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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/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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|
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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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|
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#define CMD_NOFILE_OK 0x01 |
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|
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char *progname;
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static BlockDriverState *bs;
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|
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static int misalign; |
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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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|
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for (i = 0, p = buffer; i < len; i += 16) { |
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const uint8_t *s = p;
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|
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printf("%08llx: ", (unsigned long long)offset + i); |
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for (j = 0; j < 16 && i + j < len; j++, p++) |
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printf("%02x ", *p);
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printf(" ");
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for (j = 0; j < 16 && i + j < len; j++, s++) { |
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if (isalnum(*s))
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printf("%c", *s);
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else
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printf(".");
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} |
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printf("\n");
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} |
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} |
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|
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static void |
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print_report(const char *op, struct timeval *t, int64_t offset, |
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int count, int total, int cnt, int Cflag) |
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{ |
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char s1[64], s2[64], ts[64]; |
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|
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timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); |
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if (!Cflag) {
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cvtstr((double)total, s1, sizeof(s1)); |
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cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); |
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printf("%s %d/%d bytes at offset %lld\n",
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op, total, count, (long long)offset); |
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printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n",
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s1, cnt, ts, s2, tdiv((double)cnt, *t));
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} else {/* bytes,ops,time,bytes/sec,ops/sec */ |
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printf("%d,%d,%s,%.3f,%.3f\n",
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total, cnt, ts, |
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tdiv((double)total, *t),
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tdiv((double)cnt, *t));
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} |
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} |
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|
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/*
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* Parse multiple length statements for vectored I/O, and construct an I/O
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* vector matching it.
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*/
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static void * |
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create_iovec(QEMUIOVector *qiov, char **argv, int nr_iov, int pattern) |
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{ |
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size_t *sizes = calloc(nr_iov, sizeof(size_t));
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size_t count = 0;
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void *buf, *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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|
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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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} |
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sizes[i] = len; |
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count += len; |
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} |
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|
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qemu_iovec_init(qiov, nr_iov); |
