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Don't pass size_t arguments to setsockopt(SO_SNDBUF/SO_RCVBUF).
These commands take an int. The tests work by accident on little-endian,
64-bit systems.
PR: 218919
Tested with: qemu-cheri and CheriBSD built for mips64
Reviewed by: asomers, ngie
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
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- Add #ifdef TEST_SEQ_PACKET_SOURCE_ADDRESS` for untestable code
because FreeBSD doesn't have a means to map source addresses for
SEQ_PACKET AF_UNIX sockets (paraphrased). Put pathname variable
under the #ifdef to mute another unused but set variable warning
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
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MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
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MFC after: 1 week
Reported by: Coverity
CID: 1232756
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tests/sys/kern/unix_seqpacket_test.c
* Remove a duplicate error check in mk_pair_of_sockets
* Always close sockets in the success path of ATF test cases. Don't
bother with the error paths, because those are mostly assertions
anyway. Most of these socket leaks were reported by Coverity.
All of them are harmless, because each ATF test case runs in its
own process.
* Fix the len argument to send in shutdown_send and
shutdown_send_sigpipe. The old version was using sizeof a pointer
instead of sizeof the char array. Reported by Coverity.
* Change a few ATF_CHECK to ATF_REQUIRE if the test can't reasonably
continue past a failure.
Reported by: Coverity Scan
CID: 1229995, 1229991, 1229988, 1229994, 1229989, 1229992
CID: 1229993, 1229990, 1229984, 1229967, 1230005, 1229977
CID: 1229966, 1230004, 1229976
MFC after: 1 week
Sponsored by: Spectra Logic
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This fixes the build under powerpc64 where gcc complains about a mismatch
between a %zd printf formatter and an int variable passed to it.
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mechanism, based on the new SB_STOP sockbuf flag. The old hack dynamically
changed the sending sockbuf's high water mark whenever adding or removing
data from the receiving sockbuf. It worked for stream sockets, but it never
worked for SOCK_SEQPACKET sockets because of their atomic nature. If the
sockbuf was partially full, it might return EMSGSIZE instead of blocking.
The new solution is based on DragonFlyBSD's fix from commit
3a6117bbe0ed6a87605c1e43e12a1438d8844380 on 2008-05-27. It adds an SB_STOP
flag to sockbufs. Whenever uipc_send surpasses the socket's size limit, it
sets SB_STOP on the sending sockbuf. sbspace() will then return 0 for that
sockbuf, causing sosend_generic and friends to block. uipc_rcvd will
likewise clear SB_STOP. There are two fringe benefits: uipc_{send,rcvd} no
longer need to call chgsbsize() on every send and receive because they don't
change the sockbuf's high water mark. Also, uipc_sense no longer needs to
acquire the UIPC linkage lock, because it's simpler to compute the
st_blksizes.
There is one drawback: since sbspace() will only ever return 0 or the
maximum, sosend_generic will allow the sockbuf to exceed its nominal maximum
size by at most one packet of size less than the max. I don't think that's
a serious problem. In fact, I'm not even positive that FreeBSD guarantees a
socket will always stay within its nominal size limit.
sys/sys/sockbuf.h
Add the SB_STOP flag and adjust sbspace()
sys/sys/unpcb.h
Delete the obsolete unp_cc and unp_mbcnt fields from struct unpcb.
sys/kern/uipc_usrreq.c
Adjust uipc_rcvd, uipc_send, and uipc_sense to use the SB_STOP
backpressure mechanism. Removing obsolete unpcb fields from
db_show_unpcb.
tests/sys/kern/unix_seqpacket_test.c
Clear expected failures from ATF.
Obtained from: DragonFly BSD
PR: kern/185812
Reviewed by: silence from freebsd-net@ and rwatson@
MFC after: 3 weeks
Sponsored by: Spectra Logic Corporation
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Set WARNS=5 for all files in this directory
kern/unix_seqpacket_test.c
Fix compiler warnings. Most were benign, but rcvbuf_oversized
wasn't working as intended because I forgot to set the buffer sizes.
MFC after: 2 weeks
Reported by: pho
Sponsored by: Spectra Logic Corporation
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buffers drop packets". It was caused by a check for the space available
in a sockbuf, but it was checking the wrong sockbuf.
sys/sys/sockbuf.h
sys/kern/uipc_sockbuf.c
Add sbappendaddr_nospacecheck_locked(), which is just like
sbappendaddr_locked but doesn't validate the receiving socket's
space. Factor out common code into sbappendaddr_locked_internal().
We shouldn't simply make sbappendaddr_locked check the space and
then call sbappendaddr_nospacecheck_locked, because that would cause
the O(n) function m_length to be called twice.
sys/kern/uipc_usrreq.c
Use sbappendaddr_nospacecheck_locked for SOCK_SEQPACKET sockets,
because the receiving sockbuf's size limit is irrelevant.
tests/sys/kern/unix_seqpacket_test.c
Now that 185813 is fixed, pipe_128k_8k fails intermittently due to
185812. Make it fail every time by adding a usleep after starting
the writer thread and before starting the reader thread in
test_pipe. That gives the writer time to fill up its send buffer.
Also, clear the expected failure message due to 185813. It actually
said "185812", but that was a typo.
PR: kern/185813
Reviewed by: silence from freebsd-net@ and rwatson@
MFC after: 3 weeks
Sponsored by: Spectra Logic Corporation
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blocking sockets. The error was not exposed as long as the kernel
suffered from PR kern/185812. Now corrected, these tests pass on
DragonFlyBSD 3.6.0.
PR: kern/185812
Sponsored by: Spectra Logic Corporation
MFC after: 2 weeks
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were a little broken and not automatable, with unix_seqpacket_test.
It's coverage is a superset of the old tests and it uses ATF. It
includes test cases for bugs kern/185813 and kern/185812.
PR: kern/185812
PR: kern/185813
Sponsored by: Spectra Logic
MFC after: 2 weeks
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