Modify mtools to support the dummy 8.3 short filename values used by
Linux systems with the VFAT_FS_NO_DUALNAMES option enabled.

Signed-off-by: Andrew Tridgell <tridge@samba.org>

diff -urp mtools-4.0.10.saved/mdir.c mtools-4.0.10/mdir.c
--- mtools-4.0.10.saved/mdir.c	2009-03-03 17:10:12.000000000 +1100
+++ mtools-4.0.10/mdir.c	2009-07-16 22:59:10.000000000 +1000
@@ -416,11 +416,15 @@ static int list_file(direntry_t *entry, 
 		wchar_to_native(name,tmpBasename,8);
 		wchar_to_native(ext,tmpExt,3);
 
-		/* is a subdirectory */
-		if(mtools_dotted_dir)
+		/* check if it is a dummy name field from a patched
+		   Linux kernel */
+		if (Case & FAT_NO_83NAME) 
+			printf("             ");
+		else if(mtools_dotted_dir)
 			printf("%s", global_shortname);
 		else
 			printf("%s %s ", tmpBasename, tmpExt);
+		/* is a subdirectory */
 		if(IS_DIR(entry))
 			printf("<DIR>    ");
 		else
diff -urp mtools-4.0.10.saved/msdos.h mtools-4.0.10/msdos.h
--- mtools-4.0.10.saved/msdos.h	2009-03-03 17:10:10.000000000 +1100
+++ mtools-4.0.10/msdos.h	2009-07-16 22:58:35.000000000 +1000
@@ -56,6 +56,7 @@ struct directory {
 
 #define EXTCASE 0x10
 #define BASECASE 0x8
+#define FAT_NO_83NAME 0x20
 
 #define MAX16 0xffff
 #define MAX32 0xffffffff
diff -urp mtools-4.0.10.saved/vfat.c mtools-4.0.10/vfat.c
--- mtools-4.0.10.saved/vfat.c	2009-03-01 10:20:41.000000000 +1100
+++ mtools-4.0.10/vfat.c	2009-06-09 15:55:04.000000000 +1000
@@ -170,7 +170,7 @@ static __inline__ unsigned char sum_shor
 
 	for (sum=0; name<end; ++name)
 		sum = ((sum & 1) ? 0x80 : 0) + (sum >> 1)
-		  + (*name ? *name : ' ');
+		  + *name;
 	return(sum);
 }
 
@@ -191,8 +191,8 @@ static __inline__ void check_vfat(struct
 		return;
 	}
 
-	strncpy(dn.base, (char *)dir->name, 8);
-	strncpy(dn.ext, (char *)dir->ext, 3);
+	memcpy(dn.base, (char *)dir->name, 8);
+	memcpy(dn.ext, (char *)dir->ext, 3);
 
 	if (v->sum != sum_shortname(&dn))
 		return;