[Bug bpf/25177] New: stap --bpf -c does not work as specified

[Bug bpf/25177] New: stap --bpf -c does not work as specified

[me at serhei dot io]

https://sourceware.org/bugzilla/show_bug.cgi?id=25177

            Bug ID: 25177
           Summary: stap --bpf -c does not work as specified
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: bpf
          Assignee: systemtap at sourceware dot org
          Reporter: me at serhei dot io
  Target Milestone: ---

With test.stp:

probe begin {
  printf("BEGIN\n")
}

probe process("/opt/stap-master/bin/stap").function("main") {
  printf("found it\n")
  exit()
}

probe end {
  printf("END PASS\n")
}


$ sudo /opt/stap-master/bin/stap test.stp -c '/opt/stap-master/bin/stap -V'
Systemtap translator/driver (version 4.2/0.174, commit
release-4.1-100-ga8c7c8f114fa + changes)
Copyright (C) 2005-2019 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
tested kernel versions: 2.6.18 ... 5.1-rc2
enabled features: AVAHI BOOST_STRING_REF DYNINST BPF JAVA PYTHON2 PYTHON3
LIBRPM LIBSQLITE3 LIBVIRT LIBXML2 NLS NSS READLINE
BEGIN
found it
END PASS

But the same invocation with --bpf does not launch the command:

$ sudo /opt/stap-master/bin/stap test.stp -c '/opt/stap-master/bin/stap -V'
--bpf
BEGIN
...

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[Bug bpf/25177] stap --bpf -c does not work as specified

[wcohen at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25177

William Cohen <wcohen at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |agentzh at gmail dot com

--- Comment #1 from William Cohen <wcohen at redhat dot com> ---
*** Bug 27032 has been marked as a duplicate of this bug. ***

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[Bug bpf/25177] stap --bpf -c does not work as specified

[me at serhei dot io]

https://sourceware.org/bugzilla/show_bug.cgi?id=25177

Serhei Makarov <me at serhei dot io> changed:

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

--- Comment #2 from Serhei Makarov <me at serhei dot io> ---
implemented as of 76d56671cb

Had to link in start_cmd() from staprun to avoid too much redundant code.
(That raises the possibility of also using dbug(), err(), warn() in stapbpf
with their better formatting and colorization. But not relevant to this bug.)

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