xnu-792.10.96.tar.gz

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

diff --git a/bsd/sys/unpcb.h b/bsd/sys/unpcb.h
index bd22c6bee0f0950d6c2d6d57efddd14212b10af4..2a5f8af3333f6b11c2527f768d216c09f3b3c014 100644 (file)
--- a/bsd/sys/unpcb.h
+++ b/bsd/sys/unpcb.h
@@ -57,8 +57,10 @@
 #ifndef _SYS_UNPCB_H_
 #define _SYS_UNPCB_H_
 
+#include <sys/appleapiopts.h>
 #include <sys/queue.h>
 #include <sys/un.h>
+#include <sys/ucred.h>
 
 /*
  * Protocol control block for an active
@@ -85,8 +87,13 @@
  * so that changes in the sockbuf may be computed to modify
  * back pressure on the sender accordingly.
  */
-typedef        u_quad_t        unp_gen_t;
+
+typedef u_quad_t        unp_gen_t;
+
+#ifdef PRIVATE
 LIST_HEAD(unp_head, unpcb);
+#ifdef KERNEL
+#define sotounpcb(so)   ((struct unpcb *)((so)->so_pcb))
 
 struct unpcb {
        LIST_ENTRY(unpcb) unp_link;     /* glue on list of all PCBs */
@@ -100,29 +107,67 @@ struct    unpcb {
        int     unp_cc;                 /* copy of rcv.sb_cc */
        int     unp_mbcnt;              /* copy of rcv.sb_mbcnt */
        unp_gen_t unp_gencnt;           /* generation count of this instance */
+       int     unp_flags;              /* flags */
+       struct  xucred unp_peercred;    /* peer credentials, if applicable */
 };
+#endif /* KERNEL */
 
-#define        sotounpcb(so)   ((struct unpcb *)((so)->so_pcb))
+/*
+ * Flags in unp_flags.
+ *
+ * UNP_HAVEPC - indicates that the unp_peercred member is filled in
+ * and is really the credentials of the connected peer.  This is used
+ * to determine whether the contents should be sent to the user or
+ * not.
+ *
+ * UNP_HAVEPCCACHED - indicates that the unp_peercred member is filled
+ * in, but does *not* contain the credentials of the connected peer
+ * (there may not even be a peer).  This is set in unp_listen() when
+ * it fills in unp_peercred for later consumption by unp_connect().
+ */
+#define UNP_HAVEPC                     0x001
+#define UNP_HAVEPCCACHED               0x002
+
+#ifdef KERNEL
+struct  unpcb_compat {
+#else /* KERNEL */
+#define unpcb_compat unpcb
+struct unpcb {
+#endif /* KERNEL */
+        LIST_ENTRY(unpcb_compat) unp_link;     /* glue on list of all PCBs */
+        struct  socket *unp_socket;     /* pointer back to socket */
+        struct  vnode *unp_vnode;       /* if associated with file */
+        ino_t   unp_ino;                /* fake inode number */
+        struct  unpcb_compat *unp_conn;        /* control block of connected socket */
+        struct  unp_head unp_refs;      /* referencing socket linked list */
+        LIST_ENTRY(unpcb_compat) unp_reflink;  /* link in unp_refs list */
+        struct  sockaddr_un *unp_addr;  /* bound address of socket */
+        int     unp_cc;                 /* copy of rcv.sb_cc */
+        int     unp_mbcnt;              /* copy of rcv.sb_mbcnt */
+        unp_gen_t unp_gencnt;           /* generation count of this instance */
+};
 
 /* Hack alert -- this structure depends on <sys/socketvar.h>. */
-#ifdef _SYS_SOCKETVAR_H_
-struct xunpcb {
-       size_t  xu_len;                 /* length of this structure */
-       struct  unpcb *xu_unpp;         /* to help netstat, fstat */
-       struct  unpcb xu_unp;           /* our information */
-       union {
-               struct  sockaddr_un xuu_addr;   /* our bound address */
-               char    xu_dummy1[256];
-       } xu_au;
-#define        xu_addr xu_au.xuu_addr
-       union {
-               struct  sockaddr_un xuu_caddr; /* their bound address */
-               char    xu_dummy2[256];
-       } xu_cau;
-#define        xu_caddr xu_cau.xuu_caddr
-       struct  xsocket xu_socket;
-       u_quad_t        xu_alignment_hack;
+#ifdef  _SYS_SOCKETVAR_H_
+struct  xunpcb {
+        size_t  xu_len;                 /* length of this structure */
+        struct  unpcb_compat *xu_unpp;         /* to help netstat, fstat */
+        struct  unpcb_compat xu_unp;           /* our information */
+        union {
+                struct  sockaddr_un xuu_addr;   /* our bound address */
+                char    xu_dummy1[256];
+        } xu_au;
+#define xu_addr xu_au.xuu_addr
+        union {
+                struct  sockaddr_un xuu_caddr; /* their bound address */
+                char    xu_dummy2[256];
+        } xu_cau;
+#define xu_caddr xu_cau.xuu_caddr
+        struct  xsocket xu_socket;
+        u_quad_t        xu_alignment_hack;
 };
+#endif /* _SYS_SOCKETVAR_H_ */
+#endif /* PRIVATE */
 
 struct xunpgen {
        size_t  xug_len;
@@ -130,6 +175,5 @@ struct      xunpgen {
        unp_gen_t xug_gen;
        so_gen_t xug_sogen;
 };
-#endif /* _SYS_SOCKETVAR_H_ */
 
 #endif /* _SYS_UNPCB_H_ */