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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> |
11 |
#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 "main-loop.h" |
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#include "block/block_int.h" |
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#include "cmd.h" |
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#include "trace/control.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;
|
28 |
static BlockDriverState *bs;
|
29 |
|
30 |
static int misalign; |
31 |
|
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/*
|
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* 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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} |
48 |
|
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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) |
61 |
{ |
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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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} |
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buf = qemu_blockalign(bs, len); |
68 |
memset(buf, pattern, len); |
69 |
if (misalign) {
|
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buf += MISALIGN_OFFSET; |
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} |
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return buf;
|
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} |
74 |
|
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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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} |
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qemu_vfree(p); |
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} |
82 |
|
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static void dump_buffer(const void *buffer, int64_t offset, int len) |
84 |
{ |
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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;
|
90 |
|
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printf("%08" PRIx64 ": ", 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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} |
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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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} |
102 |
} |
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printf("\n");
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} |
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} |
106 |
|
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static void 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 %" 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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} |
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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 = g_new0(size_t, nr_iov); |
136 |
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++) { |
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char *arg = argv[i];
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int64_t len; |
144 |
|
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len = cvtnum(arg); |
146 |
if (len < 0) { |
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printf("non-numeric length argument -- %s\n", arg);
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goto fail;
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} |
150 |
|
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/* should be SIZE_T_MAX, but that doesn't exist */
|
152 |
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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} |
156 |
|
157 |
if (len & 0x1ff) { |
158 |
printf("length argument %" PRId64
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" is not sector aligned\n", len);
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goto fail;
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} |
162 |
|
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sizes[i] = len; |
164 |
count += len; |
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} |
166 |
|
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qemu_iovec_init(qiov, nr_iov); |
168 |
|
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buf = p = qemu_io_alloc(count, pattern); |
170 |
|
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for (i = 0; i < nr_iov; i++) { |
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qemu_iovec_add(qiov, p, sizes[i]); |
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p += sizes[i]; |
174 |
} |
175 |
|
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fail:
|
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g_free(sizes); |
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return buf;
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} |
180 |
|
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static int do_read(char *buf, int64_t offset, int count, int *total) |
182 |
{ |
183 |
int ret;
|
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|
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ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
186 |
if (ret < 0) { |
187 |
return ret;
|
188 |
} |
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*total = count; |
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return 1; |
191 |
} |
192 |
|
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static int do_write(char *buf, int64_t offset, int count, int *total) |
194 |
{ |
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int ret;
|
196 |
|
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ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
198 |
if (ret < 0) { |
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return ret;
|
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} |
201 |
*total = count; |
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return 1; |
203 |
} |
204 |
|
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static int do_pread(char *buf, int64_t offset, int count, int *total) |
206 |
{ |
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*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
208 |
if (*total < 0) { |
209 |
return *total;
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} |
211 |
return 1; |
212 |
} |
213 |
|
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static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
215 |
{ |
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*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
217 |
if (*total < 0) { |
218 |
return *total;
|
219 |
} |
220 |
return 1; |
221 |
} |
222 |
|
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typedef struct { |
224 |
int64_t offset; |
225 |
int count;
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int *total;
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int ret;
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bool done;
|
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} CoWriteZeroes; |
230 |
|
