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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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#include "qemu-common.h" |
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#include "block_int.h" |
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#include "cmd.h" |
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#define VERSION "0.0.1" |
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#define CMD_NOFILE_OK 0x01 |
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char *progname;
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static BlockDriverState *bs;
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static int misalign; |
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|
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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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pattern = strtol(arg, &endptr, 0);
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if (pattern < 0 || pattern > UCHAR_MAX || *endptr != '\0') { |
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printf("%s is not a valid pattern byte\n", arg);
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return -1; |
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} |
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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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#define MISALIGN_OFFSET 16 |
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static void *qemu_io_alloc(size_t len, int pattern) |
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{ |
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void *buf;
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|
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if (misalign)
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len += MISALIGN_OFFSET; |
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buf = qemu_memalign(512, len);
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memset(buf, pattern, len); |
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if (misalign)
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buf += MISALIGN_OFFSET; |
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return buf;
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} |
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|
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static void qemu_io_free(void *p) |
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{ |
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if (misalign)
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p -= MISALIGN_OFFSET; |
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qemu_vfree(p); |
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} |
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|
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static void |
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dump_buffer(const void *buffer, int64_t offset, int len) |
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{ |
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int i, j;
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const uint8_t *p;
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for (i = 0, p = buffer; i < len; i += 16) { |
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const uint8_t *s = p;
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printf("%08llx: ", (unsigned long long)offset + i); |
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for (j = 0; j < 16 && i + j < len; j++, p++) |
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printf("%02x ", *p);
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printf(" ");
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for (j = 0; j < 16 && i + j < len; j++, s++) { |
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if (isalnum(*s))
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printf("%c", *s);
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else
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printf(".");
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} |
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printf("\n");
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} |
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} |
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static void |
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print_report(const char *op, struct timeval *t, int64_t offset, |
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int count, int total, int cnt, int Cflag) |
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{ |
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char s1[64], s2[64], ts[64]; |
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timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
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if (!Cflag) {
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cvtstr((double)total, s1, sizeof(s1)); |
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cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
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printf("%s %d/%d bytes at offset %lld\n",
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op, total, count, (long long)offset); |
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printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
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s1, cnt, ts, s2, tdiv((double)cnt, *t));
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} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
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printf("%d,%d,%s,%.3f,%.3f\n",
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total, cnt, ts, |
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tdiv((double)total, *t),
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tdiv((double)cnt, *t));
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} |
