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98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/*
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* Copyright (C) 2005 Red Hat, Inc. All rights reserved.
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*
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* This file is part of the device-mapper userspace tools.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Note that this file is released only as part of a technology preview
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* and its contents may change in future updates in ways that do not
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* preserve compatibility.
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*/
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#ifndef LIB_DMEVENT_H
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#define LIB_DMEVENT_H
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#include <stdint.h>
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/* Event type definitions. */
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enum dm_event_type {
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DM_EVENT_SETTINGS_MASK = 0x0000FF,
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DM_EVENT_SINGLE = 0x000001, /* Report multiple errors just once. */
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DM_EVENT_MULTI = 0x000002, /* Report all of them. */
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DM_EVENT_ERROR_MASK = 0x00FF00,
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DM_EVENT_SECTOR_ERROR = 0x000100, /* Failure on a particular sector. */
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DM_EVENT_DEVICE_ERROR = 0x000200, /* Device failure. */
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DM_EVENT_PATH_ERROR = 0x000400, /* Failure on an io path. */
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DM_EVENT_ADAPTOR_ERROR = 0x000800, /* Failure off a host adaptor. */
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DM_EVENT_STATUS_MASK = 0xFF0000,
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DM_EVENT_SYNC_STATUS = 0x010000, /* Mirror synchronization completed/failed. */
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DM_EVENT_TIMEOUT = 0x020000, /* Timeout has occured */
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DM_EVENT_REGISTRATION_PENDING = 0x1000000, /* Monitor thread is setting-up/shutting-down */
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};
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#define DM_EVENT_ALL_ERRORS DM_EVENT_ERROR_MASK
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/* Prototypes for event lib interface. */
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struct dm_event_handler;
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/* Create and destroy dm_event_handler struct, which is passed to
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register/unregister functions below */
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struct dm_event_handler *dm_event_handler_create(void);
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void dm_event_handler_destroy(struct dm_event_handler *h);
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/* Set parameters of a handler:
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- dso - shared library path to handle the events
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(only one of the following three needs to be set)
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- name - device name or path
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- uuid - device uuid
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- major and minor - device major/minor numbers
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- events - a bitfield defining which events to handle (see
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enum dm_event_type above)
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*/
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void dm_event_handler_set_dso(struct dm_event_handler *h, const char *path);
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void dm_event_handler_set_name(struct dm_event_handler *h, const char *name);
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void dm_event_handler_set_uuid(struct dm_event_handler *h, const char *uuid);
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void dm_event_handler_set_major(struct dm_event_handler *h, int major);
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void dm_event_handler_set_minor(struct dm_event_handler *h, int minor);
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void dm_event_handler_set_events(struct dm_event_handler *h,
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enum dm_event_type event);
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/* Get parameters of a handler, same as above */
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const char *dm_event_handler_get_dso(const struct dm_event_handler *h);
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const char *dm_event_handler_get_name(const struct dm_event_handler *h);
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const char *dm_event_handler_get_uuid(const struct dm_event_handler *h);
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int dm_event_handler_get_major(const struct dm_event_handler *h);
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int dm_event_handler_get_minor(const struct dm_event_handler *h);
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enum dm_event_type dm_event_handler_get_events(const struct dm_event_handler *h);
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/* FIXME */
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int dm_event_get_registered_device(char **dso_name, char **device_path,
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enum dm_event_type *events, int next);
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/* Call out to dmeventd to register or unregister a handler. If
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dmeventd is not running, it is spawned first. */
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int dm_event_register(const struct dm_event_handler *h);
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int dm_event_unregister(const struct dm_event_handler *h);
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/* Prototypes for DSO interface, see dmeventd.c, struct dso_data for
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detailed descriptions. */
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void process_event(struct dm_task *dmt, enum dm_event_type event);
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int register_device(const char *device, const char *uuid, int major, int minor);
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int unregister_device(const char *device, const char *uuid, int major,
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int minor);
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#endif
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