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/* Copyright (c) 2008, XenSource Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of XenSource Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "libvhd.h"
int
vhd_util_query(int argc, char **argv)
{
char *name;
vhd_context_t vhd;
off_t currsize;
int ret, err, c, size, physize, parent, fields, depth;
name = NULL;
size = 0;
physize = 0;
parent = 0;
fields = 0;
depth = 0;
if (!argc || !argv) {
err = -EINVAL;
goto usage;
}
optind = 0;
while ((c = getopt(argc, argv, "n:vspfdh")) != -1) {
switch (c) {
case 'n':
name = optarg;
break;
case 'v':
size = 1;
break;
case 's':
physize = 1;
break;
case 'p':
parent = 1;
break;
case 'f':
fields = 1;
break;
case 'd':
depth = 1;
break;
case 'h':
err = 0;
goto usage;
default:
err = -EINVAL;
goto usage;
}
}
if (!name || optind != argc) {
err = -EINVAL;
goto usage;
}
err = vhd_open(&vhd, name, VHD_OPEN_RDONLY | VHD_OPEN_IGNORE_DISABLED);
if (err) {
printf("error opening %s: %d\n", name, err);
return err;
}
if (size)
printf("%"PRIu64"\n", vhd.footer.curr_size >> 20);
if (physize) {
err = vhd_get_phys_size(&vhd, &currsize);
if (err)
printf("failed to get physical size: %d\n", err);
else
printf("%"PRIu64"\n", currsize);
}
if (parent) {
ret = 0;
if (vhd.footer.type != HD_TYPE_DIFF)
printf("%s has no parent\n", name);
else {
char *pname;
ret = vhd_parent_locator_get(&vhd, &pname);
if (ret)
printf("query failed\n");
else {
printf("%s\n", pname);
free(pname);
}
}
err = (err ? : ret);
}
if (fields) {
int hidden;
ret = vhd_hidden(&vhd, &hidden);
if (ret)
printf("error checking 'hidden' field: %d\n", ret);
else
printf("hidden: %d\n", hidden);
err = (err ? : ret);
}
if (depth) {
int length;
ret = vhd_chain_depth(&vhd, &length);
if (ret)
printf("error checking chain depth: %d\n", ret);
else
printf("chain depth: %d\n", length);
err = (err ? : ret);
}
vhd_close(&vhd);
return err;
usage:
printf("options: <-n name> [-v print virtual size (in MB)] "
"[-s print physical utilization (bytes)] [-p print parent] "
"[-f print fields] [-d print chain depth] [-h help]\n");
return err;
}
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