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/*
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---|---|
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* 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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*/
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#include <sys/time.h> |
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#include <sys/types.h> |
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#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" |
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#include "block_int.h" |
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#include "cmd.h" |
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|
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#define VERSION "0.0.1" |
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|
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#define CMD_NOFILE_OK 0x01 |
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|
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char *progname;
|
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static BlockDriverState *bs;
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|
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static int misalign; |
29 |
|
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/*
|
31 |
* Parse the pattern argument to various sub-commands.
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*
|
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* 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.
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*/
|
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static int parse_pattern(const char *arg) |
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{ |
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char *endptr = NULL; |
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long pattern;
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|
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pattern = strtol(arg, &endptr, 0);
|
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if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
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printf("%s is not a valid pattern byte\n", arg);
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return -1; |
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} |
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|
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return pattern;
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} |
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|
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/*
|
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* Memory allocation helpers.
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*
|
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* Make sure memory is aligned by default, or purposefully misaligned if
|
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* that is specified on the command line.
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*/
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|
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#define MISALIGN_OFFSET 16 |
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static void *qemu_io_alloc(size_t len, int pattern) |
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{ |
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void *buf;
|
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|
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if (misalign)
|
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len += MISALIGN_OFFSET; |
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buf = qemu_memalign(512, len);
|
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memset(buf, pattern, len); |
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if (misalign)
|
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buf += MISALIGN_OFFSET; |
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return buf;
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} |
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|
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static void qemu_io_free(void *p) |
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{ |
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if (misalign)
|
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p -= MISALIGN_OFFSET; |
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qemu_vfree(p); |
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} |
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|
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static void |
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dump_buffer(const void *buffer, int64_t offset, int len) |
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{ |
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int i, j;
|
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const uint8_t *p;
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|
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for (i = 0, p = buffer; i < len; i += 16) { |
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const uint8_t *s = p;
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|
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printf("%08llx: ", (unsigned long long)offset + i); |
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for (j = 0; j < 16 && i + j < len; j++, p++) |
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printf("%02x ", *p);
