On Mon, 9 Nov 2015 22:12:09 +0100 Jann Horn [off-list ref] wrote:

quoted

Can we do

#define PTRACE_foo (PTRACE_MODE_READ|PTRACE_MODE_FSCREDS)

to avoid all that?

Hm. All combinations of the PTRACE_MODE_*CREDS flags with
PTRACE_MODE_{READ,ATTACH} plus optionally PTRACE_MODE_NOAUDIT
make sense, I think. So your suggestion would be to create
four new #defines
PTRACE_MODE_{READ,ATTACH}_{FSCREDS,REALCREDS} and then let
callers OR in the PTRACE_MODE_NOAUDIT flag if needed?

If these flag combinations have an identifiable concept behind them then
sure, it makes sense to capture that via a well-chosen identifier.


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