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.
11 #include "qemu/osdep.h"
13 #include "sysemu/block-backend.h"
14 #include "block/block.h"
15 #include "block/block_int.h" /* for info_f() */
16 #include "block/qapi.h"
17 #include "qemu/error-report.h"
18 #include "qemu/main-loop.h"
19 #include "qemu/timer.h"
20 #include "sysemu/block-backend.h"
22 #define CMD_NOFILE_OK 0x01
26 static cmdinfo_t *cmdtab;
29 static int compare_cmdname(const void *a, const void *b)
31 return strcmp(((const cmdinfo_t *)a)->name,
32 ((const cmdinfo_t *)b)->name);
35 void qemuio_add_command(const cmdinfo_t *ci)
37 cmdtab = g_renew(cmdinfo_t, cmdtab, ++ncmds);
38 cmdtab[ncmds - 1] = *ci;
39 qsort(cmdtab, ncmds, sizeof(*cmdtab), compare_cmdname);
42 int qemuio_command_usage(const cmdinfo_t *ci)
44 printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline);
48 static int init_check_command(BlockBackend *blk, const cmdinfo_t *ct)
50 if (ct->flags & CMD_FLAG_GLOBAL) {
53 if (!(ct->flags & CMD_NOFILE_OK) && !blk) {
54 fprintf(stderr, "no file open, try 'help open'\n");
60 static int command(BlockBackend *blk, const cmdinfo_t *ct, int argc,
65 if (!init_check_command(blk, ct)) {
69 if (argc - 1 < ct->argmin || (ct->argmax != -1 && argc - 1 > ct->argmax)) {
70 if (ct->argmax == -1) {
72 "bad argument count %d to %s, expected at least %d arguments\n",
73 argc-1, cmd, ct->argmin);
74 } else if (ct->argmin == ct->argmax) {
76 "bad argument count %d to %s, expected %d arguments\n",
77 argc-1, cmd, ct->argmin);
80 "bad argument count %d to %s, expected between %d and %d arguments\n",
81 argc-1, cmd, ct->argmin, ct->argmax);
86 return ct->cfunc(blk, argc, argv);
89 static const cmdinfo_t *find_command(const char *cmd)
93 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
94 if (strcmp(ct->name, cmd) == 0 ||
95 (ct->altname && strcmp(ct->altname, cmd) == 0))
97 return (const cmdinfo_t *)ct;
103 /* Invoke fn() for commands with a matching prefix */
104 void qemuio_complete_command(const char *input,
105 void (*fn)(const char *cmd, void *opaque),
109 size_t input_len = strlen(input);
111 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
112 if (strncmp(input, ct->name, input_len) == 0) {
113 fn(ct->name, opaque);
118 static char **breakline(char *input, int *count)
122 char **rval = g_new0(char *, 1);
124 while (rval && (p = qemu_strsep(&input, " ")) != NULL) {
129 rval = g_renew(char *, rval, (c + 1));
137 static int64_t cvtnum(const char *s)
142 ret = qemu_strtosz_suffix(s, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
144 /* Detritus at the end of the string */
150 static void print_cvtnum_err(int64_t rc, const char *arg)
154 printf("Parsing error: non-numeric argument,"
155 " or extraneous/unrecognized suffix -- %s\n", arg);
158 printf("Parsing error: argument too large -- %s\n", arg);
161 printf("Parsing error: %s\n", arg);
165 #define EXABYTES(x) ((long long)(x) << 60)
166 #define PETABYTES(x) ((long long)(x) << 50)
167 #define TERABYTES(x) ((long long)(x) << 40)
168 #define GIGABYTES(x) ((long long)(x) << 30)
169 #define MEGABYTES(x) ((long long)(x) << 20)
170 #define KILOBYTES(x) ((long long)(x) << 10)
172 #define TO_EXABYTES(x) ((x) / EXABYTES(1))
173 #define TO_PETABYTES(x) ((x) / PETABYTES(1))
174 #define TO_TERABYTES(x) ((x) / TERABYTES(1))
175 #define TO_GIGABYTES(x) ((x) / GIGABYTES(1))
176 #define TO_MEGABYTES(x) ((x) / MEGABYTES(1))
177 #define TO_KILOBYTES(x) ((x) / KILOBYTES(1))
179 static void cvtstr(double value, char *str, size_t size)
184 if (value >= EXABYTES(1)) {
186 snprintf(str, size - 4, "%.3f", TO_EXABYTES(value));
187 } else if (value >= PETABYTES(1)) {
189 snprintf(str, size - 4, "%.3f", TO_PETABYTES(value));
190 } else if (value >= TERABYTES(1)) {
192 snprintf(str, size - 4, "%.3f", TO_TERABYTES(value));
193 } else if (value >= GIGABYTES(1)) {
195 snprintf(str, size - 4, "%.3f", TO_GIGABYTES(value));
196 } else if (value >= MEGABYTES(1)) {
198 snprintf(str, size - 4, "%.3f", TO_MEGABYTES(value));
199 } else if (value >= KILOBYTES(1)) {
201 snprintf(str, size - 4, "%.3f", TO_KILOBYTES(value));
204 snprintf(str, size - 6, "%f", value);
207 trim = strstr(str, ".000");
209 strcpy(trim, suffix);
217 static struct timeval tsub(struct timeval t1, struct timeval t2)
219 t1.tv_usec -= t2.tv_usec;
220 if (t1.tv_usec < 0) {
221 t1.tv_usec += 1000000;
224 t1.tv_sec -= t2.tv_sec;
228 static double tdiv(double value, struct timeval tv)
230 return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0));
233 #define HOURS(sec) ((sec) / (60 * 60))
234 #define MINUTES(sec) (((sec) % (60 * 60)) / 60)
235 #define SECONDS(sec) ((sec) % 60)
239 TERSE_FIXED_TIME = 0x1,
240 VERBOSE_FIXED_TIME = 0x2,
243 static void timestr(struct timeval *tv, char *ts, size_t size, int format)
245 double usec = (double)tv->tv_usec / 1000000.0;
247 if (format & TERSE_FIXED_TIME) {
248 if (!HOURS(tv->tv_sec)) {
249 snprintf(ts, size, "%u:%02u.%02u",
250 (unsigned int) MINUTES(tv->tv_sec),
251 (unsigned int) SECONDS(tv->tv_sec),
252 (unsigned int) (usec * 100));
255 format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */
258 if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) {
259 snprintf(ts, size, "%u:%02u:%02u.%02u",
260 (unsigned int) HOURS(tv->tv_sec),
261 (unsigned int) MINUTES(tv->tv_sec),
262 (unsigned int) SECONDS(tv->tv_sec),
263 (unsigned int) (usec * 100));
265 snprintf(ts, size, "0.%04u sec", (unsigned int) (usec * 10000));
270 * Parse the pattern argument to various sub-commands.
