Commit 1bf9310a authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by David S. Miller

netlink: fix compilation after memory mapped patches

Depending of the kernel configuration (CONFIG_UIDGID_STRICT_TYPE_CHECKS), we can
get the following errors:

net/netlink/af_netlink.c: In function ‘netlink_queue_mmaped_skb’:
net/netlink/af_netlink.c:663:14: error: incompatible types when assigning to type ‘__u32’ from type ‘kuid_t’
net/netlink/af_netlink.c:664:14: error: incompatible types when assigning to type ‘__u32’ from type ‘kgid_t’
net/netlink/af_netlink.c: In function ‘netlink_ring_set_copied’:
net/netlink/af_netlink.c:693:14: error: incompatible types when assigning to type ‘__u32’ from type ‘kuid_t’
net/netlink/af_netlink.c:694:14: error: incompatible types when assigning to type ‘__u32’ from type ‘kgid_t’

We must use the helpers to get the uid and gid, and also take care of user_ns.

Fix suggested by Eric W. Biederman <ebiederm@xmission.com>.
Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3dec2246
...@@ -660,8 +660,8 @@ static void netlink_queue_mmaped_skb(struct sock *sk, struct sk_buff *skb) ...@@ -660,8 +660,8 @@ static void netlink_queue_mmaped_skb(struct sock *sk, struct sk_buff *skb)
hdr->nm_len = skb->len; hdr->nm_len = skb->len;
hdr->nm_group = NETLINK_CB(skb).dst_group; hdr->nm_group = NETLINK_CB(skb).dst_group;
hdr->nm_pid = NETLINK_CB(skb).creds.pid; hdr->nm_pid = NETLINK_CB(skb).creds.pid;
hdr->nm_uid = NETLINK_CB(skb).creds.uid; hdr->nm_uid = from_kuid(sk_user_ns(sk), NETLINK_CB(skb).creds.uid);
hdr->nm_gid = NETLINK_CB(skb).creds.gid; hdr->nm_gid = from_kgid(sk_user_ns(sk), NETLINK_CB(skb).creds.gid);
netlink_frame_flush_dcache(hdr); netlink_frame_flush_dcache(hdr);
netlink_set_status(hdr, NL_MMAP_STATUS_VALID); netlink_set_status(hdr, NL_MMAP_STATUS_VALID);
...@@ -690,8 +690,8 @@ static void netlink_ring_set_copied(struct sock *sk, struct sk_buff *skb) ...@@ -690,8 +690,8 @@ static void netlink_ring_set_copied(struct sock *sk, struct sk_buff *skb)
hdr->nm_len = skb->len; hdr->nm_len = skb->len;
hdr->nm_group = NETLINK_CB(skb).dst_group; hdr->nm_group = NETLINK_CB(skb).dst_group;
hdr->nm_pid = NETLINK_CB(skb).creds.pid; hdr->nm_pid = NETLINK_CB(skb).creds.pid;
hdr->nm_uid = NETLINK_CB(skb).creds.uid; hdr->nm_uid = from_kuid(sk_user_ns(sk), NETLINK_CB(skb).creds.uid);
hdr->nm_gid = NETLINK_CB(skb).creds.gid; hdr->nm_gid = from_kgid(sk_user_ns(sk), NETLINK_CB(skb).creds.gid);
netlink_set_status(hdr, NL_MMAP_STATUS_COPY); netlink_set_status(hdr, NL_MMAP_STATUS_COPY);
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment