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some style input itojun@ tdeval@ toby@
tested, mostly by deraadt, on i386, macppc, vax, sparc64
ok deraadt@ miod@
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bad. suggested by deraadt and naddy
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(FDDI, ieee1394, ...). follows netbsd practice.
2 jasons, dhartmei, thierry ok
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correct. It breaks down if we're trying to jump through a function
pointer. The protection fault trap on i386 must be one of the most
braindead traps ever invented in the history of humankind. It doesn't
give you any information about what went wrong except the instruction
that faulted. Since the problem we're trying to deal with is a
segmentation problem, we don't get the desitination that we want to
jump to, we just get the instruction and we won't add a disassembler
to trap handling just to try to figure out what went wrong.
What we want to do is to handle this as a normal fault to let noexec
accounting in pmap_enter deal with the changes to the code
segment. Unfortunately that's impossible. We don't know the faulting
address, so we need to change how the exec accounting works. Basically
the code segment must already cover the address we want to execute
before we can fault it in.
New scheme:
o Start with conservative code segment.
o If we get a protection fault, go through all mappings in the process
and find the highest executable mapping, fix up the code segment and
record that address. If the code segment didn't change, the protection
fault wasn't fixable - just die.
o If the highest executable mapping is removed, just reset the code
segment to something conservative and let the next protection fault
deal with it. We can't read all the vm mappings of the process from
the pmap because of locking hell.
This should allow floating code segment whenever someone implements that.
Also, fix the pmap_protect function to behave more like the other
pmaps we have and be slightly more agressive to force more proper
protection changes.
ok:ed by various people.
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(from KIU Shueng Chuan)
ok dhartmei
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doesn't).
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Fixes frantzen@'s pentax digital camera.
Suggested by Costa.
ok csapuntz@ frantzen@.
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initial maximum window by the scaling factor. otherwise our view of the
allowable sequence window is too big. back out the scaling factor adjustment
from the max window if the other endpoint rejects window scaling
- window scale the forward ACK skew check
ok dhartmei@
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Accessing p_md members from MI code is not legal.
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{nullfs,umapfs}_v*
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mostly from work by Bill Studenmund - wrstuden at netbsd
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- do not reprogram the colormap to black and white, after programming
the rasops one (oops). This gives us back a black on white display
with colour support.
- if the screen resolution would cause the switch from the prom font to
a reasonably sized wsfont to leave text in the margins, clear the
screen (cut and paste from similar code in vigra.c)
- try and use more symbolic constants rather than magical values all over
the place.
Thanks to millert@ for bringing a sparcbook here.
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first. The least significant portions of the IPv6 address are more
likely to differ than the more significant ones, since in most
situations half the addresses (either the source or the destination)
will be in the local subnet.
ok dhartmei@ henning@
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ok henning@ frantzen@
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Ok drahn@
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number of state table entries grows, so entries time out faster before
the table fills up. Works both globally and per-rule. ok frantzen@
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each side of the TCP connection and prevent it from being reduced
ok pb@ dhartmei@
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iterate boot list at most once
allow kernel names with - in them
complain about option strings that do not start with -
distinguish between short read & bad read
don't quit if a file can be opened but can't be booted
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