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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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|
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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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} |
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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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|
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ret = bdrv_write(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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} |
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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); |
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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_load_vmstate(char *buf, int64_t offset, int count, int *total) |
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{ |
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*total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); |
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if (*total < 0) |
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return *total;
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return 1; |
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} |
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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); |
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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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#define NOT_DONE 0x7fffffff |
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static void aio_rw_done(void *opaque, int ret) |
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{ |
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*(int *)opaque = ret;
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} |
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static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) |
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{ |
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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); |
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if (!acb)
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return -EIO;
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while (async_ret == NOT_DONE)
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qemu_aio_wait(); |
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*total = qiov->size; |
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return async_ret < 0 ? async_ret : 1; |
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} |
228 |
|
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static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) |
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{ |
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BlockDriverAIOCB *acb; |
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int async_ret = NOT_DONE;
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|
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acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, |
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aio_rw_done, &async_ret); |
236 |
if (!acb)
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return -EIO;
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|
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while (async_ret == NOT_DONE)
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qemu_aio_wait(); |
241 |
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*total = qiov->size; |
243 |
return async_ret < 0 ? async_ret : 1; |
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} |
245 |
|
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|
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static const cmdinfo_t read_cmd; |
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|
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static void |
250 |
read_help(void)
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{ |
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printf( |
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"\n"
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" reads a range of bytes from the given offset\n"
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"\n"
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" 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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"\n"
|
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" Reads a segment of the currently open file, optionally dumping it to the\n"
|
260 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
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" -b, -- read from the VM state rather than the virtual disk\n"
|
262 |
" -C, -- report statistics in a machine parsable format\n"
|
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" -l, -- length for pattern verification (only with -P)\n"
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264 |
" -p, -- use bdrv_pread to read the file\n"
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" -P, -- use a pattern to verify read data\n"
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" -q, -- quite mode, do not show I/O statistics\n"
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" -s, -- start offset for pattern verification (only with -P)\n"
