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 34100e2a04cSStefan Hajnoczi static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern, 34200e2a04cSStefan Hajnoczi bool register_buf) 343797ac58cSKevin Wolf { 344797ac58cSKevin Wolf void *buf; 345797ac58cSKevin Wolf 346797ac58cSKevin Wolf if (qemuio_misalign) { 347797ac58cSKevin Wolf len += MISALIGN_OFFSET; 348797ac58cSKevin Wolf } 3494c7b7e9bSMax Reitz buf = blk_blockalign(blk, len); 350797ac58cSKevin Wolf memset(buf, pattern, len); 35100e2a04cSStefan Hajnoczi if (register_buf) { 35200e2a04cSStefan Hajnoczi blk_register_buf(blk, buf, len, &error_abort); 35300e2a04cSStefan Hajnoczi } 354797ac58cSKevin Wolf if (qemuio_misalign) { 355797ac58cSKevin Wolf buf += MISALIGN_OFFSET; 356797ac58cSKevin Wolf } 357797ac58cSKevin Wolf return buf; 358797ac58cSKevin Wolf } 359797ac58cSKevin Wolf 36000e2a04cSStefan Hajnoczi static void qemu_io_free(BlockBackend *blk, void *p, size_t len, 36100e2a04cSStefan Hajnoczi bool unregister_buf) 362797ac58cSKevin Wolf { 363797ac58cSKevin Wolf if (qemuio_misalign) { 364797ac58cSKevin Wolf p -= MISALIGN_OFFSET; 36500e2a04cSStefan Hajnoczi len += MISALIGN_OFFSET; 36600e2a04cSStefan Hajnoczi } 36700e2a04cSStefan Hajnoczi if (unregister_buf) { 36800e2a04cSStefan Hajnoczi blk_unregister_buf(blk, p, len); 369797ac58cSKevin Wolf } 370797ac58cSKevin Wolf qemu_vfree(p); 371797ac58cSKevin Wolf } 372797ac58cSKevin Wolf 3734d731510SDenis Plotnikov /* 3744d731510SDenis Plotnikov * qemu_io_alloc_from_file() 3754d731510SDenis Plotnikov * 3764d731510SDenis Plotnikov * Allocates the buffer and populates it with the content of the given file 3774d731510SDenis Plotnikov * up to @len bytes. If the file length is less than @len, then the buffer 3784d731510SDenis Plotnikov * is populated with the file content cyclically. 3794d731510SDenis Plotnikov * 3804d731510SDenis Plotnikov * @blk - the block backend where the buffer content is going to be written to 3814d731510SDenis Plotnikov * @len - the buffer length 3824d731510SDenis Plotnikov * @file_name - the file to read the content from 38300e2a04cSStefan Hajnoczi * @register_buf - call blk_register_buf() 3844d731510SDenis Plotnikov * 3854d731510SDenis Plotnikov * Returns: the buffer pointer on success 3864d731510SDenis Plotnikov * NULL on error 3874d731510SDenis Plotnikov */ 3884d731510SDenis Plotnikov static void *qemu_io_alloc_from_file(BlockBackend *blk, size_t len, 38900e2a04cSStefan Hajnoczi const char *file_name, bool register_buf) 3904d731510SDenis Plotnikov { 39100e2a04cSStefan Hajnoczi size_t alloc_len = len + (qemuio_misalign ? MISALIGN_OFFSET : 0); 39200e2a04cSStefan Hajnoczi char *alloc_buf, *buf, *end; 3934d731510SDenis Plotnikov FILE *f = fopen(file_name, "r"); 3944d731510SDenis Plotnikov int pattern_len; 3954d731510SDenis Plotnikov 3964d731510SDenis Plotnikov if (!f) { 3974d731510SDenis Plotnikov perror(file_name); 3984d731510SDenis Plotnikov return NULL; 3994d731510SDenis Plotnikov } 4004d731510SDenis Plotnikov 40100e2a04cSStefan Hajnoczi alloc_buf = buf = blk_blockalign(blk, alloc_len); 4024d731510SDenis Plotnikov 4034d731510SDenis Plotnikov if (qemuio_misalign) { 4044d731510SDenis Plotnikov buf += MISALIGN_OFFSET; 4054d731510SDenis Plotnikov } 4064d731510SDenis Plotnikov 40700e2a04cSStefan Hajnoczi pattern_len = fread(buf, 1, len, f); 4084d731510SDenis Plotnikov 4094d731510SDenis Plotnikov if (ferror(f)) { 4104d731510SDenis Plotnikov perror(file_name); 4114d731510SDenis Plotnikov goto error; 4124d731510SDenis Plotnikov } 4134d731510SDenis Plotnikov 4144d731510SDenis Plotnikov if (pattern_len == 0) { 4154d731510SDenis Plotnikov fprintf(stderr, "%s: file is empty\n", file_name); 4164d731510SDenis Plotnikov goto error; 4174d731510SDenis Plotnikov } 4184d731510SDenis Plotnikov 4194d731510SDenis Plotnikov fclose(f); 420c8e68b43SKevin Wolf f = NULL; 4214d731510SDenis Plotnikov 42200e2a04cSStefan Hajnoczi if (register_buf) { 42300e2a04cSStefan Hajnoczi blk_register_buf(blk, alloc_buf, alloc_len, &error_abort); 4244d731510SDenis Plotnikov } 4254d731510SDenis Plotnikov 42600e2a04cSStefan Hajnoczi end = buf + len; 42700e2a04cSStefan Hajnoczi for (char *p = buf + pattern_len; p < end; p += pattern_len) { 42800e2a04cSStefan Hajnoczi memcpy(p, buf, MIN(pattern_len, end - p)); 42900e2a04cSStefan Hajnoczi } 43000e2a04cSStefan Hajnoczi 43100e2a04cSStefan Hajnoczi return buf; 4324d731510SDenis Plotnikov 4334d731510SDenis Plotnikov error: 43400e2a04cSStefan Hajnoczi /* 43500e2a04cSStefan Hajnoczi * This code path is only taken before blk_register_buf() is called, so 43600e2a04cSStefan Hajnoczi * hardcode the qemu_io_free() unregister_buf argument to false. 43700e2a04cSStefan Hajnoczi */ 43800e2a04cSStefan Hajnoczi qemu_io_free(blk, alloc_buf, alloc_len, false); 439c8e68b43SKevin Wolf if (f) { 440c8e68b43SKevin Wolf fclose(f); 441c8e68b43SKevin Wolf } 4424d731510SDenis Plotnikov return NULL; 4434d731510SDenis Plotnikov } 4444d731510SDenis Plotnikov 4459b0beaf3SJohn Snow static void dump_buffer(const void *buffer, int64_t offset, int64_t len) 446797ac58cSKevin Wolf { 4479b0beaf3SJohn Snow uint64_t i; 4489b0beaf3SJohn Snow int j; 449797ac58cSKevin Wolf const uint8_t *p; 450797ac58cSKevin Wolf 451797ac58cSKevin Wolf for (i = 0, p = buffer; i < len; i += 16) { 452797ac58cSKevin Wolf const uint8_t *s = p; 453797ac58cSKevin Wolf 454797ac58cSKevin Wolf printf("%08" PRIx64 ": ", offset + i); 455797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, p++) { 456797ac58cSKevin Wolf printf("%02x ", *p); 457797ac58cSKevin Wolf } 458797ac58cSKevin Wolf printf(" "); 459797ac58cSKevin Wolf for (j = 0; j < 16 && i + j < len; j++, s++) { 460797ac58cSKevin Wolf if (isalnum(*s)) { 461797ac58cSKevin Wolf printf("%c", *s); 462797ac58cSKevin Wolf } else { 463797ac58cSKevin Wolf printf("."); 464797ac58cSKevin Wolf } 465797ac58cSKevin Wolf } 466797ac58cSKevin Wolf printf("\n"); 467797ac58cSKevin Wolf } 468797ac58cSKevin Wolf } 469797ac58cSKevin Wolf 47050290c00SAlex Bennée static void print_report(const char *op, struct timespec *t, int64_t offset, 471dc38852aSEric Blake int64_t count, int64_t total, int cnt, bool Cflag) 472797ac58cSKevin Wolf { 473797ac58cSKevin Wolf char s1[64], s2[64], ts[64]; 474797ac58cSKevin Wolf 475797ac58cSKevin Wolf timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); 476797ac58cSKevin Wolf if (!Cflag) { 477797ac58cSKevin Wolf cvtstr((double)total, s1, sizeof(s1)); 478797ac58cSKevin Wolf cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); 4799b0beaf3SJohn Snow printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n", 480797ac58cSKevin Wolf op, total, count, offset); 481797ac58cSKevin Wolf printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", 482797ac58cSKevin Wolf s1, cnt, ts, s2, tdiv((double)cnt, *t)); 483797ac58cSKevin Wolf } else {/* bytes,ops,time,bytes/sec,ops/sec */ 4849b0beaf3SJohn Snow printf("%"PRId64",%d,%s,%.3f,%.3f\n", 485797ac58cSKevin Wolf total, cnt, ts, 486797ac58cSKevin Wolf tdiv((double)total, *t), 487797ac58cSKevin Wolf tdiv((double)cnt, *t)); 488797ac58cSKevin Wolf } 489797ac58cSKevin Wolf } 490797ac58cSKevin Wolf 491797ac58cSKevin Wolf /* 492797ac58cSKevin Wolf * Parse multiple length statements for vectored I/O, and construct an I/O 493797ac58cSKevin Wolf * vector matching it. 494797ac58cSKevin Wolf */ 495797ac58cSKevin Wolf static void * 4964c7b7e9bSMax Reitz create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, 49700e2a04cSStefan Hajnoczi int pattern, bool register_buf) 498797ac58cSKevin Wolf { 499797ac58cSKevin Wolf size_t *sizes = g_new0(size_t, nr_iov); 500797ac58cSKevin Wolf size_t count = 0; 501797ac58cSKevin Wolf void *buf = NULL; 502797ac58cSKevin Wolf void *p; 503797ac58cSKevin Wolf int i; 504797ac58cSKevin Wolf 505797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 506797ac58cSKevin Wolf char *arg = argv[i]; 507797ac58cSKevin Wolf int64_t len; 508797ac58cSKevin Wolf 509797ac58cSKevin Wolf len = cvtnum(arg); 510797ac58cSKevin Wolf if (len < 0) { 511a9ecfa00SJohn Snow print_cvtnum_err(len, arg); 512797ac58cSKevin Wolf goto fail; 513797ac58cSKevin Wolf } 514797ac58cSKevin Wolf 5153026c468SAlberto Garcia if (len > BDRV_REQUEST_MAX_BYTES) { 5163026c468SAlberto Garcia printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, 5173026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES); 5183026c468SAlberto Garcia goto fail; 5193026c468SAlberto Garcia } 5203026c468SAlberto Garcia 5213026c468SAlberto Garcia if (count > BDRV_REQUEST_MAX_BYTES - len) { 5223026c468SAlberto Garcia printf("The total number of bytes exceed the maximum size %" PRIu64 5233026c468SAlberto Garcia "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); 524797ac58cSKevin Wolf goto fail; 525797ac58cSKevin Wolf } 526797ac58cSKevin Wolf 527797ac58cSKevin Wolf sizes[i] = len; 528797ac58cSKevin Wolf count += len; 529797ac58cSKevin Wolf } 530797ac58cSKevin Wolf 531797ac58cSKevin Wolf qemu_iovec_init(qiov, nr_iov); 532797ac58cSKevin Wolf 53300e2a04cSStefan Hajnoczi buf = p = qemu_io_alloc(blk, count, pattern, register_buf); 534797ac58cSKevin Wolf 535797ac58cSKevin Wolf for (i = 0; i < nr_iov; i++) { 536797ac58cSKevin Wolf qemu_iovec_add(qiov, p, sizes[i]); 537797ac58cSKevin Wolf p += sizes[i]; 538797ac58cSKevin Wolf } 539797ac58cSKevin Wolf 540797ac58cSKevin Wolf fail: 541797ac58cSKevin Wolf g_free(sizes); 542797ac58cSKevin Wolf return buf; 543797ac58cSKevin Wolf } 544797ac58cSKevin Wolf 5459b0beaf3SJohn Snow static int do_pread(BlockBackend *blk, char *buf, int64_t offset, 54600e2a04cSStefan Hajnoczi int64_t bytes, BdrvRequestFlags flags, int64_t *total) 547797ac58cSKevin Wolf { 548bf5b16faSAlberto Faria int ret; 549bf5b16faSAlberto Faria 550f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5519b0beaf3SJohn Snow return -ERANGE; 5529b0beaf3SJohn Snow } 5539b0beaf3SJohn Snow 55400e2a04cSStefan Hajnoczi ret = blk_pread(blk, offset, bytes, (uint8_t *)buf, flags); 555bf5b16faSAlberto Faria if (ret < 0) { 556bf5b16faSAlberto Faria return ret; 557797ac58cSKevin Wolf } 558bf5b16faSAlberto Faria *total = bytes; 559797ac58cSKevin Wolf return 1; 560797ac58cSKevin Wolf } 561797ac58cSKevin Wolf 5629b0beaf3SJohn Snow static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset, 5631321e008SStefan Hajnoczi int64_t bytes, BdrvRequestFlags flags, int64_t *total) 564797ac58cSKevin Wolf { 565bf5b16faSAlberto Faria int ret; 566bf5b16faSAlberto Faria 567f5a5ca79SManos Pitsidianakis if (bytes > INT_MAX) { 5689b0beaf3SJohn Snow return -ERANGE; 5699b0beaf3SJohn Snow } 5709b0beaf3SJohn Snow 571a9262f55SAlberto Faria ret = blk_pwrite(blk, offset, bytes, (uint8_t *)buf, flags); 572bf5b16faSAlberto Faria if (ret < 0) { 573bf5b16faSAlberto Faria return ret; 574797ac58cSKevin Wolf } 575bf5b16faSAlberto Faria *total = bytes; 576797ac58cSKevin Wolf return 1; 577797ac58cSKevin Wolf } 578797ac58cSKevin Wolf 579264dcbb2SPaolo Bonzini static int do_pwrite_zeroes(BlockBackend *blk, int64_t offset, 5801321e008SStefan Hajnoczi int64_t bytes, BdrvRequestFlags flags, 5811321e008SStefan Hajnoczi int64_t *total) 582797ac58cSKevin Wolf { 583264dcbb2SPaolo Bonzini int ret = blk_pwrite_zeroes(blk, offset, bytes, 584264dcbb2SPaolo Bonzini flags | BDRV_REQ_ZERO_WRITE); 585797ac58cSKevin Wolf 586264dcbb2SPaolo Bonzini if (ret < 0) { 587264dcbb2SPaolo Bonzini return ret; 588797ac58cSKevin Wolf } 589264dcbb2SPaolo Bonzini *total = bytes; 590797ac58cSKevin Wolf return 1; 591797ac58cSKevin Wolf } 592797ac58cSKevin Wolf 5934c7b7e9bSMax Reitz static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, 594f5a5ca79SManos Pitsidianakis int64_t bytes, int64_t *total) 595797ac58cSKevin Wolf { 596797ac58cSKevin Wolf int ret; 597797ac58cSKevin Wolf 59841ae31e3SAlberto Garcia if (bytes > BDRV_REQUEST_MAX_BYTES) { 5999b0beaf3SJohn Snow return -ERANGE; 6009b0beaf3SJohn Snow } 6019b0beaf3SJohn Snow 6020cadf2c8SAlberto Faria ret = blk_pwrite_compressed(blk, offset, bytes, buf); 603797ac58cSKevin Wolf if (ret < 0) { 604797ac58cSKevin Wolf return ret; 605797ac58cSKevin Wolf } 606f5a5ca79SManos Pitsidianakis *total = bytes; 607797ac58cSKevin Wolf return 1; 608797ac58cSKevin Wolf } 609797ac58cSKevin Wolf 6104c7b7e9bSMax Reitz static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6119b0beaf3SJohn Snow int64_t count, int64_t *total) 612797ac58cSKevin Wolf { 6139b0beaf3SJohn Snow if (count > INT_MAX) { 6149b0beaf3SJohn Snow return -ERANGE; 6159b0beaf3SJohn