Bug 59154

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Description of problem:
We attach gdb to a program, then we use another program to try and determine 
when/if the debugger is attached by reading the /proc/pid/status for the value 
of TracerPid and /proc/pid/stat for the value of "traced" in the flags. Neither 
one seems to be set, whereas it seems like it should be set if the program is 
being debugged. 

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.run a program that lasts long enough for you to...
2.attach gdb to the program
3. cat /proc/pid/status and /proc/pid/stat to evaluate the TracerPid 
and "traced" bits  for the program (I think TracerPid is the 'new' mechanism 
for this, but we're checking both so we can span versions.)
Note: we were using a threaded program, but I checked all processes and all 
values for these bits were zero.  I haven't tried with a non-threaded program.
	

Actual Results:  TracerPid bit is 0 and so is the traced bit, so our tool 
assumes the debugger is not attached, when in fact it is attached.

Expected Results:  Recognition that the debugger was attached to the program.

Additional info:

We are running the beta1 which is 2.4.9-14a, but we have looked at sources for 
2.4.17. And basically it seems like /proc/pid/stat was not changed so that it 
would OR in the ptrace flag when it reports the process flags.  I'll put in 
more details about that as an attachment...