that the RFC 793 specification for accepting RST packets should be
following. When followed, this makes one vulnerable to the attacks
described in "slipping in the window", but it may be necessary in
some odd circumstances.
* Reference-count the directory data so that
we don't leak memory.
* Correctly step through the directory records
(skipping unrecognized extensions)
* Use better defaults for file modes
* Sort directory entries by offset of the end of the file
rather than the beginning of the file. This fixes a
lot of "out-of-order" problems with zero-length files,
in particular.
* Style fixes, remove some debug code, add some error messages.
float, double and long double types. No post-increment tests yet.
All tests are skipped if the debug.unaligned_test sysctl variable
cannot be set to 1.
spx_reass() to increase atomicity across multiple operations on the
socket buffer when iterating over the SPX fragment reassembly list
for the ipxpcb, as well a to reduce the number of locking operations.
record loop for ACK'd data, rather than relying on lokcing in
sbdroprecord() and sowwakeup(), reducing the number of lock operations
as well as eliminating a possible race against the head of the send
buffer mbuf chain. Use the _locked variants of sbdroprecord() and
sowwakeup().
the peer address by using M_WAITOK in ipx_setpeeraddr() to prevent
allocation failure. The socket reference used to reach these calls
will prevent the ipxpcb from being released prematurely.
properly handle the case where a connection is disconnected. The
queue(9)-enabled version of this code broke from the inner but not
outer loop, and so potentially frobbed an ipxpcb flag after the ipxpcb
was free'd, which might be picked up later by the malloc debugging
code. Properly break from the loop context and avoid touching the
cb/ipxpcb after free.
This seems to be able to extract a TOC and extract files from
the couple of ISO images I've tested it with.
Treat this as experimental proof-of-concept code for the
moment. There are still a bunch of debug messages (there
are a few oddities in ISO9660 that I haven't yet figured
out how to handle), a lot of bugs to be addressed (this
code leaks memory very badly), and a lot of missing features (no
Rockridge support, in particular). I'd appreciate
feedback from anyone who understands ISO9660 format
better than I do. ;-)
Suggested by: Robert Watson
connection rates, which is causing problems for some users.
To retain the security advantage of random ports and ensure
correct operation for high connection rate users, disable
port randomization during periods of high connection rates.
Whenever the connection rate exceeds randomcps (10 by default),
randomization will be disabled for randomtime (45 by default)
seconds. These thresholds may be tuned via sysctl.
Many thanks to Igor Sysoev, who proved the necessity of this
change and tested many preliminary versions of the patch.
MFC After: 20 seconds
expects a locked route reference. This removes a panic that occurs
when connected ipxpcb is closed and its route free'd, and may have been
present since the route locking took place.
MFC after: 2 weeks
o implement double-extended and single precision loads and stores,
o implement double precision stores,
o replace the machdep.unaligned_print sysctl with debug.unaligned_print
and change the default value to 0,
o replace the machdep.unaligned_sigbus sysctl with debug.unaligned_test,
o Remmove the fillfd() function. The function is trvial enough for
inline assembly.
The debug.unaligned_test sysctl is used to test the emulation of
misaligned loads and stores. When PSR.ac is 0, the CPU will handle
misaligned memory accesses itselfi and we don't get an exception
for it. When PSR.ac is 1, the process needs to be signalled and we
should not emulate. The sysctl takes effect when PSR.ac is 1 and
tells us that we should emulate and not send a signal.
PR: 72268
MFC after: 1 week
