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When the sandbox runs in attached more, e.g. runsc do, runsc run, the
sandbox lifetime is controlled by the parent process. This wasn't working
in all cases because PR_GET_PDEATHSIG doesn't propagate through execve
when the process changes uid/gid. So it was getting dropped when the
sandbox execve's to change to user nobody.
PiperOrigin-RevId: 300601247
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PiperOrigin-RevId: 296105337
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PiperOrigin-RevId: 294297004
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The preferred Copyright holder is "The gVisor Authors".
PiperOrigin-RevId: 291786657
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PiperOrigin-RevId: 291745021
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* Rename syncutil to sync.
* Add aliases to sync types.
* Replace existing usage of standard library sync package.
This will make it easier to swap out synchronization primitives. For example,
this will allow us to use primitives from github.com/sasha-s/go-deadlock to
check for lock ordering violations.
Updates #1472
PiperOrigin-RevId: 289033387
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runsc debug --ps list all processes with all threads. This option is added to
the debug command but not to the ps command, because it is going to be used for
debug purposes and we want to add any useful information without thinking about
backward compatibility.
This will help to investigate syzkaller issues.
PiperOrigin-RevId: 285013668
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This adds meaningful annotations to the trace generated by the runtime/trace
package.
PiperOrigin-RevId: 284290115
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Linux kernel before 4.19 doesn't implement a feature that updates
open FD after a file is open for write (and is copied to the upper
layer). Already open FD will continue to read the old file content
until they are reopened. This is especially problematic for gVisor
because it caches open files.
Flag was added to force readonly files to be reopenned when the
same file is open for write. This is only needed if using kernels
prior to 4.19.
Closes #1006
It's difficult to really test this because we never run on tests
on older kernels. I'm adding a test in GKE which uses kernels
with the overlayfs problem for 1.14 and lower.
PiperOrigin-RevId: 275115289
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'docker exec' was getting CAP_NET_RAW even when --net-raw=false
because it was not filtered out from when copying container's
capabilities.
PiperOrigin-RevId: 272260451
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PiperOrigin-RevId: 271235134
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We already do this for `runsc run`, but need to do the same for `runsc exec`.
PiperOrigin-RevId: 270793459
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Filter installation has been streamlined and functions renamed.
Documentation has been fixed to be standards compliant, and missing
documentation added. gofmt has also been applied to modified files.
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This commit allows the use of the `--fsgofer-host-uds-allowed` flag to
enable mounting sockets and add the appropriate seccomp filters.
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The simple test script has gotten out of control. Shard this script into
different pieces and attempt to impose order on overall test structure. This
change helps lay some of the foundations for future improvements.
* The runsc/test directories are moved into just test/.
* The runsc/test/testutil package is split into logical pieces.
* The scripts/ directory contains new top-level targets.
* Each test is now responsible for building targets it requires.
* The install functionality is moved into `runsc` itself for simplicity.
* The existing kokoro run_tests.sh file now just calls all (can be split).
After this change is merged, I will create multiple distinct workflows for
Kokoro, one for each of the scripts currently targeted by `run_tests.sh` today,
which should dramatically reduce the time-to-run for the Kokoro tests, and
provides a better foundation for further improvements to the infrastructure.
PiperOrigin-RevId: 267081397
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PiperOrigin-RevId: 256494243
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Addresses obvious typos, in the documentation only.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/443 from Pixep:fix/documentation-spelling 4d0688164eafaf0b3010e5f4824b35d1e7176d65
PiperOrigin-RevId: 255477779
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Go was going to change the behavior of SysProcAttr.Ctty such that it must be an
FD in the *parent* FD table:
https://go-review.googlesource.com/c/go/+/178919/
However, after some debate, it was decided that this change was too
backwards-incompatible, and so it was reverted.
https://github.com/golang/go/issues/29458
The behavior going forward is unchanged: the Ctty FD must be an FD in the
*child* FD table.
PiperOrigin-RevId: 255228476
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An upcoming change in Go 1.13 [1] changes the semantics of the SysProcAttr.Ctty
field. Prior to the change, the FD must be an FD in the child process's FD
table (aka "post-shuffle"). After the change, the FD must be an FD in the
current process's FD table (aka "pre-shuffle").
To be compatible with both versions this CL introduces a new boolean
"CttyFdIsPostShuffle" which indicates whether a pre- or post-shuffle FD should
be provided. We use build tags to chose the correct one.
1: https://go-review.googlesource.com/c/go/+/178919/
PiperOrigin-RevId: 255015303
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When we reopen file by path, we can't be sure that
we will open exactly the same file. The file can be
deleted and another one with the same name can be
created.
PiperOrigin-RevId: 254898594
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New options are:
runsc debug --strace=off|all|function1,function2
runsc debug --log-level=warning|info|debug
runsc debug --log-packets=true|false
Updates #407
PiperOrigin-RevId: 254843128
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PiperOrigin-RevId: 253882115
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