+ if (info_ != MPI_INFO_NULL)
+ info_->ref();
+ std::string fullname=filename;
+ if (simgrid::s4u::Host::current()->get_disks().empty())
+ xbt_die("SMPI/IO : Trying to open file on a diskless host ! Add one to your platform file");
+
+ size_t found=fullname.find('/');
+ //in case no fullpath is provided ... just pick the first mountpoint.
+ if(found==std::string::npos || fullname.rfind("./", 1) != std::string::npos){
+ auto disk = simgrid::s4u::Host::current()->get_disks().front();
+ std::string mount;
+ if (disk->get_host() != simgrid::s4u::Host::current())
+ mount = disk->extension<simgrid::s4u::FileSystemDiskExt>()->get_mount_point(disk->get_host());
+ else
+ mount = disk->extension<simgrid::s4u::FileSystemDiskExt>()->get_mount_point();
+ XBT_DEBUG("No absolute path given for file opening, use '%s'", mount.c_str());
+ if(fullname.rfind("./",1) != std::string::npos)
+ fullname.replace(fullname.begin(), fullname.begin() + 1, mount);
+ else{
+ mount.append("/");
+ fullname.insert(0, mount);
+ }
+ }
+
+ file_= new simgrid::s4u::File(fullname, nullptr);