272 * Because the pattern is used as an argument to memset it must evaluate
273 * to an unsigned integer that fits into a single byte.
275 static int parse_pattern(const char *arg)
280 pattern = strtol(arg, &endptr, 0);
281 if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') {
282 printf("%s is not a valid pattern byte\n", arg);
290 * Memory allocation helpers.
292 * Make sure memory is aligned by default, or purposefully misaligned if
293 * that is specified on the command line.
296 #define MISALIGN_OFFSET 16
297 static void *qemu_io_alloc(BlockBackend *blk, size_t len, int pattern)
301 if (qemuio_misalign) {
302 len += MISALIGN_OFFSET;
304 buf = blk_blockalign(blk, len);
305 memset(buf, pattern, len);
306 if (qemuio_misalign) {
307 buf += MISALIGN_OFFSET;
312 static void qemu_io_free(void *p)
314 if (qemuio_misalign) {
315 p -= MISALIGN_OFFSET;
320 static void dump_buffer(const void *buffer, int64_t offset, int64_t len)
326 for (i = 0, p = buffer; i < len; i += 16) {
327 const uint8_t *s = p;
329 printf("%08" PRIx64 ": ", offset + i);
330 for (j = 0; j < 16 && i + j < len; j++, p++) {
334 for (j = 0; j < 16 && i + j < len; j++, s++) {
345 static void print_report(const char *op, struct timeval *t, int64_t offset,
346 int64_t count, int64_t total, int cnt, int Cflag)
348 char s1[64], s2[64], ts[64];
350 timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
352 cvtstr((double)total, s1, sizeof(s1));
353 cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
354 printf("%s %"PRId64"/%"PRId64" bytes at offset %" PRId64 "\n",
355 op, total, count, offset);
356 printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
357 s1, cnt, ts, s2, tdiv((double)cnt, *t));
358 } else {/* bytes,ops,time,bytes/sec,ops/sec */
359 printf("%"PRId64",%d,%s,%.3f,%.3f\n",
361 tdiv((double)total, *t),
362 tdiv((double)cnt, *t));
367 * Parse multiple length statements for vectored I/O, and construct an I/O
368 * vector matching it.
371 create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov,
374 size_t *sizes = g_new0(size_t, nr_iov);
380 for (i = 0; i < nr_iov; i++) {
386 print_cvtnum_err(len, arg);
390 /* should be SIZE_T_MAX, but that doesn't exist */
392 printf("Argument '%s' exceeds maximum size %d\n", arg, INT_MAX);
397 printf("length argument %" PRId64
398 " is not sector aligned\n", len);
406 qemu_iovec_init(qiov, nr_iov);
408 buf = p = qemu_io_alloc(blk, count, pattern);
410 for (i = 0; i < nr_iov; i++) {
411 qemu_iovec_add(qiov, p, sizes[i]);
420 static int do_read(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
425 if (count >> 9 > INT_MAX) {
429 ret = blk_read(blk, offset >> 9, (uint8_t *)buf, count >> 9);
437 static int do_write(BlockBackend *blk, char *buf, int64_t offset, int64_t count,
442 if (count >> 9 > INT_MAX) {
446 ret = blk_write(blk, offset >> 9, (uint8_t *)buf, count >> 9);
454 static int do_pread(BlockBackend *blk, char *buf, int64_t offset,
455 int64_t count, int64_t *total)
457 if (count > INT_MAX) {
461 *total = blk_pread(blk, offset, (uint8_t *)buf, count);
468 static int do_pwrite(BlockBackend *blk, char *buf, int64_t offset,
469 int64_t count, int64_t *total)
471 if (count > INT_MAX) {
475 *total = blk_pwrite(blk, offset, (uint8_t *)buf, count);
491 static void coroutine_fn co_write_zeroes_entry(void *opaque)
493 CoWriteZeroes *data = opaque;
495 data->ret = blk_co_write_zeroes(data->blk, data->offset / BDRV_SECTOR_SIZE,
496 data->count / BDRV_SECTOR_SIZE, 0);
499 *data->total = data->ret;
503 *data->total = data->count;
506 static int do_co_write_zeroes(BlockBackend *blk, int64_t offset, int64_t count,
510 CoWriteZeroes data = {
518 if (count >> BDRV_SECTOR_BITS > INT_MAX) {
522 co = qemu_coroutine_create(co_write_zeroes_entry);
523 qemu_coroutine_enter(co, &data);
525 aio_poll(blk_get_aio_context(blk), true);
534 static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset,
535 int64_t count, int64_t *total)
539 if (count >> 9 > INT_MAX) {
543 ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9);
551 static int do_load_vmstate(BlockBackend *blk, char *buf, int64_t offset,
552 int64_t count, int64_t *total)
554 if (count > INT_MAX) {
558 *total = blk_load_vmstate(blk, (uint8_t *)buf, offset, count);
565 static int do_save_vmstate(BlockBackend *blk, char *buf, int64_t offset,
566 int64_t count, int64_t *total)
568 if (count > INT_MAX) {
572 *total = blk_save_vmstate(blk, (uint8_t *)buf, offset, count);
579 #define NOT_DONE 0x7fffffff
580 static void aio_rw_done(void *opaque, int ret)
582 *(int *)opaque = ret;
585 static int do_aio_readv(BlockBackend *blk, QEMUIOVector *qiov,
586 int64_t offset, int *total)
588 int async_ret = NOT_DONE;
590 blk_aio_readv(blk, offset >> 9, qiov, qiov->size >> 9,
591 aio_rw_done, &async_ret);
592 while (async_ret == NOT_DONE) {
593 main_loop_wait(false);
597 return async_ret < 0 ? async_ret : 1;
600 static int do_aio_writev(BlockBackend *blk, QEMUIOVector *qiov,
601 int64_t offset, int *total)
603 int async_ret = NOT_DONE;
605 blk_aio_writev(blk, offset >> 9, qiov, qiov->size >> 9,
606 aio_rw_done, &async_ret);
607 while (async_ret == NOT_DONE) {
608 main_loop_wait(false);
612 return async_ret < 0 ? async_ret : 1;
615 struct multiwrite_async_ret {
620 static void multiwrite_cb(void *opaque, int ret)
