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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 "main-loop.h" |
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#include "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;
|
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static BlockDriverState *bs;
|
29 |
|
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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); |
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memset(buf, pattern, len); |
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if (misalign) {
|
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buf += MISALIGN_OFFSET; |
71 |
} |
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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;
|
87 |
|
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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++) { |
97 |
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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} |
127 |
|
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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); |
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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++) { |
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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]); |
173 |
p += sizes[i]; |
174 |
} |
175 |
|
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fail:
|
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g_free(sizes); |
178 |
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; |
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} |
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;
|
200 |
} |
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*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;
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} |
220 |
return 1; |
221 |
} |
222 |
|
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typedef struct { |
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int64_t offset; |
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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, |
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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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} |
242 |
|
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*data->total = data->count; |
244 |
} |
245 |
|
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static int do_co_write_zeroes(int64_t offset, int count, int *total) |
247 |
{ |
248 |
Coroutine *co; |
249 |
CoWriteZeroes data = { |
250 |
.offset = offset, |
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.count = count, |
252 |
.total = total, |
253 |
.done = false,
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}; |
255 |
|
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co = qemu_coroutine_create(co_write_zeroes_entry); |
257 |
qemu_coroutine_enter(co, &data); |
258 |
while (!data.done) {
|
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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_load_vmstate(char *buf, int64_t offset, int count, int *total) |
269 |
{ |
270 |
*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
271 |
if (*total < 0) { |
272 |
return *total;
|
273 |
} |
274 |
return 1; |
275 |
} |
276 |
|
277 |
static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
278 |
{ |
279 |
*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
280 |
if (*total < 0) { |
281 |
return *total;
|
282 |
} |
283 |
return 1; |
284 |
} |
285 |
|
286 |
#define NOT_DONE 0x7fffffff |
287 |
static void aio_rw_done(void *opaque, int ret) |
288 |
{ |
289 |
*(int *)opaque = ret;
|
290 |
} |
291 |
|
292 |
static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
293 |
{ |
294 |
int async_ret = NOT_DONE;
|
295 |
|
296 |
bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
297 |
aio_rw_done, &async_ret); |
298 |
while (async_ret == NOT_DONE) {
|
299 |
main_loop_wait(false);
|
300 |
} |
301 |
|
302 |
*total = qiov->size; |
303 |
return async_ret < 0 ? async_ret : 1; |
304 |
} |
305 |
|
306 |
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
307 |
{ |
308 |
int async_ret = NOT_DONE;
|
309 |
|
310 |
bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
311 |
aio_rw_done, &async_ret); |
312 |
while (async_ret == NOT_DONE) {
|
313 |
main_loop_wait(false);
|
314 |
} |
315 |
|
316 |
*total = qiov->size; |
317 |
return async_ret < 0 ? async_ret : 1; |
318 |
} |
319 |
|
320 |
struct multiwrite_async_ret {
|
321 |
int num_done;
|
322 |
int error;
|
323 |
}; |
324 |
|
325 |
static void multiwrite_cb(void *opaque, int ret) |
326 |
{ |
327 |
struct multiwrite_async_ret *async_ret = opaque;
|
328 |
|
329 |
async_ret->num_done++; |
330 |
if (ret < 0) { |
331 |
async_ret->error = ret; |
332 |
} |
333 |
} |
334 |
|
335 |
static int do_aio_multiwrite(BlockRequest* reqs, int num_reqs, int *total) |
336 |
{ |
337 |
int i, ret;
|
338 |
struct multiwrite_async_ret async_ret = {
|
339 |
.num_done = 0,
|
340 |
.error = 0,
|
341 |
}; |
342 |
|
343 |
*total = 0;
|
344 |
for (i = 0; i < num_reqs; i++) { |
345 |
reqs[i].cb = multiwrite_cb; |
346 |
reqs[i].opaque = &async_ret; |
347 |
*total += reqs[i].qiov->size; |
348 |
} |
349 |
|
350 |
ret = bdrv_aio_multiwrite(bs, reqs, num_reqs); |
351 |
if (ret < 0) { |
352 |
return ret;
|
353 |
} |
354 |
|
355 |
while (async_ret.num_done < num_reqs) {
|
356 |
main_loop_wait(false);
|
357 |
} |
358 |
|
359 |
return async_ret.error < 0 ? async_ret.error : 1; |
360 |
} |
361 |
|
362 |
static void read_help(void) |
363 |
{ |
364 |
printf( |
365 |
"\n"
|
366 |
" reads a range of bytes from the given offset\n"
|
367 |
"\n"
|
368 |
" Example:\n"
|
369 |
" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
|
370 |
"\n"
|
371 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
372 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
373 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
374 |
" -C, -- report statistics in a machine parsable format\n"
|
375 |
