2 * Command line utility to exercise the QEMU I/O path.
4 * Copyright (C) 2009 Red Hat, Inc.
5 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
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.
12 #include "sysemu/block-backend.h"
13 #include "block/block.h"
14 #include "block/block_int.h" /* for info_f() */
15 #include "block/qapi.h"
16 #include "qemu/error-report.h"
17 #include "qemu/main-loop.h"
18 #include "qemu/timer.h"
19 #include "sysemu/block-backend.h"
21 #define CMD_NOFILE_OK 0x01
25 static cmdinfo_t *cmdtab;
28 static int compare_cmdname(const void *a, const void *b)
30 return strcmp(((const cmdinfo_t *)a)->name,
31 ((const cmdinfo_t *)b)->name);
34 void qemuio_add_command(const cmdinfo_t *ci)
36 cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds);
37 cmdtab[ncmds - 1] = *ci;
38 qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname);
41 int qemuio_command_usage(const cmdinfo_t *ci)
43 printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline);
47 static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct)
49 if (ct->flags & CMD_FLAG_GLOBAL) {
52 if (!(ct->flags & CMD_NOFILE_OK) && !blk) {
53 fprintf(stderr, "no file open, try 'help open'\n");
59 static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc,
64 if (!init_check_command(blk, ct)) {
68 if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) {
69 if (ct->argmax == -1) {
71 "bad argument count %d to %s, expected at least %d arguments\n",
72 argc-1, cmd, ct->argmin);
73 } else if (ct->argmin == ct->argmax) {
75 "bad argument count %d to %s, expected %d arguments\n",
76 argc-1, cmd, ct->argmin);
79 "bad argument count %d to %s, expected between %d and %d arguments\n",
80 argc-1, cmd, ct->argmin, ct->argmax);
85 return ct->cfunc(blk, argc, argv);
88 static const cmdinfo_t *find_command(const char *cmd)
92 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
93 if (strcmp(ct->name, cmd) == 0 ||
94 (ct->altname && strcmp(ct->altname, cmd) == 0))
96 return (const cmdinfo_t *)ct;
102 /* Invoke fn() for commands with a matching prefix */
103 void qemuio_complete_command(const char *input,
104 void (*fn)(const char *cmd, void *opaque),
108 size_t input_len = strlen(input);
110 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
111 if (strncmp(input, ct->name, input_len) == 0) {
112 fn(ct->name, opaque);
117 static char **breakline(char *input, int *count)
121 char **rval = g_new0(char *, 1);
123 while (rval && (p = qemu_strsep(&input, " ")) != NULL) {
128 rval = g_renew(char *, rval, (c + 1));
136 static int64_t cvtnum(const char *s)
141 ret = qemu_strtosz_suffix(s, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
143 /* Detritus at the end of the string */
149 static void print_cvtnum_err(int64_t rc, const char *arg)
153 printf("Parsing error: non-numeric argument,"
154 " or extraneous/unrecognized suffix -- %s\n", arg);
157 printf("Parsing error: argument too large -- %s\n", arg);
160 printf("Parsing error: %s\n", arg);
164 #define EXABYTES(x) ((long long)(x) << 60)
165 #define PETABYTES(x) ((long long)(x) << 50)
166 #define TERABYTES(x) ((long long)(x) << 40)
167 #define GIGABYTES(x) ((long long)(x) << 30)
168 #define MEGABYTES(x) ((long long)(x) << 20)
169 #define KILOBYTES(x) ((long long)(x) << 10)
171 #define TO_EXABYTES(x) ((x) / EXABYTES(1))
172 #define TO_PETABYTES(x) ((x) / PETABYTES(1))
173 #define TO_TERABYTES(x) ((x) / TERABYTES(1))
174 #define TO_GIGABYTES(x) ((x) / GIGABYTES(1))
175 #define TO_MEGABYTES(x) ((x) / MEGABYTES(1))
176 #define TO_KILOBYTES(x) ((x) / KILOBYTES(1))
178 static void cvtstr(double value, char *str, size_t size)
183 if (value >= EXABYTES(1)) {
185 snprintf(str, size - 4, "%.3f", TO_EXABYTES(value));
186 } else if (value >= PETABYTES(1)) {
188 snprintf(str, size - 4, "%.3f", TO_PETABYTES(value));
189 } else if (value >= TERABYTES(1)) {
191 snprintf(str, size - 4, "%.3f", TO_TERABYTES(value));
192 } else if (value >= GIGABYTES(1)) {
194 snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value));
195 } else if (value >= MEGABYTES(1)) {
197 snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value));
198 } else if (value >= KILOBYTES(1)) {
200 snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value));
203 snprintf(str, size - 6, "%f", value);
206 trim = strstr(str, ".000");
208 strcpy(trim, suffix);
216 static struct timeval tsub(struct timeval t1, struct timeval t2)
218 t1.tv_usec -= t2.tv_usec;
219 if (t1.tv_usec < 0) {
220 t1.tv_usec += 1000000;
223 t1.tv_sec -= t2.tv_sec;
227 static double tdiv(double value, struct timeval tv)
229 return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0));
232 #define HOURS(sec) ((sec) / (60 * 60))
233 #define MINUTES(sec) (((sec) % (60 * 60)) / 60)
234 #define SECONDS(sec) ((sec) % 60)
238 TERSE_FIXED_TIME = 0x1,
239 VERBOSE_FIXED_TIME = 0x2,
242 static void timestr(struct timeval *tv, char *ts, size_t size, int format)
244 double usec = (double)tv->tv_usec / 1000000.0;
246 if (format & TERSE_FIXED_TIME) {
247 if (!HOURS(tv->tv_sec)) {
248 snprintf(ts, size, "%u:%02u.%02u",
249 (unsigned int) MINUTES(tv->tv_sec),
250 (unsigned int) SECONDS(tv->tv_sec),
251 (unsigned int) (usec * 100));
254 format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */
257 if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) {
258 snprintf(ts, size, "%u:%02u:%02u.%02u",
259 (unsigned int) HOURS(tv->tv_sec),
260 (unsigned int) MINUTES(tv->tv_sec),
261 (unsigned int) SECONDS(tv->tv_sec),
262 (unsigned int) (usec * 100));
264 snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000));
269 * Parse the pattern argument to various sub-commands.