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printf(" ");
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for (j = 0; j < 16 && i + j < len; j++, s++) { |
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if (isalnum(*s))
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printf("%c", *s);
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else
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printf(".");
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} |
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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); |
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if (!Cflag) {
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cvtstr((double)total, s1, sizeof(s1)); |
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cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
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printf("%s %d/%d bytes at offset %lld\n",
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op, total, count, (long long)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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} |
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|
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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) |
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{ |
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size_t *sizes = calloc(nr_iov, sizeof(size_t));
|
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size_t count = 0;
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void *buf = NULL; |
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void *p;
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int i;
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|
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for (i = 0; i < nr_iov; i++) { |
137 |
char *arg = argv[i];
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long long len; |
139 |
|
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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 > UINT_MAX) {
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printf("too large length argument -- %s\n", arg);
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goto fail;
|
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} |
151 |
|
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if (len & 0x1ff) { |
153 |
printf("length argument %lld is not sector aligned\n",
|
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len); |
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goto fail;
|
156 |
} |
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++) { |
167 |
qemu_iovec_add(qiov, p, sizes[i]); |
168 |
p += sizes[i]; |
169 |
} |
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 |
{ |
178 |
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 |
|
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static int do_write(char *buf, int64_t offset, int count, int *total) |
188 |
{ |
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int ret;
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|
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ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
192 |
if (ret < 0) |
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return ret;
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*total = count; |
195 |
return 1; |
196 |
} |
197 |
|
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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) |
202 |
return *total;
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return 1; |
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} |
205 |
|
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static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
207 |
{ |
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*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
209 |
if (*total < 0) |
210 |
return *total;
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return 1; |
212 |
} |
213 |
|
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static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
215 |
{ |
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*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
217 |
if (*total < 0) |
218 |
return *total;
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return 1; |
220 |
} |
221 |
|
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static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
223 |
{ |
224 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
225 |
if (*total < 0) |
226 |
return *total;
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return 1; |
228 |
} |
229 |
|
230 |
#define NOT_DONE 0x7fffffff |
231 |
static void aio_rw_done(void *opaque, int ret) |
232 |
{ |
233 |
*(int *)opaque = ret;
|
234 |
} |
235 |
|
236 |
static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
237 |
{ |
238 |
BlockDriverAIOCB *acb; |
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int async_ret = NOT_DONE;
|
240 |
|
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acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
242 |
aio_rw_done, &async_ret); |
243 |
if (!acb)
|
244 |
return -EIO;
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245 |
|
246 |
while (async_ret == NOT_DONE)
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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 |
{ |
255 |
BlockDriverAIOCB *acb; |
256 |
int async_ret = NOT_DONE;
|
257 |
|
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acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