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" -v, -- dump buffer to standard output\n"
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"\n");
|
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} |
271 |
|
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static int |
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read_f(int argc, char **argv) |
274 |
{ |
275 |
struct timeval t1, t2;
|
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int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; |
277 |
int Pflag = 0, sflag = 0, lflag = 0, bflag = 0; |
278 |
int c, cnt;
|
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char *buf;
|
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int64_t offset; |
281 |
int count;
|
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/* Some compilers get confused and warn if this is not initialized. */
|
283 |
int total = 0; |
284 |
int pattern = 0, pattern_offset = 0, pattern_count = 0; |
285 |
|
286 |
while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) { |
287 |
switch (c) {
|
288 |
case 'b': |
289 |
bflag = 1;
|
290 |
break;
|
291 |
case 'C': |
292 |
Cflag = 1;
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293 |
break;
|
294 |
case 'l': |
295 |
lflag = 1;
|
296 |
pattern_count = cvtnum(optarg); |
297 |
if (pattern_count < 0) { |
298 |
printf("non-numeric length argument -- %s\n", optarg);
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299 |
return 0; |
300 |
} |
301 |
break;
|
302 |
case 'p': |
303 |
pflag = 1;
|
304 |
break;
|
305 |
case 'P': |
306 |
Pflag = 1;
|
307 |
pattern = atoi(optarg); |
308 |
break;
|
309 |
case 'q': |
310 |
qflag = 1;
|
311 |
break;
|
312 |
case 's': |
313 |
sflag = 1;
|
314 |
pattern_offset = cvtnum(optarg); |
315 |
if (pattern_offset < 0) { |
316 |
printf("non-numeric length argument -- %s\n", optarg);
|
317 |
return 0; |
318 |
} |
319 |
break;
|
320 |
case 'v': |
321 |
vflag = 1;
|
322 |
break;
|
323 |
default:
|
324 |
return command_usage(&read_cmd);
|
325 |
} |
326 |
} |
327 |
|
328 |
if (optind != argc - 2) |
329 |
return command_usage(&read_cmd);
|
330 |
|
331 |
if (bflag && pflag) {
|
332 |
printf("-b and -p cannot be specified at the same time\n");
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333 |
return 0; |
334 |
} |
335 |
|
336 |
offset = cvtnum(argv[optind]); |
337 |
if (offset < 0) { |
338 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
339 |
return 0; |
340 |
} |
341 |
|
342 |
optind++; |
343 |
count = cvtnum(argv[optind]); |
344 |
if (count < 0) { |
345 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
346 |
return 0; |
347 |
} |
348 |
|
349 |
if (!Pflag && (lflag || sflag)) {
|
350 |
return command_usage(&read_cmd);
|
351 |
} |
352 |
|
353 |
if (!lflag) {
|
354 |
pattern_count = count - pattern_offset; |
355 |
} |
356 |
|
357 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
358 |
printf("pattern verfication range exceeds end of read data\n");
|
359 |
return 0; |
360 |
} |
361 |
|
362 |
if (!pflag)
|
363 |
if (offset & 0x1ff) { |
364 |
printf("offset %lld is not sector aligned\n",
|
365 |
(long long)offset); |
366 |
return 0; |
367 |
|
368 |
if (count & 0x1ff) { |
369 |
printf("count %d is not sector aligned\n",
|
370 |
count); |
371 |
return 0; |
372 |
} |
373 |
} |
374 |
|
375 |
buf = qemu_io_alloc(count, 0xab);
|
376 |
|
377 |
gettimeofday(&t1, NULL);
|
378 |
if (pflag)
|
379 |
cnt = do_pread(buf, offset, count, &total); |
380 |
else if (bflag) |
381 |
cnt = do_load_vmstate(buf, offset, count, &total); |
382 |
else
|
383 |
cnt = do_read(buf, offset, count, &total); |
384 |
gettimeofday(&t2, NULL);
|
385 |
|
386 |
if (cnt < 0) { |
387 |
printf("read failed: %s\n", strerror(-cnt));
|
388 |
goto out;
|
389 |
} |
390 |
|
391 |
if (Pflag) {
|
392 |
void* cmp_buf = malloc(pattern_count);
|
393 |
memset(cmp_buf, pattern, pattern_count); |
394 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
395 |
printf("Pattern verification failed at offset %lld, "
|
396 |
"%d bytes\n",
|
397 |
(long long) offset + pattern_offset, pattern_count); |
398 |
} |
399 |
free(cmp_buf); |
400 |
} |
401 |
|
402 |
if (qflag)
|
403 |
goto out;
|
404 |
|
405 |
if (vflag)
|
406 |
dump_buffer(buf, offset, count); |
407 |
|
408 |
/* Finally, report back -- -C gives a parsable format */
|
409 |
t2 = tsub(t2, t1); |
410 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
411 |
|
412 |
out:
|
413 |
qemu_io_free(buf); |
414 |
|
415 |
return 0; |
416 |
} |
417 |
|
418 |
static const cmdinfo_t read_cmd = { |
419 |
.name = "read",
|
420 |
.altname = "r",
|
421 |
.cfunc = read_f, |
422 |
.argmin = 2,
|
423 |
.argmax = -1,
|
424 |
.args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
|
425 |
.oneline = "reads a number of bytes at a specified offset",
|
426 |
.help = read_help, |
427 |
}; |
428 |
|
429 |
static const cmdinfo_t readv_cmd; |
430 |
|
431 |
static void |
432 |
readv_help(void)
|
433 |
{ |
434 |
printf( |
435 |
"\n"
|
436 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
437 |
"\n"
|
438 |
" Example:\n"
|
439 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
440 |
"\n"
|
441 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
442 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
443 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
444 |
" -C, -- report statistics in a machine parsable format\n"
|
445 |
" -P, -- use a pattern to verify read data\n"
|
446 |
" -v, -- dump buffer to standard output\n"
|
447 |
