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PiperOrigin-RevId: 202236006
Change-Id: I4ea964a70fc49e8b51c9da27d77301c4eadaae71
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If the child stubs are killed by any unmaskable signal (e.g. SIGKILL), then
the parent process will similarly be killed, resulting in the death of all
other stubs.
The effect of this is that if the OOM killer selects and kills a stub, the
effect is the same as though the OOM killer selected and killed the sentry.
PiperOrigin-RevId: 202219984
Change-Id: I0b638ce7e59e0a0f4d5cde12a7d05242673049d7
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PiperOrigin-RevId: 202180487
Change-Id: I95cce41a4842ab731a4821b387b32008bfbdcb08
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PiperOrigin-RevId: 202175558
Change-Id: I0113cb9a90d7a0cd7964bf43eef67f70c92d9589
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PiperOrigin-RevId: 202163895
Change-Id: Ib9942fcff80c0834216f4f10780662bef5b52270
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PiperOrigin-RevId: 202151720
Change-Id: I0491172c436bbb32b977f557953ba0bc41cfe299
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The arguments are backwards from the message.
PiperOrigin-RevId: 202054887
Change-Id: Id5750a84ca091f8b8fbe15be8c648d4fa3e31eb2
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PiperOrigin-RevId: 202043776
Change-Id: I4373abbcf735dc1cf4bebbbbb0c7124df36e9e78
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PiperOrigin-RevId: 202043090
Change-Id: I3c47fb3413ca8615d50d8a0503d72fcce9b09421
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PiperOrigin-RevId: 202038397
Change-Id: I074d525f2e2d9bcd43b247b62f86f9129c101b78
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IsChrooted still has the opportunity to race with another thread
entering the FSContext into a chroot, but that is unchanged (and
fine, AFAIK).
PiperOrigin-RevId: 202029117
Change-Id: I38bce763b3a7715fa6ae98aa200a19d51a0235f1
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The interfaces and their addresses are already available via
the stack Intefaces and InterfaceAddrs.
Also add some tests as we had no tests around SIOCGIFCONF. I also added the socket_netgofer lifecycle for IOCTL tests.
PiperOrigin-RevId: 201744863
Change-Id: Ie0a285a2a2f859fa0cafada13201d5941b95499a
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PiperOrigin-RevId: 201738936
Change-Id: Ib75136415e28e8df0c742acd6b9512d4809fe3a8
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PiperOrigin-RevId: 201729703
Change-Id: I486900b0c6ec59533b88da225a5829c474e35a70
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The shutdown behavior where we return EAGAIN for sockets
which are non-blocking is only correct for packet based sockets.
SOCK_STREAM sockets should return EOF.
PiperOrigin-RevId: 201703055
Change-Id: I20b25ceca7286c37766936475855959706fc5397
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PiperOrigin-RevId: 201596247
Change-Id: Id22f47b2cdcbe14aa0d930f7807ba75f91a56724
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SendExternalSignal is no longer called before CreateProcess, so it can
enforce this simplified precondition.
StartForwarding, and after Kernel.Start.
PiperOrigin-RevId: 201591170
Change-Id: Ib7022ef7895612d7d82a00942ab59fa433c4d6e9
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SIGUSR2 was being masked out to be used as a way to dump sentry
stacks. This could cause compatibility problems in cases anyone
uses SIGUSR2 to communicate with the container init process.
PiperOrigin-RevId: 201575374
Change-Id: I312246e828f38ad059139bb45b8addc2ed055d74
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FIOASYNC and friends are used to send signals when a file is ready for IO.
This may or may not be needed by Nginx. While Nginx does use it, it is unclear
if the code that uses it has any effect.
PiperOrigin-RevId: 201550828
Change-Id: I7ba05a7db4eb2dfffde11e9bd9a35b65b98d7f50
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It prints sandbox stacks to the log to help debug stuckness. I expect
that many more options will be added in the future.
PiperOrigin-RevId: 201405931
Change-Id: I87e560800cd5a5a7b210dc25a5661363c8c3a16e
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PiperOrigin-RevId: 201401727
Change-Id: Ia5589882ba58a00efb522ab372e206b7e8e62aee
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Almost all of the hundreds of pending signal queues are empty upon save.
PiperOrigin-RevId: 201380318
Change-Id: I40747072435299de681d646e0862efac0637e172
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After shutdown(SHUT_RD) calls to recv /w MSG_DONTWAIT or with
O_NONBLOCK should result in a EAGAIN and not 0. Blocking sockets
should return 0 as they would have otherwise blocked indefinitely.
PiperOrigin-RevId: 201271123
Change-Id: If589b69c17fa5b9ff05bcf9e44024da9588c8876
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PiperOrigin-RevId: 201269072
Change-Id: Ia542c5a42b5b5d21c1104a003ddff5279644d309
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Instead, CPUs will be created dynamically. We also allow a relatively
efficient mechanism for stealing and notifying when a vCPU becomes
available via unlock.
Since the number of vCPUs is no longer fixed at machine creation time,
we make the dirtySet packing more efficient. This has the pleasant side
effect of cutting out the unsafe address space code.
PiperOrigin-RevId: 201266691
Change-Id: I275c73525a4f38e3714b9ac0fd88731c26adfe66
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No need to save thousands of zerovalue buckets.
PiperOrigin-RevId: 201258598
Change-Id: I5d3ea7b6a5345117ab4f610332d5288ca550be33
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Resume checks the status of the container and unpauses the kernel
if its status is paused. Otherwise nothing happens.
