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| 1 |
/*
|
|---|---|
| 2 |
* Command line utility to exercise the QEMU I/O path.
|
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*
|
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* Copyright (C) 2009 Red Hat, Inc.
|
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* Copyright (c) 2003-2005 Silicon Graphics, Inc.
|
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
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* See the COPYING file in the top-level directory.
|
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*/
|
| 10 |
#include <sys/time.h> |
| 11 |
#include <sys/types.h> |
| 12 |
#include <stdarg.h> |
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#include <stdio.h> |
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#include <getopt.h> |
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#include <libgen.h> |
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|
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#include "qemu-common.h" |
| 18 |
#include "block_int.h" |
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#include "cmd.h" |
| 20 |
|
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#define VERSION "0.0.1" |
| 22 |
|
| 23 |
#define CMD_NOFILE_OK 0x01 |
| 24 |
|
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char *progname;
|
| 26 |
static BlockDriverState *bs;
|
| 27 |
|
| 28 |
static int misalign; |
| 29 |
|
| 30 |
/*
|
| 31 |
* Parse the pattern argument to various sub-commands.
|
| 32 |
*
|
| 33 |
* Because the pattern is used as an argument to memset it must evaluate
|
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* to an unsigned integer that fits into a single byte.
|
| 35 |
*/
|
| 36 |
static int parse_pattern(const char *arg) |
| 37 |
{
|
| 38 |
char *endptr = NULL; |
| 39 |
long pattern;
|
| 40 |
|
| 41 |
pattern = strtol(arg, &endptr, 0);
|
| 42 |
if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
| 43 |
printf("%s is not a valid pattern byte\n", arg);
|
| 44 |
return -1; |
| 45 |
} |
| 46 |
|
| 47 |
return pattern;
|
| 48 |
} |
| 49 |
|
| 50 |
/*
|
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* Memory allocation helpers.
|
| 52 |
*
|
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* Make sure memory is aligned by default, or purposefully misaligned if
|
| 54 |
* that is specified on the command line.
|
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*/
|
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|
| 57 |
#define MISALIGN_OFFSET 16 |
| 58 |
static void *qemu_io_alloc(size_t len, int pattern) |
| 59 |
{
|
| 60 |
void *buf;
|
| 61 |
|
| 62 |
if (misalign)
|
| 63 |
len += MISALIGN_OFFSET; |
| 64 |
buf = qemu_blockalign(bs, len); |
| 65 |
memset(buf, pattern, len); |
| 66 |
if (misalign)
|
| 67 |
buf += MISALIGN_OFFSET; |
| 68 |
return buf;
|
| 69 |
} |
| 70 |
|
| 71 |
static void qemu_io_free(void *p) |
| 72 |
{
|
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if (misalign)
|
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p -= MISALIGN_OFFSET; |
| 75 |
qemu_vfree(p); |
| 76 |
} |
| 77 |
|
| 78 |
static void |
| 79 |
dump_buffer(const void *buffer, int64_t offset, int len) |
| 80 |
{
|
| 81 |
int i, j;
|
| 82 |
const uint8_t *p;
|
| 83 |
|
| 84 |
for (i = 0, p = buffer; i < len; i += 16) { |
| 85 |
const uint8_t *s = p;
|
| 86 |
|
| 87 |
printf("%08" PRIx64 ": ", offset + i); |
| 88 |
for (j = 0; j < 16 && i + j < len; j++, p++) |
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printf("%02x ", *p);
|
| 90 |
printf(" ");
|
| 91 |
for (j = 0; j < 16 && i + j < len; j++, s++) { |
| 92 |
if (isalnum(*s))
|
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printf("%c", *s);
|
| 94 |
else
|
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printf(".");
|
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} |
| 97 |
printf("\n");
|
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} |
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} |
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|
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static void |
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print_report(const char *op, struct timeval *t, int64_t offset, |
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int count, int total, int cnt, int Cflag) |
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{
|
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char s1[64], s2[64], ts[64]; |
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|
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timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
| 108 |
if (!Cflag) {
|
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cvtstr((double)total, s1, sizeof(s1)); |
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cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
| 111 |
printf("%s %d/%d bytes at offset %" PRId64 "\n", |
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op, total, count, offset); |
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printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
|
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s1, cnt, ts, s2, tdiv((double)cnt, *t));
|
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} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
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printf("%d,%d,%s,%.3f,%.3f\n",
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total, cnt, ts, |
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tdiv((double)total, *t),
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tdiv((double)cnt, *t));
|
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} |
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} |
| 122 |
|
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/*
|
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* Parse multiple length statements for vectored I/O, and construct an I/O
|
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* vector matching it.
|
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*/
|
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static void * |
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create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) |
| 129 |
{
|
| 130 |
size_t *sizes = calloc(nr_iov, sizeof(size_t));
|
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size_t count = 0;
|
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void *buf = NULL; |
| 133 |
void *p;
|
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int i;
|
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|
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for (i = 0; i < nr_iov; i++) { |
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char *arg = argv[i];
|
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int64_t len; |
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|
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len = cvtnum(arg); |
| 141 |
if (len < 0) { |
| 142 |
printf("non-numeric length argument -- %s\n", arg);
|
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goto fail;
|
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} |
| 145 |
|
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/* should be SIZE_T_MAX, but that doesn't exist */
|
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if (len > INT_MAX) {
|
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printf("too large length argument -- %s\n", arg);
