[src/trunk]: src/sys/compat/mach In mach_ports_lookup, allow the out of band ...

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

details:   https://anonhg.NetBSD.org/src/rev/145c56eca199
branches:  trunk
changeset: 540532:145c56eca199
user:      manu <manu%NetBSD.org@localhost>
date:      Tue Dec 17 22:47:07 2002 +0000

description:
In mach_ports_lookup, allow the out of band data mapping anywhere we have
some free space

diffstat:

 sys/compat/mach/mach_task.c |  25 +++++++++++--------------
 1 files changed, 11 insertions(+), 14 deletions(-)

diffs (58 lines):

diff -r 1752ad7927e6 -r 145c56eca199 sys/compat/mach/mach_task.c
--- a/sys/compat/mach/mach_task.c       Tue Dec 17 20:49:07 2002 +0000
+++ b/sys/compat/mach/mach_task.c       Tue Dec 17 22:47:07 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mach_task.c,v 1.12 2002/12/17 18:42:57 manu Exp $ */
+/*     $NetBSD: mach_task.c,v 1.13 2002/12/17 22:47:07 manu Exp $ */
 
 /*-
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mach_task.c,v 1.12 2002/12/17 18:42:57 manu Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mach_task.c,v 1.13 2002/12/17 22:47:07 manu Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -117,22 +117,19 @@
        mach_ports_lookup_reply_t *rep = args->rmsg;
        size_t *msglen = args->rsize;
        struct proc *p = args->p;
-       struct exec_vmcmd evc;
+       vaddr_t va;
        int error;
 
        /* 
         * This is some out of band data sent with the reply. In the 
-        * encoutered situation the out of band data has laways been
-        * null. We have to see more of his in order to fully understand
-        * How this trap works.
+        * encountered situation the out of band data has always been null
+        * filled. We have to see more of his in order to fully understand
+        * how this trap works.
         */
-       bzero(&evc, sizeof(evc));
-       evc.ev_addr = 0x00008000;
-       evc.ev_len = PAGE_SIZE;
-       evc.ev_prot = UVM_PROT_RW;
-       evc.ev_proc = *vmcmd_map_zero;
- 
-       if ((error = (*evc.ev_proc)(p, &evc)) != 0)
+       va = vm_map_min(&p->p_vmspace->vm_map);
+       if ((error = uvm_map(&p->p_vmspace->vm_map, &va, PAGE_SIZE, NULL, 
+           UVM_UNKNOWN_OFFSET, 0, UVM_MAPFLAG(UVM_PROT_RW, UVM_PROT_ALL,
+           UVM_INH_COPY, UVM_ADV_NORMAL, UVM_FLAG_COPYONW))) != 0)
                return mach_msg_error(args, error);
 
        rep->rep_msgh.msgh_bits =
@@ -142,7 +139,7 @@
        rep->rep_msgh.msgh_local_port = req->req_msgh.msgh_local_port;
        rep->rep_msgh.msgh_id = req->req_msgh.msgh_id + 100;
        rep->rep_msgh_body.msgh_descriptor_count = 1;   /* XXX why ? */
-       rep->rep_init_port_set.address = (void *)evc.ev_addr;
+       rep->rep_init_port_set.address = (void *)va;
        rep->rep_init_port_set.count = 3; /* XXX why ? */
        rep->rep_init_port_set.copy = 2; /* XXX why ? */
        rep->rep_init_port_set.disposition = 0x11; /* XXX why? */