKevin Wolf } 753797ac58cSKevin Wolf break; 754797ac58cSKevin Wolf case 'v': 755dc38852aSEric Blake vflag = true; 756797ac58cSKevin Wolf break; 757797ac58cSKevin Wolf default: 758b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 759b32d7a39SMax Reitz return -EINVAL; 760797ac58cSKevin Wolf } 761797ac58cSKevin Wolf } 762797ac58cSKevin Wolf 763797ac58cSKevin Wolf if (optind != argc - 2) { 764b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 765b32d7a39SMax Reitz return -EINVAL; 766797ac58cSKevin Wolf } 767797ac58cSKevin Wolf 768797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 769797ac58cSKevin Wolf if (offset < 0) { 770a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 771b32d7a39SMax Reitz return offset; 772797ac58cSKevin Wolf } 773797ac58cSKevin Wolf 774797ac58cSKevin Wolf optind++; 775797ac58cSKevin Wolf count = cvtnum(argv[optind]); 776797ac58cSKevin Wolf if (count < 0) { 777a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 778b32d7a39SMax Reitz return count; 7793026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7809b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7813026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 782b32d7a39SMax Reitz return -EINVAL; 783797ac58cSKevin Wolf } 784797ac58cSKevin Wolf 785797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 786b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 787b32d7a39SMax Reitz return -EINVAL; 788797ac58cSKevin Wolf } 789797ac58cSKevin Wolf 790797ac58cSKevin Wolf if (!lflag) { 791797ac58cSKevin Wolf pattern_count = count - pattern_offset; 792797ac58cSKevin Wolf } 793797ac58cSKevin Wolf 794797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 795797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 796b32d7a39SMax Reitz return -EINVAL; 797797ac58cSKevin Wolf } 798797ac58cSKevin Wolf 799093ea232SEric Blake if (bflag) { 8001bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 8011bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 802797ac58cSKevin Wolf offset); 803b32d7a39SMax Reitz return -EINVAL; 804797ac58cSKevin Wolf } 8051bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 8061bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 807797ac58cSKevin Wolf count); 808b32d7a39SMax Reitz return -EINVAL; 809797ac58cSKevin Wolf } 810797ac58cSKevin Wolf } 811797ac58cSKevin Wolf 8124c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, 0xab); 813797ac58cSKevin Wolf 81450290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 8157b3f9712SEric Blake if (bflag) { 816b32d7a39SMax Reitz ret = do_load_vmstate(blk, buf, offset, count, &total); 817797ac58cSKevin Wolf } else { 818b32d7a39SMax Reitz ret = do_pread(blk, buf, offset, count, &total); 819797ac58cSKevin Wolf } 82050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 821797ac58cSKevin Wolf 822b32d7a39SMax Reitz if (ret < 0) { 823b32d7a39SMax Reitz printf("read failed: %s\n", strerror(-ret)); 824797ac58cSKevin Wolf goto out; 825797ac58cSKevin Wolf } 826b32d7a39SMax Reitz cnt = ret; 827b32d7a39SMax Reitz 828b32d7a39SMax Reitz ret = 0; 829797ac58cSKevin Wolf 830797ac58cSKevin Wolf if (Pflag) { 831797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 832797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 833797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 834797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 8359b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 836797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 837b32d7a39SMax Reitz ret = -EINVAL; 838797ac58cSKevin Wolf } 839797ac58cSKevin Wolf g_free(cmp_buf); 840797ac58cSKevin Wolf } 841797ac58cSKevin Wolf 842797ac58cSKevin Wolf if (qflag) { 843797ac58cSKevin Wolf goto out; 844797ac58cSKevin Wolf } 845797ac58cSKevin Wolf 846797ac58cSKevin Wolf if (vflag) { 847797ac58cSKevin Wolf dump_buffer(buf, offset, count); 848797ac58cSKevin Wolf } 849797ac58cSKevin Wolf 850797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 851797ac58cSKevin Wolf t2 = tsub(t2, t1); 852797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 853797ac58cSKevin Wolf 854797ac58cSKevin Wolf out: 855797ac58cSKevin Wolf qemu_io_free(buf); 856b32d7a39SMax Reitz return ret; 857797ac58cSKevin Wolf } 858797ac58cSKevin Wolf 859797ac58cSKevin Wolf static void readv_help(void) 860797ac58cSKevin Wolf { 861797ac58cSKevin Wolf printf( 862797ac58cSKevin Wolf "\n" 863797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 864797ac58cSKevin Wolf "\n" 865797ac58cSKevin Wolf " Example:\n" 866797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 867797ac58cSKevin Wolf "\n" 868797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 869797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 870797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 871797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 872797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 873797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 874797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 875797ac58cSKevin Wolf "\n"); 876797ac58cSKevin Wolf } 877797ac58cSKevin Wolf 878b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 879797ac58cSKevin Wolf 880797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 881797ac58cSKevin Wolf .name = "readv", 882797ac58cSKevin Wolf .cfunc = readv_f, 883797ac58cSKevin Wolf .argmin = 2, 884797ac58cSKevin Wolf .argmax = -1, 885797ac58cSKevin Wolf .args = "[-Cqv] [-P pattern] off len [len..]", 886797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 887797ac58cSKevin Wolf .help = readv_help, 888797ac58cSKevin Wolf }; 889797ac58cSKevin Wolf 890b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 891797ac58cSKevin Wolf { 89250290c00SAlex Bennée struct timespec t1, t2; 893dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 894b32d7a39SMax Reitz int c, cnt, ret; 895797ac58cSKevin Wolf char *buf; 896797ac58cSKevin Wolf int64_t offset; 897797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 898797ac58cSKevin Wolf int total = 0; 899797ac58cSKevin Wolf int nr_iov; 900797ac58cSKevin Wolf QEMUIOVector qiov; 901797ac58cSKevin Wolf int pattern = 0; 902dc38852aSEric Blake bool Pflag = false; 903797ac58cSKevin Wolf 904b062ad86SEric Blake while ((c = getopt(argc, argv, "CP:qv")) != -1) { 905797ac58cSKevin Wolf switch (c) { 906797ac58cSKevin Wolf case 'C': 907dc38852aSEric Blake Cflag = true; 908797ac58cSKevin Wolf break; 909797ac58cSKevin Wolf case 'P': 910dc38852aSEric Blake Pflag = true; 911797ac58cSKevin Wolf pattern = parse_pattern(optarg); 912797ac58cSKevin Wolf if (pattern < 0) { 913b32d7a39SMax Reitz return -EINVAL; 914797ac58cSKevin Wolf } 915797ac58cSKevin Wolf break; 916797ac58cSKevin Wolf case 'q': 917dc38852aSEric Blake qflag = true; 918797ac58cSKevin Wolf break; 919797ac58cSKevin Wolf case 'v': 920dc38852aSEric Blake vflag = true; 921797ac58cSKevin Wolf break; 922797ac58cSKevin Wolf default: 923b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 924b32d7a39SMax Reitz return -EINVAL; 925797ac58cSKevin Wolf } 926797ac58cSKevin Wolf } 927797ac58cSKevin Wolf 928797ac58cSKevin Wolf if (optind > argc - 2) { 929b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 930b32d7a39SMax Reitz return -EINVAL; 931797ac58cSKevin Wolf } 932797ac58cSKevin Wolf 933797ac58cSKevin Wolf 934797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 935797ac58cSKevin Wolf if (offset < 0) { 936a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 937b32d7a39SMax Reitz return offset; 938797ac58cSKevin Wolf } 939797ac58cSKevin Wolf optind++; 940797ac58cSKevin Wolf 941797ac58cSKevin Wolf nr_iov = argc - optind; 9424c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab); 943797ac58cSKevin Wolf if (buf == NULL) { 944b32d7a39SMax Reitz return -EINVAL; 945797ac58cSKevin Wolf } 946797ac58cSKevin Wolf 94750290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 948b32d7a39SMax Reitz ret = do_aio_readv(blk, &qiov, offset, &total); 94950290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 950797ac58cSKevin Wolf 951b32d7a39SMax Reitz if (ret < 0) { 952b32d7a39SMax Reitz printf("readv failed: %s\n", strerror(-ret)); 953797ac58cSKevin Wolf goto out; 954797ac58cSKevin Wolf } 955b32d7a39SMax Reitz cnt = ret; 956b32d7a39SMax Reitz 957b32d7a39SMax Reitz ret = 0; 958797ac58cSKevin Wolf 959797ac58cSKevin Wolf if (Pflag) { 960797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 961797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 962797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 963797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 964cf67b692SStefan Weil PRId64 ", %zu bytes\n", offset, qiov.size); 965b32d7a39SMax Reitz ret = -EINVAL; 966797ac58cSKevin Wolf } 967797ac58cSKevin Wolf g_free(cmp_buf); 968797ac58cSKevin Wolf } 969797ac58cSKevin Wolf 970797ac58cSKevin Wolf if (qflag) { 971797ac58cSKevin Wolf goto out; 972797ac58cSKevin Wolf } 973797ac58cSKevin Wolf 974797ac58cSKevin Wolf if (vflag) { 975797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 976797ac58cSKevin Wolf } 977797ac58cSKevin Wolf 978797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 979797ac58cSKevin Wolf t2 = tsub(t2, t1); 980797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 