On Fri, 21 Apr 2017, Johannes Berg wrote:
> Hi,
>
> I'm exploring backporting the netlink error reporting stuff from Linux
> in backports. I have this:
>
> static __genl_const struct genl_ops nl80211_ops[] = {
> {
> .cmd = NL80211_CMD_GET_WIPHY,
> .doit = nl80211_get_wiphy,
> .dumpit = nl80211_dump_wiphy,
> .done = nl80211_dump_wiphy_done,
> .policy = nl80211_policy,
> /* can be retrieved by unprivileged users */
> .internal_flags = NL80211_FLAG_NEED_WIPHY |
> NL80211_FLAG_NEED_RTNL,
> },
> {
> .cmd = NL80211_CMD_SET_WIPHY,
> .doit = nl80211_set_wiphy,
> .policy = nl80211_policy,
> .flags = GENL_UNS_ADMIN_PERM,
> .internal_flags = NL80211_FLAG_NEED_RTNL,
> },
> [...]
> };
>
> and would like to wrap all the .doit calls.
>
> This works for the first instance, but I can't seem to figure out if
> it's possible to apply to each one:
>
> @@
> identifier fn;
> fresh identifier wrap_fn = "_wrap_" ## fn;
> @@
> +static int wrap_fn(struct sk_buff *skb, struct genl_info *info)
> +{
> + return fn(skb, info);
> +}
> static struct genl_ops nl80211_ops[] = {
Just add ..., here (note the comma at the end).
julia
> {
> - .doit = fn,
> + .doit = wrap_fn,
> ...
> },
> ...
> };
>
> Is there a way to loop over all the initializers?
>
> johannes
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