diff options
| author | Henning Brauer <henning@cvs.openbsd.org> | 2003-12-25 13:39:01 +0000 |
|---|---|---|
| committer | Henning Brauer <henning@cvs.openbsd.org> | 2003-12-25 13:39:01 +0000 |
| commit | 135e884f2720442d5646b3080a987f7af228868a (patch) | |
| tree | 7740d4633e818548b083e0240bd8b5c5af832300 /usr.sbin/bgpd/session.c | |
| parent | e35537971479407bf35b7b4f30e00482cb27ccb5 (diff) | |
make the listening socket nonblocking as well.
there's a small probability that poll() announces us a new connection on the
listening socket that vanishes before we can call accept(), and thus accept()
would block.
Diffstat (limited to 'usr.sbin/bgpd/session.c')
| -rw-r--r-- | usr.sbin/bgpd/session.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/usr.sbin/bgpd/session.c b/usr.sbin/bgpd/session.c index 4d7028d8494..4572eba1d32 100644 --- a/usr.sbin/bgpd/session.c +++ b/usr.sbin/bgpd/session.c @@ -1,4 +1,4 @@ -/* $OpenBSD: session.c,v 1.41 2003/12/25 13:17:27 henning Exp $ */ +/* $OpenBSD: session.c,v 1.42 2003/12/25 13:39:00 henning Exp $ */ /* * Copyright (c) 2003 Henning Brauer <henning@openbsd.org> @@ -47,6 +47,11 @@ #define PFD_PIPE_ROUTE 2 #define PFD_PEERS_START 3 +enum blockmodes { + BM_NORMAL, + BM_NONBLOCK +}; + void session_sighdlr(int); int setup_listener(void); void init_conf(struct bgpd_config *); @@ -59,7 +64,7 @@ void session_close_connection(struct peer *); void session_terminate(void); void change_state(struct peer *, enum session_state, enum session_events); int session_setup_socket(struct peer *); -void session_socket_blockmode(int, int); +void session_socket_blockmode(int, enum blockmodes); void session_accept(int); int session_connect(struct peer *); void session_open(struct peer *); @@ -112,6 +117,9 @@ setup_listener(void) close(fd); return (-1); } + + session_socket_blockmode(fd, BM_NONBLOCK); + if (listen(fd, MAX_BACKLOG)) { close(fd); return (-1); @@ -689,7 +697,7 @@ session_connect(struct peer *peer) return (-1); } - session_socket_blockmode(peer->sock, 1); + session_socket_blockmode(peer->sock, BM_NONBLOCK); if ((n = connect(peer->sock, (struct sockaddr *)&peer->conf.remote_addr, sizeof(peer->conf.remote_addr))) == -1) @@ -737,14 +745,14 @@ session_setup_socket(struct peer *p) } void -session_socket_blockmode(int fd, int block) +session_socket_blockmode(int fd, enum blockmodes bm) { int flags; if ((flags = fcntl(fd, F_GETFL, 0)) == -1) fatal("fnctl F_GETFL", errno); - if (block) + if (bm == BM_NONBLOCK) flags |= O_NONBLOCK; else flags &= ~O_NONBLOCK; @@ -761,7 +769,7 @@ session_open(struct peer *peer) u_int16_t len; int errs = 0, n; - session_socket_blockmode(peer->sock, 0); + session_socket_blockmode(peer->sock, BM_NORMAL); len = MSGSIZE_OPEN_MIN; |