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} |
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/*
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* Parse multiple length statements for vectored I/O, and construct an I/O
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* vector matching it.
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*/
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static void * |
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create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) |
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{ |
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size_t *sizes = calloc(nr_iov, sizeof(size_t));
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size_t count = 0;
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void *buf, *p;
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int i;
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for (i = 0; i < nr_iov; i++) { |
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char *arg = argv[i];
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long long len; |
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len = cvtnum(arg); |
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if (len < 0) { |
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printf("non-numeric length argument -- %s\n", arg);
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return NULL; |
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} |
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/* should be SIZE_T_MAX, but that doesn't exist */
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if (len > UINT_MAX) {
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printf("too large length argument -- %s\n", arg);
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return NULL; |
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} |
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|
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if (len & 0x1ff) { |
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printf("length argument %lld is not sector aligned\n",
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len); |
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return NULL; |
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} |
156 |
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sizes[i] = len; |
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count += len; |
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} |
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qemu_iovec_init(qiov, nr_iov); |
162 |
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buf = p = qemu_io_alloc(count, pattern); |
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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]; |
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} |
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|
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free(sizes); |
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return buf;
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} |
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static int do_read(char *buf, int64_t offset, int count, int *total) |
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{ |
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int ret;
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ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
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if (ret < 0) |
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return ret;
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*total = count; |
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return 1; |
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} |
184 |
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static int do_write(char *buf, int64_t offset, int count, int *total) |
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{ |
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int ret;
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ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); |
190 |
if (ret < 0) |
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return ret;
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*total = count; |
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return 1; |
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} |
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static int do_pread(char *buf, int64_t offset, int count, int *total) |
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{ |
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*total = bdrv_pread(bs, offset, (uint8_t *)buf, count); |
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if (*total < 0) |
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return *total;
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return 1; |
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} |
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static int do_pwrite(char *buf, int64_t offset, int count, int *total) |
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{ |
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*total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); |
207 |
if (*total < 0) |
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return *total;
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return 1; |
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} |
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static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) |
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{ |
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*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
215 |
if (*total < 0) |
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return *total;
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return 1; |
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} |
219 |