271 * Because the pattern is used as an argument to memset it must evaluate
272 * to an unsigned integer that fits into a single byte.
274 static int parse_pattern(const char *arg)
279 pattern = strtol(arg, &endptr, 0);
280 if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') {
281 printf("%s is not a valid pattern byte\n", arg);
289 * Memory allocation helpers.
291 * Make sure memory is aligned by default, or purposefully misaligned if
292 * that is specified on the command line.
295 #define MISALIGN_OFFSET 16
296 static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern)
300 if (qemuio_misalign) {
301 len += MISALIGN_OFFSET;
303 buf = blk_blockalign(blk, len);
304 memset(buf, pattern, len);
305 if (qemuio_misalign) {
306 buf += MISALIGN_OFFSET;
311 static void qemu_io_free(void *p)
313 if (qemuio_misalign) {
314 p -= MISALIGN_OFFSET;
319 static void dump_buffer(const void *buffer, int64_t offset, int64_t len)
325 for (i = 0, p = buffer; i < len; i += 16) {
326 const uint8_t *s = p;
328 printf("%08" PRIx64 ": ", offset + i);
329 for (j = 0; j < 16 && i + j < len; j++, p++) {
333 for (j = 0; j < 16 && i + j < len; j++, s++) {
344 static void print_report(const char *op, struct timeval *t, int64_t offset,
345 int64_t count, int64_t total, int cnt, int Cflag)
347 char s1[64], s2[64], ts[64];
349 timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
351 cvtstr((double)total, s1, sizeof(s1));
352 cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
353 printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n",
354 op, total, count, offset);
355 printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
356 s1, cnt, ts, s2, tdiv((double)cnt, *t));
357 } else {/* bytes,ops,time,bytes/sec,ops/sec */
358 printf("%"PRId64",%d,%s,%.3f,%.3f\n",
360 tdiv((double)total, *t),
361 tdiv((double)cnt, *t));
366 * Parse multiple length statements for vectored I/O, and construct an I/O
367 * vector matching it.
370 create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov,
373 size_t *sizes = g_new0(size_t, nr_iov);
379 for (i = 0; i < nr_iov; i++) {
385 print_cvtnum_err(len, arg);
389 /* should be SIZE_T_MAX, but that doesn't exist */
391 printf("Argument '%s' exceeds maximum size %d\n", arg, INT_MAX);
396 printf("length argument %" PRId64
397 " is not sector aligned\n", len);
405 qemu_iovec_init(qiov, nr_iov);
407 buf = p = qemu_io_alloc(blk, count, pattern);
409 for (i = 0; i < nr_iov; i++) {
410 qemu_iovec_add(qiov, p, sizes[i]);
419 static int do_read(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
424 if (count >> 9 > INT_MAX) {
428 ret = blk_read(blk, offset >> 9, (uint8_t *)buf, count >> 9);
436 static int do_write(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
441 if (count >> 9 > INT_MAX) {
445 ret = blk_write(blk, offset >> 9, (uint8_t *)buf, count >> 9);
453 static int do_pread(BlockBackend *blk, char *buf, int64_t offset,
454 int64_t count, int64_t *total)
456 if (count > INT_MAX) {
460 *total = blk_pread(blk, offset, (uint8_t *)buf, count);
467 static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset,
468 int64_t count, int64_t *total)
470 if (count > INT_MAX) {
474 *total = blk_pwrite(blk, offset, (uint8_t *)buf, count);
490 static void coroutine_fn co_write_zeroes_entry(void *opaque)
492 CoWriteZeroes *data = opaque;
494 data->ret = blk_co_write_zeroes(data->blk, data->offset / BDRV_SECTOR_SIZE,
495 data->count / BDRV_SECTOR_SIZE, 0);
498 *data->total = data->ret;
502 *data->total = data->count;
505 static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int64_t count,
509 CoWriteZeroes data = {
517 if (count >> BDRV_SECTOR_BITS > INT_MAX) {
521 co = qemu_coroutine_create(co_write_zeroes_entry);
522 qemu_coroutine_enter(co, &data);
524 aio_poll(blk_get_aio_context(blk), true);
533 static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset,
534 int64_t count, int64_t *total)
538 if (count >> 9 > INT_MAX) {
542 ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9);
550 static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset,
551 int64_t count, int64_t *total)
553 if (count > INT_MAX) {
557 *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count);
564 static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset,
565 int64_t count, int64_t *total)
567 if (count > INT_MAX) {
571 *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count);
578 #define NOT_DONE 0x7fffffff
579 static void aio_rw_done(void *opaque, int ret)
581 *(int *)opaque = ret;
584 static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov,
585 int64_t offset, int *total)
587 int async_ret = NOT_DONE;
589 blk_aio_readv(blk, offset >> 9, qiov, qiov->size >> 9,
590 aio_rw_done, &async_ret);
591 while (async_ret == NOT_DONE) {
592 main_loop_wait(false);
596 return async_ret < 0 ? async_ret : 1;
599 static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov,
600 int64_t offset, int *total)
602 int async_ret = NOT_DONE;
604 blk_aio_writev(blk, offset >> 9, qiov, qiov->size >> 9,
605 aio_rw_done, &async_ret);
606 while (async_ret == NOT_DONE) {
607 main_loop_wait(false);
611 return async_ret < 0 ? async_ret : 1;
614 struct multiwrite_async_ret {
619 static void multiwrite_cb(void *opaque, int ret)
