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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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72
src/create.cpp
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@ -38,39 +38,26 @@ using namespace mergerfs;
static
int
_create(Policy::Func::Search searchFunc,
Policy::Func::Create createFunc,
const vector<string> &srcmounts,
const size_t minfreespace,
const string &fusepath,
const mode_t mode,
const int flags,
uint64_t &fh)
_create_core(const string &existingpath,
const string &createpath,
const char *fusepath,
const char *fusedirpath,
const mode_t mode,
const int flags,
uint64_t &fh)
{
int fd;
int rv;
string dirname;
vector<string> createpath;
vector<string> existingpath;
string fullpath;
dirname = fs::path::dirname(fusepath);
rv = searchFunc(srcmounts,dirname,minfreespace,existingpath);
if(rv == -1)
return -errno;
rv = createFunc(srcmounts,dirname,minfreespace,createpath);
if(rv == -1)
return -errno;
if(createpath[0] != existingpath[0])
if(createpath != existingpath)
{
const ugid::SetRootGuard ugidGuard;
fs::clonepath(existingpath[0],createpath[0],dirname);
fs::clonepath(existingpath,createpath,fusedirpath);
}
fs::path::append(createpath[0],fusepath);
fs::path::make(&createpath,fusepath,fullpath);
fd = ::open(createpath[0].c_str(),flags,mode);
fd = ::open(fullpath.c_str(),flags,mode);
if(fd == -1)
return -errno;
@ -79,6 +66,41 @@ _create(Policy::Func::Search searchFunc,
return 0;
}
static
int
_create(Policy::Func::Search searchFunc,
Policy::Func::Create createFunc,
const vector<string> &srcmounts,
const size_t minfreespace,
const char *fusepath,
const mode_t mode,
const int flags,
uint64_t &fh)
{
int rv;
string fullpath;
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 _create_core(*existingpaths[0],*createpaths[0],
fusepath,fusedirpathcstr,
mode,flags,fh);
}
namespace mergerfs
{
namespace fuse