diff options
| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2020-09-05 09:14:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-26 19:05:24 +0300 |
| commit | d8e7be19d2bddd97c91e678cdd495f41ed049f4a (patch) | |
| tree | be655fc4301d8dcd30cd897d85bed21a4966209b /net | |
| parent | 7ada162ea056a506bbb11c4f29c574e3da5d1490 (diff) | |
| download | linux-d8e7be19d2bddd97c91e678cdd495f41ed049f4a.tar.xz | |
tipc: fix shutdown() of connection oriented socket
[ Upstream commit a4b5cc9e10803ecba64a7d54c0f47e4564b4a980 ]
I confirmed that the problem fixed by commit 2a63866c8b51a3f7 ("tipc: fix
shutdown() of connectionless socket") also applies to stream socket.
----------
#include <sys/socket.h>
#include <unistd.h>
#include <sys/wait.h>
int main(int argc, char *argv[])
{
int fds[2] = { -1, -1 };
socketpair(PF_TIPC, SOCK_STREAM /* or SOCK_DGRAM */, 0, fds);
if (fork() == 0)
_exit(read(fds[0], NULL, 1));
shutdown(fds[0], SHUT_RDWR); /* This must make read() return. */
wait(NULL); /* To be woken up by _exit(). */
return 0;
}
----------
Since shutdown(SHUT_RDWR) should affect all processes sharing that socket,
unconditionally setting sk->sk_shutdown to SHUTDOWN_MASK will be the right
behavior.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/tipc/socket.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 79cc84393f93..59c9e592b0a2 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -2773,10 +2773,7 @@ static int tipc_shutdown(struct socket *sock, int how) trace_tipc_sk_shutdown(sk, NULL, TIPC_DUMP_ALL, " "); __tipc_shutdown(sock, TIPC_CONN_SHUTDOWN); - if (tipc_sk_type_connectionless(sk)) - sk->sk_shutdown = SHUTDOWN_MASK; - else - sk->sk_shutdown = SEND_SHUTDOWN; + sk->sk_shutdown = SHUTDOWN_MASK; if (sk->sk_state == TIPC_DISCONNECTING) { /* Discard any unreceived messages */ |