|
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goto fail;
|
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} |
| 151 |
|
| 152 |
if (len & 0x1ff) { |
| 153 |
printf("length argument %" PRId64
|
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" is not sector aligned\n", len);
|
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goto fail;
|
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} |
| 157 |
|
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sizes[i] = len; |
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count += len; |
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} |
| 161 |
|
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qemu_iovec_init(qiov, nr_iov); |
| 163 |
|
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buf = p = qemu_io_alloc(count, pattern); |
| 165 |
|
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for (i = 0; i < nr_iov; i++) { |
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qemu_iovec_add(qiov, p, sizes[i]); |
| 168 |
p += sizes[i]; |
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} |
| 170 |
|
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fail:
|
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free(sizes); |
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return buf;
|
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} |
| 175 |
|
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static int do_read(char *buf, int64_t offset, int count, int *total) |
| 177 |
{
|
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int ret;
|
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|
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ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 181 |
if (ret < 0) |
| 182 |
return ret;
|
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*total = count; |
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return 1; |
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} |
| 186 |
|
| 187 |
static int do_write(char *buf, int64_t offset, int count, int *total) |
| 188 |
{
|
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int ret;
|
| 190 |
|
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ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
| 192 |
if (ret < 0) |
| 193 |
return ret;
|
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*total = count; |
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return 1; |
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} |
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|
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static int do_pread(char *buf, int64_t offset, int count, int *total) |
| 199 |
{
|
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*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
| 201 |
if (*total < 0) |
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return *total;
|
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return 1; |
| 204 |
} |
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|
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static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
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{
|
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*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
| 209 |
if (*total < 0) |
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return *total;
|
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return 1; |
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} |
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|
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static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
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{
|
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*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
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if (*total < 0) |
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return *total;
|
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return 1; |
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} |
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|
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static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
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{
|
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*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
| 225 |
if (*total < 0) |
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return *total;
|
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return 1; |
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} |
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|
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#define NOT_DONE 0x7fffffff |
| 231 |
static void aio_rw_done(void *opaque, int ret) |
| 232 |
{
|
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*(int *)opaque = ret;
|
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} |
| 235 |
|
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static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
| 237 |
{
|
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BlockDriverAIOCB *acb; |
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int async_ret = NOT_DONE;
|
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|
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acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
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aio_rw_done, &async_ret); |
| 243 |
if (!acb)
|
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return -EIO;
|
| 245 |
|
| 246 |
while (async_ret == NOT_DONE)
|
| 247 |
qemu_aio_wait(); |
| 248 |
|
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*total = qiov->size; |
| 250 |
return async_ret < 0 ? async_ret : 1; |
| 251 |
} |
| 252 |
|
| 253 |
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
| 254 |
{
|
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BlockDriverAIOCB *acb; |
| 256 |
int async_ret = NOT_DONE;
|
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|
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acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
| 259 |
aio_rw_done, &async_ret); |
| 260 |
if (!acb)
|
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return -EIO;
|
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|
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while (async_ret == NOT_DONE)
|
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qemu_aio_wait(); |
| 265 |
|
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*total = qiov->size; |
| 267 |
return async_ret < 0 ? async_ret : 1; |
| 268 |
} |
| 269 |
|
| 270 |
struct multiwrite_async_ret {
|
| 271 |
int num_done;
|
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int error;
|
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}; |
| 274 |
|
| 275 |
static void multiwrite_cb(void *opaque, int ret) |
| 276 |
{
|
| 277 |
struct multiwrite_async_ret *async_ret = opaque;
|
| 278 |
|
| 279 |
async_ret->num_done++; |
| 280 |
if (ret < 0) { |
| 281 |
async_ret->error = ret; |
| 282 |
} |
| 283 |
} |
| 284 |
|
| 285 |
static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total) |
| 286 |
{
|
| 287 |
int i, ret;
|
| 288 |
struct multiwrite_async_ret async_ret = {
|
| 289 |
.num_done = 0,
|
| 290 |
.error = 0,
|
| 291 |
}; |
| 292 |
|
| 293 |
