Re: [PATCH 013 of 20] knfsd: nfsd: factor out code fromshow_expflags

[Andrew Morton]

On Tue, 10 Jul 2007 12:27:37 +1000 NeilBrown <neilb@xxxxxxx> wrote:

> +static void exp_flags(struct seq_file *m, int flag, int fsid,
> +		uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fsloc)
> +{
> +	show_expflags(m, flag, NFSEXP_ALLFLAGS);
>  	if (flag & NFSEXP_FSID)
> -		seq_printf(m, "%sfsid=%d", first++?",":"", fsid);
> +		seq_printf(m, ",fsid=%d", fsid);
>  	if (anonu != (uid_t)-2 && anonu != (0x10000-2))
> -		seq_printf(m, "%sanonuid=%d", first++?",":"", anonu);
> +		seq_printf(m, ",sanonuid=%d", anonu);

It's a bit presumptuous to print a uid_t with "%d".  Fortunately it
will work OK with all the present architectures.

But in general: be cautious when feeding opaque types to printk.
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