981797ac58cSKevin Wolf 982797ac58cSKevin Wolf out: 983797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 984797ac58cSKevin Wolf qemu_io_free(buf); 985b32d7a39SMax Reitz return ret; 986797ac58cSKevin Wolf } 987797ac58cSKevin Wolf 988797ac58cSKevin Wolf static void write_help(void) 989797ac58cSKevin Wolf { 990797ac58cSKevin Wolf printf( 991797ac58cSKevin Wolf "\n" 992797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 993797ac58cSKevin Wolf "\n" 994797ac58cSKevin Wolf " Example:\n" 995797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 996797ac58cSKevin Wolf "\n" 997797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 998797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 999797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 10004c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 1001770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1002c6e3f520SKevin Wolf " -n, -- with -z, don't allow slow fallback\n" 1003093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 1004797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 10054d731510SDenis Plotnikov " -s, -- use a pattern file to fill the write buffer\n" 1006797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1007797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1008c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1009264dcbb2SPaolo Bonzini " -z, -- write zeroes using blk_pwrite_zeroes\n" 1010797ac58cSKevin Wolf "\n"); 1011797ac58cSKevin Wolf } 1012797ac58cSKevin Wolf 1013b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 1014797ac58cSKevin Wolf 1015797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 1016797ac58cSKevin Wolf .name = "write", 1017797ac58cSKevin Wolf .altname = "w", 1018797ac58cSKevin Wolf .cfunc = write_f, 1019887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1020797ac58cSKevin Wolf .argmin = 2, 1021797ac58cSKevin Wolf .argmax = -1, 10224d731510SDenis Plotnikov .args = "[-bcCfnquz] [-P pattern | -s source_file] off len", 1023797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1024797ac58cSKevin Wolf .help = write_help, 1025797ac58cSKevin Wolf }; 1026797ac58cSKevin Wolf 1027b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 1028797ac58cSKevin Wolf { 102950290c00SAlex Bennée struct timespec t1, t2; 1030093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 10314d731510SDenis Plotnikov bool Pflag = false, zflag = false, cflag = false, sflag = false; 10321321e008SStefan Hajnoczi BdrvRequestFlags flags = 0; 1033b32d7a39SMax Reitz int c, cnt, ret; 1034797ac58cSKevin Wolf char *buf = NULL; 1035797ac58cSKevin Wolf int64_t offset; 10369b0beaf3SJohn Snow int64_t count; 1037797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 10389b0beaf3SJohn Snow int64_t total = 0; 1039797ac58cSKevin Wolf int pattern = 0xcd; 10404d731510SDenis Plotnikov const char *file_name = NULL; 1041797ac58cSKevin Wolf 10424d731510SDenis Plotnikov while ((c = getopt(argc, argv, "bcCfnpP:qs:uz")) != -1) { 1043797ac58cSKevin Wolf switch (c) { 1044797ac58cSKevin Wolf case 'b': 1045dc38852aSEric Blake bflag = true; 1046797ac58cSKevin Wolf break; 1047797ac58cSKevin Wolf case 'c': 1048dc38852aSEric Blake cflag = true; 1049797ac58cSKevin Wolf break; 1050797ac58cSKevin Wolf case 'C': 1051dc38852aSEric Blake Cflag = true; 1052797ac58cSKevin Wolf break; 1053770e0e0eSEric Blake case 'f': 1054770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1055770e0e0eSEric Blake break; 1056c6e3f520SKevin Wolf case 'n': 1057c6e3f520SKevin Wolf flags |= BDRV_REQ_NO_FALLBACK; 1058c6e3f520SKevin Wolf break; 1059797ac58cSKevin Wolf case 'p': 1060093ea232SEric Blake /* Ignored for backwards compatibility */ 1061797ac58cSKevin Wolf break; 1062797ac58cSKevin Wolf case 'P': 1063dc38852aSEric Blake Pflag = true; 1064797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1065797ac58cSKevin Wolf if (pattern < 0) { 1066b32d7a39SMax Reitz return -EINVAL; 1067797ac58cSKevin Wolf } 1068797ac58cSKevin Wolf break; 1069797ac58cSKevin Wolf case 'q': 1070dc38852aSEric Blake qflag = true; 1071797ac58cSKevin Wolf break; 10724d731510SDenis Plotnikov case 's': 10734d731510SDenis Plotnikov sflag = true; 10744d731510SDenis Plotnikov file_name = optarg; 10754d731510SDenis Plotnikov break; 1076c2e001ccSEric Blake case 'u': 1077c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1078c2e001ccSEric Blake break; 1079797ac58cSKevin Wolf case 'z': 1080dc38852aSEric Blake zflag = true; 1081797ac58cSKevin Wolf break; 1082797ac58cSKevin Wolf default: 1083b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1084b32d7a39SMax Reitz return -EINVAL; 1085797ac58cSKevin Wolf } 1086797ac58cSKevin Wolf } 1087797ac58cSKevin Wolf 1088797ac58cSKevin Wolf if (optind != argc - 2) { 1089b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1090b32d7a39SMax Reitz return -EINVAL; 1091797ac58cSKevin Wolf } 1092797ac58cSKevin Wolf 1093093ea232SEric Blake if (bflag && zflag) { 1094093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1095b32d7a39SMax Reitz return -EINVAL; 1096797ac58cSKevin Wolf } 1097797ac58cSKevin Wolf 1098770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1099770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1100b32d7a39SMax Reitz return -EINVAL; 1101770e0e0eSEric Blake } 1102770e0e0eSEric Blake 1103c6e3f520SKevin Wolf if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { 1104c6e3f520SKevin Wolf printf("-n requires -z to be specified\n"); 1105c6e3f520SKevin Wolf return -EINVAL; 1106c6e3f520SKevin Wolf } 1107c6e3f520SKevin Wolf 1108c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1109c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1110b32d7a39SMax Reitz return -EINVAL; 1111c2e001ccSEric Blake } 1112c2e001ccSEric Blake 11134d731510SDenis Plotnikov if (zflag + Pflag + sflag > 1) { 11144d731510SDenis Plotnikov printf("Only one of -z, -P, and -s " 11154d731510SDenis Plotnikov "can be specified at the same time\n"); 1116b32d7a39SMax Reitz return -EINVAL; 1117797ac58cSKevin Wolf } 1118797ac58cSKevin Wolf 1119797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1120797ac58cSKevin Wolf if (offset < 0) { 1121a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1122b32d7a39SMax Reitz return offset; 1123797ac58cSKevin Wolf } 1124797ac58cSKevin Wolf 1125797ac58cSKevin Wolf optind++; 1126797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1127797ac58cSKevin Wolf if (count < 0) { 1128a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1129b32d7a39SMax Reitz return count; 1130395aecd0SEric Blake } else if (count > BDRV_REQUEST_MAX_BYTES && 1131395aecd0SEric Blake !(flags & BDRV_REQ_NO_FALLBACK)) { 1132395aecd0SEric Blake printf("length cannot exceed %" PRIu64 " without -n, given %s\n", 11333026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1134b32d7a39SMax Reitz return -EINVAL; 1135797ac58cSKevin Wolf } 1136797ac58cSKevin Wolf 1137093ea232SEric Blake if (bflag || cflag) { 11381bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 11391bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1140797ac58cSKevin Wolf offset); 1141b32d7a39SMax Reitz return -EINVAL; 1142797ac58cSKevin Wolf } 1143797ac58cSKevin Wolf 11441bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 11451bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1146797ac58cSKevin Wolf count); 1147b32d7a39SMax Reitz return -EINVAL; 1148797ac58cSKevin Wolf } 1149797ac58cSKevin Wolf } 1150797ac58cSKevin Wolf 1151797ac58cSKevin Wolf if (!zflag) { 11524d731510SDenis Plotnikov if (sflag) { 11534d731510SDenis Plotnikov buf = qemu_io_alloc_from_file(blk, count, file_name); 11544d731510SDenis Plotnikov if (!buf) { 11554d731510SDenis Plotnikov return -EINVAL; 11564d731510SDenis Plotnikov } 11574d731510SDenis Plotnikov } else { 11584c7b7e9bSMax Reitz buf = qemu_io_alloc(blk, count, pattern); 1159797ac58cSKevin Wolf } 11604d731510SDenis Plotnikov } 1161797ac58cSKevin Wolf 116250290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 11637b3f9712SEric Blake if (bflag) { 1164b32d7a39SMax Reitz ret = do_save_vmstate(blk, buf, offset, count, &total); 1165797ac58cSKevin Wolf } else if (zflag) { 1166264dcbb2SPaolo Bonzini ret = do_pwrite_zeroes(blk, offset, count, flags, &total); 1167797ac58cSKevin Wolf } else if (cflag) { 1168b32d7a39SMax Reitz ret = do_write_compressed(blk, buf, offset, count, &total); 1169797ac58cSKevin Wolf } else { 1170b32d7a39SMax Reitz ret = do_pwrite(blk, buf, offset, count, flags, &total); 1171797ac58cSKevin Wolf } 117250290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1173797ac58cSKevin Wolf 1174b32d7a39SMax Reitz if (ret < 0) { 1175b32d7a39SMax Reitz printf("write failed: %s\n", strerror(-ret)); 1176797ac58cSKevin Wolf goto out; 1177797ac58cSKevin Wolf } 1178b32d7a39SMax Reitz cnt = ret; 1179b32d7a39SMax Reitz 1180b32d7a39SMax Reitz ret = 0; 1181797ac58cSKevin Wolf 1182797ac58cSKevin Wolf if (qflag) { 1183797ac58cSKevin Wolf goto out; 1184797ac58cSKevin Wolf } 1185797ac58cSKevin Wolf 1186797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1187797ac58cSKevin Wolf t2 = tsub(t2, t1); 1188797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1189797ac58cSKevin Wolf 1190797ac58cSKevin Wolf out: 1191797ac58cSKevin Wolf if (!zflag) { 1192797ac58cSKevin Wolf qemu_io_free(buf); 1193797ac58cSKevin Wolf } 1194b32d7a39SMax Reitz return ret; 1195797ac58cSKevin Wolf } 1196797ac58cSKevin Wolf 1197797ac58cSKevin Wolf static void 1198797ac58cSKevin Wolf writev_help(void) 1199797ac58cSKevin Wolf { 1200797ac58cSKevin Wolf printf( 1201797ac58cSKevin Wolf "\n" 1202797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1203797ac58cSKevin Wolf "\n" 1204797ac58cSKevin Wolf " Example:\n" 12056e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1206797ac58cSKevin Wolf "\n" 1207797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1208797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1209797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1210797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1211770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1212797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1213797ac58cSKevin Wolf "\n"); 1214797ac58cSKevin Wolf } 1215797ac58cSKevin Wolf 1216b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1217797ac58cSKevin Wolf 1218797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1219797ac58cSKevin Wolf .name = "writev", 1220797ac58cSKevin Wolf .cfunc = writev_f, 1221887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1222797ac58cSKevin Wolf .argmin = 2, 1223797ac58cSKevin Wolf .argmax = -1, 1224770e0e0eSEric Blake .args = "[-Cfq] [-P pattern] off len [len..]", 1225797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1226797ac58cSKevin Wolf .help = writev_help, 1227797ac58cSKevin Wolf }; 1228797ac58cSKevin Wolf 1229b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1230797ac58cSKevin Wolf { 123150290c00SAlex Bennée struct timespec t1, t2; 1232dc38852aSEric Blake bool Cflag = false, qflag = false; 12331321e008SStefan Hajnoczi BdrvRequestFlags flags = 0; 1234b32d7a39SMax Reitz int c, cnt, ret; 1235797ac58cSKevin Wolf char *buf; 1236797ac58cSKevin Wolf int64_t offset; 1237797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1238797ac58cSKevin Wolf int total = 0; 1239797ac58cSKevin Wolf int nr_iov; 1240797ac58cSKevin Wolf int pattern = 0xcd; 1241797ac58cSKevin Wolf QEMUIOVector qiov; 1242797ac58cSKevin Wolf 12434ca1d340SEric Blake while ((c = getopt(argc, argv, "CfqP:")) != -1) { 1244797ac58cSKevin Wolf switch (c) { 1245797ac58cSKevin Wolf case 'C': 1246dc38852aSEric Blake Cflag = true; 1247797ac58cSKevin Wolf break; 1248770e0e0eSEric Blake case 'f': 1249770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1250770e0e0eSEric Blake break; 1251797ac58cSKevin Wolf case 'q': 1252dc38852aSEric Blake qflag = true; 1253797ac58cSKevin Wolf break; 1254797ac58cSKevin Wolf case 'P': 1255797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1256797ac58cSKevin Wolf if (pattern < 0) { 1257b32d7a39SMax Reitz return -EINVAL; 1258797ac58cSKevin Wolf } 1259797ac58cSKevin Wolf break; 1260797ac58cSKevin Wolf default: 1261b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1262b32d7a39SMax Reitz return -EINVAL; 1263797ac58cSKevin Wolf } 1264797ac58cSKevin Wolf } 1265797ac58cSKevin Wolf 1266797ac58cSKevin Wolf if (optind > argc - 2) { 1267b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1268b32d7a39SMax Reitz return -EINVAL; 1269797ac58cSKevin Wolf } 1270797ac58cSKevin Wolf 1271797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1272797ac58cSKevin Wolf if (offset < 0) { 1273a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1274b32d7a39SMax Reitz return offset; 1275797ac58cSKevin Wolf } 1276797ac58cSKevin Wolf optind++; 1277797ac58cSKevin Wolf 1278797ac58cSKevin Wolf nr_iov = argc - optind; 12794c7b7e9bSMax Reitz buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern); 1280797ac58cSKevin Wolf if (buf == NULL) { 1281b32d7a39SMax Reitz return -EINVAL; 1282797ac58cSKevin Wolf } 1283797ac58cSKevin Wolf 128450290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1285b32d7a39SMax Reitz ret = do_aio_writev(blk, &qiov, offset, flags, &total); 128650290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1287797ac58cSKevin Wolf 1288b32d7a39SMax Reitz if (ret < 0) { 1289b32d7a39SMax Reitz printf("writev failed: %s\n", strerror(-ret)); 1290797ac58cSKevin Wolf goto out; 1291797ac58cSKevin Wolf } 1292b32d7a39SMax Reitz cnt = ret; 1293b32d7a39SMax Reitz 1294b32d7a39SMax Reitz ret = 0; 1295797ac58cSKevin Wolf 1296797ac58cSKevin Wolf if (qflag) { 1297797ac58cSKevin Wolf goto out; 1298797ac58cSKevin Wolf } 1299797ac58cSKevin Wolf 1300797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1301797ac58cSKevin Wolf t2 = tsub(t2, t1); 1302797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1303797ac58cSKevin Wolf out: 1304797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1305797ac58cSKevin Wolf qemu_io_free(buf); 1306b32d7a39SMax Reitz return ret; 1307797ac58cSKevin Wolf } 1308797ac58cSKevin Wolf 1309797ac58cSKevin Wolf struct aio_ctx { 13104c7b7e9bSMax Reitz BlockBackend *blk; 1311797ac58cSKevin Wolf QEMUIOVector qiov; 1312797ac58cSKevin Wolf int64_t offset; 1313797ac58cSKevin Wolf char *buf; 1314dc38852aSEric Blake bool qflag; 1315dc38852aSEric Blake bool vflag; 1316dc38852aSEric Blake bool Cflag; 1317dc38852aSEric Blake bool Pflag; 1318dc38852aSEric Blake bool zflag; 1319a91f9584SFam Zheng BlockAcctCookie acct; 1320797ac58cSKevin Wolf int pattern; 132150290c00SAlex Bennée struct timespec t1; 1322797ac58cSKevin Wolf }; 1323797ac58cSKevin Wolf 1324797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1325797ac58cSKevin Wolf { 1326797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 132750290c00SAlex Bennée struct timespec t2; 1328797ac58cSKevin Wolf 132950290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1330797ac58cSKevin Wolf 1331797ac58cSKevin Wolf 1332797ac58cSKevin Wolf if (ret < 0) { 1333797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1334556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1335797ac58cSKevin Wolf goto out; 1336797ac58cSKevin Wolf } 1337797ac58cSKevin Wolf 13384c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1339a91f9584SFam Zheng 1340797ac58cSKevin Wolf if (ctx->qflag) { 1341797ac58cSKevin Wolf goto out; 1342797ac58cSKevin Wolf } 1343797ac58cSKevin Wolf 1344797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1345797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1346797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1347797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1348797ac58cSKevin Wolf out: 13495ceb7765SKevin Wolf if (!ctx->zflag) { 1350797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1351797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 13525ceb7765SKevin Wolf } 1353797ac58cSKevin Wolf g_free(ctx); 1354797ac58cSKevin Wolf } 1355797ac58cSKevin Wolf 1356797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1357797ac58cSKevin Wolf { 1358797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 135950290c00SAlex Bennée struct timespec t2; 1360797ac58cSKevin Wolf 136150290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1362797ac58cSKevin Wolf 1363797ac58cSKevin Wolf if (ret < 0) { 1364797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1365556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1366797ac58cSKevin Wolf goto out; 1367797ac58cSKevin Wolf } 1368797ac58cSKevin Wolf 1369797ac58cSKevin Wolf if (ctx->Pflag) { 1370797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1371797ac58cSKevin Wolf 1372797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1373797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1374797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1375cf67b692SStefan Weil PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); 1376797ac58cSKevin Wolf } 1377797ac58cSKevin Wolf g_free(cmp_buf); 1378797ac58cSKevin Wolf } 1379797ac58cSKevin Wolf 13804c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1381a91f9584SFam Zheng 1382797ac58cSKevin Wolf if (ctx->qflag) { 1383797ac58cSKevin Wolf goto out; 1384797ac58cSKevin Wolf } 1385797ac58cSKevin Wolf 1386797ac58cSKevin Wolf if (ctx->vflag) { 1387797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1388797ac58cSKevin Wolf } 1389797ac58cSKevin Wolf 1390797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1391797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1392797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1393797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1394797ac58cSKevin Wolf out: 1395797ac58cSKevin Wolf qemu_io_free(ctx->buf); 1396797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1397797ac58cSKevin Wolf g_free(ctx); 1398797ac58cSKevin Wolf } 1399797ac58cSKevin Wolf 1400797ac58cSKevin Wolf static void aio_read_help(void) 1401797ac58cSKevin Wolf { 1402797ac58cSKevin Wolf printf( 1403797ac58cSKevin Wolf "\n" 1404797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1405797ac58cSKevin Wolf "\n" 1406797ac58cSKevin Wolf " Example:\n" 1407797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1408797ac58cSKevin Wolf "\n" 