621 struct multiwrite_async_ret *async_ret = opaque;
623 async_ret->num_done++;
625 async_ret->error = ret;
629 static int do_aio_multiwrite(BlockBackend *blk, BlockRequest* reqs,
630 int num_reqs, int *total)
633 struct multiwrite_async_ret async_ret = {
639 for (i = 0; i < num_reqs; i++) {
640 reqs[i].cb = multiwrite_cb;
641 reqs[i].opaque = &async_ret;
642 *total += reqs[i].qiov->size;
645 ret = blk_aio_multiwrite(blk, reqs, num_reqs);
650 while (async_ret.num_done < num_reqs) {
651 main_loop_wait(false);
654 return async_ret.error < 0 ? async_ret.error : 1;
657 static void read_help(void)
661 " reads a range of bytes from the given offset\n"
664 " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
666 " Reads a segment of the currently open file, optionally dumping it to the\n"
667 " standard output stream (with -v option) for subsequent inspection.\n"
668 " -b, -- read from the VM state rather than the virtual disk\n"
669 " -C, -- report statistics in a machine parsable format\n"
670 " -l, -- length for pattern verification (only with -P)\n"
671 " -p, -- use blk_pread to read the file\n"
672 " -P, -- use a pattern to verify read data\n"
673 " -q, -- quiet mode, do not show I/O statistics\n"
674 " -s, -- start offset for pattern verification (only with -P)\n"
675 " -v, -- dump buffer to standard output\n"
679 static int read_f(BlockBackend *blk, int argc, char **argv);
681 static const cmdinfo_t read_cmd = {
687 .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
688 .oneline = "reads a number of bytes at a specified offset",
692 static int read_f(BlockBackend *blk, int argc, char **argv)
694 struct timeval t1, t2;
695 int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
696 int Pflag = 0, sflag = 0, lflag = 0, bflag = 0;
701 /* Some compilers get confused and warn if this is not initialized. */
704 int64_t pattern_offset = 0, pattern_count = 0;
706 while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) {
716 pattern_count = cvtnum(optarg);
717 if (pattern_count < 0) {
718 print_cvtnum_err(pattern_count, optarg);
727 pattern = parse_pattern(optarg);
737 pattern_offset = cvtnum(optarg);
738 if (pattern_offset < 0) {
739 print_cvtnum_err(pattern_offset, optarg);
747 return qemuio_command_usage(&read_cmd);
751 if (optind != argc - 2) {
752 return qemuio_command_usage(&read_cmd);
755 if (bflag && pflag) {
756 printf("-b and -p cannot be specified at the same time\n");
760 offset = cvtnum(argv[optind]);
762 print_cvtnum_err(offset, argv[optind]);
767 count = cvtnum(argv[optind]);
769 print_cvtnum_err(count, argv[optind]);
771 } else if (count > SIZE_MAX) {
772 printf("length cannot exceed %" PRIu64 ", given %s\n",
773 (uint64_t) SIZE_MAX, argv[optind]);
777 if (!Pflag && (lflag || sflag)) {
778 return qemuio_command_usage(&read_cmd);
782 pattern_count = count - pattern_offset;
785 if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
786 printf("pattern verification range exceeds end of read data\n");
791 if (offset & 0x1ff) {
792 printf("offset %" PRId64 " is not sector aligned\n",
797 printf("count %"PRId64" is not sector aligned\n",
803 buf = qemu_io_alloc(blk, count, 0xab);
805 gettimeofday(&t1, NULL);
807 cnt = do_pread(blk, buf, offset, count, &total);
809 cnt = do_load_vmstate(blk, buf, offset, count, &total);
811 cnt = do_read(blk, buf, offset, count, &total);
813 gettimeofday(&t2, NULL);
816 printf("read failed: %s\n", strerror(-cnt));
821 void *cmp_buf = g_malloc(pattern_count);
822 memset(cmp_buf, pattern, pattern_count);
823 if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
824 printf("Pattern verification failed at offset %"
825 PRId64 ", %"PRId64" bytes\n",
826 offset + pattern_offset, pattern_count);
836 dump_buffer(buf, offset, count);
839 /* Finally, report back -- -C gives a parsable format */
841 print_report("read", &t2, offset, count, total, cnt, Cflag);
849 static void readv_help(void)
853 " reads a range of bytes from the given offset into multiple buffers\n"
856 " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
858 " Reads a segment of the currently open file, optionally dumping it to the\n"
859 " standard output stream (with -v option) for subsequent inspection.\n"
860 " Uses multiple iovec buffers if more than one byte range is specified.\n"
861 " -C, -- report statistics in a machine parsable format\n"
862 " -P, -- use a pattern to verify read data\n"
863 " -v, -- dump buffer to standard output\n"
864 " -q, -- quiet mode, do not show I/O statistics\n"
868 static int readv_f(BlockBackend *blk, int argc, char **argv);
870 static const cmdinfo_t readv_cmd = {
875 .args = "[-Cqv] [-P pattern ] off len [len..]",
876 .oneline = "reads a number of bytes at a specified offset",
880 static int readv_f(BlockBackend *blk, int argc, char **argv)
882 struct timeval t1, t2;
883 int Cflag = 0, qflag = 0, vflag = 0;
887 /* Some compilers get confused and warn if this is not initialized. */
894 while ((c = getopt(argc, argv, "CP:qv")) != -1) {
901 pattern = parse_pattern(optarg);
913 return qemuio_command_usage(&readv_cmd);
917 if (optind > argc - 2) {
918 return qemuio_command_usage(&readv_cmd);
922 offset = cvtnum(argv[optind]);
924 print_cvtnum_err(offset, argv[optind]);
929 if (offset & 0x1ff) {
