The bazel server was being started as the wrong user, leading to issues
where the container would suddenly exit during a build.
We can also simplify the waiting logic by starting the container in two
separate steps: those that must complete first, then the asynchronous bit.
PiperOrigin-RevId: 323391161
... when it is possible.
The guitar gVisorKernel*Workflow-s runs test with the local execution_method.
In this case, blaze runs test cases locally without sandboxes. This means
that all tests run in the same network namespace. We have a few tests which
use hard-coded network ports and they can fail if one of these port will be
used by someone else or by another test cases.
PiperOrigin-RevId: 323137254
Implement WalkGetAttr() to reuse the stat that is already
needed for Walk(). In addition, cache file QID, so it
doesn't need to stat the file to compute it.
open(2) time improved by 10%:
Baseline: 6780 ns
Change: 6083 ns
Also fixed file type which was not being set in all places.
PiperOrigin-RevId: 323102560
Open tries to reuse the control file to save syscalls and
file descriptors when opening a file. However, when the
control file was opened using O_PATH (e.g. no file permission
to open readonly), Open() would not check for it.
PiperOrigin-RevId: 322821729
Now it calls pkt.Data.ToView() when writing the packet. This may require
copying when the packet is large, which puts the worse case in an even worse
situation.
This sent out in a separate preparation change as it requires syscall filter
changes. This change will be followed by the change for the adoption of the new
PacketHeader API.
PiperOrigin-RevId: 321447003
Much like the boot process, apply pdeathsig to the gofer for cases where
the sandbox lifecycle is attached to the parent (runsc run/do).
This isn't strictly necessary, as the gofer normally exits once the
sentry disappears, but this makes that extra reliable.
- Combine process creation code that is shared between
root and subcontainer processes
- Move root container information into a struct for
clarity
Updates #2714
PiperOrigin-RevId: 321204798
The go.mod dependency tree for the shim was somehow contradictory. After
resolving these issues (e.g. explicitly imported k8s 1.14, pulling a
specific dbus version), and adding all dependencies, the shim can now be
build as part of the regular bazel tree.
As part of this process, minor cleanup was done in all the source files:
headers were standardized (and include "The gVisor Authors" in addition
to the "The containerd Authors" if originally derived from containerd
sources), and comments were cleaned up to meet coding standards.
This change makes the containerd installation dynamic, so that multiple
versions can be tested, and drops the static installer for the VM image
itself.
This change also updates test/root/crictl_test.go and related utilities,
so that the containerd tests can be run on any version (and in cases
where it applies, they can be run on both v1 and v2 as parameterized
tests).
Adds a netns flag to runsc spec that allows users to specify a network
namespace path when creating a sample config.json file. Also, adds the ability
to specify the command arguments used when running the container.
This will make it easier for new users to create sample OCI bundles without
having to edit the config.json by hand.
PiperOrigin-RevId: 320486267
This change gates all FUSE commands (by gating /dev/fuse) behind a runsc
flag. In order to use FUSE commands, use the --fuse flag with the --vfs2
flag. Check if FUSE is enabled by running dmesg in the sandbox.
This change fixes a few things:
- creating sockets using mknod(2) is supported via vfs2
- fsgofer can create regular files via mknod(2)
- mode = 0 for mknod(2) will be interpreted as regular file in vfs2 as well
Updates #2923
PiperOrigin-RevId: 320074267
Linux controls socket send/receive buffers using a few sysctl variables
- net.core.rmem_default
- net.core.rmem_max
- net.core.wmem_max
- net.core.wmem_default
- net.ipv4.tcp_rmem
- net.ipv4.tcp_wmem
The first 4 control the default socket buffer sizes for all sockets
raw/packet/tcp/udp and also the maximum permitted socket buffer that can be
specified in setsockopt(SOL_SOCKET, SO_(RCV|SND)BUF,...).
The last two control the TCP auto-tuning limits and override the default
specified in rmem_default/wmem_default as well as the max limits.
Netstack today only implements tcp_rmem/tcp_wmem and incorrectly uses it
to limit the maximum size in setsockopt() as well as uses it for raw/udp
sockets.
This changelist introduces the other 4 and updates the udp/raw sockets to use
the newly introduced variables. The values for min/max match the current
tcp_rmem/wmem values and the default value buffers for UDP/RAW sockets is
updated to match the linux value of 212KiB up from the really low current value
of 32 KiB.
Updates #3043Fixes#3043
PiperOrigin-RevId: 318089805
gVisor bot
Adin Scannell
Andrei Vagin
Fabricio Voznika
Ridwan Sharif
Bhasker Hariharan
Ting-Yu Wang
Michael Pratt
Ian Lewis
Ayush Ranjan
Andrew Dunham
Nicolas Lacasse