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/*
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---|---|
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* Command line utility to exercise the QEMU I/O path.
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*
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* Copyright (C) 2009 Red Hat, Inc.
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* Copyright (c) 2003-2005 Silicon Graphics, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <sys/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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|
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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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* 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(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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|
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for (i = 0, p = buffer; i < len; i += 16) { |
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char *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((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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|
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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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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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); |
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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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|
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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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" -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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" -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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} |
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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 Pflag = 0, sflag = 0, lflag = 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, pattern_offset = 0, pattern_count = 0; |
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|
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while ((c = getopt(argc, argv, "Cl:pP:qs:v")) != 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 'l': |
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lflag = 1;
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pattern_count = cvtnum(optarg); |
224 |
if (pattern_count < 0) { |
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printf("non-numeric length argument -- %s\n", optarg);
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return 0; |
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} |
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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 's': |
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sflag = 1;
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pattern_offset = cvtnum(optarg); |
242 |
if (pattern_offset < 0) { |
243 |
printf("non-numeric length argument -- %s\n", optarg);
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return 0; |
245 |
} |
246 |
break;
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247 |
case 'v': |
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vflag = 1;
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break;
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250 |
default:
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return command_usage(&read_cmd);
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} |
253 |
} |
254 |
|
255 |
if (optind != argc - 2) |
256 |
return command_usage(&read_cmd);
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257 |
|
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offset = cvtnum(argv[optind]); |
259 |
if (offset < 0) { |
260 |
printf("non-numeric length argument -- %s\n", argv[optind]);
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return 0; |
262 |
} |
263 |
|
264 |
optind++; |
265 |
count = cvtnum(argv[optind]); |
266 |
if (count < 0) { |
267 |
printf("non-numeric length argument -- %s\n", argv[optind]);
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return 0; |
269 |
} |
270 |
|
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if (!Pflag && (lflag || sflag)) {
|
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return command_usage(&read_cmd);
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} |
274 |
|
275 |
if (!lflag) {
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pattern_count = count - pattern_offset; |
277 |
} |
278 |
|
279 |
if ((pattern_count < 0) || (pattern_count + pattern_offset > count)) { |
280 |
printf("pattern verfication range exceeds end of read data\n");
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return 0; |
282 |
} |
283 |
|
284 |
if (!pflag)
|
285 |
if (offset & 0x1ff) { |
286 |
printf("offset %lld is not sector aligned\n",
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287 |
(long long)offset); |
288 |
return 0; |
289 |
|
290 |
if (count & 0x1ff) { |
291 |
printf("count %d is not sector aligned\n",
|
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count); |
293 |
return 0; |
294 |
} |
295 |
} |
296 |
|
297 |
buf = qemu_io_alloc(count, 0xab);
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298 |
|
299 |
gettimeofday(&t1, NULL);
|
300 |
if (pflag)
|
301 |
cnt = do_pread(buf, offset, count, &total); |
302 |
else
|
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cnt = do_read(buf, offset, count, &total); |
304 |
gettimeofday(&t2, NULL);
|
305 |
|
306 |
if (cnt < 0) { |
307 |
printf("read failed: %s\n", strerror(-cnt));
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308 |
return 0; |
309 |
} |
310 |
|
311 |
if (Pflag) {
|
312 |
void* cmp_buf = malloc(pattern_count);
|
313 |
memset(cmp_buf, pattern, pattern_count); |
314 |
if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
|
315 |
printf("Pattern verification failed at offset %lld, "
|
316 |
"%d bytes\n",
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317 |
(long long) offset + pattern_offset, pattern_count); |
318 |
} |
319 |
free(cmp_buf); |
320 |
} |
321 |
|
322 |
if (qflag)
|
323 |
return 0; |
324 |
|
325 |
if (vflag)
|
326 |
dump_buffer(buf, offset, count); |
327 |
|
328 |
/* Finally, report back -- -C gives a parsable format */
|
329 |
t2 = tsub(t2, t1); |
330 |
print_report("read", &t2, offset, count, total, cnt, Cflag);
|
331 |
|
332 |
qemu_io_free(buf); |
333 |
|
334 |
return 0; |
335 |
} |
336 |
|
337 |
static const cmdinfo_t read_cmd = { |
338 |
.name = "read",
|
339 |
.altname = "r",
|
340 |
.cfunc = read_f, |
341 |
.argmin = 2,
