[src/trunk]: src/sys/compat/mach Also allow to change special and exception p...

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

details:   https://anonhg.NetBSD.org/src/rev/58c6396ebe01
branches:  trunk
changeset: 555665:58c6396ebe01
user:      manu <manu%NetBSD.org@localhost>
date:      Mon Nov 24 20:30:19 2003 +0000

description:
Also allow to change special and exception ports from a remote process

diffstat:

 sys/compat/mach/mach_task.c |  28 +++++++++++++++++-----------
 1 files changed, 17 insertions(+), 11 deletions(-)

diffs (79 lines):

diff -r e26155a234eb -r 58c6396ebe01 sys/compat/mach/mach_task.c
--- a/sys/compat/mach/mach_task.c       Mon Nov 24 19:47:07 2003 +0000
+++ b/sys/compat/mach/mach_task.c       Mon Nov 24 20:30:19 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mach_task.c,v 1.41 2003/11/24 17:20:58 manu Exp $ */
+/*     $NetBSD: mach_task.c,v 1.42 2003/11/24 20:30:19 manu Exp $ */
 
 /*-
  * Copyright (c) 2002-2003 The NetBSD Foundation, Inc.
@@ -40,7 +40,7 @@
 #include "opt_compat_darwin.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mach_task.c,v 1.41 2003/11/24 17:20:58 manu Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mach_task.c,v 1.42 2003/11/24 20:30:19 manu Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -217,10 +217,13 @@
        struct mach_right *mr;
        struct mach_port *mp;
        struct mach_emuldata *med;
+       struct proc *tp;
+       int error;
 
-       /* 
-        * XXX is it possible to set the special ports of another process?
-        */
+       /* Get the target process from the remote port. */
+       mn = req->req_msgh.msgh_remote_port;
+       if ((error = mach_get_target_task(l, mn, &tp, NULL)) != 0)
+               return mach_msg_error(args, error);
 
        mn = req->req_special_port.name;
 
@@ -235,7 +238,7 @@
        if (mr->mr_type == MACH_PORT_TYPE_DEAD_NAME)
                return mach_msg_error(args, EINVAL);
 
-       med = (struct mach_emuldata *)l->l_proc->p_emuldata;
+       med = (struct mach_emuldata *)tp->p_emuldata;
 
        switch (req->req_which_port) {
        case MACH_TASK_KERNEL_PORT:
@@ -267,7 +270,7 @@
                {
                        struct darwin_emuldata *ded;
 
-                       ded = l->l_proc->p_emuldata;
+                       ded = tp->p_emuldata;
                        if (ded->ded_fakepid == 1) {
                                mach_bootstrap_port = med->med_bootstrap;
 #ifdef DEBUG_DARWIN
@@ -438,10 +441,13 @@
        mach_port_name_t mn;
        struct mach_right *mr;
        struct mach_port *mp;
+       struct proc *tp;
+       int error;
 
-       /*
-        * XXX Is it possible to set the exception port of a remote process?
-        */
+       /* Get the target lwp from the remote port. */
+       mn = req->req_msgh.msgh_remote_port;
+       if ((error = mach_get_target_task(l, mn, &tp, NULL)) != 0)
+               return mach_msg_error(args, error);
 
        mn = req->req_new_port.name;
        if ((mr = mach_right_check(mn, l, MACH_PORT_TYPE_SEND)) == 0)
@@ -456,7 +462,7 @@
        mp->mp_datatype = MACH_MP_EXC_FLAGS;
        mp->mp_data = (void *)((req->req_behavior << 16) | req->req_flavor);
 
-       med = l->l_proc->p_emuldata;
+       med = tp->p_emuldata;
        if (req->req_mask & MACH_EXC_MASK_BAD_ACCESS)
                med->med_exc[MACH_EXC_BAD_ACCESS] = mp;
        if (req->req_mask & MACH_EXC_MASK_BAD_INSTRUCTION)