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);
391 static const cmdinfo_t read_cmd = {
397 .args = "[-aCpqv] [-P pattern [-s off] [-l len]] off len",
398 .oneline = "reads a number of bytes at a specified offset",
402 static const cmdinfo_t readv_cmd;
409 " reads a range of bytes from the given offset into multiple buffers\n"
412 " 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
414 " Reads a segment of the currently open file, optionally dumping it to the\n"
415 " standard output stream (with -v option) for subsequent inspection.\n"
416 " Uses multiple iovec buffers if more than one byte range is specified.\n"
417 " -C, -- report statistics in a machine parsable format\n"
418 " -P, -- use a pattern to verify read data\n"
419 " -v, -- dump buffer to standard output\n"
420 " -q, -- quite mode, do not show I/O statistics\n"
425 readv_f(int argc, char **argv)
427 struct timeval t1, t2;
428 int Cflag = 0, qflag = 0, vflag = 0;
438 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
445 pattern = atoi(optarg);
454 return command_usage(&readv_cmd);
458 if (optind > argc - 2)
459 return command_usage(&readv_cmd);
462 offset = cvtnum(argv[optind]);
464 printf("non-numeric length argument -- %s\n", argv[optind]);
469 if (offset & 0x1ff) {
470 printf("offset %lld is not sector aligned\n",
475 nr_iov = argc - optind;
476 buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
478 gettimeofday(&t1, NULL);
479 cnt = do_aio_readv(&qiov, offset, &total);
480 gettimeofday(&t2, NULL);
483 printf("readv failed: %s\n", strerror(-cnt));
488 void* cmp_buf = malloc(qiov.size);
489 memset(cmp_buf, pattern, qiov.size);
490 if (memcmp(buf, cmp_buf, qiov.size)) {
491 printf("Pattern verification failed at offset %lld, "
493 (long long) offset, qiov.size);
502 dump_buffer(buf, offset, qiov.size);
504 /* Finally, report back -- -C gives a parsable format */
506 print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
513 static const cmdinfo_t readv_cmd = {
518 .args = "[-Cqv] [-P pattern ] off len [len..]",
519 .oneline = "reads a number of bytes at a specified offset",
523 static const cmdinfo_t write_cmd;
530 " writes a range of bytes from the given offset\n"
533 " 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
535 " Writes into a segment of the currently open file, using a buffer\n"
536 " filled with a set pattern (0xcdcdcdcd).\n"
537 " -p, -- use bdrv_pwrite to write the file\n"
538 " -P, -- use different pattern to fill file\n"
539 " -C, -- report statistics in a machine parsable format\n"
540 " -q, -- quite mode, do not show I/O statistics\n"
545 write_f(int argc, char **argv)
547 struct timeval t1, t2;
548 int Cflag = 0, pflag = 0, qflag = 0;
553 /* Some compilers get confused and warn if this is not initialized. */
557 while ((c = getopt(argc, argv, "CpP:q")) != EOF) {
566 pattern = atoi(optarg);
572 return command_usage(&write_cmd);
576 if (optind != argc - 2)
577 return command_usage(&write_cmd);
579 offset = cvtnum(argv[optind]);
581 printf("non-numeric length argument -- %s\n", argv[optind]);
586 count = cvtnum(argv[optind]);
588 printf("non-numeric length argument -- %s\n", argv[optind]);
593 if (offset & 0x1ff) {
594 printf("offset %lld is not sector aligned\n",
600 printf("count %d is not sector aligned\n",
606 buf = qemu_io_alloc(count, pattern);
608 gettimeofday(&t1, NULL);
610 cnt = do_pwrite(buf, offset, count, &total);
612 cnt = do_write(buf, offset, count, &total);
613 gettimeofday(&t2, NULL);
616 printf("write failed: %s\n", strerror(-cnt));
623 /* Finally, report back -- -C gives a parsable format */
625 print_report("wrote", &t2, offset, count, total, cnt, Cflag);
633 static const cmdinfo_t write_cmd = {
639 .args = "[-aCpq] [-P pattern ] off len",
640 .oneline = "writes a number of bytes at a specified offset",
644 static const cmdinfo_t writev_cmd;
651 " writes a range of bytes from the given offset source from multiple buffers\n"
