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| author | Jiang Wang <jiang.wang@bytedance.com> | 2021-08-16 19:03:20 +0000 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-08-16 18:42:31 -0700 |
| commit | 77462de14a43f4d98dbd8de0f5743a4e02450b1d (patch) | |
| tree | e843210d31f5ac08391bbb69252e2330aff621fc /net/unix | |
| parent | edce1a248670397f8d0be1f6967eab3c5c082013 (diff) | |
| download | linux-77462de14a43f4d98dbd8de0f5743a4e02450b1d.tar.gz | |
af_unix: Add read_sock for stream socket types
To support sockmap for af_unix stream type, implement read_sock, which is similar to the read_sock for unix dgram sockets. Signed-off-by: Jiang Wang <jiang.wang@bytedance.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Cong Wang <cong.wang@bytedance.com> Acked-by: Jakub Sitnicki <jakub@cloudflare.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20210816190327.2739291-2-jiang.wang@bytedance.com
Diffstat (limited to 'net/unix')
| -rw-r--r-- | net/unix/af_unix.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index bad8f19174e3..4455b62317d4 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -679,6 +679,8 @@ static int unix_dgram_sendmsg(struct socket *, struct msghdr *, size_t); static int unix_dgram_recvmsg(struct socket *, struct msghdr *, size_t, int); static int unix_read_sock(struct sock *sk, read_descriptor_t *desc, sk_read_actor_t recv_actor); +static int unix_stream_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor); static int unix_dgram_connect(struct socket *, struct sockaddr *, int, int); static int unix_seqpacket_sendmsg(struct socket *, struct msghdr *, size_t); @@ -732,6 +734,7 @@ static const struct proto_ops unix_stream_ops = { .shutdown = unix_shutdown, .sendmsg = unix_stream_sendmsg, .recvmsg = unix_stream_recvmsg, + .read_sock = unix_stream_read_sock, .mmap = sock_no_mmap, .sendpage = unix_stream_sendpage, .splice_read = unix_stream_splice_read, @@ -2491,6 +2494,15 @@ static struct sk_buff *manage_oob(struct sk_buff *skb, struct sock *sk, } #endif +static int unix_stream_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor) +{ + if (unlikely(sk->sk_state != TCP_ESTABLISHED)) + return -ENOTCONN; + + return unix_read_sock(sk, desc, recv_actor); +} + static int unix_stream_read_generic(struct unix_stream_read_state *state, bool freezable) { |