[Bug bpf/23480] New: bpfinterp.cxx should respond to ^C

[Bug bpf/23480] New: bpfinterp.cxx should respond to ^C

[me at serhei dot io]

https://sourceware.org/bugzilla/show_bug.cgi?id=23480

            Bug ID: 23480
           Summary: bpfinterp.cxx should respond to ^C
           Product: systemtap
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bpf
          Assignee: systemtap at sourceware dot org
          Reporter: me at serhei dot io
  Target Milestone: ---

# stap --bpf -v -e 'probe begin { for(;;) { printf("whoosh!") } }'

Cannot be interrupted with ^C, forcing the user to kill the process.

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[Bug bpf/23480] bpfinterp.cxx should respond to ^C

[me at serhei dot io]

https://sourceware.org/bugzilla/show_bug.cgi?id=23480

Serhei Makarov <me at serhei dot io> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Serhei Makarov <me at serhei dot io> ---
Correction: this only happens when 'probe end { ... }' is being executed. That
is because the signal handler in stapbpf.cxx sets the exit flag, which has no
effect once the end probes are already running.

Fixed in commit 9d29349 by restoring signal handlers before running exit
probes, and having these handlers exit immediately rather than setting exit
status.

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