[DragonFlyBSD - Bug #2334] 32/64bit problem in msdosfs

[Venkatesh Srinivas via Redmine]

Issue #2334 has been updated by Venkatesh Srinivas.


Confirmed with an 8GB filesystem locally; patch committed to master. (68cc29492751172e9897a90c303b1c7fbb18112a)

Should be MFC-ed.
----------------------------------------
Bug #2334: 32/64bit problem in msdosfs
http://bugs.dragonflybsd.org/issues/2334

Author: G. Isenmann
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


Just noticed on 3.0.2/x86_64 that there is at least one 32/64 problem
in msdosfs:

--- sys/vfs/msdosfs/msdosfs_vfsops.c.orig       2012-03-25 11:40:42.453342000 +0200
+++ sys/vfs/msdosfs/msdosfs_vfsops.c    2012-03-25 11:40:51.693034000 +0200
@@ -542,7 +542,7 @@
                    && !bcmp(fp->fsisig3, "\0\0\125\252", 4)
                    && !bcmp(fp->fsisig4, "\0\0\125\252", 4)) {
                        pmp->pm_nxtfree = getulong(fp->fsinxtfree);
-                       if (pmp->pm_nxtfree == 0xffffffff)
+                       if (pmp->pm_nxtfree == (u_long)-1)
                                pmp->pm_nxtfree = CLUST_FIRST;
                } else
                        pmp->pm_fsinfo = 0;

Without this change I get "Next free cluster in FSInfo
(18446744073709551615) exceeds maxcluster (244833)" when I try to
mount a 8GB SDHC card on x86_64.



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