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authorKarsten Graul <kgraul@linux.ibm.com>2019-01-30 20:51:04 +0300
committerDavid S. Miller <davem@davemloft.net>2019-02-02 01:45:45 +0300
commit51c5aba3b672c4285fca052817f34b22dc79dda7 (patch)
tree7a53022bef0acdf4f2d067a9140eb9a3bbaea271 /net/smc
parent6889b36da78a21a312d8b462c1fa25a03c2ff192 (diff)
downloadlinux-51c5aba3b672c4285fca052817f34b22dc79dda7.tar.xz
net/smc: recvmsg and splice_read should return 0 after shutdown
When a socket was connected and is now shut down for read, return 0 to indicate end of data in recvmsg and splice_read (like TCP) and do not return ENOTCONN. This behavior is required by the socket api. Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
-rw-r--r--net/smc/af_smc.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index c4e56602e0c6..b04a813fc865 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1505,6 +1505,11 @@ static int smc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
smc = smc_sk(sk);
lock_sock(sk);
+ if (sk->sk_state == SMC_CLOSED && (sk->sk_shutdown & RCV_SHUTDOWN)) {
+ /* socket was connected before, no more data to read */
+ rc = 0;
+ goto out;
+ }
if ((sk->sk_state == SMC_INIT) ||
(sk->sk_state == SMC_LISTEN) ||
(sk->sk_state == SMC_CLOSED))
@@ -1840,7 +1845,11 @@ static ssize_t smc_splice_read(struct socket *sock, loff_t *ppos,
smc = smc_sk(sk);
lock_sock(sk);
-
+ if (sk->sk_state == SMC_CLOSED && (sk->sk_shutdown & RCV_SHUTDOWN)) {
+ /* socket was connected before, no more data to read */
+ rc = 0;
+ goto out;
+ }
if (sk->sk_state == SMC_INIT ||
sk->sk_state == SMC_LISTEN ||
sk->sk_state == SMC_CLOSED)