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static int do_save_vmstate(char *buf, int64_t offset, int count, int *total) |
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{ |
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*total = bdrv_save_vmstate(bs, (uint8_t *)buf, offset, count); |
223 |
if (*total < 0) |
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return *total;
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return 1; |
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} |
227 |
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#define NOT_DONE 0x7fffffff |
229 |
static void aio_rw_done(void *opaque, int ret) |
230 |
{ |
231 |
*(int *)opaque = ret;
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} |
233 |
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static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
235 |
{ |
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BlockDriverAIOCB *acb; |
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int async_ret = NOT_DONE;
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acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, |
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aio_rw_done, &async_ret); |
241 |
if (!acb)
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return -EIO;
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243 |
|
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while (async_ret == NOT_DONE)
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qemu_aio_wait(); |
246 |
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*total = qiov->size; |
248 |
return async_ret < 0 ? async_ret : 1; |
249 |
} |
250 |
|
251 |
static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
252 |
{ |
253 |
BlockDriverAIOCB *acb; |
254 |
int async_ret = NOT_DONE;
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255 |
|
256 |
acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
257 |
aio_rw_done, &async_ret); |
258 |
if (!acb)
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return -EIO;
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260 |
|
261 |
while (async_ret == NOT_DONE)
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qemu_aio_wait(); |
263 |
|
264 |
*total = qiov->size; |
265 |
return async_ret < 0 ? async_ret : 1; |
266 |
} |
267 |
|
268 |
|
269 |
static const cmdinfo_t read_cmd; |
270 |
|
271 |
static void |
272 |
read_help(void)
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273 |
{ |
274 |
printf( |
275 |
"\n"
|
276 |
" reads a range of bytes from the given offset\n"
|
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"\n"
|
278 |
" Example:\n"
|
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" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n"
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280 |
"\n"
|
281 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
282 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
283 |
" -b, -- read from the VM state rather than the virtual disk\n"
|
284 |
" -C, -- report statistics in a machine parsable format\n"
|
285 |
" -l, -- length for pattern verification (only with -P)\n"
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286 |
" -p, -- use bdrv_pread to read the file\n"
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287 |
" -P, -- use a pattern to verify read data\n"
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288 |
" -q, -- quite mode, do not show I/O statistics\n"
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289 |
" -s, -- start offset for pattern verification (only with -P)\n"
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290 |
" -v, -- dump buffer to standard output\n"
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291 |
"\n");
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292 |
} |
293 |
|
294 |
static int |
295 |
read_f(int argc, char **argv) |
296 |
{ |
297 |
struct timeval t1, t2;
|
298 |
int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
299 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
300 |
int c, cnt;
|
301 |
char *buf;
|
302 |
int64_t offset; |
303 |
int count;
|
304 |
/* Some compilers get confused and warn if this is not initialized. */
|
305 |
int total = 0; |
306 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
307 |
|
308 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
309 |
switch (c) {
|
310 |
case 'b': |
311 |
bflag = 1;
|
312 |
break;
|
313 |
case 'C': |
314 |
Cflag = 1;
|
315 |
break;
|
316 |
case 'l': |
317 |
lflag = 1;
|
318 |
pattern_count = cvtnum(optarg); |
319 |
if (pattern_count < 0) { |
320 |
printf("non-numeric length argument -- %s\n", optarg);
|
321 |
return 0; |
322 |
} |
323 |
break;
|
324 |
case 'p': |
325 |
pflag = 1;
|
326 |
break;
|
327 |
case 'P': |
328 |
Pflag = 1;
|
329 |
pattern = parse_pattern(optarg); |
330 |
if (pattern < 0) |
331 |
return 0; |
332 |
break;
|
333 |
case 'q': |
334 |
qflag = 1;
|
335 |
break;
|
336 |
case 's': |
337 |
sflag = 1;
|
338 |
pattern_offset = cvtnum(optarg); |
339 |
if (pattern_offset < 0) { |
340 |
printf("non-numeric length argument -- %s\n", optarg);
|
341 |
return 0; |
342 |
} |
343 |
break;
|
344 |
case 'v': |
345 |
vflag = 1;
|
346 |
break;
|
347 |
default:
|
348 |
return command_usage(&read_cmd);
|
349 |
} |
350 |
} |
351 |
|
352 |
if (optind != argc - 2) |
353 |
return command_usage(&read_cmd);
|
354 |
|
355 |
if (bflag && pflag) {
|
356 |
printf("-b and -p cannot be specified at the same time\n");
|
357 |
return 0; |
358 |
} |
359 |
|
360 |
offset = cvtnum(argv[optind]); |
361 |
if (offset < 0) { |
362 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
363 |
return 0; |
364 |
} |
365 |
|
366 |
optind++; |
367 |
count = cvtnum(argv[optind]); |
368 |
if (count < 0) { |
369 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
370 |
return 0; |
371 |
} |
372 |
|
373 |
if (!Pflag && (lflag || sflag)) {
|
374 |
return command_usage(&read_cmd);
|
375 |
} |
376 |
|
377 |
if (!lflag) {
|
378 |
pattern_count = count - pattern_offset; |
379 |
} |
380 |
|
381 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
382 |
