Author: jhb
Date: Fri May 22 11:03:51 2015
New Revision: 283281
URL: https://svnweb.freebsd.org/changeset/base/283281
Log:
Always set p_oppid when attaching to an existing process via procfs
tracing. This matches the behavior of ptrace(PT_ATTACH). Also,
the procfs detach request assumes p_oppid is always set.
Reviewed by: kib
MFC after: 2 weeks
Modified:
head/sys/fs/procfs/procfs_ctl.c
Modified: head/sys/fs/procfs/procfs_ctl.c
==============================================================================
--- head/sys/fs/procfs/procfs_ctl.c Fri May 22 09:03:55 2015
(r283280)
+++ head/sys/fs/procfs/procfs_ctl.c Fri May 22 11:03:51 2015
(r283281)
@@ -143,8 +143,8 @@ procfs_control(struct thread *td, struct
p->p_flag |= P_TRACED;
faultin(p);
p->p_xstat = 0; /* XXX ? */
+ p->p_oppid = p->p_pptr->p_pid;
if (p->p_pptr != td->td_proc) {
- p->p_oppid = p->p_pptr->p_pid;
proc_reparent(p, td->td_proc);
}
kern_psignal(p, SIGSTOP);
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