" -q, -- quite mode, do not show I/O statistics\n"
|
448 |
"\n");
|
449 |
} |
450 |
|
451 |
static int |
452 |
readv_f(int argc, char **argv) |
453 |
{ |
454 |
struct timeval t1, t2;
|
455 |
int Cflag = 0, qflag = 0, vflag = 0; |
456 |
int c, cnt;
|
457 |
char *buf;
|
458 |
int64_t offset; |
459 |
int total;
|
460 |
int nr_iov;
|
461 |
QEMUIOVector qiov; |
462 |
int pattern = 0; |
463 |
int Pflag = 0; |
464 |
|
465 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
466 |
switch (c) {
|
467 |
case 'C': |
468 |
Cflag = 1;
|
469 |
break;
|
470 |
case 'P': |
471 |
Pflag = 1;
|
472 |
pattern = atoi(optarg); |
473 |
break;
|
474 |
case 'q': |
475 |
qflag = 1;
|
476 |
break;
|
477 |
case 'v': |
478 |
vflag = 1;
|
479 |
break;
|
480 |
default:
|
481 |
return command_usage(&readv_cmd);
|
482 |
} |
483 |
} |
484 |
|
485 |
if (optind > argc - 2) |
486 |
return command_usage(&readv_cmd);
|
487 |
|
488 |
|
489 |
offset = cvtnum(argv[optind]); |
490 |
if (offset < 0) { |
491 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
492 |
return 0; |
493 |
} |
494 |
optind++; |
495 |
|
496 |
if (offset & 0x1ff) { |
497 |
printf("offset %lld is not sector aligned\n",
|
498 |
(long long)offset); |
499 |
return 0; |
500 |
} |
501 |
|
502 |
nr_iov = argc - optind; |
503 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
|
504 |
|
505 |
gettimeofday(&t1, NULL);
|
506 |
cnt = do_aio_readv(&qiov, offset, &total); |
507 |
gettimeofday(&t2, NULL);
|
508 |
|
509 |
if (cnt < 0) { |
510 |
printf("readv failed: %s\n", strerror(-cnt));
|
511 |
goto out;
|
512 |
} |
513 |
|
514 |
if (Pflag) {
|
515 |
void* cmp_buf = malloc(qiov.size);
|
516 |
memset(cmp_buf, pattern, qiov.size); |
517 |
if (memcmp(buf, cmp_buf, qiov.size)) {
|
518 |
printf("Pattern verification failed at offset %lld, "
|
519 |
"%zd bytes\n",
|
520 |
(long long) offset, qiov.size); |
521 |
} |
522 |
free(cmp_buf); |
523 |
} |
524 |
|
525 |
if (qflag)
|
526 |
goto out;
|
527 |
|
528 |
if (vflag)
|
529 |
dump_buffer(buf, offset, qiov.size); |
530 |
|
531 |
/* Finally, report back -- -C gives a parsable format */
|
532 |
t2 = tsub(t2, t1); |
533 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
534 |
|
535 |
out:
|
536 |
qemu_io_free(buf); |
537 |
return 0; |
538 |
} |
539 |
|
540 |
static const cmdinfo_t readv_cmd = { |
541 |
.name = "readv",
|
542 |
.cfunc = readv_f, |
543 |
.argmin = 2,
|
544 |
.argmax = -1,
|
545 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
546 |
.oneline = "reads a number of bytes at a specified offset",
|
547 |
.help = readv_help, |
548 |
}; |
549 |
|
550 |
static const cmdinfo_t write_cmd; |
551 |
|
552 |
static void |
553 |
write_help(void)
|
554 |
{ |
555 |
printf( |
556 |
"\n"
|
557 |
" writes a range of bytes from the given offset\n"
|
558 |
"\n"
|
559 |
" Example:\n"
|
560 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
561 |
"\n"
|
562 |
" Writes into a segment of the currently open file, using a buffer\n"
|
563 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
564 |
" -b, -- write to the VM state rather than the virtual disk\n"
|
565 |
" -p, -- use bdrv_pwrite to write the file\n"
|
566 |
" -P, -- use different pattern to fill file\n"
|
567 |
" -C, -- report statistics in a machine parsable format\n"
|
568 |
" -q, -- quite mode, do not show I/O statistics\n"
|
569 |
"\n");
|
570 |
} |
571 |
|
572 |
static int |
573 |
write_f(int argc, char **argv) |
574 |
{ |
575 |
struct timeval t1, t2;
|
576 |
int Cflag = 0, pflag = 0, qflag = 0, bflag = 0; |
577 |
int c, cnt;
|
578 |
char *buf;
|
579 |
int64_t offset; |
580 |
int count;
|
581 |
/* Some compilers get confused and warn if this is not initialized. */
|
582 |
int total = 0; |
583 |
int pattern = 0xcd; |
584 |
|
585 |
while ((c = getopt(argc, argv, "bCpP:q")) != EOF) { |
586 |
switch (c) {
|
587 |
case 'b': |
588 |
bflag = 1;
|
589 |
break;
|
590 |
case 'C': |
591 |
Cflag = 1;
|
592 |
break;
|
593 |
case 'p': |
594 |
pflag = 1;
|
595 |
break;
|
596 |
case 'P': |
597 |
pattern = atoi(optarg); |
598 |
break;
|
599 |
case 'q': |
600 |
qflag = 1;
|
601 |
break;
|
602 |
default:
|
603 |
return command_usage(&write_cmd);
|
604 |
} |
605 |
} |
606 |
|
607 |
if (optind != argc - 2) |
608 |
return command_usage(&write_cmd);
|
609 |
|
610 |
if (bflag && pflag) {
|
611 |
printf("-b and -p cannot be specified at the same time\n");
|
612 |
return 0; |
613 |
} |
614 |
|
615 |
offset = cvtnum(argv[optind]); |
616 |
if (offset < 0) { |
617 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
618 |
return 0; |
619 |
} |
620 |
|
621 |
optind++; |
622 |
count = cvtnum(argv[optind]); |
623 |
if (count < 0) { |
624 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
625 |
return 0; |
626 |
} |
627 |
|
628 |
if (!pflag) {
|
629 |
if (offset & 0x1ff) { |
630 |
printf("offset %lld is not sector aligned\n",
|
631 |
(long long)offset); |
632 |
return 0; |
633 |
} |
634 |
|
635 |
if (count & 0x1ff) { |
636 |
printf("count %d is not sector aligned\n",
|
637 |
count); |
638 |
return 0; |
639 |
} |
640 |
} |
641 |
|
642 |
buf = qemu_io_alloc(count, pattern); |
643 |
|
644 |
gettimeofday(&t1, NULL);
|
645 |
if (pflag)
|
646 |
cnt = do_pwrite(buf, offset, count, &total); |
647 |
else if (bflag) |
648 |
cnt = do_save_vmstate(buf, offset, count, &total); |
649 |
else
|
650 |
cnt = do_write(buf, offset, count, &total); |
651 |
gettimeofday(&t2, NULL);
|
652 |
|
653 |
if (cnt < 0) { |
654 |
printf("write failed: %s\n", strerror(-cnt));
|
655 |
goto out;
|
656 |
} |
657 |
|
658 |