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static void coroutine_fn co_write_zeroes_entry(void *opaque) |
232 |
{ |
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CoWriteZeroes *data = opaque; |
234 |
|
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data->ret = bdrv_co_write_zeroes(bs, data->offset / BDRV_SECTOR_SIZE, |
236 |
data->count / BDRV_SECTOR_SIZE); |
237 |
data->done = true;
|
238 |
if (data->ret < 0) { |
239 |
*data->total = data->ret; |
240 |
return;
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241 |
} |
242 |
|
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*data->total = data->count; |
244 |
} |
245 |
|
246 |
static int do_co_write_zeroes(int64_t offset, int count, int *total) |
247 |
{ |
248 |
Coroutine *co; |
249 |
CoWriteZeroes data = { |
250 |
.offset = offset, |
251 |
.count = count, |
252 |
.total = total, |
253 |
.done = false,
|
254 |
}; |
255 |
|
256 |
co = qemu_coroutine_create(co_write_zeroes_entry); |
257 |
qemu_coroutine_enter(co, &data); |
258 |
while (!data.done) {
|
259 |
qemu_aio_wait(); |
260 |
} |
261 |
if (data.ret < 0) { |
262 |
return data.ret;
|
263 |
} else {
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264 |
return 1; |
265 |
} |
266 |
} |
267 |
|
268 |
static int do_write_compressed(char *buf, int64_t offset, int count, int *total) |
269 |
{ |
270 |
int ret;
|
271 |
|
272 |
ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
273 |
if (ret < 0) { |
274 |
return ret;
|
275 |
} |
276 |
*total = count; |
277 |
return 1; |
278 |
} |
279 |
|
280 |
static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
281 |
{ |
282 |
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
283 |
if (*total < 0) { |
284 |
return *total;
|
285 |
} |
286 |
return 1; |
287 |
} |
288 |
|
289 |
static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
290 |
{ |
291 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
292 |
if (*total < 0) { |
293 |
return *total;
|
294 |
} |
295 |
return 1; |
296 |
} |
297 |
|
298 |
#define NOT_DONE 0x7fffffff |
299 |
static void aio_rw_done(void *opaque, int ret) |
300 |
{ |
301 |
*(int *)opaque = ret;
|
302 |
} |
303 |
|
304 |
static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
305 |
{ |
306 |
int async_ret = NOT_DONE;
|
307 |
|
308 |
bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
309 |
aio_rw_done, &async_ret); |
310 |
while (async_ret == NOT_DONE) {
|
311 |
main_loop_wait(false);
|
312 |
} |
313 |
|
314 |
*total = qiov->size; |
315 |
return async_ret < 0 ? async_ret : 1; |
316 |
} |
317 |
|
318 |
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
319 |
{ |
320 |
int async_ret = NOT_DONE;
|
321 |
|
322 |
bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
323 |
aio_rw_done, &async_ret); |
324 |
while (async_ret == NOT_DONE) {
|
325 |
main_loop_wait(false);
|
326 |
} |
327 |
|
328 |
*total = qiov->size; |
329 |
return async_ret < 0 ? async_ret : 1; |
330 |
} |
331 |
|
332 |
struct multiwrite_async_ret {
|
333 |
int num_done;
|
334 |
int error;
|
335 |
}; |
336 |
|
337 |
static void multiwrite_cb(void *opaque, int ret) |
338 |
{ |
339 |
struct multiwrite_async_ret *async_ret = opaque;
|
340 |
|
341 |
async_ret->num_done++; |
342 |
if (ret < 0) { |
343 |
async_ret->error = ret; |
344 |
} |
345 |
} |
346 |
|
347 |
static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total) |
348 |
{ |
349 |
int i, ret;
|
350 |
struct multiwrite_async_ret async_ret = {
|
351 |
.num_done = 0,
|
352 |
.error = 0,
|
353 |
}; |
354 |
|
355 |
*total = 0;
|
356 |
for (i = 0; i < num_reqs; i++) { |
357 |
reqs[i].cb = multiwrite_cb; |
358 |
reqs[i].opaque = &async_ret; |
359 |
*total += reqs[i].qiov->size; |
360 |
} |
361 |
|
362 |
ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
363 |
if (ret < 0) { |
364 |
return ret;
|
365 |
} |
366 |
|
367 |
while (async_ret.num_done < num_reqs) {
|
368 |
main_loop_wait(false);
|
369 |
} |
370 |
|
371 |
return async_ret.error < 0 ? async_ret.error : 1; |
372 |
} |
373 |
|
374 |
static void read_help(void) |
375 |
{ |
376 |
printf( |
377 |
"\n"
|
378 |
" reads a range of bytes from the given offset\n"
|
379 |
"\n"
|
380 |
" Example:\n"
|
381 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
382 |
"\n"
|
383 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
384 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
385 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
386 |
" -C, -- report statistics in a machine parsable format\n"
|
387 |
" -l, -- length for pattern verification (only with -P)\n"
|
388 |
" -p, -- use bdrv_pread to read the file\n"
|
389 |
" -P, -- use a pattern to verify read data\n"
|
390 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
391 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
392 |
" -v, -- dump buffer to standard output\n"
|
393 |
"\n");
|
394 |
} |
395 |
|
396 |
static int read_f(int argc, char **argv); |
397 |
|
398 |
static const cmdinfo_t read_cmd = { |
399 |
.name = "read",
|
400 |
.altname = "r",
|
401 |
.cfunc = read_f, |
402 |
.argmin = 2,
|
403 |
.argmax = -1,
|
404 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
405 |
.oneline = "reads a number of bytes at a specified offset",
|
406 |
.help = read_help, |
407 |
}; |
408 |
|
409 |
static int read_f(int argc, char **argv) |
410 |
{ |
411 |
struct timeval t1, t2;
|
412 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
413 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
414 |
int c, cnt;
|
415 |
char *buf;
|
416 |
int64_t offset; |
417 |
int count;
|
418 |
/* Some compilers get confused and warn if this is not initialized. */
|
419 |
int total = 0; |
420 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
421 |
|
422 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
423 |
switch (c) {
|
424 |
case 'b': |
425 |
bflag = 1;
|
426 |
break;
|
427 |
case 'C': |
428 |
Cflag = 1;
|
429 |
break;
|
430 |
case 'l': |
431 |
lflag = 1;
|
432 |
pattern_count = cvtnum(optarg); |
433 |
if (pattern_count < 0) { |
434 |
printf("non-numeric length argument -- %s\n", optarg);
|
435 |
return 0; |
436 |
} |
437 |
break;
|
438 |
case 'p': |
439 |
pflag = 1;
|
440 |
break;
|
441 |
case 'P': |
442 |
Pflag = 1;
|
443 |
pattern = parse_pattern(optarg); |
444 |
if (pattern < 0) { |
445 |
return 0; |
446 |
} |
447 |
break;
|
448 |
case 'q': |
449 |
qflag = 1;
|
450 |
break;
|
451 |
case 's': |
452 |
sflag = 1;
|
453 |
pattern_offset = cvtnum(optarg); |
454 |
if (pattern_offset < 0) { |
455 |
printf("non-numeric length argument -- %s\n", optarg);
|
456 |
return 0; |
457 |
} |
458 |
break;
|
459 |
case 'v': |
460 |
vflag = 1;
|
461 |
break;
|
462 |
default:
|
463 |
return command_usage(&read_cmd);
|
464 |
} |
465 |
} |
466 |
|
467 |
if (optind != argc - 2) { |
468 |
return command_usage(&read_cmd);
|
469 |
} |
470 |
|
471 |
if (bflag && pflag) {
|
472 |
printf("-b and -p cannot be specified at the same time\n");
|
473 |
return 0; |
474 |
} |
475 |
|
476 |
offset = cvtnum(argv[optind]); |
477 |
if (offset < 0) { |
478 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
479 |
return 0; |
480 |
} |
481 |
|
482 |
