552                      const string& mountpoint,  in MountFilesystem()  argument
564                    mountpoint.c_str(),  in MountFilesystem()
572                   << mountpoint << " as " << fstype;  in MountFilesystem()
580 bool UnmountFilesystem(const string& mountpoint) {  in UnmountFilesystem()  argument
583     if (umount(mountpoint.c_str()) == 0)  in UnmountFilesystem()
590     LOG(INFO) << "Not a mountpoint: " << mountpoint;  in UnmountFilesystem()
593   PLOG(WARNING) << "Error unmounting " << mountpoint << " after " << num_retries  in UnmountFilesystem()
595   if (umount2(mountpoint.c_str(), MNT_DETACH) != 0) {  in UnmountFilesystem()
602 bool IsMountpoint(const std::string& mountpoint) {  in IsMountpoint()  argument
611   if (lstat(mountpoint.c_str(), &stdir) != 0) {  in IsMountpoint()
612     PLOG(ERROR) << "Error stat'ing " << mountpoint;  in IsMountpoint()
618   base::FilePath parent(mountpoint);  in IsMountpoint()