printf("pattern verfication range exceeds end of read data\n");
|
383 |
return 0; |
384 |
} |
385 |
|
386 |
if (!pflag)
|
387 |
if (offset & 0x1ff) { |
388 |
printf("offset %lld is not sector aligned\n",
|
389 |
(long long)offset); |
390 |
return 0; |
391 |
|
392 |
if (count & 0x1ff) { |
393 |
printf("count %d is not sector aligned\n",
|
394 |
count); |
395 |
return 0; |
396 |
} |
397 |
} |
398 |
|
399 |
buf = qemu_io_alloc(count, 0xab);
|
400 |
|
401 |
gettimeofday(&t1, NULL);
|
402 |
if (pflag)
|
403 |
cnt = do_pread(buf, offset, count, &total); |
404 |
else if (bflag) |
405 |
cnt = do_load_vmstate(buf, offset, count, &total); |
406 |
else
|
407 |
cnt = do_read(buf, offset, count, &total); |
408 |
gettimeofday(&t2, NULL);
|
409 |
|
410 |
if (cnt < 0) { |
411 |
printf("read failed: %s\n", strerror(-cnt));
|
412 |
goto out;
|
413 |
} |
414 |
|
415 |
if (Pflag) {
|
416 |
void* cmp_buf = malloc(pattern_count);
|
417 |
memset(cmp_buf, pattern, pattern_count); |
418 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
419 |
printf("Pattern verification failed at offset %lld, "
|
420 |
"%d bytes\n",
|
421 |
(long long) offset + pattern_offset, pattern_count); |
422 |
} |
423 |
free(cmp_buf); |
424 |
} |
425 |
|
426 |
if (qflag)
|
427 |
goto out;
|
428 |
|
429 |
if (vflag)
|
430 |
dump_buffer(buf, offset, count); |
431 |
|
432 |
/* Finally, report back -- -C gives a parsable format */
|
433 |
t2 = tsub(t2, t1); |
434 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
435 |
|
436 |
out:
|
437 |
qemu_io_free(buf); |
438 |
|
439 |
return 0; |
440 |
} |
441 |
|
442 |
static const cmdinfo_t read_cmd = { |
443 |
.name = "read",
|
444 |
.altname = "r",
|
445 |
.cfunc = read_f, |
446 |
.argmin = 2,
|
447 |
.argmax = -1,
|
448 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
449 |
.oneline = "reads a number of bytes at a specified offset",
|
450 |
.help = read_help, |
451 |
}; |
452 |
|
453 |
static const cmdinfo_t readv_cmd; |
454 |
|
455 |
static void |
456 |
readv_help(void)
|
457 |
{ |
458 |
printf( |
459 |
"\n"
|
460 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
461 |
"\n"
|
462 |
" Example:\n"
|
463 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
464 |
"\n"
|
465 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
466 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
467 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
468 |
" -C, -- report statistics in a machine parsable format\n"
|
469 |
" -P, -- use a pattern to verify read data\n"
|
470 |
" -v, -- dump buffer to standard output\n"
|
471 |
" -q, -- quite mode, do not show I/O statistics\n"
|
472 |
"\n");
|
473 |
} |
474 |
|
475 |
static int |
476 |
readv_f(int argc, char **argv) |
477 |
{ |
478 |
struct timeval t1, t2;
|
479 |
int Cflag = 0, qflag = 0, vflag = 0; |
480 |
int c, cnt;
|
481 |
char *buf;
|
482 |
int64_t offset; |
483 |
int total;
|
484 |
int nr_iov;
|
485 |
QEMUIOVector qiov; |
486 |
int pattern = 0; |
487 |
int Pflag = 0; |
488 |
|
489 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
490 |
switch (c) {
|
491 |
case 'C': |
492 |
Cflag = 1;
|
493 |
break;
|
494 |
case 'P': |
495 |
Pflag = 1;
|
496 |
pattern = parse_pattern(optarg); |
497 |
if (pattern < 0) |
498 |
return 0; |
499 |
break;
|
500 |
case 'q': |
501 |
qflag = 1;
|
502 |
break;
|
503 |
case 'v': |
504 |
vflag = 1;
|
505 |
break;
|
506 |
default:
|
507 |
return command_usage(&readv_cmd);
|
508 |
} |
509 |
} |
510 |
|
511 |
if (optind > argc - 2) |
512 |
return command_usage(&readv_cmd);
|
513 |
|
514 |
|
515 |
offset = cvtnum(argv[optind]); |
516 |
if (offset < 0) { |
517 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
518 |
return 0; |
519 |
} |
520 |
optind++; |
521 |
|
522 |
if (offset & 0x1ff) { |
523 |
printf("offset %lld is not sector aligned\n",
|
524 |
(long long)offset); |
525 |
return 0; |
526 |
} |
527 |
|
528 |
nr_iov = argc - optind; |
529 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
530 |
|
531 |
gettimeofday(&t1, NULL);
|
532 |
cnt = do_aio_readv(&qiov, offset, &total); |
533 |
gettimeofday(&t2, NULL);
|
534 |
|
535 |
if (cnt < 0) { |
536 |
printf("readv failed: %s\n", strerror(-cnt));
|
537 |
goto out;
|
538 |
} |
539 |
|
540 |
if (Pflag) {
|
541 |
void* cmp_buf = malloc(qiov.size);
|
542 |
memset(cmp_buf, pattern, qiov.size); |
543 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
544 |
printf("Pattern verification failed at offset %lld, "
|
545 |
"%zd bytes\n",
|
546 |
(long long) offset, qiov.size); |
547 |
} |
548 |
free(cmp_buf); |
549 |
} |
550 |
|
551 |
if (qflag)
|
552 |
goto out;
|
553 |
|
554 |
if (vflag)
|
555 |
dump_buffer(buf, offset, qiov.size); |
556 |
|
557 |
/* Finally, report back -- -C gives a parsable format */
|
558 |
t2 = tsub(t2, t1); |
559 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
560 |
|
561 |
out:
|
562 |
qemu_io_free(buf); |
563 |
return 0; |
564 |
} |
565 |
|
566 |
static const cmdinfo_t readv_cmd = { |
567 |
.name = "readv",
|
568 |
.cfunc = readv_f, |
569 |
.argmin = 2,
|
570 |
.argmax = -1,
|
571 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
572 |
.oneline = "reads a number of bytes at a specified offset",
|
573 |
.help = readv_help, |
574 |
}; |
575 |
|
576 |
static const cmdinfo_t write_cmd; |
577 |
|
578 |
static void |
579 |
write_help(void)
|
580 |
{ |
581 |
printf( |
582 |
"\n"
|
583 |
" writes a range of bytes from the given offset\n"
|
584 |
"\n"
|
585 |
" Example:\n"
|
586 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
587 |
"\n"
|
588 |
" Writes into a segment of the currently open file, using a buffer\n"
|
589 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
590 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
591 |
" -p, -- use bdrv_pwrite to write the file\n"
|
592 |
" -P, -- use different pattern to fill file\n"
|
593 |
" -C, -- report statistics in a machine parsable format\n"
|
594 |
" -q, -- quite mode, do not show I/O statistics\n"
|
595 |
"\n");
|
596 |
} |
597 |
|
598 |
static int |
599 |
write_f(int argc, char **argv) |
600 |
{ |
601 |
struct timeval t1, t2;
|
