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c48101ae92
This patch adds a -P option to read and readv which allows to compare the read data to a given pattern. This can be used to verify data written by write -P. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7182 c046a42c-6fe2-441c-8c8c-71466251a162
1109 lines
21 KiB
C
1109 lines
21 KiB
C
/*
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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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#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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* 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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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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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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static void
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dump_buffer(char *buffer, int64_t offset, int len)
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{
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int i, j;
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char *p;
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for (i = 0, p = buffer; i < len; i += 16) {
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char *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((int)*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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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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}
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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);
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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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#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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}
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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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acb = bdrv_aio_writev(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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}
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static const cmdinfo_t read_cmd;
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static void
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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"
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" standard output stream (with -v option) for subsequent inspection.\n"
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" -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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" -C, -- report statistics in a machine parsable format\n"
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" -v, -- dump buffer to standard output\n"
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" -q, -- quite mode, do not show I/O statistics\n"
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"\n");
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}
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static int
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read_f(int argc, char **argv)
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{
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struct timeval t1, t2;
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int Cflag = 0, pflag = 0, qflag = 0, vflag = 0;
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int c, cnt;
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char *buf;
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int64_t offset;
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int count, total;
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int pattern = 0;
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int Pflag = 0;
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while ((c = getopt(argc, argv, "CpP:qv")) != EOF) {
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switch (c) {
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case 'C':
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Cflag = 1;
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break;
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case 'p':
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pflag = 1;
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break;
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case 'P':
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Pflag = 1;
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pattern = atoi(optarg);
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break;
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case 'q':
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qflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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default:
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return command_usage(&read_cmd);
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}
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}
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if (optind != argc - 2)
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return command_usage(&read_cmd);
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offset = cvtnum(argv[optind]);
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if (offset < 0) {
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printf("non-numeric length argument -- %s\n", argv[optind]);
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return 0;
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}
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optind++;
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count = cvtnum(argv[optind]);
