mirror of
https://github.com/freebsd/freebsd-src
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143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
/*-
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* Copyright (c) 2011, 2012, 2013, 2014, 2016 Spectra Logic Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* Authors: Justin T. Gibbs (Spectra Logic Corporation)
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*/
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/**
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* \file dev_ctl_event.h
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*
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* \brief Class hierarchy used to express events received via
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* the devdctl API.
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*
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* Header requirements:
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* #include <string>
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* #include <list>
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* #include <map>
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*
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* #include <devdctl/guid.h>
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* #include <devdctl/event.h>
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*/
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#ifndef _ZFSD_EVENT_H_
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#define _ZFSD_EVENT_H_
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/*============================ Namespace Control =============================*/
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using std::string;
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/*=========================== Forward Declarations ===========================*/
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struct zpool_handle;
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typedef struct zpool_handle zpool_handle_t;
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struct nvlist;
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typedef struct nvlist nvlist_t;
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/*--------------------------------- ZfsEvent ---------------------------------*/
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class ZfsEvent : public DevdCtl::ZfsEvent
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{
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public:
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/** Specialized DevdCtlEvent object factory for ZFS events. */
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static BuildMethod Builder;
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virtual DevdCtl::Event *DeepCopy() const;
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/**
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* Interpret and perform any actions necessary to
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* consume the event.
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* \return True if this event should be queued for later reevaluation
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*/
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virtual bool Process() const;
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protected:
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/** DeepCopy Constructor. */
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ZfsEvent(const ZfsEvent &src);
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/** Constructor */
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ZfsEvent(Type, DevdCtl::NVPairMap &, const string &);
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/**
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* Detach any spares that are no longer needed, but were not
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* automatically detached by the kernel
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*/
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virtual void CleanupSpares() const;
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virtual void ProcessPoolEvent() const;
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static VdevCallback_t TryDetach;
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};
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class GeomEvent : public DevdCtl::GeomEvent
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{
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public:
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static BuildMethod Builder;
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virtual DevdCtl::Event *DeepCopy() const;
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virtual bool Process() const;
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protected:
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/** DeepCopy Constructor. */
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GeomEvent(const GeomEvent &src);
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/** Constructor */
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GeomEvent(Type, DevdCtl::NVPairMap &, const string &);
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/**
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* Attempt to match the ZFS labeled device at devPath with an active
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* CaseFile for a missing vdev. If a CaseFile is found, attempt
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* to re-integrate the device with its pool.
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*
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* \param devPath The devfs path to the potential leaf vdev.
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* \param physPath The physical path string reported by the device
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* at devPath.
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* \param devConfig The ZFS label information found on the device
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* at devPath.
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*
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* \return true if the event that caused the online action can
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* be considered consumed.
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*/
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static bool OnlineByLabel(const string &devPath,
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const string& physPath,
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nvlist_t *devConfig);
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/**
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* \brief Read and return label information for a device.
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*
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* \param devFd The device from which to read ZFS label information.
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* \param inUse The device is part of an active or potentially
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* active configuration.
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* \param degraded The device label indicates the vdev is not healthy.
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*
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* \return If label information is available, an nvlist describing
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* the vdev configuraiton found on the device specified by
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* devFd. Otherwise NULL.
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*/
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static nvlist_t *ReadLabel(int devFd, bool &inUse, bool °raded);
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};
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#endif /*_ZFSD_EVENT_H_ */
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