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.
10 #include <sys/types.h>
15 #include "qemu-common.h"
16 #include "block_int.h"
19 #define VERSION "0.0.1"
21 #define CMD_NOFILE_OK 0x01
24 static BlockDriverState *bs;
29 * Memory allocation helpers.
31 * Make sure memory is aligned by default, or purposefully misaligned if
32 * that is specified on the command line.
35 #define MISALIGN_OFFSET 16
36 static void *qemu_io_alloc(size_t len, int pattern)
41 len += MISALIGN_OFFSET;
42 buf = qemu_memalign(512, len);
43 memset(buf, pattern, len);
45 buf += MISALIGN_OFFSET;
49 static void qemu_io_free(void *p)
57 dump_buffer(const void *buffer, int64_t offset, int len)
62 for (i = 0, p = buffer; i < len; i += 16) {
65 printf("%08llx: ", (unsigned long long)offset + i);
66 for (j = 0; j < 16 && i + j < len; j++, p++)
69 for (j = 0; j < 16 && i + j < len; j++, s++) {
80 print_report(const char *op, struct timeval *t, int64_t offset,
81 int count, int total, int cnt, int Cflag)
83 char s1[64], s2[64], ts[64];
85 timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
87 cvtstr((double)total, s1, sizeof(s1));
88 cvtstr(tdiv((double)total, *t), s2, sizeof(s2));
89 printf("%s %d/%d bytes at offset %lld\n",
90 op, total, count, (long long)offset);
91 printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
92 s1, cnt, ts, s2, tdiv((double)cnt, *t));
93 } else {/* bytes,ops,time,bytes/sec,ops/sec */
94 printf("%d,%d,%s,%.3f,%.3f\n",
96 tdiv((double)total, *t),
97 tdiv((double)cnt, *t));
102 * Parse multiple length statements for vectored I/O, and construct an I/O
103 * vector matching it.
106 create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern)
108 size_t *sizes = calloc(nr_iov, sizeof(size_t));
113 for (i = 0; i < nr_iov; i++) {
119 printf("non-numeric length argument -- %s\n", arg);
123 /* should be SIZE_T_MAX, but that doesn't exist */
124 if (len > UINT_MAX) {
125 printf("too large length argument -- %s\n", arg);
130 printf("length argument %lld is not sector aligned\n",
139 qemu_iovec_init(qiov, nr_iov);
141 buf = p = qemu_io_alloc(count, pattern);
143 for (i = 0; i < nr_iov; i++) {
144 qemu_iovec_add(qiov, p, sizes[i]);
152 static int do_read(char *buf, int64_t offset, int count, int *total)
156 ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9);
163 static int do_write(char *buf, int64_t offset, int count, int *total)
167 ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9);
174 static int do_pread(char *buf, int64_t offset, int count, int *total)
176 *total = bdrv_pread(bs, offset, (uint8_t *)buf, count);
182 static int do_pwrite(char *buf, int64_t offset, int count, int *total)
184 *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count);
190 #define NOT_DONE 0x7fffffff
191 static void aio_rw_done(void *opaque, int ret)
193 *(int *)opaque = ret;
196 static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total)
198 BlockDriverAIOCB *acb;
199 int async_ret = NOT_DONE;
201 acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9,
202 aio_rw_done, &async_ret);
206 while (async_ret == NOT_DONE)
210 return async_ret < 0 ? async_ret : 1;
213 static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total)
215 BlockDriverAIOCB *acb;
216 int async_ret = NOT_DONE;
218 acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9,
219 aio_rw_done, &async_ret);
223 while (async_ret == NOT_DONE)
227 return async_ret < 0 ? async_ret : 1;
231 static const cmdinfo_t read_cmd;
238 " reads a range of bytes from the given offset\n"
241 " 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
