[Bug debuginfod/27669] New: extend webapi for partial match source queries

[Bug debuginfod/27669] New: extend webapi for partial match source queries

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27669

            Bug ID: 27669
           Summary: extend webapi for partial match source queries
           Product: elfutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: debuginfod
          Assignee: unassigned at sourceware dot org
          Reporter: fche at redhat dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

It may be desirable to fetch source files by buildid and __FILE__ name only, as
these can be introspectively extracted sometimes from a running program image,
without DWARF comp_dir etc. work.

It could look like this:

   /buildid/HEXCODE/source*/PARTIAL_PATH

and implement the search by using a sql LIKE operator

   artifactsrc like '%PARTIAL_PATH'

in the mhd-query-s block of handle_buildid()

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[Bug debuginfod/27669] extend webapi for partial match source queries

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27669

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org

--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
(In reply to Frank Ch. Eigler from comment #0)
> It may be desirable to fetch source files by buildid and __FILE__ name only,
> as these can be introspectively extracted sometimes from a running program
> image, without DWARF comp_dir etc. work.
> 
> It could look like this:
> 
>    /buildid/HEXCODE/source*/PARTIAL_PATH
> 
> and implement the search by using a sql LIKE operator
> 
>    artifactsrc like '%PARTIAL_PATH'
> 
> in the mhd-query-s block of handle_buildid()

This might indeed be useful. But how exactly does one get just the buildid and
a source file (base) name? If this comes through DWARF then why not get the
comp_dir at the same time?

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[Bug debuginfod/27669] extend webapi for partial match source queries

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27669

--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> ---
> But how exactly does one get just the buildid and a source file (base) name? 

You do not want to know. :-)

To find self-buildid:

https://github.com/systemd/systemd/pull/19160

To find self source name:

https://github.com/systemd/systemd/blob/fee6441601c979165ebcbb35472036439f8dad5f/src/systemd/sd-journal.h

(Use __FILE__ in sd_journal_() macro apis to find the CU name, sort of)

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