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Fix more races between connect and shutdown

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There were more races that could happen while connecting to a
socket while closing or shutting down the same socket.  This
commit introduces a .closing flag to guard the socket from
being closed twice.
This commit is contained in:
Ondřej Surý
2020-10-29 12:04:00 +01:00
committed by Ondřej Surý
parent 6cfadf9db0
commit ed3ab63f74
4 changed files with 99 additions and 50 deletions
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3
lib/isc/netmgr/netmgr.c
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@@ -1081,6 +1081,7 @@ isc__nmsocket_init(isc_nmsocket_t *sock, isc_nm_t *mgr, isc_nmsocket_type type,
atomic_init(&sock->overlimit, false);
atomic_init(&sock->processing, false);
atomic_init(&sock->readpaused, false);
atomic_init(&sock->closing, false);
sock->magic = NMSOCK_MAGIC;
}
@@ -1094,6 +1095,8 @@ isc__nmsocket_clearcb(isc_nmsocket_t *sock) {
sock->recv_cbarg = NULL;
sock->accept_cb = NULL;
sock->accept_cbarg = NULL;
sock->connect_cb = NULL;
sock->connect_cbarg = NULL;
}
void