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signal: Backtrace on SIGUSR1 #79

Merged
merged 6 commits into from
May 11, 2018
Merged

signal: Backtrace on SIGUSR1 #79

merged 6 commits into from
May 11, 2018

Commits on May 11, 2018

  1. tests: Fix TestShimOps 

    Changed `TestShimOps()` to wait for the go routines started by
`proxyStdio()` to end. Without this fix, `go test` fails with a data
race panic.

Signed-off-by: James O. D. Hunt <[email protected]>
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  2. signal: Rename fatal.go to signals.go 

    The fatal file is going to also deal with non-fatal signals so rename
it.

Signed-off-by: James O. D. Hunt <[email protected]>
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  3. main: Enable debug if log level is debug 

    The debug option is now auto-enabled if the user specifies the debug
log level.

Signed-off-by: James O. D. Hunt <[email protected]>
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  4. logging: Remove unnecessary logging argument 

    Don't pass an empty string to the logger as it is not required.

Signed-off-by: James O. D. Hunt <[email protected]>
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  5. signal: Send fatal signal to workload before dying 

    A signal that the shim considers as fatal should be forwarded to the
container before being handled by the shim (to ensure the former also
receives it).

Signed-off-by: James O. D. Hunt <[email protected]>
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  6. signal: Backtrace on SIGUSR1 

    Rework the signal handling code so that if debug is enabled and a
`SIGUSR1` signal is received, backtrace to the system log but continue
to run.

Added some basic tests for the signal handling code.

Fixes kata-containers#76.

Signed-off-by: James O. D. Hunt <[email protected]>
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    jodh-intel committed May 11, 2018
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