From mboxrd@z Thu Jan  1 00:00:00 1970
From: johannes@sipsolutions.net (Johannes Berg)
Date: Fri, 21 Apr 2017 15:12:23 +0200
Subject: [Cocci] modifying array initializers?
Message-ID: <1492780343.2564.4.camel@sipsolutions.net>
To: cocci@systeme.lip6.fr
List-Id: cocci@systeme.lip6.fr

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[] = {
????????{
-???????????????.doit = fn,
+???????????????.doit = wrap_fn,
????????????????...
????????},
????????...
};

Is there a way to loop over all the initializers?

johannes