602 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
603 |
int c, cnt;
|
604 |
char *buf;
|
605 |
int64_t offset; |
606 |
int count;
|
607 |
/* Some compilers get confused and warn if this is not initialized. */
|
608 |
int total = 0; |
609 |
int pattern = 0xcd; |
610 |
|
611 |
while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
612 |
switch (c) {
|
613 |
case 'b': |
614 |
bflag = 1;
|
615 |
break;
|
616 |
case 'C': |
617 |
Cflag = 1;
|
618 |
break;
|
619 |
case 'p': |
620 |
pflag = 1;
|
621 |
break;
|
622 |
case 'P': |
623 |
pattern = parse_pattern(optarg); |
624 |
if (pattern < 0) |
625 |
return 0; |
626 |
break;
|
627 |
case 'q': |
628 |
qflag = 1;
|
629 |
break;
|
630 |
default:
|
631 |
return command_usage(&write_cmd);
|
632 |
} |
633 |
} |
634 |
|
635 |
if (optind != argc - 2) |
636 |
return command_usage(&write_cmd);
|
637 |
|
638 |
if (bflag && pflag) {
|
639 |
printf("-b and -p cannot be specified at the same time\n");
|
640 |
return 0; |
641 |
} |
642 |
|
643 |
offset = cvtnum(argv[optind]); |
644 |
if (offset < 0) { |
645 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
646 |
return 0; |
647 |
} |
648 |
|
649 |
optind++; |
650 |
count = cvtnum(argv[optind]); |
651 |
if (count < 0) { |
652 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
653 |
return 0; |
654 |
} |
655 |
|
656 |
if (!pflag) {
|
657 |
if (offset & 0x1ff) { |
658 |
printf("offset %lld is not sector aligned\n",
|
659 |
(long long)offset); |
660 |
return 0; |
661 |
} |
662 |
|
663 |
if (count & 0x1ff) { |
664 |
printf("count %d is not sector aligned\n",
|
665 |
count); |
666 |
return 0; |
667 |
} |
668 |
} |
669 |
|
670 |
buf = qemu_io_alloc(count, pattern); |
671 |
|
672 |
gettimeofday(&t1, NULL);
|
673 |
if (pflag)
|
674 |
cnt = do_pwrite(buf, offset, count, &total); |
675 |
else if (bflag) |
676 |
cnt = do_save_vmstate(buf, offset, count, &total); |
677 |
else
|
678 |
cnt = do_write(buf, offset, count, &total); |
679 |
gettimeofday(&t2, NULL);
|
680 |
|
681 |
if (cnt < 0) { |
682 |
printf("write failed: %s\n", strerror(-cnt));
|
683 |
goto out;
|
684 |
} |
685 |
|
686 |
if (qflag)
|
687 |
goto out;
|
688 |
|
689 |
/* Finally, report back -- -C gives a parsable format */
|
690 |
t2 = tsub(t2, t1); |
691 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
692 |
|
693 |
out:
|
694 |
qemu_io_free(buf); |
695 |
|
696 |
return 0; |
697 |
} |
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 = "[-abCpq] [-P pattern ] off len",
|
706 |
.oneline = "writes a number of bytes at a specified offset",
|
707 |
.help = write_help, |
708 |
}; |
709 |
|
710 |
static const cmdinfo_t writev_cmd; |
711 |
|
712 |
static void |
713 |
writev_help(void)
|
714 |
{ |
715 |
printf( |
716 |
"\n"
|
717 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
718 |
"\n"
|
719 |
" Example:\n"
|
720 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
721 |
"\n"
|
722 |
" Writes into a segment of the currently open file, using a buffer\n"
|
723 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
724 |
" -P, -- use different pattern to fill file\n"
|
725 |
" -C, -- report statistics in a machine parsable format\n"
|
726 |
" -q, -- quite mode, do not show I/O statistics\n"
|
727 |
"\n");
|
728 |
} |
729 |
|
730 |
static int |
731 |
writev_f(int argc, char **argv) |
732 |
{ |
733 |
struct timeval t1, t2;
|
734 |
int Cflag = 0, qflag = 0; |
735 |
int c, cnt;
|
736 |
char *buf;
|
737 |
int64_t offset; |
738 |
int total;
|
739 |
int nr_iov;
|
740 |
int pattern = 0xcd; |
741 |
QEMUIOVector qiov; |
742 |
|
743 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
744 |
switch (c) {
|
745 |
case 'C': |
746 |
Cflag = 1;
|
747 |
break;
|
748 |
case 'q': |
749 |
qflag = 1;
|
750 |
break;
|
751 |
case 'P': |
752 |
pattern = parse_pattern(optarg); |
753 |
if (pattern < 0) |
754 |
return 0; |
755 |
break;
|
756 |
default:
|
757 |
return command_usage(&writev_cmd);
|
758 |
} |
759 |
} |
760 |
|
761 |
if (optind > argc - 2) |
762 |
return command_usage(&writev_cmd);
|
763 |
|
764 |
offset = cvtnum(argv[optind]); |
765 |
if (offset < 0) { |
766 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
767 |
return 0; |
768 |
} |
769 |
optind++; |
770 |
|
771 |
if (offset & 0x1ff) { |
772 |
printf("offset %lld is not sector aligned\n",
|
773 |
(long long)offset); |
774 |
return 0; |
775 |
} |
776 |
|
777 |
nr_iov = argc - optind; |
778 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
779 |
|
780 |
gettimeofday(&t1, NULL);
|
781 |
cnt = do_aio_writev(&qiov, offset, &total); |
782 |
gettimeofday(&t2, NULL);
|
783 |
|
784 |
if (cnt < 0) { |
785 |
printf("writev failed: %s\n", strerror(-cnt));
|
786 |
goto out;
|
787 |
} |
788 |
|
789 |
if (qflag)
|
790 |
goto out;
|
791 |
|
792 |
/* Finally, report back -- -C gives a parsable format */
|
793 |
t2 = tsub(t2, t1); |
794 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
795 |
out:
|
796 |
qemu_io_free(buf); |
797 |
return 0; |
798 |
} |
799 |
|
800 |
static const cmdinfo_t writev_cmd = { |
801 |
.name = "writev",
|
802 |
.cfunc = writev_f, |
803 |
.argmin = 2,
|
804 |
.argmax = -1,
|
805 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
806 |
.oneline = "writes a number of bytes at a specified offset",
|
807 |
.help = writev_help, |
808 |
}; |
809 |
|
810 |
struct aio_ctx {
|
811 |
QEMUIOVector qiov; |
812 |
int64_t offset; |
813 |
char *buf;
|
814 |
int qflag;
|
815 |
int vflag;
|
816 |
int Cflag;
|
817 |
int Pflag;
|
818 |
int pattern;
|
819 |
struct timeval t1;
|
820 |
}; |
821 |
|
822 |
static void |
823 |
aio_write_done(void *opaque, int ret) |
824 |
{ |
825 |
struct aio_ctx *ctx = opaque;
|
826 |
struct timeval t2;
|
827 |
|
828 |
gettimeofday(&t2, NULL);
|
829 |
|
830 |
|
831 |
if (ret < 0) { |
832 |
printf("aio_write failed: %s\n", strerror(-ret));
|
833 |
goto out;
|
834 |
} |
835 |
|
836 |
if (ctx->qflag) {
|
837 |
goto out;
|
838 |
} |
839 |
|
840 |
/* Finally, report back -- -C gives a parsable format */
|
841 |
t2 = tsub(t2, ctx->t1); |
842 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
843 |
ctx->qiov.size, 1, ctx->Cflag);
|
844 |
out:
|
845 |