259 |
aio_rw_done, &async_ret); |
260 |
if (!acb)
|
261 |
return -EIO;
|
262 |
|
263 |
while (async_ret == NOT_DONE)
|
264 |
qemu_aio_wait(); |
265 |
|
266 |
*total = qiov->size; |
267 |
return async_ret < 0 ? async_ret : 1; |
268 |
} |
269 |
|
270 |
|
271 |
static void |
272 |
read_help(void)
|
273 |
{ |
274 |
printf( |
275 |
"\n"
|
276 |
" reads a range of bytes from the given offset\n"
|
277 |
"\n"
|
278 |
" Example:\n"
|
279 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
280 |
"\n"
|
281 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
282 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
283 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
284 |
" -C, -- report statistics in a machine parsable format\n"
|
285 |
" -l, -- length for pattern verification (only with -P)\n"
|
286 |
" -p, -- use bdrv_pread to read the file\n"
|
287 |
" -P, -- use a pattern to verify read data\n"
|
288 |
" -q, -- quite mode, do not show I/O statistics\n"
|
289 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
290 |
" -v, -- dump buffer to standard output\n"
|
291 |
"\n");
|
292 |
} |
293 |
|
294 |
static int read_f(int argc, char **argv); |
295 |
|
296 |
static const cmdinfo_t read_cmd = { |
297 |
.name = "read",
|
298 |
.altname = "r",
|
299 |
.cfunc = read_f, |
300 |
.argmin = 2,
|
301 |
.argmax = -1,
|
302 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
303 |
.oneline = "reads a number of bytes at a specified offset",
|
304 |
.help = read_help, |
305 |
}; |
306 |
|
307 |
static int |
308 |
read_f(int argc, char **argv) |
309 |
{ |
310 |
struct timeval t1, t2;
|
311 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
312 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
313 |
int c, cnt;
|
314 |
char *buf;
|
315 |
int64_t offset; |
316 |
int count;
|
317 |
/* Some compilers get confused and warn if this is not initialized. */
|
318 |
int total = 0; |
319 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
320 |
|
321 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
322 |
switch (c) {
|
323 |
case 'b': |
324 |
bflag = 1;
|
325 |
break;
|
326 |
case 'C': |
327 |
Cflag = 1;
|
328 |
break;
|
329 |
case 'l': |
330 |
lflag = 1;
|
331 |
pattern_count = cvtnum(optarg); |
332 |
if (pattern_count < 0) { |
333 |
printf("non-numeric length argument -- %s\n", optarg);
|
334 |
return 0; |
335 |
} |
336 |
break;
|
337 |
case 'p': |
338 |
pflag = 1;
|
339 |
break;
|
340 |
case 'P': |
341 |
Pflag = 1;
|
342 |
pattern = parse_pattern(optarg); |
343 |
if (pattern < 0) |
344 |
return 0; |
345 |
break;
|
346 |
case 'q': |
347 |
qflag = 1;
|
348 |
break;
|
349 |
case 's': |
350 |
sflag = 1;
|
351 |
pattern_offset = cvtnum(optarg); |
352 |
if (pattern_offset < 0) { |
353 |
printf("non-numeric length argument -- %s\n", optarg);
|
354 |
return 0; |
355 |
} |
356 |
break;
|
357 |
case 'v': |
358 |
vflag = 1;
|
359 |
break;
|
360 |
default:
|
361 |
return command_usage(&read_cmd);
|
362 |
} |
363 |
} |
364 |
|
365 |
if (optind != argc - 2) |
366 |
return command_usage(&read_cmd);
|
367 |
|
368 |
if (bflag && pflag) {
|
369 |
printf("-b and -p cannot be specified at the same time\n");
|
370 |
return 0; |
371 |
} |
372 |
|
373 |
offset = cvtnum(argv[optind]); |
374 |
if (offset < 0) { |
375 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
376 |
return 0; |
377 |
} |
378 |
|
379 |
optind++; |
380 |
count = cvtnum(argv[optind]); |
381 |
if (count < 0) { |
382 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
383 |
return 0; |
384 |
} |
385 |
|
386 |
if (!Pflag && (lflag || sflag)) {
|
387 |
return command_usage(&read_cmd);
|
388 |
} |
389 |
|
390 |
if (!lflag) {
|
391 |
pattern_count = count - pattern_offset; |
392 |
} |
393 |
|
394 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
395 |
printf("pattern verfication range exceeds end of read data\n");
|
396 |
return 0; |
397 |
} |
398 |
|
399 |
if (!pflag)
|
400 |
if (offset & 0x1ff) { |
401 |
printf("offset %lld is not sector aligned\n",
|
402 |
(long long)offset); |
403 |
return 0; |
404 |
|
405 |
if (count & 0x1ff) { |
406 |
printf("count %d is not sector aligned\n",
|
407 |
count); |
408 |
return 0; |
409 |
} |
410 |
} |
411 |
|
412 |
buf = qemu_io_alloc(count, 0xab);
|
413 |
|
414 |
gettimeofday(&t1, NULL);
|
415 |
if (pflag)
|
416 |
cnt = do_pread(buf, offset, count, &total); |
417 |
else if (bflag) |
418 |
cnt = do_load_vmstate(buf, offset, count, &total); |
419 |
else
|
420 |
cnt = do_read(buf, offset, count, &total); |
421 |
gettimeofday(&t2, NULL);
|
422 |
|
423 |
if (cnt < 0) { |
424 |
printf("read failed: %s\n", strerror(-cnt));
|
425 |
goto out;
|
426 |
} |
427 |
|
428 |
if (Pflag) {
|
429 |
void* cmp_buf = malloc(pattern_count);
|
430 |
memset(cmp_buf, pattern, pattern_count); |
431 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
432 |
printf("Pattern verification failed at offset %lld, "
|
433 |
"%d bytes\n",
|
434 |
(long long) offset + pattern_offset, pattern_count); |
435 |
} |
436 |
free(cmp_buf); |
437 |
} |
438 |
|
439 |
if (qflag)
|
440 |
goto out;
|
441 |
|
442 |
if (vflag)
|
443 |
dump_buffer(buf, offset, count); |
444 |
|
445 |
/* Finally, report back -- -C gives a parsable format */
|
446 |
t2 = tsub(t2, t1); |
447 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
448 |
|
449 |
out:
|
450 |
qemu_io_free(buf); |
451 |
|
452 |
return 0; |
453 |
} |
454 |
|
455 |
static void |
456 |
readv_help(void)
|
457 |
{ |
458 |
printf( |
459 |
"\n"
|
460 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
461 |
"\n"
|
462 |
" Example:\n"
|
463 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
464 |
"\n"
|