Snow } 6169b0beaf3SJohn Snow 6174c7b7e9bSMax Reitz *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count); 618797ac58cSKevin Wolf if (*total < 0) { 619797ac58cSKevin Wolf return *total; 620797ac58cSKevin Wolf } 621797ac58cSKevin Wolf return 1; 622797ac58cSKevin Wolf } 623797ac58cSKevin Wolf 6244c7b7e9bSMax Reitz static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset, 6259b0beaf3SJohn Snow int64_t count, int64_t *total) 626797ac58cSKevin Wolf { 6279b0beaf3SJohn Snow if (count > INT_MAX) { 6289b0beaf3SJohn Snow return -ERANGE; 6299b0beaf3SJohn Snow } 6309b0beaf3SJohn Snow 6314c7b7e9bSMax Reitz *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count); 632797ac58cSKevin Wolf if (*total < 0) { 633797ac58cSKevin Wolf return *total; 634797ac58cSKevin Wolf } 635797ac58cSKevin Wolf return 1; 636797ac58cSKevin Wolf } 637797ac58cSKevin Wolf 638797ac58cSKevin Wolf #define NOT_DONE 0x7fffffff 639797ac58cSKevin Wolf static void aio_rw_done(void *opaque, int ret) 640797ac58cSKevin Wolf { 641797ac58cSKevin Wolf *(int *)opaque = ret; 642797ac58cSKevin Wolf } 643797ac58cSKevin Wolf 6444c7b7e9bSMax Reitz static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov, 64500e2a04cSStefan Hajnoczi int64_t offset, BdrvRequestFlags flags, int *total) 646797ac58cSKevin Wolf { 647797ac58cSKevin Wolf int async_ret = NOT_DONE; 648797ac58cSKevin Wolf 64900e2a04cSStefan Hajnoczi blk_aio_preadv(blk, offset, qiov, flags, aio_rw_done, &async_ret); 650797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 651797ac58cSKevin Wolf main_loop_wait(false); 652797ac58cSKevin Wolf } 653797ac58cSKevin Wolf 654797ac58cSKevin Wolf *total = qiov->size; 655797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 656797ac58cSKevin Wolf } 657797ac58cSKevin Wolf 6584c7b7e9bSMax Reitz static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov, 6591321e008SStefan Hajnoczi int64_t offset, BdrvRequestFlags flags, int *total) 660797ac58cSKevin Wolf { 661797ac58cSKevin Wolf int async_ret = NOT_DONE; 662797ac58cSKevin Wolf 663770e0e0eSEric Blake blk_aio_pwritev(blk, offset, qiov, flags, aio_rw_done, &async_ret); 664797ac58cSKevin Wolf while (async_ret == NOT_DONE) { 665797ac58cSKevin Wolf main_loop_wait(false); 666797ac58cSKevin Wolf } 667797ac58cSKevin Wolf 668797ac58cSKevin Wolf *total = qiov->size; 669797ac58cSKevin Wolf return async_ret < 0 ? async_ret : 1; 670797ac58cSKevin Wolf } 671797ac58cSKevin Wolf 672797ac58cSKevin Wolf static void read_help(void) 673797ac58cSKevin Wolf { 674797ac58cSKevin Wolf printf( 675797ac58cSKevin Wolf "\n" 676797ac58cSKevin Wolf " reads a range of bytes from the given offset\n" 677797ac58cSKevin Wolf "\n" 678797ac58cSKevin Wolf " Example:\n" 679797ac58cSKevin Wolf " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" 680797ac58cSKevin Wolf "\n" 681797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 682797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 683797ac58cSKevin Wolf " -b, -- read from the VM state rather than the virtual disk\n" 684797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 685797ac58cSKevin Wolf " -l, -- length for pattern verification (only with -P)\n" 686093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 687797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 688797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 68900e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 690797ac58cSKevin Wolf " -s, -- start offset for pattern verification (only with -P)\n" 691797ac58cSKevin Wolf " -v, -- dump buffer to standard output\n" 692797ac58cSKevin Wolf "\n"); 693797ac58cSKevin Wolf } 694797ac58cSKevin Wolf 695b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv); 696797ac58cSKevin Wolf 697797ac58cSKevin Wolf static const cmdinfo_t read_cmd = { 698797ac58cSKevin Wolf .name = "read", 699797ac58cSKevin Wolf .altname = "r", 700797ac58cSKevin Wolf .cfunc = read_f, 701797ac58cSKevin Wolf .argmin = 2, 702797ac58cSKevin Wolf .argmax = -1, 70300e2a04cSStefan Hajnoczi .args = "[-abCqrv] [-P pattern [-s off] [-l len]] off len", 704797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 705797ac58cSKevin Wolf .help = read_help, 706797ac58cSKevin Wolf }; 707797ac58cSKevin Wolf 708b32d7a39SMax Reitz static int read_f(BlockBackend *blk, int argc, char **argv) 709797ac58cSKevin Wolf { 71050290c00SAlex Bennée struct timespec t1, t2; 711093ea232SEric Blake bool Cflag = false, qflag = false, vflag = false; 712dc38852aSEric Blake bool Pflag = false, sflag = false, lflag = false, bflag = false; 713b32d7a39SMax Reitz int c, cnt, ret; 714797ac58cSKevin Wolf char *buf; 715797ac58cSKevin Wolf int64_t offset; 7169b0beaf3SJohn Snow int64_t count; 717797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 7189b0beaf3SJohn Snow int64_t total = 0; 7199b0beaf3SJohn Snow int pattern = 0; 7209b0beaf3SJohn Snow int64_t pattern_offset = 0, pattern_count = 0; 72100e2a04cSStefan Hajnoczi BdrvRequestFlags flags = 0; 722797ac58cSKevin Wolf 72300e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "bCl:pP:qrs:v")) != -1) { 724797ac58cSKevin Wolf switch (c) { 725797ac58cSKevin Wolf case 'b': 726dc38852aSEric Blake bflag = true; 727797ac58cSKevin Wolf break; 728797ac58cSKevin Wolf case 'C': 729dc38852aSEric Blake Cflag = true; 730797ac58cSKevin Wolf break; 731797ac58cSKevin Wolf case 'l': 732dc38852aSEric Blake lflag = true; 733797ac58cSKevin Wolf pattern_count = cvtnum(optarg); 734797ac58cSKevin Wolf if (pattern_count < 0) { 735a9ecfa00SJohn Snow print_cvtnum_err(pattern_count, optarg); 736b32d7a39SMax Reitz return pattern_count; 737797ac58cSKevin Wolf } 738797ac58cSKevin Wolf break; 739797ac58cSKevin Wolf case 'p': 740093ea232SEric Blake /* Ignored for backwards compatibility */ 741797ac58cSKevin Wolf break; 742797ac58cSKevin Wolf case 'P': 743dc38852aSEric Blake Pflag = true; 744797ac58cSKevin Wolf pattern = parse_pattern(optarg); 745797ac58cSKevin Wolf if (pattern < 0) { 746b32d7a39SMax Reitz return -EINVAL; 747797ac58cSKevin Wolf } 748797ac58cSKevin Wolf break; 749797ac58cSKevin Wolf case 'q': 750dc38852aSEric Blake qflag = true; 751797ac58cSKevin Wolf break; 75200e2a04cSStefan Hajnoczi case 'r': 75300e2a04cSStefan Hajnoczi flags |= BDRV_REQ_REGISTERED_BUF; 75400e2a04cSStefan Hajnoczi break; 755797ac58cSKevin Wolf case 's': 756dc38852aSEric Blake sflag = true; 757797ac58cSKevin Wolf pattern_offset = cvtnum(optarg); 758797ac58cSKevin Wolf if (pattern_offset < 0) { 759a9ecfa00SJohn Snow print_cvtnum_err(pattern_offset, optarg); 760b32d7a39SMax Reitz return pattern_offset; 761797ac58cSKevin Wolf } 762797ac58cSKevin Wolf break; 763797ac58cSKevin Wolf case 'v': 764dc38852aSEric Blake vflag = true; 765797ac58cSKevin Wolf break; 766797ac58cSKevin Wolf default: 767b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 768b32d7a39SMax Reitz return -EINVAL; 769797ac58cSKevin Wolf } 770797ac58cSKevin Wolf } 771797ac58cSKevin Wolf 772797ac58cSKevin Wolf if (optind != argc - 2) { 773b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 774b32d7a39SMax Reitz return -EINVAL; 775797ac58cSKevin Wolf } 776797ac58cSKevin Wolf 777797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 778797ac58cSKevin Wolf if (offset < 0) { 779a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 780b32d7a39SMax Reitz return offset; 781797ac58cSKevin Wolf } 782797ac58cSKevin Wolf 783797ac58cSKevin Wolf optind++; 784797ac58cSKevin Wolf count = cvtnum(argv[optind]); 785797ac58cSKevin Wolf if (count < 0) { 786a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 787b32d7a39SMax Reitz return count; 7883026c468SAlberto Garcia } else if (count > BDRV_REQUEST_MAX_BYTES) { 7899b0beaf3SJohn Snow printf("length cannot exceed %" PRIu64 ", given %s\n", 7903026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 791b32d7a39SMax Reitz return -EINVAL; 792797ac58cSKevin Wolf } 793797ac58cSKevin Wolf 794797ac58cSKevin Wolf if (!Pflag && (lflag || sflag)) { 795b444d0e9SMax Reitz qemuio_command_usage(&read_cmd); 796b32d7a39SMax Reitz return -EINVAL; 797797ac58cSKevin Wolf } 798797ac58cSKevin Wolf 799797ac58cSKevin Wolf if (!lflag) { 800797ac58cSKevin Wolf pattern_count = count - pattern_offset; 801797ac58cSKevin Wolf } 802797ac58cSKevin Wolf 803797ac58cSKevin Wolf if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { 804797ac58cSKevin Wolf printf("pattern verification range exceeds end of read data\n"); 805b32d7a39SMax Reitz return -EINVAL; 806797ac58cSKevin Wolf } 807797ac58cSKevin Wolf 808093ea232SEric Blake if (bflag) { 8091bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 8101bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 811797ac58cSKevin Wolf offset); 812b32d7a39SMax Reitz return -EINVAL; 813797ac58cSKevin Wolf } 8141bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 8151bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 816797ac58cSKevin Wolf count); 817b32d7a39SMax Reitz return -EINVAL; 818797ac58cSKevin Wolf } 81900e2a04cSStefan Hajnoczi if (flags & BDRV_REQ_REGISTERED_BUF) { 82000e2a04cSStefan Hajnoczi printf("I/O buffer registration is not supported when reading " 82100e2a04cSStefan Hajnoczi "from vmstate\n"); 82200e2a04cSStefan Hajnoczi return -EINVAL; 82300e2a04cSStefan Hajnoczi } 824797ac58cSKevin Wolf } 825797ac58cSKevin Wolf 82600e2a04cSStefan Hajnoczi buf = qemu_io_alloc(blk, count, 0xab, flags & BDRV_REQ_REGISTERED_BUF); 827797ac58cSKevin Wolf 82850290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 8297b3f9712SEric Blake if (bflag) { 830b32d7a39SMax Reitz ret = do_load_vmstate(blk, buf, offset, count, &total); 831797ac58cSKevin Wolf } else { 83200e2a04cSStefan Hajnoczi ret = do_pread(blk, buf, offset, count, flags, &total); 833797ac58cSKevin Wolf } 83450290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 835797ac58cSKevin Wolf 836b32d7a39SMax Reitz if (ret < 0) { 837b32d7a39SMax Reitz printf("read failed: %s\n", strerror(-ret)); 838797ac58cSKevin Wolf goto out; 839797ac58cSKevin Wolf } 840b32d7a39SMax Reitz cnt = ret; 841b32d7a39SMax Reitz 842b32d7a39SMax Reitz ret = 0; 843797ac58cSKevin Wolf 844797ac58cSKevin Wolf if (Pflag) { 845797ac58cSKevin Wolf void *cmp_buf = g_malloc(pattern_count); 846797ac58cSKevin Wolf memset(cmp_buf, pattern, pattern_count); 847797ac58cSKevin Wolf if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) { 848797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 8499b0beaf3SJohn Snow PRId64 ", %"PRId64" bytes\n", 850797ac58cSKevin Wolf offset + pattern_offset, pattern_count); 851b32d7a39SMax Reitz ret = -EINVAL; 852797ac58cSKevin Wolf } 853797ac58cSKevin Wolf g_free(cmp_buf); 854797ac58cSKevin Wolf } 855797ac58cSKevin Wolf 856797ac58cSKevin Wolf if (qflag) { 857797ac58cSKevin Wolf goto out; 858797ac58cSKevin Wolf } 859797ac58cSKevin Wolf 860797ac58cSKevin Wolf if (vflag) { 861797ac58cSKevin Wolf dump_buffer(buf, offset, count); 862797ac58cSKevin Wolf } 863797ac58cSKevin Wolf 864797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 865797ac58cSKevin Wolf t2 = tsub(t2, t1); 866797ac58cSKevin Wolf print_report("read", &t2, offset, count, total, cnt, Cflag); 867797ac58cSKevin Wolf 868797ac58cSKevin Wolf out: 86900e2a04cSStefan Hajnoczi qemu_io_free(blk, buf, count, flags & BDRV_REQ_REGISTERED_BUF); 870b32d7a39SMax Reitz return ret; 871797ac58cSKevin Wolf } 872797ac58cSKevin Wolf 873797ac58cSKevin Wolf static void readv_help(void) 874797ac58cSKevin Wolf { 875797ac58cSKevin Wolf printf( 876797ac58cSKevin Wolf "\n" 877797ac58cSKevin Wolf " reads a range of bytes from the given offset into multiple buffers\n" 878797ac58cSKevin Wolf "\n" 879797ac58cSKevin Wolf " Example:\n" 880797ac58cSKevin Wolf " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 881797ac58cSKevin Wolf "\n" 882797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 883797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 884797ac58cSKevin Wolf " Uses multiple iovec buffers if more than one byte range is specified.