243 " Reads a segment of the currently open file, optionally dumping it to the\n"
244 " standard output stream (with -v option) for subsequent inspection.\n"
245 " -C, -- report statistics in a machine parsable format\n"
246 " -l, -- length for pattern verification (only with -P)\n"
247 " -p, -- use bdrv_pread to read the file\n"
248 " -P, -- use a pattern to verify read data\n"
249 " -q, -- quite mode, do not show I/O statistics\n"
250 " -s, -- start offset for pattern verification (only with -P)\n"
251 " -v, -- dump buffer to standard output\n"
256 read_f(int argc, char **argv)
258 struct timeval t1, t2;
259 int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
260 int Pflag = 0, sflag = 0, lflag = 0;
265 /* Some compilers get confused and warn if this is not initialized. */
267 int pattern = 0, pattern_offset = 0, pattern_count = 0;
269 while ((c = getopt(argc, argv, "Cl:pP:qs:v")) != EOF) {
276 pattern_count = cvtnum(optarg);
277 if (pattern_count < 0) {
278 printf("non-numeric length argument -- %s\n", optarg);
287 pattern = atoi(optarg);
294 pattern_offset = cvtnum(optarg);
295 if (pattern_offset < 0) {
296 printf("non-numeric length argument -- %s\n", optarg);
304 return command_usage(&read_cmd);
308 if (optind != argc - 2)
309 return command_usage(&read_cmd);
311 offset = cvtnum(argv[optind]);
313 printf("non-numeric length argument -- %s\n", argv[optind]);
318 count = cvtnum(argv[optind]);
320 printf("non-numeric length argument -- %s\n", argv[optind]);
324 if (!Pflag && (lflag || sflag)) {
325 return command_usage(&read_cmd);
329 pattern_count = count - pattern_offset;
332 if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) {
333 printf("pattern verfication range exceeds end of read data\n");
338 if (offset & 0x1ff) {
339 printf("offset %lld is not sector aligned\n",
344 printf("count %d is not sector aligned\n",
350 buf = qemu_io_alloc(count, 0xab);
352 gettimeofday(&t1, NULL);
354 cnt = do_pread(buf, offset, count, &total);
356 cnt = do_read(buf, offset, count, &total);
357 gettimeofday(&t2, NULL);
360 printf("read failed: %s\n", strerror(-cnt));
365 void* cmp_buf = malloc(pattern_count);
366 memset(cmp_buf, pattern, pattern_count);
367 if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
368 printf("Pattern verification failed at offset %lld, "
370 (long long) offset + pattern_offset, pattern_count);
379 dump_buffer(buf, offset, count);
381 /* Finally, report back -- -C gives a parsable format */
383 print_report("read", &t2, offset, count, total, cnt, Cflag);
390 static const cmdinfo_t read_cmd = {
396 .args = "[-aCpqv] [-P pattern [-s off] [-l len]] off len",
397 .oneline = "reads a number of bytes at a specified offset",
401 static const cmdinfo_t readv_cmd;
408 " reads a range of bytes from the given offset into multiple buffers\n"
411 " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
413 " Reads a segment of the currently open file, optionally dumping it to the\n"
414 " standard output stream (with -v option) for subsequent inspection.\n"
415 " Uses multiple iovec buffers if more than one byte range is specified.\n"
416 " -C, -- report statistics in a machine parsable format\n"
417 " -P, -- use a pattern to verify read data\n"
418 " -v, -- dump buffer to standard output\n"
419 " -q, -- quite mode, do not show I/O statistics\n"
424 readv_f(int argc, char **argv)
426 struct timeval t1, t2;
427 int Cflag = 0, qflag = 0, vflag = 0;
437 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
444 pattern = atoi(optarg);
453 return command_usage(&readv_cmd);
457 if (optind > argc - 2)
458 return command_usage(&readv_cmd);
461 offset = cvtnum(argv[optind]);