if (qflag)
|
659 |
goto out;
|
660 |
|
661 |
/* Finally, report back -- -C gives a parsable format */
|
662 |
t2 = tsub(t2, t1); |
663 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
664 |
|
665 |
out:
|
666 |
qemu_io_free(buf); |
667 |
|
668 |
return 0; |
669 |
} |
670 |
|
671 |
static const cmdinfo_t write_cmd = { |
672 |
.name = "write",
|
673 |
.altname = "w",
|
674 |
.cfunc = write_f, |
675 |
.argmin = 2,
|
676 |
.argmax = -1,
|
677 |
.args = "[-abCpq] [-P pattern ] off len",
|
678 |
.oneline = "writes a number of bytes at a specified offset",
|
679 |
.help = write_help, |
680 |
}; |
681 |
|
682 |
static const cmdinfo_t writev_cmd; |
683 |
|
684 |
static void |
685 |
writev_help(void)
|
686 |
{ |
687 |
printf( |
688 |
"\n"
|
689 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
690 |
"\n"
|
691 |
" Example:\n"
|
692 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
693 |
"\n"
|
694 |
" Writes into a segment of the currently open file, using a buffer\n"
|
695 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
696 |
" -P, -- use different pattern to fill file\n"
|
697 |
" -C, -- report statistics in a machine parsable format\n"
|
698 |
" -q, -- quite mode, do not show I/O statistics\n"
|
699 |
"\n");
|
700 |
} |
701 |
|
702 |
static int |
703 |
writev_f(int argc, char **argv) |
704 |
{ |
705 |
struct timeval t1, t2;
|
706 |
int Cflag = 0, qflag = 0; |
707 |
int c, cnt;
|
708 |
char *buf;
|
709 |
int64_t offset; |
710 |
int total;
|
711 |
int nr_iov;
|
712 |
int pattern = 0xcd; |
713 |
QEMUIOVector qiov; |
714 |
|
715 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
716 |
switch (c) {
|
717 |
case 'C': |
718 |
Cflag = 1;
|
719 |
break;
|
720 |
case 'q': |
721 |
qflag = 1;
|
722 |
break;
|
723 |
case 'P': |
724 |
pattern = atoi(optarg); |
725 |
break;
|
726 |
default:
|
727 |
return command_usage(&writev_cmd);
|
728 |
} |
729 |
} |
730 |
|
731 |
if (optind > argc - 2) |
732 |
return command_usage(&writev_cmd);
|
733 |
|
734 |
offset = cvtnum(argv[optind]); |
735 |
if (offset < 0) { |
736 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
737 |
return 0; |
738 |
} |
739 |
optind++; |
740 |
|
741 |
if (offset & 0x1ff) { |
742 |
printf("offset %lld is not sector aligned\n",
|
743 |
(long long)offset); |
744 |
return 0; |
745 |
} |
746 |
|
747 |
nr_iov = argc - optind; |
748 |
buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern); |
749 |
|
750 |
gettimeofday(&t1, NULL);
|
751 |
cnt = do_aio_writev(&qiov, offset, &total); |
752 |
gettimeofday(&t2, NULL);
|
753 |
|
754 |
if (cnt < 0) { |
755 |
printf("writev failed: %s\n", strerror(-cnt));
|
756 |
goto out;
|
757 |
} |
758 |
|
759 |
if (qflag)
|
760 |
goto out;
|
761 |
|
762 |
/* Finally, report back -- -C gives a parsable format */
|
763 |
t2 = tsub(t2, t1); |
764 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
765 |
out:
|
766 |
qemu_io_free(buf); |
767 |
return 0; |
768 |
} |
769 |
|
770 |
static const cmdinfo_t writev_cmd = { |
771 |
.name = "writev",
|
772 |
.cfunc = writev_f, |
773 |
.argmin = 2,
|
774 |
.argmax = -1,
|
775 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
776 |
.oneline = "writes a number of bytes at a specified offset",
|
777 |
.help = writev_help, |
778 |
}; |
779 |
|
780 |
struct aio_ctx {
|
781 |
QEMUIOVector qiov; |
782 |
int64_t offset; |
783 |
char *buf;
|
784 |
int qflag;
|
785 |
int vflag;
|
786 |
int Cflag;
|
787 |
int Pflag;
|
788 |
int pattern;
|
789 |
struct timeval t1;
|
790 |
}; |
791 |
|
792 |
static void |
793 |
aio_write_done(void *opaque, int ret) |
794 |
{ |
795 |
struct aio_ctx *ctx = opaque;
|
796 |
struct timeval t2;
|
797 |
|
798 |
gettimeofday(&t2, NULL);
|
799 |
|
800 |
|
801 |
if (ret < 0) { |
802 |
printf("aio_write failed: %s\n", strerror(-ret));
|
803 |
goto out;
|
804 |
} |
805 |
|
806 |
if (ctx->qflag) {
|
807 |
goto out;
|
808 |
} |
809 |
|
810 |
/* Finally, report back -- -C gives a parsable format */
|
811 |
t2 = tsub(t2, ctx->t1); |
812 |
print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
|
813 |
ctx->qiov.size, 1, ctx->Cflag);
|
814 |
out:
|
815 |
qemu_io_free(ctx->buf); |
816 |
free(ctx); |
817 |
} |
818 |
|
819 |
static const cmdinfo_t aio_read_cmd; |
820 |
|
821 |
static void |
822 |
aio_read_done(void *opaque, int ret) |
823 |
{ |
824 |
struct aio_ctx *ctx = opaque;
|
825 |
struct timeval t2;
|
826 |
|
827 |
gettimeofday(&t2, NULL);
|
828 |
|
829 |
if (ret < 0) { |
830 |
printf("readv failed: %s\n", strerror(-ret));
|
831 |
goto out;
|
832 |
} |
833 |
|
834 |
if (ctx->Pflag) {
|
835 |
void *cmp_buf = malloc(ctx->qiov.size);
|
836 |
|
837 |
memset(cmp_buf, ctx->pattern, ctx->qiov.size); |
838 |
if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
|
839 |
printf("Pattern verification failed at offset %lld, "
|
840 |
"%zd bytes\n",
|
841 |
(long long) ctx->offset, ctx->qiov.size); |
842 |
} |
843 |
free(cmp_buf); |
844 |
} |
845 |
|
846 |
if (ctx->qflag) {
|
847 |
goto out;
|
848 |
} |
849 |
|
850 |
if (ctx->vflag) {
|
851 |
dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size); |
852 |
} |
853 |
|
854 |
/* Finally, report back -- -C gives a parsable format */
|
855 |
t2 = tsub(t2, ctx->t1); |
856 |
print_report("read", &t2, ctx->offset, ctx->qiov.size,
|
857 |
ctx->qiov.size, 1, ctx->Cflag);
|
858 |
out:
|
859 |
qemu_io_free(ctx->buf); |
860 |
free(ctx); |
861 |
} |
862 |
|
863 |
static void |
864 |
aio_read_help(void)
|
865 |
{ |
866 |
printf( |
867 |
"\n"
|
868 |
" asynchronously reads a range of bytes from the given offset\n"
