xnu-792.24.17.tar.gz

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

diff --git a/osfmk/ipc/mach_msg.c b/osfmk/ipc/mach_msg.c
index cab3b02ec35673b08f47489362ae7d4c635196b9..e2785e3cfed73b1ef7e5cfd73cdf71109c3232bc 100644 (file)
--- a/osfmk/ipc/mach_msg.c
+++ b/osfmk/ipc/mach_msg.c
@@ -3,20 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
  * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This 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,
- * 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.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -184,6 +183,9 @@ mach_msg_send(
        if ((send_size < sizeof(mach_msg_header_t)) || (send_size & 3))
                return MACH_SEND_MSG_TOO_SMALL;
 
+       if (send_size > MACH_MSG_SIZE_MAX - MAX_TRAILER_SIZE)
+               return MACH_SEND_TOO_LARGE;
+       
        msg_and_trailer_size = send_size + MAX_TRAILER_SIZE;
 
        kmsg = ipc_kmsg_alloc(msg_and_trailer_size);