\n" 885797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 886797ac58cSKevin Wolf " -P, -- use a pattern to verify read data\n" 887797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 88800e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 88900e2a04cSStefan Hajnoczi " -v, -- dump buffer to standard output\n" 890797ac58cSKevin Wolf "\n"); 891797ac58cSKevin Wolf } 892797ac58cSKevin Wolf 893b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv); 894797ac58cSKevin Wolf 895797ac58cSKevin Wolf static const cmdinfo_t readv_cmd = { 896797ac58cSKevin Wolf .name = "readv", 897797ac58cSKevin Wolf .cfunc = readv_f, 898797ac58cSKevin Wolf .argmin = 2, 899797ac58cSKevin Wolf .argmax = -1, 90000e2a04cSStefan Hajnoczi .args = "[-Cqrv] [-P pattern] off len [len..]", 901797ac58cSKevin Wolf .oneline = "reads a number of bytes at a specified offset", 902797ac58cSKevin Wolf .help = readv_help, 903797ac58cSKevin Wolf }; 904797ac58cSKevin Wolf 905b32d7a39SMax Reitz static int readv_f(BlockBackend *blk, int argc, char **argv) 906797ac58cSKevin Wolf { 90750290c00SAlex Bennée struct timespec t1, t2; 908dc38852aSEric Blake bool Cflag = false, qflag = false, vflag = false; 909b32d7a39SMax Reitz int c, cnt, ret; 910797ac58cSKevin Wolf char *buf; 911797ac58cSKevin Wolf int64_t offset; 912797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 913797ac58cSKevin Wolf int total = 0; 914797ac58cSKevin Wolf int nr_iov; 915797ac58cSKevin Wolf QEMUIOVector qiov; 916797ac58cSKevin Wolf int pattern = 0; 917dc38852aSEric Blake bool Pflag = false; 91800e2a04cSStefan Hajnoczi BdrvRequestFlags flags = 0; 919797ac58cSKevin Wolf 92000e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "CP:qrv")) != -1) { 921797ac58cSKevin Wolf switch (c) { 922797ac58cSKevin Wolf case 'C': 923dc38852aSEric Blake Cflag = true; 924797ac58cSKevin Wolf break; 925797ac58cSKevin Wolf case 'P': 926dc38852aSEric Blake Pflag = true; 927797ac58cSKevin Wolf pattern = parse_pattern(optarg); 928797ac58cSKevin Wolf if (pattern < 0) { 929b32d7a39SMax Reitz return -EINVAL; 930797ac58cSKevin Wolf } 931797ac58cSKevin Wolf break; 932797ac58cSKevin Wolf case 'q': 933dc38852aSEric Blake qflag = true; 934797ac58cSKevin Wolf break; 93500e2a04cSStefan Hajnoczi case 'r': 93600e2a04cSStefan Hajnoczi flags |= BDRV_REQ_REGISTERED_BUF; 93700e2a04cSStefan Hajnoczi break; 938797ac58cSKevin Wolf case 'v': 939dc38852aSEric Blake vflag = true; 940797ac58cSKevin Wolf break; 941797ac58cSKevin Wolf default: 942b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 943b32d7a39SMax Reitz return -EINVAL; 944797ac58cSKevin Wolf } 945797ac58cSKevin Wolf } 946797ac58cSKevin Wolf 947797ac58cSKevin Wolf if (optind > argc - 2) { 948b444d0e9SMax Reitz qemuio_command_usage(&readv_cmd); 949b32d7a39SMax Reitz return -EINVAL; 950797ac58cSKevin Wolf } 951797ac58cSKevin Wolf 952797ac58cSKevin Wolf 953797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 954797ac58cSKevin Wolf if (offset < 0) { 955a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 956b32d7a39SMax Reitz return offset; 957797ac58cSKevin Wolf } 958797ac58cSKevin Wolf optind++; 959797ac58cSKevin Wolf 960797ac58cSKevin Wolf nr_iov = argc - optind; 96100e2a04cSStefan Hajnoczi buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab, 96200e2a04cSStefan Hajnoczi flags & BDRV_REQ_REGISTERED_BUF); 963797ac58cSKevin Wolf if (buf == NULL) { 964b32d7a39SMax Reitz return -EINVAL; 965797ac58cSKevin Wolf } 966797ac58cSKevin Wolf 96750290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 96800e2a04cSStefan Hajnoczi ret = do_aio_readv(blk, &qiov, offset, flags, &total); 96950290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 970797ac58cSKevin Wolf 971b32d7a39SMax Reitz if (ret < 0) { 972b32d7a39SMax Reitz printf("readv failed: %s\n", strerror(-ret)); 973797ac58cSKevin Wolf goto out; 974797ac58cSKevin Wolf } 975b32d7a39SMax Reitz cnt = ret; 976b32d7a39SMax Reitz 977b32d7a39SMax Reitz ret = 0; 978797ac58cSKevin Wolf 979797ac58cSKevin Wolf if (Pflag) { 980797ac58cSKevin Wolf void *cmp_buf = g_malloc(qiov.size); 981797ac58cSKevin Wolf memset(cmp_buf, pattern, qiov.size); 982797ac58cSKevin Wolf if (memcmp(buf, cmp_buf, qiov.size)) { 983797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 984cf67b692SStefan Weil PRId64 ", %zu bytes\n", offset, qiov.size); 985b32d7a39SMax Reitz ret = -EINVAL; 986797ac58cSKevin Wolf } 987797ac58cSKevin Wolf g_free(cmp_buf); 988797ac58cSKevin Wolf } 989797ac58cSKevin Wolf 990797ac58cSKevin Wolf if (qflag) { 991797ac58cSKevin Wolf goto out; 992797ac58cSKevin Wolf } 993797ac58cSKevin Wolf 994797ac58cSKevin Wolf if (vflag) { 995797ac58cSKevin Wolf dump_buffer(buf, offset, qiov.size); 996797ac58cSKevin Wolf } 997797ac58cSKevin Wolf 998797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 999797ac58cSKevin Wolf t2 = tsub(t2, t1); 1000797ac58cSKevin Wolf print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); 1001797ac58cSKevin Wolf 1002797ac58cSKevin Wolf out: 100300e2a04cSStefan Hajnoczi qemu_io_free(blk, buf, qiov.size, flags & BDRV_REQ_REGISTERED_BUF); 1004797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1005b32d7a39SMax Reitz return ret; 1006797ac58cSKevin Wolf } 1007797ac58cSKevin Wolf 1008797ac58cSKevin Wolf static void write_help(void) 1009797ac58cSKevin Wolf { 1010797ac58cSKevin Wolf printf( 1011797ac58cSKevin Wolf "\n" 1012797ac58cSKevin Wolf " writes a range of bytes from the given offset\n" 1013797ac58cSKevin Wolf "\n" 1014797ac58cSKevin Wolf " Example:\n" 1015797ac58cSKevin Wolf " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" 1016797ac58cSKevin Wolf "\n" 1017797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1018797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1019797ac58cSKevin Wolf " -b, -- write to the VM state rather than the virtual disk\n" 10204c7b7e9bSMax Reitz " -c, -- write compressed data with blk_write_compressed\n" 102100e2a04cSStefan Hajnoczi " -C, -- report statistics in a machine parsable format\n" 1022770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 1023c6e3f520SKevin Wolf " -n, -- with -z, don't allow slow fallback\n" 1024093ea232SEric Blake " -p, -- ignored for backwards compatibility\n" 1025797ac58cSKevin Wolf " -P, -- use different pattern to fill file\n" 1026797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 102700e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 102800e2a04cSStefan Hajnoczi " -s, -- use a pattern file to fill the write buffer\n" 1029c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1030264dcbb2SPaolo Bonzini " -z, -- write zeroes using blk_pwrite_zeroes\n" 1031797ac58cSKevin Wolf "\n"); 1032797ac58cSKevin Wolf } 1033797ac58cSKevin Wolf 1034b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv); 1035797ac58cSKevin Wolf 1036797ac58cSKevin Wolf static const cmdinfo_t write_cmd = { 1037797ac58cSKevin Wolf .name = "write", 1038797ac58cSKevin Wolf .altname = "w", 1039797ac58cSKevin Wolf .cfunc = write_f, 1040887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1041797ac58cSKevin Wolf .argmin = 2, 1042797ac58cSKevin Wolf .argmax = -1, 104300e2a04cSStefan Hajnoczi .args = "[-bcCfnqruz] [-P pattern | -s source_file] off len", 1044797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1045797ac58cSKevin Wolf .help = write_help, 1046797ac58cSKevin Wolf }; 1047797ac58cSKevin Wolf 1048b32d7a39SMax Reitz static int write_f(BlockBackend *blk, int argc, char **argv) 1049797ac58cSKevin Wolf { 105050290c00SAlex Bennée struct timespec t1, t2; 1051093ea232SEric Blake bool Cflag = false, qflag = false, bflag = false; 10524d731510SDenis Plotnikov bool Pflag = false, zflag = false, cflag = false, sflag = false; 10531321e008SStefan Hajnoczi BdrvRequestFlags flags = 0; 1054b32d7a39SMax Reitz int c, cnt, ret; 1055797ac58cSKevin Wolf char *buf = NULL; 1056797ac58cSKevin Wolf int64_t offset; 10579b0beaf3SJohn Snow int64_t count; 1058797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 10599b0beaf3SJohn Snow int64_t total = 0; 1060797ac58cSKevin Wolf int pattern = 0xcd; 10614d731510SDenis Plotnikov const char *file_name = NULL; 1062797ac58cSKevin Wolf 106300e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "bcCfnpP:qrs:uz")) != -1) { 1064797ac58cSKevin Wolf switch (c) { 1065797ac58cSKevin Wolf case 'b': 1066dc38852aSEric Blake bflag = true; 1067797ac58cSKevin Wolf break; 1068797ac58cSKevin Wolf case 'c': 1069dc38852aSEric Blake cflag = true; 1070797ac58cSKevin Wolf break; 1071797ac58cSKevin Wolf case 'C': 1072dc38852aSEric Blake Cflag = true; 1073797ac58cSKevin Wolf break; 1074770e0e0eSEric Blake case 'f': 1075770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1076770e0e0eSEric Blake break; 1077c6e3f520SKevin Wolf case 'n': 1078c6e3f520SKevin Wolf flags |= BDRV_REQ_NO_FALLBACK; 1079c6e3f520SKevin Wolf break; 1080797ac58cSKevin Wolf case 'p': 1081093ea232SEric Blake /* Ignored for backwards compatibility */ 1082797ac58cSKevin Wolf break; 1083797ac58cSKevin Wolf case 'P': 1084dc38852aSEric Blake Pflag = true; 1085797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1086797ac58cSKevin Wolf if (pattern < 0) { 1087b32d7a39SMax Reitz return -EINVAL; 1088797ac58cSKevin Wolf } 1089797ac58cSKevin Wolf break; 1090797ac58cSKevin Wolf case 'q': 1091dc38852aSEric Blake qflag = true; 1092797ac58cSKevin Wolf break; 109300e2a04cSStefan Hajnoczi case 'r': 109400e2a04cSStefan Hajnoczi flags |= BDRV_REQ_REGISTERED_BUF; 109500e2a04cSStefan Hajnoczi break; 10964d731510SDenis Plotnikov case 's': 10974d731510SDenis Plotnikov sflag = true; 10984d731510SDenis Plotnikov file_name = optarg; 10994d731510SDenis Plotnikov break; 1100c2e001ccSEric Blake case 'u': 1101c2e001ccSEric Blake flags |= BDRV_REQ_MAY_UNMAP; 1102c2e001ccSEric Blake break; 1103797ac58cSKevin Wolf case 'z': 1104dc38852aSEric Blake zflag = true; 1105797ac58cSKevin Wolf break; 1106797ac58cSKevin Wolf default: 1107b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1108b32d7a39SMax Reitz return -EINVAL; 1109797ac58cSKevin Wolf } 1110797ac58cSKevin Wolf } 1111797ac58cSKevin Wolf 1112797ac58cSKevin Wolf if (optind != argc - 2) { 1113b444d0e9SMax Reitz qemuio_command_usage(&write_cmd); 1114b32d7a39SMax Reitz return -EINVAL; 1115797ac58cSKevin Wolf } 1116797ac58cSKevin Wolf 1117093ea232SEric Blake if (bflag && zflag) { 1118093ea232SEric Blake printf("-b and -z cannot be specified at the same time\n"); 1119b32d7a39SMax Reitz return -EINVAL; 1120797ac58cSKevin Wolf } 1121797ac58cSKevin Wolf 1122770e0e0eSEric Blake if ((flags & BDRV_REQ_FUA) && (bflag || cflag)) { 1123770e0e0eSEric Blake printf("-f and -b or -c cannot be specified at the same time\n"); 1124b32d7a39SMax Reitz return -EINVAL; 1125770e0e0eSEric Blake } 1126770e0e0eSEric Blake 1127c6e3f520SKevin Wolf if ((flags & BDRV_REQ_NO_FALLBACK) && !zflag) { 1128c6e3f520SKevin Wolf printf("-n requires -z to be specified\n"); 1129c6e3f520SKevin Wolf return -EINVAL; 1130c6e3f520SKevin Wolf } 1131c6e3f520SKevin Wolf 1132c2e001ccSEric Blake if ((flags & BDRV_REQ_MAY_UNMAP) && !zflag) { 1133c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 1134b32d7a39SMax Reitz return -EINVAL; 1135c2e001ccSEric Blake } 1136c2e001ccSEric Blake 11374d731510SDenis Plotnikov if (zflag + Pflag + sflag > 1) { 11384d731510SDenis Plotnikov printf("Only one of -z, -P, and -s " 11394d731510SDenis Plotnikov "can be specified at the same time\n"); 1140b32d7a39SMax Reitz return -EINVAL; 1141797ac58cSKevin Wolf } 1142797ac58cSKevin Wolf 1143797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1144797ac58cSKevin Wolf if (offset < 0) { 1145a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1146b32d7a39SMax Reitz return offset; 1147797ac58cSKevin Wolf } 1148797ac58cSKevin Wolf 1149797ac58cSKevin Wolf optind++; 1150797ac58cSKevin Wolf count = cvtnum(argv[optind]); 1151797ac58cSKevin Wolf if (count < 0) { 1152a9ecfa00SJohn Snow print_cvtnum_err(count, argv[optind]); 1153b32d7a39SMax Reitz return count; 1154395aecd0SEric Blake } else if (count > BDRV_REQUEST_MAX_BYTES && 1155395aecd0SEric Blake !