" -l, -- length for pattern verification (only with -P)\n"
|
376 |
" -p, -- use bdrv_pread to read the file\n"
|
377 |
" -P, -- use a pattern to verify read data\n"
|
378 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
379 |
" -s, -- start offset for pattern verification (only with -P)\n"
|
380 |
" -v, -- dump buffer to standard output\n"
|
381 |
"\n");
|
382 |
} |
383 |
|
384 |
static int read_f(int argc, char **argv); |
385 |
|
386 |
static const cmdinfo_t read_cmd = { |
387 |
.name = "read",
|
388 |
.altname = "r",
|
389 |
.cfunc = read_f, |
390 |
.argmin = 2,
|
391 |
.argmax = -1,
|
392 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
393 |
.oneline = "reads a number of bytes at a specified offset",
|
394 |
.help = read_help, |
395 |
}; |
396 |
|
397 |
static int read_f(int argc, char **argv) |
398 |
{ |
399 |
struct timeval t1, t2;
|
400 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
401 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
402 |
int c, cnt;
|
403 |
char *buf;
|
404 |
int64_t offset; |
405 |
int count;
|
406 |
/* Some compilers get confused and warn if this is not initialized. */
|
407 |
int total = 0; |
408 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
409 |
|
410 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
411 |
switch (c) {
|
412 |
case 'b': |
413 |
bflag = 1;
|
414 |
break;
|
415 |
case 'C': |
416 |
Cflag = 1;
|
417 |
break;
|
418 |
case 'l': |
419 |
lflag = 1;
|
420 |
pattern_count = cvtnum(optarg); |
421 |
if (pattern_count < 0) { |
422 |
printf("non-numeric length argument -- %s\n", optarg);
|
423 |
return 0; |
424 |
} |
425 |
break;
|
426 |
case 'p': |
427 |
pflag = 1;
|
428 |
break;
|
429 |
case 'P': |
430 |
Pflag = 1;
|
431 |
pattern = parse_pattern(optarg); |
432 |
if (pattern < 0) { |
433 |
return 0; |
434 |
} |
435 |
break;
|
436 |
case 'q': |
437 |
qflag = 1;
|
438 |
break;
|
439 |
case 's': |
440 |
sflag = 1;
|
441 |
pattern_offset = cvtnum(optarg); |
442 |
if (pattern_offset < 0) { |
443 |
printf("non-numeric length argument -- %s\n", optarg);
|
444 |
return 0; |
445 |
} |
446 |
break;
|
447 |
case 'v': |
448 |
vflag = 1;
|
449 |
break;
|
450 |
default:
|
451 |
return command_usage(&read_cmd);
|
452 |
} |
453 |
} |
454 |
|
455 |
if (optind != argc - 2) { |
456 |
return command_usage(&read_cmd);
|
457 |
} |
458 |
|
459 |
if (bflag && pflag) {
|
460 |
printf("-b and -p cannot be specified at the same time\n");
|
461 |
return 0; |
462 |
} |
463 |
|
464 |
offset = cvtnum(argv[optind]); |
465 |
if (offset < 0) { |
466 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
467 |
return 0; |
468 |
} |
469 |
|
470 |
optind++; |
471 |
count = cvtnum(argv[optind]); |
472 |
if (count < 0) { |
473 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
474 |
return 0; |
475 |
} |
476 |
|
477 |
if (!Pflag && (lflag || sflag)) {
|
478 |
return command_usage(&read_cmd);
|
479 |
} |
480 |
|
481 |
if (!lflag) {
|
482 |
pattern_count = count - pattern_offset; |
483 |
} |
484 |
|
485 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
486 |
printf("pattern verification range exceeds end of read data\n");
|
487 |
return 0; |
488 |
} |
489 |
|
490 |
if (!pflag) {
|
491 |
if (offset & 0x1ff) { |
492 |
printf("offset %" PRId64 " is not sector aligned\n", |
493 |
offset); |
494 |
return 0; |
495 |
} |
496 |
if (count & 0x1ff) { |
497 |
printf("count %d is not sector aligned\n",
|
498 |
count); |
499 |
return 0; |
500 |
} |
501 |
} |
502 |
|
503 |
buf = qemu_io_alloc(count, 0xab);
|
504 |
|
505 |
gettimeofday(&t1, NULL);
|
506 |
if (pflag) {
|
507 |
cnt = do_pread(buf, offset, count, &total); |
508 |
} else if (bflag) { |
509 |
cnt = do_load_vmstate(buf, offset, count, &total); |
510 |
} else {
|
511 |
cnt = do_read(buf, offset, count, &total); |
512 |
} |
513 |
gettimeofday(&t2, NULL);
|
514 |
|
515 |
if (cnt < 0) { |
516 |
printf("read failed: %s\n", strerror(-cnt));
|
517 |
goto out;
|
518 |
} |
519 |
|
520 |
if (Pflag) {
|
521 |
void *cmp_buf = g_malloc(pattern_count);
|
522 |
memset(cmp_buf, pattern, pattern_count); |
523 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
524 |
printf("Pattern verification failed at offset %"
|
525 |
PRId64 ", %d bytes\n",
|
526 |
offset + pattern_offset, pattern_count); |
527 |
} |
528 |
g_free(cmp_buf); |
529 |
} |
530 |
|
531 |
if (qflag) {
|
532 |
goto out;
|
533 |
} |
534 |
|
535 |
if (vflag) {
|
536 |
dump_buffer(buf, offset, count); |
537 |
} |
538 |
|
539 |
/* Finally, report back -- -C gives a parsable format */
|
540 |
t2 = tsub(t2, t1); |
541 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
542 |
|
543 |
out:
|
544 |
qemu_io_free(buf); |
545 |
|
546 |
return 0; |
547 |
} |
548 |
|
549 |
static void readv_help(void) |
550 |
{ |
551 |
printf( |
552 |
"\n"
|
553 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
554 |
"\n"
|
555 |
" Example:\n"
|
556 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
557 |
"\n"
|
558 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
559 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
560 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
561 |
" -C, -- report statistics in a machine parsable format\n"
|
562 |
" -P, -- use a pattern to verify read data\n"
|
563 |
" -v, -- dump buffer to standard output\n"
|
564 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
565 |
"\n");
|
566 |
} |
567 |
|
568 |
static int readv_f(int argc, char **argv); |
569 |
|
570 |
static const cmdinfo_t readv_cmd = { |
571 |
.name = "readv",
|
572 |
.cfunc = readv_f, |
573 |
.argmin = 2,
|
574 |
.argmax = -1,
|
575 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
576 |
.oneline = "reads a number of bytes at a specified offset",
|
577 |
.help = readv_help, |
578 |
}; |
579 |
|
580 |
static int readv_f(int argc, char **argv) |
581 |
{ |
582 |
struct timeval t1, t2;
|
583 |
int Cflag = 0, qflag = 0, vflag = 0; |
584 |
int c, cnt;
|
585 |
char *buf;
|
586 |
int64_t offset; |
587 |
/* Some compilers get confused and warn if this is not initialized. */
|
588 |
int total = 0; |
589 |
int nr_iov;
|
590 |
QEMUIOVector qiov; |
591 |
int pattern = 0; |
592 |
int Pflag = 0; |