465 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
466 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
467 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
468 |
" -C, -- report statistics in a machine parsable format\n"
|
469 |
" -P, -- use a pattern to verify read data\n"
|
470 |
" -v, -- dump buffer to standard output\n"
|
471 |
" -q, -- quite mode, do not show I/O statistics\n"
|
472 |
"\n");
|
473 |
} |
474 |
|
475 |
static int readv_f(int argc, char **argv); |
476 |
|
477 |
static const cmdinfo_t readv_cmd = { |
478 |
.name = "readv",
|
479 |
.cfunc = readv_f, |
480 |
.argmin = 2,
|
481 |
.argmax = -1,
|
482 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
483 |
.oneline = "reads a number of bytes at a specified offset",
|
484 |
.help = readv_help, |
485 |
}; |
486 |
|
487 |
static int |
488 |
readv_f(int argc, char **argv) |
489 |
{ |
490 |
struct timeval t1, t2;
|
491 |
int Cflag = 0, qflag = 0, vflag = 0; |
492 |
int c, cnt;
|
493 |
char *buf;
|
494 |
int64_t offset; |
495 |
/* Some compilers get confused and warn if this is not initialized. */
|
496 |
int total = 0; |
497 |
int nr_iov;
|
498 |
QEMUIOVector qiov; |
499 |
int pattern = 0; |
500 |
int Pflag = 0; |
501 |
|
502 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
503 |
switch (c) {
|
504 |
case 'C': |
505 |
Cflag = 1;
|
506 |
break;
|
507 |
case 'P': |
508 |
Pflag = 1;
|
509 |
pattern = parse_pattern(optarg); |
510 |
if (pattern < 0) |
511 |
return 0; |
512 |
break;
|
513 |
case 'q': |
514 |
qflag = 1;
|
515 |
break;
|
516 |
case 'v': |
517 |
vflag = 1;
|
518 |
break;
|
519 |
default:
|
520 |
return command_usage(&readv_cmd);
|
521 |
} |
522 |
} |
523 |
|
524 |
if (optind > argc - 2) |
525 |
return command_usage(&readv_cmd);
|
526 |
|
527 |
|
528 |
offset = cvtnum(argv[optind]); |
529 |
if (offset < 0) { |
530 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
531 |
return 0; |
532 |
} |
533 |
optind++; |
534 |
|
535 |
if (offset & 0x1ff) { |
536 |
printf("offset %lld is not sector aligned\n",
|
537 |
(long long)offset); |
538 |
return 0; |
539 |
} |
540 |
|
541 |
nr_iov = argc - optind; |
542 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
543 |
|
544 |
gettimeofday(&t1, NULL);
|
545 |
cnt = do_aio_readv(&qiov, offset, &total); |
546 |
gettimeofday(&t2, NULL);
|
547 |
|
548 |
if (cnt < 0) { |
549 |
printf("readv failed: %s\n", strerror(-cnt));
|
550 |
goto out;
|
551 |
} |
552 |
|
553 |
if (Pflag) {
|
554 |
void* cmp_buf = malloc(qiov.size);
|
555 |
memset(cmp_buf, pattern, qiov.size); |
556 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
557 |
printf("Pattern verification failed at offset %lld, "
|
558 |
"%zd bytes\n",
|
559 |
(long long) offset, qiov.size); |
560 |
} |
561 |
free(cmp_buf); |
562 |
} |
563 |
|
564 |
if (qflag)
|
565 |
goto out;
|
566 |
|
567 |
if (vflag)
|
568 |
dump_buffer(buf, offset, qiov.size); |
569 |
|
570 |
/* Finally, report back -- -C gives a parsable format */
|
571 |
t2 = tsub(t2, t1); |
572 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
573 |
|
574 |
out:
|
575 |
qemu_io_free(buf); |
576 |
return 0; |
577 |
} |
578 |
|
579 |
static void |
580 |
write_help(void)
|
581 |
{ |
582 |
printf( |
583 |
"\n"
|
584 |
" writes a range of bytes from the given offset\n"
|
585 |
"\n"
|
586 |
" Example:\n"
|
587 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
588 |
"\n"
|
589 |
" Writes into a segment of the currently open file, using a buffer\n"
|
590 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
591 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
592 |
" -p, -- use bdrv_pwrite to write the file\n"
|
593 |
" -P, -- use different pattern to fill file\n"
|
594 |
" -C, -- report statistics in a machine parsable format\n"
|
595 |
" -q, -- quite mode, do not show I/O statistics\n"
|
596 |
"\n");
|
597 |
} |
598 |
|
599 |
static int write_f(int argc, char **argv); |
600 |
|
601 |
static const cmdinfo_t write_cmd = { |
602 |
.name = "write",
|
603 |
.altname = "w",
|
604 |
.cfunc = write_f, |
605 |
.argmin = 2,
|
606 |
.argmax = -1,
|
607 |
.args = "[-abCpq] [-P pattern ] off len",
|
608 |
.oneline = "writes a number of bytes at a specified offset",
|
609 |
.help = write_help, |
610 |
}; |
611 |
|
612 |
static int |
613 |
write_f(int argc, char **argv) |
614 |
{ |
615 |
struct timeval t1, t2;
|
616 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
617 |
int c, cnt;
|
618 |
char *buf;
|
619 |
int64_t offset; |
620 |
int count;
|
621 |
/* Some compilers get confused and warn if this is not initialized. */
|
622 |
int total = 0; |
623 |
int pattern = 0xcd; |
624 |
|
625 |
while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
626 |
switch (c) {
|
627 |
case 'b': |
628 |
bflag = 1;
|
629 |
break;
|
630 |
case 'C': |
631 |
Cflag = 1;
|
632 |
break;
|
633 |
case 'p': |
634 |
pflag = 1;
|
635 |
break;
|
636 |
case 'P': |
637 |
pattern = parse_pattern(optarg); |
638 |
if (pattern < 0) |
639 |
return 0; |
640 |
break;
|
641 |
case 'q': |
642 |
qflag = 1;
|
643 |
break;
|
644 |
default:
|
645 |
return command_usage(&write_cmd);
|
646 |
} |
647 |
} |
648 |
|
649 |
if (optind != argc - 2) |
650 |
return command_usage(&write_cmd);
|
651 |
|
652 |
if (bflag && pflag) {
|
653 |
printf("-b and -p cannot be specified at the same time\n");
|
654 |
return 0; |
655 |
} |
656 |
|
657 |
offset = cvtnum(argv[optind]); |
658 |
if (offset < 0) { |
659 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
660 |
return 0; |
661 |
} |
662 |
|
663 |
optind++; |
664 |
count = cvtnum(argv[optind]); |
665 |
if (count < 0) { |
666 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
667 |
return 0; |
668 |
} |
669 |
|