1409797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1410797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1411797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1412797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1413b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1414b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1415b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1416797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1417797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 141837546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1419797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 1420797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1421797ac58cSKevin Wolf "\n"); 1422797ac58cSKevin Wolf } 1423797ac58cSKevin Wolf 1424b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1425797ac58cSKevin Wolf 1426797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1427797ac58cSKevin Wolf .name = "aio_read", 1428797ac58cSKevin Wolf .cfunc = aio_read_f, 1429797ac58cSKevin Wolf .argmin = 2, 1430797ac58cSKevin Wolf .argmax = -1, 143137546ff2SEric Blake .args = "[-Ciqv] [-P pattern] off len [len..]", 1432797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1433797ac58cSKevin Wolf .help = aio_read_help, 1434797ac58cSKevin Wolf }; 1435797ac58cSKevin Wolf 1436b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1437797ac58cSKevin Wolf { 1438797ac58cSKevin Wolf int nr_iov, c; 1439797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1440797ac58cSKevin Wolf 14414c7b7e9bSMax Reitz ctx->blk = blk; 144237546ff2SEric Blake while ((c = getopt(argc, argv, "CP:iqv")) != -1) { 1443797ac58cSKevin Wolf switch (c) { 1444797ac58cSKevin Wolf case 'C': 1445dc38852aSEric Blake ctx->Cflag = true; 1446797ac58cSKevin Wolf break; 1447797ac58cSKevin Wolf case 'P': 1448dc38852aSEric Blake ctx->Pflag = true; 1449797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1450797ac58cSKevin Wolf if (ctx->pattern < 0) { 1451797ac58cSKevin Wolf g_free(ctx); 1452b32d7a39SMax Reitz return -EINVAL; 1453797ac58cSKevin Wolf } 1454797ac58cSKevin Wolf break; 145537546ff2SEric Blake case 'i': 145637546ff2SEric Blake printf("injecting invalid read request\n"); 145737546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 145837546ff2SEric Blake g_free(ctx); 1459b32d7a39SMax Reitz return 0; 1460797ac58cSKevin Wolf case 'q': 1461dc38852aSEric Blake ctx->qflag = true; 1462797ac58cSKevin Wolf break; 1463797ac58cSKevin Wolf case 'v': 1464dc38852aSEric Blake ctx->vflag = true; 1465797ac58cSKevin Wolf break; 1466797ac58cSKevin Wolf default: 1467797ac58cSKevin Wolf g_free(ctx); 1468b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1469b32d7a39SMax Reitz return -EINVAL; 1470797ac58cSKevin Wolf } 1471797ac58cSKevin Wolf } 1472797ac58cSKevin Wolf 1473797ac58cSKevin Wolf if (optind > argc - 2) { 1474797ac58cSKevin Wolf g_free(ctx); 1475b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1476b32d7a39SMax Reitz return -EINVAL; 1477797ac58cSKevin Wolf } 1478797ac58cSKevin Wolf 1479797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1480797ac58cSKevin Wolf if (ctx->offset < 0) { 1481b32d7a39SMax Reitz int ret = ctx->offset; 1482b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1483797ac58cSKevin Wolf g_free(ctx); 1484b32d7a39SMax Reitz return ret; 1485797ac58cSKevin Wolf } 1486797ac58cSKevin Wolf optind++; 1487797ac58cSKevin Wolf 1488797ac58cSKevin Wolf nr_iov = argc - optind; 14894c7b7e9bSMax Reitz ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab); 1490797ac58cSKevin Wolf if (ctx->buf == NULL) { 1491556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1492797ac58cSKevin Wolf g_free(ctx); 1493b32d7a39SMax Reitz return -EINVAL; 1494797ac58cSKevin Wolf } 1495797ac58cSKevin Wolf 149650290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 14974c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 14984c7b7e9bSMax Reitz BLOCK_ACCT_READ); 14997b3f9712SEric Blake blk_aio_preadv(blk, ctx->offset, &ctx->qiov, 0, aio_read_done, ctx); 1500b32d7a39SMax Reitz return 0; 1501797ac58cSKevin Wolf } 1502797ac58cSKevin Wolf 1503797ac58cSKevin Wolf static void aio_write_help(void) 1504797ac58cSKevin Wolf { 1505797ac58cSKevin Wolf printf( 1506797ac58cSKevin Wolf "\n" 1507797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1508797ac58cSKevin Wolf " from multiple buffers\n" 1509797ac58cSKevin Wolf "\n" 1510797ac58cSKevin Wolf " Example:\n" 1511797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1512797ac58cSKevin Wolf "\n" 1513797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1514797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1515797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1516797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1517b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1518b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1519b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1520797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1521797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1522770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 152337546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 1524797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1525c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1526d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1527797ac58cSKevin Wolf "\n"); 1528797ac58cSKevin Wolf } 1529797ac58cSKevin Wolf 1530b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1531797ac58cSKevin Wolf 1532797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1533797ac58cSKevin Wolf .name = "aio_write", 1534797ac58cSKevin Wolf .cfunc = aio_write_f, 1535887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1536797ac58cSKevin Wolf .argmin = 2, 1537797ac58cSKevin Wolf .argmax = -1, 153837546ff2SEric Blake .args = "[-Cfiquz] [-P pattern] off len [len..]", 1539797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1540797ac58cSKevin Wolf .help = aio_write_help, 1541797ac58cSKevin Wolf }; 1542797ac58cSKevin Wolf 1543b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1544797ac58cSKevin Wolf { 1545797ac58cSKevin Wolf int nr_iov, c; 1546797ac58cSKevin Wolf int pattern = 0xcd; 1547797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 15481321e008SStefan Hajnoczi BdrvRequestFlags flags = 0; 1549797ac58cSKevin Wolf 15504c7b7e9bSMax Reitz ctx->blk = blk; 155137546ff2SEric Blake while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) { 1552797ac58cSKevin Wolf switch (c) { 1553797ac58cSKevin Wolf case 'C': 1554dc38852aSEric Blake ctx->Cflag = true; 1555797ac58cSKevin Wolf break; 1556770e0e0eSEric Blake case 'f': 1557770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1558770e0e0eSEric Blake break; 1559797ac58cSKevin Wolf case 'q': 1560dc38852aSEric Blake ctx->qflag = true; 1561797ac58cSKevin Wolf break; 1562c2e001ccSEric Blake case 'u': 1563c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1564c2e001ccSEric Blake break; 1565797ac58cSKevin Wolf case 'P': 1566797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1567797ac58cSKevin Wolf if (pattern < 0) { 1568797ac58cSKevin Wolf g_free(ctx); 1569b32d7a39SMax Reitz return -EINVAL; 1570797ac58cSKevin Wolf } 1571797ac58cSKevin Wolf break; 157237546ff2SEric Blake case 'i': 157337546ff2SEric Blake printf("injecting invalid write request\n"); 157437546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 157537546ff2SEric Blake g_free(ctx); 1576b32d7a39SMax Reitz return 0; 15775ceb7765SKevin Wolf case 'z': 1578dc38852aSEric Blake ctx->zflag = true; 15795ceb7765SKevin Wolf break; 1580797ac58cSKevin Wolf default: 1581797ac58cSKevin Wolf g_free(ctx); 1582b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1583b32d7a39SMax Reitz return -EINVAL; 1584797ac58cSKevin Wolf } 1585797ac58cSKevin Wolf } 1586797ac58cSKevin Wolf 1587797ac58cSKevin Wolf if (optind > argc - 2) { 1588797ac58cSKevin Wolf g_free(ctx); 1589b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1590b32d7a39SMax Reitz return -EINVAL; 1591797ac58cSKevin Wolf } 1592797ac58cSKevin Wolf 15935ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 15945ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 15955ceb7765SKevin Wolf g_free(ctx); 1596b32d7a39SMax Reitz return -EINVAL; 15975ceb7765SKevin Wolf } 15985ceb7765SKevin Wolf 1599c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1600c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 16014ca1d340SEric Blake g_free(ctx); 1602b32d7a39SMax Reitz return -EINVAL; 1603c2e001ccSEric Blake } 1604c2e001ccSEric Blake 16055ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 16065ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 16075ceb7765SKevin Wolf g_free(ctx); 1608b32d7a39SMax Reitz return -EINVAL; 16095ceb7765SKevin Wolf } 16105ceb7765SKevin Wolf 1611797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1612797ac58cSKevin Wolf if (ctx->offset < 0) { 1613b32d7a39SMax Reitz int ret = ctx->offset; 1614b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1615797ac58cSKevin Wolf g_free(ctx); 1616b32d7a39SMax Reitz return ret; 1617797ac58cSKevin Wolf } 1618797ac58cSKevin Wolf optind++; 1619797ac58cSKevin Wolf 16205ceb7765SKevin Wolf if (ctx->zflag) { 16215ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 16225ceb7765SKevin Wolf if (count < 0) { 16235ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 16240e01b76eSKevin Wolf g_free(ctx); 