Author: oshogbo
Date: Mon Aug 5 20:11:57 2019
New Revision: 350611
URL: https://svnweb.freebsd.org/changeset/base/350611
Log:
proc: introduce the proc_add_orphan function
This API allows adding the process to its parent orphan list.
Reviewed by: kib, markj
MFC after: 1 month
Modified:
head/sys/kern/kern_exit.c
head/sys/sys/proc.h
Modified: head/sys/kern/kern_exit.c
==============================================================================
--- head/sys/kern/kern_exit.c Mon Aug 5 19:59:23 2019 (r350610)
+++ head/sys/kern/kern_exit.c Mon Aug 5 20:11:57 2019 (r350611)
@@ -1355,6 +1355,24 @@ loop_locked:
goto loop;
}
+void
+proc_add_orphan(struct proc *child, struct proc *parent)
+{
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+ KASSERT((child->p_flag & P_TRACED) != 0,
+ ("proc_add_orphan: not traced"));
+
+ if (LIST_EMPTY(&parent->p_orphans)) {
+ child->p_treeflag |= P_TREE_FIRST_ORPHAN;
+ LIST_INSERT_HEAD(&parent->p_orphans, child, p_orphan);
+ } else {
+ LIST_INSERT_AFTER(LIST_FIRST(&parent->p_orphans),
+ child, p_orphan);
+ }
+ child->p_treeflag |= P_TREE_ORPHANED;
+}
+
/*
* Make process 'parent' the new parent of process 'child'.
* Must be called with an exclusive hold of proctree lock.
@@ -1375,16 +1393,8 @@ proc_reparent(struct proc *child, struct proc *parent,
LIST_INSERT_HEAD(&parent->p_children, child, p_sibling);
proc_clear_orphan(child);
- if (child->p_flag & P_TRACED) {
- if (LIST_EMPTY(&child->p_pptr->p_orphans)) {
- child->p_treeflag |= P_TREE_FIRST_ORPHAN;
- LIST_INSERT_HEAD(&child->p_pptr->p_orphans, child,
- p_orphan);
- } else {
- LIST_INSERT_AFTER(LIST_FIRST(&child->p_pptr->p_orphans),
- child, p_orphan);
- }
- child->p_treeflag |= P_TREE_ORPHANED;
+ if ((child->p_flag & P_TRACED) != 0) {
+ proc_add_orphan(child, child->p_pptr);
}
child->p_pptr = parent;
Modified: head/sys/sys/proc.h
==============================================================================
--- head/sys/sys/proc.h Mon Aug 5 19:59:23 2019 (r350610)
+++ head/sys/sys/proc.h Mon Aug 5 20:11:57 2019 (r350611)
@@ -1069,6 +1069,7 @@ void proc_linkup(struct proc *p, struct thread *td);
struct proc *proc_realparent(struct proc *child);
void proc_reap(struct thread *td, struct proc *p, int *status, int options);
void proc_reparent(struct proc *child, struct proc *newparent, bool
set_oppid);
+void proc_add_orphan(struct proc *child, struct proc *parent);
void proc_set_traced(struct proc *p, bool stop);
void proc_wkilled(struct proc *p);
struct pstats *pstats_alloc(void);
_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