593 |
|
594 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
595 |
switch (c) {
|
596 |
case 'C': |
597 |
Cflag = 1;
|
598 |
break;
|
599 |
case 'P': |
600 |
Pflag = 1;
|
601 |
pattern = parse_pattern(optarg); |
602 |
if (pattern < 0) { |
603 |
return 0; |
604 |
} |
605 |
break;
|
606 |
case 'q': |
607 |
qflag = 1;
|
608 |
break;
|
609 |
case 'v': |
610 |
vflag = 1;
|
611 |
break;
|
612 |
default:
|
613 |
return command_usage(&readv_cmd);
|
614 |
} |
615 |
} |
616 |
|
617 |
if (optind > argc - 2) { |
618 |
return command_usage(&readv_cmd);
|
619 |
} |
620 |
|
621 |
|
622 |
offset = cvtnum(argv[optind]); |
623 |
if (offset < 0) { |
624 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
625 |
return 0; |
626 |
} |
627 |
optind++; |
628 |
|
629 |
if (offset & 0x1ff) { |
630 |
printf("offset %" PRId64 " is not sector aligned\n", |
631 |
offset); |
632 |
return 0; |
633 |
} |
634 |
|
635 |
nr_iov = argc - optind; |
636 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
637 |
if (buf == NULL) { |
638 |
return 0; |
639 |
} |
640 |
|
641 |
gettimeofday(&t1, NULL);
|
642 |
cnt = do_aio_readv(&qiov, offset, &total); |
643 |
gettimeofday(&t2, NULL);
|
644 |
|
645 |
if (cnt < 0) { |
646 |
printf("readv failed: %s\n", strerror(-cnt));
|
647 |
goto out;
|
648 |
} |
649 |
|
650 |
if (Pflag) {
|
651 |
void *cmp_buf = g_malloc(qiov.size);
|
652 |
memset(cmp_buf, pattern, qiov.size); |
653 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
654 |
printf("Pattern verification failed at offset %"
|
655 |
PRId64 ", %zd bytes\n", offset, qiov.size);
|
656 |
} |
657 |
g_free(cmp_buf); |
658 |
} |
659 |
|
660 |
if (qflag) {
|
661 |
goto out;
|
662 |
} |
663 |
|
664 |
if (vflag) {
|
665 |
dump_buffer(buf, offset, qiov.size); |
666 |
} |
667 |
|
668 |
/* Finally, report back -- -C gives a parsable format */
|
669 |
t2 = tsub(t2, t1); |
670 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
671 |
|
672 |
out:
|
673 |
qemu_io_free(buf); |
674 |
return 0; |
675 |
} |
676 |
|
677 |
static void write_help(void) |
678 |
{ |
679 |
printf( |
680 |
"\n"
|
681 |
" writes a range of bytes from the given offset\n"
|
682 |
"\n"
|
683 |
" Example:\n"
|
684 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
685 |
"\n"
|
686 |
" Writes into a segment of the currently open file, using a buffer\n"
|
687 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
688 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
689 |
" -p, -- use bdrv_pwrite to write the file\n"
|
690 |
" -P, -- use different pattern to fill file\n"
|
691 |
" -C, -- report statistics in a machine parsable format\n"
|
692 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
693 |
" -z, -- write zeroes using bdrv_co_write_zeroes\n"
|
694 |
"\n");
|
695 |
} |
696 |
|
697 |
static int write_f(int argc, char **argv); |
698 |
|
699 |
static const cmdinfo_t write_cmd = { |
700 |
.name = "write",
|
701 |
.altname = "w",
|
702 |
.cfunc = write_f, |
703 |
.argmin = 2,
|
704 |
.argmax = -1,
|
705 |
.args = "[-bCpqz] [-P pattern ] off len",
|
706 |
.oneline = "writes a number of bytes at a specified offset",
|
707 |
.help = write_help, |
708 |
}; |
709 |
|
710 |
static int write_f(int argc, char **argv) |
711 |
{ |
712 |
struct timeval t1, t2;
|
713 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; |
714 |
int c, cnt;
|
715 |
char *buf = NULL; |
716 |
int64_t offset; |
717 |
int count;
|
718 |
/* Some compilers get confused and warn if this is not initialized. */
|
719 |
int total = 0; |
720 |
int pattern = 0xcd; |
721 |
|
722 |
while ((c = getopt(argc, argv, "bCpP:qz")) != EOF) { |
723 |
switch (c) {
|
724 |
case 'b': |
725 |
bflag = 1;
|
726 |
break;
|
727 |
case 'C': |
728 |
Cflag = 1;
|
729 |
break;
|
730 |
case 'p': |
731 |
pflag = 1;
|
732 |
break;
|
733 |
case 'P': |
734 |
Pflag = 1;
|
735 |
pattern = parse_pattern(optarg); |
736 |
if (pattern < 0) { |
737 |
return 0; |
738 |
} |
739 |
break;
|
740 |
case 'q': |
741 |
qflag = 1;
|
742 |
break;
|
743 |
case 'z': |
744 |
zflag = 1;
|
745 |
break;
|
746 |
default:
|
747 |
return command_usage(&write_cmd);
|
748 |
} |
749 |
} |
750 |
|
751 |
if (optind != argc - 2) { |
752 |
return command_usage(&write_cmd);
|
753 |
} |
754 |
|
755 |
if (bflag + pflag + zflag > 1) { |
756 |
printf("-b, -p, or -z cannot be specified at the same time\n");
|
757 |
return 0; |
758 |
} |
759 |
|
760 |
if (zflag && Pflag) {
|
761 |
printf("-z and -P cannot be specified at the same time\n");
|
762 |
return 0; |
763 |
} |
764 |
|
765 |
offset = cvtnum(argv[optind]); |
766 |
if (offset < 0) { |
767 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
768 |
return 0; |
769 |
} |
770 |
|
771 |
optind++; |
772 |
count = cvtnum(argv[optind]); |
773 |
if (count < 0) { |
774 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
775 |
return 0; |
776 |
} |
777 |
|
778 |
if (!pflag) {
|
779 |
if (offset & 0x1ff) { |
780 |
printf("offset %" PRId64 " is not sector aligned\n", |
781 |
offset); |
782 |
return 0; |
783 |
} |
784 |
|
785 |
if (count & 0x1ff) { |
786 |
printf("count %d is not sector aligned\n",
|
787 |
count); |
788 |
return 0; |
789 |
} |
790 |
} |
791 |
|
792 |
if (!zflag) {
|
793 |
buf = qemu_io_alloc(count, pattern); |
794 |
} |
795 |
|
796 |
gettimeofday(&t1, NULL);
|
797 |
if (pflag) {
|
798 |
cnt = do_pwrite(buf, offset, count, &total); |
799 |
} else if (bflag) { |
800 |
cnt = do_save_vmstate(buf, offset, count, &total); |
801 |
} else if (zflag) { |
802 |
cnt = do_co_write_zeroes(offset, count, &total); |
803 |
} else {
|
804 |
cnt = do_write(buf, offset, count, &total); |
805 |
} |
806 |
gettimeofday(&t2, NULL);
|
807 |
|
808 |
if (cnt < 0) { |
809 |
printf("write failed: %s\n", strerror(-cnt));
|
810 |
goto out;
|
811 |
} |
812 |
|
813 |
if (qflag) {
|
814 |
goto out;
|
815 |
} |
816 |
|
817 |
/* Finally, report back -- -C gives a parsable format */
|
818 |
t2 = tsub(t2, t1); |
819 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
820 |
|
821 |
out:
|
822 |
if (!zflag) {
|
823 |
qemu_io_free(buf); |
824 |
} |
825 |
|
826 |
return 0; |
827 |
} |
828 |
|
829 |
static void |
830 |
writev_help(void)
|
831 |