optind++; |
483 |
count = cvtnum(argv[optind]); |
484 |
if (count < 0) { |
485 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
486 |
return 0; |
487 |
} |
488 |
|
489 |
if (!Pflag && (lflag || sflag)) {
|
490 |
return command_usage(&read_cmd);
|
491 |
} |
492 |
|
493 |
if (!lflag) {
|
494 |
pattern_count = count - pattern_offset; |
495 |
} |
496 |
|
497 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
498 |
printf("pattern verification range exceeds end of read data\n");
|
499 |
return 0; |
500 |
} |
501 |
|
502 |
if (!pflag) {
|
503 |
if (offset & 0x1ff) { |
504 |
printf("offset %" PRId64 " is not sector aligned\n", |
505 |
offset); |
506 |
return 0; |
507 |
} |
508 |
if (count & 0x1ff) { |
509 |
printf("count %d is not sector aligned\n",
|
510 |
count); |
511 |
return 0; |
512 |
} |
513 |
} |
514 |
|
515 |
buf = qemu_io_alloc(count, 0xab);
|
516 |
|
517 |
gettimeofday(&t1, NULL);
|
518 |
if (pflag) {
|
519 |
cnt = do_pread(buf, offset, count, &total); |
520 |
} else if (bflag) { |
521 |
cnt = do_load_vmstate(buf, offset, count, &total); |
522 |
} else {
|
523 |
cnt = do_read(buf, offset, count, &total); |
524 |
} |
525 |
gettimeofday(&t2, NULL);
|
526 |
|
527 |
if (cnt < 0) { |
528 |
printf("read failed: %s\n", strerror(-cnt));
|
529 |
goto out;
|
530 |
} |
531 |
|
532 |
if (Pflag) {
|
533 |
void *cmp_buf = g_malloc(pattern_count);
|
534 |
memset(cmp_buf, pattern, pattern_count); |
535 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
536 |
printf("Pattern verification failed at offset %"
|
537 |
PRId64 ", %d bytes\n",
|
538 |
offset + pattern_offset, pattern_count); |
539 |
} |
540 |
g_free(cmp_buf); |
541 |
} |
542 |
|
543 |
if (qflag) {
|
544 |
goto out;
|
545 |
} |
546 |
|
547 |
if (vflag) {
|
548 |
dump_buffer(buf, offset, count); |
549 |
} |
550 |
|
551 |
/* Finally, report back -- -C gives a parsable format */
|
552 |
t2 = tsub(t2, t1); |
553 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
554 |
|
555 |
out:
|
556 |
qemu_io_free(buf); |
557 |
|
558 |
return 0; |
559 |
} |
560 |
|
561 |
static void readv_help(void) |
562 |
{ |
563 |
printf( |
564 |
"\n"
|
565 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
566 |
"\n"
|
567 |
" Example:\n"
|
568 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
569 |
"\n"
|
570 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
571 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
572 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
573 |
" -C, -- report statistics in a machine parsable format\n"
|
574 |
" -P, -- use a pattern to verify read data\n"
|
575 |
" -v, -- dump buffer to standard output\n"
|
576 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
577 |
"\n");
|
578 |
} |
579 |
|
580 |
static int readv_f(int argc, char **argv); |
581 |
|
582 |
static const cmdinfo_t readv_cmd = { |
583 |
.name = "readv",
|
584 |
.cfunc = readv_f, |
585 |
.argmin = 2,
|
586 |
.argmax = -1,
|
587 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
588 |
.oneline = "reads a number of bytes at a specified offset",
|
589 |
.help = readv_help, |
590 |
}; |
591 |
|
592 |
static int readv_f(int argc, char **argv) |
593 |
{ |
594 |
struct timeval t1, t2;
|
595 |
int Cflag = 0, qflag = 0, vflag = 0; |
596 |
int c, cnt;
|
597 |
char *buf;
|
598 |
int64_t offset; |
599 |
/* Some compilers get confused and warn if this is not initialized. */
|
600 |
int total = 0; |
601 |
int nr_iov;
|
602 |
QEMUIOVector qiov; |
603 |
int pattern = 0; |
604 |
int Pflag = 0; |
605 |
|
606 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
607 |
switch (c) {
|
608 |
case 'C': |
609 |
Cflag = 1;
|
610 |
break;
|
611 |
case 'P': |
612 |
Pflag = 1;
|
613 |
pattern = parse_pattern(optarg); |
614 |
if (pattern < 0) { |
615 |
return 0; |
616 |
} |
617 |
break;
|
618 |
case 'q': |
619 |
qflag = 1;
|
620 |
break;
|
621 |
case 'v': |
622 |
vflag = 1;
|
623 |
break;
|
624 |
default:
|
625 |
return command_usage(&readv_cmd);
|
626 |
} |
627 |
} |
628 |
|
629 |
if (optind > argc - 2) { |
630 |
return command_usage(&readv_cmd);
|
631 |
} |
632 |
|
633 |
|
634 |
offset = cvtnum(argv[optind]); |
635 |
if (offset < 0) { |
636 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
637 |
return 0; |
638 |
} |
639 |
optind++; |
640 |
|
641 |
if (offset & 0x1ff) { |
642 |
printf("offset %" PRId64 " is not sector aligned\n", |
643 |
offset); |
644 |
return 0; |
645 |
} |
646 |
|
647 |
nr_iov = argc - optind; |
648 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
649 |
if (buf == NULL) { |
650 |
return 0; |
651 |
} |
652 |
|
653 |
gettimeofday(&t1, NULL);
|
654 |
cnt = do_aio_readv(&qiov, offset, &total); |
655 |
gettimeofday(&t2, NULL);
|
656 |
|
657 |
if (cnt < 0) { |
658 |
printf("readv failed: %s\n", strerror(-cnt));
|
659 |
goto out;
|
660 |
} |
661 |
|
662 |
if (Pflag) {
|
663 |
void *cmp_buf = g_malloc(qiov.size);
|
664 |
memset(cmp_buf, pattern, qiov.size); |
665 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
666 |
printf("Pattern verification failed at offset %"
|
667 |
PRId64 ", %zd bytes\n", offset, qiov.size);
|
668 |
} |
669 |
g_free(cmp_buf); |
670 |
} |
671 |
|
672 |
if (qflag) {
|
673 |
goto out;
|
674 |
} |
675 |
|
676 |
if (vflag) {
|
677 |
dump_buffer(buf, offset, qiov.size); |
678 |
} |
679 |
|
680 |
/* Finally, report back -- -C gives a parsable format */
|
681 |
t2 = tsub(t2, t1); |
682 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
683 |
|
684 |
out:
|
685 |
qemu_iovec_destroy(&qiov); |
686 |
qemu_io_free(buf); |
687 |
return 0; |
688 |
} |
689 |
|
690 |
static void write_help(void) |
691 |
{ |
692 |
printf( |
693 |
"\n"
|
694 |
" writes a range of bytes from the given offset\n"
|
695 |
"\n"
|
696 |
" Example:\n"
|
697 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
698 |
"\n"
|
699 |
" Writes into a segment of the currently open file, using a buffer\n"
|
700 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
701 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
702 |
" -c, -- write compressed data with bdrv_write_compressed\n"
|
703 |
" -p, -- use bdrv_pwrite to write the file\n"
|
704 |
" -P, -- use different pattern to fill file\n"
|
705 |
" -C, -- report statistics in a machine parsable format\n"
|
706 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
707 |
" -z, -- write zeroes using bdrv_co_write_zeroes\n"
|
708 |
"\n");
|
709 |
} |
710 |
|
711 |
static int write_f(int argc, char **argv); |
712 |
|
713 |
static const cmdinfo_t write_cmd = { |
714 |
.name = "write",
|
715 |
.altname = "w",
|
716 |
.cfunc = write_f, |
717 |
.argmin = 2,
|
718 |
.argmax = -1,
|
719 |
.args = "[-bcCpqz] [-P pattern ] off len",
|
720 |
.oneline = "writes a number of bytes at a specified offset",
|
721 |
.help = write_help, |
722 |
}; |
723 |
|
724 |
static int write_f(int argc, char **argv) |
725 |
{ |
726 |
struct timeval t1, t2;
|
727 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; |
728 |
int cflag = 0; |
729 |
int c, cnt;
|
730 |
char *buf = NULL; |
731 |
int64_t offset; |
732 |
int count;
|
733 |
/* Some compilers get confused and warn if this is not initialized. */
