diff options
Diffstat (limited to 'sys/kern/uipc_usrreq.c')
| -rw-r--r-- | sys/kern/uipc_usrreq.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c index e1eee36..676029a 100644 --- a/sys/kern/uipc_usrreq.c +++ b/sys/kern/uipc_usrreq.c @@ -892,7 +892,8 @@ uipc_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, from = &sun_noname; so2 = unp2->unp_socket; SOCKBUF_LOCK(&so2->so_rcv); - if (sbappendaddr_locked(&so2->so_rcv, from, m, control)) { + if (sbappendaddr_nospacecheck_locked(&so2->so_rcv, from, m, + control)) { sorwakeup_locked(so2); m = NULL; control = NULL; @@ -977,8 +978,14 @@ uipc_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, const struct sockaddr *from; from = &sun_noname; - if (sbappendaddr_locked(&so2->so_rcv, from, m, - control)) + /* + * Don't check for space available in so2->so_rcv. + * Unix domain sockets only check for space in the + * sending sockbuf, and that check is performed one + * level up the stack. + */ + if (sbappendaddr_nospacecheck_locked(&so2->so_rcv, + from, m, control)) control = NULL; break; } |