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if (count < 0) {
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printf("non-numeric length argument -- %s\n", argv[optind]);
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return 0;
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}
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if (!pflag)
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if (offset & 0x1ff) {
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printf("offset %lld is not sector aligned\n",
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(long long)offset);
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return 0;
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if (count & 0x1ff) {
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printf("count %d is not sector aligned\n",
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count);
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return 0;
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}
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}
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buf = qemu_io_alloc(count, 0xab);
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gettimeofday(&t1, NULL);
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if (pflag)
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cnt = do_pread(buf, offset, count, &total);
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else
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cnt = do_read(buf, offset, count, &total);
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gettimeofday(&t2, NULL);
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if (cnt < 0) {
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printf("read failed: %s\n", strerror(-cnt));
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return 0;
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}
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if (Pflag) {
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void* cmp_buf = malloc(count);
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memset(cmp_buf, pattern, count);
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if (memcmp(buf, cmp_buf, count)) {
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printf("Pattern verification failed at offset %lld, "
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"%d bytes\n",
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(long long) offset, count);
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}
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free(cmp_buf);
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}
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if (qflag)
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return 0;
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if (vflag)
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dump_buffer(buf, offset, count);
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/* Finally, report back -- -C gives a parsable format */
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t2 = tsub(t2, t1);
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print_report("read", &t2, offset, count, total, cnt, Cflag);
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qemu_io_free(buf);
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return 0;
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}
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static const cmdinfo_t read_cmd = {
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.name = "read",
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.altname = "r",
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.cfunc = read_f,
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.argmin = 2,
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.argmax = -1,
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.args = "[-aCpqv] [-P pattern ] off len",
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.oneline = "reads a number of bytes at a specified offset",
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.help = read_help,
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};
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static const cmdinfo_t readv_cmd;
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static void
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readv_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 into multiple buffers\n"
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"\n"
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" Example:\n"
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" 'readv -v 512 1k 1k ' - dumps 2 kilobytes 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"
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" standard output stream (with -v option) for subsequent inspection.\n"
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" Uses multiple iovec buffers if more than one byte range is specified.\n"
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" -C, -- report statistics in a machine parsable format\n"
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" -P, -- use a pattern to verify read data\n"
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" -v, -- dump buffer to standard output\n"
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" -q, -- quite mode, do not show I/O statistics\n"
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"\n");
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}
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static int
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readv_f(int argc, char **argv)
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{
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struct timeval t1, t2;
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int Cflag = 0, qflag = 0, vflag = 0;
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int c, cnt;