930 printf("offset %" PRId64 " is not sector aligned\n",
935 nr_iov = argc - optind;
936 buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab);
941 gettimeofday(&t1, NULL);
942 cnt = do_aio_readv(blk, &qiov, offset, &total);
943 gettimeofday(&t2, NULL);
946 printf("readv failed: %s\n", strerror(-cnt));
951 void *cmp_buf = g_malloc(qiov.size);
952 memset(cmp_buf, pattern, qiov.size);
953 if (memcmp(buf, cmp_buf, qiov.size)) {
954 printf("Pattern verification failed at offset %"
955 PRId64 ", %zd bytes\n", offset, qiov.size);
965 dump_buffer(buf, offset, qiov.size);
968 /* Finally, report back -- -C gives a parsable format */
970 print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
973 qemu_iovec_destroy(&qiov);
978 static void write_help(void)
982 " writes a range of bytes from the given offset\n"
985 " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
987 " Writes into a segment of the currently open file, using a buffer\n"
988 " filled with a set pattern (0xcdcdcdcd).\n"
989 " -b, -- write to the VM state rather than the virtual disk\n"
990 " -c, -- write compressed data with blk_write_compressed\n"
991 " -p, -- use blk_pwrite to write the file\n"
992 " -P, -- use different pattern to fill file\n"
993 " -C, -- report statistics in a machine parsable format\n"
994 " -q, -- quiet mode, do not show I/O statistics\n"
995 " -z, -- write zeroes using blk_co_write_zeroes\n"
999 static int write_f(BlockBackend *blk, int argc, char **argv);
1001 static const cmdinfo_t write_cmd = {
1007 .args = "[-bcCpqz] [-P pattern ] off len",
1008 .oneline = "writes a number of bytes at a specified offset",
1012 static int write_f(BlockBackend *blk, int argc, char **argv)
1014 struct timeval t1, t2;
1015 int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
1021 /* Some compilers get confused and warn if this is not initialized. */
1025 while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) {
1041 pattern = parse_pattern(optarg);
1053 return qemuio_command_usage(&write_cmd);
1057 if (optind != argc - 2) {
1058 return qemuio_command_usage(&write_cmd);
1061 if (bflag + pflag + zflag > 1) {
1062 printf("-b, -p, or -z cannot be specified at the same time\n");
1066 if (zflag && Pflag) {
1067 printf("-z and -P cannot be specified at the same time\n");
1071 offset = cvtnum(argv[optind]);
1073 print_cvtnum_err(offset, argv[optind]);
1078 count = cvtnum(argv[optind]);
1080 print_cvtnum_err(count, argv[optind]);
1082 } else if (count > SIZE_MAX) {
1083 printf("length cannot exceed %" PRIu64 ", given %s\n",
1084 (uint64_t) SIZE_MAX, argv[optind]);
1089 if (offset & 0x1ff) {
1090 printf("offset %" PRId64 " is not sector aligned\n",
1095 if (count & 0x1ff) {
1096 printf("count %"PRId64" is not sector aligned\n",
1103 buf = qemu_io_alloc(blk, count, pattern);
1106 gettimeofday(&t1, NULL);
1108 cnt = do_pwrite(blk, buf, offset, count, &total);
1110 cnt = do_save_vmstate(blk, buf, offset, count, &total);
1112 cnt = do_co_write_zeroes(blk, offset, count, &total);
1114 cnt = do_write_compressed(blk, buf, offset, count, &total);
1116 cnt = do_write(blk, buf, offset, count, &total);
1118 gettimeofday(&t2, NULL);
1121 printf("write failed: %s\n", strerror(-cnt));
1129 /* Finally, report back -- -C gives a parsable format */
1131 print_report("wrote", &t2, offset, count, total, cnt, Cflag);
1146 " writes a range of bytes from the given offset source from multiple buffers\n"
1149 " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
1151 " Writes into a segment of the currently open file, using a buffer\n"
1152 " filled with a set pattern (0xcdcdcdcd).\n"
1153 " -P, -- use different pattern to fill file\n"
1154 " -C, -- report statistics in a machine parsable format\n"
1155 " -q, -- quiet mode, do not show I/O statistics\n"
1159 static int writev_f(BlockBackend *blk, int argc, char **argv);
1161 static const cmdinfo_t writev_cmd = {
1166 .args = "[-Cq] [-P pattern ] off len [len..]",
1167 .oneline = "writes a number of bytes at a specified offset",
1168 .help = writev_help,
1171 static int writev_f(BlockBackend *blk, int argc, char **argv)
1173 struct timeval t1, t2;
1174 int Cflag = 0, qflag = 0;
1178 /* Some compilers get confused and warn if this is not initialized. */
1184 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1193 pattern = parse_pattern(optarg);
1199 return qemuio_command_usage(&writev_cmd);
1203 if (optind > argc - 2) {
1204 return qemuio_command_usage(&writev_cmd);
1207 offset = cvtnum(argv[optind]);
1209 print_cvtnum_err(offset, argv[optind]);
1214 if (offset & 0x1ff) {
1215 printf("offset %" PRId64 " is not sector aligned\n",
1220 nr_iov = argc - optind;
1221 buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern);
1226 gettimeofday(&t1, NULL);
1227 cnt = do_aio_writev(blk, &qiov, offset, &total);
1228 gettimeofday(&t2, NULL);
1231 printf("writev failed: %s\n", strerror(-cnt));
1239 /* Finally, report back -- -C gives a parsable format */
1241 print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
1243 qemu_iovec_destroy(&qiov);
1248 static void multiwrite_help(void)
1252 " writes a range of bytes from the given offset source from multiple buffers,\n"
1253 " in a batch of requests that may be merged by qemu\n"
1256 " 'multiwrite 512 1k 1k ; 4k 1k'\n"