622 struct multiwrite_async_ret *async_ret = opaque;
624 async_ret->num_done++;
626 async_ret->error = ret;
630 static int do_aio_multiwrite(BlockBackend *blk, BlockRequest* reqs,
631 int num_reqs, int *total)
634 struct multiwrite_async_ret async_ret = {
640 for (i = 0; i < num_reqs; i++) {
641 reqs[i].cb = multiwrite_cb;
642 reqs[i].opaque = &async_ret;
643 *total += reqs[i].qiov->size;
646 ret = blk_aio_multiwrite(blk, reqs, num_reqs);
651 while (async_ret.num_done < num_reqs) {
652 main_loop_wait(false);
655 return async_ret.error < 0 ? async_ret.error : 1;
658 static void read_help(void)
662 " reads a range of bytes from the given offset\n"
665 " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
667 " Reads a segment of the currently open file, optionally dumping it to the\n"
668 " standard output stream (with -v option) for subsequent inspection.\n"
669 " -b, -- read from the VM state rather than the virtual disk\n"
670 " -C, -- report statistics in a machine parsable format\n"
671 " -l, -- length for pattern verification (only with -P)\n"
672 " -p, -- use blk_pread to read the file\n"
673 " -P, -- use a pattern to verify read data\n"
674 " -q, -- quiet mode, do not show I/O statistics\n"
675 " -s, -- start offset for pattern verification (only with -P)\n"
676 " -v, -- dump buffer to standard output\n"
680 static int read_f(BlockBackend *blk, int argc, char **argv);
682 static const cmdinfo_t read_cmd = {
688 .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
689 .oneline = "reads a number of bytes at a specified offset",
693 static int read_f(BlockBackend *blk, int argc, char **argv)
695 struct timeval t1, t2;
696 int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
697 int Pflag = 0, sflag = 0, lflag = 0, bflag = 0;
702 /* Some compilers get confused and warn if this is not initialized. */
705 int64_t pattern_offset = 0, pattern_count = 0;
707 while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) {
717 pattern_count = cvtnum(optarg);
718 if (pattern_count < 0) {
719 print_cvtnum_err(pattern_count, optarg);
728 pattern = parse_pattern(optarg);
738 pattern_offset = cvtnum(optarg);
739 if (pattern_offset < 0) {
740 print_cvtnum_err(pattern_offset, optarg);
748 return qemuio_command_usage(&read_cmd);
752 if (optind != argc - 2) {
753 return qemuio_command_usage(&read_cmd);
756 if (bflag && pflag) {
757 printf("-b and -p cannot be specified at the same time\n");
761 offset = cvtnum(argv[optind]);
763 print_cvtnum_err(offset, argv[optind]);
768 count = cvtnum(argv[optind]);
770 print_cvtnum_err(count, argv[optind]);
772 } else if (count > SIZE_MAX) {
773 printf("length cannot exceed %" PRIu64 ", given %s\n",
774 (uint64_t) SIZE_MAX, argv[optind]);
778 if (!Pflag && (lflag || sflag)) {
779 return qemuio_command_usage(&read_cmd);
783 pattern_count = count - pattern_offset;
786 if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
787 printf("pattern verification range exceeds end of read data\n");
792 if (offset & 0x1ff) {
793 printf("offset %" PRId64 " is not sector aligned\n",
798 printf("count %"PRId64" is not sector aligned\n",
804 buf = qemu_io_alloc(blk, count, 0xab);
806 gettimeofday(&t1, NULL);
808 cnt = do_pread(blk, buf, offset, count, &total);
810 cnt = do_load_vmstate(blk, buf, offset, count, &total);
812 cnt = do_read(blk, buf, offset, count, &total);
814 gettimeofday(&t2, NULL);
817 printf("read failed: %s\n", strerror(-cnt));
822 void *cmp_buf = g_malloc(pattern_count);
823 memset(cmp_buf, pattern, pattern_count);
824 if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
825 printf("Pattern verification failed at offset %"
826 PRId64 ", %"PRId64" bytes\n",
827 offset + pattern_offset, pattern_count);
837 dump_buffer(buf, offset, count);
840 /* Finally, report back -- -C gives a parsable format */
842 print_report("read", &t2, offset, count, total, cnt, Cflag);
850 static void readv_help(void)
854 " reads a range of bytes from the given offset into multiple buffers\n"
857 " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
859 " Reads a segment of the currently open file, optionally dumping it to the\n"
860 " standard output stream (with -v option) for subsequent inspection.\n"
861 " Uses multiple iovec buffers if more than one byte range is specified.\n"
862 " -C, -- report statistics in a machine parsable format\n"
863 " -P, -- use a pattern to verify read data\n"
864 " -v, -- dump buffer to standard output\n"
865 " -q, -- quiet mode, do not show I/O statistics\n"
869 static int readv_f(BlockBackend *blk, int argc, char **argv);
871 static const cmdinfo_t readv_cmd = {
876 .args = "[-Cqv] [-P pattern ] off len [len..]",
877 .oneline = "reads a number of bytes at a specified offset",
881 static int readv_f(BlockBackend *blk, int argc, char **argv)
883 struct timeval t1, t2;
884 int Cflag = 0, qflag = 0, vflag = 0;
888 /* Some compilers get confused and warn if this is not initialized. */
895 while ((c = getopt(argc, argv, "CP:qv")) != -1) {
902 pattern = parse_pattern(optarg);
914 return qemuio_command_usage(&readv_cmd);
918 if (optind > argc - 2) {
919 return qemuio_command_usage(&readv_cmd);
923 offset = cvtnum(argv[optind]);
925 print_cvtnum_err(offset, argv[optind]);
930 if (offset & 0x1ff) {