|
734 |
int total = 0; |
735 |
int pattern = 0xcd; |
736 |
|
737 |
while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { |
738 |
switch (c) {
|
739 |
case 'b': |
740 |
bflag = 1;
|
741 |
break;
|
742 |
case 'c': |
743 |
cflag = 1;
|
744 |
break;
|
745 |
case 'C': |
746 |
Cflag = 1;
|
747 |
break;
|
748 |
case 'p': |
749 |
pflag = 1;
|
750 |
break;
|
751 |
case 'P': |
752 |
Pflag = 1;
|
753 |
pattern = parse_pattern(optarg); |
754 |
if (pattern < 0) { |
755 |
return 0; |
756 |
} |
757 |
break;
|
758 |
case 'q': |
759 |
qflag = 1;
|
760 |
break;
|
761 |
case 'z': |
762 |
zflag = 1;
|
763 |
break;
|
764 |
default:
|
765 |
return command_usage(&write_cmd);
|
766 |
} |
767 |
} |
768 |
|
769 |
if (optind != argc - 2) { |
770 |
return command_usage(&write_cmd);
|
771 |
} |
772 |
|
773 |
if (bflag + pflag + zflag > 1) { |
774 |
printf("-b, -p, or -z cannot be specified at the same time\n");
|
775 |
return 0; |
776 |
} |
777 |
|
778 |
if (zflag && Pflag) {
|
779 |
printf("-z and -P cannot be specified at the same time\n");
|
780 |
return 0; |
781 |
} |
782 |
|
783 |
offset = cvtnum(argv[optind]); |
784 |
if (offset < 0) { |
785 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
786 |
return 0; |
787 |
} |
788 |
|
789 |
optind++; |
790 |
count = cvtnum(argv[optind]); |
791 |
if (count < 0) { |
792 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
793 |
return 0; |
794 |
} |
795 |
|
796 |
if (!pflag) {
|
797 |
if (offset & 0x1ff) { |
798 |
printf("offset %" PRId64 " is not sector aligned\n", |
799 |
offset); |
800 |
return 0; |
801 |
} |
802 |
|
803 |
if (count & 0x1ff) { |
804 |
printf("count %d is not sector aligned\n",
|
805 |
count); |
806 |
return 0; |
807 |
} |
808 |
} |
809 |
|
810 |
if (!zflag) {
|
811 |
buf = qemu_io_alloc(count, pattern); |
812 |
} |
813 |
|
814 |
gettimeofday(&t1, NULL);
|
815 |
if (pflag) {
|
816 |
cnt = do_pwrite(buf, offset, count, &total); |
817 |
} else if (bflag) { |
818 |
cnt = do_save_vmstate(buf, offset, count, &total); |
819 |
} else if (zflag) { |
820 |
cnt = do_co_write_zeroes(offset, count, &total); |
821 |
} else if (cflag) { |
822 |
cnt = do_write_compressed(buf, offset, count, &total); |
823 |
} else {
|
824 |
cnt = do_write(buf, offset, count, &total); |
825 |
} |
826 |
gettimeofday(&t2, NULL);
|
827 |
|
828 |
if (cnt < 0) { |
829 |
printf("write failed: %s\n", strerror(-cnt));
|
830 |
goto out;
|
831 |
} |
832 |
|
833 |
if (qflag) {
|
834 |
goto out;
|
835 |
} |
836 |
|
837 |
/* Finally, report back -- -C gives a parsable format */
|
838 |
t2 = tsub(t2, t1); |
839 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
840 |
|
841 |
out:
|
842 |
if (!zflag) {
|
843 |
qemu_io_free(buf); |
844 |
} |
845 |
|
846 |
return 0; |
847 |
} |
848 |
|
849 |
static void |
850 |
writev_help(void)
|
851 |
{ |
852 |
printf( |
853 |
"\n"
|
854 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
855 |
"\n"
|
856 |
" Example:\n"
|
857 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
858 |
"\n"
|
859 |
" Writes into a segment of the currently open file, using a buffer\n"
|
860 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
861 |
" -P, -- use different pattern to fill file\n"
|
862 |
" -C, -- report statistics in a machine parsable format\n"
|
863 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
864 |
"\n");
|
865 |
} |
866 |
|
867 |
static int writev_f(int argc, char **argv); |
868 |
|
869 |
static const cmdinfo_t writev_cmd = { |
870 |
.name = "writev",
|
871 |
.cfunc = writev_f, |
872 |
.argmin = 2,
|
873 |
.argmax = -1,
|
874 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
875 |
.oneline = "writes a number of bytes at a specified offset",
|
876 |
.help = writev_help, |
877 |
}; |
878 |
|
879 |
static int writev_f(int argc, char **argv) |
880 |
{ |
881 |
struct timeval t1, t2;
|
882 |
int Cflag = 0, qflag = 0; |
883 |
int c, cnt;
|
884 |
char *buf;
|
885 |
int64_t offset; |
886 |
/* Some compilers get confused and warn if this is not initialized. */
|
887 |
int total = 0; |
888 |
int nr_iov;
|
889 |
int pattern = 0xcd; |
890 |
QEMUIOVector qiov; |
891 |
|
892 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
893 |
switch (c) {
|
894 |
case 'C': |
895 |
Cflag = 1;
|
896 |
break;
|
897 |
case 'q': |
898 |
qflag = 1;
|
899 |
break;
|
900 |
case 'P': |
901 |
pattern = parse_pattern(optarg); |
902 |
if (pattern < 0) { |
903 |
return 0; |
904 |
} |
905 |
break;
|
906 |
default:
|
907 |
return command_usage(&writev_cmd);
|
908 |
} |
909 |
} |
910 |
|
911 |
if (optind > argc - 2) { |
912 |
return command_usage(&writev_cmd);
|
913 |
} |
914 |
|
915 |
offset = cvtnum(argv[optind]); |
916 |
if (offset < 0) { |
917 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
918 |
return 0; |
919 |
} |
920 |
optind++; |
921 |
|
922 |
if (offset & 0x1ff) { |
923 |
printf("offset %" PRId64 " is not sector aligned\n", |
924 |
offset); |
925 |
return 0; |
926 |
} |
927 |
|
928 |
nr_iov = argc - optind; |
929 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
930 |
if (buf == NULL) { |
931 |
return 0; |
932 |
} |
933 |
|
934 |
gettimeofday(&t1, NULL);
|
935 |
cnt = do_aio_writev(&qiov, offset, &total); |
936 |
gettimeofday(&t2, NULL);
|
937 |
|
938 |
if (cnt < 0) { |
939 |
printf("writev failed: %s\n", strerror(-cnt));
|
940 |
goto out;
|
941 |
} |
942 |
|
943 |
if (qflag) {
|
944 |
goto out;
|
945 |
} |
946 |
|
947 |
/* Finally, report back -- -C gives a parsable format */
|
948 |
t2 = tsub(t2, t1); |
949 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
950 |
out:
|
951 |
qemu_iovec_destroy(&qiov); |
952 |
qemu_io_free(buf); |
953 |
return 0; |
954 |
} |
955 |
|
956 |
static void multiwrite_help(void) |
957 |
{ |
958 |
printf( |
959 |
"\n"
|
960 |
" writes a range of bytes from the given offset source from multiple buffers,\n"
|
961 |
" in a batch of requests that may be merged by qemu\n"
|
962 |
"\n"
|
963 |
" Example:\n"
|
964 |
" 'multiwrite 512 1k 1k ; 4k 1k'\n"
|
965 |
" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
966 |
"\n"
|
967 |
" Writes into a segment of the currently open file, using a buffer\n"
|
968 |
" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
969 |
" by one for each request contained in the multiwrite command.\n"
|
970 |
" -P, -- use different pattern to fill file\n"
|
971 |
" -C, -- report statistics in a machine parsable format\n"
|
972 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
973 |
"\n");
|
974 |
} |
975 |
|
976 |
static int multiwrite_f(int argc, char **argv); |
977 |
|
978 |
static const cmdinfo_t multiwrite_cmd = { |
979 |
.name = "multiwrite",
|
980 |
.cfunc = multiwrite_f, |
981 |
.argmin = 2,
|
982 |
.argmax = -1,
|
983 |
.args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
984 |
.oneline = "issues multiple write requests at once",
|
985 |
.help = multiwrite_help, |
986 |
}; |
987 |
|
988 |
static int multiwrite_f(int argc, char **argv) |
989 |
{ |
990 |
struct timeval t1, t2;
|
991 |
int Cflag = 0, qflag = 0; |
992 |
int c, cnt;
|
993 |
char **buf;
|
994 |
int64_t offset, first_offset = 0;
|
995 |
/* Some compilers get confused and warn if this is not initialized. */
