xnu-4903.221.2.tar.gz

[apple/xnu.git] / bsd / sys / domain.h

diff --git a/bsd/sys/domain.h b/bsd/sys/domain.h
index 9f6bd965fd4ff41da3c413911077896abd0ab5f2..6c4a1a0b6d56c4e00dabd3d221ef1abd5ea32eea 100644 (file)
--- a/bsd/sys/domain.h
+++ b/bsd/sys/domain.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2006, 2012 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_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
  * 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


@@ -11,10 +11,10 @@
  * 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.
  * 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.
  * 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,
  * 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,


@@ -22,7 +22,7 @@
  * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */


@@ -67,65 +67,131 @@
 #define _SYS_DOMAIN_H_
 
 #ifdef PRIVATE
 #define _SYS_DOMAIN_H_
 
 #ifdef PRIVATE

-

 #include <sys/appleapiopts.h>
 #include <sys/appleapiopts.h>

-#ifdef KERNEL
+#include <sys/cdefs.h>
+#ifdef KERNEL_PRIVATE

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

-#endif /* KERNEL */

 /*
  * Structure per communications domain.
  */
 
 /*
  * Structure per communications domain.
  */
 

-#include <sys/cdefs.h>
-

 /*
  * Forward structure declarations for function prototypes [sic].
  */
 struct mbuf;
 /*
  * Forward structure declarations for function prototypes [sic].
  */
 struct mbuf;

-#define DOM_REENTRANT  0x01

 
 #pragma pack(4)
 
 
 #pragma pack(4)
 

-struct domain {
+#ifdef XNU_KERNEL_PRIVATE
+/*
+ * Legacy domain.
+ *
+ * NOTE: Do not modify this structure, as there are modules outside of xnu
+ * which rely on the size and layout for binary compatibility.  This structure
+ * is simply used by the exported net_{add,del}_domain_old, pffinddomain_old
+ * routines.  Internally, domains are stored in the private variant of domain
+ * defined down below.
+ */
+struct domain_old {
+#else
+struct domain {
+#endif /* !XNU_KERNEL_PRIVATE */

        int     dom_family;             /* AF_xxx */
        int     dom_family;             /* AF_xxx */

-       const char      *dom_name;
+       const char *dom_name;

        void    (*dom_init)(void);      /* initialize domain data structures */
        void    (*dom_init)(void);      /* initialize domain data structures */

-       int     (*dom_externalize)(struct mbuf *);
-                                       /* externalize access rights */
-       void    (*dom_dispose)(struct mbuf *);
-                                       /* dispose of internalized rights */
+       int     (*dom_externalize)      /* externalize access rights */
+                   (struct mbuf *);
+       void    (*dom_dispose)          /* dispose of internalized rights */
+                   (struct mbuf *);
+#ifdef XNU_KERNEL_PRIVATE
+       struct  protosw_old *dom_protosw; /* Chain of protosw's for AF */
+       struct  domain_old *dom_next;
+#else

        struct  protosw *dom_protosw;   /* Chain of protosw's for AF */
        struct  domain *dom_next;
        struct  protosw *dom_protosw;   /* Chain of protosw's for AF */
        struct  domain *dom_next;

-       int     (*dom_rtattach)(void **, int);
-                                       /* initialize routing table */
+#endif /* !XNU_KERNEL_PRIVATE */
+       int     (*dom_rtattach)         /* initialize routing table */
+                   (void **, int);

        int     dom_rtoffset;           /* an arg to rtattach, in bits */
        int     dom_maxrtkey;           /* for routing layer */
        int     dom_rtoffset;           /* an arg to rtattach, in bits */
        int     dom_maxrtkey;           /* for routing layer */

-       int     dom_protohdrlen;        /* Let the protocol tell us */
+       int     dom_protohdrlen;        /* len of protocol header */

        int     dom_refs;               /* # socreates outstanding */
        int     dom_refs;               /* # socreates outstanding */

-#ifdef _KERN_LOCKS_H_
-       lck_mtx_t       *dom_mtx;               /* domain global mutex */
-#else
-       void    *dom_mtx;               /* domain global mutex */
-#endif
-       uint32_t                dom_flags;
-       uint32_t                reserved[2];
+       lck_mtx_t *dom_mtx;             /* domain global mutex */
+       uint32_t dom_flags;
+       uint32_t reserved[2];