931 printf("offset %" PRId64 " is not sector aligned\n",
936 nr_iov = argc - optind;
937 buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, 0xab);
942 gettimeofday(&t1, NULL);
943 cnt = do_aio_readv(blk, &qiov, offset, &total);
944 gettimeofday(&t2, NULL);
947 printf("readv failed: %s\n", strerror(-cnt));
952 void *cmp_buf = g_malloc(qiov.size);
953 memset(cmp_buf, pattern, qiov.size);
954 if (memcmp(buf, cmp_buf, qiov.size)) {
955 printf("Pattern verification failed at offset %"
956 PRId64 ", %zd bytes\n", offset, qiov.size);
966 dump_buffer(buf, offset, qiov.size);
969 /* Finally, report back -- -C gives a parsable format */
971 print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
974 qemu_iovec_destroy(&qiov);
979 static void write_help(void)
983 " writes a range of bytes from the given offset\n"
986 " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
988 " Writes into a segment of the currently open file, using a buffer\n"
989 " filled with a set pattern (0xcdcdcdcd).\n"
990 " -b, -- write to the VM state rather than the virtual disk\n"
991 " -c, -- write compressed data with blk_write_compressed\n"
992 " -p, -- use blk_pwrite to write the file\n"
993 " -P, -- use different pattern to fill file\n"
994 " -C, -- report statistics in a machine parsable format\n"
995 " -q, -- quiet mode, do not show I/O statistics\n"
996 " -z, -- write zeroes using blk_co_write_zeroes\n"
1000 static int write_f(BlockBackend *blk, int argc, char **argv);
1002 static const cmdinfo_t write_cmd = {
1008 .args = "[-bcCpqz] [-P pattern ] off len",
1009 .oneline = "writes a number of bytes at a specified offset",
1013 static int write_f(BlockBackend *blk, int argc, char **argv)
1015 struct timeval t1, t2;
1016 int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0;
1022 /* Some compilers get confused and warn if this is not initialized. */
1026 while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) {
1042 pattern = parse_pattern(optarg);
1054 return qemuio_command_usage(&write_cmd);
1058 if (optind != argc - 2) {
1059 return qemuio_command_usage(&write_cmd);
1062 if (bflag + pflag + zflag > 1) {
1063 printf("-b, -p, or -z cannot be specified at the same time\n");
1067 if (zflag && Pflag) {
1068 printf("-z and -P cannot be specified at the same time\n");
1072 offset = cvtnum(argv[optind]);
1074 print_cvtnum_err(offset, argv[optind]);
1079 count = cvtnum(argv[optind]);
1081 print_cvtnum_err(count, argv[optind]);
1083 } else if (count > SIZE_MAX) {
1084 printf("length cannot exceed %" PRIu64 ", given %s\n",
1085 (uint64_t) SIZE_MAX, argv[optind]);
1090 if (offset & 0x1ff) {
1091 printf("offset %" PRId64 " is not sector aligned\n",
1096 if (count & 0x1ff) {
1097 printf("count %"PRId64" is not sector aligned\n",
1104 buf = qemu_io_alloc(blk, count, pattern);
1107 gettimeofday(&t1, NULL);
1109 cnt = do_pwrite(blk, buf, offset, count, &total);
1111 cnt = do_save_vmstate(blk, buf, offset, count, &total);
1113 cnt = do_co_write_zeroes(blk, offset, count, &total);
1115 cnt = do_write_compressed(blk, buf, offset, count, &total);
1117 cnt = do_write(blk, buf, offset, count, &total);
1119 gettimeofday(&t2, NULL);
1122 printf("write failed: %s\n", strerror(-cnt));
1130 /* Finally, report back -- -C gives a parsable format */
1132 print_report("wrote", &t2, offset, count, total, cnt, Cflag);
1147 " writes a range of bytes from the given offset source from multiple buffers\n"
1150 " 'writev 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
1152 " Writes into a segment of the currently open file, using a buffer\n"
1153 " filled with a set pattern (0xcdcdcdcd).\n"
1154 " -P, -- use different pattern to fill file\n"
1155 " -C, -- report statistics in a machine parsable format\n"
1156 " -q, -- quiet mode, do not show I/O statistics\n"
1160 static int writev_f(BlockBackend *blk, int argc, char **argv);
1162 static const cmdinfo_t writev_cmd = {
1167 .args = "[-Cq] [-P pattern ] off len [len..]",
1168 .oneline = "writes a number of bytes at a specified offset",
1169 .help = writev_help,
1172 static int writev_f(BlockBackend *blk, int argc, char **argv)
1174 struct timeval t1, t2;
1175 int Cflag = 0, qflag = 0;
1179 /* Some compilers get confused and warn if this is not initialized. */
1185 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1194 pattern = parse_pattern(optarg);
1200 return qemuio_command_usage(&writev_cmd);
1204 if (optind > argc - 2) {
1205 return qemuio_command_usage(&writev_cmd);
1208 offset = cvtnum(argv[optind]);
1210 print_cvtnum_err(offset, argv[optind]);
1215 if (offset & 0x1ff) {
1216 printf("offset %" PRId64 " is not sector aligned\n",
1221 nr_iov = argc - optind;
1222 buf = create_iovec(blk, &qiov, &argv[optind], nr_iov, pattern);
1227 gettimeofday(&t1, NULL);
1228 cnt = do_aio_writev(blk, &qiov, offset, &total);
1229 gettimeofday(&t2, NULL);
1232 printf("writev failed: %s\n", strerror(-cnt));
1240 /* Finally, report back -- -C gives a parsable format */
1242 print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
1244 qemu_iovec_destroy(&qiov);
1249 static void multiwrite_help(void)
1253 " writes a range of bytes from the given offset source from multiple buffers,\n"
1254 " in a batch of requests that may be merged by qemu\n"
1257 " 'multiwrite 512 1k 1k ; 4k 1k'\n"