1625b32d7a39SMax Reitz return count; 16265ceb7765SKevin Wolf } 16275ceb7765SKevin Wolf 16285ceb7765SKevin Wolf ctx->qiov.size = count; 1629d004bd52SEric Blake blk_aio_pwrite_zeroes(blk, ctx->offset, count, flags, aio_write_done, 1630770e0e0eSEric Blake ctx); 16315ceb7765SKevin Wolf } else { 1632797ac58cSKevin Wolf nr_iov = argc - optind; 16335ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 16345ceb7765SKevin Wolf pattern); 1635797ac58cSKevin Wolf if (ctx->buf == NULL) { 1636556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1637797ac58cSKevin Wolf g_free(ctx); 1638b32d7a39SMax Reitz return -EINVAL; 1639797ac58cSKevin Wolf } 1640797ac58cSKevin Wolf 164150290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 16424c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 16434c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 16445ceb7765SKevin Wolf 1645770e0e0eSEric Blake blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, flags, aio_write_done, 1646770e0e0eSEric Blake ctx); 16475ceb7765SKevin Wolf } 1648b32d7a39SMax Reitz 1649b32d7a39SMax Reitz return 0; 1650797ac58cSKevin Wolf } 1651797ac58cSKevin Wolf 1652b32d7a39SMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1653797ac58cSKevin Wolf { 1654556c2b60SAlberto Garcia BlockAcctCookie cookie; 1655556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 16564c7b7e9bSMax Reitz blk_drain_all(); 1657556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1658b32d7a39SMax Reitz return 0; 1659797ac58cSKevin Wolf } 1660797ac58cSKevin Wolf 1661797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1662797ac58cSKevin Wolf .name = "aio_flush", 1663797ac58cSKevin Wolf .cfunc = aio_flush_f, 1664797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1665797ac58cSKevin Wolf }; 1666797ac58cSKevin Wolf 1667b32d7a39SMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1668797ac58cSKevin Wolf { 1669b32d7a39SMax Reitz return blk_flush(blk); 1670797ac58cSKevin Wolf } 1671797ac58cSKevin Wolf 1672797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1673797ac58cSKevin Wolf .name = "flush", 1674797ac58cSKevin Wolf .altname = "f", 1675797ac58cSKevin Wolf .cfunc = flush_f, 1676797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1677797ac58cSKevin Wolf }; 1678797ac58cSKevin Wolf 167942ba0225SVladimir Sementsov-Ogievskiy static int truncate_f(BlockBackend *blk, int argc, char **argv); 168042ba0225SVladimir Sementsov-Ogievskiy static const cmdinfo_t truncate_cmd = { 168142ba0225SVladimir Sementsov-Ogievskiy .name = "truncate", 168242ba0225SVladimir Sementsov-Ogievskiy .altname = "t", 168342ba0225SVladimir Sementsov-Ogievskiy .cfunc = truncate_f, 168442ba0225SVladimir Sementsov-Ogievskiy .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 168542ba0225SVladimir Sementsov-Ogievskiy .argmin = 1, 168642ba0225SVladimir Sementsov-Ogievskiy .argmax = 3, 168742ba0225SVladimir Sementsov-Ogievskiy .args = "[-m prealloc_mode] off", 168842ba0225SVladimir Sementsov-Ogievskiy .oneline = "truncates the current file at the given offset", 168942ba0225SVladimir Sementsov-Ogievskiy }; 169042ba0225SVladimir Sementsov-Ogievskiy 1691b32d7a39SMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1692797ac58cSKevin Wolf { 1693ed3d2ec9SMax Reitz Error *local_err = NULL; 1694797ac58cSKevin Wolf int64_t offset; 169542ba0225SVladimir Sementsov-Ogievskiy int c, ret; 169642ba0225SVladimir Sementsov-Ogievskiy PreallocMode prealloc = PREALLOC_MODE_OFF; 1697797ac58cSKevin Wolf 169842ba0225SVladimir Sementsov-Ogievskiy while ((c = getopt(argc, argv, "m:")) != -1) { 169942ba0225SVladimir Sementsov-Ogievskiy switch (c) { 170042ba0225SVladimir Sementsov-Ogievskiy case 'm': 170142ba0225SVladimir Sementsov-Ogievskiy prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, 170242ba0225SVladimir Sementsov-Ogievskiy PREALLOC_MODE__MAX, NULL); 170342ba0225SVladimir Sementsov-Ogievskiy if (prealloc == PREALLOC_MODE__MAX) { 170442ba0225SVladimir Sementsov-Ogievskiy error_report("Invalid preallocation mode '%s'", optarg); 170542ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 170642ba0225SVladimir Sementsov-Ogievskiy } 170742ba0225SVladimir Sementsov-Ogievskiy break; 170842ba0225SVladimir Sementsov-Ogievskiy default: 170942ba0225SVladimir Sementsov-Ogievskiy qemuio_command_usage(&truncate_cmd); 171042ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 171142ba0225SVladimir Sementsov-Ogievskiy } 171242ba0225SVladimir Sementsov-Ogievskiy } 171342ba0225SVladimir Sementsov-Ogievskiy 171442ba0225SVladimir Sementsov-Ogievskiy offset = cvtnum(argv[optind]); 1715797ac58cSKevin Wolf if (offset < 0) { 1716a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1717b32d7a39SMax Reitz return offset; 1718797ac58cSKevin Wolf } 1719797ac58cSKevin Wolf 1720e8d04f92SMax Reitz /* 1721e8d04f92SMax Reitz * qemu-io is a debugging tool, so let us be strict here and pass 1722e8d04f92SMax Reitz * exact=true. It is better to err on the "emit more errors" side 1723e8d04f92SMax Reitz * than to be overly permissive. 1724e8d04f92SMax Reitz */ 172542ba0225SVladimir Sementsov-Ogievskiy ret = blk_truncate(blk, offset, false, prealloc, 0, &local_err); 1726797ac58cSKevin Wolf if (ret < 0) { 1727ed3d2ec9SMax Reitz error_report_err(local_err); 1728b32d7a39SMax Reitz return ret; 1729797ac58cSKevin Wolf } 1730b32d7a39SMax Reitz 1731b32d7a39SMax Reitz return 0; 1732797ac58cSKevin Wolf } 1733797ac58cSKevin Wolf 1734b32d7a39SMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1735797ac58cSKevin Wolf { 1736797ac58cSKevin Wolf int64_t size; 1737797ac58cSKevin Wolf char s1[64]; 1738797ac58cSKevin Wolf 17394c7b7e9bSMax Reitz size = blk_getlength(blk); 1740797ac58cSKevin Wolf if (size < 0) { 1741797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1742b32d7a39SMax Reitz return size; 1743797ac58cSKevin Wolf } 1744797ac58cSKevin Wolf 1745797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1746797ac58cSKevin Wolf printf("%s\n", s1); 1747b32d7a39SMax Reitz return 0; 1748797ac58cSKevin Wolf } 1749797ac58cSKevin Wolf 1750797ac58cSKevin Wolf 1751797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1752797ac58cSKevin Wolf .name = "length", 1753797ac58cSKevin Wolf .altname = "l", 1754797ac58cSKevin Wolf .cfunc = length_f, 1755797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1756797ac58cSKevin Wolf }; 1757797ac58cSKevin Wolf 1758797ac58cSKevin Wolf 1759b32d7a39SMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1760797ac58cSKevin Wolf { 17614c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1762797ac58cSKevin Wolf BlockDriverInfo bdi; 1763a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 17641bf6e9caSAndrey Shinkevich Error *local_err = NULL; 1765797ac58cSKevin Wolf char s1[64], s2[64]; 1766797ac58cSKevin Wolf int ret; 1767797ac58cSKevin Wolf 1768797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1769797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1770797ac58cSKevin Wolf } 1771797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1772797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1773797ac58cSKevin Wolf } 1774797ac58cSKevin Wolf 1775797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1776797ac58cSKevin Wolf if (ret) { 1777b32d7a39SMax Reitz return ret; 1778797ac58cSKevin Wolf } 1779797ac58cSKevin Wolf 1780797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1781797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1782797ac58cSKevin Wolf 1783797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1784797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1785797ac58cSKevin Wolf 17861bf6e9caSAndrey Shinkevich spec_info = bdrv_get_specific_info(bs, &local_err); 17871bf6e9caSAndrey Shinkevich if (local_err) { 17881bf6e9caSAndrey Shinkevich error_report_err(local_err); 17891bf6e9caSAndrey Shinkevich return -EIO; 17901bf6e9caSAndrey Shinkevich } 1791a8d8ecb7SMax Reitz if (spec_info) { 17923716470bSHanna Reitz bdrv_image_info_specific_dump(spec_info, 179376c9e975SHanna Reitz "Format specific information:\n", 179476c9e975SHanna Reitz 0); 1795a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1796a8d8ecb7SMax Reitz } 1797b32d7a39SMax Reitz 1798b32d7a39SMax Reitz return 0; 1799797ac58cSKevin Wolf } 1800797ac58cSKevin Wolf 1801797ac58cSKevin Wolf 1802797ac58cSKevin Wolf 1803797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1804797ac58cSKevin Wolf .name = "info", 1805797ac58cSKevin Wolf .altname = "i", 1806797ac58cSKevin Wolf .cfunc = info_f, 1807797ac58cSKevin Wolf .oneline = "prints information about the current file", 1808797ac58cSKevin Wolf }; 1809797ac58cSKevin Wolf 1810797ac58cSKevin Wolf static void discard_help(void) 1811797ac58cSKevin Wolf { 1812797ac58cSKevin Wolf printf( 1813797ac58cSKevin Wolf "\n" 1814797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1815797ac58cSKevin Wolf "\n" 1816797ac58cSKevin Wolf " Example:\n" 1817797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1818797ac58cSKevin Wolf "\n" 1819797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1820797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1821797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1822797ac58cSKevin Wolf "\n"); 1823797ac58cSKevin Wolf } 1824797ac58cSKevin