1257 " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
1259 " Writes into a segment of the currently open file, using a buffer\n"
1260 " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
1261 " by one for each request contained in the multiwrite command.\n"
1262 " -P, -- use different pattern to fill file\n"
1263 " -C, -- report statistics in a machine parsable format\n"
1264 " -q, -- quiet mode, do not show I/O statistics\n"
1268 static int multiwrite_f(BlockBackend *blk, int argc, char **argv);
1270 static const cmdinfo_t multiwrite_cmd = {
1271 .name = "multiwrite",
1272 .cfunc = multiwrite_f,
1275 .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
1276 .oneline = "issues multiple write requests at once",
1277 .help = multiwrite_help,
1280 static int multiwrite_f(BlockBackend *blk, int argc, char **argv)
1282 struct timeval t1, t2;
1283 int Cflag = 0, qflag = 0;
1286 int64_t offset, first_offset = 0;
1287 /* Some compilers get confused and warn if this is not initialized. */
1292 QEMUIOVector *qiovs;
1296 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1305 pattern = parse_pattern(optarg);
1311 return qemuio_command_usage(&writev_cmd);
1315 if (optind > argc - 2) {
1316 return qemuio_command_usage(&writev_cmd);
1320 for (i = optind; i < argc; i++) {
1321 if (!strcmp(argv[i], ";")) {
1326 reqs = g_new0(BlockRequest, nr_reqs);
1327 buf = g_new0(char *, nr_reqs);
1328 qiovs = g_new(QEMUIOVector, nr_reqs);
1330 for (i = 0; i < nr_reqs && optind < argc; i++) {
1333 /* Read the offset of the request */
1334 offset = cvtnum(argv[optind]);
1336 print_cvtnum_err(offset, argv[optind]);
1341 if (offset & 0x1ff) {
1342 printf("offset %lld is not sector aligned\n",
1348 first_offset = offset;
1351 /* Read lengths for qiov entries */
1352 for (j = optind; j < argc; j++) {
1353 if (!strcmp(argv[j], ";")) {
1358 nr_iov = j - optind;
1361 buf[i] = create_iovec(blk, &qiovs[i], &argv[optind], nr_iov, pattern);
1362 if (buf[i] == NULL) {
1366 reqs[i].qiov = &qiovs[i];
1367 reqs[i].sector = offset >> 9;
1368 reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
1375 /* If there were empty requests at the end, ignore them */
1378 gettimeofday(&t1, NULL);
1379 cnt = do_aio_multiwrite(blk, reqs, nr_reqs, &total);
1380 gettimeofday(&t2, NULL);
1383 printf("aio_multiwrite failed: %s\n", strerror(-cnt));
1391 /* Finally, report back -- -C gives a parsable format */
1393 print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
1395 for (i = 0; i < nr_reqs; i++) {
1396 qemu_io_free(buf[i]);
1397 if (reqs[i].qiov != NULL) {
1398 qemu_iovec_destroy(&qiovs[i]);
1416 BlockAcctCookie acct;
1421 static void aio_write_done(void *opaque, int ret)
1423 struct aio_ctx *ctx = opaque;
1426 gettimeofday(&t2, NULL);
1430 printf("aio_write failed: %s\n", strerror(-ret));
1431 block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct);
1435 block_acct_done(blk_get_stats(ctx->blk), &ctx->acct);
1441 /* Finally, report back -- -C gives a parsable format */
1442 t2 = tsub(t2, ctx->t1);
1443 print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
1444 ctx->qiov.size, 1, ctx->Cflag);
1446 qemu_io_free(ctx->buf);
1447 qemu_iovec_destroy(&ctx->qiov);
1451 static void aio_read_done(void *opaque, int ret)
1453 struct aio_ctx *ctx = opaque;
1456 gettimeofday(&t2, NULL);
1459 printf("readv failed: %s\n", strerror(-ret));
1460 block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct);
1465 void *cmp_buf = g_malloc(ctx->qiov.size);
1467 memset(cmp_buf, ctx->pattern, ctx->qiov.size);
1468 if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
1469 printf("Pattern verification failed at offset %"
1470 PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
1475 block_acct_done(blk_get_stats(ctx->blk), &ctx->acct);
1482 dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
1485 /* Finally, report back -- -C gives a parsable format */
1486 t2 = tsub(t2, ctx->t1);
1487 print_report("read", &t2, ctx->offset, ctx->qiov.size,
1488 ctx->qiov.size, 1, ctx->Cflag);
1490 qemu_io_free(ctx->buf);
1491 qemu_iovec_destroy(&ctx->qiov);
1495 static void aio_read_help(void)
1499 " asynchronously reads a range of bytes from the given offset\n"
1502 " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
1504 " Reads a segment of the currently open file, optionally dumping it to the\n"
1505 " standard output stream (with -v option) for subsequent inspection.\n"
1506 " The read is performed asynchronously and the aio_flush command must be\n"
1507 " used to ensure all outstanding aio requests have been completed.\n"
1508 " -C, -- report statistics in a machine parsable format\n"
1509 " -P, -- use a pattern to verify read data\n"
1510 " -v, -- dump buffer to standard output\n"
1511 " -q, -- quiet mode, do not show I/O statistics\n"
1515 static int aio_read_f(BlockBackend *blk, int argc, char **argv);
1517 static const cmdinfo_t aio_read_cmd = {
1519 .cfunc = aio_read_f,
1522 .args = "[-Cqv] [-P pattern ] off len [len..]",
1523 .oneline = "asynchronously reads a number of bytes",
1524 .help = aio_read_help,
1527 static int aio_read_f(BlockBackend *blk, int argc, char **argv)
1530 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1533 while ((c = getopt(argc, argv, "CP:qv")) != -1) {