1258 " writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
1260 " Writes into a segment of the currently open file, using a buffer\n"
1261 " filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
1262 " by one for each request contained in the multiwrite command.\n"
1263 " -P, -- use different pattern to fill file\n"
1264 " -C, -- report statistics in a machine parsable format\n"
1265 " -q, -- quiet mode, do not show I/O statistics\n"
1269 static int multiwrite_f(BlockBackend *blk, int argc, char **argv);
1271 static const cmdinfo_t multiwrite_cmd = {
1272 .name = "multiwrite",
1273 .cfunc = multiwrite_f,
1276 .args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
1277 .oneline = "issues multiple write requests at once",
1278 .help = multiwrite_help,
1281 static int multiwrite_f(BlockBackend *blk, int argc, char **argv)
1283 struct timeval t1, t2;
1284 int Cflag = 0, qflag = 0;
1287 int64_t offset, first_offset = 0;
1288 /* Some compilers get confused and warn if this is not initialized. */
1293 QEMUIOVector *qiovs;
1297 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1306 pattern = parse_pattern(optarg);
1312 return qemuio_command_usage(&writev_cmd);
1316 if (optind > argc - 2) {
1317 return qemuio_command_usage(&writev_cmd);
1321 for (i = optind; i < argc; i++) {
1322 if (!strcmp(argv[i], ";")) {
1327 reqs = g_new0(BlockRequest, nr_reqs);
1328 buf = g_new0(char *, nr_reqs);
1329 qiovs = g_new(QEMUIOVector, nr_reqs);
1331 for (i = 0; i < nr_reqs && optind < argc; i++) {
1334 /* Read the offset of the request */
1335 offset = cvtnum(argv[optind]);
1337 print_cvtnum_err(offset, argv[optind]);
1342 if (offset & 0x1ff) {
1343 printf("offset %lld is not sector aligned\n",
1349 first_offset = offset;
1352 /* Read lengths for qiov entries */
1353 for (j = optind; j < argc; j++) {
1354 if (!strcmp(argv[j], ";")) {
1359 nr_iov = j - optind;
1362 buf[i] = create_iovec(blk, &qiovs[i], &argv[optind], nr_iov, pattern);
1363 if (buf[i] == NULL) {
1367 reqs[i].qiov = &qiovs[i];
1368 reqs[i].sector = offset >> 9;
1369 reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
1376 /* If there were empty requests at the end, ignore them */
1379 gettimeofday(&t1, NULL);
1380 cnt = do_aio_multiwrite(blk, reqs, nr_reqs, &total);
1381 gettimeofday(&t2, NULL);
1384 printf("aio_multiwrite failed: %s\n", strerror(-cnt));
1392 /* Finally, report back -- -C gives a parsable format */
1394 print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
1396 for (i = 0; i < nr_reqs; i++) {
1397 qemu_io_free(buf[i]);
1398 if (reqs[i].qiov != NULL) {
1399 qemu_iovec_destroy(&qiovs[i]);
1417 BlockAcctCookie acct;
1422 static void aio_write_done(void *opaque, int ret)
1424 struct aio_ctx *ctx = opaque;
1427 gettimeofday(&t2, NULL);
1431 printf("aio_write failed: %s\n", strerror(-ret));
1432 block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct);
1436 block_acct_done(blk_get_stats(ctx->blk), &ctx->acct);
1442 /* Finally, report back -- -C gives a parsable format */
1443 t2 = tsub(t2, ctx->t1);
1444 print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
1445 ctx->qiov.size, 1, ctx->Cflag);
1447 qemu_io_free(ctx->buf);
1448 qemu_iovec_destroy(&ctx->qiov);
1452 static void aio_read_done(void *opaque, int ret)
1454 struct aio_ctx *ctx = opaque;
1457 gettimeofday(&t2, NULL);
1460 printf("readv failed: %s\n", strerror(-ret));
1461 block_acct_failed(blk_get_stats(ctx->blk), &ctx->acct);
1466 void *cmp_buf = g_malloc(ctx->qiov.size);
1468 memset(cmp_buf, ctx->pattern, ctx->qiov.size);
1469 if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
1470 printf("Pattern verification failed at offset %"
1471 PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
1476 block_acct_done(blk_get_stats(ctx->blk), &ctx->acct);
1483 dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
1486 /* Finally, report back -- -C gives a parsable format */
1487 t2 = tsub(t2, ctx->t1);
1488 print_report("read", &t2, ctx->offset, ctx->qiov.size,
1489 ctx->qiov.size, 1, ctx->Cflag);
1491 qemu_io_free(ctx->buf);
1492 qemu_iovec_destroy(&ctx->qiov);
1496 static void aio_read_help(void)
1500 " asynchronously reads a range of bytes from the given offset\n"
1503 " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
1505 " Reads a segment of the currently open file, optionally dumping it to the\n"
1506 " standard output stream (with -v option) for subsequent inspection.\n"
1507 " The read is performed asynchronously and the aio_flush command must be\n"
1508 " used to ensure all outstanding aio requests have been completed.\n"
1509 " -C, -- report statistics in a machine parsable format\n"
1510 " -P, -- use a pattern to verify read data\n"
1511 " -v, -- dump buffer to standard output\n"
1512 " -q, -- quiet mode, do not show I/O statistics\n"
1516 static int aio_read_f(BlockBackend *blk, int argc, char **argv);
1518 static const cmdinfo_t aio_read_cmd = {
1520 .cfunc = aio_read_f,
1523 .args = "[-Cqv] [-P pattern ] off len [len..]",
1524 .oneline = "asynchronously reads a number of bytes",
1525 .help = aio_read_help,
1528 static int aio_read_f(BlockBackend *blk, int argc, char **argv)
1531 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1534 while ((c = getopt(argc, argv, "CP:qv")) != -1) {