*total = 0;
|
| 294 |
for (i = 0; i < num_reqs; i++) { |
| 295 |
reqs[i].cb = multiwrite_cb; |
| 296 |
reqs[i].opaque = &async_ret; |
| 297 |
*total += reqs[i].qiov->size; |
| 298 |
} |
| 299 |
|
| 300 |
ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
| 301 |
if (ret < 0) { |
| 302 |
return ret;
|
| 303 |
} |
| 304 |
|
| 305 |
while (async_ret.num_done < num_reqs) {
|
| 306 |
qemu_aio_wait(); |
| 307 |
} |
| 308 |
|
| 309 |
return async_ret.error < 0 ? async_ret.error : 1; |
| 310 |
} |
| 311 |
|
| 312 |
static void |
| 313 |
read_help(void)
|
| 314 |
{
|
| 315 |
printf( |
| 316 |
"\n"
|
| 317 |
" reads a range of bytes from the given offset\n"
|
| 318 |
"\n"
|
| 319 |
" Example:\n"
|
| 320 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
| 321 |
"\n"
|
| 322 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 323 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 324 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
| 325 |
" -C, -- report statistics in a machine parsable format\n"
|
| 326 |
" -l, -- length for pattern verification (only with -P)\n"
|
| 327 |
" -p, -- use bdrv_pread to read the file\n"
|
| 328 |
" -P, -- use a pattern to verify read data\n"
|
| 329 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 330 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
| 331 |
" -v, -- dump buffer to standard output\n"
|
| 332 |
"\n");
|
| 333 |
} |
| 334 |
|
| 335 |
static int read_f(int argc, char **argv); |
| 336 |
|
| 337 |
static const cmdinfo_t read_cmd = { |
| 338 |
.name = "read",
|
| 339 |
.altname = "r",
|
| 340 |
.cfunc = read_f, |
| 341 |
.argmin = 2,
|
| 342 |
.argmax = -1,
|
| 343 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
| 344 |
.oneline = "reads a number of bytes at a specified offset",
|
| 345 |
.help = read_help, |
| 346 |
}; |
| 347 |
|
| 348 |
static int |
| 349 |
read_f(int argc, char **argv) |
| 350 |
{
|
| 351 |
struct timeval t1, t2;
|
| 352 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
| 353 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
| 354 |
int c, cnt;
|
| 355 |
char *buf;
|
| 356 |
int64_t offset; |
| 357 |
int count;
|
| 358 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 359 |
int total = 0; |
| 360 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
| 361 |
|
| 362 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
| 363 |
switch (c) {
|
| 364 |
case 'b': |
| 365 |
bflag = 1;
|
| 366 |
break;
|
| 367 |
case 'C': |
| 368 |
Cflag = 1;
|
| 369 |
break;
|
| 370 |
case 'l': |
| 371 |
lflag = 1;
|
| 372 |
pattern_count = cvtnum(optarg); |
| 373 |
if (pattern_count < 0) { |
| 374 |
printf("non-numeric length argument -- %s\n", optarg);
|
| 375 |
return 0; |
| 376 |
} |
| 377 |
break;
|
| 378 |
case 'p': |
| 379 |
pflag = 1;
|
| 380 |
break;
|
| 381 |
case 'P': |
| 382 |
Pflag = 1;
|
| 383 |
pattern = parse_pattern(optarg); |
| 384 |
if (pattern < 0) |
| 385 |
return 0; |
| 386 |
break;
|
| 387 |
case 'q': |
| 388 |
qflag = 1;
|
| 389 |
break;
|
| 390 |
case 's': |
| 391 |
sflag = 1;
|
| 392 |
pattern_offset = cvtnum(optarg); |
| 393 |
if (pattern_offset < 0) { |
| 394 |
printf("non-numeric length argument -- %s\n", optarg);
|
| 395 |
return 0; |
| 396 |
} |
| 397 |
break;
|
| 398 |
case 'v': |
| 399 |
vflag = 1;
|
| 400 |
break;
|
| 401 |
default:
|
| 402 |
return command_usage(&read_cmd);
|
| 403 |
} |
| 404 |
} |
| 405 |
|
| 406 |
if (optind != argc - 2) |
| 407 |
return command_usage(&read_cmd);
|
| 408 |
|
| 409 |
if (bflag && pflag) {
|
| 410 |
printf("-b and -p cannot be specified at the same time\n");
|
| 411 |
return 0; |
| 412 |
} |
| 413 |
|
| 414 |
offset = cvtnum(argv[optind]); |
| 415 |
if (offset < 0) { |
| 416 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 417 |
return 0; |
| 418 |
} |
| 419 |
|
| 420 |
optind++; |
| 421 |
count = cvtnum(argv[optind]); |
| 422 |
if (count < 0) { |
| 423 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 424 |
return 0; |
| 425 |
} |
| 426 |
|
| 427 |
if (!Pflag && (lflag || sflag)) {
|
| 428 |
return command_usage(&read_cmd);
|
| 429 |
} |
| 430 |
|
| 431 |
if (!lflag) {
|
| 432 |
pattern_count = count - pattern_offset; |
| 433 |
} |
| 434 |
|
| 435 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
| 436 |
printf("pattern verfication range exceeds end of read data\n");
|
| 437 |
return 0; |
| 438 |
} |
| 439 |
|
| 440 |
if (!pflag)
|
| 441 |
if (offset & 0x1ff) { |
| 442 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 443 |
offset); |
| 444 |
return 0; |
| 445 |
|
| 446 |
if (count & 0x1ff) { |
| 447 |
printf("count %d is not sector aligned\n",
|
| 448 |
count); |
| 449 |
return 0; |
| 450 |
} |
| 451 |
} |
| 452 |
|
| 453 |
buf = qemu_io_alloc(count, 0xab);
|
| 454 |
|
| 455 |
gettimeofday(&t1, NULL);
|
| 456 |
if (pflag)
|
| 457 |
cnt = do_pread(buf, offset, count, &total); |
| 458 |
else if (bflag) |
| 459 |
cnt = do_load_vmstate(buf, offset, count, &total); |
| 460 |
else
|
| 461 |
cnt = do_read(buf, offset, count, &total); |
| 462 |
gettimeofday(&t2, NULL);
|
| 463 |
|
| 464 |
if (cnt < 0) { |
| 465 |
printf("read failed: %s\n", strerror(-cnt));
|
| 466 |
goto out;
|
| 467 |
} |
| 468 |
|
| 469 |
if (Pflag) {
|
| 470 |
void* cmp_buf = malloc(pattern_count);
|
| 471 |
memset(cmp_buf, pattern, pattern_count); |
| 472 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
| 473 |
printf("Pattern verification failed at offset %"
|
| 474 |
PRId64 ", %d bytes\n",
|
| 475 |
offset + pattern_offset, pattern_count); |
| 476 |
} |
| 477 |
free(cmp_buf); |
| 478 |
} |
| 479 |
|
| 480 |
if (qflag)
|
| 481 |
goto out;
|
| 482 |
|
| 483 |
if (vflag)
|
| 484 |
dump_buffer(buf, offset, count); |
| 485 |
|
| 486 |
/* Finally, report back -- -C gives a parsable format */
|
| 487 |
t2 = tsub(t2, t1); |
| 488 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
| 489 |
|
| 490 |
out:
|
| 491 |
qemu_io_free(buf); |
| 492 |
|
| 493 |
return 0; |
| 494 |
} |
| 495 |
|
| 496 |
static void |
| 497 |
readv_help(void)
|
| 498 |
{
|
| 499 |
printf( |
| 500 |
"\n"
|
| 501 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
| 502 |
"\n"
|
| 503 |
" Example:\n"
|
| 504 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
| 505 |
"\n"
|
| 506 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 507 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 508 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
| 509 |
" -C, -- report statistics in a machine parsable format\n"
|
| 510 |
" -P, -- use a pattern to verify read data\n"
|
| 511 |
" -v, -- dump buffer to standard output\n"
|
| 512 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 513 |
"\n");
|
| 514 |
} |
| 515 |
|
| 516 |
static int readv_f(int argc, char **argv); |
| 517 |
|
| 518 |
static const cmdinfo_t readv_cmd = { |
| 519 |
.name = "readv",
|
| 520 |
.cfunc = readv_f, |
| 521 |
.argmin = 2,
|
| 522 |
.argmax = -1,
|
| 523 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
| 524 |
.oneline = "reads a number of bytes at a specified offset",
|
| 525 |
.help = readv_help, |
| 526 |
}; |
| 527 |
|
| 528 |
static int |
| 529 |
readv_f(int argc, char **argv) |
| 530 |
{
|
| 531 |
struct timeval t1, t2;
|
| 532 |
int Cflag = 0, qflag = 0, vflag = 0; |
| 533 |
int c, cnt;
|
| 534 |
char *buf;
|
| 535 |
int64_t offset; |
| 536 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 537 |
int total = 0; |
| 538 |
int nr_iov;
|
| 539 |
QEMUIOVector qiov; |
| 540 |
int pattern = 0; |
| 541 |
int Pflag = 0; |
| 542 |