|
869 |
"\n"
|
870 |
" Example:\n"
|
871 |
" 'aio_read -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
872 |
"\n"
|
873 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
874 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
875 |
" The read is performed asynchronously and should the aio_flush command \n"
|
876 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
877 |
" -C, -- report statistics in a machine parsable format\n"
|
878 |
" -P, -- use a pattern to verify read data\n"
|
879 |
" -v, -- dump buffer to standard output\n"
|
880 |
" -q, -- quite mode, do not show I/O statistics\n"
|
881 |
"\n");
|
882 |
} |
883 |
|
884 |
static int |
885 |
aio_read_f(int argc, char **argv) |
886 |
{ |
887 |
int nr_iov, c;
|
888 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
889 |
BlockDriverAIOCB *acb; |
890 |
|
891 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
892 |
switch (c) {
|
893 |
case 'C': |
894 |
ctx->Cflag = 1;
|
895 |
break;
|
896 |
case 'P': |
897 |
ctx->Pflag = 1;
|
898 |
ctx->pattern = atoi(optarg); |
899 |
break;
|
900 |
case 'q': |
901 |
ctx->qflag = 1;
|
902 |
break;
|
903 |
case 'v': |
904 |
ctx->vflag = 1;
|
905 |
break;
|
906 |
default:
|
907 |
free(ctx); |
908 |
return command_usage(&aio_read_cmd);
|
909 |
} |
910 |
} |
911 |
|
912 |
if (optind > argc - 2) { |
913 |
free(ctx); |
914 |
return command_usage(&aio_read_cmd);
|
915 |
} |
916 |
|
917 |
ctx->offset = cvtnum(argv[optind]); |
918 |
if (ctx->offset < 0) { |
919 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
920 |
free(ctx); |
921 |
return 0; |
922 |
} |
923 |
optind++; |
924 |
|
925 |
if (ctx->offset & 0x1ff) { |
926 |
printf("offset %lld is not sector aligned\n",
|
927 |
(long long)ctx->offset); |
928 |
free(ctx); |
929 |
return 0; |
930 |
} |
931 |
|
932 |
nr_iov = argc - optind; |
933 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, 0xab);
|
934 |
|
935 |
gettimeofday(&ctx->t1, NULL);
|
936 |
acb = bdrv_aio_readv(bs, ctx->offset >> 9, &ctx->qiov,
|
937 |
ctx->qiov.size >> 9, aio_read_done, ctx);
|
938 |
if (!acb) {
|
939 |
free(ctx->buf); |
940 |
free(ctx); |
941 |
return -EIO;
|
942 |
} |
943 |
|
944 |
return 0; |
945 |
} |
946 |
|
947 |
static const cmdinfo_t aio_read_cmd = { |
948 |
.name = "aio_read",
|
949 |
.cfunc = aio_read_f, |
950 |
.argmin = 2,
|
951 |
.argmax = -1,
|
952 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
953 |
.oneline = "asynchronously reads a number of bytes",
|
954 |
.help = aio_read_help, |
955 |
}; |
956 |
|
957 |
static const cmdinfo_t aio_write_cmd; |
958 |
|
959 |
static void |
960 |
aio_write_help(void)
|
961 |
{ |
962 |
printf( |
963 |
"\n"
|
964 |
" asynchronously writes a range of bytes from the given offset source \n"
|
965 |
" from multiple buffers\n"
|
966 |
"\n"
|
967 |
" Example:\n"
|
968 |
" 'aio_write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
969 |
"\n"
|
970 |
" Writes into a segment of the currently open file, using a buffer\n"
|
971 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
972 |
" The write is performed asynchronously and should the aio_flush command \n"
|
973 |
" should be used to ensure all outstanding aio requests have been completed\n"
|
974 |
" -P, -- use different pattern to fill file\n"
|
975 |
" -C, -- report statistics in a machine parsable format\n"
|
976 |
" -q, -- quite mode, do not show I/O statistics\n"
|
977 |
"\n");
|
978 |
} |
979 |
|
980 |
|
981 |
static int |
982 |
aio_write_f(int argc, char **argv) |
983 |
{ |
984 |
int nr_iov, c;
|
985 |
int pattern = 0xcd; |
986 |
struct aio_ctx *ctx = calloc(1, sizeof(struct aio_ctx)); |
987 |
BlockDriverAIOCB *acb; |
988 |
|
989 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
990 |
switch (c) {
|
991 |
case 'C': |
992 |
ctx->Cflag = 1;
|
993 |
break;
|
994 |
case 'q': |
995 |
ctx->qflag = 1;
|
996 |
break;
|
997 |
case 'P': |
998 |
pattern = atoi(optarg); |
999 |
break;
|
1000 |
default:
|
1001 |
free(ctx); |
1002 |
return command_usage(&aio_write_cmd);
|
1003 |
} |
1004 |
} |
1005 |
|
1006 |
if (optind > argc - 2) { |
1007 |
free(ctx); |
1008 |
return command_usage(&aio_write_cmd);
|
1009 |
} |
1010 |
|
1011 |
ctx->offset = cvtnum(argv[optind]); |
1012 |
if (ctx->offset < 0) { |
1013 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
1014 |
free(ctx); |
1015 |
return 0; |
1016 |
} |
1017 |
optind++; |
1018 |
|
1019 |
if (ctx->offset & 0x1ff) { |
1020 |
printf("offset %lld is not sector aligned\n",
|
1021 |
(long long)ctx->offset); |
1022 |
free(ctx); |
1023 |
return 0; |
1024 |
} |
1025 |
|
1026 |
nr_iov = argc - optind; |
1027 |
ctx->buf = create_iovec(&ctx->qiov, &argv[optind], nr_iov, pattern); |
1028 |
|
1029 |
gettimeofday(&ctx->t1, NULL);
|
1030 |
acb = bdrv_aio_writev(bs, ctx->offset >> 9, &ctx->qiov,
|
1031 |
ctx->qiov.size >> 9, aio_write_done, ctx);
|
1032 |
if (!acb) {
|
1033 |
free(ctx->buf); |
1034 |
free(ctx); |
1035 |
return -EIO;
|
1036 |
} |
1037 |
|
1038 |
return 0; |
1039 |
} |
1040 |
|
1041 |
static const cmdinfo_t aio_write_cmd = { |
1042 |
.name = "aio_write",
|
1043 |
.cfunc = aio_write_f, |
1044 |
.argmin = 2,
|
1045 |
.argmax = -1,
|
1046 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
1047 |
.oneline = "asynchronously writes a number of bytes",
|
1048 |
.help = aio_write_help, |
1049 |
}; |
1050 |
|
1051 |
static int |
1052 |
aio_flush_f(int argc, char **argv) |
1053 |
{ |
1054 |
qemu_aio_flush(); |
1055 |
return 0; |
1056 |
} |
1057 |
|
1058 |
static const cmdinfo_t aio_flush_cmd = { |