654 " 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
656 " Writes into a segment of the currently open file, using a buffer\n"
657 " filled with a set pattern (0xcdcdcdcd).\n"
658 " -P, -- use different pattern to fill file\n"
659 " -C, -- report statistics in a machine parsable format\n"
660 " -q, -- quite mode, do not show I/O statistics\n"
665 writev_f(int argc, char **argv)
667 struct timeval t1, t2;
668 int Cflag = 0, qflag = 0;
677 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
686 pattern = atoi(optarg);
689 return command_usage(&writev_cmd);
693 if (optind > argc - 2)
694 return command_usage(&writev_cmd);
696 offset = cvtnum(argv[optind]);
698 printf("non-numeric length argument -- %s\n", argv[optind]);
703 if (offset & 0x1ff) {
704 printf("offset %lld is not sector aligned\n",
709 nr_iov = argc - optind;
710 buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern);
712 gettimeofday(&t1, NULL);
713 cnt = do_aio_writev(&qiov, offset, &total);
714 gettimeofday(&t2, NULL);
717 printf("writev failed: %s\n", strerror(-cnt));
724 /* Finally, report back -- -C gives a parsable format */
726 print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
732 static const cmdinfo_t writev_cmd = {
737 .args = "[-Cq] [-P pattern ] off len [len..]",
738 .oneline = "writes a number of bytes at a specified offset",
755 aio_write_done(void *opaque, int ret)
757 struct aio_ctx *ctx = opaque;
760 gettimeofday(&t2, NULL);
764 printf("aio_write failed: %s\n", strerror(-ret));
772 /* Finally, report back -- -C gives a parsable format */
773 t2 = tsub(t2, ctx->t1);
774 print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
775 ctx->qiov.size, 1, ctx->Cflag);
777 qemu_io_free(ctx->buf);
781 static const cmdinfo_t aio_read_cmd;
784 aio_read_done(void *opaque, int ret)
786 struct aio_ctx *ctx = opaque;
789 gettimeofday(&t2, NULL);
792 printf("readv failed: %s\n", strerror(-ret));
797 void *cmp_buf = malloc(ctx->qiov.size);
799 memset(cmp_buf, ctx->pattern, ctx->qiov.size);
800 if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
801 printf("Pattern verification failed at offset %lld, "
803 (long long) ctx->offset, ctx->qiov.size);
813 dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
816 /* Finally, report back -- -C gives a parsable format */
817 t2 = tsub(t2, ctx->t1);
818 print_report("read", &t2, ctx->offset, ctx->qiov.size,
819 ctx->qiov.size, 1, ctx->Cflag);
821 qemu_io_free(ctx->buf);
830 " asynchronously reads a range of bytes from the given offset\n"
833 " 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
835 " Reads a segment of the currently open file, optionally dumping it to the\n"
836 " standard output stream (with -v option) for subsequent inspection.\n"
837 " The read is performed asynchronously and should the aio_flush command \n"
838 " should be used to ensure all outstanding aio requests have been completed\n"
839 " -C, -- report statistics in a machine parsable format\n"
840 " -P, -- use a pattern to verify read data\n"
841 " -v, -- dump buffer to standard output\n"
842 " -q, -- quite mode, do not show I/O statistics\n"
847 aio_read_f(int argc, char **argv)
850 struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
851 BlockDriverAIOCB *acb;
853 while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
860 ctx->pattern = atoi(optarg);
870 return command_usage(&aio_read_cmd);
874 if (optind > argc - 2) {
876 return command_usage(&aio_read_cmd);
879 ctx->offset = cvtnum(argv[optind]);
880 if (ctx->offset < 0) {
881 printf("non-numeric length argument -- %s\n", argv[optind]);
887 if (ctx->offset & 0x1ff) {
888 printf("offset %lld is not sector aligned\n",
889 (long long)ctx->offset);
894 nr_iov = argc - optind;
895 ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
897 gettimeofday(&ctx->t1, NULL);
898 acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