670 |
if (!pflag) {
|
671 |
if (offset & 0x1ff) { |
672 |
printf("offset %lld is not sector aligned\n",
|
673 |
(long long)offset); |
674 |
return 0; |
675 |
} |
676 |
|
677 |
if (count & 0x1ff) { |
678 |
printf("count %d is not sector aligned\n",
|
679 |
count); |
680 |
return 0; |
681 |
} |
682 |
} |
683 |
|
684 |
buf = qemu_io_alloc(count, pattern); |
685 |
|
686 |
gettimeofday(&t1, NULL);
|
687 |
if (pflag)
|
688 |
cnt = do_pwrite(buf, offset, count, &total); |
689 |
else if (bflag) |
690 |
cnt = do_save_vmstate(buf, offset, count, &total); |
691 |
else
|
692 |
cnt = do_write(buf, offset, count, &total); |
693 |
gettimeofday(&t2, NULL);
|
694 |
|
695 |
if (cnt < 0) { |
696 |
printf("write failed: %s\n", strerror(-cnt));
|
697 |
goto out;
|
698 |
} |
699 |
|
700 |
if (qflag)
|
701 |
goto out;
|
702 |
|
703 |
/* Finally, report back -- -C gives a parsable format */
|
704 |
t2 = tsub(t2, t1); |
705 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
706 |
|
707 |
out:
|
708 |
qemu_io_free(buf); |
709 |
|
710 |
return 0; |
711 |
} |
712 |
|
713 |
static void |
714 |
writev_help(void)
|
715 |
{ |
716 |
printf( |
717 |
"\n"
|
718 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
719 |
"\n"
|
720 |
" Example:\n"
|
721 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
722 |
"\n"
|
723 |
" Writes into a segment of the currently open file, using a buffer\n"
|
724 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
725 |
" -P, -- use different pattern to fill file\n"
|
726 |
" -C, -- report statistics in a machine parsable format\n"
|
727 |
" -q, -- quite mode, do not show I/O statistics\n"
|
728 |
"\n");
|
729 |
} |
730 |
|
731 |
static int writev_f(int argc, char **argv); |
732 |
|
733 |
static const cmdinfo_t writev_cmd = { |
734 |
.name = "writev",
|
735 |
.cfunc = writev_f, |
736 |
.argmin = 2,
|
737 |
.argmax = -1,
|
738 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
739 |
.oneline = "writes a number of bytes at a specified offset",
|
740 |
.help = writev_help, |
741 |
}; |
742 |
|
743 |
static int |
744 |
writev_f(int argc, char **argv) |
745 |
{ |
746 |
struct timeval t1, t2;
|
747 |
int Cflag = 0, qflag = 0; |
748 |
int c, cnt;
|
749 |
char *buf;
|
750 |
int64_t offset; |
751 |
/* Some compilers get confused and warn if this is not initialized. */
|
752 |
int total = 0; |
753 |
int nr_iov;
|
754 |
int pattern = 0xcd; |
755 |
QEMUIOVector qiov; |
756 |
|
757 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
758 |
switch (c) {
|
759 |
case 'C': |
760 |
Cflag = 1;
|
761 |
break;
|
762 |
case 'q': |
763 |
qflag = 1;
|
764 |
break;
|
765 |
case 'P': |
766 |
pattern = parse_pattern(optarg); |
767 |
if (pattern < 0) |
768 |
return 0; |
769 |
break;
|
770 |
default:
|
771 |
return command_usage(&writev_cmd);
|
772 |
} |
773 |
} |
774 |
|
775 |
if (optind > argc - 2) |
776 |
return command_usage(&writev_cmd);
|
777 |
|
778 |
offset = cvtnum(argv[optind]); |
779 |
if (offset < 0) { |
780 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
781 |
return 0; |
782 |
} |
783 |
optind++; |
784 |
|
785 |
if (offset & 0x1ff) { |
786 |
printf("offset %lld is not sector aligned\n",
|
787 |
(long long)offset); |
788 |
return 0; |
789 |
} |
790 |
|
791 |
nr_iov = argc - optind; |
792 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
793 |
|
794 |
gettimeofday(&t1, NULL);
|
795 |
cnt = do_aio_writev(&qiov, offset, &total); |
796 |
gettimeofday(&t2, NULL);
|
797 |
|
798 |
if (cnt < 0) { |
799 |
printf("writev failed: %s\n", strerror(-cnt));
|
800 |
goto out;
|
801 |
} |
802 |
|
803 |
if (qflag)
|
804 |
goto out;
|
805 |
|
806 |
/* Finally, report back -- -C gives a parsable format */
|
807 |
t2 = tsub(t2, t1); |
808 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
809 |
out:
|
810 |
qemu_io_free(buf); |
811 |
return 0; |
812 |
} |
813 |
|
814 |
struct aio_ctx {
|
815 |
QEMUIOVector qiov; |
816 |
int64_t offset; |
817 |
char *buf;
|
818 |
int qflag;
|
819 |
int vflag;
|
820 |
int Cflag;
|
821 |
int Pflag;
|
822 |
int pattern;
|
823 |
struct timeval t1;
|
824 |
}; |
825 |
|
826 |
static void |
827 |
aio_write_done(void *opaque, int ret) |
828 |
{ |
829 |
struct aio_ctx *ctx = opaque;
|
830 |
struct timeval t2;
|
831 |
|
832 |
gettimeofday(&t2, NULL);
|
833 |
|
834 |
|
835 |
if (ret < 0) { |
836 |
printf("aio_write failed: %s\n", strerror(-ret));
|
837 |
goto out;
|
838 |
} |
839 |
|
840 |
if (ctx->qflag) {
|
841 |
goto out;
|
842 |
} |
843 |
|
844 |
/* Finally, report back -- -C gives a parsable format */
|
845 |
t2 = tsub(t2, ctx->t1); |
846 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
847 |
ctx->qiov.size, 1, ctx->Cflag);
|
848 |
out:
|
849 |
qemu_io_free(ctx->buf); |
850 |
free(ctx); |
851 |
} |
852 |
|
853 |
static void |
854 |
aio_read_done(void *opaque, int ret) |
855 |
{ |
856 |
struct aio_ctx *ctx = opaque;
|
857 |
struct timeval t2;
|
858 |
|
859 |
gettimeofday(&t2, NULL);
|
860 |
|
861 |
if (ret < 0) { |
862 |
printf("readv failed: %s\n", strerror(-ret));
|
863 |
goto out;
|
864 |
} |
865 |
|
866 |
if (ctx->Pflag) {
|
867 |
void *cmp_buf = malloc(ctx->qiov.size);
|
868 |
|
869 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
870 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
871 |
printf("Pattern verification failed at offset %lld, "
|
872 |
"%zd bytes\n",
|
873 |
(long long) ctx->offset, ctx->qiov.size); |
874 |
} |
875 |
free(cmp_buf); |
876 |
} |
877 |
|
878 |
if (ctx->qflag) {
|
879 |
goto out;
|
880 |
} |
881 |
|
882 |
if (ctx->vflag) {
|
883 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
884 |
} |
885 |
|
886 |
/* Finally, report back -- -C gives a parsable format */
|
