68 static int histfd = -1;  variable
544 	if (histfd != -1) {  in sethistfile()
546 		(void)close(histfd);  in sethistfile()
547 		histfd = -1;  in sethistfile()
589 	if (histfd != -1) {  in histsync()
654 	if (svmode == HIST_STORE && histfd != -1)  in histsave()
731 	    lseek(histfd, (off_t)0, SEEK_SET) < 0)  in hist_persist_back()
751 			if ((w = write(histfd, cp, n)) != -1) {  in hist_persist_back()
764 	if (ftruncate(histfd, tot)) {  in hist_persist_back()
790 	if ((histfd = savefd(fd)) < 0)  in hist_persist_init()
792 	if (histfd != fd)  in hist_persist_init()
795 	mksh_lockfd(histfd);  in hist_persist_init()
797 	histfsize = lseek(histfd, (off_t)0, SEEK_END);  in hist_persist_init()
804 		    MAP_FILE | MAP_PRIVATE, histfd, (off_t)0);  in hist_persist_init()
828 			if (fstat(histfd, &sb) >= 0 &&  in hist_persist_init()
878 		if (write(histfd, sprinkle, 2) != 2) {  in hist_persist_init()
884 	if ((histfsize = lseek(histfd, (off_t)0, SEEK_END)) < 0)  in hist_persist_init()
887 	mksh_unlkfd(histfd);  in hist_persist_init()
967 	mksh_lockfd(histfd);  in writehistfile()
968 	if ((sizenow = lseek(histfd, (off_t)0, SEEK_END)) < 0)  in writehistfile()
985 		    MAP_FILE | MAP_PRIVATE, histfd, (off_t)0);  in writehistfile()
1000 	if (cmd && !writehistline(histfd, lno, cmd)) {  in writehistfile()
1005 	if ((histfsize = lseek(histfd, (off_t)0, SEEK_END)) < 0)  in writehistfile()
1007 	mksh_unlkfd(histfd);  in writehistfile()
1028 	if (histfd >= 0) {  in hist_finish()
1029 		mksh_unlkfd(histfd);  in hist_finish()
1030 		(void)close(histfd);  in hist_finish()
1032 	histfd = -1;  in hist_finish()