| 1 | /* |
| 2 | * Command line utility to exercise the QEMU I/O path. |
| 3 | * |
| 4 | * Copyright (C) 2009 Red Hat, Inc. |
| 5 | * Copyright (c) 2003-2005 Silicon Graphics, Inc. |
| 6 | * |
| 7 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 8 | * See the COPYING file in the top-level directory. |
| 9 | */ |
| 10 | |
| 11 | #include "qemu/osdep.h" |
| 12 | #include <getopt.h> |
| 13 | #include <libgen.h> |
| 14 | #ifndef _WIN32 |
| 15 | #include <termios.h> |
| 16 | #endif |
| 17 | |
| 18 | #include "qemu/help-texts.h" |
| 19 | #include "qemu/cutils.h" |
| 20 | #include "qapi/error.h" |
| 21 | #include "qemu-io.h" |
| 22 | #include "qemu/error-report.h" |
| 23 | #include "qemu/main-loop.h" |
| 24 | #include "qemu/module.h" |
| 25 | #include "qemu/option.h" |
| 26 | #include "qemu/config-file.h" |
| 27 | #include "qemu/readline.h" |
| 28 | #include "qemu/log.h" |
| 29 | #include "qemu/sockets.h" |
| 30 | #include "qobject/qstring.h" |
| 31 | #include "qobject/qdict.h" |
| 32 | #include "qom/object_interfaces.h" |
| 33 | #include "system/block-backend.h" |
| 34 | #include "block/block_int.h" |
| 35 | #include "trace/control.h" |
| 36 | #include "crypto/init.h" |
| 37 | #include "qemu-version.h" |
| 38 | |
| 39 | #define CMD_NOFILE_OK 0x01 |
| 40 | |
| 41 | static BlockBackend *qemuio_blk; |
| 42 | static bool quit_qemu_io; |
| 43 | |
| 44 | /* qemu-io commands passed using -c */ |
| 45 | static int ncmdline; |
| 46 | static char **cmdline; |
| 47 | static bool imageOpts; |
| 48 | |
| 49 | static ReadLineState *readline_state; |
| 50 | |
| 51 | static int ttyEOF; |
| 52 | |
| 53 | static int get_eof_char(void) |
| 54 | { |
| 55 | #ifdef _WIN32 |
| 56 | return 0x4; /* Ctrl-D */ |
| 57 | #else |
| 58 | struct termios tty; |
| 59 | if (tcgetattr(STDIN_FILENO, &tty) != 0) { |
| 60 | if (errno == ENOTTY) { |
| 61 | return 0x0; /* just expect read() == 0 */ |
| 62 | } else { |
| 63 | return 0x4; /* Ctrl-D */ |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | return tty.c_cc[VEOF]; |
| 68 | #endif |
| 69 | } |
| 70 | |
| 71 | static int close_f(BlockBackend *blk, int argc, char **argv, Error **errp) |
| 72 | { |
| 73 | blk_unref(qemuio_blk); |
| 74 | qemuio_blk = NULL; |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | static const cmdinfo_t close_cmd = { |
| 79 | .name = "close", |
| 80 | .altname = "c", |
| 81 | .cfunc = close_f, |
| 82 | .oneline = "close the current open file", |
| 83 | }; |
| 84 | |
| 85 | static int openfile(char *name, int flags, bool writethrough, bool force_share, |
| 86 | QDict *opts) |
| 87 | { |
| 88 | Error *local_err = NULL; |
| 89 | |
| 90 | if (qemuio_blk) { |
| 91 | error_report("file open already, try 'help close'"); |
| 92 | qobject_unref(opts); |
| 93 | return 1; |
| 94 | } |
| 95 | |
| 96 | if (force_share) { |
| 97 | if (!opts) { |
| 98 | opts = qdict_new(); |
| 99 | } |
| 100 | if (qdict_haskey(opts, BDRV_OPT_FORCE_SHARE) |
| 101 | && strcmp(qdict_get_str(opts, BDRV_OPT_FORCE_SHARE), "on")) { |
