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c447342094
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* the UCLA Ficus project.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)umap.h 8.4 (Berkeley) 8/20/94
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*
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* $FreeBSD$
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*/
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#define MAPFILEENTRIES 64
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#define GMAPFILEENTRIES 16
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#define NOBODY 32767
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#define NULLGROUP 65534
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struct umap_args {
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char *target; /* Target of loopback */
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int nentries; /* # of entries in user map array */
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int gnentries; /* # of entries in group map array */
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u_long (*mapdata)[2]; /* pointer to array of user mappings */
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u_long (*gmapdata)[2]; /* pointer to array of group mappings */
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};
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struct umap_mount {
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struct mount *umapm_vfs;
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struct vnode *umapm_rootvp; /* Reference to root umap_node */
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int info_nentries; /* number of uid mappings */
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int info_gnentries; /* number of gid mappings */
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u_long info_mapdata[MAPFILEENTRIES][2]; /* mapping data for
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user mapping in ficus */
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u_long info_gmapdata[GMAPFILEENTRIES][2]; /*mapping data for
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group mapping in ficus */
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};
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#ifdef _KERNEL
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/*
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* A cache of vnode references
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*/
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struct umap_node {
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LIST_ENTRY(umap_node) umap_hash; /* Hash list */
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struct vnode *umap_lowervp; /* Aliased vnode - VREFed once */
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struct vnode *umap_vnode; /* Back pointer to vnode/umap_node */
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};
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extern int umapfs_init __P((struct vfsconf *vfsp));
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extern int umap_node_create __P((struct mount *mp, struct vnode *target, struct vnode **vpp));
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extern u_long umap_reverse_findid __P((u_long id, u_long map[][2], int nentries));
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extern void umap_mapids __P((struct mount *v_mount, struct ucred *credp));
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#define MOUNTTOUMAPMOUNT(mp) ((struct umap_mount *)((mp)->mnt_data))
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#define VTOUMAP(vp) ((struct umap_node *)(vp)->v_data)
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#define UMAPTOV(xp) ((xp)->umap_vnode)
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#ifdef DIAGNOSTIC
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extern struct vnode *umap_checkvp __P((struct vnode *vp, char *fil, int lno));
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#define UMAPVPTOLOWERVP(vp) umap_checkvp((vp), __FILE__, __LINE__)
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#else
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#define UMAPVPTOLOWERVP(vp) (VTOUMAP(vp)->umap_lowervp)
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#endif
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extern vop_t **umap_vnodeop_p;
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#endif /* _KERNEL */
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