diff options
author | tanimura <tanimura@FreeBSD.org> | 2002-04-27 08:24:29 +0000 |
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committer | tanimura <tanimura@FreeBSD.org> | 2002-04-27 08:24:29 +0000 |
commit | dbb4756491715a06ce4578841f6eba43fc62fa70 (patch) | |
tree | 982f8e96f9de9e219deaa4ea138a8334dc086c3c /sys/net/rtsock.c | |
parent | bcaaa89ad095d7a175927dd7e531fa6f278ed18e (diff) | |
download | FreeBSD-src-dbb4756491715a06ce4578841f6eba43fc62fa70.zip FreeBSD-src-dbb4756491715a06ce4578841f6eba43fc62fa70.tar.gz |
Add a global sx sigio_lock to protect the pointer to the sigio object
of a socket. This avoids lock order reversal caused by locking a
process in pgsigio().
sowakeup() and the callers of it (sowwakeup, soisconnected, etc.) now
require sigio_lock to be locked. Provide sowwakeup_locked(),
soisconnected_locked(), and so on in case where we have to modify a
socket and wake up a process atomically.
Diffstat (limited to 'sys/net/rtsock.c')
-rw-r--r-- | sys/net/rtsock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/net/rtsock.c b/sys/net/rtsock.c index ea9f4d3..f49f3df 100644 --- a/sys/net/rtsock.c +++ b/sys/net/rtsock.c @@ -146,8 +146,10 @@ rts_attach(struct socket *so, int proto, struct thread *td) } rp->rcb_faddr = &route_src; route_cb.any_count++; - soisconnected(so); + SIGIO_SLOCK(); + soisconnected_locked(so); so->so_options |= SO_USELOOPBACK; + SIGIO_SUNLOCK(); splx(s); return 0; } |