|
996 |
int total = 0; |
997 |
int nr_iov;
|
998 |
int nr_reqs;
|
999 |
int pattern = 0xcd; |
1000 |
QEMUIOVector *qiovs; |
1001 |
int i;
|
1002 |
BlockRequest *reqs; |
1003 |
|
1004 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1005 |
switch (c) {
|
1006 |
case 'C': |
1007 |
Cflag = 1;
|
1008 |
break;
|
1009 |
case 'q': |
1010 |
qflag = 1;
|
1011 |
break;
|
1012 |
case 'P': |
1013 |
pattern = parse_pattern(optarg); |
1014 |
if (pattern < 0) { |
1015 |
return 0; |
1016 |
} |
1017 |
break;
|
1018 |
default:
|
1019 |
return command_usage(&writev_cmd);
|
1020 |
} |
1021 |
} |
1022 |
|
1023 |
if (optind > argc - 2) { |
1024 |
return command_usage(&writev_cmd);
|
1025 |
} |
1026 |
|
1027 |
nr_reqs = 1;
|
1028 |
for (i = optind; i < argc; i++) {
|
1029 |
if (!strcmp(argv[i], ";")) { |
1030 |
nr_reqs++; |
1031 |
} |
1032 |
} |
1033 |
|
1034 |
reqs = g_malloc0(nr_reqs * sizeof(*reqs));
|
1035 |
buf = g_malloc0(nr_reqs * sizeof(*buf));
|
1036 |
qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
|
1037 |
|
1038 |
for (i = 0; i < nr_reqs && optind < argc; i++) { |
1039 |
int j;
|
1040 |
|
1041 |
/* Read the offset of the request */
|
1042 |
offset = cvtnum(argv[optind]); |
1043 |
if (offset < 0) { |
1044 |
printf("non-numeric offset argument -- %s\n", argv[optind]);
|
1045 |
goto out;
|
1046 |
} |
1047 |
optind++; |
1048 |
|
1049 |
if (offset & 0x1ff) { |
1050 |
printf("offset %lld is not sector aligned\n",
|
1051 |
(long long)offset); |
1052 |
goto out;
|
1053 |
} |
1054 |
|
1055 |
if (i == 0) { |
1056 |
first_offset = offset; |
1057 |
} |
1058 |
|
1059 |
/* Read lengths for qiov entries */
|
1060 |
for (j = optind; j < argc; j++) {
|
1061 |
if (!strcmp(argv[j], ";")) { |
1062 |
break;
|
1063 |
} |
1064 |
} |
1065 |
|
1066 |
nr_iov = j - optind; |
1067 |
|
1068 |
/* Build request */
|
1069 |
buf[i] = create_iovec(&qiovs[i], &argv[optind], nr_iov, pattern); |
1070 |
if (buf[i] == NULL) { |
1071 |
goto out;
|
1072 |
} |
1073 |
|
1074 |
reqs[i].qiov = &qiovs[i]; |
1075 |
reqs[i].sector = offset >> 9;
|
1076 |
reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
1077 |
|
1078 |
optind = j + 1;
|
1079 |
|
1080 |
pattern++; |
1081 |
} |
1082 |
|
1083 |
/* If there were empty requests at the end, ignore them */
|
1084 |
nr_reqs = i; |
1085 |
|
1086 |
gettimeofday(&t1, NULL);
|
1087 |
cnt = do_aio_multiwrite(reqs, nr_reqs, &total); |
1088 |
gettimeofday(&t2, NULL);
|
1089 |
|
1090 |
if (cnt < 0) { |
1091 |
printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
1092 |
goto out;
|
1093 |
} |
1094 |
|
1095 |
if (qflag) {
|
1096 |
goto out;
|
1097 |
} |
1098 |
|
1099 |
/* Finally, report back -- -C gives a parsable format */
|
1100 |
t2 = tsub(t2, t1); |
1101 |
print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
1102 |
out:
|
1103 |
for (i = 0; i < nr_reqs; i++) { |
1104 |
qemu_io_free(buf[i]); |
1105 |
if (reqs[i].qiov != NULL) { |
1106 |
qemu_iovec_destroy(&qiovs[i]); |
1107 |
} |
1108 |
} |
1109 |
g_free(buf); |
1110 |
g_free(reqs); |
1111 |
g_free(qiovs); |
1112 |
return 0; |
1113 |
} |
1114 |
|
1115 |
struct aio_ctx {
|
1116 |
QEMUIOVector qiov; |
1117 |
int64_t offset; |
1118 |
char *buf;
|
1119 |
int qflag;
|
1120 |
int vflag;
|
1121 |
int Cflag;
|
1122 |
int Pflag;
|
1123 |
int pattern;
|
1124 |
struct timeval t1;
|
1125 |
}; |
1126 |
|
1127 |
static void aio_write_done(void *opaque, int ret) |
1128 |
{ |
1129 |
struct aio_ctx *ctx = opaque;
|
1130 |
struct timeval t2;
|
1131 |
|
1132 |
gettimeofday(&t2, NULL);
|
1133 |
|
1134 |
|
1135 |
if (ret < 0) { |
1136 |
printf("aio_write failed: %s\n", strerror(-ret));
|
1137 |
goto out;
|
1138 |
} |
1139 |
|
1140 |
if (ctx->qflag) {
|
1141 |
goto out;
|
1142 |
} |
1143 |
|
1144 |
/* Finally, report back -- -C gives a parsable format */
|
1145 |
t2 = tsub(t2, ctx->t1); |
1146 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
1147 |
ctx->qiov.size, 1, ctx->Cflag);
|
1148 |
out:
|
1149 |
qemu_io_free(ctx->buf); |
1150 |
qemu_iovec_destroy(&ctx->qiov); |
1151 |
g_free(ctx); |
1152 |
} |
1153 |
|
1154 |
static void aio_read_done(void *opaque, int ret) |
1155 |
{ |
1156 |
struct aio_ctx *ctx = opaque;
|
1157 |
struct timeval t2;
|
1158 |
|
1159 |
gettimeofday(&t2, NULL);
|
1160 |
|
1161 |
if (ret < 0) { |
1162 |
printf("readv failed: %s\n", strerror(-ret));
|
1163 |
goto out;
|
1164 |
} |
1165 |
|
1166 |
if (ctx->Pflag) {
|
1167 |
void *cmp_buf = g_malloc(ctx->qiov.size);
|
1168 |
|
1169 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
1170 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
1171 |
printf("Pattern verification failed at offset %"
|
1172 |
PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
|
1173 |
} |
1174 |
g_free(cmp_buf); |
1175 |
} |
1176 |
|
1177 |
if (ctx->qflag) {
|
1178 |
goto out;
|
1179 |
} |
1180 |
|
1181 |
if (ctx->vflag) {
|
1182 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
1183 |
} |
1184 |
|
1185 |
/* Finally, report back -- -C gives a parsable format */
|
1186 |
t2 = tsub(t2, ctx->t1); |
1187 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
1188 |
ctx->qiov.size, 1, ctx->Cflag);
|
1189 |
out:
|
1190 |
qemu_io_free(ctx->buf); |
1191 |
qemu_iovec_destroy(&ctx->qiov); |
1192 |
g_free(ctx); |
1193 |
} |
1194 |
|
1195 |
static void aio_read_help(void) |
1196 |
{ |
1197 |
printf( |
1198 |
"\n"
|
1199 |
" asynchronously reads a range of bytes from the given offset\n"
|
1200 |
"\n"
|
1201 |
" Example:\n"
|
1202 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
1203 |
"\n"
|
1204 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
1205 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
1206 |
" The read is performed asynchronously and the aio_flush command must be\n"
|
1207 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1208 |
" -C, -- report statistics in a machine parsable format\n"
|
1209 |
" -P, -- use a pattern to verify read data\n"
|
1210 |
" -v, -- dump buffer to standard output\n"
|
1211 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1212 |
"\n");
|
1213 |
} |
1214 |
|
1215 |
static int aio_read_f(int argc, char **argv); |
1216 |
|
1217 |
static const cmdinfo_t aio_read_cmd = { |
1218 |
.name = "aio_read",
|
1219 |
.cfunc = aio_read_f, |
1220 |
.argmin = 2,
|
1221 |
.argmax = -1,
|
1222 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
1223 |
.oneline = "asynchronously reads a number of bytes",
|
1224 |
.help = aio_read_help, |
1225 |
}; |
1226 |
|
1227 |
static int aio_read_f(int argc, char **argv) |
1228 |
{ |
1229 |
int nr_iov, c;
|
1230 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1231 |
|
1232 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
1233 |
switch (c) {
|
1234 |
case 'C': |
1235 |
ctx->Cflag = 1;
|
1236 |
break;
|
1237 |
case 'P': |
1238 |
ctx->Pflag = 1;
|
1239 |
ctx->pattern = parse_pattern(optarg); |
1240 |
if (ctx->pattern < 0) { |
1241 |
g_free(ctx); |
1242 |
return 0; |
1243 |
} |
1244 |
break;
|
1245 |
case 'q': |
1246 |
ctx->qflag = 1;
|
1247 |
break;
|
1248 |
case 'v': |
1249 |
ctx->vflag = 1;
|
1250 |
break;
|
1251 |
default:
|
1252 |
g_free(ctx); |
