xnu-1504.7.4.tar.gz

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

diff --git a/bsd/sys/socketvar.h b/bsd/sys/socketvar.h
index d9e2b7be53ee84e59b443ede8cbdeca23a222a90..8049848224f748357d9997acc67fbb94a306b047 100644 (file)
--- a/bsd/sys/socketvar.h
+++ b/bsd/sys/socketvar.h
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 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@

  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */


@@ -53,37 +59,44 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *

- *     @(#)socketvar.h 8.1 (Berkeley) 6/2/93
+ *     @(#)socketvar.h 8.3 (Berkeley) 2/19/95
+ * $FreeBSD: src/sys/sys/socketvar.h,v 1.46.2.6 2001/08/31 13:45:49 jlemon Exp $
+ */
+/*
+ * 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.

  */
 
  */
 

-#ifndef        _SYS_SOCKETVAR_H_
-#define _SYS_SOCKETVAR_H_
+#ifndef _SYS_SOCKETVAR_H_
+#define        _SYS_SOCKETVAR_H_

 
 

+#include <sys/appleapiopts.h>
+#include <sys/queue.h>                 /* for TAILQ macros */

 #include <sys/select.h>                        /* for struct selinfo */
 #include <sys/select.h>                        /* for struct selinfo */

-#include <sys/queue.h>

 #include <net/kext_net.h>
 #include <sys/ev.h>
 #include <net/kext_net.h>
 #include <sys/ev.h>

+#include <sys/cdefs.h>
+

 /*
  * Hacks to get around compiler complaints
  */
 struct mbuf;
 /*
  * Hacks to get around compiler complaints
  */
 struct mbuf;

-struct socket;
-struct uio;
-struct sockbuf;
-struct sockaddr;
-struct kextcb;
+struct socket_filter_entry;

 struct protosw;
 struct sockif;
 struct sockutil;
 
 struct protosw;
 struct sockif;
 struct sockutil;
 

+#ifdef KERNEL_PRIVATE

 /* strings for sleep message: */
 extern char netio[], netcon[], netcls[];
 /* strings for sleep message: */
 extern char netio[], netcon[], netcls[];

-#define SOCKET_CACHE_ON        
-#define SO_CACHE_FLUSH_INTERVAL 1      /* Seconds */
-#define SO_CACHE_TIME_LIMIT    (120/SO_CACHE_FLUSH_INTERVAL) /* Seconds */
-#define SO_CACHE_MAX_FREE_BATCH        50
-#define MAX_CACHED_SOCKETS     60000
-#define TEMPDEBUG              0
+#define        SOCKET_CACHE_ON
+#define        SO_CACHE_FLUSH_INTERVAL 1       /* Seconds */
+#define        SO_CACHE_TIME_LIMIT     (120/SO_CACHE_FLUSH_INTERVAL) /* Seconds */
+#define        SO_CACHE_MAX_FREE_BATCH 50
+#define        MAX_CACHED_SOCKETS      60000
+#define        TEMPDEBUG               0

 
 /*
  * Kernel structure per socket.
 
 /*
  * Kernel structure per socket.


@@ -91,30 +104,38 @@ extern     char netio[], netcon[], netcls[];
  * handle on protocol and pointer to protocol
  * private data and error information.
  */
  * handle on protocol and pointer to protocol
  * private data and error information.
  */

+#endif /* KERNEL_PRIVATE */
+

 typedef        u_quad_t so_gen_t;
 
 typedef        u_quad_t so_gen_t;
 

+#ifdef KERNEL_PRIVATE
+#ifndef __APPLE__
+/* We don't support BSD style socket filters */
+struct accept_filter;
+#endif
+

 struct socket {
 struct socket {

-       int     so_zone;        /* zone we were allocated from */
+       int     so_zone;                /* zone we were allocated from */

        short   so_type;                /* generic type, see socket.h */
        short   so_options;             /* from socket call, see socket.h */
        short   so_linger;              /* time to linger while closing */
        short   so_state;               /* internal state flags SS_*, below */
        short   so_type;                /* generic type, see socket.h */
        short   so_options;             /* from socket call, see socket.h */
        short   so_linger;              /* time to linger while closing */
        short   so_state;               /* internal state flags SS_*, below */

-       caddr_t so_pcb;                 /* protocol control block */
+       void    *so_pcb;                        /* protocol control block */

        struct  protosw *so_proto;      /* protocol handle */
        struct  protosw *so_proto;      /* protocol handle */

-/*
- * Variables for connection queueing.
- * Socket where accepts occur is so_head in all subsidiary sockets.
- * If so_head is 0, socket is not related to an accept.
- * For head socket so_q0 queues partially completed connections,
- * while so_q is a queue of connections ready to be accepted.
- * If a connection is aborted and it has so_head set, then
- * it has to be pulled out of either so_q0 or so_q.
- * We allow connections to queue up based on current queue lengths
- * and limit on number of queued connections for this socket.
- */
+       /*
+        * Variables for connection queueing.
+        * Socket where accepts occur is so_head in all subsidiary sockets.
+        * If so_head is 0, socket is not related to an accept.
+        * For head socket so_incomp queues partially completed connections,
+        * while so_comp is a queue of connections ready to be accepted.
+        * If a connection is aborted and it has so_head set, then
+        * it has to be pulled out of either so_incomp or so_comp.
+        * We allow connections to queue up based on current queue lengths
+        * and limit on number of queued connections for this socket.
+        */

        struct  socket *so_head;        /* back pointer to accept socket */
        struct  socket *so_head;        /* back pointer to accept socket */