| 102 | error_report("-U conflicts with image options"); |
| 103 | qobject_unref(opts); |
| 104 | return 1; |
| 105 | } |
| 106 | qdict_put_str(opts, BDRV_OPT_FORCE_SHARE, "on"); |
| 107 | } |
| 108 | qemuio_blk = blk_new_open(name, NULL, opts, flags, &local_err); |
| 109 | if (!qemuio_blk) { |
| 110 | error_reportf_err(local_err, "can't open%s%s: ", |
| 111 | name ? " device " : "", name ?: ""); |
| 112 | return 1; |
| 113 | } |
| 114 | |
| 115 | blk_set_enable_write_cache(qemuio_blk, !writethrough); |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static void open_help(void) |
| 121 | { |
| 122 | printf( |
| 123 | "\n" |
| 124 | " opens a new file in the requested mode\n" |
| 125 | "\n" |
| 126 | " Example:\n" |
| 127 | " 'open -n -o driver=raw /tmp/data' - opens raw data file read-write, uncached\n" |
| 128 | "\n" |
| 129 | " Opens a file for subsequent use by all of the other qemu-io commands.\n" |
| 130 | " -r, -- open file read-only\n" |
| 131 | " -s, -- use snapshot file\n" |
| 132 | " -C, -- use copy-on-read\n" |
| 133 | " -n, -- disable host cache, short for -t none\n" |
| 134 | " -U, -- force shared permissions\n" |
| 135 | " -k, -- use kernel AIO implementation (Linux only, prefer use of -i)\n" |
| 136 | " -i, -- use AIO mode (threads, native or io_uring)\n" |
| 137 | " -t, -- use the given cache mode for the image\n" |
| 138 | " -d, -- use the given discard mode for the image\n" |
| 139 | " -o, -- options to be given to the block driver" |
| 140 | "\n"); |
| 141 | } |
| 142 | |
| 143 | static int open_f(BlockBackend *blk, int argc, char **argv, Error **errp); |
| 144 | |
| 145 | static const cmdinfo_t open_cmd = { |
| 146 | .name = "open", |
| 147 | .altname = "o", |
| 148 | .cfunc = open_f, |
| 149 | .argmin = 1, |
| 150 | .argmax = -1, |
| 151 | .flags = CMD_NOFILE_OK, |
| 152 | .args = "[-rsCnkU] [-t cache] [-d discard] [-o options] [path]", |
| 153 | .oneline = "open the file specified by path", |
| 154 | .help = open_help, |
| 155 | }; |
| 156 | |
| 157 | static QemuOptsList empty_opts = { |
| 158 | .name = "drive", |
| 159 | .merge_lists = true, |
| 160 | .head = QTAILQ_HEAD_INITIALIZER(empty_opts.head), |
| 161 | .desc = { |
| 162 | /* no elements => accept any params */ |
| 163 | { /* end of list */ } |
| 164 | }, |
| 165 | }; |
| 166 | |
| 167 | static int open_f(BlockBackend *blk, int argc, char **argv, Error **errp) |
| 168 | { |
| 169 | int flags = BDRV_O_UNMAP; |
| 170 | int readonly = 0; |
| 171 | bool writethrough = true; |
| 172 | int c; |
| 173 | int ret; |
| 174 | QemuOpts *qopts; |
| 175 | QDict *opts; |
| 176 | bool force_share = false; |
| 177 | |
| 178 | while ((c = getopt(argc, argv, "snCro:ki:t:d:U")) != -1) { |
| 179 | switch (c) { |
| 180 | case 's': |
| 181 | flags |= BDRV_O_SNAPSHOT; |
| 182 | break; |
| 183 | case 'n': |
| 184 | flags |= BDRV_O_NOCACHE; |
| 185 | writethrough = false; |
| 186 | break; |
| 187 | case 'C': |
| 188 | flags |= BDRV_O_COPY_ON_READ; |
| 189 | break; |
| 190 | case 'r': |
| 191 | readonly = 1; |
| 192 | break; |
| 193 | case 'k': |