463 printf("non-numeric length argument -- %s\n", argv[optind]);
468 if (offset & 0x1ff) {
469 printf("offset %lld is not sector aligned\n",
474 nr_iov = argc - optind;
475 buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
477 gettimeofday(&t1, NULL);
478 cnt = do_aio_readv(&qiov, offset, &total);
479 gettimeofday(&t2, NULL);
482 printf("readv failed: %s\n", strerror(-cnt));
487 void* cmp_buf = malloc(qiov.size);
488 memset(cmp_buf, pattern, qiov.size);
489 if (memcmp(buf, cmp_buf, qiov.size)) {
490 printf("Pattern verification failed at offset %lld, "
492 (long long) offset, qiov.size);
501 dump_buffer(buf, offset, qiov.size);
503 /* Finally, report back -- -C gives a parsable format */
505 print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
512 static const cmdinfo_t readv_cmd = {
517 .args = "[-Cqv] [-P pattern ] off len [len..]",
518 .oneline = "reads a number of bytes at a specified offset",
522 static const cmdinfo_t write_cmd;
529 " writes a range of bytes from the given offset\n"
532 " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
534 " Writes into a segment of the currently open file, using a buffer\n"
535 " filled with a set pattern (0xcdcdcdcd).\n"
536 " -p, -- use bdrv_pwrite to write the file\n"
537 " -P, -- use different pattern to fill file\n"
538 " -C, -- report statistics in a machine parsable format\n"
539 " -q, -- quite mode, do not show I/O statistics\n"
544 write_f(int argc, char **argv)
546 struct timeval t1, t2;
547 int Cflag = 0, pflag = 0, qflag = 0;
552 /* Some compilers get confused and warn if this is not initialized. */
556 while ((c = getopt(argc, argv, "CpP:q")) != EOF) {
565 pattern = atoi(optarg);
571 return command_usage(&write_cmd);
575 if (optind != argc - 2)
576 return command_usage(&write_cmd);
578 offset = cvtnum(argv[optind]);
580 printf("non-numeric length argument -- %s\n", argv[optind]);
585 count = cvtnum(argv[optind]);
587 printf("non-numeric length argument -- %s\n", argv[optind]);
592 if (offset & 0x1ff) {
593 printf("offset %lld is not sector aligned\n",
599 printf("count %d is not sector aligned\n",
605 buf = qemu_io_alloc(count, pattern);
607 gettimeofday(&t1, NULL);
609 cnt = do_pwrite(buf, offset, count, &total);
611 cnt = do_write(buf, offset, count, &total);
612 gettimeofday(&t2, NULL);
615 printf("write failed: %s\n", strerror(-cnt));
622 /* Finally, report back -- -C gives a parsable format */
624 print_report("wrote", &t2, offset, count, total, cnt, Cflag);
631 static const cmdinfo_t write_cmd = {
637 .args = "[-aCpq] [-P pattern ] off len",
638 .oneline = "writes a number of bytes at a specified offset",
642 static const cmdinfo_t writev_cmd;
649 " writes a range of bytes from the given offset source from multiple buffers\n"
652 " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
654 " Writes into a segment of the currently open file, using a buffer\n"
655 " filled with a set pattern (0xcdcdcdcd).\n"
656 " -P, -- use different pattern to fill file\n"
657 " -C, -- report statistics in a machine parsable format\n"
658 " -q, -- quite mode, do not show I/O statistics\n"
663 writev_f(int argc, char **argv)
665 struct timeval t1, t2;
666 int Cflag = 0, qflag = 0;
675 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
684 pattern = atoi(optarg);
687 return command_usage(&writev_cmd);
691 if (optind > argc - 2)
692 return command_usage(&writev_cmd);
694 offset = cvtnum(argv[optind]);
696 printf("non-numeric length argument -- %s\n", argv[optind]);
701 if (offset & 0x1ff) {
702 printf("offset %lld is not sector aligned\n",
707 nr_iov = argc - optind;