qemu_io_free(ctx->buf); |
846 |
free(ctx); |
847 |
} |
848 |
|
849 |
static const cmdinfo_t aio_read_cmd; |
850 |
|
851 |
static void |
852 |
aio_read_done(void *opaque, int ret) |
853 |
{ |
854 |
struct aio_ctx *ctx = opaque;
|
855 |
struct timeval t2;
|
856 |
|
857 |
gettimeofday(&t2, NULL);
|
858 |
|
859 |
if (ret < 0) { |
860 |
printf("readv failed: %s\n", strerror(-ret));
|
861 |
goto out;
|
862 |
} |
863 |
|
864 |
if (ctx->Pflag) {
|
865 |
void *cmp_buf = malloc(ctx->qiov.size);
|
866 |
|
867 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
868 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
869 |
printf("Pattern verification failed at offset %lld, "
|
870 |
"%zd bytes\n",
|
871 |
(long long) ctx->offset, ctx->qiov.size); |
872 |
} |
873 |
free(cmp_buf); |
874 |
} |
875 |
|
876 |
if (ctx->qflag) {
|
877 |
goto out;
|
878 |
} |
879 |
|
880 |
if (ctx->vflag) {
|
881 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
882 |
} |
883 |
|
884 |
/* Finally, report back -- -C gives a parsable format */
|
885 |
t2 = tsub(t2, ctx->t1); |
886 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
887 |
ctx->qiov.size, 1, ctx->Cflag);
|
888 |
out:
|
889 |
qemu_io_free(ctx->buf); |
890 |
free(ctx); |
891 |
} |
892 |
|
893 |
static void |
894 |
aio_read_help(void)
|
895 |
{ |
896 |
printf( |
897 |
"\n"
|
898 |
" asynchronously reads a range of bytes from the given offset\n"
|
899 |
"\n"
|
900 |
" Example:\n"
|
901 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
902 |
"\n"
|
903 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
904 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
905 |
" The read is performed asynchronously and should the aio_flush command \n"
|
906 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
907 |
" -C, -- report statistics in a machine parsable format\n"
|
908 |
" -P, -- use a pattern to verify read data\n"
|
909 |
" -v, -- dump buffer to standard output\n"
|
910 |
" -q, -- quite mode, do not show I/O statistics\n"
|
911 |
"\n");
|
912 |
} |
913 |
|
914 |
static int |
915 |
aio_read_f(int argc, char **argv) |
916 |
{ |
917 |
int nr_iov, c;
|
918 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
919 |
BlockDriverAIOCB *acb; |
920 |
|
921 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
922 |
switch (c) {
|
923 |
case 'C': |
924 |
ctx->Cflag = 1;
|
925 |
break;
|
926 |
case 'P': |
927 |
ctx->Pflag = 1;
|
928 |
ctx->pattern = parse_pattern(optarg); |
929 |
if (ctx->pattern < 0) |
930 |
return 0; |
931 |
break;
|
932 |
case 'q': |
933 |
ctx->qflag = 1;
|
934 |
break;
|
935 |
case 'v': |
936 |
ctx->vflag = 1;
|
937 |
break;
|
938 |
default:
|
939 |
free(ctx); |
940 |
return command_usage(&aio_read_cmd);
|
941 |
} |
942 |
} |
943 |
|
944 |
if (optind > argc - 2) { |
945 |
free(ctx); |
946 |
return command_usage(&aio_read_cmd);
|
947 |
} |
948 |
|
949 |
ctx->offset = cvtnum(argv[optind]); |
950 |
if (ctx->offset < 0) { |
951 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
952 |
free(ctx); |
953 |
return 0; |
954 |
} |
955 |
optind++; |
956 |
|
957 |
if (ctx->offset & 0x1ff) { |
958 |
printf("offset %lld is not sector aligned\n",
|
959 |
(long long)ctx->offset); |
960 |
free(ctx); |
961 |
return 0; |
962 |
} |
963 |
|
964 |
nr_iov = argc - optind; |
965 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
966 |
|
967 |
gettimeofday(&ctx->t1, NULL);
|
968 |
acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
969 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
970 |
if (!acb) {
|
971 |
free(ctx->buf); |
972 |
free(ctx); |
973 |
return -EIO;
|
974 |
} |
975 |
|
976 |
return 0; |
977 |
} |
978 |
|
979 |
static const cmdinfo_t aio_read_cmd = { |
980 |
.name = "aio_read",
|
981 |
.cfunc = aio_read_f, |
982 |
.argmin = 2,
|
983 |
.argmax = -1,
|
984 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
985 |
.oneline = "asynchronously reads a number of bytes",
|
986 |
.help = aio_read_help, |
987 |
}; |
988 |
|
989 |
static const cmdinfo_t aio_write_cmd; |
990 |
|
991 |
static void |
992 |
aio_write_help(void)
|
993 |
{ |
994 |
printf( |
995 |
"\n"
|
996 |
" asynchronously writes a range of bytes from the given offset source \n"
|
997 |
" from multiple buffers\n"
|
998 |
"\n"
|
999 |
" Example:\n"
|
1000 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
1001 |
"\n"
|
1002 |
" Writes into a segment of the currently open file, using a buffer\n"
|
1003 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
1004 |
" The write is performed asynchronously and should the aio_flush command \n"
|
1005 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
1006 |
" -P, -- use different pattern to fill file\n"
|
1007 |
" -C, -- report statistics in a machine parsable format\n"
|
1008 |
" -q, -- quite mode, do not show I/O statistics\n"
|
1009 |
"\n");
|
1010 |
} |
1011 |
|
1012 |
|
1013 |
static int |
1014 |
aio_write_f(int argc, char **argv) |
1015 |
{ |
1016 |
int nr_iov, c;
|
1017 |
int pattern = 0xcd; |
1018 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
1019 |
BlockDriverAIOCB *acb; |
1020 |
|
1021 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
1022 |
switch (c) {
|
1023 |
case 'C': |
1024 |
ctx->Cflag = 1;
|
1025 |
break;
|
1026 |
case 'q': |
1027 |
ctx->qflag = 1;
|
1028 |
break;
|
1029 |
case 'P': |
1030 |
pattern = parse_pattern(optarg); |
1031 |
if (pattern < 0) |
1032 |
return 0; |
1033 |
break;
|
1034 |
default:
|
1035 |
free(ctx); |
1036 |
return command_usage(&aio_write_cmd);
|
1037 |
} |
1038 |
} |
1039 |
|
1040 |
if (optind > argc - 2) { |
1041 |
free(ctx); |
1042 |
return command_usage(&aio_write_cmd);
|
1043 |
} |
1044 |
|
1045 |
ctx->offset = cvtnum(argv[optind]); |
1046 |
if (ctx->offset < 0) { |
1047 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1048 |
free(ctx); |
1049 |
return 0; |
1050 |
} |
1051 |
optind++; |
1052 |
|
1053 |
if (ctx->offset & 0x1ff) { |
1054 |
printf("offset %lld is not sector aligned\n",
|
1055 |
(long long)ctx->offset); |
1056 |
free(ctx); |
1057 |
return 0; |
1058 |
} |
1059 |
|
1060 |
nr_iov = argc - optind; |
1061 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1062 |
