X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..ca66cea69e6e866fd781ae2260d9474bdd48f2ca:/bsd/net/bsd_comp.c

diff --git a/bsd/net/bsd_comp.c b/bsd/net/bsd_comp.c
index d81e66f93..14fb57111 100644
--- a/bsd/net/bsd_comp.c
+++ b/bsd/net/bsd_comp.c
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 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,
- * 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@
  */
 /* Because this code is derived from the 4.3BSD compress source:
  *
@@ -57,6 +63,12 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 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.
+ */
 
 /*
  * This version is for use with mbufs on BSD-derived systems.
@@ -72,6 +84,10 @@
 #define PACKETPTR	struct mbuf *
 #include <net/ppp_comp.h>
 
+#if CONFIG_MACF_NET
+#include <security/mac_framework.h>
+#endif /* MAC_NET */
+
 #if DO_BSD_COMPRESS
 /*
  * PPP "BSD compress" compression
@@ -146,26 +162,27 @@ struct bsd_db {
 #define BSD_OVHD	2		/* BSD compress overhead/packet */
 #define BSD_INIT_BITS	BSD_MIN_BITS
 
-static void	bsd_clear __P((struct bsd_db *db));
-static int	bsd_check __P((struct bsd_db *db));
-static void	*bsd_alloc __P((u_char *options, int opt_len, int decomp));
-static int	bsd_init_comp_db __P((struct bsd_db *db, u_char *options, int opt_len,
+static void	bsd_clear(struct bsd_db *db);
+static int	bsd_check(struct bsd_db *db);
+static void	*bsd_alloc(u_char *options, int opt_len, int decomp);
+static int	bsd_init_comp_db(struct bsd_db *db, u_char *options,
+			      int opt_len,
 			      int unit, int hdrlen, int mru, int debug,
-			      int decomp));
-static void	*bsd_comp_alloc __P((u_char *options, int opt_len));
-static void	*bsd_decomp_alloc __P((u_char *options, int opt_len));
-static void	bsd_free __P((void *state));
-static int	bsd_comp_init __P((void *state, u_char *options, int opt_len,
-				   int unit, int hdrlen, int debug));
-static int	bsd_decomp_init __P((void *state, u_char *options, int opt_len,
-				     int unit, int hdrlen, int mru, int debug));
-static int	bsd_compress __P((void *state, struct mbuf **mret,
-				  struct mbuf *mp, int slen, int maxolen));
-static void	bsd_incomp __P((void *state, struct mbuf *dmsg));
-static int	bsd_decompress __P((void *state, struct mbuf *cmp,
-				    struct mbuf **dmpp));
-static void	bsd_reset __P((void *state));
-static void	bsd_comp_stats __P((void *state, struct compstat *stats));
+			      int decomp);
+static void	*bsd_comp_alloc(u_char *options, int opt_len);
+static void	*bsd_decomp_alloc(u_char *options, int opt_len);
+static void	bsd_free(void *state);
+static int	bsd_comp_init(void *state, u_char *options, int opt_len,
+				   int unit, int hdrlen, int debug);
+static int	bsd_decomp_init(void *state, u_char *options, int opt_len,
+				     int unit, int hdrlen, int mru, int debug);
+static int	bsd_compress(void *state, struct mbuf **mret,
+				  struct mbuf *mp, int slen, int maxolen);
+static void	bsd_incomp(void *state, struct mbuf *dmsg);
+static int	bsd_decompress(void *state, struct mbuf *cmp,
+				    struct mbuf **dmpp);
+static void	bsd_reset(void *state);
+static void	bsd_comp_stats(void *state, struct compstat *stats);
 
 /*
  * Procedures exported to if_ppp.c.
@@ -898,6 +915,9 @@ bsd_decompress(state, cmp, dmpp)
     dmp->m_data += db->hdrlen;
     wptr = mtod(dmp, u_char *);
     space = M_TRAILINGSPACE(dmp) - PPP_HDRLEN + 1;
+#if CONFIG_MACF_NET
+    mac_mbuf_label_copy(cmp, dmp);
+#endif
 
     /*
      * Fill in the ppp header, but not the last byte of the protocol