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Properly handle propagation options for root and mounts. Now usage of
mount options shared, rshared, and noexec cause error to start. shared/
rshared breaks sandbox=>host isolation. slave however can be supported
because changes propagate from host to sandbox.
Root FS setup moved inside the gofer. Apart from simplifying the code,
it keeps all mounts inside the namespace. And they are torn down when
the namespace is destroyed (DestroyFS is no longer needed).
PiperOrigin-RevId: 239037661
Change-Id: I8b5ee4d50da33c042ea34fa68e56514ebe20e6e0
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Nothing reads them and they can simply get stale.
Generated with:
$ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD
PiperOrigin-RevId: 231818945
Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
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PiperOrigin-RevId: 224886231
Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22
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PiperOrigin-RevId: 221848471
Change-Id: I882fbe5ce7737048b2e1f668848e9c14ed355665
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PiperOrigin-RevId: 221462069
Change-Id: Id469ed21fe12e582c78340189b932989afa13c67
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This change also adds extensive testing to the p9 package via mocks. The sanity
checks and type checks are moved from the gofer into the core package, where
they can be more easily validated.
PiperOrigin-RevId: 218296768
Change-Id: I4fc3c326e7bf1e0e140a454cbacbcc6fd617ab55
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Sandbox creation uses the limits and reservations configured in the
OCI spec and set cgroup options accordinly. Then it puts both the
sandbox and gofer processes inside the cgroup.
It also allows the cgroup to be pre-configured by the caller. If the
cgroup already exists, sandbox and gofer processes will join the
cgroup but it will not modify the cgroup with spec limits.
PiperOrigin-RevId: 216538209
Change-Id: If2c65ffedf55820baab743a0edcfb091b89c1019
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`docker run --cpuset-cpus=/--cpus=` will generate cpu resource info in config.json
(runtime spec file). When nginx worker_connections is configured as auto, the worker is
generated according to the number of CPUs. If the cgroup is already set on the host, but
it is not displayed correctly in the sandbox, performance may be degraded.
This patch can get cpus info from spec file and apply to sentry on bootup, so the
/proc/cpuinfo can show the correct cpu numbers. `lscpu` and other commands rely on
`/sys/devices/system/cpu/online` are also affected by this patch.
e.g.
--cpuset-cpus=2,3 -> cpu number:2
--cpuset-cpus=4-7 -> cpu number:4
--cpus=2.8 -> cpu number:3
--cpus=0.5 -> cpu number:1
Change-Id: Ideb22e125758d4322a12be7c51795f8018e3d316
PiperOrigin-RevId: 213685199
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When starting a sandbox without direct file or network access, we create an
empty user namespace and run the sandbox in there. However, the root user in
that namespace is still mapped to the root user in the parent namespace.
This CL maps the "nobody" user from the parent namespace into the child
namespace, and runs the sandbox process as user "nobody" inside the new
namespace.
PiperOrigin-RevId: 211572223
Change-Id: I1b1f9b1a86c0b4e7e5ca7bc93be7d4887678bab6
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Now each container gets its own dedicated gofer that is chroot'd to the
rootfs path. This is done to add an extra layer of security in case the
gofer gets compromised.
PiperOrigin-RevId: 210396476
Change-Id: Iba21360a59dfe90875d61000db103f8609157ca0
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PiperOrigin-RevId: 206834838
Change-Id: I9a44c6fa5f4766a01f86e90810f025cefecdf2d4
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Closes #66
PiperOrigin-RevId: 202496258
Change-Id: Ib9287c5bf1279ffba1db21ebd9e6b59305cddf34
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PiperOrigin-RevId: 195365050
Change-Id: I8754dc7a3fc2975d422cae453762a455478a8e6a
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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