708 buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern);
710 gettimeofday(&t1, NULL);
711 cnt = do_aio_writev(&qiov, offset, &total);
712 gettimeofday(&t2, NULL);
715 printf("writev failed: %s\n", strerror(-cnt));
722 /* Finally, report back -- -C gives a parsable format */
724 print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
731 static const cmdinfo_t writev_cmd = {
736 .args = "[-Cq] [-P pattern ] off len [len..]",
737 .oneline = "writes a number of bytes at a specified offset",
754 aio_write_done(void *opaque, int ret)
756 struct aio_ctx *ctx = opaque;
759 gettimeofday(&t2, NULL);
763 printf("aio_write failed: %s\n", strerror(-ret));
771 /* Finally, report back -- -C gives a parsable format */
772 t2 = tsub(t2, ctx->t1);
773 print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
774 ctx->qiov.size, 1, ctx->Cflag);
776 qemu_io_free(ctx->buf);
780 static const cmdinfo_t aio_read_cmd;
783 aio_read_done(void *opaque, int ret)
785 struct aio_ctx *ctx = opaque;
788 gettimeofday(&t2, NULL);
791 printf("readv failed: %s\n", strerror(-ret));
796 void *cmp_buf = malloc(ctx->qiov.size);
798 memset(cmp_buf, ctx->pattern, ctx->qiov.size);
799 if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
800 printf("Pattern verification failed at offset %lld, "
802 (long long) ctx->offset, ctx->qiov.size);
812 dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
815 /* Finally, report back -- -C gives a parsable format */
816 t2 = tsub(t2, ctx->t1);
817 print_report("read", &t2, ctx->offset, ctx->qiov.size,
818 ctx->qiov.size, 1, ctx->Cflag);
820 qemu_io_free(ctx->buf);
829 " asynchronously reads a range of bytes from the given offset\n"
832 " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
834 " Reads a segment of the currently open file, optionally dumping it to the\n"
835 " standard output stream (with -v option) for subsequent inspection.\n"
836 " The read is performed asynchronously and should the aio_flush command \n"
837 " should be used to ensure all outstanding aio requests have been completed\n"
838 " -C, -- report statistics in a machine parsable format\n"
839 " -P, -- use a pattern to verify read data\n"
840 " -v, -- dump buffer to standard output\n"
841 " -q, -- quite mode, do not show I/O statistics\n"
846 aio_read_f(int argc, char **argv)
849 struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
850 BlockDriverAIOCB *acb;
852 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
859 ctx->pattern = atoi(optarg);
868 return command_usage(&aio_read_cmd);
872 if (optind > argc - 2)
873 return command_usage(&aio_read_cmd);
876 ctx->offset = cvtnum(argv[optind]);
877 if (ctx->offset < 0) {
878 printf("non-numeric length argument -- %s\n", argv[optind]);
883 if (ctx->offset & 0x1ff) {
884 printf("offset %lld is not sector aligned\n",
885 (long long)ctx->offset);
889 nr_iov = argc - optind;
890 ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
892 gettimeofday(&ctx->t1, NULL);
893 acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
894 ctx->qiov.size >> 9, aio_read_done, ctx);
901 static const cmdinfo_t aio_read_cmd = {
906 .args = "[-Cqv] [-P pattern ] off len [len..]",
907 .oneline = "asynchronously reads a number of bytes",
908 .help = aio_read_help,
911 static const cmdinfo_t aio_write_cmd;
918 " asynchronously writes a range of bytes from the given offset source \n"
919 " from multiple buffers\n"
922 " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
924 " Writes into a segment of the currently open file, using a buffer\n"
925 " filled with a set pattern (0xcdcdcdcd).\n"