(flags & BDRV_REQ_NO_FALLBACK)) { 1156395aecd0SEric Blake printf("length cannot exceed %" PRIu64 " without -n, given %s\n", 11573026c468SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1158b32d7a39SMax Reitz return -EINVAL; 1159797ac58cSKevin Wolf } 1160797ac58cSKevin Wolf 1161093ea232SEric Blake if (bflag || cflag) { 11621bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) { 11631bce6b4cSEric Blake printf("%" PRId64 " is not a sector-aligned value for 'offset'\n", 1164797ac58cSKevin Wolf offset); 1165b32d7a39SMax Reitz return -EINVAL; 1166797ac58cSKevin Wolf } 1167797ac58cSKevin Wolf 11681bce6b4cSEric Blake if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) { 11691bce6b4cSEric Blake printf("%"PRId64" is not a sector-aligned value for 'count'\n", 1170797ac58cSKevin Wolf count); 1171b32d7a39SMax Reitz return -EINVAL; 1172797ac58cSKevin Wolf } 1173797ac58cSKevin Wolf } 1174797ac58cSKevin Wolf 117500e2a04cSStefan Hajnoczi if (zflag) { 117600e2a04cSStefan Hajnoczi if (flags & BDRV_REQ_REGISTERED_BUF) { 117700e2a04cSStefan Hajnoczi printf("cannot combine zero write with registered I/O buffer\n"); 117800e2a04cSStefan Hajnoczi return -EINVAL; 117900e2a04cSStefan Hajnoczi } 118000e2a04cSStefan Hajnoczi } else { 11814d731510SDenis Plotnikov if (sflag) { 118200e2a04cSStefan Hajnoczi buf = qemu_io_alloc_from_file(blk, count, file_name, 118300e2a04cSStefan Hajnoczi flags & BDRV_REQ_REGISTERED_BUF); 11844d731510SDenis Plotnikov if (!buf) { 11854d731510SDenis Plotnikov return -EINVAL; 11864d731510SDenis Plotnikov } 11874d731510SDenis Plotnikov } else { 118800e2a04cSStefan Hajnoczi buf = qemu_io_alloc(blk, count, pattern, 118900e2a04cSStefan Hajnoczi flags & BDRV_REQ_REGISTERED_BUF); 1190797ac58cSKevin Wolf } 11914d731510SDenis Plotnikov } 1192797ac58cSKevin Wolf 119350290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 11947b3f9712SEric Blake if (bflag) { 1195b32d7a39SMax Reitz ret = do_save_vmstate(blk, buf, offset, count, &total); 1196797ac58cSKevin Wolf } else if (zflag) { 1197264dcbb2SPaolo Bonzini ret = do_pwrite_zeroes(blk, offset, count, flags, &total); 1198797ac58cSKevin Wolf } else if (cflag) { 1199b32d7a39SMax Reitz ret = do_write_compressed(blk, buf, offset, count, &total); 1200797ac58cSKevin Wolf } else { 1201b32d7a39SMax Reitz ret = do_pwrite(blk, buf, offset, count, flags, &total); 1202797ac58cSKevin Wolf } 120350290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1204797ac58cSKevin Wolf 1205b32d7a39SMax Reitz if (ret < 0) { 1206b32d7a39SMax Reitz printf("write failed: %s\n", strerror(-ret)); 1207797ac58cSKevin Wolf goto out; 1208797ac58cSKevin Wolf } 1209b32d7a39SMax Reitz cnt = ret; 1210b32d7a39SMax Reitz 1211b32d7a39SMax Reitz ret = 0; 1212797ac58cSKevin Wolf 1213797ac58cSKevin Wolf if (qflag) { 1214797ac58cSKevin Wolf goto out; 1215797ac58cSKevin Wolf } 1216797ac58cSKevin Wolf 1217797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1218797ac58cSKevin Wolf t2 = tsub(t2, t1); 1219797ac58cSKevin Wolf print_report("wrote", &t2, offset, count, total, cnt, Cflag); 1220797ac58cSKevin Wolf 1221797ac58cSKevin Wolf out: 1222797ac58cSKevin Wolf if (!zflag) { 122300e2a04cSStefan Hajnoczi qemu_io_free(blk, buf, count, flags & BDRV_REQ_REGISTERED_BUF); 1224797ac58cSKevin Wolf } 1225b32d7a39SMax Reitz return ret; 1226797ac58cSKevin Wolf } 1227797ac58cSKevin Wolf 1228797ac58cSKevin Wolf static void 1229797ac58cSKevin Wolf writev_help(void) 1230797ac58cSKevin Wolf { 1231797ac58cSKevin Wolf printf( 1232797ac58cSKevin Wolf "\n" 1233797ac58cSKevin Wolf " writes a range of bytes from the given offset source from multiple buffers\n" 1234797ac58cSKevin Wolf "\n" 1235797ac58cSKevin Wolf " Example:\n" 12366e6507c0SMaria Kustova " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1237797ac58cSKevin Wolf "\n" 1238797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1239797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1240797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1241770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 124200e2a04cSStefan Hajnoczi " -P, -- use different pattern to fill file\n" 1243797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 124400e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 1245797ac58cSKevin Wolf "\n"); 1246797ac58cSKevin Wolf } 1247797ac58cSKevin Wolf 1248b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv); 1249797ac58cSKevin Wolf 1250797ac58cSKevin Wolf static const cmdinfo_t writev_cmd = { 1251797ac58cSKevin Wolf .name = "writev", 1252797ac58cSKevin Wolf .cfunc = writev_f, 1253887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1254797ac58cSKevin Wolf .argmin = 2, 1255797ac58cSKevin Wolf .argmax = -1, 125600e2a04cSStefan Hajnoczi .args = "[-Cfqr] [-P pattern] off len [len..]", 1257797ac58cSKevin Wolf .oneline = "writes a number of bytes at a specified offset", 1258797ac58cSKevin Wolf .help = writev_help, 1259797ac58cSKevin Wolf }; 1260797ac58cSKevin Wolf 1261b32d7a39SMax Reitz static int writev_f(BlockBackend *blk, int argc, char **argv) 1262797ac58cSKevin Wolf { 126350290c00SAlex Bennée struct timespec t1, t2; 1264dc38852aSEric Blake bool Cflag = false, qflag = false; 12651321e008SStefan Hajnoczi BdrvRequestFlags flags = 0; 1266b32d7a39SMax Reitz int c, cnt, ret; 1267797ac58cSKevin Wolf char *buf; 1268797ac58cSKevin Wolf int64_t offset; 1269797ac58cSKevin Wolf /* Some compilers get confused and warn if this is not initialized. */ 1270797ac58cSKevin Wolf int total = 0; 1271797ac58cSKevin Wolf int nr_iov; 1272797ac58cSKevin Wolf int pattern = 0xcd; 1273797ac58cSKevin Wolf QEMUIOVector qiov; 1274797ac58cSKevin Wolf 127500e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "CfP:qr")) != -1) { 1276797ac58cSKevin Wolf switch (c) { 1277797ac58cSKevin Wolf case 'C': 1278dc38852aSEric Blake Cflag = true; 1279797ac58cSKevin Wolf break; 1280770e0e0eSEric Blake case 'f': 1281770e0e0eSEric Blake flags |= BDRV_REQ_FUA; 1282770e0e0eSEric Blake break; 1283797ac58cSKevin Wolf case 'q': 1284dc38852aSEric Blake qflag = true; 1285797ac58cSKevin Wolf break; 128600e2a04cSStefan Hajnoczi case 'r': 128700e2a04cSStefan Hajnoczi flags |= BDRV_REQ_REGISTERED_BUF; 128800e2a04cSStefan Hajnoczi break; 1289797ac58cSKevin Wolf case 'P': 1290797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1291797ac58cSKevin Wolf if (pattern < 0) { 1292b32d7a39SMax Reitz return -EINVAL; 1293797ac58cSKevin Wolf } 1294797ac58cSKevin Wolf break; 1295797ac58cSKevin Wolf default: 1296b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1297b32d7a39SMax Reitz return -EINVAL; 1298797ac58cSKevin Wolf } 1299797ac58cSKevin Wolf } 1300797ac58cSKevin Wolf 1301797ac58cSKevin Wolf if (optind > argc - 2) { 1302b444d0e9SMax Reitz qemuio_command_usage(&writev_cmd); 1303b32d7a39SMax Reitz return -EINVAL; 1304797ac58cSKevin Wolf } 1305797ac58cSKevin Wolf 1306797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1307797ac58cSKevin Wolf if (offset < 0) { 1308a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1309b32d7a39SMax Reitz return offset; 1310797ac58cSKevin Wolf } 1311797ac58cSKevin Wolf optind++; 1312797ac58cSKevin Wolf 1313797ac58cSKevin Wolf nr_iov = argc - optind; 131400e2a04cSStefan Hajnoczi buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern, 131500e2a04cSStefan Hajnoczi flags & BDRV_REQ_REGISTERED_BUF); 1316797ac58cSKevin Wolf if (buf == NULL) { 1317b32d7a39SMax Reitz return -EINVAL; 1318797ac58cSKevin Wolf } 1319797ac58cSKevin Wolf 132050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1321b32d7a39SMax Reitz ret = do_aio_writev(blk, &qiov, offset, flags, &total); 132250290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1323797ac58cSKevin Wolf 1324b32d7a39SMax Reitz if (ret < 0) { 1325b32d7a39SMax Reitz printf("writev failed: %s\n", strerror(-ret)); 1326797ac58cSKevin Wolf goto out; 1327797ac58cSKevin Wolf } 1328b32d7a39SMax Reitz cnt = ret; 1329b32d7a39SMax Reitz 1330b32d7a39SMax Reitz ret = 0; 1331797ac58cSKevin Wolf 1332797ac58cSKevin Wolf if (qflag) { 1333797ac58cSKevin Wolf goto out; 1334797ac58cSKevin Wolf } 1335797ac58cSKevin Wolf 1336797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1337797ac58cSKevin Wolf t2 = tsub(t2, t1); 1338797ac58cSKevin Wolf print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); 1339797ac58cSKevin Wolf out: 134000e2a04cSStefan Hajnoczi qemu_io_free(blk, buf, qiov.size, flags & BDRV_REQ_REGISTERED_BUF); 1341797ac58cSKevin Wolf qemu_iovec_destroy(&qiov); 1342b32d7a39SMax Reitz return ret; 1343797ac58cSKevin Wolf } 1344797ac58cSKevin Wolf 1345797ac58cSKevin Wolf struct aio_ctx { 13464c7b7e9bSMax Reitz BlockBackend *blk; 1347797ac58cSKevin Wolf QEMUIOVector qiov; 1348797ac58cSKevin Wolf int64_t offset; 1349797ac58cSKevin Wolf char *buf; 1350dc38852aSEric Blake bool qflag; 1351dc38852aSEric Blake bool vflag; 1352dc38852aSEric Blake bool Cflag; 1353dc38852aSEric Blake bool Pflag; 1354dc38852aSEric Blake bool zflag; 1355a91f9584SFam Zheng BlockAcctCookie acct; 1356797ac58cSKevin Wolf int pattern; 135700e2a04cSStefan Hajnoczi BdrvRequestFlags flags; 135850290c00SAlex Bennée struct timespec t1; 1359797ac58cSKevin Wolf }; 1360797ac58cSKevin Wolf 1361797ac58cSKevin Wolf static void aio_write_done(void *opaque, int ret) 1362797ac58cSKevin Wolf { 1363797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 136450290c00SAlex Bennée struct timespec t2; 1365797ac58cSKevin Wolf 136650290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1367797ac58cSKevin Wolf 1368797ac58cSKevin Wolf 1369797ac58cSKevin Wolf if (ret < 0) { 1370797ac58cSKevin Wolf printf("aio_write failed: %s\n", strerror(-ret)); 1371556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1372797ac58cSKevin Wolf goto out; 1373797ac58cSKevin Wolf } 1374797ac58cSKevin Wolf 13754c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1376a91f9584SFam Zheng 1377797ac58cSKevin Wolf if (ctx->qflag) { 1378797ac58cSKevin Wolf goto out; 1379797ac58cSKevin Wolf } 1380797ac58cSKevin Wolf 1381797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1382797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1383797ac58cSKevin Wolf print_report("wrote", &t2, ctx->offset, ctx->qiov.size, 1384797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1385797ac58cSKevin Wolf out: 13865ceb7765SKevin Wolf if (!ctx->zflag) { 138700e2a04cSStefan Hajnoczi qemu_io_free(ctx->blk, ctx->buf, ctx->qiov.size, 138800e2a04cSStefan Hajnoczi ctx->flags & BDRV_REQ_REGISTERED_BUF); 1389797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 13905ceb7765SKevin Wolf } 1391797ac58cSKevin Wolf g_free(ctx); 1392797ac58cSKevin Wolf } 1393797ac58cSKevin Wolf 1394797ac58cSKevin Wolf static void aio_read_done(void *opaque, int ret) 1395797ac58cSKevin Wolf { 1396797ac58cSKevin Wolf struct aio_ctx *ctx = opaque; 139750290c00SAlex Bennée struct timespec t2; 1398797ac58cSKevin Wolf 139950290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1400797ac58cSKevin Wolf 1401797ac58cSKevin Wolf if (ret < 0) { 1402797ac58cSKevin Wolf printf("readv failed: %s\n", strerror(-ret)); 1403556c2b60SAlberto Garcia block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct); 1404797ac58cSKevin Wolf goto out; 1405797ac58cSKevin Wolf } 1406797ac58cSKevin Wolf 1407797ac58cSKevin Wolf if (ctx->Pflag) { 1408797ac58cSKevin Wolf void *cmp_buf = g_malloc(ctx->qiov.size); 1409797ac58cSKevin Wolf 1410797ac58cSKevin Wolf memset(cmp_buf, ctx->pattern, ctx->qiov.size); 1411797ac58cSKevin Wolf if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) { 1412797ac58cSKevin Wolf printf("Pattern verification failed at offset %" 1413cf67b692SStefan Weil PRId64 ", %zu bytes\n", ctx->offset, ctx->qiov.size); 1414797ac58cSKevin Wolf } 1415797ac58cSKevin Wolf g_free(cmp_buf); 1416797ac58cSKevin Wolf } 1417797ac58cSKevin Wolf 14184c7b7e9bSMax Reitz block_acct_done(blk_get_stats(ctx->blk), &ctx->acct); 1419a91f9584SFam Zheng 1420797ac58cSKevin Wolf if (ctx->qflag) { 1421797ac58cSKevin Wolf goto out; 1422797ac58cSKevin Wolf } 1423797ac58cSKevin Wolf 1424797ac58cSKevin Wolf if (ctx->vflag) { 1425797ac58cSKevin Wolf dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); 1426797ac58cSKevin Wolf } 1427797ac58cSKevin Wolf 1428797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1429797ac58cSKevin Wolf t2 = tsub(t2, ctx->t1); 1430797ac58cSKevin Wolf print_report("read", &t2, ctx->offset, ctx->qiov.size, 1431797ac58cSKevin Wolf ctx->qiov.size, 1, ctx->Cflag); 1432797ac58cSKevin Wolf out: 143300e2a04cSStefan Hajnoczi qemu_io_free(ctx->blk, ctx->buf, ctx->qiov.size, 143400e2a04cSStefan Hajnoczi ctx->flags & BDRV_REQ_REGISTERED_BUF); 1435797ac58cSKevin Wolf qemu_iovec_destroy(&ctx->qiov); 1436797ac58cSKevin Wolf g_free(ctx); 1437797ac58cSKevin Wolf } 1438797ac58cSKevin Wolf 1439797ac58cSKevin Wolf static void aio_read_help(void) 1440797ac58cSKevin Wolf { 1441797ac58cSKevin Wolf printf( 1442797ac58cSKevin Wolf "\n" 1443797ac58cSKevin Wolf " asynchronously reads a range of bytes from the given offset\n" 1444797ac58cSKevin Wolf "\n" 1445797ac58cSKevin Wolf " Example:\n" 1446797ac58cSKevin Wolf " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" 1447797ac58cSKevin Wolf "\n" 1448797ac58cSKevin Wolf " Reads a segment of the currently open file, optionally dumping it to the\n" 1449797ac58cSKevin Wolf " standard output stream (with -v option) for subsequent inspection.