887 |
t2 = tsub(t2, ctx->t1); |
888 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
889 |
ctx->qiov.size, 1, ctx->Cflag);
|
890 |
out:
|
891 |
qemu_io_free(ctx->buf); |
892 |
free(ctx); |
893 |
} |
894 |
|
895 |
static void |
896 |
aio_read_help(void)
|
897 |
{ |
898 |
printf( |
899 |
"\n"
|
900 |
" asynchronously reads a range of bytes from the given offset\n"
|
901 |
"\n"
|
902 |
" Example:\n"
|
903 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
904 |
"\n"
|
905 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
906 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
907 |
" The read is performed asynchronously and should the aio_flush command \n"
|
908 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
909 |
" -C, -- report statistics in a machine parsable format\n"
|
910 |
" -P, -- use a pattern to verify read data\n"
|
911 |
" -v, -- dump buffer to standard output\n"
|
912 |
" -q, -- quite mode, do not show I/O statistics\n"
|
913 |
"\n");
|
914 |
} |
915 |
|
916 |
static int aio_read_f(int argc, char **argv); |
917 |
|
918 |
static const cmdinfo_t aio_read_cmd = { |
919 |
.name = "aio_read",
|
920 |
.cfunc = aio_read_f, |
921 |
.argmin = 2,
|
922 |
.argmax = -1,
|
923 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
924 |
.oneline = "asynchronously reads a number of bytes",
|
925 |
.help = aio_read_help, |
926 |
}; |
927 |
|
928 |
static int |
929 |
aio_read_f(int argc, char **argv) |
930 |
{ |
931 |
int nr_iov, c;
|
932 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
933 |
BlockDriverAIOCB *acb; |
934 |
|
935 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
936 |
switch (c) {
|
937 |
case 'C': |
938 |
ctx->Cflag = 1;
|
939 |
break;
|
940 |
case 'P': |
941 |
ctx->Pflag = 1;
|
942 |
ctx->pattern = parse_pattern(optarg); |
943 |
if (ctx->pattern < 0) |
944 |
return 0; |
945 |
break;
|
946 |
case 'q': |
947 |
ctx->qflag = 1;
|
948 |
break;
|
949 |
case 'v': |
950 |
ctx->vflag = 1;
|
951 |
break;
|
952 |
default:
|
953 |
free(ctx); |
954 |
return command_usage(&aio_read_cmd);
|
955 |
} |
956 |
} |
957 |
|
958 |
if (optind > argc - 2) { |
959 |
free(ctx); |
960 |
return command_usage(&aio_read_cmd);
|
961 |
} |
962 |
|
963 |
ctx->offset = cvtnum(argv[optind]); |
964 |
if (ctx->offset < 0) { |
965 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
966 |
free(ctx); |
967 |
return 0; |
968 |
} |
969 |
optind++; |
970 |
|
971 |
if (ctx->offset & 0x1ff) { |
972 |
printf("offset %lld is not sector aligned\n",
|
973 |
(long long)ctx->offset); |
974 |
free(ctx); |
975 |
return 0; |
976 |
} |
977 |
|
978 |
nr_iov = argc - optind; |
979 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
980 |
|
981 |
gettimeofday(&ctx->t1, NULL);
|
982 |
acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
983 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
984 |
if (!acb) {
|
985 |
free(ctx->buf); |
986 |
free(ctx); |
987 |
return -EIO;
|
988 |
} |
989 |
|
990 |
return 0; |
991 |
} |
992 |
|
993 |
static void |
994 |
aio_write_help(void)
|
995 |
{ |
996 |
printf( |
997 |
"\n"
|
998 |
" asynchronously writes a range of bytes from the given offset source \n"
|
999 |
" from multiple buffers\n"
|
1000 |
"\n"
|
1001 |
" Example:\n"
|
1002 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1003 |
"\n"
|
1004 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1005 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1006 |
" The write is performed asynchronously and should the aio_flush command \n"
|
1007 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
1008 |
" -P, -- use different pattern to fill file\n"
|
1009 |
" -C, -- report statistics in a machine parsable format\n"
|
1010 |
" -q, -- quite mode, do not show I/O statistics\n"
|
1011 |
"\n");
|
1012 |
} |
1013 |
|
1014 |
static int aio_write_f(int argc, char **argv); |
1015 |
|
1016 |
static const cmdinfo_t aio_write_cmd = { |
1017 |
.name = "aio_write",
|
1018 |
.cfunc = aio_write_f, |
1019 |
.argmin = 2,
|
1020 |
.argmax = -1,
|
1021 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1022 |
.oneline = "asynchronously writes a number of bytes",
|
1023 |
.help = aio_write_help, |
1024 |
}; |
1025 |
|
1026 |
static int |
1027 |
aio_write_f(int argc, char **argv) |
1028 |
{ |
1029 |
int nr_iov, c;
|
1030 |
int pattern = 0xcd; |
1031 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
1032 |
BlockDriverAIOCB *acb; |
1033 |
|
1034 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1035 |
switch (c) {
|
1036 |
case 'C': |
1037 |
ctx->Cflag = 1;
|
1038 |
break;
|
1039 |
case 'q': |
1040 |
ctx->qflag = 1;
|
1041 |
break;
|
1042 |
case 'P': |
1043 |
pattern = parse_pattern(optarg); |
1044 |
if (pattern < 0) |
1045 |
return 0; |
1046 |
break;
|
1047 |
default:
|
1048 |
free(ctx); |
1049 |
return command_usage(&aio_write_cmd);
|
1050 |
} |
1051 |
} |
1052 |
|
1053 |
if (optind > argc - 2) { |
1054 |
free(ctx); |
1055 |
return command_usage(&aio_write_cmd);
|
1056 |
} |
1057 |
|
1058 |
ctx->offset = cvtnum(argv[optind]); |
1059 |
if (ctx->offset < 0) { |
1060 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1061 |
free(ctx); |
1062 |
return 0; |
1063 |
} |
1064 |
optind++; |
1065 |
|
1066 |
if (ctx->offset & 0x1ff) { |
1067 |
printf("offset %lld is not sector aligned\n",
|
1068 |
(long long)ctx->offset); |
1069 |
free(ctx); |
1070 |
return 0; |
1071 |
} |
1072 |
|
1073 |
nr_iov = argc - optind; |
1074 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1075 |
|
1076 |
gettimeofday(&ctx->t1, NULL);
|
1077 |
acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1078 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1079 |
if (!acb) {
|
