xnu-1228.3.13.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_object.c

diff --git a/osfmk/ipc/ipc_object.c b/osfmk/ipc/ipc_object.c
index a20d572b8859ec0e0ccad60ef460c61e8a8c9498..0ca7095eea61bdb45d2d6301cf71f71e0f55c6d1 100644 (file)
--- a/osfmk/ipc/ipc_object.c
+++ b/osfmk/ipc/ipc_object.c
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.

  * 
  * 

- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
 /*
  * @OSF_COPYRIGHT@


@@ -47,6 +53,13 @@
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */

+/*
+ * NOTICE: This file was modified by McAfee Research in 2004 to introduce
+ * support for mandatory and extensible security protections.  This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ * Copyright (c) 2005-2006 SPARTA, Inc.
+ */

 /*
  */
 /*
 /*
  */
 /*


@@ -59,11 +72,17 @@
 
 #include <mach_rt.h>
 
 
 #include <mach_rt.h>
 

+#include <mach/mach_types.h>

 #include <mach/boolean.h>
 #include <mach/kern_return.h>
 #include <mach/port.h>
 #include <mach/message.h>
 #include <mach/boolean.h>
 #include <mach/kern_return.h>
 #include <mach/port.h>
 #include <mach/message.h>

+
+#include <kern/kern_types.h>

 #include <kern/misc_protos.h>
 #include <kern/misc_protos.h>

+#include <kern/ipc_kobject.h>
+
+#include <ipc/ipc_types.h>

 #include <ipc/port.h>
 #include <ipc/ipc_space.h>
 #include <ipc/ipc_entry.h>
 #include <ipc/port.h>
 #include <ipc/ipc_space.h>
 #include <ipc/ipc_entry.h>


@@ -72,6 +91,9 @@
 #include <ipc/ipc_right.h>
 #include <ipc/ipc_notify.h>
 #include <ipc/ipc_pset.h>
 #include <ipc/ipc_right.h>
 #include <ipc/ipc_notify.h>
 #include <ipc/ipc_pset.h>

+#include <ipc/ipc_labelh.h>
+
+#include <security/mac_mach_internal.h>

 
 zone_t ipc_object_zones[IOT_NUMBER];
 
 
 zone_t ipc_object_zones[IOT_NUMBER];
 


@@ -231,9 +253,6 @@ ipc_object_alloc_dead(
        ipc_entry_t entry;
        kern_return_t kr;
 
        ipc_entry_t entry;
        kern_return_t kr;
 

-       int i;
-
-

        kr = ipc_entry_alloc(space, namep, &entry);
        if (kr != KERN_SUCCESS)
                return kr;
        kr = ipc_entry_alloc(space, namep, &entry);
        if (kr != KERN_SUCCESS)
                return kr;


@@ -269,9 +288,6 @@ ipc_object_alloc_dead_name(
        ipc_entry_t entry;
        kern_return_t kr;
 
        ipc_entry_t entry;
        kern_return_t kr;
 

-       int i;
-
-

        kr = ipc_entry_alloc_name(space, name, &entry);
        if (kr != KERN_SUCCESS)
                return kr;
        kr = ipc_entry_alloc_name(space, name, &entry);
        if (kr != KERN_SUCCESS)
                return kr;


@@ -329,6 +345,9 @@ ipc_object_alloc(
                ipc_port_t port = (ipc_port_t)object;
 
                bzero((char *)port, sizeof(*port));
                ipc_port_t port = (ipc_port_t)object;
 
                bzero((char *)port, sizeof(*port));

+#if CONFIG_MACF_MACH
+               mac_port_label_init(&port->ip_label);
+#endif

        } else if (otype == IOT_PORT_SET) {
                ipc_pset_t pset = (ipc_pset_t)object;
 
        } else if (otype == IOT_PORT_SET) {
                ipc_pset_t pset = (ipc_pset_t)object;
 


@@ -397,6 +416,9 @@ ipc_object_alloc_name(
                ipc_port_t port = (ipc_port_t)object;
 
                bzero((char *)port, sizeof(*port));
                ipc_port_t port = (ipc_port_t)object;
 
                bzero((char *)port, sizeof(*port));

+#if CONFIG_MACF_MACH
+               mac_port_label_init(&port->ip_label);
+#endif