-       TAILQ_HEAD(, socket) so_incomp; /* queue of partial unaccepted connections */
-       TAILQ_HEAD(, socket) so_comp;   /* queue of complete unaccepted connections */
+       TAILQ_HEAD(, socket) so_incomp; /* q of partially unaccepted conns */
+       TAILQ_HEAD(, socket) so_comp;   /* q of complete unaccepted conns */

        TAILQ_ENTRY(socket) so_list;    /* list of unaccepted connections */
        short   so_qlen;                /* number of unaccepted connections */
        short   so_incqlen;             /* number of unaccepted incomplete
        TAILQ_ENTRY(socket) so_list;    /* list of unaccepted connections */
        short   so_qlen;                /* number of unaccepted connections */
        short   so_incqlen;             /* number of unaccepted incomplete


@@ -123,183 +144,235 @@ struct socket {
        short   so_timeo;               /* connection timeout */
        u_short so_error;               /* error affecting connection */
        pid_t   so_pgid;                /* pgid for signals */
        short   so_timeo;               /* connection timeout */
        u_short so_error;               /* error affecting connection */
        pid_t   so_pgid;                /* pgid for signals */

-       u_long  so_oobmark;             /* chars to oob mark */
-/*
- * Variables for socket buffering.
- */
+       u_int32_t       so_oobmark;             /* chars to oob mark */
+#ifndef __APPLE__
+       /* We don't support AIO ops */
+       TAILQ_HEAD(, aiocblist) so_aiojobq; /* AIO ops waiting on socket */
+#endif
+       /*
+        * Variables for socket buffering.
+        */

        struct  sockbuf {
        struct  sockbuf {

-               u_long  sb_cc;          /* actual chars in buffer */
-               u_long  sb_hiwat;       /* max actual char count */
-               u_long  sb_mbcnt;       /* chars of mbufs used */
-               u_long  sb_mbmax;       /* max chars of mbufs to use */
-               long    sb_lowat;       /* low water mark */
+               u_int32_t       sb_cc;          /* actual chars in buffer */
+               u_int32_t       sb_hiwat;       /* max actual char count */
+               u_int32_t       sb_mbcnt;       /* chars of mbufs used */
+               u_int32_t       sb_mbmax;       /* max chars of mbufs to use */
+               u_int32_t       sb_ctl;         /* non-data chars in buffer */
+               u_int32_t       sb_lowat;       /* low water mark */

                struct  mbuf *sb_mb;    /* the mbuf chain */
                struct  mbuf *sb_mb;    /* the mbuf chain */

-               struct  socket *sb_so;  /* socket back ptr */
+               struct  mbuf *sb_mbtail; /* the last mbuf in the chain */
+               struct  mbuf *sb_lastrecord; /* first mbuf of last record */
+#if __APPLE__
+               struct  socket *sb_so;  /* socket back ptr for kexts */
+#endif

                struct  selinfo sb_sel; /* process selecting read/write */
                short   sb_flags;       /* flags, see below */
                struct  selinfo sb_sel; /* process selecting read/write */
                short   sb_flags;       /* flags, see below */

-               short   sb_timeo;       /* timeout for read/write */
+               struct timeval sb_timeo; /* timeout for read/write */
+               u_int   sb_maxused;     /* max char count ever used in sockbuf */
+               void    *reserved1[4];  /* for future use */

        } so_rcv, so_snd;
        } so_rcv, so_snd;

-#define        SB_MAX          (256*1024)      /* default for max chars in sockbuf */
+#define        SB_MAX          (8192*1024)     /* default for max chars in sockbuf */
+#define LOW_SB_MAX     (2*9*1024)      /* lower limit on max socket buffer size, 2 max datagrams */

 #define        SB_LOCK         0x01            /* lock on data queue */
 #define        SB_WANT         0x02            /* someone is waiting to lock */
 #define        SB_WAIT         0x04            /* someone is waiting for data/space */
 #define        SB_SEL          0x08            /* someone is selecting */
 #define        SB_ASYNC        0x10            /* ASYNC I/O, need signals */
 #define        SB_LOCK         0x01            /* lock on data queue */
 #define        SB_WANT         0x02            /* someone is waiting to lock */
 #define        SB_WAIT         0x04            /* someone is waiting for data/space */
 #define        SB_SEL          0x08            /* someone is selecting */
 #define        SB_ASYNC        0x10            /* ASYNC I/O, need signals */

-#define        SB_NOTIFY       (SB_WAIT|SB_SEL|SB_ASYNC)

 #define        SB_UPCALL       0x20            /* someone wants an upcall */
 #define        SB_NOINTR       0x40            /* operations not interruptible */
 #define        SB_UPCALL       0x20            /* someone wants an upcall */
 #define        SB_NOINTR       0x40            /* operations not interruptible */