{ |
832 |
printf( |
833 |
"\n"
|
834 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
835 |
"\n"
|
836 |
" Example:\n"
|
837 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
838 |
"\n"
|
839 |
" Writes into a segment of the currently open file, using a buffer\n"
|
840 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
841 |
" -P, -- use different pattern to fill file\n"
|
842 |
" -C, -- report statistics in a machine parsable format\n"
|
843 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
844 |
"\n");
|
845 |
} |
846 |
|
847 |
static int writev_f(int argc, char **argv); |
848 |
|
849 |
static const cmdinfo_t writev_cmd = { |
850 |
.name = "writev",
|
851 |
.cfunc = writev_f, |
852 |
.argmin = 2,
|
853 |
.argmax = -1,
|
854 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
855 |
.oneline = "writes a number of bytes at a specified offset",
|
856 |
.help = writev_help, |
857 |
}; |
858 |
|
859 |
static int writev_f(int argc, char **argv) |
860 |
{ |
861 |
struct timeval t1, t2;
|
862 |
int Cflag = 0, qflag = 0; |
863 |
int c, cnt;
|
864 |
char *buf;
|
865 |
int64_t offset; |
866 |
/* Some compilers get confused and warn if this is not initialized. */
|
867 |
int total = 0; |
868 |
int nr_iov;
|
869 |
int pattern = 0xcd; |
870 |
QEMUIOVector qiov; |
871 |
|
872 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
873 |
switch (c) {
|
874 |
case 'C': |
875 |
Cflag = 1;
|
876 |
break;
|
877 |
case 'q': |
878 |
qflag = 1;
|
879 |
break;
|
880 |
case 'P': |
881 |
pattern = parse_pattern(optarg); |
882 |
if (pattern < 0) { |
883 |
return 0; |
884 |
} |
885 |
break;
|
886 |
default:
|
887 |
return command_usage(&writev_cmd);
|
888 |
} |
889 |
} |
890 |
|
891 |
if (optind > argc - 2) { |
892 |
return command_usage(&writev_cmd);
|
893 |
} |
894 |
|
895 |
offset = cvtnum(argv[optind]); |
896 |
if (offset < 0) { |
897 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
898 |
return 0; |
899 |
} |
900 |
optind++; |
901 |
|
902 |
if (offset & 0x1ff) { |
903 |
printf("offset %" PRId64 " is not sector aligned\n", |
904 |
offset); |
905 |
return 0; |
906 |
} |
907 |
|
908 |
nr_iov = argc - optind; |
909 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
910 |
if (buf == NULL) { |
911 |
return 0; |
912 |
} |
913 |
|
914 |
gettimeofday(&t1, NULL);
|
915 |
cnt = do_aio_writev(&qiov, offset, &total); |
916 |
gettimeofday(&t2, NULL);
|
917 |
|
918 |
if (cnt < 0) { |
919 |
printf("writev failed: %s\n", strerror(-cnt));
|
920 |
goto out;
|
921 |
} |
922 |
|
923 |
if (qflag) {
|
924 |
goto out;
|
925 |
} |
926 |
|
927 |
/* Finally, report back -- -C gives a parsable format */
|
928 |
t2 = tsub(t2, t1); |
929 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
930 |
out:
|
931 |
qemu_io_free(buf); |
932 |
return 0; |
933 |
} |
934 |
|
935 |
static void multiwrite_help(void) |
936 |
{ |
937 |
printf( |
938 |
"\n"
|
939 |
" writes a range of bytes from the given offset source from multiple buffers,\n"
|
940 |
" in a batch of requests that may be merged by qemu\n"
|
941 |
"\n"
|
942 |
" Example:\n"
|
943 |
" 'multiwrite 512 1k 1k ; 4k 1k'\n"
|
944 |
" writes 2 kB at 512 bytes and 1 kB at 4 kB into the open file\n"
|
945 |
"\n"
|
946 |
" Writes into a segment of the currently open file, using a buffer\n"
|
947 |
" filled with a set pattern (0xcdcdcdcd). The pattern byte is increased\n"
|
948 |
" by one for each request contained in the multiwrite command.\n"
|
949 |
" -P, -- use different pattern to fill file\n"
|
950 |
" -C, -- report statistics in a machine parsable format\n"
|
951 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
952 |
"\n");
|
953 |
} |
954 |
|
955 |
static int multiwrite_f(int argc, char **argv); |
956 |
|
957 |
static const cmdinfo_t multiwrite_cmd = { |
958 |
.name = "multiwrite",
|
959 |
.cfunc = multiwrite_f, |
960 |
.argmin = 2,
|
961 |
.argmax = -1,
|
962 |
.args = "[-Cq] [-P pattern ] off len [len..] [; off len [len..]..]",
|
963 |
.oneline = "issues multiple write requests at once",
|
964 |
.help = multiwrite_help, |
965 |
}; |
966 |
|
967 |
static int multiwrite_f(int argc, char **argv) |
968 |
{ |
969 |
struct timeval t1, t2;
|
970 |
int Cflag = 0, qflag = 0; |
971 |
int c, cnt;
|
972 |
char **buf;
|
973 |
int64_t offset, first_offset = 0;
|
974 |
/* Some compilers get confused and warn if this is not initialized. */
|
975 |
int total = 0; |
976 |
int nr_iov;
|
977 |
int nr_reqs;
|
978 |
int pattern = 0xcd; |
979 |
QEMUIOVector *qiovs; |
980 |
int i;
|
981 |
BlockRequest *reqs; |
982 |
|
983 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
984 |
switch (c) {
|
985 |
case 'C': |
986 |
Cflag = 1;
|
987 |
break;
|
988 |
case 'q': |
989 |
qflag = 1;
|
990 |
break;
|
991 |
case 'P': |
992 |
pattern = parse_pattern(optarg); |
993 |
if (pattern < 0) { |
994 |
return 0; |
995 |
} |
996 |
break;
|
997 |
default:
|
998 |
return command_usage(&writev_cmd);
|
999 |
} |
1000 |
} |
1001 |
|
1002 |
if (optind > argc - 2) { |
1003 |
return command_usage(&writev_cmd);
|
1004 |
} |
1005 |
|
1006 |
nr_reqs = 1;
|
1007 |
for (i = optind; i < argc; i++) {
|
1008 |
if (!strcmp(argv[i], ";")) { |
1009 |
nr_reqs++; |
1010 |
} |
1011 |
} |
1012 |
|
1013 |
reqs = g_malloc0(nr_reqs * sizeof(*reqs));
|
1014 |
buf = g_malloc0(nr_reqs * sizeof(*buf));
|
1015 |
qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
|
1016 |
|
1017 |
for (i = 0; i < nr_reqs && optind < argc; i++) { |
1018 |
int j;
|
1019 |
|
1020 |
/* Read the offset of the request */
|
1021 |
offset = cvtnum(argv[optind]); |
1022 |
if (offset < 0) { |
1023 |
printf("non-numeric offset argument -- %s\n", argv[optind]);
|
1024 |
goto out;
|
1025 |
} |
1026 |
optind++; |
1027 |
|
1028 |
if (offset & 0x1ff) { |
1029 |
printf("offset %lld is not sector aligned\n",
|
1030 |
(long long)offset); |
1031 |
goto out;
|
1032 |
} |
1033 |
|
1034 |
if (i == 0) { |
1035 |
first_offset = offset; |
1036 |
} |
1037 |
|
1038 |
/* Read lengths for qiov entries */
|
1039 |
for (j = optind; j < argc; j++) {
|
1040 |
if (!strcmp(argv[j], ";")) { |
1041 |
break;
|
1042 |
} |
1043 |
} |
1044 |
|
1045 |
nr_iov = j - optind; |
1046 |