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char *buf, *p;
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int64_t offset;
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int count = 0, total;
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int nr_iov, i;
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QEMUIOVector qiov;
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int pattern = 0;
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int Pflag = 0;
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while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
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switch (c) {
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case 'C':
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Cflag = 1;
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break;
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case 'P':
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Pflag = 1;
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pattern = atoi(optarg);
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break;
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case 'q':
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qflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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default:
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return command_usage(&readv_cmd);
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}
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}
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if (optind > argc - 2)
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return command_usage(&readv_cmd);
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offset = cvtnum(argv[optind]);
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if (offset < 0) {
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printf("non-numeric length argument -- %s\n", argv[optind]);
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return 0;
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}
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optind++;
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if (offset & 0x1ff) {
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printf("offset %lld is not sector aligned\n",
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(long long)offset);
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return 0;
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}
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if (count & 0x1ff) {
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printf("count %d is not sector aligned\n",
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count);
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return 0;
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}
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for (i = optind; i < argc; i++) {
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size_t len;
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len = cvtnum(argv[i]);
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if (len < 0) {
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printf("non-numeric length argument -- %s\n", argv[i]);
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return 0;
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}
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count += len;
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}
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nr_iov = argc - optind;
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qemu_iovec_init(&qiov, nr_iov);
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buf = p = qemu_io_alloc(count, 0xab);
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for (i = 0; i < nr_iov; i++) {
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size_t len;
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len = cvtnum(argv[optind]);
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if (len < 0) {
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printf("non-numeric length argument -- %s\n",
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argv[optind]);
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return 0;
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}
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qemu_iovec_add(&qiov, p, len);
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p += len;
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optind++;
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}
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gettimeofday(&t1, NULL);
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cnt = do_aio_readv(&qiov, offset, &total);
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gettimeofday(&t2, NULL);
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if (cnt < 0) {
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printf("readv failed: %s\n", strerror(-cnt));
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return 0;
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}
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if (Pflag) {
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void* cmp_buf = malloc(count);
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memset(cmp_buf, pattern, count);
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if (memcmp(buf, cmp_buf, count)) {
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printf("Pattern verification failed at offset %lld, "
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"%d bytes\n",
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(long long) offset, count);
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}
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free(cmp_buf);
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}
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if (qflag)