|
| 543 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 544 |
switch (c) {
|
| 545 |
case 'C': |
| 546 |
Cflag = 1;
|
| 547 |
break;
|
| 548 |
case 'P': |
| 549 |
Pflag = 1;
|
| 550 |
pattern = parse_pattern(optarg); |
| 551 |
if (pattern < 0) |
| 552 |
return 0; |
| 553 |
break;
|
| 554 |
case 'q': |
| 555 |
qflag = 1;
|
| 556 |
break;
|
| 557 |
case 'v': |
| 558 |
vflag = 1;
|
| 559 |
break;
|
| 560 |
default:
|
| 561 |
return command_usage(&readv_cmd);
|
| 562 |
} |
| 563 |
} |
| 564 |
|
| 565 |
if (optind > argc - 2) |
| 566 |
return command_usage(&readv_cmd);
|
| 567 |
|
| 568 |
|
| 569 |
offset = cvtnum(argv[optind]); |
| 570 |
if (offset < 0) { |
| 571 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 572 |
return 0; |
| 573 |
} |
| 574 |
optind++; |
| 575 |
|
| 576 |
if (offset & 0x1ff) { |
| 577 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 578 |
offset); |
| 579 |
return 0; |
| 580 |
} |
| 581 |
|
| 582 |
nr_iov = argc - optind; |
| 583 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
| 584 |
|
| 585 |
gettimeofday(&t1, NULL);
|
| 586 |
cnt = do_aio_readv(&qiov, offset, &total); |
| 587 |
gettimeofday(&t2, NULL);
|
| 588 |
|
| 589 |
if (cnt < 0) { |
| 590 |
printf("readv failed: %s\n", strerror(-cnt));
|
| 591 |
goto out;
|
| 592 |
} |
| 593 |
|
| 594 |
if (Pflag) {
|
| 595 |
void* cmp_buf = malloc(qiov.size);
|
| 596 |
memset(cmp_buf, pattern, qiov.size); |
| 597 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
| 598 |
printf("Pattern verification failed at offset %"
|
| 599 |
PRId64 ", %zd bytes\n",
|
| 600 |
offset, qiov.size); |
| 601 |
} |
| 602 |
free(cmp_buf); |
| 603 |
} |
| 604 |
|
| 605 |
if (qflag)
|
| 606 |
goto out;
|
| 607 |
|
| 608 |
if (vflag)
|
| 609 |
dump_buffer(buf, offset, qiov.size); |
| 610 |
|
| 611 |
/* Finally, report back -- -C gives a parsable format */
|
| 612 |
t2 = tsub(t2, t1); |
| 613 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
| 614 |
|
| 615 |
out:
|
| 616 |
qemu_io_free(buf); |
| 617 |
return 0; |
| 618 |
} |
| 619 |
|
| 620 |
static void |
| 621 |
write_help(void)
|
| 622 |
{
|
| 623 |
printf( |
| 624 |
"\n"
|
| 625 |
" writes a range of bytes from the given offset\n"
|
| 626 |
"\n"
|
| 627 |
" Example:\n"
|
| 628 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
| 629 |
"\n"
|
| 630 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 631 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 632 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
| 633 |
" -p, -- use bdrv_pwrite to write the file\n"
|
| 634 |
" -P, -- use different pattern to fill file\n"
|
| 635 |
" -C, -- report statistics in a machine parsable format\n"
|
| 636 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 637 |
"\n");
|
| 638 |
} |
| 639 |
|
| 640 |
static int write_f(int argc, char **argv); |
| 641 |
|
| 642 |
static const cmdinfo_t write_cmd = { |
| 643 |
.name = "write",
|
| 644 |
.altname = "w",
|
| 645 |
.cfunc = write_f, |
| 646 |
.argmin = 2,
|
| 647 |
.argmax = -1,
|
| 648 |
.args = "[-abCpq] [-P pattern ] off len",
|
| 649 |
.oneline = "writes a number of bytes at a specified offset",
|
| 650 |
.help = write_help, |
| 651 |
}; |
| 652 |
|
| 653 |
static int |
| 654 |
write_f(int argc, char **argv) |
| 655 |
{
|
| 656 |
struct timeval t1, t2;
|
| 657 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
| 658 |
int c, cnt;
|
| 659 |
char *buf;
|
| 660 |
int64_t offset; |
| 661 |
int count;
|
| 662 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 663 |
int total = 0; |
| 664 |
int pattern = 0xcd; |
| 665 |
|
| 666 |
while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
| 667 |
switch (c) {
|
| 668 |
case 'b': |
| 669 |
bflag = 1;
|
| 670 |
break;
|
| 671 |
case 'C': |
| 672 |
Cflag = 1;
|
| 673 |
break;
|
| 674 |
case 'p': |
| 675 |
pflag = 1;
|
| 676 |
break;
|
| 677 |
case 'P': |
| 678 |
pattern = parse_pattern(optarg); |
| 679 |
if (pattern < 0) |
| 680 |
return 0; |
| 681 |
break;
|
| 682 |
case 'q': |
| 683 |
qflag = 1;
|
| 684 |
break;
|
| 685 |
default:
|
| 686 |
return command_usage(&write_cmd);
|
| 687 |
} |
| 688 |
} |
| 689 |
|
| 690 |
if (optind != argc - 2) |
| 691 |
return command_usage(&write_cmd);
|
| 692 |
|
| 693 |
if (bflag && pflag) {
|
| 694 |
printf("-b and -p cannot be specified at the same time\n");
|
| 695 |
return 0; |
| 696 |
} |
| 697 |
|
| 698 |
offset = cvtnum(argv[optind]); |
| 699 |
if (offset < 0) { |
| 700 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 701 |
return 0; |
| 702 |
} |
| 703 |
|
| 704 |
optind++; |
| 705 |
count = cvtnum(argv[optind]); |
| 706 |
if (count < 0) { |
| 707 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 708 |
return 0; |
| 709 |
} |
| 710 |
|
| 711 |
if (!pflag) {
|
| 712 |
if (offset & 0x1ff) { |
| 713 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 714 |
offset); |
| 715 |
return 0; |
| 716 |
} |
| 717 |
|
| 718 |
if (count & 0x1ff) { |
| 719 |
printf("count %d is not sector aligned\n",
|
| 720 |
count); |
| 721 |
return 0; |
| 722 |
} |
| 723 |
} |
| 724 |
|
| 725 |
buf = qemu_io_alloc(count, pattern); |
| 726 |
|
| 727 |
gettimeofday(&t1, NULL);
|
| 728 |
if (pflag)
|
| 729 |
cnt = do_pwrite(buf, offset, count, &total); |
| 730 |
else if (bflag) |
| 731 |
cnt = do_save_vmstate(buf, offset, count, &total); |
| 732 |
else
|
| 733 |
cnt = do_write(buf, offset, count, &total); |
| 734 |
gettimeofday(&t2, NULL);
|
| 735 |
|
| 736 |
if (cnt < 0) { |
| 737 |
printf("write failed: %s\n", strerror(-cnt));
|
| 738 |
goto out;
|
| 739 |
} |
| 740 |
|
| 741 |
if (qflag)
|
| 742 |
goto out;
|
| 743 |
|
| 744 |
/* Finally, report back -- -C gives a parsable format */
|
| 745 |
t2 = tsub(t2, t1); |
| 746 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
| 747 |
|
| 748 |
out:
|
| 749 |
qemu_io_free(buf); |
| 750 |
|
| 751 |
return 0; |
| 752 |
} |
| 753 |
|
| 754 |
static void |
| 755 |
writev_help(void)
|
| 756 |
{
|
| 757 |
printf( |
| 758 |
"\n"
|
| 759 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
| 760 |
"\n"
|
| 761 |
" Example:\n"
|
| 762 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
| 763 |
"\n"
|
| 764 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 765 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 766 |
" -P, -- use different pattern to fill file\n"
|
| 767 |
" -C, -- report statistics in a machine parsable format\n"
|
| 768 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 769 |
"\n");
|
| 770 |
} |
| 771 |
|
| 772 |
static int writev_f(int argc, char **argv); |
| 773 |
|
| 774 |
static const cmdinfo_t writev_cmd = { |
| 775 |
.name = "writev",
|
| 776 |
.cfunc = writev_f, |
| 777 |
.argmin = 2,
|
| 778 |
.argmax = -1,
|
| 779 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
| 780 |
.oneline = "writes a number of bytes at a specified offset",
|
| 781 |
.help = writev_help, |
| 782 |
}; |
| 783 |
|
| 784 |
static int |
| 785 |
writev_f(int argc, char **argv) |
| 786 |
{
|
| 787 |
struct timeval t1, t2;
|
| 788 |
int Cflag = 0, qflag = 0; |
| 789 |
int c, cnt;
|
| 790 |
char *buf;
|
| 791 |
int64_t offset; |
| 792 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 793 |
int total = 0; |
| 794 |
int nr_iov;
|
| 795 |
int pattern = 0xcd; |
| 796 |
QEMUIOVector qiov; |
| 797 |
|
| 798 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 799 |
switch (c) {
|
| 800 |
case 'C': |
| 801 |
Cflag = 1;
|
| 802 |
break;
|
| 803 |
case 'q': |
| 804 |
qflag = 1;
|
| 805 |
break;
|
| 806 |
case 'P': |
| 807 |