899 ctx->qiov.size >> 9, aio_read_done, ctx);
909 static const cmdinfo_t aio_read_cmd = {
914 .args = "[-Cqv] [-P pattern ] off len [len..]",
915 .oneline = "asynchronously reads a number of bytes",
916 .help = aio_read_help,
919 static const cmdinfo_t aio_write_cmd;
926 " asynchronously writes a range of bytes from the given offset source \n"
927 " from multiple buffers\n"
930 " 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
932 " Writes into a segment of the currently open file, using a buffer\n"
933 " filled with a set pattern (0xcdcdcdcd).\n"
934 " The write is performed asynchronously and should the aio_flush command \n"
935 " should be used to ensure all outstanding aio requests have been completed\n"
936 " -P, -- use different pattern to fill file\n"
937 " -C, -- report statistics in a machine parsable format\n"
938 " -q, -- quite mode, do not show I/O statistics\n"
944 aio_write_f(int argc, char **argv)
948 struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx));
949 BlockDriverAIOCB *acb;
951 while ((c = getopt(argc, argv, "CqP:")) != EOF) {
960 pattern = atoi(optarg);
964 return command_usage(&aio_write_cmd);
968 if (optind > argc - 2) {
970 return command_usage(&aio_write_cmd);
973 ctx->offset = cvtnum(argv[optind]);
974 if (ctx->offset < 0) {
975 printf("non-numeric length argument -- %s\n", argv[optind]);
981 if (ctx->offset & 0x1ff) {
982 printf("offset %lld is not sector aligned\n",
983 (long long)ctx->offset);
988 nr_iov = argc - optind;
989 ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern);
991 gettimeofday(&ctx->t1, NULL);
992 acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
993 ctx->qiov.size >> 9, aio_write_done, ctx);
1003 static const cmdinfo_t aio_write_cmd = {
1004 .name = "aio_write",
1005 .cfunc = aio_write_f,
1008 .args = "[-Cq] [-P pattern ] off len [len..]",
1009 .oneline = "asynchronously writes a number of bytes",
1010 .help = aio_write_help,
1014 aio_flush_f(int argc, char **argv)
1020 static const cmdinfo_t aio_flush_cmd = {
1021 .name = "aio_flush",
1022 .cfunc = aio_flush_f,
1023 .oneline = "completes all outstanding aio requets"
1027 flush_f(int argc, char **argv)
1033 static const cmdinfo_t flush_cmd = {
1037 .oneline = "flush all in-core file state to disk",
1041 truncate_f(int argc, char **argv)
1046 offset = cvtnum(argv[1]);
1048 printf("non-numeric truncate argument -- %s\n", argv[1]);
1052 ret = bdrv_truncate(bs, offset);
1054 printf("truncate: %s", strerror(ret));
1061 static const cmdinfo_t truncate_cmd = {
1064 .cfunc = truncate_f,
1068 .oneline = "truncates the current file at the given offset",
1072 length_f(int argc, char **argv)
1077 size = bdrv_getlength(bs);
1079 printf("getlength: %s", strerror(size));
1083 cvtstr(size, s1, sizeof(s1));
1089 static const cmdinfo_t length_cmd = {
1093 .oneline = "gets the length of the current file",
1098 info_f(int argc, char **argv)
1100 BlockDriverInfo bdi;
1101 char s1[64], s2[64];
1104 if (bs->drv && bs->drv->format_name)
1105 printf("format name: %s\n", bs->drv->format_name);
1106 if (bs->drv && bs->drv->protocol_name)
1107 printf("format name: %s\n", bs->drv->protocol_name);
1109 ret = bdrv_get_info(bs, &bdi);
1113 cvtstr(bdi.cluster_size, s1, sizeof(s1));
1114 cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
1116 printf("cluster size: %s\n", s1);
1117 printf("vm state offset: %s\n", s2);
1124 static const cmdinfo_t info_cmd = {
1128 .oneline = "prints information about the current file",
1132 alloc_f(int argc, char **argv)
1141 offset = cvtnum(argv[1]);
1142 if (offset & 0x1ff) {
1143 printf("offset %lld is not sector aligned\n",
1149 nb_sectors = cvtnum(argv[2]);
1153 ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
1155 cvtstr(offset, s1, sizeof(s1));
1157 retstr = ret ? "allocated" : "not allocated";
1158 if (nb_sectors == 1)
1159 printf("sector %s at offset %s\n", retstr, s1);
1161 printf("%d/%d sectors %s at offset %s\n",
