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Feature #12352

libproc could know about .gnu_debuglink for remote symbol tables

Added by Robert Mustacchi 9 months ago. Updated 8 months ago.

Status:
Closed
Priority:
Normal
Assignee:
Robert Mustacchi
Category:
lib - userland libraries
Start date:
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:

Description

There are many cases where binaries may have symbol tables and debug information in a remote file. This is particularly relevant in lx branded zones and from other platforms. It would help if we could teach libproc how to understand the .gnu_debuglink section which would automatically enable mdb, DTrace, the ptools, etc.

#1

Updated by Robert Mustacchi 8 months ago

This was primarily tested at Joyent by using tools that use libproc such as mdb, dtrace, pstack, etc. on Linux binaries via the lx brand. This allowed us to test the actual GNU built (gcc/gld) versions of this. I used the debian and ubuntu debug packages for that.

#2

Updated by Electric Monk 8 months ago

  • Status changed from New to Closed
  • % Done changed from 90 to 100

git commit e68846a8e404cfae64e1c4e685626bf6867ce513

commit  e68846a8e404cfae64e1c4e685626bf6867ce513
Author: Robert Mustacchi <rm@joyent.com>
Date:   2020-03-16T10:59:44.000Z

    12352 libproc could know about .gnu_debuglink for remote symbol tables
    Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
    Reviewed by: Andy Fiddaman <andy@omniosce.org>
    Approved by: Dan McDonald <danmcd@joyent.com>

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