On Fri, Jul 20, 2007 at 12:37:45PM +0900, Tetsuo Handa wrote:
> --- linux-2.6.22-orig/kernel/sysctl.c
> +++ linux-2.6.22/kernel/sysctl.c
> @@ -1190,9 +1190,9 @@
> return -ENOTDIR;
> if (get_user(n, name))
> return -EFAULT;
> + if (!n)
> + return -ENOTDIR;
> for ( ; table->ctl_name || table->procname; table++) {
> - if (!table->ctl_name)
> - continue;
> if (n == table->ctl_name) {
> int error;
> if (table->child) {
I don't like this. For one, it destroy some symmetry in sysctl table
walking code, where sysctl(2) code checks for valid ->ctl_name, and proc
code checks for valid ->procname and both have same for loop. For two,
nobody uses sysctl(2), sysctl aren't big, so this optimization is
unneeded.
-
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