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Diffstat (limited to 'net/phonet/pn_netlink.c')
-rw-r--r--net/phonet/pn_netlink.c57
1 files changed, 34 insertions, 23 deletions
diff --git a/net/phonet/pn_netlink.c b/net/phonet/pn_netlink.c
index 58b3b1f991e..b64151ade6b 100644
--- a/net/phonet/pn_netlink.c
+++ b/net/phonet/pn_netlink.c
@@ -5,8 +5,8 @@
*
* Copyright (C) 2008 Nokia Corporation.
*
- * Contact: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
- * Original author: Sakari Ailus <sakari.ailus@nokia.com>
+ * Authors: Sakari Ailus <sakari.ailus@nokia.com>
+ * Remi Denis-Courmont
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -33,7 +33,7 @@
/* Device address handling */
static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr,
- u32 pid, u32 seq, int event);
+ u32 portid, u32 seq, int event);
void phonet_address_notify(int event, struct net_device *dev, u8 addr)
{
@@ -61,7 +61,7 @@ static const struct nla_policy ifa_phonet_policy[IFA_MAX+1] = {
[IFA_LOCAL] = { .type = NLA_U8 },
};
-static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
+static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tb[IFA_MAX+1];
@@ -70,7 +70,10 @@ static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
int err;
u8 pnaddr;
- if (!capable(CAP_SYS_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
@@ -101,12 +104,12 @@ static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
}
static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr,
- u32 pid, u32 seq, int event)
+ u32 portid, u32 seq, int event)
{
struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(*ifm), 0);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), 0);
if (nlh == NULL)
return -EMSGSIZE;
@@ -116,7 +119,8 @@ static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr,
ifm->ifa_flags = IFA_F_PERMANENT;
ifm->ifa_scope = RT_SCOPE_LINK;
ifm->ifa_index = dev->ifindex;
- NLA_PUT_U8(skb, IFA_LOCAL, addr);
+ if (nla_put_u8(skb, IFA_LOCAL, addr))
+ goto nla_put_failure;
return nlmsg_end(skb, nlh);
nla_put_failure:
@@ -147,7 +151,7 @@ static int getaddr_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
continue;
if (fill_addr(skb, pnd->netdev, addr << 2,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, RTM_NEWADDR) < 0)
goto out;
}
@@ -164,12 +168,12 @@ out:
/* Routes handling */
static int fill_route(struct sk_buff *skb, struct net_device *dev, u8 dst,
- u32 pid, u32 seq, int event)
+ u32 portid, u32 seq, int event)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
- nlh = nlmsg_put(skb, pid, seq, event, sizeof(*rtm), 0);
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(*rtm), 0);
if (nlh == NULL)
return -EMSGSIZE;
@@ -183,8 +187,9 @@ static int fill_route(struct sk_buff *skb, struct net_device *dev, u8 dst,
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
rtm->rtm_type = RTN_UNICAST;
rtm->rtm_flags = 0;
- NLA_PUT_U8(skb, RTA_DST, dst);
- NLA_PUT_U32(skb, RTA_OIF, dev->ifindex);
+ if (nla_put_u8(skb, RTA_DST, dst) ||
+ nla_put_u32(skb, RTA_OIF, dev->ifindex))
+ goto nla_put_failure;
return nlmsg_end(skb, nlh);
nla_put_failure:
@@ -219,7 +224,7 @@ static const struct nla_policy rtm_phonet_policy[RTA_MAX+1] = {
[RTA_OIF] = { .type = NLA_U32 },
};
-static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
+static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tb[RTA_MAX+1];
@@ -228,7 +233,10 @@ static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
int err;
u8 dst;
- if (!capable(CAP_SYS_ADMIN))
+ if (!netlink_capable(skb, CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
@@ -264,21 +272,23 @@ static int route_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
struct net *net = sock_net(skb->sk);
u8 addr, addr_idx = 0, addr_start_idx = cb->args[0];
+ rcu_read_lock();
for (addr = 0; addr < 64; addr++) {
struct net_device *dev;
- dev = phonet_route_get(net, addr << 2);
+ dev = phonet_route_get_rcu(net, addr << 2);
if (!dev)
continue;
if (addr_idx++ < addr_start_idx)
continue;
- if (fill_route(skb, dev, addr << 2, NETLINK_CB(cb->skb).pid,
+ if (fill_route(skb, dev, addr << 2, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, RTM_NEWROUTE))
goto out;
}
out:
+ rcu_read_unlock();
cb->args[0] = addr_idx;
cb->args[1] = 0;
@@ -287,15 +297,16 @@ out:
int __init phonet_netlink_register(void)
{
- int err = __rtnl_register(PF_PHONET, RTM_NEWADDR, addr_doit, NULL);
+ int err = __rtnl_register(PF_PHONET, RTM_NEWADDR, addr_doit,
+ NULL, NULL);
if (err)
return err;
/* Further __rtnl_register() cannot fail */
- __rtnl_register(PF_PHONET, RTM_DELADDR, addr_doit, NULL);
- __rtnl_register(PF_PHONET, RTM_GETADDR, NULL, getaddr_dumpit);
- __rtnl_register(PF_PHONET, RTM_NEWROUTE, route_doit, NULL);
- __rtnl_register(PF_PHONET, RTM_DELROUTE, route_doit, NULL);
- __rtnl_register(PF_PHONET, RTM_GETROUTE, NULL, route_dumpit);
+ __rtnl_register(PF_PHONET, RTM_DELADDR, addr_doit, NULL, NULL);
+ __rtnl_register(PF_PHONET, RTM_GETADDR, NULL, getaddr_dumpit, NULL);
+ __rtnl_register(PF_PHONET, RTM_NEWROUTE, route_doit, NULL, NULL);
+ __rtnl_register(PF_PHONET, RTM_DELROUTE, route_doit, NULL, NULL);
+ __rtnl_register(PF_PHONET, RTM_GETROUTE, NULL, route_dumpit, NULL);
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:48:35 +0000