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Index: head/usr.sbin/makefs/msdos.h
===================================================================
--- head/usr.sbin/makefs/msdos.h
+++ head/usr.sbin/makefs/msdos.h
@@ -51,6 +51,7 @@
size_t cn_namelen;
};
+int msdosfs_fsiflush(struct msdosfsmount *);
struct msdosfsmount *msdosfs_mount(struct vnode *);
int msdosfs_root(struct msdosfsmount *, struct vnode *);
Index: head/usr.sbin/makefs/msdos.c
===================================================================
--- head/usr.sbin/makefs/msdos.c
+++ head/usr.sbin/makefs/msdos.c
@@ -203,6 +203,8 @@
errx(1, "Image file `%s' not created.", image);
TIMER_RESULTS(start, "msdos_populate_dir");
+ if (msdosfs_fsiflush(pmp) != 0)
+ errx(1, "Unable to update FSInfo block.");
if (debug & DEBUG_FS_MAKEFS)
putchar('\n');
Index: head/usr.sbin/makefs/msdos/msdosfs_vfsops.c
===================================================================
--- head/usr.sbin/makefs/msdos/msdosfs_vfsops.c
+++ head/usr.sbin/makefs/msdos/msdosfs_vfsops.c
@@ -359,3 +359,33 @@
vp->v_data = ndep;
return 0;
}
+
+/*
+ * If we have an FSInfo block, update it.
+ */
+int
+msdosfs_fsiflush(struct msdosfsmount *pmp)
+{
+ struct fsinfo *fp;
+ struct buf *bp;
+ int error;
+
+ if (pmp->pm_fsinfo == 0 || (pmp->pm_flags & MSDOSFS_FSIMOD) == 0) {
+ error = 0;
+ goto out;
+ }
+ error = bread(pmp->pm_devvp, pmp->pm_fsinfo, pmp->pm_BytesPerSec,
+ NOCRED, &bp);
+ if (error != 0) {
+ brelse(bp);
+ goto out;
+ }
+ fp = (struct fsinfo *)bp->b_data;
+ putulong(fp->fsinfree, pmp->pm_freeclustercount);
+ putulong(fp->fsinxtfree, pmp->pm_nxtfree);
+ pmp->pm_flags &= ~MSDOSFS_FSIMOD;
+ error = bwrite(bp);
+
+out:
+ return (error);
+}

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