|
1063 |
gettimeofday(&ctx->t1, NULL);
|
1064 |
acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1065 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1066 |
if (!acb) {
|
1067 |
free(ctx->buf); |
1068 |
free(ctx); |
1069 |
return -EIO;
|
1070 |
} |
1071 |
|
1072 |
return 0; |
1073 |
} |
1074 |
|
1075 |
static const cmdinfo_t aio_write_cmd = { |
1076 |
.name = "aio_write",
|
1077 |
.cfunc = aio_write_f, |
1078 |
.argmin = 2,
|
1079 |
.argmax = -1,
|
1080 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1081 |
.oneline = "asynchronously writes a number of bytes",
|
1082 |
.help = aio_write_help, |
1083 |
}; |
1084 |
|
1085 |
static int |
1086 |
aio_flush_f(int argc, char **argv) |
1087 |
{ |
1088 |
qemu_aio_flush(); |
1089 |
return 0; |
1090 |
} |
1091 |
|
1092 |
static const cmdinfo_t aio_flush_cmd = { |
1093 |
.name = "aio_flush",
|
1094 |
.cfunc = aio_flush_f, |
1095 |
.oneline = "completes all outstanding aio requets"
|
1096 |
}; |
1097 |
|
1098 |
static int |
1099 |
flush_f(int argc, char **argv) |
1100 |
{ |
1101 |
bdrv_flush(bs); |
1102 |
return 0; |
1103 |
} |
1104 |
|
1105 |
static const cmdinfo_t flush_cmd = { |
1106 |
.name = "flush",
|
1107 |
.altname = "f",
|
1108 |
.cfunc = flush_f, |
1109 |
.oneline = "flush all in-core file state to disk",
|
1110 |
}; |
1111 |
|
1112 |
static int |
1113 |
truncate_f(int argc, char **argv) |
1114 |
{ |
1115 |
int64_t offset; |
1116 |
int ret;
|
1117 |
|
1118 |
offset = cvtnum(argv[1]);
|
1119 |
if (offset < 0) { |
1120 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1121 |
return 0; |
1122 |
} |
1123 |
|
1124 |
ret = bdrv_truncate(bs, offset); |
1125 |
if (ret < 0) { |
1126 |
printf("truncate: %s", strerror(ret));
|
1127 |
return 0; |
1128 |
} |
1129 |
|
1130 |
return 0; |
1131 |
} |
1132 |
|
1133 |
static const cmdinfo_t truncate_cmd = { |
1134 |
.name = "truncate",
|
1135 |
.altname = "t",
|
1136 |
.cfunc = truncate_f, |
1137 |
.argmin = 1,
|
1138 |
.argmax = 1,
|
1139 |
.args = "off",
|
1140 |
.oneline = "truncates the current file at the given offset",
|
1141 |
}; |
1142 |
|
1143 |
static int |
1144 |
length_f(int argc, char **argv) |
1145 |
{ |
1146 |
int64_t size; |
1147 |
char s1[64]; |
1148 |
|
1149 |
size = bdrv_getlength(bs); |
1150 |
if (size < 0) { |
1151 |
printf("getlength: %s", strerror(size));
|
1152 |
return 0; |
1153 |
} |
1154 |
|
1155 |
cvtstr(size, s1, sizeof(s1));
|
1156 |
printf("%s\n", s1);
|
1157 |
return 0; |
1158 |
} |
1159 |
|
1160 |
|
1161 |
static const cmdinfo_t length_cmd = { |
1162 |
.name = "length",
|
1163 |
.altname = "l",
|
1164 |
.cfunc = length_f, |
1165 |
.oneline = "gets the length of the current file",
|
1166 |
}; |
1167 |
|
1168 |
|
1169 |
static int |
1170 |
info_f(int argc, char **argv) |
1171 |
{ |
1172 |
BlockDriverInfo bdi; |
1173 |
char s1[64], s2[64]; |
1174 |
int ret;
|
1175 |
|
1176 |
if (bs->drv && bs->drv->format_name)
|
1177 |
printf("format name: %s\n", bs->drv->format_name);
|
1178 |
if (bs->drv && bs->drv->protocol_name)
|
1179 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1180 |
|
1181 |
ret = bdrv_get_info(bs, &bdi); |
1182 |
if (ret)
|
1183 |
return 0; |
1184 |
|
1185 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1186 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1187 |
|
1188 |
printf("cluster size: %s\n", s1);
|
1189 |
printf("vm state offset: %s\n", s2);
|
1190 |
|
1191 |
return 0; |
1192 |
} |
1193 |
|
1194 |
|
1195 |
|
1196 |
static const cmdinfo_t info_cmd = { |
1197 |
.name = "info",
|
1198 |
.altname = "i",
|
1199 |
.cfunc = info_f, |
1200 |
.oneline = "prints information about the current file",
|
1201 |
}; |
1202 |
|
1203 |
static int |
1204 |
alloc_f(int argc, char **argv) |
1205 |
{ |
1206 |
int64_t offset; |
1207 |
int nb_sectors, remaining;
|
1208 |
char s1[64]; |
1209 |
int num, sum_alloc;
|
1210 |
int ret;
|
1211 |
|
1212 |
offset = cvtnum(argv[1]);
|
1213 |
if (offset & 0x1ff) { |
1214 |
printf("offset %lld is not sector aligned\n",
|
1215 |
(long long)offset); |
1216 |
return 0; |
1217 |
} |
1218 |
|
1219 |
if (argc == 3) |
1220 |
nb_sectors = cvtnum(argv[2]);
|
1221 |
else
|
1222 |
nb_sectors = 1;
|
1223 |
|
1224 |
remaining = nb_sectors; |
1225 |
sum_alloc = 0;
|
1226 |
while (remaining) {
|
1227 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
1228 |
remaining -= num; |
1229 |
if (ret) {
|
1230 |
sum_alloc += num; |
1231 |
} |
1232 |
} |
1233 |
|
1234 |
cvtstr(offset, s1, sizeof(s1));
|
1235 |
|
1236 |
if (nb_sectors == 1) |
1237 |
printf("sector allocated at offset %s\n", s1);
|
1238 |
else
|
1239 |
printf("%d/%d sectors allocated at offset %s\n",
|
1240 |
sum_alloc, nb_sectors, s1); |
1241 |
return 0; |
1242 |
} |
1243 |
|
1244 |
static const cmdinfo_t alloc_cmd = { |
1245 |
.name = "alloc",
|
1246 |
.altname = "a",
|
1247 |
.argmin = 1,
|
1248 |
.argmax = 2,
|
1249 |
.cfunc = alloc_f, |
1250 |
.args = "off [sectors]",
|
1251 |
.oneline = "checks if a sector is present in the file",
|
1252 |
}; |
1253 |
|
1254 |
static int |
1255 |
close_f(int argc, char **argv) |
1256 |
{ |
1257 |
bdrv_close(bs); |
1258 |
bs = NULL;
|
1259 |
return 0; |
1260 |
} |
1261 |
|
1262 |
static const cmdinfo_t close_cmd = { |
1263 |
.name = "close",
|
1264 |
.altname = "c",
|
1265 |
.cfunc = close_f, |
1266 |
.oneline = "close the current open file",
|
1267 |
}; |
1268 |
|
1269 |
static int openfile(char *name, int flags, int growable) |
1270 |
{ |
1271 |
if (bs) {
|
1272 |
fprintf(stderr, "file open already, try 'help close'\n");
|
1273 |
return 1; |
1274 |
} |
1275 |
|
1276 |
bs = bdrv_new("hda");
|
1277 |
if (!bs)
|
1278 |
return 1; |
1279 |
|
1280 |
if (growable) {
|
1281 |
flags |= BDRV_O_FILE; |
1282 |
} |
1283 |
|
1284 |
if (bdrv_open(bs, name, flags) == -1) { |
1285 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1286 |
bs = NULL;
|
1287 |
return 1; |
1288 |
} |
1289 |
|
1290 |
if (growable) {
|
1291 |
bs->growable = 1;
|
1292 |
} |
1293 |
return 0; |
1294 |
} |
1295 |
|
1296 |
static void |
1297 |
open_help(void)
|
1298 |
{ |
1299 |
printf( |
1300 |
"\n"
|
1301 |
