ptrace and SIGCONT

Alexander Kjeldaas (astor@guardian.no)
Thu, 30 Apr 1998 15:39:47 +0200

When a process is ptraced, it will often be set to TASK_STOPPED by the
kernel. However, any process in the same session can start the ptraced
process by sending a SIGCONT signal. Is this intended behaviour? IMO,
it seems like we loose some control over the ptraced process by
allowing this.

The reason I bring this up is because I want to use ptrace to set
capabilities on a process to avoid races. This requires that the
ptracing process actually has control over the ptraced process.

astor

-- 
 Alexander Kjeldaas, Guardian Networks AS, Trondheim, Norway
 http://www.guardian.no/


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