Index: vfs_mount.c
===================================================================
RCS file: /home/ncvs/src/sys/kern/vfs_mount.c,v
retrieving revision 1.109
diff -u -r1.109 vfs_mount.c
--- vfs_mount.c	2003/07/01 17:40:23	1.109
+++ vfs_mount.c	2003/07/16 01:41:52
@@ -103,7 +103,7 @@
 static int	vfs_nmount(struct thread *td, int, struct uio *);
 static int	vfs_mountroot_try(char *mountfrom);
 static int	vfs_mountroot_ask(void);
-static void	gets(char *cp);
+static void	gets(char *cp, int len);
 
 static int	usermount = 0;	/* if 1, non-root can mount fs. */
 SYSCTL_INT(_vfs, OID_AUTO, usermount, CTLFLAG_RW, &usermount, 0, "");
@@ -1622,7 +1622,7 @@
 		printf("  ?                  List valid disk boot devices\n");
 		printf("  <empty line>       Abort manual input\n");
 		printf("\nmountroot> ");
-		gets(name);
+		gets(name, sizeof name);
 		if (name[0] == 0)
 			return(1);
 		if (name[0] == '?') {
@@ -1639,14 +1639,14 @@
  * Local helper function for vfs_mountroot_ask.
  */
 static void
-gets(char *cp)
+gets(char *cp, int len)
 {
 	char *lp;
 	int c;
 
 	lp = cp;
-	for (;;) {
-		printf("%c", c = cngetc() & 0177);
+	for (;lp < cp + len;) {
+		printf("%c", (char)(c = cngetc()) & 0177);
 		switch (c) {
 		case -1:
 		case '\n':
@@ -1671,9 +1671,13 @@
 			printf("%c", '\n');
 			continue;
 		default:
-			*lp++ = c;
+			*lp++ = c & 0177;
 		}
 	}
+	if (lp >= cp + len)
+		*(cp + len - 1) = '\0';
+	else
+		*lp = '\0';
 }
 
 /*