|
1047 |
/* Build request */
|
1048 |
buf[i] = create_iovec(&qiovs[i], &argv[optind], nr_iov, pattern); |
1049 |
if (buf[i] == NULL) { |
1050 |
goto out;
|
1051 |
} |
1052 |
|
1053 |
reqs[i].qiov = &qiovs[i]; |
1054 |
reqs[i].sector = offset >> 9;
|
1055 |
reqs[i].nb_sectors = reqs[i].qiov->size >> 9;
|
1056 |
|
1057 |
optind = j + 1;
|
1058 |
|
1059 |
pattern++; |
1060 |
} |
1061 |
|
1062 |
/* If there were empty requests at the end, ignore them */
|
1063 |
nr_reqs = i; |
1064 |
|
1065 |
gettimeofday(&t1, NULL);
|
1066 |
cnt = do_aio_multiwrite(reqs, nr_reqs, &total); |
1067 |
gettimeofday(&t2, NULL);
|
1068 |
|
1069 |
if (cnt < 0) { |
1070 |
printf("aio_multiwrite failed: %s\n", strerror(-cnt));
|
1071 |
goto out;
|
1072 |
} |
1073 |
|
1074 |
if (qflag) {
|
1075 |
goto out;
|
1076 |
} |
1077 |
|
1078 |
/* Finally, report back -- -C gives a parsable format */
|
1079 |
t2 = tsub(t2, t1); |
1080 |
print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
|
1081 |
out:
|
1082 |
for (i = 0; i < nr_reqs; i++) { |
1083 |
qemu_io_free(buf[i]); |
1084 |
if (reqs[i].qiov != NULL) { |
1085 |
qemu_iovec_destroy(&qiovs[i]); |
1086 |
} |
1087 |
} |
1088 |
g_free(buf); |
1089 |
g_free(reqs); |
1090 |
g_free(qiovs); |
1091 |
return 0; |
1092 |
} |
1093 |
|
1094 |
struct aio_ctx {
|
1095 |
QEMUIOVector qiov; |
1096 |
int64_t offset; |
1097 |
char *buf;
|
1098 |
int qflag;
|
1099 |
int vflag;
|
1100 |
int Cflag;
|
1101 |
int Pflag;
|
1102 |
int pattern;
|
1103 |
struct timeval t1;
|
1104 |
}; |
1105 |
|
1106 |
static void aio_write_done(void *opaque, int ret) |
1107 |
{ |
1108 |
struct aio_ctx *ctx = opaque;
|
1109 |
struct timeval t2;
|
1110 |
|
1111 |
gettimeofday(&t2, NULL);
|
1112 |
|
1113 |
|
1114 |
if (ret < 0) { |
1115 |
printf("aio_write failed: %s\n", strerror(-ret));
|
1116 |
goto out;
|
1117 |
} |
1118 |
|
1119 |
if (ctx->qflag) {
|
1120 |
goto out;
|
1121 |
} |
1122 |
|
1123 |
/* Finally, report back -- -C gives a parsable format */
|
1124 |
t2 = tsub(t2, ctx->t1); |
1125 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
1126 |
ctx->qiov.size, 1, ctx->Cflag);
|
1127 |
out:
|
1128 |
qemu_io_free(ctx->buf); |
1129 |
g_free(ctx); |
1130 |
} |
1131 |
|
1132 |
static void aio_read_done(void *opaque, int ret) |
1133 |
{ |
1134 |
struct aio_ctx *ctx = opaque;
|
1135 |
struct timeval t2;
|
1136 |
|
1137 |
gettimeofday(&t2, NULL);
|
1138 |
|
1139 |
if (ret < 0) { |
1140 |
printf("readv failed: %s\n", strerror(-ret));
|
1141 |
goto out;
|
1142 |
} |
1143 |
|
1144 |
if (ctx->Pflag) {
|
1145 |
void *cmp_buf = g_malloc(ctx->qiov.size);
|
1146 |
|
1147 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
1148 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
1149 |
printf("Pattern verification failed at offset %"
|
1150 |
PRId64 ", %zd bytes\n", ctx->offset, ctx->qiov.size);
|
1151 |
} |
1152 |
g_free(cmp_buf); |
1153 |
} |
1154 |
|
1155 |
if (ctx->qflag) {
|
1156 |
goto out;
|
1157 |
} |
1158 |
|
1159 |
if (ctx->vflag) {
|
1160 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
1161 |
} |
1162 |
|
1163 |
/* Finally, report back -- -C gives a parsable format */
|
1164 |
t2 = tsub(t2, ctx->t1); |
1165 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
1166 |
ctx->qiov.size, 1, ctx->Cflag);
|
1167 |
out:
|
1168 |
qemu_io_free(ctx->buf); |
1169 |
g_free(ctx); |
1170 |
} |
1171 |
|
1172 |
static void aio_read_help(void) |
1173 |
{ |
1174 |
printf( |
1175 |
"\n"
|
1176 |
" asynchronously reads a range of bytes from the given offset\n"
|
1177 |
"\n"
|
1178 |
" Example:\n"
|
1179 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
1180 |
"\n"
|
1181 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
1182 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
1183 |
" The read is performed asynchronously and the aio_flush command must be\n"
|
1184 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1185 |
" -C, -- report statistics in a machine parsable format\n"
|
1186 |
" -P, -- use a pattern to verify read data\n"
|
1187 |
" -v, -- dump buffer to standard output\n"
|
1188 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1189 |
"\n");
|
1190 |
} |
1191 |
|
1192 |
static int aio_read_f(int argc, char **argv); |
1193 |
|
1194 |
static const cmdinfo_t aio_read_cmd = { |
1195 |
.name = "aio_read",
|
1196 |
.cfunc = aio_read_f, |
1197 |
.argmin = 2,
|
1198 |
.argmax = -1,
|
1199 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
1200 |
.oneline = "asynchronously reads a number of bytes",
|
1201 |
.help = aio_read_help, |
1202 |
}; |
1203 |
|
1204 |
static int aio_read_f(int argc, char **argv) |
1205 |
{ |
1206 |
int nr_iov, c;
|
1207 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1208 |
|
1209 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
1210 |
switch (c) {
|
1211 |
case 'C': |
1212 |
ctx->Cflag = 1;
|
1213 |
break;
|
1214 |
case 'P': |
1215 |
ctx->Pflag = 1;
|
1216 |
ctx->pattern = parse_pattern(optarg); |
1217 |
if (ctx->pattern < 0) { |
1218 |
g_free(ctx); |
1219 |
return 0; |
1220 |
} |
1221 |
break;
|
1222 |
case 'q': |
1223 |
ctx->qflag = 1;
|
1224 |
break;
|
1225 |
case 'v': |
1226 |
ctx->vflag = 1;
|
1227 |
break;
|
1228 |
default:
|
1229 |
g_free(ctx); |
1230 |
return command_usage(&aio_read_cmd);
|
1231 |
} |
1232 |
} |
1233 |
|
1234 |
if (optind > argc - 2) { |
1235 |
g_free(ctx); |
1236 |
return command_usage(&aio_read_cmd);
|
1237 |
} |
1238 |
|
1239 |
ctx->offset = cvtnum(argv[optind]); |
1240 |
if (ctx->offset < 0) { |
1241 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1242 |
g_free(ctx); |
1243 |
return 0; |
1244 |
} |
1245 |
optind++; |
1246 |
|
1247 |
if (ctx->offset & 0x1ff) { |
1248 |
printf("offset %" PRId64 " is not sector aligned\n", |
1249 |
ctx->offset); |
1250 |
g_free(ctx); |
1251 |
return 0; |
1252 |
} |
1253 |
|
1254 |
nr_iov = argc - optind; |
1255 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
1256 |
if (ctx->buf == NULL) { |
1257 |
g_free(ctx); |
1258 |
return 0; |
1259 |
} |
1260 |
|
1261 |
gettimeofday(&ctx->t1, NULL);
|
1262 |
bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
1263 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