1253 |
return command_usage(&aio_read_cmd);
|
1254 |
} |
1255 |
} |
1256 |
|
1257 |
if (optind > argc - 2) { |
1258 |
g_free(ctx); |
1259 |
return command_usage(&aio_read_cmd);
|
1260 |
} |
1261 |
|
1262 |
ctx->offset = cvtnum(argv[optind]); |
1263 |
if (ctx->offset < 0) { |
1264 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1265 |
g_free(ctx); |
1266 |
return 0; |
1267 |
} |
1268 |
optind++; |
1269 |
|
1270 |
if (ctx->offset & 0x1ff) { |
1271 |
printf("offset %" PRId64 " is not sector aligned\n", |
1272 |
ctx->offset); |
1273 |
g_free(ctx); |
1274 |
return 0; |
1275 |
} |
1276 |
|
1277 |
nr_iov = argc - optind; |
1278 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
1279 |
if (ctx->buf == NULL) { |
1280 |
g_free(ctx); |
1281 |
return 0; |
1282 |
} |
1283 |
|
1284 |
gettimeofday(&ctx->t1, NULL);
|
1285 |
bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
1286 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
1287 |
return 0; |
1288 |
} |
1289 |
|
1290 |
static void aio_write_help(void) |
1291 |
{ |
1292 |
printf( |
1293 |
"\n"
|
1294 |
" asynchronously writes a range of bytes from the given offset source\n"
|
1295 |
" from multiple buffers\n"
|
1296 |
"\n"
|
1297 |
" Example:\n"
|
1298 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1299 |
"\n"
|
1300 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1301 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1302 |
" The write is performed asynchronously and the aio_flush command must be\n"
|
1303 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1304 |
" -P, -- use different pattern to fill file\n"
|
1305 |
" -C, -- report statistics in a machine parsable format\n"
|
1306 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1307 |
"\n");
|
1308 |
} |
1309 |
|
1310 |
static int aio_write_f(int argc, char **argv); |
1311 |
|
1312 |
static const cmdinfo_t aio_write_cmd = { |
1313 |
.name = "aio_write",
|
1314 |
.cfunc = aio_write_f, |
1315 |
.argmin = 2,
|
1316 |
.argmax = -1,
|
1317 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1318 |
.oneline = "asynchronously writes a number of bytes",
|
1319 |
.help = aio_write_help, |
1320 |
}; |
1321 |
|
1322 |
static int aio_write_f(int argc, char **argv) |
1323 |
{ |
1324 |
int nr_iov, c;
|
1325 |
int pattern = 0xcd; |
1326 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1327 |
|
1328 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1329 |
switch (c) {
|
1330 |
case 'C': |
1331 |
ctx->Cflag = 1;
|
1332 |
break;
|
1333 |
case 'q': |
1334 |
ctx->qflag = 1;
|
1335 |
break;
|
1336 |
case 'P': |
1337 |
pattern = parse_pattern(optarg); |
1338 |
if (pattern < 0) { |
1339 |
g_free(ctx); |
1340 |
return 0; |
1341 |
} |
1342 |
break;
|
1343 |
default:
|
1344 |
g_free(ctx); |
1345 |
return command_usage(&aio_write_cmd);
|
1346 |
} |
1347 |
} |
1348 |
|
1349 |
if (optind > argc - 2) { |
1350 |
g_free(ctx); |
1351 |
return command_usage(&aio_write_cmd);
|
1352 |
} |
1353 |
|
1354 |
ctx->offset = cvtnum(argv[optind]); |
1355 |
if (ctx->offset < 0) { |
1356 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1357 |
g_free(ctx); |
1358 |
return 0; |
1359 |
} |
1360 |
optind++; |
1361 |
|
1362 |
if (ctx->offset & 0x1ff) { |
1363 |
printf("offset %" PRId64 " is not sector aligned\n", |
1364 |
ctx->offset); |
1365 |
g_free(ctx); |
1366 |
return 0; |
1367 |
} |
1368 |
|
1369 |
nr_iov = argc - optind; |
1370 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1371 |
if (ctx->buf == NULL) { |
1372 |
g_free(ctx); |
1373 |
return 0; |
1374 |
} |
1375 |
|
1376 |
gettimeofday(&ctx->t1, NULL);
|
1377 |
bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1378 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1379 |
return 0; |
1380 |
} |
1381 |
|
1382 |
static int aio_flush_f(int argc, char **argv) |
1383 |
{ |
1384 |
bdrv_drain_all(); |
1385 |
return 0; |
1386 |
} |
1387 |
|
1388 |
static const cmdinfo_t aio_flush_cmd = { |
1389 |
.name = "aio_flush",
|
1390 |
.cfunc = aio_flush_f, |
1391 |
.oneline = "completes all outstanding aio requests"
|
1392 |
}; |
1393 |
|
1394 |
static int flush_f(int argc, char **argv) |
1395 |
{ |
1396 |
bdrv_flush(bs); |
1397 |
return 0; |
1398 |
} |
1399 |
|
1400 |
static const cmdinfo_t flush_cmd = { |
1401 |
.name = "flush",
|
1402 |
.altname = "f",
|
1403 |
.cfunc = flush_f, |
1404 |
.oneline = "flush all in-core file state to disk",
|
1405 |
}; |
1406 |
|
1407 |
static int truncate_f(int argc, char **argv) |
1408 |
{ |
1409 |
int64_t offset; |
1410 |
int ret;
|
1411 |
|
1412 |
offset = cvtnum(argv[1]);
|
1413 |
if (offset < 0) { |
1414 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1415 |
return 0; |
1416 |
} |
1417 |
|
1418 |
ret = bdrv_truncate(bs, offset); |
1419 |
if (ret < 0) { |
1420 |
printf("truncate: %s\n", strerror(-ret));
|
1421 |
return 0; |
1422 |
} |
1423 |
|
1424 |
return 0; |
1425 |
} |
1426 |
|
1427 |
static const cmdinfo_t truncate_cmd = { |
1428 |
.name = "truncate",
|
1429 |
.altname = "t",
|
1430 |
.cfunc = truncate_f, |
1431 |
.argmin = 1,
|
1432 |
.argmax = 1,
|
1433 |
.args = "off",
|
1434 |
.oneline = "truncates the current file at the given offset",
|
1435 |
}; |
1436 |
|
1437 |
static int length_f(int argc, char **argv) |
1438 |
{ |
1439 |
int64_t size; |
1440 |
char s1[64]; |
1441 |
|
1442 |
size = bdrv_getlength(bs); |
1443 |
if (size < 0) { |
1444 |
printf("getlength: %s\n", strerror(-size));
|
1445 |
return 0; |
1446 |
} |
1447 |
|
1448 |
cvtstr(size, s1, sizeof(s1));
|
1449 |
printf("%s\n", s1);
|
1450 |
return 0; |
1451 |
} |
1452 |
|
1453 |
|
1454 |
static const cmdinfo_t length_cmd = { |
1455 |
.name = "length",
|
1456 |
.altname = "l",
|
1457 |
.cfunc = length_f, |
1458 |
.oneline = "gets the length of the current file",
|
1459 |
}; |
1460 |
|
1461 |
|
1462 |
static int info_f(int argc, char **argv) |
1463 |
{ |
1464 |
BlockDriverInfo bdi; |
1465 |
char s1[64], s2[64]; |
1466 |
int ret;
|
1467 |
|
1468 |
if (bs->drv && bs->drv->format_name) {
|
1469 |
printf("format name: %s\n", bs->drv->format_name);
|
1470 |
} |
1471 |
if (bs->drv && bs->drv->protocol_name) {
|
1472 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1473 |
} |
1474 |
|
1475 |
ret = bdrv_get_info(bs, &bdi); |
1476 |
if (ret) {
|
1477 |
return 0; |
1478 |
} |
1479 |
|
1480 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1481 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1482 |
|
1483 |
printf("cluster size: %s\n", s1);
|
1484 |
printf("vm state offset: %s\n", s2);
|
1485 |
|
1486 |
return 0; |
1487 |
} |
1488 |
|
1489 |
|
1490 |
|
1491 |
static const cmdinfo_t info_cmd = { |
1492 |
.name = "info",
|
1493 |
.altname = "i",
|
1494 |
.cfunc = info_f, |
1495 |
.oneline = "prints information about the current file",
|
1496 |
}; |
1497 |
|
1498 |
static void discard_help(void) |
1499 |
{ |
1500 |
printf( |
1501 |
"\n"
|
1502 |
" discards a range of bytes from the given offset\n"
|
1503 |
"\n"
|
1504 |
" Example:\n"
|
1505 |
" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
|
1506 |
"\n"
|
1507 |
" Discards a segment of the currently open file.\n"
|
1508 |
