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PiperOrigin-RevId: 340274194
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PiperOrigin-RevId: 340149214
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In the docker container, the ipv6 loopback address is not set,
and connect("::1") has to return ENEADDRNOTAVAIL in this case.
Without this fix, it returns EHOSTUNREACH.
PiperOrigin-RevId: 340002915
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Read-only directories (e.g. under /sys, /proc) should return EPERM for rename.
PiperOrigin-RevId: 339979022
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The non-errno error was causing panics before.
PiperOrigin-RevId: 339969348
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PiperOrigin-RevId: 339945377
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kernel.copyContext{t} cannot be used outside of t's task goroutine, for three
reasons:
- t.CopyScratchBuffer() is task-goroutine-local.
- Calling t.MemoryManager() without running on t's task goroutine or locking
t.mu violates t.MemoryManager()'s preconditions.
- kernel.copyContext passes t as context.Context to MM IO methods, which is
illegal outside of t's task goroutine (cf. kernel.Task.Value()).
Fix this by splitting AsCopyContext() into CopyContext() (which takes an
explicit context.Context and is usable outside of the task goroutine) and
OwnCopyContext() (which uses t as context.Context, but is only usable by t's
task goroutine).
PiperOrigin-RevId: 339933809
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PiperOrigin-RevId: 339921446
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PiperOrigin-RevId: 339750876
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Fixes #4613.
PiperOrigin-RevId: 339746784
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TCP endpoint unconditionly binds to v4 even when the stack only supports v6.
PiperOrigin-RevId: 339739392
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PiperOrigin-RevId: 339721152
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Refactor TCP handshake code so that when connect is initiated, the initial SYN
is sent before creating a goroutine to handle the rest of the handshake (which
blocks). Similarly, the initial SYN-ACK is sent inline when SYN is received
during accept.
Some additional cleanup is done as well.
Eventually we would like to complete connections in the dispatcher without
requiring a wakeup to complete the handshake. This refactor makes that easier.
Updates #231
PiperOrigin-RevId: 339675182
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Updates #1486.
PiperOrigin-RevId: 339581879
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Also refactor the template and CheckedObject interface to make this cleaner.
Updates #1486.
PiperOrigin-RevId: 339577120
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PiperOrigin-RevId: 339540747
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Updates #1199
PiperOrigin-RevId: 339528827
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Use the stack clock instead. Change NeighborEntry.UpdatedAt to
UpdatedAtNanos.
PiperOrigin-RevId: 339520566
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PiperOrigin-RevId: 339505487
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PiperOrigin-RevId: 339404936
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Signed-off-by: Min Le <lemin.lm@antgroup.com>
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IPv4 options extend the size of the IP header and have a basic known
format. The framework can process that format without needing to know
about every possible option. We can add more code to handle additional
option types as we need them. Bad options or mangled option entries
can result in ICMP Parameter Problem packets. The first types we
support are the Timestamp option and the Record Route option, included
in this change.
The options are processed at several points in the packet flow within
the Network stack, with slightly different requirements. The framework
includes a mechanism to control this at each point. Support has been
added for such points which are only present in upcoming CLs such as
during packet forwarding and fragmentation.
With this change, 'ping -R' and 'ping -T' work against gVisor and Fuchsia.
$ ping -R 192.168.1.2
PING 192.168.1.2 (192.168.1.2) 56(124) bytes of data.
64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=0.990 ms
NOP
RR: 192.168.1.1
192.168.1.2
192.168.1.1
$ ping -T tsprespec 192.168.1.2 192.168.1.1 192.168.1.2
PING 192.168.1.2 (192.168.1.2) 56(124) bytes of data.
64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=1.20 ms
TS: 192.168.1.2 71486821 absolute
192.168.1.1 746
Unit tests included for generic options, Timestamp options
and Record Route options.
PiperOrigin-RevId: 339379076
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PiperOrigin-RevId: 339377254
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This change wakes up any waiters when we receive an ICMP port unreachable
control packet on an UDP socket as well as sets waiter.EventErr in
the result returned by Readiness() when e.lastError is not nil.
The latter is required where an epoll()/poll() is done after the error
is already handled since we will never notify again in such cases.
PiperOrigin-RevId: 339370469
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This PR implements /proc/[pid]/mem for `pkg/sentry/fs` (refer to #2716) and `pkg/sentry/fsimpl`.
@majek
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/4060 from lnsp:proc-pid-mem 2caf9021254646f441be618a9bb5528610e44d43
PiperOrigin-RevId: 339369629
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