-#define SB_RECV                0x8000          /* this is rcv sb */
+#define        SB_KNOTE        0x100           /* kernel note attached */
+#define SB_USRSIZE     0x200           /* user specified sbreserve */
+#ifndef __APPLE__
+#define        SB_AIO          0x80            /* AIO operations queued */
+#else
+#define        SB_NOTIFY       (SB_WAIT|SB_SEL|SB_ASYNC)
+#define        SB_DROP         0x400           /* does not accept any more data */
+#define        SB_UNIX         0x800           /* UNIX domain socket buffer */
+#define        SB_RECV         0x8000          /* this is rcv sb */
+
+       caddr_t so_tpcb;        /* Wisc. protocol control block - XXX unused? */
+#endif

 
 

-       caddr_t so_tpcb;                /* Wisc. protocol control block XXX */
-       void    (*so_upcall) __P((struct socket *so, caddr_t arg, int waitf));
+       void    (*so_upcall)(struct socket *so, caddr_t arg, int waitf);

        caddr_t so_upcallarg;           /* Arg for above */
        uid_t   so_uid;                 /* who opened the socket */
        /* NB: generation count must not be first; easiest to make it last. */
        so_gen_t so_gencnt;             /* generation count */
        caddr_t so_upcallarg;           /* Arg for above */
        uid_t   so_uid;                 /* who opened the socket */
        /* NB: generation count must not be first; easiest to make it last. */
        so_gen_t so_gencnt;             /* generation count */

-       TAILQ_HEAD(,eventqelt) so_evlist;
-       int     cached_in_sock_layer;   /* Is socket bundled with pcb/pcb.inp_ppcb? */
+#ifndef __APPLE__
+       void    *so_emuldata;           /* private data for emulators */
+       struct so_accf {
+               struct  accept_filter *so_accept_filter;
+               void    *so_accept_filter_arg;  /* saved filter args */
+               char    *so_accept_filter_str;  /* saved user args */
+       } *so_accf;
+#else
+       TAILQ_HEAD(, eventqelt) so_evlist;
+       int     cached_in_sock_layer;   /* bundled with pcb/pcb.inp_ppcb? */

        struct  socket  *cache_next;
        struct  socket  *cache_prev;
        struct  socket  *cache_next;
        struct  socket  *cache_prev;

-       u_long          cache_timestamp;
+       u_int32_t               cache_timestamp;

        caddr_t         so_saved_pcb;   /* Saved pcb when cacheing */
        struct  mbuf *so_temp;          /* Holding area for outbound frags */
        /* Plug-in support - make the socket interface overridable */
        struct  mbuf *so_tail;
        caddr_t         so_saved_pcb;   /* Saved pcb when cacheing */
        struct  mbuf *so_temp;          /* Holding area for outbound frags */
        /* Plug-in support - make the socket interface overridable */
        struct  mbuf *so_tail;

-       struct  kextcb *so_ext;         /* NKE hook */
+       struct socket_filter_entry *so_filt;    /* NKE hook */
+       u_int32_t       so_flags;       /* Flags */
+#define        SOF_NOSIGPIPE   0x1
+#define        SOF_NOADDRAVAIL 0x2     /* EADDRNOTAVAIL if src addr is gone */
+#define        SOF_PCBCLEARING 0x4     /* pru_disconnect done; don't call pru_detach */
+#define        SOF_DEFUNCT     0x8     /* accepted socket marked as inactive */
+#define        SOF_CLOSEWAIT   0x10    /* blocked in close awaiting some events */
+#define        SOF_UPCALLINUSE 0x20    /* socket upcall is currently in progress */
+#define SOF_REUSESHAREUID      0x40    /* Allows SO_REUSEADDR/SO_REUSEPORT for multiple so_uid */
+#define        SOF_MULTIPAGES  0x80    /* jumbo clusters may be used for sosend */
+#define SOF_ABORTED    0x100   /* soabort was already called once on the socket */
+#define SOF_OVERFLOW 0x200     /* socket was dropped as overflow of listen queue */
+#ifdef __APPLE_API_PRIVATE
+#define SOF_NOTIFYCONFLICT 0x400       /* notify that a bind was done on a port already in use */
+#endif
+#define        SOF_UPCALLCLOSEWAIT 0x800 /* block on close until an upcall returns  */
+#define SOF_BINDRANDOMPORT 0x1000 /* Request a randomized port number for the bind */
+#define SOF_NPX_SETOPTSHUT 0x2000 /* Non POSIX extension to allow setsockopt(2) after shut down */
+       int     so_usecount;    /* refcounting of socket use */;
+       int     so_retaincnt;
+       u_int32_t so_filteruse; /* usecount for the socket filters */
+       u_int32_t       so_traffic_mgt_flags;   /* traffic_mgt socket config */
+       thread_t        so_send_filt_thread;
+       u_int32_t       so_restrictions;
+
+/* for debug pruposes */
+#define        SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
+       void    *lock_lr[SO_LCKDBG_MAX];        /* locking calling history */
+       int     next_lock_lr;
+       void    *unlock_lr[SO_LCKDBG_MAX];      /* unlocking caller history */
+       int     next_unlock_lr;
+       void *reserved; /* reserved for future use */
+#endif /* __APPLE__ */
+
+       struct  label *so_label;        /* MAC label for socket */
+       struct  label *so_peerlabel;    /* cached MAC label for socket peer */
+       thread_t        so_background_thread;   /* thread that marked this socket background */