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return 0;
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if (vflag)
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dump_buffer(buf, offset, qiov.size);
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/* Finally, report back -- -C gives a parsable format */
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t2 = tsub(t2, t1);
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print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
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qemu_io_free(buf);
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return 0;
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}
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static const cmdinfo_t readv_cmd = {
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.name = "readv",
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.cfunc = readv_f,
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.argmin = 2,
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.argmax = -1,
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.args = "[-Cqv] [-P pattern ] off len [len..]",
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.oneline = "reads a number of bytes at a specified offset",
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.help = readv_help,
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};
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|
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static const cmdinfo_t write_cmd;
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|
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static void
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write_help(void)
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{
|
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printf(
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"\n"
|
|
" writes a range of bytes from the given offset\n"
|
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"\n"
|
|
" Example:\n"
|
|
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
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"\n"
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" Writes into a segment of the currently open file, using a buffer\n"
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" filled with a set pattern (0xcdcdcdcd).\n"
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" -p, -- use bdrv_pwrite to write the file\n"
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" -P, -- use different pattern to fill file\n"
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" -C, -- report statistics in a machine parsable format\n"
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" -q, -- quite mode, do not show I/O statistics\n"
|
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"\n");
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}
|
|
|
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static int
|
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write_f(int argc, char **argv)
|
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{
|
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struct timeval t1, t2;
|
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int Cflag = 0, pflag = 0, qflag = 0;
|
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int c, cnt;
|
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char *buf;
|
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int64_t offset;
|
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int count, total;
|
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int pattern = 0xcd;
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|
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while ((c = getopt(argc, argv, "CpP:q")) != EOF) {
|
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switch (c) {
|
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case 'C':
|
|
Cflag = 1;
|
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break;
|
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case 'p':
|
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pflag = 1;
|
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break;
|
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case 'P':
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pattern = atoi(optarg);
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break;
|
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case 'q':
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qflag = 1;
|
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break;
|
|
default:
|
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return command_usage(&write_cmd);
|
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}
|
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}
|
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|
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if (optind != argc - 2)
|
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return command_usage(&write_cmd);
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|
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offset = cvtnum(argv[optind]);
|
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if (offset < 0) {
|
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printf("non-numeric length argument -- %s\n", argv[optind]);
|
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return 0;
|
|
}
|
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|
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optind++;
|
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count = cvtnum(argv[optind]);
|
|
if (count < 0) {
|
|
printf("non-numeric length argument -- %s\n", argv[optind]);
|
|
return 0;
|
|
}
|
|
|
|
if (!pflag) {
|
|
if (offset & 0x1ff) {
|
|
printf("offset %lld is not sector aligned\n",
|
|
(long long)offset);
|
|
return 0;
|
|
}
|
|
|
|
if (count & 0x1ff) {
|
|
printf("count %d is not sector aligned\n",