" -C, -- report statistics in a machine parsable format\n"
|
1509 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1510 |
"\n");
|
1511 |
} |
1512 |
|
1513 |
static int discard_f(int argc, char **argv); |
1514 |
|
1515 |
static const cmdinfo_t discard_cmd = { |
1516 |
.name = "discard",
|
1517 |
.altname = "d",
|
1518 |
.cfunc = discard_f, |
1519 |
.argmin = 2,
|
1520 |
.argmax = -1,
|
1521 |
.args = "[-Cq] off len",
|
1522 |
.oneline = "discards a number of bytes at a specified offset",
|
1523 |
.help = discard_help, |
1524 |
}; |
1525 |
|
1526 |
static int discard_f(int argc, char **argv) |
1527 |
{ |
1528 |
struct timeval t1, t2;
|
1529 |
int Cflag = 0, qflag = 0; |
1530 |
int c, ret;
|
1531 |
int64_t offset; |
1532 |
int count;
|
1533 |
|
1534 |
while ((c = getopt(argc, argv, "Cq")) != EOF) { |
1535 |
switch (c) {
|
1536 |
case 'C': |
1537 |
Cflag = 1;
|
1538 |
break;
|
1539 |
case 'q': |
1540 |
qflag = 1;
|
1541 |
break;
|
1542 |
default:
|
1543 |
return command_usage(&discard_cmd);
|
1544 |
} |
1545 |
} |
1546 |
|
1547 |
if (optind != argc - 2) { |
1548 |
return command_usage(&discard_cmd);
|
1549 |
} |
1550 |
|
1551 |
offset = cvtnum(argv[optind]); |
1552 |
if (offset < 0) { |
1553 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1554 |
return 0; |
1555 |
} |
1556 |
|
1557 |
optind++; |
1558 |
count = cvtnum(argv[optind]); |
1559 |
if (count < 0) { |
1560 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1561 |
return 0; |
1562 |
} |
1563 |
|
1564 |
gettimeofday(&t1, NULL);
|
1565 |
ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, |
1566 |
count >> BDRV_SECTOR_BITS); |
1567 |
gettimeofday(&t2, NULL);
|
1568 |
|
1569 |
if (ret < 0) { |
1570 |
printf("discard failed: %s\n", strerror(-ret));
|
1571 |
goto out;
|
1572 |
} |
1573 |
|
1574 |
/* Finally, report back -- -C gives a parsable format */
|
1575 |
if (!qflag) {
|
1576 |
t2 = tsub(t2, t1); |
1577 |
print_report("discard", &t2, offset, count, count, 1, Cflag); |
1578 |
} |
1579 |
|
1580 |
out:
|
1581 |
return 0; |
1582 |
} |
1583 |
|
1584 |
static int alloc_f(int argc, char **argv) |
1585 |
{ |
1586 |
int64_t offset, sector_num; |
1587 |
int nb_sectors, remaining;
|
1588 |
char s1[64]; |
1589 |
int num, sum_alloc;
|
1590 |
int ret;
|
1591 |
|
1592 |
offset = cvtnum(argv[1]);
|
1593 |
if (offset & 0x1ff) { |
1594 |
printf("offset %" PRId64 " is not sector aligned\n", |
1595 |
offset); |
1596 |
return 0; |
1597 |
} |
1598 |
|
1599 |
if (argc == 3) { |
1600 |
nb_sectors = cvtnum(argv[2]);
|
1601 |
} else {
|
1602 |
nb_sectors = 1;
|
1603 |
} |
1604 |
|
1605 |
remaining = nb_sectors; |
1606 |
sum_alloc = 0;
|
1607 |
sector_num = offset >> 9;
|
1608 |
while (remaining) {
|
1609 |
ret = bdrv_is_allocated(bs, sector_num, remaining, &num); |
1610 |
sector_num += num; |
1611 |
remaining -= num; |
1612 |
if (ret) {
|
1613 |
sum_alloc += num; |
1614 |
} |
1615 |
if (num == 0) { |
1616 |
nb_sectors -= remaining; |
1617 |
remaining = 0;
|
1618 |
} |
1619 |
} |
1620 |
|
1621 |
cvtstr(offset, s1, sizeof(s1));
|
1622 |
|
1623 |
printf("%d/%d sectors allocated at offset %s\n",
|
1624 |
sum_alloc, nb_sectors, s1); |
1625 |
return 0; |
1626 |
} |
1627 |
|
1628 |
static const cmdinfo_t alloc_cmd = { |
1629 |
.name = "alloc",
|
1630 |
.altname = "a",
|
1631 |
.argmin = 1,
|
1632 |
.argmax = 2,
|
1633 |
.cfunc = alloc_f, |
1634 |
.args = "off [sectors]",
|
1635 |
.oneline = "checks if a sector is present in the file",
|
1636 |
}; |
1637 |
|
1638 |
static int map_f(int argc, char **argv) |
1639 |
{ |
1640 |
int64_t offset; |
1641 |
int64_t nb_sectors; |
1642 |
char s1[64]; |
1643 |
int num, num_checked;
|
1644 |
int ret;
|
1645 |
const char *retstr; |
1646 |
|
1647 |
offset = 0;
|
1648 |
nb_sectors = bs->total_sectors; |
1649 |
|
1650 |
do {
|
1651 |
num_checked = MIN(nb_sectors, INT_MAX); |
1652 |
ret = bdrv_is_allocated(bs, offset, num_checked, &num); |
1653 |
retstr = ret ? " allocated" : "not allocated"; |
1654 |
cvtstr(offset << 9ULL, s1, sizeof(s1)); |
1655 |
printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n", |
1656 |
offset << 9ULL, num, num_checked, retstr, s1, ret);
|
1657 |
|
1658 |
offset += num; |
1659 |
nb_sectors -= num; |
1660 |
} while (offset < bs->total_sectors);
|
1661 |
|
1662 |
return 0; |
1663 |
} |
1664 |
|
1665 |
static const cmdinfo_t map_cmd = { |
1666 |
.name = "map",
|
1667 |
.argmin = 0,
|
1668 |
.argmax = 0,
|
1669 |
.cfunc = map_f, |
1670 |
.args = "",
|
1671 |
.oneline = "prints the allocated areas of a file",
|
1672 |
}; |
1673 |
|
1674 |
static int break_f(int argc, char **argv) |
1675 |
{ |
1676 |
int ret;
|
1677 |
|
1678 |
ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); |
1679 |
if (ret < 0) { |
1680 |
printf("Could not set breakpoint: %s\n", strerror(-ret));
|
1681 |
} |
1682 |
|
1683 |
return 0; |
1684 |
} |
1685 |
|
1686 |
static const cmdinfo_t break_cmd = { |
1687 |
.name = "break",
|
1688 |
.argmin = 2,
|
1689 |
.argmax = 2,
|
1690 |
.cfunc = break_f, |
1691 |
.args = "event tag",
|
1692 |
.oneline = "sets a breakpoint on event and tags the stopped "
|
1693 |
"request as tag",
|
1694 |
}; |
1695 |
|
1696 |
static int resume_f(int argc, char **argv) |
1697 |
{ |
1698 |
int ret;
|
1699 |
|
1700 |
ret = bdrv_debug_resume(bs, argv[1]);
|
1701 |
if (ret < 0) { |
1702 |
printf("Could not resume request: %s\n", strerror(-ret));
|
1703 |
} |
1704 |
|
1705 |
return 0; |
1706 |
} |
1707 |
|
1708 |
static const cmdinfo_t resume_cmd = { |
1709 |
.name = "resume",
|
1710 |
.argmin = 1,
|
1711 |
.argmax = 1,
|
1712 |
.cfunc = resume_f, |
1713 |
.args = "tag",
|
1714 |
.oneline = "resumes the request tagged as tag",
|
1715 |
}; |
1716 |
|
1717 |
static int wait_break_f(int argc, char **argv) |
1718 |
{ |
1719 |
while (!bdrv_debug_is_suspended(bs, argv[1])) { |
1720 |
qemu_aio_wait(); |
1721 |
} |
1722 |
|
1723 |
return 0; |
1724 |
} |
1725 |
|
1726 |
static const cmdinfo_t wait_break_cmd = { |
1727 |
.name = "wait_break",
|
1728 |
.argmin = 1,
|
1729 |
.argmax = 1,
|
1730 |
.cfunc = wait_break_f, |
1731 |
.args = "tag",
|
1732 |
.oneline = "waits for the suspension of a request",
|
1733 |
}; |
1734 |
|
1735 |
static int abort_f(int argc, char **argv) |
1736 |
{ |
1737 |
abort(); |
1738 |
} |
1739 |
|
1740 |
static const cmdinfo_t abort_cmd = { |
1741 |
.name = "abort",
|
1742 |
.cfunc = abort_f, |
1743 |
.flags = CMD_NOFILE_OK, |
1744 |
.oneline = "simulate a program crash using abort(3)",
|
1745 |
}; |
1746 |
|
1747 |
static int close_f(int argc, char **argv) |
1748 |
{ |
1749 |
bdrv_delete(bs); |
1750 |
bs = NULL;
|
1751 |
return 0; |
1752 |
} |
1753 |
|
1754 |
static const cmdinfo_t close_cmd = { |
1755 |
.name = "close",
|
1756 |
.altname = "c",
|
1757 |
.cfunc = close_f, |
1758 |
.oneline = "close the current open file",
|
1759 |
}; |
1760 |
|
1761 |
static int openfile(char *name, int flags, int growable) |
1762 |
{ |
1763 |
if (bs) {
|
1764 |
fprintf(stderr, "file open already, try 'help close'\n");
|
1765 |
return 1; |
1766 |
} |
1767 |
|
1768 |
if (growable) {
|
1769 |
if (bdrv_file_open(&bs, name, flags)) {
|
1770 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1771 |