Wolf 1825b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1826797ac58cSKevin Wolf 1827797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1828797ac58cSKevin Wolf .name = "discard", 1829797ac58cSKevin Wolf .altname = "d", 1830797ac58cSKevin Wolf .cfunc = discard_f, 1831887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1832797ac58cSKevin Wolf .argmin = 2, 1833797ac58cSKevin Wolf .argmax = -1, 1834797ac58cSKevin Wolf .args = "[-Cq] off len", 1835797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1836797ac58cSKevin Wolf .help = discard_help, 1837797ac58cSKevin Wolf }; 1838797ac58cSKevin Wolf 1839b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1840797ac58cSKevin Wolf { 184150290c00SAlex Bennée struct timespec t1, t2; 1842dc38852aSEric Blake bool Cflag = false, qflag = false; 1843797ac58cSKevin Wolf int c, ret; 1844f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1845797ac58cSKevin Wolf 1846b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1847797ac58cSKevin Wolf switch (c) { 1848797ac58cSKevin Wolf case 'C': 1849dc38852aSEric Blake Cflag = true; 1850797ac58cSKevin Wolf break; 1851797ac58cSKevin Wolf case 'q': 1852dc38852aSEric Blake qflag = true; 1853797ac58cSKevin Wolf break; 1854797ac58cSKevin Wolf default: 1855b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1856b32d7a39SMax Reitz return -EINVAL; 1857797ac58cSKevin Wolf } 1858797ac58cSKevin Wolf } 1859797ac58cSKevin Wolf 1860797ac58cSKevin Wolf if (optind != argc - 2) { 1861b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1862b32d7a39SMax Reitz return -EINVAL; 1863797ac58cSKevin Wolf } 1864797ac58cSKevin Wolf 1865797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1866797ac58cSKevin Wolf if (offset < 0) { 1867a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1868b32d7a39SMax Reitz return offset; 1869797ac58cSKevin Wolf } 1870797ac58cSKevin Wolf 1871797ac58cSKevin Wolf optind++; 1872f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1873f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1874f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1875b32d7a39SMax Reitz return bytes; 187641ae31e3SAlberto Garcia } else if (bytes > BDRV_REQUEST_MAX_BYTES) { 18779b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 187841ae31e3SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1879b32d7a39SMax Reitz return -EINVAL; 1880797ac58cSKevin Wolf } 1881797ac58cSKevin Wolf 188250290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1883f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 188450290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1885797ac58cSKevin Wolf 1886797ac58cSKevin Wolf if (ret < 0) { 1887797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1888b32d7a39SMax Reitz return ret; 1889797ac58cSKevin Wolf } 1890797ac58cSKevin Wolf 1891797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1892797ac58cSKevin Wolf if (!qflag) { 1893797ac58cSKevin Wolf t2 = tsub(t2, t1); 1894f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1895797ac58cSKevin Wolf } 1896b32d7a39SMax Reitz 1897b32d7a39SMax Reitz return 0; 1898797ac58cSKevin Wolf } 1899797ac58cSKevin Wolf 1900b32d7a39SMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1901797ac58cSKevin Wolf { 19024c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1903d6a644bbSEric Blake int64_t offset, start, remaining, count; 1904797ac58cSKevin Wolf char s1[64]; 1905d6a644bbSEric Blake int ret; 1906d6a644bbSEric Blake int64_t num, sum_alloc; 1907797ac58cSKevin Wolf 1908d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1909797ac58cSKevin Wolf if (offset < 0) { 1910a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1911b32d7a39SMax Reitz return offset; 1912797ac58cSKevin Wolf } 1913797ac58cSKevin Wolf 1914797ac58cSKevin Wolf if (argc == 3) { 19154401fdc7SEric Blake count = cvtnum(argv[2]); 19164401fdc7SEric Blake if (count < 0) { 19174401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1918b32d7a39SMax Reitz return count; 1919797ac58cSKevin Wolf } 1920797ac58cSKevin Wolf } else { 19214401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1922797ac58cSKevin Wolf } 1923797ac58cSKevin Wolf 1924d6a644bbSEric Blake remaining = count; 1925797ac58cSKevin Wolf sum_alloc = 0; 1926797ac58cSKevin Wolf while (remaining) { 1927d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1928d663640cSPaolo Bonzini if (ret < 0) { 1929d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1930b32d7a39SMax Reitz return ret; 1931d663640cSPaolo Bonzini } 1932d6a644bbSEric Blake offset += num; 1933797ac58cSKevin Wolf remaining -= num; 1934797ac58cSKevin Wolf if (ret) { 1935797ac58cSKevin Wolf sum_alloc += num; 1936797ac58cSKevin Wolf } 1937797ac58cSKevin Wolf if (num == 0) { 1938d6a644bbSEric Blake count -= remaining; 1939797ac58cSKevin Wolf remaining = 0; 1940797ac58cSKevin Wolf } 1941797ac58cSKevin Wolf } 1942797ac58cSKevin Wolf 1943d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1944797ac58cSKevin Wolf 19454401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 1946d6a644bbSEric Blake sum_alloc, count, s1); 1947b32d7a39SMax Reitz return 0; 1948797ac58cSKevin Wolf } 1949797ac58cSKevin Wolf 1950797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 1951797ac58cSKevin Wolf .name = "alloc", 1952797ac58cSKevin Wolf .altname = "a", 1953797ac58cSKevin Wolf .argmin = 1, 1954797ac58cSKevin Wolf .argmax = 2, 1955797ac58cSKevin Wolf .cfunc = alloc_f, 19564401fdc7SEric Blake .args = "offset [count]", 19574401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 1958797ac58cSKevin Wolf }; 1959797ac58cSKevin Wolf 1960797ac58cSKevin Wolf 1961d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 1962d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 1963797ac58cSKevin Wolf { 1964d6a644bbSEric Blake int64_t num; 1965797ac58cSKevin Wolf int ret, firstret; 1966797ac58cSKevin Wolf 1967087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 1968797ac58cSKevin Wolf if (ret < 0) { 1969797ac58cSKevin Wolf return ret; 1970797ac58cSKevin Wolf } 1971797ac58cSKevin Wolf 1972797ac58cSKevin Wolf firstret = ret; 1973797ac58cSKevin Wolf *pnum = num; 1974797ac58cSKevin Wolf 1975d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 1976d6a644bbSEric Blake offset += num; 1977d6a644bbSEric Blake bytes -= num; 1978797ac58cSKevin Wolf 1979087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 19804b25bbc4SMax Reitz if (ret == firstret && num) { 1981797ac58cSKevin Wolf *pnum += num; 1982797ac58cSKevin Wolf } else { 1983797ac58cSKevin Wolf break; 1984797ac58cSKevin Wolf } 1985797ac58cSKevin Wolf } 1986797ac58cSKevin Wolf 1987797ac58cSKevin Wolf return firstret; 1988797ac58cSKevin Wolf } 1989797ac58cSKevin Wolf 1990b32d7a39SMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 1991797ac58cSKevin Wolf { 1992d6a644bbSEric Blake int64_t offset, bytes; 19936f3c90afSEric Blake char s1[64], s2[64]; 1994797ac58cSKevin Wolf int64_t num; 1995797ac58cSKevin Wolf int ret; 1996797ac58cSKevin Wolf const char *retstr; 1997797ac58cSKevin Wolf 1998797ac58cSKevin Wolf offset = 0; 1999d6a644bbSEric Blake bytes = blk_getlength(blk); 2000d6a644bbSEric Blake if (bytes < 0) { 2001d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 2002b32d7a39SMax Reitz return bytes; 20034c7b7e9bSMax Reitz } 20044c7b7e9bSMax Reitz 2005d6a644bbSEric Blake while (bytes) { 2006d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 2007797ac58cSKevin Wolf if (ret < 0) { 2008797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 2009b32d7a39SMax Reitz return ret; 20104b25bbc4SMax Reitz } else if (!num) { 20114b25bbc4SMax Reitz error_report("Unexpected end of image"); 2012b32d7a39SMax Reitz return -EIO; 2013797ac58cSKevin Wolf } 2014797ac58cSKevin Wolf 2015797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 2016d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 2017d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 20186f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 2019d6a644bbSEric Blake s1, num, retstr, s2, offset); 2020797ac58cSKevin Wolf 2021797ac58cSKevin Wolf offset += num; 2022d6a644bbSEric Blake bytes -= num; 2023d6a644bbSEric Blake } 2024b32d7a39SMax Reitz 2025b32d7a39SMax Reitz return 0; 2026797ac58cSKevin Wolf } 2027797ac58cSKevin Wolf 2028797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 2029797ac58cSKevin Wolf .name = "map", 2030797ac58cSKevin Wolf .argmin = 0, 2031797ac58cSKevin Wolf .argmax = 0, 2032797ac58cSKevin Wolf .cfunc = map_f, 2033797ac58cSKevin Wolf .args = "", 2034797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 2035797ac58cSKevin Wolf }; 2036797ac58cSKevin Wolf 20375bbd2e59SKevin Wolf static void reopen_help(void) 20385bbd2e59SKevin Wolf { 20395bbd2e59SKevin Wolf printf( 20405bbd2e59SKevin Wolf "\n" 20415bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 20425bbd2e59SKevin Wolf "\n" 20435bbd2e59SKevin Wolf " Example:\n" 20445bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 20455bbd2e59SKevin Wolf "\n" 20465bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 2047ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 20485bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 20495bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 