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342 |
.argmax = -1,
|
343 |
.args = "[-aCpqv] [-P pattern [-s off] [-l len]] off len",
|
344 |
.oneline = "reads a number of bytes at a specified offset",
|
345 |
.help = read_help, |
346 |
}; |
347 |
|
348 |
static const cmdinfo_t readv_cmd; |
349 |
|
350 |
static void |
351 |
readv_help(void)
|
352 |
{ |
353 |
printf( |
354 |
"\n"
|
355 |
" reads a range of bytes from the given offset into multiple buffers\n"
|
356 |
"\n"
|
357 |
" Example:\n"
|
358 |
" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n"
|
359 |
"\n"
|
360 |
" Reads a segment of the currently open file, optionally dumping it to the\n"
|
361 |
" standard output stream (with -v option) for subsequent inspection.\n"
|
362 |
" Uses multiple iovec buffers if more than one byte range is specified.\n"
|
363 |
" -C, -- report statistics in a machine parsable format\n"
|
364 |
" -P, -- use a pattern to verify read data\n"
|
365 |
" -v, -- dump buffer to standard output\n"
|
366 |
" -q, -- quite mode, do not show I/O statistics\n"
|
367 |
"\n");
|
368 |
} |
369 |
|
370 |
static int |
371 |
readv_f(int argc, char **argv) |
372 |
{ |
373 |
struct timeval t1, t2;
|
374 |
int Cflag = 0, qflag = 0, vflag = 0; |
375 |
int c, cnt;
|
376 |
char *buf, *p;
|
377 |
int64_t offset; |
378 |
int count = 0, total; |
379 |
int nr_iov, i;
|
380 |
QEMUIOVector qiov; |
381 |
int pattern = 0; |
382 |
int Pflag = 0; |
383 |
|
384 |
while ((c = getopt(argc, argv, "CP:qv")) != EOF) { |
385 |
switch (c) {
|
386 |
case 'C': |
387 |
Cflag = 1;
|
388 |
break;
|
389 |
case 'P': |
390 |
Pflag = 1;
|
391 |
pattern = atoi(optarg); |
392 |
break;
|
393 |
case 'q': |
394 |
qflag = 1;
|
395 |
break;
|
396 |
case 'v': |
397 |
vflag = 1;
|
398 |
break;
|
399 |
default:
|
400 |
return command_usage(&readv_cmd);
|
401 |
} |
402 |
} |
403 |
|
404 |
if (optind > argc - 2) |
405 |
return command_usage(&readv_cmd);
|
406 |
|
407 |
|
408 |
offset = cvtnum(argv[optind]); |
409 |
if (offset < 0) { |
410 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
411 |
return 0; |
412 |
} |
413 |
optind++; |
414 |
|
415 |
if (offset & 0x1ff) { |
416 |
printf("offset %lld is not sector aligned\n",
|
417 |
(long long)offset); |
418 |
return 0; |
419 |
} |
420 |
|
421 |
if (count & 0x1ff) { |
422 |
printf("count %d is not sector aligned\n",
|
423 |
count); |
424 |
return 0; |
425 |
} |
426 |
|
427 |
for (i = optind; i < argc; i++) {
|
428 |
size_t len; |
429 |
|
430 |
len = cvtnum(argv[i]); |
431 |
if (len < 0) { |
432 |
printf("non-numeric length argument -- %s\n", argv[i]);
|
433 |
return 0; |
434 |
} |
435 |
count += len; |
436 |
} |
437 |
|
438 |
nr_iov = argc - optind; |
439 |
qemu_iovec_init(&qiov, nr_iov); |
440 |
buf = p = qemu_io_alloc(count, 0xab);
|
441 |
for (i = 0; i < nr_iov; i++) { |
442 |
size_t len; |
443 |
|
444 |
len = cvtnum(argv[optind]); |
445 |
if (len < 0) { |
446 |
printf("non-numeric length argument -- %s\n",
|
447 |
argv[optind]); |
448 |
return 0; |
449 |
} |
450 |
|
451 |
qemu_iovec_add(&qiov, p, len); |
452 |
p += len; |
453 |
optind++; |
454 |
} |
455 |
|
456 |
gettimeofday(&t1, NULL);
|
457 |
cnt = do_aio_readv(&qiov, offset, &total); |
458 |
gettimeofday(&t2, NULL);
|
459 |
|
460 |
if (cnt < 0) { |
461 |
printf("readv failed: %s\n", strerror(-cnt));
|
462 |
return 0; |
463 |
} |
464 |
|
465 |
if (Pflag) {
|
466 |
void* cmp_buf = malloc(count);
|
467 |
memset(cmp_buf, pattern, count); |
468 |
