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Updates #267
PiperOrigin-RevId: 278402684
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PiperOrigin-RevId: 278032567
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Since we only supporting sending messages from the kernel, the peer is always
the kernel, simplifying handling.
There are currently no known users of SO_PASSCRED that would actually receive
messages from gVisor, but adding full support is barely more work than stubbing
out fake support.
Updates #1117
Fixes #1119
PiperOrigin-RevId: 277981465
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PiperOrigin-RevId: 277971910
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The watchdog currently can find stuck tasks, but has no way to tell if the
sandbox is stuck before the application starts executing.
This CL adds a startup timeout and action to the watchdog. If Start() is not
called before the given timeout (if non-zero), then the watchdog will take the
action.
PiperOrigin-RevId: 277970577
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This gets quite spammy, especially in tests.
PiperOrigin-RevId: 277970468
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PiperOrigin-RevId: 277965624
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PiperOrigin-RevId: 277840416
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Adds a systemd-cgroup flag option that prints an error letting the user know
that systemd cgroups are not supported and points them to the relevant issue.
Issue #193
PiperOrigin-RevId: 277837162
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Also, construct the README directly so that edits can be made.
PiperOrigin-RevId: 277782095
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sigtimedwait is used to check pending signals and
it should not block.
PiperOrigin-RevId: 277777269
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Turns out we use $RUNTIME in scripts/common.sh to give a name to the runsc
runtime used by the tests.
PiperOrigin-RevId: 277764383
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PiperOrigin-RevId: 277623766
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When VectorisedViews were passed up the stack from packet_dispatchers, we were
passing a sub-slice of the dispatcher's views fields. The dispatchers then
immediately set those views to nil.
This wasn't caught before because every implementer copied the data in these
views before returning.
PiperOrigin-RevId: 277615351
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PiperOrigin-RevId: 277607217
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On Arm platform, "setMemoryRegion" has extra permission checks.
In virt/kvm/arm/mmu.c: kvm_arch_prepare_memory_region()
....
if (writable && !(vma->vm_flags & VM_WRITE)) {
ret = -EPERM;
break;
}
....
So, for Arm platform, the "flags" for kvm_memory_region is required.
And on x86 platform, the "flags" can be always set as '0'.
Signed-off-by: Bin Lu <bin.lu@arm.com>
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/810 from lubinszARM:pr_setregion 8c99b19cfb0c859c6630a1cfff951db65fcf87ac
PiperOrigin-RevId: 277602603
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Sandbox root dir was not being saved with the Container state,
so it would point to the wrong directory location when attempting
to lock the sandbox. This led to race conditions saving and
loading container state. Fixing it, led to multiple deadlocks.
I've moved the saving and locking logic to a separate struct and
moved the lock file inside the RootDir (instead of container
root dir), which allows the lock to be taken inside Destroy,
and removes the need to lock the sandbox.
PiperOrigin-RevId: 277599612
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It is required to guarantee the same order of endpoints after save/restore.
PiperOrigin-RevId: 277598665
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PiperOrigin-RevId: 277572791
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newfstatat() syscall is not supported on arm64, so we resort
to use the fstatat() syscall.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I9e89d46c5ec9ae07db201c9da5b6dda9bfd2eaf0
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Link endpoints still don't have a unified way to be requested to stop.
Updates #837
PiperOrigin-RevId: 277398952
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In the future this will replace DanglingEndpoints. DanglingEndpoints must be
kept for now due to issues with save/restore.
This is arguably a cleaner design and allows the stack to know which transport
endpoints might still be using its link endpoints.
Updates #837
PiperOrigin-RevId: 277386633
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Missing "for".
PiperOrigin-RevId: 277358513
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When execveat is called on an interpreter script, the symlink count for
resolving the script path should be separate from the count for resolving the
the corresponding interpreter. An ELOOP error should not occur if we do not hit
the symlink limit along any individual path, even if the total number of
symlinks encountered exceeds the limit.
Closes #574
PiperOrigin-RevId: 277358474
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Currently there are no ABI changes. We should check again closer to release.
PiperOrigin-RevId: 277349744
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Separate the handling of filenames and *fs.File objects in a more explicit way
for the sake of clarity.
PiperOrigin-RevId: 277344203
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Set the snd/rcv buffer sizes so that the test is deterministic and runs in a
reasonable amount of time. It also ensures that we disable any auto-tuning of
the send/receive buffer which may happen.