| 194 | flags |= BDRV_O_NATIVE_AIO; |
| 195 | break; |
| 196 | case 't': |
| 197 | if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { |
| 198 | error_report("Invalid cache option: %s", optarg); |
| 199 | qemu_opts_reset(&empty_opts); |
| 200 | return -EINVAL; |
| 201 | } |
| 202 | break; |
| 203 | case 'd': |
| 204 | if (bdrv_parse_discard_flags(optarg, &flags) < 0) { |
| 205 | error_report("Invalid discard option: %s", optarg); |
| 206 | qemu_opts_reset(&empty_opts); |
| 207 | return -EINVAL; |
| 208 | } |
| 209 | break; |
| 210 | case 'i': |
| 211 | if (bdrv_parse_aio(optarg, &flags) < 0) { |
| 212 | error_report("Invalid aio option: %s", optarg); |
| 213 | qemu_opts_reset(&empty_opts); |
| 214 | return -EINVAL; |
| 215 | } |
| 216 | break; |
| 217 | case 'o': |
| 218 | if (imageOpts) { |
| 219 | printf("--image-opts and 'open -o' are mutually exclusive\n"); |
| 220 | qemu_opts_reset(&empty_opts); |
| 221 | return -EINVAL; |
| 222 | } |
| 223 | if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) { |
| 224 | qemu_opts_reset(&empty_opts); |
| 225 | return -EINVAL; |
| 226 | } |
| 227 | break; |
| 228 | case 'U': |
| 229 | force_share = true; |
| 230 | break; |
| 231 | default: |
| 232 | qemu_opts_reset(&empty_opts); |
| 233 | qemuio_command_usage(&open_cmd); |
| 234 | return -EINVAL; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | if (!readonly) { |
| 239 | flags |= BDRV_O_RDWR; |
| 240 | } |
| 241 | |
| 242 | if (imageOpts && (optind == argc - 1)) { |
| 243 | if (!qemu_opts_parse_noisily(&empty_opts, argv[optind], false)) { |
| 244 | qemu_opts_reset(&empty_opts); |
| 245 | return -EINVAL; |
| 246 | } |
| 247 | optind++; |
| 248 | } |
| 249 | |
| 250 | qopts = qemu_opts_find(&empty_opts, NULL); |
| 251 | opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL; |
| 252 | qemu_opts_reset(&empty_opts); |
| 253 | |
| 254 | if (optind == argc - 1) { |
| 255 | ret = openfile(argv[optind], flags, writethrough, force_share, opts); |
| 256 | } else if (optind == argc) { |
| 257 | ret = openfile(NULL, flags, writethrough, force_share, opts); |
| 258 | } else { |
| 259 | qobject_unref(opts); |
| 260 | qemuio_command_usage(&open_cmd); |
| 261 | return -EINVAL; |
| 262 | } |
| 263 | |
| 264 | if (ret) { |
| 265 | return -EINVAL; |
| 266 | } |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | static int quit_f(BlockBackend *blk, int argc, char **argv, Error **errp) |
| 272 | { |
| 273 | quit_qemu_io = true; |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | static const cmdinfo_t quit_cmd = { |
| 278 | .name = "quit", |
| 279 | .altname = "q", |
| 280 | .cfunc = quit_f, |
| 281 | .argmin = -1, |
| 282 | .argmax = -1, |
| 283 | .flags = CMD_FLAG_GLOBAL, |
| 284 | .oneline = "exit the program", |
| 285 | }; |
| 286 | |
| 287 | static void usage(const char *name) |
| 288 | { |
| 289 | printf( |
| 290 | "Usage: %s [OPTIONS]... [-c STRING]... [file]\n" |
| 291 | "QEMU Disk exerciser\n" |
| 292 | "\n" |
| 293 | " --object OBJECTDEF define an object such as 'secret' for\n" |