 };
 };

+#endif /* KERNEL_PRIVATE */

 
 /*
  * Socket state bits.
  */
 
 /*
  * Socket state bits.
  */

-#define        SS_NOFDREF              0x001   /* no file table ref any more */
-#define        SS_ISCONNECTED          0x002   /* socket connected to a peer */
-#define        SS_ISCONNECTING         0x004   /* in process of connecting to peer */
-#define        SS_ISDISCONNECTING      0x008   /* in process of disconnecting */
-#define        SS_CANTSENDMORE         0x010   /* can't send more data to peer */
-#define        SS_CANTRCVMORE          0x020   /* can't receive more data from peer */
-#define        SS_RCVATMARK            0x040   /* at mark on input */
-
-#define        SS_PRIV                 0x080   /* privileged for broadcast, raw... */
-#define        SS_NBIO                 0x100   /* non-blocking ops */
-#define        SS_ASYNC                0x200   /* async i/o notify */
-#define        SS_ISCONFIRMING         0x400   /* deciding to accept connection req */
-#define        SS_INCOMP               0x800   /* Unaccepted, incomplete connection */
+#define        SS_NOFDREF              0x0001  /* no file table ref any more */
+#define        SS_ISCONNECTED          0x0002  /* socket connected to a peer */
+#define        SS_ISCONNECTING         0x0004  /* in process of connecting to peer */
+#define        SS_ISDISCONNECTING      0x0008  /* in process of disconnecting */
+#define        SS_CANTSENDMORE         0x0010  /* can't send more data to peer */
+#define        SS_CANTRCVMORE          0x0020  /* can't receive more data from peer */
+#define        SS_RCVATMARK            0x0040  /* at mark on input */
+
+#define        SS_PRIV                 0x0080  /* privileged for broadcast, raw... */
+#define        SS_NBIO                 0x0100  /* non-blocking ops */
+#define        SS_ASYNC                0x0200  /* async i/o notify */
+#define        SS_ISCONFIRMING         0x0400  /* deciding to accept connection req */
+#define        SS_INCOMP               0x0800  /* Unaccepted, incomplete connection */

 #define        SS_COMP                 0x1000  /* unaccepted, complete connection */
 #define        SS_COMP                 0x1000  /* unaccepted, complete connection */

+#define        SS_ISDISCONNECTED       0x2000  /* socket disconnected from peer */
+#define        SS_DRAINING             0x4000  /* close waiting for blocked system
+                                          calls to drain */
+
+#if defined(__LP64__)
+#define        _XSOCKET_PTR(x)         u_int32_t
+#else
+#define        _XSOCKET_PTR(x)         x
+#endif
+
+#pragma pack(4)
+
+struct xsockbuf {
+               u_int32_t       sb_cc;
+               u_int32_t       sb_hiwat;
+               u_int32_t       sb_mbcnt;
+               u_int32_t       sb_mbmax;
+               int32_t         sb_lowat;
+               short           sb_flags;
+               short           sb_timeo;
+};

 
 /*
  * Externalized form of struct socket used by the sysctl(3) interface.
  */
 struct xsocket {
 
 /*
  * Externalized form of struct socket used by the sysctl(3) interface.
  */
 struct xsocket {

-       size_t  xso_len;        /* length of this structure */
-       struct  socket *xso_so; /* makes a convenient handle sometimes */
-       short   so_type;
-       short   so_options;
-       short   so_linger;
-       short   so_state;
-       caddr_t so_pcb;         /* another convenient handle */
-       int     xso_protocol;
-       int     xso_family;
-       short   so_qlen;
-       short   so_incqlen;
-       short   so_qlimit;
-       short   so_timeo;
-       u_short so_error;
-       pid_t   so_pgid;
-       u_long  so_oobmark;
-       struct  xsockbuf {
-               u_long  sb_cc;
-               u_long  sb_hiwat;
-               u_long  sb_mbcnt;
-               u_long  sb_mbmax;
-               long    sb_lowat;
-               short   sb_flags;
-               short   sb_timeo;
-       } so_rcv, so_snd;
-       uid_t   so_uid;         /* XXX */
+       u_int32_t               xso_len;                /* length of this structure */
+       _XSOCKET_PTR(struct socket *) xso_so;   /* makes a convenient handle */
+       short                   so_type;
+       short                   so_options;
+       short                   so_linger;
+       short                   so_state;
+       _XSOCKET_PTR(caddr_t)   so_pcb;         /* another convenient handle */
+       int                             xso_protocol;
+       int                             xso_family;
+       short                   so_qlen;
+       short                   so_incqlen;
+       short                   so_qlimit;
+       short                   so_timeo;
+       u_short                 so_error;
+       pid_t                   so_pgid;
+       u_int32_t               so_oobmark;
+       struct xsockbuf so_rcv;
+       struct xsockbuf so_snd;
+       uid_t                   so_uid;         /* XXX */

 };
 
 };
 