1264 |
return 0; |
1265 |
} |
1266 |
|
1267 |
static void aio_write_help(void) |
1268 |
{ |
1269 |
printf( |
1270 |
"\n"
|
1271 |
" asynchronously writes a range of bytes from the given offset source\n"
|
1272 |
" from multiple buffers\n"
|
1273 |
"\n"
|
1274 |
" Example:\n"
|
1275 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1276 |
"\n"
|
1277 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1278 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1279 |
" The write is performed asynchronously and the aio_flush command must be\n"
|
1280 |
" used to ensure all outstanding aio requests have been completed.\n"
|
1281 |
" -P, -- use different pattern to fill file\n"
|
1282 |
" -C, -- report statistics in a machine parsable format\n"
|
1283 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1284 |
"\n");
|
1285 |
} |
1286 |
|
1287 |
static int aio_write_f(int argc, char **argv); |
1288 |
|
1289 |
static const cmdinfo_t aio_write_cmd = { |
1290 |
.name = "aio_write",
|
1291 |
.cfunc = aio_write_f, |
1292 |
.argmin = 2,
|
1293 |
.argmax = -1,
|
1294 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1295 |
.oneline = "asynchronously writes a number of bytes",
|
1296 |
.help = aio_write_help, |
1297 |
}; |
1298 |
|
1299 |
static int aio_write_f(int argc, char **argv) |
1300 |
{ |
1301 |
int nr_iov, c;
|
1302 |
int pattern = 0xcd; |
1303 |
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1); |
1304 |
|
1305 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1306 |
switch (c) {
|
1307 |
case 'C': |
1308 |
ctx->Cflag = 1;
|
1309 |
break;
|
1310 |
case 'q': |
1311 |
ctx->qflag = 1;
|
1312 |
break;
|
1313 |
case 'P': |
1314 |
pattern = parse_pattern(optarg); |
1315 |
if (pattern < 0) { |
1316 |
g_free(ctx); |
1317 |
return 0; |
1318 |
} |
1319 |
break;
|
1320 |
default:
|
1321 |
g_free(ctx); |
1322 |
return command_usage(&aio_write_cmd);
|
1323 |
} |
1324 |
} |
1325 |
|
1326 |
if (optind > argc - 2) { |
1327 |
g_free(ctx); |
1328 |
return command_usage(&aio_write_cmd);
|
1329 |
} |
1330 |
|
1331 |
ctx->offset = cvtnum(argv[optind]); |
1332 |
if (ctx->offset < 0) { |
1333 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1334 |
g_free(ctx); |
1335 |
return 0; |
1336 |
} |
1337 |
optind++; |
1338 |
|
1339 |
if (ctx->offset & 0x1ff) { |
1340 |
printf("offset %" PRId64 " is not sector aligned\n", |
1341 |
ctx->offset); |
1342 |
g_free(ctx); |
1343 |
return 0; |
1344 |
} |
1345 |
|
1346 |
nr_iov = argc - optind; |
1347 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1348 |
if (ctx->buf == NULL) { |
1349 |
g_free(ctx); |
1350 |
return 0; |
1351 |
} |
1352 |
|
1353 |
gettimeofday(&ctx->t1, NULL);
|
1354 |
bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1355 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1356 |
return 0; |
1357 |
} |
1358 |
|
1359 |
static int aio_flush_f(int argc, char **argv) |
1360 |
{ |
1361 |
qemu_aio_flush(); |
1362 |
return 0; |
1363 |
} |
1364 |
|
1365 |
static const cmdinfo_t aio_flush_cmd = { |
1366 |
.name = "aio_flush",
|
1367 |
.cfunc = aio_flush_f, |
1368 |
.oneline = "completes all outstanding aio requests"
|
1369 |
}; |
1370 |
|
1371 |
static int flush_f(int argc, char **argv) |
1372 |
{ |
1373 |
bdrv_flush(bs); |
1374 |
return 0; |
1375 |
} |
1376 |
|
1377 |
static const cmdinfo_t flush_cmd = { |
1378 |
.name = "flush",
|
1379 |
.altname = "f",
|
1380 |
.cfunc = flush_f, |
1381 |
.oneline = "flush all in-core file state to disk",
|
1382 |
}; |
1383 |
|
1384 |
static int truncate_f(int argc, char **argv) |
1385 |
{ |
1386 |
int64_t offset; |
1387 |
int ret;
|
1388 |
|
1389 |
offset = cvtnum(argv[1]);
|
1390 |
if (offset < 0) { |
1391 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1392 |
return 0; |
1393 |
} |
1394 |
|
1395 |
ret = bdrv_truncate(bs, offset); |
1396 |
if (ret < 0) { |
1397 |
printf("truncate: %s\n", strerror(-ret));
|
1398 |
return 0; |
1399 |
} |
1400 |
|
1401 |
return 0; |
1402 |
} |
1403 |
|
1404 |
static const cmdinfo_t truncate_cmd = { |
1405 |
.name = "truncate",
|
1406 |
.altname = "t",
|
1407 |
.cfunc = truncate_f, |
1408 |
.argmin = 1,
|
1409 |
.argmax = 1,
|
1410 |
.args = "off",
|
1411 |
.oneline = "truncates the current file at the given offset",
|
1412 |
}; |
1413 |
|
1414 |
static int length_f(int argc, char **argv) |
1415 |
{ |
1416 |
int64_t size; |
1417 |
char s1[64]; |
1418 |
|
1419 |
size = bdrv_getlength(bs); |
1420 |
if (size < 0) { |
1421 |
printf("getlength: %s\n", strerror(-size));
|
1422 |
return 0; |
1423 |
} |
1424 |
|
1425 |
cvtstr(size, s1, sizeof(s1));
|
1426 |
printf("%s\n", s1);
|
1427 |
return 0; |
1428 |
} |
1429 |
|
1430 |
|
1431 |
static const cmdinfo_t length_cmd = { |
1432 |
.name = "length",
|
1433 |
.altname = "l",
|
1434 |
.cfunc = length_f, |
1435 |
.oneline = "gets the length of the current file",
|
1436 |
}; |
1437 |
|
1438 |
|
1439 |
static int info_f(int argc, char **argv) |
1440 |
{ |
1441 |
BlockDriverInfo bdi; |
1442 |
char s1[64], s2[64]; |
1443 |
int ret;
|
1444 |
|
1445 |
if (bs->drv && bs->drv->format_name) {
|
1446 |
printf("format name: %s\n", bs->drv->format_name);
|
1447 |
} |
1448 |
if (bs->drv && bs->drv->protocol_name) {
|
1449 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1450 |
} |
1451 |
|
1452 |
ret = bdrv_get_info(bs, &bdi); |
1453 |
if (ret) {
|
1454 |
return 0; |
1455 |
} |
1456 |
|
1457 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1458 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1459 |
|
1460 |
printf("cluster size: %s\n", s1);
|
1461 |
printf("vm state offset: %s\n", s2);
|
1462 |
|
1463 |
return 0; |
1464 |
} |
1465 |
|
1466 |
|
1467 |
|
1468 |
static const cmdinfo_t info_cmd = { |
1469 |
.name = "info",
|
1470 |
.altname = "i",
|
1471 |
.cfunc = info_f, |
1472 |
.oneline = "prints information about the current file",
|
1473 |
}; |
1474 |
|
1475 |
static void discard_help(void) |
1476 |
{ |
1477 |
printf( |
1478 |
"\n"
|
1479 |
" discards a range of bytes from the given offset\n"
|
1480 |
"\n"
|
1481 |
" Example:\n"
|
1482 |
" 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file\n"
|
1483 |