20505bbd2e59SKevin Wolf "\n"); 20515bbd2e59SKevin Wolf } 20525bbd2e59SKevin Wolf 2053b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv); 20545bbd2e59SKevin Wolf 20555bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 20565bbd2e59SKevin Wolf .name = "reopen", 20575bbd2e59SKevin Wolf .merge_lists = true, 20585bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 20595bbd2e59SKevin Wolf .desc = { 20605bbd2e59SKevin Wolf /* no elements => accept any params */ 20615bbd2e59SKevin Wolf { /* end of list */ } 20625bbd2e59SKevin Wolf }, 20635bbd2e59SKevin Wolf }; 20645bbd2e59SKevin Wolf 20655bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 20665bbd2e59SKevin Wolf .name = "reopen", 20675bbd2e59SKevin Wolf .argmin = 0, 20685bbd2e59SKevin Wolf .argmax = -1, 20695bbd2e59SKevin Wolf .cfunc = reopen_f, 2070ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 20715bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 20725bbd2e59SKevin Wolf .help = reopen_help, 20735bbd2e59SKevin Wolf }; 20745bbd2e59SKevin Wolf 2075b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv) 20765bbd2e59SKevin Wolf { 20775bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 20785bbd2e59SKevin Wolf QemuOpts *qopts; 20795bbd2e59SKevin Wolf QDict *opts; 20805bbd2e59SKevin Wolf int c; 20815bbd2e59SKevin Wolf int flags = bs->open_flags; 208219dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 2083ea92203cSKevin Wolf bool has_rw_option = false; 2084dc900c35SAlberto Garcia bool has_cache_option = false; 20855bbd2e59SKevin Wolf Error *local_err = NULL; 20865bbd2e59SKevin Wolf 2087ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 20885bbd2e59SKevin Wolf switch (c) { 20895bbd2e59SKevin Wolf case 'c': 209019dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 20915bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2092b32d7a39SMax Reitz return -EINVAL; 20935bbd2e59SKevin Wolf } 2094dc900c35SAlberto Garcia has_cache_option = true; 20955bbd2e59SKevin Wolf break; 20965bbd2e59SKevin Wolf case 'o': 20975bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 20985bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2099b32d7a39SMax Reitz return -EINVAL; 21005bbd2e59SKevin Wolf } 21015bbd2e59SKevin Wolf break; 21025bbd2e59SKevin Wolf case 'r': 2103ea92203cSKevin Wolf if (has_rw_option) { 2104ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2105b32d7a39SMax Reitz return -EINVAL; 2106ea92203cSKevin Wolf } 21075bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2108ea92203cSKevin Wolf has_rw_option = true; 2109ea92203cSKevin Wolf break; 2110ea92203cSKevin Wolf case 'w': 2111ea92203cSKevin Wolf if (has_rw_option) { 2112ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2113b32d7a39SMax Reitz return -EINVAL; 2114ea92203cSKevin Wolf } 2115ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 2116ea92203cSKevin Wolf has_rw_option = true; 21175bbd2e59SKevin Wolf break; 21185bbd2e59SKevin Wolf default: 21195bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2120b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2121b32d7a39SMax Reitz return -EINVAL; 21225bbd2e59SKevin Wolf } 21235bbd2e59SKevin Wolf } 21245bbd2e59SKevin Wolf 21255bbd2e59SKevin Wolf if (optind != argc) { 21265bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2127b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2128b32d7a39SMax Reitz return -EINVAL; 21295bbd2e59SKevin Wolf } 21305bbd2e59SKevin Wolf 2131a8003ec4SAlberto Garcia if (!writethrough != blk_enable_write_cache(blk) && 213219dbecdcSKevin Wolf blk_get_attached_dev(blk)) 213319dbecdcSKevin Wolf { 213419dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 213519dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 2136b32d7a39SMax Reitz return -EBUSY; 213719dbecdcSKevin Wolf } 213819dbecdcSKevin Wolf 2139f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2140f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2141f3adefb2SKevin Wolf 2142f3adefb2SKevin Wolf bdrv_drain(bs); 2143f3adefb2SKevin Wolf 2144f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2145f3adefb2SKevin Wolf blk_set_perm(blk, 2146f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2147f3adefb2SKevin Wolf orig_shared_perm, 2148f3adefb2SKevin Wolf &error_abort); 2149f3adefb2SKevin Wolf } 2150f3adefb2SKevin Wolf 21515bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2152dc900c35SAlberto Garcia opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); 21535bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 21545bbd2e59SKevin Wolf 2155dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { 2156dc900c35SAlberto Garcia if (has_rw_option) { 2157dc900c35SAlberto Garcia error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); 2158dc900c35SAlberto Garcia qobject_unref(opts); 2159dc900c35SAlberto Garcia return -EINVAL; 2160dc900c35SAlberto Garcia } 2161dc900c35SAlberto Garcia } else { 2162dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); 2163dc900c35SAlberto Garcia } 2164dc900c35SAlberto Garcia 2165dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || 2166dc900c35SAlberto Garcia qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { 2167dc900c35SAlberto Garcia if (has_cache_option) { 2168dc900c35SAlberto Garcia error_report("Cannot set both -c and the cache options"); 2169dc900c35SAlberto Garcia qobject_unref(opts); 2170dc900c35SAlberto Garcia return -EINVAL; 2171dc900c35SAlberto Garcia } 2172dc900c35SAlberto Garcia } else { 2173dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); 2174dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); 2175dc900c35SAlberto Garcia } 2176dc900c35SAlberto Garcia 21776cf42ca2SKevin Wolf bdrv_reopen(bs, opts, true, &local_err); 21781a63a907SKevin Wolf 21795bbd2e59SKevin Wolf if (local_err) { 21805bbd2e59SKevin Wolf error_report_err(local_err); 2181b32d7a39SMax Reitz return -EINVAL; 21825bbd2e59SKevin Wolf } 21835bbd2e59SKevin Wolf 2184b32d7a39SMax Reitz blk_set_enable_write_cache(blk, !writethrough); 2185b32d7a39SMax Reitz return 0; 2186b32d7a39SMax Reitz } 2187b32d7a39SMax Reitz 2188b32d7a39SMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2189797ac58cSKevin Wolf { 2190797ac58cSKevin Wolf int ret; 2191797ac58cSKevin Wolf 21924c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2193797ac58cSKevin Wolf if (ret < 0) { 2194797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2195b32d7a39SMax Reitz return ret; 2196797ac58cSKevin Wolf } 2197797ac58cSKevin Wolf 2198b32d7a39SMax Reitz return 0; 2199b32d7a39SMax Reitz } 2200b32d7a39SMax Reitz 2201b32d7a39SMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 22024cc70e93SFam Zheng { 22034cc70e93SFam Zheng int ret; 22044cc70e93SFam Zheng 22054c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 22064cc70e93SFam Zheng if (ret < 0) { 22074cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 2208b32d7a39SMax Reitz return ret; 22094cc70e93SFam Zheng } 2210b32d7a39SMax Reitz 2211b32d7a39SMax Reitz return 0; 22124cc70e93SFam Zheng } 22134cc70e93SFam Zheng 2214797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2215797ac58cSKevin Wolf .name = "break", 2216797ac58cSKevin Wolf .argmin = 2, 2217797ac58cSKevin Wolf .argmax = 2, 2218797ac58cSKevin Wolf .cfunc = break_f, 2219797ac58cSKevin Wolf .args = "event tag", 2220797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2221797ac58cSKevin Wolf "request as tag", 2222797ac58cSKevin Wolf }; 2223797ac58cSKevin Wolf 22244cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 22254cc70e93SFam Zheng .name = "remove_break", 22264cc70e93SFam Zheng .argmin = 1, 22274cc70e93SFam Zheng .argmax = 1, 22284cc70e93SFam Zheng .cfunc = remove_break_f, 22294cc70e93SFam Zheng .args = "tag", 22304cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 22314cc70e93SFam Zheng }; 22324cc70e93SFam Zheng 2233b32d7a39SMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2234797ac58cSKevin Wolf { 2235797ac58cSKevin Wolf int ret; 2236797ac58cSKevin Wolf 22374c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2238797ac58cSKevin Wolf if (ret < 0) { 2239797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2240b32d7a39SMax Reitz return ret; 2241797ac58cSKevin Wolf } 2242b32d7a39SMax Reitz 2243b32d7a39SMax Reitz return 0; 2244797ac58cSKevin Wolf } 2245797ac58cSKevin Wolf 2246797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2247797ac58cSKevin Wolf .name = "resume", 2248797ac58cSKevin Wolf .argmin = 1, 2249797ac58cSKevin Wolf .argmax = 1, 2250797ac58cSKevin Wolf .cfunc = resume_f, 2251797ac58cSKevin Wolf .args = "tag", 2252797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2253797ac58cSKevin Wolf }; 2254797ac58cSKevin Wolf 2255b32d7a39SMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2256797ac58cSKevin Wolf { 22574c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 22584c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2259797ac58cSKevin Wolf } 2260b32d7a39SMax Reitz return 0; 2261797ac58cSKevin Wolf } 2262797ac58cSKevin Wolf 2263797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2264797ac58cSKevin Wolf .name = "wait_break", 2265797ac58cSKevin Wolf .argmin = 1, 2266797ac58cSKevin Wolf .argmax = 1, 2267797ac58cSKevin Wolf .cfunc = wait_break_f, 2268797ac58cSKevin Wolf .args = "tag", 2269797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2270797ac58cSKevin Wolf }; 2271797ac58cSKevin Wolf 2272b32d7a39SMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2273797ac58cSKevin Wolf { 2274797ac58cSKevin Wolf abort(); 2275797ac58cSKevin Wolf } 2276797ac58cSKevin Wolf 2277797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2278797ac58cSKevin Wolf .name = "abort", 2279797ac58cSKevin Wolf .cfunc = abort_f, 2280797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2281797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2282797ac58cSKevin Wolf }; 2283797ac58cSKevin Wolf 22840e82dc7bSMax Reitz static void sigraise_help(void) 22850e82dc7bSMax Reitz { 22860e82dc7bSMax Reitz printf( 22870e82dc7bSMax Reitz "\n" 22880e82dc7bSMax Reitz " raises the given signal\n" 22890e82dc7bSMax Reitz "\n" 22900e82dc7bSMax Reitz " Example:\n" 22910e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 22920e82dc7bSMax Reitz "\n" 22930e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 22940e82dc7bSMax Reitz " given to sigraise.