1540 ctx->pattern = parse_pattern(optarg);
1541 if (ctx->pattern < 0) {
1554 return qemuio_command_usage(&aio_read_cmd);
1558 if (optind > argc - 2) {
1560 return qemuio_command_usage(&aio_read_cmd);
1563 ctx->offset = cvtnum(argv[optind]);
1564 if (ctx->offset < 0) {
1565 print_cvtnum_err(ctx->offset, argv[optind]);
1571 if (ctx->offset & 0x1ff) {
1572 printf("offset %" PRId64 " is not sector aligned\n",
1574 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
1579 nr_iov = argc - optind;
1580 ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab);
1581 if (ctx->buf == NULL) {
1582 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
1587 gettimeofday(&ctx->t1, NULL);
1588 block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size,
1590 blk_aio_readv(blk, ctx->offset >> 9, &ctx->qiov,
1591 ctx->qiov.size >> 9, aio_read_done, ctx);
1595 static void aio_write_help(void)
1599 " asynchronously writes a range of bytes from the given offset source\n"
1600 " from multiple buffers\n"
1603 " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
1605 " Writes into a segment of the currently open file, using a buffer\n"
1606 " filled with a set pattern (0xcdcdcdcd).\n"
1607 " The write is performed asynchronously and the aio_flush command must be\n"
1608 " used to ensure all outstanding aio requests have been completed.\n"
1609 " -P, -- use different pattern to fill file\n"
1610 " -C, -- report statistics in a machine parsable format\n"
1611 " -q, -- quiet mode, do not show I/O statistics\n"
1615 static int aio_write_f(BlockBackend *blk, int argc, char **argv);
1617 static const cmdinfo_t aio_write_cmd = {
1618 .name = "aio_write",
1619 .cfunc = aio_write_f,
1622 .args = "[-Cq] [-P pattern ] off len [len..]",
1623 .oneline = "asynchronously writes a number of bytes",
1624 .help = aio_write_help,
1627 static int aio_write_f(BlockBackend *blk, int argc, char **argv)
1631 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1634 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1643 pattern = parse_pattern(optarg);
1651 return qemuio_command_usage(&aio_write_cmd);
1655 if (optind > argc - 2) {
1657 return qemuio_command_usage(&aio_write_cmd);
1660 ctx->offset = cvtnum(argv[optind]);
1661 if (ctx->offset < 0) {
1662 print_cvtnum_err(ctx->offset, argv[optind]);
1668 if (ctx->offset & 0x1ff) {
1669 printf("offset %" PRId64 " is not sector aligned\n",
1671 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
1676 nr_iov = argc - optind;
1677 ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, pattern);
1678 if (ctx->buf == NULL) {
1679 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
1684 gettimeofday(&ctx->t1, NULL);
1685 block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size,
1687 blk_aio_writev(blk, ctx->offset >> 9, &ctx->qiov,
1688 ctx->qiov.size >> 9, aio_write_done, ctx);
1692 static int aio_flush_f(BlockBackend *blk, int argc, char **argv)
1694 BlockAcctCookie cookie;
1695 block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH);
1697 block_acct_done(blk_get_stats(blk), &cookie);
1701 static const cmdinfo_t aio_flush_cmd = {
1702 .name = "aio_flush",
1703 .cfunc = aio_flush_f,
1704 .oneline = "completes all outstanding aio requests"
1707 static int flush_f(BlockBackend *blk, int argc, char **argv)
1713 static const cmdinfo_t flush_cmd = {
1717 .oneline = "flush all in-core file state to disk",
1720 static int truncate_f(BlockBackend *blk, int argc, char **argv)
1725 offset = cvtnum(argv[1]);
1727 print_cvtnum_err(offset, argv[1]);
1731 ret = blk_truncate(blk, offset);
1733 printf("truncate: %s\n", strerror(-ret));
1740 static const cmdinfo_t truncate_cmd = {
1743 .cfunc = truncate_f,
1747 .oneline = "truncates the current file at the given offset",
1750 static int length_f(BlockBackend *blk, int argc, char **argv)
1755 size = blk_getlength(blk);
1757 printf("getlength: %s\n", strerror(-size));
1761 cvtstr(size, s1, sizeof(s1));
1767 static const cmdinfo_t length_cmd = {
1771 .oneline = "gets the length of the current file",
1775 static int info_f(BlockBackend *blk, int argc, char **argv)
1777 BlockDriverState *bs = blk_bs(blk);
1778 BlockDriverInfo bdi;
1779 ImageInfoSpecific *spec_info;
1780 char s1[64], s2[64];
1783 if (bs->drv && bs->drv->format_name) {
1784 printf("format name: %s\n", bs->drv->format_name);
1786 if (bs->drv && bs->drv->protocol_name) {
1787 printf("format name: %s\n", bs->drv->protocol_name);
1790 ret = bdrv_get_info(bs, &bdi);
1795 cvtstr(bdi.cluster_size, s1, sizeof(s1));
1796 cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
1798 printf("cluster size: %s\n", s1);
1799 printf("vm state offset: %s\n", s2);
1801 spec_info = bdrv_get_specific_info(bs);
1803 printf("Format specific information:\n");
1804 bdrv_image_info_specific_dump(fprintf, stdout, spec_info);
1805 qapi_free_ImageInfoSpecific(spec_info);
1813 static const cmdinfo_t info_cmd = {
1817 .oneline = "prints information about the current file",
1820 static void discard_help(void)
1824 " discards a range of bytes from the given offset\n"
1827 " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
1829 " Discards a segment of the currently open file.\n"
1830 " -C, -- report statistics in a machine parsable format\n"
