mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
96158d42f5
This API already existed (as guestfs___add_libvirt_dom), and was used by a few tools. This commit changes it to a public API. Note that for reasons outlined in the previous commit message, it is impossible to call this from guestfish or from non-C language bindings.
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* 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 "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 */
|