-/*
- * Macros for sockets and socket buffering.
- */
-#define sbtoso(sb) (sb->sb_so)
+#if !CONFIG_EMBEDDED
+
+struct xsocket64 {
+       u_int32_t               xso_len;                /* length of this structure */
+       u_int64_t               xso_so; /* makes a convenient handle */
+       short                   so_type;
+       short                   so_options;
+       short                   so_linger;
+       short                   so_state;
+       u_int64_t               so_pcb;         /* another convenient handle */
+       int                     xso_protocol;
+       int                     xso_family;
+       short                   so_qlen;
+       short                   so_incqlen;
+       short                   so_qlimit;
+       short                   so_timeo;
+       u_short                 so_error;
+       pid_t                   so_pgid;
+       u_int32_t               so_oobmark;
+       struct xsockbuf         so_rcv;
+       struct xsockbuf         so_snd;
+       uid_t                   so_uid;         /* XXX */
+};

 
 

-/*
- * Do we need to notify the other side when I/O is possible?
- */
-#define sb_notify(sb)  (((sb)->sb_flags & (SB_WAIT|SB_SEL|SB_ASYNC|SB_UPCALL)) != 0)
+#endif /* !CONFIG_EMBEDDED */

 
 

+#pragma pack()
+
+#ifdef KERNEL_PRIVATE

 /*
 /*

- * How much space is there in a socket buffer (so->so_snd or so->so_rcv)?
- * This is problematical if the fields are unsigned, as the space might
- * still be negative (cc > hiwat or mbcnt > mbmax).  Should detect
- * overflow and return 0.  Should use "lmin" but it doesn't exist now.
+ * Macros for sockets and socket buffering.

  */
  */

-#define        sbspace(sb) \
-    ((long) imin((int)((sb)->sb_hiwat - (sb)->sb_cc), \
-        (int)((sb)->sb_mbmax - (sb)->sb_mbcnt)))
-
-/* do we have to send all at once on a socket? */
-#define        sosendallatonce(so) \
-    ((so)->so_proto->pr_flags & PR_ATOMIC)
-
-/* can we read something from so? */
-#define        soreadable(so) \
-    ((so)->so_rcv.sb_cc >= (so)->so_rcv.sb_lowat || \
-       ((so)->so_state & SS_CANTRCVMORE) || \
-       (so)->so_comp.tqh_first || (so)->so_error)
-
-/* can we write something to so? */
-#define        sowriteable(so) \
-    ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \
-       (((so)->so_state&SS_ISCONNECTED) || \
-         ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \
-     ((so)->so_state & SS_CANTSENDMORE) || \
-     (so)->so_error)
-
-/* adjust counters in sb reflecting allocation of m */
-#define        sballoc(sb, m) { \
-       (sb)->sb_cc += (m)->m_len; \
-       (sb)->sb_mbcnt += MSIZE; \
-       if ((m)->m_flags & M_EXT) \
-               (sb)->sb_mbcnt += (m)->m_ext.ext_size; \
-}

 
 

-/* adjust counters in sb reflecting freeing of m */
-#define        sbfree(sb, m) { \
-       (sb)->sb_cc -= (m)->m_len; \
-       (sb)->sb_mbcnt -= MSIZE; \
-       if ((m)->m_flags & M_EXT) \
-               (sb)->sb_mbcnt -= (m)->m_ext.ext_size; \
-}
+#define        sbtoso(sb) (sb->sb_so)

 
 /*
 
 /*

- * Set lock on sockbuf sb; sleep if lock is already held.
- * Unless SB_NOINTR is set on sockbuf, sleep is interruptible.
- * Returns error without lock if sleep is interrupted.
+ * Functions for sockets and socket buffering.
+ * These are macros on FreeBSD. On Darwin the
+ * implementation is in bsd/kern/uipc_socket2.c

  */
  */

-#define sblock(sb, wf) ((sb)->sb_flags & SB_LOCK ? \
-               (((wf) == M_WAIT) ? sb_lock(sb) : EWOULDBLOCK) : \
-               ((sb)->sb_flags |= SB_LOCK), 0)
-
-/* release lock on sockbuf sb */
-#define        sbunlock(sb) { \
-       (sb)->sb_flags &= ~SB_LOCK; \
-       if ((sb)->sb_flags & SB_WANT) { \
-               (sb)->sb_flags &= ~SB_WANT; \
-               wakeup((caddr_t)&(sb)->sb_flags); \
-       } \
-}
-
-#define        sorwakeup(so)   do { \
-                         if (sb_notify(&(so)->so_rcv)) \
-                           sowakeup((so), &(so)->so_rcv); \
-                       } while (0)
-
-#define        sowwakeup(so)   do { \
-                         if (sb_notify(&(so)->so_snd)) \
-                           sowakeup((so), &(so)->so_snd); \
-                       } while (0)

 
 

+__BEGIN_DECLS
+int    sb_notify(struct sockbuf *sb);
+int    sbspace(struct sockbuf *sb);
+int    sosendallatonce(struct socket *so);
+int    soreadable(struct socket *so);
+int    sowriteable(struct socket *so);
+void   sballoc(struct sockbuf *sb, struct mbuf *m);
+void   sbfree(struct sockbuf *sb, struct mbuf *m);
+int    sblock(struct sockbuf *sb, int wf);
+void   sbunlock(struct sockbuf *sb, int locked);
+void   sorwakeup(struct socket *so);
+void   sowwakeup(struct socket *so);
+__END_DECLS