1541 ctx->pattern = parse_pattern(optarg);
1542 if (ctx->pattern < 0) {
1555 return qemuio_command_usage(&aio_read_cmd);
1559 if (optind > argc - 2) {
1561 return qemuio_command_usage(&aio_read_cmd);
1564 ctx->offset = cvtnum(argv[optind]);
1565 if (ctx->offset < 0) {
1566 print_cvtnum_err(ctx->offset, argv[optind]);
1572 if (ctx->offset & 0x1ff) {
1573 printf("offset %" PRId64 " is not sector aligned\n",
1575 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
1580 nr_iov = argc - optind;
1581 ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, 0xab);
1582 if (ctx->buf == NULL) {
1583 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
1588 gettimeofday(&ctx->t1, NULL);
1589 block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size,
1591 blk_aio_readv(blk, ctx->offset >> 9, &ctx->qiov,
1592 ctx->qiov.size >> 9, aio_read_done, ctx);
1596 static void aio_write_help(void)
1600 " asynchronously writes a range of bytes from the given offset source\n"
1601 " from multiple buffers\n"
1604 " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
1606 " Writes into a segment of the currently open file, using a buffer\n"
1607 " filled with a set pattern (0xcdcdcdcd).\n"
1608 " The write is performed asynchronously and the aio_flush command must be\n"
1609 " used to ensure all outstanding aio requests have been completed.\n"
1610 " -P, -- use different pattern to fill file\n"
1611 " -C, -- report statistics in a machine parsable format\n"
1612 " -q, -- quiet mode, do not show I/O statistics\n"
1616 static int aio_write_f(BlockBackend *blk, int argc, char **argv);
1618 static const cmdinfo_t aio_write_cmd = {
1619 .name = "aio_write",
1620 .cfunc = aio_write_f,
1623 .args = "[-Cq] [-P pattern ] off len [len..]",
1624 .oneline = "asynchronously writes a number of bytes",
1625 .help = aio_write_help,
1628 static int aio_write_f(BlockBackend *blk, int argc, char **argv)
1632 struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
1635 while ((c = getopt(argc, argv, "CqP:")) != -1) {
1644 pattern = parse_pattern(optarg);
1652 return qemuio_command_usage(&aio_write_cmd);
1656 if (optind > argc - 2) {
1658 return qemuio_command_usage(&aio_write_cmd);
1661 ctx->offset = cvtnum(argv[optind]);
1662 if (ctx->offset < 0) {
1663 print_cvtnum_err(ctx->offset, argv[optind]);
1669 if (ctx->offset & 0x1ff) {
1670 printf("offset %" PRId64 " is not sector aligned\n",
1672 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
1677 nr_iov = argc - optind;
1678 ctx->buf = create_iovec(blk, &ctx->qiov, &argv[optind], nr_iov, pattern);
1679 if (ctx->buf == NULL) {
1680 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
1685 gettimeofday(&ctx->t1, NULL);
1686 block_acct_start(blk_get_stats(blk), &ctx->acct, ctx->qiov.size,
1688 blk_aio_writev(blk, ctx->offset >> 9, &ctx->qiov,
1689 ctx->qiov.size >> 9, aio_write_done, ctx);
1693 static int aio_flush_f(BlockBackend *blk, int argc, char **argv)
1695 BlockAcctCookie cookie;
1696 block_acct_start(blk_get_stats(blk), &cookie, 0, BLOCK_ACCT_FLUSH);
1698 block_acct_done(blk_get_stats(blk), &cookie);
1702 static const cmdinfo_t aio_flush_cmd = {
1703 .name = "aio_flush",
1704 .cfunc = aio_flush_f,
1705 .oneline = "completes all outstanding aio requests"
1708 static int flush_f(BlockBackend *blk, int argc, char **argv)
1714 static const cmdinfo_t flush_cmd = {
1718 .oneline = "flush all in-core file state to disk",
1721 static int truncate_f(BlockBackend *blk, int argc, char **argv)
1726 offset = cvtnum(argv[1]);
1728 print_cvtnum_err(offset, argv[1]);
1732 ret = blk_truncate(blk, offset);
1734 printf("truncate: %s\n", strerror(-ret));
1741 static const cmdinfo_t truncate_cmd = {
1744 .cfunc = truncate_f,
1748 .oneline = "truncates the current file at the given offset",
1751 static int length_f(BlockBackend *blk, int argc, char **argv)
1756 size = blk_getlength(blk);
1758 printf("getlength: %s\n", strerror(-size));
1762 cvtstr(size, s1, sizeof(s1));
1768 static const cmdinfo_t length_cmd = {
1772 .oneline = "gets the length of the current file",
1776 static int info_f(BlockBackend *blk, int argc, char **argv)
1778 BlockDriverState *bs = blk_bs(blk);
1779 BlockDriverInfo bdi;
1780 ImageInfoSpecific *spec_info;
1781 char s1[64], s2[64];
1784 if (bs->drv && bs->drv->format_name) {
1785 printf("format name: %s\n", bs->drv->format_name);
1787 if (bs->drv && bs->drv->protocol_name) {
1788 printf("format name: %s\n", bs->drv->protocol_name);
1791 ret = bdrv_get_info(bs, &bdi);
1796 cvtstr(bdi.cluster_size, s1, sizeof(s1));
1797 cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
1799 printf("cluster size: %s\n", s1);
1800 printf("vm state offset: %s\n", s2);
1802 spec_info = bdrv_get_specific_info(bs);
1804 printf("Format specific information:\n");
1805 bdrv_image_info_specific_dump(fprintf, stdout, spec_info);
1806 qapi_free_ImageInfoSpecific(spec_info);
1814 static const cmdinfo_t info_cmd = {
1818 .oneline = "prints information about the current file",
1821 static void discard_help(void)
1825 " discards a range of bytes from the given offset\n"
1828 " 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
1830 " Discards a segment of the currently open file.\n"
1831 " -C, -- report statistics in a machine parsable format\n"
