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use references to srcmounts rather than copies

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This commit is contained in:
Antonio SJ Musumeci 2016-01-29 16:54:39 -05:00
parent f7c37d2974
commit 6086620e23
49 changed files with 1050 additions and 717 deletions
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93
src/mkdir.cpp
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@ -37,49 +37,80 @@ using namespace mergerfs;
static
int
_mkdir(Policy::Func::Search searchFunc,
Policy::Func::Create createFunc,
const vector<string> &srcmounts,
const size_t minfreespace,
const string &fusepath,
const mode_t mode)
_mkdir_loop_core(const string &existingpath,
const string &createpath,
const char *fusepath,
const char *fusedirpath,
const mode_t mode,
const int error)
{
int rv;
string fullpath;
if(createpath != existingpath)
{
const ugid::SetRootGuard ugidGuard;
fs::clonepath(existingpath,createpath,fusedirpath);
}
fs::path::make(&createpath,fusepath,fullpath);
rv = ::mkdir(fullpath.c_str(),mode);
return calc_error(rv,error,errno);
}
static
int
_mkdir_loop(const string &existingpath,
const vector<const string*> &createpaths,
const char *fusepath,
const char *fusedirpath,
const mode_t mode)
{
int error;
string dirname;
string existingpath;
vector<string> createpaths;
dirname = fs::path::dirname(fusepath);
rv = searchFunc(srcmounts,dirname,minfreespace,existingpath);
if(rv == -1)
return -errno;
rv = createFunc(srcmounts,dirname,minfreespace,createpaths);
if(rv == -1)
return -errno;
error = -1;
for(size_t i = 0, ei = createpaths.size(); i != ei; i++)
{
string &createpath = createpaths[i];
if(createpath != existingpath)
{
const ugid::SetRootGuard ugidGuard;
fs::clonepath(existingpath,createpath,dirname);
}
fs::path::append(createpath,fusepath);
rv = ::mkdir(createpath.c_str(),mode);
error = calc_error(rv,error,errno);
error = _mkdir_loop_core(existingpath,*createpaths[i],
fusepath,fusedirpath,mode,error);
}
return -error;
}
static
int
_mkdir(Policy::Func::Search searchFunc,
Policy::Func::Create createFunc,
const vector<string> &srcmounts,
const size_t minfreespace,
const char *fusepath,
const mode_t mode)
{
int rv;
string fusedirpath;
const char *fusedirpathcstr;
vector<const string*> createpaths;
vector<const string*> existingpaths;
fusedirpath = fusepath;
fs::path::dirname(fusedirpath);
fusedirpathcstr = fusedirpath.c_str();
rv = searchFunc(srcmounts,fusedirpathcstr,minfreespace,existingpaths);
if(rv == -1)
return -errno;
rv = createFunc(srcmounts,fusedirpathcstr,minfreespace,createpaths);
if(rv == -1)
return -errno;
return _mkdir_loop(*existingpaths[0],createpaths,
fusepath,fusedirpathcstr,mode);
}
namespace mergerfs
{
namespace fuse