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[unix-history] / usr / src / sys / kern / kern_proc.c

diff --git a/usr/src/sys/kern/kern_proc.c b/usr/src/sys/kern/kern_proc.c
index 4b14300..16ab001 100644 (file)
--- a/usr/src/sys/kern/kern_proc.c
+++ b/usr/src/sys/kern/kern_proc.c
@@ -1,4 +1,4 @@
-/*     kern_proc.c     3.6     %H%     */
+/*     kern_proc.c     3.7     %H%     */

 
 #include "../h/param.h"
 #include "../h/systm.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"


@@ -493,12 +493,25 @@ done:
                        q->p_ppid = 1;
                        wakeup((caddr_t)&proc[1]);
                        /*
                        q->p_ppid = 1;
                        wakeup((caddr_t)&proc[1]);
                        /*

-                        * Stopped or traced processes are killed
+                        * Traced processes are killed

                         * since their existence means someone is screwing up.
                         * since their existence means someone is screwing up.

+                        * Traced processes are sent a hangup and a continue.
+                        * This is designed to be ``safe'' for setuid
+                        * processes since they must be willing to tolerate
+                        * hangups anyways.

                         */
                         */

-                       if (q->p_stat == SSTOP || q->p_flag&STRC) {
+                       if (q->p_flag&STRC) {

                                q->p_flag &= ~STRC;
                                psignal(q, SIGKILL);
                                q->p_flag &= ~STRC;
                                psignal(q, SIGKILL);

+                       } else if (q->p_stat == SSTOP) {
+                               psignal(q, SIGHUP);
+                               psignal(q, SIGCONT);
+                               /*
+                                * Protect this process from future
+                                * tty signals, and clear TSTP if pending.
+                                */
+                               q->p_pgrp = 0;
+                               q->p_sig &= ~(1<<(SIGTSTP-1));

                        }
                }
        wakeup((caddr_t)p->p_pptr);
                        }
                }
        wakeup((caddr_t)p->p_pptr);