pattern = parse_pattern(optarg); |
| 808 |
if (pattern < 0) |
| 809 |
return 0; |
| 810 |
break;
|
| 811 |
default:
|
| 812 |
return command_usage(&writev_cmd);
|
| 813 |
} |
| 814 |
} |
| 815 |
|
| 816 |
if (optind > argc - 2) |
| 817 |
return command_usage(&writev_cmd);
|
| 818 |
|
| 819 |
offset = cvtnum(argv[optind]); |
| 820 |
if (offset < 0) { |
| 821 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 822 |
return 0; |
| 823 |
} |
| 824 |
optind++; |
| 825 |
|
| 826 |
if (offset & 0x1ff) { |
| 827 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 828 |
offset); |
| 829 |
return 0; |
| 830 |
} |
| 831 |
|
| 832 |
nr_iov = argc - optind; |
| 833 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
| 834 |
|
| 835 |
gettimeofday(&t1, NULL);
|
| 836 |
cnt = do_aio_writev(&qiov, offset, &total); |
| 837 |
gettimeofday(&t2, NULL);
|
| 838 |
|
| 839 |
if (cnt < 0) { |
| 840 |
printf("writev failed: %s\n", strerror(-cnt));
|
| 841 |
goto out;
|
| 842 |
} |
| 843 |
|
| 844 |
if (qflag)
|
| 845 |
goto out;
|
| 846 |
|
| 847 |
/* Finally, report back -- -C gives a parsable format */
|
| 848 |
t2 = tsub(t2, t1); |
| 849 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
| 850 |
out:
|
| 851 |
qemu_io_free(buf); |
| 852 |
return 0; |
| 853 |
} |
| 854 |
|
| 855 |
static void |
| 856 |
multiwrite_help(void)
|
| 857 |
{
|
| 858 |
printf( |
| 859 |
"\n"
|
| 860 |
" writes a range of bytes from the given offset source from multiple buffers,\n"
|
| 861 |
" in a batch of requests that may be merged by qemu\n"
|
| 862 |
"\n"
|
| 863 |
" Example:\n"
|
| 864 |
" 'multiwrite 512 1k 1k ; 4k 1k' \n"
|
| 865 |
" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
| 866 |
"\n"
|
| 867 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 868 |
" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
| 869 |
" by one for each request contained in the multiwrite command.\n"
|
| 870 |
" -P, -- use different pattern to fill file\n"
|
| 871 |
" -C, -- report statistics in a machine parsable format\n"
|
| 872 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
| 873 |
"\n");
|
| 874 |
} |
| 875 |
|
| 876 |
static int multiwrite_f(int argc, char **argv); |
| 877 |
|
| 878 |
static const cmdinfo_t multiwrite_cmd = { |
| 879 |
.name = "multiwrite",
|
| 880 |
.cfunc = multiwrite_f, |
| 881 |
.argmin = 2,
|
| 882 |
.argmax = -1,
|
| 883 |
.args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
| 884 |
.oneline = "issues multiple write requests at once",
|
| 885 |
.help = multiwrite_help, |
| 886 |
}; |
| 887 |
|
| 888 |
static int |
| 889 |
multiwrite_f(int argc, char **argv) |
| 890 |
{
|
| 891 |
struct timeval t1, t2;
|
| 892 |
int Cflag = 0, qflag = 0; |
| 893 |
int c, cnt;
|
| 894 |
char **buf;
|
| 895 |
int64_t offset, first_offset = 0;
|
| 896 |
/* Some compilers get confused and warn if this is not initialized. */
|
| 897 |
int total = 0; |
| 898 |
int nr_iov;
|
| 899 |
int nr_reqs;
|
| 900 |
int pattern = 0xcd; |
| 901 |
QEMUIOVector *qiovs; |
| 902 |
int i;
|
| 903 |
BlockRequest *reqs; |
| 904 |
|
| 905 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 906 |
switch (c) {
|
| 907 |
case 'C': |
| 908 |
Cflag = 1;
|
| 909 |
break;
|
| 910 |
case 'q': |
| 911 |
qflag = 1;
|
| 912 |
break;
|
| 913 |
case 'P': |
| 914 |
pattern = parse_pattern(optarg); |
| 915 |
if (pattern < 0) |
| 916 |
return 0; |
| 917 |
break;
|
| 918 |
default:
|
| 919 |
return command_usage(&writev_cmd);
|
| 920 |
} |
| 921 |
} |
| 922 |
|
| 923 |
if (optind > argc - 2) |
| 924 |
return command_usage(&writev_cmd);
|
| 925 |
|
| 926 |
nr_reqs = 1;
|
| 927 |
for (i = optind; i < argc; i++) {
|
| 928 |
if (!strcmp(argv[i], ";")) { |
| 929 |
nr_reqs++; |
| 930 |
} |
| 931 |
} |
| 932 |
|
| 933 |
reqs = qemu_malloc(nr_reqs * sizeof(*reqs));
|
| 934 |
buf = qemu_malloc(nr_reqs * sizeof(*buf));
|
| 935 |
qiovs = qemu_malloc(nr_reqs * sizeof(*qiovs));
|
| 936 |
|
| 937 |
for (i = 0; i < nr_reqs; i++) { |
| 938 |
int j;
|
| 939 |
|
| 940 |
/* Read the offset of the request */
|
| 941 |
offset = cvtnum(argv[optind]); |
| 942 |
if (offset < 0) { |
| 943 |
printf("non-numeric offset argument -- %s\n", argv[optind]);
|
| 944 |
return 0; |
| 945 |
} |
| 946 |
optind++; |
| 947 |
|
| 948 |
if (offset & 0x1ff) { |
| 949 |
printf("offset %lld is not sector aligned\n",
|
| 950 |
(long long)offset); |
| 951 |
return 0; |
| 952 |
} |
| 953 |
|
| 954 |
if (i == 0) { |
| 955 |
first_offset = offset; |
| 956 |
} |
| 957 |
|
| 958 |
/* Read lengths for qiov entries */
|
| 959 |
for (j = optind; j < argc; j++) {
|
| 960 |
if (!strcmp(argv[j], ";")) { |
| 961 |
break;
|
| 962 |
} |
| 963 |
} |
| 964 |
|
| 965 |
nr_iov = j - optind; |
| 966 |
|
| 967 |
/* Build request */
|
| 968 |
reqs[i].qiov = &qiovs[i]; |
| 969 |
buf[i] = create_iovec(reqs[i].qiov, &argv[optind], nr_iov, pattern); |
| 970 |
reqs[i].sector = offset >> 9;
|
| 971 |
reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
| 972 |
|
| 973 |
optind = j + 1;
|
| 974 |
|
| 975 |
offset += reqs[i].qiov->size; |
| 976 |
pattern++; |
| 977 |
} |
| 978 |
|
| 979 |
gettimeofday(&t1, NULL);
|
| 980 |
cnt = do_aio_multiwrite(reqs, nr_reqs, &total); |
| 981 |
gettimeofday(&t2, NULL);
|
| 982 |
|
| 983 |
if (cnt < 0) { |
| 984 |
printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
| 985 |
goto out;
|
| 986 |
} |
| 987 |
|
| 988 |
if (qflag)
|
| 989 |
goto out;
|
| 990 |
|
| 991 |
/* Finally, report back -- -C gives a parsable format */
|
| 992 |
t2 = tsub(t2, t1); |
| 993 |
print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
| 994 |
out:
|
| 995 |
for (i = 0; i < nr_reqs; i++) { |
| 996 |
qemu_io_free(buf[i]); |
| 997 |
qemu_iovec_destroy(&qiovs[i]); |
| 998 |
} |
| 999 |
qemu_free(buf); |
| 1000 |
qemu_free(reqs); |
| 1001 |
qemu_free(qiovs); |
| 1002 |
return 0; |
| 1003 |
} |
| 1004 |
|
| 1005 |
struct aio_ctx {
|
| 1006 |
QEMUIOVector qiov; |
| 1007 |
int64_t offset; |
| 1008 |
char *buf;
|
| 1009 |
int qflag;
|
| 1010 |
int vflag;
|
| 1011 |
int Cflag;
|
| 1012 |
int Pflag;
|
| 1013 |
int pattern;
|
| 1014 |
struct timeval t1;
|
| 1015 |
}; |
| 1016 |
|
| 1017 |
static void |
| 1018 |
aio_write_done(void *opaque, int ret) |
| 1019 |
{
|
| 1020 |
struct aio_ctx *ctx = opaque;
|
| 1021 |
struct timeval t2;
|
| 1022 |
|
| 1023 |
gettimeofday(&t2, NULL);
|
| 1024 |
|
| 1025 |
|
| 1026 |
if (ret < 0) { |
| 1027 |
printf("aio_write failed: %s\n", strerror(-ret));
|
| 1028 |
goto out;
|
| 1029 |
} |
| 1030 |
|
| 1031 |
if (ctx->qflag) {
|
| 1032 |
goto out;
|
| 1033 |
} |
| 1034 |
|
| 1035 |
/* Finally, report back -- -C gives a parsable format */
|
| 1036 |
t2 = tsub(t2, ctx->t1); |
| 1037 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
| 1038 |
ctx->qiov.size, 1, ctx->Cflag);
|
| 1039 |
out:
|
| 1040 |
qemu_io_free(ctx->buf); |
| 1041 |
free(ctx); |
| 1042 |
} |
| 1043 |
|
| 1044 |
static void |
| 1045 |
aio_read_done(void *opaque, int ret) |
| 1046 |
{
|
| 1047 |
struct aio_ctx *ctx = opaque;
|
| 1048 |
struct timeval t2;
|
| 1049 |
|
| 1050 |
gettimeofday(&t2, NULL);
|
| 1051 |
|
| 1052 |
if (ret < 0) { |
| 1053 |
printf("readv failed: %s\n", strerror(-ret));
|
| 1054 |
goto out;
|
| 1055 |
} |
| 1056 |
|
| 1057 |
if (ctx->Pflag) {
|
| 1058 |
void *cmp_buf = malloc(ctx->qiov.size);
|
| 1059 |
|
| 1060 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
| 1061 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
| 1062 |
printf("Pattern verification failed at offset %"
|
| 1063 |
PRId64 ", %zd bytes\n",