1831 " -q, -- quiet mode, do not show I/O statistics\n"
1835 static int discard_f(BlockBackend *blk, int argc, char **argv);
1837 static const cmdinfo_t discard_cmd = {
1843 .args = "[-Cq] off len",
1844 .oneline = "discards a number of bytes at a specified offset",
1845 .help = discard_help,
1848 static int discard_f(BlockBackend *blk, int argc, char **argv)
1850 struct timeval t1, t2;
1851 int Cflag = 0, qflag = 0;
1853 int64_t offset, count;
1855 while ((c = getopt(argc, argv, "Cq")) != -1) {
1864 return qemuio_command_usage(&discard_cmd);
1868 if (optind != argc - 2) {
1869 return qemuio_command_usage(&discard_cmd);
1872 offset = cvtnum(argv[optind]);
1874 print_cvtnum_err(offset, argv[optind]);
1879 count = cvtnum(argv[optind]);
1881 print_cvtnum_err(count, argv[optind]);
1883 } else if (count >> BDRV_SECTOR_BITS > INT_MAX) {
1884 printf("length cannot exceed %"PRIu64", given %s\n",
1885 (uint64_t)INT_MAX << BDRV_SECTOR_BITS,
1890 gettimeofday(&t1, NULL);
1891 ret = blk_discard(blk, offset >> BDRV_SECTOR_BITS,
1892 count >> BDRV_SECTOR_BITS);
1893 gettimeofday(&t2, NULL);
1896 printf("discard failed: %s\n", strerror(-ret));
1900 /* Finally, report back -- -C gives a parsable format */
1903 print_report("discard", &t2, offset, count, count, 1, Cflag);
1910 static int alloc_f(BlockBackend *blk, int argc, char **argv)
1912 BlockDriverState *bs = blk_bs(blk);
1913 int64_t offset, sector_num, nb_sectors, remaining;
1918 offset = cvtnum(argv[1]);
1920 print_cvtnum_err(offset, argv[1]);
1922 } else if (offset & 0x1ff) {
1923 printf("offset %" PRId64 " is not sector aligned\n",
1929 nb_sectors = cvtnum(argv[2]);
1930 if (nb_sectors < 0) {
1931 print_cvtnum_err(nb_sectors, argv[2]);
1933 } else if (nb_sectors > INT_MAX) {
1934 printf("length argument cannot exceed %d, given %s\n",
1942 remaining = nb_sectors;
1944 sector_num = offset >> 9;
1946 ret = bdrv_is_allocated(bs, sector_num, remaining, &num);
1948 printf("is_allocated failed: %s\n", strerror(-ret));
1957 nb_sectors -= remaining;
1962 cvtstr(offset, s1, sizeof(s1));
1964 printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n",
1965 sum_alloc, nb_sectors, s1);
1969 static const cmdinfo_t alloc_cmd = {
1975 .args = "off [sectors]",
1976 .oneline = "checks if a sector is present in the file",
1980 static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
1981 int64_t nb_sectors, int64_t *pnum)
1983 int num, num_checked;
1986 num_checked = MIN(nb_sectors, INT_MAX);
1987 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
1995 while (nb_sectors > 0 && ret == firstret) {
1999 num_checked = MIN(nb_sectors, INT_MAX);
2000 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
2001 if (ret == firstret && num) {
2011 static int map_f(BlockBackend *blk, int argc, char **argv)
2014 int64_t nb_sectors, total_sectors;
2021 total_sectors = blk_nb_sectors(blk);
2022 if (total_sectors < 0) {
2023 error_report("Failed to query image length: %s",
2024 strerror(-total_sectors));
2028 nb_sectors = total_sectors;
2031 ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num);
2033 error_report("Failed to get allocation status: %s", strerror(-ret));
2036 error_report("Unexpected end of image");
2040 retstr = ret ? " allocated" : "not allocated";
2041 cvtstr(offset << 9ULL, s1, sizeof(s1));
2042 printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s "
2043 "at offset %s (%d)\n",
2044 offset << 9ULL, num, nb_sectors, retstr, s1, ret);
2048 } while (offset < total_sectors);
2053 static const cmdinfo_t map_cmd = {
2059 .oneline = "prints the allocated areas of a file",
2062 static void reopen_help(void)
2066 " Changes the open options of an already opened image\n"
2069 " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n"
2071 " -r, -- Reopen the image read-only\n"
2072 " -c, -- Change the cache mode to the given value\n"
2073 " -o, -- Changes block driver options (cf. 'open' command)\n"
2077 static int reopen_f(BlockBackend *blk, int argc, char **argv);
2079 static QemuOptsList reopen_opts = {
2081 .merge_lists = true,
2082 .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head),
2084 /* no elements => accept any params */
2085 { /* end of list */ }
2089 static const cmdinfo_t reopen_cmd = {
2094 .args = "[-r] [-c cache] [-o options]",
2095 .oneline = "reopens an image with new options",
2096 .help = reopen_help,
2099 static int reopen_f(BlockBackend *blk, int argc, char **argv)
2101 BlockDriverState *bs = blk_bs(blk);
2105 int flags = bs->open_flags;
2107 BlockReopenQueue *brq;
2108 Error *local_err = NULL;
2110 while ((c = getopt(argc, argv, "c:o:r")) != -1) {
2113 if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
2114 error_report("Invalid cache option: %s", optarg);
2119 if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
2120 qemu_opts_reset(&reopen_opts);
2125 flags &= ~BDRV_O_RDWR;
2128 qemu_opts_reset(&reopen_opts);
2129 return qemuio_command_usage(&reopen_cmd);
2133 if (optind != argc) {
2134 qemu_opts_reset(&reopen_opts);
2135 return qemuio_command_usage(&reopen_cmd);
2138 qopts = qemu_opts_find(&reopen_opts, NULL);
2139 opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
2140 qemu_opts_reset(&reopen_opts);
2142 brq = bdrv_reopen_queue(NULL, bs, opts, flags);
