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fill in an already created dm_task. This allows common code, such as minor number selection, and read_only to be lifted.
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
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* Copyright (C) 2002 Sistina Software (UK) Limited.
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*
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* This file is released under the LGPL.
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*/
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#ifndef _LVM_LL_ACTIVATE_H
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#define _LVM_LL_ACTIVATE_H
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#include "metadata.h"
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#include <libdevmapper.h>
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/*
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* Prepares a new dm_task.
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*/
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struct dm_task *setup_dm_task(const char *name, int task);
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/*
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* Query functions. 'name' is the device node name in the
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* device-mapper dir.
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*/
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int device_info(const char *name, struct dm_info *info);
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int device_active(const char *name);
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int device_suspended(const char *name);
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int device_open_count(const char *name);
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/*
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* Functions to manipulate an already active device.
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*/
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int device_deactivate(const char *name);
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int device_suspend(const char *name);
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int device_resume(const char *name);
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/*
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* The next three functions populate a dm_task with a suitable
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* set of targets.
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*/
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/*
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* Creates a device with a mapping table as specified by the lv.
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*/
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int device_populate_lv(struct dm_task *dmt, struct logical_volume *lv);
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/*
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* Layers the origin device above an already active 'real'
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* device.
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*/
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int device_populate_origin(struct dm_task *dmt, struct logical_volume *lv,
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const char *real);
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/*
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* Creates a snapshot device for a given origin and exception
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* storage area.
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*/
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int device_populate_snapshot(struct dm_task *dmt, struct logical_volume *lv,
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const char *origin, const char *cow_device);
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#endif
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