1080 |
free(ctx->buf); |
1081 |
free(ctx); |
1082 |
return -EIO;
|
1083 |
} |
1084 |
|
1085 |
return 0; |
1086 |
} |
1087 |
|
1088 |
static int |
1089 |
aio_flush_f(int argc, char **argv) |
1090 |
{ |
1091 |
qemu_aio_flush(); |
1092 |
return 0; |
1093 |
} |
1094 |
|
1095 |
static const cmdinfo_t aio_flush_cmd = { |
1096 |
.name = "aio_flush",
|
1097 |
.cfunc = aio_flush_f, |
1098 |
.oneline = "completes all outstanding aio requets"
|
1099 |
}; |
1100 |
|
1101 |
static int |
1102 |
flush_f(int argc, char **argv) |
1103 |
{ |
1104 |
bdrv_flush(bs); |
1105 |
return 0; |
1106 |
} |
1107 |
|
1108 |
static const cmdinfo_t flush_cmd = { |
1109 |
.name = "flush",
|
1110 |
.altname = "f",
|
1111 |
.cfunc = flush_f, |
1112 |
.oneline = "flush all in-core file state to disk",
|
1113 |
}; |
1114 |
|
1115 |
static int |
1116 |
truncate_f(int argc, char **argv) |
1117 |
{ |
1118 |
int64_t offset; |
1119 |
int ret;
|
1120 |
|
1121 |
offset = cvtnum(argv[1]);
|
1122 |
if (offset < 0) { |
1123 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1124 |
return 0; |
1125 |
} |
1126 |
|
1127 |
ret = bdrv_truncate(bs, offset); |
1128 |
if (ret < 0) { |
1129 |
printf("truncate: %s", strerror(ret));
|
1130 |
return 0; |
1131 |
} |
1132 |
|
1133 |
return 0; |
1134 |
} |
1135 |
|
1136 |
static const cmdinfo_t truncate_cmd = { |
1137 |
.name = "truncate",
|
1138 |
.altname = "t",
|
1139 |
.cfunc = truncate_f, |
1140 |
.argmin = 1,
|
1141 |
.argmax = 1,
|
1142 |
.args = "off",
|
1143 |
.oneline = "truncates the current file at the given offset",
|
1144 |
}; |
1145 |
|
1146 |
static int |
1147 |
length_f(int argc, char **argv) |
1148 |
{ |
1149 |
int64_t size; |
1150 |
char s1[64]; |
1151 |
|
1152 |
size = bdrv_getlength(bs); |
1153 |
if (size < 0) { |
1154 |
printf("getlength: %s", strerror(size));
|
1155 |
return 0; |
1156 |
} |
1157 |
|
1158 |
cvtstr(size, s1, sizeof(s1));
|
1159 |
printf("%s\n", s1);
|
1160 |
return 0; |
1161 |
} |
1162 |
|
1163 |
|
1164 |
static const cmdinfo_t length_cmd = { |
1165 |
.name = "length",
|
1166 |
.altname = "l",
|
1167 |
.cfunc = length_f, |
1168 |
.oneline = "gets the length of the current file",
|
1169 |
}; |
1170 |
|
1171 |
|
1172 |
static int |
1173 |
info_f(int argc, char **argv) |
1174 |
{ |
1175 |
BlockDriverInfo bdi; |
1176 |
char s1[64], s2[64]; |
1177 |
int ret;
|
1178 |
|
1179 |
if (bs->drv && bs->drv->format_name)
|
1180 |
printf("format name: %s\n", bs->drv->format_name);
|
1181 |
if (bs->drv && bs->drv->protocol_name)
|
1182 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1183 |
|
1184 |
ret = bdrv_get_info(bs, &bdi); |
1185 |
if (ret)
|
1186 |
return 0; |
1187 |
|
1188 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1189 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1190 |
|
1191 |
printf("cluster size: %s\n", s1);
|
1192 |
printf("vm state offset: %s\n", s2);
|
1193 |
|
1194 |
return 0; |
1195 |
} |
1196 |
|
1197 |
|
1198 |
|
1199 |
static const cmdinfo_t info_cmd = { |
1200 |
.name = "info",
|
1201 |
.altname = "i",
|
1202 |
.cfunc = info_f, |
1203 |
.oneline = "prints information about the current file",
|
1204 |
}; |
1205 |
|
1206 |
static int |
1207 |
alloc_f(int argc, char **argv) |
1208 |
{ |
1209 |
int64_t offset; |
1210 |
int nb_sectors, remaining;
|
1211 |
char s1[64]; |
1212 |
int num, sum_alloc;
|
1213 |
int ret;
|
1214 |
|
1215 |
offset = cvtnum(argv[1]);
|
1216 |
if (offset & 0x1ff) { |
1217 |
printf("offset %lld is not sector aligned\n",
|
1218 |
(long long)offset); |
1219 |
return 0; |
1220 |
} |
1221 |
|
1222 |
if (argc == 3) |
1223 |
nb_sectors = cvtnum(argv[2]);
|
1224 |
else
|
1225 |
nb_sectors = 1;
|
1226 |
|
1227 |
remaining = nb_sectors; |
1228 |
sum_alloc = 0;
|
1229 |
while (remaining) {
|
1230 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
1231 |
remaining -= num; |
1232 |
if (ret) {
|
1233 |
sum_alloc += num; |
1234 |
} |
1235 |
} |
1236 |
|
1237 |
cvtstr(offset, s1, sizeof(s1));
|
1238 |
|
1239 |
if (nb_sectors == 1) |
1240 |
printf("sector allocated at offset %s\n", s1);
|
1241 |
else
|
1242 |
printf("%d/%d sectors allocated at offset %s\n",
|
1243 |
sum_alloc, nb_sectors, s1); |
1244 |
return 0; |
1245 |
} |
1246 |
|
1247 |
static const cmdinfo_t alloc_cmd = { |
1248 |
.name = "alloc",
|
1249 |
.altname = "a",
|
1250 |
.argmin = 1,
|
1251 |
.argmax = 2,
|
1252 |
.cfunc = alloc_f, |
1253 |
.args = "off [sectors]",
|
1254 |
.oneline = "checks if a sector is present in the file",
|
1255 |
}; |
1256 |
|
1257 |
static int |
1258 |
close_f(int argc, char **argv) |
1259 |
{ |
1260 |
bdrv_close(bs); |
1261 |
bs = NULL;
|
1262 |
return 0; |
1263 |
} |
1264 |
|
1265 |
static const cmdinfo_t close_cmd = { |
1266 |
.name = "close",
|
1267 |
.altname = "c",
|
1268 |
.cfunc = close_f, |
1269 |
.oneline = "close the current open file",
|
1270 |
}; |
1271 |
|
1272 |
static int openfile(char *name, int flags, int growable) |
1273 |
{ |
1274 |
if (bs) {
|
1275 |
fprintf(stderr, "file open already, try 'help close'\n");
|
1276 |
return 1; |
1277 |
} |
1278 |
|
1279 |
bs = bdrv_new("hda");
|
1280 |
if (!bs)
|
1281 |
return 1; |
1282 |
|
1283 |
if (growable) {
|
1284 |
flags |= BDRV_O_FILE; |
1285 |
} |
1286 |
|
1287 |
if (bdrv_open(bs, name, flags) == -1) { |
1288 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1289 |
bs = NULL;
|
1290 |
return 1; |
1291 |
} |
1292 |
|
1293 |
if (growable) {
|
1294 |
bs->growable = 1;
|
1295 |
} |
1296 |
return 0; |
1297 |
} |
1298 |
|
1299 |
static void |
1300 |
open_help(void)
|
1301 |
{ |
1302 |
printf( |
1303 |
"\n"
|
1304 |
" opens a new file in the requested mode\n"
|
1305 |
"\n"
|
1306 |
" Example:\n"
|
