diff options
| author | truckman <truckman@FreeBSD.org> | 2002-07-28 19:59:31 +0000 |
|---|---|---|
| committer | truckman <truckman@FreeBSD.org> | 2002-07-28 19:59:31 +0000 |
| commit | b1555a27432152cc7817d0c592bbcebf95fdfd19 (patch) | |
| tree | 6dda6f0898c9f15fca929e63e72b3882862e67e1 /sys/netinet/tcp_subr.c | |
| parent | 5bd1876975f34760da2eea4bfce9c738127d36ca (diff) | |
| download | FreeBSD-src-b1555a27432152cc7817d0c592bbcebf95fdfd19.zip FreeBSD-src-b1555a27432152cc7817d0c592bbcebf95fdfd19.tar.gz | |
Wire the sysctl output buffer before grabbing any locks to prevent
SYSCTL_OUT() from blocking while locks are held. This should
only be done when it would be inconvenient to make a temporary copy of
the data and defer calling SYSCTL_OUT() until after the locks are
released.
Diffstat (limited to 'sys/netinet/tcp_subr.c')
| -rw-r--r-- | sys/netinet/tcp_subr.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c index c2799d5..0c4b385 100644 --- a/sys/netinet/tcp_subr.c +++ b/sys/netinet/tcp_subr.c @@ -841,6 +841,9 @@ tcp_pcblist(SYSCTL_HANDLER_ARGS) INP_INFO_RUNLOCK(&tcbinfo); splx(s); + sysctl_wire_old_buffer(req, 2 * (sizeof xig) + + n * sizeof(struct xtcpcb)); + xig.xig_len = sizeof xig; xig.xig_count = n; xig.xig_gen = gencnt; |