if (memcmp(buf, cmp_buf, count)) {
|
469 |
printf("Pattern verification failed at offset %lld, "
|
470 |
"%d bytes\n",
|
471 |
(long long) offset, count); |
472 |
} |
473 |
free(cmp_buf); |
474 |
} |
475 |
|
476 |
if (qflag)
|
477 |
return 0; |
478 |
|
479 |
if (vflag)
|
480 |
dump_buffer(buf, offset, qiov.size); |
481 |
|
482 |
/* Finally, report back -- -C gives a parsable format */
|
483 |
t2 = tsub(t2, t1); |
484 |
print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);
|
485 |
|
486 |
qemu_io_free(buf); |
487 |
|
488 |
return 0; |
489 |
} |
490 |
|
491 |
static const cmdinfo_t readv_cmd = { |
492 |
.name = "readv",
|
493 |
.cfunc = readv_f, |
494 |
.argmin = 2,
|
495 |
.argmax = -1,
|
496 |
.args = "[-Cqv] [-P pattern ] off len [len..]",
|
497 |
.oneline = "reads a number of bytes at a specified offset",
|
498 |
.help = readv_help, |
499 |
}; |
500 |
|
501 |
static const cmdinfo_t write_cmd; |
502 |
|
503 |
static void |
504 |
write_help(void)
|
505 |
{ |
506 |
printf( |
507 |
"\n"
|
508 |
" writes a range of bytes from the given offset\n"
|
509 |
"\n"
|
510 |
" Example:\n"
|
511 |
" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n"
|
512 |
"\n"
|
513 |
" Writes into a segment of the currently open file, using a buffer\n"
|
514 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
515 |
" -p, -- use bdrv_pwrite to write the file\n"
|
516 |
" -P, -- use different pattern to fill file\n"
|
517 |
" -C, -- report statistics in a machine parsable format\n"
|
518 |
" -q, -- quite mode, do not show I/O statistics\n"
|
519 |
"\n");
|
520 |
} |
521 |
|
522 |
static int |
523 |
write_f(int argc, char **argv) |
524 |
{ |
525 |
struct timeval t1, t2;
|
526 |
int Cflag = 0, pflag = 0, qflag = 0; |
527 |
int c, cnt;
|
528 |
char *buf;
|
529 |
int64_t offset; |
530 |
int count, total;
|
531 |
int pattern = 0xcd; |
532 |
|
533 |
while ((c = getopt(argc, argv, "CpP:q")) != EOF) { |
534 |
switch (c) {
|
535 |
case 'C': |
536 |
Cflag = 1;
|
537 |
break;
|
538 |
case 'p': |
539 |
pflag = 1;
|
540 |
break;
|
541 |
case 'P': |
542 |
pattern = atoi(optarg); |
543 |
break;
|
544 |
case 'q': |
545 |
qflag = 1;
|
546 |
break;
|
547 |
default:
|
548 |
return command_usage(&write_cmd);
|
549 |
} |
550 |
} |
551 |
|
552 |
if (optind != argc - 2) |
553 |
return command_usage(&write_cmd);
|
554 |
|
555 |
offset = cvtnum(argv[optind]); |
556 |
if (offset < 0) { |
557 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
558 |
return 0; |
559 |
} |
560 |
|
561 |
optind++; |
562 |
count = cvtnum(argv[optind]); |
563 |
if (count < 0) { |
564 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
565 |
return 0; |
566 |
} |
567 |
|
568 |
if (!pflag) {
|
569 |
if (offset & 0x1ff) { |
570 |
printf("offset %lld is not sector aligned\n",
|
571 |
(long long)offset); |
572 |
return 0; |
573 |
} |
574 |
|
575 |
if (count & 0x1ff) { |
576 |
printf("count %d is not sector aligned\n",
|
577 |
count); |
578 |
return 0; |
579 |
} |
580 |
} |
581 |
|
582 |
buf = qemu_io_alloc(count, pattern); |
583 |
|
584 |
gettimeofday(&t1, NULL);
|
585 |
if (pflag)
|
586 |
cnt = do_pwrite(buf, offset, count, &total); |
587 |
else
|
588 |
cnt = do_write(buf, offset, count, &total); |
589 |
gettimeofday(&t2, NULL);
|
590 |
|
591 |
if (cnt < 0) { |
592 |
printf("write failed: %s\n", strerror(-cnt));
|
593 |
return 0; |
594 |
} |
595 |
|
596 |
if (qflag)
|
597 |
return 0; |
598 |
|
599 |
/* Finally, report back -- -C gives a parsable format */
