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| author |   Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2018-11-26 15:42:05 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-27 16:20:20 -0800 |
| commit | 3a4f68bf660414801781fd06506a9c75c2d936e5 (patch) | |
| tree | addaab122fc0bd50f974b12dac242b76000115d2 /net/core/net_namespace.c | |
| parent | netns: add support of NETNSA_TARGET_NSID (diff) | |
| download | linux-dev-3a4f68bf660414801781fd06506a9c75c2d936e5.tar.xz linux-dev-3a4f68bf660414801781fd06506a9c75c2d936e5.zip | |
netns: enable to specify a nsid for a get request
Combined with NETNSA_TARGET_NSID, it enables to "translate" a nsid from one
netns to a nsid of another netns.
This is useful when using NETLINK_F_LISTEN_ALL_NSID because it helps the
user to interpret a nsid received from an other netns.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/core/net_namespace.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 885c54197e31..dd25fb22ad45 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -797,6 +797,11 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh, } else if (tb[NETNSA_FD]) { peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD])); nla = tb[NETNSA_FD]; + } else if (tb[NETNSA_NSID]) { + peer = get_net_ns_by_id(net, nla_get_u32(tb[NETNSA_NSID])); + if (!peer) + peer = ERR_PTR(-ENOENT); + nla = tb[NETNSA_NSID]; } else { NL_SET_ERR_MSG(extack, "Peer netns reference is missing"); return -EINVAL; |