bsd/miscfs/devfs/fdesc.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, 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 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1992, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software donated to Berkeley by
  34  * Jan-Simon Pendry.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)fdesc.h     8.6 (Berkeley) 8/20/94
  65  *
  66  * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp #
  67  */
  68 #ifndef __FDESC_FDESC_H__
  69 #define __FDESC_FDESC_H__
  70
  71 #include  <sys/appleapiopts.h>
  72
  73 #ifdef __APPLE_API_PRIVATE
  74 #ifdef KERNEL
  75
  76 #define FD_ROOT         2
  77 #define FD_DEVFD        3
  78 #define FD_STDIN        4
  79 #define FD_STDOUT       5
  80 #define FD_STDERR       6
  81 #define FD_DESC         8
  82 #define FD_MAX          12
  83
  84 typedef enum {
  85         Fdesc,
  86 } fdntype;
  87
  88 struct fdescnode {
  89         LIST_ENTRY(fdescnode)   fd_hash;        /* Hash list */
  90         struct vnode            *fd_vnode;      /* Back ptr to vnode */
  91         fdntype                 fd_type;        /* Type of this node */
  92         int                     fd_fd;          /* Fd to be dup'ed */
  93         const char              *fd_link;       /* Link to fd/n */
  94         int                     fd_ix;          /* filesystem index */
  95 };
  96
  97 #define VFSTOFDESC(mp)  ((struct fdescmount *)((mp)->mnt_data))
  98 #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
  99
 100 __BEGIN_DECLS
 101 extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **, enum vtype, int);
 102 extern int fdesc_badop(void);
 103 extern int fdesc_getattr(struct vnop_getattr_args *ap);
 104 extern int fdesc_inactive(struct vnop_inactive_args *ap);
 105 extern int devfs_fdesc_init(void);
 106 extern int devfs_fdesc_makelinks(void);
 107 extern int fdesc_ioctl(struct vnop_ioctl_args *ap);
 108 extern int devfs_devfd_lookup(struct vnop_lookup_args *ap);
 109 extern int devfs_devfd_readdir(struct vnop_readdir_args *ap);
 110 extern int fdesc_open(struct vnop_open_args *ap);
 111 extern int fdesc_pathconf(struct vnop_pathconf_args *ap);
 112 extern int fdesc_read(struct vnop_read_args *ap);
 113 extern int fdesc_readdir(struct vnop_readdir_args *ap);
 114 extern int fdesc_readlink(struct vnop_readlink_args *ap);
 115 extern int fdesc_reclaim(struct vnop_reclaim_args *ap);
 116 extern int fdesc_root(struct mount *, struct vnode **, vfs_context_t);
 117 extern int fdesc_select(struct vnop_select_args *ap);
 118 extern int fdesc_setattr(struct vnop_setattr_args *ap);
 119 extern int fdesc_write(struct vnop_write_args *ap);
 120
 121 extern int(**fdesc_vnodeop_p)(void *);
 122 extern int(**devfs_devfd_vnodeop_p)(void*);
 123 extern struct vfsops fdesc_vfsops;
 124 __END_DECLS
 125
 126 #endif /* KERNEL */
 127 #endif /* __APPLE_API_PRIVATE */
 128 #endif /* __FDESC_FDESC_H__ */