sftp_errno        489 src/vfs/sftpfs/connection.c         int sftp_errno;
sftp_errno        491 src/vfs/sftpfs/connection.c         sftp_errno = libssh2_session_last_errno (sftpfs_super->session);
sftp_errno        492 src/vfs/sftpfs/connection.c         sftpfs_ssherror_to_gliberror (sftpfs_super, sftp_errno, mcerror);