1162 num, nb_sectors, retstr, s1);
1166 static const cmdinfo_t alloc_cmd = {
1172 .args = "off [sectors]",
1173 .oneline = "checks if a sector is present in the file",
1177 close_f(int argc, char **argv)
1184 static const cmdinfo_t close_cmd = {
1188 .oneline = "close the current open file",
1191 static int openfile(char *name, int flags, int growable)
1194 fprintf(stderr, "file open already, try 'help close'\n");
1198 bs = bdrv_new("hda");
1202 if (bdrv_open(bs, name, flags) == -1) {
1203 fprintf(stderr, "%s: can't open device %s\n", progname, name);
1210 if (!bs->drv || !bs->drv->protocol_name) {
1212 "%s: only protocols can be opened growable\n",
1227 " opens a new file in the requested mode\n"
1230 " 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
1232 " Opens a file for subsequent use by all of the other qemu-io commands.\n"
1233 " -C, -- create new file if it doesn't exist\n"
1234 " -r, -- open file read-only\n"
1235 " -s, -- use snapshot file\n"
1236 " -n, -- disable host cache\n"
1237 " -g, -- allow file to grow (only applies to protocols)"
1241 static const cmdinfo_t open_cmd;
1244 open_f(int argc, char **argv)
1251 while ((c = getopt(argc, argv, "snCrg")) != EOF) {
1254 flags |= BDRV_O_SNAPSHOT;
1257 flags |= BDRV_O_NOCACHE;
1260 flags |= BDRV_O_CREAT;
1269 return command_usage(&open_cmd);
1274 flags |= BDRV_O_RDONLY;
1276 flags |= BDRV_O_RDWR;
1278 if (optind != argc - 1)
1279 return command_usage(&open_cmd);
1281 return openfile(argv[optind], flags, growable);
1284 static const cmdinfo_t open_cmd = {
1290 .flags = CMD_NOFILE_OK,
1291 .args = "[-Crsn] [path]",
1292 .oneline = "open the file specified by path",
1300 /* only one device allowed so far */
1308 const cmdinfo_t *ct)
1310 if (ct->flags & CMD_FLAG_GLOBAL)
1312 if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
1313 fprintf(stderr, "no file open, try 'help open'\n");
1319 static void usage(const char *name)
1322 "Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
1323 "QEMU Disk exerciser\n"
1325 " -C, --create create new file if it doesn't exist\n"
1326 " -c, --cmd command to execute\n"
1327 " -r, --read-only export read-only\n"
1328 " -s, --snapshot use snapshot file\n"
1329 " -n, --nocache disable host cache\n"
1330 " -m, --misalign misalign allocations for O_DIRECT\n"
1331 " -h, --help display this help and exit\n"
1332 " -V, --version output version information and exit\n"
1338 int main(int argc, char **argv)
1342 const char *sopt = "hVc:Crsnmg";
1343 struct option lopt[] = {
1344 { "help", 0, 0, 'h' },
1345 { "version", 0, 0, 'V' },
1346 { "offset", 1, 0, 'o' },
1347 { "cmd", 1, 0, 'c' },
1348 { "create", 0, 0, 'C' },
1349 { "read-only", 0, 0, 'r' },
1350 { "snapshot", 0, 0, 's' },
1351 { "nocache", 0, 0, 'n' },
1352 { "misalign", 0, 0, 'm' },
1353 { "growable", 0, 0, 'g' },
1360 progname = basename(argv[0]);
1362 while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
1365 flags |= BDRV_O_SNAPSHOT;
1368 flags |= BDRV_O_NOCACHE;
1371 add_user_command(optarg);
1374 flags |= BDRV_O_CREAT;
1386 printf("%s version %s\n", progname, VERSION);
1397 if ((argc - optind) > 1) {
1404 /* initialize commands */
1407 add_command(&open_cmd);
1408 add_command(&close_cmd);
1409 add_command(&read_cmd);
1410 add_command(&readv_cmd);
1411 add_command(&write_cmd);
1412 add_command(&writev_cmd);
1413 add_command(&aio_read_cmd);
1414 add_command(&aio_write_cmd);
1415 add_command(&aio_flush_cmd);
1416 add_command(&flush_cmd);
1417 add_command(&truncate_cmd);
1418 add_command(&length_cmd);
1419 add_command(&info_cmd);
1420 add_command(&alloc_cmd);
1422 add_args_command(init_args_command);
1423 add_check_command(init_check_command);
1425 /* open the device */
1427 flags |= BDRV_O_RDONLY;
1429 flags |= BDRV_O_RDWR;
1431 if ((argc - optind) == 1)
1432 openfile(argv[optind], flags, growable);
1436 * Make sure all outstanding requests get flushed the program exits.