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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* $NetBSD: umap.h,v 1.4 1995/03/29 22:09:57 briggs Exp $ */
23:
24: /*
25: * Copyright (c) 1992, 1993
26: * The Regents of the University of California. All rights reserved.
27: *
28: * This code is derived from software donated to Berkeley by
29: * the UCLA Ficus project.
30: *
31: * Redistribution and use in source and binary forms, with or without
32: * modification, are permitted provided that the following conditions
33: * are met:
34: * 1. Redistributions of source code must retain the above copyright
35: * notice, this list of conditions and the following disclaimer.
36: * 2. Redistributions in binary form must reproduce the above copyright
37: * notice, this list of conditions and the following disclaimer in the
38: * documentation and/or other materials provided with the distribution.
39: * 3. All advertising materials mentioning features or use of this software
40: * must display the following acknowledgement:
41: * This product includes software developed by the University of
42: * California, Berkeley and its contributors.
43: * 4. Neither the name of the University nor the names of its contributors
44: * may be used to endorse or promote products derived from this software
45: * without specific prior written permission.
46: *
47: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
57: * SUCH DAMAGE.
58: *
59: * from: @(#)null_vnops.c 1.5 (Berkeley) 7/10/92
60: * @(#)umap.h 8.3 (Berkeley) 1/21/94
61: */
62:
63: #define MAPFILEENTRIES 64
64: #define GMAPFILEENTRIES 16
65: #define NOBODY 32767
66: #define NULLGROUP 65534
67:
68: struct umap_args {
69: char *target; /* Target of loopback */
70: int nentries; /* # of entries in user map array */
71: int gnentries; /* # of entries in group map array */
72: uid_t (*mapdata)[2]; /* pointer to array of user mappings */
73: gid_t (*gmapdata)[2]; /* pointer to array of group mappings */
74: };
75:
76: struct umap_mount {
77: struct mount *umapm_vfs;
78: struct vnode *umapm_rootvp; /* Reference to root umap_node */
79: int info_nentries; /* number of uid mappings */
80: int info_gnentries; /* number of gid mappings */
81: uid_t info_mapdata[MAPFILEENTRIES][2]; /* mapping data for
82: user mapping in ficus */
83: gid_t info_gmapdata[GMAPFILEENTRIES][2]; /*mapping data for
84: group mapping in ficus */
85: };
86:
87: #ifdef KERNEL
88: /*
89: * A cache of vnode references
90: */
91: struct umap_node {
92: LIST_ENTRY(umap_node) umap_hash; /* Hash list */
93: struct vnode *umap_lowervp; /* Aliased vnode - VREFed once */
94: struct vnode *umap_vnode; /* Back pointer to vnode/umap_node */
95: };
96:
97: extern int umap_node_create __P((struct mount *mp, struct vnode *target, struct vnode **vpp));
98: extern u_long umap_reverse_findid __P((u_long id, u_long map[][2], int nentries));
99: extern void umap_mapids __P((struct mount *v_mount, struct ucred *credp));
100:
101: #define MOUNTTOUMAPMOUNT(mp) ((struct umap_mount *)((mp)->mnt_data))
102: #define VTOUMAP(vp) ((struct umap_node *)(vp)->v_data)
103: #define UMAPTOV(xp) ((xp)->umap_vnode)
104: #ifdef UMAPFS_DIAGNOSTIC
105: extern struct vnode *umap_checkvp __P((struct vnode *vp, char *fil, int lno));
106: #define UMAPVPTOLOWERVP(vp) umap_checkvp((vp), __FILE__, __LINE__)
107: #else
108: #define UMAPVPTOLOWERVP(vp) (VTOUMAP(vp)->umap_lowervp)
109: #endif
110:
111: extern int (**umap_vnodeop_p)();
112: extern struct vfsops umap_vfsops;
113: #endif /* KERNEL */
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