1 /* 2 * Copyright (c) 1999-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 /* 30 * Support for socket filter kernel extensions 31 */ 32 33 #ifndef NET_KEXT_NET_H 34 #define NET_KEXT_NET_H 35 36 #include <sys/appleapiopts.h> 37 38 #include <sys/queue.h> 39 #include <sys/cdefs.h> 40 #include <sys/types.h> 41 42 #ifdef BSD_KERNEL_PRIVATE 43 /* 44 * Internal implementation bits 45 */ 46 #include <sys/kpi_socketfilter.h> 47 48 struct socket; 49 struct sockopt; 50 struct inpcb; 51 52 /* Private, internal implementation functions */ 53 extern int sflt_permission_check(struct inpcb *inp); 54 extern void sflt_initsock(struct socket *so); 55 extern void sflt_termsock(struct socket *so); 56 extern errno_t sflt_attach_internal(struct socket *so, sflt_handle handle); 57 extern void sflt_notify(struct socket *so, sflt_event_t event, void *param); 58 extern int sflt_ioctl(struct socket *so, u_long cmd, caddr_t data); 59 extern int sflt_bind(struct socket *so, const struct sockaddr *nam); 60 extern int sflt_listen(struct socket *so); 61 extern int sflt_accept(struct socket *head, struct socket *so, 62 const struct sockaddr *local, 63 const struct sockaddr *remote); 64 extern int sflt_getsockname(struct socket *so, struct sockaddr **local); 65 extern int sflt_getpeername(struct socket *so, struct sockaddr **remote); 66 extern int sflt_connectin(struct socket *head, 67 const struct sockaddr *remote); 68 extern int sflt_connectout(struct socket *so, const struct sockaddr *nam); 69 extern int sflt_setsockopt(struct socket *so, struct sockopt *sopt); 70 extern int sflt_getsockopt(struct socket *so, struct sockopt *sopt); 71 extern int sflt_data_out(struct socket *so, const struct sockaddr *to, 72 mbuf_t *data, mbuf_t *control, sflt_data_flag_t flags); 73 extern int sflt_data_in(struct socket *so, const struct sockaddr *from, 74 mbuf_t *data, mbuf_t *control, sflt_data_flag_t flags); 75 76 #endif /* BSD_KERNEL_PRIVATE */ 77 78 #define NFF_BEFORE 0x01 79 #define NFF_AFTER 0x02 80 81 #define NKE_OK 0 82 #define NKE_REMOVE (-1) 83 84 /* 85 * Interface structure for inserting an installed socket NKE into an 86 * existing socket. 87 * 'handle' is the NKE to be inserted, 'where' is an insertion point, 88 * and flags dictate the position of the to-be-inserted NKE relative to 89 * the 'where' NKE. If the latter is NULL, the flags indicate "first" 90 * or "last" 91 */ 92 #pragma pack(4) 93 94 struct so_nke { 95 unsigned int nke_handle; 96 unsigned int nke_where; 97 int nke_flags; /* NFF_BEFORE, NFF_AFTER: net/kext_net.h */ 98 u_int32_t reserved[4]; /* for future use */ 99 }; 100 101 #pragma pack() 102 #endif /* NET_KEXT_NET_H */ 103