1832 " -q, -- quiet mode, do not show I/O statistics\n"
1836 static int discard_f(BlockBackend *blk, int argc, char **argv);
1838 static const cmdinfo_t discard_cmd = {
1844 .args = "[-Cq] off len",
1845 .oneline = "discards a number of bytes at a specified offset",
1846 .help = discard_help,
1849 static int discard_f(BlockBackend *blk, int argc, char **argv)
1851 struct timeval t1, t2;
1852 int Cflag = 0, qflag = 0;
1854 int64_t offset, count;
1856 while ((c = getopt(argc, argv, "Cq")) != -1) {
1865 return qemuio_command_usage(&discard_cmd);
1869 if (optind != argc - 2) {
1870 return qemuio_command_usage(&discard_cmd);
1873 offset = cvtnum(argv[optind]);
1875 print_cvtnum_err(offset, argv[optind]);
1880 count = cvtnum(argv[optind]);
1882 print_cvtnum_err(count, argv[optind]);
1884 } else if (count >> BDRV_SECTOR_BITS > INT_MAX) {
1885 printf("length cannot exceed %"PRIu64", given %s\n",
1886 (uint64_t)INT_MAX << BDRV_SECTOR_BITS,
1891 gettimeofday(&t1, NULL);
1892 ret = blk_discard(blk, offset >> BDRV_SECTOR_BITS,
1893 count >> BDRV_SECTOR_BITS);
1894 gettimeofday(&t2, NULL);
1897 printf("discard failed: %s\n", strerror(-ret));
1901 /* Finally, report back -- -C gives a parsable format */
1904 print_report("discard", &t2, offset, count, count, 1, Cflag);
1911 static int alloc_f(BlockBackend *blk, int argc, char **argv)
1913 BlockDriverState *bs = blk_bs(blk);
1914 int64_t offset, sector_num, nb_sectors, remaining;
1919 offset = cvtnum(argv[1]);
1921 print_cvtnum_err(offset, argv[1]);
1923 } else if (offset & 0x1ff) {
1924 printf("offset %" PRId64 " is not sector aligned\n",
1930 nb_sectors = cvtnum(argv[2]);
1931 if (nb_sectors < 0) {
1932 print_cvtnum_err(nb_sectors, argv[2]);
1934 } else if (nb_sectors > INT_MAX) {
1935 printf("length argument cannot exceed %d, given %s\n",
1943 remaining = nb_sectors;
1945 sector_num = offset >> 9;
1947 ret = bdrv_is_allocated(bs, sector_num, remaining, &num);
1949 printf("is_allocated failed: %s\n", strerror(-ret));
1958 nb_sectors -= remaining;
1963 cvtstr(offset, s1, sizeof(s1));
1965 printf("%"PRId64"/%"PRId64" sectors allocated at offset %s\n",
1966 sum_alloc, nb_sectors, s1);
1970 static const cmdinfo_t alloc_cmd = {
1976 .args = "off [sectors]",
1977 .oneline = "checks if a sector is present in the file",
1981 static int map_is_allocated(BlockDriverState *bs, int64_t sector_num,
1982 int64_t nb_sectors, int64_t *pnum)
1984 int num, num_checked;
1987 num_checked = MIN(nb_sectors, INT_MAX);
1988 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
1996 while (nb_sectors > 0 && ret == firstret) {
2000 num_checked = MIN(nb_sectors, INT_MAX);
2001 ret = bdrv_is_allocated(bs, sector_num, num_checked, &num);
2002 if (ret == firstret && num) {
2012 static int map_f(BlockBackend *blk, int argc, char **argv)
2015 int64_t nb_sectors, total_sectors;
2022 total_sectors = blk_nb_sectors(blk);
2023 if (total_sectors < 0) {
2024 error_report("Failed to query image length: %s",
2025 strerror(-total_sectors));
2029 nb_sectors = total_sectors;
2032 ret = map_is_allocated(blk_bs(blk), offset, nb_sectors, &num);
2034 error_report("Failed to get allocation status: %s", strerror(-ret));
2037 error_report("Unexpected end of image");
2041 retstr = ret ? " allocated" : "not allocated";
2042 cvtstr(offset << 9ULL, s1, sizeof(s1));
2043 printf("[% 24" PRId64 "] % 8" PRId64 "/% 8" PRId64 " sectors %s "
2044 "at offset %s (%d)\n",
2045 offset << 9ULL, num, nb_sectors, retstr, s1, ret);
2049 } while (offset < total_sectors);
2054 static const cmdinfo_t map_cmd = {
2060 .oneline = "prints the allocated areas of a file",
2063 static void reopen_help(void)
2067 " Changes the open options of an already opened image\n"
2070 " 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n"
2072 " -r, -- Reopen the image read-only\n"
2073 " -c, -- Change the cache mode to the given value\n"
2074 " -o, -- Changes block driver options (cf. 'open' command)\n"
2078 static int reopen_f(BlockBackend *blk, int argc, char **argv);
2080 static QemuOptsList reopen_opts = {
2082 .merge_lists = true,
2083 .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head),
2085 /* no elements => accept any params */
2086 { /* end of list */ }
2090 static const cmdinfo_t reopen_cmd = {
2095 .args = "[-r] [-c cache] [-o options]",
2096 .oneline = "reopens an image with new options",
2097 .help = reopen_help,
2100 static int reopen_f(BlockBackend *blk, int argc, char **argv)
2102 BlockDriverState *bs = blk_bs(blk);
2106 int flags = bs->open_flags;
2108 BlockReopenQueue *brq;
2109 Error *local_err = NULL;
2111 while ((c = getopt(argc, argv, "c:o:r")) != -1) {
2114 if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
2115 error_report("Invalid cache option: %s", optarg);
2120 if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
2121 qemu_opts_reset(&reopen_opts);
2126 flags &= ~BDRV_O_RDWR;
2129 qemu_opts_reset(&reopen_opts);
2130 return qemuio_command_usage(&reopen_cmd);
2134 if (optind != argc) {
2135 qemu_opts_reset(&reopen_opts);
2136 return qemuio_command_usage(&reopen_cmd);
2139 qopts = qemu_opts_find(&reopen_opts, NULL);
2140 opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
2141 qemu_opts_reset(&reopen_opts);
2143 brq = bdrv_reopen_queue(NULL, bs, opts, flags);