 };
 
 #pragma pack()
 
 };
 
 #pragma pack()
 

-#ifdef KERNEL
-extern struct  domain *domains;
-extern struct  domain localdomain;
+#ifdef XNU_KERNEL_PRIVATE

 
 

-__BEGIN_DECLS
-extern void    net_add_domain(struct domain *dp);
-extern int     net_del_domain(struct domain *);
-extern int     domain_proto_mtx_lock(void);
-extern void    domain_proto_mtx_unlock(int locked);
-__END_DECLS
+#include <sys/queue.h>
+
+/*
+ * Internal, private and extendable representation of domain.
+ */
+struct domain {
+       int     dom_family;             /* AF_xxx */
+       uint32_t dom_flags;             /* domain flags (see below ) */
+       uint32_t dom_refs;              /* # socreates outstanding */
+       lck_mtx_t *dom_mtx;             /* domain global mutex */
+       decl_lck_mtx_data(, dom_mtx_s);
+       TAILQ_ENTRY(domain) dom_entry;  /* next domain in list */
+       TAILQ_HEAD(, protosw) dom_protosw; /* protosw chain */
+       void    (*dom_init)             /* initialize domain data structures */
+                   (struct domain *);
+       int     (*dom_externalize)      /* externalize access rights */
+                   (struct mbuf *);
+       void    (*dom_dispose)          /* dispose of internalized rights */
+                   (struct mbuf *);
+       int     (*dom_rtattach)         /* initialize routing table */
+                   (void **, int);
+       int     dom_rtoffset;           /* an arg to rtattach, in bits */
+       int     dom_maxrtkey;           /* for routing layer */
+       int     dom_protohdrlen;        /* len of protocol header */
+       const char *dom_name;
+       struct domain_old *dom_old;     /* domain pointer per net_add_domain */
+};

 
 

-#define DOMAIN_SET(domain_set) 
+extern TAILQ_HEAD(domains_head, domain) domains;
+extern struct domain *localdomain;
+#endif /* XNU_KERNEL_PRIVATE */

 
 

-#endif /* KERNEL */
+/*
+ * Values for dom_flags
+ */
+#define DOM_REENTRANT  0x1
+#ifdef BSD_KERNEL_PRIVATE
+#define        DOM_INITIALIZED 0x2             /* domain has been initialized */
+#define        DOM_ATTACHED    0x4             /* domain is in the global list */
+#define        DOM_OLD         0x10000000      /* domain added via net_add_domain */
+
+/* pseudo-public domain flags */
+#define        DOMF_USERFLAGS  (DOM_REENTRANT)
+#endif /* BSD_KERNEL_PRIVATE */
+
+__BEGIN_DECLS
+#ifdef XNU_KERNEL_PRIVATE
+extern void net_add_domain_old(struct domain_old *dp);
+extern int net_del_domain_old(struct domain_old *);
+extern void net_drain_domains(void);
+extern void domain_proto_mtx_lock_assert_held(void);
+extern void domain_proto_mtx_lock_assert_notheld(void);
+struct domain_guard;
+typedef const struct domain_guard *domain_guard_t;
+extern domain_guard_t domain_guard_deploy(void);
+extern void domain_guard_release(domain_guard_t);
+struct domain_unguard;
+typedef const struct domain_unguard *domain_unguard_t;
+extern domain_unguard_t domain_unguard_deploy(void);
+extern void domain_unguard_release(domain_unguard_t);
+extern struct domain_old *pffinddomain_old(int);
+#else
+extern void net_add_domain(struct domain *dp);
+extern int net_del_domain(struct domain *);
+#endif /* XNU_KERNEL_PRIVATE */
+extern struct domain *pffinddomain(int);
+__END_DECLS
+#endif /* KERNEL_PRIVATE */

 #endif /* PRIVATE */
 #endif /* _SYS_DOMAIN_H_ */
 #endif /* PRIVATE */
 #endif /* _SYS_DOMAIN_H_ */