|
|
count);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
buf = qemu_io_alloc(count, pattern);
|
|
|
|
gettimeofday(&t1, NULL);
|
|
if (pflag)
|
|
cnt = do_pwrite(buf, offset, count, &total);
|
|
else
|
|
cnt = do_write(buf, offset, count, &total);
|
|
gettimeofday(&t2, NULL);
|
|
|
|
if (cnt < 0) {
|
|
printf("write failed: %s\n", strerror(-cnt));
|
|
return 0;
|
|
}
|
|
|
|
if (qflag)
|
|
return 0;
|
|
|
|
/* Finally, report back -- -C gives a parsable format */
|
|
t2 = tsub(t2, t1);
|
|
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
|
|
|
qemu_io_free(buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t write_cmd = {
|
|
.name = "write",
|
|
.altname = "w",
|
|
.cfunc = write_f,
|
|
.argmin = 2,
|
|
.argmax = -1,
|
|
.args = "[-aCpq] [-P pattern ] off len",
|
|
.oneline = "writes a number of bytes at a specified offset",
|
|
.help = write_help,
|
|
};
|
|
|
|
static const cmdinfo_t writev_cmd;
|
|
|
|
static void
|
|
writev_help(void)
|
|
{
|
|
printf(
|
|
"\n"
|
|
" writes a range of bytes from the given offset source from multiple buffers\n"
|
|
"\n"
|
|
" Example:\n"
|
|
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
|
"\n"
|
|
" Writes into a segment of the currently open file, using a buffer\n"
|
|
" filled with a set pattern (0xcdcdcdcd).\n"
|
|
" -P, -- use different pattern to fill file\n"
|
|
" -C, -- report statistics in a machine parsable format\n"
|
|
" -q, -- quite mode, do not show I/O statistics\n"
|
|
"\n");
|
|
}
|
|
|
|
static int
|
|
writev_f(int argc, char **argv)
|
|
{
|
|
struct timeval t1, t2;
|
|
int Cflag = 0, qflag = 0;
|
|
int c, cnt;
|
|
char *buf, *p;
|
|
int64_t offset;
|
|
int count = 0, total;
|
|
int nr_iov, i;
|
|
int pattern = 0xcd;
|
|
QEMUIOVector qiov;
|
|
|
|
while ((c = getopt(argc, argv, "CqP:")) != EOF) {
|
|
switch (c) {
|
|
case 'C':
|
|
Cflag = 1;
|
|
break;
|
|
case 'q':
|
|
qflag = 1;
|
|
break;
|
|
case 'P':
|
|
pattern = atoi(optarg);
|
|
break;
|
|
default:
|
|
return command_usage(&writev_cmd);
|
|
}
|
|
}
|
|
|
|
if (optind > argc - 2)
|
|
return command_usage(&writev_cmd);
|
|
|
|
offset = cvtnum(argv[optind]);
|
|
if (offset < 0) {
|
|
printf("non-numeric length argument -- %s\n", argv[optind]);
|
|
return 0;
|
|
}
|
|
optind++;
|
|
|
|
if (offset & 0x1ff) {
|
|
printf("offset %lld is not sector aligned\n",
|
|
(long long)offset);
|
|
return 0;
|
|
}
|
|
|
|
if (count & 0x1ff) {
|
|
printf("count %d is not sector aligned\n",
|
|
count);
|
|
return 0;
|
|
}
|
|
|
|
|
|
for (i = optind; i < argc; i++) {
|
|
size_t len;
|
|
|
|
len = cvtnum(argv[optind]);
|
|
if (len < 0) {
|
|
printf("non-numeric length argument -- %s\n", argv[i]);
|
|
return 0;
|
|
}
|
|
count += len;
|
|
}
|
|
|
|
nr_iov = argc - optind;
|
|
qemu_iovec_init(&qiov, nr_iov);
|
|
buf = p = qemu_io_alloc(count, pattern);
|
|
for (i = 0; i < nr_iov; i++) {
|
|
size_t len;
|
|
|
|
len = cvtnum(argv[optind]);
|
|
if (len < 0) {
|
|
printf("non-numeric length argument -- %s\n",
|
|
argv[optind]);
|
|
return 0;
|
|
}
|
|
|
|
qemu_iovec_add(&qiov, p, len);
|
|
p += len;
|
|
optind++;
|
|
}
|
|
|
|
gettimeofday(&t1, NULL);
|
|
cnt = do_aio_writev(&qiov, offset, &total);
|
|
gettimeofday(&t2, NULL);
|
|
|
|
if (cnt < 0) {
|
|
printf("writev failed: %s\n", strerror(-cnt));
|
|
return 0;
|
|
}
|
|
|
|
if (qflag)
|
|
return 0;
|
|
|
|
/* Finally, report back -- -C gives a parsable format */
|
|
t2 = tsub(t2, t1);
|
|
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
|
|
|
qemu_io_free(buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t writev_cmd = {
|
|
.name = "writev",
|
|
.cfunc = writev_f,
|
|
.argmin = 2,
|
|
.argmax = -1,
|
|
.args = "[-Cq] [-P pattern ] off len [len..]",
|
|
.oneline = "writes a number of bytes at a specified offset",
|
|
.help = writev_help,
|
|
};
|
|
|
|
static int
|
|
flush_f(int argc, char **argv)
|
|
{
|
|
bdrv_flush(bs);
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t flush_cmd = {
|
|
.name = "flush",
|
|
.altname = "f",
|
|
.cfunc = flush_f,
|
|
.oneline = "flush all in-core file state to disk",
|
|
};
|
|
|
|
static int
|
|
truncate_f(int argc, char **argv)
|
|
{
|
|
int64_t offset;
|
|
int ret;
|
|
|
|
offset = cvtnum(argv[1]);
|
|
if (offset < 0) {
|
|
printf("non-numeric truncate argument -- %s\n", argv[1]);
|
|
return 0;
|
|
}
|
|
|
|
ret = bdrv_truncate(bs, offset);
|
|
if (ret < 0) {
|
|
printf("truncate: %s", strerror(ret));
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t truncate_cmd = {
|
|
.name = "truncate",
|
|
.altname = "t",
|
|
.cfunc = truncate_f,
|
|
.argmin = 1,
|
|
.argmax = 1,
|
|
.args = "off",
|
|
.oneline = "truncates the current file at the given offset",
|
|
};
|
|
|
|
static int
|
|
length_f(int argc, char **argv)
|
|
{
|
|
int64_t size;
|
|
char s1[64];
|
|
|
|
size = bdrv_getlength(bs);
|
|
if (size < 0) {
|
|
printf("getlength: %s", strerror(size));
|
|
return 0;
|
|
}
|
|
|
|
cvtstr(size, s1, sizeof(s1));
|
|
printf("%s\n", s1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const cmdinfo_t length_cmd = {
|
|
.name = "length",
|
|
.altname = "l",
|
|
.cfunc = length_f,
|
|
.oneline = "gets the length of the current file",
|
|
};
|
|
|
|
|
|
static int
|
|
info_f(int argc, char **argv)
|
|
{
|
|
BlockDriverInfo bdi;
|
|
char s1[64], s2[64];
|
|
int ret;
|
|
|
|
if (bs->drv && bs->drv->format_name)
|
|
printf("format name: %s\n", bs->drv->format_name);
|
|
if (bs->drv && bs->drv->protocol_name)
|
|
printf("format name: %s\n", bs->drv->protocol_name);
|
|
|
|
ret = bdrv_get_info(bs, &bdi);
|
|
if (ret)
|
|
return 0;
|
|
|
|
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
|
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
|
|
|
printf("cluster size: %s\n", s1);
|
|
printf("vm state offset: %s\n", s2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static const cmdinfo_t info_cmd = {
|
|
.name = "info",
|
|
.altname = "i",
|
|
.cfunc = info_f,
|
|
.oneline = "prints information about the current file",
|
|
};
|
|
|
|
static int