\n" 1450797ac58cSKevin Wolf " The read is performed asynchronously and the aio_flush command must be\n" 1451797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1452b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1453b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1454b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1455797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 145637546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 145700e2a04cSStefan Hajnoczi " -P, -- use a pattern to verify read data\n" 1458797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 145900e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 146000e2a04cSStefan Hajnoczi " -v, -- dump buffer to standard output\n" 1461797ac58cSKevin Wolf "\n"); 1462797ac58cSKevin Wolf } 1463797ac58cSKevin Wolf 1464b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv); 1465797ac58cSKevin Wolf 1466797ac58cSKevin Wolf static const cmdinfo_t aio_read_cmd = { 1467797ac58cSKevin Wolf .name = "aio_read", 1468797ac58cSKevin Wolf .cfunc = aio_read_f, 1469797ac58cSKevin Wolf .argmin = 2, 1470797ac58cSKevin Wolf .argmax = -1, 147100e2a04cSStefan Hajnoczi .args = "[-Ciqrv] [-P pattern] off len [len..]", 1472797ac58cSKevin Wolf .oneline = "asynchronously reads a number of bytes", 1473797ac58cSKevin Wolf .help = aio_read_help, 1474797ac58cSKevin Wolf }; 1475797ac58cSKevin Wolf 1476b32d7a39SMax Reitz static int aio_read_f(BlockBackend *blk, int argc, char **argv) 1477797ac58cSKevin Wolf { 1478797ac58cSKevin Wolf int nr_iov, c; 1479797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1480797ac58cSKevin Wolf 14814c7b7e9bSMax Reitz ctx->blk = blk; 148200e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "CiP:qrv")) != -1) { 1483797ac58cSKevin Wolf switch (c) { 1484797ac58cSKevin Wolf case 'C': 1485dc38852aSEric Blake ctx->Cflag = true; 1486797ac58cSKevin Wolf break; 1487797ac58cSKevin Wolf case 'P': 1488dc38852aSEric Blake ctx->Pflag = true; 1489797ac58cSKevin Wolf ctx->pattern = parse_pattern(optarg); 1490797ac58cSKevin Wolf if (ctx->pattern < 0) { 1491797ac58cSKevin Wolf g_free(ctx); 1492b32d7a39SMax Reitz return -EINVAL; 1493797ac58cSKevin Wolf } 1494797ac58cSKevin Wolf break; 149537546ff2SEric Blake case 'i': 149637546ff2SEric Blake printf("injecting invalid read request\n"); 149737546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 149837546ff2SEric Blake g_free(ctx); 1499b32d7a39SMax Reitz return 0; 1500797ac58cSKevin Wolf case 'q': 1501dc38852aSEric Blake ctx->qflag = true; 1502797ac58cSKevin Wolf break; 150300e2a04cSStefan Hajnoczi case 'r': 150400e2a04cSStefan Hajnoczi ctx->flags |= BDRV_REQ_REGISTERED_BUF; 150500e2a04cSStefan Hajnoczi break; 1506797ac58cSKevin Wolf case 'v': 1507dc38852aSEric Blake ctx->vflag = true; 1508797ac58cSKevin Wolf break; 1509797ac58cSKevin Wolf default: 1510797ac58cSKevin Wolf g_free(ctx); 1511b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1512b32d7a39SMax Reitz return -EINVAL; 1513797ac58cSKevin Wolf } 1514797ac58cSKevin Wolf } 1515797ac58cSKevin Wolf 1516797ac58cSKevin Wolf if (optind > argc - 2) { 1517797ac58cSKevin Wolf g_free(ctx); 1518b444d0e9SMax Reitz qemuio_command_usage(&aio_read_cmd); 1519b32d7a39SMax Reitz return -EINVAL; 1520797ac58cSKevin Wolf } 1521797ac58cSKevin Wolf 1522797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1523797ac58cSKevin Wolf if (ctx->offset < 0) { 1524b32d7a39SMax Reitz int ret = ctx->offset; 1525b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1526797ac58cSKevin Wolf g_free(ctx); 1527b32d7a39SMax Reitz return ret; 1528797ac58cSKevin Wolf } 1529797ac58cSKevin Wolf optind++; 1530797ac58cSKevin Wolf 1531797ac58cSKevin Wolf nr_iov = argc - optind; 153200e2a04cSStefan Hajnoczi ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab, 153300e2a04cSStefan Hajnoczi ctx->flags & BDRV_REQ_REGISTERED_BUF); 1534797ac58cSKevin Wolf if (ctx->buf == NULL) { 1535556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 1536797ac58cSKevin Wolf g_free(ctx); 1537b32d7a39SMax Reitz return -EINVAL; 1538797ac58cSKevin Wolf } 1539797ac58cSKevin Wolf 154050290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 15414c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 15424c7b7e9bSMax Reitz BLOCK_ACCT_READ); 154300e2a04cSStefan Hajnoczi blk_aio_preadv(blk, ctx->offset, &ctx->qiov, ctx->flags, aio_read_done, 154400e2a04cSStefan Hajnoczi ctx); 1545b32d7a39SMax Reitz return 0; 1546797ac58cSKevin Wolf } 1547797ac58cSKevin Wolf 1548797ac58cSKevin Wolf static void aio_write_help(void) 1549797ac58cSKevin Wolf { 1550797ac58cSKevin Wolf printf( 1551797ac58cSKevin Wolf "\n" 1552797ac58cSKevin Wolf " asynchronously writes a range of bytes from the given offset source\n" 1553797ac58cSKevin Wolf " from multiple buffers\n" 1554797ac58cSKevin Wolf "\n" 1555797ac58cSKevin Wolf " Example:\n" 1556797ac58cSKevin Wolf " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" 1557797ac58cSKevin Wolf "\n" 1558797ac58cSKevin Wolf " Writes into a segment of the currently open file, using a buffer\n" 1559797ac58cSKevin Wolf " filled with a set pattern (0xcdcdcdcd).\n" 1560797ac58cSKevin Wolf " The write is performed asynchronously and the aio_flush command must be\n" 1561797ac58cSKevin Wolf " used to ensure all outstanding aio requests have been completed.\n" 1562b32d7a39SMax Reitz " Note that due to its asynchronous nature, this command will be\n" 1563b32d7a39SMax Reitz " considered successful once the request is submitted, independently\n" 1564b32d7a39SMax Reitz " of potential I/O errors or pattern mismatches.\n" 1565797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1566770e0e0eSEric Blake " -f, -- use Force Unit Access semantics\n" 156737546ff2SEric Blake " -i, -- treat request as invalid, for exercising stats\n" 156800e2a04cSStefan Hajnoczi " -P, -- use different pattern to fill file\n" 1569797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 157000e2a04cSStefan Hajnoczi " -r, -- register I/O buffer\n" 1571c2e001ccSEric Blake " -u, -- with -z, allow unmapping\n" 1572d004bd52SEric Blake " -z, -- write zeroes using blk_aio_pwrite_zeroes\n" 1573797ac58cSKevin Wolf "\n"); 1574797ac58cSKevin Wolf } 1575797ac58cSKevin Wolf 1576b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv); 1577797ac58cSKevin Wolf 1578797ac58cSKevin Wolf static const cmdinfo_t aio_write_cmd = { 1579797ac58cSKevin Wolf .name = "aio_write", 1580797ac58cSKevin Wolf .cfunc = aio_write_f, 1581887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1582797ac58cSKevin Wolf .argmin = 2, 1583797ac58cSKevin Wolf .argmax = -1, 158400e2a04cSStefan Hajnoczi .args = "[-Cfiqruz] [-P pattern] off len [len..]", 1585797ac58cSKevin Wolf .oneline = "asynchronously writes a number of bytes", 1586797ac58cSKevin Wolf .help = aio_write_help, 1587797ac58cSKevin Wolf }; 1588797ac58cSKevin Wolf 1589b32d7a39SMax Reitz static int aio_write_f(BlockBackend *blk, int argc, char **argv) 1590797ac58cSKevin Wolf { 1591797ac58cSKevin Wolf int nr_iov, c; 1592797ac58cSKevin Wolf int pattern = 0xcd; 1593797ac58cSKevin Wolf struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); 1594797ac58cSKevin Wolf 15954c7b7e9bSMax Reitz ctx->blk = blk; 159600e2a04cSStefan Hajnoczi while ((c = getopt(argc, argv, "CfiP:qruz")) != -1) { 1597797ac58cSKevin Wolf switch (c) { 1598797ac58cSKevin Wolf case 'C': 1599dc38852aSEric Blake ctx->Cflag = true; 1600797ac58cSKevin Wolf break; 1601770e0e0eSEric Blake case 'f': 160200e2a04cSStefan Hajnoczi ctx->flags |= BDRV_REQ_FUA; 1603770e0e0eSEric Blake break; 1604797ac58cSKevin Wolf case 'q': 1605dc38852aSEric Blake ctx->qflag = true; 1606797ac58cSKevin Wolf break; 160700e2a04cSStefan Hajnoczi case 'r': 160800e2a04cSStefan Hajnoczi ctx->flags |= BDRV_REQ_REGISTERED_BUF; 160900e2a04cSStefan Hajnoczi break; 1610c2e001ccSEric Blake case 'u': 161100e2a04cSStefan Hajnoczi ctx->flags |= BDRV_REQ_MAY_UNMAP; 1612c2e001ccSEric Blake break; 1613797ac58cSKevin Wolf case 'P': 1614797ac58cSKevin Wolf pattern = parse_pattern(optarg); 1615797ac58cSKevin Wolf if (pattern < 0) { 1616797ac58cSKevin Wolf g_free(ctx); 1617b32d7a39SMax Reitz return -EINVAL; 1618797ac58cSKevin Wolf } 1619797ac58cSKevin Wolf break; 162037546ff2SEric Blake case 'i': 162137546ff2SEric Blake printf("injecting invalid write request\n"); 162237546ff2SEric Blake block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 162337546ff2SEric Blake g_free(ctx); 1624b32d7a39SMax Reitz return 0; 16255ceb7765SKevin Wolf case 'z': 1626dc38852aSEric Blake ctx->zflag = true; 16275ceb7765SKevin Wolf break; 1628797ac58cSKevin Wolf default: 1629797ac58cSKevin Wolf g_free(ctx); 1630b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1631b32d7a39SMax Reitz return -EINVAL; 1632797ac58cSKevin Wolf } 1633797ac58cSKevin Wolf } 1634797ac58cSKevin Wolf 1635797ac58cSKevin Wolf if (optind > argc - 2) { 1636797ac58cSKevin Wolf g_free(ctx); 1637b444d0e9SMax Reitz qemuio_command_usage(&aio_write_cmd); 1638b32d7a39SMax Reitz return -EINVAL; 1639797ac58cSKevin Wolf } 1640797ac58cSKevin Wolf 16415ceb7765SKevin Wolf if (ctx->zflag && optind != argc - 2) { 16425ceb7765SKevin Wolf printf("-z supports only a single length parameter\n"); 16435ceb7765SKevin Wolf g_free(ctx); 1644b32d7a39SMax Reitz return -EINVAL; 16455ceb7765SKevin Wolf } 16465ceb7765SKevin Wolf 164700e2a04cSStefan Hajnoczi if ((ctx->flags & BDRV_REQ_MAY_UNMAP) && !ctx->zflag) { 1648c2e001ccSEric Blake printf("-u requires -z to be specified\n"); 16494ca1d340SEric Blake g_free(ctx); 1650b32d7a39SMax Reitz return -EINVAL; 1651c2e001ccSEric Blake } 1652c2e001ccSEric Blake 16535ceb7765SKevin Wolf if (ctx->zflag && ctx->Pflag) { 16545ceb7765SKevin Wolf printf("-z and -P cannot be specified at the same time\n"); 16555ceb7765SKevin Wolf g_free(ctx); 1656b32d7a39SMax Reitz return -EINVAL; 16575ceb7765SKevin Wolf } 16585ceb7765SKevin Wolf 165900e2a04cSStefan Hajnoczi if (ctx->zflag && (ctx->flags & BDRV_REQ_REGISTERED_BUF)) { 166000e2a04cSStefan Hajnoczi printf("cannot combine zero write with registered I/O buffer\n"); 166100e2a04cSStefan Hajnoczi g_free(ctx); 166200e2a04cSStefan Hajnoczi return -EINVAL; 166300e2a04cSStefan Hajnoczi } 166400e2a04cSStefan Hajnoczi 1665797ac58cSKevin Wolf ctx->offset = cvtnum(argv[optind]); 1666797ac58cSKevin Wolf if (ctx->offset < 0) { 1667b32d7a39SMax Reitz int ret = ctx->offset; 1668b32d7a39SMax Reitz print_cvtnum_err(ret, argv[optind]); 1669797ac58cSKevin Wolf g_free(ctx); 1670b32d7a39SMax Reitz return ret; 1671797ac58cSKevin Wolf } 1672797ac58cSKevin Wolf optind++; 1673797ac58cSKevin Wolf 16745ceb7765SKevin Wolf if (ctx->zflag) { 16755ceb7765SKevin Wolf int64_t count = cvtnum(argv[optind]); 16765ceb7765SKevin Wolf if (count < 0) { 16775ceb7765SKevin Wolf print_cvtnum_err(count, argv[optind]); 16780e01b76eSKevin Wolf g_free(ctx); 1679b32d7a39SMax Reitz return count; 16805ceb7765SKevin Wolf } 16815ceb7765SKevin Wolf 16825ceb7765SKevin Wolf ctx->qiov.size = count; 168300e2a04cSStefan Hajnoczi blk_aio_pwrite_zeroes(blk, ctx->offset, count, ctx->flags, 168400e2a04cSStefan Hajnoczi aio_write_done, ctx); 16855ceb7765SKevin Wolf } else { 1686797ac58cSKevin Wolf nr_iov = argc - optind; 16875ceb7765SKevin Wolf ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 168800e2a04cSStefan Hajnoczi pattern, ctx->flags & BDRV_REQ_REGISTERED_BUF); 1689797ac58cSKevin Wolf if (ctx->buf == NULL) { 1690556c2b60SAlberto Garcia block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 1691797ac58cSKevin Wolf g_free(ctx); 1692b32d7a39SMax Reitz return -EINVAL; 1693797ac58cSKevin Wolf } 1694797ac58cSKevin Wolf 169550290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &ctx->t1); 16964c7b7e9bSMax Reitz block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size, 16974c7b7e9bSMax Reitz BLOCK_ACCT_WRITE); 16985ceb7765SKevin Wolf 169900e2a04cSStefan Hajnoczi blk_aio_pwritev(blk, ctx->offset, &ctx->qiov, ctx->flags, 170000e2a04cSStefan Hajnoczi aio_write_done, ctx); 17015ceb7765SKevin Wolf } 1702b32d7a39SMax Reitz 1703b32d7a39SMax Reitz return 0; 1704797ac58cSKevin Wolf } 1705797ac58cSKevin Wolf 1706b32d7a39SMax Reitz static int aio_flush_f(BlockBackend *blk, int argc, char **argv) 1707797ac58cSKevin Wolf { 1708556c2b60SAlberto Garcia BlockAcctCookie cookie; 1709556c2b60SAlberto Garcia block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH); 17104c7b7e9bSMax Reitz blk_drain_all(); 1711556c2b60SAlberto Garcia