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set direct_io per open/create, now runtime configurable

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This commit is contained in:
Antonio SJ Musumeci 2019-01-09 00:01:52 -05:00
parent c36bc5320d
commit 87b2795f2b
12 changed files with 336 additions and 334 deletions
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92
src/open.cpp
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@ -14,8 +14,6 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <fuse.h>
#include "config.hpp"
#include "errno.hpp"
#include "fileinfo.hpp"
@ -25,58 +23,63 @@
#include "rwlock.hpp"
#include "ugid.hpp"
#include <fcntl.h>
#include <fuse.h>
#include <string>
#include <vector>
#include <fcntl.h>
using std::string;
using std::vector;
using mergerfs::Policy;
static
int
_open_core(const string *basepath_,
const char *fusepath_,
const int flags_,
const bool link_cow_,
uint64_t &fh_)
namespace local
{
int fd;
string fullpath;
static
int
open_core(const string &basepath_,
const char *fusepath_,
const int flags_,
const bool link_cow_,
uint64_t *fh_)
{
int fd;
string fullpath;
fs::path::make(basepath_,fusepath_,fullpath);
fs::path::make(basepath_,fusepath_,&fullpath);
if(link_cow_ && fs::cow::is_eligible(fullpath.c_str(),flags_))
fs::cow::break_link(fullpath.c_str());
if(link_cow_ && fs::cow::is_eligible(fullpath.c_str(),flags_))
fs::cow::break_link(fullpath.c_str());
fd = fs::open(fullpath,flags_);
if(fd == -1)
return -errno;
fd = fs::open(fullpath,flags_);
if(fd == -1)
return -errno;
fh_ = reinterpret_cast<uint64_t>(new FileInfo(fd,fusepath_));
*fh_ = reinterpret_cast<uint64_t>(new FileInfo(fd,fusepath_));
return 0;
}
return 0;
}
static
int
_open(Policy::Func::Search searchFunc_,
const Branches &branches_,
const uint64_t minfreespace_,
const char *fusepath_,
const int flags_,
const bool link_cow_,
uint64_t &fh_)
{
int rv;
vector<const string*> basepaths;
static
int
open(Policy::Func::Search searchFunc_,
const Branches &branches_,
const uint64_t minfreespace_,
const char *fusepath_,
const int flags_,
const bool link_cow_,
uint64_t *fh_)
{
int rv;
vector<const string*> basepaths;
rv = searchFunc_(branches_,fusepath_,minfreespace_,basepaths);
if(rv == -1)
return -errno;
rv = searchFunc_(branches_,fusepath_,minfreespace_,basepaths);
if(rv == -1)
return -errno;
return _open_core(basepaths[0],fusepath_,flags_,link_cow_,fh_);
return local::open_core(*basepaths[0],fusepath_,flags_,link_cow_,fh_);
}
}
namespace mergerfs
@ -92,13 +95,14 @@ namespace mergerfs
const ugid::Set ugid(fc->uid,fc->gid);
const rwlock::ReadGuard readlock(&config.branches_lock);
return _open(config.open,
config.branches,
config.minfreespace,
fusepath_,
ffi_->flags,
config.link_cow,
ffi_->fh);
ffi_->direct_io = config.direct_io;
return local::open(config.open,
config.branches,
config.minfreespace,
fusepath_,
ffi_->flags,
config.link_cow,
&ffi_->fh);
}
}
}