2143 bdrv_reopen_multiple(brq, &local_err);
2145 error_report_err(local_err);
2151 static int break_f(BlockBackend *blk, int argc, char **argv)
2155 ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]);
2157 printf("Could not set breakpoint: %s\n", strerror(-ret));
2163 static int remove_break_f(BlockBackend *blk, int argc, char **argv)
2167 ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]);
2169 printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret));
2175 static const cmdinfo_t break_cmd = {
2180 .args = "event tag",
2181 .oneline = "sets a breakpoint on event and tags the stopped "
2185 static const cmdinfo_t remove_break_cmd = {
2186 .name = "remove_break",
2189 .cfunc = remove_break_f,
2191 .oneline = "remove a breakpoint by tag",
2194 static int resume_f(BlockBackend *blk, int argc, char **argv)
2198 ret = bdrv_debug_resume(blk_bs(blk), argv[1]);
2200 printf("Could not resume request: %s\n", strerror(-ret));
2206 static const cmdinfo_t resume_cmd = {
2212 .oneline = "resumes the request tagged as tag",
2215 static int wait_break_f(BlockBackend *blk, int argc, char **argv)
2217 while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) {
2218 aio_poll(blk_get_aio_context(blk), true);
2224 static const cmdinfo_t wait_break_cmd = {
2225 .name = "wait_break",
2228 .cfunc = wait_break_f,
2230 .oneline = "waits for the suspension of a request",
2233 static int abort_f(BlockBackend *blk, int argc, char **argv)
2238 static const cmdinfo_t abort_cmd = {
2241 .flags = CMD_NOFILE_OK,
2242 .oneline = "simulate a program crash using abort(3)",
2245 static void sigraise_help(void)
2249 " raises the given signal\n"
2252 " 'sigraise %i' - raises SIGTERM\n"
2254 " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n"
2255 " given to sigraise.\n"
2259 static int sigraise_f(BlockBackend *blk, int argc, char **argv);
2261 static const cmdinfo_t sigraise_cmd = {
2263 .cfunc = sigraise_f,
2266 .flags = CMD_NOFILE_OK,
2268 .oneline = "raises a signal",
2269 .help = sigraise_help,
2272 static int sigraise_f(BlockBackend *blk, int argc, char **argv)
2274 int64_t sig = cvtnum(argv[1]);
2276 print_cvtnum_err(sig, argv[1]);
2278 } else if (sig > NSIG) {
2279 printf("signal argument '%s' is too large to be a valid signal\n",
2284 /* Using raise() to kill this process does not necessarily flush all open
2285 * streams. At least stdout and stderr (although the latter should be
2286 * non-buffered anyway) should be flushed, though. */
2294 static void sleep_cb(void *opaque)
2296 bool *expired = opaque;
2300 static int sleep_f(BlockBackend *blk, int argc, char **argv)
2304 struct QEMUTimer *timer;
2305 bool expired = false;
2307 ms = strtol(argv[1], &endptr, 0);
2308 if (ms < 0 || *endptr != '\0') {
2309 printf("%s is not a valid number\n", argv[1]);
2313 timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired);
2314 timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms);
2317 main_loop_wait(false);
2325 static const cmdinfo_t sleep_cmd = {
2330 .flags = CMD_NOFILE_OK,
2331 .oneline = "waits for the given value in milliseconds",
2334 static void help_oneline(const char *cmd, const cmdinfo_t *ct)
2339 printf("%s ", ct->name);
2341 printf("(or %s) ", ct->altname);
2346 printf("%s ", ct->args);
2348 printf("-- %s\n", ct->oneline);
2351 static void help_onecmd(const char *cmd, const cmdinfo_t *ct)
2353 help_oneline(cmd, ct);
2359 static void help_all(void)
2361 const cmdinfo_t *ct;
2363 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
2364 help_oneline(ct->name, ct);
2366 printf("\nUse 'help commandname' for extended help.\n");
2369 static int help_f(BlockBackend *blk, int argc, char **argv)
2371 const cmdinfo_t *ct;
2378 ct = find_command(argv[1]);
2380 printf("command %s not found\n", argv[1]);
2384 help_onecmd(argv[1], ct);
2388 static const cmdinfo_t help_cmd = {
2394 .flags = CMD_FLAG_GLOBAL,
2395 .args = "[command]",
2396 .oneline = "help for one or all commands",
2399 bool qemuio_command(BlockBackend *blk, const char *cmd)
2402 const cmdinfo_t *ct;
2407 input = g_strdup(cmd);
2408 v = breakline(input, &c);
2410 ct = find_command(v[0]);
2412 done = command(blk, ct, c, v);
2414 fprintf(stderr, "command \"%s\" not found\n", v[0]);
2423 static void __attribute((constructor)) init_qemuio_commands(void)
2425 /* initialize commands */
2426 qemuio_add_command(&help_cmd);
2427 qemuio_add_command(&read_cmd);
2428 qemuio_add_command(&readv_cmd);
2429 qemuio_add_command(&write_cmd);
2430 qemuio_add_command(&writev_cmd);
2431 qemuio_add_command(&multiwrite_cmd);
2432 qemuio_add_command(&aio_read_cmd);
2433 qemuio_add_command(&aio_write_cmd);
2434 qemuio_add_command(&aio_flush_cmd);
2435 qemuio_add_command(&flush_cmd);
2436 qemuio_add_command(&truncate_cmd);
2437 qemuio_add_command(&length_cmd);
2438 qemuio_add_command(&info_cmd);
2439 qemuio_add_command(&discard_cmd);
2440 qemuio_add_command(&alloc_cmd);
2441 qemuio_add_command(&map_cmd);
2442 qemuio_add_command(&reopen_cmd);
2443 qemuio_add_command(&break_cmd);
2444 qemuio_add_command(&remove_break_cmd);
2445 qemuio_add_command(&resume_cmd);
2446 qemuio_add_command(&wait_break_cmd);
2447 qemuio_add_command(&abort_cmd);
2448 qemuio_add_command(&sleep_cmd);
2449 qemuio_add_command(&sigraise_cmd);