StoreFileSystem.cc

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/*
 * Copyright (C) 1996-2022 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
/* DEBUG: section 92    Storage File System */
 
#include "squid.h"
#include "StoreFileSystem.h"
 
std::vector<StoreFileSystem*> *StoreFileSystem::_FileSystems = NULL;
 
void
StoreFileSystem::RegisterAllFsWithCacheManager(void)
{
    for (iterator i = GetFileSystems().begin(); i != GetFileSystems().end(); ++i)
        (*i)->registerWithCacheManager();
}
 
void
StoreFileSystem::SetupAllFs()
{
    for (iterator i = GetFileSystems().begin(); i != GetFileSystems().end(); ++i)
        /* Call the FS to set up capabilities and initialize the FS driver */
        (*i)->setup();
}
 
void
StoreFileSystem::FsAdd(StoreFileSystem &instance)
{
    iterator i = GetFileSystems().begin();
 
    while (i != GetFileSystems().end()) {
        assert(strcmp((*i)->type(), instance.type()) != 0);
        ++i;
    }
 
    GetFileSystems().push_back (&instance);
}
 
std::vector<StoreFileSystem *> const &
StoreFileSystem::FileSystems()
{
    return GetFileSystems();
}
 
std::vector<StoreFileSystem*> &
StoreFileSystem::GetFileSystems()
{
    if (!_FileSystems)
        _FileSystems = new std::vector<StoreFileSystem *>;
 
    return *_FileSystems;
}
 
/*
 * called when a graceful shutdown is to occur
 * of each fs module.
 */
void
StoreFileSystem::FreeAllFs()
{
    while (!GetFileSystems().empty()) {
        StoreFileSystem *fs = GetFileSystems().back();
        GetFileSystems().pop_back();
        fs->done();
    }
}
 
StoreFileSystem *
StoreFileSystem::FindByType(const char *type)
{
    for (const auto fs: FileSystems()) {
        if (strcasecmp(type, fs->type()) == 0)
            return fs;
    }
    return nullptr;
}
 
/* no filesystem is required to export statistics */
void
StoreFileSystem::registerWithCacheManager(void)
{}