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Add a new CancellableTimer type to encapsulate the work of safely stopping
timers when it fires at the same time some "related work" is being handled. The
term "related work" is some work that needs to be done while having obtained
some common lock (L).
Example: Say we have an invalidation timer that may be extended or cancelled by
some event. Creating a normal timer and simply cancelling may not be sufficient
as the timer may have already fired when the event handler attemps to cancel it.
Even if the timer and event handler obtains L before doing work, once the event
handler releases L, the timer will eventually obtain L and do some unwanted
work.
To prevent the timer from doing unwanted work, it checks if it should early
return instead of doing the normal work after obtaining L. When stopping the
timer callers must have L locked so the timer can be safely informed that it
should early return.
Test: Tests that CancellableTimer fires and resets properly. Test to make sure
the timer fn is not called after being stopped within the lock L.
PiperOrigin-RevId: 288806984
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This change calls a new Truncate method on the EndpointReader in RecvMsg for
both netlink and unix sockets. This allows readers such as sockets to peek at
the length of data without actually reading it to a buffer.
Fixes #993 #1240
PiperOrigin-RevId: 288800167
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PiperOrigin-RevId: 288799694
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Panic found by syzakller.
PiperOrigin-RevId: 288799046
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For everyone's joy, this is a tool that reopens issues that
have been closed, but are still referenced by TODOs in the
code. The idea is to run it in Kokoro nightly. Kokoro changes
are coming up next.
PiperOrigin-RevId: 288789560
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...and port V6OnlyOption to it.
PiperOrigin-RevId: 288789451
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PiperOrigin-RevId: 288779416
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PiperOrigin-RevId: 288772878
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PiperOrigin-RevId: 288767927
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PiperOrigin-RevId: 288743614
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Updates #1195
PiperOrigin-RevId: 288725745
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PacketLooping is already a member on the passed Route.
PiperOrigin-RevId: 288721500
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...enabling us to remove the "CreateNamedLoopbackNIC" variant of
CreateNIC and all the plumbing to connect it through to where the value
is read in FindRoute.
PiperOrigin-RevId: 288713093
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PiperOrigin-RevId: 288642552
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The write tests are fitted to Linux-specific behavior, but it is not
well-specified. Tweak the tests to allow for both acceptable outcomes.
PiperOrigin-RevId: 288606386
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Support deprecating network endpoints on a NIC. If an endpoint is deprecated, it
should not be used for new connections unless a more preferred endpoint is not
available, or unless the deprecated endpoint was explicitly requested.
Test: Test that deprecated endpoints are only returned when more preferred
endpoints are not available and SLAAC addresses are deprecated after its
preferred lifetime
PiperOrigin-RevId: 288562705
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Test: Test that an IPv6 link-local address is not auto-generated for loopback
NICs, even when it is enabled for non-loopback NICS.
PiperOrigin-RevId: 288519591
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PiperOrigin-RevId: 288402480
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Pass the NIC-internal name to the NIC name function when generating opaque IIDs
so implementations can use the name that was provided when the NIC was created.
Previously, explicit NICID to NIC name resolution was required from the netstack
integrator.
Tests: Test that the name provided when creating a NIC is passed to the NIC name
function when generating opaque IIDs.
PiperOrigin-RevId: 288395359
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Right now, we need to call ptrace(PTRACE_SYSCALL) and wait() twice to execute
one system call in a stub process. With these changes, we will need to call
ptrace + wait only once.
In addition, this allows to workaround the kernel bug when a stub process
doesn't stop on syscall-exit-stop and starts executing the next system call.
Reported-by: syzbot+37143cafa8dc3b5008ee@syzkaller.appspotmail.com
PiperOrigin-RevId: 288393029
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- Renamed memfs to tmpfs.
- Copied fileRangeSet bits from fs/fsutil/ to fsimpl/tmpfs/
- Changed tmpfs to be backed by filemem instead of byte slice.
- regularFileReadWriter uses a sync.Pool, similar to gofer client.
PiperOrigin-RevId: 288356380
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PiperOrigin-RevId: 288342928
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Currently, shm.Registry.FindByID will return Shm instances without taking an
additional reference on them, making it possible for them to disappear.
More explicitly handle references. All callers hold a reference for the
duration that they hold the instance. Registry.shms may transitively hold Shms
with no references, so it must TryIncRef to determine if they are still valid.
PiperOrigin-RevId: 288314529
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Support using opaque interface identifiers when generating IPv6 addresses via
SLAAC when configured to do so.
Note, this change does not handle retries in response to DAD conflicts yet.
That will also come in a later change.
Test: Test that when SLAAC addresses are generated, they use opaque interface
identifiers when configured to do so.
PiperOrigin-RevId: 288078605
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PiperOrigin-RevId: 288075400
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