[NETLINK]: Correctly set NLM_F_MULTI without checking the pid
This patch rectifies some rtnetlink message builders that derive the
flags from the pid. It is now explicit like the other cases
which get it right. Also fixes half a dozen dumpers which did not
set NLM_F_MULTI at all.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index ee7bf46..00233ec 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -716,13 +716,13 @@
}
static int dn_dev_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa,
- u32 pid, u32 seq, int event)
+ u32 pid, u32 seq, int event, unsigned int flags)
{
struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*ifm));
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
ifm = NLMSG_DATA(nlh);
ifm->ifa_family = AF_DECnet;
@@ -755,7 +755,7 @@
netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, ENOBUFS);
return;
}
- if (dn_dev_fill_ifaddr(skb, ifa, 0, 0, event) < 0) {
+ if (dn_dev_fill_ifaddr(skb, ifa, 0, 0, event, 0) < 0) {
kfree_skb(skb);
netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, EINVAL);
return;
@@ -790,7 +790,8 @@
if (dn_dev_fill_ifaddr(skb, ifa,
NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq,
- RTM_NEWADDR) <= 0)
+ RTM_NEWADDR,
+ NLM_F_MULTI) <= 0)
goto done;
}
}
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 1e7b5c3..2399fa8 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -1465,7 +1465,8 @@
return dn_route_input_slow(skb);
}
-static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event, int nowait)
+static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq,
+ int event, int nowait, unsigned int flags)
{
struct dn_route *rt = (struct dn_route *)skb->dst;
struct rtmsg *r;
@@ -1473,9 +1474,8 @@
unsigned char *b = skb->tail;
struct rta_cacheinfo ci;
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*r));
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
r = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = (nowait && pid) ? NLM_F_MULTI : 0;
r->rtm_family = AF_DECnet;
r->rtm_dst_len = 16;
r->rtm_src_len = 0;
@@ -1596,7 +1596,7 @@
NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
- err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0);
+ err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0, 0);
if (err == 0)
goto out_free;
@@ -1644,7 +1644,8 @@
continue;
skb->dst = dst_clone(&rt->u.dst);
if (dn_rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_NEWROUTE, 1) <= 0) {
+ cb->nlh->nlmsg_seq, RTM_NEWROUTE,
+ 1, NLM_F_MULTI) <= 0) {
dst_release(xchg(&skb->dst, NULL));
rcu_read_unlock_bh();
goto done;
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 597587d..1060de7 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -342,14 +342,15 @@
.notifier_call = dn_fib_rules_event,
};
-static int dn_fib_fill_rule(struct sk_buff *skb, struct dn_fib_rule *r, struct netlink_callback *cb)
+static int dn_fib_fill_rule(struct sk_buff *skb, struct dn_fib_rule *r,
+ struct netlink_callback *cb, unsigned int flags)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
- nlh = NLMSG_PUT(skb, NETLINK_CREDS(cb->skb)->pid, cb->nlh->nlmsg_seq, RTM_NEWRULE, sizeof(*rtm));
+ nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWRULE, sizeof(*rtm), flags);
rtm = NLMSG_DATA(nlh);
rtm->rtm_family = AF_DECnet;
rtm->rtm_dst_len = r->r_dst_len;
@@ -394,7 +395,7 @@
for(r = dn_fib_rules, idx = 0; r; r = r->r_next, idx++) {
if (idx < s_idx)
continue;
- if (dn_fib_fill_rule(skb, r, cb) < 0)
+ if (dn_fib_fill_rule(skb, r, cb, NLM_F_MULTI) < 0)
break;
}
read_unlock(&dn_fib_rules_lock);
diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c
index dad5603..28ba5777a 100644
--- a/net/decnet/dn_table.c
+++ b/net/decnet/dn_table.c
@@ -270,13 +270,13 @@
static int dn_fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
u8 tb_id, u8 type, u8 scope, void *dst, int dst_len,
- struct dn_fib_info *fi)
+ struct dn_fib_info *fi, unsigned int flags)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*rtm));
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*rtm), flags);
rtm = NLMSG_DATA(nlh);
rtm->rtm_family = AF_DECnet;
rtm->rtm_dst_len = dst_len;
@@ -345,7 +345,7 @@
if (dn_fib_dump_info(skb, pid, nlh->nlmsg_seq, event, tb_id,
f->fn_type, f->fn_scope, &f->fn_key, z,
- DN_FIB_INFO(f)) < 0) {
+ DN_FIB_INFO(f), 0) < 0) {
kfree_skb(skb);
return;
}
@@ -377,7 +377,7 @@
tb->n,
(f->fn_state & DN_S_ZOMBIE) ? 0 : f->fn_type,
f->fn_scope, &f->fn_key, dz->dz_order,
- f->fn_info) < 0) {
+ f->fn_info, NLM_F_MULTI) < 0) {
cb->args[3] = i;
return -1;
}