"\n"
|
1484 |
" Discards a segment of the currently open file.\n"
|
1485 |
" -C, -- report statistics in a machine parsable format\n"
|
1486 |
" -q, -- quiet mode, do not show I/O statistics\n"
|
1487 |
"\n");
|
1488 |
} |
1489 |
|
1490 |
static int discard_f(int argc, char **argv); |
1491 |
|
1492 |
static const cmdinfo_t discard_cmd = { |
1493 |
.name = "discard",
|
1494 |
.altname = "d",
|
1495 |
.cfunc = discard_f, |
1496 |
.argmin = 2,
|
1497 |
.argmax = -1,
|
1498 |
.args = "[-Cq] off len",
|
1499 |
.oneline = "discards a number of bytes at a specified offset",
|
1500 |
.help = discard_help, |
1501 |
}; |
1502 |
|
1503 |
static int discard_f(int argc, char **argv) |
1504 |
{ |
1505 |
struct timeval t1, t2;
|
1506 |
int Cflag = 0, qflag = 0; |
1507 |
int c, ret;
|
1508 |
int64_t offset; |
1509 |
int count;
|
1510 |
|
1511 |
while ((c = getopt(argc, argv, "Cq")) != EOF) { |
1512 |
switch (c) {
|
1513 |
case 'C': |
1514 |
Cflag = 1;
|
1515 |
break;
|
1516 |
case 'q': |
1517 |
qflag = 1;
|
1518 |
break;
|
1519 |
default:
|
1520 |
return command_usage(&discard_cmd);
|
1521 |
} |
1522 |
} |
1523 |
|
1524 |
if (optind != argc - 2) { |
1525 |
return command_usage(&discard_cmd);
|
1526 |
} |
1527 |
|
1528 |
offset = cvtnum(argv[optind]); |
1529 |
if (offset < 0) { |
1530 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1531 |
return 0; |
1532 |
} |
1533 |
|
1534 |
optind++; |
1535 |
count = cvtnum(argv[optind]); |
1536 |
if (count < 0) { |
1537 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1538 |
return 0; |
1539 |
} |
1540 |
|
1541 |
gettimeofday(&t1, NULL);
|
1542 |
ret = bdrv_discard(bs, offset >> BDRV_SECTOR_BITS, |
1543 |
count >> BDRV_SECTOR_BITS); |
1544 |
gettimeofday(&t2, NULL);
|
1545 |
|
1546 |
if (ret < 0) { |
1547 |
printf("discard failed: %s\n", strerror(-ret));
|
1548 |
goto out;
|
1549 |
} |
1550 |
|
1551 |
/* Finally, report back -- -C gives a parsable format */
|
1552 |
if (!qflag) {
|
1553 |
t2 = tsub(t2, t1); |
1554 |
print_report("discard", &t2, offset, count, count, 1, Cflag); |
1555 |
} |
1556 |
|
1557 |
out:
|
1558 |
return 0; |
1559 |
} |
1560 |
|
1561 |
static int alloc_f(int argc, char **argv) |
1562 |
{ |
1563 |
int64_t offset, sector_num; |
1564 |
int nb_sectors, remaining;
|
1565 |
char s1[64]; |
1566 |
int num, sum_alloc;
|
1567 |
int ret;
|
1568 |
|
1569 |
offset = cvtnum(argv[1]);
|
1570 |
if (offset & 0x1ff) { |
1571 |
printf("offset %" PRId64 " is not sector aligned\n", |
1572 |
offset); |
1573 |
return 0; |
1574 |
} |
1575 |
|
1576 |
if (argc == 3) { |
1577 |
nb_sectors = cvtnum(argv[2]);
|
1578 |
} else {
|
1579 |
nb_sectors = 1;
|
1580 |
} |
1581 |
|
1582 |
remaining = nb_sectors; |
1583 |
sum_alloc = 0;
|
1584 |
sector_num = offset >> 9;
|
1585 |
while (remaining) {
|
1586 |
ret = bdrv_is_allocated(bs, sector_num, remaining, &num); |
1587 |
sector_num += num; |
1588 |
remaining -= num; |
1589 |
if (ret) {
|
1590 |
sum_alloc += num; |
1591 |
} |
1592 |
if (num == 0) { |
1593 |
nb_sectors -= remaining; |
1594 |
remaining = 0;
|
1595 |
} |
1596 |
} |
1597 |
|
1598 |
cvtstr(offset, s1, sizeof(s1));
|
1599 |
|
1600 |
printf("%d/%d sectors allocated at offset %s\n",
|
1601 |
sum_alloc, nb_sectors, s1); |
1602 |
return 0; |
1603 |
} |
1604 |
|
1605 |
static const cmdinfo_t alloc_cmd = { |
1606 |
.name = "alloc",
|
1607 |
.altname = "a",
|
1608 |
.argmin = 1,
|
1609 |
.argmax = 2,
|
1610 |
.cfunc = alloc_f, |
1611 |
.args = "off [sectors]",
|
1612 |
.oneline = "checks if a sector is present in the file",
|
1613 |
}; |
1614 |
|
1615 |
static int map_f(int argc, char **argv) |
1616 |
{ |
1617 |
int64_t offset; |
1618 |
int64_t nb_sectors; |
1619 |
char s1[64]; |
1620 |
int num, num_checked;
|
1621 |
int ret;
|
1622 |
const char *retstr; |
1623 |
|
1624 |
offset = 0;
|
1625 |
nb_sectors = bs->total_sectors; |
1626 |
|
1627 |
do {
|
1628 |
num_checked = MIN(nb_sectors, INT_MAX); |
1629 |
ret = bdrv_is_allocated(bs, offset, num_checked, &num); |
1630 |
retstr = ret ? " allocated" : "not allocated"; |
1631 |
cvtstr(offset << 9ULL, s1, sizeof(s1)); |
1632 |
printf("[% 24" PRId64 "] % 8d/% 8d sectors %s at offset %s (%d)\n", |
1633 |
offset << 9ULL, num, num_checked, retstr, s1, ret);
|
1634 |
|
1635 |
offset += num; |
1636 |
nb_sectors -= num; |
1637 |
} while (offset < bs->total_sectors);
|
1638 |
|
1639 |
return 0; |
1640 |
} |
1641 |
|
1642 |
static const cmdinfo_t map_cmd = { |
1643 |
.name = "map",
|
1644 |
.argmin = 0,
|
1645 |
.argmax = 0,
|
1646 |
.cfunc = map_f, |
1647 |
.args = "",
|
1648 |
.oneline = "prints the allocated areas of a file",
|
1649 |
}; |
1650 |
|
1651 |
|
1652 |
static int close_f(int argc, char **argv) |
1653 |
{ |
1654 |
bdrv_delete(bs); |
1655 |
bs = NULL;
|
1656 |
return 0; |
1657 |
} |
1658 |
|
1659 |
static const cmdinfo_t close_cmd = { |
1660 |
.name = "close",
|
1661 |
.altname = "c",
|
1662 |
.cfunc = close_f, |
1663 |
.oneline = "close the current open file",
|
1664 |
}; |
1665 |
|
1666 |
static int openfile(char *name, int flags, int growable) |
1667 |
{ |
1668 |
if (bs) {
|
1669 |
fprintf(stderr, "file open already, try 'help close'\n");
|
1670 |
return 1; |
1671 |
} |
1672 |
|
1673 |
if (growable) {
|
1674 |
if (bdrv_file_open(&bs, name, flags)) {
|
1675 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1676 |
return 1; |
1677 |
} |
1678 |
} else {
|
1679 |
bs = bdrv_new("hda");
|
1680 |
|
1681 |
if (bdrv_open(bs, name, flags, NULL) < 0) { |
1682 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1683 |
bdrv_delete(bs); |
1684 |
bs = NULL;
|
1685 |
return 1; |
1686 |
} |
1687 |
} |
1688 |
|
1689 |
return 0; |
1690 |
} |
1691 |
|
1692 |
static void open_help(void) |
1693 |
{ |
1694 |
printf( |
1695 |
"\n"
|
1696 |
" opens a new file in the requested mode\n"
|
1697 |
"\n"
|
1698 |
" Example:\n"
|
1699 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1700 |
"\n"
|
1701 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1702 |
" -r, -- open file read-only\n"
|
1703 |
" -s, -- use snapshot file\n"
|
1704 |
" -n, -- disable host cache\n"
|
1705 |
" -g, -- allow file to grow (only applies to protocols)"
|