\n" 22950e82dc7bSMax Reitz "\n", SIGTERM); 22960e82dc7bSMax Reitz } 22970e82dc7bSMax Reitz 2298b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 22990e82dc7bSMax Reitz 23000e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 23010e82dc7bSMax Reitz .name = "sigraise", 23020e82dc7bSMax Reitz .cfunc = sigraise_f, 23030e82dc7bSMax Reitz .argmin = 1, 23040e82dc7bSMax Reitz .argmax = 1, 23050e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 23060e82dc7bSMax Reitz .args = "signal", 23070e82dc7bSMax Reitz .oneline = "raises a signal", 23080e82dc7bSMax Reitz .help = sigraise_help, 23090e82dc7bSMax Reitz }; 23100e82dc7bSMax Reitz 2311b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 23120e82dc7bSMax Reitz { 23139b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 23140e82dc7bSMax Reitz if (sig < 0) { 2315a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2316b32d7a39SMax Reitz return sig; 23179b0beaf3SJohn Snow } else if (sig > NSIG) { 23189b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 23199b0beaf3SJohn Snow argv[1]); 2320b32d7a39SMax Reitz return -EINVAL; 23210e82dc7bSMax Reitz } 23220e82dc7bSMax Reitz 23230e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 23240e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 23250e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 23260e82dc7bSMax Reitz fflush(stdout); 23270e82dc7bSMax Reitz fflush(stderr); 23280e82dc7bSMax Reitz 23290e82dc7bSMax Reitz raise(sig); 2330b32d7a39SMax Reitz 2331b32d7a39SMax Reitz return 0; 23320e82dc7bSMax Reitz } 23330e82dc7bSMax Reitz 2334cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2335cd33d02aSKevin Wolf { 2336cd33d02aSKevin Wolf bool *expired = opaque; 2337cd33d02aSKevin Wolf *expired = true; 2338cd33d02aSKevin Wolf } 2339cd33d02aSKevin Wolf 2340b32d7a39SMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2341cd33d02aSKevin Wolf { 2342cd33d02aSKevin Wolf char *endptr; 2343cd33d02aSKevin Wolf long ms; 2344cd33d02aSKevin Wolf struct QEMUTimer *timer; 2345cd33d02aSKevin Wolf bool expired = false; 2346cd33d02aSKevin Wolf 2347cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2348cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2349cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2350b32d7a39SMax Reitz return -EINVAL; 2351cd33d02aSKevin Wolf } 2352cd33d02aSKevin Wolf 2353cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2354cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2355cd33d02aSKevin Wolf 2356cd33d02aSKevin Wolf while (!expired) { 2357cd33d02aSKevin Wolf main_loop_wait(false); 2358cd33d02aSKevin Wolf } 2359cd33d02aSKevin Wolf 2360cd33d02aSKevin Wolf timer_free(timer); 2361b32d7a39SMax Reitz return 0; 2362cd33d02aSKevin Wolf } 2363cd33d02aSKevin Wolf 2364cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2365cd33d02aSKevin Wolf .name = "sleep", 2366cd33d02aSKevin Wolf .argmin = 1, 2367cd33d02aSKevin Wolf .argmax = 1, 2368cd33d02aSKevin Wolf .cfunc = sleep_f, 2369cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2370cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2371cd33d02aSKevin Wolf }; 2372cd33d02aSKevin Wolf 2373f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2374f18a834aSKevin Wolf { 2375f18a834aSKevin Wolf printf("%s ", cmd); 2376f18a834aSKevin Wolf 2377f18a834aSKevin Wolf if (ct->args) { 2378f18a834aSKevin Wolf printf("%s ", ct->args); 2379f18a834aSKevin Wolf } 2380f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2381f18a834aSKevin Wolf } 2382f18a834aSKevin Wolf 2383f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2384f18a834aSKevin Wolf { 2385f18a834aSKevin Wolf help_oneline(cmd, ct); 2386f18a834aSKevin Wolf if (ct->help) { 2387f18a834aSKevin Wolf ct->help(); 2388f18a834aSKevin Wolf } 2389f18a834aSKevin Wolf } 2390f18a834aSKevin Wolf 2391f18a834aSKevin Wolf static void help_all(void) 2392f18a834aSKevin Wolf { 2393f18a834aSKevin Wolf const cmdinfo_t *ct; 2394f18a834aSKevin Wolf 2395f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2396f18a834aSKevin Wolf help_oneline(ct->name, ct); 2397f18a834aSKevin Wolf } 2398f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2399f18a834aSKevin Wolf } 2400f18a834aSKevin Wolf 2401b32d7a39SMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2402f18a834aSKevin Wolf { 2403f18a834aSKevin Wolf const cmdinfo_t *ct; 2404f18a834aSKevin Wolf 2405da16f4b8SDr. David Alan Gilbert if (argc < 2) { 2406f18a834aSKevin Wolf help_all(); 2407b32d7a39SMax Reitz return 0; 2408f18a834aSKevin Wolf } 2409f18a834aSKevin Wolf 2410f18a834aSKevin Wolf ct = find_command(argv[1]); 2411f18a834aSKevin Wolf if (ct == NULL) { 2412f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2413b32d7a39SMax Reitz return -EINVAL; 2414f18a834aSKevin Wolf } 2415f18a834aSKevin Wolf 2416f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2417b32d7a39SMax Reitz return 0; 2418f18a834aSKevin Wolf } 2419f18a834aSKevin Wolf 2420f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2421f18a834aSKevin Wolf .name = "help", 2422f18a834aSKevin Wolf .altname = "?", 2423f18a834aSKevin Wolf .cfunc = help_f, 2424f18a834aSKevin Wolf .argmin = 0, 2425f18a834aSKevin Wolf .argmax = 1, 2426f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2427f18a834aSKevin Wolf .args = "[command]", 2428f18a834aSKevin Wolf .oneline = "help for one or all commands", 2429f18a834aSKevin Wolf }; 2430f18a834aSKevin Wolf 243178632a3dSVladimir Sementsov-Ogievskiy /* 243278632a3dSVladimir Sementsov-Ogievskiy * Called with aio context of blk acquired. Or with qemu_get_aio_context() 243378632a3dSVladimir Sementsov-Ogievskiy * context acquired if blk is NULL. 243478632a3dSVladimir Sementsov-Ogievskiy */ 2435b32d7a39SMax Reitz int qemuio_command(BlockBackend *blk, const char *cmd) 2436dd583296SKevin Wolf { 2437dd583296SKevin Wolf char *input; 2438dd583296SKevin Wolf const cmdinfo_t *ct; 2439dd583296SKevin Wolf char **v; 2440dd583296SKevin Wolf int c; 2441b32d7a39SMax Reitz int ret = 0; 2442dd583296SKevin Wolf 2443dd583296SKevin Wolf input = g_strdup(cmd); 2444dd583296SKevin Wolf v = breakline(input, &c); 2445dd583296SKevin Wolf if (c) { 2446dd583296SKevin Wolf ct = find_command(v[0]); 2447dd583296SKevin Wolf if (ct) { 2448b32d7a39SMax Reitz ret = command(blk, ct, c, v); 2449dd583296SKevin Wolf } else { 2450dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2451b32d7a39SMax Reitz ret = -EINVAL; 2452dd583296SKevin Wolf } 2453dd583296SKevin Wolf } 2454dd583296SKevin Wolf g_free(input); 2455dd583296SKevin Wolf g_free(v); 2456b32d7a39SMax Reitz 2457b32d7a39SMax Reitz return ret; 2458dd583296SKevin Wolf } 2459dd583296SKevin Wolf 2460797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2461797ac58cSKevin Wolf { 2462797ac58cSKevin Wolf /* initialize commands */ 2463c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2464c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2465c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2466c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2467c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2468c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2469c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2470c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2471c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2472c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2473c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2474c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2475c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2476c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2477c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 24785bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2479c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 24804cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2481c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2482c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2483c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2484cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 24850e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2486797ac58cSKevin Wolf } 2487