926 " The write is performed asynchronously and should the aio_flush command \n"
927 " should be used to ensure all outstanding aio requests have been completed\n"
928 " -P, -- use different pattern to fill file\n"
929 " -C, -- report statistics in a machine parsable format\n"
930 " -q, -- quite mode, do not show I/O statistics\n"
936 aio_write_f(int argc, char **argv)
940 struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
941 BlockDriverAIOCB *acb;
943 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
952 pattern = atoi(optarg);
955 return command_usage(&aio_write_cmd);
959 if (optind > argc - 2)
960 return command_usage(&aio_write_cmd);
962 ctx->offset = cvtnum(argv[optind]);
963 if (ctx->offset < 0) {
964 printf("non-numeric length argument -- %s\n", argv[optind]);
969 if (ctx->offset & 0x1ff) {
970 printf("offset %lld is not sector aligned\n",
971 (long long)ctx->offset);
975 nr_iov = argc - optind;
976 ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern);
978 gettimeofday(&ctx->t1, NULL);
979 acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
980 ctx->qiov.size >> 9, aio_write_done, ctx);
987 static const cmdinfo_t aio_write_cmd = {
989 .cfunc = aio_write_f,
992 .args = "[-Cq] [-P pattern ] off len [len..]",
993 .oneline = "asynchronously writes a number of bytes",
994 .help = aio_write_help,
998 aio_flush_f(int argc, char **argv)
1004 static const cmdinfo_t aio_flush_cmd = {
1005 .name = "aio_flush",
1006 .cfunc = aio_flush_f,
1007 .oneline = "completes all outstanding aio requets"
1011 flush_f(int argc, char **argv)
1017 static const cmdinfo_t flush_cmd = {
1021 .oneline = "flush all in-core file state to disk",
1025 truncate_f(int argc, char **argv)
1030 offset = cvtnum(argv[1]);
1032 printf("non-numeric truncate argument -- %s\n", argv[1]);
1036 ret = bdrv_truncate(bs, offset);
1038 printf("truncate: %s", strerror(ret));
1045 static const cmdinfo_t truncate_cmd = {
1048 .cfunc = truncate_f,
1052 .oneline = "truncates the current file at the given offset",
1056 length_f(int argc, char **argv)
1061 size = bdrv_getlength(bs);
1063 printf("getlength: %s", strerror(size));
1067 cvtstr(size, s1, sizeof(s1));
1073 static const cmdinfo_t length_cmd = {
1077 .oneline = "gets the length of the current file",
1082 info_f(int argc, char **argv)
1084 BlockDriverInfo bdi;
1085 char s1[64], s2[64];
1088 if (bs->drv && bs->drv->format_name)
1089 printf("format name: %s\n", bs->drv->format_name);
1090 if (bs->drv && bs->drv->protocol_name)
1091 printf("format name: %s\n", bs->drv->protocol_name);
1093 ret = bdrv_get_info(bs, &bdi);
1097 cvtstr(bdi.cluster_size, s1, sizeof(s1));
1098 cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
1100 printf("cluster size: %s\n", s1);
1101 printf("vm state offset: %s\n", s2);
1108 static const cmdinfo_t info_cmd = {
1112 .oneline = "prints information about the current file",
1116 alloc_f(int argc, char **argv)
1125 offset = cvtnum(argv[1]);
1126 if (offset & 0x1ff) {
1127 printf("offset %lld is not sector aligned\n",
1133 nb_sectors = cvtnum(argv[2]);
1137 ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
1139 cvtstr(offset, s1, sizeof(s1));
1141 retstr = ret ? "allocated" : "not allocated";
1142 if (nb_sectors == 1)
1143 printf("sector %s at offset %s\n", retstr, s1);
1145 printf("%d/%d sectors %s at offset %s\n",
1146 num, nb_sectors, retstr, s1);
1150 static const cmdinfo_t alloc_cmd = {
1156 .args = "off [sectors]",
1157 .oneline = "checks if a sector is present in the file",
1161 close_f(int argc, char **argv)
1168 static const cmdinfo_t close_cmd = {
1172 .oneline = "close the current open file",