block_acct_done(blk_get_stats(blk), &cookie); 1712b32d7a39SMax Reitz return 0; 1713797ac58cSKevin Wolf } 1714797ac58cSKevin Wolf 1715797ac58cSKevin Wolf static const cmdinfo_t aio_flush_cmd = { 1716797ac58cSKevin Wolf .name = "aio_flush", 1717797ac58cSKevin Wolf .cfunc = aio_flush_f, 1718797ac58cSKevin Wolf .oneline = "completes all outstanding aio requests" 1719797ac58cSKevin Wolf }; 1720797ac58cSKevin Wolf 1721b32d7a39SMax Reitz static int flush_f(BlockBackend *blk, int argc, char **argv) 1722797ac58cSKevin Wolf { 1723b32d7a39SMax Reitz return blk_flush(blk); 1724797ac58cSKevin Wolf } 1725797ac58cSKevin Wolf 1726797ac58cSKevin Wolf static const cmdinfo_t flush_cmd = { 1727797ac58cSKevin Wolf .name = "flush", 1728797ac58cSKevin Wolf .altname = "f", 1729797ac58cSKevin Wolf .cfunc = flush_f, 1730797ac58cSKevin Wolf .oneline = "flush all in-core file state to disk", 1731797ac58cSKevin Wolf }; 1732797ac58cSKevin Wolf 173342ba0225SVladimir Sementsov-Ogievskiy static int truncate_f(BlockBackend *blk, int argc, char **argv); 173442ba0225SVladimir Sementsov-Ogievskiy static const cmdinfo_t truncate_cmd = { 173542ba0225SVladimir Sementsov-Ogievskiy .name = "truncate", 173642ba0225SVladimir Sementsov-Ogievskiy .altname = "t", 173742ba0225SVladimir Sementsov-Ogievskiy .cfunc = truncate_f, 173842ba0225SVladimir Sementsov-Ogievskiy .perm = BLK_PERM_WRITE | BLK_PERM_RESIZE, 173942ba0225SVladimir Sementsov-Ogievskiy .argmin = 1, 174042ba0225SVladimir Sementsov-Ogievskiy .argmax = 3, 174142ba0225SVladimir Sementsov-Ogievskiy .args = "[-m prealloc_mode] off", 174242ba0225SVladimir Sementsov-Ogievskiy .oneline = "truncates the current file at the given offset", 174342ba0225SVladimir Sementsov-Ogievskiy }; 174442ba0225SVladimir Sementsov-Ogievskiy 1745b32d7a39SMax Reitz static int truncate_f(BlockBackend *blk, int argc, char **argv) 1746797ac58cSKevin Wolf { 1747ed3d2ec9SMax Reitz Error *local_err = NULL; 1748797ac58cSKevin Wolf int64_t offset; 174942ba0225SVladimir Sementsov-Ogievskiy int c, ret; 175042ba0225SVladimir Sementsov-Ogievskiy PreallocMode prealloc = PREALLOC_MODE_OFF; 1751797ac58cSKevin Wolf 175242ba0225SVladimir Sementsov-Ogievskiy while ((c = getopt(argc, argv, "m:")) != -1) { 175342ba0225SVladimir Sementsov-Ogievskiy switch (c) { 175442ba0225SVladimir Sementsov-Ogievskiy case 'm': 175542ba0225SVladimir Sementsov-Ogievskiy prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, 175642ba0225SVladimir Sementsov-Ogievskiy PREALLOC_MODE__MAX, NULL); 175742ba0225SVladimir Sementsov-Ogievskiy if (prealloc == PREALLOC_MODE__MAX) { 175842ba0225SVladimir Sementsov-Ogievskiy error_report("Invalid preallocation mode '%s'", optarg); 175942ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 176042ba0225SVladimir Sementsov-Ogievskiy } 176142ba0225SVladimir Sementsov-Ogievskiy break; 176242ba0225SVladimir Sementsov-Ogievskiy default: 176342ba0225SVladimir Sementsov-Ogievskiy qemuio_command_usage(&truncate_cmd); 176442ba0225SVladimir Sementsov-Ogievskiy return -EINVAL; 176542ba0225SVladimir Sementsov-Ogievskiy } 176642ba0225SVladimir Sementsov-Ogievskiy } 176742ba0225SVladimir Sementsov-Ogievskiy 176842ba0225SVladimir Sementsov-Ogievskiy offset = cvtnum(argv[optind]); 1769797ac58cSKevin Wolf if (offset < 0) { 1770a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1771b32d7a39SMax Reitz return offset; 1772797ac58cSKevin Wolf } 1773797ac58cSKevin Wolf 1774e8d04f92SMax Reitz /* 1775e8d04f92SMax Reitz * qemu-io is a debugging tool, so let us be strict here and pass 1776e8d04f92SMax Reitz * exact=true. It is better to err on the "emit more errors" side 1777e8d04f92SMax Reitz * than to be overly permissive. 1778e8d04f92SMax Reitz */ 177942ba0225SVladimir Sementsov-Ogievskiy ret = blk_truncate(blk, offset, false, prealloc, 0, &local_err); 1780797ac58cSKevin Wolf if (ret < 0) { 1781ed3d2ec9SMax Reitz error_report_err(local_err); 1782b32d7a39SMax Reitz return ret; 1783797ac58cSKevin Wolf } 1784b32d7a39SMax Reitz 1785b32d7a39SMax Reitz return 0; 1786797ac58cSKevin Wolf } 1787797ac58cSKevin Wolf 1788b32d7a39SMax Reitz static int length_f(BlockBackend *blk, int argc, char **argv) 1789797ac58cSKevin Wolf { 1790797ac58cSKevin Wolf int64_t size; 1791797ac58cSKevin Wolf char s1[64]; 1792797ac58cSKevin Wolf 17934c7b7e9bSMax Reitz size = blk_getlength(blk); 1794797ac58cSKevin Wolf if (size < 0) { 1795797ac58cSKevin Wolf printf("getlength: %s\n", strerror(-size)); 1796b32d7a39SMax Reitz return size; 1797797ac58cSKevin Wolf } 1798797ac58cSKevin Wolf 1799797ac58cSKevin Wolf cvtstr(size, s1, sizeof(s1)); 1800797ac58cSKevin Wolf printf("%s\n", s1); 1801b32d7a39SMax Reitz return 0; 1802797ac58cSKevin Wolf } 1803797ac58cSKevin Wolf 1804797ac58cSKevin Wolf 1805797ac58cSKevin Wolf static const cmdinfo_t length_cmd = { 1806797ac58cSKevin Wolf .name = "length", 1807797ac58cSKevin Wolf .altname = "l", 1808797ac58cSKevin Wolf .cfunc = length_f, 1809797ac58cSKevin Wolf .oneline = "gets the length of the current file", 1810797ac58cSKevin Wolf }; 1811797ac58cSKevin Wolf 1812797ac58cSKevin Wolf 1813b32d7a39SMax Reitz static int info_f(BlockBackend *blk, int argc, char **argv) 1814797ac58cSKevin Wolf { 18154c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1816797ac58cSKevin Wolf BlockDriverInfo bdi; 1817a8d8ecb7SMax Reitz ImageInfoSpecific *spec_info; 18181bf6e9caSAndrey Shinkevich Error *local_err = NULL; 1819797ac58cSKevin Wolf char s1[64], s2[64]; 1820797ac58cSKevin Wolf int ret; 1821797ac58cSKevin Wolf 1822797ac58cSKevin Wolf if (bs->drv && bs->drv->format_name) { 1823797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->format_name); 1824797ac58cSKevin Wolf } 1825797ac58cSKevin Wolf if (bs->drv && bs->drv->protocol_name) { 1826797ac58cSKevin Wolf printf("format name: %s\n", bs->drv->protocol_name); 1827797ac58cSKevin Wolf } 1828797ac58cSKevin Wolf 1829797ac58cSKevin Wolf ret = bdrv_get_info(bs, &bdi); 1830797ac58cSKevin Wolf if (ret) { 1831b32d7a39SMax Reitz return ret; 1832797ac58cSKevin Wolf } 1833797ac58cSKevin Wolf 1834797ac58cSKevin Wolf cvtstr(bdi.cluster_size, s1, sizeof(s1)); 1835797ac58cSKevin Wolf cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); 1836797ac58cSKevin Wolf 1837797ac58cSKevin Wolf printf("cluster size: %s\n", s1); 1838797ac58cSKevin Wolf printf("vm state offset: %s\n", s2); 1839797ac58cSKevin Wolf 18401bf6e9caSAndrey Shinkevich spec_info = bdrv_get_specific_info(bs, &local_err); 18411bf6e9caSAndrey Shinkevich if (local_err) { 18421bf6e9caSAndrey Shinkevich error_report_err(local_err); 18431bf6e9caSAndrey Shinkevich return -EIO; 18441bf6e9caSAndrey Shinkevich } 1845a8d8ecb7SMax Reitz if (spec_info) { 18463716470bSHanna Reitz bdrv_image_info_specific_dump(spec_info, 184776c9e975SHanna Reitz "Format specific information:\n", 184876c9e975SHanna Reitz 0); 1849a8d8ecb7SMax Reitz qapi_free_ImageInfoSpecific(spec_info); 1850a8d8ecb7SMax Reitz } 1851b32d7a39SMax Reitz 1852b32d7a39SMax Reitz return 0; 1853797ac58cSKevin Wolf } 1854797ac58cSKevin Wolf 1855797ac58cSKevin Wolf 1856797ac58cSKevin Wolf 1857797ac58cSKevin Wolf static const cmdinfo_t info_cmd = { 1858797ac58cSKevin Wolf .name = "info", 1859797ac58cSKevin Wolf .altname = "i", 1860797ac58cSKevin Wolf .cfunc = info_f, 1861797ac58cSKevin Wolf .oneline = "prints information about the current file", 1862797ac58cSKevin Wolf }; 1863797ac58cSKevin Wolf 1864797ac58cSKevin Wolf static void discard_help(void) 1865797ac58cSKevin Wolf { 1866797ac58cSKevin Wolf printf( 1867797ac58cSKevin Wolf "\n" 1868797ac58cSKevin Wolf " discards a range of bytes from the given offset\n" 1869797ac58cSKevin Wolf "\n" 1870797ac58cSKevin Wolf " Example:\n" 1871797ac58cSKevin Wolf " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n" 1872797ac58cSKevin Wolf "\n" 1873797ac58cSKevin Wolf " Discards a segment of the currently open file.\n" 1874797ac58cSKevin Wolf " -C, -- report statistics in a machine parsable format\n" 1875797ac58cSKevin Wolf " -q, -- quiet mode, do not show I/O statistics\n" 1876797ac58cSKevin Wolf "\n"); 1877797ac58cSKevin Wolf } 1878797ac58cSKevin Wolf 1879b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv); 1880797ac58cSKevin Wolf 1881797ac58cSKevin Wolf static const cmdinfo_t discard_cmd = { 1882797ac58cSKevin Wolf .name = "discard", 1883797ac58cSKevin Wolf .altname = "d", 1884797ac58cSKevin Wolf .cfunc = discard_f, 1885887354bdSKevin Wolf .perm = BLK_PERM_WRITE, 1886797ac58cSKevin Wolf .argmin = 2, 1887797ac58cSKevin Wolf .argmax = -1, 1888797ac58cSKevin Wolf .args = "[-Cq] off len", 1889797ac58cSKevin Wolf .oneline = "discards a number of bytes at a specified offset", 1890797ac58cSKevin Wolf .help = discard_help, 1891797ac58cSKevin Wolf }; 1892797ac58cSKevin Wolf 1893b32d7a39SMax Reitz static int discard_f(BlockBackend *blk, int argc, char **argv) 1894797ac58cSKevin Wolf { 189550290c00SAlex Bennée struct timespec t1, t2; 1896dc38852aSEric Blake bool Cflag = false, qflag = false; 1897797ac58cSKevin Wolf int c, ret; 1898f5a5ca79SManos Pitsidianakis int64_t offset, bytes; 1899797ac58cSKevin Wolf 1900b062ad86SEric Blake while ((c = getopt(argc, argv, "Cq")) != -1) { 1901797ac58cSKevin Wolf switch (c) { 1902797ac58cSKevin Wolf case 'C': 1903dc38852aSEric Blake Cflag = true; 1904797ac58cSKevin Wolf break; 1905797ac58cSKevin Wolf case 'q': 1906dc38852aSEric Blake qflag = true; 1907797ac58cSKevin Wolf break; 1908797ac58cSKevin Wolf default: 1909b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1910b32d7a39SMax Reitz return -EINVAL; 1911797ac58cSKevin Wolf } 1912797ac58cSKevin Wolf } 1913797ac58cSKevin Wolf 1914797ac58cSKevin Wolf if (optind != argc - 2) { 1915b444d0e9SMax Reitz qemuio_command_usage(&discard_cmd); 1916b32d7a39SMax Reitz return -EINVAL; 1917797ac58cSKevin Wolf } 1918797ac58cSKevin Wolf 1919797ac58cSKevin Wolf offset = cvtnum(argv[optind]); 1920797ac58cSKevin Wolf if (offset < 0) { 1921a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[optind]); 1922b32d7a39SMax Reitz return offset; 1923797ac58cSKevin Wolf } 1924797ac58cSKevin Wolf 1925797ac58cSKevin Wolf optind++; 1926f5a5ca79SManos Pitsidianakis bytes = cvtnum(argv[optind]); 1927f5a5ca79SManos Pitsidianakis if (bytes < 0) { 1928f5a5ca79SManos Pitsidianakis print_cvtnum_err(bytes, argv[optind]); 1929b32d7a39SMax Reitz return bytes; 193041ae31e3SAlberto Garcia } else if (bytes > BDRV_REQUEST_MAX_BYTES) { 19319b0beaf3SJohn Snow printf("length cannot exceed %"PRIu64", given %s\n", 193241ae31e3SAlberto Garcia (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); 1933b32d7a39SMax Reitz return -EINVAL; 1934797ac58cSKevin Wolf } 1935797ac58cSKevin Wolf 193650290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t1); 1937f5a5ca79SManos Pitsidianakis ret = blk_pdiscard(blk, offset, bytes); 193850290c00SAlex Bennée clock_gettime(CLOCK_MONOTONIC, &t2); 1939797ac58cSKevin Wolf 1940797ac58cSKevin Wolf if (ret < 0) { 1941797ac58cSKevin Wolf printf("discard failed: %s\n", strerror(-ret)); 1942b32d7a39SMax Reitz return ret; 1943797ac58cSKevin Wolf } 1944797ac58cSKevin Wolf 1945797ac58cSKevin Wolf /* Finally, report back -- -C gives a parsable format */ 1946797ac58cSKevin Wolf if (!qflag) { 1947797ac58cSKevin Wolf t2 = tsub(t2, t1); 1948f5a5ca79SManos Pitsidianakis print_report("discard", &t2, offset, bytes, bytes, 1, Cflag); 1949797ac58cSKevin Wolf } 1950b32d7a39SMax Reitz 1951b32d7a39SMax Reitz return 0; 1952797ac58cSKevin Wolf } 1953797ac58cSKevin Wolf 1954b32d7a39SMax Reitz static int alloc_f(BlockBackend *blk, int argc, char **argv) 1955797ac58cSKevin Wolf { 19564c7b7e9bSMax Reitz BlockDriverState *bs = blk_bs(blk); 1957d6a644bbSEric Blake int64_t offset, start, remaining, count; 1958797ac58cSKevin Wolf char s1[64]; 1959d6a644bbSEric Blake int ret; 1960d6a644bbSEric Blake int64_t num, sum_alloc; 1961797ac58cSKevin Wolf 1962d6a644bbSEric Blake start = offset = cvtnum(argv[1]); 1963797ac58cSKevin Wolf if (offset < 0) { 1964a9ecfa00SJohn Snow print_cvtnum_err(offset, argv[1]); 1965b32d7a39SMax Reitz return offset; 1966797ac58cSKevin Wolf } 1967797ac58cSKevin Wolf 1968797ac58cSKevin Wolf if (argc == 3) { 19694401fdc7SEric Blake count = cvtnum(argv[2]); 19704401fdc7SEric Blake if (count < 0) { 19714401fdc7SEric Blake print_cvtnum_err(count, argv[2]); 1972b32d7a39SMax Reitz return count; 1973797ac58cSKevin Wolf } 1974797ac58cSKevin Wolf } else { 19754401fdc7SEric Blake count = BDRV_SECTOR_SIZE; 1976797ac58cSKevin Wolf } 1977797ac58cSKevin Wolf 