2144 bdrv_reopen_multiple(brq, &local_err);
2146 error_report_err(local_err);
2152 static int break_f(BlockBackend *blk, int argc, char **argv)
2156 ret = bdrv_debug_breakpoint(blk_bs(blk), argv[1], argv[2]);
2158 printf("Could not set breakpoint: %s\n", strerror(-ret));
2164 static int remove_break_f(BlockBackend *blk, int argc, char **argv)
2168 ret = bdrv_debug_remove_breakpoint(blk_bs(blk), argv[1]);
2170 printf("Could not remove breakpoint %s: %s\n", argv[1], strerror(-ret));
2176 static const cmdinfo_t break_cmd = {
2181 .args = "event tag",
2182 .oneline = "sets a breakpoint on event and tags the stopped "
2186 static const cmdinfo_t remove_break_cmd = {
2187 .name = "remove_break",
2190 .cfunc = remove_break_f,
2192 .oneline = "remove a breakpoint by tag",
2195 static int resume_f(BlockBackend *blk, int argc, char **argv)
2199 ret = bdrv_debug_resume(blk_bs(blk), argv[1]);
2201 printf("Could not resume request: %s\n", strerror(-ret));
2207 static const cmdinfo_t resume_cmd = {
2213 .oneline = "resumes the request tagged as tag",
2216 static int wait_break_f(BlockBackend *blk, int argc, char **argv)
2218 while (!bdrv_debug_is_suspended(blk_bs(blk), argv[1])) {
2219 aio_poll(blk_get_aio_context(blk), true);
2225 static const cmdinfo_t wait_break_cmd = {
2226 .name = "wait_break",
2229 .cfunc = wait_break_f,
2231 .oneline = "waits for the suspension of a request",
2234 static int abort_f(BlockBackend *blk, int argc, char **argv)
2239 static const cmdinfo_t abort_cmd = {
2242 .flags = CMD_NOFILE_OK,
2243 .oneline = "simulate a program crash using abort(3)",
2246 static void sigraise_help(void)
2250 " raises the given signal\n"
2253 " 'sigraise %i' - raises SIGTERM\n"
2255 " Invokes raise(signal), where \"signal\" is the mandatory integer argument\n"
2256 " given to sigraise.\n"
2260 static int sigraise_f(BlockBackend *blk, int argc, char **argv);
2262 static const cmdinfo_t sigraise_cmd = {
2264 .cfunc = sigraise_f,
2267 .flags = CMD_NOFILE_OK,
2269 .oneline = "raises a signal",
2270 .help = sigraise_help,
2273 static int sigraise_f(BlockBackend *blk, int argc, char **argv)
2275 int64_t sig = cvtnum(argv[1]);
2277 print_cvtnum_err(sig, argv[1]);
2279 } else if (sig > NSIG) {
2280 printf("signal argument '%s' is too large to be a valid signal\n",
2285 /* Using raise() to kill this process does not necessarily flush all open
2286 * streams. At least stdout and stderr (although the latter should be
2287 * non-buffered anyway) should be flushed, though. */
2295 static void sleep_cb(void *opaque)
2297 bool *expired = opaque;
2301 static int sleep_f(BlockBackend *blk, int argc, char **argv)
2305 struct QEMUTimer *timer;
2306 bool expired = false;
2308 ms = strtol(argv[1], &endptr, 0);
2309 if (ms < 0 || *endptr != '\0') {
2310 printf("%s is not a valid number\n", argv[1]);
2314 timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired);
2315 timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms);
2318 main_loop_wait(false);
2326 static const cmdinfo_t sleep_cmd = {
2331 .flags = CMD_NOFILE_OK,
2332 .oneline = "waits for the given value in milliseconds",
2335 static void help_oneline(const char *cmd, const cmdinfo_t *ct)
2340 printf("%s ", ct->name);
2342 printf("(or %s) ", ct->altname);
2347 printf("%s ", ct->args);
2349 printf("-- %s\n", ct->oneline);
2352 static void help_onecmd(const char *cmd, const cmdinfo_t *ct)
2354 help_oneline(cmd, ct);
2360 static void help_all(void)
2362 const cmdinfo_t *ct;
2364 for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
2365 help_oneline(ct->name, ct);
2367 printf("\nUse 'help commandname' for extended help.\n");
2370 static int help_f(BlockBackend *blk, int argc, char **argv)
2372 const cmdinfo_t *ct;
2379 ct = find_command(argv[1]);
2381 printf("command %s not found\n", argv[1]);
2385 help_onecmd(argv[1], ct);
2389 static const cmdinfo_t help_cmd = {
2395 .flags = CMD_FLAG_GLOBAL,
2396 .args = "[command]",
2397 .oneline = "help for one or all commands",
2400 bool qemuio_command(BlockBackend *blk, const char *cmd)
2403 const cmdinfo_t *ct;
2408 input = g_strdup(cmd);
2409 v = breakline(input, &c);
2411 ct = find_command(v[0]);
2413 done = command(blk, ct, c, v);
2415 fprintf(stderr, "command \"%s\" not found\n", v[0]);
2424 static void __attribute((constructor)) init_qemuio_commands(void)
2426 /* initialize commands */
2427 qemuio_add_command(&help_cmd);
2428 qemuio_add_command(&read_cmd);
2429 qemuio_add_command(&readv_cmd);
2430 qemuio_add_command(&write_cmd);
2431 qemuio_add_command(&writev_cmd);
2432 qemuio_add_command(&multiwrite_cmd);
2433 qemuio_add_command(&aio_read_cmd);
2434 qemuio_add_command(&aio_write_cmd);
2435 qemuio_add_command(&aio_flush_cmd);
2436 qemuio_add_command(&flush_cmd);
2437 qemuio_add_command(&truncate_cmd);
2438 qemuio_add_command(&length_cmd);
2439 qemuio_add_command(&info_cmd);
2440 qemuio_add_command(&discard_cmd);
2441 qemuio_add_command(&alloc_cmd);
2442 qemuio_add_command(&map_cmd);
2443 qemuio_add_command(&reopen_cmd);
2444 qemuio_add_command(&break_cmd);
2445 qemuio_add_command(&remove_break_cmd);
2446 qemuio_add_command(&resume_cmd);
2447 qemuio_add_command(&wait_break_cmd);
2448 qemuio_add_command(&abort_cmd);
2449 qemuio_add_command(&sleep_cmd);
2450 qemuio_add_command(&sigraise_cmd);