diff options
| author | truckman <truckman@FreeBSD.org> | 2002-10-03 02:13:00 +0000 |
|---|---|---|
| committer | truckman <truckman@FreeBSD.org> | 2002-10-03 02:13:00 +0000 |
| commit | da2757cbc5b4e67753f56890f45f5f687cc298ae (patch) | |
| tree | a99f59036961904f8470031c60cd1319fed1c7b9 /sys/net/if_tap.c | |
| parent | d86ebf792e644b705a6451c5a934d6fa545b3086 (diff) | |
| download | FreeBSD-src-da2757cbc5b4e67753f56890f45f5f687cc298ae.zip FreeBSD-src-da2757cbc5b4e67753f56890f45f5f687cc298ae.tar.gz | |
In an SMP environment post-Giant it is no longer safe to blindly
dereference the struct sigio pointer without any locking. Change
fgetown() to take a reference to the pointer instead of a copy of the
pointer and call SIGIO_LOCK() before copying the pointer and
dereferencing it.
Reviewed by: rwatson
Diffstat (limited to 'sys/net/if_tap.c')
| -rw-r--r-- | sys/net/if_tap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/net/if_tap.c b/sys/net/if_tap.c index 0d46639..5cdeaf7 100644 --- a/sys/net/if_tap.c +++ b/sys/net/if_tap.c @@ -709,7 +709,7 @@ tapioctl(dev, cmd, data, flag, td) return (fsetown(*(int *)data, &tp->tap_sigio)); case FIOGETOWN: - *(int *)data = fgetown(tp->tap_sigio); + *(int *)data = fgetown(&tp->tap_sigio); return (0); /* this is deprecated, FIOSETOWN should be used instead */ @@ -718,7 +718,7 @@ tapioctl(dev, cmd, data, flag, td) /* this is deprecated, FIOGETOWN should be used instead */ case TIOCGPGRP: - *(int *)data = -fgetown(tp->tap_sigio); + *(int *)data = -fgetown(&tp->tap_sigio); return (0); /* VMware/VMnet port ioctl's */ |