        } else if (otype == IOT_PORT_SET) {
                ipc_pset_t pset = (ipc_pset_t)object;
 
        } else if (otype == IOT_PORT_SET) {
                ipc_pset_t pset = (ipc_pset_t)object;
 


@@ -485,8 +507,6 @@ ipc_object_copyin(
        ipc_port_t soright;
        kern_return_t kr;
 
        ipc_port_t soright;
        kern_return_t kr;
 

-       int i;
-

        /*
         *      Could first try a read lock when doing
         *      MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND,
        /*
         *      Could first try a read lock when doing
         *      MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND,


@@ -517,7 +537,8 @@ ipc_object_copyin(
  *             Copyin a naked capability from the kernel.
  *
  *             MACH_MSG_TYPE_MOVE_RECEIVE
  *             Copyin a naked capability from the kernel.
  *
  *             MACH_MSG_TYPE_MOVE_RECEIVE

- *                     The receiver must be ipc_space_kernel.
+ *                     The receiver must be ipc_space_kernel
+ *                     or the receive right must already be in limbo.

  *                     Consumes the naked receive right.
  *             MACH_MSG_TYPE_COPY_SEND
  *                     A naked send right must be supplied.
  *                     Consumes the naked receive right.
  *             MACH_MSG_TYPE_COPY_SEND
  *                     A naked send right must be supplied.


@@ -551,14 +572,15 @@ ipc_object_copyin_from_kernel(
 
                ip_lock(port);
                assert(ip_active(port));
 
                ip_lock(port);
                assert(ip_active(port));

-               assert(port->ip_receiver_name != MACH_PORT_NULL);
-               assert(port->ip_receiver == ipc_space_kernel);
+               if (port->ip_destination != IP_NULL) {
+                       assert(port->ip_receiver == ipc_space_kernel);

 
 

-               /* relevant part of ipc_port_clear_receiver */
-               ipc_port_set_mscount(port, 0);
+                       /* relevant part of ipc_port_clear_receiver */
+                       ipc_port_set_mscount(port, 0);

 
 

-               port->ip_receiver_name = MACH_PORT_NULL;
-               port->ip_destination = IP_NULL;
+                       port->ip_receiver_name = MACH_PORT_NULL;
+                       port->ip_destination = IP_NULL;
+               }

                ip_unlock(port);
                break;
            }
                ip_unlock(port);
                break;
            }


@@ -591,9 +613,11 @@ ipc_object_copyin_from_kernel(
                break;
            }
 
                break;
            }
 

-           case MACH_MSG_TYPE_MOVE_SEND:
+           case MACH_MSG_TYPE_MOVE_SEND: {

                /* move naked send right into the message */
                /* move naked send right into the message */

+               assert(((ipc_port_t)object)->ip_srights);

                break;
                break;

+           }

 
            case MACH_MSG_TYPE_MAKE_SEND_ONCE: {
                ipc_port_t port = (ipc_port_t) object;
 
            case MACH_MSG_TYPE_MAKE_SEND_ONCE: {
                ipc_port_t port = (ipc_port_t) object;


@@ -608,9 +632,11 @@ ipc_object_copyin_from_kernel(
                break;
            }
 
                break;
            }
 

-           case MACH_MSG_TYPE_MOVE_SEND_ONCE:
+           case MACH_MSG_TYPE_MOVE_SEND_ONCE: {

                /* move naked send-once right into the message */
                /* move naked send-once right into the message */

+               assert(((ipc_port_t)object)->ip_sorights);

                break;
                break;

+           }

 
            default:
                panic("ipc_object_copyin_from_kernel: strange rights");
 
            default:
                panic("ipc_object_copyin_from_kernel: strange rights");


@@ -773,8 +799,6 @@ ipc_object_copyout_name(
        ipc_entry_t entry;
        kern_return_t kr;
 
        ipc_entry_t entry;
        kern_return_t kr;
 

-       int i;
-

        assert(IO_VALID(object));
        assert(io_otype(object) == IOT_PORT);
 
        assert(IO_VALID(object));
        assert(io_otype(object) == IOT_PORT);
 


@@ -917,6 +941,7 @@ ipc_object_copyout_dest(
 
            default:
                panic("ipc_object_copyout_dest: strange rights");
 
            default:
                panic("ipc_object_copyout_dest: strange rights");

