bsd/miscfs/fdesc/fdesc.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  31 /*
  32  * Copyright (c) 1992, 1993
  33  *      The Regents of the University of California.  All rights reserved.
  34  *
  35  * This code is derived from software donated to Berkeley by
  36  * Jan-Simon Pendry.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)fdesc.h     8.6 (Berkeley) 8/20/94
  67  *
  68  * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp #
  69  */
  70 #ifndef __FDESC_FDESC_H__
  71 #define __FDESC_FDESC_H__
  72
  73 #include  <sys/appleapiopts.h>
  74
  75 #ifdef __APPLE_API_PRIVATE
  76 #ifdef KERNEL
  77 struct fdescmount {
  78         struct vnode    *f_root;        /* Root node */
  79 };
  80
  81 #define FD_ROOT         2
  82 #define FD_DEVFD        3
  83 #define FD_STDIN        4
  84 #define FD_STDOUT       5
  85 #define FD_STDERR       6
  86 #define FD_DESC         8
  87 #define FD_MAX          12
  88
  89 typedef enum {
  90         Froot,
  91         Fdevfd,
  92         Fdesc,
  93         Flink
  94 } fdntype;
  95
  96 struct fdescnode {
  97         LIST_ENTRY(fdescnode) fd_hash;  /* Hash list */
  98         struct vnode    *fd_vnode;      /* Back ptr to vnode */
  99         fdntype                 fd_type;        /* Type of this node */
 100         unsigned                fd_fd;          /* Fd to be dup'ed */
 101         char                    *fd_link;       /* Link to fd/n */
 102         int                             fd_ix;          /* filesystem index */
 103 };
 104
 105 #define VFSTOFDESC(mp)  ((struct fdescmount *)((mp)->mnt_data))
 106 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
 107
 108 extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **, enum vtype);
 109 extern int fdesc_badop(void);
 110 extern int fdesc_getattr(struct vnop_getattr_args *ap);
 111 extern int fdesc_inactive(struct vnop_inactive_args *ap);
 112 extern int fdesc_init(struct vfsconf *);
 113 extern int fdesc_ioctl(struct vnop_ioctl_args *ap);
 114 extern int fdesc_lookup(struct vnop_lookup_args *ap);
 115 extern int fdesc_open(struct vnop_open_args *ap);
 116 extern int fdesc_pathconf(struct vnop_pathconf_args *ap);
 117 extern int fdesc_read(struct vnop_read_args *ap);
 118 extern int fdesc_readdir(struct vnop_readdir_args *ap);
 119 extern int fdesc_readlink(struct vnop_readlink_args *ap);
 120 extern int fdesc_reclaim(struct vnop_reclaim_args *ap);
 121 extern int fdesc_root(struct mount *, struct vnode **, vfs_context_t);
 122 extern int fdesc_select(struct vnop_select_args *ap);
 123 extern int fdesc_setattr(struct vnop_setattr_args *ap);
 124 extern int fdesc_write(struct vnop_write_args *ap);
 125
 126 extern int (**fdesc_vnodeop_p)(void *);
 127 extern struct vfsops fdesc_vfsops;
 128 #endif /* KERNEL */
 129 #endif /* __APPLE_API_PRIVATE */
 130 #endif /* __FDESC_FDESC_H__ */