" opens a new file in the requested mode\n"
|
1302 |
"\n"
|
1303 |
" Example:\n"
|
1304 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1305 |
"\n"
|
1306 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1307 |
" -C, -- create new file if it doesn't exist\n"
|
1308 |
" -r, -- open file read-only\n"
|
1309 |
" -s, -- use snapshot file\n"
|
1310 |
" -n, -- disable host cache\n"
|
1311 |
" -g, -- allow file to grow (only applies to protocols)"
|
1312 |
"\n");
|
1313 |
} |
1314 |
|
1315 |
static const cmdinfo_t open_cmd; |
1316 |
|
1317 |
static int |
1318 |
open_f(int argc, char **argv) |
1319 |
{ |
1320 |
int flags = 0; |
1321 |
int readonly = 0; |
1322 |
int growable = 0; |
1323 |
int c;
|
1324 |
|
1325 |
while ((c = getopt(argc, argv, "snCrg")) != EOF) { |
1326 |
switch (c) {
|
1327 |
case 's': |
1328 |
flags |= BDRV_O_SNAPSHOT; |
1329 |
break;
|
1330 |
case 'n': |
1331 |
flags |= BDRV_O_NOCACHE; |
1332 |
break;
|
1333 |
case 'C': |
1334 |
flags |= BDRV_O_CREAT; |
1335 |
break;
|
1336 |
case 'r': |
1337 |
readonly = 1;
|
1338 |
break;
|
1339 |
case 'g': |
1340 |
growable = 1;
|
1341 |
break;
|
1342 |
default:
|
1343 |
return command_usage(&open_cmd);
|
1344 |
} |
1345 |
} |
1346 |
|
1347 |
if (readonly)
|
1348 |
flags |= BDRV_O_RDONLY; |
1349 |
else
|
1350 |
flags |= BDRV_O_RDWR; |
1351 |
|
1352 |
if (optind != argc - 1) |
1353 |
return command_usage(&open_cmd);
|
1354 |
|
1355 |
return openfile(argv[optind], flags, growable);
|
1356 |
} |
1357 |
|
1358 |
static const cmdinfo_t open_cmd = { |
1359 |
.name = "open",
|
1360 |
.altname = "o",
|
1361 |
.cfunc = open_f, |
1362 |
.argmin = 1,
|
1363 |
.argmax = -1,
|
1364 |
.flags = CMD_NOFILE_OK, |
1365 |
.args = "[-Crsn] [path]",
|
1366 |
.oneline = "open the file specified by path",
|
1367 |
.help = open_help, |
1368 |
}; |
1369 |
|
1370 |
static int |
1371 |
init_args_command( |
1372 |
int index)
|
1373 |
{ |
1374 |
/* only one device allowed so far */
|
1375 |
if (index >= 1) |
1376 |
return 0; |
1377 |
return ++index;
|
1378 |
} |
1379 |
|
1380 |
static int |
1381 |
init_check_command( |
1382 |
const cmdinfo_t *ct)
|
1383 |
{ |
1384 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
1385 |
return 1; |
1386 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1387 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1388 |
return 0; |
1389 |
} |
1390 |
return 1; |
1391 |
} |
1392 |
|
1393 |
static void usage(const char *name) |
1394 |
{ |
1395 |
printf( |
1396 |
"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
|
1397 |
"QEMU Disk exerciser\n"
|
1398 |
"\n"
|
1399 |
" -C, --create create new file if it doesn't exist\n"
|
1400 |
" -c, --cmd command to execute\n"
|
1401 |
" -r, --read-only export read-only\n"
|
1402 |
" -s, --snapshot use snapshot file\n"
|
1403 |
" -n, --nocache disable host cache\n"
|
1404 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
1405 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1406 |
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
|
1407 |
" -h, --help display this help and exit\n"
|
1408 |
" -V, --version output version information and exit\n"
|
1409 |
"\n",
|
1410 |
name); |
1411 |
} |
1412 |
|
1413 |
|
1414 |
int main(int argc, char **argv) |
1415 |
{ |
1416 |
int readonly = 0; |
1417 |
int growable = 0; |
1418 |
const char *sopt = "hVc:Crsnmgk"; |
1419 |
struct option lopt[] = {
|
1420 |
{ "help", 0, NULL, 'h' }, |
1421 |
{ "version", 0, NULL, 'V' }, |
1422 |
{ "offset", 1, NULL, 'o' }, |
1423 |
{ "cmd", 1, NULL, 'c' }, |
1424 |
{ "create", 0, NULL, 'C' }, |
1425 |
{ "read-only", 0, NULL, 'r' }, |
1426 |
{ "snapshot", 0, NULL, 's' }, |
1427 |
{ "nocache", 0, NULL, 'n' }, |
1428 |
{ "misalign", 0, NULL, 'm' }, |
1429 |
{ "growable", 0, NULL, 'g' }, |
1430 |
{ "native-aio", 0, NULL, 'k' }, |
1431 |
{ NULL, 0, NULL, 0 } |
1432 |
}; |
1433 |
int c;
|
1434 |
int opt_index = 0; |
1435 |
int flags = 0; |
1436 |
|
1437 |
progname = basename(argv[0]);
|
1438 |
|
1439 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1440 |
switch (c) {
|
1441 |
case 's': |
1442 |
flags |= BDRV_O_SNAPSHOT; |
1443 |
break;
|
1444 |
case 'n': |
1445 |
flags |= BDRV_O_NOCACHE; |
1446 |
break;
|
1447 |
case 'c': |
1448 |
add_user_command(optarg); |
1449 |
break;
|
1450 |
case 'C': |
1451 |
flags |= BDRV_O_CREAT; |
1452 |
break;
|
1453 |
case 'r': |
1454 |
readonly = 1;
|
1455 |
break;
|
1456 |
case 'm': |
1457 |
misalign = 1;
|
1458 |
break;
|
1459 |
case 'g': |
1460 |
growable = 1;
|
1461 |
break;
|
1462 |
case 'k': |
1463 |
flags |= BDRV_O_NATIVE_AIO; |
1464 |
break;
|
1465 |
case 'V': |
1466 |
printf("%s version %s\n", progname, VERSION);
|
1467 |
exit(0);
|
1468 |
case 'h': |
1469 |
usage(progname); |
1470 |
exit(0);
|
1471 |
default:
|
1472 |
usage(progname); |
1473 |
exit(1);
|
1474 |
} |
1475 |
} |
1476 |
|
1477 |
if ((argc - optind) > 1) { |
1478 |
usage(progname); |
1479 |
exit(1);
|
1480 |
} |
1481 |
|
1482 |
bdrv_init(); |
1483 |
|
1484 |
/* initialize commands */
|
1485 |
quit_init(); |
1486 |
help_init(); |
1487 |
add_command(&open_cmd); |
1488 |
add_command(&close_cmd); |
1489 |
add_command(&read_cmd); |
1490 |
add_command(&readv_cmd); |
1491 |
add_command(&write_cmd); |
1492 |
add_command(&writev_cmd); |
1493 |
add_command(&aio_read_cmd); |
1494 |
add_command(&aio_write_cmd); |
1495 |
add_command(&aio_flush_cmd); |
1496 |
add_command(&flush_cmd); |
1497 |
add_command(&truncate_cmd); |
1498 |
add_command(&length_cmd); |
1499 |
add_command(&info_cmd); |
1500 |
add_command(&alloc_cmd); |
1501 |
|
1502 |
add_args_command(init_args_command); |
1503 |
add_check_command(init_check_command); |
1504 |
|
1505 |
/* open the device */
|
1506 |
if (readonly)
|
1507 |
flags |= BDRV_O_RDONLY; |
1508 |
else
|
1509 |
flags |= BDRV_O_RDWR; |
1510 |
|
1511 |
if ((argc - optind) == 1) |
1512 |
openfile(argv[optind], flags, growable); |
1513 |
command_loop(); |
1514 |
|
1515 |
/*
|
1516 |
* Make sure all outstanding requests get flushed the program exits.
|
1517 |
*/
|
1518 |
qemu_aio_flush(); |
1519 |
|
1520 |
if (bs)
|
1521 |
bdrv_close(bs); |
1522 |
return 0; |
1523 |
} |