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author | rwatson <rwatson@FreeBSD.org> | 2002-11-13 15:47:09 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2002-11-13 15:47:09 +0000 |
commit | 9dde910437d4d4f8c5ef8c41b064eab5f4f26383 (patch) | |
tree | 042d8676fe6224ce7990e86d7e4a34cc70720774 /sys/modules/cam | |
parent | 06657e3da637adc5c3bf0ec833d3a117f55cf08b (diff) | |
download | FreeBSD-src-9dde910437d4d4f8c5ef8c41b064eab5f4f26383.zip FreeBSD-src-9dde910437d4d4f8c5ef8c41b064eab5f4f26383.tar.gz |
Introduce a condition variable to avoid returning EBUSY when
the MAC policy list is busy during a load or unload attempt.
We assert no locks held during the cv wait, meaning we should
be fairly deadlock-safe. Because of the cv model and busy
count, it's possible for a cv waiter waiting for exclusive
access to the policy list to be starved by active and
long-lived access control/labeling events. For now, we
accept that as a necessary tradeoff.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
Diffstat (limited to 'sys/modules/cam')
0 files changed, 0 insertions, 0 deletions