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| /freebsd-10.1-release/sys/kern/ | ||
| H A D | kern_time.c | diff 45433 Wed Apr 07 14:36:56 MDT 1999 nsayer If securelevel>1, allow the clock to be adjusted negatively only up to 1 second prior to the highest the clock has run so far. This allows time adjusters like xntpd to do their work, but the worst a miscreant can do is "freeze" the clock, not go back in time. We still need to decide on an algorithm to clamp positive adjustments. As it stands, it is possible to achieve arbitrary negative adjustments by "wrapping" time around. PR: 10361 |
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