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PiperOrigin-RevId: 203161098
Change-Id: Ia1904420cb3ee830899d24a4fe418bba6533be64
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The /proc and /sys mounts are "mandatory" in the sense that they should be
mounted in the sandbox even when they are not included in the spec. Runsc
treats /tmp similarly, because it is faster to use the internal tmpfs
implementation instead of proxying to the host.
However, the spec may contain submounts of these mandatory mounts (particularly
for /tmp). In those cases, we must mount our mandatory mounts before the
submount, otherwise the submount will be masked.
Since the mandatory mounts are all top-level directories, we can mount them
right after the root.
PiperOrigin-RevId: 203145635
Change-Id: Id69bae771d32c1a5b67e08c8131b73d9b42b2fbf
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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: 201978212
Change-Id: Ie3df1fd41d5293fff66b546a0c68c3bf98126067
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Before a container can be restored, the mounts must be configured.
The root and submounts and their key information is compiled into a
RestoreEnvironment.
Future code will be added to set this created environment before
restoring a container.
Tests to ensure the correct environment were added.
PiperOrigin-RevId: 201544637
Change-Id: Ia894a8b0f80f31104d1c732e113b1d65a4697087
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PiperOrigin-RevId: 201018483
Change-Id: I52fe3d01c83c8a2f0e9275d9d88c37e46fa224a2
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PiperOrigin-RevId: 200768923
Change-Id: I4b8da10bcac296e8171fe6754abec5aabfec5e65
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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: 200274828
Change-Id: I956703217df08d8650a881479b7ade8f9f119912
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runsc now mounts the devpts filesystem, so you get a real terminal using
ssh+sshd.
PiperOrigin-RevId: 200244830
Change-Id: If577c805ad0138fda13103210fa47178d8ac6605
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PiperOrigin-RevId: 199175296
Change-Id: I694ad1cfa65572c92f77f22421fdcac818f44630
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Container user might not have enough priviledge to walk directories and
mount filesystems. Instead, create superuser to perform these steps of
the configuration.
PiperOrigin-RevId: 197953667
Change-Id: I643650ab654e665408e2af1b8e2f2aa12d58d4fb
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When file is backed by host FD, atime and mtime for the host file and the
cached attributes in the Sentry must be close together. In this case,
the call to update atime and mtime can be skipped. This is important when
host filesystem is using overlay because updating atime and mtime explicitly
forces a copy up for every file that is touched.
PiperOrigin-RevId: 196176413
Change-Id: I3933ea91637a071ba2ea9db9d8ac7cdba5dc0482
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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