+               name = MACH_PORT_DEAD;

        }
 
        *namep = name;
        }
 
        *namep = name;


@@ -945,8 +970,6 @@ ipc_object_rename(
        ipc_entry_t oentry, nentry;
        kern_return_t kr;
        
        ipc_entry_t oentry, nentry;
        kern_return_t kr;
        

-       int i;
-

        kr = ipc_entry_alloc_name(space, nname, &nentry);
        if (kr != KERN_SUCCESS)
                return kr;
        kr = ipc_entry_alloc_name(space, nname, &nentry);
        if (kr != KERN_SUCCESS)
                return kr;


@@ -972,7 +995,31 @@ ipc_object_rename(
        return kr;
 }
 
        return kr;
 }
 

-#if    MACH_ASSERT
+/*
+ * Get a label out of a port, to be used by a kernel call
+ * that takes a security label as a parameter. In this case, we want
+ * to use the label stored in the label handle and not the label on its
+ * port.
+ *
+ * The port should be locked for this call. The lock protecting
+ * label handle contents should not be necessary, as they can only
+ * be modified when a label handle with one reference is a task label.
+ * User allocated label handles can never be modified.
+ */
+#if CONFIG_MACF_MACH
+struct label *io_getlabel (ipc_object_t objp)
+{
+       ipc_port_t port = (ipc_port_t)objp;
+
+       assert(io_otype(objp) == IOT_PORT);
+
+       if (ip_kotype(port) == IKOT_LABELH)
+               return &((ipc_labelh_t) port->ip_kobject)->lh_label;
+       else
+               return &port->ip_label;
+}
+#endif
+#if MACH_ASSERT || CONFIG_MACF_MACH

 /*
  *     Check whether the object is a port if so, free it.  But
  *     keep track of that fact.
 /*
  *     Check whether the object is a port if so, free it.  But
  *     keep track of that fact.


@@ -989,10 +1036,15 @@ io_free(
 #if    MACH_ASSERT
                ipc_port_track_dealloc(port);
 #endif /* MACH_ASSERT */
 #if    MACH_ASSERT
                ipc_port_track_dealloc(port);
 #endif /* MACH_ASSERT */

+
+#if CONFIG_MACF_MACH
+               /* Port label should have been initialized after creation. */
+               mac_port_label_destroy(&port->ip_label);
+#endif   

        }
        }

-       zfree(ipc_object_zones[otype], (vm_offset_t) object);
+       zfree(ipc_object_zones[otype], object);

 }
 }

-#endif /* MACH_ASSERT */
+#endif         /* MACH_ASSER || MAC */

 
 #include <mach_kdb.h>
 #if    MACH_KDB
 
 #include <mach_kdb.h>
 #if    MACH_KDB


@@ -1007,7 +1059,7 @@ io_free(
  *             Pretty-print an object for kdb.
  */
 
  *             Pretty-print an object for kdb.
  */
 

-char *ikot_print_array[IKOT_MAX_TYPE] = {
+const char *ikot_print_array[IKOT_MAX_TYPE] = {

        "(NONE)             ",
        "(THREAD)           ",
        "(TASK)             ",
        "(NONE)             ",
        "(THREAD)           ",
        "(TASK)             ",


@@ -1040,10 +1092,16 @@ char *ikot_print_array[IKOT_MAX_TYPE] = {
        "(IOKIT_CONNECT)    ",
        "(IOKIT_OBJECT)     ",  /* 30 */
        "(UPL)              ",
        "(IOKIT_CONNECT)    ",
        "(IOKIT_OBJECT)     ",  /* 30 */
        "(UPL)              ",

-                                               /* << new entries here  */
+       "(MEM_OBJ_CONTROL)  ",
+#if CONFIG_MACF_MACH
+       "(LABELH)           ",
+#endif
+/*
+ * Add new entries here.
+ * Please keep in sync with kern/ipc_kobject.h
+ */

        "(UNKNOWN)          "   /* magic catchall       */
 };
        "(UNKNOWN)          "   /* magic catchall       */
 };

-/* Please keep in sync with kern/ipc_kobject.h */

 
 void
 ipc_object_print(
 
 void
 ipc_object_print(