 
 /*
  * Socket extension mechanism: control block hooks:
 
 /*
  * Socket extension mechanism: control block hooks:


@@ -308,18 +381,21 @@ struct    xsocket {
  *  the NFDescriptor to permit selective replacement during
  *  operation, e.g., to disable some functions.
  */
  *  the NFDescriptor to permit selective replacement during
  *  operation, e.g., to disable some functions.
  */

-struct kextcb
-{      struct kextcb *e_next;          /* Next kext control block */
+struct kextcb {
+       struct kextcb *e_next;          /* Next kext control block */

        void *e_fcb;                    /* Real filter control block */
        struct NFDescriptor *e_nfd;     /* NKE Descriptor */
        /* Plug-in support - intercept functions */
        struct sockif *e_soif;          /* Socket functions */
        struct sockutil *e_sout;        /* Sockbuf utility functions */
 };
        void *e_fcb;                    /* Real filter control block */
        struct NFDescriptor *e_nfd;     /* NKE Descriptor */
        /* Plug-in support - intercept functions */
        struct sockif *e_soif;          /* Socket functions */
        struct sockutil *e_sout;        /* Sockbuf utility functions */
 };

-#define EXT_NULL       0x0             /* STATE: Not in use */
-#define sotokextcb(so) (so ? so->so_ext : 0)
+#define        EXT_NULL        0x0             /* STATE: Not in use */
+#define        sotokextcb(so) (so ? so->so_ext : 0)

 
 #ifdef KERNEL
 
 #ifdef KERNEL

+
+#define        SO_FILT_HINT_LOCKED 0x1
+

 /*
  * Argument structure for sosetopt et seq.  This is in the KERNEL
  * section because it will never be visible to user code.
 /*
  * Argument structure for sosetopt et seq.  This is in the KERNEL
  * section because it will never be visible to user code.


@@ -329,20 +405,18 @@ struct sockopt {
        enum    sopt_dir sopt_dir; /* is this a get or a set? */
        int     sopt_level;     /* second arg of [gs]etsockopt */
        int     sopt_name;      /* third arg of [gs]etsockopt */
        enum    sopt_dir sopt_dir; /* is this a get or a set? */
        int     sopt_level;     /* second arg of [gs]etsockopt */
        int     sopt_name;      /* third arg of [gs]etsockopt */

-       void   *sopt_val;       /* fourth arg of [gs]etsockopt */
+       user_addr_t sopt_val;   /* fourth arg of [gs]etsockopt */

        size_t  sopt_valsize;   /* (almost) fifth arg of [gs]etsockopt */
        struct  proc *sopt_p;   /* calling process or null if kernel */
 };
 
 #if SENDFILE
        size_t  sopt_valsize;   /* (almost) fifth arg of [gs]etsockopt */
        struct  proc *sopt_p;   /* calling process or null if kernel */
 };
 
 #if SENDFILE

-

 struct sf_buf {
        SLIST_ENTRY(sf_buf) free_list;  /* list of free buffer slots */
        int             refcnt;         /* reference count */
        struct          vm_page *m;     /* currently mapped page */
        vm_offset_t     kva;            /* va of mapping */
 };
 struct sf_buf {
        SLIST_ENTRY(sf_buf) free_list;  /* list of free buffer slots */
        int             refcnt;         /* reference count */
        struct          vm_page *m;     /* currently mapped page */
        vm_offset_t     kva;            /* va of mapping */
 };

-

 #endif
 
 #ifdef MALLOC_DECLARE
 #endif
 
 #ifdef MALLOC_DECLARE


@@ -351,9 +425,13 @@ MALLOC_DECLARE(M_SONAME);
 #endif
 
 extern int     maxsockets;
 #endif
 
 extern int     maxsockets;

-extern u_long  sb_max;
+extern u_int32_t       sb_max;

 extern int socket_zone;
 extern so_gen_t so_gencnt;
 extern int socket_zone;
 extern so_gen_t so_gencnt;

+extern int     socket_debug;
+extern int sosendjcl;
+extern int sosendjcl_ignore_capab;
+extern int somaxconn;

 
 struct file;
 struct filedesc;
 
 struct file;
 struct filedesc;


@@ -362,89 +440,135 @@ struct sockaddr;
 struct stat;
 struct ucred;
 struct uio;
 struct stat;
 struct ucred;
 struct uio;

+struct knote;

 
 

-/*
- * File operations on sockets.
- */
-int    soo_read __P((struct file *fp, struct uio *uio, struct ucred *cred));
-int    soo_write __P((struct file *fp, struct uio *uio, struct ucred *cred));
-int    soo_ioctl __P((struct file *fp, u_long cmd, caddr_t data,
-           struct proc *p));
-int    soo_select __P((struct file *fp, int which, struct proc *p));
-int    soo_stat __P((struct socket *so, struct stat *ub));
+#define        SBLASTRECORDCHK(sb, s)  \
+       if (socket_debug) sblastrecordchk(sb, s);

