[src/trunk]: src/sys/kern implement WCONTINUED, untested

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/04e4b0be5e55
branches:  trunk
changeset: 814660:04e4b0be5e55
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Apr 03 02:28:46 2016 +0000

description:
implement WCONTINUED, untested
fill out more siginfo fields.
use geteuid instead of getuid

diffstat:

 sys/kern/kern_exit.c |  46 ++++++++++++++++++++++++++++------------------
 1 files changed, 28 insertions(+), 18 deletions(-)

diffs (90 lines):

diff -r 26164028e105 -r 04e4b0be5e55 sys/kern/kern_exit.c
--- a/sys/kern/kern_exit.c      Sun Apr 03 02:08:42 2016 +0000
+++ b/sys/kern/kern_exit.c      Sun Apr 03 02:28:46 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_exit.c,v 1.249 2016/04/02 20:38:40 christos Exp $ */
+/*     $NetBSD: kern_exit.c,v 1.250 2016/04/03 02:28:46 christos Exp $ */
 
 /*-
  * Copyright (c) 1998, 1999, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.249 2016/04/02 20:38:40 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.250 2016/04/03 02:28:46 christos Exp $");
 
 #include "opt_ktrace.h"
 #include "opt_dtrace.h"
@@ -823,11 +823,11 @@
                        goto out;
                break;
        case P_UID:
-               if (kauth_cred_getuid(p->p_cred) != (uid_t)id)
+               if (kauth_cred_geteuid(p->p_cred) != (uid_t)id)
                        goto out;
                break;
        case P_GID:
-               if (kauth_cred_getgid(p->p_cred) != (gid_t)id)
+               if (kauth_cred_getegid(p->p_cred) != (gid_t)id)
                        goto out;
                break;
        case P_CID:
@@ -870,14 +870,9 @@
                }
 
                siginfo->si_pid = p->p_pid;
-               siginfo->si_uid = kauth_cred_getuid(p->p_cred);
-
-               /*
-                * The si_addr field would be useful additional
-                * detail, but apparently the PC value may be lost
-                * when we reach this point.  bzero() above sets
-                * siginfo->si_addr to NULL.
-                */
+               siginfo->si_uid = kauth_cred_geteuid(p->p_cred);
+               siginfo->si_utime = p->p_stats->p_ru.ru_utime.tv_sec;
+               siginfo->si_stime = p->p_stats->p_ru.ru_stime.tv_sec;
        }
 
        /*
@@ -980,18 +975,33 @@
                                }
                        }
 
-                       if ((options & WTRAPPED) != 0 &&
-                           child->p_stat == SSTOP &&
-                           child->p_waited == 0 &&
-                           (child->p_slflag & PSL_TRACED ||
-                           options & WUNTRACED)) {
+                       if ((options & WCONTINUED) != 0 &&
+                           child->p_xstat == SIGCONT) {
                                if ((options & WNOWAIT) == 0) {
                                        child->p_waited = 1;
                                        parent->p_nstopchild--;
                                }
                                if (si) {
                                        si->si_status = child->p_xstat;
-                                       si->si_code = CLD_TRAPPED;
+                                       si->si_code = CLD_CONTINUED;
+                               }
+                               break;
+                       }
+
+                       if ((options & (WTRAPPED|WSTOPPED)) != 0 &&
+                           child->p_stat == SSTOP &&
+                           child->p_waited == 0 &&
+                           ((child->p_slflag & PSL_TRACED) ||
+                           options & (WUNTRACED|WSTOPPED))) {
+                               if ((options & WNOWAIT) == 0) {
+                                       child->p_waited = 1;
+                                       parent->p_nstopchild--;
+                               }
+                               if (si) {
+                                       si->si_status = child->p_xstat;
+                                       si->si_code = 
+                                           (child->p_slflag & PSL_TRACED) ?
+                                           CLD_TRAPPED : CLD_STOPPED;
                                }
                                break;
                        }