1175 static int openfile(char *name, int flags, int growable)
1178 fprintf(stderr, "file open already, try 'help close'\n");
1182 bs = bdrv_new("hda");
1186 if (bdrv_open(bs, name, flags) == -1) {
1187 fprintf(stderr, "%s: can't open device %s\n", progname, name);
1194 if (!bs->drv || !bs->drv->protocol_name) {
1196 "%s: only protocols can be opened growable\n",
1211 " opens a new file in the requested mode\n"
1214 " 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
1216 " Opens a file for subsequent use by all of the other qemu-io commands.\n"
1217 " -C, -- create new file if it doesn't exist\n"
1218 " -r, -- open file read-only\n"
1219 " -s, -- use snapshot file\n"
1220 " -n, -- disable host cache\n"
1221 " -g, -- allow file to grow (only applies to protocols)"
1225 static const cmdinfo_t open_cmd;
1228 open_f(int argc, char **argv)
1235 while ((c = getopt(argc, argv, "snCrg")) != EOF) {
1238 flags |= BDRV_O_SNAPSHOT;
1241 flags |= BDRV_O_NOCACHE;
1244 flags |= BDRV_O_CREAT;
1253 return command_usage(&open_cmd);
1258 flags |= BDRV_O_RDONLY;
1260 flags |= BDRV_O_RDWR;
1262 if (optind != argc - 1)
1263 return command_usage(&open_cmd);
1265 return openfile(argv[optind], flags, growable);
1268 static const cmdinfo_t open_cmd = {
1274 .flags = CMD_NOFILE_OK,
1275 .args = "[-Crsn] [path]",
1276 .oneline = "open the file specified by path",
1284 /* only one device allowed so far */
1292 const cmdinfo_t *ct)
1294 if (ct->flags & CMD_FLAG_GLOBAL)
1296 if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
1297 fprintf(stderr, "no file open, try 'help open'\n");
1303 static void usage(const char *name)
1306 "Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
1307 "QEMU Disk exerciser\n"
1309 " -C, --create create new file if it doesn't exist\n"
1310 " -c, --cmd command to execute\n"
1311 " -r, --read-only export read-only\n"
1312 " -s, --snapshot use snapshot file\n"
1313 " -n, --nocache disable host cache\n"
1314 " -m, --misalign misalign allocations for O_DIRECT\n"
1315 " -h, --help display this help and exit\n"
1316 " -V, --version output version information and exit\n"
1322 int main(int argc, char **argv)
1326 const char *sopt = "hVc:Crsnmg";
1327 struct option lopt[] = {
1328 { "help", 0, 0, 'h' },
1329 { "version", 0, 0, 'V' },
1330 { "offset", 1, 0, 'o' },
1331 { "cmd", 1, 0, 'c' },
1332 { "create", 0, 0, 'C' },
1333 { "read-only", 0, 0, 'r' },
1334 { "snapshot", 0, 0, 's' },
1335 { "nocache", 0, 0, 'n' },
1336 { "misalign", 0, 0, 'm' },
1337 { "growable", 0, 0, 'g' },
1344 progname = basename(argv[0]);
1346 while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
1349 flags |= BDRV_O_SNAPSHOT;
1352 flags |= BDRV_O_NOCACHE;
1355 add_user_command(optarg);
1358 flags |= BDRV_O_CREAT;
1370 printf("%s version %s\n", progname, VERSION);
1381 if ((argc - optind) > 1) {
1388 /* initialize commands */
1391 add_command(&open_cmd);
1392 add_command(&close_cmd);
1393 add_command(&read_cmd);
1394 add_command(&readv_cmd);
1395 add_command(&write_cmd);
1396 add_command(&writev_cmd);
1397 add_command(&aio_read_cmd);
1398 add_command(&aio_write_cmd);
1399 add_command(&aio_flush_cmd);
1400 add_command(&flush_cmd);
1401 add_command(&truncate_cmd);
1402 add_command(&length_cmd);
1403 add_command(&info_cmd);
1404 add_command(&alloc_cmd);
1406 add_args_command(init_args_command);
1407 add_check_command(init_check_command);
1409 /* open the device */
1411 flags |= BDRV_O_RDONLY;
1413 flags |= BDRV_O_RDWR;
1415 if ((argc - optind) == 1)
1416 openfile(argv[optind], flags, growable);
1420 * Make sure all outstanding requests get flushed the program exits.