On Thu, Jul 18, 2013 at 03:29:17PM +0800, Chen Gang wrote:
> On 07/18/2013 12:28 PM, Chen Gang wrote:
> >
> >> strcpy(fmt1, fmt);
> >> @@ -199,46 +214,51 @@ static void prepare_error_buf(const char *fmt,
> >> va_list args)
> >> while ((k = is_there_reiserfs_struct(fmt1, &what)) != NULL) {
> >> *k = 0;
> >>
> >> - p += vsprintf(p, fmt1, args);
> >> + p += vsnprintf(p, left, fmt1, args);
>
> At least, need use vscnprintf() instead of vsnprintf(), since we need
> the real written length return.
n = vsnprintf(p, left, ....);
left -= n;
if (left <= 0) /* overflow */
break; /* or whatever's suitable here */
p += n;
--
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