|
600 |
t2 = tsub(t2, t1); |
601 |
print_report("wrote", &t2, offset, count, total, cnt, Cflag);
|
602 |
|
603 |
qemu_io_free(buf); |
604 |
|
605 |
return 0; |
606 |
} |
607 |
|
608 |
static const cmdinfo_t write_cmd = { |
609 |
.name = "write",
|
610 |
.altname = "w",
|
611 |
.cfunc = write_f, |
612 |
.argmin = 2,
|
613 |
.argmax = -1,
|
614 |
.args = "[-aCpq] [-P pattern ] off len",
|
615 |
.oneline = "writes a number of bytes at a specified offset",
|
616 |
.help = write_help, |
617 |
}; |
618 |
|
619 |
static const cmdinfo_t writev_cmd; |
620 |
|
621 |
static void |
622 |
writev_help(void)
|
623 |
{ |
624 |
printf( |
625 |
"\n"
|
626 |
" writes a range of bytes from the given offset source from multiple buffers\n"
|
627 |
"\n"
|
628 |
" Example:\n"
|
629 |
" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n"
|
630 |
"\n"
|
631 |
" Writes into a segment of the currently open file, using a buffer\n"
|
632 |
" filled with a set pattern (0xcdcdcdcd).\n"
|
633 |
" -P, -- use different pattern to fill file\n"
|
634 |
" -C, -- report statistics in a machine parsable format\n"
|
635 |
" -q, -- quite mode, do not show I/O statistics\n"
|
636 |
"\n");
|
637 |
} |
638 |
|
639 |
static int |
640 |
writev_f(int argc, char **argv) |
641 |
{ |
642 |
struct timeval t1, t2;
|
643 |
int Cflag = 0, qflag = 0; |
644 |
int c, cnt;
|
645 |
char *buf, *p;
|
646 |
int64_t offset; |
647 |
int count = 0, total; |
648 |
int nr_iov, i;
|
649 |
int pattern = 0xcd; |
650 |
QEMUIOVector qiov; |
651 |
|
652 |
while ((c = getopt(argc, argv, "CqP:")) != EOF) { |
653 |
switch (c) {
|
654 |
case 'C': |
655 |
Cflag = 1;
|
656 |
break;
|
657 |
case 'q': |
658 |
qflag = 1;
|
659 |
break;
|
660 |
case 'P': |
661 |
pattern = atoi(optarg); |
662 |
break;
|
663 |
default:
|
664 |
return command_usage(&writev_cmd);
|
665 |
} |
666 |
} |
667 |
|
668 |
if (optind > argc - 2) |
669 |
return command_usage(&writev_cmd);
|
670 |
|
671 |
offset = cvtnum(argv[optind]); |
672 |
if (offset < 0) { |
673 |
printf("non-numeric length argument -- %s\n", argv[optind]);
|
674 |
return 0; |
675 |
} |
676 |
optind++; |
677 |
|
678 |
if (offset & 0x1ff) { |
679 |
printf("offset %lld is not sector aligned\n",
|
680 |
(long long)offset); |
681 |
return 0; |
682 |
} |
683 |
|
684 |
if (count & 0x1ff) { |
685 |
printf("count %d is not sector aligned\n",
|
686 |
count); |
687 |
return 0; |
688 |
} |
689 |
|
690 |
|
691 |
for (i = optind; i < argc; i++) {
|
692 |
size_t len; |
693 |
|
694 |
len = cvtnum(argv[optind]); |
695 |
if (len < 0) { |
696 |
printf("non-numeric length argument -- %s\n", argv[i]);
|
697 |
return 0; |
698 |
} |
699 |
count += len; |
700 |
} |
701 |
|
702 |
nr_iov = argc - optind; |
703 |
qemu_iovec_init(&qiov, nr_iov); |
704 |
buf = p = qemu_io_alloc(count, pattern); |
705 |
for (i = 0; i < nr_iov; i++) { |
706 |
size_t len; |
707 |
|
708 |
len = cvtnum(argv[optind]); |
709 |
if (len < 0) { |
710 |
printf("non-numeric length argument -- %s\n",
|
711 |
argv[optind]); |
712 |
return 0; |
713 |
} |
714 |
|
715 |
qemu_iovec_add(&qiov, p, len); |
716 |
p += len; |
717 |
optind++; |
718 |
} |
719 |
|
720 |
gettimeofday(&t1, NULL);
|
721 |
cnt = do_aio_writev(&qiov, offset, &total); |
722 |
gettimeofday(&t2, NULL);
|
723 |
|
724 |
if (cnt < 0) { |
725 |
printf("writev failed: %s\n", strerror(-cnt));
|
726 |
return 0; |
727 |
} |
728 |
|
729 |
if (qflag)
|
730 |
return 0; |
731 |
|
732 |
/* Finally, report back -- -C gives a parsable format */