| 294 | " passwords and/or encryption keys\n" |
| 295 | " --image-opts treat file as option string\n" |
| 296 | " -c, --cmd STRING execute command with its arguments\n" |
| 297 | " from the given string\n" |
| 298 | " -f, --format FMT specifies the block driver to use\n" |
| 299 | " -r, --read-only export read-only\n" |
| 300 | " -s, --snapshot use snapshot file\n" |
| 301 | " -n, --nocache disable host cache, short for -t none\n" |
| 302 | " -C, --copy-on-read enable copy-on-read\n" |
| 303 | " -m, --misalign misalign allocations for O_DIRECT\n" |
| 304 | " -k, --native-aio use kernel AIO implementation\n" |
| 305 | " (Linux only, prefer use of -i)\n" |
| 306 | " -i, --aio=MODE use AIO mode (threads, native or io_uring)\n" |
| 307 | " -t, --cache=MODE use the given cache mode for the image\n" |
| 308 | " -d, --discard=MODE use the given discard mode for the image\n" |
| 309 | " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
| 310 | " specify tracing options\n" |
| 311 | " see qemu-img(1) man page for full description\n" |
| 312 | " -U, --force-share force shared permissions\n" |
| 313 | " -h, --help display this help and exit\n" |
| 314 | " -V, --version output version information and exit\n" |
| 315 | "\n" |
| 316 | "See '%s -c help' for information on available commands.\n" |
| 317 | "\n" |
| 318 | QEMU_HELP_BOTTOM "\n", |
| 319 | name, name); |
| 320 | } |
| 321 | |
| 322 | static char *get_prompt(void) |
| 323 | { |
| 324 | static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ]; |
| 325 | |
| 326 | if (!prompt[0]) { |
| 327 | snprintf(prompt, sizeof(prompt), "%s> ", g_get_prgname()); |
| 328 | } |
| 329 | |
| 330 | return prompt; |
| 331 | } |
| 332 | |
| 333 | static void G_GNUC_PRINTF(2, 3) readline_printf_func(void *opaque, |
| 334 | const char *fmt, ...) |
| 335 | { |
| 336 | va_list ap; |
| 337 | va_start(ap, fmt); |
| 338 | vprintf(fmt, ap); |
| 339 | va_end(ap); |
| 340 | } |
| 341 | |
| 342 | static void readline_flush_func(void *opaque) |
| 343 | { |
| 344 | fflush(stdout); |
| 345 | } |
| 346 | |
| 347 | static void readline_func(void *opaque, const char *str, void *readline_opaque) |
| 348 | { |
| 349 | char **line = readline_opaque; |
| 350 | *line = g_strdup(str); |
| 351 | } |
| 352 | |
| 353 | static void completion_match(const char *cmd, void *opaque) |
| 354 | { |
| 355 | readline_add_completion(readline_state, cmd); |
| 356 | } |
| 357 | |
| 358 | static void readline_completion_func(void *opaque, const char *str) |
| 359 | { |
| 360 | readline_set_completion_index(readline_state, strlen(str)); |
| 361 | qemuio_complete_command(str, completion_match, NULL); |
| 362 | } |
| 363 | |
| 364 | static char *fetchline_readline(void) |
| 365 | { |
| 366 | char *line = NULL; |
| 367 | |
| 368 | readline_start(readline_state, get_prompt(), 0, readline_func, &line); |
| 369 | while (!line) { |
| 370 | int ch = getchar(); |
| 371 | if (ttyEOF != 0x0 && ch == ttyEOF) { |
| 372 | printf("\n"); |
| 373 | break; |
| 374 | } |