1059 |
.name = "aio_flush",
|
1060 |
.cfunc = aio_flush_f, |
1061 |
.oneline = "completes all outstanding aio requets"
|
1062 |
}; |
1063 |
|
1064 |
static int |
1065 |
flush_f(int argc, char **argv) |
1066 |
{ |
1067 |
bdrv_flush(bs); |
1068 |
return 0; |
1069 |
} |
1070 |
|
1071 |
static const cmdinfo_t flush_cmd = { |
1072 |
.name = "flush",
|
1073 |
.altname = "f",
|
1074 |
.cfunc = flush_f, |
1075 |
.oneline = "flush all in-core file state to disk",
|
1076 |
}; |
1077 |
|
1078 |
static int |
1079 |
truncate_f(int argc, char **argv) |
1080 |
{ |
1081 |
int64_t offset; |
1082 |
int ret;
|
1083 |
|
1084 |
offset = cvtnum(argv[1]);
|
1085 |
if (offset < 0) { |
1086 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
1087 |
return 0; |
1088 |
} |
1089 |
|
1090 |
ret = bdrv_truncate(bs, offset); |
1091 |
if (ret < 0) { |
1092 |
printf("truncate: %s", strerror(ret));
|
1093 |
return 0; |
1094 |
} |
1095 |
|
1096 |
return 0; |
1097 |
} |
1098 |
|
1099 |
static const cmdinfo_t truncate_cmd = { |
1100 |
.name = "truncate",
|
1101 |
.altname = "t",
|
1102 |
.cfunc = truncate_f, |
1103 |
.argmin = 1,
|
1104 |
.argmax = 1,
|
1105 |
.args = "off",
|
1106 |
.oneline = "truncates the current file at the given offset",
|
1107 |
}; |
1108 |
|
1109 |
static int |
1110 |
length_f(int argc, char **argv) |
1111 |
{ |
1112 |
int64_t size; |
1113 |
char s1[64]; |
1114 |
|
1115 |
size = bdrv_getlength(bs); |
1116 |
if (size < 0) { |
1117 |
printf("getlength: %s", strerror(size));
|
1118 |
return 0; |
1119 |
} |
1120 |
|
1121 |
cvtstr(size, s1, sizeof(s1));
|
1122 |
printf("%s\n", s1);
|
1123 |
return 0; |
1124 |
} |
1125 |
|
1126 |
|
1127 |
static const cmdinfo_t length_cmd = { |
1128 |
.name = "length",
|
1129 |
.altname = "l",
|
1130 |
.cfunc = length_f, |
1131 |
.oneline = "gets the length of the current file",
|
1132 |
}; |
1133 |
|
1134 |
|
1135 |
static int |
1136 |
info_f(int argc, char **argv) |
1137 |
{ |
1138 |
BlockDriverInfo bdi; |
1139 |
char s1[64], s2[64]; |
1140 |
int ret;
|
1141 |
|
1142 |
if (bs->drv && bs->drv->format_name)
|
1143 |
printf("format name: %s\n", bs->drv->format_name);
|
1144 |
if (bs->drv && bs->drv->protocol_name)
|
1145 |
printf("format name: %s\n", bs->drv->protocol_name);
|
1146 |
|
1147 |
ret = bdrv_get_info(bs, &bdi); |
1148 |
if (ret)
|
1149 |
return 0; |
1150 |
|
1151 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
1152 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
1153 |
|
1154 |
printf("cluster size: %s\n", s1);
|
1155 |
printf("vm state offset: %s\n", s2);
|
1156 |
|
1157 |
return 0; |
1158 |
} |
1159 |
|
1160 |
|
1161 |
|
1162 |
static const cmdinfo_t info_cmd = { |
1163 |
.name = "info",
|
1164 |
.altname = "i",
|
1165 |
.cfunc = info_f, |
1166 |
.oneline = "prints information about the current file",
|
1167 |
}; |
1168 |
|
1169 |
static int |
1170 |
alloc_f(int argc, char **argv) |
1171 |
{ |
1172 |
int64_t offset; |
1173 |
int nb_sectors;
|
1174 |
char s1[64]; |
1175 |
int num;
|
1176 |
int ret;
|
1177 |
const char *retstr; |
1178 |
|
1179 |
offset = cvtnum(argv[1]);
|
1180 |
if (offset & 0x1ff) { |
1181 |
printf("offset %lld is not sector aligned\n",
|
1182 |
(long long)offset); |
1183 |
return 0; |
1184 |
} |
1185 |
|
1186 |
if (argc == 3) |
1187 |
nb_sectors = cvtnum(argv[2]);
|
1188 |
else
|
1189 |
nb_sectors = 1;
|
1190 |
|
1191 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
1192 |
|
1193 |
cvtstr(offset, s1, sizeof(s1));
|
1194 |
|
1195 |
retstr = ret ? "allocated" : "not allocated"; |
1196 |
if (nb_sectors == 1) |
1197 |
printf("sector %s at offset %s\n", retstr, s1);
|
1198 |
else
|
1199 |
printf("%d/%d sectors %s at offset %s\n",
|
1200 |
num, nb_sectors, retstr, s1); |
1201 |
return 0; |
1202 |
} |
1203 |
|
1204 |
static const cmdinfo_t alloc_cmd = { |
1205 |
.name = "alloc",
|
1206 |
.altname = "a",
|
1207 |
.argmin = 1,
|
1208 |
.argmax = 2,
|
1209 |
.cfunc = alloc_f, |
1210 |
.args = "off [sectors]",
|
1211 |
.oneline = "checks if a sector is present in the file",
|
1212 |
}; |
1213 |
|
1214 |
static int |
1215 |
close_f(int argc, char **argv) |
1216 |
{ |
1217 |
bdrv_close(bs); |
1218 |
bs = NULL;
|
1219 |
return 0; |
1220 |
} |
1221 |
|
1222 |
static const cmdinfo_t close_cmd = { |
1223 |
.name = "close",
|
1224 |
.altname = "c",
|
1225 |
.cfunc = close_f, |
1226 |
.oneline = "close the current open file",
|
1227 |
}; |
1228 |
|
1229 |
static int openfile(char *name, int flags, int growable) |
1230 |
{ |
1231 |
if (bs) {
|
1232 |
fprintf(stderr, "file open already, try 'help close'\n");
|
1233 |
return 1; |
1234 |
} |
1235 |
|
1236 |
bs = bdrv_new("hda");
|
1237 |
if (!bs)
|
1238 |
return 1; |
1239 |
|
1240 |
if (growable) {
|
1241 |
flags |= BDRV_O_FILE; |
1242 |
} |
1243 |
|
1244 |
if (bdrv_open(bs, name, flags) == -1) { |
1245 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
1246 |
bs = NULL;
|
1247 |
return 1; |
1248 |
} |
1249 |
|
1250 |
if (growable) {
|
1251 |
bs->growable = 1;
|
1252 |
} |
1253 |
return 0; |
1254 |
} |
1255 |
|
1256 |
static void |
1257 |
open_help(void)
|
1258 |
{ |
1259 |
printf( |
1260 |
"\n"
|
1261 |
" opens a new file in the requested mode\n"
|
1262 |
"\n"
|
1263 |
" Example:\n"
|
1264 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
1265 |
"\n"
|
1266 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
1267 |
" -C, -- create new file if it doesn't exist\n"
|
1268 |
" -r, -- open file read-only\n"
|
1269 |
" -s, -- use snapshot file\n"
|
1270 |
" -n, -- disable host cache\n"
|