|
733 |
t2 = tsub(t2, t1); |
734 |
print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag);
|
735 |
|
736 |
qemu_io_free(buf); |
737 |
|
738 |
return 0; |
739 |
} |
740 |
|
741 |
static const cmdinfo_t writev_cmd = { |
742 |
.name = "writev",
|
743 |
.cfunc = writev_f, |
744 |
.argmin = 2,
|
745 |
.argmax = -1,
|
746 |
.args = "[-Cq] [-P pattern ] off len [len..]",
|
747 |
.oneline = "writes a number of bytes at a specified offset",
|
748 |
.help = writev_help, |
749 |
}; |
750 |
|
751 |
static int |
752 |
flush_f(int argc, char **argv) |
753 |
{ |
754 |
bdrv_flush(bs); |
755 |
return 0; |
756 |
} |
757 |
|
758 |
static const cmdinfo_t flush_cmd = { |
759 |
.name = "flush",
|
760 |
.altname = "f",
|
761 |
.cfunc = flush_f, |
762 |
.oneline = "flush all in-core file state to disk",
|
763 |
}; |
764 |
|
765 |
static int |
766 |
truncate_f(int argc, char **argv) |
767 |
{ |
768 |
int64_t offset; |
769 |
int ret;
|
770 |
|
771 |
offset = cvtnum(argv[1]);
|
772 |
if (offset < 0) { |
773 |
printf("non-numeric truncate argument -- %s\n", argv[1]); |
774 |
return 0; |
775 |
} |
776 |
|
777 |
ret = bdrv_truncate(bs, offset); |
778 |
if (ret < 0) { |
779 |
printf("truncate: %s", strerror(ret));
|
780 |
return 0; |
781 |
} |
782 |
|
783 |
return 0; |
784 |
} |
785 |
|
786 |
static const cmdinfo_t truncate_cmd = { |
787 |
.name = "truncate",
|
788 |
.altname = "t",
|
789 |
.cfunc = truncate_f, |
790 |
.argmin = 1,
|
791 |
.argmax = 1,
|
792 |
.args = "off",
|
793 |
.oneline = "truncates the current file at the given offset",
|
794 |
}; |
795 |
|
796 |
static int |
797 |
length_f(int argc, char **argv) |
798 |
{ |
799 |
int64_t size; |
800 |
char s1[64]; |
801 |
|
802 |
size = bdrv_getlength(bs); |
803 |
if (size < 0) { |
804 |
printf("getlength: %s", strerror(size));
|
805 |
return 0; |
806 |
} |
807 |
|
808 |
cvtstr(size, s1, sizeof(s1));
|
809 |
printf("%s\n", s1);
|
810 |
return 0; |
811 |
} |
812 |
|
813 |
|
814 |
static const cmdinfo_t length_cmd = { |
815 |
.name = "length",
|
816 |
.altname = "l",
|
817 |
.cfunc = length_f, |
818 |
.oneline = "gets the length of the current file",
|
819 |
}; |
820 |
|
821 |
|
822 |
static int |
823 |
info_f(int argc, char **argv) |
824 |
{ |
825 |
BlockDriverInfo bdi; |
826 |
char s1[64], s2[64]; |
827 |
int ret;
|
828 |
|
829 |
if (bs->drv && bs->drv->format_name)
|
830 |
printf("format name: %s\n", bs->drv->format_name);
|
831 |
if (bs->drv && bs->drv->protocol_name)
|
832 |
printf("format name: %s\n", bs->drv->protocol_name);
|
833 |
|
834 |
ret = bdrv_get_info(bs, &bdi); |
835 |
if (ret)
|
836 |
return 0; |
837 |
|
838 |
cvtstr(bdi.cluster_size, s1, sizeof(s1));
|
839 |
cvtstr(bdi.vm_state_offset, s2, sizeof(s2));
|
840 |
|
841 |
printf("cluster size: %s\n", s1);
|
842 |
printf("vm state offset: %s\n", s2);
|
843 |
|
844 |
return 0; |
845 |
} |
846 |
|
847 |
|
848 |
|
849 |
static const cmdinfo_t info_cmd = { |
850 |
.name = "info",
|
851 |
.altname = "i",
|
852 |
.cfunc = info_f, |
853 |
.oneline = "prints information about the current file",
|
854 |
}; |
855 |
|
856 |
static int |
857 |
alloc_f(int argc, char **argv) |
858 |
{ |
859 |
int64_t offset; |
860 |
int nb_sectors;
|
861 |
char s1[64]; |
862 |
int num;
|
863 |
int ret;
|
864 |
const char *retstr; |
865 |
|
866 |
offset = cvtnum(argv[1]);
|
867 |
if (offset & 0x1ff) { |
868 |
printf("offset %lld is not sector aligned\n",
|
869 |
(long long)offset); |
870 |
return 0; |
