xnu-4903.241.1.tar.gz

[apple/xnu.git] / bsd / net / raw_cb.c

diff --git a/bsd/net/raw_cb.c b/bsd/net/raw_cb.c
index 63ff3b8ece9dad6e441a68267d19a28d9d73a4b9..2aaaeeb4b3074de6731c757cdd11915886e1c0e7 100644 (file)
--- a/bsd/net/raw_cb.c
+++ b/bsd/net/raw_cb.c
@@ -1,31 +1,29 @@
 /*
- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * @APPLE_LICENSE_OSREFERENCE_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. 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 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.
- *
- * 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, 
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * 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,
+ * 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_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1980, 1986, 1993
@@ -83,8 +81,8 @@
 
 struct rawcb_list_head rawcb_list;
 
-static u_long  raw_sendspace = RAWSNDQ;
-static u_long  raw_recvspace = RAWRCVQ;
+static uint32_t        raw_sendspace = RAWSNDQ;
+static uint32_t        raw_recvspace = RAWRCVQ;
 extern lck_mtx_t       *raw_mtx;       /*### global raw cb mutex for now */
 
 /*
@@ -92,11 +90,9 @@ extern lck_mtx_t     *raw_mtx;       /*### global raw cb mutex for now */
  * of buffer space for the socket.
  */
 int
-raw_attach(so, proto)
-       register struct socket *so;
-       int proto;
+raw_attach(struct socket *so, int proto)
 {
-       register struct rawcb *rp = sotorawcb(so);
+       struct rawcb *rp = sotorawcb(so);
        int error;
 
        /*
@@ -110,7 +106,7 @@ raw_attach(so, proto)
        if (error)
                return (error);
        rp->rcb_socket = so;
-       rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
+       rp->rcb_proto.sp_family = SOCK_DOM(so);
        rp->rcb_proto.sp_protocol = proto;
        lck_mtx_lock(raw_mtx);
        LIST_INSERT_HEAD(&rawcb_list, rp, list);
@@ -123,8 +119,7 @@ raw_attach(so, proto)
  * socket resources.
  */
 void
-raw_detach(rp)
-       register struct rawcb *rp;
+raw_detach(struct rawcb *rp)
 {
        struct socket *so = rp->rcb_socket;
 
@@ -151,16 +146,21 @@ raw_detach(rp)
  * Disconnect and possibly release resources.
  */
 void
-raw_disconnect(rp)
-       struct rawcb *rp;
+raw_disconnect(struct rawcb *rp)
 {
+       struct socket *so = rp->rcb_socket;
 
 #ifdef notdef
        if (rp->rcb_faddr)
                m_freem(dtom(rp->rcb_faddr));
        rp->rcb_faddr = 0;
 #endif
-       if (rp->rcb_socket->so_state & SS_NOFDREF)
+       /*
+        * A multipath subflow socket would have its SS_NOFDREF set by default,
+        * so check for SOF_MP_SUBFLOW socket flag before detaching the PCB;
+        * when the socket is closed for real, SOF_MP_SUBFLOW would be cleared.
+        */
+       if (!(so->so_flags & SOF_MP_SUBFLOW) && (so->so_state & SS_NOFDREF))
                raw_detach(rp);
 }
 
@@ -168,17 +168,17 @@ raw_disconnect(rp)
 #include <sys/mbuf.h>
 
 int
-raw_bind(so, nam)
-       register struct socket *so;
-       struct mbuf *nam;
+raw_bind(struct socket *so, struct mbuf *nam)
 {
        struct sockaddr *addr = mtod(nam, struct sockaddr *);
-       register struct rawcb *rp;
+       struct rawcb *rp;
 
        if (ifnet == 0)
                return (EADDRNOTAVAIL);
        rp = sotorawcb(so);
        nam = m_copym(nam, 0, M_COPYALL, M_WAITOK);
+       if (nam == NULL)
+               return ENOBUFS;
        rp->rcb_laddr = mtod(nam, struct sockaddr *);
        return (0);
 }