|
| 1064 |
ctx->offset, ctx->qiov.size); |
| 1065 |
} |
| 1066 |
free(cmp_buf); |
| 1067 |
} |
| 1068 |
|
| 1069 |
if (ctx->qflag) {
|
| 1070 |
goto out;
|
| 1071 |
} |
| 1072 |
|
| 1073 |
if (ctx->vflag) {
|
| 1074 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
| 1075 |
} |
| 1076 |
|
| 1077 |
/* Finally, report back -- -C gives a parsable format */
|
| 1078 |
t2 = tsub(t2, ctx->t1); |
| 1079 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
| 1080 |
ctx->qiov.size, 1, ctx->Cflag);
|
| 1081 |
out:
|
| 1082 |
qemu_io_free(ctx->buf); |
| 1083 |
free(ctx); |
| 1084 |
} |
| 1085 |
|
| 1086 |
static void |
| 1087 |
aio_read_help(void)
|
| 1088 |
{
|
| 1089 |
printf( |
| 1090 |
"\n"
|
| 1091 |
" asynchronously reads a range of bytes from the given offset\n"
|
| 1092 |
"\n"
|
| 1093 |
" Example:\n"
|
| 1094 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
| 1095 |
"\n"
|
| 1096 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
| 1097 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
| 1098 |
" The read is performed asynchronously and the aio_flush command must be\n"
|
| 1099 |
" used to ensure all outstanding aio requests have been completed\n"
|
| 1100 |
" -C, -- report statistics in a machine parsable format\n"
|
| 1101 |
" -P, -- use a pattern to verify read data\n"
|
| 1102 |
" -v, -- dump buffer to standard output\n"
|
| 1103 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 1104 |
"\n");
|
| 1105 |
} |
| 1106 |
|
| 1107 |
static int aio_read_f(int argc, char **argv); |
| 1108 |
|
| 1109 |
static const cmdinfo_t aio_read_cmd = { |
| 1110 |
.name = "aio_read",
|
| 1111 |
.cfunc = aio_read_f, |
| 1112 |
.argmin = 2,
|
| 1113 |
.argmax = -1,
|
| 1114 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
| 1115 |
.oneline = "asynchronously reads a number of bytes",
|
| 1116 |
.help = aio_read_help, |
| 1117 |
}; |
| 1118 |
|
| 1119 |
static int |
| 1120 |
aio_read_f(int argc, char **argv) |
| 1121 |
{
|
| 1122 |
int nr_iov, c;
|
| 1123 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
| 1124 |
BlockDriverAIOCB *acb; |
| 1125 |
|
| 1126 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
| 1127 |
switch (c) {
|
| 1128 |
case 'C': |
| 1129 |
ctx->Cflag = 1;
|
| 1130 |
break;
|
| 1131 |
case 'P': |
| 1132 |
ctx->Pflag = 1;
|
| 1133 |
ctx->pattern = parse_pattern(optarg); |
| 1134 |
if (ctx->pattern < 0) |
| 1135 |
return 0; |
| 1136 |
break;
|
| 1137 |
case 'q': |
| 1138 |
ctx->qflag = 1;
|
| 1139 |
break;
|
| 1140 |
case 'v': |
| 1141 |
ctx->vflag = 1;
|
| 1142 |
break;
|
| 1143 |
default:
|
| 1144 |
free(ctx); |
| 1145 |
return command_usage(&aio_read_cmd);
|
| 1146 |
} |
| 1147 |
} |
| 1148 |
|
| 1149 |
if (optind > argc - 2) { |
| 1150 |
free(ctx); |
| 1151 |
return command_usage(&aio_read_cmd);
|
| 1152 |
} |
| 1153 |
|
| 1154 |
ctx->offset = cvtnum(argv[optind]); |
| 1155 |
if (ctx->offset < 0) { |
| 1156 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 1157 |
free(ctx); |
| 1158 |
return 0; |
| 1159 |
} |
| 1160 |
optind++; |
| 1161 |
|
| 1162 |
if (ctx->offset & 0x1ff) { |
| 1163 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 1164 |
ctx->offset); |
| 1165 |
free(ctx); |
| 1166 |
return 0; |
| 1167 |
} |
| 1168 |
|
| 1169 |
nr_iov = argc - optind; |
| 1170 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
| 1171 |
|
| 1172 |
gettimeofday(&ctx->t1, NULL);
|
| 1173 |
acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
| 1174 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
| 1175 |
if (!acb) {
|
| 1176 |
free(ctx->buf); |
| 1177 |
free(ctx); |
| 1178 |
return -EIO;
|
| 1179 |
} |
| 1180 |
|
| 1181 |
return 0; |
| 1182 |
} |
| 1183 |
|
| 1184 |
static void |
| 1185 |
aio_write_help(void)
|
| 1186 |
{
|
| 1187 |
printf( |
| 1188 |
"\n"
|
| 1189 |
" asynchronously writes a range of bytes from the given offset source \n"
|
| 1190 |
" from multiple buffers\n"
|
| 1191 |
"\n"
|
| 1192 |
" Example:\n"
|
| 1193 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
| 1194 |
"\n"
|
| 1195 |
" Writes into a segment of the currently open file, using a buffer\n"
|
| 1196 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
| 1197 |
" The write is performed asynchronously and the aio_flush command must be\n"
|
| 1198 |
" used to ensure all outstanding aio requests have been completed\n"
|
| 1199 |
" -P, -- use different pattern to fill file\n"
|
| 1200 |
" -C, -- report statistics in a machine parsable format\n"
|
| 1201 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 1202 |
"\n");
|
| 1203 |
} |
| 1204 |
|
| 1205 |
static int aio_write_f(int argc, char **argv); |
| 1206 |
|
| 1207 |
static const cmdinfo_t aio_write_cmd = { |
| 1208 |
.name = "aio_write",
|
| 1209 |
.cfunc = aio_write_f, |
| 1210 |
.argmin = 2,
|
| 1211 |
.argmax = -1,
|
| 1212 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
| 1213 |
.oneline = "asynchronously writes a number of bytes",
|
| 1214 |
.help = aio_write_help, |
| 1215 |
}; |
| 1216 |
|
| 1217 |
static int |
| 1218 |
aio_write_f(int argc, char **argv) |
| 1219 |
{
|
| 1220 |
int nr_iov, c;
|
| 1221 |
int pattern = 0xcd; |
| 1222 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
| 1223 |
BlockDriverAIOCB *acb; |
| 1224 |
|
| 1225 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
| 1226 |
switch (c) {
|
| 1227 |
case 'C': |
| 1228 |
ctx->Cflag = 1;
|
| 1229 |
break;
|
| 1230 |
case 'q': |
| 1231 |
ctx->qflag = 1;
|
| 1232 |
break;
|
| 1233 |
case 'P': |
| 1234 |
pattern = parse_pattern(optarg); |
| 1235 |
if (pattern < 0) |
| 1236 |
return 0; |
| 1237 |
break;
|
| 1238 |
default:
|
| 1239 |
free(ctx); |
| 1240 |
return command_usage(&aio_write_cmd);
|
| 1241 |
} |
| 1242 |
} |
| 1243 |
|
| 1244 |
if (optind > argc - 2) { |
| 1245 |
free(ctx); |
| 1246 |
return command_usage(&aio_write_cmd);
|
| 1247 |
} |
| 1248 |
|
| 1249 |
ctx->offset = cvtnum(argv[optind]); |
| 1250 |
if (ctx->offset < 0) { |
| 1251 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 1252 |
free(ctx); |
| 1253 |
return 0; |
| 1254 |
} |
| 1255 |
optind++; |
| 1256 |
|
| 1257 |
if (ctx->offset & 0x1ff) { |
| 1258 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 1259 |
ctx->offset); |
| 1260 |
free(ctx); |
| 1261 |
return 0; |
| 1262 |
} |
| 1263 |
|
| 1264 |
nr_iov = argc - optind; |
| 1265 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
| 1266 |
|
| 1267 |
gettimeofday(&ctx->t1, NULL);
|
| 1268 |
acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
| 1269 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
| 1270 |
if (!acb) {
|
| 1271 |
free(ctx->buf); |
| 1272 |
free(ctx); |
| 1273 |
return -EIO;
|
| 1274 |
} |
| 1275 |
|
| 1276 |
return 0; |
| 1277 |
} |
| 1278 |
|
| 1279 |
static int |
| 1280 |
aio_flush_f(int argc, char **argv) |
| 1281 |
{
|
| 1282 |
qemu_aio_flush(); |
| 1283 |
return 0; |
| 1284 |
} |
| 1285 |
|
| 1286 |
static const cmdinfo_t aio_flush_cmd = { |
| 1287 |
.name = "aio_flush",
|
| 1288 |
.cfunc = aio_flush_f, |
| 1289 |
.oneline = "completes all outstanding aio requests"
|
| 1290 |
}; |
| 1291 |
|
| 1292 |
static int |
| 1293 |
flush_f(int argc, char **argv) |
| 1294 |
{
|
| 1295 |
bdrv_flush(bs); |
| 1296 |
return 0; |
| 1297 |
} |
| 1298 |
|
| 1299 |
static const cmdinfo_t flush_cmd = { |
| 1300 |
.name = "flush",
|
| 1301 |
.altname = "f",
|
| 1302 |
.cfunc = flush_f, |
| 1303 |
.oneline = "flush all in-core file state to disk",
|
| 1304 |
}; |
| 1305 |
|
| 1306 |
static int |
| 1307 |
truncate_f(int argc, char **argv) |
