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In many files there are header comments that contain an Author: statement, supposedly reflecting who originally wrote the code. In a large collaborative project like libvirt, any non-trivial file will have been modified by a large number of different contributors. IOW, the Author: comments are quickly out of date, omitting people who have made significant contribitions. In some places Author: lines have been added despite the person merely being responsible for creating the file by moving existing code out of another file. IOW, the Author: lines give an incorrect record of authorship. With this all in mind, the comments are useless as a means to identify who to talk to about code in a particular file. Contributors will always be better off using 'git log' and 'git blame' if they need to find the author of a particular bit of code. This commit thus deletes all Author: comments from the source and adds a rule to prevent them reappearing. The Copyright headers are similarly misleading and inaccurate, however, we cannot delete these as they have legal meaning, despite being largely inaccurate. In addition only the copyright holder is permitted to change their respective copyright statement. Reviewed-by: Erik Skultety <eskultet@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
190 lines
5.4 KiB
C
190 lines
5.4 KiB
C
/*
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* storage_backend.c: internal storage driver backend contract
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*
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* Copyright (C) 2007-2016 Red Hat, Inc.
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* Copyright (C) 2007-2008 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <sys/stat.h>
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#include "datatypes.h"
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#include "virerror.h"
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#include "viralloc.h"
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#include "internal.h"
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#include "virstoragefile.h"
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#include "storage_backend.h"
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#include "virlog.h"
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#include "virmodule.h"
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#include "virfile.h"
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#include "configmake.h"
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#if WITH_STORAGE_LVM
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# include "storage_backend_logical.h"
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#endif
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#if WITH_STORAGE_ISCSI
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# include "storage_backend_iscsi.h"
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#endif
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#if WITH_STORAGE_ISCSI_DIRECT
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# include "storage_backend_iscsi_direct.h"
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#endif
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#if WITH_STORAGE_SCSI
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# include "storage_backend_scsi.h"
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#endif
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#if WITH_STORAGE_MPATH
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# include "storage_backend_mpath.h"
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#endif
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#if WITH_STORAGE_DISK
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# include "storage_backend_disk.h"
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#endif
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#if WITH_STORAGE_DIR
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# include "storage_backend_fs.h"
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#endif
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#if WITH_STORAGE_RBD
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# include "storage_backend_rbd.h"
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#endif
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#if WITH_STORAGE_SHEEPDOG
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# include "storage_backend_sheepdog.h"
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#endif
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#if WITH_STORAGE_GLUSTER
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# include "storage_backend_gluster.h"
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#endif
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#if WITH_STORAGE_ZFS
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# include "storage_backend_zfs.h"
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#endif
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#if WITH_STORAGE_VSTORAGE
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# include "storage_backend_vstorage.h"
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#endif
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#define VIR_FROM_THIS VIR_FROM_STORAGE
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VIR_LOG_INIT("storage.storage_backend");
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#define VIR_STORAGE_BACKENDS_MAX 20
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static virStorageBackendPtr virStorageBackends[VIR_STORAGE_BACKENDS_MAX];
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static size_t virStorageBackendsCount;
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#define STORAGE_BACKEND_MODULE_DIR LIBDIR "/libvirt/storage-backend"
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static int
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virStorageDriverLoadBackendModule(const char *name,
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const char *regfunc,
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bool forceload)
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{
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char *modfile = NULL;
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int ret;
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if (!(modfile = virFileFindResourceFull(name,
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"libvirt_storage_backend_",
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".so",
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abs_topbuilddir "/src/.libs",
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STORAGE_BACKEND_MODULE_DIR,
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"LIBVIRT_STORAGE_BACKEND_DIR")))
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return -1;
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ret = virModuleLoad(modfile, regfunc, forceload);
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VIR_FREE(modfile);
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return ret;
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}
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#define VIR_STORAGE_BACKEND_REGISTER(func, module) \
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if (virStorageDriverLoadBackendModule(module, #func, allbackends) < 0) \
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return -1
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int
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virStorageBackendDriversRegister(bool allbackends ATTRIBUTE_UNUSED)
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{
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#if WITH_STORAGE_DIR || WITH_STORAGE_FS
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendFsRegister, "fs");
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#endif
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#if WITH_STORAGE_LVM
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendLogicalRegister, "logical");
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#endif
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#if WITH_STORAGE_ISCSI
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendISCSIRegister, "iscsi");
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#endif
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#if WITH_STORAGE_ISCSI_DIRECT
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendISCSIDirectRegister, "iscsi-direct");
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#endif
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#if WITH_STORAGE_SCSI
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendSCSIRegister, "scsi");
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#endif
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#if WITH_STORAGE_MPATH
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendMpathRegister, "mpath");
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#endif
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#if WITH_STORAGE_DISK
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendDiskRegister, "disk");
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#endif
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#if WITH_STORAGE_RBD
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendRBDRegister, "rbd");
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#endif
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#if WITH_STORAGE_SHEEPDOG
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendSheepdogRegister, "sheepdog");
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#endif
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#if WITH_STORAGE_GLUSTER
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendGlusterRegister, "gluster");
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#endif
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#if WITH_STORAGE_ZFS
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendZFSRegister, "zfs");
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#endif
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#if WITH_STORAGE_VSTORAGE
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VIR_STORAGE_BACKEND_REGISTER(virStorageBackendVstorageRegister, "vstorage");
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#endif
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return 0;
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}
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#undef VIR_STORAGE_BACKEND_REGISTER
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int
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virStorageBackendRegister(virStorageBackendPtr backend)
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{
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VIR_DEBUG("Registering storage backend '%s'",
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virStoragePoolTypeToString(backend->type));
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if (virStorageBackendsCount >= VIR_STORAGE_BACKENDS_MAX) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Too many drivers, cannot register storage backend '%s'"),
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virStoragePoolTypeToString(backend->type));
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return -1;
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}
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virStorageBackends[virStorageBackendsCount] = backend;
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virStorageBackendsCount++;
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return 0;
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}
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virStorageBackendPtr
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virStorageBackendForType(int type)
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{
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size_t i;
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for (i = 0; i < virStorageBackendsCount; i++)
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if (virStorageBackends[i]->type == type)
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return virStorageBackends[i];
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("missing backend for pool type %d (%s)"),
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type, NULLSTR(virStoragePoolTypeToString(type)));
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return NULL;
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}
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