871 |
} |
872 |
|
873 |
if (argc == 3) |
874 |
nb_sectors = cvtnum(argv[2]);
|
875 |
else
|
876 |
nb_sectors = 1;
|
877 |
|
878 |
ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num);
|
879 |
|
880 |
cvtstr(offset, s1, sizeof(s1));
|
881 |
|
882 |
retstr = ret ? "allocated" : "not allocated"; |
883 |
if (nb_sectors == 1) |
884 |
printf("sector %s at offset %s\n", retstr, s1);
|
885 |
else
|
886 |
printf("%d/%d sectors %s at offset %s\n",
|
887 |
num, nb_sectors, retstr, s1); |
888 |
return 0; |
889 |
} |
890 |
|
891 |
static const cmdinfo_t alloc_cmd = { |
892 |
.name = "alloc",
|
893 |
.altname = "a",
|
894 |
.argmin = 1,
|
895 |
.argmax = 2,
|
896 |
.cfunc = alloc_f, |
897 |
.args = "off [sectors]",
|
898 |
.oneline = "checks if a sector is present in the file",
|
899 |
}; |
900 |
|
901 |
static int |
902 |
close_f(int argc, char **argv) |
903 |
{ |
904 |
bdrv_close(bs); |
905 |
bs = NULL;
|
906 |
return 0; |
907 |
} |
908 |
|
909 |
static const cmdinfo_t close_cmd = { |
910 |
.name = "close",
|
911 |
.altname = "c",
|
912 |
.cfunc = close_f, |
913 |
.oneline = "close the current open file",
|
914 |
}; |
915 |
|
916 |
static int openfile(char *name, int flags) |
917 |
{ |
918 |
if (bs) {
|
919 |
fprintf(stderr, "file open already, try 'help close'\n");
|
920 |
return 1; |
921 |
} |
922 |
|
923 |
bs = bdrv_new("hda");
|
924 |
if (!bs)
|
925 |
return 1; |
926 |
|
927 |
if (bdrv_open(bs, name, flags) == -1) { |
928 |
fprintf(stderr, "%s: can't open device %s\n", progname, name);
|
929 |
bs = NULL;
|
930 |
return 1; |
931 |
} |
932 |
|
933 |
return 0; |
934 |
} |
935 |
|
936 |
static void |
937 |
open_help(void)
|
938 |
{ |
939 |
printf( |
940 |
"\n"
|
941 |
" opens a new file in the requested mode\n"
|
942 |
"\n"
|
943 |
" Example:\n"
|
944 |
" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n"
|
945 |
"\n"
|
946 |
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
|
947 |
" -C, -- create new file if it doesn't exist\n"
|
948 |
" -r, -- open file read-only\n"
|
949 |
" -s, -- use snapshot file\n"
|
950 |
" -n, -- disable host cache\n"
|
951 |
"\n");
|
952 |
} |
953 |
|
954 |
static const cmdinfo_t open_cmd; |
955 |
|
956 |
static int |
957 |
open_f(int argc, char **argv) |
958 |
{ |
959 |
int flags = 0; |
960 |
int readonly = 0; |
961 |
int c;
|
962 |
|
963 |
while ((c = getopt(argc, argv, "snCr")) != EOF) { |
964 |
switch (c) {
|
965 |
case 's': |
966 |
flags |= BDRV_O_SNAPSHOT; |
967 |
break;
|
968 |
case 'n': |
969 |
flags |= BDRV_O_NOCACHE; |
970 |
break;
|
971 |
case 'C': |
972 |
flags |= BDRV_O_CREAT; |
973 |
break;
|
974 |
case 'r': |
975 |
readonly = 1;
|
976 |
break;
|
977 |
default:
|
978 |
return command_usage(&open_cmd);
|
979 |
} |
980 |
} |
981 |
|
982 |
if (readonly)
|
983 |
flags |= BDRV_O_RDONLY; |
984 |
else
|
985 |
flags |= BDRV_O_RDWR; |
986 |
|
987 |
if (optind != argc - 1) |
988 |
return command_usage(&open_cmd);
|
989 |
|
990 |
return openfile(argv[optind], flags);
|
991 |
} |
992 |
|
993 |
static const cmdinfo_t open_cmd = { |
994 |
.name = "open",
|
995 |
.altname = "o",
|
996 |
.cfunc = open_f, |
997 |
.argmin = 1,
|
998 |
.argmax = -1,
|
999 |
.flags = CMD_NOFILE_OK, |
1000 |
.args = "[-Crsn] [path]",
|
1001 |
.oneline = "open the file specified by path",
|
1002 |
.help = open_help, |
1003 |
}; |
1004 |
|
1005 |
static int |
1006 |
init_args_command( |
1007 |
int index)
|
1008 |
{ |
1009 |
/* only one device allowed so far */
|
1010 |
if (index >= 1) |
