50 static int dffd;  variable
185 	if ((dffd = open(dfpath, O_RDWR, 0644)) == -1) {  in getdf()
186 		if ((dffd = open(dfpath,  in getdf()
197 		if (write(dffd, buf, strlen(buf) + 1) !=  in getdf()
201 		if (read(dffd, buf, sizeof(buf)) < 1) {  in getdf()
208 	close(dffd);  in getdf()
217 	if ((dffd = open(dfpath, O_RDWR, 0644)) == -1) {  in reservedf()
222 	if (read(dffd, buf, sizeof(buf)) < 1) {  in reservedf()
239 	if (lseek(dffd, 0, 0) == -1)  in reservedf()
241 	if (write(dffd, buf, strlen(buf) + 1) != (ssize_t)strlen(buf) +1)  in reservedf()
244 	close(dffd);  in reservedf()