1978d6a644bbSEric Blake remaining = count; 1979797ac58cSKevin Wolf sum_alloc = 0; 1980797ac58cSKevin Wolf while (remaining) { 1981d6a644bbSEric Blake ret = bdrv_is_allocated(bs, offset, remaining, &num); 1982d663640cSPaolo Bonzini if (ret < 0) { 1983d663640cSPaolo Bonzini printf("is_allocated failed: %s\n", strerror(-ret)); 1984b32d7a39SMax Reitz return ret; 1985d663640cSPaolo Bonzini } 1986d6a644bbSEric Blake offset += num; 1987797ac58cSKevin Wolf remaining -= num; 1988797ac58cSKevin Wolf if (ret) { 1989797ac58cSKevin Wolf sum_alloc += num; 1990797ac58cSKevin Wolf } 1991797ac58cSKevin Wolf if (num == 0) { 1992d6a644bbSEric Blake count -= remaining; 1993797ac58cSKevin Wolf remaining = 0; 1994797ac58cSKevin Wolf } 1995797ac58cSKevin Wolf } 1996797ac58cSKevin Wolf 1997d6a644bbSEric Blake cvtstr(start, s1, sizeof(s1)); 1998797ac58cSKevin Wolf 19994401fdc7SEric Blake printf("%"PRId64"/%"PRId64" bytes allocated at offset %s\n", 2000d6a644bbSEric Blake sum_alloc, count, s1); 2001b32d7a39SMax Reitz return 0; 2002797ac58cSKevin Wolf } 2003797ac58cSKevin Wolf 2004797ac58cSKevin Wolf static const cmdinfo_t alloc_cmd = { 2005797ac58cSKevin Wolf .name = "alloc", 2006797ac58cSKevin Wolf .altname = "a", 2007797ac58cSKevin Wolf .argmin = 1, 2008797ac58cSKevin Wolf .argmax = 2, 2009797ac58cSKevin Wolf .cfunc = alloc_f, 20104401fdc7SEric Blake .args = "offset [count]", 20114401fdc7SEric Blake .oneline = "checks if offset is allocated in the file", 2012797ac58cSKevin Wolf }; 2013797ac58cSKevin Wolf 2014797ac58cSKevin Wolf 2015d6a644bbSEric Blake static int map_is_allocated(BlockDriverState *bs, int64_t offset, 2016d6a644bbSEric Blake int64_t bytes, int64_t *pnum) 2017797ac58cSKevin Wolf { 2018d6a644bbSEric Blake int64_t num; 2019797ac58cSKevin Wolf int ret, firstret; 2020797ac58cSKevin Wolf 2021087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 2022797ac58cSKevin Wolf if (ret < 0) { 2023797ac58cSKevin Wolf return ret; 2024797ac58cSKevin Wolf } 2025797ac58cSKevin Wolf 2026797ac58cSKevin Wolf firstret = ret; 2027797ac58cSKevin Wolf *pnum = num; 2028797ac58cSKevin Wolf 2029d6a644bbSEric Blake while (bytes > 0 && ret == firstret) { 2030d6a644bbSEric Blake offset += num; 2031d6a644bbSEric Blake bytes -= num; 2032797ac58cSKevin Wolf 2033087f2fb3SEric Blake ret = bdrv_is_allocated(bs, offset, bytes, &num); 20344b25bbc4SMax Reitz if (ret == firstret && num) { 2035797ac58cSKevin Wolf *pnum += num; 2036797ac58cSKevin Wolf } else { 2037797ac58cSKevin Wolf break; 2038797ac58cSKevin Wolf } 2039797ac58cSKevin Wolf } 2040797ac58cSKevin Wolf 2041797ac58cSKevin Wolf return firstret; 2042797ac58cSKevin Wolf } 2043797ac58cSKevin Wolf 2044b32d7a39SMax Reitz static int map_f(BlockBackend *blk, int argc, char **argv) 2045797ac58cSKevin Wolf { 2046d6a644bbSEric Blake int64_t offset, bytes; 20476f3c90afSEric Blake char s1[64], s2[64]; 2048797ac58cSKevin Wolf int64_t num; 2049797ac58cSKevin Wolf int ret; 2050797ac58cSKevin Wolf const char *retstr; 2051797ac58cSKevin Wolf 2052797ac58cSKevin Wolf offset = 0; 2053d6a644bbSEric Blake bytes = blk_getlength(blk); 2054d6a644bbSEric Blake if (bytes < 0) { 2055d6a644bbSEric Blake error_report("Failed to query image length: %s", strerror(-bytes)); 2056b32d7a39SMax Reitz return bytes; 20574c7b7e9bSMax Reitz } 20584c7b7e9bSMax Reitz 2059d6a644bbSEric Blake while (bytes) { 2060d6a644bbSEric Blake ret = map_is_allocated(blk_bs(blk), offset, bytes, &num); 2061797ac58cSKevin Wolf if (ret < 0) { 2062797ac58cSKevin Wolf error_report("Failed to get allocation status: %s", strerror(-ret)); 2063b32d7a39SMax Reitz return ret; 20644b25bbc4SMax Reitz } else if (!num) { 20654b25bbc4SMax Reitz error_report("Unexpected end of image"); 2066b32d7a39SMax Reitz return -EIO; 2067797ac58cSKevin Wolf } 2068797ac58cSKevin Wolf 2069797ac58cSKevin Wolf retstr = ret ? " allocated" : "not allocated"; 2070d6a644bbSEric Blake cvtstr(num, s1, sizeof(s1)); 2071d6a644bbSEric Blake cvtstr(offset, s2, sizeof(s2)); 20726f3c90afSEric Blake printf("%s (0x%" PRIx64 ") bytes %s at offset %s (0x%" PRIx64 ")\n", 2073d6a644bbSEric Blake s1, num, retstr, s2, offset); 2074797ac58cSKevin Wolf 2075797ac58cSKevin Wolf offset += num; 2076d6a644bbSEric Blake bytes -= num; 2077d6a644bbSEric Blake } 2078b32d7a39SMax Reitz 2079b32d7a39SMax Reitz return 0; 2080797ac58cSKevin Wolf } 2081797ac58cSKevin Wolf 2082797ac58cSKevin Wolf static const cmdinfo_t map_cmd = { 2083797ac58cSKevin Wolf .name = "map", 2084797ac58cSKevin Wolf .argmin = 0, 2085797ac58cSKevin Wolf .argmax = 0, 2086797ac58cSKevin Wolf .cfunc = map_f, 2087797ac58cSKevin Wolf .args = "", 2088797ac58cSKevin Wolf .oneline = "prints the allocated areas of a file", 2089797ac58cSKevin Wolf }; 2090797ac58cSKevin Wolf 20915bbd2e59SKevin Wolf static void reopen_help(void) 20925bbd2e59SKevin Wolf { 20935bbd2e59SKevin Wolf printf( 20945bbd2e59SKevin Wolf "\n" 20955bbd2e59SKevin Wolf " Changes the open options of an already opened image\n" 20965bbd2e59SKevin Wolf "\n" 20975bbd2e59SKevin Wolf " Example:\n" 20985bbd2e59SKevin Wolf " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n" 20995bbd2e59SKevin Wolf "\n" 21005bbd2e59SKevin Wolf " -r, -- Reopen the image read-only\n" 2101ea92203cSKevin Wolf " -w, -- Reopen the image read-write\n" 21025bbd2e59SKevin Wolf " -c, -- Change the cache mode to the given value\n" 21035bbd2e59SKevin Wolf " -o, -- Changes block driver options (cf. 'open' command)\n" 21045bbd2e59SKevin Wolf "\n"); 21055bbd2e59SKevin Wolf } 21065bbd2e59SKevin Wolf 2107b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv); 21085bbd2e59SKevin Wolf 21095bbd2e59SKevin Wolf static QemuOptsList reopen_opts = { 21105bbd2e59SKevin Wolf .name = "reopen", 21115bbd2e59SKevin Wolf .merge_lists = true, 21125bbd2e59SKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head), 21135bbd2e59SKevin Wolf .desc = { 21145bbd2e59SKevin Wolf /* no elements => accept any params */ 21155bbd2e59SKevin Wolf { /* end of list */ } 21165bbd2e59SKevin Wolf }, 21175bbd2e59SKevin Wolf }; 21185bbd2e59SKevin Wolf 21195bbd2e59SKevin Wolf static const cmdinfo_t reopen_cmd = { 21205bbd2e59SKevin Wolf .name = "reopen", 21215bbd2e59SKevin Wolf .argmin = 0, 21225bbd2e59SKevin Wolf .argmax = -1, 21235bbd2e59SKevin Wolf .cfunc = reopen_f, 2124ea92203cSKevin Wolf .args = "[(-r|-w)] [-c cache] [-o options]", 21255bbd2e59SKevin Wolf .oneline = "reopens an image with new options", 21265bbd2e59SKevin Wolf .help = reopen_help, 21275bbd2e59SKevin Wolf }; 21285bbd2e59SKevin Wolf 2129b32d7a39SMax Reitz static int reopen_f(BlockBackend *blk, int argc, char **argv) 21305bbd2e59SKevin Wolf { 21315bbd2e59SKevin Wolf BlockDriverState *bs = blk_bs(blk); 21325bbd2e59SKevin Wolf QemuOpts *qopts; 21335bbd2e59SKevin Wolf QDict *opts; 21345bbd2e59SKevin Wolf int c; 21355bbd2e59SKevin Wolf int flags = bs->open_flags; 213619dbecdcSKevin Wolf bool writethrough = !blk_enable_write_cache(blk); 2137ea92203cSKevin Wolf bool has_rw_option = false; 2138dc900c35SAlberto Garcia bool has_cache_option = false; 21395bbd2e59SKevin Wolf Error *local_err = NULL; 21405bbd2e59SKevin Wolf 2141ea92203cSKevin Wolf while ((c = getopt(argc, argv, "c:o:rw")) != -1) { 21425bbd2e59SKevin Wolf switch (c) { 21435bbd2e59SKevin Wolf case 'c': 214419dbecdcSKevin Wolf if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { 21455bbd2e59SKevin Wolf error_report("Invalid cache option: %s", optarg); 2146b32d7a39SMax Reitz return -EINVAL; 21475bbd2e59SKevin Wolf } 2148dc900c35SAlberto Garcia has_cache_option = true; 21495bbd2e59SKevin Wolf break; 21505bbd2e59SKevin Wolf case 'o': 21515bbd2e59SKevin Wolf if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) { 21525bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2153b32d7a39SMax Reitz return -EINVAL; 21545bbd2e59SKevin Wolf } 21555bbd2e59SKevin Wolf break; 21565bbd2e59SKevin Wolf case 'r': 2157ea92203cSKevin Wolf if (has_rw_option) { 2158ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2159b32d7a39SMax Reitz return -EINVAL; 2160ea92203cSKevin Wolf } 21615bbd2e59SKevin Wolf flags &= ~BDRV_O_RDWR; 2162ea92203cSKevin Wolf has_rw_option = true; 2163ea92203cSKevin Wolf break; 2164ea92203cSKevin Wolf case 'w': 2165ea92203cSKevin Wolf if (has_rw_option) { 2166ea92203cSKevin Wolf error_report("Only one -r/-w option may be given"); 2167b32d7a39SMax Reitz return -EINVAL; 2168ea92203cSKevin Wolf } 2169ea92203cSKevin Wolf flags |= BDRV_O_RDWR; 2170ea92203cSKevin Wolf has_rw_option = true; 21715bbd2e59SKevin Wolf break; 21725bbd2e59SKevin Wolf default: 21735bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2174b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2175b32d7a39SMax Reitz return -EINVAL; 21765bbd2e59SKevin Wolf } 21775bbd2e59SKevin Wolf } 21785bbd2e59SKevin Wolf 21795bbd2e59SKevin Wolf if (optind != argc) { 21805bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 2181b444d0e9SMax Reitz qemuio_command_usage(&reopen_cmd); 2182b32d7a39SMax Reitz return -EINVAL; 21835bbd2e59SKevin Wolf } 21845bbd2e59SKevin Wolf 2185a8003ec4SAlberto Garcia if (!writethrough != blk_enable_write_cache(blk) && 218619dbecdcSKevin Wolf blk_get_attached_dev(blk)) 218719dbecdcSKevin Wolf { 218819dbecdcSKevin Wolf error_report("Cannot change cache.writeback: Device attached"); 218919dbecdcSKevin Wolf qemu_opts_reset(&reopen_opts); 2190b32d7a39SMax Reitz return -EBUSY; 219119dbecdcSKevin Wolf } 219219dbecdcSKevin Wolf 2193f3adefb2SKevin Wolf if (!(flags & BDRV_O_RDWR)) { 2194f3adefb2SKevin Wolf uint64_t orig_perm, orig_shared_perm; 2195f3adefb2SKevin Wolf 2196f3adefb2SKevin Wolf bdrv_drain(bs); 2197f3adefb2SKevin Wolf 2198f3adefb2SKevin Wolf blk_get_perm(blk, &orig_perm, &orig_shared_perm); 2199f3adefb2SKevin Wolf blk_set_perm(blk, 2200f3adefb2SKevin Wolf orig_perm & ~(BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED), 2201f3adefb2SKevin Wolf orig_shared_perm, 2202f3adefb2SKevin Wolf &error_abort); 2203f3adefb2SKevin Wolf } 2204f3adefb2SKevin Wolf 22055bbd2e59SKevin Wolf qopts = qemu_opts_find(&reopen_opts, NULL); 2206dc900c35SAlberto Garcia opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new(); 22075bbd2e59SKevin Wolf qemu_opts_reset(&reopen_opts); 22085bbd2e59SKevin Wolf 2209dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) { 2210dc900c35SAlberto Garcia if (has_rw_option) { 2211dc900c35SAlberto Garcia error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'"); 2212dc900c35SAlberto Garcia qobject_unref(opts); 2213dc900c35SAlberto Garcia return -EINVAL; 2214dc900c35SAlberto Garcia } 2215dc900c35SAlberto Garcia } else { 2216dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR)); 2217dc900c35SAlberto Garcia } 2218dc900c35SAlberto Garcia 2219dc900c35SAlberto Garcia if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) || 2220dc900c35SAlberto Garcia qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) { 2221dc900c35SAlberto Garcia if (has_cache_option) { 2222dc900c35SAlberto Garcia error_report("Cannot set both -c and the cache options"); 2223dc900c35SAlberto Garcia qobject_unref(opts); 2224dc900c35SAlberto Garcia return -EINVAL; 2225dc900c35SAlberto Garcia } 2226dc900c35SAlberto Garcia } else { 2227dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE); 2228dc900c35SAlberto Garcia qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH); 2229dc900c35SAlberto Garcia } 2230dc900c35SAlberto Garcia 22316cf42ca2SKevin Wolf bdrv_reopen(bs, opts, true, &local_err); 22321a63a907SKevin Wolf 22335bbd2e59SKevin Wolf if (local_err) { 22345bbd2e59SKevin Wolf error_report_err(local_err); 2235b32d7a39SMax Reitz return -EINVAL; 22365bbd2e59SKevin Wolf } 22375bbd2e59SKevin Wolf 2238b32d7a39SMax Reitz blk_set_enable_write_cache(blk, !writethrough); 2239b32d7a39SMax Reitz return 0; 2240b32d7a39SMax Reitz } 2241b32d7a39SMax Reitz 2242b32d7a39SMax Reitz static int break_f(BlockBackend *blk, int argc, char **argv) 2243797ac58cSKevin Wolf { 2244797ac58cSKevin Wolf int ret; 2245797ac58cSKevin Wolf 22464c7b7e9bSMax Reitz ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]); 2247797ac58cSKevin Wolf if (ret < 0) { 2248797ac58cSKevin Wolf printf("Could not set breakpoint: %s\n", strerror(-ret)); 2249b32d7a39SMax Reitz return ret; 2250797ac58cSKevin Wolf } 2251797ac58cSKevin Wolf 2252b32d7a39SMax Reitz return 0; 2253b32d7a39SMax Reitz } 2254b32d7a39SMax Reitz 2255b32d7a39SMax Reitz static int remove_break_f(BlockBackend *blk, int argc, char **argv) 22564cc70e93SFam Zheng { 22574cc70e93SFam Zheng int ret; 22584cc70e93SFam Zheng 22594c7b7e9bSMax Reitz ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]); 22604cc70e93SFam Zheng if (ret < 0) { 22614cc70e93SFam Zheng printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret)); 2262b32d7a39SMax Reitz return ret; 22634cc70e93SFam Zheng } 2264b32d7a39SMax Reitz 2265b32d7a39SMax Reitz return 0; 22664cc70e93SFam Zheng } 22674cc70e93SFam Zheng 2268797ac58cSKevin Wolf static const cmdinfo_t break_cmd = { 2269797ac58cSKevin Wolf .name = "break", 2270797ac58cSKevin Wolf .argmin = 2, 2271797ac58cSKevin Wolf .argmax = 2, 2272797ac58cSKevin Wolf .cfunc = break_f, 2273797ac58cSKevin Wolf .args = "event tag", 2274797ac58cSKevin Wolf .oneline = "sets a breakpoint on event and tags the stopped " 2275797ac58cSKevin Wolf "request as tag", 2276797ac58cSKevin Wolf }; 2277797ac58cSKevin Wolf 22784cc70e93SFam Zheng static const cmdinfo_t remove_break_cmd = { 22794cc70e93SFam Zheng .name = "remove_break", 22804cc70e93SFam Zheng .argmin = 1, 22814cc70e93SFam Zheng .argmax = 1, 22824cc70e93SFam Zheng .cfunc = remove_break_f, 22834cc70e93SFam Zheng .args = "tag", 22844cc70e93SFam Zheng .oneline = "remove a breakpoint by tag", 22854cc70e93SFam Zheng }; 22864cc70e93SFam Zheng 2287b32d7a39SMax Reitz static int resume_f(BlockBackend *blk, int argc, char **argv) 2288797ac58cSKevin Wolf { 2289797ac58cSKevin Wolf int ret; 2290797ac58cSKevin Wolf 22914c7b7e9bSMax Reitz ret = bdrv_debug_resume(blk_bs(blk), argv[1]); 2292797ac58cSKevin Wolf if (ret < 0) { 2293797ac58cSKevin Wolf printf("Could not resume request: %s\n", strerror(-ret)); 2294b32d7a39SMax Reitz return ret; 2295797ac58cSKevin Wolf } 2296b32d7a39SMax Reitz 2297b32d7a39SMax Reitz return 0; 2298797ac58cSKevin Wolf } 2299797ac58cSKevin Wolf 2300797ac58cSKevin Wolf static const cmdinfo_t resume_cmd = { 2301797ac58cSKevin Wolf .name = "resume", 2302797ac58cSKevin Wolf .argmin = 1, 2303797ac58cSKevin Wolf .argmax = 1, 2304797ac58cSKevin Wolf .cfunc = resume_f, 2305797ac58cSKevin Wolf .args = "tag", 2306797ac58cSKevin Wolf .oneline = "resumes the request tagged as tag", 2307797ac58cSKevin Wolf }; 2308797ac58cSKevin Wolf 2309b32d7a39SMax Reitz static int wait_break_f(BlockBackend *blk, int argc, char **argv) 2310797ac58cSKevin Wolf { 23114c7b7e9bSMax Reitz while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) { 23124c7b7e9bSMax Reitz aio_poll(blk_get_aio_context(blk), true); 2313797ac58cSKevin Wolf } 2314b32d7a39SMax Reitz return 0; 2315797ac58cSKevin Wolf } 2316797ac58cSKevin Wolf 2317797ac58cSKevin Wolf static const cmdinfo_t wait_break_cmd = { 2318797ac58cSKevin Wolf .name = "wait_break", 2319797ac58cSKevin Wolf .argmin = 1, 2320797ac58cSKevin Wolf .argmax = 1, 2321797ac58cSKevin Wolf .cfunc = wait_break_f, 2322797ac58cSKevin Wolf .args = "tag", 2323797ac58cSKevin Wolf .oneline = "waits for the suspension of a request", 2324797ac58cSKevin Wolf }; 2325797ac58cSKevin Wolf 2326b32d7a39SMax Reitz static int abort_f(BlockBackend *blk, int argc, char **argv) 2327797ac58cSKevin Wolf { 2328797ac58cSKevin Wolf abort(); 2329797ac58cSKevin Wolf } 2330797ac58cSKevin Wolf 2331797ac58cSKevin Wolf static const cmdinfo_t abort_cmd = { 2332797ac58cSKevin Wolf .name = "abort", 2333797ac58cSKevin Wolf .cfunc = abort_f, 2334797ac58cSKevin Wolf .flags = CMD_NOFILE_OK, 2335797ac58cSKevin Wolf .oneline = "simulate a program crash using abort(3)", 2336797ac58cSKevin Wolf }; 2337797ac58cSKevin Wolf 23380e82dc7bSMax Reitz static void sigraise_help(void) 23390e82dc7bSMax Reitz { 23400e82dc7bSMax Reitz printf( 23410e82dc7bSMax Reitz "\n" 23420e82dc7bSMax Reitz " raises the given signal\n" 23430e82dc7bSMax Reitz "\n" 23440e82dc7bSMax Reitz " Example:\n" 23450e82dc7bSMax Reitz " 'sigraise %i' - raises SIGTERM\n" 23460e82dc7bSMax Reitz "\n" 23470e82dc7bSMax Reitz " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n" 23480e82dc7bSMax Reitz " given to sigraise.\n" 23490e82dc7bSMax Reitz "\n", SIGTERM); 23500e82dc7bSMax Reitz } 23510e82dc7bSMax Reitz 2352b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv); 23530e82dc7bSMax Reitz 23540e82dc7bSMax Reitz static const cmdinfo_t sigraise_cmd = { 23550e82dc7bSMax Reitz .name = "sigraise", 23560e82dc7bSMax Reitz .cfunc = sigraise_f, 23570e82dc7bSMax Reitz .argmin = 1, 23580e82dc7bSMax Reitz .argmax = 1, 23590e82dc7bSMax Reitz .flags = CMD_NOFILE_OK, 23600e82dc7bSMax Reitz .args = "signal", 23610e82dc7bSMax Reitz .oneline = "raises a signal", 23620e82dc7bSMax Reitz .help = sigraise_help, 23630e82dc7bSMax Reitz }; 23640e82dc7bSMax Reitz 2365b32d7a39SMax Reitz static int sigraise_f(BlockBackend *blk, int argc, char **argv) 23660e82dc7bSMax Reitz { 23679b0beaf3SJohn Snow int64_t sig = cvtnum(argv[1]); 23680e82dc7bSMax Reitz if (sig < 0) { 2369a9ecfa00SJohn Snow print_cvtnum_err(sig, argv[1]); 2370b32d7a39SMax Reitz return sig; 23719b0beaf3SJohn Snow } else if (sig > NSIG) { 23729b0beaf3SJohn Snow printf("signal argument '%s' is too large to be a valid signal\n", 23739b0beaf3SJohn Snow argv[1]); 2374b32d7a39SMax Reitz return -EINVAL; 23750e82dc7bSMax Reitz } 23760e82dc7bSMax Reitz 23770e82dc7bSMax Reitz /* Using raise() to kill this process does not necessarily flush all open 23780e82dc7bSMax Reitz * streams. At least stdout and stderr (although the latter should be 23790e82dc7bSMax Reitz * non-buffered anyway) should be flushed, though. */ 23800e82dc7bSMax Reitz fflush(stdout); 23810e82dc7bSMax Reitz fflush(stderr); 23820e82dc7bSMax Reitz 23830e82dc7bSMax Reitz raise(sig); 2384b32d7a39SMax Reitz 2385b32d7a39SMax Reitz return 0; 23860e82dc7bSMax Reitz } 23870e82dc7bSMax Reitz 2388cd33d02aSKevin Wolf static void sleep_cb(void *opaque) 2389cd33d02aSKevin Wolf { 2390cd33d02aSKevin Wolf bool *expired = opaque; 2391cd33d02aSKevin Wolf *expired = true; 2392cd33d02aSKevin Wolf } 2393cd33d02aSKevin Wolf 2394b32d7a39SMax Reitz static int sleep_f(BlockBackend *blk, int argc, char **argv) 2395cd33d02aSKevin Wolf { 2396cd33d02aSKevin Wolf char *endptr; 2397cd33d02aSKevin Wolf long ms; 2398cd33d02aSKevin Wolf struct QEMUTimer *timer; 2399cd33d02aSKevin Wolf bool expired = false; 2400cd33d02aSKevin Wolf 2401cd33d02aSKevin Wolf ms = strtol(argv[1], &endptr, 0); 2402cd33d02aSKevin Wolf if (ms < 0 || *endptr != '\0') { 2403cd33d02aSKevin Wolf printf("%s is not a valid number\n", argv[1]); 2404b32d7a39SMax Reitz return -EINVAL; 2405cd33d02aSKevin Wolf } 2406cd33d02aSKevin Wolf 2407cd33d02aSKevin Wolf timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired); 2408cd33d02aSKevin Wolf timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms); 2409cd33d02aSKevin Wolf 2410cd33d02aSKevin Wolf while (!expired) { 2411cd33d02aSKevin Wolf main_loop_wait(false); 2412cd33d02aSKevin Wolf } 2413cd33d02aSKevin Wolf 2414cd33d02aSKevin Wolf timer_free(timer); 2415b32d7a39SMax Reitz return 0; 2416cd33d02aSKevin Wolf } 2417cd33d02aSKevin Wolf 2418cd33d02aSKevin Wolf static const cmdinfo_t sleep_cmd = { 2419cd33d02aSKevin Wolf .name = "sleep", 2420cd33d02aSKevin Wolf .argmin = 1, 2421cd33d02aSKevin Wolf .argmax = 1, 2422cd33d02aSKevin Wolf .cfunc = sleep_f, 2423cd33d02aSKevin Wolf .flags = CMD_NOFILE_OK, 2424cd33d02aSKevin Wolf .oneline = "waits for the given value in milliseconds", 2425cd33d02aSKevin Wolf }; 2426cd33d02aSKevin Wolf 2427f18a834aSKevin Wolf static void help_oneline(const char *cmd, const cmdinfo_t *ct) 2428f18a834aSKevin Wolf { 2429f18a834aSKevin Wolf printf("%s ", cmd); 2430f18a834aSKevin Wolf 2431f18a834aSKevin Wolf if (ct->args) { 2432f18a834aSKevin Wolf printf("%s ", ct->args); 2433f18a834aSKevin Wolf } 2434f18a834aSKevin Wolf printf("-- %s\n", ct->oneline); 2435f18a834aSKevin Wolf } 2436f18a834aSKevin Wolf 2437f18a834aSKevin Wolf static void help_onecmd(const char *cmd, const cmdinfo_t *ct) 2438f18a834aSKevin Wolf { 2439f18a834aSKevin Wolf help_oneline(cmd, ct); 2440f18a834aSKevin Wolf if (ct->help) { 2441f18a834aSKevin Wolf ct->help(); 2442f18a834aSKevin Wolf } 2443f18a834aSKevin Wolf } 2444f18a834aSKevin Wolf 2445f18a834aSKevin Wolf static void help_all(void) 2446f18a834aSKevin Wolf { 2447f18a834aSKevin Wolf const cmdinfo_t *ct; 2448f18a834aSKevin Wolf 2449f18a834aSKevin Wolf for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { 2450f18a834aSKevin Wolf help_oneline(ct->name, ct); 2451f18a834aSKevin Wolf } 2452f18a834aSKevin Wolf printf("\nUse 'help commandname' for extended help.\n"); 2453f18a834aSKevin Wolf } 2454f18a834aSKevin Wolf 2455b32d7a39SMax Reitz static int help_f(BlockBackend *blk, int argc, char **argv) 2456f18a834aSKevin Wolf { 2457f18a834aSKevin Wolf const cmdinfo_t *ct; 2458f18a834aSKevin Wolf 2459da16f4b8SDr. David Alan Gilbert if (argc < 2) { 2460f18a834aSKevin Wolf help_all(); 2461b32d7a39SMax Reitz return 0; 2462f18a834aSKevin Wolf } 2463f18a834aSKevin Wolf 2464f18a834aSKevin Wolf ct = find_command(argv[1]); 2465f18a834aSKevin Wolf if (ct == NULL) { 2466f18a834aSKevin Wolf printf("command %s not found\n", argv[1]); 2467b32d7a39SMax Reitz return -EINVAL; 2468f18a834aSKevin Wolf } 2469f18a834aSKevin Wolf 2470f18a834aSKevin Wolf help_onecmd(argv[1], ct); 2471b32d7a39SMax Reitz return 0; 2472f18a834aSKevin Wolf } 2473f18a834aSKevin Wolf 2474f18a834aSKevin Wolf static const cmdinfo_t help_cmd = { 2475f18a834aSKevin Wolf .name = "help", 2476f18a834aSKevin Wolf .altname = "?", 2477f18a834aSKevin Wolf .cfunc = help_f, 2478f18a834aSKevin Wolf .argmin = 0, 2479f18a834aSKevin Wolf .argmax = 1, 2480f18a834aSKevin Wolf .flags = CMD_FLAG_GLOBAL, 2481f18a834aSKevin Wolf .args = "[command]", 2482f18a834aSKevin Wolf .oneline = "help for one or all commands", 2483f18a834aSKevin Wolf }; 2484f18a834aSKevin Wolf 248578632a3dSVladimir Sementsov-Ogievskiy /* 248678632a3dSVladimir Sementsov-Ogievskiy * Called with aio context of blk acquired. Or with qemu_get_aio_context() 248778632a3dSVladimir Sementsov-Ogievskiy * context acquired if blk is NULL. 248878632a3dSVladimir Sementsov-Ogievskiy */ 2489b32d7a39SMax Reitz int qemuio_command(BlockBackend *blk, const char *cmd) 2490dd583296SKevin Wolf { 2491dd583296SKevin Wolf char *input; 2492dd583296SKevin Wolf const cmdinfo_t *ct; 2493dd583296SKevin Wolf char **v; 2494dd583296SKevin Wolf int c; 2495b32d7a39SMax Reitz int ret = 0; 2496dd583296SKevin Wolf 2497dd583296SKevin Wolf input = g_strdup(cmd); 2498dd583296SKevin Wolf v = breakline(input, &c); 2499dd583296SKevin Wolf if (c) { 2500dd583296SKevin Wolf ct = find_command(v[0]); 2501dd583296SKevin Wolf if (ct) { 2502b32d7a39SMax Reitz ret = command(blk, ct, c, v); 2503dd583296SKevin Wolf } else { 2504dd583296SKevin Wolf fprintf(stderr, "command \"%s\" not found\n", v[0]); 2505b32d7a39SMax Reitz ret = -EINVAL; 2506dd583296SKevin Wolf } 2507dd583296SKevin Wolf } 2508dd583296SKevin Wolf g_free(input); 2509dd583296SKevin Wolf g_free(v); 2510b32d7a39SMax Reitz 2511b32d7a39SMax Reitz return ret; 2512dd583296SKevin Wolf } 2513dd583296SKevin Wolf 2514797ac58cSKevin Wolf static void __attribute((constructor)) init_qemuio_commands(void) 2515797ac58cSKevin Wolf { 2516797ac58cSKevin Wolf /* initialize commands */ 2517c2cdf5c5SKevin Wolf qemuio_add_command(&help_cmd); 2518c2cdf5c5SKevin Wolf qemuio_add_command(&read_cmd); 2519c2cdf5c5SKevin Wolf qemuio_add_command(&readv_cmd); 2520c2cdf5c5SKevin Wolf qemuio_add_command(&write_cmd); 2521c2cdf5c5SKevin Wolf qemuio_add_command(&writev_cmd); 2522c2cdf5c5SKevin Wolf qemuio_add_command(&aio_read_cmd); 2523c2cdf5c5SKevin Wolf qemuio_add_command(&aio_write_cmd); 2524c2cdf5c5SKevin Wolf qemuio_add_command(&aio_flush_cmd); 2525c2cdf5c5SKevin Wolf qemuio_add_command(&flush_cmd); 2526c2cdf5c5SKevin Wolf qemuio_add_command(&truncate_cmd); 2527c2cdf5c5SKevin Wolf qemuio_add_command(&length_cmd); 2528c2cdf5c5SKevin Wolf qemuio_add_command(&info_cmd); 2529c2cdf5c5SKevin Wolf qemuio_add_command(&discard_cmd); 2530c2cdf5c5SKevin Wolf qemuio_add_command(&alloc_cmd); 2531c2cdf5c5SKevin Wolf qemuio_add_command(&map_cmd); 25325bbd2e59SKevin Wolf qemuio_add_command(&reopen_cmd); 2533c2cdf5c5SKevin Wolf qemuio_add_command(&break_cmd); 25344cc70e93SFam Zheng qemuio_add_command(&remove_break_cmd); 2535c2cdf5c5SKevin Wolf qemuio_add_command(&resume_cmd); 2536c2cdf5c5SKevin Wolf qemuio_add_command(&wait_break_cmd); 2537c2cdf5c5SKevin Wolf qemuio_add_command(&abort_cmd); 2538cd33d02aSKevin Wolf qemuio_add_command(&sleep_cmd); 25390e82dc7bSMax Reitz qemuio_add_command(&sigraise_cmd); 2540797ac58cSKevin Wolf } 2541