make sure that the whole file system is writable!

SCCS-vsn: sbin/newfs/mkfs.c 2.10

diff --git a/usr/src/sbin/newfs/mkfs.c b/usr/src/sbin/newfs/mkfs.c
index b056717..f0a30e6 100644 (file)
--- a/usr/src/sbin/newfs/mkfs.c
+++ b/usr/src/sbin/newfs/mkfs.c
@@ -1,4 +1,4 @@
-static char *sccsid = "@(#)mkfs.c      2.9 (Berkeley) %G%";
+static char *sccsid = "@(#)mkfs.c      2.10 (Berkeley) %G%";

 
 /*
  * make file system for cylinder-group style file systems
 
 /*
  * make file system for cylinder-group style file systems


@@ -160,8 +160,13 @@ main(argc, argv)
        }
        argc = 0;
 #endif
        }
        argc = 0;
 #endif

+       /*
+        * Validate the given file system size.
+        * Verify that its last block can actually be accessed.
+        */

        if (fssize <= 0)
                printf("preposterous size %d\n", fssize), exit(1);
        if (fssize <= 0)
                printf("preposterous size %d\n", fssize), exit(1);

+       wtfs(fssize - 1, DEV_BSIZE, (char *)&sblock);

        /*
         * collect and verify the sector and track info
         */
        /*
         * collect and verify the sector and track info
         */


@@ -816,7 +821,6 @@ wtfs(bno, size, bf)
 {
        int n;
 
 {
        int n;
 

-       lseek(fso, bno * DEV_BSIZE, 0);

        if (lseek(fso, bno * DEV_BSIZE, 0) < 0) {
                printf("seek error: %ld\n", bno);
                perror("wtfs");
        if (lseek(fso, bno * DEV_BSIZE, 0) < 0) {
                printf("seek error: %ld\n", bno);
                perror("wtfs");