1271 |
" -g, -- allow file to grow (only applies to protocols)"
|
1272 |
"\n");
|
1273 |
} |
1274 |
|
1275 |
static const cmdinfo_t open_cmd; |
1276 |
|
1277 |
static int |
1278 |
open_f(int argc, char **argv) |
1279 |
{ |
1280 |
int flags = 0; |
1281 |
int readonly = 0; |
1282 |
int growable = 0; |
1283 |
int c;
|
1284 |
|
1285 |
while ((c = getopt(argc, argv, "snCrg")) != EOF) { |
1286 |
switch (c) {
|
1287 |
case 's': |
1288 |
flags |= BDRV_O_SNAPSHOT; |
1289 |
break;
|
1290 |
case 'n': |
1291 |
flags |= BDRV_O_NOCACHE; |
1292 |
break;
|
1293 |
case 'C': |
1294 |
flags |= BDRV_O_CREAT; |
1295 |
break;
|
1296 |
case 'r': |
1297 |
readonly = 1;
|
1298 |
break;
|
1299 |
case 'g': |
1300 |
growable = 1;
|
1301 |
break;
|
1302 |
default:
|
1303 |
return command_usage(&open_cmd);
|
1304 |
} |
1305 |
} |
1306 |
|
1307 |
if (readonly)
|
1308 |
flags |= BDRV_O_RDONLY; |
1309 |
else
|
1310 |
flags |= BDRV_O_RDWR; |
1311 |
|
1312 |
if (optind != argc - 1) |
1313 |
return command_usage(&open_cmd);
|
1314 |
|
1315 |
return openfile(argv[optind], flags, growable);
|
1316 |
} |
1317 |
|
1318 |
static const cmdinfo_t open_cmd = { |
1319 |
.name = "open",
|
1320 |
.altname = "o",
|
1321 |
.cfunc = open_f, |
1322 |
.argmin = 1,
|
1323 |
.argmax = -1,
|
1324 |
.flags = CMD_NOFILE_OK, |
1325 |
.args = "[-Crsn] [path]",
|
1326 |
.oneline = "open the file specified by path",
|
1327 |
.help = open_help, |
1328 |
}; |
1329 |
|
1330 |
static int |
1331 |
init_args_command( |
1332 |
int index)
|
1333 |
{ |
1334 |
/* only one device allowed so far */
|
1335 |
if (index >= 1) |
1336 |
return 0; |
1337 |
return ++index;
|
1338 |
} |
1339 |
|
1340 |
static int |
1341 |
init_check_command( |
1342 |
const cmdinfo_t *ct)
|
1343 |
{ |
1344 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
1345 |
return 1; |
1346 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1347 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1348 |
return 0; |
1349 |
} |
1350 |
return 1; |
1351 |
} |
1352 |
|
1353 |
static void usage(const char *name) |
1354 |
{ |
1355 |
printf( |
1356 |
"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
|
1357 |
"QEMU Disk exerciser\n"
|
1358 |
"\n"
|
1359 |
" -C, --create create new file if it doesn't exist\n"
|
1360 |
" -c, --cmd command to execute\n"
|
1361 |
" -r, --read-only export read-only\n"
|
1362 |
" -s, --snapshot use snapshot file\n"
|
1363 |
" -n, --nocache disable host cache\n"
|
1364 |
" -g, --growable allow file to grow (only applies to protocols)\n"
|
1365 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1366 |
" -h, --help display this help and exit\n"
|
1367 |
" -V, --version output version information and exit\n"
|
1368 |
"\n",
|
1369 |
name); |
1370 |
} |
1371 |
|
1372 |
|
1373 |
int main(int argc, char **argv) |
1374 |
{ |
1375 |
int readonly = 0; |
1376 |
int growable = 0; |
1377 |
const char *sopt = "hVc:Crsnmg"; |
1378 |
struct option lopt[] = {
|
1379 |
{ "help", 0, 0, 'h' }, |
1380 |
{ "version", 0, 0, 'V' }, |
1381 |
{ "offset", 1, 0, 'o' }, |
1382 |
{ "cmd", 1, 0, 'c' }, |
1383 |
{ "create", 0, 0, 'C' }, |
1384 |
{ "read-only", 0, 0, 'r' }, |
1385 |
{ "snapshot", 0, 0, 's' }, |
1386 |
{ "nocache", 0, 0, 'n' }, |
1387 |
{ "misalign", 0, 0, 'm' }, |
1388 |
{ "growable", 0, 0, 'g' }, |
1389 |
{ NULL, 0, 0, 0 } |
1390 |
}; |
1391 |
int c;
|
1392 |
int opt_index = 0; |
1393 |
int flags = 0; |
1394 |
|
1395 |
progname = basename(argv[0]);
|
1396 |
|
1397 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1398 |
switch (c) {
|
1399 |
case 's': |
1400 |
flags |= BDRV_O_SNAPSHOT; |
1401 |
break;
|
1402 |
case 'n': |
1403 |
flags |= BDRV_O_NOCACHE; |
1404 |
break;
|
1405 |
case 'c': |
1406 |
add_user_command(optarg); |
1407 |
break;
|
1408 |
case 'C': |
1409 |
flags |= BDRV_O_CREAT; |
1410 |
break;
|
1411 |
case 'r': |
1412 |
readonly = 1;
|
1413 |
break;
|
1414 |
case 'm': |
1415 |
misalign = 1;
|
1416 |
break;
|
1417 |
case 'g': |
1418 |
growable = 1;
|
1419 |
break;
|
1420 |
case 'V': |
1421 |
printf("%s version %s\n", progname, VERSION);
|
1422 |
exit(0);
|
1423 |
case 'h': |
1424 |
usage(progname); |
1425 |
exit(0);
|
1426 |
default:
|
1427 |
usage(progname); |
1428 |
exit(1);
|
1429 |
} |
1430 |
} |
1431 |
|
1432 |
if ((argc - optind) > 1) { |
1433 |
usage(progname); |
1434 |
exit(1);
|
1435 |
} |
1436 |
|
1437 |
bdrv_init(); |
1438 |
|
1439 |
/* initialize commands */
|
1440 |
quit_init(); |
1441 |
help_init(); |
1442 |
add_command(&open_cmd); |
1443 |
add_command(&close_cmd); |
1444 |
add_command(&read_cmd); |
1445 |
add_command(&readv_cmd); |
1446 |
add_command(&write_cmd); |
1447 |
add_command(&writev_cmd); |
1448 |
add_command(&aio_read_cmd); |
1449 |
add_command(&aio_write_cmd); |
1450 |
add_command(&aio_flush_cmd); |
1451 |
add_command(&flush_cmd); |
1452 |
add_command(&truncate_cmd); |
1453 |
add_command(&length_cmd); |
1454 |
add_command(&info_cmd); |
1455 |
add_command(&alloc_cmd); |
1456 |
|
1457 |
add_args_command(init_args_command); |
1458 |
add_check_command(init_check_command); |
1459 |
|
1460 |
/* open the device */
|
1461 |
if (readonly)
|
1462 |
flags |= BDRV_O_RDONLY; |
1463 |
else
|
1464 |
flags |= BDRV_O_RDWR; |
1465 |
|
1466 |
if ((argc - optind) == 1) |
1467 |
openfile(argv[optind], flags, growable); |
1468 |
command_loop(); |
1469 |
|
1470 |
/*
|
1471 |
* Make sure all outstanding requests get flushed the program exits.
|
1472 |
*/
|
1473 |
qemu_aio_flush(); |
1474 |
|
1475 |
if (bs)
|
1476 |
bdrv_close(bs); |
1477 |
return 0; |
1478 |
} |