| 375 | readline_handle_byte(readline_state, ch); |
| 376 | } |
| 377 | return line; |
| 378 | } |
| 379 | |
| 380 | #define MAXREADLINESZ 1024 |
| 381 | static char *fetchline_fgets(void) |
| 382 | { |
| 383 | char *p, *line = g_malloc(MAXREADLINESZ); |
| 384 | |
| 385 | if (!fgets(line, MAXREADLINESZ, stdin)) { |
| 386 | g_free(line); |
| 387 | return NULL; |
| 388 | } |
| 389 | |
| 390 | p = line + strlen(line); |
| 391 | if (p != line && p[-1] == '\n') { |
| 392 | p[-1] = '\0'; |
| 393 | } |
| 394 | |
| 395 | return line; |
| 396 | } |
| 397 | |
| 398 | static char *fetchline(void) |
| 399 | { |
| 400 | if (readline_state) { |
| 401 | return fetchline_readline(); |
| 402 | } else { |
| 403 | return fetchline_fgets(); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | static void prep_fetchline(void *opaque) |
| 408 | { |
| 409 | int *fetchable = opaque; |
| 410 | |
| 411 | qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL); |
| 412 | *fetchable= 1; |
| 413 | } |
| 414 | |
| 415 | static int do_qemuio_command(const char *cmd) |
| 416 | { |
| 417 | Error *local_err = NULL; |
| 418 | int ret; |
| 419 | |
| 420 | ret = qemuio_command(qemuio_blk, cmd, &local_err); |
| 421 | if (local_err) { |
| 422 | error_report_err(local_err); |
| 423 | } |
| 424 | return ret; |
| 425 | } |
| 426 | |
| 427 | static int command_loop(void) |
| 428 | { |
| 429 | int i, fetchable = 0, prompted = 0; |
| 430 | int ret, last_error = 0; |
| 431 | char *input; |
| 432 | |
| 433 | for (i = 0; !quit_qemu_io && i < ncmdline; i++) { |
| 434 | ret = do_qemuio_command(cmdline[i]); |
| 435 | if (ret < 0) { |
| 436 | last_error = ret; |
| 437 | } |
| 438 | } |
| 439 | if (cmdline) { |
| 440 | g_free(cmdline); |
| 441 | return last_error; |
| 442 | } |
| 443 | |
| 444 | while (!quit_qemu_io) { |
| 445 | if (!prompted) { |
| 446 | printf("%s", get_prompt()); |
| 447 | fflush(stdout); |
| 448 | qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable); |
| 449 | prompted = 1; |
| 450 | } |
| 451 | |
| 452 | main_loop_wait(false); |
| 453 | |
| 454 | if (!fetchable) { |
| 455 | continue; |
| 456 | } |
| 457 | |
| 458 | input = fetchline(); |
| 459 | if (input == NULL) { |
| 460 | break; |
| 461 | } |
| 462 | ret = do_qemuio_command(input); |
| 463 | g_free(input); |
| 464 | |
| 465 | if (ret < 0) { |
| 466 | last_error = ret; |
| 467 | } |
| 468 | |
| 469 | prompted = 0; |
| 470 | fetchable = 0; |
| 471 | } |
| 472 | qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL); |
| 473 | |
| 474 | return last_error; |
| 475 | } |
| 476 | |
| 477 | static void add_user_command(char *user_cmd) |
| 478 | { |
| 479 | cmdline = g_renew(char *, cmdline, ++ncmdline); |
| 480 | cmdline[ncmdline - 1] = user_cmd; |
| 481 | } |
| 482 | |
| 483 | static void reenable_tty_echo(void) |
| 484 | { |
| 485 | qemu_set_tty_echo(STDIN_FILENO, true); |
| 486 | } |
| 487 | |
| 488 | enum { |
| 489 | OPTION_OBJECT = 256, |
| 490 | OPTION_IMAGE_OPTS = 257, |
| 491 | }; |
| 492 | |
| 493 | static QemuOptsList file_opts = { |
