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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.)
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LVM_DEV_CACHE_H
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#define _LVM_DEV_CACHE_H
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#include "lib/device/device.h"
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#include "lib/misc/lvm-wrappers.h"
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struct cmd_context;
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/*
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* predicate for devices.
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*/
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struct dev_filter {
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int (*passes_filter) (struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name);
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void (*destroy) (struct dev_filter *f);
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void (*wipe) (struct dev_filter *f);
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void *private;
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unsigned use_count;
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const char *name;
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};
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int dev_cache_index_devs(void);
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struct dm_list *dev_cache_get_dev_list_for_vgid(const char *vgid);
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struct dm_list *dev_cache_get_dev_list_for_lvid(const char *lvid);
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/*
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* The global device cache.
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*/
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int dev_cache_init(struct cmd_context *cmd);
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int dev_cache_exit(void);
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/*
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* Returns number of open devices.
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*/
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int dev_cache_check_for_open_devices(void);
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void dev_cache_scan(void);
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int dev_cache_has_scanned(void);
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int dev_cache_add_dir(const char *path);
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struct device *dev_cache_get(struct cmd_context *cmd, const char *name, struct dev_filter *f);
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const char *dev_cache_filtered_reason(const char *name);
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// TODO
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struct device *dev_cache_get_by_devt(struct cmd_context *cmd, dev_t device, struct dev_filter *f);
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void dev_set_preferred_name(struct dm_str_list *sl, struct device *dev);
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/*
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* Object for iterating through the cache.
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*/
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struct dev_iter;
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struct dev_iter *dev_iter_create(struct dev_filter *f, int unused);
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void dev_iter_destroy(struct dev_iter *iter);
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struct device *dev_iter_get(struct cmd_context *cmd, struct dev_iter *iter);
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void dev_reset_error_count(struct cmd_context *cmd);
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void dev_cache_failed_path(struct device *dev, const char *path);
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#endif
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