1307 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1308 |
"\n"
|
1309 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1310 |
" -r, -- open file read-only\n"
|
1311 |
" -s, -- use snapshot file\n"
|
1312 |
" -n, -- disable host cache\n"
|
1313 |
" -g, -- allow file to grow (only applies to protocols)"
|
1314 |
"\n");
|
1315 |
} |
1316 |
|
1317 |
static int open_f(int argc, char **argv); |
1318 |
|
1319 |
static const cmdinfo_t open_cmd = { |
1320 |
.name = "open",
|
1321 |
.altname = "o",
|
1322 |
.cfunc = open_f, |
1323 |
.argmin = 1,
|
1324 |
.argmax = -1,
|
1325 |
.flags = CMD_NOFILE_OK, |
1326 |
.args = "[-Crsn] [path]",
|
1327 |
.oneline = "open the file specified by path",
|
1328 |
.help = open_help, |
1329 |
}; |
1330 |
|
1331 |
static int |
1332 |
open_f(int argc, char **argv) |
1333 |
{ |
1334 |
int flags = 0; |
1335 |
int readonly = 0; |
1336 |
int growable = 0; |
1337 |
int c;
|
1338 |
|
1339 |
while ((c = getopt(argc, argv, "snrg")) != EOF) { |
1340 |
switch (c) {
|
1341 |
case 's': |
1342 |
flags |= BDRV_O_SNAPSHOT; |
1343 |
break;
|
1344 |
case 'n': |
1345 |
flags |= BDRV_O_NOCACHE; |
1346 |
break;
|
1347 |
case 'r': |
1348 |
readonly = 1;
|
1349 |
break;
|
1350 |
case 'g': |
1351 |
growable = 1;
|
1352 |
break;
|
1353 |
default:
|
1354 |
return command_usage(&open_cmd);
|
1355 |
} |
1356 |
} |
1357 |
|
1358 |
if (!readonly) {
|
1359 |
flags |= BDRV_O_RDWR; |
1360 |
} |
1361 |
|
1362 |
if (optind != argc - 1) |
1363 |
return command_usage(&open_cmd);
|
1364 |
|
1365 |
return openfile(argv[optind], flags, growable);
|
1366 |
} |
1367 |
|
1368 |
static int |
1369 |
init_args_command( |
1370 |
int index)
|
1371 |
{ |
1372 |
/* only one device allowed so far */
|
1373 |
if (index >= 1) |
1374 |
return 0; |
1375 |
return ++index;
|
1376 |
} |
1377 |
|
1378 |
static int |
1379 |
init_check_command( |
1380 |
const cmdinfo_t *ct)
|
1381 |
{ |
1382 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
1383 |
return 1; |
1384 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1385 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1386 |
return 0; |
1387 |
} |
1388 |
return 1; |
1389 |
} |
1390 |
|
1391 |
static void usage(const char *name) |
1392 |
{ |
1393 |
printf( |
1394 |
"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
|
1395 |
"QEMU Disk exerciser\n"
|
1396 |
"\n"
|
1397 |
" -c, --cmd command to execute\n"
|
1398 |
" -r, --read-only export read-only\n"
|
1399 |
" -s, --snapshot use snapshot file\n"
|
1400 |
" -n, --nocache disable host cache\n"
|
1401 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
1402 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1403 |
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
1404 |
" -h, --help display this help and exit\n"
|
1405 |
" -V, --version output version information and exit\n"
|
1406 |
"\n",
|
1407 |
name); |
1408 |
} |
1409 |
|
1410 |
|
1411 |
int main(int argc, char **argv) |
1412 |
{ |
1413 |
int readonly = 0; |
1414 |
int growable = 0; |
1415 |
const char *sopt = "hVc:rsnmgk"; |
1416 |
const struct option lopt[] = { |
1417 |
{ "help", 0, NULL, 'h' }, |
1418 |
{ "version", 0, NULL, 'V' }, |
1419 |
{ "offset", 1, NULL, 'o' }, |
1420 |
{ "cmd", 1, NULL, 'c' }, |
1421 |
{ "read-only", 0, NULL, 'r' }, |
1422 |
{ "snapshot", 0, NULL, 's' }, |
1423 |
{ "nocache", 0, NULL, 'n' }, |
1424 |
{ "misalign", 0, NULL, 'm' }, |
1425 |
{ "growable", 0, NULL, 'g' }, |
1426 |
{ "native-aio", 0, NULL, 'k' }, |
1427 |
{ NULL, 0, NULL, 0 } |
1428 |
}; |
1429 |
int c;
|
1430 |
int opt_index = 0; |
1431 |
int flags = 0; |
1432 |
|
1433 |
progname = basename(argv[0]);
|
1434 |
|
1435 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1436 |
switch (c) {
|
1437 |
case 's': |
1438 |
flags |= BDRV_O_SNAPSHOT; |
1439 |
break;
|
1440 |
case 'n': |
1441 |
flags |= BDRV_O_NOCACHE; |
1442 |
break;
|
1443 |
case 'c': |
1444 |
add_user_command(optarg); |
1445 |
break;
|
1446 |
case 'r': |
1447 |
readonly = 1;
|
1448 |
break;
|
1449 |
case 'm': |
1450 |
misalign = 1;
|
1451 |
break;
|
1452 |
case 'g': |
1453 |
growable = 1;
|
1454 |
break;
|
1455 |
case 'k': |
1456 |
flags |= BDRV_O_NATIVE_AIO; |
1457 |
break;
|
1458 |
case 'V': |
1459 |
printf("%s version %s\n", progname, VERSION);
|
1460 |
exit(0);
|
1461 |
case 'h': |
1462 |
usage(progname); |
1463 |
exit(0);
|
1464 |
default:
|
1465 |
usage(progname); |
1466 |
exit(1);
|
1467 |
} |
1468 |
} |
1469 |
|
1470 |
if ((argc - optind) > 1) { |
1471 |
usage(progname); |
1472 |
exit(1);
|
1473 |
} |
1474 |
|
1475 |
bdrv_init(); |
1476 |
|
1477 |
/* initialize commands */
|
1478 |
quit_init(); |
1479 |
help_init(); |
1480 |
add_command(&open_cmd); |
1481 |
add_command(&close_cmd); |
1482 |
add_command(&read_cmd); |
1483 |
add_command(&readv_cmd); |
1484 |
add_command(&write_cmd); |
1485 |
add_command(&writev_cmd); |
1486 |
add_command(&aio_read_cmd); |
1487 |
add_command(&aio_write_cmd); |
1488 |
add_command(&aio_flush_cmd); |
1489 |
add_command(&flush_cmd); |
1490 |
add_command(&truncate_cmd); |
1491 |
add_command(&length_cmd); |
1492 |
add_command(&info_cmd); |
1493 |
add_command(&alloc_cmd); |
1494 |
|
1495 |
add_args_command(init_args_command); |
1496 |
add_check_command(init_check_command); |
1497 |
|
1498 |
/* open the device */
|
1499 |
if (!readonly) {
|
1500 |
flags |= BDRV_O_RDWR; |
1501 |
} |
1502 |
|
1503 |
if ((argc - optind) == 1) |
1504 |
openfile(argv[optind], flags, growable); |
1505 |
command_loop(); |
1506 |
|
1507 |
/*
|
1508 |
* Make sure all outstanding requests get flushed the program exits.
|
1509 |
*/
|
1510 |
qemu_aio_flush(); |
1511 |
|
1512 |
if (bs)
|
1513 |
bdrv_close(bs); |
1514 |
return 0; |
1515 |
} |