|
|
alloc_f(int argc, char **argv)
|
|
{
|
|
int64_t offset;
|
|
int nb_sectors;
|
|
char s1[64];
|
|
int num;
|
|
int ret;
|
|
const char *retstr;
|
|
|
|
offset = cvtnum(argv[1]);
|
|
if (offset & 0x1ff) {
|
|
printf("offset %lld is not sector aligned\n",
|
|
(long long)offset);
|
|
return 0;
|
|
}
|
|
|
|
if (argc == 3)
|
|
nb_sectors = cvtnum(argv[2]);
|
|
else
|
|
nb_sectors = 1;
|
|
|
|
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
|
|
|
cvtstr(offset, s1, sizeof(s1));
|
|
|
|
retstr = ret ? "allocated" : "not allocated";
|
|
if (nb_sectors == 1)
|
|
printf("sector %s at offset %s\n", retstr, s1);
|
|
else
|
|
printf("%d/%d sectors %s at offset %s\n",
|
|
num, nb_sectors, retstr, s1);
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t alloc_cmd = {
|
|
.name = "alloc",
|
|
.altname = "a",
|
|
.argmin = 1,
|
|
.argmax = 2,
|
|
.cfunc = alloc_f,
|
|
.args = "off [sectors]",
|
|
.oneline = "checks if a sector is present in the file",
|
|
};
|
|
|
|
static int
|
|
close_f(int argc, char **argv)
|
|
{
|
|
bdrv_close(bs);
|
|
bs = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static const cmdinfo_t close_cmd = {
|
|
.name = "close",
|
|
.altname = "c",
|
|
.cfunc = close_f,
|
|
.oneline = "close the current open file",
|
|
};
|
|
|
|
static int openfile(char *name, int flags)
|
|
{
|
|
if (bs) {
|
|
fprintf(stderr, "file open already, try 'help close'\n");
|
|
return 1;
|
|
}
|
|
|
|
bs = bdrv_new("hda");
|
|
if (!bs)
|
|
return 1;
|
|
|
|
if (bdrv_open(bs, name, flags) == -1) {
|
|
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
|
bs = NULL;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
open_help(void)
|
|
{
|
|
printf(
|
|
"\n"
|
|
" opens a new file in the requested mode\n"
|
|
"\n"
|
|
" Example:\n"
|
|
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
|
"\n"
|
|
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
|
" -C, -- create new file if it doesn't exist\n"
|
|
" -r, -- open file read-only\n"
|
|
" -s, -- use snapshot file\n"
|
|
" -n, -- disable host cache\n"
|
|
"\n");
|
|
}
|
|
|
|
static const cmdinfo_t open_cmd;
|
|
|
|
static int
|
|
open_f(int argc, char **argv)
|
|
{
|
|
int flags = 0;
|
|
int readonly = 0;
|
|
int c;
|
|
|
|
while ((c = getopt(argc, argv, "snCr")) != EOF) {
|
|
switch (c) {
|
|
case 's':
|
|
flags |= BDRV_O_SNAPSHOT;
|
|
break;
|
|
case 'n':
|
|
flags |= BDRV_O_NOCACHE;
|
|
break;
|
|
case 'C':
|
|
flags |= BDRV_O_CREAT;
|
|
break;
|
|
case 'r':
|
|
readonly = 1;
|
|
break;
|
|
default:
|
|
return command_usage(&open_cmd);
|
|
}
|
|
}
|
|
|
|
if (readonly)
|
|
flags |= BDRV_O_RDONLY;
|
|
else
|
|
flags |= BDRV_O_RDWR;
|
|
|
|
if (optind != argc - 1)
|
|
return command_usage(&open_cmd);
|
|
|
|
return openfile(argv[optind], flags);
|
|
}
|
|
|
|
static const cmdinfo_t open_cmd = {
|
|
.name = "open",
|
|
.altname = "o",
|
|
.cfunc = open_f,
|
|
.argmin = 1,
|
|
.argmax = -1,
|
|
.flags = CMD_NOFILE_OK,
|
|
.args = "[-Crsn] [path]",
|
|
.oneline = "open the file specified by path",
|
|
.help = open_help,
|
|
};
|
|
|
|
static int
|
|
init_args_command(
|
|
int index)
|
|
{
|
|
/* only one device allowed so far */
|
|
if (index >= 1)
|
|
return 0;
|
|
return ++index;
|
|
}
|
|
|
|
static int
|
|
init_check_command(
|
|
const cmdinfo_t *ct)
|
|
{
|
|
if (ct->flags & CMD_FLAG_GLOBAL)
|
|
return 1;
|
|
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
|
fprintf(stderr, "no file open, try 'help open'\n");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void usage(const char *name)
|
|
{
|
|
printf(
|
|
"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
|
|
"QEMU Disk excerciser\n"
|
|
"\n"
|
|
" -C, --create create new file if it doesn't exist\n"
|
|
" -c, --cmd command to execute\n"
|
|
" -r, --read-only export read-only\n"
|
|
" -s, --snapshot use snapshot file\n"
|
|
" -n, --nocache disable host cache\n"
|
|
" -m, --misalign misalign allocations for O_DIRECT\n"
|
|
" -h, --help display this help and exit\n"
|
|
" -V, --version output version information and exit\n"
|
|
"\n",
|
|
name);
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int readonly = 0;
|
|
const char *sopt = "hVc:Crsnm";
|
|
struct option lopt[] = {
|
|
{ "help", 0, 0, 'h' },
|
|
{ "version", 0, 0, 'V' },
|
|
{ "offset", 1, 0, 'o' },
|
|
{ "cmd", 1, 0, 'c' },
|
|
{ "create", 0, 0, 'C' },
|
|
{ "read-only", 0, 0, 'r' },
|
|
{ "snapshot", 0, 0, 's' },
|
|
{ "nocache", 0, 0, 'n' },
|
|
{ "misalign", 0, 0, 'm' },
|
|
{ NULL, 0, 0, 0 }
|
|
};
|
|
int c;
|
|
int opt_index = 0;
|
|
int flags = 0;
|
|
|
|
progname = basename(argv[0]);
|
|
|
|
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
|
|
switch (c) {
|
|
case 's':
|
|
flags |= BDRV_O_SNAPSHOT;
|
|
break;
|
|
case 'n':
|
|
flags |= BDRV_O_NOCACHE;
|
|
break;
|
|
case 'c':
|
|
add_user_command(optarg);
|
|
break;
|
|
case 'C':
|
|
flags |= BDRV_O_CREAT;
|
|
break;
|
|
case 'r':
|
|
readonly = 1;
|
|
break;
|
|
case 'm':
|
|
misalign = 1;
|
|
break;
|
|
case 'V':
|
|
printf("%s version %s\n", progname, VERSION);
|
|
exit(0);
|
|
case 'h':
|
|
usage(progname);
|
|
exit(0);
|
|
default:
|
|
usage(progname);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if ((argc - optind) > 1) {
|
|
usage(progname);
|
|
exit(1);
|
|
}
|
|
|
|
bdrv_init();
|
|
|
|
/* initialize commands */
|
|
quit_init();
|
|
help_init();
|
|
add_command(&open_cmd);
|
|
add_command(&close_cmd);
|
|
add_command(&read_cmd);
|
|
add_command(&readv_cmd);
|
|
add_command(&write_cmd);
|
|
add_command(&writev_cmd);
|
|
add_command(&flush_cmd);
|
|
add_command(&truncate_cmd);
|
|
add_command(&length_cmd);
|
|
add_command(&info_cmd);
|
|
add_command(&alloc_cmd);
|
|
|
|
add_args_command(init_args_command);
|
|
add_check_command(init_check_command);
|
|
|
|
/* open the device */
|
|
if (readonly)
|
|
flags |= BDRV_O_RDONLY;
|
|
else
|
|
flags |= BDRV_O_RDWR;
|
|
|
|
if ((argc - optind) == 1)
|
|
openfile(argv[optind], flags);
|
|
command_loop();
|
|
|
|
if (bs)
|
|
bdrv_close(bs);
|
|
return 0;
|
|
}
|