| 1308 |
{
|
| 1309 |
int64_t offset; |
| 1310 |
int ret;
|
| 1311 |
|
| 1312 |
offset = cvtnum(argv[1]);
|
| 1313 |
if (offset < 0) { |
| 1314 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
| 1315 |
return 0; |
| 1316 |
} |
| 1317 |
|
| 1318 |
ret = bdrv_truncate(bs, offset); |
| 1319 |
if (ret < 0) { |
| 1320 |
printf("truncate: %s\n", strerror(-ret));
|
| 1321 |
return 0; |
| 1322 |
} |
| 1323 |
|
| 1324 |
return 0; |
| 1325 |
} |
| 1326 |
|
| 1327 |
static const cmdinfo_t truncate_cmd = { |
| 1328 |
.name = "truncate",
|
| 1329 |
.altname = "t",
|
| 1330 |
.cfunc = truncate_f, |
| 1331 |
.argmin = 1,
|
| 1332 |
.argmax = 1,
|
| 1333 |
.args = "off",
|
| 1334 |
.oneline = "truncates the current file at the given offset",
|
| 1335 |
}; |
| 1336 |
|
| 1337 |
static int |
| 1338 |
length_f(int argc, char **argv) |
| 1339 |
{
|
| 1340 |
int64_t size; |
| 1341 |
char s1[64]; |
| 1342 |
|
| 1343 |
size = bdrv_getlength(bs); |
| 1344 |
if (size < 0) { |
| 1345 |
printf("getlength: %s\n", strerror(-size));
|
| 1346 |
return 0; |
| 1347 |
} |
| 1348 |
|
| 1349 |
cvtstr(size, s1, sizeof(s1));
|
| 1350 |
printf("%s\n", s1);
|
| 1351 |
return 0; |
| 1352 |
} |
| 1353 |
|
| 1354 |
|
| 1355 |
static const cmdinfo_t length_cmd = { |
| 1356 |
.name = "length",
|
| 1357 |
.altname = "l",
|
| 1358 |
.cfunc = length_f, |
| 1359 |
.oneline = "gets the length of the current file",
|
| 1360 |
}; |
| 1361 |
|
| 1362 |
|
| 1363 |
static int |
| 1364 |
info_f(int argc, char **argv) |
| 1365 |
{
|
| 1366 |
BlockDriverInfo bdi; |
| 1367 |
char s1[64], s2[64]; |
| 1368 |
int ret;
|
| 1369 |
|
| 1370 |
if (bs->drv && bs->drv->format_name)
|
| 1371 |
printf("format name: %s\n", bs->drv->format_name);
|
| 1372 |
if (bs->drv && bs->drv->protocol_name)
|
| 1373 |
printf("format name: %s\n", bs->drv->protocol_name);
|
| 1374 |
|
| 1375 |
ret = bdrv_get_info(bs, &bdi); |
| 1376 |
if (ret)
|
| 1377 |
return 0; |
| 1378 |
|
| 1379 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
| 1380 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
| 1381 |
|
| 1382 |
printf("cluster size: %s\n", s1);
|
| 1383 |
printf("vm state offset: %s\n", s2);
|
| 1384 |
|
| 1385 |
return 0; |
| 1386 |
} |
| 1387 |
|
| 1388 |
|
| 1389 |
|
| 1390 |
static const cmdinfo_t info_cmd = { |
| 1391 |
.name = "info",
|
| 1392 |
.altname = "i",
|
| 1393 |
.cfunc = info_f, |
| 1394 |
.oneline = "prints information about the current file",
|
| 1395 |
}; |
| 1396 |
|
| 1397 |
static void |
| 1398 |
discard_help(void)
|
| 1399 |
{
|
| 1400 |
printf( |
| 1401 |
"\n"
|
| 1402 |
" discards a range of bytes from the given offset\n"
|
| 1403 |
"\n"
|
| 1404 |
" Example:\n"
|
| 1405 |
" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
|
| 1406 |
"\n"
|
| 1407 |
" Discards a segment of the currently open file.\n"
|
| 1408 |
" -C, -- report statistics in a machine parsable format\n"
|
| 1409 |
" -q, -- quite mode, do not show I/O statistics\n"
|
| 1410 |
"\n");
|
| 1411 |
} |
| 1412 |
|
| 1413 |
static int discard_f(int argc, char **argv); |
| 1414 |
|
| 1415 |
static const cmdinfo_t discard_cmd = { |
| 1416 |
.name = "discard",
|
| 1417 |
.altname = "d",
|
| 1418 |
.cfunc = discard_f, |
| 1419 |
.argmin = 2,
|
| 1420 |
.argmax = -1,
|
| 1421 |
.args = "[-Cq] off len",
|
| 1422 |
.oneline = "discards a number of bytes at a specified offset",
|
| 1423 |
.help = discard_help, |
| 1424 |
}; |
| 1425 |
|
| 1426 |
static int |
| 1427 |
discard_f(int argc, char **argv) |
| 1428 |
{
|
| 1429 |
struct timeval t1, t2;
|
| 1430 |
int Cflag = 0, qflag = 0; |
| 1431 |
int c, ret;
|
| 1432 |
int64_t offset; |
| 1433 |
int count;
|
| 1434 |
|
| 1435 |
while ((c = getopt(argc, argv, "Cq")) != EOF) { |
| 1436 |
switch (c) {
|
| 1437 |
case 'C': |
| 1438 |
Cflag = 1;
|
| 1439 |
break;
|
| 1440 |
case 'q': |
| 1441 |
qflag = 1;
|
| 1442 |
break;
|
| 1443 |
default:
|
| 1444 |
return command_usage(&discard_cmd);
|
| 1445 |
} |
| 1446 |
} |
| 1447 |
|
| 1448 |
if (optind != argc - 2) { |
| 1449 |
return command_usage(&discard_cmd);
|
| 1450 |
} |
| 1451 |
|
| 1452 |
offset = cvtnum(argv[optind]); |
| 1453 |
if (offset < 0) { |
| 1454 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 1455 |
return 0; |
| 1456 |
} |
| 1457 |
|
| 1458 |
optind++; |
| 1459 |
count = cvtnum(argv[optind]); |
| 1460 |
if (count < 0) { |
| 1461 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
| 1462 |
return 0; |
| 1463 |
} |
| 1464 |
|
| 1465 |
gettimeofday(&t1, NULL);
|
| 1466 |
ret = bdrv_discard(bs, offset, count); |
| 1467 |
gettimeofday(&t2, NULL);
|
| 1468 |
|
| 1469 |
if (ret < 0) { |
| 1470 |
printf("discard failed: %s\n", strerror(-ret));
|
| 1471 |
goto out;
|
| 1472 |
} |
| 1473 |
|
| 1474 |
/* Finally, report back -- -C gives a parsable format */
|
| 1475 |
if (!qflag) {
|
| 1476 |
t2 = tsub(t2, t1); |
| 1477 |
print_report("discard", &t2, offset, count, count, 1, Cflag); |
| 1478 |
} |
| 1479 |
|
| 1480 |
out:
|
| 1481 |
return 0; |
| 1482 |
} |
| 1483 |
|
| 1484 |
static int |
| 1485 |
alloc_f(int argc, char **argv) |
| 1486 |
{
|
| 1487 |
int64_t offset; |
| 1488 |
int nb_sectors, remaining;
|
| 1489 |
char s1[64]; |
| 1490 |
int num, sum_alloc;
|
| 1491 |
int ret;
|
| 1492 |
|
| 1493 |
offset = cvtnum(argv[1]);
|
| 1494 |
if (offset & 0x1ff) { |
| 1495 |
printf("offset %" PRId64 " is not sector aligned\n", |
| 1496 |
offset); |
| 1497 |
return 0; |
| 1498 |
} |
| 1499 |
|
| 1500 |
if (argc == 3) |
| 1501 |
nb_sectors = cvtnum(argv[2]);
|
| 1502 |
else
|
| 1503 |
nb_sectors = 1;
|
| 1504 |
|
| 1505 |
remaining = nb_sectors; |
| 1506 |
sum_alloc = 0;
|
| 1507 |
while (remaining) {
|
| 1508 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
| 1509 |
remaining -= num; |
| 1510 |
if (ret) {
|
| 1511 |
sum_alloc += num; |
| 1512 |
} |
| 1513 |
} |
| 1514 |
|
| 1515 |
cvtstr(offset, s1, sizeof(s1));
|
| 1516 |
|
| 1517 |
printf("%d/%d sectors allocated at offset %s\n",
|
| 1518 |
sum_alloc, nb_sectors, s1); |
| 1519 |
return 0; |
| 1520 |
} |
| 1521 |
|
| 1522 |
static const cmdinfo_t alloc_cmd = { |
| 1523 |
.name = "alloc",
|
| 1524 |
.altname = "a",
|
| 1525 |
.argmin = 1,
|
| 1526 |
.argmax = 2,
|
| 1527 |
.cfunc = alloc_f, |
| 1528 |
.args = "off [sectors]",
|
| 1529 |
.oneline = "checks if a sector is present in the file",
|
| 1530 |
}; |
| 1531 |
|
| 1532 |
static int |
| 1533 |
map_f(int argc, char **argv) |
| 1534 |
{
|
| 1535 |
int64_t offset; |
| 1536 |
int64_t nb_sectors; |
| 1537 |
char s1[64]; |
| 1538 |
int num, num_checked;
|
| 1539 |
int ret;
|
| 1540 |
const char *retstr; |
| 1541 |
|
| 1542 |
offset = 0;
|
| 1543 |
nb_sectors = bs->total_sectors; |
| 1544 |
|
| 1545 |
do {
|
| 1546 |
num_checked = MIN(nb_sectors, INT_MAX); |
| 1547 |
ret = bdrv_is_allocated(bs, offset, num_checked, &num); |
| 1548 |
retstr = ret ? " allocated" : "not allocated"; |
| 1549 |
cvtstr(offset << 9ULL, s1, sizeof(s1)); |
| 1550 |
printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n", |
| 1551 |
offset << 9ULL, num, num_checked, retstr, s1, ret);
|
| 1552 |
|
| 1553 |
offset += num; |
| 1554 |
nb_sectors -= num; |
| 1555 |
} while(offset < bs->total_sectors);
|
| 1556 |
|
| 1557 |
return 0; |
| 1558 |
} |
| 1559 |
|
| 1560 |
static const cmdinfo_t map_cmd = { |
| 1561 |
.name = "map",
|
| 1562 |
.argmin = 0,
|
| 1563 |
.argmax = 0,
|
| 1564 |
.cfunc = map_f, |
| 1565 |
.args = "",
|
| 1566 |
.oneline = "prints the allocated areas of a file",
|
| 1567 |
}; |
| 1568 |
|
| 1569 |