1011 |
return 0; |
1012 |
return ++index;
|
1013 |
} |
1014 |
|
1015 |
static int |
1016 |
init_check_command( |
1017 |
const cmdinfo_t *ct)
|
1018 |
{ |
1019 |
if (ct->flags & CMD_FLAG_GLOBAL)
|
1020 |
return 1; |
1021 |
if (!(ct->flags & CMD_NOFILE_OK) && !bs) {
|
1022 |
fprintf(stderr, "no file open, try 'help open'\n");
|
1023 |
return 0; |
1024 |
} |
1025 |
return 1; |
1026 |
} |
1027 |
|
1028 |
static void usage(const char *name) |
1029 |
{ |
1030 |
printf( |
1031 |
"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n"
|
1032 |
"QEMU Disk excerciser\n"
|
1033 |
"\n"
|
1034 |
" -C, --create create new file if it doesn't exist\n"
|
1035 |
" -c, --cmd command to execute\n"
|
1036 |
" -r, --read-only export read-only\n"
|
1037 |
" -s, --snapshot use snapshot file\n"
|
1038 |
" -n, --nocache disable host cache\n"
|
1039 |
" -m, --misalign misalign allocations for O_DIRECT\n"
|
1040 |
" -h, --help display this help and exit\n"
|
1041 |
" -V, --version output version information and exit\n"
|
1042 |
"\n",
|
1043 |
name); |
1044 |
} |
1045 |
|
1046 |
|
1047 |
int main(int argc, char **argv) |
1048 |
{ |
1049 |
int readonly = 0; |
1050 |
const char *sopt = "hVc:Crsnm"; |
1051 |
struct option lopt[] = {
|
1052 |
{ "help", 0, 0, 'h' }, |
1053 |
{ "version", 0, 0, 'V' }, |
1054 |
{ "offset", 1, 0, 'o' }, |
1055 |
{ "cmd", 1, 0, 'c' }, |
1056 |
{ "create", 0, 0, 'C' }, |
1057 |
{ "read-only", 0, 0, 'r' }, |
1058 |
{ "snapshot", 0, 0, 's' }, |
1059 |
{ "nocache", 0, 0, 'n' }, |
1060 |
{ "misalign", 0, 0, 'm' }, |
1061 |
{ NULL, 0, 0, 0 } |
1062 |
}; |
1063 |
int c;
|
1064 |
int opt_index = 0; |
1065 |
int flags = 0; |
1066 |
|
1067 |
progname = basename(argv[0]);
|
1068 |
|
1069 |
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { |
1070 |
switch (c) {
|
1071 |
case 's': |
1072 |
flags |= BDRV_O_SNAPSHOT; |
1073 |
break;
|
1074 |
case 'n': |
1075 |
flags |= BDRV_O_NOCACHE; |
1076 |
break;
|
1077 |
case 'c': |
1078 |
add_user_command(optarg); |
1079 |
break;
|
1080 |
case 'C': |
1081 |
flags |= BDRV_O_CREAT; |
1082 |
break;
|
1083 |
case 'r': |
1084 |
readonly = 1;
|
1085 |
break;
|
1086 |
case 'm': |
1087 |
misalign = 1;
|
1088 |
break;
|
1089 |
case 'V': |
1090 |
printf("%s version %s\n", progname, VERSION);
|
1091 |
exit(0);
|
1092 |
case 'h': |
1093 |
usage(progname); |
1094 |
exit(0);
|
1095 |
default:
|
1096 |
usage(progname); |
1097 |
exit(1);
|
1098 |
} |
1099 |
} |
1100 |
|
1101 |
if ((argc - optind) > 1) { |
1102 |
usage(progname); |
1103 |
exit(1);
|
1104 |
} |
1105 |
|
1106 |
bdrv_init(); |
1107 |
|
1108 |
/* initialize commands */
|
1109 |
quit_init(); |
1110 |
help_init(); |
1111 |
add_command(&open_cmd); |
1112 |
add_command(&close_cmd); |
1113 |
add_command(&read_cmd); |
1114 |
add_command(&readv_cmd); |
1115 |
add_command(&write_cmd); |
1116 |
add_command(&writev_cmd); |
1117 |
add_command(&flush_cmd); |
1118 |
add_command(&truncate_cmd); |
1119 |
add_command(&length_cmd); |
1120 |
add_command(&info_cmd); |
1121 |
add_command(&alloc_cmd); |
1122 |
|
1123 |
add_args_command(init_args_command); |
1124 |
add_check_command(init_check_command); |
1125 |
|
1126 |
/* open the device */
|
1127 |
if (readonly)
|
1128 |
flags |= BDRV_O_RDONLY; |
1129 |
else
|
1130 |
flags |= BDRV_O_RDWR; |
1131 |
|
1132 |
if ((argc - optind) == 1) |
1133 |
openfile(argv[optind], flags); |
1134 |
command_loop(); |
1135 |
|
1136 |
if (bs)
|
1137 |
bdrv_close(bs); |
1138 |
return 0; |
1139 |
} |