return 1; |
1772 |
} |
1773 |
} else {
|
1774 |
bs = bdrv_new("hda");
|
1775 |
|
1776 |
if (bdrv_open(bs, name, flags, NULL) < 0) { |
1777 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1778 |
bdrv_delete(bs); |
1779 |
bs = NULL;
|
1780 |
return 1; |
1781 |
} |
1782 |
} |
1783 |
|
1784 |
return 0; |
1785 |
} |
1786 |
|
1787 |
static void open_help(void) |
1788 |
{ |
1789 |
printf( |
1790 |
"\n"
|
1791 |
" opens a new file in the requested mode\n"
|
1792 |
"\n"
|
1793 |
" Example:\n"
|
1794 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1795 |
"\n"
|
1796 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1797 |
" -r, -- open file read-only\n"
|
1798 |
" -s, -- use snapshot file\n"
|
1799 |
" -n, -- disable host cache\n"
|
1800 |
" -g, -- allow file to grow (only applies to protocols)"
|
1801 |
"\n");
|
1802 |
} |
1803 |
|
1804 |
static int open_f(int argc, char **argv); |
1805 |
|
1806 |
static const cmdinfo_t open_cmd = { |
1807 |
.name = "open",
|
1808 |
.altname = "o",
|
1809 |
.cfunc = open_f, |
1810 |
.argmin = 1,
|
1811 |
.argmax = -1,
|
1812 |
.flags = CMD_NOFILE_OK, |
1813 |
.args = "[-Crsn] [path]",
|
1814 |
.oneline = "open the file specified by path",
|
1815 |
.help = open_help, |
1816 |
}; |
1817 |
|
1818 |
static int open_f(int argc, char **argv) |
1819 |
{ |
1820 |
int flags = 0; |
1821 |
int readonly = 0; |
1822 |
int growable = 0; |
1823 |
int c;
|
1824 |
|
1825 |
while ((c = getopt(argc, argv, "snrg")) != EOF) { |
1826 |
switch (c) {
|
1827 |
case 's': |
1828 |
flags |= BDRV_O_SNAPSHOT; |
1829 |
break;
|
1830 |
case 'n': |
1831 |
flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; |
1832 |
break;
|
1833 |
case 'r': |
1834 |
readonly = 1;
|
1835 |
break;
|
1836 |
case 'g': |
1837 |
growable = 1;
|
1838 |
break;
|
1839 |
default:
|
1840 |
return command_usage(&open_cmd);
|
1841 |
} |
1842 |
} |
1843 |
|
1844 |
if (!readonly) {
|
1845 |
flags |= BDRV_O_RDWR; |
1846 |
} |
1847 |
|
1848 |
if (optind != argc - 1) { |
1849 |
return command_usage(&open_cmd);
|
1850 |
} |
1851 |
|
1852 |
return openfile(argv[optind], flags, growable);
|
1853 |
} |
1854 |
|
1855 |
static int init_args_command(int index) |
1856 |
{ |
1857 |
/* only one device allowed so far */
|
1858 |
if (index >= 1) { |
1859 |
return 0; |
1860 |
} |
1861 |
return ++index;
|
1862 |
} |
1863 |
|
1864 |
static int init_check_command(const cmdinfo_t *ct) |
1865 |
{ |
1866 |
if (ct->flags & CMD_FLAG_GLOBAL) {
|
1867 |
return 1; |
1868 |
} |
1869 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1870 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1871 |
return 0; |
1872 |
} |
1873 |
return 1; |
1874 |
} |
1875 |
|
1876 |
static void usage(const char *name) |
1877 |
{ |
1878 |
printf( |
1879 |
"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
|
1880 |
"QEMU Disk exerciser\n"
|
1881 |
"\n"
|
1882 |
" -c, --cmd command to execute\n"
|
1883 |
" -r, --read-only export read-only\n"
|
1884 |
" -s, --snapshot use snapshot file\n"
|
1885 |
" -n, --nocache disable host cache\n"
|
1886 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
1887 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1888 |
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
1889 |
" -t, --cache=MODE use the given cache mode for the image\n"
|
1890 |
" -T, --trace FILE enable trace events listed in the given file\n"
|
1891 |
" -h, --help display this help and exit\n"
|
1892 |
" -V, --version output version information and exit\n"
|
1893 |
"\n",
|
1894 |
name); |
1895 |
} |
1896 |
|
1897 |
|
1898 |
int main(int argc, char **argv) |
1899 |
{ |
1900 |
int readonly = 0; |
1901 |
int growable = 0; |
1902 |
const char *sopt = "hVc:rsnmgkt:T:"; |
1903 |
const struct option lopt[] = { |
1904 |
{ "help", 0, NULL, 'h' }, |
1905 |
{ "version", 0, NULL, 'V' }, |
1906 |
{ "offset", 1, NULL, 'o' }, |
1907 |
{ "cmd", 1, NULL, 'c' }, |
1908 |
{ "read-only", 0, NULL, 'r' }, |
1909 |
{ "snapshot", 0, NULL, 's' }, |
1910 |
{ "nocache", 0, NULL, 'n' }, |
1911 |
{ "misalign", 0, NULL, 'm' }, |
1912 |
{ "growable", 0, NULL, 'g' }, |
1913 |
{ "native-aio", 0, NULL, 'k' }, |
1914 |
{ "cache", 1, NULL, 't' }, |
1915 |
{ "trace", 1, NULL, 'T' }, |
1916 |
{ NULL, 0, NULL, 0 } |
1917 |
}; |
1918 |
int c;
|
1919 |
int opt_index = 0; |
1920 |
int flags = 0; |
1921 |
|
1922 |
progname = basename(argv[0]);
|
1923 |
|
1924 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1925 |
switch (c) {
|
1926 |
case 's': |
1927 |
flags |= BDRV_O_SNAPSHOT; |
1928 |
break;
|
1929 |
case 'n': |
1930 |
flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; |
1931 |
break;
|
1932 |
case 'c': |
1933 |
add_user_command(optarg); |
1934 |
break;
|
1935 |
case 'r': |
1936 |
readonly = 1;
|
1937 |
break;
|
1938 |
case 'm': |
1939 |
misalign = 1;
|
1940 |
break;
|
1941 |
case 'g': |
1942 |
growable = 1;
|
1943 |
break;
|
1944 |
case 'k': |
1945 |
flags |= BDRV_O_NATIVE_AIO; |
1946 |
break;
|
1947 |
case 't': |
1948 |
if (bdrv_parse_cache_flags(optarg, &flags) < 0) { |
1949 |
error_report("Invalid cache option: %s", optarg);
|
1950 |
exit(1);
|
1951 |
} |
1952 |
break;
|
1953 |
case 'T': |
1954 |
if (!trace_backend_init(optarg, NULL)) { |
1955 |
exit(1); /* error message will have been printed */ |
1956 |
} |
1957 |
break;
|
1958 |
case 'V': |
1959 |
printf("%s version %s\n", progname, VERSION);
|
1960 |
exit(0);
|
1961 |
case 'h': |
1962 |
usage(progname); |
1963 |
exit(0);
|
1964 |
default:
|
1965 |
usage(progname); |
1966 |
exit(1);
|
1967 |
} |
1968 |
} |
1969 |
|
1970 |
if ((argc - optind) > 1) { |
1971 |
usage(progname); |
1972 |
exit(1);
|
1973 |
} |
1974 |
|
1975 |
qemu_init_main_loop(); |
1976 |
bdrv_init(); |
1977 |
|
1978 |
/* initialize commands */
|
1979 |
quit_init(); |
1980 |
help_init(); |
1981 |
add_command(&open_cmd); |
1982 |
add_command(&close_cmd); |
1983 |
add_command(&read_cmd); |
1984 |
add_command(&readv_cmd); |
1985 |
add_command(&write_cmd); |
1986 |
add_command(&writev_cmd); |
1987 |
add_command(&multiwrite_cmd); |
1988 |
add_command(&aio_read_cmd); |
1989 |
add_command(&aio_write_cmd); |
1990 |
add_command(&aio_flush_cmd); |
1991 |
add_command(&flush_cmd); |
1992 |
add_command(&truncate_cmd); |
1993 |
add_command(&length_cmd); |
1994 |
add_command(&info_cmd); |
1995 |
add_command(&discard_cmd); |
1996 |
add_command(&alloc_cmd); |
1997 |
add_command(&map_cmd); |
1998 |
add_command(&break_cmd); |
1999 |
add_command(&resume_cmd); |
2000 |
add_command(&wait_break_cmd); |
2001 |
add_command(&abort_cmd); |
2002 |
|
2003 |
add_args_command(init_args_command); |
2004 |
add_check_command(init_check_command); |
2005 |
|
2006 |
/* open the device */
|
2007 |
if (!readonly) {
|
2008 |
flags |= BDRV_O_RDWR; |
2009 |
} |
2010 |
|
2011 |
if ((argc - optind) == 1) { |
2012 |
openfile(argv[optind], flags, growable); |
2013 |
} |
2014 |
command_loop(); |
2015 |
|
2016 |
/*
|
2017 |
* Make sure all outstanding requests complete before the program exits.
|
2018 |
*/
|
2019 |
bdrv_drain_all(); |
2020 |
|
2021 |
if (bs) {
|
2022 |
bdrv_delete(bs); |
2023 |
} |
2024 |
return 0; |
2025 |
} |