1706 |
"\n");
|
1707 |
} |
1708 |
|
1709 |
static int open_f(int argc, char **argv); |
1710 |
|
1711 |
static const cmdinfo_t open_cmd = { |
1712 |
.name = "open",
|
1713 |
.altname = "o",
|
1714 |
.cfunc = open_f, |
1715 |
.argmin = 1,
|
1716 |
.argmax = -1,
|
1717 |
.flags = CMD_NOFILE_OK, |
1718 |
.args = "[-Crsn] [path]",
|
1719 |
.oneline = "open the file specified by path",
|
1720 |
.help = open_help, |
1721 |
}; |
1722 |
|
1723 |
static int open_f(int argc, char **argv) |
1724 |
{ |
1725 |
int flags = 0; |
1726 |
int readonly = 0; |
1727 |
int growable = 0; |
1728 |
int c;
|
1729 |
|
1730 |
while ((c = getopt(argc, argv, "snrg")) != EOF) { |
1731 |
switch (c) {
|
1732 |
case 's': |
1733 |
flags |= BDRV_O_SNAPSHOT; |
1734 |
break;
|
1735 |
case 'n': |
1736 |
flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; |
1737 |
break;
|
1738 |
case 'r': |
1739 |
readonly = 1;
|
1740 |
break;
|
1741 |
case 'g': |
1742 |
growable = 1;
|
1743 |
break;
|
1744 |
default:
|
1745 |
return command_usage(&open_cmd);
|
1746 |
} |
1747 |
} |
1748 |
|
1749 |
if (!readonly) {
|
1750 |
flags |= BDRV_O_RDWR; |
1751 |
} |
1752 |
|
1753 |
if (optind != argc - 1) { |
1754 |
return command_usage(&open_cmd);
|
1755 |
} |
1756 |
|
1757 |
return openfile(argv[optind], flags, growable);
|
1758 |
} |
1759 |
|
1760 |
static int init_args_command(int index) |
1761 |
{ |
1762 |
/* only one device allowed so far */
|
1763 |
if (index >= 1) { |
1764 |
return 0; |
1765 |
} |
1766 |
return ++index;
|
1767 |
} |
1768 |
|
1769 |
static int init_check_command(const cmdinfo_t *ct) |
1770 |
{ |
1771 |
if (ct->flags & CMD_FLAG_GLOBAL) {
|
1772 |
return 1; |
1773 |
} |
1774 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1775 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1776 |
return 0; |
1777 |
} |
1778 |
return 1; |
1779 |
} |
1780 |
|
1781 |
static void usage(const char *name) |
1782 |
{ |
1783 |
printf( |
1784 |
"Usage: %s [-h] [-V] [-rsnm] [-c cmd] ... [file]\n"
|
1785 |
"QEMU Disk exerciser\n"
|
1786 |
"\n"
|
1787 |
" -c, --cmd command to execute\n"
|
1788 |
" -r, --read-only export read-only\n"
|
1789 |
" -s, --snapshot use snapshot file\n"
|
1790 |
" -n, --nocache disable host cache\n"
|
1791 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
1792 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1793 |
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
1794 |
" -t, --cache=MODE use the given cache mode for the image\n"
|
1795 |
" -T, --trace FILE enable trace events listed in the given file\n"
|
1796 |
" -h, --help display this help and exit\n"
|
1797 |
" -V, --version output version information and exit\n"
|
1798 |
"\n",
|
1799 |
name); |
1800 |
} |
1801 |
|
1802 |
|
1803 |
int main(int argc, char **argv) |
1804 |
{ |
1805 |
int readonly = 0; |
1806 |
int growable = 0; |
1807 |
const char *sopt = "hVc:rsnmgkt:T:"; |
1808 |
const struct option lopt[] = { |
1809 |
{ "help", 0, NULL, 'h' }, |
1810 |
{ "version", 0, NULL, 'V' }, |
1811 |
{ "offset", 1, NULL, 'o' }, |
1812 |
{ "cmd", 1, NULL, 'c' }, |
1813 |
{ "read-only", 0, NULL, 'r' }, |
1814 |
{ "snapshot", 0, NULL, 's' }, |
1815 |
{ "nocache", 0, NULL, 'n' }, |
1816 |
{ "misalign", 0, NULL, 'm' }, |
1817 |
{ "growable", 0, NULL, 'g' }, |
1818 |
{ "native-aio", 0, NULL, 'k' }, |
1819 |
{ "cache", 1, NULL, 't' }, |
1820 |
{ "trace", 1, NULL, 'T' }, |
1821 |
{ NULL, 0, NULL, 0 } |
1822 |
}; |
1823 |
int c;
|
1824 |
int opt_index = 0; |
1825 |
int flags = 0; |
1826 |
|
1827 |
progname = basename(argv[0]);
|
1828 |
|
1829 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1830 |
switch (c) {
|
1831 |
case 's': |
1832 |
flags |= BDRV_O_SNAPSHOT; |
1833 |
break;
|
1834 |
case 'n': |
1835 |
flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; |
1836 |
break;
|
1837 |
case 'c': |
1838 |
add_user_command(optarg); |
1839 |
break;
|
1840 |
case 'r': |
1841 |
readonly = 1;
|
1842 |
break;
|
1843 |
case 'm': |
1844 |
misalign = 1;
|
1845 |
break;
|
1846 |
case 'g': |
1847 |
growable = 1;
|
1848 |
break;
|
1849 |
case 'k': |
1850 |
flags |= BDRV_O_NATIVE_AIO; |
1851 |
break;
|
1852 |
case 't': |
1853 |
if (bdrv_parse_cache_flags(optarg, &flags) < 0) { |
1854 |
error_report("Invalid cache option: %s", optarg);
|
1855 |
exit(1);
|
1856 |
} |
1857 |
break;
|
1858 |
case 'T': |
1859 |
if (!trace_backend_init(optarg, NULL)) { |
1860 |
exit(1); /* error message will have been printed */ |
1861 |
} |
1862 |
break;
|
1863 |
case 'V': |
1864 |
printf("%s version %s\n", progname, VERSION);
|
1865 |
exit(0);
|
1866 |
case 'h': |
1867 |
usage(progname); |
1868 |
exit(0);
|
1869 |
default:
|
1870 |
usage(progname); |
1871 |
exit(1);
|
1872 |
} |
1873 |
} |
1874 |
|
1875 |
if ((argc - optind) > 1) { |
1876 |
usage(progname); |
1877 |
exit(1);
|
1878 |
} |
1879 |
|
1880 |
bdrv_init(); |
1881 |
|
1882 |
qemu_init_main_loop(); |
1883 |
|
1884 |
/* initialize commands */
|
1885 |
quit_init(); |
1886 |
help_init(); |
1887 |
add_command(&open_cmd); |
1888 |
add_command(&close_cmd); |
1889 |
add_command(&read_cmd); |
1890 |
add_command(&readv_cmd); |
1891 |
add_command(&write_cmd); |
1892 |
add_command(&writev_cmd); |
1893 |
add_command(&multiwrite_cmd); |
1894 |
add_command(&aio_read_cmd); |
1895 |
add_command(&aio_write_cmd); |
1896 |
add_command(&aio_flush_cmd); |
1897 |
add_command(&flush_cmd); |
1898 |
add_command(&truncate_cmd); |
1899 |
add_command(&length_cmd); |
1900 |
add_command(&info_cmd); |
1901 |
add_command(&discard_cmd); |
1902 |
add_command(&alloc_cmd); |
1903 |
add_command(&map_cmd); |
1904 |
|
1905 |
add_args_command(init_args_command); |
1906 |
add_check_command(init_check_command); |
1907 |
|
1908 |
/* open the device */
|
1909 |
if (!readonly) {
|
1910 |
flags |= BDRV_O_RDWR; |
1911 |
} |
1912 |
|
1913 |
if ((argc - optind) == 1) { |
1914 |
openfile(argv[optind], flags, growable); |
1915 |
} |
1916 |
command_loop(); |
1917 |
|
1918 |
/*
|
1919 |
* Make sure all outstanding requests complete before the program exits.
|
1920 |
*/
|
1921 |
bdrv_drain_all(); |
1922 |
|
1923 |
if (bs) {
|
1924 |
bdrv_delete(bs); |
1925 |
} |
1926 |
return 0; |
1927 |
} |