Allow root to choose vfat policy to UTF8

[Arjan van de Ven <arjanv@redhat.com>]

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Hi,

Right now the kernel detects the sysadmin trying to set the iocharset of
vfat to UTF8 and prevents this with an error. While I can see that this is
not recommended, enforcing this is policy that probably doesn't belong in
the kernel. The patch below makes this situation a warning and a
recommendation instead of a strong blockage.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=126641

is an example of a sysadmin disliking this policy enforcement.

Greetings,
    Arjan van de Ven

--- linux-2.6.7/fs/fat/inode.c~	2004-06-24 11:20:43.941750760 +0200
+++ linux-2.6.7/fs/fat/inode.c	2004-06-24 11:20:43.943750521 +0200
@@ -499,9 +499,8 @@
 	}
 	/* UTF8 doesn't provide FAT semantics */
 	if (!strcmp(opts->iocharset, "utf8")) {
-		printk(KERN_ERR "FAT: utf8 is not a valid IO charset"
-		       " for FAT filesystems\n");
-		return -EINVAL;
+		printk(KERN_ERR "FAT: utf8 is not a recommended IO charset"
+		       " for FAT filesystems, filesystem will be case sensitive!\n");
 	}
 
 	if (opts->unicode_xlate)

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