mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
6620dc9475
Save the list of PVs in /run/lvm/hints. These hints are used to reduce scanning in a number of commands to only the PVs on the system, or only the PVs in a requested VG (rather than all devices on the system.)
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2013 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser 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 "base/memory/zalloc.h"
|
|
#include "lib/misc/lib.h"
|
|
#include "lib/filters/filter.h"
|
|
#include "lib/device/device.h"
|
|
|
|
static int _and_p(struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name)
|
|
{
|
|
struct dev_filter **filters;
|
|
int ret;
|
|
|
|
for (filters = (struct dev_filter **) f->private; *filters; ++filters) {
|
|
if (use_filter_name && strcmp((*filters)->name, use_filter_name))
|
|
continue;
|
|
ret = (*filters)->passes_filter(cmd, *filters, dev, use_filter_name);
|
|
|
|
if (!ret)
|
|
return 0; /* No 'stack': a filter, not an error. */
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _and_p_with_dev_ext_info(struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name)
|
|
{
|
|
int r;
|
|
|
|
dev_ext_enable(dev, external_device_info_source());
|
|
r = _and_p(cmd, f, dev, use_filter_name);
|
|
dev_ext_disable(dev);
|
|
|
|
return r;
|
|
}
|
|
|
|
static void _composite_destroy(struct dev_filter *f)
|
|
{
|
|
struct dev_filter **filters;
|
|
|
|
if (f->use_count)
|
|
log_error(INTERNAL_ERROR "Destroying composite filter while in use %u times.", f->use_count);
|
|
|
|
for (filters = (struct dev_filter **) f->private; *filters; ++filters)
|
|
(*filters)->destroy(*filters);
|
|
|
|
free(f->private);
|
|
free(f);
|
|
}
|
|
|
|
static void _wipe(struct dev_filter *f)
|
|
{
|
|
struct dev_filter **filters;
|
|
|
|
for (filters = (struct dev_filter **) f->private; *filters; ++filters)
|
|
if ((*filters)->wipe)
|
|
(*filters)->wipe(*filters);
|
|
}
|
|
|
|
struct dev_filter *composite_filter_create(int n, int use_dev_ext_info, struct dev_filter **filters)
|
|
{
|
|
struct dev_filter **filters_copy, *cft;
|
|
|
|
if (!filters)
|
|
return_NULL;
|
|
|
|
if (!(filters_copy = malloc(sizeof(*filters) * (n + 1)))) {
|
|
log_error("Composite filters allocation failed.");
|
|
return NULL;
|
|
}
|
|
|
|
memcpy(filters_copy, filters, sizeof(*filters) * n);
|
|
filters_copy[n] = NULL;
|
|
|
|
if (!(cft = zalloc(sizeof(*cft)))) {
|
|
log_error("Composite filters allocation failed.");
|
|
free(filters_copy);
|
|
return NULL;
|
|
}
|
|
|
|
cft->passes_filter = use_dev_ext_info ? _and_p_with_dev_ext_info : _and_p;
|
|
cft->destroy = _composite_destroy;
|
|
cft->wipe = _wipe;
|
|
cft->use_count = 0;
|
|
cft->private = filters_copy;
|
|
cft->name = "composite";
|
|
|
|
log_debug_devs("Composite filter initialised.");
|
|
|
|
return cft;
|
|
}
|