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- /*
- * Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
- *
- * This file is part of the device-mapper userspace tools.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- /*
- * Note that this file is released only as part of a technology preview
- * and its contents may change in future updates in ways that do not
- * preserve compatibility.
- */
-
- #ifndef LIB_DMEVENT_H
- #define LIB_DMEVENT_H
-
- #include <stdint.h>
-
- /*
- * Event library interface.
- */
-
- enum dm_event_mask {
- DM_EVENT_SETTINGS_MASK = 0x0000FF,
- DM_EVENT_SINGLE = 0x000001, /* Report multiple errors just once. */
- DM_EVENT_MULTI = 0x000002, /* Report all of them. */
-
- DM_EVENT_ERROR_MASK = 0x00FF00,
- DM_EVENT_SECTOR_ERROR = 0x000100, /* Failure on a particular sector. */
- DM_EVENT_DEVICE_ERROR = 0x000200, /* Device failure. */
- DM_EVENT_PATH_ERROR = 0x000400, /* Failure on an io path. */
- DM_EVENT_ADAPTOR_ERROR = 0x000800, /* Failure of a host adaptor. */
-
- DM_EVENT_STATUS_MASK = 0xFF0000,
- DM_EVENT_SYNC_STATUS = 0x010000, /* Mirror synchronization completed/failed. */
- DM_EVENT_TIMEOUT = 0x020000, /* Timeout has occured */
-
- DM_EVENT_REGISTRATION_PENDING = 0x1000000, /* Monitor thread is setting-up/shutting-down */
- };
-
- #define DM_EVENT_ALL_ERRORS DM_EVENT_ERROR_MASK
-
- struct dm_event_handler;
-
- struct dm_event_handler *dm_event_handler_create(void);
- void dm_event_handler_destroy(struct dm_event_handler *dmevh);
-
- /*
- * Path of shared library to handle events.
- *
- * All of dso, device_name and uuid strings are duplicated, you do not
- * need to keep the pointers valid after the call succeeds. Thes may
- * return -ENOMEM though.
- */
- int dm_event_handler_set_dso(struct dm_event_handler *dmevh, const char *path);
-
- /*
- * Identify the device to monitor by exactly one of device_name, uuid or
- * device number. String arguments are duplicated, see above.
- */
- int dm_event_handler_set_dev_name(struct dm_event_handler *dmevh, const char *device_name);
-
- int dm_event_handler_set_uuid(struct dm_event_handler *dmevh, const char *uuid);
-
- void dm_event_handler_set_major(struct dm_event_handler *dmevh, int major);
- void dm_event_handler_set_minor(struct dm_event_handler *dmevh, int minor);
- void dm_event_handler_set_timeout(struct dm_event_handler *dmevh, int timeout);
-
- /*
- * Specify mask for events to monitor.
- */
- void dm_event_handler_set_event_mask(struct dm_event_handler *dmevh,
- enum dm_event_mask evmask);
-
- const char *dm_event_handler_get_dso(const struct dm_event_handler *dmevh);
- const char *dm_event_handler_get_dev_name(const struct dm_event_handler *dmevh);
- const char *dm_event_handler_get_uuid(const struct dm_event_handler *dmevh);
- int dm_event_handler_get_major(const struct dm_event_handler *dmevh);
- int dm_event_handler_get_minor(const struct dm_event_handler *dmevh);
- int dm_event_handler_get_timeout(const struct dm_event_handler *dmevh);
- enum dm_event_mask dm_event_handler_get_event_mask(const struct dm_event_handler *dmevh);
-
- /* FIXME Review interface (what about this next thing?) */
- int dm_event_get_registered_device(struct dm_event_handler *dmevh, int next);
-
- /*
- * Initiate monitoring using dmeventd.
- */
- int dm_event_register_handler(const struct dm_event_handler *dmevh);
- int dm_event_unregister_handler(const struct dm_event_handler *dmevh);
-
- /* Prototypes for DSO interface, see dmeventd.c, struct dso_data for
- detailed descriptions. */
- void process_event(struct dm_task *dmt, enum dm_event_mask evmask, void **user);
- int register_device(const char *device_name, const char *uuid, int major, int minor, void **user);
- int unregister_device(const char *device_name, const char *uuid, int major,
- int minor, void **user);
-
- #endif
-