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: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Родитель
3dec2246c2
Коммит
1bf9310a13
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@ -660,8 +660,8 @@ static void netlink_queue_mmaped_skb(struct sock *sk, struct sk_buff *skb)
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hdr->nm_len = skb->len;
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hdr->nm_group = NETLINK_CB(skb).dst_group;
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hdr->nm_pid = NETLINK_CB(skb).creds.pid;
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hdr->nm_uid = NETLINK_CB(skb).creds.uid;
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hdr->nm_gid = NETLINK_CB(skb).creds.gid;
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hdr->nm_uid = from_kuid(sk_user_ns(sk), NETLINK_CB(skb).creds.uid);
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hdr->nm_gid = from_kgid(sk_user_ns(sk), NETLINK_CB(skb).creds.gid);
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netlink_frame_flush_dcache(hdr);
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netlink_set_status(hdr, NL_MMAP_STATUS_VALID);
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@ -690,8 +690,8 @@ static void netlink_ring_set_copied(struct sock *sk, struct sk_buff *skb)
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hdr->nm_len = skb->len;
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hdr->nm_group = NETLINK_CB(skb).dst_group;
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hdr->nm_pid = NETLINK_CB(skb).creds.pid;
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hdr->nm_uid = NETLINK_CB(skb).creds.uid;
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hdr->nm_gid = NETLINK_CB(skb).creds.gid;
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hdr->nm_uid = from_kuid(sk_user_ns(sk), NETLINK_CB(skb).creds.uid);
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hdr->nm_gid = from_kgid(sk_user_ns(sk), NETLINK_CB(skb).creds.gid);
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netlink_set_status(hdr, NL_MMAP_STATUS_COPY);
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}
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