PiperOrigin-RevId: 277337232
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Updates #837
PiperOrigin-RevId: 277325162
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PiperOrigin-RevId: 277324979
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This change helps support iterating over an NDP options buffer so that
implementations can handle all the NDP options present in an NDP packet.
Note, this change does not yet actually handle these options, it just provides
the tools to do so (in preparation for NDP's Prefix, Parameter, and a complete
implementation of Neighbor Discovery).
Tests: Unittests to make sure we can iterate over a valid NDP options buffer
that may contain multiple options. Also tests to check an iterator before
using it to see if the NDP options buffer is malformed.
PiperOrigin-RevId: 277312487
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When an interpreter script is opened with O_CLOEXEC and the resulting fd is
passed into execveat, an ENOENT error should occur (the script would otherwise
be inaccessible to the interpreter). This matches the actual behavior of
Linux's execveat.
PiperOrigin-RevId: 277306680
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PiperOrigin-RevId: 277189064
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This change supports using a user supplied TCP MSS for new active TCP
connections. Note, the user supplied MSS must be less than or equal to the
maximum possible MSS for a TCP connection's route. If it is greater than the
maximum possible MSS, the maximum possible MSS will be used as the connection's
MSS instead.
This change does not use this user supplied MSS for connections accepted from
listening sockets - that will come in a later change.
Test: Test that outgoing TCP SYN segments contain a TCP MSS option with the user
supplied MSS if it is not greater than the maximum possible MSS for the route.
PiperOrigin-RevId: 277185125
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FDTable.GetFile doesn't exist.
PiperOrigin-RevId: 277089842
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Since the syscall.Stat_t.Nlink is defined as different types on
amd64 and arm64(uint64 and uint32 respectively), we need to cast
them to a unified uint64 type in gVisor code.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I7542b99b195c708f3fc49b1cbe6adebdd2f6e96b
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This change simplifies the function signatures of functions related to loading
executables, such as LoadTaskImage, Load, loadBinary.
PiperOrigin-RevId: 276821187
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This change validates the ICMPv6 checksum field before further processing an
ICMPv6 packet.
Tests: Unittests to make sure that only ICMPv6 packets with a valid checksum
are accepted/processed. Existing tests using checker.ICMPv6 now also check the
ICMPv6 checksum field.
PiperOrigin-RevId: 276779148
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DelayOption is set on all new endpoints in gVisor.
PiperOrigin-RevId: 276746791
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Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I05a7ec69b98b88931ba4a8adb3e8a7b822006001
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1023 from xiaobo55x:syscall_test d44a8b1f827ed4081997af96cd58ba7449e0a9e1
PiperOrigin-RevId: 276740442
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The syscall filters don't allow kill, just tgkill.
PiperOrigin-RevId: 276718421
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PiperOrigin-RevId: 276609608
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This change is in preparation for NDP Prefix Discovery and SLAAC where the stack
will need to handle NDP Prefix Information options.
Tests: Test that given an NDP Prefix Information option buffer, correct values
are returned by the field getters.
PiperOrigin-RevId: 276594592
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container.startContainers() cannot be called twice in a test
(e.g. TestMultiContainerLoadSandbox) because the cleanup
function deletes the rootDir, together with information from
all other containers that may exist.
PiperOrigin-RevId: 276591806
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The amss field in the tcpip.tcp.handshake was not used anywhere. Removed it to
not cause confusion with the amss field in the tcpip.tcp.endpoint struct, which
was documented to be used (and is actually being used) for the same purpose.
PiperOrigin-RevId: 276577088
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This change makes it so that NDP work is done using the per-interface NDP
configurations instead of the stack-wide default NDP configurations to correctly
implement RFC 4861 section 6.3.2 (note here, a host is a single NIC operating
as a host device), and RFC 4862 section 5.1.
Test: Test that we can set NDP configurations on a per-interface basis without
affecting the configurations of other interfaces or the stack-wide default. Also
make sure that after the configurations are updated, the updated configurations
are used for NDP processes (e.g. Duplicate Address Detection).
PiperOrigin-RevId: 276525661
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In glibc, some structures are defined differently on different
platforms.
Such as: C.struct_stat
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 276441249
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PiperOrigin-RevId: 276419967
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As in packet_socket_raw.cc, we should check that certain proc files are set
correctly.
PiperOrigin-RevId: 276384534
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PiperOrigin-RevId: 276380008
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