 
 

-int    soo_close __P((struct file *fp, struct proc *p));
+#define        SBLASTMBUFCHK(sb, s)    \
+       if (socket_debug) sblastmbufchk(sb, s);

 
 

+#define        SB_EMPTY_FIXUP(sb) {                    \
+       if ((sb)->sb_mb == NULL) {              \
+               (sb)->sb_mbtail = NULL;         \
+               (sb)->sb_lastrecord = NULL;     \
+       }                                       \
+}

 
 /*
  * From uipc_socket and friends
  */
 
 /*
  * From uipc_socket and friends
  */

-struct sockaddr *dup_sockaddr __P((struct sockaddr *sa, int canwait));
-int    getsock __P((struct filedesc *fdp, int fd, struct file **fpp));
-int    sockargs __P((struct mbuf **mp, caddr_t buf, int buflen, int type));
-int    getsockaddr __P((struct sockaddr **namp, caddr_t uaddr, size_t len));
-void   sbappend __P((struct sockbuf *sb, struct mbuf *m));
-int    sbappendaddr __P((struct sockbuf *sb, struct sockaddr *asa,
-           struct mbuf *m0, struct mbuf *control));
-int    sbappendcontrol __P((struct sockbuf *sb, struct mbuf *m0,
-           struct mbuf *control));
-void   sbappendrecord __P((struct sockbuf *sb, struct mbuf *m0));
-void   sbcheck __P((struct sockbuf *sb));
-void   sbcompress __P((struct sockbuf *sb, struct mbuf *m, struct mbuf *n));
-struct mbuf *
-       sbcreatecontrol __P((caddr_t p, int size, int type, int level));
-void   sbdrop __P((struct sockbuf *sb, int len));
-void   sbdroprecord __P((struct sockbuf *sb));
-void   sbflush __P((struct sockbuf *sb));
-void   sbinsertoob __P((struct sockbuf *sb, struct mbuf *m0));
-void   sbrelease __P((struct sockbuf *sb));
-int    sbreserve __P((struct sockbuf *sb, u_long cc));
-void   sbtoxsockbuf __P((struct sockbuf *sb, struct xsockbuf *xsb));
-int    sbwait __P((struct sockbuf *sb));
-int    sb_lock __P((struct sockbuf *sb));
-int    soabort __P((struct socket *so));
-int    soaccept __P((struct socket *so, struct sockaddr **nam));
-struct socket *soalloc __P((int waitok, int dom, int type));
-int    sobind __P((struct socket *so, struct sockaddr *nam));
-void   socantrcvmore __P((struct socket *so));
-void   socantsendmore __P((struct socket *so));
-int    soclose __P((struct socket *so));
-int    soconnect __P((struct socket *so, struct sockaddr *nam));
-int    soconnect2 __P((struct socket *so1, struct socket *so2));
-int    socreate __P((int dom, struct socket **aso, int type, int proto));
-void   sodealloc __P((struct socket *so));
-int    sodisconnect __P((struct socket *so));
-void   sofree __P((struct socket *so));
-int    sogetopt __P((struct socket *so, struct sockopt *sopt));
-void   sohasoutofband __P((struct socket *so));
-void   soisconnected __P((struct socket *so));
-void   soisconnecting __P((struct socket *so));
-void   soisdisconnected __P((struct socket *so));
-void   soisdisconnecting __P((struct socket *so));
-int    solisten __P((struct socket *so, int backlog));
-struct socket *
-       sodropablereq __P((struct socket *head));
-struct socket *
-       sonewconn __P((struct socket *head, int connstatus));
-int    sooptcopyin __P((struct sockopt *sopt, void *buf, size_t len,
-                        size_t minlen));
-int    sooptcopyout __P((struct sockopt *sopt, void *buf, size_t len));
-int    sopoll __P((struct socket *so, int events, struct ucred *cred));
-int    soreceive __P((struct socket *so, struct sockaddr **paddr,
-                      struct uio *uio, struct mbuf **mp0,
-                      struct mbuf **controlp, int *flagsp));
-int    soreserve __P((struct socket *so, u_long sndcc, u_long rcvcc));
-void   sorflush __P((struct socket *so));
-int    sosend __P((struct socket *so, struct sockaddr *addr, struct uio *uio,
-                   struct mbuf *top, struct mbuf *control, int flags));
-
-int    sosetopt __P((struct socket *so, struct sockopt *sopt));
-
-
-int    soshutdown __P((struct socket *so, int how));
-void   sotoxsocket __P((struct socket *so, struct xsocket *xso));
-void   sowakeup __P((struct socket *so, struct sockbuf *sb));
+__BEGIN_DECLS
+/* Not exported */
+extern void socketinit(void) __attribute__((section("__TEXT, initcode")));
+
+/* Exported */
+extern struct sockaddr *dup_sockaddr(struct sockaddr *sa, int canwait);
+extern int getsock(struct filedesc *fdp, int fd, struct file **fpp);
+extern int sockargs(struct mbuf **mp, user_addr_t data, int buflen, int type);
+
+extern int sbappend(struct sockbuf *sb, struct mbuf *m);
+extern int sbappendstream(struct sockbuf *sb, struct mbuf *m);
+extern int sbappendaddr(struct sockbuf *sb, struct sockaddr *asa,
+    struct mbuf *m0, struct mbuf *control, int *error_out);
+extern int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0,
+    struct mbuf *control, int *error_out);
+extern int sbappendrecord(struct sockbuf *sb, struct mbuf *m0);
+extern void sbcheck(struct sockbuf *sb);
+extern void sblastmbufchk(struct sockbuf *, const char *);
+extern void sblastrecordchk(struct sockbuf *, const char *);
+extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
+extern void sbdrop(struct sockbuf *sb, int len);
+extern void sbdroprecord(struct sockbuf *sb);
+extern void sbflush(struct sockbuf *sb);
+extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);
+extern void sbrelease(struct sockbuf *sb);
+extern int sbreserve(struct sockbuf *sb, u_int32_t cc);
+extern void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb);
+extern int sbwait(struct sockbuf *sb);
+extern int sb_lock(struct sockbuf *sb);
+extern void sb_empty_assert(struct sockbuf *, const char *);
+
+extern int soabort(struct socket *so);
+extern int soaccept(struct socket *so, struct sockaddr **nam);
+extern int soacceptlock(struct socket *so, struct sockaddr **nam, int dolock);
+extern int soacceptfilter(struct socket *so);
+extern struct socket *soalloc(int waitok, int dom, int type);
+extern int sobind(struct socket *so, struct sockaddr *nam);
+extern void socantrcvmore(struct socket *so);
+extern void socantsendmore(struct socket *so);
+extern int soclose(struct socket *so);
+extern int soconnect(struct socket *so, struct sockaddr *nam);
+extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
+extern int soconnect2(struct socket *so1, struct socket *so2);
+extern int socreate(int dom, struct socket **aso, int type, int proto);
+extern void sodealloc(struct socket *so);
+extern int sodisconnect(struct socket *so);
+extern int sodisconnectlocked(struct socket *so);
+extern void sofree(struct socket *so);
+extern void soreference(struct socket *so);
+extern void sodereference(struct socket *so);
+extern void somultipages(struct socket *, boolean_t);
+extern int sogetopt(struct socket *so, struct sockopt *sopt);
+extern void sohasoutofband(struct socket *so);
+extern void soisconnected(struct socket *so);
+extern void soisconnecting(struct socket *so);
+extern void soisdisconnected(struct socket *so);
+extern void soisdisconnecting(struct socket *so);
+extern int soisbackground(struct socket *so);
+extern int solisten(struct socket *so, int backlog);
+extern struct socket *sodropablereq(struct socket *head);
+extern struct socket *sonewconn(struct socket *head, int connstatus,
+    const struct sockaddr *from);
+extern int sooptcopyin(struct sockopt *sopt, void *data, size_t len,
+    size_t minlen);
+extern int sooptcopyout(struct sockopt *sopt, void *data, size_t len);
+extern int socket_lock(struct socket *so, int refcount);
+extern int socket_unlock(struct socket *so, int refcount);
+extern void sofreelastref(struct socket *, int);
+extern int sogetaddr_locked(struct socket *, struct sockaddr **, int);
+extern const char *solockhistory_nr(struct socket *);

