You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

105 lines
2.6 KiB

/*
Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <string>
#include <vector>
#include "errno.hpp"
#include "fs.hpp"
#include "fs_path.hpp"
#include "policy.hpp"
using std::string;
using std::vector;
static
int
_ff_create(const vector<string> &basepaths,
const uint64_t minfreespace,
vector<const string*> &paths)
{
const string *fallback;
fallback = NULL;
for(size_t i = 0, ei = basepaths.size(); i != ei; i++)
{
bool readonly;
uint64_t spaceavail;
uint64_t _spaceused;
const string *basepath = &basepaths[i];
if(!fs::info(*basepath,readonly,spaceavail,_spaceused))
continue;
if(readonly)
continue;
if(fallback == NULL)
fallback = basepath;
if(spaceavail < minfreespace)
continue;
paths.push_back(basepath);
return POLICY_SUCCESS;
}
if(fallback == NULL)
return POLICY_FAIL_ENOENT;
paths.push_back(fallback);
return POLICY_SUCCESS;
}
static
int
_ff_other(const vector<string> &basepaths,
const char *fusepath,
vector<const string*> &paths)
{
string fullpath;
for(size_t i = 0, ei = basepaths.size(); i != ei; i++)
{
const string *basepath = &basepaths[i];
fs::path::make(basepath,fusepath,fullpath);
if(!fs::exists(fullpath))
continue;
paths.push_back(basepath);
return POLICY_SUCCESS;
}
return POLICY_FAIL_ENOENT;
}
namespace mergerfs
{
int
Policy::Func::ff(const Category::Enum::Type type,
const vector<string> &basepaths,
const char *fusepath,
const uint64_t minfreespace,
vector<const string*> &paths)
{
if(type == Category::Enum::create)
return _ff_create(basepaths,minfreespace,paths);
return _ff_other(basepaths,fusepath,paths);
}
}