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/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2012 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
*/
#ifndef _LVM_DEV_MANAGER_H
#define _LVM_DEV_MANAGER_H
#include "lib/metadata/metadata-exported.h"
struct logical_volume;
struct lv_activate_opts;
struct volume_group;
struct cmd_context;
struct dev_manager;
struct dm_info;
struct device;
struct lv_seg_status;
int read_only_lv(const struct logical_volume *lv, const struct lv_activate_opts *laopts, const char *layer);
int get_crypt_table_offset(dev_t crypt_devt, uint32_t *offset_bytes);
/*
* Constructor and destructor.
*/
struct dev_manager *dev_manager_create(struct cmd_context *cmd,
const char *vg_name,
unsigned track_pvmove_deps);
void dev_manager_destroy(struct dev_manager *dm);
void dev_manager_release(void);
void dev_manager_exit(void);
/*
* The device handler is responsible for creating all the layered
* dm devices, and ensuring that all constraints are maintained
* (eg, an origin is created before its snapshot, but is not
* unsuspended until the snapshot is also created.)
*/
int dev_manager_info(struct cmd_context *cmd, const struct logical_volume *lv,
const char *layer,
int with_open_count, int with_read_ahead, int with_name_check,
struct dm_info *dminfo, uint32_t *read_ahead,
struct lv_seg_status *seg_status);
int dev_manager_snapshot_percent(struct dev_manager *dm,
const struct logical_volume *lv,
dm_percent_t *percent);
int dev_manager_mirror_percent(struct dev_manager *dm,
const struct logical_volume *lv, int wait,
dm_percent_t *percent, uint32_t *event_nr);
int dev_manager_raid_status(struct dev_manager *dm,
const struct logical_volume *lv,
struct lv_status_raid **status, int *exists);
int dev_manager_raid_message(struct dev_manager *dm,
const struct logical_volume *lv,
const char *msg);
int dev_manager_writecache_message(struct dev_manager *dm,
const struct logical_volume *lv,
const char *msg);
int dev_manager_cache_status(struct dev_manager *dm,
const struct logical_volume *lv,
struct lv_status_cache **status, int *exists);
int dev_manager_thin_status(struct dev_manager *dm,
const struct logical_volume *lv, int flush,
struct lv_status_thin **status, int *exists);
int dev_manager_thin_device_id(struct dev_manager *dm,
const struct logical_volume *lv,
uint32_t *device_id, int *exist);
int dev_manager_thin_pool_status(struct dev_manager *dm,
const struct logical_volume *lv, int flush,
struct lv_status_thin_pool **status, int *exists);
int dev_manager_vdo_pool_status(struct dev_manager *dm,
const struct logical_volume *lv, int flush,
struct lv_status_vdo **status, int *exists);
int dev_manager_suspend(struct dev_manager *dm, const struct logical_volume *lv,
struct lv_activate_opts *laopts, int lockfs, int flush_required);
int dev_manager_activate(struct dev_manager *dm, const struct logical_volume *lv,
struct lv_activate_opts *laopts);
int dev_manager_preload(struct dev_manager *dm, const struct logical_volume *lv,
struct lv_activate_opts *laopts, int *flush_required);
int dev_manager_deactivate(struct dev_manager *dm, const struct logical_volume *lv);
int dev_manager_transient(struct dev_manager *dm, const struct logical_volume *lv) __attribute__((nonnull(1, 2)));
int dev_manager_mknodes(const struct logical_volume *lv);
/*
* Put the desired changes into effect.
*/
int dev_manager_execute(struct dev_manager *dm);
int dev_manager_device_uses_vg(struct device *dev,
struct volume_group *vg);
int dev_manager_remove_dm_major_minor(uint32_t major, uint32_t minor);
int dev_manager_check_prefix_dm_major_minor(uint32_t major, uint32_t minor, const char *prefix);
int dev_manager_get_device_list(const char *prefix, struct dm_list **devs,
unsigned *devs_features);
#endif
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