| 494 | .name = "file", |
| 495 | .implied_opt_name = "file", |
| 496 | .head = QTAILQ_HEAD_INITIALIZER(file_opts.head), |
| 497 | .desc = { |
| 498 | /* no elements => accept any params */ |
| 499 | { /* end of list */ } |
| 500 | }, |
| 501 | }; |
| 502 | |
| 503 | int main(int argc, char **argv) |
| 504 | { |
| 505 | int readonly = 0; |
| 506 | const char *sopt = "hVc:d:f:rsnCmki:t:T:U"; |
| 507 | const struct option lopt[] = { |
| 508 | { "help", no_argument, NULL, 'h' }, |
| 509 | { "version", no_argument, NULL, 'V' }, |
| 510 | { "cmd", required_argument, NULL, 'c' }, |
| 511 | { "format", required_argument, NULL, 'f' }, |
| 512 | { "read-only", no_argument, NULL, 'r' }, |
| 513 | { "snapshot", no_argument, NULL, 's' }, |
| 514 | { "nocache", no_argument, NULL, 'n' }, |
| 515 | { "copy-on-read", no_argument, NULL, 'C' }, |
| 516 | { "misalign", no_argument, NULL, 'm' }, |
| 517 | { "native-aio", no_argument, NULL, 'k' }, |
| 518 | { "aio", required_argument, NULL, 'i' }, |
| 519 | { "discard", required_argument, NULL, 'd' }, |
| 520 | { "cache", required_argument, NULL, 't' }, |
| 521 | { "trace", required_argument, NULL, 'T' }, |
| 522 | { "object", required_argument, NULL, OPTION_OBJECT }, |
| 523 | { "image-opts", no_argument, NULL, OPTION_IMAGE_OPTS }, |
| 524 | { "force-share", no_argument, 0, 'U'}, |
| 525 | { NULL, 0, NULL, 0 } |
| 526 | }; |
| 527 | int c; |
| 528 | int opt_index = 0; |
| 529 | int flags = BDRV_O_UNMAP; |
| 530 | int ret; |
| 531 | bool writethrough = true; |
| 532 | QDict *opts = NULL; |
| 533 | const char *format = NULL; |
| 534 | bool force_share = false; |
| 535 | |
| 536 | #ifdef CONFIG_POSIX |
| 537 | signal(SIGPIPE, SIG_IGN); |
| 538 | #endif |
| 539 | |
| 540 | socket_init(); |
| 541 | error_init(argv[0]); |
| 542 | module_call_init(MODULE_INIT_TRACE); |
| 543 | qemu_init_exec_dir(argv[0]); |
| 544 | |
| 545 | qcrypto_init(&error_fatal); |
| 546 | |
| 547 | module_call_init(MODULE_INIT_QOM); |
| 548 | qemu_add_opts(&qemu_trace_opts); |
| 549 | bdrv_init(); |
| 550 | |
| 551 | while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
| 552 | switch (c) { |
| 553 | case 's': |
| 554 | flags |= BDRV_O_SNAPSHOT; |
| 555 | break; |
| 556 | case 'n': |
| 557 | flags |= BDRV_O_NOCACHE; |
| 558 | writethrough = false; |
| 559 | break; |
| 560 | case 'C': |
| 561 | flags |= BDRV_O_COPY_ON_READ; |
| 562 | break; |
| 563 | case 'd': |
| 564 | if (bdrv_parse_discard_flags(optarg, &flags) < 0) { |
| 565 | error_report("Invalid discard option: %s", optarg); |
| 566 | exit(1); |
| 567 | } |
| 568 | break; |
| 569 | case 'f': |
| 570 | format = optarg; |
| 571 | break; |
| 572 | case 'c': |
| 573 | add_user_command(optarg); |
| 574 | break; |
| 575 | case 'r': |
| 576 | readonly = 1; |
| 577 | break; |
| 578 | case 'm': |
| 579 | qemuio_misalign = true; |
| 580 | break; |
| 581 | case 'k': |
| 582 | flags |= BDRV_O_NATIVE_AIO; |
| 583 | break; |
| 584 | case 'i': |
| 585 | if (bdrv_parse_aio(optarg, &flags) < 0) { |
| 586 | error_report("Invalid aio option: %s", optarg); |
