[Bug tapsets/32117] New: RFE: provide fault-injection probe options to set syscall return value

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32117

            Bug ID: 32117
           Summary: RFE: provide fault-injection probe options to set
                    syscall return value
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
          Assignee: systemtap at sourceware dot org
          Reporter: fche at redhat dot com
  Target Milestone: ---

With the multiple possible syscall.* backends in the tapset, it's not possible
for a portable script to override return values from syscalls.  With clever use
of epilogue probe aliases (bug #2627), this may be expressible in the present
scripting language. If it requires new compositional rules with trees of probe
aliases (like syscall.* ones use), then a language extension (to reliably pair
normal and epilogue parts) may be needed.

https://issues.redhat.com/browse/RHEL-55731

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