diff options
| author | Luiz Augusto von Dentz | 2022-08-18 14:31:42 -0700 |
|---|---|---|
| committer | Luiz Augusto von Dentz | 2022-08-25 16:26:17 -0700 |
| commit | c572909376673d8c126ae2ee53ba754ff9327d98 (patch) | |
| tree | 285df5ec3a75b24b862d151400c3e7c1d1d138ae | |
| parent | 3cfbc6ac22d62d0a06be9ce2996ba9fed75436cd (diff) | |
Bluetooth: ISO: Fix not handling shutdown condition
In order to properly handle shutdown syscall the code shall not assume
that the how argument is always SHUT_RDWR resulting in SHUTDOWN_MASK as
that would result in poll to immediately report EPOLLHUP instead of
properly waiting for disconnect_cfm (Disconnect Complete) which is
rather important for the likes of BAP as the CIG may need to be
reprogrammed.
Fixes: ccf74f2390d6 ("Bluetooth: Add BTPROTO_ISO socket type")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
| -rw-r--r-- | net/bluetooth/iso.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c index ced8ad4fed4f..613039ba5dbf 100644 --- a/net/bluetooth/iso.c +++ b/net/bluetooth/iso.c @@ -1309,7 +1309,7 @@ static int iso_sock_shutdown(struct socket *sock, int how) struct sock *sk = sock->sk; int err = 0; - BT_DBG("sock %p, sk %p", sock, sk); + BT_DBG("sock %p, sk %p, how %d", sock, sk, how); if (!sk) return 0; @@ -1317,17 +1317,32 @@ static int iso_sock_shutdown(struct socket *sock, int how) sock_hold(sk); lock_sock(sk); - if (!sk->sk_shutdown) { - sk->sk_shutdown = SHUTDOWN_MASK; - iso_sock_clear_timer(sk); - __iso_sock_close(sk); - - if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && - !(current->flags & PF_EXITING)) - err = bt_sock_wait_state(sk, BT_CLOSED, - sk->sk_lingertime); + switch (how) { + case SHUT_RD: + if (sk->sk_shutdown & RCV_SHUTDOWN) + goto unlock; + sk->sk_shutdown |= RCV_SHUTDOWN; + break; + case SHUT_WR: + if (sk->sk_shutdown & SEND_SHUTDOWN) + goto unlock; + sk->sk_shutdown |= SEND_SHUTDOWN; + break; + case SHUT_RDWR: + if (sk->sk_shutdown & SHUTDOWN_MASK) + goto unlock; + sk->sk_shutdown |= SHUTDOWN_MASK; + break; } + iso_sock_clear_timer(sk); + __iso_sock_close(sk); + + if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && + !(current->flags & PF_EXITING)) + err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); + +unlock: release_sock(sk); sock_put(sk); |