[src/trunk]: src/sys/kern Do not restrict the siginfo a process sends to itse...

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

details:   https://anonhg.NetBSD.org/src/rev/23075f3fe797
branches:  trunk
changeset: 762862:23075f3fe797
user:      martin <martin%NetBSD.org@localhost>
date:      Thu Mar 03 20:46:16 2011 +0000

description:
Do not restrict the siginfo a process sends to itself in any way, but
keep restrictions for foreign processes. This is needed to allow raising
of full SIGFPE siginfo from softfloat libraries for example.

diffstat:

 sys/kern/sys_sig.c |  28 +++++++++++++++-------------
 1 files changed, 15 insertions(+), 13 deletions(-)

diffs (52 lines):

diff -r a8d09fdcb3ed -r 23075f3fe797 sys/kern/sys_sig.c
--- a/sys/kern/sys_sig.c        Thu Mar 03 19:24:43 2011 +0000
+++ b/sys/kern/sys_sig.c        Thu Mar 03 20:46:16 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_sig.c,v 1.31 2011/02/03 21:45:32 joerg Exp $       */
+/*     $NetBSD: sys_sig.c,v 1.32 2011/03/03 20:46:16 martin Exp $      */
 
 /*-
  * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.31 2011/02/03 21:45:32 joerg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.32 2011/03/03 20:46:16 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -223,20 +223,22 @@
        if ((u_int)ksi->ksi_signo >= NSIG)
                return EINVAL;
 
-       if (ksi->ksi_pid != l->l_proc->p_pid)
-               return EPERM;
+       if (pid != l->l_proc->p_pid) {
+               if (ksi->ksi_pid != l->l_proc->p_pid)
+                       return EPERM;
 
-       if (ksi->ksi_uid != kauth_cred_geteuid(l->l_cred))
-               return EPERM;
+               if (ksi->ksi_uid != kauth_cred_geteuid(l->l_cred))
+                       return EPERM;
 
-       switch (ksi->ksi_code) {
-       case SI_USER:
-       case SI_QUEUE:
-               break;
-       default:
-               return EPERM;
+               switch (ksi->ksi_code) {
+               case SI_USER:
+               case SI_QUEUE:
+                       break;
+               default:
+                       return EPERM;
+               }
        }
-               
+
        if (pid > 0) {
                /* kill single process */
                mutex_enter(proc_lock);