kern_exit.c (7757a1b4dc60696d9a95137ee0a2accd4ee680f4) kern_exit.c (c209e3e2e6e00b30c991764ca28c5dac26f023fc)
1/*-
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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842 PROC_UNLOCK(p);
843 sx_xunlock(&proctree_lock);
844 return;
845 }
846
847 PROC_LOCK(q);
848 sigqueue_take(p->p_ksi);
849 PROC_UNLOCK(q);
1/*-
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

--- 833 unchanged lines hidden (view full) ---

842 PROC_UNLOCK(p);
843 sx_xunlock(&proctree_lock);
844 return;
845 }
846
847 PROC_LOCK(q);
848 sigqueue_take(p->p_ksi);
849 PROC_UNLOCK(q);
850 PROC_UNLOCK(p);
851
852 /*
853 * If we got the child via a ptrace 'attach', we need to give it back
854 * to the old parent.
855 */
850
851 /*
852 * If we got the child via a ptrace 'attach', we need to give it back
853 * to the old parent.
854 */
856 if (p->p_oppid != 0) {
855 if (p->p_oppid != 0 && p->p_oppid != p->p_pptr->p_pid) {
856 PROC_UNLOCK(p);
857 t = proc_realparent(p);
858 PROC_LOCK(t);
859 PROC_LOCK(p);
860 proc_reparent(p, t);
861 p->p_oppid = 0;
862 PROC_UNLOCK(p);
863 pksignal(t, SIGCHLD, p->p_ksi);
864 wakeup(t);
865 cv_broadcast(&p->p_pwait);
866 PROC_UNLOCK(t);
867 sx_xunlock(&proctree_lock);
868 return;
869 }
857 t = proc_realparent(p);
858 PROC_LOCK(t);
859 PROC_LOCK(p);
860 proc_reparent(p, t);
861 p->p_oppid = 0;
862 PROC_UNLOCK(p);
863 pksignal(t, SIGCHLD, p->p_ksi);
864 wakeup(t);
865 cv_broadcast(&p->p_pwait);
866 PROC_UNLOCK(t);
867 sx_xunlock(&proctree_lock);
868 return;
869 }
870 p->p_oppid = 0;
871 PROC_UNLOCK(p);
870
871 /*
872 * Remove other references to this process to ensure we have an
873 * exclusive reference.
874 */
875 sx_xlock(&allproc_lock);
876 LIST_REMOVE(p, p_list); /* off zombproc */
877 sx_xunlock(&allproc_lock);

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873 /*
874 * Remove other references to this process to ensure we have an
875 * exclusive reference.
876 */
877 sx_xlock(&allproc_lock);
878 LIST_REMOVE(p, p_list); /* off zombproc */
879 sx_xunlock(&allproc_lock);

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