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/* virt-df
* Copyright (C) 2010-2012 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <inttypes.h>
#include <unistd.h>
#include <errno.h>
#include "guestfs.h"
#include "structs-cleanups.h"
#include "options.h"
#include "domains.h"
#include "virt-df.h"
/* Since we want this function to be robust against very bad failure
* cases (hello, https://bugzilla.kernel.org/show_bug.cgi?id=18792) it
* won't exit on guestfs failures.
*/
int
df_on_handle (guestfs_h *g, const char *name, const char *uuid, FILE *fp)
{
size_t i;
CLEANUP_FREE_STRING_LIST char **devices = NULL;
CLEANUP_FREE_STRING_LIST char **fses = NULL;
if (verbose)
fprintf (stderr, "df_on_handle: %s\n", name);
devices = guestfs_list_devices (g);
if (devices == NULL)
return -1;
fses = guestfs_list_filesystems (g);
if (fses == NULL)
return -1;
for (i = 0; fses[i] != NULL; i += 2) {
if (STRNEQ (fses[i+1], "") &&
STRNEQ (fses[i+1], "swap") &&
STRNEQ (fses[i+1], "unknown")) {
const char *dev = fses[i];
CLEANUP_FREE_STATVFS struct guestfs_statvfs *stat = NULL;
if (verbose)
fprintf (stderr, "df_on_handle: %s dev %s\n", name, dev);
/* Try mounting and stating the device. This might reasonably
* fail, so don't show errors.
*/
guestfs_push_error_handler (g, NULL, NULL);
if (guestfs_mount_ro (g, dev, "/") == 0) {
stat = guestfs_statvfs (g, "/");
guestfs_umount_all (g);
}
guestfs_pop_error_handler (g);
if (stat)
print_stat (fp, name, uuid, dev, stat);
}
}
return 0;
}
#if defined(HAVE_LIBVIRT)
#include <libvirt/libvirt.h>
/* The multi-threaded version. This callback is called from the code
* in "parallel.c".
*/
int
df_work (guestfs_h *g, size_t i, FILE *fp)
{
struct guestfs_add_libvirt_dom_argv optargs;
optargs.bitmask =
GUESTFS_ADD_LIBVIRT_DOM_READONLY_BITMASK |
GUESTFS_ADD_LIBVIRT_DOM_READONLYDISK_BITMASK;
optargs.readonly = 1;
optargs.readonlydisk = "read";
/* Traditionally we have ignored errors from adding disks in virt-df. */
if (guestfs_add_libvirt_dom_argv (g, domains[i].dom, &optargs) == -1)
return 0;
if (guestfs_launch (g) == -1)
return -1;
return df_on_handle (g, domains[i].name, domains[i].uuid, fp);
}
#endif /* HAVE_LIBVIRT */
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