|
| 1570 |
static int |
| 1571 |
close_f(int argc, char **argv) |
| 1572 |
{
|
| 1573 |
bdrv_close(bs); |
| 1574 |
bs = NULL;
|
| 1575 |
return 0; |
| 1576 |
} |
| 1577 |
|
| 1578 |
static const cmdinfo_t close_cmd = { |
| 1579 |
.name = "close",
|
| 1580 |
.altname = "c",
|
| 1581 |
.cfunc = close_f, |
| 1582 |
.oneline = "close the current open file",
|
| 1583 |
}; |
| 1584 |
|
| 1585 |
static int openfile(char *name, int flags, int growable) |
| 1586 |
{
|
| 1587 |
if (bs) {
|
| 1588 |
fprintf(stderr, "file open already, try 'help close'\n");
|
| 1589 |
return 1; |
| 1590 |
} |
| 1591 |
|
| 1592 |
if (growable) {
|
| 1593 |
if (bdrv_file_open(&bs, name, flags)) {
|
| 1594 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
| 1595 |
return 1; |
| 1596 |
} |
| 1597 |
} else {
|
| 1598 |
bs = bdrv_new("hda");
|
| 1599 |
|
| 1600 |
if (bdrv_open(bs, name, flags, NULL) < 0) { |
| 1601 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
| 1602 |
bs = NULL;
|
| 1603 |
return 1; |
| 1604 |
} |
| 1605 |
} |
| 1606 |
|
| 1607 |
return 0; |
| 1608 |
} |
| 1609 |
|
| 1610 |
static void |
| 1611 |
open_help(void)
|
| 1612 |
{
|
| 1613 |
printf( |
| 1614 |
"\n"
|
| 1615 |
" opens a new file in the requested mode\n"
|
| 1616 |
"\n"
|
| 1617 |
" Example:\n"
|
| 1618 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
| 1619 |
"\n"
|
| 1620 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
| 1621 |
" -r, -- open file read-only\n"
|
| 1622 |
" -s, -- use snapshot file\n"
|
| 1623 |
" -n, -- disable host cache\n"
|
| 1624 |
" -g, -- allow file to grow (only applies to protocols)"
|
| 1625 |
"\n");
|
| 1626 |
} |
| 1627 |
|
| 1628 |
static int open_f(int argc, char **argv); |
| 1629 |
|
| 1630 |
static const cmdinfo_t open_cmd = { |
| 1631 |
.name = "open",
|
| 1632 |
.altname = "o",
|
| 1633 |
.cfunc = open_f, |
| 1634 |
.argmin = 1,
|
| 1635 |
.argmax = -1,
|
| 1636 |
.flags = CMD_NOFILE_OK, |
| 1637 |
.args = "[-Crsn] [path]",
|
| 1638 |
.oneline = "open the file specified by path",
|
| 1639 |
.help = open_help, |
| 1640 |
}; |
| 1641 |
|
| 1642 |
static int |
| 1643 |
open_f(int argc, char **argv) |
| 1644 |
{
|
| 1645 |
int flags = 0; |
| 1646 |
int readonly = 0; |
| 1647 |
int growable = 0; |
| 1648 |
int c;
|
| 1649 |
|
| 1650 |
while ((c = getopt(argc, argv, "snrg")) != EOF) { |
| 1651 |
switch (c) {
|
| 1652 |
case 's': |
| 1653 |
flags |= BDRV_O_SNAPSHOT; |
| 1654 |
break;
|
| 1655 |
case 'n': |
| 1656 |
flags |= BDRV_O_NOCACHE; |
| 1657 |
break;
|
| 1658 |
case 'r': |
| 1659 |
readonly = 1;
|
| 1660 |
break;
|
| 1661 |
case 'g': |
| 1662 |
growable = 1;
|
| 1663 |
break;
|
| 1664 |
default:
|
| 1665 |
return command_usage(&open_cmd);
|
| 1666 |
} |
| 1667 |
} |
| 1668 |
|
| 1669 |
if (!readonly) {
|
| 1670 |
flags |= BDRV_O_RDWR; |
| 1671 |
} |
| 1672 |
|
| 1673 |
if (optind != argc - 1) |
| 1674 |
return command_usage(&open_cmd);
|
| 1675 |
|
| 1676 |
return openfile(argv[optind], flags, growable);
|
| 1677 |
} |
| 1678 |
|
| 1679 |
static int |
| 1680 |
init_args_command( |
| 1681 |
int index)
|
| 1682 |
{
|
| 1683 |
/* only one device allowed so far */
|
| 1684 |
if (index >= 1) |
| 1685 |
return 0; |
| 1686 |
return ++index;
|
| 1687 |
} |
| 1688 |
|
| 1689 |
static int |
| 1690 |
init_check_command( |
| 1691 |
const cmdinfo_t *ct)
|
| 1692 |
{
|
| 1693 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
| 1694 |
return 1; |
| 1695 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
| 1696 |
fprintf(stderr, "no file open, try 'help open'\n");
|
| 1697 |
return 0; |
| 1698 |
} |
| 1699 |
return 1; |
| 1700 |
} |
| 1701 |
|
| 1702 |
static void usage(const char *name) |
| 1703 |
{
|
| 1704 |
printf( |
| 1705 |
"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
|
| 1706 |
"QEMU Disk exerciser\n"
|
| 1707 |
"\n"
|
| 1708 |
" -c, --cmd command to execute\n"
|
| 1709 |
" -r, --read-only export read-only\n"
|
| 1710 |
" -s, --snapshot use snapshot file\n"
|
| 1711 |
" -n, --nocache disable host cache\n"
|
| 1712 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
| 1713 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
| 1714 |
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
| 1715 |
" -h, --help display this help and exit\n"
|
| 1716 |
" -V, --version output version information and exit\n"
|
| 1717 |
"\n",
|
| 1718 |
name); |
| 1719 |
} |
| 1720 |
|
| 1721 |
|
| 1722 |
int main(int argc, char **argv) |
| 1723 |
{
|
| 1724 |
int readonly = 0; |
| 1725 |
int growable = 0; |
| 1726 |
const char *sopt = "hVc:rsnmgk"; |
| 1727 |
const struct option lopt[] = { |
| 1728 |
{ "help", 0, NULL, 'h' },
|
| 1729 |
{ "version", 0, NULL, 'V' },
|
| 1730 |
{ "offset", 1, NULL, 'o' },
|
| 1731 |
{ "cmd", 1, NULL, 'c' },
|
| 1732 |
{ "read-only", 0, NULL, 'r' },
|
| 1733 |
{ "snapshot", 0, NULL, 's' },
|
| 1734 |
{ "nocache", 0, NULL, 'n' },
|
| 1735 |
{ "misalign", 0, NULL, 'm' },
|
| 1736 |
{ "growable", 0, NULL, 'g' },
|
| 1737 |
{ "native-aio", 0, NULL, 'k' },
|
| 1738 |
{ NULL, 0, NULL, 0 }
|
| 1739 |
}; |
| 1740 |
int c;
|
| 1741 |
int opt_index = 0; |
| 1742 |
int flags = 0; |
| 1743 |
|
| 1744 |
progname = basename(argv[0]);
|
| 1745 |
|
| 1746 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
| 1747 |
switch (c) {
|
| 1748 |
case 's': |
| 1749 |
flags |= BDRV_O_SNAPSHOT; |
| 1750 |
break;
|
| 1751 |
case 'n': |
| 1752 |
flags |= BDRV_O_NOCACHE; |
| 1753 |
break;
|
| 1754 |
case 'c': |
| 1755 |
add_user_command(optarg); |
| 1756 |
break;
|
| 1757 |
case 'r': |
| 1758 |
readonly = 1;
|
| 1759 |
break;
|
| 1760 |
case 'm': |
| 1761 |
misalign = 1;
|
| 1762 |
break;
|
| 1763 |
case 'g': |
| 1764 |
growable = 1;
|
| 1765 |
break;
|
| 1766 |
case 'k': |
| 1767 |
flags |= BDRV_O_NATIVE_AIO; |
| 1768 |
break;
|
| 1769 |
case 'V': |
| 1770 |
printf("%s version %s\n", progname, VERSION);
|
| 1771 |
exit(0);
|
| 1772 |
case 'h': |
| 1773 |
usage(progname); |
| 1774 |
exit(0);
|
| 1775 |
default:
|
| 1776 |
usage(progname); |
| 1777 |
exit(1);
|
| 1778 |
} |
| 1779 |
} |
| 1780 |
|
| 1781 |
if ((argc - optind) > 1) { |
| 1782 |
usage(progname); |
| 1783 |
exit(1);
|
| 1784 |
} |
| 1785 |
|
| 1786 |
bdrv_init(); |
| 1787 |
|
| 1788 |
/* initialize commands */
|
| 1789 |
quit_init(); |
| 1790 |
help_init(); |
| 1791 |
add_command(&open_cmd); |
| 1792 |
add_command(&close_cmd); |
| 1793 |
add_command(&read_cmd); |
| 1794 |
add_command(&readv_cmd); |
| 1795 |
add_command(&write_cmd); |
| 1796 |
add_command(&writev_cmd); |
| 1797 |
add_command(&multiwrite_cmd); |
| 1798 |
add_command(&aio_read_cmd); |
| 1799 |
add_command(&aio_write_cmd); |
| 1800 |
add_command(&aio_flush_cmd); |
| 1801 |
add_command(&flush_cmd); |
| 1802 |
add_command(&truncate_cmd); |
| 1803 |
add_command(&length_cmd); |
| 1804 |
add_command(&info_cmd); |
| 1805 |
add_command(&discard_cmd); |
| 1806 |
add_command(&alloc_cmd); |
| 1807 |
add_command(&map_cmd); |
| 1808 |
|
| 1809 |
add_args_command(init_args_command); |
| 1810 |
add_check_command(init_check_command); |
| 1811 |
|
| 1812 |
/* open the device */
|
| 1813 |
if (!readonly) {
|
| 1814 |
flags |= BDRV_O_RDWR; |
| 1815 |
} |
| 1816 |
|
| 1817 |
if ((argc - optind) == 1) |
| 1818 |
openfile(argv[optind], flags, growable); |
| 1819 |
command_loop(); |
| 1820 |
|
| 1821 |
/*
|
| 1822 |
* Make sure all outstanding requests get flushed the program exits.
|
| 1823 |
*/
|
| 1824 |
qemu_aio_flush(); |
| 1825 |
|
| 1826 |
if (bs)
|
| 1827 |
bdrv_close(bs); |
| 1828 |
return 0; |
| 1829 |
} |