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PR27251: support buildid probing on --x--x--x perm binaries
authorFrank Ch. Eigler <fche@redhat.com>
Tue, 26 Jan 2021 16:09:53 +0000 (11:09 -0500)
committerFrank Ch. Eigler <fche@redhat.com>
Tue, 26 Jan 2021 16:09:53 +0000 (11:09 -0500)
commita790dc64a9d8d9fbaf31653ee0c1ab631cafd88a
treea4fc4bfb6e3d394f1ee05d984a24d650238f53b7tree
parentb24ef7bb156cd1b77083fa25beb901823c965ed8commit | diff
PR27251: support buildid probing on --x--x--x perm binaries

We need to delegate to executable searches to debuginfod for binaries
that exist on the local system, but are unreadable.  Correcting
util.cxx access(3) checks from X_OK -> R_OK to avoid relying on
unreadable links/binaries, which results in stap being unable to probe
them at all.  This can come up for probing some setuid programs.
util.cxx diff | blob | blame | history
systemtap: system-wide probe/trace tool
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