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PiperOrigin-RevId: 204362791
Change-Id: If85ea7442741e299f0d7cddbc3d6b415e285da81
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PiperOrigin-RevId: 204323728
Change-Id: I1ff9aa062ffa12583b2e38ec94c87db7a3711971
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PiperOrigin-RevId: 204188763
Change-Id: I5596ab7abb3ec9e210a7f57b3fc420e836fa43f3
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PiperOrigin-RevId: 204162313
Change-Id: Ib0593dde88ac33e222c12d0dca6733ef1f1035dc
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Otherwise required and optional can be empty or have negative length.
PiperOrigin-RevId: 204007079
Change-Id: I59e472a87a8caac11ffb9a914b8d79bf0cd70995
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PiperOrigin-RevId: 203958972
Change-Id: Ia6fe16547539296d48e2c6731edacdd96bd6e93c
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PiperOrigin-RevId: 203849534
Change-Id: I4d81513bfd32e0b7fc40c8a4c194eba7abc35a83
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Multiple whitespace characters are allowed. This fixes Ubuntu's
/usr/sbin/invoke-rc.d, which has trailing whitespace after the
interpreter which we were treating as an arg.
PiperOrigin-RevId: 203802278
Change-Id: I0a6cdb0af4b139cf8abb22fa70351fe3697a5c6b
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PiperOrigin-RevId: 203180463
Change-Id: Ief50988c1c028f81ec07a26e704d893e86985bf0
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80bdf8a4068de3ac4a73b6b61a0cdcfe3e3571af accidentally moved vdso into an
inner scope, never assigning the vdso variable passed to the Kernel and
thus skipping VDSO mappings.
Fix this and remove the ability for loadVDSO to skip VDSO mappings,
since tests that do so are gone.
PiperOrigin-RevId: 203169135
Change-Id: Ifd8cadcbaf82f959223c501edcc4d83d05327eba
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The path in execve(2), interpreter script, and ELF interpreter may all
be no more than a NUL-byte. Handle each of those cases.
PiperOrigin-RevId: 203155745
Change-Id: I1c8b1b387924b23b2cf942341dfc76c9003da959
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PiperOrigin-RevId: 203041657
Change-Id: I120783d91712818e600505454c9276f8d9877f37
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Updated how restoring occurs through boot.go with a separate Restore function.
This prevents a new process and new mounts from being created.
Added tests to ensure the container is restored.
Registered checkpoint and restore commands so they can be used.
Docker support for these commands is still limited.
Working on #80.
PiperOrigin-RevId: 202710950
Change-Id: I2b893ceaef6b9442b1ce3743bd112383cb92af0c
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PiperOrigin-RevId: 202671065
Change-Id: I248b74544d47ddde9cd59d89aa6ccb7dad2b6f89
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PiperOrigin-RevId: 202562686
Change-Id: I0f5be7cc9098e86fa31d016251c127cb91084b05
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PiperOrigin-RevId: 202528335
Change-Id: Ic32312cf4337bcb40a7155cb2174e5cd89a280f7
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PiperOrigin-RevId: 202371908
Change-Id: I72603b1d321878cae6404987c49e64732b676331
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CheckIORange is analagous to Linux's access_ok() method, which is checked when
copying in IOVecs in both lib/iov_iter.c:import_single_range() and
lib/iov_iter.c:import_iovec() => fs/read_write.c:rw_copy_check_uvector().
gVisor copies in IOVecs via Task.SingleIOSequence() and Task.CopyInIovecs().
We were checking the address range bounds, but not whether the address is
valid. To conform with linux, we should also check that the address is valid.
For usual preadv/pwritev syscalls, the effect of this change is not noticeable,
since we find out that the address is invalid before the syscall completes.
For vectorized async-IO operations, however, this change is necessary because
Linux returns EFAULT when the operation is submitted, but before it executes.
Thus, we must validate the iovecs when copying them in.
PiperOrigin-RevId: 202370092
Change-Id: I8759a63ccf7e6b90d90d30f78ab8935a0fcf4936
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PiperOrigin-RevId: 202361912
Change-Id: I1d0ee529073954d467b870872f494cebbf8ea61a
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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: 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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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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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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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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