Tests were added to ensure that the process is in the correct state
after various commands.
PiperOrigin-RevId: 201251234
Change-Id: Ifd11b336c33b654fea6238738f864fcf2bf81e19
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Correct a data race in rpcinet where a shutdown and recvmsg can
race around shutown flags.
PiperOrigin-RevId: 201238366
Change-Id: I5eb06df4a2b4eba331eeb5de19076213081d581f
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The new policy is identical to FSCACHE (which caches everything in memory), but
it also flushes writes to the backing fs agent immediately.
All gofer cache policy decisions have been moved into the cachePolicy type.
Previously they were sprinkled around the codebase.
There are many different things that we cache (page cache, negative dirents,
dirent LRU, unstable attrs, readdir results....), and I don't think we should
have individual flags to control each of these. Instead, we should have a few
high-level cache policies that are consistent and useful to users. This
refactoring makes it easy to add more such policies.
PiperOrigin-RevId: 201206937
Change-Id: I6e225c382b2e5e1b0ad4ccf8ca229873f4cd389d
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PiperOrigin-RevId: 201205733
Change-Id: I300307b0668989ba7776ab9e3faee71efdd33f46
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Because rpcinet will emulate a blocking socket backed by an rpc based
non-blocking socket. In the event of a shutdown(SHUT_RD) followed by a
read a non-blocking socket is allowed to return an EWOULDBLOCK however
since a blocking socket knows it cannot receive anymore data it would
block indefinitely and in this situation linux returns 0. We have to
track this on the rpcinet sentry side so we can emulate that behavior
because the remote side has no way to know if the socket is actually
blocking within the sentry.
PiperOrigin-RevId: 201201618
Change-Id: I4ac3a7b74b5dae471ab97c2e7d33b83f425aedac
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Add support for control messages, but at this time the only
control message that the sentry will support here is SO_TIMESTAMP.
PiperOrigin-RevId: 200922230
Change-Id: I63a852d9305255625d9df1d989bd46a66e93c446
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PiperOrigin-RevId: 200784607
Change-Id: I39aa6ee632936dcbb00fc298adccffa606e9f4c0
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PiperOrigin-RevId: 200765756
Change-Id: Ie4266f32e4e977df3925eb29f3fbb756e0337606
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PiperOrigin-RevId: 200759323
Change-Id: I683b2edcc2188304c4ca563e46af457e23625905
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There are circumstances under which the redpill call will not generate
the appropriate action and notification. Replace this call with an
explicit notification, which is guaranteed to transition as well as
perform the futex wake.
PiperOrigin-RevId: 200726934
Change-Id: Ie19e008a6007692dd7335a31a8b59f0af6e54aaa
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Closes #68
PiperOrigin-RevId: 200725401
Change-Id: I4827009b8aee89d22887c3af67291ccf7058d420
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PiperOrigin-RevId: 200590832
Change-Id: I35b817ecccc9414a742dee4815dfc67d0c7d0496
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PiperOrigin-RevId: 200496070
Change-Id: I33adb717c44e5b4bcadece882be3ab1ee3920556
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PiperOrigin-RevId: 200472634
Change-Id: I3f0fb9e3b2f8616e6aa1569188258f330bf1ed31
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PiperOrigin-RevId: 200439846
Change-Id: I9970fe0716cb02f0f41b754891d55db7e0729f56
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Boot loader tries to stat mount to determine whether it's a file or not. This
may file if the sandbox process doesn't have access to the file. Instead, add
overlay on top of file, which is better anyway since we don't want to propagate
changes to the host.
PiperOrigin-RevId: 200411261
Change-Id: I14222410e8bc00ed037b779a1883d503843ffebb
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PiperOrigin-RevId: 200410220
Change-Id: I6a8745e33be949e335719083501f18b24f6ba471
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PiperOrigin-RevId: 200408305
Change-Id: I676ee49ec77697105723577928c7f82088cd378e
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PiperOrigin-RevId: 200306715
Change-Id: I7c80059c77ebd3d9a5d7d48b05c8e7a597f10850
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Rpcinet already inherits socket.ReceiveTimeout; however, it's
never set on setsockopt(2). The value is currently forwarded
as an RPC and ignored as all sockets will be non-blocking
on the RPC side.
PiperOrigin-RevId: 200299260
Change-Id: I6c610ea22c808ff6420c63759dccfaeab17959dd
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This is the first iteration of checkpoint that actually saves to a file.
Tests for checkpoint are included.
Ran into an issue when private unix sockets are enabled. An error message
was added for this case and the mutex state was set.
PiperOrigin-RevId: 200269470
Change-Id: I28d29a9f92c44bf73dc4a4b12ae0509ee4070e93
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PiperOrigin-RevId: 200261995
Change-Id: I7e460b18ceab2c23096bdeb7416159d6e774aaf7
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- Remove unused methods.
- Provide declaration for asm function.
PiperOrigin-RevId: 200146850
Change-Id: Ic455c96ffe0d2e78ef15f824eb65d7de705b054a
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In order to minimize the likelihood of exit during page table
modifications, make the full set of page table functions split-safe.
This is not strictly necessary (and you may still incur splits due to
allocations from the allocator pool) but should make retries a very rare
occurance.
PiperOrigin-RevId: 200146688
Change-Id: I8fa36aa16b807beda2f0b057be60038258e8d597
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