| 587 | exit(1); |
| 588 | } |
| 589 | break; |
| 590 | case 't': |
| 591 | if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { |
| 592 | error_report("Invalid cache option: %s", optarg); |
| 593 | exit(1); |
| 594 | } |
| 595 | break; |
| 596 | case 'T': |
| 597 | trace_opt_parse(optarg); |
| 598 | break; |
| 599 | case 'V': |
| 600 | printf("%s version " QEMU_FULL_VERSION "\n" |
| 601 | QEMU_COPYRIGHT "\n", g_get_prgname()); |
| 602 | exit(0); |
| 603 | case 'h': |
| 604 | usage(g_get_prgname()); |
| 605 | exit(0); |
| 606 | case 'U': |
| 607 | force_share = true; |
| 608 | break; |
| 609 | case OPTION_OBJECT: |
| 610 | user_creatable_process_cmdline(optarg); |
| 611 | break; |
| 612 | case OPTION_IMAGE_OPTS: |
| 613 | imageOpts = true; |
| 614 | break; |
| 615 | default: |
| 616 | usage(g_get_prgname()); |
| 617 | exit(1); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | if ((argc - optind) > 1) { |
| 622 | usage(g_get_prgname()); |
| 623 | exit(1); |
| 624 | } |
| 625 | |
| 626 | if (format && imageOpts) { |
| 627 | error_report("--image-opts and -f are mutually exclusive"); |
| 628 | exit(1); |
| 629 | } |
| 630 | |
| 631 | qemu_init_main_loop(&error_fatal); |
| 632 | |
| 633 | if (!trace_init_backends()) { |
| 634 | exit(1); |
| 635 | } |
| 636 | trace_init_file(); |
| 637 | qemu_set_log(LOG_TRACE, &error_fatal); |
| 638 | |
| 639 | /* initialize commands */ |
| 640 | qemuio_add_command(&quit_cmd); |
| 641 | qemuio_add_command(&open_cmd); |
| 642 | qemuio_add_command(&close_cmd); |
| 643 | |
| 644 | if (isatty(STDIN_FILENO)) { |
| 645 | ttyEOF = get_eof_char(); |
| 646 | readline_state = readline_init(readline_printf_func, |
| 647 | readline_flush_func, |
| 648 | NULL, |
| 649 | readline_completion_func); |
| 650 | qemu_set_tty_echo(STDIN_FILENO, false); |
| 651 | atexit(reenable_tty_echo); |
| 652 | } |
| 653 | |
| 654 | /* open the device */ |
| 655 | if (!readonly) { |
| 656 | flags |= BDRV_O_RDWR; |
| 657 | } |
| 658 | |
| 659 | if ((argc - optind) == 1) { |
| 660 | if (imageOpts) { |
| 661 | QemuOpts *qopts = NULL; |
| 662 | qopts = qemu_opts_parse_noisily(&file_opts, argv[optind], false); |
| 663 | if (!qopts) { |
| 664 | exit(1); |
| 665 | } |
| 666 | opts = qemu_opts_to_qdict(qopts, NULL); |
| 667 | if (openfile(NULL, flags, writethrough, force_share, opts)) { |
| 668 | exit(1); |
| 669 | } |
| 670 | } else { |
| 671 | if (format) { |
| 672 | opts = qdict_new(); |
| 673 | qdict_put_str(opts, "driver", format); |
| 674 | } |
| 675 | if (openfile(argv[optind], flags, writethrough, |
| 676 | force_share, opts)) { |
| 677 | exit(1); |
| 678 | } |
| 679 | } |
| 680 | } |
| 681 | ret = command_loop(); |
| 682 | |
| 683 | /* |
| 684 | * Make sure all outstanding requests complete before the program exits. |
| 685 | */ |
| 686 | bdrv_drain_all(); |
| 687 | |
| 688 | blk_unref(qemuio_blk); |
| 689 | g_free(readline_state); |
| 690 | |
| 691 | if (ret < 0) { |
| 692 | return 1; |
| 693 | } else { |
| 694 | return 0; |
| 695 | } |
| 696 | } |