 
 

+/*
+ * XXX; prepare mbuf for (__FreeBSD__ < 3) routines.
+ * Used primarily in IPSec and IPv6 code.
+ */
+extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
+extern int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
+extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
+
+extern int sopoll(struct socket *so, int events, struct ucred *cred, void *wql);
+extern int soreceive(struct socket *so, struct sockaddr **paddr,
+    struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
+extern int soreserve(struct socket *so, u_int32_t sndcc, u_int32_t rcvcc);
+extern void sorflush(struct socket *so);
+extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
+    struct mbuf *top, struct mbuf *control, int flags);
+
+extern int sosetopt(struct socket *so, struct sockopt *sopt);
+extern int soshutdown(struct socket *so, int how);
+extern int soshutdownlock(struct socket *so, int how);
+extern void sotoxsocket(struct socket *so, struct xsocket *xso);
+#if !CONFIG_EMBEDDED
+extern void sotoxsocket64(struct socket *so, struct xsocket64 *xso);
+#endif
+extern void sowakeup(struct socket *so, struct sockbuf *sb);
+extern int soioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p);
+
+#ifndef __APPLE__
+/* accept filter functions */
+extern int accept_filt_add(struct accept_filter *filt);
+extern int accept_filt_del(char *name);
+extern struct accept_filter *accept_filt_get(char *name);
+#ifdef ACCEPT_FILTER_MOD
+extern int accept_filt_generic_mod_event(module_t mod, int event, void *data);
+SYSCTL_DECL(_net_inet_accf);
+#endif /* ACCEPT_FILTER_MOD */
+#endif /* !defined(__APPLE__) */
+
+__END_DECLS

 
 #endif /* KERNEL */
 
 #endif /* KERNEL */

+#endif /* KERNEL_PRIVATE */
+

 #endif /* !_SYS_SOCKETVAR_H_ */
 #endif /* !_SYS_SOCKETVAR_H_ */